CN112283863A - Self-cleaning control method and device for air conditioner external unit, storage medium and air conditioner - Google Patents

Self-cleaning control method and device for air conditioner external unit, storage medium and air conditioner Download PDF

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Publication number
CN112283863A
CN112283863A CN202010994607.1A CN202010994607A CN112283863A CN 112283863 A CN112283863 A CN 112283863A CN 202010994607 A CN202010994607 A CN 202010994607A CN 112283863 A CN112283863 A CN 112283863A
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China
Prior art keywords
heat exchanger
air conditioner
controlling
outer machine
preset
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Chinese (zh)
Inventor
崔天伟
熊硕
王潇君
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN202010994607.1A priority Critical patent/CN112283863A/en
Publication of CN112283863A publication Critical patent/CN112283863A/en
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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
    • 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
    • F24F11/46—Improving electric energy efficiency or saving
    • 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
    • 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
    • F24F11/62—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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/22—Cleaning ducts or apparatus

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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 provides a self-cleaning control method and device for an air conditioner external unit, a storage medium and an air conditioner, wherein the method comprises the following steps: when a control instruction for carrying out external unit self-cleaning is received, detecting the outdoor environment temperature; controlling the air conditioner to enter an external machine self-cleaning mode according to the detected outdoor environment temperature; the outer machine self-cleaning mode includes: a non-startup cleaning mode and a startup cleaning mode; if the outdoor environment temperature is higher than a preset target temperature value, controlling the air conditioner to enter a non-starting cleaning mode; and if the outdoor environment temperature is less than or equal to a preset target temperature value, controlling the air conditioner to enter a starting cleaning mode. The scheme provided by the invention can be used for removing dust on the heat exchanger of the external machine and improving the heat exchange efficiency of the heat exchanger.

Description

Self-cleaning control method and device for air conditioner external unit, storage medium and air conditioner
Technical Field
The invention relates to the field of control, in particular to a self-cleaning control method and device for an air conditioner external unit, a storage medium and an air conditioner.
Background
After the air conditioner outdoor unit is used for a long time, dust, fallen leaves and the like are easily adhered to the air conditioner outdoor unit, the heat exchange efficiency of the heat exchanger is reduced, the heat exchange effect is poor, and the energy consumption is increased.
Disclosure of Invention
The invention mainly aims to overcome the defects of the prior art and provides a self-cleaning control method and device for an air conditioner external unit, a storage medium and an air conditioner, so as to solve the problem that the heat exchange efficiency is reduced because the air conditioner external unit is easy to be stuck with dust after being used for a long time in the prior art.
The invention provides a self-cleaning control method for an air conditioner outdoor unit, which comprises the following steps: when a control instruction for carrying out external unit self-cleaning is received, detecting the outdoor environment temperature; controlling the air conditioner to enter an external machine self-cleaning mode according to the detected outdoor environment temperature; the outer machine self-cleaning mode includes: a non-startup cleaning mode and a startup cleaning mode; if the outdoor environment temperature is higher than a preset target temperature value, controlling the air conditioner to enter a non-starting cleaning mode; and if the outdoor environment temperature is less than or equal to a preset target temperature value, controlling the air conditioner to enter a starting cleaning mode.
Optionally, controlling the air conditioner to enter a non-start-up cleaning mode includes: controlling an outer fan of the air conditioner to reversely rotate so as to reversely blow air from an air outlet of the outer unit and blow off dirt on a heat exchanger of the outer unit; and/or, controlling the air conditioner to enter the starting cleaning mode specifically comprises: controlling the air conditioner to operate in a heating mode so as to enter a frosting stage of an outer machine heat exchanger to frost the outer machine heat exchanger; and exiting the frosting stage after the preset conditions are met, and entering the defrosting stage of the outer machine heat exchanger to defrost the outer machine heat exchanger.
Optionally, controlling the air conditioner to operate in the heating mode to enter a frosting stage of the external unit heat exchanger includes: controlling the inner fan to operate according to a preset wind gear, controlling the outer fan not to operate, reversing the four-way valve, and operating a heating mode; controlling the compressor to operate according to a first set target frequency, and adjusting the electronic expansion valve to a preset opening degree; after the compressor runs for a second preset time, the running frequency of the compressor is adjusted according to the temperature of the outer machine heat exchanger; and/or the preset conditions comprise: when the running time of the frosting stage reaches a preset frosting time, the temperature of the outer machine heat exchanger is less than or equal to a third preset temperature value and lasts for a third preset time, or the temperature of the outer machine heat exchanger is less than or equal to a fourth preset temperature value; and/or entering a defrosting stage of an external machine heat exchanger to defrost the external machine heat exchanger, wherein the defrosting stage comprises the following steps: after entering the defrosting stage of the outer machine heat exchanger, the compressor, the inner fan, the outer fan and the four-way valve stop running; when the outdoor environment temperature is greater than or equal to a fifth preset temperature value and the compressor stops for a fourth preset time, controlling an outer fan of the air conditioner to reversely rotate so as to reversely blow air from an air outlet of the outer unit and blow away dirt on a heat exchanger of the outer unit; and when the outdoor environment temperature is lower than a fifth preset temperature value, controlling the air conditioner to operate in a refrigeration mode so as to enter a defrosting stage of the outer machine heat exchanger to defrost the outer machine heat exchanger.
Optionally, adjusting the operating frequency of the compressor according to the temperature of the external unit heat exchanger includes: when the temperature of the outer machine heat exchanger is greater than or equal to a first preset temperature value, controlling the compressor to keep the first set target frequency to operate; when the temperature of the outer machine heat exchanger is greater than a second preset temperature value and less than a first preset temperature value, controlling the compressor to operate according to a second set target frequency; when the temperature of the outer machine heat exchanger is less than or equal to a second preset temperature value, controlling the compressor to operate according to a third set target frequency; wherein the first set target frequency is greater than the second set target frequency is greater than the third set target frequency; and/or controlling the air conditioner to operate in a refrigeration mode so as to enter a defrosting stage of an external unit heat exchanger, wherein the defrosting stage comprises the following steps: controlling the inner fan to stop running, and controlling the compressor to run according to a fourth set target frequency; after the air conditioner runs for a sixth preset time, controlling an outer fan of the air conditioner to rotate reversely so as to blow air reversely from an air outlet of the outer machine and blow away dirt on a heat exchanger of the outer machine; and/or when the temperature of the outer machine heat exchanger is greater than a sixth preset temperature value or the running time of the defrosting stage reaches a seventh preset time, the defrosting stage is exited.
In another aspect, the present invention provides a self-cleaning control device for an external unit of an air conditioner, including: the detection unit is used for detecting the outdoor environment temperature when receiving a control instruction for carrying out the self-cleaning of the outdoor unit; the control unit is used for controlling the air conditioner to enter an external machine self-cleaning mode according to the outdoor environment temperature detected by the detection unit; the outer machine self-cleaning mode includes: a non-startup cleaning mode and a startup cleaning mode; if the outdoor environment temperature is higher than a preset target temperature value, controlling the air conditioner to enter a non-starting cleaning mode; and if the outdoor environment temperature is less than or equal to a preset target temperature value, controlling the air conditioner to enter a starting cleaning mode.
Optionally, the controlling unit controls the air conditioner to enter a non-start-up cleaning mode, including: controlling an outer fan of the air conditioner to reversely rotate so as to reversely blow air from an air outlet of the outer unit and blow off dirt on a heat exchanger of the outer unit; and/or the control unit specifically controls the air conditioner to enter the startup cleaning mode to comprise: controlling the air conditioner to operate in a heating mode so as to enter a frosting stage of an outer machine heat exchanger to frost the outer machine heat exchanger; and exiting the frosting stage after the preset conditions are met, and entering the defrosting stage of the outer machine heat exchanger to defrost the outer machine heat exchanger.
Optionally, the controlling unit, which controls the air conditioner to operate in the heating mode to enter a frosting stage of the external unit heat exchanger, includes: controlling the inner fan to operate according to a preset wind gear, controlling the outer fan not to operate, reversing the four-way valve, and operating a heating mode; controlling the compressor to operate according to a first set target frequency, and adjusting the electronic expansion valve to a preset opening degree; after the compressor runs for a second preset time, the running frequency of the compressor is adjusted according to the temperature of the outer machine heat exchanger; and/or the preset conditions comprise: when the running time of the frosting stage reaches a preset frosting time, the temperature of the outer machine heat exchanger is less than or equal to a third preset temperature value and lasts for a third preset time, or the temperature of the outer machine heat exchanger is less than or equal to a fourth preset temperature value; and/or the control unit enters a defrosting stage of the outer machine heat exchanger to defrost the outer machine heat exchanger, and the defrosting stage comprises the following steps: after entering the defrosting stage of the outer machine heat exchanger, the compressor, the inner fan, the outer fan and the four-way valve stop running; when the outdoor environment temperature is greater than or equal to a fifth preset temperature value and the compressor stops for a fourth preset time, controlling an outer fan of the air conditioner to reversely rotate so as to reversely blow air from an air outlet of the outer unit and blow away dirt on a heat exchanger of the outer unit; and when the outdoor environment temperature is lower than a fifth preset temperature value, controlling the air conditioner to operate in a refrigeration mode so as to enter a defrosting stage of the outer machine heat exchanger to defrost the outer machine heat exchanger.
Optionally, the controlling unit, which adjusts the operating frequency of the compressor according to the temperature of the external machine heat exchanger, includes: when the temperature of the outer machine heat exchanger is greater than or equal to a first preset temperature value, controlling the compressor to keep the first set target frequency to operate; when the temperature of the outer machine heat exchanger is greater than a second preset temperature value and less than a first preset temperature value, controlling the compressor to operate according to a second set target frequency; when the temperature of the outer machine heat exchanger is less than or equal to a second preset temperature value, controlling the compressor to operate according to a third set target frequency; wherein the first set target frequency is greater than the second set target frequency is greater than the third set target frequency; and/or the control unit controls the air conditioner to operate in a refrigeration mode so as to enter a defrosting stage of an external unit heat exchanger, and the control unit comprises: controlling the inner fan to stop running, and controlling the compressor to run according to a fourth set target frequency; after the air conditioner runs for a sixth preset time, controlling an outer fan of the air conditioner to rotate reversely so as to blow air reversely from an air outlet of the outer machine and blow away dirt on a heat exchanger of the outer machine; and/or when the temperature of the outer machine heat exchanger is greater than a sixth preset temperature value or the running time of the defrosting stage reaches a seventh preset time, the defrosting stage is exited.
A further aspect of the invention provides a storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of any of the methods described above.
Yet another aspect of the present invention provides an air conditioner comprising a processor, a memory, and a computer program stored on the memory and operable on the processor, wherein the processor implements the steps of any of the methods described above when executing the program.
The invention further provides an air conditioner, which comprises the self-cleaning control device for the outdoor unit of the air conditioner.
According to the technical scheme of the invention, the air conditioner is controlled to enter the non-starting cleaning mode or the starting cleaning mode according to the outdoor environment temperature, so that dust, fallen leaves and the like on the condenser of the outdoor unit can be removed, the heat exchange efficiency of the condenser is improved, and the effects of energy conservation and electricity conservation are achieved; the non-starting cleaning mode blows away dust, fallen leaves and other dirt on the condenser through the reverse rotation of the outer fan, and the starting cleaning mode enables the condenser fins to be frosted through the operation heating mode and removes the dust through the defrosting process. The evaporation temperature of the condenser is controlled through the frequency of the compressor, and the frosting effect of the condenser fins is improved. According to the technical scheme of the invention, an extra tool or a professional is not needed to clean the air conditioner, so that the cost is saved. According to the technical scheme of the invention, the problem that the refrigerating and heating capacity of the air conditioner is reduced after the air conditioner is used for a long time can be solved, the heat exchange efficiency of the air conditioner is improved, the energy consumption of the air conditioner is reduced, and the electricity is saved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram illustrating a method of an embodiment of a self-cleaning control method for an external unit of an air conditioner according to the present invention;
fig. 2 is a schematic diagram of the arrangement position of a temperature sensing bulb or a temperature sensor for detecting the temperature of an outer machine heat exchanger;
fig. 3 is a schematic diagram illustrating a method of an embodiment of a self-cleaning control method for an external unit of an air conditioner according to the present invention;
fig. 4 is a block diagram illustrating an embodiment of a self-cleaning control device for an outdoor unit of an air conditioner according to the present invention.
Detailed Description
In order to make 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 specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention provides a self-cleaning control method for an air conditioner external unit.
The self-cleaning control method of the air conditioner external unit can be used for a heat pump air conditioner unit. The heat pump air conditioning unit comprises a compressor, an indoor unit, an outdoor unit, a four-way valve, an inner fan, an outer fan, an inner unit controller and an outer unit controller, and the four-way valve can be used for realizing the refrigerating operation and the heating operation of the air conditioner. Outer quick-witted heat exchanger temperature T can be detected to outer quick-witted controllerOuter tubeOutdoor environment temperatureThe degree Tw can control the running frequency of the compressor, the opening degree of the electronic expansion valve, the rotating speed of the external fan and the like. Wherein, the temperature T of the heat exchanger of the external machine is detectedOuter tubeThe thermal bulb 1 or the temperature sensor can be fixed at the position of a branch outlet 2 of the refrigerant device, and can be referred to as the figure 2.
Fig. 1 is a schematic method diagram illustrating an embodiment of a method for controlling self-cleaning of an external unit of an air conditioner according to the present invention.
As shown in fig. 1, according to an embodiment of the present invention, the control method includes at least step S110 and step S130.
And step S110, detecting the outdoor environment temperature when receiving the control instruction for carrying out the self-cleaning of the outdoor unit.
And step S120, controlling the air conditioner to enter an external unit self-cleaning mode according to the detected outdoor environment temperature.
Specifically, when a control signal for performing the outer unit self-cleaning (i.e., a control command for performing the outer unit self-cleaning) transmitted through a remote controller or a control panel is received, the outdoor environment temperature starts to be detected. For example, after the air conditioner is powered on, when the internal unit controller receives an external unit self-cleaning signal transmitted by the remote controller, the external unit controller starts to detect the outer ring temperature TW, and determines to enter an external unit self-cleaning control mode according to the outer ring temperature at this time. The outer machine self-cleaning mode includes: a non-power-on cleaning mode and a power-on cleaning mode. The air conditioner is in a non-starting cleaning mode, namely an outer fan of the air conditioner is controlled to rotate reversely, so that air is blown into an inner unit reversely from an air outlet of the outer unit, and dirt (such as dust, fallen leaves and other foreign matters) on a heat exchanger of the outer unit is blown off; and a starting cleaning mode, namely controlling the air conditioner to firstly run a heating mode to frost the outer machine heat exchanger, then defrosting the outer machine heat exchanger, combining a frost layer with dirt such as dust on the surface of the heat exchanger through frosting, peeling off the dirt, and then defrosting to lead the dirt such as the dust to be carried away by defrosting water.
If the outdoor environment temperature is higher than a preset target temperature value, controlling the air conditioner to enter a non-starting cleaning mode; and if the outdoor environment temperature is less than or equal to a preset target temperature value, controlling the air conditioner to enter a starting cleaning mode.
Under the high-temperature environment temperature, when the air conditioner operates the heating mode, the heating quantity is large, the pressure of the indoor unit is easily overhigh, and the indoor unit is shut down to be protected, so that under the high-temperature working condition, namely the outdoor environment temperature is higher than the preset target temperature value, the air conditioner can not operate the heating mode, and then the air conditioner enters the non-starting cleaning mode. And controlling the air conditioner to enter a starting cleaning mode under the condition that the outdoor environment temperature is less than or equal to a preset target temperature value. For example, the preset target temperature value Tc is, for example, 30 ℃, when the outer ring temperature Tw is greater than the preset target temperature value Tc (30 ℃), the air conditioner enters off-start cleaning, and when Tw is not greater than the preset target temperature value Tc (30 ℃), the air conditioner enters on-start self cleaning, and the frosting and the defrosting are divided into two stages.
The step of controlling the air conditioner to enter the non-starting cleaning mode specifically comprises the following steps: and controlling an outer fan of the air conditioner to reversely rotate so as to reversely blow air from an air outlet of the outer unit and blow off dirt (such as dust, fallen leaves and other foreign matters) on the heat exchanger of the outer unit. Optionally, after the external fan of the air conditioner is controlled to rotate reversely for a first preset time, the non-starting cleaning mode is exited.
For example, when the outdoor environment temperature Tw is greater than the preset target temperature value Tc (e.g., 30 ℃), the air conditioner enters the non-start-up cleaning mode, the inner fan, the compressor, and the four-way valve are not actuated, the outer fan is controlled to run in reverse, dust or foreign matter on the condenser is blown away from the air outlet of the air conditioner outdoor unit in reverse, and the outer fan stops running after a first preset time T1 (e.g., 5min) is reached. The whole machine quits self-cleaning and is controlled to execute according to a normal mode.
The step of controlling the air conditioner to enter the starting cleaning mode specifically comprises the following steps: controlling the air conditioner to operate in a heating mode so as to enter a frosting stage of an outer machine heat exchanger to frost the outer machine heat exchanger; and after the preset conditions are met, the frosting stage is taken out, and the defrosting stage of the outer machine heat exchanger is carried out, so that the outer machine heat exchanger is defrosted. The frost layer is combined with dirt such as dust on the surface of the outer machine heat exchanger through frosting and is peeled off, and then the dirt such as the dust is brought away by the frosting water through defrosting.
Controlling the air conditioner to operate in a heating mode so as to enter a frosting stage of the outer machine heat exchanger, wherein the frosting stage specifically comprises the following steps: controlling the inner fan to operate according to a preset wind gear, controlling the outer fan not to operate, reversing the four-way valve, and operating a heating mode; controlling the compressor to operate according to a first set frequency, and adjusting the electronic expansion valve to a preset opening degree; and after the compressor runs for a second preset time, the running frequency of the compressor is adjusted according to the temperature of the outer machine heat exchanger.
When the temperature of the outer machine heat exchanger is greater than or equal to a first preset temperature value, controlling the compressor to keep the first set target frequency to operate; when the temperature of the outer machine heat exchanger is greater than a second preset temperature value and less than a first preset temperature value, controlling the compressor to operate according to a second set target frequency; when the temperature of the outer machine heat exchanger is less than or equal to a second preset temperature value, controlling the compressor to operate according to a third set target frequency; the first set target frequency is greater than the second set target frequency is greater than the third set target frequency.
For example, the air conditioner enters a heating mode, the inner fan operates according to an ultra-strong wind gear (a preset wind gear), the four-way valve operates in a reversing mode, and the outer fan does not operate. The compressor is operated at a first set target frequency F1 (e.g. 60Hz), the electronic expansion valve is adjusted at a preset opening P1 (e.g. 200B), and the operation time reaches a second preset time T2 (e.g. 3min), and then the detection of the temperature of the outer machine heat exchanger, e.g. the temperature of the outer pipe TOuter tubeThe running frequency of the compressor is adjusted according to the temperature value of the outer pipe, wherein the first preset temperature value is minus 10 ℃, and the second preset temperature value is minus 20 ℃.
When T isOuter tubeWhen the temperature is more than or equal to-10 ℃, the running frequency of the compressor is kept unchanged and is executed according to F1; when the temperature is higher than-10 ℃ and is higher than TOuter tube> -20 deg.C, the compressor operating frequency is performed at a second set target frequency F2 (e.g., 50 Hz); when T isOuter tubeAt ≦ 20 deg.C, the compressor operating frequency is executed at a third set target frequency F3 (e.g., 30 Hz). Wherein, the frequency value magnitude relation F1>F2>F3。
When the surface temperature of the fin is lower than the current ambient dew point temperature, moisture in the air can frost on the fin. The outer tube temperature is used as a fin surface temperature detection means, the outer tube temperature is monitored, the compressor is controlled to operate at different frequencies to control the refrigerant evaporation temperature, the refrigerant evaporation temperature is controlled within a certain range, the fins are frosted, and the compressor cannot be damaged due to the fact that the evaporation pressure is too low.
The preset conditions required to be met for exiting the frosting stage include: and when the running time of the frosting stage reaches the preset frosting time, the temperature of the outer machine heat exchanger is less than or equal to a third preset temperature value and lasts for a third preset time, or the temperature of the outer machine heat exchanger is less than or equal to a fourth preset temperature value. When any one of the conditions is met, the water produced by the frosting thickness on the condenser (the outer machine heat exchanger) during defrosting can meet the condition of cleaning the condenser (can be measured through experiments), and the frosting stage can be quitted. When the defrosting is stopped, the compressor, the internal and external fans and the four-way valve stop running and enter a defrosting stage.
For example, the third preset temperature value is-20 deg.C, and the fourth preset temperature value is-40 deg.C.
And (3) meeting any one of the following conditions, exiting the frosting stage and entering the defrosting stage:
1. the running time reaches the preset frosting time TFrosting(e.g., 10 minutes);
2.Touter tubeAt the temperature of less than or equal to-20 ℃ and the duration time reaches 3 min;
3.Touter tubeThe frosting stage is immediately withdrawn at the temperature of less than or equal to minus 40 ℃.
After entering the defrosting stage of the outer machine heat exchanger, when the outdoor environment temperature Tw is high, the frost on the outer machine heat exchanger can absorb heat from the environment temperature to melt, and when the outdoor environment temperature Tw is low, the air conditioner operates in a refrigeration mode to defrost the outer machine heat exchanger.
Specifically, after entering a defrosting stage of an outer machine heat exchanger, when the outdoor environment temperature is greater than or equal to a fifth preset temperature value, and after the compressor is stopped for a fourth preset time, controlling an outer fan of the air conditioner to reversely rotate so as to reversely blow air from an air outlet of the outer machine and blow away dirt on the outer machine heat exchanger; and after the fifth preset time, controlling the outer fan to stop running and exiting the defrosting stage. The reverse blowing can enhance the cleaning effect, blow away foreign matters such as dust and fallen leaves, and avoid the dust from accumulating at the lower part of the condenser (an outer machine heat exchanger) along with the water flow. And when the outdoor environment temperature is lower than a fifth preset temperature value, controlling the air conditioner to operate in a refrigeration mode so as to enter a defrosting stage of the outer machine heat exchanger to defrost the outer machine heat exchanger. Wherein, control air conditioner operation refrigeration mode to the defrosting stage that gets into outer quick-witted heat exchanger specifically includes: controlling the inner fan to stop running, and controlling the compressor to run according to a fourth set target frequency; after the air conditioner runs for a sixth preset time, controlling an outer fan of the air conditioner to rotate reversely so as to blow air reversely from an air outlet of the outer machine and blow away dirt on a heat exchanger of the outer machine; and when the temperature of the outer machine heat exchanger is greater than a sixth preset temperature value or the running time of the defrosting stage reaches a seventh preset time, the defrosting stage is exited. The reverse blowing can enhance the cleaning effect, blow away foreign matters such as dust and fallen leaves, and avoid the dust from accumulating at the lower part of the condenser (an outer machine heat exchanger) along with the water flow.
For example, the fifth preset temperature value is 10 ℃, the fourth preset time is 1 minute, the fifth preset time is 5 minutes, the sixth preset time is 2 minutes, the seventh preset time is 5 minutes, and the sixth preset temperature is 15 ℃. When Tw is more than or equal to 10 ℃, the compressor stops for 1 minute, the outer fan starts to rotate reversely to blow air reversely to blow dirt away from the condenser, and after the duration time reaches 5 minutes, the outer fan stops operating and exits from the defrosting stage. When Tw is less than 10 ℃, the air conditioner operates in a refrigeration mode, the inner fan stops operating, the compressor operates according to a fourth set target frequency F4(70Hz), and after the compressor continuously operates for 2 minutes, the outer fan starts to reversely rotate to blow air reversely, so that dirt is blown away from the condenser. When T is satisfiedOuter tubeAbove 15 c or for a duration of 5 minutes (seventh preset time, time to melt frost from the condenser, experimentally measured), and exit the defrosting stage. And when the defrosting stage is quitted, the execution of the self-cleaning mode of the external machine is finished, and the whole machine is normally controlled and executed.
For clearly explaining the technical solution of the present invention, an execution flow of the method for controlling self-cleaning of an external unit of an air conditioner according to the present invention is described below with an embodiment.
Fig. 3 is a schematic diagram illustrating a method of controlling self-cleaning of an external unit of an air conditioner according to an embodiment of the present invention. As shown in fig. 3, after the air conditioner is powered on, when the internal unit controller receives an external unit self-cleaning signal transmitted by the remote controller, the external unit controller starts to detect the outer ring temperature Tw, and determines to enter an external unit self-cleaning control mode according to the outer ring temperature at this time. The self-cleaning control mode of the external machine has two control modes, namely non-startup cleaning and startup cleaning.
When the temperature Tw of the outer ring is greater than the preset target temperature value Tc, the air conditioner is not started for cleaning, the inner fan, the compressor and the four-way valve do not act, the outer fan runs reversely, dirt such as dust on the condenser is blown off in the reverse direction of the air outlet of the air conditioner outer unit, and the outer fan stops running after the first preset time T1 is reached. The whole machine quits self-cleaning and is controlled to execute according to a normal mode. When Tw is not greater than the preset target temperature value Tc, the air conditioner starts to self-clean and is divided into two frosting stages and defrosting stages. And (3) frosting stage: the air conditioner enters a heating mode, the inner fan runs according to the super-strong wind gear, the four-way valve acts in a reversing mode, and the outer fan does not run. The compressor operates according to a first set target frequency F1, the electronic expansion valve is adjusted according to a preset opening degree P1, and after the operation reaches a second preset time T2, the detection of the temperature T of the outer pipe is startedOuter tubeThe running frequency of the compressor is adjusted according to the temperature value of the outer pipe,
after meeting the condition of exiting the frosting stage, exiting the frosting stage and entering the defrosting stage; and (3) defrosting: when Tw is more than or equal to 10 ℃, the compressor stops for 1 minute, the outer fan starts to rotate reversely to blow air reversely, and dirt is blown away from the condenser; when Tw is less than 10 ℃, the air conditioner operates in a refrigeration mode, the inner fan stops operating, the compressor operates according to a set target frequency F4, and after the compressor continuously operates for 2 minutes, the outer fan starts to rotate reversely to blow air reversely, so that dirt is blown away from the condenser; after meeting the condition of quitting the defrosting stage, quitting the defrosting stage; and when the defrosting is quitted, the execution of the self-cleaning mode of the external machine is finished, and the whole machine is normally controlled and executed.
The invention also provides a self-cleaning control device of the air conditioner external unit.
The self-cleaning control device of the air conditioner external unit can be used for a heat pump air conditioner unit. The heat pump air conditioning unit comprises a compressor, an indoor unit, an outdoor unit, a four-way valve, an inner fan, an outer fan, an inner unit controller and an outer unit controller, wherein the four units are respectively connected with the compressor, the indoor unit, the outdoor unit, the four-way valve, the inner fan, the outer fan, the inner unit controller andthe through valve can realize the cooling operation and the heating operation of the air conditioner. Outer quick-witted heat exchanger temperature T can be detected to outer quick-witted controllerOuter tubeAnd the outdoor environment temperature Tw, the running frequency of the compressor, the opening of the electronic expansion valve, the rotating speed of the external fan and the like can be controlled. Wherein, the temperature T of the heat exchanger of the external machine is detectedOuter tubeThe thermal bulb 1 or the temperature sensor can be fixed at the position of a branch outlet 2 of the refrigerant device, and can be referred to as the figure 2.
Fig. 4 is a block diagram illustrating an embodiment of a self-cleaning control device for an outdoor unit of an air conditioner according to the present invention. As shown in fig. 4, the control device 100 includes a detection unit 110 and a control unit 120.
The detection unit 110 is configured to detect an outdoor environment temperature when receiving a control command for performing the external unit self-cleaning. The control unit 120 is configured to control the air conditioner to enter an external unit self-cleaning mode according to the outdoor environment temperature detected by the detection unit.
Specifically, when receiving a control signal for performing the outer unit self-cleaning (i.e., a control command for performing the outer unit self-cleaning) transmitted through a remote controller or a control panel, the detection unit 110 starts to detect the outdoor ambient temperature. For example, after the air conditioner is powered on, when the internal unit controller receives an external unit self-cleaning signal transmitted by the remote controller, the external unit controller starts to detect the outer ring temperature Tw, and the external unit controller determines to enter an external unit self-cleaning control mode according to the outer ring temperature at this time. The outer machine self-cleaning mode includes: a non-power-on cleaning mode and a power-on cleaning mode. The air conditioner is in a non-starting cleaning mode, namely an outer fan of the air conditioner is controlled to rotate reversely, so that air is blown into an inner unit reversely from an air outlet of the outer unit, and dirt (such as dust, fallen leaves and other foreign matters) on a heat exchanger of the outer unit is blown off; and a starting cleaning mode, namely controlling the air conditioner to firstly run a heating mode to frost the outer machine heat exchanger, then defrosting the outer machine heat exchanger, combining a frost layer with dirt such as dust on the surface of the heat exchanger through frosting, peeling off the dirt, and then defrosting to lead the dirt such as the dust to be carried away by defrosting water.
If the outdoor environment temperature is higher than the preset target temperature value, the control unit 120 controls the air conditioner to enter a non-starting cleaning mode; if the outdoor environment temperature is less than or equal to a preset target temperature value, the control unit 120 controls the air conditioner to enter a start-up cleaning mode.
Under the high-temperature environment temperature, when the air conditioner operates the heating mode, the heating quantity is large, the pressure of the indoor unit is easily overhigh, and the indoor unit is shut down to be protected, so that under the high-temperature working condition, namely the outdoor environment temperature is higher than the preset target temperature value, the air conditioner can not operate the heating mode, and then the air conditioner enters the non-starting cleaning mode. And controlling the air conditioner to enter a starting cleaning mode under the condition that the outdoor environment temperature is less than or equal to a preset target temperature value. For example, the preset target temperature value Tc is, for example, 30 ℃, when the outer ring temperature Tw is greater than the preset target temperature value Tc (30 ℃), the air conditioner enters off-start cleaning, and when Tw is not greater than the preset target temperature value Tc (30 ℃), the air conditioner enters on-start self cleaning, and the frosting and the defrosting are divided into two stages.
The step of controlling the air conditioner to enter the non-starting cleaning mode by the control unit 120 specifically includes: and controlling an outer fan of the air conditioner to reversely rotate so as to reversely blow air from an air outlet of the outer unit and blow off dirt (such as dust, fallen leaves and other foreign matters) on the heat exchanger of the outer unit. Optionally, after the external fan of the air conditioner is controlled to rotate reversely for a first preset time, the non-starting cleaning mode is exited.
For example, when the outdoor environment temperature Tw is greater than the preset target temperature value Tc (e.g., 30 ℃), the air conditioner enters the non-start-up cleaning mode, the inner fan, the compressor, and the four-way valve are not actuated, the outer fan is controlled to run in reverse, dust or foreign matter on the condenser is blown away from the air outlet of the air conditioner outdoor unit in reverse, and the outer fan stops running after a first preset time T1 (e.g., 5min) is reached. The whole machine quits self-cleaning and is controlled to execute according to a normal mode.
The step of the control unit 120 controlling the air conditioner to enter the start-up cleaning mode specifically includes: controlling the air conditioner to operate in a heating mode so as to enter a frosting stage of an outer machine heat exchanger to frost the outer machine heat exchanger; and after the preset conditions are met, the frosting stage is taken out, and the defrosting stage of the outer machine heat exchanger is carried out, so that the outer machine heat exchanger is defrosted. The frost layer is combined with dirt such as dust on the surface of the outer machine heat exchanger through frosting and is peeled off, and then the dirt such as the dust is brought away by the frosting water through defrosting.
The control unit 120 controls the air conditioner to operate in the heating mode, so as to enter a frosting stage of the external unit heat exchanger, which specifically includes: controlling the inner fan to operate according to a preset wind gear, controlling the outer fan not to operate, reversing the four-way valve, and operating a heating mode; controlling the compressor to operate according to a first set frequency, and adjusting the electronic expansion valve to a preset opening degree; and after the compressor runs for a second preset time, the running frequency of the compressor is adjusted according to the temperature of the outer machine heat exchanger.
When the temperature of the outer machine heat exchanger is greater than or equal to a first preset temperature value, controlling the compressor to keep the first set target frequency to operate; when the temperature of the outer machine heat exchanger is greater than a second preset temperature value and less than a first preset temperature value, controlling the compressor to operate according to a second set target frequency; when the temperature of the outer machine heat exchanger is less than or equal to a second preset temperature value, controlling the compressor to operate according to a third set target frequency; the first set target frequency is greater than the second set target frequency is greater than the third set target frequency.
For example, the air conditioner enters a heating mode, the inner fan operates according to an ultra-strong wind gear (a preset wind gear), the four-way valve operates in a reversing mode, and the outer fan does not operate. The compressor is operated at a first set target frequency F1 (e.g. 60Hz), the electronic expansion valve is adjusted at a preset opening P1 (e.g. 200B), and the operation time reaches a second preset time T2 (e.g. 3min), and then the detection of the temperature of the outer machine heat exchanger, e.g. the temperature of the outer pipe TOuter tubeThe running frequency of the compressor is adjusted according to the temperature value of the outer pipe, wherein the first preset temperature value is minus 10 ℃, and the second preset temperature value is minus 20 ℃.
When T isOuter tubeWhen the temperature is more than or equal to-10 ℃, the running frequency of the compressor is kept unchanged and is executed according to F1; when the temperature is higher than-10 ℃ and is higher than TOuter tube> -20 deg.C, the compressor operating frequency is performed at a second set target frequency F2 (e.g., 50 Hz); when T isOuter tubeAt ≦ 20 deg.C, the compressor operating frequency is executed at a third set target frequency F3 (e.g., 30 Hz). Wherein, the frequency value magnitude relation F1>F2>F3。
When the surface temperature of the fin is lower than the current ambient dew point temperature, moisture in the air can frost on the fin. The outer tube temperature is used as a fin surface temperature detection means, the outer tube temperature is monitored, the compressor is controlled to operate at different frequencies to control the refrigerant evaporation temperature, the refrigerant evaporation temperature is controlled within a certain range, the fins are frosted, and the compressor cannot be damaged due to the fact that the evaporation pressure is too low.
The preset conditions required to be met for exiting the frosting stage include: and when the running time of the frosting stage reaches the preset frosting time, the temperature of the outer machine heat exchanger is less than or equal to a third preset temperature value and lasts for a third preset time, or the temperature of the outer machine heat exchanger is less than or equal to a fourth preset temperature value. When any one of the conditions is met, the water produced by the frosting thickness on the condenser (the outer machine heat exchanger) during defrosting can meet the condition of cleaning the condenser (can be measured through experiments), and the frosting stage can be quitted. When the defrosting is stopped, the compressor, the internal and external fans and the four-way valve stop running and enter a defrosting stage.
For example, the third preset temperature value is-20 deg.C, and the fourth preset temperature value is-40 deg.C.
And (3) meeting any one of the following conditions, exiting the frosting stage and entering the defrosting stage:
1. the running time reaches the preset frosting time TFrosting(e.g., 10 minutes);
2.Touter tubeAt the temperature of less than or equal to-20 ℃ and the duration time reaches 3 min;
3.Touter tubeImmediately exiting the frosting stage at the temperature of less than or equal to-40 ℃;
after entering the defrosting stage of the outer machine heat exchanger, when the outdoor environment temperature Tw is high, the frost on the outer machine heat exchanger can absorb heat from the environment temperature to melt, and when the outdoor environment temperature Tw is low, the air conditioner operates in a refrigeration mode to defrost the outer machine heat exchanger.
Specifically, after entering a defrosting stage of an outer unit heat exchanger, when the outdoor environment temperature is greater than or equal to a fifth preset temperature value, and after the compressor is stopped for a fourth preset time, the control unit 120 controls an outer fan of the air conditioner to rotate reversely so as to blow air reversely from an air outlet of the outer unit and blow away dirt on the outer unit heat exchanger; and after the fifth preset time, controlling the outer fan to stop running and exiting the defrosting stage. The reverse blowing can enhance the cleaning effect, blow away foreign matters such as dust and fallen leaves, and avoid the dust from accumulating at the lower part of the condenser (an outer machine heat exchanger) along with the water flow. When the outdoor environment temperature is lower than the fifth preset temperature value, the control unit 120 controls the air conditioner to operate in the cooling mode to enter a defrosting stage of the outer unit heat exchanger, so that the outer unit heat exchanger is defrosted. Wherein, the control unit 120 controls the air conditioner to operate in the cooling mode to enter the defrosting stage of the external unit heat exchanger, which specifically includes: controlling the inner fan to stop running, and controlling the compressor to run according to a fourth set target frequency; after the air conditioner runs for a sixth preset time, controlling an outer fan of the air conditioner to rotate reversely so as to blow air reversely from an air outlet of the outer machine and blow away dirt on a heat exchanger of the outer machine; and when the temperature of the outer machine heat exchanger is greater than a sixth preset temperature value or the running time of the defrosting stage reaches a seventh preset time, the defrosting stage is exited.
For example, the fifth preset temperature value is 10 ℃, the fourth preset time is 1 minute, the fifth preset time is 5 minutes, the sixth preset time is 2 minutes, the seventh preset time is 5 minutes, and the sixth preset temperature is 15 ℃. When Tw is more than or equal to 10 ℃, the compressor stops for 1 minute, the outer fan starts to rotate reversely to blow air reversely to blow dirt away from the condenser, and after the duration time reaches 5 minutes, the outer fan stops operating and exits from the defrosting stage. When Tw is less than 10 ℃, the air conditioner operates in a refrigeration mode, the inner fan stops operating, the compressor operates according to a fourth set target frequency F4(70Hz), and after the compressor continuously operates for 2 minutes, the outer fan starts to reversely rotate to blow air reversely, so that dirt is blown away from the condenser. When T is satisfiedOuter tubeAbove 15 c or for a duration of 5 minutes (seventh preset time, time to melt frost from the condenser, experimentally measured), and exit the defrosting stage. And when the defrosting stage is quitted, the execution of the self-cleaning mode of the external machine is finished, and the whole machine is normally controlled and executed.
The invention also provides a storage medium corresponding to the self-cleaning control method of the outdoor unit of the air conditioner, and a computer program is stored on the storage medium, and when the computer program is executed by a processor, the steps of any one of the methods are realized.
The invention also provides an air conditioner corresponding to the self-cleaning control method of the outdoor unit of the air conditioner, which comprises a processor, a memory and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the steps of any one of the methods when executing the program.
The invention also provides an air conditioner corresponding to the self-cleaning control device of the air conditioner external unit, which comprises any one of the self-cleaning control devices of the air conditioner external unit.
Therefore, according to the scheme provided by the invention, the air conditioner is controlled to enter the non-starting cleaning mode or the starting cleaning mode according to the outdoor environment temperature, so that dust on the condenser of the outdoor unit can be removed, the heat exchange efficiency of the condenser is improved, and the energy-saving and power-saving effects are achieved; the non-starting cleaning mode blows away dust on the condenser through the reverse rotation of the external fan, and the starting cleaning mode enables the condenser fins to be frosted through the operation heating mode and removes the dust through the defrosting process. The evaporation temperature of the condenser is controlled through the frequency of the compressor, and the frosting effect of the condenser fins is improved. According to the technical scheme of the invention, an extra tool or a professional is not needed to clean the air conditioner, so that the cost is saved. According to the technical scheme of the invention, the problem that the refrigerating and heating capacity of the air conditioner is reduced after the air conditioner is used for a long time can be solved, the heat exchange efficiency of the air conditioner is improved, the energy consumption of the air conditioner is reduced, and the electricity is saved.
The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the invention and the following claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or a combination of any of these. In addition, each functional unit may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and the parts serving as the control device may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. 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 and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. A self-cleaning control method for an air conditioner outdoor unit is characterized by comprising the following steps:
when a control instruction for carrying out external unit self-cleaning is received, detecting the outdoor environment temperature;
controlling the air conditioner to enter an external machine self-cleaning mode according to the detected outdoor environment temperature;
the outer machine self-cleaning mode includes: a non-startup cleaning mode and a startup cleaning mode;
if the outdoor environment temperature is higher than a preset target temperature value, controlling the air conditioner to enter a non-starting cleaning mode; and if the outdoor environment temperature is less than or equal to a preset target temperature value, controlling the air conditioner to enter a starting cleaning mode.
2. The method of claim 1,
controlling the air conditioner to enter a non-starting cleaning mode, comprising:
controlling an outer fan of the air conditioner to reversely rotate so as to reversely blow air from an air outlet of the outer unit and blow off dirt on a heat exchanger of the outer unit;
and/or the presence of a gas in the gas,
the step of controlling the air conditioner to enter the starting cleaning mode specifically comprises the following steps:
controlling the air conditioner to operate in a heating mode so as to enter a frosting stage of an outer machine heat exchanger to frost the outer machine heat exchanger;
and exiting the frosting stage after the preset conditions are met, and entering the defrosting stage of the outer machine heat exchanger to defrost the outer machine heat exchanger.
3. The method of claim 2,
controlling the air conditioner to operate in a heating mode so as to enter a frosting stage of an external unit heat exchanger, wherein the frosting stage comprises the following steps:
controlling the inner fan to operate according to a preset wind gear, controlling the outer fan not to operate, reversing the four-way valve, and operating a heating mode;
controlling the compressor to operate according to a first set target frequency, and adjusting the electronic expansion valve to a preset opening degree;
after the compressor runs for a second preset time, the running frequency of the compressor is adjusted according to the temperature of the outer machine heat exchanger;
and/or the presence of a gas in the gas,
entering into the defrosting stage of an outer machine heat exchanger to defrost the outer machine heat exchanger, wherein the defrosting stage comprises the following steps:
after entering the defrosting stage of the outer machine heat exchanger, the compressor, the inner fan, the outer fan and the four-way valve stop running;
when the outdoor environment temperature is greater than or equal to a fifth preset temperature value and the compressor stops for a fourth preset time, controlling an outer fan of the air conditioner to reversely rotate so as to reversely blow air from an air outlet of the outer unit and blow away dirt on a heat exchanger of the outer unit;
and when the outdoor environment temperature is lower than a fifth preset temperature value, controlling the air conditioner to operate in a refrigeration mode so as to enter a defrosting stage of the outer machine heat exchanger to defrost the outer machine heat exchanger.
4. The method of claim 3,
adjusting the operating frequency of the compressor according to the temperature of the outer machine heat exchanger comprises:
when the temperature of the outer machine heat exchanger is greater than or equal to a first preset temperature value, controlling the compressor to keep the first set target frequency to operate;
when the temperature of the outer machine heat exchanger is greater than a second preset temperature value and less than a first preset temperature value, controlling the compressor to operate according to a second set target frequency;
when the temperature of the outer machine heat exchanger is less than or equal to a second preset temperature value, controlling the compressor to operate according to a third set target frequency;
wherein the first set target frequency is greater than the second set target frequency is greater than the third set target frequency;
and/or the presence of a gas in the gas,
controlling the air conditioner to operate in a refrigeration mode to enter a defrosting stage of an external unit heat exchanger, wherein the defrosting stage comprises the following steps:
controlling the inner fan to stop running, and controlling the compressor to run according to a fourth set target frequency; after the air conditioner runs for a sixth preset time, controlling an outer fan of the air conditioner to rotate reversely so as to blow air reversely from an air outlet of the outer machine and blow away dirt on a heat exchanger of the outer machine;
and/or the presence of a gas in the gas,
and when the temperature of the outer machine heat exchanger is greater than a sixth preset temperature value or the running time of the defrosting stage reaches a seventh preset time, the defrosting stage is exited.
5. An outer quick-witted automatically cleaning controlling means of air conditioner, its characterized in that includes:
the detection unit is used for detecting the outdoor environment temperature when receiving a control instruction for carrying out the self-cleaning of the outdoor unit;
the control unit is used for controlling the air conditioner to enter an external machine self-cleaning mode according to the outdoor environment temperature detected by the detection unit;
the outer machine self-cleaning mode includes: a non-startup cleaning mode and a startup cleaning mode;
if the outdoor environment temperature is higher than a preset target temperature value, controlling the air conditioner to enter a non-starting cleaning mode; and if the outdoor environment temperature is less than or equal to a preset target temperature value, controlling the air conditioner to enter a starting cleaning mode.
6. The apparatus of claim 5,
the control unit controls the air conditioner to enter a non-starting cleaning mode, and comprises:
controlling an outer fan of the air conditioner to reversely rotate so as to reversely blow air from an air outlet of the outer unit and blow off dirt on a heat exchanger of the outer unit;
and/or the presence of a gas in the gas,
the control unit controls the air conditioner to enter the starting cleaning mode and specifically comprises the following steps:
controlling the air conditioner to operate in a heating mode so as to enter a frosting stage of an outer machine heat exchanger to frost the outer machine heat exchanger;
and exiting the frosting stage after the preset conditions are met, and entering the defrosting stage of the outer machine heat exchanger to defrost the outer machine heat exchanger.
7. The apparatus of claim 6,
the control unit controls the air conditioner to operate in a heating mode so as to enter a frosting stage of the outer machine heat exchanger, and the control unit comprises:
controlling the inner fan to operate according to a preset wind gear, controlling the outer fan not to operate, reversing the four-way valve, and operating a heating mode;
controlling the compressor to operate according to a first set target frequency, and adjusting the electronic expansion valve to a preset opening degree;
after the compressor runs for a second preset time, the running frequency of the compressor is adjusted according to the temperature of the outer machine heat exchanger;
and/or the presence of a gas in the gas,
the control unit enters into the defrosting stage of the outer machine heat exchanger to defrost the outer machine heat exchanger, and the defrosting stage comprises the following steps:
after entering the defrosting stage of the outer machine heat exchanger, the compressor, the inner fan, the outer fan and the four-way valve stop running;
when the outdoor environment temperature is greater than or equal to a fifth preset temperature value and the compressor stops for a fourth preset time, controlling an outer fan of the air conditioner to reversely rotate so as to reversely blow air from an air outlet of the outer unit and blow away dirt on a heat exchanger of the outer unit;
and when the outdoor environment temperature is lower than a fifth preset temperature value, controlling the air conditioner to operate in a refrigeration mode so as to enter a defrosting stage of the outer machine heat exchanger to defrost the outer machine heat exchanger.
8. The apparatus of claim 7, wherein the control unit adjusts the operating frequency of the compressor according to the temperature of the outer machine heat exchanger, and comprises:
when the temperature of the outer machine heat exchanger is greater than or equal to a first preset temperature value, controlling the compressor to keep the first set target frequency to operate;
when the temperature of the outer machine heat exchanger is greater than a second preset temperature value and less than a first preset temperature value, controlling the compressor to operate according to a second set target frequency;
when the temperature of the outer machine heat exchanger is less than or equal to a second preset temperature value, controlling the compressor to operate according to a third set target frequency;
wherein the first set target frequency is greater than the second set target frequency is greater than the third set target frequency;
and/or the presence of a gas in the gas,
the control unit controls the air conditioner to run in a refrigeration mode so as to enter a defrosting stage of an external unit heat exchanger, and the defrosting stage comprises the following steps:
controlling the inner fan to stop running, and controlling the compressor to run according to a fourth set target frequency; after the air conditioner runs for a sixth preset time, controlling an outer fan of the air conditioner to rotate reversely so as to blow air reversely from an air outlet of the outer machine and blow away dirt on a heat exchanger of the outer machine;
and/or the presence of a gas in the gas,
and when the temperature of the outer machine heat exchanger is greater than a sixth preset temperature value or the running time of the defrosting stage reaches a seventh preset time, the defrosting stage is exited.
9. A storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 4.
10. An air conditioner comprising a processor, a memory, and a computer program stored in the memory and operable on the processor, wherein the processor executes the program to perform the steps of the method of any one of claims 1 to 4, or comprises the self-cleaning control device for an external unit of an air conditioner as claimed in any one of claims 5 to 8.
CN202010994607.1A 2020-09-21 2020-09-21 Self-cleaning control method and device for air conditioner external unit, storage medium and air conditioner Pending CN112283863A (en)

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CN113266919A (en) * 2021-05-26 2021-08-17 珠海格力电器股份有限公司 Fan blade self-cleaning control method for air conditioner external unit and air conditioner
CN113405221A (en) * 2021-06-24 2021-09-17 海信（山东）空调有限公司 Air conditioner self-cleaning control method and device, storage medium and air conditioner
CN113531778A (en) * 2021-07-09 2021-10-22 青岛海尔空调器有限总公司 Method for controlling external self-cleaning of outdoor heat exchanger
CN114110954A (en) * 2021-11-29 2022-03-01 海信（山东）空调有限公司 Self-cleaning control method for outdoor heat exchanger, air conditioner and computer storage medium
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CN114216231A (en) * 2021-12-06 2022-03-22 珠海格力节能环保制冷技术研究中心有限公司 Control method of air conditioner and air conditioner
CN114719392A (en) * 2022-03-16 2022-07-08 广东瑞德智能科技股份有限公司 Automatic cleaning method and device for air conditioner, air conditioner and storage medium
CN114893895A (en) * 2022-06-13 2022-08-12 珠海格力电器股份有限公司 Method and medium for intelligently detecting and reminding self-cleaning of outdoor unit and air conditioner
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CN110873407A (en) * 2018-08-31 2020-03-10 青岛海尔空调器有限总公司 Air conditioner and self-cleaning control method thereof
CN113266919A (en) * 2021-05-26 2021-08-17 珠海格力电器股份有限公司 Fan blade self-cleaning control method for air conditioner external unit and air conditioner
CN113405221A (en) * 2021-06-24 2021-09-17 海信（山东）空调有限公司 Air conditioner self-cleaning control method and device, storage medium and air conditioner
CN113531778A (en) * 2021-07-09 2021-10-22 青岛海尔空调器有限总公司 Method for controlling external self-cleaning of outdoor heat exchanger
CN114110954A (en) * 2021-11-29 2022-03-01 海信（山东）空调有限公司 Self-cleaning control method for outdoor heat exchanger, air conditioner and computer storage medium
CN114110951A (en) * 2021-11-29 2022-03-01 海信（山东）空调有限公司 Self-cleaning control method for outdoor heat exchanger, air conditioner and computer storage medium
CN114216258A (en) * 2021-12-02 2022-03-22 青岛海尔空调器有限总公司 Method and device for self-cleaning of air conditioner and air conditioner
CN114216231A (en) * 2021-12-06 2022-03-22 珠海格力节能环保制冷技术研究中心有限公司 Control method of air conditioner and air conditioner
CN114719392A (en) * 2022-03-16 2022-07-08 广东瑞德智能科技股份有限公司 Automatic cleaning method and device for air conditioner, air conditioner and storage medium
CN114719392B (en) * 2022-03-16 2024-04-05 广东瑞德智能科技股份有限公司 Automatic cleaning method and device for air conditioner, air conditioner and storage medium
CN114893895A (en) * 2022-06-13 2022-08-12 珠海格力电器股份有限公司 Method and medium for intelligently detecting and reminding self-cleaning of outdoor unit and air conditioner
CN115183393A (en) * 2022-07-07 2022-10-14 Tcl空调器(中山)有限公司 Air conditioner self-cleaning control method and air conditioner

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