CN106091192B - Air conditioning system and control method thereof - Google Patents
Air conditioning system and control method thereof Download PDFInfo
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- CN106091192B CN106091192B CN201610429166.4A CN201610429166A CN106091192B CN 106091192 B CN106091192 B CN 106091192B CN 201610429166 A CN201610429166 A CN 201610429166A CN 106091192 B CN106091192 B CN 106091192B
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 159
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000003507 refrigerant Substances 0.000 claims abstract description 63
- 238000004146 energy storage Methods 0.000 claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 239000002826 coolant Substances 0.000 claims description 33
- 230000005611 electricity Effects 0.000 claims description 25
- 230000001172 regenerating effect Effects 0.000 claims description 16
- 238000005057 refrigeration Methods 0.000 claims description 13
- 238000007710 freezing Methods 0.000 claims description 6
- 230000008014 freezing Effects 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000005338 heat storage Methods 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 3
- 239000011232 storage material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 238000001816 cooling Methods 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 description 25
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
- F24F5/0021—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice using phase change material [PCM] for storage
-
- 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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- 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
-
- 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
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
- F24F2005/0032—Systems storing energy during the night
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioning system, which comprises a compressor, a first heat exchanger, a second heat exchanger, a control device and an energy storage device, wherein the compressor is connected with the first heat exchanger; the air conditioning system has a first operation mode, a second operation mode and a third operation mode under the switching of the control device; in the first operation mode, the amount of refrigerant sucked into a suction port of the compressor is equal to the amount of refrigerant output by the high-pressure storage tank; in a second operation mode, the refrigerant quantity output by the high-pressure storage tank is less than the refrigerant quantity sucked by the suction port of the compressor, and part of the refrigerant discharged by the compressor is stored in the high-pressure storage tank; in the third operation mode, the compressor stops operating, and the refrigerant stored in the high-pressure storage tank is used for cooling or heating the air conditioning system. The invention also provides a control method of the air conditioning system. The air conditioning system and the control method thereof realize the energy storage function of the air conditioning system and reduce the power consumption; moreover, the energy storage device of the air conditioning system has the characteristics of simple structure and small energy storage loss.
Description
Technical field
The present invention relates to air-conditioning technical fields, more particularly to a kind of air-conditioning system and its control method.
Background technology
Usually, air-conditioning system is using Ice Storage Tank as energy storage equipment, during realizing operation of air conditioner by way of ice-reserving
The peak load shifting of electric energy efficiently uses electric energy with realizing, while reducing electric cost.But it is above-mentioned using Ice Storage Tank
Mode is chiefly used in Large Central Air Conditioning System unit, is not used to domestic air conditioning；And heat-insulating property requirement of the aforesaid way to Ice Storage Tank
Very high, cooling capacity utilization rate is relatively low, influences the performance of air-conditioning system.
Invention content
The problem of can not being applied to domestic air conditioning in view of existing Ice Storage Tank, the purpose of the present invention is to provide a kind of air-conditionings
System and control method, enable domestic air-conditioning system the paddy electricity period carry out accumulation of energy, peak potential period can be by accumulation of energy system
The cold peak load shifting for realizing electric energy.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of air-conditioning system, including compressor, First Heat Exchanger, the second heat exchanger, control device and energy storage equipment；
The energy storage equipment includes high pressure storage tank and low pressure storage tank；The exhaust outlet of the compressor is connected to the high pressure storage tank
First end, the second end of the high pressure storage tank connects the control device；The control device, second heat exchanger and institute
It states First Heat Exchanger to be connected by circulation successively, the control device is additionally coupled to the first end of the low pressure storage tank, the low pressure storage
The second end of tank is connected to the air entry of the compressor；
The air-conditioning system has the first operational mode, the second operational mode and the under the switching of the control device
Three operational modes；Wherein, under first operational mode, the coolant quantity of the air entry sucking of the compressor is equal to the height
Press the coolant quantity of storage tank output；In the second mode of operation, the coolant quantity of the high pressure storage tank output is less than the compression
The part refrigerant of the coolant quantity of the air entry sucking of machine, the compressor discharge is stored in the high pressure storage tank；Described
Under three operational modes, the compressor is out of service, and the refrigerant stored in the high pressure storage tank is used for the system of the air-conditioning system
Cold or heating.
The control device includes the control being arranged in the second end of the high pressure storage tank in one of the embodiments,
Valve.
The control valve is proportion magnetic valve or proportional electrovalve in one of the embodiments,.
The control device further includes four-way valve in one of the embodiments, and the four-way valve includes first port,
Two-port netwerk, third port and the 4th port；
The first port is connected to the control valve, and the second port is connected to the First Heat Exchanger, and described first changes
Hot device connects second heat exchanger, and second heat exchanger connects the 4th port, and the third port connection is described low
Press the first end of storage tank；
When the air-conditioning system is for when freezing, the first port to be connected to the fourth port, the second port
It is connected to the third port；When the air-conditioning system is for when heating, the first port to be connected with the second port, institute
It is connected to the fourth port to state third port.
The energy storage equipment further includes the accumulation of heat knot being placed at the air entry of the compressor in one of the embodiments,
Structure, the connecting line between second end and the air entry of the compressor for being connected to the low pressure storage tank run through the accumulation of heat
Structure.
The regenerative structure includes phase change heat storage material and/or thermal insulation material in one of the embodiments,.
The energy storage equipment further includes being connected to the high pressure storage tank and the compressor in one of the embodiments,
Check valve between exhaust outlet.
Further include throttling set in one of the embodiments, the throttling set be connected to the First Heat Exchanger and
Between second heat exchanger.
Further include first sensor, second sensor and 3rd sensor in one of the embodiments, described first
Sensor is arranged at the First Heat Exchanger, and the second sensor is arranged at second heat exchanger, and the third passes
Sensor is arranged at the energy storage equipment.
The present invention also provides a kind of control methods of air-conditioning system, are used for air-conditioning system described in any one of the above embodiments, packet
Include following steps：
Judge whether the current power period is the paddy electricity period；If so, control air-conditioning system enters the second operational mode；If
It is no, then it controls air-conditioning system and enters the first operational mode or third operational mode.
The step of control air-conditioning system enters the second operational mode in one of the embodiments, specifically includes：
It adjusts the aperture of the control valve and improves the working frequency of compressor, make the coolant quantity of the high pressure storage tank output
Less than the coolant quantity of compressor air suction mouth sucking.
The step of control air-conditioning system enters the first operational mode or third operational mode in one of the embodiments, wraps
It includes：
Judge whether to store the refrigerant of high temperature and pressure in the high pressure storage tank, if so, it is first to control the air-conditioning system
It is introduced into third operational mode, when the cold medium shortage in the high pressure storage tank, then controls the air-conditioning system into the first fortune
Row pattern；
If it is not, then directly controlling the air-conditioning system enters the first operational mode.
Further include following steps in one of the embodiments,：
Whether air-conditioning system is judged for freezing, if so, the first port of control four-way valve is connected to the 4th port, the
Two-port netwerk is connected to third port；If it is not, the first port for then controlling four-way valve is connected to second port, third port and the 4th
Port is connected to.
The beneficial effects of the invention are as follows：
The air-conditioning system and its control method of the present invention, by the way that the high pressure storage tank being connected to the exhaust outlet of compressor is arranged,
When air-conditioning system is when running the paddy electricity period, air-conditioning system is switched to by the second operational mode by control device so that high pressure
The coolant quantity of storage tank output is less than the coolant quantity of compressor sucking so that the refrigerant of part high temperature and pressure is stored in high pressure storage tank
It is interior, realize the accumulation of energy function of the air-conditioning system；It, can be by control device by air-conditioning when air-conditioning system is when peak potential period is run
System is switched to third operational mode so that compressor is out of service, and air-conditioning system is carried out by the refrigerant accumulated in high pressure storage tank
The refrigerating/heating of system, until after the cold medium shortage of accumulation, control air-conditioning system enters back into the first operational mode, to realize
" peak load shifting " of electric energy, reduces the electricity consumption of the air-conditioning system；Moreover, the energy storage equipment of air-conditioning system of the present invention has knot
Structure is simple, and small feature is lost in accumulation of energy, so that the air-conditioning system can be applied not only to large scale business unit, and can be with
Applied to the versatility and performance in domestic air conditioning unit, improving air-conditioning system.
Description of the drawings
Fig. 1 is the system block diagram of one embodiment of air-conditioning system of the present invention；
Fig. 2 is system block diagram of the air-conditioning system under refrigerating state in Fig. 1；
Fig. 3 is system block diagram of the air-conditioning system under heating state in Fig. 1；
Fig. 4 is the flow chart of one embodiment of control method of the air-conditioning system of the present invention.
Specific implementation mode
In order to keep technical scheme of the present invention clearer, below in conjunction with attached drawing, the air-conditioning system to the present invention and its control
Method processed is described in further detail.It should be appreciated that it is described herein specific examples are only used to explain the present invention not
For limiting the present invention.It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application
It can be combined with each other.
As shown in Figure 1, the air-conditioning system of one embodiment of the invention, including compressor 100, First Heat Exchanger 200, second change
Hot device 300, throttling set 600, control device 400 and energy storage equipment 500, wherein throttling set 600 is connected to First Heat Exchanger
200 and second between heat exchanger 300.In the present embodiment, throttling set 600 can be electric expansion valve or capillary.First changes
Hot device 200 can be evaporator, and the second heat exchanger 300 can be condenser.Certainly, First Heat Exchanger 200 or condensation
Device, the second heat exchanger 300 or evaporator.
Energy storage equipment 500 includes high pressure storage tank 510 and low pressure storage tank 520；The exhaust outlet of compressor 100 is connected to high pressure storage tank
510 first end, the second end of high pressure storage tank 510 connect control device 400；Control device 400, the second heat exchanger 300, throttling
Device 600 and First Heat Exchanger 200 are connected by circulation successively, and control device 400 is also connected with the first end of low pressure storage tank 520, low pressure
The air entry of the second end connection compressor 100 of storage tank 520, forms refrigerant circulation circuit.Wherein, high pressure storage tank 510 is for storing
The refrigerant for the high temperature and pressure being discharged from compressor 100 is deposited, low pressure storage tank 520 is used to store the refrigerant of low-temp low-pressure, low pressure storage tank
520 can also connect gas-liquid separator, the gas-liquid separation at air entry to realize compressor 100, to ensure compressor 100
Performance.The air-conditioning system of the present embodiment both can be applied to single cooler, can also be applied to air conditioner.
Further, control device 400 includes control valve 410, and the second end in high pressure storage tank 510 is arranged in control valve 410,
Control valve 410 is used to control the coolant quantity of the output of high pressure storage tank 510, can by the aperture of adjusting control valve 410 in the present embodiment
To realize the control of the coolant quantity exported to high pressure storage tank 510, to realize the accumulation of energy function of the air-conditioning system, and pass through accumulation of energy
Refrigeration or the function of heating.Also, the aperture of adjusting control valve 410 can also be passed through so that the air-conditioning system of the present embodiment can
To realize the change fan-out capability function of frequency-conversion air-conditioning system, the performance of the air-conditioning system is improved.
In the present embodiment, by the way that above-mentioned energy storage equipment 500 is arranged so that switching of the air-conditioning system in control device 400
There are three types of operational mode, respectively the first operational mode, the second operational mode and third operational modes for lower tool.Wherein,
Under one operational mode, the coolant quantity of 100 air entry of compressor sucking is equal to the coolant quantity that high pressure storage tank 510 exports, at this time air-conditioning
System is in the case where conventional heating or refrigeration, and refrigerant is not stored in high pressure storage tank 510.
In the second operating mode, the coolant quantity that high pressure storage tank 510 exports is less than the refrigerant of 100 air entry of compressor sucking
Amount, at this time air-conditioning system can be operated in the paddy electricity period, the refrigerant part that compressor 100 is discharged enter refrigerant circulation circuit into
The refrigerant of the heating of row air-conditioning system or refrigeration, another part high temperature and pressure is stored in high pressure storage tank 510, to realize the air-conditioning
Accumulation of energy function of the system in the paddy electricity period.
Under third operational mode, compressor 100 is out of service, is carried out by the refrigerant stored in high pressure storage tank 510 empty
The refrigeration of adjusting system or heating.Air-conditioning system can be operated in peak potential period at this time, to realize the air-conditioning system in peak potential period
The function of being heated or freezed by accumulation of energy reduces the usage amount of electric energy to meet " peak load shifting " of electric energy.Work as high pressure storage tank
When the cold medium shortage stored in 510, the operational mode of air-conditioning system is switched to the first operational mode by control device 400.This reality
It applies in example, it, can be by control valve 410 under third operational mode on the basis of ensureing air-conditioning system heating or refrigeration effect
Aperture is arranged smaller, to extend the time of accumulation of energy heating or refrigeration, reduces the usage amount of electric energy, using electricity wisely to greatest extent
Cost.
In one embodiment, when the air-conditioning system is applied to single cooler, the exhaust outlet connection high pressure storage of compressor 100
The first end of tank 510, the control valve 410 of the second end connection control device 400 of high pressure storage tank 510；Control valve 410, second are changed
Hot device 300 and First Heat Exchanger 200 are sequentially connected, and First Heat Exchanger 200 is connected to the first end of low pressure storage tank 520, low pressure storage
The air entry of the second end connection compressor of tank 520, forms coolant loop.At this point, by the aperture of adjusting control valve 410 and
The working frequency of compressor can make the single cooler be operated in the first operational mode, the second operational mode or third operational mode.
When the single cooler is operated in the first operational mode, the case where air-conditioning system is in conventional refrigerant at this time, high pressure storage
Refrigerant is not stored in tank 510.When the single cooler is operated in the second operational mode, when air-conditioning system can be operated in paddy electricity at this time
Section, the refrigerant part that compressor 100 is discharged enter the refrigeration that refrigerant circulation circuit carries out air-conditioning system, and another part high temperature is high
The refrigerant of pressure is stored in high pressure storage tank 510, with realize the air-conditioning system the paddy electricity period accumulation of energy function.When the single cooler work
Make in third operational mode, compressor 100 is out of service, and air-conditioning system is carried out by the refrigerant stored in high pressure storage tank 510
Refrigeration, at this time air-conditioning system can be operated in peak potential period.
In another embodiment, control device 400 further includes four-way valve 420, and four-way valve 420 includes first port A, the
Two-port netwerk B, third port C and the 4th port D.The first port A of four-way valve 420 is connected to control valve 410, and control valve 410 connects
Between the second end of high pressure storage tank 510 and the first port A of four-way valve 420, the exhaust outlet of compressor 100 is connected to high pressure storage
The first end of tank 510.Second port B connections First Heat Exchanger 200, First Heat Exchanger are sequentially connected throttling set 600 and second
Heat exchanger 300, the second heat exchanger 300 connect the 4th port D, the first end of third port C connection low pressure storage tanks 520, low pressure storage
The air entry of the second end connect compressor 100 of tank 520.
When air-conditioning system is used to freeze, four-way valve 420 is in power-up state, and first port A is connected to the 4th port D,
Second port B is connected to third port C.When air-conditioning system is for when heating, four-way valve 420 to be in power-down state, first port A
It is connected to second port B, third port C is connected to the 4th port D.In the present embodiment, by the connection shape for switching four-way valve 420
State is realized to the refrigeration of the air-conditioning system and the control of heating.At this point, the air-conditioning system is the changes in temperature for heating or freezing
Machine.
Further, control device 400 can also include controller (not shown), and controller is for controlling four-way valve
420 connected state, and control the aperture of control valve 410 and the working frequency of compressor.In one embodiment, control valve
410 can be proportion magnetic valve or proportional electrovalve etc., controller can according to its output pulse signal duty ratio come
Realize the adjusting to the aperture of control valve 410, to realize under each operational mode, the coolant quantity of the output of high pressure storage tank 510
Control.
As a further improvement, energy storage equipment 500 further includes the regenerative structure being placed at the air entry of compressor 100
530, regenerative structure 530 includes phase change heat storage material and/or thermal insulation material.In the present embodiment, it is connected to the of low pressure storage tank 520
Connecting line between two ends and the air entry of compressor 100 runs through regenerative structure 530 so that the refrigerant in connecting line exists
530 endothermic gasification of regenerative structure, later, connecting line is connected to the air entry of compressor 100, to ensure the suction of compressor 100
The gas degree of superheat.The present embodiment specific set-up mode of the connecting line in regenerative structure 530 is not done it is specifically defined, that is,
It says, any possible mode may be used in flow path of the connecting line in regenerative structure 530.
In one embodiment, energy storage equipment 500 further includes the exhaust outlet for being connected to high pressure storage tank 510 and compressor 100
Between check valve 540, the refrigerant return that check valve 540 is used to avoid accumulating in high pressure storage tank 510 to compressor 100, to
Ensure the reliability of compressor operating.In the present embodiment, each component of energy storage equipment 500 can be integrated in same device
It is interior.
As a further improvement, the air-conditioning system of the present embodiment further includes first sensor (not shown), the second sensing
Device (not shown) and 3rd sensor (not shown), first sensor can be arranged at First Heat Exchanger 200, the first sensing
Device can be temperature sensor, for detecting the environment temperature at First Heat Exchanger 200.Second sensor setting is in the second heat exchange
At device 300, second sensor can be temperature sensor, for detecting the temperature at the second heat exchanger 300.3rd sensor is set
It sets at energy storage equipment 500, specifically, 3rd sensor is placed in regenerative structure 530, for detecting in regenerative structure 530
Temperature.It is of course also possible to the 4th sensor and the 5th sensor are respectively set in high pressure storage tank 510 and low pressure storage tank 520, the
Four sensors and the 5th sensor can be pressure sensor.First sensor, second sensor, 3rd sensor, the 4th pass
Sensor and the 5th sensor are connected to controller.Certainly, above-mentioned each sensor can also be humidity sensor etc..Pass through
Sensor is set within air-conditioning systems, it is ensured that reliable, the safe operation of air-conditioning system.
Illustrate the operation principle of the air-conditioning system of the present embodiment below in conjunction with the accompanying drawings：
As shown in Fig. 2, when the air-conditioning system is in refrigerating state, controller control the first port A of four-way valve 420 with
4th port D is connected to, and second port B is connected to third port C, and four-way valve 420 may be at power-down state at this time.At this point, from
Compressor 100 be discharged high temperature and pressure refrigerant pass sequentially through the second heat exchanger 300, throttling set 600 and First Heat Exchanger 200 into
The second port B that four-way valve is returned to after row heat exchange, compressor is returned to by the third port C of four-way valve 420 through low pressure storage tank 520
100 air entry.
When air-conditioning system needs are run under conventional operating mode, aperture and compression of the controller by adjusting control valve 410
The working frequency of machine so that the air-conditioning system works in the first operating mode.At this point, the air entry sucking of compressor 100
Refrigerant is through compressor 100, check valve 540, high pressure storage tank 510, control valve 410 and 420 first port A of four-way valve and the 4th end
Freeze into the second heat exchanger 300 after mouth D, i.e., the coolant quantity that high pressure storage tank 510 exports is equal to the air-breathing of compressor 100
The coolant quantity of mouthful sucking, does not accumulate refrigerant in high pressure storage tank 510.Later, refrigerant through throttling set 600, First Heat Exchanger 200,
The suction of compressor 100 is returned to after the second port B and third port C of four-way valve 420, low pressure storage tank 520 and regenerative structure 530
Gas port completes a refrigeration cycle.
When air-conditioning system, which is operated in the paddy electricity period, needs accumulation of energy, controller by the aperture of adjusting control valve 410 and
The working frequency of compressor so that air-conditioning system is in the second operational mode.At this point, the air entry sucking of compressor 100 is cold
Matchmaker enters through compressor 100, check valve 540 in high temperature storage tank 510, and which part refrigerant is stored in high pressure storage tank 510, another
Part refrigerant is condensed through control valve 410, four-way valve 420 into the second heat exchanger 300, and later, refrigerant is through throttling set 600
Into freezing in First Heat Exchanger 200, then refrigerant is after four-way valve 420, low pressure storage tank 520 and regenerative structure 530
Return to the air entry of compressor 100.I.e. in the second operating mode, the coolant quantity that high pressure storage tank 510 exports is less than compressor 100
The coolant quantity of air entry sucking, the refrigerant of reservoir part high temperature and pressure, realizes air-conditioning system in paddy electricity in high pressure storage tank 510
The accumulation of energy function of Duan Yunhang.By the way of carrying out accumulation of energy using Ice Storage Tank, the energy loss of the way of energy storage of the present embodiment
It is small, and the structure of energy storage equipment is simpler, convenient for being applied to a variety of air-conditionings such as normal domestic use air-conditioning and large commercial unit
Unit.
When air-conditioning system needs to be operated in peak potential period, it is out of service that controller can first control compressor 100, passes through
The refrigerant stored in high pressure storage tank 510 carries out the refrigeration of air-conditioning system.At this point, passing through the aperture of controller adjusting control valve 410
And the working frequency of compressor so that the air-conditioning system is in third operational mode.At this point, the height accumulated in high pressure storage tank 510
The refrigerant of warm high pressure is condensed through control valve 410 and four-way valve 420 into the second heat exchanger 300, later through throttling set 600
Into freezing in First Heat Exchanger 200, then refrigerant returns to low pressure storage tank 520 by four-way valve 420.Work as high pressure storage tank
When the cold medium shortage stored in 510, alternatively, when high pressure storage tank 510 is equal with the pressure in low pressure storage tank 520, controller control
Compressor 100 processed is run, and air-conditioning system is made to be switched to the first operational mode by third operational mode.
As shown in figure 3, when the air-conditioning system is in heating state, controller control the first port A of four-way valve 420 with
Second port B connections, third port C are connected to the 4th port D, and four-way valve 420 may be at power-up state at this time.At this point, from
Compressor 100 be discharged high temperature and pressure refrigerant pass sequentially through First Heat Exchanger 200, throttling set 600 and the second heat exchanger 300 into
After row heat exchange, the air entry of compressor 100 is returned to through low pressure storage tank 520 by the third port C of four-way valve 420.
When air-conditioning system needs are run under conventional operating mode, work that controller passes through adjusting control valve 410 and compressor
Working frequency so that air-conditioning system is in the first operational mode.At this point, the refrigerant of the air entry sucking of compressor 100 is through check valve
540, it is heated into First Heat Exchanger 200 after high pressure storage tank 510 and four-way valve 420, i.e., high pressure storage tank 510 exports cold
Matchmaker's amount is equal to the coolant quantity of 100 air entry of compressor sucking, does not accumulate refrigerant in high pressure storage tank 510.Later, refrigerant is filled through throttling
Set the air entry that the 600, second heat exchanger 300, four-way valve 420, low pressure storage tank 520 and regenerative structure 530 return to compressor 100.
When air-conditioning system, which is operated in the paddy electricity period, needs accumulation of energy, controller by the aperture of adjusting control valve 410 and
The working frequency of compressor so that air-conditioning system is in the second operational mode.At this point, the air entry sucking of compressor 100 is cold
Matchmaker enters through check valve 540 in high temperature storage tank 510, and which part refrigerant is stored in high pressure storage tank 510, another part refrigerant warp
Control valve 410, four-way valve 420 are heated into First Heat Exchanger 200, and later, refrigerant exchanges heat through throttling set 600, second
Device 300, four-way valve 420, low pressure storage tank 520 and regenerative structure 530 return to the air entry of compressor 100.Mould is run second
Under formula, the coolant quantity that high pressure storage tank 510 exports is less than the coolant quantity of 100 air entry of compressor sucking, is accumulated in high pressure storage tank 510
The refrigerant of part high temperature and pressure, to realize the accumulation of energy of paddy electricity period operation, by the way of carrying out accumulation of energy using Ice Storage Tank, this
The energy loss of the way of energy storage of embodiment is small, and the structure of energy storage equipment is simpler, convenient for being applied to normal domestic use air-conditioning
And in a variety of air-conditioner sets such as large commercial unit.
When air-conditioning system needs to be operated in peak potential period, it is out of service that controller can first control compressor 100, passes through
The refrigerant stored in high pressure storage tank 510 carries out the heating of air-conditioning system.At this point, aperture of the controller by adjusting control valve 410
And the working frequency of compressor so that the air-conditioning system is in third operational mode.At this point, accumulated in high pressure storage tank 510
The refrigerant of high temperature and pressure is heated through control valve 410 and four-way valve 420 into First Heat Exchanger 200, later through throttling set
600, the second heat exchanger 300 and four-way valve 420 return to low pressure storage tank 520.When the cold medium shortage stored in high pressure storage tank 510,
Alternatively, when high pressure storage tank 510 is equal with the pressure in low pressure storage tank 520, controller controls compressor 100 and runs, and makes air-conditioning
System is switched to the first operational mode by third operational mode.
In other embodiments, the air-conditioning system of the present embodiment can by the aperture of controller adjusting control valve 410, from
And realize the control to coolant quantity in heating circuit or refrigerating circuit, and then realize the function of frequency-conversion air-conditioning system, improve this
The performance of the air-conditioning system of embodiment.
The present invention also provides a kind of control methods of above-mentioned air-conditioning system, are used for the air-conditioning system of any of the above-described embodiment
System, includes the following steps：
S100, judge whether the current power period is the paddy electricity period；If so, thening follow the steps S200, air-conditioning system is controlled
Into the second operational mode so that the coolant quantity that high pressure storage tank 510 exports is less than the refrigerant that the air entry of compressor 100 sucks
Amount makes to accumulate the refrigerant for having a certain amount of high temperature and pressure in high pressure storage tank 510, to realize that air-conditioning system is run in the paddy electricity period
Accumulation of energy function.If it is not, thening follow the steps S300, control air-conditioning system enters the first operational mode or third operational mode.
For example, can judge whether the current power period is paddy electricity period, preset electricity consumption according to the preset electricity consumption period
Period can be daytime 7：00 to night 10:00 is peak potential period, night 10:Morning 7 00 to next day：00 is the paddy electricity period.Control
The controller of device 400 processed can judge whether air-conditioning system operates in the paddy electricity period according to the preset electricity consumption period.
In one embodiment, the step of control air-conditioning system enters the second operational mode specifically includes：
The aperture of adjusting control valve 410 and the working frequency for improving compressor 100, the refrigerant for making high pressure storage tank 510 export
Amount is less than the coolant quantity that the air entry of compressor 100 sucks, so that accumulation has a certain amount of high temperature high in high pressure storage tank 510
The refrigerant of pressure realizes the accumulation of energy function that air-conditioning system is run in the paddy electricity period.
In one embodiment, control air-conditioning system enter the first operational mode or third operational mode the step of include：
Judge whether to store the refrigerant of high temperature and pressure in the high pressure storage tank 510, if so, control air-conditioning system is first
Into third operational mode, at this point, compressor 100 is out of service, air-conditioning system is carried out by the refrigerant that high pressure storage tank 510 is stored
Heating or refrigeration, when the cold medium shortage in high pressure storage tank 510, then control air-conditioning system enter the first operational mode, compression
Machine 100 resumes operation；If it is not, then directly controlling air-conditioning system enters the first operational mode.
It specifically, can be judging whether be stored in high pressure storage tank 510 by way of detecting the pressure of high pressure storage tank 510
The refrigerant of high temperature and pressure, and judge whether the refrigerant stored in high pressure storage tank 510 is insufficient.For example, when in high pressure storage tank 510
When pressure is approximately equal to the pressure in low pressure storage tank 520, then the cold medium shortage stored in high pressure storage tank 510 is may determine that.
Further, the control method of air-conditioning system further includes following steps：
Judge whether air-conditioning system operates in refrigerating state, if so, the first port A and the 4th of control four-way valve 420
Port D is connected to, and second port B is connected to third port C, and four-way valve 420 may be at power-down state at this time；If it is not, then controlling
The first port A of four-way valve 420 is connected to second port B, and third port C is connected to the 4th port D, and four-way valve 420 can at this time
To be in power-up state.
The specific implementation procedure of the control method of the air-conditioning system of the present embodiment, reference can be made to above in connection with air-conditioning system
The description of operation principle, details are not described herein again.
The air-conditioning system and its control method of the present invention, by the way that the high pressure storage tank being connected to the exhaust outlet of compressor is arranged,
When air-conditioning system is when running the paddy electricity period, air-conditioning system is switched to by the second operational mode by control device so that high pressure
The coolant quantity of storage tank output is less than the coolant quantity of compressor sucking so that the refrigerant of part high temperature and pressure is stored in high pressure storage tank
It is interior, realize the accumulation of energy function of the air-conditioning system；When air-conditioning system is when peak potential period is run, by control device by air-conditioning system
It is switched to third operational mode so that compressor is out of service, and air-conditioning system is carried out by the refrigerant accumulated in high pressure storage tank
Refrigerating/heating, until after the cold medium shortage of accumulation, control air-conditioning system enters back into the first operational mode, to realize electric energy
" peak load shifting ", reduce the electricity consumption of the air-conditioning system；Moreover, the energy storage equipment of air-conditioning system of the present invention has structure letter
Single, accumulation of energy is lost small feature, so that the air-conditioning system can be applied not only to large scale business unit, and can be applied
In domestic air conditioning unit, the versatility and performance of air-conditioning system are improved.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (12)
1. a kind of air-conditioning system, which is characterized in that including compressor (100), First Heat Exchanger (200), the second heat exchanger
(300), control device (400) and energy storage equipment (500)；
The energy storage equipment (500) includes high pressure storage tank (510) and low pressure storage tank (520)；The exhaust outlet of the compressor (100)
It is connected to the first end of the high pressure storage tank (510), the second end of the high pressure storage tank (510) connects the control device (400)；
The control device (400), second heat exchanger (300) and the First Heat Exchanger (200) are connected by circulation successively, the control
Device (400) processed is additionally coupled to the first end of the low pressure storage tank (520), and the second end of the low pressure storage tank (520) is connected to institute
State the air entry of compressor；The control device (400) includes control valve of the setting in the second end of the high pressure storage tank (510)
(410)；
The control device (400) was used for according to the current power period, by adjusting the aperture of the control valve (410) and described
The working frequency of compressor controls the air-conditioning system and operates in the first operational mode, the second operational mode and third operation
Pattern；Wherein, under first operational mode, the coolant quantity of the air entry sucking of the compressor (100) is equal to the height
The coolant quantity for pressing storage tank (510) to export；In the second mode of operation, the coolant quantity of high pressure storage tank (510) output is small
In the coolant quantity that the air entry of the compressor (100) sucks, the part refrigerant that the compressor (100) is discharged is stored in described
In high pressure storage tank (510)；Under the third operational mode, the compressor is out of service, storage in the high pressure storage tank (510)
Refrigeration or heating of the refrigerant deposited for the air-conditioning system.
2. air-conditioning system according to claim 1, which is characterized in that the control valve (410) is proportion magnetic valve or ratio
Example motor-driven valve.
3. air-conditioning system according to claim 1, which is characterized in that the control device further includes four-way valve (420), institute
It includes first port A, second port B, third port C and the 4th port D to state four-way valve (420)；
The first port A is connected to the control valve (410), and the second port B is connected to the First Heat Exchanger (200), institute
It states First Heat Exchanger (200) and connects second heat exchanger (300), second heat exchanger (300) is connected to the 4th port
D, the third port C are connected to the first end of the low pressure storage tank (520)；
When the air-conditioning system for freeze when, the first port A is connected to the 4th port D, the second port B and
The third port C connections；When the air-conditioning system is used to heat, the first port A is connected to the second port B,
The third port C is connected to the 4th port D.
4. air-conditioning system according to claim 1, which is characterized in that the energy storage equipment (500) further include be placed in it is described
Regenerative structure (530) at the air entry of compressor (100), second end for being connected to the low pressure storage tank (520) and described
Connecting line between the air entry of compressor (100) runs through the regenerative structure (530).
5. air-conditioning system according to claim 4, which is characterized in that the regenerative structure (530) includes phase-transition heat-storage material
Material and/or thermal insulation material.
6. air-conditioning system according to claim 1, which is characterized in that the energy storage equipment (500) further includes being connected to institute
State the check valve (540) between high pressure storage tank (510) and the exhaust outlet of the compressor (100).
7. according to claim 1-6 any one of them air-conditioning systems, which is characterized in that further include throttling set (600), it is described
Throttling set (600) is connected between the First Heat Exchanger (200) and second heat exchanger (300).
8. according to claim 1-6 any one of them air-conditioning systems, which is characterized in that further include first sensor, the second biography
Sensor and 3rd sensor, the first sensor are arranged at the First Heat Exchanger, and the second sensor setting exists
At second heat exchanger, the 3rd sensor is arranged at the energy storage equipment.
9. a kind of control method of air-conditioning system, which is characterized in that claim 1-8 any one of them air-conditioning systems are used for,
Include the following steps：
Judge whether the current power period is the paddy electricity period；If so, passing through the aperture for adjusting the control valve and the compression
The working frequency of machine, control air-conditioning system enter the second operational mode；
If it is not, then by adjusting the aperture of the control valve and the working frequency of the compressor, control air-conditioning system enters the
One operational mode or third operational mode.
10. control method according to claim 9, which is characterized in that control air-conditioning system enters the second operational mode
Step specifically includes：
It adjusts the aperture of the control valve and improves the working frequency of compressor, the coolant quantity of the high pressure storage tank output is made to be less than
The coolant quantity of the air entry sucking of the compressor.
11. control method according to claim 9, which is characterized in that control air-conditioning system enter the first operational mode or
The step of third operational mode includes：
Judge whether to store the refrigerant of high temperature and pressure in the high pressure storage tank, if so, control the air-conditioning system first into
Enter third operational mode, when the cold medium shortage in the high pressure storage tank, then controls the air-conditioning system into the first operation mould
Formula；
If it is not, then directly controlling the air-conditioning system enters the first operational mode.
12. the control method of air-conditioning system according to claim 9, which is characterized in that further include following steps：
Whether air-conditioning system is judged for freezing, if so, the first port of control four-way valve is connected to the 4th port, second end
Mouth is connected to third port；If it is not, the first port for then controlling four-way valve is connected to second port, third port and the 4th port
Connection.
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| CN106801977B (en) * | 2017-01-09 | 2019-03-15 | 美的集团股份有限公司 | A kind of adjusting method of conditioners running conditions, system and air conditioner |
| CN107339785A (en) * | 2017-06-26 | 2017-11-10 | 广东美的制冷设备有限公司 | Air-conditioning system and its control method |
| US20190143783A1 (en) * | 2017-11-16 | 2019-05-16 | Ford Global Technologies, Llc | Multifunction reservoir for a secondary loop, climate control system and a secondary loop climate control system incorporating that multifunction reservoir |
| IL304934A (en) * | 2021-02-04 | 2023-10-01 | Storage Drop Ltd | Systems and methods for compressing, storing, and expanding refrigerant in order to supply low-cost air conditioning |
| CN115031322B (en) * | 2022-08-15 | 2022-11-25 | 浙大宁波理工学院 | Multifunctional energy storage system and air conditioner for solar spectrum frequency division and cascade utilization |
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