CN114543263B - Coil temperature control method, coil temperature control device and storage medium - Google Patents
Coil temperature control method, coil temperature control device and storage medium Download PDFInfo
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- CN114543263B CN114543263B CN202210111663.5A CN202210111663A CN114543263B CN 114543263 B CN114543263 B CN 114543263B CN 202210111663 A CN202210111663 A CN 202210111663A CN 114543263 B CN114543263 B CN 114543263B
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- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000012544 monitoring process Methods 0.000 claims abstract description 28
- 238000004378 air conditioning Methods 0.000 claims description 28
- 238000012545 processing Methods 0.000 claims description 17
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- 230000008859 change Effects 0.000 claims description 8
- 230000002829 reductive effect Effects 0.000 abstract description 11
- 238000010438 heat treatment Methods 0.000 description 19
- 238000004891 communication Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 238000010257 thawing Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000005057 refrigeration Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
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Classifications
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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
- F24F11/41—Defrosting; Preventing freezing
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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
- 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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump 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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
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- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present disclosure relates to a coil temperature control method, a coil temperature control device and a storage medium. The coil temperature control method comprises the following steps: monitoring the current coil temperature of the air conditioner heat exchanger, and determining the critical coil temperature of the air conditioner heat exchanger, wherein the critical coil temperature is the minimum coil temperature for ensuring that frosting does not occur on the coil of the current air conditioner heat exchanger; and if the current coil temperature is monitored to be smaller than or equal to the critical coil temperature, adjusting the current coil temperature until the current coil temperature is larger than or equal to the critical coil temperature. The possibility of frosting of the air conditioner can be reduced through the air conditioner.
Description
Technical Field
The disclosure relates to the technical field of smart home, in particular to a coil temperature control method, a coil temperature control device and a storage medium.
Background
With the improvement of the living standard of people, the air conditioner becomes an indispensable electrical appliance in the life of people.
In the related art, when the air conditioner is in operation, the refrigerant in the air conditioner heat exchanger (an indoor side heat exchanger in refrigeration and an outdoor side heat exchanger in heating) evaporates and absorbs heat, and the temperature of a heat exchanger coil is lower than the ambient temperature. When the relative humidity in the environment is high and the coil temperature is below the dew point temperature, moisture in the air can frost on the fins of the heat exchanger. Under the condition, the heat exchange area of the heat exchanger is reduced and is influenced by frosting, the air quantity of the heat exchanger is reduced, so that the heat exchange efficiency of the heat exchanger is reduced, and the actual use effect of the air conditioner is influenced.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a coil temperature control method, a coil temperature control apparatus, and a storage medium.
According to a first aspect of embodiments of the present disclosure, there is provided a coil temperature control method, comprising:
Monitoring the current coil temperature of an air conditioner heat exchanger, and determining the critical coil temperature of the air conditioner heat exchanger, wherein the critical coil temperature is the minimum coil temperature for ensuring that frosting does not occur on a coil of the air conditioner heat exchanger at present; and if the current coil temperature is monitored to be smaller than the critical coil temperature, adjusting the current coil temperature until the current coil temperature is larger than or equal to the critical coil temperature.
In one embodiment, the determining the critical coil temperature of the air conditioner heat exchanger includes: determining the dew point temperature and the absolute moisture content of air of the current environment of the air-conditioning heat exchanger; based on a preset compensation temperature and the absolute moisture content of the air, performing temperature compensation on the dew point temperature; and determining the critical coil temperature of the air conditioner heat exchanger based on the compensated dew point temperature.
In one embodiment, the temperature compensation for the dew point temperature based on a preset compensation temperature and the absolute moisture content of the air includes: determining a difference between the dew point temperature and the preset compensation temperature, and determining a ratio between the absolute moisture content of the air and a preset absolute moisture content of the air; and obtaining the compensated dew point temperature through the sum value between the difference value and the ratio.
In one embodiment, the adjusting the current coil temperature of the air conditioner based on the critical coil temperature includes: determining a target temperature difference between the critical coil temperature and a current coil temperature of the air conditioner; determining a target compressor frequency variation value matched with the target temperature difference value based on a correspondence between the temperature difference value and the compressor frequency variation value of the air conditioner; and adjusting the frequency of the compressor of the air conditioner according to the target compressor frequency change value so as to adjust the current coil temperature.
In one embodiment, before the monitoring the current coil temperature of the air conditioning heat exchanger, the method further comprises: determining that an execution condition for monitoring the current coil temperature is satisfied, the execution condition for monitoring the current coil temperature including one or a combination of the following: the temperature difference between the indoor environment temperature and the set temperature is smaller than a first temperature threshold; the operation time of the air conditioner compressor reaches the appointed time; the environmental temperature of the current environment of the heat exchanger is smaller than or equal to a second temperature threshold value, and the current coil temperature of the air conditioner is smaller than or equal to a third temperature threshold value.
According to a second aspect of embodiments of the present disclosure, there is provided a coil temperature control apparatus comprising:
The monitoring unit is used for monitoring the current coil temperature of the air conditioner heat exchanger; the determining unit is used for determining the critical coil temperature of the air conditioner heat exchanger, wherein the critical coil temperature is the minimum coil temperature for ensuring that no frosting occurs on a coil of the air conditioner heat exchanger at present; and the processing unit is used for adjusting the current coil temperature under the condition that the current coil temperature is monitored to be smaller than the critical coil temperature until the current coil temperature is larger than or equal to the critical coil temperature.
In one embodiment, the determining unit determines the critical coil temperature of the air conditioner heat exchanger by: determining the dew point temperature and the absolute moisture content of air of the current environment of the air-conditioning heat exchanger; based on a preset compensation temperature and the absolute moisture content of the air, performing temperature compensation on the dew point temperature; and determining the critical coil temperature of the air conditioner heat exchanger based on the compensated dew point temperature.
In one embodiment, the determining unit performs temperature compensation for the dew point temperature based on a preset compensation temperature and the absolute moisture content of the air in the following manner: determining a difference between the dew point temperature and the preset compensation temperature, and determining a ratio between the absolute moisture content of the air and a preset absolute moisture content of the air; and obtaining the compensated dew point temperature through the sum value between the difference value and the ratio.
In one embodiment, the processing unit adjusts the current coil temperature of the air conditioner based on the critical coil temperature in the following manner: determining a target temperature difference between the critical coil temperature and a current coil temperature of the air conditioner; determining a target compressor frequency variation value matched with the target temperature difference value based on a correspondence between the temperature difference value and the compressor frequency variation value of the air conditioner; and adjusting the frequency of the compressor of the air conditioner according to the target compressor frequency change value so as to adjust the current coil temperature.
In one embodiment, the determining unit is further configured to: before monitoring a current coil temperature of the air-conditioning heat exchanger, determining that an execution condition for monitoring the current coil temperature is met, wherein the execution condition for monitoring the current coil temperature is met comprises one or a combination of the following: the temperature difference between the indoor environment temperature and the set temperature is smaller than a first temperature threshold; the operation time of the air conditioner compressor reaches the appointed time; the environmental temperature of the current environment of the heat exchanger is smaller than or equal to a second temperature threshold value, and the current coil temperature of the air conditioner is smaller than or equal to a third temperature threshold value.
According to a third aspect of the disclosed embodiments, there is provided a coil temperature control apparatus comprising:
a processor; a memory for storing processor-executable instructions;
Wherein the processor is configured to: the coil temperature control method of the first aspect or any implementation of the first aspect is performed.
According to a fourth aspect of the disclosed embodiments, there is provided a storage medium having instructions stored therein, which when executed by a processor, enable the processor to perform the coil temperature control method of the first aspect or any one of the embodiments of the first aspect.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: and monitoring the current coil temperature of the air conditioner heat exchanger, and determining the critical coil temperature of the air conditioner heat exchanger, wherein the critical coil temperature is the minimum coil temperature for ensuring that frosting does not occur on the coil of the current air conditioner heat exchanger. Further, the current coil temperature may be adjusted until the current coil temperature is greater than or equal to the critical coil temperature if the current coil temperature is monitored to be less than or equal to the critical coil temperature. Based on the above, in the process of refrigerating or heating by the air conditioner, the coil temperature of the air conditioner heat exchanger can be ensured to be greater than or equal to the critical coil temperature, so that the possibility of frosting of the air conditioner heat exchanger is reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a flow chart illustrating a method of coil temperature control according to an exemplary embodiment.
FIG. 2 is a flowchart illustrating a method of determining a critical coil temperature of an air conditioner heat exchanger, according to an exemplary embodiment.
FIG. 3 is a flowchart illustrating another method of determining a critical coil temperature of an air conditioner heat exchanger, according to an exemplary embodiment.
FIG. 4 is a flowchart illustrating a method of adjusting a current coil temperature of an air conditioner based on a critical coil temperature, according to an example embodiment.
Fig. 5 is a schematic diagram showing a correspondence table between a temperature difference value and a frequency variation value of an air conditioner compressor according to an exemplary embodiment.
FIG. 6 is a flow chart illustrating another coil temperature control method according to an example embodiment.
Fig. 7 is a coil temperature control flow diagram for an air conditioning heating scenario, according to an example embodiment.
Fig. 8 is a block diagram illustrating a coil temperature control device according to an example embodiment.
Fig. 9 is a block diagram illustrating an apparatus for coil temperature control according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure.
In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the present disclosure. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present disclosure and are not to be construed as limiting the present disclosure. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure. Embodiments of the present disclosure are described in detail below with reference to the attached drawings.
The coil temperature control method provided by the embodiment of the disclosure can be applied to a working scene of refrigerating or heating of an air conditioner.
With the improvement of the living standard of people, the air conditioner becomes an indispensable electrical appliance in the life of people.
In the related art, when the air conditioner is in operation, the refrigerant in the air conditioner heat exchanger (an indoor side heat exchanger in refrigeration and an outdoor side heat exchanger in heating) evaporates and absorbs heat, and the temperature of a heat exchanger coil is lower than the ambient temperature. When the relative humidity in the environment is high and the coil temperature is below the dew point temperature, moisture in the air can frost on the fins of the heat exchanger. Under the condition, the heat exchange area of the heat exchanger is reduced and is influenced by frosting, the air quantity of the heat exchanger is reduced, so that the heat exchange efficiency of the heat exchanger is reduced, and the actual use effect of the air conditioner is influenced.
In the related art, the frosting degree of the air conditioner can be judged by the ambient temperature and/or the ambient humidity. Furthermore, under the condition that the frosting degree of the air-conditioner heat exchanger meets the preset condition, the frosting air-conditioner heat exchanger is subjected to heating defrosting treatment in a reverse heat exchange mode, so that the influence of frosting of the air-conditioner heat exchanger on heat exchange efficiency is improved. However, in the related art, the defrosting of the heat exchanger of the air conditioner by the reverse heat exchange method may affect the actual cooling or heating performance of the air conditioner. For example, if a user turns on a cooling mode of the air conditioner and the air conditioner currently performs a defrosting operation, the air conditioner cannot continuously supply cool air into the room during a defrosting operation in a reverse heat exchange manner, so that the indoor environment temperature fluctuates. In addition, the defrosting operation is required to be executed under the condition that the frosting of the air-conditioner heat exchanger reaches a certain degree, so that the problem of frosting work exists in the actual working process of the air-conditioner heat exchanger. In this case, the heat exchange efficiency of the air conditioner heat exchanger is lowered, and the air conditioner cannot perform cooling or heating with a superior effect. In addition, since the actual operation process of the defrosting operation is to convert solid frost into liquid water, there may be a water leakage hazard. In summary, in the related art, the processing manner of the frosting phenomenon of the air conditioner heater cannot meet the actual use requirement of the user.
In view of this, the present disclosure provides a coil temperature control method that can monitor the current coil temperature of an air conditioner heat exchanger and adjust the current coil temperature through a critical coil temperature. Wherein, the critical coil temperature is the minimum coil temperature for ensuring that the coil of the current air-conditioner heat exchanger does not frost. Therefore, the current coil temperature is adjusted by the critical coil temperature so that the current coil temperature is greater than or equal to the critical coil temperature, and the possibility of frosting of the air conditioner heat exchanger can be effectively reduced. Based on the above, the air conditioner can realize continuous refrigeration or heating, the problem of frosting work of the air conditioner heat exchanger is improved, and the working efficiency is improved. In addition, the method reduces the possibility of frosting of the air conditioner by adjusting the temperature of the coil, so that the arrangement cost of the drainage pipeline can be reduced compared with the method for defrosting the air conditioner heat exchanger in the related art.
Fig. 1 is a flow chart illustrating a coil temperature control method, as shown in fig. 1, for use in a terminal, according to an exemplary embodiment, including the following steps.
In step S11, the current coil temperature of the air conditioner heat exchanger is monitored and a critical coil temperature of the air conditioner heat exchanger is determined.
In the disclosed embodiments, the critical coil temperature may be understood as the minimum coil temperature that ensures that no frosting occurs to the coils of the current air conditioner heat exchanger. For example, if the current coil temperature of the air conditioner heat exchanger is less than the critical coil temperature, the air conditioner heat exchanger may suffer from frosting.
In step S12a, if the current coil temperature is monitored to be less than the critical coil temperature, the current coil temperature is adjusted until the current coil temperature is greater than or equal to the critical coil temperature.
In step S12b, if it is monitored that the current coil temperature is greater than the critical coil temperature, the current coil temperature is maintained.
By the coil temperature control method provided by the embodiment of the disclosure, the current coil temperature of the air conditioner heat exchanger can be adjusted by taking the critical coil temperature as a reference value, so that the possibility of frosting of the air conditioner heat exchanger is reduced, and the working efficiency of refrigerating or heating of the air conditioner is ensured.
By way of example, the critical coil temperature of the air conditioner heat exchanger may be determined by determining the dew point temperature and the absolute moisture content of the air at which the air conditioner heat exchanger is currently located Hua Jin.
Fig. 2 is a flowchart illustrating a method of determining a critical coil temperature of an air conditioner heat exchanger according to an exemplary embodiment, as shown in fig. 2, including the following steps S21 to S23.
In step S21, the dew point temperature and the absolute moisture content of the air in the environment in which the air-conditioning heat exchanger is currently located are determined.
In the embodiment of the disclosure, the determined dew point temperature and absolute moisture content of air are the dew point temperature and absolute moisture content of the environment in which the air-conditioning heat exchanger is currently located, wherein frosting problems may occur. For example, for an outdoor side air conditioner heat exchanger in which a frosting problem may occur when an air conditioner is refrigerating, the determined dew point temperature is an outdoor dew point temperature, and the determined absolute moisture content of air is an absolute moisture content of outdoor air. For another example, for an indoor side air conditioner heat exchanger where frosting may occur during air conditioning heating, the determined dew point temperature is an indoor dew point temperature, and the determined absolute moisture content of air is an absolute moisture content of indoor air.
By way of example, it is possible toIn the air conditioner, the dew point temperature (represented by t_d, for example) of the environment in which the air conditioner heat exchanger is currently located is determined. Wherein a and b are preset constants for adjusting the range of the dew point temperature, and lambda is an intermediate quantity for representing the indirect relationship between the dew point temperature and the environment relative humidity and the environment temperature. By way of example, it is possible to The intermediate quantity lambda is determined by means of (a). Wherein T represents the environmental temperature of the current environment of the air-conditioner heat exchanger, and U represents the relative humidity of the current environment of the air-conditioner heat exchanger. In addition, the range of the environmental relative humidity is 0-100, so the ratio of the environmental relative humidity to 100 can approximately represent the humidity state of the current environment of the air conditioner heat exchanger. In the embodiment of the present disclosure, the preset constant a may be set to 17.27 and the preset constant b may be set to 237.7. Of course, the preset constant may be set to other values according to actual requirements, and the setting value of the preset constant is not specifically limited in the disclosure.
By way of example, it is possible toIn the air conditioner, the absolute moisture content of the air in the environment in which the air conditioner heat exchanger is currently located is determined (shown as an example by d). Wherein Pw represents the partial pressure of ambient water vapor of the environment where the air-conditioning heat exchanger is currently located. In one embodiment, the partial pressure Pw of the ambient water vapor of the current environment of the air-conditioning heat exchanger may be determined by the ambient temperature of the current environment of the air-conditioning and the ambient relative humidity of the current environment of the air-conditioning. For example, the ambient water vapor partial pressure Pw may be determined by pw= (0.0808T 3-1.0435T2 +91.38t+309.45) ×u. Wherein T represents the environmental temperature of the current environment of the air-conditioner heat exchanger, and U represents the relative humidity of the current environment of the air-conditioner heat exchanger.
In step S22, the dew point temperature is temperature-compensated based on the preset compensation temperature and the absolute moisture content of the air.
In the embodiment of the disclosure, the preset compensation temperature is used for compensating the temperature influence of the air conditioner fan on the dew point temperature. In other words, the preset compensation temperature may be determined by the fan speed in the case of determining the air conditioner fan speed. Compensating the dew point temperature with a preset compensation temperature can improve the accuracy of the subsequently determined critical coil temperature.
In step S23, a critical coil temperature of the air conditioner heat exchanger is determined based on the compensated dew point temperature.
By the coil temperature control method provided by the embodiment of the disclosure, temperature compensation of dew point temperature can be realized by presetting compensation temperature and absolute moisture content of air, and the critical coil temperature of the air conditioner heat exchanger is obtained.
In addition, in the above embodiment, when determining the dew point temperature and the absolute moisture content of the air, the ambient temperature T and the ambient relative humidity U may be detected by the corresponding detecting elements disposed in the air conditioner. For example, the ambient temperature of the environment in which the air conditioner is currently located may be detected by a temperature detection element (e.g., a thermometer) disposed in the air conditioner. For another example, the relative humidity of the environment in which the air conditioner is currently located may be detected by a humidity detection element (e.g., a hygrometer) disposed in the air conditioner. In addition, the ambient temperature and/or the ambient relative humidity sent by the server may also be received by subscribing to the server. In one embodiment, an environmental parameter subscription request may be initiated to a site, such as a weather station, that may provide environmental parameter monitoring services, and after successful subscription, the environmental parameters sent by the weather station may be periodically received. For example, the air conditioner may initiate a subscription request to the weather station and periodically receive the outdoor ambient temperature and/or the outdoor ambient relative humidity sent by the weather station. Of course, the ambient temperature and/or the outdoor environment may be obtained by other means, which is not specifically limited by the present disclosure.
For example, in the case of determining the dew point temperature and the absolute moisture content of the air, the critical coil temperature may be obtained by temperature compensating the dew point temperature as follows.
Fig. 3 is a flowchart illustrating another method for determining a critical coil temperature of an air conditioner heat exchanger according to an exemplary embodiment, and as shown in fig. 3, steps S31 and S34 of the embodiment of the present disclosure are similar to the implementation process of steps S21 and S23 in fig. 2, and are not described herein.
In step S32, a difference between the dew point temperature and the preset compensation temperature is determined, and a ratio between the absolute moisture content of air and the absolute moisture content of preset air is determined.
For example, for the dew point temperature t_d and the preset compensation temperature m, the difference between the dew point temperature and the preset compensation temperature may be represented by t_d-m. For the air absolute moisture content d and the preset air absolute moisture content d_set, the ratio between the determined air absolute moisture content and the preset air absolute moisture content can be expressed by d/d_set.
In step S33, the compensated dew point temperature is obtained by the sum of the difference and the ratio.
For example, in case of determining the difference between the dew point temperature and the preset compensation temperature (represented by t_d-m for example) and the ratio between the absolute moisture content of air and the absolute moisture content of preset air (represented by d/d_set for example), the compensated dew point temperature may be represented by (t_d-m) +d/d_set. Further, the critical coil temperature (represented by t_e_target in the example) can be obtained by means of t_e_target= (t_d-m) +d/d_set when the compensated dew point temperature is obtained.
In the embodiment of the disclosure, corresponding temperature compensation can be set for the outdoor side heat exchanger and the outdoor side heat exchanger respectively, and the critical coil temperature is determined by matching relevant parameters including preset temperature compensation of the heat exchangers. For example, for an outdoor side heat exchanger, the critical coil temperature that matches the outdoor side heat exchanger may be determined by means of t_e_target = t_d_out-m 1 +d_out/d_set. Where t_d_out represents the outdoor dew point temperature, d_out represents the absolute humidity of the outdoor air, m 1 represents the preset temperature compensation (for example, m 1 may be set to 4) matching the outdoor side heat exchanger, and d_set represents the preset absolute humidity of the air. For another example, for an indoor side heat exchanger, the critical coil temperature that matches the outdoor side heat exchanger may be determined by means of t_e_target = t_d_in-m 2 +d_in/d_set. Where t_d_out represents the outdoor dew point temperature, d_out represents the absolute moisture content of the outdoor air, m 2 represents the preset temperature compensation matching the outdoor side heat exchanger (for example, m 2 may be set to any value in the range of 8 to 7.5), and d_set represents the preset absolute moisture content of the air.
In one embodiment, the temperature of the coil of the air conditioner heat exchanger can be adjusted by adjusting the working frequency of the air conditioner compressor.
FIG. 4 is a flowchart illustrating a method of adjusting a current coil temperature of an air conditioner based on a critical coil temperature, as shown in FIG. 4, according to an exemplary embodiment, including the following steps.
In step S41, a target temperature difference between the critical coil temperature and the current coil temperature of the air conditioner is determined.
For example, for a critical air conditioning coil temperature (shown in the example as t_e_target) and a current coil temperature (shown in the example as t_e), the temperature difference between the critical air conditioning coil temperature and the current coil temperature may be represented by t_e_target-t_e.
In step S42, a target compressor frequency variation value that matches the target temperature difference value is determined based on a correspondence relationship between the temperature difference value and the compressor frequency variation value of the air conditioner.
For example, the correspondence between the temperature difference and the compressor frequency variation value of the air conditioner may be a predetermined and stored correspondence, and the same or different compressor frequency variation values are matched for any target temperature difference. The compressor frequency change value can be understood as a working frequency difference value between the current working frequency of the compressor and the working frequency to which the compressor is to be adjusted.
In step S43, the compressor of the air conditioner is frequency-adjusted at the target compressor frequency variation value to adjust the current coil temperature.
In the embodiment of the disclosure, the frequency adjustment is performed on the compressor of the air conditioner by using the target compressor frequency variation value, for example, the current working frequency of the compressor and the target compressor frequency variation value may be used to determine the working frequency to which the compressor is to be adjusted. Further, the operating frequency of the compressor may be adjusted to the operating frequency to which the compressor is to be adjusted such that the current coil temperature is greater than or equal to the critical coil temperature. The method can realize the self-adaptive temperature control of the current coil temperature of the air conditioner by adjusting the frequency of the compressor.
In an embodiment, the correspondence between the temperature difference and the frequency variation of the air conditioner compressor may be predetermined and stored in a correspondence table, so as to be invoked when the current coil temperature needs to be adjusted.
Fig. 5 is a schematic diagram showing a correspondence table between a temperature difference value and a frequency variation value of an air conditioner compressor according to an exemplary embodiment. For example, as shown in fig. 5, in the case of determining the target temperature difference value, a temperature difference value range in which the target temperature difference value is located may be searched in the correspondence table, and when the temperature difference value range in which the target temperature difference value is located is determined, a compressor frequency variation value that matches the temperature difference value range may be determined as the target compressor frequency variation value. For example, if it is determined that the target temperature difference between the critical coil temperature and the current coil temperature of the air conditioner is 1.2, it may be determined that the temperature difference range in which the target temperature difference is located is (1, 2.5) and thus the target compressor frequency variation value is-6.
Further, it is understood that maintaining the current coil temperature in the event that the current coil temperature is greater than or equal to the critical coil temperature may also be accomplished by a table of correspondence between temperature differences and compressor frequency variation values. For example, as shown in fig. 5, if it is determined that the target temperature difference between the critical coil temperature and the current coil temperature of the air conditioner is-1, it may be determined that the temperature difference range in which the target temperature difference is located is (- +, 0.) since the compressor frequency variation value of the matching temperature difference range (- +, 0) is 0, it is possible to keep the compressor frequency variation value unchanged, and thus to achieve the maintenance of the current coil temperature.
In the embodiment of the disclosure, the execution condition for monitoring the current coil temperature can be preset, and then whether the air conditioner meets the execution condition for monitoring the current coil temperature or not can be judged before the current coil temperature is monitored, so that the temperature control on the coil temperature of the air conditioner heat exchanger in a specific scene is realized.
Fig. 6 is a flowchart of another coil temperature control method according to an exemplary embodiment, and as shown in fig. 6, step S52a and step S52b in the embodiment of the disclosure are similar to the implementation process of step S12a and step S12b in fig. 1, and are not described herein.
In step S51, in the case where it is determined that the execution condition for monitoring the current coil temperature is satisfied, the current coil temperature of the air conditioner heat exchanger is monitored, and the critical coil temperature of the air conditioner heat exchanger is determined.
For example, satisfying the performance condition of monitoring the current coil temperature includes one or a combination of the following. For convenience of description, the temperature threshold set for the temperature difference between the indoor ambient temperature and the set temperature is referred to as a first temperature threshold, the temperature threshold set for the ambient temperature of the environment where the heat exchanger is currently located is referred to as a second temperature threshold, and the temperature threshold set for the current coil temperature of the air conditioner is referred to as a third temperature threshold.
Executing a first condition: the temperature difference between the indoor ambient temperature and the set temperature is less than the first temperature threshold.
The set temperature is understood to be a temperature set by a user when cooling or heating by an air conditioner. By executing the first condition, the current indoor environment temperature can be ensured to meet the requirement of a user. Based on the method, the frosting problem of the air conditioner heat exchanger can be further prevented or improved under the condition that the requirement of a user for the indoor environment temperature is preferentially ensured.
For example, to ensure that the indoor ambient temperature can meet the user's needs, the first temperature threshold should be set as small as possible. Specifically, the first temperature threshold may be set to 4 ℃, or any other temperature that may meet the actual use requirements.
And the execution condition II: the operation time of the air conditioner compressor reaches the appointed time.
Similar to the first execution condition, the second execution condition can indirectly ensure that the current indoor environment temperature can meet the requirement of a user by ensuring the refrigerating or heating time length. Based on the method, the frosting problem of the air conditioner heat exchanger can be further prevented or improved under the condition that the requirement of a user for the indoor environment temperature is preferentially ensured. Specifically, the specified period of time may be set to 20 minutes, or any other period of time that can meet the actual use requirements.
In addition, the indoor environment temperature is generally stable, so that the situation that the indoor side heat exchanger is not frosted basically does not occur in a refrigeration scene. In other words, for a refrigeration scenario, regardless of the current temperature state of the air conditioner and the environment in which the air conditioner is located, frosting is often prevented by controlling the temperature of the coil. However, for heating scenes, if the air conditioner and the current temperature state of the environment in which the air conditioner is located are in a specific temperature state, defrosting does not need to be prevented. For example, for heating scenarios, situations may occur where both the coil temperature and the ambient temperature of the environment in which the heat exchanger is currently located are high. In this case, the heat exchanger will not generally be frosted.
Based on this, for a refrigeration scenario, coil temperature control needs can be satisfied by only executing condition one and/or executing condition two. And aiming at a heating scene, the execution condition III can be set in the following way, so that the current temperature states of the air conditioner and the environment are primarily judged.
Executing a third condition: the ambient temperature of the environment in which the heat exchanger is currently located is less than or equal to the second temperature threshold, and the current coil temperature of the air conditioner is less than or equal to the third temperature threshold.
Specifically, the second temperature threshold may be set to 5 ℃, or any other temperature that may satisfy the actual use requirement, and the third temperature threshold may be set to-2 ℃, or any other temperature that may satisfy the actual use requirement.
The present disclosure describes a coil temperature control flow of an air conditioner heat exchanger, taking an air conditioner heating scenario as an example.
Fig. 7 is a coil temperature control flow diagram for an air conditioning heating scenario, according to an example embodiment.
For example, as shown in fig. 7, for an air conditioning heating scenario, whether or not to perform coil temperature control may be determined by presetting execution conditions. For example, the first execution condition may be set such that a temperature difference between an indoor ambient temperature and a set temperature is less than or equal to 4 ℃ (represented by t_set-t_in < = -4 ℃ for example), the second execution condition may be set such that an operation duration of the air-conditioning compressor reaches 20 minutes, and the third execution condition may be set such that an outdoor ambient temperature is less than or equal to a second temperature threshold and a current coil temperature of the outdoor side heat exchanger is less than or equal to a third temperature threshold (represented by t_out < = 5 ℃ for example and t_e < = -2 ℃ for example). Further, when it is determined that one or more execution conditions cannot be satisfied currently, the process may be ended, the subsequent coil temperature adjustment process may not be executed, or when it is determined that the execution condition one, the execution condition two, and the execution condition three are all satisfied, the execution coil temperature adjustment may be triggered.
For example, if it is determined that the first, second and third execution conditions are currently satisfied, the outdoor dew point temperature and the absolute humidity of the outdoor air may be determined by the outdoor ambient temperature and the outdoor relative humidity, and then the critical coil temperature matching the outdoor side air conditioning heat exchanger may be determined by the outdoor dew point temperature and the absolute humidity of the outdoor air. The determination of the dew point temperature, the absolute moisture content of air and the critical coil temperature is described in the above embodiments, and reference is made to any of the above embodiments.
On the basis, a target temperature difference value between the critical coil temperature and the current coil temperature of the outdoor side heat exchanger can be determined, and a target compressor frequency change value matched with the target temperature difference value is determined through a corresponding relation between a pre-stored temperature difference value and a compressor frequency change value. Based on this, the compressor frequency may be adjusted by the target compressor frequency variation value such that the current coil temperature of the outdoor side heat exchanger is greater than or equal to the critical coil temperature. Based on the above, the coil temperature of the air conditioner heat exchanger can be always kept at a temperature value which is more than or equal to the critical coil temperature, so that the frosting problem of the air conditioner heat exchanger can be prevented or improved.
In addition, the coil temperature control method for the air conditioning refrigeration scene is similar to the control method for the air conditioning heat scene, and the relevant content can refer to the coil temperature control flow for the air conditioning heat scene, which is not described herein.
Based on the same conception, the embodiment of the disclosure also provides a coil temperature control device.
It will be appreciated that, in order to achieve the above-described functions, the coil temperature control apparatus provided in the embodiments of the present disclosure includes corresponding hardware structures and/or software modules that perform the respective functions. The disclosed embodiments may be implemented in hardware or a combination of hardware and computer software, in combination with the various example elements and algorithm steps disclosed in the embodiments of the disclosure. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Those skilled in the art may implement the described functionality using different approaches for each particular application, but such implementation is not to be considered as beyond the scope of the embodiments of the present disclosure.
Fig. 8 is a block diagram illustrating a coil temperature control device according to an example embodiment. Referring to fig. 8, the apparatus 100 includes a monitoring unit 101, a determining unit 102, and a processing unit 103.
A monitoring unit 101 for monitoring the current coil temperature of the air conditioning heat exchanger. And the determining unit 102 is configured to determine a critical coil temperature of the air-conditioning heat exchanger, where the critical coil temperature is a minimum coil temperature for ensuring that no frosting occurs on a coil of the current air-conditioning heat exchanger. And the processing unit 103 is used for adjusting the current coil temperature until the current coil temperature is greater than or equal to the critical coil temperature under the condition that the current coil temperature is monitored to be less than the critical coil temperature.
In one embodiment, the determination unit 102 determines the critical coil temperature of the air conditioner heat exchanger as follows: the dew point temperature and the absolute moisture content of the air in the current environment of the air-conditioning heat exchanger are determined. And carrying out temperature compensation on the dew point temperature based on the preset compensation temperature and the absolute moisture content of the air. And determining the critical coil temperature of the air conditioner heat exchanger based on the compensated dew point temperature.
In one embodiment, the determining unit 102 performs temperature compensation for the dew point temperature based on the preset compensation temperature and the absolute moisture content of the air in the following manner: the difference between the dew point temperature and the preset compensation temperature is determined, and the ratio between the absolute moisture content of the air and the absolute moisture content of the preset air is determined. And obtaining the compensated dew point temperature through the sum value between the difference value and the ratio.
In one embodiment, the processing unit 103 adjusts the current coil temperature of the air conditioner based on the critical coil temperature in the following manner: a target temperature difference between the critical coil temperature and the current coil temperature of the air conditioner is determined. And determining a target compressor frequency variation value matched with the target temperature difference value based on a correspondence relationship between the temperature difference value and the compressor frequency variation value of the air conditioner. The compressor of the air conditioner is frequency adjusted at the target compressor frequency variation value to adjust the current coil temperature.
In one embodiment, the determining unit 102 is further configured to: before monitoring the current coil temperature of the air conditioner heat exchanger, determining that the execution condition for monitoring the current coil temperature is met, wherein the execution condition for monitoring the current coil temperature is met comprises one or a combination of the following: the temperature difference between the indoor ambient temperature and the set temperature is less than the first temperature threshold. The operation time of the air conditioner compressor reaches the appointed time. The ambient temperature of the environment in which the heat exchanger is currently located is less than or equal to the second temperature threshold, and the current coil temperature of the air conditioner is less than or equal to the third temperature threshold.
The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.
Fig. 9 is a block diagram illustrating an apparatus 200 for coil temperature control, according to an exemplary embodiment. For example, apparatus 200 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, exercise device, personal digital assistant, or the like.
Referring to fig. 9, the apparatus 200 may include one or more of the following components: a processing component 202, a memory 204, a power component 206, a multimedia component 208, an audio component 210, an input/output (I/O) interface 212, a sensor component 214, and a communication component 216.
The processing component 202 generally controls overall operation of the apparatus 200, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 202 may include one or more processors 220 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 202 can include one or more modules that facilitate interactions between the processing component 202 and other components. For example, the processing component 202 may include a multimedia module to facilitate interaction between the multimedia component 208 and the processing component 202.
The memory 204 is configured to store various types of data to support operations at the apparatus 200. Examples of such data include instructions for any application or method operating on the device 200, contact data, phonebook data, messages, pictures, videos, and the like. The memory 204 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.
The power component 206 provides power to the various components of the device 200. The power components 206 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 200.
The multimedia component 208 includes a screen between the device 200 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 208 includes a front-facing camera and/or a rear-facing camera. The front camera and/or the rear camera may receive external multimedia data when the apparatus 200 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.
The audio component 210 is configured to output and/or input audio signals. For example, the audio component 210 includes a Microphone (MIC) configured to receive external audio signals when the device 200 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 204 or transmitted via the communication component 216. In some embodiments, audio component 210 further includes a speaker for outputting audio signals.
The I/O interface 212 provides an interface between the processing assembly 202 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.
The sensor assembly 214 includes one or more sensors for providing status assessment of various aspects of the apparatus 200. For example, the sensor assembly 214 may detect the on/off state of the device 200, the relative positioning of the components, such as the display and keypad of the device 200, the sensor assembly 214 may also detect a change in position of the device 200 or a component of the device 200, the presence or absence of user contact with the device 200, the orientation or acceleration/deceleration of the device 200, and a change in temperature of the device 200. The sensor assembly 214 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. The sensor assembly 214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 214 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 216 is configured to facilitate communication between the apparatus 200 and other devices in a wired or wireless manner. The device 200 may access a wireless network based on a communication standard, such as WiFi,4G or 5G, or a combination thereof. In one exemplary embodiment, the communication component 216 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 216 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 200 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.
In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 204, including instructions executable by processor 220 of apparatus 200 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
It is understood that the term "plurality" in this disclosure means two or more, and other adjectives are similar thereto. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. The singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It is further understood that the terms "first," "second," and the like are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the expressions "first", "second", etc. may be used entirely interchangeably. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.
It will be further understood that "connected" includes both direct connection where no other member is present and indirect connection where other element is present, unless specifically stated otherwise.
It will be further understood that although operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.
Claims (6)
1. A method of coil temperature control, the method comprising:
Monitoring the current coil temperature of an air conditioner heat exchanger, and determining the critical coil temperature of the air conditioner heat exchanger, wherein the critical coil temperature is the minimum coil temperature for ensuring that frosting does not occur on a coil of the air conditioner heat exchanger at present;
If the current coil temperature is monitored to be smaller than the critical coil temperature, the current coil temperature is adjusted until the current coil temperature is larger than or equal to the critical coil temperature;
The determining the critical coil temperature of the air conditioner heat exchanger includes:
determining the dew point temperature and the absolute moisture content of air of the current environment of the air-conditioning heat exchanger;
based on a preset compensation temperature and the absolute moisture content of the air, performing temperature compensation on the dew point temperature;
determining a critical coil temperature of the air conditioner heat exchanger based on the compensated dew point temperature;
based on a preset compensation temperature and the absolute moisture content of the air, performing temperature compensation on the dew point temperature, including:
Determining a difference between the dew point temperature and the preset compensation temperature, and determining a ratio between the absolute moisture content of the air and a preset absolute moisture content of the air;
and obtaining the compensated dew point temperature through the sum value between the difference value and the ratio.
2. The coil temperature control method of claim 1, wherein adjusting the current coil temperature of the air conditioner based on the critical coil temperature comprises:
determining a target temperature difference between the critical coil temperature and a current coil temperature of the air conditioner;
Determining a target compressor frequency variation value matched with the target temperature difference value based on a correspondence between the temperature difference value and the compressor frequency variation value of the air conditioner;
and adjusting the frequency of the compressor of the air conditioner according to the target compressor frequency change value so as to adjust the current coil temperature.
3. The coil temperature control method of claim 1, wherein prior to said monitoring the current coil temperature of the air conditioning heat exchanger, the method further comprises:
Determining that an execution condition for monitoring the current coil temperature is satisfied, the execution condition for monitoring the current coil temperature including one or a combination of the following:
The temperature difference between the indoor environment temperature and the set temperature is smaller than a first temperature threshold;
The running time of the air conditioner compressor reaches the appointed time;
The environmental temperature of the current environment of the air conditioner heat exchanger is smaller than or equal to a second temperature threshold value, and the current coil temperature of the air conditioner is smaller than or equal to a third temperature threshold value.
4. A coil temperature control apparatus, wherein the coil temperature control method according to any one of claims 1 to 3 is performed, the apparatus comprising:
the monitoring unit is used for monitoring the current coil temperature of the air conditioner heat exchanger;
The determining unit is used for determining the critical coil temperature of the air conditioner heat exchanger, wherein the critical coil temperature is the minimum coil temperature for ensuring that no frosting occurs on a coil of the air conditioner heat exchanger at present;
The processing unit is used for adjusting the current coil temperature until the current coil temperature is greater than or equal to the critical coil temperature under the condition that the current coil temperature is monitored to be less than the critical coil temperature;
The determining unit is further configured to determine a critical coil temperature of the air conditioner heat exchanger:
determining the dew point temperature and the absolute moisture content of air of the current environment of the air-conditioning heat exchanger;
based on a preset compensation temperature and the absolute moisture content of the air, performing temperature compensation on the dew point temperature;
determining a critical coil temperature of the air conditioner heat exchanger based on the compensated dew point temperature;
The determining unit is further configured to perform temperature compensation on the dew point temperature based on a preset compensation temperature and the absolute moisture content of the air:
Determining a difference between the dew point temperature and the preset compensation temperature, and determining a ratio between the absolute moisture content of the air and a preset absolute moisture content of the air;
and obtaining the compensated dew point temperature through the sum value between the difference value and the ratio.
5. A coil temperature control apparatus, comprising:
A processor;
A memory for storing processor-executable instructions;
wherein the processor is configured to: a coil temperature control method as claimed in any one of claims 1 to 3.
6. A storage medium having instructions stored therein that, when executed by a processor, enable the processor to perform the coil temperature control method of any one of claims 1 to 3.
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| JP2003214681A (en) * | 2002-01-22 | 2003-07-30 | Shin Meiwa Ind Co Ltd | Defrosting controller for freezer |
| US8365542B2 (en) * | 2009-03-15 | 2013-02-05 | Surendra Himatlal Shah | Frost free sub zero air conditioner |
| CN104374037B (en) * | 2013-08-14 | 2017-02-22 | 珠海格力电器股份有限公司 | Control method and control device of variable frequency air conditioner and variable frequency air conditioner |
| CN111412581B (en) * | 2019-01-07 | 2023-04-18 | 青岛海尔空调器有限总公司 | Defrosting control method for air conditioner |
| CN109855269A (en) * | 2019-02-15 | 2019-06-07 | 青岛海尔空调器有限总公司 | Air conditioner and its control method |
| CN112128942A (en) * | 2020-09-02 | 2020-12-25 | 青岛海尔空调器有限总公司 | Method and device for controlling humidity of air conditioner and air conditioner |
| CN112283878B (en) * | 2020-09-18 | 2021-09-28 | 珠海格力电器股份有限公司 | Air conditioner control method and device, storage medium and air conditioner |
| CN112268356B (en) * | 2020-10-22 | 2022-04-15 | 北京小米移动软件有限公司 | Fresh air temperature and humidity control method, system and device and storage medium |
| CN112963941A (en) * | 2021-03-18 | 2021-06-15 | 宁波奥克斯电气股份有限公司 | Air conditioner, control method thereof and defrosting control device |
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| CN102022872A (en) * | 2010-12-03 | 2011-04-20 | 劳特斯空调(江苏)有限公司 | Defrosting control method for intelligent air cooling heat pump |
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