WO2022041626A1 - 化霜控制方法、空调器及计算机可读存储介质 - Google Patents

化霜控制方法、空调器及计算机可读存储介质 Download PDF

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Publication number
WO2022041626A1
WO2022041626A1 PCT/CN2020/141922 CN2020141922W WO2022041626A1 WO 2022041626 A1 WO2022041626 A1 WO 2022041626A1 CN 2020141922 W CN2020141922 W CN 2020141922W WO 2022041626 A1 WO2022041626 A1 WO 2022041626A1
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WO
WIPO (PCT)
Prior art keywords
evaporator
temperature
air conditioner
indoor unit
defrosting
Prior art date
Application number
PCT/CN2020/141922
Other languages
English (en)
French (fr)
Inventor
马超
Original Assignee
邯郸美的制冷设备有限公司
广东美的制冷设备有限公司
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Application filed by 邯郸美的制冷设备有限公司, 广东美的制冷设备有限公司 filed Critical 邯郸美的制冷设备有限公司
Publication of WO2022041626A1 publication Critical patent/WO2022041626A1/zh

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Classifications

    • 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
    • F24F11/41—Defrosting; Preventing freezing
    • F24F11/42—Defrosting; Preventing freezing of outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature

Definitions

  • the present application relates to the technical field of air conditioners, and in particular, to a defrost control method, an air conditioner, and a computer-readable storage medium.
  • air conditioners With the improvement of people's living standards, people's demand for air conditioners is no longer limited to the ordinary refrigeration function, but also requires the air conditioner to realize the heating function. In order to improve the user experience, air conditioners usually have a defrosting function.
  • the outdoor unit cannot communicate with the indoor unit, the outdoor unit cannot notify the indoor unit to defrost, thus affecting the heating effect of the air conditioner.
  • the electronic expansion valve of the indoor unit is in In the fully open state, that is, the indoor unit is in an unthrottled state. If the indoor unit is not switched to the throttling state in time during defrosting, the air-conditioning system will return to liquid, resulting in damage to the compressor. Therefore, how to control the air conditioner to defrost when the outdoor unit and the indoor unit are in a state of no communication, and how to prevent the compressor from being damaged when the air conditioner enters the defrost mode, have become urgent problems to be solved at present.
  • the main purpose of the present application is to provide a defrosting control method, an air conditioner and a computer-readable storage medium, which aim to realize defrosting of an air conditioner without communication between indoor and outdoor units, and prevent compressor damage during defrosting.
  • the present application provides a defrosting control method, wherein the defrosting control method comprises the following steps:
  • the air conditioner is controlled to enter the defrosting mode, and the opening degree of the electronic expansion valve in the indoor unit is controlled to be a preset defrosting opening degree.
  • the steps of acquiring the temperature of the first evaporator of the indoor unit in the air conditioner and acquiring the indoor ambient temperature include:
  • the first evaporator coil temperature of the indoor unit in the air conditioner is obtained through the evaporator coil temperature sensor, and the first evaporator coil temperature of the indoor unit is obtained through the evaporator outlet temperature sensor outlet temperature;
  • the temperature of the first evaporator coil is used as the first evaporator temperature of the indoor unit, and obtained through an indoor ambient temperature sensor Indoor ambient temperature;
  • the outlet temperature of the first evaporator is taken as the temperature of the first evaporator of the indoor unit, and the temperature of the first evaporator is passed through the indoor ambient temperature sensor. Get the indoor ambient temperature.
  • the temperature of the first evaporator coil of the indoor unit in the air conditioner is obtained through the evaporator coil temperature sensor, and the temperature of the first evaporator coil of the indoor unit in the air conditioner is obtained through the evaporator outlet temperature sensor.
  • the steps of the first evaporator outlet temperature of the indoor unit include:
  • the multiple evaporator coil temperatures are acquired through multiple evaporator coil temperature sensors, and the multiple evaporator outlet temperatures are acquired through multiple evaporator outlet temperature sensors;
  • the defrosting control method further includes:
  • the air conditioner is controlled to exit the defrost mode, and the opening of the electronic expansion valve is controlled to be a preset fixed opening.
  • the step of acquiring the temperature of the second evaporator of the indoor unit when the air conditioner is defrosting includes:
  • the temperature of the second evaporator coil of the indoor unit is obtained through the evaporator coil temperature sensor, and the outlet temperature of the second evaporator of the indoor unit is obtained through the evaporator outlet temperature sensor;
  • the temperature of the second evaporator coil is lower than the outlet temperature of the second evaporator, the temperature of the second evaporator coil is used as the temperature of the second evaporator of the indoor unit;
  • the outlet temperature of the second evaporator is used as the temperature of the second evaporator of the indoor unit
  • the temperature of the second evaporator coil of the indoor unit is obtained through an evaporator coil temperature sensor, and the indoor unit is obtained through an evaporator outlet temperature sensor.
  • the steps of the second evaporator outlet temperature include:
  • the plurality of evaporator outlet temperatures are averaged, and the obtained average value is used as the second evaporator outlet temperature of the indoor unit.
  • the method before the step of acquiring the temperature of the first evaporator of the indoor unit in the air conditioner and acquiring the indoor ambient temperature when the air conditioner is in the heating operation mode, the method further includes:
  • If the four-way valve control signal is the heating control signal, control the air conditioner to enter the heating operation mode
  • the opening degree of the electronic expansion valve of the indoor unit in the air conditioner is controlled to be a preset fixed opening degree.
  • the present application also provides an air conditioner, the air conditioner includes: a memory, a processor, and a defrost control program stored in the memory and running on the processor, the When the defrost control program is executed by the processor, the steps of the defrost control method as described above are realized.
  • the air conditioner is provided with an evaporator coil temperature sensor and an evaporator outlet temperature sensor connected to the processor, wherein the evaporator coil temperature sensor is arranged indoors in the air conditioner.
  • the evaporator outlet temperature sensor is arranged on the branch outlet of the evaporator.
  • the present application also provides a computer-readable storage medium, where a defrost control program is stored on the computer-readable storage medium, and when the defrost control program is executed by a processor, the above-mentioned defrost control program is implemented The steps of the defrost control method.
  • the present application provides a defrosting control method, an air conditioner and a computer-readable storage medium.
  • the air conditioner is in a heating operation mode, the temperature of the first evaporator of the indoor unit in the air conditioner is obtained, and the indoor ambient temperature is obtained; The ambient temperature and the preset fluctuation value are added, and the obtained value is used as the defrost opening threshold; it is judged whether the temperature of the first evaporator is less than the defrosting opening threshold; if the first evaporator temperature is less than the defrosting opening threshold, then control the air conditioner Enter the defrost mode, and control the opening of the electronic expansion valve in the indoor unit to the preset defrost opening.
  • the air conditioner when the air conditioner is in the heating operation mode, the evaporator temperature of the indoor unit in the air conditioner is compared with the indoor ambient temperature, and then, according to the comparison result, the air conditioner is controlled to defrost, and the outdoor unit does not need to notify the indoor unit to perform defrosting. Therefore, the defrost control can be realized when the outdoor unit and the indoor unit are in a state of no communication.
  • the opening degree of the electronic expansion valve in the indoor unit when the air conditioner enters the defrost mode, the opening degree of the electronic expansion valve in the indoor unit is controlled to be the preset defrost opening degree, and the The indoor unit is switched to throttling to prevent liquid backflow in the air conditioning system, thereby preventing damage to the compressor.
  • FIG. 1 is a schematic structural diagram of a terminal of a hardware operating environment involved in a solution according to an embodiment of the present application
  • Fig. 2 is the schematic flow chart of the first embodiment of the defrosting control method of the application
  • FIG. 3 is a schematic flowchart of a third embodiment of the defrosting control method of the application.
  • FIG. 1 is a schematic structural diagram of a terminal of a hardware operating environment involved in the solution of an embodiment of the present application.
  • the terminal in the embodiment of the present application is an air conditioner
  • the air conditioner may be an air-cooled air conditioner, a variable frequency air conditioner, a water-cooled air conditioner, a fixed frequency air conditioner, a split-type air conditioner, or the like.
  • the terminal may include: a processor 1001 , such as a CPU (Central Processing Unit, central processing unit), a communication bus 1002 , a user interface 1003 , a network interface 1004 , and a memory 1005 .
  • the communication bus 1002 is used to realize the connection and communication between these components.
  • the user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface.
  • the network interface 1004 may include a standard wired interface and a wireless interface (eg, a WI-FI interface).
  • the memory 1005 may be a high-speed RAM memory or a non-volatile memory (non-volatile memory). memory), such as disk storage.
  • the memory 1005 may also be a storage device independent of the aforementioned processor 1001 .
  • terminal structure shown in FIG. 1 does not constitute a limitation on the terminal, and may include more or less components than the one shown, or combine some components, or arrange different components.
  • the memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module and a defrost control program.
  • the processor 1001 can be used to call the defrost control program stored in the memory 1005, and perform the following operations:
  • the air conditioner is controlled to enter the defrosting mode, and the opening degree of the electronic expansion valve in the indoor unit is controlled to be a preset defrosting opening degree.
  • the processor 1001 may be configured to call the defrost control program stored in the memory 1005, and further perform the following operations:
  • the first evaporator coil temperature of the indoor unit in the air conditioner is obtained through the evaporator coil temperature sensor, and the first evaporator coil temperature of the indoor unit is obtained through the evaporator outlet temperature sensor outlet temperature;
  • the temperature of the first evaporator coil is used as the first evaporator temperature of the indoor unit, and obtained through an indoor ambient temperature sensor Indoor ambient temperature;
  • the outlet temperature of the first evaporator is taken as the temperature of the first evaporator of the indoor unit, and the temperature of the first evaporator is passed through the indoor ambient temperature sensor. Get the indoor ambient temperature.
  • the multiple evaporator coil temperatures are acquired through multiple evaporator coil temperature sensors, and the multiple evaporator outlet temperatures are acquired through multiple evaporator outlet temperature sensors;
  • the plurality of evaporator outlet temperatures are averaged, and the obtained average value is used as the first evaporator outlet temperature of the indoor unit.
  • the processor 1001 may be configured to call the defrost control program stored in the memory 1005, and further perform the following operations:
  • the temperature of the second evaporator coil of the indoor unit is obtained through the evaporator coil temperature sensor, and the outlet temperature of the second evaporator of the indoor unit is obtained through the evaporator outlet temperature sensor;
  • the second evaporator outlet temperature is used as the second evaporator temperature of the indoor unit.
  • the processor 1001 may be configured to call the defrost control program stored in the memory 1005, and further perform the following operations:
  • the temperatures of the plurality of evaporator coils are obtained through the plurality of evaporator coil temperature sensors, and the temperatures of the plurality of evaporator outlets are obtained through the plurality of evaporator outlet temperature sensors;
  • the processor 1001 may be configured to call the defrost control program stored in the memory 1005, and further perform the following operations:
  • If the four-way valve control signal is the heating control signal, control the air conditioner to enter the heating operation mode
  • the opening degree of the electronic expansion valve of the indoor unit in the air conditioner is controlled to be a preset fixed opening degree.
  • the present application provides a defrosting control method.
  • FIG. 2 is a schematic flowchart of the first embodiment of the defrosting control method of the present application.
  • the defrosting control method includes:
  • Step S10 when the air conditioner is in the heating operation mode, obtain the temperature of the first evaporator of the indoor unit in the air conditioner, and obtain the indoor ambient temperature;
  • the air conditioner when the air conditioner is in the heating operation mode, the temperature of the first evaporator of the indoor unit in the air conditioner is obtained, and the indoor ambient temperature is obtained.
  • the air conditioner can be provided with an operation detection module, through which the operation mode of the air conditioner can be detected; the air conditioner can also be provided with a temperature detection module, through which the first temperature detection module of the indoor unit in the air conditioner can be obtained respectively. Evaporator temperature and indoor ambient temperature.
  • the operation detection module can determine the operation mode of the air conditioner according to the current state of the four-way valve. For example, when the current state of the four-way valve is turned on, it can be determined that the air conditioner is in the heating operation mode. When the current state of is OFF, it can be determined that the air conditioner is in the cooling operation mode. It can be understood that in this embodiment, the operation detection module can also determine the operation mode of the air conditioner according to other methods, which is not limited to the above method of determining the operation mode of the air conditioner through the current state of the four-way valve, which will not be described in detail here.
  • the air conditioner triggers the operation detection module.
  • the operation detection module detects that the air conditioner is in the heating operation mode
  • the air conditioner starts the temperature detection module, which detects the temperature through the evaporator temperature sensor.
  • the temperature of the first evaporator is obtained, and at the same time, the indoor ambient temperature is obtained by detecting through the indoor ambient temperature sensor.
  • the indoor ambient temperature sensor is usually placed on the indoor heat exchanger. It can be understood that in this embodiment, it can also be placed in other areas, which is not specifically limited here.
  • the evaporator temperature sensor can be arranged on the evaporator coil of the indoor unit, the branch inlet or the branch outlet. The specific execution process is as in the following second embodiment, which is not repeated here.
  • Step S20 performing an addition operation on the indoor ambient temperature and a preset fluctuation value, and using the obtained value as a defrost opening threshold;
  • the defrost opening threshold is a critical value for the air conditioner to enter the defrost mode, which is defined according to the frost point at which the evaporator is frosted.
  • the frost point of the evaporator frosting is related to the indoor ambient temperature, and under different atmospheric pressure environments, the frost point of the evaporator frosting has fluctuation. Therefore, in this embodiment, a preset fluctuation value is preset to meet various environments.
  • the preset fluctuation value can be obtained according to a large number of experiments. Specifically, under different environments and different indoor temperatures, observe the frost formation time of the evaporator, and detect the evaporator temperature at the frost formation time, and then calculate the evaporator temperature. Subtract the indoor ambient temperature and use the obtained value as the preset fluctuation value.
  • the preset fluctuation value is generally 2 degrees Celsius to 10 degrees Celsius.
  • Step S30 judging whether the temperature of the first evaporator is less than the threshold for opening the defrost
  • Step S40 if the temperature of the first evaporator is lower than the defrosting opening threshold, control the air conditioner to enter the defrosting mode, and control the opening degree of the electronic expansion valve in the indoor unit to be a preset defrosting opening degree .
  • the air conditioner is controlled to enter the defrost mode, and the opening of the electronic expansion valve in the indoor unit is controlled. is the default defrost opening.
  • the preset defrost opening degree is confirmed according to parameters such as evaporator temperature, compressor running time, etc. In this embodiment, the preset defrost opening degree is 150 steps to 350 steps.
  • the compressor opening will cause a large pressure difference in the air conditioner system, which may cause the refrigerant in the air conditioner system to return to liquid, resulting in damage to the compressor.
  • the outdoor fan is turned off, the wind speed decreases, resulting in a large pressure difference in the system, which may also cause the refrigerant in the air-conditioning system to return to liquid, resulting in damage to the compressor.
  • the opening of the electronic expansion valve is reduced, that is, the indoor unit of the air conditioner is controlled to enter the throttle state, so as to reduce the system pressure difference, thereby preventing the refrigerant in the system from returning to liquid, and ensuring the normal operation of the compressor.
  • the embodiment of the present application provides a defrosting control method.
  • the air conditioner is in the heating operation mode, the temperature of the first evaporator of the indoor unit in the air conditioner is obtained, and the indoor ambient temperature is obtained; Perform an addition operation, and use the obtained value as the defrost opening threshold; determine whether the temperature of the first evaporator is less than the defrosting opening threshold; if the first evaporator temperature is less than the defrosting opening threshold, then control the air conditioner to enter the defrost mode, and control
  • the opening of the electronic expansion valve in the indoor unit is the preset defrosting opening.
  • the air conditioner when the air conditioner is in the heating operation mode, the evaporator temperature of the indoor unit in the air conditioner is compared with the indoor ambient temperature, and then, according to the comparison result, the air conditioner is controlled to defrost without the outdoor unit notifying the indoor unit. Defrosting is performed, so that the defrosting control can be realized when the outdoor unit and the indoor unit are in a state of no communication.
  • the opening degree of the electronic expansion valve in the indoor unit is controlled to be the preset defrosting opening degree. , switch the indoor unit to throttling state to prevent liquid backflow in the air conditioning system, thereby preventing damage to the compressor.
  • step S10 includes:
  • Step a11 when the air conditioner is in the heating operation mode, obtain the temperature of the first evaporator coil of the indoor unit in the air conditioner through the evaporator coil temperature sensor, and obtain the temperature of the indoor unit through the evaporator outlet temperature sensor. the outlet temperature of the first evaporator;
  • the temperature of the first evaporator coil of the indoor unit in the air conditioner is obtained through the evaporator coil temperature sensor, and the first evaporator coil temperature of the indoor unit is obtained through the evaporator outlet temperature sensor.
  • an evaporator outlet temperature is obtained.
  • the temperature of the first evaporator coil is the temperature on the evaporator coil of the indoor unit of the air conditioner;
  • the outlet temperature of the first evaporator is the temperature on the outlet of the branch circuit of the evaporator of the indoor unit of the air conditioner.
  • the evaporator coil temperature sensor is arranged on the evaporator coil of the indoor unit of the air conditioner, and the evaporator outlet temperature sensor is arranged on the outlet of the branch circuit of the evaporator of the indoor unit of the air conditioner.
  • the evaporator coil temperature sensor may include one or more, and the evaporator outlet temperature sensor may include one or more, which is not specifically limited here.
  • step a11 includes:
  • Step a111 when the air conditioner is in the heating operation mode, obtain multiple evaporator coil temperatures through multiple evaporator coil temperature sensors, and obtain multiple evaporator outlet temperatures through multiple evaporator outlet temperature sensors;
  • a plurality of evaporator coil temperatures are obtained through a plurality of evaporator coil temperature sensors, and a plurality of evaporator outlet temperatures are obtained through a plurality of evaporator outlet temperature sensors . It can be understood that the more evaporator coil temperature sensors are detected, the more accurate the obtained evaporator coil temperature is, and the more evaporator outlet temperatures are detected, the more accurate the obtained evaporator outlet temperature.
  • the temperature of the plurality of evaporator coils is averaged, and the obtained average value is used as the temperature of the first evaporator coil of the indoor unit in the air conditioner.
  • the temperature of multiple evaporator coils is usually not much different. Therefore, the temperature of the evaporator coils obtained by averaging the temperatures of the multiple evaporator coils is more accurate. Of course, it can also be obtained by mathematical methods such as median and mode.
  • a plurality of evaporator outlet temperatures are averaged, and the obtained average value is used as the first evaporator outlet temperature of the indoor unit.
  • the outlet temperatures of multiple evaporators are usually not much different. Therefore, by performing an average operation on the outlet temperatures of multiple evaporators, the obtained outlet temperatures of the evaporators are more accurate. Of course, it can also be obtained by mathematical methods such as median and mode.
  • Step a12 judging whether the temperature of the first evaporator coil is greater than the outlet temperature of the first evaporator
  • Step a13 if the temperature of the first evaporator coil is greater than the outlet temperature of the first evaporator, the temperature of the first evaporator coil is used as the first evaporator temperature of the indoor unit, and the temperature is passed through the indoor environment.
  • the temperature sensor obtains the indoor ambient temperature
  • the temperature of the first evaporator coil is greater than the outlet temperature of the first evaporator, the temperature of the first evaporator coil is directly used as the temperature of the first evaporator, and the subsequent judgment process is to judge whether the temperature of the first evaporator is lower than
  • the frost opening threshold is set, it is equivalent to judging whether the first evaporator coil temperature and the first evaporator outlet temperature are both lower than the defrosting opening threshold.
  • Step a14 if the temperature of the first evaporator coil is less than or equal to the outlet temperature of the first evaporator, the outlet temperature of the first evaporator is taken as the temperature of the first evaporator of the indoor unit, and the temperature is passed through the indoor unit.
  • the ambient temperature sensor acquires the indoor ambient temperature.
  • the outlet temperature of the first evaporator is taken as The temperature of the first evaporator of the indoor unit is obtained, and the indoor ambient temperature is obtained through the indoor ambient temperature sensor.
  • the indoor ambient temperature sensor is arranged in the indoor unit of the air conditioner.
  • the first evaporator outlet temperature is directly used as the first evaporator temperature, and the subsequent judgment process is to determine whether the first evaporator temperature is lower than or not.
  • the defrosting opening threshold it is equivalent to judging whether the temperature of the first evaporator coil and the outlet temperature of the first evaporator are both lower than the defrosting opening threshold.
  • the defrosting control method of the present application further includes:
  • Step S50 acquiring the temperature of the second evaporator of the indoor unit when the air conditioner is defrosting
  • the temperature of the second evaporator of the indoor unit is acquired.
  • the air conditioner activates the temperature detection module, and the temperature detection module detects through the evaporator temperature sensor to obtain the second evaporator temperature.
  • the evaporator temperature sensor can be arranged on the evaporator coil of the indoor unit, the branch inlet or the branch outlet.
  • the second evaporator temperature is used to determine whether the air conditioner exits the defrost mode, which is different from the first evaporator temperature, which is used to determine whether the air conditioner enters the defrost mode.
  • step S50 includes:
  • Step a51 when the air conditioner is defrosting, obtain the temperature of the second evaporator coil of the indoor unit through the evaporator coil temperature sensor, and obtain the second evaporator of the indoor unit through the evaporator outlet temperature sensor output temperature;
  • the temperature of the second evaporator coil of the indoor unit is obtained through the evaporator coil temperature sensor, and the outlet temperature of the second evaporator of the indoor unit is obtained through the evaporator outlet temperature sensor.
  • the temperature of the second evaporator coil is the temperature on the evaporator coil of the indoor unit of the air conditioner; the outlet temperature of the second evaporator is the temperature on the outlet of the branch circuit of the evaporator of the indoor unit of the air conditioner.
  • the evaporator coil temperature sensor is arranged on the evaporator coil of the indoor unit of the air conditioner, and the evaporator outlet temperature sensor is arranged on the outlet of the branch circuit of the evaporator of the indoor unit of the air conditioner.
  • the evaporator coil temperature sensor may include one or more, and the evaporator outlet temperature sensor may include one or more, which is not specifically limited here.
  • step a51 includes:
  • Step a511 when the air conditioner is defrosting, obtain a plurality of evaporator coil temperatures through a plurality of evaporator coil temperature sensors, and obtain a plurality of evaporator outlet temperatures through a plurality of evaporator outlet temperature sensors;
  • multiple evaporator coil temperatures are obtained through multiple evaporator coil temperature sensors, and multiple evaporator outlet temperatures are obtained through multiple evaporator outlet temperature sensors. It can be understood that the more evaporator coil temperature sensors are detected, the more accurate the obtained evaporator coil temperature is, and the more evaporator outlet temperatures are detected, the more accurate the obtained evaporator outlet temperature.
  • Step a512 perform an average calculation on the temperatures of the plurality of evaporator coils, and use the obtained average value as the temperature of the second evaporator coil of the indoor unit in the air conditioner;
  • the temperature of the plurality of evaporator coils is averaged, and the obtained average value is used as the temperature of the second evaporator coil of the indoor unit in the air conditioner.
  • the temperature of the multiple evaporator coils is usually not much different. Therefore, the temperature of the evaporator coils obtained by averaging the temperatures of the multiple evaporator coils is more accurate. Of course, it can also be obtained by mathematical methods such as median and mode.
  • Step a513 Perform an average calculation on the outlet temperatures of the plurality of evaporators, and use the obtained average value as the outlet temperature of the second evaporator of the indoor unit.
  • a plurality of evaporator outlet temperatures are averaged, and the obtained average value is used as the second evaporator outlet temperature of the indoor unit.
  • the outlet temperatures of multiple evaporators are usually not much different. Therefore, by performing an average operation on the outlet temperatures of multiple evaporators, the obtained outlet temperatures of the evaporators are more accurate. Of course, it can also be obtained by mathematical methods such as median and mode.
  • Step a52 judging whether the temperature of the second evaporator coil is lower than the outlet temperature of the second evaporator
  • Step a53 if the temperature of the second evaporator coil is lower than the outlet temperature of the second evaporator, the temperature of the second evaporator coil is used as the temperature of the second evaporator of the indoor unit;
  • the temperature of the second evaporator coil is lower than the outlet temperature of the second evaporator. If the temperature of the second evaporator coil is lower than the outlet temperature of the second evaporator, the temperature of the second evaporator coil is used as the indoor temperature. The temperature of the second evaporator of the machine.
  • the temperature of the second evaporator coil is lower than the outlet temperature of the second evaporator, the temperature of the second evaporator coil is directly used as the temperature of the second evaporator. In the subsequent judgment process, it is determined whether the temperature of the second evaporator is not. Being greater than or equal to the preset defrost exit threshold is equivalent to judging whether the temperature of the second evaporator coil and the outlet temperature of the second evaporator are both greater than or equal to the defrost opening threshold.
  • Step a54 if the temperature of the second evaporator coil is greater than or equal to the outlet temperature of the second evaporator, the outlet temperature of the second evaporator is used as the temperature of the second evaporator of the indoor unit.
  • the temperature of the second evaporator coil is greater than or equal to the outlet temperature of the second evaporator, the outlet temperature of the second evaporator is directly used as the temperature of the second evaporator, and in the subsequent judgment process, the temperature of the second evaporator is judged. Whether it is greater than or equal to the preset defrost exit threshold is equivalent to judging whether the second evaporator coil temperature and the second evaporator outlet temperature are greater than or equal to the defrost opening threshold at the same time.
  • Step S60 judging whether the temperature of the second evaporator is greater than or equal to a preset defrost exit threshold
  • the opening of the electronic expansion valve is a preset fixed opening.
  • the preset fixed opening is set according to the actual situation, such as 480 steps, 470 steps, 460 steps, etc., which are not specifically limited here. It can be understood that the preset fixed opening degree is the maximum opening degree of the electronic expansion valve or is close to the maximum opening degree of the electronic expansion valve.
  • the frost on the evaporator of the indoor unit is melted, the temperature of the evaporator is detected, and the temperature of the evaporator is a preset defrost exit threshold.
  • the preset defrost exit threshold has different values in different environments, and generally the preset defrost exit threshold is 25 degrees Celsius to 40 degrees Celsius.
  • the specific methods of exiting the defrost mode include closing the compressor, opening the four-way valve (heating operation mode), and opening the outdoor fan.
  • the indoor fan can be turned on. It can be understood that during the defrosting process of the air conditioner, if a fault occurs, a shutdown occurs or a mode is switched, the air conditioner is immediately controlled to exit the defrosting mode.
  • the defrosting control method of the present application further includes:
  • Step S80 when receiving the four-way valve control signal, determine whether the four-way valve control signal is a heating control signal
  • the four-way valve control signal can control the opening or closing of the four-way valve.
  • the four-way valve control signal controls the four-way valve to open, the four-way valve control signal is the heating control signal; when the four-way valve control signal controls the four-way valve
  • the four-way valve control signal is the refrigeration control signal.
  • Step S90 if the four-way valve control signal is the heating control signal, control the air conditioner to enter the heating operation mode;
  • Step S100 when the air conditioner is in the heating operation mode, control the opening degree of the electronic expansion valve of the indoor unit in the air conditioner to be a preset fixed opening degree.
  • the air conditioner before the air conditioner is controlled to enter the defrosting mode, the air conditioner is first controlled to enter the heating operation mode, and the opening degree of the electronic expansion valve of the indoor unit is controlled to be a preset fixed opening degree, so as to ensure that the outdoor unit of the air conditioner is a constant flow state, the indoor unit is in the unthrottled state.
  • the air conditioner is provided with an evaporator coil temperature sensor and an evaporator outlet temperature sensor connected to the processor, wherein the evaporator coil temperature sensor is arranged in the evaporation of the indoor unit in the air conditioner.
  • the evaporator outlet temperature sensor is arranged on the branch outlet of the evaporator.
  • the present application further provides a computer-readable storage medium, where a defrost control program is stored on the computer-readable storage medium, and when the defrost control program is executed by a processor, the defrost described in any of the above embodiments can be realized The steps of the control method.

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Abstract

一种化霜控制方法、空调器及计算机可读存储介质，所述化霜控制方法包括：在空调器处于制热运行模式时，获取所述空调器中室内机的第一蒸发器温度，并获取室内环境温度；将所述室内环境温度与预设波动值进行加法运算，将得到的值作为化霜开启阈值；判断所述第一蒸发器温度是否小于所述化霜开启阈值；若所述第一蒸发器温度小于所述化霜开启阈值，则控制所述空调器进入化霜模式，并控制所述室内机中电子膨胀阀的开度为预设化霜开度。

Description

化霜控制方法、空调器及计算机可读存储介质
本申请要求2020年8月28日申请的，申请号为202010892589.6，名称为“化霜控制方法、空调器及计算机可读存储介质”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及空调器技术领域，尤其涉及一种化霜控制方法、空调器及计算机可读存储介质。
 背景技术
随着人们生活水平的提高，人们对空调器的需求不再局限于普通的制冷功能，还要求空调器实现制热功能。为提升用户的使用体验，空调器通常具备化霜功能。
然而，在室外机与室内机无法进行通讯时，室外机无法通知室内机进行化霜，从而影响空调器的制热效果，同时，空调器处于制热运行模式时，室内机的电子膨胀阀处于全开状态，即室内机处于无节流状态，如果室内机在化霜时未及时切换至节流状态，空调系统将会回液，导致压缩机损坏。因此，在室外机与室内机处于无通讯状态下，如何控制空调器进行化霜，以及空调器进入化霜模式时如何防止压缩机损坏，成为了目前亟需解决的问题。
 技术问题
本申请的主要目的在于提供一种化霜控制方法、空调器及计算机可读存储介质，旨在实现室内外机无通讯的空调器进行化霜，并防止化霜时压缩机损坏。
 技术解决方案
为实现上述目的，本申请提供一种化霜控制方法，其中，所述化霜控制方法包括以下步骤：
在空调器处于制热运行模式时，获取所述空调器中室内机的第一蒸发器温度，并获取室内环境温度；
将所述室内环境温度与预设波动值进行加法运算，将得到的值作为化霜开启阈值；
判断所述第一蒸发器温度是否小于所述化霜开启阈值；
若所述第一蒸发器温度小于所述化霜开启阈值，则控制所述空调器进入化霜模式，并控制所述室内机中电子膨胀阀的开度为预设化霜开度。
在一实施例中，所述在空调器处于制热运行模式时，获取所述空调器中室内机的第一蒸发器温度，并获取室内环境温度的步骤包括：
在空调器处于制热运行模式时，通过蒸发器盘管温度传感器获取所述空调器中室内机的第一蒸发器盘管温度，并通过蒸发器出口温度传感器获取所述室内机的第一蒸发器出口温度；
判断所述第一蒸发器盘管温度是否大于所述第一蒸发器出口温度；
若所述第一蒸发器盘管温度大于所述第一蒸发器出口温度，则将所述第一蒸发器盘管温度作为所述室内机的第一蒸发器温度，并通过室内环境温度传感器获取室内环境温度；
若所述第一蒸发器盘管温度小于或等于所述第一蒸发器出口温度，则将所述第一蒸发器出口温度作为所述室内机的第一蒸发器温度，并通过室内环境温度传感器获取室内环境温度。
在一实施例中，所述在空调器处于制热运行模式时，通过蒸发器盘管温度传感器获取所述空调器中室内机的第一蒸发器盘管温度，并通过蒸发器出口温度传感器获取所述室内机的第一蒸发器出口温度的步骤包括：
在空调器处于制热运行模式时，通过多个蒸发器盘管温度传感器获取多个蒸发器盘管温度，并通过多个蒸发器出口温度传感器获取多个蒸发器出口温度；
将所述多个蒸发器盘管温度进行平均运算，将得到的平均值作为所述空调器中室内机的第一蒸发器盘管温度；
将所述多个蒸发器出口温度进行平均运算，将得到的平均值作为所述室内机的第一蒸发器出口温度。
在一实施例中，所述化霜控制方法还包括：
在所述空调器化霜时，获取所述室内机的第二蒸发器温度；
判断所述第二蒸发器温度是否大于或等于预设化霜退出阈值；
若所述第二蒸发器温度大于或等于所述预设化霜退出阈值，则控制所述空调器退出化霜模式，并控制所述电子膨胀阀的开度为预设固定开度。
在一实施例中，所述在所述空调器化霜时，获取所述室内机的第二蒸发器温度的步骤包括：
在所述空调器化霜时，通过蒸发器盘管温度传感器获取所述室内机的第二蒸发器盘管温度，并通过蒸发器出口温度传感器获取所述室内机的第二蒸发器出口温度；
判断所述第二蒸发器盘管温度是否小于所述第二蒸发器出口温度；
若所述第二蒸发器盘管温度小于所述第二蒸发器出口温度，则将所述第二蒸发器盘管温度作为所述室内机的第二蒸发器温度；
若所述第二蒸发器盘管温度大于或等于所述第二蒸发器出口温度，则将所述第二蒸发器出口温度作为所述室内机的第二蒸发器温度
在一实施例中，所述在所述空调器化霜时，通过蒸发器盘管温度传感器获取所述室内机的第二蒸发器盘管温度，并通过蒸发器出口温度传感器获取所述室内机的第二蒸发器出口温度的步骤包括：
在所述空调器化霜时，通过多个蒸发器盘管温度传感器获取多个蒸发器盘管温度，并通过多个蒸发器出口温度传感器获取多个蒸发器出口温度；
将所述多个蒸发器盘管温度进行平均运算，将得到的平均值作为所述空调器中室内机的第二蒸发器盘管温度；
将所述多个蒸发器出口温度进行平均运算，将得到的平均值作为所述室内机的第二蒸发器出口温度。
在一实施例中，所述在空调器处于制热运行模式时，获取所述空调器中室内机的第一蒸发器温度，并获取室内环境温度的步骤之前，还包括：
当接收到四通阀控制信号时，判断所述四通阀控制信号是否为制热控制信号；
若所述四通阀控制信号为所述制热控制信号，则控制空调器进入制热运行模式；
在所述空调器处于制热运行模式时，控制所述空调器中室内机的电子膨胀阀的开度为预设固定开度。
此外，为实现上述目的，本申请还提供一种空调器，所述空调器包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的化霜控制程序，所述化霜控制程序被所述处理器执行时实现如上所述的化霜控制方法的步骤。
在一实施例中，所述空调器设有与所述处理器连接的蒸发器盘管温度传感器及蒸发器出口温度传感器，其中，所述蒸发器盘管温度传感器设置于所述空调器中室内机的蒸发器的盘管上，所述蒸发器出口温度传感器设置于所述蒸发器的支路出口上。
此外，为实现上述目的，本申请还提供一种计算机可读存储介质，所述计算机可读存储介质上存储有化霜控制程序，所述化霜控制程序被处理器执行时实现如上所述的化霜控制方法的步骤。
 有益效果
本申请提供一种化霜控制方法、空调器及计算机可读存储介质，在空调器处于制热运行模式时，获取空调器中室内机的第一蒸发器温度，并获取室内环境温度；将室内环境温度与预设波动值进行加法运算，将得到的值作为化霜开启阈值；判断第一蒸发器温度是否小于化霜开启阈值；若第一蒸发器温度小于化霜开启阈值，则控制空调器进入化霜模式，并控制室内机中电子膨胀阀的开度为预设化霜开度。本申请在空调器处于制热运行模式时，将空调器中室内机的蒸发器温度与室内环境温度进行对比，然后，根据对比结果，控制空调器进行化霜，无需室外机通知室内机进行化霜，从而可实现室外机与室内机处于无通讯状态下的化霜控制，最后，在空调器进入化霜模式时，控制室内机中电子膨胀阀的开度为预设化霜开度，将室内机切换至节流状态，以防止空调系统回液，从而防止压缩机损坏。
 附图说明
图1为本申请实施例方案涉及的硬件运行环境的终端结构示意图；
图2为本申请化霜控制方法第一实施例的流程示意图；
图3为本申请化霜控制方法第三实施例的流程示意图；
图4为本申请化霜控制方法第四实施例的流程示意图。
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
 本发明的实施方式
应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
参照图1，图1为本申请实施例方案涉及的硬件运行环境的终端结构示意图。
本申请实施例终端为空调器，该空调器可以为风冷空调器、变频空调器、水冷空调器、定频空调器、分体式空调器等。
如图1所示，该终端可以包括：处理器1001，例如CPU（Central Processing Unit，中央处理器），通信总线1002，用户接口1003，网络接口1004，存储器1005。其中，通信总线1002用于实现这些组件之间的连接通信。用户接口1003可以包括显示屏（Display）、输入单元比如键盘（Keyboard），可选用户接口1003还可以包括标准的有线接口、无线接口。网络接口1004可选的可以包括标准的有线接口、无线接口（如WI-FI接口）。存储器1005可以是高速RAM存储器，也可以是稳定的存储器（non-volatile memory），例如磁盘存储器。存储器1005可选的还可以是独立于前述处理器1001的存储装置。
本领域技术人员可以理解，图1中示出的终端结构并不构成对终端的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
如图1所示，作为一种计算机存储介质的存储器1005中可以包括操作系统、网络通信模块、用户接口模块以及化霜控制程序。
在图1所示的终端中，处理器1001可以用于调用存储器1005中存储的化霜控制程序，并执行以下操作：
在空调器处于制热运行模式时，获取所述空调器中室内机的第一蒸发器温度，并获取室内环境温度；
将所述室内环境温度与预设波动值进行加法运算，将得到的值作为化霜开启阈值；
判断所述第一蒸发器温度是否小于所述化霜开启阈值；
若所述第一蒸发器温度小于所述化霜开启阈值，则控制所述空调器进入化霜模式，并控制所述室内机中电子膨胀阀的开度为预设化霜开度。
在一实施例中，处理器1001可以用于调用存储器1005中存储的化霜控制程序，还执行以下操作：
在空调器处于制热运行模式时，通过蒸发器盘管温度传感器获取所述空调器中室内机的第一蒸发器盘管温度，并通过蒸发器出口温度传感器获取所述室内机的第一蒸发器出口温度；
判断所述第一蒸发器盘管温度是否大于所述第一蒸发器出口温度；
若所述第一蒸发器盘管温度大于所述第一蒸发器出口温度，则将所述第一蒸发器盘管温度作为所述室内机的第一蒸发器温度，并通过室内环境温度传感器获取室内环境温度；
若所述第一蒸发器盘管温度小于或等于所述第一蒸发器出口温度，则将所述第一蒸发器出口温度作为所述室内机的第一蒸发器温度，并通过室内环境温度传感器获取室内环境温度。
在一实施例中，处理器1001可以用于调用存储器1005中存储的化霜控制程序，还执行以下操作：
在空调器处于制热运行模式时，通过多个蒸发器盘管温度传感器获取多个蒸发器盘管温度，并通过多个蒸发器出口温度传感器获取多个蒸发器出口温度；
将所述多个蒸发器盘管温度进行平均运算，将得到的平均值作为所述空调器中室内机的第一蒸发器盘管温度；
将所述多个蒸发器出口温度进行平均运算，将得到的平均值作为所述室内机的第一蒸发器出口温度。
在一实施例中，处理器1001可以用于调用存储器1005中存储的化霜控制程序，还执行以下操作：
在所述空调器化霜时，获取所述室内机的第二蒸发器温度；
判断所述第二蒸发器温度是否大于或等于预设化霜退出阈值；
若所述第二蒸发器温度大于或等于所述预设化霜退出阈值，则控制所述空调器退出化霜模式，并控制所述电子膨胀阀的开度为预设固定开度。
在一实施例中，处理器1001可以用于调用存储器1005中存储的化霜控制程序，还执行以下操作：
在所述空调器化霜时，通过蒸发器盘管温度传感器获取所述室内机的第二蒸发器盘管温度，并通过蒸发器出口温度传感器获取所述室内机的第二蒸发器出口温度；
判断所述第二蒸发器盘管温度是否小于所述第二蒸发器出口温度；
若所述第二蒸发器盘管温度小于所述第二蒸发器出口温度，则将所述第二蒸发器盘管温度作为所述室内机的第二蒸发器温度；
若所述第二蒸发器盘管温度大于或等于所述第二蒸发器出口温度，则将所述第二蒸发器出口温度作为所述室内机的第二蒸发器温度。
在一实施例中，处理器1001可以用于调用存储器1005中存储的化霜控制程序，还执行以下操作：
在所述空调器化霜时，通过多个蒸发器盘管温度传感器获取多个蒸发器盘管温度，并通过多个蒸发器出口温度传感器获取多个蒸发器出口温度；
将所述多个蒸发器盘管温度进行平均运算，将得到的平均值作为所述空调器中室内机的第二蒸发器盘管温度；
将所述多个蒸发器出口温度进行平均运算，将得到的平均值作为所述室内机的第二蒸发器出口温度。
在一实施例中，处理器1001可以用于调用存储器1005中存储的化霜控制程序，还执行以下操作：
当接收到四通阀控制信号时，判断所述四通阀控制信号是否为制热控制信号；
若所述四通阀控制信号为所述制热控制信号，则控制空调器进入制热运行模式；
在所述空调器处于制热运行模式时，控制所述空调器中室内机的电子膨胀阀的开度为预设固定开度。
基于上述硬件结构，提出本申请化霜控制方法各个实施例。
本申请提供一种化霜控制方法。
参照图2，图2为本申请化霜控制方法第一实施例的流程示意图。
在本实施例中，该化霜控制方法包括：
步骤S10，在空调器处于制热运行模式时，获取所述空调器中室内机的第一蒸发器温度，并获取室内环境温度；
在本实施例中，在空调器处于制热运行模式时，获取空调器中室内机的第一蒸发器温度，并获取室内环境温度。其中，空调器可设置运行检测模块，通过该运行检测模块，可检测空调器的运行模式；空调器还可设置温度检测模块，通过该温度检测模块，可分别获取空调器中室内机的第一蒸发器温度及室内环境温度。
需要说明的是，运行检测模块可根据四通阀的当前状态确定空调器的运行模式，例如，当四通阀的当前状态为开启时，可确定空调器处于制热运行模式，当四通阀的当前状态为关闭时，可确定空调器处于制冷运行模式。可以理解，在本实施例中，运行检测模块还可根据其他方式确定空调器运行模式，并不限于上述通过四通阀的当前状态确定空调器运行模式的方式，此处不作具体赘述。
具体的，当空调器启动时，空调器触发运行检测模块，当该运行检测模块检测到空调器处于制热运行模式时，空调器启动温度检测模块，该温度检测模块通过蒸发器温度传感器进行检测，得到第一蒸发器温度，同时，通过室内环境温度传感器进行检测，得到室内环境温度。需要说明的是，室内环境温度传感器通常放置在室内换热器上，可以理解，在本实施例中，还可放置在其他区域，此处不作具体限定。而蒸发器温度传感器可设置于室内机的蒸发器盘管上、支路入口或支路出口。具体的执行过程如下述第二实施例，此处不作赘述。
步骤S20，将所述室内环境温度与预设波动值进行加法运算，将得到的值作为化霜开启阈值；
在获取到室内环境温度后，将室内环境温度与预设波动值进行加法运算，将得到的值作为化霜开启阈值。可以理解，化霜开启阈值为空调器进入化霜模式的临界值，其根据蒸发器结霜的霜点进行定义。
需要说明的是，蒸发器结霜的霜点与室内环境温度有关，并且在不同大气压环境下，蒸发器结霜的霜点具有波动性，因此，本实施例预先设定预设波动值，以满足各种环境。
其中，预设波动值可根据大量的实验获得，具体的，在不同环境下、不同室内温度下，观察蒸发器的结霜时刻，并检测结霜时刻的蒸发器温度，然后，将蒸发器温度与室内环境温度进行减法运算，将得到的值作为预设波动值。在本实施例中，预设波动值通常为2摄氏度至10摄氏度。
步骤S30，判断所述第一蒸发器温度是否小于所述化霜开启阈值；
步骤S40，若所述第一蒸发器温度小于所述化霜开启阈值，则控制所述空调器进入化霜模式，并控制所述室内机中电子膨胀阀的开度为预设化霜开度。
在本实施例中，判断第一蒸发器温度是否小于化霜开启阈值，若第一蒸发器温度小于化霜开启阈值，则控制空调器进入化霜模式，并控制室内机中电子膨胀阀的开度为预设化霜开度。其中，预设化霜开度根据蒸发器温度、压缩机运行时长等参数进行确认，在本实施例中，预设化霜开度为150步至350步。
需要说明的是，化霜的具体方式包括压缩机开、四通阀关（制冷运行模式）、室外风机关等方式，可以理解，在化霜时，为防止室内机吹出冷风，影响用户的使用体验，可将室内风机关闭。
此外，还需要说明的是，空调器进入化霜模式时，压缩机开将会导致空调器系统压差大，可能导致空调系统中的冷媒回液，导致压缩机损坏。同时，室外风机关，风速降低，导致系统压差大，也可能导致空调系统中的冷媒回液，导致压缩机损坏。因此，本实施例将电子膨胀阀的开度降低，即控制空调器室内机进入节流状态，以降低系统压差，从而防止系统中的冷媒回液，保证压缩机正常运行。
本申请实施例提供一种化霜控制方法，在空调器处于制热运行模式时，获取空调器中室内机的第一蒸发器温度，并获取室内环境温度；将室内环境温度与预设波动值进行加法运算，将得到的值作为化霜开启阈值；判断第一蒸发器温度是否小于化霜开启阈值；若第一蒸发器温度小于化霜开启阈值，则控制空调器进入化霜模式，并控制室内机中电子膨胀阀的开度为预设化霜开度。本申请实施例在空调器处于制热运行模式时，将空调器中室内机的蒸发器温度与室内环境温度进行对比，然后，根据对比结果，控制空调器进行化霜，无需室外机通知室内机进行化霜，从而可实现室外机与室内机处于无通讯状态下的化霜控制，最后，在空调器进入化霜模式时，控制室内机中电子膨胀阀的开度为预设化霜开度，将室内机切换至节流状态，以防止空调系统回液，从而防止压缩机损坏。
进一步地，基于上述第一实施例，提出本申请化霜控制方法的第二实施例。
在本实施例中，上述步骤S10包括：
步骤a11，在空调器处于制热运行模式时，通过蒸发器盘管温度传感器获取所述空调器中室内机的第一蒸发器盘管温度，并通过蒸发器出口温度传感器获取所述室内机的第一蒸发器出口温度；
在本实施例中，在空调器处于制热运行模式时，通过蒸发器盘管温度传感器获取空调器中室内机的第一蒸发器盘管温度，并通过蒸发器出口温度传感器获取室内机的第一蒸发器出口温度。其中，第一蒸发器盘管温度为空调器室内机蒸发器盘管上的温度；第一蒸发器出口温度为空调器室内机蒸发器支路出口上的温度。
需要说明的是，蒸发器盘管温度传感器设置于空调器室内机蒸发器盘管上，蒸发器出口温度传感器设置于空调器室内机蒸发器支路出口上。当然，蒸发器盘管温度传感器可包括一个或多个，蒸发器出口温度传感器可包括一个或多个，此处不作具体限定。
具体的，步骤a11包括：
步骤a111，在空调器处于制热运行模式时，通过多个蒸发器盘管温度传感器获取多个蒸发器盘管温度，并通过多个蒸发器出口温度传感器获取多个蒸发器出口温度；
在本实施例中，在空调器处于制热运行模式时，通过多个蒸发器盘管温度传感器获取多个蒸发器盘管温度，并通过多个蒸发器出口温度传感器获取多个蒸发器出口温度。可以理解，检测越多的蒸发器盘管温度传感器，得到的蒸发器盘管温度更加准确，检测越多的蒸发器出口温度，得到的蒸发器出口温度更加准确。
步骤a112，将所述多个蒸发器盘管温度进行平均运算，将得到的平均值作为所述空调器中室内机的第一蒸发器盘管温度；
然后，将多个蒸发器盘管温度进行平均运算，将得到的平均值作为空调器中室内机的第一蒸发器盘管温度。可以理解，多个蒸发器盘管温度通常相差不大，因此，将多个蒸发器盘管温度进行平均运算，得到的蒸发器盘管温度更加准确。当然，也可以通过中位数、众数等数学方法得到。
步骤a113，将所述多个蒸发器出口温度进行平均运算，将得到的平均值作为所述室内机的第一蒸发器出口温度。
然后，将多个蒸发器出口温度进行平均运算，将得到的平均值作为室内机的第一蒸发器出口温度。可以理解，多个蒸发器出口温度通常相差不大，因此，将多个蒸发器出口温度进行平均运算，得到的蒸发器出口温度更加准确。当然，也可以通过中位数、众数等数学方法得到。
步骤a12，判断所述第一蒸发器盘管温度是否大于所述第一蒸发器出口温度；
步骤a13，若所述第一蒸发器盘管温度大于所述第一蒸发器出口温度，则将所述第一蒸发器盘管温度作为所述室内机的第一蒸发器温度，并通过室内环境温度传感器获取室内环境温度；
在本实施例中，判断第一蒸发器盘管温度是否大于第一蒸发器出口温度，若第一蒸发器盘管温度大于第一蒸发器出口温度，则将第一蒸发器盘管温度作为室内机的第一蒸发器温度，并通过室内环境温度传感器获取室内环境温度。其中，室内环境温度传感器设置于空调器室内机中。
可以理解，若第一蒸发器盘管温度大于第一蒸发器出口温度，直接将第一蒸发器盘管温度作为第一蒸发器温度，在之后判断过程，即判断第一蒸发器温度是否小于化霜开启阈值时，相当于判断第一蒸发器盘管温度及第一蒸发器出口温度是否同时小于化霜开启阈值。
步骤a14，若所述第一蒸发器盘管温度小于或等于所述第一蒸发器出口温度，则将所述第一蒸发器出口温度作为所述室内机的第一蒸发器温度，并通过室内环境温度传感器获取室内环境温度。
在本实施例中，判断第一蒸发器盘管温度是否大于第一蒸发器出口温度，若第一蒸发器盘管温度小于或等于第一蒸发器出口温度，则将第一蒸发器出口温度作为室内机的第一蒸发器温度，并通过室内环境温度传感器获取室内环境温度。其中，室内环境温度传感器设置于空调器室内机中。
可以理解，若第一蒸发器盘管温度小于或等于第一蒸发器出口温度，直接将第一蒸发器出口温度作为第一蒸发器温度，在之后判断过程，即判断第一蒸发器温度是否小于化霜开启阈值时，相当于判断第一蒸发器盘管温度及第一蒸发器出口温度是否同时小于化霜开启阈值。
本实施例中，综合考虑蒸发器盘管温度及蒸发器出口温度，确定蒸发器温度，进一步提高蒸发器温度检测的准确性，以保证空调器及时进入化霜模式。
进一步地，基于上述第一实施例，提出本申请化霜控制方法的第三实施例。
参照图3，图3为本申请化霜控制方法第三实施例的流程示意图。
在本实施例中，本申请化霜控制方法还包括：
步骤S50，在所述空调器化霜时，获取所述室内机的第二蒸发器温度；
在本实施例中，在空调器化霜时，获取室内机的第二蒸发器温度。具体的，在空调器化霜时，空调器启动温度检测模块，该温度检测模块通过蒸发器温度传感器进行检测，得到第二蒸发器温度。其中，蒸发器温度传感器可设置于室内机的蒸发器盘管上、支路入口或支路出口。
需要说明的是，第二蒸发器温度是用来判断空调器是否退出化霜模式，与上述第一蒸发器温度不同，上述第一蒸发器温度是用来判断空调器是否进入化霜模式。
具体的，步骤S50包括：
步骤a51，在所述空调器化霜时，通过蒸发器盘管温度传感器获取所述室内机的第二蒸发器盘管温度，并通过蒸发器出口温度传感器获取所述室内机的第二蒸发器出口温度；
在本实施例中，在空调器化霜时，通过蒸发器盘管温度传感器获取室内机的第二蒸发器盘管温度，并通过蒸发器出口温度传感器获取室内机的第二蒸发器出口温度。其中，第二蒸发器盘管温度为空调器室内机蒸发器盘管上的温度；第二蒸发器出口温度为空调器室内机蒸发器支路出口上的温度。
需要说明的是，蒸发器盘管温度传感器设置于空调器室内机蒸发器盘管上，蒸发器出口温度传感器设置于空调器室内机蒸发器支路出口上。当然，蒸发器盘管温度传感器可包括一个或多个，蒸发器出口温度传感器可包括一个或多个，此处不作具体限定。
具体的，步骤a51包括：
步骤a511，在所述空调器化霜时，通过多个蒸发器盘管温度传感器获取多个蒸发器盘管温度，并通过多个蒸发器出口温度传感器获取多个蒸发器出口温度；
在本实施例中，在空调器化霜时，通过多个蒸发器盘管温度传感器获取多个蒸发器盘管温度，并通过多个蒸发器出口温度传感器获取多个蒸发器出口温度。可以理解，检测越多的蒸发器盘管温度传感器，得到的蒸发器盘管温度更加准确，检测越多的蒸发器出口温度，得到的蒸发器出口温度更加准确。
步骤a512，将所述多个蒸发器盘管温度进行平均运算，将得到的平均值作为所述空调器中室内机的第二蒸发器盘管温度；
然后，将多个蒸发器盘管温度进行平均运算，将得到的平均值作为空调器中室内机的第二蒸发器盘管温度。可以理解，多个蒸发器盘管温度通常相差不大，因此，将多个蒸发器盘管温度进行平均运算，得到的蒸发器盘管温度更加准确。当然，也可以通过中位数、众数等数学方法得到。
步骤a513，将所述多个蒸发器出口温度进行平均运算，将得到的平均值作为所述室内机的第二蒸发器出口温度。
然后，将多个蒸发器出口温度进行平均运算，将得到的平均值作为室内机的第二蒸发器出口温度。可以理解，多个蒸发器出口温度通常相差不大，因此，将多个蒸发器出口温度进行平均运算，得到的蒸发器出口温度更加准确。当然，也可以通过中位数、众数等数学方法得到。
步骤a52，判断所述第二蒸发器盘管温度是否小于所述第二蒸发器出口温度；
步骤a53，若所述第二蒸发器盘管温度小于所述第二蒸发器出口温度，则将所述第二蒸发器盘管温度作为所述室内机的第二蒸发器温度；
在本实施例中，判断第二蒸发器盘管温度是否小于第二蒸发器出口温度，若第二蒸发器盘管温度小于第二蒸发器出口温度，则将第二蒸发器盘管温度作为室内机的第二蒸发器温度。
可以理解，若第二蒸发器盘管温度小于第二蒸发器出口温度，直接将第二蒸发器盘管温度作为第二蒸发器温度，在之后的判断过程中，即判断第二蒸发器温度是否大于或等于预设化霜退出阈值，相当于判断第二蒸发器盘管温度及第二蒸发器出口温度是否同时大于或等于化霜开启阈值。
步骤a54，若所述第二蒸发器盘管温度大于或等于所述第二蒸发器出口温度，则将所述第二蒸发器出口温度作为所述室内机的第二蒸发器温度。
在本实施例中，判断第二蒸发器盘管温度是否小于第二蒸发器出口温度，若第二蒸发器盘管温度大于或等于第二蒸发器出口温度，则将第二蒸发器出口温度作为室内机的第二蒸发器温度。
可以理解，若第二蒸发器盘管温度大于或等于第二蒸发器出口温度，直接将第二蒸发器出口温度作为第二蒸发器温度，在之后的判断过程中，即判断第二蒸发器温度是否大于或等于预设化霜退出阈值，相当于判断第二蒸发器盘管温度及第二蒸发器出口温度是否同时大于或等于化霜开启阈值。
在本实施例中，综合考虑蒸发器盘管温度及蒸发器出口温度，进一步提高蒸发器温度检测的准确性，保证空调器及时退出化霜模式。
步骤S60，判断所述第二蒸发器温度是否大于或等于预设化霜退出阈值；
步骤S70，若所述第二蒸发器温度大于或等于所述预设化霜退出阈值，则控制所述空调器退出化霜模式，并控制所述电子膨胀阀的开度为预设固定开度。
在本实施例中，判断第二蒸发器温度是否大于或等于预设化霜退出阈值，若第二蒸发器温度大于或等于预设化霜退出阈值，则控制空调器退出化霜模式，并控制电子膨胀阀的开度为预设固定开度。其中，预设固定开度根据实际情况设定，例如480步、470步、460步等，此处不作具体限定。可以理解，预设固定开度为电子膨胀阀的最大开度或接近电子膨胀阀的最大开度。
需要说明的是，在室内机蒸发器上的霜融化时，检测蒸发器温度，该蒸发器温度为预设化霜退出阈值。可以理解，该预设化霜退出阈值在不同的环境下取值不同，通常该预设化霜退出阈值为25摄氏度至40摄氏度。
此外，还需要说明的是，退出化霜模式的具体方式包括压缩机关、四通阀开（制热运行模式）、室外风机开等方式，当然，为提升室内供暖效果，可将室内风机开启。可以理解，在空调器化霜过程中，若发生故障、关机或转换模式则立即控制空调器退出化霜模式。
本实施例中，在控制空调器进入化霜模式后，将空调器中室内机的蒸发器温度与预设化霜退出阈值进行对比，然后，根据对比结果，控制空调器退出化霜模式，同时，控制室内机电子膨胀阀的开度为预设固定开度，以保证空调器化霜完成后及时退出化霜模式，从而恢复到原本的制热运行模式，保证室内持续供暖。
进一步地，基于上述第一实施例，提出本申请化霜控制方法的第四实施例。
参照图4，图4为本申请化霜控制方法第四实施例的流程示意图。
在本实施例中，在上述步骤S10之前，本申请化霜控制方法还包括：
步骤S80，当接收到四通阀控制信号时，判断所述四通阀控制信号是否为制热控制信号；
在本实施例中，当接收到四通阀控制信号时，判断所述四通阀控制信号是否为制热控制信号。其中，四通阀控制信号可控制四通阀开启或关闭，当四通阀控制信号控制四通阀开启时，该四通阀控制信号为制热控制信号；当四通阀控制信号控制四通阀关闭时，该四通阀控制信号为制冷控制信号。
步骤S90，若所述四通阀控制信号为所述制热控制信号，则控制空调器进入制热运行模式；
在本实施例中，若四通阀控制信号为制热控制信号，则控制空调器进入制热运行模式。其中，空调器进入制热运行模式时，室外机进入节流状态，室内机电子膨胀阀的开度为预设固定开度，当然，电子膨胀阀也可以处于全开状态。
步骤S100，在所述空调器处于制热运行模式时，控制所述空调器中室内机的电子膨胀阀的开度为预设固定开度。
然后，在空调器处于制热运行模式时，控制空调器中室内机的电子膨胀阀的开度为预设固定开度。其中，预设固定开度根据实际情况设定，例如480步、470步、460步等，此处不作具体限定。可以理解，预设固定开度为电子膨胀阀的最大开度或接近电子膨胀阀的最大开度。
本实施例中，在控制空调器进入化霜模式之前，先控制空调器进入制热运行模式，并控制室内机电子膨胀阀的开度为预设固定开度，以保证空调器室外机为节流状态，室内机为无节流状态。
本申请还提供一种空调器，该空调器包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的化霜控制程序，所述化霜控制程序被所述处理器执行时实现如以上任一项实施例所述的化霜控制方法的步骤。
进一步地，所述空调器设有与所述处理器连接的蒸发器盘管温度传感器及蒸发器出口温度传感器，其中，所述蒸发器盘管温度传感器设置于所述空调器中室内机的蒸发器的盘管上，所述蒸发器出口温度传感器设置于所述蒸发器的支路出口上。
本申请空调器的具体实施例与上述化霜控制方法各实施例基本相同，在此不作赘述。
本申请还提供一种计算机可读存储介质，该计算机可读存储介质上存储有化霜控制程序，所述化霜控制程序被处理器执行时实现如以上任一项实施例所述的化霜控制方法的步骤。
本申请计算机可读存储介质的具体实施例与上述化霜控制方法各实施例基本相同，在此不作赘述。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者系统不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者系统所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者系统中还存在另外的相同要素。
上述本申请实施例序号仅仅为了描述，不代表实施例的优劣。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在如上所述的一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本申请各个实施例所述的方法。
以上仅为本申请的优选实施例，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (10)

  1. 一种化霜控制方法，其中，所述化霜控制方法包括以下步骤：
    在空调器处于制热运行模式时，获取所述空调器中室内机的第一蒸发器温度，并获取室内环境温度；
    将所述室内环境温度与预设波动值进行加法运算，将得到的值作为化霜开启阈值；
    判断所述第一蒸发器温度是否小于所述化霜开启阈值；以及
    若所述第一蒸发器温度小于所述化霜开启阈值，则控制所述空调器进入化霜模式，并控制所述室内机中电子膨胀阀的开度为预设化霜开度。
  2. 如权利要求1所述的化霜控制方法，其中，所述在空调器处于制热运行模式时，获取所述空调器中室内机的第一蒸发器温度，并获取室内环境温度的步骤包括：
    在空调器处于制热运行模式时，通过蒸发器盘管温度传感器获取所述空调器中室内机的第一蒸发器盘管温度，并通过蒸发器出口温度传感器获取所述室内机的第一蒸发器出口温度；
    判断所述第一蒸发器盘管温度是否大于所述第一蒸发器出口温度；
    若所述第一蒸发器盘管温度大于所述第一蒸发器出口温度，则将所述第一蒸发器盘管温度作为所述室内机的第一蒸发器温度，并通过室内环境温度传感器获取室内环境温度；以及
    若所述第一蒸发器盘管温度小于或等于所述第一蒸发器出口温度，则将所述第一蒸发器出口温度作为所述室内机的第一蒸发器温度，并通过室内环境温度传感器获取室内环境温度。
  3. 如权利要求2所述的化霜控制方法，其中，所述在空调器处于制热运行模式时，通过蒸发器盘管温度传感器获取所述空调器中室内机的第一蒸发器盘管温度，并通过蒸发器出口温度传感器获取所述室内机的第一蒸发器出口温度的步骤包括：
    在空调器处于制热运行模式时，通过多个蒸发器盘管温度传感器获取多个蒸发器盘管温度，并通过多个蒸发器出口温度传感器获取多个蒸发器出口温度；
    将所述多个蒸发器盘管温度进行平均运算，将得到的平均值作为所述空调器中室内机的第一蒸发器盘管温度；以及
    将所述多个蒸发器出口温度进行平均运算，将得到的平均值作为所述室内机的第一蒸发器出口温度。
  4. 如权利要求1所述的化霜控制方法，其中，所述化霜控制方法还包括：
    在所述空调器化霜时，获取所述室内机的第二蒸发器温度；
    判断所述第二蒸发器温度是否大于或等于预设化霜退出阈值；以及
    若所述第二蒸发器温度大于或等于所述预设化霜退出阈值，则控制所述空调器退出化霜模式，并控制所述电子膨胀阀的开度为预设固定开度。
  5. 如权利要求4所述的化霜控制方法，其中，所述在所述空调器化霜时，获取所述室内机的第二蒸发器温度的步骤包括：
    在所述空调器化霜时，通过蒸发器盘管温度传感器获取所述室内机的第二蒸发器盘管温度，并通过蒸发器出口温度传感器获取所述室内机的第二蒸发器出口温度；
    判断所述第二蒸发器盘管温度是否小于所述第二蒸发器出口温度；
    若所述第二蒸发器盘管温度小于所述第二蒸发器出口温度，则将所述第二蒸发器盘管温度作为所述室内机的第二蒸发器温度；以及
    若所述第二蒸发器盘管温度大于或等于所述第二蒸发器出口温度，则将所述第二蒸发器出口温度作为所述室内机的第二蒸发器温度。
  6. 如权利要求5所述的化霜控制方法，其中，所述在所述空调器化霜时，通过蒸发器盘管温度传感器获取所述室内机的第二蒸发器盘管温度，并通过蒸发器出口温度传感器获取所述室内机的第二蒸发器出口温度的步骤包括：
    在所述空调器化霜时，通过多个蒸发器盘管温度传感器获取多个蒸发器盘管温度，并通过多个蒸发器出口温度传感器获取多个蒸发器出口温度；
    将所述多个蒸发器盘管温度进行平均运算，将得到的平均值作为所述空调器中室内机的第二蒸发器盘管温度；以及
    将所述多个蒸发器出口温度进行平均运算，将得到的平均值作为所述室内机的第二蒸发器出口温度。
  7. 如权利要求1至6中任一项所述的化霜控制方法，其中，所述在空调器处于制热运行模式时，获取所述空调器中室内机的第一蒸发器温度，并获取室内环境温度的步骤之前，还包括：
    当接收到四通阀控制信号时，判断所述四通阀控制信号是否为制热控制信号；
    若所述四通阀控制信号为所述制热控制信号，则控制空调器进入制热运行模式；以及
    在所述空调器处于制热运行模式时，控制所述空调器中室内机的电子膨胀阀的开度为预设固定开度。
  8. 一种空调器，其中，所述空调器包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的化霜控制程序，所述化霜控制程序被所述处理器执行时实现如权利要求1至7中任一项所述的化霜控制方法的步骤。
  9. 如权利要求8所述的空调器，其中，所述空调器设有与所述处理器连接的蒸发器盘管温度传感器及蒸发器出口温度传感器，其中，所述蒸发器盘管温度传感器设置于所述空调器中室内机的蒸发器的盘管上，所述蒸发器出口温度传感器设置于所述蒸发器的支路出口上。
  10. 一种计算机可读存储介质，其中，所述计算机可读存储介质上存储有化霜控制程序，所述化霜控制程序被处理器执行时实现如权利要求1至7中任一项所述的化霜控制方法的步骤。
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