CN111706974B - Control method of air conditioner, air conditioner and storage medium - Google Patents
Control method of air conditioner, air conditioner and storage medium Download PDFInfo
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- CN111706974B CN111706974B CN202010510487.3A CN202010510487A CN111706974B CN 111706974 B CN111706974 B CN 111706974B CN 202010510487 A CN202010510487 A CN 202010510487A CN 111706974 B CN111706974 B CN 111706974B
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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
- F24F11/50—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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- 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
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
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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
Abstract
The invention discloses a control method of an air conditioner, which comprises the following steps: when the temperature of an indoor heat exchanger of the air conditioner is detected to be greater than or equal to the high-temperature protection temperature, increasing the rotating speed of an indoor fan of the air conditioner and/or reducing the rotating speed of an outdoor fan of the air conditioner; detecting the temperature of the indoor heat exchanger; judging whether the temperature of the indoor heat exchanger is greater than or equal to the high-temperature protection temperature or not; and when the temperature of the indoor heat exchanger is greater than or equal to the high-temperature protection temperature, reducing the operating frequency of a compressor of the air conditioner. The invention also discloses an air conditioner and a storage medium. The invention can gradually reduce the temperature of the refrigerant by increasing the heat radiation of the indoor heat exchanger and reducing the heat absorption of the outdoor heat exchanger and/or the heating of the compressor, thereby reducing the restarting times of the compressor and better maintaining the stability of the indoor environment temperature.
Description
Technical Field
The present invention relates to the field of air conditioners, and in particular, to a control method for an air conditioner, and a storage medium.
Background
Air conditioners for heating in winter, especially at high outdoor temperatures, e.g. 10-20oC, the indoor heat exchanger is easily triggered to reach high-temperature protection temperature. In order to avoid burning out the indoor heat exchanger, the indoor heat exchanger is protected by turning off the compressor, but frequent restart of the compressor and unstable indoor temperature are easily caused.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The embodiment of the invention mainly aims to provide a control method of an air conditioner, and aims to solve the technical problem that the indoor temperature of the air conditioner is unstable when the air conditioner heats in the prior art.
In order to solve the above problem, an embodiment of the present invention provides a method for controlling an air conditioner, including:
when the temperature of an indoor heat exchanger of the air conditioner is detected to be greater than or equal to the high-temperature protection temperature, increasing the rotating speed of an indoor fan of the air conditioner and/or reducing the rotating speed of an outdoor fan of the air conditioner;
detecting the temperature of the indoor heat exchanger;
judging whether the temperature of the indoor heat exchanger is greater than or equal to the high-temperature protection temperature or not;
and when the temperature of the indoor heat exchanger is greater than or equal to the high-temperature protection temperature, reducing the operating frequency of a compressor of the air conditioner.
Optionally, after the step of detecting the temperature of the indoor heat exchanger is executed at regular time and the step of judging whether the temperature of the indoor heat exchanger is greater than or equal to the high-temperature protection temperature is executed, the method for controlling the air conditioner includes the following steps:
when the temperature of the indoor heat exchanger is greater than or equal to the high-temperature protection temperature, judging whether the current running frequency of the compressor is greater than a first preset frequency;
when the current running frequency of the compressor is greater than the first preset frequency, executing the step of reducing the running frequency of the compressor of the air conditioner;
and when the current running frequency of the compressor is less than or equal to the first preset frequency, closing the compressor.
Optionally, after the step of turning off the compressor, the control method of the air conditioner further includes:
when the restarting condition of the compressor is met, starting the compressor according to a second preset frequency;
detecting the temperature of the indoor heat exchanger;
when the temperature of the indoor heat exchanger is lower than the high-temperature protection temperature, the operating frequency of the compressor is increased in a stepped mode according to a first preset time interval until the operating frequency reaches a third preset frequency, wherein the third preset frequency is higher than the second preset frequency and the first preset frequency;
detecting a temperature of the indoor heat exchanger during increasing an operation frequency of the compressor;
and when the temperature of the indoor heat exchanger is detected to be greater than or equal to the high-temperature protection temperature, executing the step of increasing the rotating speed of an indoor fan of the air conditioner and/or reducing the rotating speed of an outdoor fan of the air conditioner.
Alternatively,
after the step of determining whether the temperature of the indoor heat exchanger is greater than or equal to the high-temperature protection temperature, the control method of the air conditioner further includes:
and when the temperature of the indoor heat exchanger is lower than the high-temperature protection temperature, returning to execute the step of increasing the operation frequency of the compressor in a stepped manner according to a first preset time interval until the operation frequency reaches a third preset frequency, wherein when the temperature of the indoor heat exchanger is higher than or equal to the high-temperature protection temperature, the step of increasing the operation frequency of the compressor in a stepped manner according to the first preset time interval is stopped.
Optionally, after the step of detecting the temperature of the indoor heat exchanger during the operation frequency of the compressor is increased, the method further includes:
when the temperature of the indoor heat exchanger is detected to be greater than or equal to the high-temperature protection temperature, acquiring the stepped frequency increasing times;
when the stepped up-frequency times are smaller than preset times, executing the step of increasing the rotating speed of an indoor fan of the air conditioner and/or reducing the rotating speed of an outdoor fan of the air conditioner;
and when the stepped frequency rising times are larger than or equal to the preset times, the running frequency of the compressor is reduced in a stepped mode according to a second preset time interval until the running frequency reaches a fourth preset frequency.
Optionally, after the step of reducing the operating frequency of the compressor at a second preset time interval until the operating frequency reaches a fourth preset frequency, the method further includes:
when the temperature of the indoor heat exchanger is detected to be greater than or equal to the high-temperature protection temperature, the operation frequency of the compressor is reduced in a stepped mode according to a third preset time interval until the operation frequency reaches the first preset frequency, and the fourth preset frequency is greater than the first preset frequency.
Optionally, after the step of reducing the operating frequency of the compressor in a stepwise manner at a third preset time interval until the operating frequency reaches the first preset frequency, the method further includes:
and when the temperature of the indoor heat exchanger is detected to be greater than or equal to the high-temperature protection temperature, the step of turning off the compressor is executed.
Optionally, the step of increasing the rotation speed of the indoor fan of the air conditioner and/or decreasing the rotation speed of the outdoor fan of the air conditioner comprises:
acquiring the motor type of the outdoor fan;
if the motor type is a direct current motor, increasing the rotating speed and/or the rotating speed of the indoor fan
Reducing the rotating speed of the outdoor fan;
and if the motor type is an alternating current motor, increasing the rotating speed of the indoor fan.
In addition, to solve the above problem, an embodiment of the present invention further provides an air conditioner, where the air conditioner includes a processor, a memory, and a control program of the air conditioner that is stored in the memory and is executable on the processor, and the control program of the air conditioner implements the steps of the control method of the air conditioner as described above when executed by the processor.
An embodiment of the present invention further provides a computer-readable storage medium, where a control program of an air conditioner is stored on the computer-readable storage medium, and when the control program of the air conditioner is executed by a processor, the steps of the control method of the air conditioner are implemented as described above.
The control method of the air conditioner provided by the embodiment of the invention has the beneficial effects that the stability of the indoor environment temperature can be well maintained by reducing the rotating speed of the indoor fan and/or increasing the rotating speed of the outdoor fan, if the rotating speed of the indoor fan and the rotating speed of the outdoor fan are adjusted, the temperature of the indoor heat exchanger is still greater than or equal to the high-temperature protection temperature, the running frequency of the compressor is reduced, the indoor heat exchanger is prevented from being burnt out due to untimely temperature reduction, the refrigerant temperature is gradually reduced by increasing the heat dissipation of the indoor heat exchanger, reducing the heat absorption of the outdoor heat exchanger and/or the heating of the compressor, the frequency of restarting the compressor is further reduced, and the stability of the indoor environment temperature can be well maintained.
Drawings
Fig. 1 is a schematic terminal structure diagram of a hardware operating environment 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 schematic flow chart of a control method of an air conditioner according to a second embodiment of the present invention;
fig. 4 is a schematic flow chart of a control method of an air conditioner according to a third embodiment of the present invention;
fig. 5 is a flowchart illustrating a control method of an air conditioner according to a fourth embodiment of 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 detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention.
The execution main body of the embodiment of the invention can be an air conditioner.
As shown in fig. 1, the air conditioner may include: a processor 1001, such as a CPU, a communication bus 1002, and a memory 1003. The communication bus 1002 is used for realizing connection communication among the components. The memory 1003 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1003 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration of the air conditioner shown in fig. 1 is not intended to be limiting, and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, the memory 1003, which is a kind of computer storage medium, may include an operating system and a control program of the air conditioner.
Based on the structure of the air conditioner, a first embodiment of the present invention is provided, and referring to fig. 2, fig. 2 is a schematic flow chart of the first embodiment of the control method of the air conditioner of the present invention, and the control method of the air conditioner includes the following steps:
step S100, when the temperature of an indoor heat exchanger of the air conditioner is detected to be greater than or equal to a high-temperature protection temperature, increasing the rotating speed of an indoor fan of the air conditioner and/or reducing the rotating speed of an outdoor fan of the air conditioner;
step S200, detecting the temperature of the indoor heat exchanger;
step S300, judging whether the temperature of the indoor heat exchanger is greater than or equal to the high-temperature protection temperature;
and S400, when the temperature of the indoor heat exchanger is greater than or equal to the high-temperature protection temperature, reducing the operating frequency of a compressor of the air conditioner.
In this embodiment, the air conditioner is an inverter air conditioner, and the operation frequency of the compressor can be adjusted to control the cooling or heating efficiency.
When the air conditioner is in a heating mode, the temperature of the indoor heat exchanger is easy to reach high-temperature protection temperature due to high outdoor temperature. The high temperature protection temperature is determined by the characteristics of the indoor heat exchanger, and can be kept positive by the indoor heat exchangerMaximum temperature under normal operating conditions, e.g. 56oC. A high-temperature protection mechanism is arranged to prevent the indoor heat exchanger from being burnt out due to overhigh temperature.
The temperature of the indoor heat exchanger may be a pipe temperature of the indoor heat exchanger. The air conditioner detects the temperature of the indoor heat exchanger in real time through the temperature sensor in the running process, and when the temperature of the indoor heat exchanger is larger than or equal to the high-temperature protection temperature, a high-temperature protection mechanism of the air conditioner is started.
And when the temperature of the indoor heat exchanger is greater than or equal to the high-temperature protection temperature, increasing the rotating speed of an indoor fan of the air conditioner and/or reducing the rotating speed of an outdoor fan of the air conditioner.
Alternatively, the rotation speed of the indoor fan may be increased alone, or the rotation speed of the outdoor fan may be decreased alone; the rotating speed of the indoor fan can be increased firstly, and then the rotating speed of the outdoor fan is reduced; the rotation speed of the outdoor fan may be reduced first, and then the rotation speed of the indoor fan may be increased, which is not limited herein.
It can be understood that increasing the rotating speed of the indoor fan can increase the heat release of the air to the indoor heat exchanger, so as to reduce the temperature of the indoor heat exchanger, and further reduce the temperature of the refrigerant; the rotating speed of the outdoor fan is reduced, the refrigerant gasification can be reduced, and the heat absorption is reduced, so that the temperature of the outdoor heat exchanger is reduced, and the temperature of the refrigerant is further reduced. Because the air conditioner belongs to a system, when the temperature of the refrigerant in the outdoor heat exchanger is reduced, the temperature of the whole refrigerant can be reduced.
It should be noted that, by increasing the rotation speed of the indoor fan or decreasing the rotation speed of the outdoor fan, the temperature of the refrigerant in the indoor heat exchanger can be decreased, the stability of the indoor environment temperature can be maintained, and the fluctuation of the indoor environment temperature can be reduced.
As an alternative implementation, step S100 includes:
acquiring the motor type of the outdoor fan;
if the motor type is a direct current motor, increasing the rotating speed of the indoor fan and/or reducing the rotating speed of the outdoor fan;
and if the motor type is an alternating current motor, increasing the rotating speed of the indoor fan.
The motor type of the outdoor fan may include a dc motor as well as an ac motor. When the motor type of the outdoor fan is a direct current motor, the rotating speed of the outdoor fan can be adjusted according to the requirement; when the motor type of the outdoor fan is an alternating current motor, the rotating speed of the outdoor fan is a fixed value.
When the motor type is a direct current motor, the rotating speed of the indoor fan can be increased, and/or the rotating speed of the outdoor fan can be reduced; when the motor type is an alternating current motor, only the rotating speed of the indoor fan is increased. And adjusting the rotating speed of the fan according to the type of the outdoor fan so as to change the high-temperature protection state of the indoor heat exchanger to the maximum extent by adjusting the rotating speed of the fan.
If the rotating speed of the indoor and outdoor fans is adjusted, the temperature of the indoor heat exchanger is detected to be still greater than or equal to the high-temperature protection temperature, and the running frequency of the compressor is reduced.
Optionally, after the rotating speed of the indoor and outdoor fans is adjusted for a period of time, the temperature of the indoor heat exchanger is detected.
Alternatively, the operating frequency of the compressor may be decreased or increased per unit time, such as 1HZ/s, or the operating frequency of the compressor may be decreased or increased by decreasing or increasing the amplitude of the operating frequency of the compressor every first predetermined time interval, such as 2HZ every 5s, or the operating frequency of the compressor may be decreased or increased by an increasing or decreasing amplitude of the frequency.
It can be understood that the temperature of the refrigerant in the indoor heat exchanger can be obviously reduced by reducing the operating frequency of the compressor, and the effect of rapid cooling is realized, so that the temperature of the indoor heat exchanger is lower than the high-temperature protection temperature as soon as possible.
In this embodiment, the stability of the indoor environment temperature can be better maintained by firstly reducing the rotation speed of the indoor fan and/or increasing the rotation speed of the outdoor fan, if the rotation speed of the indoor and outdoor fans is adjusted, the temperature of the indoor heat exchanger is still greater than or equal to the high-temperature protection temperature, the operation frequency of the compressor is reduced, the indoor heat exchanger is prevented from being burnt out due to untimely cooling, the refrigerant temperature is gradually reduced by increasing the heat dissipation of the indoor heat exchanger, reducing the heat absorption of the outdoor heat exchanger and/or the heating of the compressor, and meanwhile, the stability of the indoor environment temperature can be better maintained.
Based on the first embodiment, referring to fig. 3, fig. 3 is a schematic flow chart of a control method of an air conditioner according to a second embodiment of the present invention, and after step S300, the method further includes:
step S500, when the temperature of the indoor heat exchanger is greater than or equal to the high-temperature protection temperature, judging whether the current running frequency of the compressor is greater than a first preset frequency;
when the current operating frequency of the compressor is greater than the first preset frequency, executing step S400;
and step S600, when the current running frequency of the compressor is less than or equal to the first preset frequency, closing the compressor.
The temperature of the heat exchanger of the indoor unit of the air conditioner is detected at regular time, wherein the regular time refers to the detection of the temperature of the heat exchanger of the indoor unit of the air conditioner according to a preset time interval, and the preset time interval can be set by a designer.
When the temperature of the indoor heat exchanger is greater than or equal to the high-temperature protection temperature, whether the frequency of the compressor is greater than a first preset frequency or not is judged, wherein the first preset frequency can be set by a designer and can be the lowest frequency of the running of the compressor.
Optionally, the first preset frequency may be adjusted according to the outdoor ambient temperature. The designer may previously acquire a mapping curve between the outdoor ambient temperature and the first preset frequency. And acquiring a first preset frequency corresponding to the outdoor environment temperature according to the mapping curve.
And when the current running frequency of the compressor is greater than the first preset frequency, reducing the running frequency of the compressor. It is understood that the present embodiment reduces the operation frequency of the compressor at preset time intervals, that is, reduces the operation frequency of the compressor once every preset time interval. Therefore, the running frequency of the compressor can be gradually reduced to slowly reduce the indoor environment temperature and reduce the fluctuation of the indoor environment temperature.
And when the indoor heat exchanger is lower than the high-temperature protection temperature, stopping reducing the running frequency of the compressor.
And when the current running frequency of the compressor is less than or equal to the first preset frequency, closing the compressor. It can be understood that when the operating frequency of the compressor is reduced to a lower operating frequency and the temperature of the indoor heat exchanger is still greater than or equal to the high-temperature protection temperature, it indicates that the effect of reducing the temperature of the refrigerant in the indoor heat exchanger cannot be achieved by reducing the operating frequency of the compressor, and the compressor is turned off to better reduce the temperature of the indoor heat exchanger so as to protect the indoor heat exchanger.
In this embodiment, whether the current operating frequency of the compressor is greater than the first preset frequency or not is judged, the compressor is controlled to gradually reduce the operating frequency of the compressor or close the compressor, the operating frequency of the compressor is gradually reduced, the indoor environment temperature can be slowly reduced, the sudden drop of the indoor environment temperature is avoided, the stability of the indoor environment temperature is maintained, the compressor is closed to prevent the indoor heat exchanger from being burnt out, and the beneficial effect of timely protecting the indoor heat exchanger is achieved.
Based on the second embodiment, referring to fig. 4, fig. 4 is a flowchart illustrating a control method of an air conditioner according to a third embodiment of the present invention, and after step S600, the method further includes:
step S700, when the compressor restarting condition is met, starting the compressor according to a second preset frequency;
step S800, detecting the temperature of the indoor heat exchanger;
step S900, when the temperature of the indoor heat exchanger is lower than the high-temperature protection temperature, increasing the operating frequency of the compressor in a stepped manner according to a first preset time interval until the operating frequency reaches a third preset frequency, wherein the third preset frequency is higher than the second preset frequency and the first preset frequency;
step S1000, detecting the temperature of the indoor heat exchanger in the process of increasing the running frequency of the compressor;
and executing step S100 when the temperature of the indoor heat exchanger is detected to be greater than or equal to the high-temperature protection temperature.
The restart condition of the compressor means that the temperature of the indoor heat exchanger is lower thanAt the release temperature of the high-temperature protection, e.g. 50oAnd C, wherein the release temperature of the high-temperature protection can be equal to or less than the high-temperature protection temperature. And after the compressor is restarted, when the restarting condition of the compressor is met, starting the compressor according to a second preset frequency. Wherein the second preset frequency is set by a designer and may be the lowest operating frequency of the compressor.
Optionally, the second preset frequency may be adjusted according to the outdoor ambient temperature. The designer may previously detect a mapping curve between the outdoor ambient temperature and the second preset frequency. And when the temperature of the indoor heat exchanger is greater than or equal to the high-temperature protection temperature, acquiring a mapping curve between the outdoor environment temperature and the running frequency of the compressor. The second preset frequency may be obtained according to the outdoor ambient temperature.
The air conditioner can detect the temperature of the indoor heat exchanger in real time, and when the temperature of the indoor heat exchanger is lower than the high-temperature protection temperature, the running frequency of the compressor is increased in a stepped mode according to a first preset time interval. The first preset time interval can be set by a designer according to requirements, such as 20 seconds.
The running frequency of the compressor is increased in a step mode, sudden rising of indoor environment temperature can be avoided, and stability of the indoor environment temperature is maintained. The operation frequency of the compressor cannot be infinitely increased, and can only be increased to a third preset frequency of the compressor, wherein the third preset frequency can be the maximum operation frequency of the compressor, and the third preset frequency is greater than the second preset frequency and is also greater than the first preset frequency. Optionally, the third preset frequency may be adjusted according to the outdoor ambient temperature. The designer may previously detect a mapping curve between the outdoor ambient temperature and the third preset frequency. And when the temperature of the indoor heat exchanger is greater than or equal to the high-temperature protection temperature, acquiring a mapping curve between the outdoor environment temperature and the running frequency of the compressor. The third preset frequency may be obtained according to the outdoor ambient temperature.
The temperature of the indoor heat exchanger is detected during the process of increasing the operating frequency of the compressor. When the temperature of the indoor heat exchanger is greater than or equal to the high-temperature protection temperature, stopping increasing the running frequency of the compressor in a stepped mode according to a first preset time interval, and increasing the rotating speed of the indoor unit and/or reducing the rotating speed of the outdoor unit so as to remove the high-temperature protection state of the indoor heat exchanger.
As an optional implementation manner, after step S300, the method further includes:
and when the temperature of the indoor heat exchanger is lower than the high-temperature protection temperature, returning to execute the step S900.
When the temperature of the indoor heat exchanger is detected to be greater than or equal to the high-temperature protection temperature, the operation frequency of the compressor is stopped to be increased in a stepped mode according to a first preset time interval. After the rotating speed of the indoor fan is increased and/or the rotating speed of the outdoor fan is reduced, whether the temperature of the indoor heat exchanger is larger than or equal to the high-temperature protection temperature or not is judged, and when the temperature of the indoor heat exchanger is smaller than the high-temperature protection temperature, the operation frequency of the compressor is increased in a stepped mode according to a first preset time interval. Thus, the indoor environment temperature can be quickly adjusted to the set temperature of the user.
In this embodiment, after the compressor is restarted, the compressor is operated at a lower operating frequency, and when the temperature of the indoor heat exchanger is lower than the high-temperature protection temperature, the operating frequency of the compressor is increased in a stepwise manner, so that sudden rise of the indoor environment temperature can be avoided, the stability of the indoor environment temperature can be maintained, and meanwhile, the indoor environment temperature can be rapidly adjusted to the temperature set by a user by increasing the operating frequency of the compressor; in the process of increasing the operating frequency of the compressor, when the temperature of the indoor heat exchanger is greater than or equal to the high-temperature protection temperature, the rotating speed of the indoor fan is increased and/or the rotating speed of the outdoor fan is reduced, so that the beneficial effect of the high-temperature protection state of the indoor heat exchanger is removed.
Based on the third embodiment, referring to fig. 5, fig. 5 is a schematic flowchart related to a fourth embodiment of the method for controlling an air conditioner according to the present invention, and after step S1000, the method for controlling an air conditioner further includes:
step S1100, when the temperature of the indoor heat exchanger is detected to be greater than or equal to the high-temperature protection temperature, acquiring the stepped frequency increasing times;
step S1200, when the stepped frequency rising times are smaller than preset times, increasing the rotating speed of an indoor fan of the air conditioner and/or reducing the rotating speed of an outdoor fan of the air conditioner;
and step S1300, when the stepped up-frequency is greater than or equal to the preset frequency, the operation frequency of the compressor is reduced in a stepped mode according to a second preset time interval until the operation frequency reaches a fourth preset frequency.
In the process of increasing the operating frequency of the compressor, when the temperature of the indoor heat exchanger is detected to be greater than or equal to the high-temperature protection temperature, the stepped frequency increasing times are obtained. The process from increasing the running frequency of the compressor to the temperature of the indoor heat exchanger being greater than or equal to the high-temperature protection temperature is a one-step frequency increasing number. Optionally, the air conditioner updates the stepped up-frequency number after the stepped up-frequency number once.
Optionally, the stepped up frequency is reset when the air conditioner is powered off.
And when the stepped frequency increasing times are less than the preset times, increasing the rotating speed of the indoor fan and/or reducing the rotating speed of the outdoor fan. Wherein the preset number of times can be set by a designer, such as 1 time. Alternatively, the preset number of times may be a number of times that the rotation speeds of the indoor and outdoor fans can be adjusted. Since increasing the rotational speed of the indoor fan increases noise, the air conditioner may limit the rotational speed of the indoor fan.
And when the stepped frequency rising times are larger than or equal to the preset times, the running frequency of the compressor is reduced in a stepped mode until reaching a fourth preset frequency according to a second preset time interval. The second predetermined time interval may be set by a designer, for example, 20 seconds, and may be the same as the first predetermined time interval.
The fourth preset frequency can be set by a designer, or can be an operating frequency corresponding to the temperature of the indoor heat exchanger in the first frequency increasing process when the temperature is greater than or equal to the high-temperature protection temperature after the compressor is restarted, wherein the fourth preset frequency is greater than the first preset frequency and is also greater than the second preset frequency.
Optionally, when the temperature of the indoor heat exchanger is detected to be lower than the high-temperature protection temperature, the compressor is controlled to operate according to a third preset frequency.
As an optional implementation manner, after step S1300, the method further includes:
when the temperature of the indoor heat exchanger is detected to be greater than or equal to the high-temperature protection temperature, the operation frequency of the compressor is reduced in a stepped mode according to a third preset time interval until the operation frequency reaches a first preset frequency, and the fourth preset frequency is greater than the first preset frequency.
After the frequency of the compressor is reduced to a fourth preset frequency, the temperature of the indoor heat exchanger is still larger than or equal to the high-temperature protection temperature, and the running frequency of the compressor is reduced in a stepped mode until the running frequency reaches the first preset frequency according to a third preset time interval. The third preset time interval may be set by the designer, for example, 20 seconds, and may be the same as the second preset time interval.
The operation frequency of the compressor is reduced to a lower operation frequency to release the high temperature protection state of the indoor heat exchanger.
Further, after the step of reducing the operating frequency of the compressor in a stepwise manner at a third preset time interval until the operating frequency reaches the first preset frequency, the method further includes:
and when the temperature of the indoor heat exchanger is detected to be greater than or equal to the high-temperature protection temperature, the step of turning off the compressor is executed.
And after the operating frequency of the compressor is reduced to a first preset frequency, the temperature of the indoor heat exchanger is still greater than or equal to the high-temperature protection temperature, and the compressor is closed. Wherein the fourth preset frequency is greater than the first preset frequency.
In this embodiment, at the in-process of the operating frequency of increase compressor, when detecting that indoor heat exchanger's temperature is greater than or equal to high temperature protection temperature, carry out corresponding step according to cascaded number of times of raising the frequency, can adjust the rotational speed of indoor outer fan to suitable rotational speed, avoid the noise too big, reduce the operating frequency of compressor and can realize the beneficial effect of removing indoor heat exchanger's high temperature protection state fast.
In addition, an embodiment of the present invention further provides an air conditioner, where the air conditioner includes a processor, a memory, and a control program of the air conditioner that is stored on the memory and is executable on the processor, and when the control program of the air conditioner is executed by the processor, the content of the embodiment of the control method of the air conditioner as described above is implemented.
An embodiment of the present invention further provides a computer-readable storage medium, where a control program of an air conditioner is stored on the computer-readable storage medium, and when the control program of the air conditioner is executed by a processor, the content of the embodiment of the control method of the air conditioner is implemented as described above.
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 substantially or partially embodied in the form of a software product, which is stored in a computer-readable storage medium (such as ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling an air conditioner (such as 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 (9)
1. A control method of an air conditioner is characterized by comprising the following steps:
when the temperature of an indoor heat exchanger of the air conditioner is detected to be greater than or equal to the high-temperature protection temperature, increasing the rotating speed of an indoor fan of the air conditioner and/or reducing the rotating speed of an outdoor fan of the air conditioner;
detecting the temperature of the indoor heat exchanger;
judging whether the temperature of the indoor heat exchanger is greater than or equal to the high-temperature protection temperature or not;
when the temperature of the indoor heat exchanger is greater than or equal to the high-temperature protection temperature, reducing the operating frequency of a compressor of the air conditioner, and judging whether the current operating frequency of the compressor is greater than a first preset frequency;
when the current running frequency of the compressor is less than or equal to the first preset frequency, closing the compressor;
after the step of turning off the compressor, the control method of the air conditioner further includes:
when the restarting condition of the compressor is met, starting the compressor according to a second preset frequency;
detecting the temperature of the indoor heat exchanger;
when the temperature of the indoor heat exchanger is detected to be greater than or equal to the high-temperature protection temperature, acquiring the stepped frequency increasing times;
when the stepped up-frequency times are smaller than preset times, executing the step of increasing the rotating speed of an indoor fan of the air conditioner and/or reducing the rotating speed of an outdoor fan of the air conditioner;
and when the stepped frequency rising times are larger than or equal to the preset times, the running frequency of the compressor is reduced in a stepped mode according to a second preset time interval until the running frequency reaches a fourth preset frequency.
2. The control method of an air conditioner according to claim 1, wherein the step of detecting the temperature of the indoor heat exchanger is performed periodically, and after the step of determining whether the temperature of the indoor heat exchanger is greater than or equal to the high temperature protection temperature, the control method of an air conditioner includes the steps of:
and when the current running frequency of the compressor is greater than the first preset frequency, executing the step of reducing the running frequency of the compressor of the air conditioner.
3. The control method of an air conditioner according to claim 2, wherein after the step of turning off the compressor, the control method of an air conditioner further comprises:
when the temperature of the indoor heat exchanger is lower than the high-temperature protection temperature, the operating frequency of the compressor is increased in a stepped mode according to a first preset time interval until the operating frequency reaches a third preset frequency, wherein the third preset frequency is higher than the second preset frequency and the first preset frequency;
detecting a temperature of the indoor heat exchanger during increasing an operation frequency of the compressor;
and when the temperature of the indoor heat exchanger is detected to be greater than or equal to the high-temperature protection temperature, executing the step of increasing the rotating speed of an indoor fan of the air conditioner and/or reducing the rotating speed of an outdoor fan of the air conditioner.
4. The control method of an air conditioner according to claim 3, wherein after the step of determining whether the temperature of the indoor heat exchanger is greater than or equal to the high temperature protection temperature, the control method of an air conditioner further comprises:
and when the temperature of the indoor heat exchanger is lower than the high-temperature protection temperature, returning to execute the step of increasing the operation frequency of the compressor in a stepped manner according to a first preset time interval until the operation frequency reaches a third preset frequency, wherein when the temperature of the indoor heat exchanger is higher than or equal to the high-temperature protection temperature, the step of increasing the operation frequency of the compressor in a stepped manner according to the first preset time interval is stopped.
5. The method for controlling an air conditioner according to claim 1, wherein after the step of decreasing the operation frequency of the compressor at second preset time intervals until the operation frequency reaches a fourth preset frequency, further comprising:
when the temperature of the indoor heat exchanger is detected to be greater than or equal to the high-temperature protection temperature, the operation frequency of the compressor is reduced in a stepped mode according to a third preset time interval until the operation frequency reaches the first preset frequency, and the fourth preset frequency is greater than the first preset frequency.
6. The method for controlling an air conditioner according to claim 5, wherein after the step of stepwise decreasing the operating frequency of the compressor at third preset time intervals until the operating frequency reaches the first preset frequency, further comprising:
and when the temperature of the indoor heat exchanger is detected to be greater than or equal to the high-temperature protection temperature, the step of turning off the compressor is executed.
7. The control method of an air conditioner according to claim 1, wherein the step of increasing the rotation speed of an indoor fan of the air conditioner and/or decreasing the rotation speed of an outdoor fan of the air conditioner comprises:
acquiring the motor type of the outdoor fan;
if the motor type is a direct current motor, increasing the rotating speed of the indoor fan and/or reducing the rotating speed of the outdoor fan;
and if the motor type is an alternating current motor, increasing the rotating speed of the indoor fan.
8. An air conditioner, characterized in that the air conditioner comprises a processor, a memory, and a control program of the air conditioner stored on the memory and executable on the processor, the control program of the air conditioner realizing the steps of the control method of the air conditioner according to any one of claims 1 to 7 when executed by the processor.
9. A computer-readable storage medium, characterized in that a control program of an air conditioner is stored thereon, 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 7.
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| CN113551365B (en) * | 2021-07-30 | 2022-09-27 | 佛山市顺德区美的电子科技有限公司 | Air conditioner, control method thereof, and computer-readable storage medium |
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| US11815280B2 (en) * | 2022-01-31 | 2023-11-14 | Mitsubishi Electric Us, Inc. | System and method for controlling the operation of a fan in an air conditioning system |
| CN114738947A (en) * | 2022-03-28 | 2022-07-12 | 青岛海尔空调器有限总公司 | Air conditioner control method and air conditioner |
| CN115789890A (en) * | 2022-12-05 | 2023-03-14 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device and air conditioner |
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