CN110207314B - Air conditioner, air conditioner control method and device and readable storage medium - Google Patents

Air conditioner, air conditioner control method and device and readable storage medium Download PDF

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Publication number
CN110207314B
CN110207314B CN201910563344.6A CN201910563344A CN110207314B CN 110207314 B CN110207314 B CN 110207314B CN 201910563344 A CN201910563344 A CN 201910563344A CN 110207314 B CN110207314 B CN 110207314B
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Prior art keywords
temperature
compressor
air conditioner
fan
coil
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CN110207314A (en
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刘翔
喻广南
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Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
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Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—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
    • 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
    • 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
    • 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)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Thermal Sciences (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses an air conditioner control method, which comprises the following steps: when the air conditioner is in a self-cleaning mode, controlling the air conditioner to perform refrigeration operation so as to enable the air conditioner to finish condensation and frosting; controlling the heating operation of the air conditioner, and acquiring the current coil temperature of the heat exchanger as a first coil temperature; and adjusting the frequency of a compressor and the rotating speed of a fan of the heat exchanger according to the temperature of the first coil pipe. The invention also discloses an air conditioner control device, an air conditioner and a readable storage medium. The invention aims to improve the stability of the operation of the compressor.

Description

Air conditioner, air conditioner control method and device and readable storage medium
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner control method, an air conditioner control device, an air conditioner and a readable storage medium.
Background
Most of the existing air conditioners adopt a tube-fin heat exchanger, and pollutants such as dust in the air are easy to adhere to fins and can be continuously accumulated into dirt along with the use of the air conditioners. The formation of dirt can lead to the heat transfer thermal resistance increase of fin, reduces the heat exchange efficiency of heat exchanger, can nourish the bacterium simultaneously, influences the air quality. Therefore, the heat exchanger needs to be cleaned periodically during the use of the air conditioner, and the self-cleaning function of the air conditioner is brought forward.
The self-cleaning process of the air conditioner generally comprises the steps of water condensation, frost formation, defrosting and the like. In the defrosting stage, the air conditioner is heated and operated, the defrosting temperature of a heat exchanger in most of the existing air conditioner products is generally controlled by the compressor singly, for example, the compressor is subjected to frequency reduction treatment singly when the temperature of the heat exchanger is higher, but the adjustment mode easily causes misjudgment, so that unnecessary adjustment of the compressor is caused, and the stability of the operation of the compressor is influenced.
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 invention mainly aims to provide an air conditioner control method, aiming at improving the running stability of a compressor.
In order to achieve the above object, the present invention provides an air conditioner control method, including the steps of:
when the air conditioner is in a self-cleaning mode, controlling the air conditioner to perform refrigeration operation so as to enable the air conditioner to finish condensation and frosting;
controlling the heating operation of the air conditioner, and acquiring the current coil temperature of the heat exchanger as a first coil temperature;
and adjusting the frequency of a compressor and the rotating speed of a fan of the heat exchanger according to the temperature of the first coil pipe.
Optionally, before the step of adjusting the frequency of the compressor and the rotation speed of the fan of the heat exchanger according to the temperature of the first coil, the method further includes:
judging whether the temperature of the first coil pipe is higher than a first preset temperature or not;
and when the temperature of the first coil pipe is higher than a first preset temperature, executing the step of adjusting the frequency of the compressor and the rotating speed of a fan of the heat exchanger according to the temperature of the first coil pipe.
Optionally, the step of adjusting the frequency of the compressor and the rotation speed of the fan of the heat exchanger according to the first coil temperature includes:
judging whether the temperature of the first coil is less than or equal to a second preset temperature, wherein the second preset temperature is greater than the first preset temperature;
and if the temperature of the first coil pipe is less than or equal to the second preset temperature, controlling the fan to increase the rotating speed, and controlling the compressor to maintain the current frequency operation.
Optionally, after the step of determining whether the first coil temperature is less than or equal to a second preset temperature, the method further includes:
and if the temperature of the first coil pipe is higher than the second preset temperature, controlling the compressor to reduce the frequency.
Optionally, when the first coil temperature is greater than the second preset temperature, before the step of controlling the compressor to reduce the frequency, the method further comprises:
judging whether the current rotating speed of the fan is greater than or equal to a first preset rotating speed or not;
if the current rotating speed of the fan is greater than or equal to the first preset rotating speed, executing the step of controlling the frequency of the compressor to be reduced;
and if the current rotating speed of the fan is less than the first preset rotating speed, controlling the fan to increase the rotating speed.
Optionally, when the first coil temperature is greater than the second preset temperature, before the step of controlling the compressor to reduce the frequency, the method further comprises:
judging whether the temperature of the first coil is less than or equal to a third preset temperature, wherein the third preset temperature is greater than the second preset temperature;
if the first coil temperature is less than or equal to the third preset temperature, executing the step of controlling the frequency reduction of the compressor;
and if the temperature of the first coil pipe is higher than the third preset temperature, controlling the compressor to stop running.
Optionally, after the step of controlling the compressor to stop operating, the method further includes:
and controlling the fan to be closed after the fan runs for a preset time.
Optionally, before the step of obtaining the current coil temperature of the heat exchanger as the first coil temperature, the method further includes:
when the air conditioner starts to heat, a fan of the heat exchanger is closed;
acquiring the current coil temperature of the heat exchanger as a second coil temperature;
when the temperature of the second coil pipe is greater than or equal to a fourth preset temperature, starting the fan;
and controlling the fan to operate according to a second preset rotating speed.
Further, in order to achieve the above object, the present application also proposes an air conditioning control device including: the air conditioner control method comprises a memory, a processor and an air conditioner control program stored on the memory and capable of running on the processor, wherein the air conditioner control program realizes the steps of the air conditioner control method according to any one of the above items when being executed by the processor.
In addition, in order to achieve the above object, the present application also proposes an air conditioner including the air conditioning control device as described above.
Further, in order to achieve the above object, the present application also proposes a readable storage medium having stored thereon an air conditioning control program that, when executed by a processor, implements the steps of the air conditioning control method as recited in any one of the above.
According to the air conditioner control method provided by the invention, in the heating stage of the self-cleaning mode of the air conditioner, the frequency of the compressor and the rotating speed of the fan of the cleaned heat exchanger are adjusted according to the temperature of the coil, the frequency of the compressor is not only adjusted independently, and the adjusting requirement on the compressor can be reduced due to the effect of increasing the rotating speed adjustment of the fan, so that the frequency of the frequency adjustment of the compressor is reduced, and the running stability of the compressor is improved while the air conditioning system is protected.
Drawings
FIG. 1 is a schematic diagram of a hardware configuration of an embodiment of an air conditioning control apparatus according to the present invention;
FIG. 2 is a schematic flow chart illustrating a first embodiment of an air conditioning control method according to the present invention;
FIG. 3 is a flowchart illustrating a second embodiment of an air conditioning control method according to the present invention;
FIG. 4 is a flowchart illustrating a third embodiment of an air conditioning control method according to the present invention;
FIG. 5 is a flowchart illustrating a fourth embodiment of an air conditioning control method according to the present invention;
fig. 6 is a flowchart illustrating an air conditioner control method according to a fifth 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 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: when the air conditioner is in a self-cleaning mode, controlling the air conditioner to perform refrigeration operation so as to enable the air conditioner to finish condensation and frosting; controlling the heating operation of the air conditioner, and acquiring the current coil temperature of the heat exchanger as a first coil temperature; and adjusting the frequency of a compressor and the rotating speed of a fan of the heat exchanger according to the temperature of the first coil pipe.
In the prior art, the temperature of the heat exchanger in the heating stage of the self-cleaning process is generally controlled by only adopting the compressor for adjustment, but the adjustment mode easily causes misjudgment, so that unnecessary adjustment of the compressor is caused, and the running stability of the compressor is influenced.
The present invention provides the above solution, aiming at improving the stability of the compressor operation.
The embodiment of the invention provides an air conditioner control device which can be applied to air conditioners such as a split air conditioner, a cabinet air conditioner, a window air conditioner and the like, and can realize the cleaning of a heat exchanger in the air conditioner by adjusting the operation of the air conditioner. The air conditioner control device may be built in the air conditioner, or may be a control device provided independently of the air conditioner.
In an embodiment of the present invention, referring to fig. 1, an air conditioning control apparatus includes: the processor 1001 includes, for example, a CPU, a memory 1002, a temperature sensor 1003, a humidity sensor 1004, a timer 1005, a counter 1006, and the like. The memory 1002 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). The memory 1002 may alternatively be a storage device separate from the processor 1001.
Among them, the temperature sensor 1003 may be provided in plurality to detect temperature data of different positions. The specific temperature sensor 1003 is arranged in the middle of a coil of a heat exchanger of the air conditioner to detect the temperature of the coil of the heat exchanger; the temperature sensor 1003 is arranged at a return air inlet of the air conditioner to detect the return air temperature of the air conditioner to be used as the indoor environment temperature; the temperature sensor 1003 may be disposed in an outdoor unit casing of the air conditioner to detect an outdoor ambient temperature. The humidity sensor 1004 can also be disposed at the air return inlet of the air conditioner to detect the indoor environmental humidity. Timer 1005 may be used to count the duration of each operational phase or any component in the self-cleaning mode. The counter 1005 may be used to count the number of times that any component repeats a certain state, such as the number of times that the indoor fan is continuously down.
The processor 1001 is respectively connected to the memory 1002, the temperature sensor 1003, the humidity sensor 1004, the timer 1005, the counter 1006, and the like in a communication manner, so as to read data of each component or store the data in the memory 1002 according to requirements. In addition, the processor 1001 may also be connected to a compressor, an indoor fan, an outdoor fan, a throttle device, etc. in the air conditioner to obtain an operating frequency of the compressor and a rotational speed of the fan.
Those skilled in the art will appreciate that the configuration of the device shown in fig. 1 is not intended to be limiting of the device 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 1002, which is a readable storage medium, may include an air conditioner control program therein. In the apparatus shown in fig. 1, the processor 1001 may be configured to call an air-conditioning control program stored in the memory 1002, and perform operations of relevant steps of the air-conditioning control method in the following embodiments.
The embodiment of the invention also provides an air conditioner control method.
Referring to fig. 2, there is provided a first embodiment of an air conditioning control method of the present invention, including:
step S10, when the air conditioner is in the self-cleaning mode, controlling the air conditioner to perform refrigeration operation so as to enable the air conditioner to finish condensation and frosting;
the self-cleaning mode is an operation mode of the air conditioner, and the air conditioner can adjust the operation of the compressor, the fan, the four-way valve, the throttling device and other components of the air conditioner in the self-cleaning mode so as to clean the heat exchanger. Specifically, the operation stage of the air conditioner in the self-cleaning mode may include a condensation stage, a frosting stage, and a defrosting stage in sequence. The air conditioner is in refrigerating operation in the condensation stage and the frosting stage, the heat exchanger firstly forms condensed water to cover dirt on the surface of the coil, and then the condensed water is frosted on the surface of the heat exchanger to condense the dirt into frost. In the defrosting stage, the air conditioner is in heating operation, dirt is taken away by water flow formed by melting of ice on the surface of the coil pipe of the heat exchanger, and therefore the heat exchanger is cleaned.
And under the conditions that a cleaning instruction input by a user is received or the working time of the air conditioner reaches a preset time and the like, the air conditioner can be controlled to enter a self-cleaning mode. In the process of refrigerating operation of the air conditioner, the temperature of the coil of the cleaned heat exchanger can be reduced by adjusting the operation of the compressor, the fan and/or the electronic expansion valve and other components in the first time period after the refrigerating is started, and the moisture in the air can form condensed water on the surface of the low-temperature coil and gradually and fully wet the surface of the coil of the cleaned heat exchanger.
Step S20, controlling the heating operation of the air conditioner, and acquiring the current coil temperature of the heat exchanger as the first coil temperature;
the heat exchanger is specifically an evaporator to be cleaned, and can be an indoor heat exchanger or an outdoor heat exchanger. When the duration time of the cooling operation reaches the first time, the evaporating temperature of the cleaned heat exchanger is further reduced by closing the fan of the cleaned heat exchanger to improve the operation frequency of the compressor, increasing the opening of the expansion valve and the like, and the heat exchanger enters a frosting stage. When the time of the frosting stage of the heat exchanger reaches the target time, the frosting on the surface of the heat exchanger can be judged to be finished. For example, when the duration of the cooling operation reaches the first time period and the time reaches the target time period, it is considered that the frost formation on the surface of the heat exchanger is completed.
In order to balance the system pressure and improve the operation stability of the air conditioner, the air conditioner can be shut down firstly after the frosting is finished, and the air conditioner is controlled to start heating after the air conditioner is shut down for a set time (such as 3 min).
In the process of heating by the air conditioner, the temperature of the middle part of the cleaned heat exchanger coil can be continuously acquired as the temperature of the first coil.
And step S30, adjusting the frequency of the compressor and the rotating speed of a fan of the heat exchanger according to the temperature of the first coil pipe.
Specifically, the temperature of the first coil pipe can be divided into different temperature intervals, and the different temperature intervals can correspond to different adjustment modes of frequency and rotating speed. The adjustment mode comprises a target device needing to be adjusted in the compressor and the heat exchanger, parameters (such as frequency, rotating speed and the like) required to be adjusted by the target device and an adjustment direction (increasing or decreasing). The first coil temperature can be divided into different temperature intervals, the fan rotating speed is adjusted in the first temperature interval, the compressor frequency is not adjusted, the compressor frequency is adjusted in the second temperature interval, the fan rotating speed is not adjusted, the compressor is closed in the third temperature interval, and the like. The specific adjustment mode can be specifically set according to different requirements.
And determining a target device required to be adjusted and regulated in the compressor and the fan of the heat exchanger according to the rotating speed and frequency adjusting mode, controlling the target device to adjust according to the parameters and the adjusting mode required to be adjusted in the rotating speed and frequency adjusting mode, controlling devices which do not need to be adjusted in the compressor and the fan to maintain the current state to operate, and if both devices do not need to be adjusted, maintaining the current state to operate.
According to the air conditioner control method provided by the embodiment of the invention, in the heating stage of the self-cleaning mode of the air conditioner, the frequency of the compressor and the rotating speed of the fan of the cleaned heat exchanger are adjusted according to the temperature of the coil, the frequency of the compressor is not only adjusted independently, and the adjusting requirement on the compressor can be reduced due to the effect of increasing the rotating speed adjustment of the fan, so that the frequency of the frequency adjustment of the compressor is reduced, and the running stability of the compressor is improved while the air conditioning system is protected.
Further, in the first embodiment, before the step S30, the method may further include: judging whether the temperature of the first coil pipe is higher than a first preset temperature or not; when the first coil temperature is greater than the first preset temperature, step S30 is executed. When the temperature of the first coil pipe is less than or equal to a first preset temperature, the compressor and the fan can be controlled to maintain the current state to operate. When the temperature of the first coil pipe is less than or equal to a first preset temperature, the temperature of the coil pipe can be considered to meet the reliable operation of the compressor, the requirement for adjusting the frequency of the compressor is low, and the temperature of the coil pipe is reduced without combining the adjustment of the compressor and the adjustment of the fan; the temperature of the first coil pipe is higher than a first preset temperature, the return air temperature of the current compressor can be considered to be higher, the running reliability of the compressor is low, the temperature of the heat exchanger needs to be reduced urgently, the requirement for adjusting the compressor is larger at the moment, the compressor and the fan need to be combined to adjust so as to protect an air conditioning system, and the running reliability of the compressor is guaranteed while the adjusting frequency of the compressor is reduced.
Further, a second embodiment of the present application is proposed based on the above-described first embodiment. In the second embodiment, referring to fig. 3, step S30 may include:
step S31, determining whether the first coil temperature is less than or equal to a second preset temperature, where the second preset temperature is greater than the first preset temperature;
if the first coil temperature is less than or equal to the second preset temperature, performing step S32; if the first coil temperature is greater than the second preset temperature, step S33 is executed.
And step S32, controlling the fan to increase the rotating speed and controlling the compressor to maintain the current frequency operation.
The increase of the rotating speed of the fan can be performed according to a preset amplitude (such as 1% of the maximum rotating speed of the fan) on the basis of the current rotating speed of the fan.
Step S33, controlling the compressor to reduce frequency;
and the frequency of the compressor is reduced, and the fan can be controlled to maintain the current rotating speed to operate.
In this embodiment, when there is the operation risk in the compressor, if first coil temperature is less than or equal to the second and predetermines the temperature, it is lower to show that the risk that the compressor operation goes wrong is lower, can only to fan rotational speed adjustment, and not to the compressor adjustment, the cooling effect of preferential performance fan and need not the compressor adjustment to reduce the compressor adjustment frequency, improve the stability of compressor operation. If the temperature of the first coil pipe is higher than the second preset temperature, the risk that the compressor goes wrong in operation is high, the frequency of the compressor is reduced at the moment so as to timely reduce the temperature of the heat exchanger, and the operation reliability of the compressor is guaranteed.
In the second embodiment, when the temperature of the first coil is less than or equal to the second preset temperature, before the step S32 is executed, it may be further determined whether the current rotational speed of the fan is the rated maximum rotational speed of the fan, if so, the step S33 is executed, and if not, the step S32 is executed, so that when the cooling effect of the fan is exerted to the maximum and the reliability of the system operation cannot be met, the reliable operation of the system is ensured by adjusting the compressor in time.
Further, based on the second embodiment, a third embodiment of the air conditioner control method of the present application is proposed. In a third embodiment, referring to fig. 4, when the first coil temperature is greater than the second preset temperature, before step S33, the method further includes:
step S30a, judging whether the current rotating speed of the fan is greater than or equal to a first preset rotating speed;
if the current rotating speed of the fan is greater than or equal to the first preset rotating speed, executing step S33; if the current rotating speed of the fan is less than the first preset rotating speed, executing a step S30 b;
the first preset rotating speed may be the maximum rotating speed of the fan or a rotating speed value close to the maximum rotating speed.
And step S30b, controlling the fan to increase the rotating speed.
Specifically, the wind turbine may be increased to a maximum wind speed.
In addition, step S30b may be followed by returning to step S30a at a preset time interval.
In this embodiment, through the above-mentioned mode, when guaranteeing that the fan performance is biggest heat exchanger cooling effect, just guarantee the reliability of system operation through the effect of falling the frequency of compressor to further avoid the unnecessary adjustment of compressor, reduce the compressor and adjust the frequency, further improve compressor operating stability.
Further, a fourth embodiment of the air conditioning control method of the present application is proposed based on the second embodiment or the third embodiment described above. In a fourth embodiment, referring to fig. 5, when the first coil temperature is greater than the second preset temperature, before step S30a or step S33, the method further includes:
step S301, judging whether the temperature of the first coil pipe is less than or equal to a third preset temperature, wherein the third preset temperature is greater than the second preset temperature;
if the first coil temperature is less than or equal to the third preset temperature, step S33 or step S30a is executed, and if the first coil temperature is greater than the third preset temperature, step S302 is executed.
Wherein, the maximum evaporator temperature allowed by the reliable operation of the air conditioning system can be used as the third preset temperature.
And step S302, controlling the compressor to stop running.
In the embodiment, when the temperature of the first coil pipe cannot be prevented from rising to the temperature causing the problem of system operation even if the temperature of the first coil pipe is adjusted by the compressor and the fan, the compressor can be stopped in time to protect the air conditioning system.
Further, in the fourth embodiment, after step S302, the fan may be controlled to operate for a preset time period and then be turned off, so as to cool the evaporator and ensure normal operation of the subsequent stage of the self-cleaning process.
Further, based on any of the above embodiments, a fifth embodiment of the air conditioner control method of the present application is provided. In a fifth embodiment, referring to fig. 6, before the step of obtaining the current coil temperature of the heat exchanger as the first coil temperature when the air conditioner starts heating, the method further includes:
step S01, when the air conditioner starts to heat, the fan of the heat exchanger is closed;
step S02, acquiring the current coil temperature of the heat exchanger as a second coil temperature;
step S03, when the temperature of the second coil pipe is greater than or equal to a fourth preset temperature, the fan is started;
the fourth preset temperature may be specifically determined according to an upper limit value of the temperature of the coil allowed by reliable operation of the compressor, and the temperature after being reduced by a preset value from the upper limit value may be used as the fourth preset temperature.
And step S04, controlling the fan to operate according to a second preset rotating speed.
The second preset rotating speed can be specifically 1/2 which is greater than or equal to the rated maximum rotating speed of the fan, so as to ensure the effective cooling of the evaporator by the fan.
In the embodiment, when the self-cleaning mode is started, the temperature of the coil pipe is quickly increased by closing the fan, so that a large amount of defrosting water is generated, the retention time of the defrosting water in the middle of the cleaned heat exchanger is prolonged, dirt can be washed and dissolved more effectively, the dirt is easy to fall off from the cleaned heat exchanger as the water temperature is higher, and the cleaning effect of the heat exchanger is effectively improved; meanwhile, when the temperature of the second coil pipe is greater than or equal to the fourth preset temperature, the fan is started in time to cool, so that the reliable operation of the compressor is guaranteed while the cleaning effect is guaranteed.
In addition, the embodiment of the invention also provides an air conditioner, which comprises an outdoor fan, an indoor fan, a compressor and the air conditioner control device in the embodiment. The air conditioner control device is respectively connected with the outdoor fan, the indoor fan, the compressor and the like, so as to obtain the operation data of each component and control the operation of the component according to the relevant steps in any embodiment of the air conditioner control method.
In addition, an embodiment of the present invention further provides a readable storage medium, where an air conditioning control program is stored, and the air conditioning control program, when executed by a processor, implements the relevant steps of any of the above air conditioning control methods.
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 system 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 system. 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 system that comprises the element.
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.
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 (9)

1. An air conditioning control method, characterized by comprising the steps of:
when the air conditioner is in a self-cleaning mode, controlling the air conditioner to perform refrigeration operation so as to enable the air conditioner to finish condensation and frosting;
controlling the air conditioner to perform heating operation, and turning off a fan of the heat exchanger when the air conditioner starts to perform heating;
acquiring the current coil temperature of the heat exchanger as a second coil temperature;
when the temperature of the second coil pipe is greater than or equal to a fourth preset temperature, starting the fan and controlling the fan to operate at a second preset rotating speed; the fourth preset temperature is determined according to an upper limit value of the temperature of the coil allowed by the reliable operation of the compressor;
acquiring the current coil temperature of the heat exchanger as a first coil temperature;
determining a target adjusting mode in a plurality of frequency and rotating speed adjusting modes according to the temperature of the first coil pipe; the multiple frequency and rotation speed adjusting modes comprise an adjusting mode of increasing the rotation speed of the fan and keeping the frequency of the compressor unchanged;
adjusting the frequency of a compressor and the rotating speed of a fan of the heat exchanger according to the target adjusting mode;
the step of determining a target adjustment mode among a plurality of frequency and rotation speed adjustment modes according to the first coil temperature comprises:
and if the first coil temperature is less than or equal to a second preset temperature, determining that the target adjustment mode is to control the fan to increase the rotating speed and control the compressor to maintain the current frequency operation, wherein the second preset temperature is a critical coil temperature for distinguishing the reliable risk level of the compressor.
2. The method as claimed in claim 1, wherein the step of determining the target adjustment mode among the plurality of frequency and rotation speed adjustment modes according to the first coil temperature further comprises:
judging whether the temperature of the first coil pipe is higher than a first preset temperature or not; the second preset temperature is greater than the first preset temperature
And when the first coil temperature is higher than a first preset temperature, executing the step of determining a target adjusting mode in a plurality of frequency and rotating speed adjusting modes according to the first coil temperature.
3. The air conditioning control method according to claim 2, wherein after the step of determining whether the first coil temperature is less than or equal to a second preset temperature, the method further comprises:
and if the first coil temperature is higher than the second preset temperature, determining that the target adjustment mode is to control the compressor to reduce the frequency.
4. The air conditioning control method as set forth in claim 3, wherein when the first coil temperature is greater than the second preset temperature, before the step of determining the target adjustment manner to control the compressor to reduce the frequency, further comprising:
judging whether the current rotating speed of the fan is greater than or equal to a first preset rotating speed or not;
if the current rotating speed of the fan is greater than or equal to the first preset rotating speed, the step of determining the target adjusting mode to control the frequency reduction of the compressor is executed;
and if the current rotating speed of the fan is less than the first preset rotating speed, determining that the target adjusting mode is to control the fan to increase the rotating speed.
5. The air conditioning control method as set forth in claim 3, wherein when the first coil temperature is greater than the second preset temperature, before the step of determining the target adjustment manner to control the compressor to reduce the frequency, further comprising:
judging whether the temperature of the first coil is less than or equal to a third preset temperature, wherein the third preset temperature is greater than the second preset temperature;
if the first coil temperature is less than or equal to the third preset temperature, executing the step of determining the target adjustment mode as controlling the reduction frequency of the compressor;
and if the first coil temperature is higher than the third preset temperature, determining that the target adjustment mode comprises controlling the compressor to stop running.
6. The air conditioning control method according to claim 5, wherein the determining the target adjustment manner includes controlling the compressor to stop operating includes:
and determining the target adjusting mode to be that the compressor is controlled to stop running and the fan is controlled to be closed after running for a preset time.
7. An air conditioning control device characterized by comprising: a memory, a processor and an air conditioning control program stored on the memory and executable on the processor, the air conditioning control program when executed by the processor implementing the steps of the air conditioning control method of any one of claims 1 to 6.
8. An air conditioner characterized by comprising the air conditioning control device according to claim 7.
9. A readable storage medium, having stored thereon an air conditioning control program, which when executed by a processor, implements the steps of the air conditioning control method according to any one of claims 1 to 6.
CN201910563344.6A 2019-06-26 2019-06-26 Air conditioner, air conditioner control method and device and readable storage medium Active CN110207314B (en)

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