CN108518808A - Control method, device and the air-conditioning with it of air-conditioning - Google Patents

Control method, device and the air-conditioning with it of air-conditioning Download PDF

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Publication number
CN108518808A
CN108518808A CN201810603192.3A CN201810603192A CN108518808A CN 108518808 A CN108518808 A CN 108518808A CN 201810603192 A CN201810603192 A CN 201810603192A CN 108518808 A CN108518808 A CN 108518808A
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China
Prior art keywords
duration
state
machine
refrigeration
preset
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CN201810603192.3A
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Chinese (zh)
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CN108518808B (en
Inventor
郑春元
谭志军
杨坤
王命仁
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Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Priority to CN201810603192.3A priority Critical patent/CN108518808B/en
Publication of CN108518808A publication Critical patent/CN108518808A/en
Priority to PCT/CN2019/089863 priority patent/WO2019237960A1/en
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Publication of CN108518808B publication Critical patent/CN108518808B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a kind of control method of air-conditioning, device and with its air-conditioning, air-conditioning is run under low-temperature mixed pattern, wherein method includes：Determine that the outdoor heat exchanger of air-conditioning is in evaporator stage operation；The state parameter for acquiring refrigerant state for identification obtains the status signal of the refrigerant of machine in refrigeration according to state parameter；Wherein, the degree of superheat of machine in refrigeration is included at least in state parameter；According to the status signal of machine in refrigeration, the aperture of outer machine electric expansion valve is adjusted.This method can be when the outdoor heat exchanger of air-conditioning be in evaporator stage operation, according to the status signal of machine in refrigeration, adjust the aperture of outer machine electric expansion valve, effectively improve the reliability of control, system reliable operating ranges are widened, effectively solve the problems, such as interior refrigerant reasonable distribution between machine and outer machine of freezing under worst cold case.

Description

Control method, device and the air-conditioning with it of air-conditioning
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of control method of air-conditioning, device and the air-conditioning with it.
Background technology
Currently, air conditioner temperature is high indoors sometimes, outdoor low temperature (as -25 DEG C~0 DEG C or temperature it is lower) operating mode The places such as lower operation, such as communication base station, exclusive restaurant, bakery, hotel, dance hall, interior have a large amount of heat sources to make Indoor Temperature Degree is high, and there is particular/special requirement in these places to the quality of room air, and outdoor Cryogenic air cannot be introduced directly into interior to drop Low indoor temperature, needs air conditioner to freeze indoors.Conventional air-conditioning device is only capable of in the range of outdoor temperature is at 7 DEG C~43 DEG C Refrigeration can not freeze when outdoor temperature is -25 DEG C~0 DEG C or lower temperature.
It is equally used as evaporator, for the temperature of outside and indoor there are greatest differences, outdoor temperature determines low pressure meeting In lower state.In the case where ensureing comfortable refrigeration wind pushing temperature, since low pressure is relatively low, freeze cold needed for interior machine Matchmaker is few when amount can freeze compared with normal temperature, that is, the degree of superheat of refrigerant is big after interior machine heat exchange of freezing, and outer machine does not overheat substantially.Institute With under unit cold medium flux state, the resistance smaller of outer machine, refrigerant is easier to flow to outer machine.
When outer machine electric expansion valve open it is larger when, flow direction refrigeration in machine refrigerant it is less, be susceptible to refrigeration in machine it Between bias current the case where.When outer machine electric expansion valve opens smaller, the refrigerant of machine is more in flow direction refrigeration, and lower in low pressure Situation, the case where being susceptible to interior machine frosting.The degree of superheat needed for machine is larger in refrigeration, and the control method of the current constant degree of superheat is very Hardly possible adapts to such application scenarios.In the case of pressure control, when outdoor unit is as evaporator under low-temperature mixed pattern, with room Outer machine target low-pressure is unable to control the output of machine in refrigeration, has to be solved as control targe.
Invention content
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, first purpose of the present invention is to propose that a kind of control method of air-conditioning, this method can be in air-conditionings When outdoor heat exchanger is in evaporator stage operation, according to the status signal of machine in refrigeration, opening for outer machine electric expansion valve is adjusted Degree, effectively improves the reliability of control, widens system reliable operating ranges, effectively solves freeze under worst cold case interior machine and outer machine Between refrigerant reasonable distribution the problem of.
Second object of the present invention is to propose a kind of control device of air-conditioning.
Third object of the present invention is to propose a kind of air-conditioning.
Fourth object of the present invention is to propose a kind of electronic equipment.
The 5th purpose of the present invention is to propose a kind of non-transitorycomputer readable storage medium.
In order to achieve the above objectives, first aspect present invention embodiment proposes a kind of control method of air-conditioning, the air-conditioning It runs, the described method comprises the following steps under low-temperature mixed pattern：Determine that the outdoor heat exchanger of the air-conditioning is in evaporator State is run；The state parameter of acquisition refrigerant state for identification obtains the cold of machine in the refrigeration according to the state parameter The status signal of matchmaker；Wherein, the degree of superheat of machine in the refrigeration is included at least in the state parameter；According to machine in the refrigeration Status signal, adjust the aperture of outer machine electric expansion valve.
The control method of the air-conditioning of the embodiment of the present invention, it may be determined that the outdoor heat exchanger of air-conditioning is in evaporator stage fortune Row, and the state parameter of refrigerant state for identification is acquired, according to state parameter, to obtain the state letter of the refrigerant of machine in refrigeration Number, and according to the status signal of machine in refrigeration, adjust the aperture of outer machine electric expansion valve, effectively improve the reliability of control, open up Wide system reliable operating ranges effectively solve the problems, such as interior refrigerant reasonable distribution between machine and outer machine of freezing under worst cold case.
In one embodiment of the invention, it is swollen to adjust outer electromechanical son for the status signal according to machine in the refrigeration The aperture of swollen valve, including：Obtain the of machine in the refrigeration for the first state signal for sending out cold medium shortage in all refrigeration in machine One proportion；Judge whether first duration of first proportion beyond preset first gravity thresholds exceeds preset first Duration；It is preset to judge whether the second duration of the second status signal that machine sends out refrigerant surplus in all refrigeration exceeds Second duration；If first duration of first proportion beyond preset first gravity thresholds exceeds described first Duration, and second duration exceeds second duration, then controls the aperture for reducing the outer machine electric expansion valve.
In one embodiment of the invention, the control method of above-mentioned air-conditioning further includes：Exceed in first proportion First duration of preset first gravity thresholds is beyond first duration and second duration beyond described the Two durations are simultaneously when meeting, and obtain in the refrigeration for the third state signal for sending out refrigerant surplus machine in all refrigeration in machine Second proportion；Judge third duration of second proportion beyond preset second gravity thresholds whether beyond preset the Three durations；It is default to judge whether the 4th duration of the 4th status signal that machine sends out cold medium shortage in all refrigeration exceeds The 4th duration；Judge whether the discharge superheat of the air-conditioning is more than preset degree of superheat threshold value；If second proportion Third duration beyond second gravity thresholds exceeds the third duration, and the 4th duration is beyond described 4th duration, and the discharge superheat is more than the degree of superheat threshold value, then controls and increase opening for the outer machine electric expansion valve Degree.
In one embodiment of the invention, the control method of above-mentioned air-conditioning further includes：When second proportion exceeds The third duration of second gravity thresholds is beyond the third duration and the 4th duration beyond described the When four durations and when the discharge superheat is more than the degree of superheat threshold value not while meeting, control maintains the outer electromechanics The current aperture of sub- expansion valve.
In one embodiment of the invention, described that the system is obtained according to the degree of superheat according to the state parameter The status signal of the refrigerant of cold interior machine, including：By the state parameter respectively with preset at least one state recognition strategy into Row matching；According to the matching result of the state parameter and each state recognition strategy, the machine in the refrigeration that controls sends out described Status signal.
In one embodiment of the invention, the control method of above-mentioned air-conditioning further includes：It is institute in the status signal When stating first state signal, the dbjective state recognition strategy for triggering the first state signal is determined, according to the dbjective state Recognition strategy is modified current target superheat degree.
In one embodiment of the invention, it is described according to the dbjective state recognition strategy to current target superheat degree It is modified, including：When the dbjective state recognition strategy is preset first state recognition strategy, control the target The degree of superheat is modified to the preset degree of superheat, until the first state signal is become by the default corresponding dbjective state recognition strategy Turn to other preset state recognition strategies；When the dbjective state recognition strategy is preset second state recognition strategy, Control reduces the target superheat degree, until dbjective state recognition strategy variation is other preset state recognition strategies.
In one embodiment of the invention, the control method of above-mentioned air-conditioning further includes：State parameter respectively in advance If at least one state recognition strategy carry out it is matched during, if the state parameter simultaneously match multiple state recognitions Strategy triggering generates the first state signal, obtains each state recognition policy priority in the multiple state recognition strategy Grade, control send the first state signal of the high state recognition strategy triggering of priority.
In one embodiment of the invention, the control method of above-mentioned air-conditioning further includes：Obtain the entrance of the refrigerant Temperature；According to the status signal into machine in temperature and the refrigeration, judge whether to enter interior machine anti-freeze control flow； It is less than or equal to preset first temperature threshold into temperature and the status signal non-refrigerant is superfluous if described Status signal, control enter the interior machine anti-freeze flow；Wherein, the status signal of the refrigerant surplus includes second shape State signal and the third state signal；Persistently detect it is described enter temperature, if it is described enter temperature be more than or equal to it is pre- If second temperature threshold value or the status signal be cold medium shortage status signal, control exit the interior machine anti-freeze Flow；Wherein, the status signal of the cold medium shortage includes the first state signal and the 4th status signal.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of control device of air-conditioning, the air-conditioning It is run under low-temperature mixed pattern, described device includes：Determining module is steamed for determining that the outdoor heat exchanger of the air-conditioning is in Send out the operation of device state；Acquisition module, the state parameter for acquiring refrigerant state for identification are obtained according to the state parameter Take the status signal of the refrigerant of machine in the refrigeration；Wherein, the overheat of machine in the refrigeration is included at least in the state parameter Degree；Adjustment module adjusts the aperture of outer machine electric expansion valve for the status signal according to machine in the refrigeration.
The control device of the air-conditioning of the embodiment of the present invention can determine that the outdoor heat exchanger of air-conditioning is in by determining module Evaporator stage is run, and the state parameter of refrigerant state for identification is acquired by acquisition module, according to state parameter, to obtain The status signal of the refrigerant of machine in refrigeration is taken, and outer electromechanical son is adjusted according to the status signal of machine in refrigeration by adjustment module The aperture of expansion valve effectively improves the reliability of control, widens system reliable operating ranges, effectively solves to freeze under worst cold case Between interior machine and outer machine the problem of refrigerant reasonable distribution.
In one embodiment of the invention, the adjustment module, is specifically used for：Obtain the first shape for sending out cold medium shortage First proportion of the machine in all refrigeration in machine in the refrigeration of state signal；Judge that first proportion exceeds preset first proportion Whether the first duration of threshold value exceeds preset first duration；Judge that machine sends out superfluous second of refrigerant in all refrigeration Whether the second duration of status signal exceeds preset second duration；If first proportion compares beyond preset first First duration of weight threshold value exceeds first duration, and second duration exceeds second duration, Then control the aperture for reducing the outer machine electric expansion valve.
In one embodiment of the invention, the adjustment module, is additionally operable to：In first proportion beyond preset the First duration of one gravity thresholds exceeds second duration not beyond first duration and second duration When meeting simultaneously, second ratio of the machine in all refrigeration in machine in the refrigeration for the third state signal for sending out refrigerant surplus is obtained Weight；When whether judging third duration of second proportion beyond preset second gravity thresholds beyond preset third It is long；Judge that whether machine in all refrigeration sends out the 4th duration of the 4th status signal of cold medium shortage beyond preset the Four durations；Judge whether the discharge superheat of the air-conditioning is more than preset degree of superheat threshold value；If second proportion exceeds The third duration of second gravity thresholds exceeds the third duration, and the 4th duration exceeds the described 4th Duration, and the discharge superheat is more than the degree of superheat threshold value, then controls the aperture for increasing the outer machine electric expansion valve.
In one embodiment of the invention, the adjustment module, is additionally operable to：When second proportion exceeds described second The third duration of gravity thresholds exceeds the 4th duration beyond the third duration and the 4th duration When and the discharge superheat be more than the degree of superheat threshold value not simultaneously when meeting, control maintains the outer machine electronic expansion The current aperture of valve.
In one embodiment of the invention, the acquisition module, is specifically used for：By the state parameter respectively with it is default At least one state recognition strategy matched；According to the matching result of the state parameter and each state recognition strategy, It controls machine in the refrigeration and sends out the status signal.
In one embodiment of the invention, the control device of above-mentioned air-conditioning further includes：The degree of superheat adjusts module；Institute Degree of superheat adjustment module is stated, is used for：When the status signal is the first state signal, determines and trigger the first state The dbjective state recognition strategy of signal is modified current target superheat degree according to the dbjective state recognition strategy.
In one embodiment of the invention, the degree of superheat adjusts module, is further used for：When the dbjective state is known When strategy is not preset first state recognition strategy, the target superheat degree is modified to the preset degree of superheat by control, until The first state signal is other preset state recognition strategies by the default corresponding dbjective state recognition strategy variation；When When the dbjective state recognition strategy is preset second state recognition strategy, control reduces the target superheat degree, Zhi Daosuo It is other preset state recognition strategies to state the variation of dbjective state recognition strategy.
In one embodiment of the invention, the acquisition module, is additionally operable to：State parameter respectively with it is preset at least During one state recognition strategy progress is matched, if the state parameter matches multiple state recognition strategies triggerings simultaneously The first state signal is generated, each state recognition policy priority grade in the multiple state recognition strategy, control hair are obtained The first state signal for the state recognition strategy triggering for sending priority high.
In one embodiment of the invention, the control device of above-mentioned air-conditioning further includes：Anti-freeze control module；Institute Anti-freeze control module is stated, is used for：Obtain the entrance temperature of the refrigerant；According to described into machine in temperature and the refrigeration Status signal judges whether to enter interior machine anti-freeze control flow；If the temperature that enters is less than or equal to preset the The status signal of one temperature threshold and the non-refrigerant surplus of the status signal, control enter the interior machine anti-freeze flow； Wherein, the status signal of the refrigerant surplus includes second status signal and the third state signal；Persistently detect institute It states and enters temperature, if the temperature that enters is more than or equal to preset second temperature threshold value or the status signal The interior machine anti-freeze flow is exited in the status signal of cold medium shortage, control；Wherein, the status signal of the cold medium shortage includes The first state signal and the 4th status signal.
In order to achieve the above objectives, third aspect present invention embodiment proposes a kind of air-conditioning comprising above-mentioned air-conditioning Control device.
The air-conditioning of the embodiment of the present invention can determine that the outdoor heat exchanger of air-conditioning is in evaporator stage by determining module It runs, and acquires the state parameter of refrigerant state for identification by acquisition module, according to state parameter, to obtain machine in refrigeration Refrigerant status signal, and by adjustment module according to the status signal of machine in refrigeration, adjust opening for outer machine electric expansion valve Degree, effectively improves the reliability of control, widens system reliable operating ranges, effectively solves freeze under worst cold case interior machine and outer machine Between refrigerant reasonable distribution the problem of.
In order to achieve the above objectives, fourth aspect present invention embodiment proposes a kind of electronic equipment, including memory, processing Device；Wherein, the processor can perform to run with described by reading the executable program code stored in the memory The corresponding program of program code, for realizing the control method of above-mentioned air-conditioning.
The electronic equipment of the embodiment of the present invention, program corresponding with air-conditioning control method that is storing on it are performed When, the reliability of control is can effectively improve, effectively reduces the cost of machine in refrigeration, effectively save resource, and simply easily realize.
In order to achieve the above objectives, fifth aspect present invention embodiment proposes a kind of non-transitory computer-readable storage medium Matter is stored thereon with computer program, which realizes the control method of above-mentioned air-conditioning when being executed by processor.
The non-transitorycomputer readable storage medium of the embodiment of the present invention storing with air-conditioning control method on it Corresponding program is performed, and can effectively improve the reliability of control, effectively reduces the cost of machine in refrigeration, effectively save money Source, and simple easily realization.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description Obviously, or practice through the invention is recognized.
Description of the drawings
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments Obviously and it is readily appreciated that, wherein：
Fig. 1 is the flow chart according to the control method of the air-conditioning of the embodiment of the present invention；
Fig. 2 is the judgement schematic diagram according to the refrigerant of one embodiment of the invention；
Fig. 3 is the flow chart according to the control method of the air-conditioning of one embodiment of the invention；
Fig. 4 is the flow chart according to the control method of the air-conditioning of another embodiment of the present invention；
Fig. 5 is according to machine maintenance positive logic schematic diagram in the refrigeration of one embodiment of the invention；
Fig. 6 is the flow chart according to the control method of the air-conditioning of further embodiment of the present invention；
Fig. 7 is the block diagram according to the control device of the air-conditioning of the embodiment of the present invention；And
Fig. 8 is the block diagram according to the control device of the air-conditioning of one embodiment of the invention.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Control method, device and the sky with it of the air-conditioning proposed according to embodiments of the present invention are described with reference to the accompanying drawings It adjusts, describes the control method of the air-conditioning proposed according to embodiments of the present invention with reference to the accompanying drawings first.
Fig. 1 is the flow chart of the control method of the air-conditioning of one embodiment of the invention.
Air-conditioning provided in an embodiment of the present invention needs to run under low-temperature mixed pattern, and low-temperature mixed pattern is low temperature system In the case of cold, since outdoor temperature is relatively low, can also there be heating needs in interior simultaneously, so, cryogenic refrigeration often companion With heating, i.e. system is often in such case while heating in the operating status of refrigeration.
As shown in Figure 1, the control method of the air-conditioning includes the following steps：
S1 determines that the outdoor heat exchanger of air-conditioning is in evaporator stage operation.
Under low-temperature mixed pattern, according to the load condition of indoor cooling and warming, the outdoor heat exchanger of air-conditioning can carry out cold Switching between condenser and evaporator.In the case of outdoor temperature is low, heating load is often bigger than cooling load so that outdoor heat exchange Device can be in evaporator stage mostly.Therefore, before the aperture for adjusting outer machine electric expansion valve, the room of air-conditioning can be first determined External heat exchanger is in evaporator stage operation.
S2 acquires the state parameter of refrigerant state for identification, according to state parameter, obtains the shape of the refrigerant of machine in refrigeration State signal；Wherein, the degree of superheat of machine in refrigeration is included at least in state parameter.
Specifically, the state parameter of refrigerant state for identification can be acquired, wherein refrigeration is included at least in state parameter The degree of superheat of interior machine further can also be including machine outlet in indoor environment temperature, set temperature, refrigeration in state parameter The aperture etc. of the temperature of refrigerant, the temperature for the interior machine import refrigerant that freezes, and the interior machine electric expansion valve of refrigeration.
In the embodiment of the present invention, different state recognition strategies can be pre-set, by the state parameter got and not With state recognition strategy matched, it can be deduced that with the matched state recognition strategy of state parameter, and then determine The status signal of the refrigerant of machine in refrigeration.Wherein, the status signal of refrigerant may include the status signal of cold medium shortage, refrigerant mistake The moderate status signal of surplus status signal and refrigerant.
As a kind of possibly realization method, can detect the temperature of machine outlet refrigerant in refrigeration, and in refrigeration machine into The temperature of mouth refrigerant, the temperature of machine import refrigerant in the temperature and refrigeration of refrigerant is exported according to machine in refrigeration, can get system The degree of superheat of cold interior machine.The calculation formula of the degree of superheat of machine is in refrigeration：
SH=Tout-Tin,
Wherein, SH is the currently detected degree of superheat, and Tout is the temperature of machine outlet refrigerant in refrigeration, and Tin is in refrigeration The temperature of machine import refrigerant.
S3 adjusts the aperture of outer machine electric expansion valve according to the status signal of machine in refrigeration.
As shown in Fig. 2, refrigerant can have cold medium shortage, refrigerant surplus and the moderate several situations of refrigerant in air-conditioning.It can be with It is 5 regions according to the state demarcation of refrigerant：AreaA, AreaB, AreaC, AreaD and AreaE, wherein cold medium shortage region Including：AreaC, AreaD and AreaE；The moderate region of refrigerant is：AreaB；Refrigerant surplus region is：AreaA.Under normal circumstances, When cold medium shortage, the aperture of the electric expansion valve of outer machine can be reduced, and when refrigerant surplus, the electronics of outer machine can be increased The aperture of expansion valve.
It should be noted that Tin represents the detection temperature entered in refrigeration after machine coolant throttle；Ten indoor environment temperatures； The corresponding saturation temperature of Te system low-voltages；Ttag is corresponding Tin-Te values when coolant quantity degree of excess is very big.
It specifically, can basis when system enters low-temperature mixed pattern and outdoor heat exchanger is evaporator stage operation The status information of machine in refrigeration identifies that the coolant quantity of machine in refrigeration is to be in superfluous state in insufficient state, in turn Can the aperture of external machine electric expansion valve be adjusted.
The control method of air-conditioning according to the ... of the embodiment of the present invention passes through as a result, it may be determined that at the outdoor heat exchanger of air-conditioning It is run in evaporator stage, and acquires the state parameter of refrigerant state for identification, to obtain machine in refrigeration according to state parameter Refrigerant status signal, and according to the status signal of machine in refrigeration, adjust the aperture of outer machine electric expansion valve, i.e., according to refrigeration The sufficient degree of refrigerant in interior machine, dynamically adjusts the aperture of electric expansion valve so that the amount and electronics of refrigerant in the interior machine of refrigeration The aperture of expansion valve is adaptive, effectively improves the reliability of control, effectively reduces the cost of machine in refrigeration, economizes on resources, and letter It is single easily to realize.
In one embodiment of the invention, as shown in figure 3, the control method of above-mentioned air-conditioning, described according to the system The status signal of cold interior machine adjusts the aperture of outer machine electric expansion valve, specifically includes following steps：
S301 obtains first ratio of the machine in all refrigeration in machine in the refrigeration for the first state signal for sending out cold medium shortage Weight.
Specifically, when system enters low-temperature mixed pattern and outdoor heat exchanger is evaporator stage operation, can pass through Judge the cold medium shortage status signal of machine and the external machine electric expansion valve of refrigerant surplus status signal of machine in refrigeration in refrigeration Aperture is adjusted.Therefore, the system for the first state signal (cold medium shortage signal is ON) for sending out cold medium shortage can first be obtained First proportion of the cold interior machine in all refrigeration in machine, for example, the first proportion can be X%.
Whether S302 judges first duration of first proportion beyond preset first gravity thresholds beyond preset the One duration.
Specifically, when first ratio of the machine in all refrigeration in machine in the refrigeration of first state signal for sending out cold medium shortage When weight X% exceeds preset first gravity thresholds, judge that the first proportion exceeds the first of preset first gravity thresholds and holds again Whether continuous duration exceeds preset first duration, for example, the first preset duration is β minutes.Wherein, preset first gravity thresholds It can be designed according to actual conditions by those skilled in the art with preset first duration, be not specifically limited herein.
S303, judges whether the second duration of the second status signal that machine sends out refrigerant surplus in all refrigeration surpasses Go out preset second duration.
Specifically, when in all refrigeration machine send out the second status signal of refrigerant surplus (refrigerant excess signal be OFF) When, judge whether the second duration of all the second status signals for sending out refrigerant surplus exceeds preset second duration.Its In, preset second duration can be designed by those skilled in the art according to actual conditions, is not specifically limited herein.
S304, if first duration of first proportion beyond preset first gravity thresholds exceeds the first duration, and Second duration exceeds the second duration, then controls the aperture for reducing outer machine electric expansion valve.
Specifically, when meeting first duration of first proportion beyond preset first gravity thresholds beyond preset the One duration, and the second duration of all the second status signals for sending out refrigerant surplus exceed preset second duration when, can Reduce the aperture of outer machine electric expansion valve with control, for example, outer machine electric expansion valve closes ω Pls, so as to effectively avoid each Under kind operating mode, the interior machine that freezes is led greatly very much the less caused refrigerant bias current of machine refrigerant in refrigeration due to outer machine electronic expansion valve opening and is asked Topic.
In one embodiment of the invention, as shown in figure 4, the control method of above-mentioned air-conditioning, further comprising the steps of：
S401, in first duration of first proportion beyond preset first gravity thresholds beyond the first duration and the When two durations do not meet simultaneously beyond the second duration, the machine in the refrigeration for the third state signal for sending out refrigerant surplus that obtains exists The second proportion in all refrigeration in machine.
Specifically, super if first duration of first proportion beyond preset first gravity thresholds cannot be met simultaneously Go out preset first duration, and the second duration of all the second status signals for sending out refrigerant surplus exceeds preset second Duration can then obtain in the refrigeration for the third state signal (refrigerant surplus be ON) for sending out refrigerant surplus machine in all refrigeration The second proportion in machine, for example, the second proportion can be Y%.
Whether S402 judges third duration of second proportion beyond preset second gravity thresholds beyond preset the Three durations.
Secondly, when second proportion of the machine in all refrigeration in machine in the refrigeration of third state signal for sending out refrigerant surplus When Y% exceeds preset second gravity thresholds, judge that third of second proportion beyond preset second gravity thresholds continues again Whether duration exceeds preset third duration, for example, third preset duration is β minutes.
If it is judged that third duration of second proportion beyond preset second gravity thresholds exceeds preset third Duration then continues to execute step 403；It is no to then follow the steps 406.
Wherein, preset third gravity thresholds and preset third duration can be by those skilled in the art according to practical feelings Condition is designed, and is not specifically limited herein.
S403, judges whether the 4th duration of the 4th status signal that machine sends out cold medium shortage in all refrigeration surpasses Go out preset 4th duration.
Specifically, when in all refrigeration machine send out the 4th status signal of cold medium shortage (cold medium shortage signal be OFF) When, when whether further judging the 4th duration of all the 4th status signals for sending out cold medium shortage beyond the preset 4th It is long.
If it is judged that machine sends out the 4th duration of the 4th status signal of cold medium shortage and exceeds in all refrigeration Preset 4th duration, then continue to execute step 404；It is no to then follow the steps 406.
Wherein, preset 4th duration can be designed by those skilled in the art according to actual conditions, not done herein It is specific to limit.
S404, judges whether the discharge superheat of air-conditioning is more than preset degree of superheat threshold value.
Further, it is also necessary to the discharge superheat of air-conditioning is obtained, then by discharge superheat and preset degree of superheat threshold Value is compared.If it is judged that the discharge superheat of air-conditioning is more than preset degree of superheat threshold value, then step 405 is continued to execute； It is no to then follow the steps 406.
Wherein, preset degree of superheat threshold value can be θ DEG C, can be carried out according to actual conditions by those skilled in the art Design, is not specifically limited herein.
S405, control increase the aperture of outer machine electric expansion valve.
Specifically, when meeting third duration of second proportion beyond preset second gravity thresholds beyond preset the Three durations, and the 4th duration of all the 4th status signals for sending out cold medium shortage exceed preset four duration when, and The discharge superheat of air-conditioning is more than θ DEG C, then the aperture for increasing outer machine electric expansion valve can be controlled, for example, outer machine electronic expansion Valve opens ω Pls, and to effectively avoid under various operating modes, the interior machine that freezes causes since outer machine electric expansion valve is too small in refrigeration Machine refrigerant is excessive, the too low problem of wind pushing temperature.
S406, control maintain the current aperture of outer machine electric expansion valve.
Specifically, if the third duration that the second proportion exceeds preset second gravity thresholds cannot be met simultaneously Beyond preset third duration, the 4th duration of all the 4th status signals for sending out cold medium shortage exceeds the preset 4th When duration and the discharge superheat of air-conditioning is more than θ DEG C, then controls the current aperture for maintaining outer machine electric expansion valve, that is, keep Outer machine electronic expansion valve opening is constant.
In one embodiment of the invention, according to state parameter, the status signal of the refrigerant of machine in refrigeration, packet are obtained It includes：State parameter is matched with preset at least one state recognition strategy respectively；According to state parameter and each state The matching result of recognition strategy, the interior machine of control refrigeration send out status signal.
Specifically, (1) can pass through interior machine electric expansion valve (the Electronic Expansion of machine in refrigeration Valve, EXV) aperture；The size of the degree of superheat and target superheat degree that detect；And the return air temperature of air-conditioning with setting First temperature difference between cryogenic temperature, i.e., when meeting following 3 formula, the machine in refrigeration that can control sends out first state letter Number.
Machine EXV Kai Du≤λ in refrigeration1Pls,
SH≤MaxSHS,
Ten-Ts≧2℃。
Specifically, machine target superheat degree SHS can be determined by table 1 in low-temperature mixed pattern refrigeration.
Table 1
Or first temperature difference between the return air temperature of air-conditioning and the cryogenic temperature of setting, the return air temperature of air-conditioning can be passed through Second temperature difference in degree and refrigeration between the temperature of machine import refrigerant can control system that is, when meeting following 2 formula simultaneously Cold interior machine sends out first state signal.
Ten-Tin<χ DEG C, and continue 3 minutes or more；
Ten-Ts≧2℃。
Or the size of the degree of superheat that can be detected and target superheat degree；Return air temperature by air-conditioning and machine in refrigeration Second temperature difference between the temperature of import refrigerant；And the temperature saturation temperature corresponding with system low-voltage of the interior machine import refrigerant of refrigeration The third temperature difference between degree, i.e., when meeting following 3 formula simultaneously, the machine in refrigeration that can control sends out first state signal.
Tin-Te≤Tag, and continue 3 minutes or more；
SH≤MinSHS,
Ten-Ts≧2℃。
Wherein, Ten is return air temperature, and Ts is that machine sets cryogenic temperature in refrigeration, and SHS is target superheat degree, and SH is current The degree of superheat detected, Tin are the temperature of machine import refrigerant in refrigeration, and Te is the corresponding saturation temperature of system low-voltage.
(2) aperture of the interior machine electric expansion valve of machine in refrigeration can be passed through；The degree of superheat detected and target superheat degree Size；And the temperature of machine import refrigerant can control the interior machine of refrigeration and send out that is, when meeting following 2 formula in refrigeration Second status signal.
Machine EXV Kai Du≤λ in refrigeration2+τ2Pls,
SH≧MinSHS+δ2,
Tin≧ξ+1℃。
(3) aperture of the interior machine electric expansion valve of machine in refrigeration can be passed through；The degree of superheat detected and target superheat degree Size；And the temperature of machine import refrigerant can control the interior machine of refrigeration and send out that is, when meeting following 2 formula in refrigeration Third state signal.
Machine EXV apertures in refrigeration<λ2Pls,
SH<MinSHS,
Tin<ξ℃。
(4) aperture of the interior machine electric expansion valve of machine in refrigeration can be passed through；The degree of superheat detected and target superheat degree Size；And first temperature difference between the return air temperature and the cryogenic temperature of setting of air-conditioning, i.e., it ought meet in following 3 formula Any one when, can control refrigeration in machine send out the 4th status signal.
Machine EXV apertures in refrigeration<λ1-τ1Pls,
SH<MaxSHS-δ1,
Ten-Ts<1.5 DEG C,
Or first temperature difference between the return air temperature of air-conditioning and the cryogenic temperature of setting, the return air temperature of air-conditioning can be passed through Spend second temperature difference between the temperature of machine import refrigerant in refrigeration, i.e., it, can be with when meeting in following 2 formula any one Machine sends out the 4th status signal in control refrigeration.
+ 3 DEG C of Ten-Tin≤χ,
Ten-Ts<1.5℃。
Or second temperature difference between the temperature of machine import refrigerant in the return air temperature and refrigeration of air-conditioning can be passed through；And The third temperature difference in refrigeration between the temperature saturation temperature corresponding with system low-voltage of machine import refrigerant, i.e., ought meet following 2 In formula any one when, can control refrigeration in machine send out the 4th status signal.
Tin-Te<Tag-2,
Ten-Ts<1.5 DEG C,
Wherein, Ten is return air temperature, and Tin is the temperature of machine import refrigerant in refrigeration, and Ts is that interior machine sets cryogenic temperature, Te is the corresponding saturation temperature of system low-voltage.
As a result, by matching state parameter with preset at least one state recognition strategy respectively, so as to According to the matching result of state parameter and each state recognition strategy, machine sends out status signal, variable target in control refrigeration Control method for overheat adapts to the case where indoor temperature difference bigger with outdoor, further increases reliability, range of operation is further It can widen.
In one embodiment of the invention, further include：When status signal is first state signal, when triggering the first shape When the dbjective state of state signal is preset first state recognition strategy, target superheat degree is modified to preset overheat by control Degree, until first state signal is other preset state recognition strategies by default corresponding dbjective state recognition strategy variation.
Specifically, it when dbjective state recognition strategy is preset first state recognition strategy, needs to meet following 2 simultaneously When a formula, first state signal is sent out with machine in control refrigeration.
Ten-Tin<χ DEG C, and continue 3 minutes or more；
Ten-Ts≧2℃。
Target superheat degree is modified to the preset degree of superheat in order to control, as shown in figure 5, can be to target superheat degree by force It is adjusted to：SHS=1, until cold medium shortage signal is other preset states by default corresponding dbjective state recognition strategy variation Recognition strategy.
In one embodiment of the invention, further include：When status signal is first state signal, when triggering the first shape When the dbjective state of state signal is preset first state recognition strategy, when dbjective state recognition strategy is preset second state When recognition strategy, control reduces target superheat degree, until the variation of dbjective state recognition strategy is other preset state recognition plans Slightly.
Specifically, it when dbjective state recognition strategy is preset second state recognition strategy, needs to meet following 3 simultaneously When a formula, first state signal is sent out with machine in control refrigeration.
Tin-Te≤Tag, and continue 3 minutes or more；
SH≤MinSHS,
Ten-Ts≧2℃。
Target superheat degree is modified to the preset degree of superheat in order to control, as shown in figure 5, can be to target superheat degree by force It is adjusted to：The current SH-3 of SHS=, until the variation of dbjective state recognition strategy is other preset state recognition strategies.
In one embodiment of the invention, the control method of above-mentioned air-conditioning further includes：State parameter respectively in advance If at least one state recognition strategy carry out it is matched during, if state parameter simultaneously match multiple state recognition strategies Triggering generates first state signal, obtains each state recognition policy priority grade in multiple state recognition strategies, and control sends excellent The first state signal of the high state recognition strategy triggering of first grade.
Specifically, if matching first state simultaneously during state parameter is matched with the progress of state recognition strategy Recognition strategy, the second state recognition strategy and third state recognition strategy trigger simultaneously generates first state signal, then needs to sentence The priority of disconnected first state recognition strategy, the second state recognition strategy and third state recognition strategy, if first state is known Strategy is not higher than the second state recognition strategy and third state recognition strategy, then controls the first of first state recognition strategy triggering Status signal；If the second state recognition strategy is higher than the first state recognition strategy and third state recognition strategy, second is controlled The first state signal of state recognition strategy triggering；If third state recognition strategy is higher than the first state recognition strategy and the second shape State recognition strategy then controls the first state signal of third state recognition strategy triggering.
In one embodiment of the invention, as shown in fig. 6, the control method of above-mentioned air-conditioning, further comprising the steps of：
S601 obtains the entrance temperature of refrigerant.
S602 judges whether to enter interior machine anti-freeze control flow according to the status signal for entering machine in temperature and refrigeration.
Specifically, the control of machine anti-freeze often only judges that the temperature of refrigerant inlet is less than frosting in refrigeration in the related technology The time of point, and in the case of cryogenic refrigeration, since low pressure is relatively low, inlet condition was often to determine whether carrying out anti-freeze control Less than hoarfrost point, and cold medium flux is less, is easy overheat, therefore the heat exchanger overwhelming majority can all be in the shape higher than hoarfrost point State, and also it is not easy accumulation frost less than hoarfrost point part, anti-freeze control need not be carried out.In the case of pressure control, low When outer machine is as evaporator under warm mixed mode, machine target low-pressure is unable to control the defeated of the interior machine of refrigeration as control targe in addition Go out.
Therefore, in order to preferably control entering or exiting interior machine anti-freeze flow, can obtain refrigerant first enters speed Degree, and according to the status signal of machine in admission velocity and refrigeration, to judge whether to enter interior machine anti-freeze control flow.
S603, if being less than or equal to preset first temperature threshold into temperature and the non-refrigerant of status signal is superfluous Status signal, control enter interior machine anti-freeze flow；Wherein, the status signal of refrigerant surplus includes the second status signal and third Status signal.
Specifically, it needs to continue certain duration less than or equal to preset first temperature threshold into temperature.Wherein, First predetermined threshold value can be -1 DEG C, and the duration is μ minutes.
Specifically, when refrigerant enters the temperature of interior machine<At=- 1 DEG C, and the duration is μ minutes, and status signal It is not the status signal of refrigerant surplus, can controls into interior machine anti-freeze flow.
S604, lasting detection enter temperature, if it is more than or equal to preset second temperature threshold value into temperature, or Status signal is the status signal of cold medium shortage, and interior machine anti-freeze flow is exited in control；Wherein, the status signal packet of cold medium shortage Include first state signal and the 4th status signal.
Specifically, it needs to continue certain duration more than or equal to preset second temperature threshold value into temperature.Wherein, Second predetermined threshold value can be K DEG C.
Specifically, when refrigerant enters the temperature of interior machine>=K DEG C when, and the duration be μ minutes or status signal For the status signal of cold medium shortage, it can control and exit interior machine anti-freeze flow, so that the use scope of anti-freeze control It is wider.
The control method of the air-conditioning proposed according to embodiments of the present invention, it may be determined that the outdoor heat exchanger of air-conditioning is in evaporation Device state is run, and acquires the state parameter of refrigerant state for identification, according to state parameter, to obtain the refrigerant of machine in refrigeration Status signal, and according to the status signal of machine in refrigeration, adjust the aperture of outer machine electric expansion valve, effectively solve pressure and control In the case of, the target low-pressure of outer machine controls invalid problem, effectively improves the reliability of control, effectively reduce refrigeration in machine at This, economizes on resources, and simple easily realization.
Referring next to the control device for the air-conditioning that attached drawing description proposes according to embodiments of the present invention.
Fig. 7 is the block diagram of the control device of the air-conditioning of the embodiment of the present invention.
Air-conditioning is run under low-temperature mixed pattern, as shown in fig. 7, the control device of the air-conditioning includes：Determining module 100, Acquisition module 200 and adjustment module 300.
Wherein it is determined that module 100 is for determining that the outdoor heat exchanger of air-conditioning is in evaporator stage operation.Acquisition module 200 state parameter for acquiring refrigerant state for identification obtains the state letter of the refrigerant of machine in refrigeration according to state parameter Number；Wherein, the degree of superheat of machine in refrigeration is included at least in state parameter.Adjustment module 300 is used for the state according to machine in refrigeration Signal adjusts the aperture of outer machine electric expansion valve.
In one embodiment of the invention, adjustment module 300 is specifically used for：Obtain the first state for sending out cold medium shortage First proportion of the machine in all refrigeration in machine in the refrigeration of signal；Judge that the first proportion exceeds preset first gravity thresholds Whether the first duration exceeds preset first duration；Judge that machine in all refrigeration sends out the second state letter of refrigerant surplus Number the second duration whether exceed preset second duration；If the first proportion beyond preset first gravity thresholds the One duration exceeds the first duration, and the second duration exceeds the second duration, then controls and reduce outer machine electric expansion valve Aperture.
In one embodiment of the invention, adjustment module 300 is additionally operable to：Exceed preset first proportion in the first proportion When first duration of threshold value does not meet beyond the first duration and the second duration beyond the second duration simultaneously, hair is obtained Go out second proportion of the machine in all refrigeration in machine in the refrigeration of the third state signal of refrigerant surplus；Judge that the second proportion exceeds Whether the third duration of preset second gravity thresholds exceeds preset third duration；Judge that machine is sent out in all refrigeration Whether the 4th duration of the 4th status signal of cold medium shortage exceeds preset 4th duration；Judge the discharge superheat of air-conditioning Whether degree is more than preset degree of superheat threshold value；If third duration of second proportion beyond the second gravity thresholds exceeds third Duration, and the 4th duration exceeds the 4th duration, and discharge superheat is more than degree of superheat threshold value, then controls the outer electromechanical son of increase The aperture of expansion valve.
In one embodiment of the invention, adjustment module 300 is additionally operable to：When the second proportion exceeds the second gravity thresholds When third duration exceeds four durations beyond third duration and the 4th duration and discharge superheat was more than When heat degree threshold does not meet simultaneously, control maintains the current aperture of outer machine electric expansion valve.
In one embodiment of the invention, acquisition module 100 is specifically used for：By state parameter respectively with it is preset at least One state recognition strategy is matched；According to the matching result of state parameter and each state recognition strategy, control in refrigeration Machine sends out status signal.
Further, on the basis of the control device of air-conditioning shown in Fig. 7, as shown in figure 8, the control of above-mentioned air-conditioning Device processed further includes：The degree of superheat adjusts module 400 and anti-freeze control module 500.Wherein, degree of superheat adjustment module 400 is used In：When status signal is first state signal, the dbjective state recognition strategy of triggering first state signal is determined, according to target State recognition strategy is modified current target superheat degree.
In one embodiment of the invention, the degree of superheat adjusts module.Degree of superheat adjustment module 400 is specifically used for：Work as mesh When mark state recognition strategy is preset first state recognition strategy, target superheat degree is modified to the preset degree of superheat by control, Until first state signal is other preset state recognition strategies by default corresponding dbjective state recognition strategy variation；Work as target When state recognition strategy is preset second state recognition strategy, control reduces target superheat degree, until dbjective state identifies plan Slightly variation is other preset state recognition strategies.
In one embodiment of the invention, acquisition module 100 is additionally operable to：In state parameter respectively with preset at least one A state recognition strategy carry out it is matched during, if state parameter matches multiple state recognition strategies triggerings and generates the simultaneously One status signal, obtains each state recognition policy priority grade in multiple state recognition strategies, and control sends the high shape of priority The first state signal of state recognition strategy triggering.
Further, anti-freeze control module 500, is used for：Obtain the entrance temperature of refrigerant；According to entrance temperature and refrigeration The status signal of interior machine judges whether to enter interior machine anti-freeze control flow；If be less than or equal into temperature preset The status signal of first temperature threshold and the non-refrigerant surplus of status signal, control enter interior machine anti-freeze flow；Wherein, refrigerant mistake Surplus status signal includes the second status signal and third state signal；Lasting detection enters temperature, if be more than into temperature Either it is equal to preset second temperature threshold value or status signal for the status signal of cold medium shortage, it is antifreeze that interior machine is exited in control Tie flow；Wherein, the status signal of cold medium shortage includes first state signal and the 4th status signal.
It should be noted that the explanation of the aforementioned control method embodiment to air-conditioning is also applied for the sky of the embodiment The control device of tune, details are not described herein again.
The control device of the air-conditioning proposed according to embodiments of the present invention can determine that the outdoor of air-conditioning is changed by determining module Hot device is in evaporator stage operation, and the state parameter of refrigerant state for identification is acquired by acquisition module, with according to shape State parameter obtains the status signal of the refrigerant of machine in refrigeration, and is adjusted according to the status signal of machine in refrigeration by adjustment module The aperture of outer machine electric expansion valve, effectively improves the reliability of control, effectively reduces the cost of machine in refrigeration, economizes on resources, and It is simple easily to realize.
The embodiment of the present invention also proposed a kind of air-conditioning comprising the control device of above-mentioned air-conditioning.
The air-conditioning proposed according to embodiments of the present invention can be determined that the outdoor heat exchanger of air-conditioning is in by determining module and be steamed The operation of device state is sent out, and acquires the state parameter of refrigerant state for identification by acquisition module, according to state parameter, to obtain The status signal of the refrigerant of machine in refrigeration, and it is swollen to be adjusted according to the status signal of machine in refrigeration by adjustment module for outer electromechanical son The aperture of swollen valve effectively improves the reliability of control, effectively reduces the cost of machine in refrigeration, economizes on resources, and simply easily realizes.
The embodiment of the present invention also proposed a kind of electronic equipment, including memory, processor；Wherein, processor passes through reading The executable program code stored in access to memory runs program corresponding with executable program code, above-mentioned for realizing Air-conditioning control method.
The electronic equipment proposed according to embodiments of the present invention, program corresponding with air-conditioning control method that is storing on it It is performed, can effectively improve the reliability of control, the cost of machine effectively in reduction refrigeration, effectively save resource, and it is simple Easily realize.
The embodiment of the present invention also proposed a kind of non-transitorycomputer readable storage medium, be stored thereon with computer journey Sequence, the program realize the control method of above-mentioned air-conditioning when being executed by processor.
The non-transitorycomputer readable storage medium proposed according to embodiments of the present invention, store on it with air-conditioning The corresponding program of control method is performed, and can effectively improve the reliability of control, effectively reduces the cost of machine in refrigeration, has Effect economizes on resources, and simple easily realization.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on ... shown in the drawings or Position relationship is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated device or element must There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be that machinery connects It connects, can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary in two elements The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be with "above" or "below" second feature It is that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be One feature is directly under or diagonally below the second feature, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office It can be combined in any suitable manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changes, replacing and modification.

Claims (21)

1. a kind of control method of air-conditioning, which is characterized in that the air-conditioning is run under low-temperature mixed pattern, the method includes Following steps：
Determine that the outdoor heat exchanger of the air-conditioning is in evaporator stage operation；
The state parameter for acquiring refrigerant state for identification obtains the refrigerant of machine in the refrigeration according to the state parameter Status signal；Wherein, the degree of superheat of machine in the refrigeration is included at least in the state parameter；
According to the status signal of machine in the refrigeration, the aperture of outer machine electric expansion valve is adjusted.
2. according to the method described in claim 1, it is characterized in that, the status signal according to machine in the refrigeration, is adjusted The aperture of outer machine electric expansion valve, including：
Obtain first proportion of the machine in all refrigeration in machine in the refrigeration for the first state signal for sending out cold medium shortage；
When whether judging first duration of first proportion beyond preset first gravity thresholds beyond preset first It is long；
It is preset to judge whether the second duration of the second status signal that machine sends out refrigerant surplus in all refrigeration exceeds Second duration；
If first duration of first proportion beyond preset first gravity thresholds exceeds first duration, And second duration exceeds second duration, then controls the aperture for reducing the outer machine electric expansion valve.
3. according to the method described in claim 2, it is characterized in that, further including：
In first duration of first proportion beyond preset first gravity thresholds beyond first duration and described When second duration does not meet simultaneously beyond second duration, the refrigeration for the third state signal for sending out refrigerant surplus is obtained Second proportion of the interior machine in all refrigeration in machine；
When whether judging third duration of second proportion beyond preset second gravity thresholds beyond preset third It is long；
It is preset to judge whether the 4th duration of the 4th status signal that machine sends out cold medium shortage in all refrigeration exceeds 4th duration；
Judge whether the discharge superheat of the air-conditioning is more than preset degree of superheat threshold value；
If third duration of second proportion beyond second gravity thresholds exceeds the third duration, and described 4th duration exceeds the 4th duration, and the discharge superheat is more than the degree of superheat threshold value, then controls and increase institute State the aperture of outer machine electric expansion valve.
4. according to the method described in claim 3, it is characterized in that, further including：
When third duration of second proportion beyond second gravity thresholds is beyond the third duration and described When 4th duration exceeds four duration and the discharge superheat does not meet simultaneously more than the degree of superheat threshold value When, control maintains the current aperture of the outer machine electric expansion valve.
5. according to the method described in claim 1, it is characterized in that, described according to the state parameter, according to the degree of superheat, The status signal of the refrigerant of machine in the refrigeration is obtained, including：
The state parameter is matched with preset at least one state recognition strategy respectively；
According to the matching result of the state parameter and each state recognition strategy, the machine in the refrigeration that controls sends out the state Signal.
6. according to the method described in claim 5, it is characterized in that, further including：
When the status signal is the first state signal, the dbjective state identification for triggering the first state signal is determined Strategy is modified current target superheat degree according to the dbjective state recognition strategy.
7. according to the method described in claim 6, it is characterized in that, it is described according to the dbjective state recognition strategy to current Target superheat degree is modified, including：
When the dbjective state recognition strategy is preset first state recognition strategy, control the target superheat degree amendment It is that other are pre- until the first state signal is changed by the default corresponding dbjective state recognition strategy for the preset degree of superheat If state recognition strategy；
When the dbjective state recognition strategy is preset second state recognition strategy, control reduces the target superheat degree, Until dbjective state recognition strategy variation is other preset state recognition strategies.
8. the method according to the description of claim 7 is characterized in that further including：
During state parameter carries out matched with preset at least one state recognition strategy respectively, if the state is joined It counts while matching multiple state recognition strategies triggerings and generate the first state signal, obtain in the multiple state recognition strategy Each state recognition policy priority grade, control send the first state signal of the high state recognition strategy triggering of priority.
9. according to claim 1-8 any one of them methods, which is characterized in that further include：
Obtain the entrance temperature of the refrigerant；
According to the status signal into machine in temperature and the refrigeration, judge whether to enter interior machine anti-freeze control flow；
If the temperature that enters is less than or equal to preset first temperature threshold and the non-refrigerant mistake of the status signal Surplus status signal, control enter the interior machine anti-freeze flow；Wherein, the status signal of the refrigerant surplus includes described Two-state signal and the third state signal；
Persistently detect it is described enter temperature, if it is described enter temperature be more than or equal to preset second temperature threshold value, or The status signal is the status signal of cold medium shortage, and the interior machine anti-freeze flow is exited in control；Wherein, the cold medium shortage Status signal include the first state signal and the 4th status signal.
10. a kind of control device of air-conditioning, which is characterized in that the air-conditioning is run under low-temperature mixed pattern, described device packet It includes：
Determining module, for determining that the outdoor heat exchanger of the air-conditioning is in evaporator stage operation；
Acquisition module, the state parameter for acquiring refrigerant state for identification obtain the refrigeration according to the state parameter The status signal of the refrigerant of interior machine；Wherein, the degree of superheat of machine in the refrigeration is included at least in the state parameter；
Adjustment module adjusts the aperture of outer machine electric expansion valve for the status signal according to machine in the refrigeration.
11. device according to claim 10, which is characterized in that the adjustment module is specifically used for：
Obtain first proportion of the machine in all refrigeration in machine in the refrigeration for the first state signal for sending out cold medium shortage；
When whether judging first duration of first proportion beyond preset first gravity thresholds beyond preset first It is long；
It is preset to judge whether the second duration of the second status signal that machine sends out refrigerant surplus in all refrigeration exceeds Second duration；
If first duration of first proportion beyond preset first gravity thresholds exceeds first duration, And second duration exceeds second duration, then controls the aperture for reducing the outer machine electric expansion valve.
12. according to the devices described in claim 11, which is characterized in that the adjustment module is additionally operable to：
In first duration of first proportion beyond preset first gravity thresholds beyond first duration and described When second duration does not meet simultaneously beyond second duration, the refrigeration for the third state signal for sending out refrigerant surplus is obtained Second proportion of the interior machine in all refrigeration in machine；
When whether judging third duration of second proportion beyond preset second gravity thresholds beyond preset third It is long；
It is preset to judge whether the 4th duration of the 4th status signal that machine sends out cold medium shortage in all refrigeration exceeds 4th duration；
Judge whether the discharge superheat of the air-conditioning is more than preset degree of superheat threshold value；
If third duration of second proportion beyond second gravity thresholds exceeds the third duration, and described 4th duration exceeds the 4th duration, and the discharge superheat is more than the degree of superheat threshold value, then controls and increase institute State the aperture of outer machine electric expansion valve.
13. device according to claim 12, which is characterized in that the adjustment module is additionally operable to：
When third duration of second proportion beyond second gravity thresholds is beyond the third duration and described When 4th duration exceeds four duration and the discharge superheat does not meet simultaneously more than the degree of superheat threshold value When, control maintains the current aperture of the outer machine electric expansion valve.
14. device according to claim 10, which is characterized in that the acquisition module is specifically used for：
The state parameter is matched with preset at least one state recognition strategy respectively；
According to the matching result of the state parameter and each state recognition strategy, the machine in the refrigeration that controls sends out the state Signal.
15. device according to claim 14, which is characterized in that further include：The degree of superheat adjusts module；The degree of superheat tune Mould preparation block, is used for：
When the status signal is the first state signal, the dbjective state identification for triggering the first state signal is determined Strategy is modified current target superheat degree according to the dbjective state recognition strategy.
16. device according to claim 15, which is characterized in that the degree of superheat adjusts module, is further used for：
When the dbjective state recognition strategy is preset first state recognition strategy, control the target superheat degree amendment It is that other are pre- until the first state signal is changed by the default corresponding dbjective state recognition strategy for the preset degree of superheat If state recognition strategy；
When the dbjective state recognition strategy is preset second state recognition strategy, control reduces the target superheat degree, Until dbjective state recognition strategy variation is other preset state recognition strategies.
17. device according to claim 16, which is characterized in that the acquisition module is additionally operable to：
During state parameter carries out matched with preset at least one state recognition strategy respectively, if the state is joined It counts while matching multiple state recognition strategies triggerings and generate the first state signal, obtain in the multiple state recognition strategy Each state recognition policy priority grade, control send the first state signal of the high state recognition strategy triggering of priority.
18. according to claim 10-17 any one of them devices, which is characterized in that further include：Anti-freeze control module；Institute Anti-freeze control module is stated, is used for：
Obtain the entrance temperature of the refrigerant；
According to the status signal into machine in temperature and the refrigeration, judge whether to enter interior machine anti-freeze control flow；
If the temperature that enters is less than or equal to preset first temperature threshold and the non-refrigerant mistake of the status signal Surplus status signal, control enter the interior machine anti-freeze flow；Wherein, the status signal of the refrigerant surplus includes described Two-state signal and the third state signal；
Persistently detect it is described enter temperature, if it is described enter temperature be more than or equal to preset second temperature threshold value, or The status signal is the status signal of cold medium shortage, and the interior machine anti-freeze flow is exited in control；Wherein, the cold medium shortage Status signal include the first state signal and the 4th status signal.
19. a kind of air-conditioning, which is characterized in that include the control device of claim 10-18 any one of them air-conditionings.
20. a kind of electronic equipment, which is characterized in that including memory, processor；
Wherein, the processor can perform to run with described by reading the executable program code stored in the memory The corresponding program of program code, for realizing the control method of the air-conditioning as described in any in claim 1-9.
21. a kind of non-transitorycomputer readable storage medium, is stored thereon with computer program, which is characterized in that the program The control method of the air-conditioning as described in any in claim 1-9 is realized when being executed by processor.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019237960A1 (en) * 2018-06-12 2019-12-19 合肥美的暖通设备有限公司 Air conditioner control method, air conditioner control apparatus, and air conditioner having same
CN112161390A (en) * 2020-09-15 2021-01-01 珠海格力电器股份有限公司 Electronic expansion valve control method and device and air conditioner
CN114608140A (en) * 2020-12-08 2022-06-10 广东美的暖通设备有限公司 Control method and device of air conditioner, air conditioner and computer storage medium

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111854032B (en) * 2020-07-13 2021-09-21 珠海格力电器股份有限公司 Control method of electronic expansion valve, control method of air conditioner and air conditioner

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5263333A (en) * 1990-11-02 1993-11-23 Kabushiki Kaisha Toshiba Multi-type air conditioner system with optimum control for gaseous flow adjustment valve and liquid expansion valve
KR20050075098A (en) * 2004-01-15 2005-07-20 엘지전자 주식회사 Control method of a multi-type air conditioner
JP2014190554A (en) * 2013-03-26 2014-10-06 Fujitsu General Ltd Air conditioner
CN105115199A (en) * 2015-07-06 2015-12-02 广东美的暖通设备有限公司 VFRVV VRF air conditioning system refrigerant diversion control method and device
CN106052216A (en) * 2016-06-29 2016-10-26 宁波奥克斯电气股份有限公司 Method for controlling electronic expansion valves during multi-connected air conditioning unit heating
CN106482411A (en) * 2015-08-31 2017-03-08 青岛海尔空调电子有限公司 A kind of multi-gang air-conditioner compressor liquid impact prevention control method
CN107560089A (en) * 2017-09-20 2018-01-09 合肥美的暖通设备有限公司 The diagnostic method and diagnostic device of multiple on-line system and its coolant quantity
CN107763889A (en) * 2017-11-21 2018-03-06 宁波奥克斯电气股份有限公司 A kind of multi-online air-conditioning system and its control method
CN107940827A (en) * 2017-11-10 2018-04-20 广东美的暖通设备有限公司 Multi-line system and its refrigerant distribution control method and device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107024027B (en) * 2017-03-29 2019-10-01 广东美的暖通设备有限公司 The control method of air-conditioning system and air-conditioning system
CN108019890B (en) * 2017-12-05 2020-09-04 珠海格力电器股份有限公司 Air conditioner energy efficiency control method and device and air conditioner system
CN108518808B (en) * 2018-06-12 2020-08-04 广东美的暖通设备有限公司 Control method and device of air conditioner and air conditioner with control device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5263333A (en) * 1990-11-02 1993-11-23 Kabushiki Kaisha Toshiba Multi-type air conditioner system with optimum control for gaseous flow adjustment valve and liquid expansion valve
KR20050075098A (en) * 2004-01-15 2005-07-20 엘지전자 주식회사 Control method of a multi-type air conditioner
JP2014190554A (en) * 2013-03-26 2014-10-06 Fujitsu General Ltd Air conditioner
CN105115199A (en) * 2015-07-06 2015-12-02 广东美的暖通设备有限公司 VFRVV VRF air conditioning system refrigerant diversion control method and device
CN106482411A (en) * 2015-08-31 2017-03-08 青岛海尔空调电子有限公司 A kind of multi-gang air-conditioner compressor liquid impact prevention control method
CN106052216A (en) * 2016-06-29 2016-10-26 宁波奥克斯电气股份有限公司 Method for controlling electronic expansion valves during multi-connected air conditioning unit heating
CN107560089A (en) * 2017-09-20 2018-01-09 合肥美的暖通设备有限公司 The diagnostic method and diagnostic device of multiple on-line system and its coolant quantity
CN107940827A (en) * 2017-11-10 2018-04-20 广东美的暖通设备有限公司 Multi-line system and its refrigerant distribution control method and device
CN107763889A (en) * 2017-11-21 2018-03-06 宁波奥克斯电气股份有限公司 A kind of multi-online air-conditioning system and its control method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019237960A1 (en) * 2018-06-12 2019-12-19 合肥美的暖通设备有限公司 Air conditioner control method, air conditioner control apparatus, and air conditioner having same
CN112161390A (en) * 2020-09-15 2021-01-01 珠海格力电器股份有限公司 Electronic expansion valve control method and device and air conditioner
CN114608140A (en) * 2020-12-08 2022-06-10 广东美的暖通设备有限公司 Control method and device of air conditioner, air conditioner and computer storage medium
CN114608140B (en) * 2020-12-08 2024-01-02 广东美的暖通设备有限公司 Air conditioner control method and device, air conditioner and computer storage medium

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