CN115540178B - Air conditioner control method and air conditioner - Google Patents
Air conditioner control method and air conditioner Download PDFInfo
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- CN115540178B CN115540178B CN202210993472.6A CN202210993472A CN115540178B CN 115540178 B CN115540178 B CN 115540178B CN 202210993472 A CN202210993472 A CN 202210993472A CN 115540178 B CN115540178 B CN 115540178B
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- 238000000034 method Methods 0.000 title claims abstract description 69
- 238000005057 refrigeration Methods 0.000 claims description 9
- 230000000630 rising effect Effects 0.000 claims description 2
- 239000003507 refrigerant Substances 0.000 description 33
- 238000004590 computer program Methods 0.000 description 6
- 125000004122 cyclic group Chemical group 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioners, in particular to an air conditioner control method and an air conditioner, and aims to solve the problem that oil return of a compressor in an existing air conditioner is not in place. For this purpose, the air conditioner control method of the present invention comprises the steps of: controlling the air conditioner to raise the frequency in a preset raising frequency mode; in the process that the frequency of the air conditioner is increased to the target frequency, the electronic expansion valve of the air conditioner is controlled to be opened and closed for a preset number of times in a circulating way and/or low-frequency vibration is applied to the evaporator of the air conditioner. The air conditioner control method can improve the oil return precision of the compressor in the air conditioner, thereby improving the oil return performance of the air conditioner.
Description
Technical Field
The invention relates to the technical field of air conditioners, and particularly provides an air conditioner control method and an air conditioner.
Background
The air conditioner is easily affected by the ambient temperature in the low-temperature refrigeration mode, for example, when the external ambient temperature is too high or too low, the oil return effect of the compressor in the air conditioner is poor, so that the lubrication effect of the compressor is affected, and the service life of the compressor is further affected.
Accordingly, there is a need in the art for a new air conditioner control method to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to solve the technical problems, namely the problem that the oil return of a compressor in the existing air conditioner is not in place.
To this end, a first aspect of the present invention provides an air conditioner control method comprising the steps of:
Controlling the air conditioner to raise the frequency in a preset raising frequency mode;
And in the process that the frequency of the air conditioner is increased to the target frequency, controlling the electronic expansion valve of the air conditioner to be cyclically opened and closed for preset times and/or applying low-frequency vibration to the evaporator of the air conditioner.
In the preferred technical scheme of the air conditioner control method, the controlling the electronic expansion valve of the air conditioner to be cyclically opened and closed for a preset number of times includes:
controlling the opening of the electronic expansion valve to be the maximum opening, and running for a first preset time;
After the first preset time, closing the electronic expansion valve;
and controlling the opening of the electronic expansion valve to be the minimum opening, and running for a second preset time.
In the preferable technical scheme of the air conditioner control method, the preset times are more than or equal to five times.
In a preferred embodiment of the above air conditioner control method, the evaporator of the air conditioner is provided with a low-frequency vibration device, and the applying low-frequency vibration to the evaporator of the air conditioner includes: and applying low-frequency vibration to the evaporator of the air conditioner through the low-frequency vibration equipment.
In the preferable technical scheme of the air conditioner control method, the humidifying or dehumidifying amount of the fresh air is adjusted in real time according to the absolute value of the difference value through the humidifying device.
In a preferred technical solution of the above air conditioner control method, the control method further includes:
And controlling the rotating speed of the indoor unit fan of the air conditioner to be larger than a preset rotating speed in the process that the frequency of the air conditioner is increased to the target frequency.
In a preferred technical solution of the above air conditioner control method, the control method further includes:
And after the frequency of the air conditioner reaches the target frequency, maintaining the target frequency to operate for a third preset time, and then recovering the operation state before the air conditioner.
In a preferred technical solution of the above air conditioner control method, the target frequency includes a first frequency and a second frequency, and the first frequency is smaller than the second frequency.
In a preferred technical solution of the above air conditioner control method, the recovering the motion state before the air conditioner includes:
restoring the opening degree of the electronic expansion valve to a preset opening degree and/or stopping applying low-frequency vibration to the evaporator of the air conditioner.
In the preferred technical solution of the air conditioner control method, before the step of controlling the air conditioner to raise the frequency in a preset raising frequency manner, the air conditioner control method further includes:
Acquiring the current running frequency of the air conditioner in a refrigeration mode;
and executing frequency raising operation on the air conditioner after the current operation frequency is smaller than the preset operation frequency and the air conditioner is operated for a fourth preset time.
A second aspect of the present invention provides an air conditioner including a processor and a memory for storing computer executable instructions that are capable of being invoked and executed by the processor to implement the air conditioner control method according to any one of the first aspects.
Under the condition of adopting the technical scheme, in the air conditioner control method, in the process of controlling the air conditioner to raise the frequency in a preset mode, the electronic expansion valve of the air conditioner is controlled to be opened and closed for preset times in a circulating way and/or low-frequency vibration is applied to the evaporator of the air conditioner, so that the mobility of oil in a refrigerant system of the air conditioner is increased, the oil return is optimized, the oil return precision of a compressor in the air conditioner is improved, and the oil return performance of the air conditioner is further improved.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
Fig. 1 is a schematic structural view of a variable frequency air conditioner according to an exemplary embodiment of the present invention.
Fig. 2 is a flowchart of core steps of an air conditioner control method according to an exemplary embodiment of the present invention.
Fig. 3 is a detailed step flowchart of an air conditioner control method according to an exemplary embodiment of the present invention, in which a specific operation of cyclic opening and closing of an electronic expansion valve is shown.
Fig. 4 is a detailed step flowchart of an air conditioner control method according to an exemplary embodiment of the present invention, in which main operation steps in an air conditioner oil return process are shown.
Fig. 5 is an exemplary flowchart of an air conditioner control method according to an exemplary embodiment of the present invention, in which all relevant steps in an air conditioner oil return process are shown.
Fig. 6 is a schematic structural view of an air conditioner according to an exemplary embodiment of the present invention.
Reference numerals illustrate:
1. A storage tank; 2. a compressor; 3. a condenser; 4. an evaporator; 5. a valve; 6. an electronic expansion valve; 10. an air conditioner; 101. a processor; 102. a memory.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, based on the described embodiments, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the invention.
The following detailed description of embodiments of the invention, examples of which are illustrated in the accompanying drawings and, by way of example, are intended to be illustrative, and not to be construed as limiting, of the invention.
An exemplary embodiment of the present invention provides an air conditioner control method, which is suitable for a variable frequency air conditioner, and in particular, for a scenario in which the variable frequency air conditioner with a higher ambient temperature of an air conditioner outdoor unit performs refrigeration.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a variable frequency air conditioner according to the present embodiment. The variable frequency air conditioner comprises a storage tank 1, a compressor 2, a condenser 3 and an evaporator 4. Wherein a valve 5 is provided between the compressor 2 and the condenser 3, which valve may include, but is not limited to, a four-way valve. An electronic expansion valve 6 is arranged between the condenser 3 and the evaporator 4.
When the variable frequency air conditioner is used for refrigerating, the refrigerant in the storage tank 1 enters the compressor 2, the refrigerant is compressed by the compressor 2 to obtain high-temperature and high-pressure superheated steam, and the high-temperature and high-pressure superheated steam is discharged from the exhaust port of the compressor 2 and then enters the condenser 3 after passing through the valve 5. The high-temperature and high-pressure superheated steam exchanges heat in the condenser 3, and the formed hot gas is blown out from a wind gap through a fan (such as an axial flow fan) of the outdoor unit and enters the outdoor, and meanwhile, the high-temperature and high-pressure superheated steam becomes low-temperature and high-pressure liquid. The high-temperature and high-pressure liquid enters the evaporator 4 in the indoor unit through the electronic expansion valve 6. The high-temperature and high-pressure liquid is gasified in the evaporator 4, and a large amount of heat is absorbed from the room by the indoor unit, and changed into dry saturated steam again, and the formed cool air is blown out by a fan (such as a cross-flow fan) of the indoor unit, and the cool air enters the room to lower the room temperature. The dry saturated steam finally enters the storage tank 1 and then enters the compressor 2 from the storage tank 1, and the next refrigeration cycle is continued.
According to the air conditioner control method, in the air conditioner frequency raising process, the air conditioner is controlled to raise the frequency in a preset mode, and in the process of raising the frequency to the target frequency, the electronic expansion valve of the air conditioner is controlled to be opened and closed for preset times in a circulating mode and/or low-frequency vibration is applied to the evaporator of the air conditioner, so that the mobility of oil in a refrigerant system of the air conditioner is improved, oil return is optimized, the oil return precision of a compressor in the air conditioner is improved, and the oil return performance of the air conditioner is improved.
Referring to fig. 2, fig. 2 is a flow chart of an air conditioner control method according to the present embodiment. The air conditioner control method comprises the following steps:
step S300: and controlling the air conditioner to raise the frequency in a preset raising frequency mode.
Step S400: in the process that the frequency of the air conditioner is increased to the target frequency, the electronic expansion valve of the air conditioner is controlled to be opened and closed for a preset number of times in a circulating way and/or low-frequency vibration is applied to the evaporator of the air conditioner.
In step S300, when the air conditioner (inverter air conditioner) performs cooling, the air conditioner is controlled to be frequency-increased in a preset frequency-increasing manner. The preset frequency raising mode may be frequency raising according to a preset frequency raising rate. The preset frequency-raising rate can be set according to requirements, for example, the preset frequency-raising rate can be 1Hz/s, and the preset frequency-raising rate can also be set to other rates.
Or the preset frequency raising mode can be to maintain the set duration on the oil return frequency on the basis of raising the frequency according to the preset frequency raising rate. The set duration may be 1min, and the oil return frequency may include, but is not limited to, any one of 38Hz, 58Hz, or 88 Hz.
Or the preset frequency raising mode can also be to maintain operation for a preset time period on the set frequency, and then raise the frequency according to the preset frequency raising rate until the target frequency is raised. The set frequency may include, but is not limited to, any of 38Hz, 58Hz, or 88Hz, and the preset duration may be 1 minute.
Referring to fig. 1 and 2, in step S400, the electronic expansion valve of the air conditioner is controlled to be cyclically opened and closed a preset number of times during the frequency of the air conditioner is increased to a target frequency. The electronic expansion valve 6 is opened and closed in one cycle: and controlling the opening of the electronic expansion valve 6 to a first preset opening, closing the electronic expansion valve 6 after a period of operation, and then adjusting the opening of the electronic expansion valve 6 to a second preset opening and operating for a period of time. Wherein, the lower limit value of the first preset opening is larger than the upper limit value of the second preset opening. For example, the range of the first preset opening is 90% -100%, and the range of the second preset opening is 1% -30%. The range of the first preset opening and the second preset opening may be other values, and only the lower limit value of the first preset opening is required to be greater than the upper limit value of the second preset opening. On the other hand, the preset number of times is at least two.
In this example, by controlling the electronic expansion valve 6 to be opened and closed cyclically for a preset number of times, the refrigerant in the air conditioner is turbulent in the cyclic opening and closing process of the electronic expansion valve 6, and the turbulent refrigerant impacts the oil quality in the compressor, so that the oil quality flows in the refrigerant system, thereby optimizing the oil return and improving the oil return performance of the air conditioner.
The number of the electronic expansion valves 6 may be plural. When the number of electronic expansion valves 6 is plural, all the electronic expansion valves 6 may be opened in step S400.
Or in the course of the frequency of the air conditioner rising to the target frequency, the low-frequency vibration is applied to the evaporator 4 in the air conditioner. For example, the evaporator is controlled to be started in a low-frequency mode, low-frequency vibration promotes the flow of refrigerant in a refrigerant system and oil in a compressor, so that oil return is optimized, and the oil return performance of the air conditioner is improved.
Or in the process of raising the frequency of the air conditioner to the target frequency, the electronic expansion valve 6 of the air conditioner is controlled to be opened and closed circularly for a preset number of times, and simultaneously, low-frequency vibration is applied to the evaporator 4 in the air conditioner. The refrigerant system is enabled to generate turbulent flow in the refrigerant system, the turbulent refrigerant impacts oil quality in the compressor, the oil quality flows in the refrigerant system, and meanwhile, the low-frequency vibration of the evaporator is used for promoting the flow of the refrigerant and the oil quality, so that the oil return performance of the air conditioner is optimized, and the oil return performance of the air conditioner is effectively improved.
It should be noted that, the target frequency in this embodiment may be calculated by the control system of the air conditioner according to the ambient temperature of the air conditioner when the air conditioner is turned on.
Referring to fig. 3, in some embodiments, the operation of controlling the electronic expansion valve 6 of the air conditioner to be cyclically opened and closed a preset number of times includes the steps of:
Step S410: and controlling the opening of the electronic expansion valve to be the maximum opening, and running for a first preset time.
Step S420: and after the first preset time, closing the electronic expansion valve.
Step S430: and controlling the opening of the electronic expansion valve to be the minimum opening, and running for a second preset time.
In step S410, the maximum opening degree of the electronic expansion valve 6 may be set according to actual requirements. The range of the maximum opening degree may include, but is not limited to, 90% -100%, so as to increase the flow of the refrigerant in the refrigerant system as much as possible and increase the return air temperature. The first preset time may be set according to actual requirements, for example, the first preset time may be 10s, or the first preset time may also be other time.
In step S430, the opening degree of the electronic expansion valve 6 is controlled to be the minimum opening degree. The minimum opening degree can be set according to actual requirements. After the opening of the electronic expansion valve 6 is adjusted to the minimum opening, the second preset time is operated. The second preset time can be set according to actual requirements. The second preset time may be the same as the first preset time, for example, both are 10s, or the second preset time may be other time.
In this example, the electronic expansion valve 6 is opened and closed in one cycle by: the opening of the electronic expansion valve 6 is firstly adjusted to the maximum, and a first preset time is operated to increase the fluidity of the refrigerant in the refrigerant system as much as possible, which is the first flow of the refrigerant. Then, the electronic expansion valve 6 is closed, and the flow of the refrigerant is stopped. Then, the opening of the electronic expansion valve 6 is adjusted to the minimum opening to enable the refrigerant to flow again for a second time, and the second time is operated for a second preset time, wherein the impact force of the second time is smaller than that of the first time. Finally, through implementation of the cyclic opening and closing process of the electronic expansion valve 6 for a plurality of times, the refrigerant in the refrigerant system is turbulent, and the refrigerant after the turbulent flow impacts the oil quality in the compressor, so that the oil quality flows in the refrigerant system, the return air temperature is improved, and the performance of the compressor 2 in the air conditioner is further effectively improved.
Referring to fig. 5, in some embodiments, the preset number of cyclic opening and closing of the electronic expansion valve 6 is five or more. For example, the preset times may be five times, six times, or seven times and more. That is, through at least five times of cyclic opening and closing processes, the refrigerant in the refrigerant system is turbulent, and the refrigerant after the turbulent flow impacts the oil quality in the compressor, so that the oil quality flows in the refrigerant system, thereby improving the return air temperature and further effectively improving the performance of the compressor 2 in the air conditioner.
In some embodiments, the evaporator 4 of the air conditioner is provided with a low frequency vibration device (not shown in the drawings). The low frequency vibration device may include, but is not limited to, a low frequency oscillator.
In the operation of applying low-frequency vibration to the evaporator 4 of the air conditioner, the low-frequency vibration may be applied to the evaporator 4 of the air conditioner by a low-frequency vibration device such as a low-frequency oscillator.
In the example, the low-frequency vibration is utilized to promote the flow of the refrigerant in the refrigerant system and the oil in the compressor, so that the oil return performance of the air compressor is improved.
In some embodiments, the air conditioner control method further includes the steps of: and controlling the rotating speed of the indoor unit fan of the air conditioner to be larger than the preset rotating speed in the process that the frequency of the air conditioner is increased to the target frequency.
The preset rotational speed may be a rotational speed less than a maximum rotational speed of a fan in the air conditioner indoor unit. That is, in this step, the rotational speed of the fan of the indoor unit of the air conditioner is controlled to be the maximum rotational speed, so that the pressure in the air conditioning system can be effectively reduced, the coil temperature of the indoor unit of the air conditioner is increased, thereby increasing the return air temperature, and simultaneously, the opening degree adjustment of the electronic expansion valve 6 and the low-frequency vibration of the evaporator 4 are combined, so that the fluidity of the oil in the air conditioner in the refrigerant system is increased while the return air temperature is effectively increased, and further, the oil return performance of the compressor 2 in the air conditioner is effectively improved.
Referring to fig. 4, in some embodiments, after step S400, the air conditioner control method further includes the steps of:
Step S500: after the frequency of the air conditioner reaches the target frequency, maintaining the target frequency to operate for a third preset time, and then restoring the operation state before the air conditioner.
The target frequency of the air conditioner includes a first frequency and a second frequency, the first frequency being less than the second frequency. Wherein the first frequency may include, but is not limited to, 58Hz and the second frequency may include, but is not limited to, 88Hz. The first frequency and the second frequency can be flexibly selected according to actual requirements so as to adapt to refrigeration working conditions of different outdoor environment temperatures. For example, when the outdoor ambient temperature is high (e.g., 35 ℃ and above), and the difference between the outdoor ambient temperature and the indoor ambient temperature is small, at this time, the target frequency of the air conditioner may be set to the second frequency, so as to achieve the purpose of rapidly reducing the room temperature. And when the outdoor environment temperature is not too high (for example, 30-35 ℃) and the indoor and outdoor environment temperature difference is small, the target frequency of the air conditioner can be set to be the first frequency.
The third preset time may include, but is not limited to, 1min. The operation state before the air conditioner is a state in which the air conditioner is operated in a normal cooling mode.
Among other things, in one example, the movement state before the air conditioner may include: the opening degree of the electronic expansion valve 6 is restored to a preset opening degree and/or the application of the low-frequency vibration to the evaporator 4 of the air conditioner is stopped. Or the rotating speed of the fan of the air conditioner indoor unit is adjusted to a preset rotating speed.
In this example, by controlling the opening adjustment of the electronic expansion valve 6, the low-frequency vibration of the evaporator 4, and the control of the fan rotation speed, the frequency of the air conditioner is sequentially increased gradually while the oil return effect in the compressor 2 in the air conditioner is ensured, and after the target frequency is reached, the frequency is maintained and a third preset time is operated, and the operation state of the air conditioner is adjusted to the operation state in the previous refrigeration mode, so that the indoor environment temperature is quickly cooled, and the refrigeration experience of indoor personnel is improved.
Referring to fig. 4, in some embodiments, before step S300, that is, before the step of controlling the air conditioner to up-frequency in a preset up-frequency manner, the air conditioner control method further includes the steps of:
Step S100: and acquiring the current running frequency of the air conditioner in the refrigeration mode.
Step S200: and when the current operation frequency is smaller than the preset operation frequency and the air conditioner is operated for a fourth preset time, executing the frequency raising operation on the air conditioner.
In step S200, the preset operating frequency may be set according to the actual requirement, for example, the preset operating frequency may be 35Hz. The fourth preset time can be set according to actual requirements, for example, when the outdoor environment temperature is higher (such as 35 ℃ and above) and the indoor and outdoor temperature difference is smaller, the fourth preset time can be set to be longer, such as 6-8 h; and when the outdoor environment temperature is not too high (for example, 30-35 ℃), and the indoor-outdoor temperature difference is not too large, the fourth preset time can be set to be shorter, for example, 2-6 hours.
Taking the preset operating frequency of 35Hz and the fourth preset time of 8h as an example. In the refrigerating mode, the current running frequency of the air conditioner is smaller than 35Hz, after the air conditioner runs for 8 hours, the air conditioner is subjected to frequency raising operation according to the steps S300 and S400, so that the indoor refrigerating effect is effectively ensured, and the refrigerating experience of indoor personnel is improved.
Referring to fig. 6, an exemplary embodiment of the present invention provides an air conditioner 10 for performing the air conditioner control method provided in the above-described embodiment.
Wherein the controller 10 comprises a processor 101 and a memory 102. The memory 102 is used to store computer executable instructions that can be invoked and executed by the processor 101 to implement the air conditioning control method provided by the above-described embodiments.
The air conditioner 10 in this example first obtains the current operating frequency of the air conditioner in the cooling mode, and performs the frequency raising operation on the air conditioner after the current operating frequency is smaller than the preset operating frequency. In the process of air conditioner frequency raising, the air conditioner is controlled to raise the frequency in a preset mode, and in the process of raising the frequency to a target frequency, the electronic expansion valve of the air conditioner is controlled to be opened and closed for preset times in a circulating mode and/or low-frequency vibration is applied to the evaporator of the air conditioner, so that the mobility of oil in a refrigerant system of the air conditioner is increased, oil return is optimized, the oil return precision of a compressor in the air conditioner is improved, and the oil return performance of the air conditioner is further improved.
It will be appreciated by those skilled in the art that the present invention may implement all or part of the procedures in the methods of the above embodiments, or may be implemented by a computer program instructing relevant hardware, and the computer program may be stored in a computer readable storage medium, and the computer program may implement the steps of the respective method embodiments when executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, executable files or in some intermediate form, etc. The computer readable storage medium may include: any entity or device capable of carrying computer program code, a medium, a USB flash disk, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a read-only memory, a random access memory, an electrical carrier wave signal, a telecommunication signal, a software distribution medium, and so forth.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.
Claims (9)
1. An air conditioner control method, characterized in that the control method comprises:
Controlling the air conditioner to raise the frequency in a preset raising frequency mode;
In the process that the frequency of the air conditioner is increased to the target frequency, controlling the electronic expansion valve of the air conditioner to be cyclically opened and closed for preset times, and applying low-frequency vibration to the evaporator of the air conditioner so as to improve the oil return precision of the compressor in the air conditioner;
the electronic expansion valve of the air conditioner is controlled to be opened and closed circularly for preset times, and the electronic expansion valve comprises:
controlling the opening of the electronic expansion valve to be the maximum opening, and running for a first preset time;
After the first preset time, closing the electronic expansion valve;
and controlling the opening of the electronic expansion valve to be the minimum opening, and running for a second preset time.
2. The air conditioner control method according to claim 1, wherein the preset number of times is five or more.
3. The control method of an air conditioner according to claim 1, wherein a low frequency vibration device is provided on an evaporator of the air conditioner;
the operation of applying low-frequency vibration to the evaporator of the air conditioner includes: and applying low-frequency vibration to the evaporator of the air conditioner through the low-frequency vibration equipment.
4. The air conditioner control method according to claim 1, characterized in that the control method further comprises:
And controlling the rotating speed of the indoor unit fan of the air conditioner to be larger than a preset rotating speed in the process that the frequency of the air conditioner is increased to the target frequency.
5. The air conditioner control method according to claim 1, characterized in that the control method further comprises:
And after the frequency of the air conditioner reaches the target frequency, maintaining the target frequency to operate for a third preset time, and then recovering the operation state before the air conditioner.
6. The air conditioner control method according to claim 5, wherein the target frequency includes a first frequency and a second frequency, the first frequency being smaller than the second frequency.
7. The air conditioner control method according to claim 5, wherein the recovering the movement state before the air conditioner comprises:
restoring the opening degree of the electronic expansion valve to a preset opening degree and/or stopping applying low-frequency vibration to the evaporator of the air conditioner.
8. The air conditioner control method according to any one of claims 1 to 7, characterized in that, before the step of controlling the air conditioner to rise in a preset rising frequency manner, the air conditioner control method further comprises:
Acquiring the current running frequency of the air conditioner in a refrigeration mode;
and executing frequency raising operation on the air conditioner after the current operation frequency is smaller than the preset operation frequency and the air conditioner is operated for a fourth preset time.
9. An air conditioner comprising a processor and a memory for storing computer executable instructions, wherein the computer executable instructions are capable of being invoked and executed by the processor to implement the air conditioner control method of any one of claims 1-8.
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