CN110631210A - Air conditioner, method of controlling the same, and computer-readable storage medium - Google Patents
Air conditioner, method of controlling the same, and computer-readable storage medium Download PDFInfo
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- CN110631210A CN110631210A CN201910948528.4A CN201910948528A CN110631210A CN 110631210 A CN110631210 A CN 110631210A CN 201910948528 A CN201910948528 A CN 201910948528A CN 110631210 A CN110631210 A CN 110631210A
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- air conditioner
- preset
- compressor
- heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/43—Defrosting; Preventing freezing of indoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
Abstract
The invention discloses a control method of an air conditioner, which comprises the following steps: detecting working parameters of a compressor of the air conditioner in a refrigeration mode, wherein the working parameters comprise the running power or the input current of the compressor; and controlling the air conditioner to execute preset operation to defrost the indoor heat exchanger when the working parameter is smaller than a preset threshold value. The invention also discloses an air conditioner and a computer readable storage medium. The frosting determining precision of the indoor heat exchanger is high.
Description
Technical Field
The present invention relates to the field of air conditioners, and in particular, to an air conditioner, a control method thereof, and a computer-readable storage medium.
Background
When the air conditioner operates in a refrigeration mode, the indoor heat exchanger of the air conditioner can be frosted, and the compressor can be controlled to stop operating in order to reduce frosting. And the frosting of the indoor heat exchanger is determined by detecting the temperature of the middle part of the indoor heat exchanger. However, the detection deviation of the middle temperature of the indoor heat exchanger is large, for example, the middle temperature of the indoor heat exchanger is unstable due to the heat exchange between the indoor heat exchanger and air, so that the air conditioner cannot find that the indoor heat exchanger has a frosting tendency in time, and the frosting determination accuracy of the indoor heat exchanger is poor.
Disclosure of Invention
The invention mainly aims to provide an air conditioner, a control method thereof and a computer readable storage medium, and aims to solve the problem of poor frosting determination precision of an indoor heat exchanger.
In order to achieve the above object, the present invention provides a method for controlling an air conditioner, comprising:
detecting working parameters of a compressor of the air conditioner in a refrigeration mode, wherein the working parameters comprise the running power or the input current of the compressor;
and controlling the air conditioner to execute preset operation to defrost the indoor heat exchanger when the working parameter is smaller than a preset threshold value.
In one embodiment, the preset operation includes controlling the compressor to stop, and after the step of controlling the air conditioner to perform the preset operation, the method further includes:
determining the interval of the working parameters;
determining a target shutdown time length of the compressor according to the interval, wherein the smaller the interval is, the longer the target shutdown time length is;
and controlling the compressor to stop for the target stop time period and then starting.
In an embodiment, after the step of detecting an operating parameter of a compressor of the air conditioner in the cooling mode, the method further includes:
determining an interval where the working parameter is located and a first duration of the working parameter in the interval, wherein the maximum working parameter in the interval where the working parameter is located is smaller than a preset threshold value;
and when the first duration reaches a first preset duration corresponding to the interval, controlling the air conditioner to execute a preset operation step.
In an embodiment, after the step of detecting an operating parameter of a compressor of the air conditioner in the cooling mode, the method further includes:
the working parameter is smaller than a preset threshold value, and a second duration of the working parameter smaller than the preset threshold value is obtained;
and when the second duration reaches a second preset duration, executing the step of controlling the air conditioner to execute preset operation.
In one embodiment, the preset operation includes at least one of:
controlling the compressor to stop;
and outputting the frosting prompt information of the indoor heat exchanger.
In one embodiment, the air speed value of the indoor fan of the air conditioner is greater than a first preset air speed value during the shutdown process of the compressor.
In an embodiment, the method for controlling an air conditioner further includes:
the method comprises the steps that an air conditioner operates in a refrigeration mode, and reference parameters are obtained, wherein the reference parameters comprise outdoor temperature, indoor temperature and a wind speed value of an indoor fan;
and the step of detecting the working parameters of the compressor of the air conditioner in the refrigeration mode is executed when the reference parameters meet preset conditions.
In one embodiment, the preset condition includes at least one of:
the outdoor temperature is less than the preset outdoor temperature, and the indoor temperature is less than the preset indoor temperature;
the air speed value of the indoor fan is smaller than a second preset air speed value;
the duration that the wind speed value of the indoor fan is smaller than the second preset wind speed value is longer than the third preset duration.
In order to achieve the above object, the present invention further provides an air conditioner, which includes a memory, a processor, and a control program of the air conditioner stored in the memory and operable on the processor, wherein the control program of the air conditioner, when executed by the processor, implements the steps of the control method of the air conditioner as described above.
To achieve the above object, the present invention also provides a computer-readable storage medium storing a control program of an air conditioner, which when executed by a processor, implements the respective steps of the control program of the air conditioner as described above.
According to the air conditioner, the control method and the computer readable storage medium provided by the invention, when the air conditioner operates in a refrigeration mode, the working parameter of the compressor in the air conditioner is detected, the working parameter is the operating power or the input current of the compressor, and when the working parameter is smaller than a preset threshold value, the air conditioner is controlled to execute a preset operation to defrost the indoor heat exchanger. In the refrigeration mode of the air conditioner, if the temperature of the indoor heat exchanger is lower, the load of the compressor is reduced, and further the running power or the input current of the compressor is reduced, so that the air conditioner can determine whether the indoor heat exchanger has a frosting trend and whether the indoor heat exchanger has a frosting phenomenon according to the running power or the input current of the compressor; furthermore, the running power and the input current of the compressor are not influenced by external factors, so that the detected power deviation of the compressor is small, the air conditioner can accurately determine whether the indoor heat exchanger has a frosting trend according to the power of the compressor, and the frosting determination precision of the indoor heat exchanger is high.
Drawings
FIG. 1 is a schematic diagram of a hardware architecture of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a flow chart illustrating a control method of an air conditioner according to a first embodiment of the present invention;
FIG. 3 is a flow chart illustrating a control method of an air conditioner according to a second embodiment of the present invention;
FIG. 4 is a flow chart illustrating a control method of an air conditioner according to a third embodiment of the present invention;
FIG. 5 is a flow chart illustrating a fourth embodiment of a method for controlling an air conditioner according to the present invention;
fig. 6 is a flow chart illustrating a fifth embodiment of a control method of an air conditioner according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: detecting working parameters of a compressor of the air conditioner in a refrigeration mode, wherein the working parameters comprise the running power or the input current of the compressor; and controlling the air conditioner to execute preset operation to defrost the indoor heat exchanger when the working parameter is smaller than a preset threshold value.
In the refrigeration mode of the air conditioner, if the temperature of the indoor heat exchanger is lower, the load of the compressor is reduced, and further the running power or the input current of the compressor is reduced, so that the air conditioner can determine whether the indoor heat exchanger has a frosting trend and whether the indoor heat exchanger has a frosting phenomenon according to the running power or the input current of the compressor; furthermore, the running power and the input current of the compressor are not influenced by external factors, so that the detected power deviation of the compressor is small, the air conditioner can accurately determine whether the indoor heat exchanger has a frosting trend according to the power of the compressor, and the frosting determination precision of the indoor heat exchanger is high.
As one implementation, the air conditioner may be as shown in fig. 1.
The embodiment of the invention relates to an air conditioner, which comprises: a processor 101, e.g. a CPU, a memory 102, a communication bus 103. Wherein a communication bus 103 is used for enabling the connection communication between these components.
The memory 102 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). As shown in fig. 1, a control program of an air conditioner may be included in the memory 103 as a kind of computer storage medium; and the processor 101 may be configured to call a control program of the air conditioner stored in the memory 102 and perform the following operations:
detecting working parameters of a compressor of the air conditioner in a refrigeration mode, wherein the working parameters comprise the running power or the input current of the compressor;
and controlling the air conditioner to execute preset operation to defrost the indoor heat exchanger when the working parameter is smaller than a preset threshold value.
In one embodiment, the processor 101 may be configured to call a control program of an air conditioner stored in the memory 102 and perform the following operations:
determining the interval of the working parameters;
determining a target shutdown time length of the compressor according to the interval, wherein the smaller the interval is, the longer the target shutdown time length is;
and controlling the compressor to stop for the target stop time period and then starting.
In one embodiment, the processor 101 may be configured to call a control program of an air conditioner stored in the memory 102 and perform the following operations:
determining an interval where the working parameter is located and a first duration of the working parameter in the interval, wherein the maximum working parameter in the interval where the working parameter is located is smaller than a preset threshold value;
and when the first duration reaches a first preset duration corresponding to the interval, controlling the air conditioner to execute a preset operation step.
In one embodiment, the processor 101 may be configured to call a control program of an air conditioner stored in the memory 102 and perform the following operations:
the working parameter is smaller than a preset threshold value, and a second duration of the working parameter smaller than the preset threshold value is obtained;
and when the second duration reaches a second preset duration, executing the step of controlling the air conditioner to execute preset operation.
In one embodiment, the processor 101 may be configured to call a control program of an air conditioner stored in the memory 102 and perform the following operations:
controlling the compressor to stop;
and outputting the frosting prompt information of the indoor heat exchanger.
In one embodiment, the processor 101 may be configured to call a control program of an air conditioner stored in the memory 102 and perform the following operations:
and in the shutdown process of the compressor, the wind speed value of an indoor fan of the air conditioner is greater than a first preset wind speed value.
In one embodiment, the processor 101 may be configured to call a control program of an air conditioner stored in the memory 102 and perform the following operations:
the method comprises the steps that an air conditioner operates in a refrigeration mode, and reference parameters are obtained, wherein the reference parameters comprise outdoor temperature, indoor temperature and a wind speed value of an indoor fan;
and the step of detecting the working parameters of the compressor of the air conditioner in the refrigeration mode is executed when the reference parameters meet preset conditions.
In one embodiment, the processor 101 may be configured to call a control program of an air conditioner stored in the memory 102 and perform the following operations:
the outdoor temperature is less than the preset outdoor temperature, and the indoor temperature is less than the preset indoor temperature;
the air speed value of the indoor fan is smaller than a second preset air speed value;
the duration that the wind speed value of the indoor fan is smaller than the second preset wind speed value is longer than the third preset duration.
According to the scheme, when the air conditioner operates in the refrigeration mode, the working parameter of the compressor in the air conditioner is detected, the working parameter is the operating power or the input current of the compressor, and when the working parameter is smaller than the preset threshold value, the air conditioner is controlled to execute the preset operation so as to defrost the indoor heat exchanger. In the refrigeration mode of the air conditioner, if the temperature of the indoor heat exchanger is lower, the load of the compressor is reduced, and further the running power or the input current of the compressor is reduced, so that the air conditioner can determine whether the indoor heat exchanger has a frosting trend and whether the indoor heat exchanger has a frosting phenomenon according to the running power or the input current of the compressor; furthermore, the running power and the input current of the compressor are not influenced by external factors, so that the detected power deviation of the compressor is small, the air conditioner can accurately determine whether the indoor heat exchanger has a frosting trend according to the power of the compressor, and the frosting determination precision of the indoor heat exchanger is high.
Based on the hardware architecture of the air conditioner, the embodiment of the control method of the air conditioner is provided.
Referring to fig. 2, fig. 2 is a first embodiment of a control method of an air conditioner according to the present invention, the control method of the air conditioner including the steps of:
step S10, detecting working parameters of a compressor of the air conditioner in a refrigeration mode, wherein the working parameters comprise the running frequency or the input current of the compressor;
in this embodiment, the execution subject is an air conditioner or a control device of the air conditioner, the control device of the air conditioner may be a remote controller, a mobile terminal or a server, and the air conditioner is an air conditioner with a constant-frequency compressor. When the air conditioner operates in a refrigeration mode, a refrigerant in the indoor heat exchanger is condensed with air in the air duct through the surface of the indoor heat exchanger, so that the temperature of the air in the air duct is reduced, and the air conditioner conveys relatively cold air to the indoor space to achieve the purpose of refrigeration. Because the indoor heat exchanger condenses the air in the air duct, the surface of the indoor heat exchanger is easy to frost. In order to avoid frosting of the indoor heat exchanger, it is necessary to determine whether the indoor heat exchanger has a tendency of frosting.
Specifically, when indoor heat exchanger is not in the state of frosting, the input current of compressor is less with rated current's deviation, and when indoor heat exchanger has the trend of frosting, the refrigerant is only condensed by partly and air among the indoor heat exchanger, and carry vapor in the air, can make vapor attach to indoor heat exchanger surface, the refrigerant that does not carry out the condensation to the air can condense the water that indoor heat exchanger surface condenses, thereby make indoor heat exchanger surface frosting, therefore, make the load of compressor diminish, also make the power of compressor diminish. And when the input current of the compressor is small, the air conditioner calculates the ratio between the input current and the rated current, and then the ratio is multiplied by the rated power to obtain the power of the air conditioner. It can be understood that the indoor heat exchanger has a phenomenon or tendency of frosting when the input current or the operation power of the compressor is reduced.
When the indoor heat exchanger is not in a frosting state, the minimum refrigerating power of the compressor is not lower than 80% of the rated power when the air conditioner operates in a refrigerating mode, the rated power is Pe, the preset power is 0.8Pe, namely when the working parameter is the operating power, the preset threshold value is the preset power. The air conditioner judges whether the power is smaller than the preset power or not after obtaining the power of the compressor, and if the power is smaller than the preset power, the trend that the indoor heat exchanger frosts or the phenomenon that the indoor heat exchanger frosts can be judged. It should be noted that, the above is only an example of the preset power, and the preset power is not limited to 0.8Pe, and the preset power may be set according to the actual minimum cooling power of the compressor when the indoor heat exchanger is not in the frosting state, and of course, the preset power may also be set to be smaller than the actual minimum cooling power.
Certainly, when the working parameter is the input current of the compressor, the preset threshold is a preset current, the preset current may be 0.8Ie, the Ie is a rated current, and the setting of the preset current may be set with reference to a preset power, which is not described herein again.
And step S20, controlling the air conditioner to execute preset operation to defrost the indoor heat exchanger when the working parameter is smaller than a preset threshold value.
After the working parameter of the compressor is judged to be smaller than the preset threshold value, the air conditioner can judge the frosting tendency or phenomenon of the indoor heat exchanger. In this regard, the air conditioner is controlled to perform a preset operation, thereby defrosting the indoor heat exchanger. The preset operation may include at least one of controlling the compressor to be stopped and outputting a prompt message that the indoor heat exchanger is frosted. Specifically, the compressor is controlled to stop, so that the air conditioner stops operating in the refrigeration mode, and the compressor is controlled to stop when the difference value between the indoor temperature of the space where the air conditioner is located and the set temperature is small; if the difference value between the indoor temperature and the set temperature is large, the frosting prompt information of the indoor heat exchanger can be output to prompt a user, and therefore the user can determine whether to defrost the indoor heat exchanger.
It should be noted that, when the preset operation is a compressor shutdown, in the compressor shutdown process, the air speed of the indoor fan may be controlled to be greater than a first preset air speed value, where the first preset air speed value is a larger air speed value, and the air speed value of the indoor fan is controlled to be greater than the first preset air speed value, so that the air in the air duct exchanges heat with frost on the indoor heat exchanger, and the surface of the indoor heat exchanger is defrosted. The first preset wind speed value may be a maximum wind speed value of the indoor fan.
In the technical scheme provided by this embodiment, when the air conditioner operates in the cooling mode, a working parameter of a compressor in the air conditioner is detected, the working parameter is the operating power or the input current of the compressor, and when the working parameter is smaller than a preset threshold value, the air conditioner is controlled to execute a preset operation to defrost the indoor heat exchanger. In the refrigeration mode of the air conditioner, if the temperature of the indoor heat exchanger is lower, the load of the compressor is reduced, and further the running power or the input current of the compressor is reduced, so that the air conditioner can determine whether the indoor heat exchanger has a frosting trend and whether the indoor heat exchanger has a frosting phenomenon according to the running power or the input current of the compressor; furthermore, the running power and the input current of the compressor are not influenced by external factors, so that the detected power deviation of the compressor is small, the air conditioner can accurately determine whether the indoor heat exchanger has a frosting trend according to the power of the compressor, and the frosting determination precision of the indoor heat exchanger is high.
Referring to fig. 3, fig. 3 is a second embodiment of the control method of the air conditioner according to the present invention, and based on the first embodiment, after step S20, the method further includes:
step S30, determining the interval of the working parameters;
step S40, determining a target shutdown time length of the compressor according to the interval, wherein the smaller the interval is, the longer the target shutdown time length is;
and step S50, controlling the compressor to stop for the target stop time period and then starting.
In the present embodiment, the power intervals are divided for the operating parameters. For example, the operating parameter is the operating power of the compressor, the rated power of the compressor is Pe, the power can be divided into three power intervals, namely (0, 0.7Pe), [0.7Pe, 0.8Pe ] and (0.8Pe, Pe ], when the power of the compressor is (0, 0.7Pe), [0.7Pe, 0.8Pe ], the compressor has a frosting phenomenon or trend, and the smaller the power of the compressor is, the more serious the frosting phenomenon of the compressor is, so the compressor needs more time to defrost.
The air conditioner stores a mapping relation between a power interval and the shutdown time, and when the compressor is shutdown, the air conditioner determines the power interval where the power is located, wherein the power is the power before the compressor is shutdown; after the air conditioner determines the power interval of the power of the compressor, the shutdown time of the compressor can be determined according to the mapping relation and the determined power interval, and the determined shutdown time is the target shutdown time. The air conditioner is started after the compressor is stopped for the target stop time length, so that the air conditioner operates the refrigeration mode again after the indoor heat exchanger is defrosted.
The division of the current interval of the input current may refer to a division process of the power interval, and is not described herein again.
In the technical scheme provided by the embodiment, after the compressor is stopped, the interval where the working parameters are located is determined, so that the target stop time of the compressor is determined according to the interval, and the compressor is controlled to be started after the target stop time, so that the air conditioner runs the refrigeration mode again after the indoor heat exchanger is defrosted, and the refrigeration effect is ensured.
Referring to fig. 4, fig. 4 is a third embodiment of the method for controlling an air conditioner according to the present invention, and based on the first or second embodiment, after step S10, the method further includes:
step S60, determining the interval of the working parameter and the first duration of the working parameter in the interval, wherein the maximum working parameter in the interval of the working parameter is smaller than the preset threshold value;
and step S70, when the first duration reaches a first preset duration corresponding to the interval, executing the step of controlling the air conditioner to execute a preset operation.
In this embodiment, the operating parameter of the compressor can reflect the magnitude of the temperature of the surface of the indoor heat exchanger. However, the operating parameter of the compressor may be somewhat fluctuated, and thus, when the operating parameter of the compressor is less than the preset threshold, it may be that the operating parameter of the compressor suddenly jumps. For this reason, the smaller the interval is, the more serious the frosting degree of the indoor heat exchanger is, and therefore the smaller the first preset time is, and the maximum working parameters in the interval should be smaller than the preset threshold value.
After obtaining the working parameters of the compressor, the air conditioner determines the interval where the working parameters are located, and then obtains a first duration of the working parameters in the interval and a first preset duration corresponding to the interval; then judging whether the first duration reaches a first preset duration or not; if the first duration reaches a first preset duration, indicating that the indoor heat exchanger has a frosting phenomenon or trend, and controlling the air conditioner to execute a preset operation; when the first duration does not reach the first preset duration, that is, the working parameter of the compressor jumps to be higher than the preset threshold value, so that the first duration does not reach the first preset duration, it is indicated that the working parameter of the compressor is only jumped, the indoor heat exchanger does not frost or has no tendency of frosting, and at this time, the air conditioner does not need to be controlled to execute the preset operation.
In the technical scheme provided by this embodiment, when the working parameter of the compressor is smaller than the preset threshold, the interval where the working parameter is located and the duration of the working parameter located in the interval are determined, and if the duration reaches the preset duration corresponding to the interval, the frosting phenomenon or trend of the compressor can be accurately determined, so that the air conditioner is prevented from misjudging and responding to the refrigeration effect of the air conditioner.
Referring to fig. 5, fig. 5 is a fourth embodiment of the method for controlling an air conditioner according to the present invention, and based on the first or second embodiment, after step S10, the method further includes:
step S80, acquiring a second duration of the working parameter less than a preset threshold value, wherein the working parameter is less than the preset threshold value;
and step S90, when the second duration reaches a second preset duration, executing the step of controlling the air conditioner to execute preset operation.
In this embodiment, after obtaining the operating parameter of the compressor, if the operating parameter is smaller than the preset threshold, a second duration of the operating parameter smaller than the preset threshold is obtained, and if the second duration reaches the second preset duration, it may be determined that the indoor heat exchanger has a frosting phenomenon or a frosting tendency, and at this time, the air conditioner is controlled to execute the preset operation. The second predetermined period of time may be any suitable period of time. The reason for comparing the second duration of the working parameter of the compressor that is continuously smaller than the preset threshold value with the second preset duration may refer to the above description, and will not be described herein again.
In the technical scheme provided by this embodiment, when the working parameter of the compressor is less than the preset threshold, the duration that the working parameter is less than the preset threshold is determined, and if the duration reaches the preset duration, the frosting phenomenon or trend of the compressor can be accurately determined, so that the air conditioner is prevented from misjudging and responding to the refrigeration effect of the air conditioner.
Referring to fig. 6, fig. 6 is a fifth embodiment of a control method of an air conditioner according to the present invention, and based on any one of the first to fourth embodiments, the control method of the air conditioner further includes:
step S100, the air conditioner runs a refrigeration mode to obtain reference parameters, wherein the reference parameters comprise outdoor temperature, indoor temperature and a wind speed value of an indoor fan;
and step S110, the reference parameter meets a preset condition, and the step of detecting the working parameter of the compressor of the air conditioner in the refrigeration mode is executed.
When the air conditioner is in operation refrigeration, if outdoor temperature is lower, then the condensation effect of compressor can be better, leads to the power of compressor lower, if indoor temperature is also lower, then can further make the power of compressor diminish, also leads to the middle part temperature of indoor heat exchanger to become littleer promptly. Therefore, the frosting of the indoor heat exchanger is related to the indoor and outdoor temperature.
In addition, the wind speed value when indoor fan is less, the heat exchange efficiency of refrigerant and the air in wind channel is relatively poor among the indoor heat exchanger, can make indoor heat exchanger's middle part temperature diminish to make indoor heat exchanger surface frosting, also the wind speed value of indoor fan is also relevant with indoor heat exchanger frosting.
In contrast, after the air conditioner operates in the refrigeration mode, reference parameters are obtained, wherein the reference parameters comprise outdoor temperature, indoor temperature and a wind speed value of an indoor fan; the air conditioner then judges whether the reference parameter meets a preset condition.
The preset condition includes at least one of: the outdoor temperature is less than the preset outdoor temperature, and the indoor temperature is less than the preset indoor temperature; the air speed value of the indoor fan is smaller than a second preset air speed value; the duration that the wind speed value of the indoor fan is smaller than the second preset wind speed value is longer than the third preset duration. The preset outdoor temperature and the preset indoor temperature can be both 25 ℃, namely, the indoor temperature and the outdoor temperature are below 25 ℃, the indoor heat exchanger has a frosting phenomenon or tendency, and only tests show that when the indoor temperature is lower than 18 ℃ and the outdoor temperature is lower than 25 ℃, the surface of the indoor heat exchanger is frosted, so the preset indoor temperature can also be 18 ℃.
When the air speed value of the indoor fan is smaller than a second preset air speed value, the surface of the indoor heat exchanger tends to frost; and when the third duration that the wind speed value of the indoor heat exchanger is continuously smaller than the second preset wind speed value reaches the third preset duration, the surface of the indoor heat exchanger is frosted. The second preset wind speed value may be any suitable value, for example, the second preset wind speed value is a wind speed value corresponding to a low wind mode of the indoor fan. The third predetermined period of time may be any suitable value, for example, the third predetermined period of time may be 5 min.
When the reference parameters meet the preset conditions, the frosting phenomenon or trend of the compressor can be preliminarily judged, and at the moment, the working parameters of the compressor are obtained so as to further judge whether the indoor heat exchanger is frosted or the frosting trend is reached.
In the technical scheme provided by this embodiment, after the air conditioner operates in the cooling mode, the reference parameter is obtained, and when the reference parameter meets the preset condition, the power of the compressor is detected, so as to further judge whether the indoor heat exchanger frosts or has a frosting trend.
In one embodiment, the indoor heat exchanger has a frosting phenomenon or a frosting tendency, and if the indoor heat exchanger needs to be defrosted or frosted, the compressor needs to be controlled to stop, which may affect the refrigeration requirement of the air conditioner of the user. For this reason, the air conditioner needs to determine the magnitude of the cooling demand of the user on the air conditioner, and the magnitude of the cooling demand can be represented by the difference between the indoor temperature and the set temperature. If the difference is larger, the indoor temperature is far from the temperature expected by the user, and at the moment, the refrigeration requirement is larger; if the difference is small, it indicates that the indoor temperature is close to the temperature desired by the user, and at this time, the cooling demand is small.
The air conditioner obtains a difference value between the indoor temperature and the set temperature after judging that the surface of the indoor heat exchanger is frosted through power, then judges whether the difference value is larger than or equal to a preset difference value, if the difference value is larger than the preset difference value, the air conditioner indicates that the refrigeration demand of a user on the air conditioner is large, the air conditioner cannot close the compressor to stop refrigeration, at the moment, the air conditioner can increase the rotating speed value of an indoor fan, the frosting phenomenon or the frosting trend of the indoor heat exchanger is relieved, and when the difference value between the indoor temperature and the set temperature is smaller than the preset difference value, the compressor is controlled to stop; if the difference value is smaller than the preset difference value, the refrigeration requirement of the user on the air conditioner is smaller, and at the moment, the compressor is controlled to stop to avoid frosting of the indoor heat exchanger or defrosting of the indoor heat exchanger.
The invention also provides an air conditioner, which comprises a memory, a processor and a control program of the air conditioner, wherein the control program of the air conditioner is stored in the memory and can be operated on the processor, and when the control program of the air conditioner is executed by the processor, the steps of the control method of the air conditioner are realized.
The present invention also provides a computer-readable storage medium storing a control program of an air conditioner, which when executed by a processor, implements the respective steps of the control program of the air conditioner as described in the above embodiments.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A control method of an air conditioner is characterized by comprising the following steps:
detecting working parameters of a compressor of the air conditioner in a refrigeration mode, wherein the working parameters comprise the running power or the input current of the compressor;
and controlling the air conditioner to execute preset operation to defrost the indoor heat exchanger when the working parameter is smaller than a preset threshold value.
2. The control method of an air conditioner according to claim 1, wherein the preset operation includes controlling a compressor to be stopped, and after the step of controlling the air conditioner to perform the preset operation, further comprising:
determining the interval of the working parameters;
determining a target shutdown time length of the compressor according to the interval, wherein the smaller the interval is, the longer the target shutdown time length is;
and controlling the compressor to stop for the target stop time period and then starting.
3. The method for controlling an air conditioner according to claim 1, wherein the step of detecting an operating parameter of a compressor of the air conditioner in a cooling mode is followed by further comprising:
determining an interval where the working parameter is located and a first duration of the working parameter in the interval, wherein the maximum working parameter in the interval where the working parameter is located is smaller than a preset threshold value;
and when the first duration reaches a first preset duration corresponding to the interval, controlling the air conditioner to execute a preset operation step.
4. The method for controlling an air conditioner according to claim 1, wherein the step of detecting an operating parameter of a compressor of the air conditioner in a cooling mode is followed by further comprising:
the working parameter is smaller than a preset threshold value, and a second duration of the working parameter smaller than the preset threshold value is obtained;
and when the second duration reaches a second preset duration, executing the step of controlling the air conditioner to execute preset operation.
5. The control method of an air conditioner according to claim 1, wherein the preset operation includes at least one of:
controlling the compressor to stop;
and outputting the frosting prompt information of the indoor heat exchanger.
6. The control method of an air conditioner according to claim 5, wherein a wind speed value of an indoor fan of the air conditioner during a stop of the compressor is greater than a first preset wind speed value.
7. The control method of an air conditioner according to any one of claims 1 to 6, further comprising:
the method comprises the steps that an air conditioner operates in a refrigeration mode, and reference parameters are obtained, wherein the reference parameters comprise outdoor temperature, indoor temperature and a wind speed value of an indoor fan;
and the step of detecting the working parameters of the compressor of the air conditioner in the refrigeration mode is executed when the reference parameters meet preset conditions.
8. The control method of an air conditioner according to claim 7, wherein the preset condition includes at least one of:
the outdoor temperature is less than the preset outdoor temperature, and the indoor temperature is less than the preset indoor temperature;
the air speed value of the indoor fan is smaller than a second preset air speed value;
the duration that the wind speed value of the indoor fan is smaller than the second preset wind speed value is longer than the third preset duration.
9. An air conditioner, characterized in that the air conditioner comprises a memory, a processor, and a control program of the air conditioner stored in the memory and executable on the processor, the control program of the air conditioner, when executed by the processor, implementing the steps of the control method of the air conditioner according to any one of claims 1 to 8.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a control program of an air conditioner, which when executed by a processor, implements the steps of the control method of the air conditioner according to any one of claims 1 to 8.
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| CN110631210B (en) | 2021-07-16 |
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