CN112710072B - Outdoor unit temperature control method and device and air conditioner - Google Patents
Outdoor unit temperature control method and device and air conditioner Download PDFInfo
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- CN112710072B CN112710072B CN202011598967.6A CN202011598967A CN112710072B CN 112710072 B CN112710072 B CN 112710072B CN 202011598967 A CN202011598967 A CN 202011598967A CN 112710072 B CN112710072 B CN 112710072B
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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
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
- F24F11/47—Responding to energy costs
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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
- F24F11/62—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
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
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- Physics & Mathematics (AREA)
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- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an outdoor unit temperature control method and device and an air conditioner, and relates to the technical field of air conditioners. The outdoor unit temperature control method comprises the following steps: receiving an outer ring temperature value, wherein the outer ring temperature value represents the temperature of the external environment where the outdoor unit is located; calculating a power limit value according to the outer ring temperature value; the power limiting value is used for limiting the running power of the outdoor unit so as to reduce the heat productivity of the outdoor unit; receiving a voltage value of an outdoor unit; calculating a current limit value according to the voltage value and the power limit value of the outdoor unit; the current limit value is used for limiting the current of the outdoor unit so as to reduce the heat productivity of the outdoor unit. The invention also provides an outdoor unit temperature control device and an air conditioner, and the outdoor unit temperature control device can execute the outdoor unit temperature control method. The outdoor unit temperature control method, the outdoor unit temperature control device and the air conditioner can improve unit faults caused by overhigh temperature of internal elements of the outdoor unit in the prior art.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an outdoor unit temperature control method and device and an air conditioner.
Background
At present, an outdoor unit of an air conditioner is exposed in the external environment, and in a high-temperature season of refrigeration, because of high-temperature insolation, the temperature of electric control components in the unit is in a high-temperature state, so that the components are easy to lose efficacy due to overhigh temperature, the air conditioner is easy to malfunction, and customer complaints are caused.
The current control strategy for the electric control temperature generally controls the total heat productivity by limiting a fixed power value or a current value, so that the temperature of an electric control component in a unit is in an effective range.
However, in the prior art, the performance of the air conditioner cannot be fully exerted while controlling the temperature, so that the use experience of a user is influenced.
Disclosure of Invention
The invention solves the problem of improving the unit failure caused by overhigh temperature of the internal elements of the outdoor unit in the prior art.
In order to solve the above problems, the present invention provides a method for controlling the temperature of an outdoor unit, comprising:
receiving an outer ring temperature value, wherein the outer ring temperature value represents the temperature of the external environment where the outdoor unit is located;
calculating a power limit value according to the outer ring temperature value; wherein the power limit value is used for limiting the operation power of the outdoor unit;
limiting the operation power of the outdoor unit according to the power limit value so as to reduce the heat productivity of the outdoor unit;
receiving a voltage value of an outdoor unit;
calculating a current limit value according to the voltage value of the outdoor unit and the power limit value; the current limit value is used for limiting the current of the outdoor unit;
and limiting the current of the outdoor unit according to the current limit value so as to reduce the heat productivity of the outdoor unit.
Compared with the prior art, the outdoor unit temperature control method provided by the embodiment of the invention has the beneficial effects that:
the outdoor unit temperature control method can limit the running power of the outdoor unit according to the outdoor temperature value, and dynamically adjust the power limit value according to the environment temperature of the external environment where the outdoor unit is located, so that the heat generated by the outdoor unit is reduced, and the influence caused by overhigh temperature of the outdoor unit is avoided; the performance of the air conditioner can be maximized, and the using effect is improved. In addition, the outdoor unit temperature control method can limit the current of the outdoor unit according to the voltage value of the outdoor unit so as to solve the problem of the increase of the heat generation amount caused by the increase of the current while limiting the operation power of the outdoor unit and avoiding the increase of the heat generation amount caused by the increase of the current caused by the reduction of the voltage. The machine set fault caused by overhigh temperature of the internal elements of the outdoor unit in the prior art can be improved, and therefore the purpose of improving the use experience of users is achieved.
Optionally, the step of calculating a power limit value according to the outer ring temperature value includes:
comparing the outer ring temperature value with a first preset temperature value;
and if the outer ring temperature value is less than or equal to the first preset temperature value, taking the rated power of the outdoor unit as the power limit value.
Optionally, the method further comprises:
if the outer ring temperature value is greater than the first preset temperature value, comparing the outer ring temperature value with a second preset temperature value, wherein the second preset temperature value is greater than the first preset temperature value;
and if the outer ring temperature value is less than or equal to the second preset temperature value, calculating the power limit value according to a first preset power value, an outer ring temperature value and a first preset temperature value.
Optionally, the formula for calculating the power limit value according to the first preset power value, the outer ring temperature value and the first preset temperature value is as follows:
P＝P 1 +a×(T-T 1 )；
wherein P represents a power limit value, P 1 Represents a first preset power value, a represents a slope coefficient, T represents an outer ring temperature value, T 1 Representing a first preset temperature value.
Optionally, the slope coefficient a is calculated as follows:
a＝(P m -P 1 )/(T 2 -T 1 )；
wherein, P m Indicating rated power, T 2 Representing a second preset temperature value.
Optionally, the method further comprises:
if the outer ring temperature value is greater than the second preset temperature value, comparing the outer ring temperature value with a third preset temperature value, wherein the third preset temperature value is greater than the second preset temperature value;
if the outer ring temperature value is less than or equal to the third preset temperature value, calculating the power limit value according to a second preset power value, the outer ring temperature value and the second preset temperature value.
Optionally, the formula for calculating the power limit value according to the second preset power value, the outer-ring temperature value, and the second preset temperature value is as follows:
P＝P 2 +b×(T-T 2 )
wherein P represents a power limit value, P 2 Represents a second preset power value, b represents a slope coefficient, T represents an outer ring temperature value, T 2 Representing a second preset temperature value.
Optionally, the slope coefficient b is calculated as follows:
b＝(P 1 -P 2 )/(T 3 -T 2 )；
wherein, P 1 Representing said first predetermined power value, P 2 Representing said second predetermined power difference, T 3 Representing said third predetermined temperature value, T 2 Representing the second preset temperature value.
Optionally, the step of calculating the current limit value according to the outdoor unit voltage value and the power limit value includes:
comparing the voltage value of the outdoor unit with a rated voltage value;
and if the outdoor unit voltage value is smaller than or equal to the rated voltage value, dividing the power limit value by the rated voltage value to obtain the current limit value.
An outdoor unit temperature control device comprising:
the receiving module is used for receiving an outer ring temperature value and an outdoor unit voltage value, wherein the outer ring temperature value represents the temperature of the external environment where the outdoor unit is located.
And the calculation module is used for calculating a power limit value according to the outer ring temperature value and calculating a current limit value according to the outdoor unit voltage value and the power limit value, wherein the power limit value is used for limiting the running power of the outdoor unit, and the current limit value is used for limiting the current of the outdoor unit.
And the control module is used for limiting the running power of the outdoor unit according to the power limiting value so as to reduce the heat productivity of the outdoor unit, and is also used for limiting the current of the outdoor unit according to the current limiting value so as to reduce the heat productivity of the outdoor unit.
An air conditioner includes a controller that can perform an outdoor unit temperature control method. The outdoor unit temperature control method includes:
receiving an outer ring temperature value, wherein the outer ring temperature value represents the temperature of the external environment where the outdoor unit is located;
calculating a power limit value according to the outer ring temperature value; wherein the power limit value is used for limiting the operation power of the outdoor unit;
limiting the operation power of the outdoor unit according to the power limit value so as to reduce the heat productivity of the outdoor unit;
receiving a voltage value of an outdoor unit;
calculating a current limit value according to the voltage value of the outdoor unit and the power limit value; wherein the current limit value is used for limiting the current of the outdoor unit;
and limiting the current of the outdoor unit according to the current limit value so as to reduce the heat productivity of the outdoor unit.
The embodiment of the invention also provides an outdoor unit temperature control method and an air conditioner, wherein the outdoor unit temperature control method and the air conditioner can execute the outdoor unit temperature control method, and the beneficial effects of the outdoor unit temperature control device and the air conditioner in comparison with the prior art are the same as the beneficial effects of the outdoor unit temperature control method in comparison with the prior art, and are not repeated herein.
Drawings
Fig. 1 is a flowchart of an outdoor unit temperature control method provided in an embodiment of the present application;
fig. 2 is a flowchart of step S2 in the outdoor unit temperature control method according to the embodiment of the present application;
fig. 3 is a flowchart of step S5 in the outdoor unit temperature control method according to the embodiment of the present application;
fig. 4 is a schematic diagram of functional modules of an outdoor unit temperature control device according to an embodiment of the present disclosure.
Description of the reference numerals:
10-a receiving module; 20-a calculation module; 30-control module.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The embodiment of the application provides an air conditioner which is used for providing an air conditioning effect for a designated area so as to improve the comfort of the designated area. The air conditioner includes an outdoor unit and an indoor unit. The indoor unit and the outdoor unit are connected with each other, the indoor unit is installed in a designated area, and the indoor unit can lead out airflow to the designated area to achieve the purpose of air conditioning; the outdoor unit is used for being installed in the external environment and used for conveying the refrigerant to the indoor unit, so that the indoor unit can conveniently realize the air conditioning effect.
In the prior art, under the condition of high external environment temperature, the outdoor unit generates a large amount of heat after running for a period of time, so that the problem of overheating and damage faults of electronic components in the outdoor unit caused by overhigh temperature rise of the outdoor unit can occur. In addition, in the prior art, the heat generated by the outdoor unit itself is reduced by limiting the operating power of the outdoor unit, so as to avoid the situation that the temperature of the outdoor unit is too high, but the performance of the air conditioner cannot be fully exerted, and the use experience of a user is reduced. In addition, in the prior art, the power is limited by adopting a fixed limit value, so that the effective use of the air conditioner is influenced, and the use effect is reduced. In addition, when the power is limited, the current of the outdoor unit increases due to the voltage drop of the outdoor unit, and thus the heat generation amount of the outdoor unit increases, which may cause the electronic components to be overheated and damaged.
In an embodiment of the present application, the outdoor unit may include a controller, and the controller may be configured to receive a temperature of an external environment and a voltage of the outdoor unit. Which may be an integrated circuit chip, having signal processing capabilities. The controller may be a general-purpose processor, and may include a Central Processing Unit (CPU), a single chip Microcomputer (MCU), a Micro Controller Unit (MCU), a Complex Programmable Logic Device (CPLD), a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), an embedded ARM, and other chips, where the controller may implement or execute the methods, steps, and Logic blocks disclosed in the embodiments of the present invention.
In a possible implementation manner, the air conditioner may further include a memory for storing program instructions executable by the controller, for example, the air conditioner control device provided in the embodiment of the present application, where the air conditioner control device provided in the embodiment of the present application includes at least one of the program instructions stored in the memory in the form of software or firmware. The Memory may be a stand-alone external Memory including, but not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Read-Only Memory (EPROM), electrically Erasable Read-Only Memory (EEPROM). The memory may also be integrated with the controller, for example, the memory may be integrated with the controller on the same chip.
In order to solve the above-mentioned technical problem, referring to fig. 1, an embodiment of the present invention provides a method for controlling a temperature of an outdoor unit. The outdoor unit temperature control method comprises the following steps:
and step S1, receiving the outer ring temperature value.
The outer ring temperature value represents the temperature of the external environment where the outdoor unit is located. The outer ring temperature value may be obtained by detecting the temperature of the external environment by a temperature sensor provided in the outdoor unit, and may be transmitted to the controller after detecting the temperature of the external environment, and the controller may receive the outer ring temperature value.
And step S2, calculating a power limit value according to the outer ring temperature value.
Wherein the power limit value is used for limiting the operation power of the outdoor unit. In other words, in the case where the controller controls the operation of the outdoor unit at the power limit value, the operation power of the outdoor unit may maximally reach the power limit value.
It should be noted that, in some embodiments, the operation power may represent the total power of the operation of the outdoor unit; of course, in other embodiments, the operation power may also represent the operation power of the compressor or the fan in the outdoor unit.
Alternatively, referring to fig. 2, step S2 may include:
and step S21, comparing the outer ring temperature value with a first preset temperature value.
Wherein, the first preset temperature value may be: the outdoor unit normally operates and ensures that the temperature of each electronic component in the outdoor unit is kept stable, and the outdoor unit operates at the outdoor temperature corresponding to the rated power. In this case, it can be considered that the performance of the outdoor unit is fully utilized by the corresponding ambient temperature, wherein the first preset temperature value is at least higher than the external ambient temperature corresponding to the nominal cooling.
Optionally, the first preset temperature value may range from 35 ℃ to 38 ℃, in other words, the first preset temperature value may range from 35 ℃, 36 ℃, 37 ℃ or 38 ℃, and the like.
Step S22, if the outer ring temperature value is less than or equal to the first preset temperature value, the rated power of the outdoor unit is used as the power limit value.
When the temperature of the external ring is less than or equal to the first preset temperature, the temperature of the external environment where the outdoor unit is located is relatively low, and when the outdoor unit operates in the external environment, the outdoor unit is difficult to damage due to overhigh temperature rise of electronic components in the outdoor unit, so that the outdoor unit can be controlled to normally operate, in other words, the outdoor unit can be controlled to operate with the rated power as a power limit value.
Optionally, the outdoor unit temperature control method may further include:
and step S23, if the outer ring temperature value is greater than the first preset temperature value, comparing the outer ring temperature value with a second preset temperature value.
It should be noted that, the second preset temperature value may refer to: under the condition that the air conditioner is in a normal state and the external environment temperature of the outdoor unit reaches a second preset temperature value, the system load of the outdoor unit can reach the highest limit value. It can also be considered as: under the condition that the air conditioner is in a normal state and the external environment temperature of the outdoor unit reaches a second preset temperature value, the high pressure of the operation of the outdoor unit can reach the highest limit value. In addition, in the embodiment of the present application, the second preset temperature value is greater than the first preset temperature value.
Optionally, the value range of the second preset temperature value may be 42 ℃ to 45 ℃; in other words, the second preset temperature value can be 42 ℃, 43 ℃, 44 ℃ or 45 ℃ or the like.
Step S24, if the outer ring temperature value is less than or equal to the second preset temperature value, calculating a power limit value according to the first preset power value, the outer ring temperature value and the first preset temperature value.
When the temperature value of the outer ring is less than or equal to the second preset temperature value, it indicates that the external environment temperature may cause the temperature rise of electronic components of the outdoor unit to cause a fault, and therefore the operation power of the outdoor unit needs to be limited by the power limit value.
Alternatively, the formula for calculating the power limit value according to the first preset power value, the outer ring temperature value and the first preset temperature value may be as follows:
P＝P 1 +a×(T-T 1 )；
wherein P represents a power limit value, P 1 Represents the firstA is a slope coefficient, T is an outer ring temperature value, and T is 1 Representing a first preset temperature value.
It should be noted that, the first preset power value may represent: and a power limit value set for ensuring normal operation of the outdoor unit when the temperature of the external environment is the second preset temperature value. The slope coefficient a represents the change speed of the limited power value in the process of increasing the temperature of the external environment from the first preset temperature value to the second preset temperature value.
Alternatively, the calculation formula of the slope coefficient a may be as follows:
a＝(P m -P 1 )/(T 2 -T 1 )；
wherein, P m Indicating rated power, T 2 Representing a second preset temperature value.
After step S24, the outdoor unit temperature control method may further include:
and step S25, if the outer ring temperature value is greater than the second preset temperature value, comparing the outer ring temperature value with a third preset temperature value.
It should be noted that, the third preset temperature value may represent: the maximum external environment temperature allowed by the outdoor unit to operate may be a temperature corresponding to a system load limit of the outdoor unit. In addition, in the embodiment of the present application, the third preset temperature value is greater than the second preset temperature value.
Optionally, the value range of the third preset temperature value may be 55 ℃ to 60 ℃; in other words, the third predetermined temperature value may be 55 ℃, 56 ℃, 57 ℃, 58 ℃, 59 ℃, or 60 ℃.
Step S26, if the outer ring temperature value is less than or equal to the third preset temperature value, calculating a power limit value according to the second preset power value, the outer ring temperature value and the second preset temperature value.
When the temperature value of the outer ring is less than or equal to the third preset temperature value, the temperature value indicating the external environment where the outdoor unit is located is high, which is likely to cause a failure due to an excessively high temperature rise of electronic components in the outdoor unit, so that the operation power of the outdoor unit needs to be limited by the power limit value, thereby ensuring that the outdoor unit can stably operate.
Optionally, the manner of calculating the power limit value according to the second preset power value, the outer ring temperature value and the second preset temperature value is as follows:
P＝P 2 +b×(T-T 2 )
wherein P represents a power limit value, P 2 Represents a second preset power value, b represents a slope coefficient, T represents an outer ring temperature value, T 2 Representing a second preset temperature value.
The second preset power value represents a power limit value set to ensure normal operation of the outdoor unit when the temperature of the external environment is the third preset temperature value. The slope coefficient b represents the change speed of the limited power value in the process that the temperature of the external environment is increased from the second preset temperature value to the third preset temperature value.
Alternatively, the slope coefficient b is calculated as follows:
b＝(P 1 -P 2 )/(T 3 -T 2 )；
wherein, P 1 Representing a first predetermined power value, P 2 Representing a second predetermined power difference, T 3 Representing a third predetermined temperature value, T 2 Representing a second preset temperature value.
In addition, after step S25, if the outer ring temperature value is greater than the third preset temperature value, it indicates that the temperature of the external environment is too high, and at this time, the outdoor unit stops operating.
Referring to fig. 1, in step S3, the operation power of the outdoor unit is limited according to the power limit value to reduce the heat generation of the outdoor unit.
Therefore, the power limiting value can be obtained through calculation of the temperature of the external environment, the first preset temperature value, the second preset temperature value, the third preset temperature value, the first preset power value, the second preset power value and the rated power, the running power of the outdoor unit is limited, and the problem that faults are caused by overhigh temperature rise of electronic components in the outdoor unit can be solved. In addition, the power limit value can be dynamically adjusted according to the ambient temperature of the external environment in which the outdoor unit is located, in other words, under the condition that the external ambient temperature changes, the power limit value can be dynamically adjusted according to the changed external ambient temperature, so that the performance of the air conditioner can be maximized, and the use effect of the air conditioner can be improved.
Optionally, the outdoor unit temperature control method may further include:
and step S4, receiving the outdoor unit voltage value.
The voltage value of the outdoor unit can be detected by a voltage detection device arranged in the outdoor unit and is sent to the controller; of course, the controller may be provided with a corresponding voltage detection device directly to detect the operating voltage of the outdoor unit.
Step S5, calculating a current limit value according to the outdoor unit voltage value and the power limit value.
The current limiting value is used for limiting the current of the outdoor unit. In other words, when the controller controls the operation of the outdoor unit with the current limit value, the current of the outdoor unit can reach the current limit value at the maximum, so that the problem that the heat generation of the outdoor unit is too high due to too high current can be prevented.
Optionally, referring to fig. 3, in an embodiment of the present application, step S5 may include:
step S51, the outdoor unit voltage is compared with the rated voltage value.
Step S52, if the outdoor unit voltage value is less than or equal to the rated voltage value, the power limit value is divided by the rated voltage value to obtain the current limit value.
In the case where the voltage value is less than or equal to the rated voltage value, there may be a case where the current rises to cause an excessive increase in the temperature of the outdoor unit to cause a malfunction if the voltage decreases. Therefore, the current of the outdoor unit needs to be limited under the condition that the voltage value of the outdoor unit is low, so that the unit faults caused by overhigh temperature of internal elements of the outdoor unit in the prior art are improved, and the use experience of a user is improved.
If the voltage value of the outdoor unit is greater than the rated voltage value, it can be regarded as a voltage rise, and the current of the outdoor unit is decreased on the basis of the power limit value, so that the problem of a fault caused by an excessively high temperature of the outdoor unit can be solved.
Referring to fig. 1, in step S6, the current of the outdoor unit is limited according to the current limit value to reduce the heat generation of the outdoor unit.
In summary, the air conditioner and the outdoor unit temperature control method provided in the embodiment of the present application can limit the operation power of the outdoor unit according to the outdoor temperature value, thereby reducing the heat generated by the outdoor unit and avoiding the influence caused by the overhigh temperature of the outdoor unit. The power limit value can be dynamically adjusted according to the ambient temperature of the external environment where the outdoor unit is located, in other words, under the condition that the external ambient temperature changes, the power limit value can be dynamically adjusted according to the changed external ambient temperature, so that the performance of the air conditioner can be maximized, and the use effect of the air conditioner is improved. In addition, the outdoor unit temperature control method can limit the current of the outdoor unit according to the voltage value of the outdoor unit so as to solve the problem of the increase of the heat generation amount caused by the increase of the current while limiting the operation power of the outdoor unit and avoiding the increase of the heat generation amount caused by the increase of the current caused by the reduction of the voltage. The machine set fault caused by overhigh temperature of the internal elements of the outdoor unit in the prior art can be improved, and therefore the purpose of improving the use experience of users is achieved.
In order to execute possible steps of the outdoor unit temperature control method provided in the foregoing embodiments, please refer to fig. 4, where fig. 4 shows a functional module schematic diagram of an outdoor unit temperature control device provided in the embodiment of the present application. The outdoor unit temperature control device is applied to an air conditioner, and the outdoor unit temperature control device provided by the embodiment of the application is used for executing the outdoor unit temperature control method. It should be noted that the basic principle and the technical effects of the outdoor unit temperature control device provided in the present embodiment are substantially the same as those of the above embodiments, and for the sake of brief description, no part of the present embodiment is mentioned, and corresponding contents in the above embodiments may be referred to.
The outdoor unit temperature control device may include: a receiving module 10, a calculating module 20 and a control module 30.
The receiving module 10 is configured to receive an outer-loop temperature value and a voltage value of an outdoor unit, where the outer-loop temperature value represents a temperature of an external environment where the outdoor unit is located.
Alternatively, the receiving module 10 may perform the steps S1 and S4 in the above-mentioned respective figures to achieve the corresponding technical effects.
The calculating module 20 is configured to calculate a power limit value according to the outer ring temperature value, and further calculate a current limit value according to the outdoor unit voltage value and the power limit value, where the power limit value is used to limit the operating power of the outdoor unit, and the current limit value is used to limit the current of the outdoor unit.
Alternatively, the technical module may perform step S2 and step S5 in the above-described respective figures to achieve the corresponding technical effect.
The control module 30 may be configured to limit the operation power of the outdoor unit according to the power limit value to reduce the heat generation amount of the outdoor unit, and further limit the current of the outdoor unit according to the current limit value to reduce the heat generation amount of the outdoor unit.
Alternatively, the control module 30 may perform steps S3 and S6 in the above-described respective figures to achieve the corresponding technical effects.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An outdoor unit temperature control method, comprising:
receiving an outer ring temperature value, wherein the outer ring temperature value represents the temperature of the external environment where the outdoor unit is located;
calculating a power limit value according to the outer ring temperature value; wherein the power limit value is used for limiting the operation power of the outdoor unit;
limiting the operation power of the outdoor unit according to the power limit value so as to reduce the heat productivity of the outdoor unit;
receiving a voltage value of an outdoor unit;
calculating a current limit value according to the outdoor unit voltage value and the power limit value; wherein the current limit value is used for limiting the current of the outdoor unit;
limiting the current of the outdoor unit according to the current limit value so as to reduce the heat productivity of the outdoor unit;
the method further comprises the following steps:
if the outer ring temperature value is greater than a first preset temperature value, comparing the outer ring temperature value with a second preset temperature value, wherein the second preset temperature value is greater than the first preset temperature value;
if the outer ring temperature value is less than or equal to the second preset temperature value, calculating the power limit value according to a first preset power value, the outer ring temperature value and the first preset temperature value.
2. The outdoor unit temperature control method of claim 1, wherein the step of calculating the power limit value according to the outer loop temperature value comprises:
comparing the outer ring temperature value with a first preset temperature value;
and if the outer ring temperature value is less than or equal to the first preset temperature value, taking the rated power of the outdoor unit as the power limit value.
3. The outdoor unit temperature control method of claim 1, wherein the formula for calculating the power limit value according to the first preset power value, the outer loop temperature value and the first preset temperature value is as follows:
wherein P represents a power limit value, P 1 Represents a first preset power value, a represents a slope coefficient, and T representsRing temperature value, T 1 Representing a first preset temperature value.
4. The outdoor unit temperature control method of claim 3, wherein the slope coefficient a is calculated as follows:
wherein, P m Indicating rated power, T 2 Representing a second preset temperature value.
5. The outdoor unit temperature control method of claim 1, further comprising:
if the outer ring temperature value is greater than the second preset temperature value, comparing the outer ring temperature value with a third preset temperature value, wherein the third preset temperature value is greater than the second preset temperature value;
if the outer ring temperature value is less than or equal to the third preset temperature value, calculating the power limit value according to a second preset power value, the outer ring temperature value and the second preset temperature value.
6. The outdoor unit temperature control method of claim 5, wherein the formula for calculating the power limit value according to the second preset power value, the outer loop temperature value and the second preset temperature value is as follows:
wherein P represents a power limit value, P 2 Represents a second preset power value, b represents a slope coefficient, T represents an outer ring temperature value, T 2 Representing a second preset temperature value.
7. The outdoor unit temperature control method of claim 6, wherein the slope coefficient b is calculated as follows:
wherein, P 1 Representing said first predetermined power value, P 2 Representing said second predetermined power value, T 3 Representing said third predetermined temperature value, T 2 Representing the second preset temperature value.
8. The outdoor unit temperature control method of claim 1, wherein the step of calculating the current limit value according to the outdoor unit voltage value and the power limit value comprises:
comparing the voltage value of the outdoor unit with a rated voltage value;
and if the outdoor unit voltage value is smaller than or equal to the rated voltage value, dividing the power limit value by the rated voltage value to obtain the current limit value.
9. An outdoor unit temperature control device, comprising:
the receiving module is used for receiving an outer ring temperature value and an outdoor unit voltage value, wherein the outer ring temperature value represents the temperature of the external environment where the outdoor unit is located;
the calculation module is used for calculating a power limit value according to the outer ring temperature value and calculating a current limit value according to the outdoor unit voltage value and the power limit value, wherein the power limit value is used for limiting the running power of the outdoor unit, and the current limit value is used for limiting the current of the outdoor unit;
the calculation module is further configured to compare the outer ring temperature value with a second preset temperature value when the outer ring temperature value is greater than a first preset temperature value, where the second preset temperature value is greater than the first preset temperature value; if the outer ring temperature value is less than or equal to the second preset temperature value, calculating the power limit value according to a first preset power value, the outer ring temperature value and the first preset temperature value;
and the control module is used for limiting the running power of the outdoor unit according to the power limiting value so as to reduce the heat productivity of the outdoor unit, and is also used for limiting the current of the outdoor unit according to the current limiting value so as to reduce the heat productivity of the outdoor unit.
10. An air conditioner comprising a controller capable of performing the outdoor unit temperature control method according to any one of claims 1 to 8.
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