CN111854053A - Self-cleaning method and device of air conditioner, air conditioner and electronic equipment - Google Patents

Self-cleaning method and device of air conditioner, air conditioner and electronic equipment Download PDF

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Publication number
CN111854053A
CN111854053A CN202010725665.4A CN202010725665A CN111854053A CN 111854053 A CN111854053 A CN 111854053A CN 202010725665 A CN202010725665 A CN 202010725665A CN 111854053 A CN111854053 A CN 111854053A
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China
Prior art keywords
air conditioner
indoor
compressor
temperature
self
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CN202010725665.4A
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Chinese (zh)
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CN111854053B (en
Inventor
龚勤勤
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Midea Group Co Ltd
GD Midea Heating and Ventilating Equipment Co Ltd
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Midea Group Co Ltd
GD Midea Heating and Ventilating Equipment Co Ltd
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Priority to CN202010725665.4A priority Critical patent/CN111854053B/en
Publication of CN111854053A publication Critical patent/CN111854053A/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
    • 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
    • F24F11/62—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
    • F24F11/67—Switching between heating and cooling modes
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • 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
    • F24F2110/20—Humidity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a self-cleaning method and device of an air conditioner, the air conditioner and electronic equipment. The self-cleaning method comprises the following steps: responding a self-cleaning instruction aiming at the air conditioner, and entering a refrigeration and frost-condensation stage; recognizing that the air conditioner meets the end condition of a refrigeration and frost condensation stage, controlling a compressor in the air conditioner to stop for a preset time, and maintaining the indoor fan to rotate in the stop process of the compressor; and controlling the air conditioner to enter a heating defrosting stage. According to the method, the compressor can be controlled to stop before the air conditioner is controlled to enter the heating defrosting stage, the problem that the air conditioner is damaged due to overlarge high-low pressure difference caused by the mode switching of the air conditioner in a refrigerating-heating mode can be solved, and the indoor fan is kept to rotate in the stopping process of the compressor, so that the indoor heat exchanger is defrosted in advance by using indoor air with higher temperature, a heat source can be effectively utilized, the running time of the defrosting stage is favorably shortened, and the waiting time of a user is shortened.

Description

Self-cleaning method and device of air conditioner, air conditioner and electronic equipment
Technical Field
The present invention relates to the field of air conditioning technologies, and in particular, to a self-cleaning method and apparatus for an air conditioner, an electronic device, and a computer-readable storage medium.
Background
The air conditioner has a large amount of grime to adhere to on the heat exchanger after long-term use, leads to heat exchanger surface deposition, and then reduces the heat transfer performance of heat exchanger for the energy consumption grow of air conditioner, simultaneously, the grime of heat exchanger still can breed a large amount of bacteriums, brings adverse effect for user's health, consequently, needs regularly to clean the heat exchanger of air conditioner.
Most of the existing self-cleaning methods of the air conditioner adopt a mode that a heat exchanger is frosted firstly and then is defrosted to clean dust and dirt, and when the air conditioner is switched in a 'refrigerating-heating' operation mode, the air conditioner can face the problems that the air conditioner is damaged due to overlarge high-low pressure difference and the like.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the art described above. Therefore, an object of the present invention is to provide a self-cleaning method for an air conditioner, which can control a compressor to stop before the air conditioner is controlled to enter a heating defrosting stage, so as to avoid the problem that the air conditioner is damaged due to an excessive high-low pressure difference caused by the switching of a "cooling-heating" mode of the air conditioner, and maintain the rotation of an indoor fan during the stop of the compressor, so that the indoor heat exchanger is defrosted in advance by using the indoor air with a higher temperature, thereby effectively utilizing a heat source, being beneficial to shortening the operation time of the defrosting stage, and further shortening the waiting time of a user.
A second object of the present invention is to provide a self-cleaning apparatus of an air conditioner.
A third object of the present invention is to provide an air conditioner.
A fourth object of the invention is to propose an electronic device.
A fifth object of the present invention is to propose a computer-readable storage medium.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a self-cleaning method for an air conditioner, including: responding a self-cleaning instruction aiming at the air conditioner, and entering a refrigeration and frost-condensation stage; recognizing that the air conditioner meets the end condition of a refrigeration and frost condensation stage, controlling a compressor in the air conditioner to stop for a preset time, and maintaining the indoor fan to rotate in the stop process of the compressor; and controlling the air conditioner to enter a heating defrosting stage.
According to the self-cleaning method of the air conditioner, the compressor can be controlled to stop before the air conditioner is controlled to enter the heating defrosting stage, the problem that the air conditioner is damaged due to overlarge high-low pressure difference caused by the switching of the 'refrigerating-heating' mode of the air conditioner can be solved, and the rotation of the indoor fan is maintained in the stopping process of the compressor, so that the indoor heat exchanger is defrosted in advance by using the indoor air with higher temperature, a heat source can be effectively utilized, the operation time of the defrosting stage is favorably shortened, and the waiting time of a user is shortened.
In addition, the self-cleaning method of the air conditioner proposed by the above embodiment of the present invention may further have the following additional technical features:
in one embodiment of the invention, when the air conditioner is in a refrigeration frost stage, the method further comprises: and detecting the temperature of the indoor coil, and adjusting the operating frequency of the compressor, the rotating speed of the indoor fan and/or the opening degree of the electronic expansion valve according to the detected temperature of the indoor coil so as to reduce the temperature of the indoor coil to a first target temperature.
In one embodiment of the present invention, the maintaining of the indoor fan to be rotated during the compressor off includes: and maintaining the rotating speed of the indoor fan to be greater than or equal to the preset rotating speed.
In one embodiment of the present invention, the maintaining of the indoor fan to be rotated during the compressor off includes: detecting human bodies indoors, determining the target rotating speed of the indoor fan according to the number of the detected human bodies, and controlling the indoor fan to rotate according to the target rotating speed; wherein the target rotation speed is inversely proportional to the number of human bodies.
In one embodiment of the invention, the method further comprises: and controlling the air supply direction of an air guide in the air conditioner to be upward air supply.
In one embodiment of the invention, the method further comprises: detecting a human body indoors; if a person is in the room, the air supply direction of the air guide piece in the air conditioner is controlled to be upward air supply.
In an embodiment of the present invention, the controlling the air conditioner to enter a heating and defrosting stage includes: and detecting the temperature of the indoor coil, and adjusting the operating frequency of the compressor, the rotating speed of the indoor fan and/or the opening degree of the electronic expansion valve according to the detected temperature of the indoor coil so as to increase the temperature of the indoor coil to a second target temperature.
In order to achieve the above object, a second embodiment of the present invention provides a self-cleaning device for an air conditioner, comprising: the instruction response module is used for responding a self-cleaning instruction aiming at the air conditioner and entering a refrigeration and frost-condensation stage; and the self-cleaning control module is used for identifying that the air conditioner meets the end condition of the refrigeration and frost condensation stage, controlling the compressor in the air conditioner to stop for a preset time, maintaining the indoor fan to rotate in the stop process of the compressor, and controlling the air conditioner to enter the heating and defrosting stage.
According to the self-cleaning device of the air conditioner, the compressor can be controlled to stop before the air conditioner is controlled to enter the heating defrosting stage, the problem that the air conditioner is damaged due to overlarge high-low pressure difference caused by the switching of the 'refrigerating-heating' mode of the air conditioner can be solved, and the rotation of the indoor fan is maintained in the stopping process of the compressor, so that the indoor heat exchanger is defrosted in advance by using the indoor air with higher temperature, a heat source can be effectively utilized, the operation time of the defrosting stage is favorably shortened, and the waiting time of a user is further shortened.
In addition, the self-cleaning device of the air conditioner according to the above embodiment of the present invention may further have the following additional technical features:
in an embodiment of the present invention, the self-cleaning control module is further configured to: when the air conditioner is in a refrigeration and frost-condensation stage, the temperature of an indoor coil is detected, and the running frequency of the compressor, the rotating speed of the indoor fan and/or the opening degree of the electronic expansion valve are adjusted according to the detected temperature of the indoor coil so as to reduce the temperature of the indoor coil to a first target temperature.
In an embodiment of the present invention, the self-cleaning control module is specifically configured to: and maintaining the rotating speed of the indoor fan to be greater than or equal to the preset rotating speed. In an embodiment of the present invention, the self-cleaning control module is specifically configured to: detecting human bodies indoors, determining the target rotating speed of the indoor fan according to the number of the detected human bodies, and controlling the indoor fan to rotate according to the target rotating speed; wherein the target rotation speed is inversely proportional to the number of human bodies.
In an embodiment of the present invention, the self-cleaning control module is further configured to: and controlling the air supply direction of an air guide in the air conditioner to be upward air supply.
In an embodiment of the present invention, the self-cleaning control module is further configured to: detecting a human body indoors; if a person is in the room, the air supply direction of the air guide piece in the air conditioner is controlled to be upward air supply.
In an embodiment of the present invention, the self-cleaning control module is specifically configured to: and detecting the temperature of the indoor coil, and adjusting the operating frequency of the compressor, the rotating speed of the indoor fan and/or the opening degree of the electronic expansion valve according to the detected temperature of the indoor coil so as to increase the temperature of the indoor coil to a second target temperature.
In order to achieve the above object, a third aspect of the present invention provides an air conditioner including the self-cleaning device of the air conditioner according to the second aspect of the present invention.
According to the air conditioner provided by the embodiment of the invention, the compressor can be controlled to stop before the air conditioner is controlled to enter the heating defrosting stage, so that the problem that the air conditioner is damaged due to overlarge high-low pressure difference caused by the switching of the 'refrigerating-heating' mode of the air conditioner can be solved, and the rotation of the indoor fan is maintained in the stopping process of the compressor, so that the indoor heat exchanger is defrosted in advance by utilizing the indoor air with higher temperature, a heat source can be effectively utilized, the running time of the defrosting stage is favorably shortened, and the waiting time of a user is further shortened.
In order to achieve the above object, a fourth aspect of the present invention provides an electronic device, including a memory, a processor; wherein, the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the self-cleaning method of the air conditioner according to the embodiment of the first aspect of the present invention.
According to the electronic equipment provided by the embodiment of the invention, the processor executes the computer program stored in the memory, the compressor can be controlled to stop before the air conditioner is controlled to enter the heating defrosting stage, the problem that the air conditioner is damaged due to overlarge high-low pressure difference caused by the switching of the 'refrigerating-heating' mode of the air conditioner can be solved, and the indoor fan is kept to rotate in the stopping process of the compressor, so that the indoor heat exchanger is defrosted in advance by utilizing the indoor air with higher temperature, a heat source can be effectively utilized, the running time of the defrosting stage is favorably shortened, and the waiting time of a user is further shortened.
To achieve the above object, a fifth embodiment of the present invention provides a computer-readable storage medium storing a computer program, which when executed by a processor, implements the self-cleaning method of the air conditioner according to the first embodiment of the present invention.
The computer readable storage medium of the embodiment of the invention stores the computer program and is executed by the processor, and can control the compressor to stop before controlling the air conditioner to enter the heating defrosting stage, so that the problem that the air conditioner is damaged due to overlarge high-low pressure difference caused by the switching of the cooling-heating modes of the air conditioner can be solved, and the rotation of the indoor fan is maintained in the stopping process of the compressor, so that the indoor heat exchanger is defrosted in advance by utilizing the indoor air with higher temperature, a heat source can be effectively utilized, the running time of the defrosting stage is favorably shortened, and the waiting time of a user is further shortened.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic flow chart illustrating a self-cleaning method of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a cooling frost formation stage in a self-cleaning method of an air conditioner according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating a thermal defrosting stage of a self-cleaning method of an air conditioner according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a self-cleaning method of an air conditioner according to an embodiment of the present invention;
FIG. 5 is a block diagram illustrating a self-cleaning apparatus of an air conditioner according to an embodiment of the present invention;
FIG. 6 is a block schematic diagram of an air conditioner according to one embodiment of the present invention; and
FIG. 7 is a block diagram of an electronic device according to one embodiment of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A self-cleaning method and apparatus of an air conditioner, an electronic device, and a computer-readable storage medium according to embodiments of the present invention are described below with reference to the accompanying drawings.
Fig. 1 is a flowchart illustrating a self-cleaning method of an air conditioner according to an embodiment of the present invention.
As shown in fig. 1, the self-cleaning method of an air conditioner according to an embodiment of the present invention includes the following steps:
and S101, responding to a self-cleaning instruction for the air conditioner, and entering a refrigeration and frost-condensation stage.
It should be noted that the air conditioner in the embodiment of the present invention has a self-cleaning function, and can respond to a self-cleaning instruction for itself to control itself to enter the refrigeration and frost-condensation stage first. Wherein, the refrigeration frost phase can comprise refrigeration condensation and frosting. Optionally, the user may send the self-cleaning instruction to the air conditioner through a remote controller, an air conditioner APP (Application program) in the mobile terminal, or an operation panel on the body of the air conditioner in a non-contact manner such as a language, a gesture, or the like.
In specific implementation, the self-cleaning process of the air conditioner can be calibrated in advance according to actual conditions and is arranged in the storage space of the air conditioner. For example, the self-cleaning process can be performed in sequence of 'refrigerating condensation, frosting, defrosting and ventilation', the air conditioner firstly enters a refrigerating condensation stage, air is liquefied when meeting cold and generates condensed water on the outer surface of the indoor heat exchanger, then the air conditioner enters a frosting stage, residual water inside the indoor heat exchanger meets cold and frosts to wrap internal dirt of the indoor heat exchanger in the frosting, then the air conditioner enters a defrosting stage, the frost on the outer surface of the indoor heat exchanger is liquefied, the generated condensed water can flush the originally wrapped dirt, then the air conditioner enters a ventilation stage to remove the residual condensed water inside the indoor heat exchanger, and waste heat in the indoor heat exchanger can be blown out. It should be noted that the self-cleaning process may also be implemented in other manners, which are not limited herein.
And S102, identifying that the air conditioner meets the end condition of the refrigeration and frost condensation stage, controlling the compressor in the air conditioner to stop for a preset time, and maintaining the indoor fan to rotate in the stop process of the compressor.
In the embodiment of the invention, the ending condition of the refrigeration and frost condensation stage can be calibrated according to the actual situation.
For example, when the air conditioner is in the refrigeration and frost condensation stage, if the temperature of the indoor coil is within the preset temperature range and is continuously preset for a first time, which indicates that the temperature of the indoor coil is continuously lower within a longer time, the degree of the air or the water in the indoor heat exchanger meeting the condensation frost is higher, and the indoor heat exchanger can be thoroughly cleaned, so that whether the temperature of the indoor coil is within the preset temperature range and is continuously preset for the first time is taken as an end condition of the refrigeration and frost condensation stage. The preset temperature range and the preset first time duration can be calibrated according to actual conditions, for example, the preset temperature range can be calibrated to be (-5 ℃ -0 ℃), and the preset first time duration can be calibrated to be 10 minutes.
For example, when the air conditioner is in the refrigeration and frost condensation stage, if the total duration of the refrigeration and frost condensation stage reaches the preset second duration, it indicates that the operation duration of the refrigeration and frost condensation stage of the air conditioner is long, and air or moisture in the indoor heat exchanger has enough time to meet condensation frost, the indoor heat exchanger can be thoroughly cleaned, so that whether the total duration of the refrigeration and frost condensation stage reaches the preset second duration or not can be used as an end condition of the refrigeration and frost condensation stage. The preset second time period may be calibrated according to actual conditions, for example, may be calibrated to be 20 minutes.
It can be understood that, in the related art, after the air conditioner meets the end condition of the refrigeration and frost condensation stage, most of the air conditioners are directly controlled to enter the heating and frost condensation stage, and the problem that the air conditioner is damaged due to overlarge high-low pressure difference caused by the switching of the refrigeration and heating modes of the air conditioner exists. The preset duration can be calibrated according to actual conditions.
Further, the indoor fan is maintained to rotate in the shutdown process of the compressor, so that the indoor air with higher temperature is utilized to defrost the indoor heat exchanger in advance, a heat source can be effectively utilized, the running time of a defrosting stage is shortened, and the waiting time of a user is shortened.
S103, controlling the air conditioner to enter a heating defrosting stage.
It can be understood that the frost can be removed by the operation in the heating mode, that is, the frost on the outer surface of the indoor heat exchanger is liquefied, and the generated condensed water can wash away originally wrapped dust and dirt, so as to achieve the effect of further cleaning the indoor heat exchanger.
As another possible embodiment, the frost may also be defrosted by the blowing mode.
It can be understood that if the air conditioner operates in the heating mode, defrosting efficiency is high, user waiting time is short, but energy consumption is high. If the air conditioner runs in an air supply mode, the defrosting efficiency is low, the waiting time of a user is long, and the energy consumption is saved.
In summary, according to the self-cleaning method of the air conditioner of the embodiment of the invention, before the air conditioner is controlled to enter the heating defrosting stage, the compressor can be controlled to stop, so that the problem that the air conditioner is damaged due to overlarge high-low pressure difference caused by the switching of the 'cooling-heating' mode of the air conditioner can be avoided, and the indoor fan is kept rotating during the stop process of the compressor, so that the indoor heat exchanger is defrosted in advance by using the indoor air with higher temperature, a heat source can be effectively utilized, the operation time of the defrosting stage can be shortened, and the waiting time of a user can be shortened.
On the basis of any of the above embodiments, the step S102 of maintaining the indoor fan to rotate during the compressor shutdown may include the following two possible ways:
mode 1, maintain the rotational speed of indoor fan and be greater than or equal to preset rotational speed.
The preset rotating speed can be calibrated according to actual conditions, and optionally can be calibrated to be a higher rotating speed.
Therefore, in the process of stopping the compressor, the method enables the indoor fan to run at a large rotating speed by maintaining the rotating speed of the indoor fan to be larger than or equal to the preset rotating speed, facilitates defrosting of the indoor heat exchanger in advance by utilizing indoor air with high temperature, can effectively utilize a heat source, accelerates defrosting speed, and further shortens waiting time of users.
And 2, detecting human bodies indoors, determining the target rotating speed of the indoor fan according to the detected number of the human bodies, and controlling the indoor fan to rotate according to the target rotating speed. Wherein the target rotation speed is inversely proportional to the number of human bodies.
Optionally, a human body sensing device can be installed indoors for human body detection indoors. The sensing device may include an infrared sensor, an ultrasonic sensor, and the like.
In the embodiment of the invention, if the number of the indoor human bodies is large, the corresponding target rotating speed is low in order to avoid discomfort of a user caused by direct blowing of cold air; if the number of the human bodies in the room is small, the corresponding target rotating speed is high in order to accelerate the defrosting of the indoor heat exchanger, namely the target rotating speed is in inverse proportion to the number of the human bodies. For example, when the number of recognized human bodies is 0, the target rotation speed of the indoor fan may be a first rotation speed; when the number of the recognized human bodies is larger than or equal to 1, the target rotating speed of the indoor fan can be a second rotating speed, wherein the first rotating speed is larger than the second rotating speed, and the first rotating speed and the second rotating speed can be calibrated according to actual conditions.
Optionally, a mapping relation or a mapping table between the number of human bodies and the target rotating speed may be established in advance, and after the number of human bodies is obtained, the mapping relation or the mapping table is queried, so that the target rotating speed required by the indoor fan at the moment can be determined, and the target rotating speed is used for controlling the indoor fan to rotate according to the target rotating speed. It should be noted that the mapping relationship and the mapping table may be calibrated according to actual situations and preset in the storage space of the air conditioner.
Therefore, in the compressor stopping process, the target rotating speed of the indoor fan can be determined according to the indoor human body number, different human body numbers can correspond to different target rotating speeds, the target rotating speed is closer to the user requirement, and the comfort level of the user is improved.
On the basis of any of the above embodiments, in step S102, the indoor fan is maintained to rotate during the shutdown of the compressor, and the air supply direction of the air guide in the air conditioner can be controlled to be upward air supply, so as to avoid discomfort to the user caused by direct blowing of cold air, and improve the comfort level of the user.
Further, in step S102, the indoor fan is kept rotating during the compressor shutdown, human body detection can be performed indoors, and if a person is present indoors, the air supply direction of the air guide in the air conditioner is controlled to be upward air supply. Therefore, the method can not adjust the air supply direction of the air guide member when no person is indoors, can only control the air supply direction of the air guide member to be upward air supply when a person is indoors, and has higher flexibility.
On the basis of any of the above embodiments, when the air conditioner is in the refrigeration and frost condensation stage, as shown in fig. 2, the method further includes:
s201, detecting the temperature of the indoor coil.
Alternatively, a temperature sensor may be installed at a wall of an indoor coil of the air conditioner to detect the temperature of the indoor coil.
S202, adjusting the running frequency of the compressor, the rotating speed of the indoor fan and/or the opening degree of the electronic expansion valve according to the detected indoor coil temperature so as to reduce the indoor coil temperature to a first target temperature.
In the embodiment of the invention, when the air conditioner is in a refrigeration and frost condensation stage, if the temperature of the indoor coil pipe is not reduced to the first target temperature, the temperature of the indoor coil pipe is higher, the degree of air or water in the indoor heat exchanger meeting condensation frost is lower, and the indoor heat exchanger cannot be thoroughly cleaned; if the temperature of the indoor coil pipe is reduced to the first target temperature, the temperature of the indoor coil pipe is lower at the moment, the degree that air or water in the indoor heat exchanger meets condensation frost is higher, and the indoor heat exchanger can be thoroughly cleaned. The first target temperature may be calibrated according to actual conditions, and may be, for example, calibrated to be 0 ℃.
It can be understood that when the air conditioner is in the refrigeration and frost condensation stage, the temperature of the indoor coil is in negative correlation with the operating frequency of the compressor, the temperature of the indoor coil is in positive correlation with the rotating speed of the indoor fan, and the temperature of the indoor coil is in positive correlation with the opening degree of the electronic expansion valve. When the temperature of the indoor coil is higher, the running frequency of the compressor can be increased, and/or the rotating speed of the indoor fan can be reduced, and/or the opening degree of the electronic expansion valve can be reduced, so that the temperature of the indoor coil can be reduced; when the temperature of the indoor coil is lower, the running frequency of the compressor can be reduced, and/or the rotating speed of the indoor fan can be increased, and/or the opening degree of the electronic expansion valve can be increased, so that the temperature of the indoor coil can be increased.
Optionally, a mapping relation or a mapping table between the indoor coil temperature and the operating frequency of the compressor, the rotating speed of the indoor fan, and the opening degree of the electronic expansion valve may be pre-established, and after the indoor coil temperature is obtained, the mapping relation or the mapping table is queried, so that the operating frequency required by the compressor, the rotating speed required by the indoor fan, and the opening degree required by the electronic expansion valve can be determined, and the mapping relation or the mapping table is used for adjusting the actual operating frequency of the compressor, the actual rotating speed of the indoor fan, and the actual opening degree of the electronic expansion. It should be noted that the mapping relationship and the mapping table may be calibrated according to actual situations and preset in the storage space of the air conditioner.
As another possible implementation manner, a plurality of temperature intervals may be calibrated in advance, and the operating frequency of the compressor, the rotational speed of the indoor fan, and the opening degree of the electronic expansion valve corresponding to each temperature interval may be calibrated, after the indoor coil temperature is obtained, the temperature interval where the indoor coil temperature is located may be continuously identified, and then the operating frequency of the compressor, the rotational speed of the indoor fan, and the opening degree of the electronic expansion valve corresponding to the temperature interval may be obtained for adjusting the actual operating frequency of the compressor, the actual rotational speed of the indoor fan, and the actual opening degree of the electronic expansion valve. It should be noted that the temperature range and the operating frequency of the compressor corresponding thereto, the rotating speed of the indoor fan, and the opening degree of the electronic expansion valve may be calibrated according to actual conditions, and are preset in the storage space of the air conditioner.
Therefore, when the air conditioner is in a refrigeration and frost condensation stage, the method can adjust the operating frequency of the compressor, the rotating speed of the indoor fan and/or the opening degree of the electronic expansion valve according to the detected temperature of the indoor coil, so that the temperature of the indoor coil is reduced to the first target temperature, and the self-cleaning effect is ensured.
On the basis of the foregoing embodiment, after the temperature of the indoor coil is reduced to the first target temperature in step S202, the temperature of the indoor coil may be continuously detected, a difference between the temperature of the indoor coil and the first target temperature is obtained, and the operating frequency of the compressor, the rotational speed of the indoor fan, and/or the opening degree of the electronic expansion valve is continuously adjusted according to the difference, so that the difference is maintained within the first preset range for the first duration.
Wherein the difference between the indoor coil temperature and the first target temperature may comprise the absolute value of the indoor coil temperature minus the first target temperature. The first preset range and the first time length can be calibrated according to actual conditions, for example, the first preset range can be calibrated to be (1-10) DEG C, and the first time length can be calibrated to be 15 minutes.
In a specific implementation, the operation frequency of the compressor, the opening degree of the indoor fan and/or the opening degree of the electronic expansion valve are/is adjusted to maintain the difference value within a first preset range, and if the difference value between the indoor coil temperature and the first target temperature exceeds the preset range and the indoor coil temperature is greater than the first target temperature, the operation frequency of the compressor can be increased, the rotating speed of the indoor fan can be reduced and/or the opening degree of the electronic expansion valve can be reduced; if the difference value between the indoor coil temperature and the first target temperature exceeds the preset range and the indoor coil temperature is lower than the first target temperature, the running frequency of the compressor can be reduced, the rotating speed of the indoor fan can be increased, and/or the opening degree of the electronic expansion valve can be increased.
Therefore, after the temperature of the indoor coil is reduced to the first target temperature, the temperature of the indoor coil can be maintained within a certain temperature range for the first time, the indoor heat exchanger can be guaranteed to frost for enough time, the frosting amount of the indoor heat exchanger in the frosting stage is increased, and the cleaning effect of the indoor heat exchanger is enhanced.
On the basis of the above embodiment, the obtaining of the first target temperature in step S202 may include obtaining an indoor ambient temperature and an indoor relative humidity, and determining the first target temperature according to the indoor ambient temperature and the indoor relative humidity.
Optionally, a temperature sensor and a humidity sensor may be respectively installed on an indoor unit of the air conditioner to obtain an indoor ambient temperature and an indoor relative humidity.
Optionally, a mapping relation or a mapping table between the indoor ambient temperature, the indoor relative humidity, and the first target temperature may be pre-established, and after the indoor ambient temperature and the indoor relative humidity are obtained, the mapping relation or the mapping table is queried, so that the first target temperature required by the evaporator at that time can be determined. It should be noted that the mapping relationship and the mapping table may be calibrated according to actual situations and preset in the storage space of the air conditioner.
For example, based on the indoor ambient temperature and the indoor relative humidity, the correlation formula for determining the first target temperature is as follows:
T2＝T0+k1*(T1-A)+k2*(φ％-B％)
wherein, T2Is a first target temperature, T1Is the indoor ambient temperature, [ phi ] is the indoor relative humidity, T0Is a reference value of the first target temperature, A is a reference value of the indoor ambient temperature, B% is a reference value of the indoor relative humidity, k1、k2Are all correction coefficients.
Optionally, parameter T0、A、B、k1、k2Can be calibrated according to the actual conditions, e.g. T0May be designated as-15 deg.C, A may be designated as 20 deg.C, B may be designated as 60, k1Can be scaled to 0.2, k2And may be scaled to 5.
Therefore, the method can comprehensively consider the influence of the indoor environment temperature and the indoor relative humidity on the first target temperature, and different indoor environment temperatures and indoor relative humidities can correspond to different first target temperatures, so that the obtained first target temperature is closer to the actual frosting requirement and is more flexible and accurate.
On the basis of the above embodiment, the accumulated operating time of the air conditioner may be obtained, and the first time may be determined according to the accumulated operating time. The accumulated running time of the air conditioner can be obtained by installing a timer in the air conditioner. It can be understood that the accumulated operation time length can reflect the ash deposition degree of the indoor heat exchanger, and the longer the accumulated operation time length is, the higher the ash deposition degree of the indoor heat exchanger is, the more the required frost formation amount is, that is, the actually required frost formation amount is positively correlated with the accumulated operation time length.
Optionally, a mapping relation or a mapping table between the accumulated operating duration and the first duration may be pre-established, and after the accumulated operating duration is obtained, the mapping relation or the mapping table is queried, so that the corresponding first duration can be determined. It should be noted that the mapping relationship and the mapping table may be calibrated according to actual situations and preset in the storage space of the air conditioner.
For example, according to the accumulated operation duration, the correlation formula for determining the first duration is as follows:
S2＝S0+k3*(S1-C)/(24*60)
wherein S is2Is a first duration, S1For accumulating the running time, S0Is a reference value of the first time length, C is a reference value of the accumulated operation time length, k3Is a correction factor.
Optionally, parameter S0、C、k3Can be calibrated according to the actual conditions, e.g. S0Calibratable for 5 minutes, c calibratable for 60 days, k3It can be calibrated to 0.05.
Therefore, the method can consider the influence of the accumulated operation time length on the first time length, and different accumulated operation time lengths can correspond to different first time lengths, so that the obtained first time length is closer to the actual frosting requirement and is more flexible and accurate.
On the basis of any of the above embodiments, the step S103 of controlling the air conditioner to enter the heating and defrosting stage further includes, as shown in fig. 3:
s301, detecting the temperature of the indoor coil.
S302, adjusting the running frequency of the compressor, the rotating speed of the indoor fan and/or the opening degree of the electronic expansion valve according to the detected indoor coil temperature so as to raise the indoor coil temperature to a second target temperature.
In the embodiment of the invention, when the air conditioner is in a heating and defrosting stage, if the temperature of the indoor coil pipe is not raised to the second target temperature, the temperature of the indoor coil pipe is lower, the degree of frost liquefaction on the outer surface of the indoor heat exchanger is lower, and the indoor heat exchanger cannot be thoroughly cleaned; if the temperature of the indoor coil pipe rises to the second target temperature, the temperature of the indoor coil pipe is higher, the degree of frost liquefaction on the outer surface of the indoor heat exchanger is higher, and the indoor heat exchanger can be thoroughly cleaned. The second target temperature may be calibrated according to actual conditions, for example, may be calibrated to be 5 ℃.
It can be understood that when the air conditioner is in the heating and defrosting stage, the temperature of the indoor coil is positively correlated with the operating frequency of the compressor, the temperature of the indoor coil is negatively correlated with the rotating speed of the indoor fan, and the temperature of the indoor coil is negatively correlated with the opening degree of the electronic expansion valve. When the temperature of the indoor coil is higher, the running frequency of the compressor can be reduced, and/or the rotating speed of the indoor fan is increased, and/or the opening degree of the electronic expansion valve is increased, so that the temperature of the indoor coil is reduced; when the temperature of the indoor coil is lower, the running frequency of the compressor can be increased, and/or the rotating speed of the indoor fan can be reduced, and/or the opening degree of the electronic expansion valve can be reduced, so that the temperature of the indoor coil can be increased.
Therefore, when the air conditioner is in a heating and defrosting stage, the method can adjust the operating frequency of the compressor, the rotating speed of the indoor fan and/or the opening degree of the electronic expansion valve according to the detected temperature of the indoor coil, so that the temperature of the indoor coil is increased to a second target temperature, and the self-cleaning effect is ensured.
To make the present invention more apparent to those skilled in the art, fig. 4 is a flowchart of a self-cleaning method of an air conditioner according to one embodiment of the present invention, as shown in fig. 4, the method may include the steps of:
s401, responding to a self-cleaning instruction for the air conditioner, and entering a refrigeration and frost-condensation stage.
S402, recognizing that the air conditioner meets the end condition of the refrigeration and frost condensation stage, controlling the compressor in the air conditioner to stop for a preset time, and maintaining the indoor fan to rotate in the stop process of the compressor.
And S403, controlling the air conditioner to enter a heating defrosting stage.
And S404, controlling the air conditioner to enter a ventilation stage.
For the specific description of the steps, reference is made to the descriptions of the related contents in the above embodiments, which are not described herein again.
Fig. 5 is a block diagram illustrating a self-cleaning apparatus of an air conditioner according to an embodiment of the present invention.
As shown in fig. 5, a self-cleaning apparatus 100 of an air conditioner according to an embodiment of the present invention includes: an instruction response module 11 and a self-cleaning control module 12.
The instruction response module 11 is used for responding to a self-cleaning instruction for the air conditioner and entering a refrigeration and frost-condensation stage.
The self-cleaning control module 12 is configured to recognize that the air conditioner meets an end condition of a refrigeration and frost condensation stage, control a preset shutdown duration of a compressor in the air conditioner, maintain rotation of an indoor fan in a shutdown process of the compressor, and control the air conditioner to enter a heating and defrosting stage.
In an embodiment of the present invention, the self-cleaning control module 12 is further configured to detect an indoor coil temperature when the air conditioner is in a refrigeration and frost-condensation stage, and adjust an operating frequency of the compressor, a rotation speed of the indoor fan, and/or an opening degree of the electronic expansion valve according to the detected indoor coil temperature to reduce the indoor coil temperature to a first target temperature.
In an embodiment of the present invention, the self-cleaning control module 12 is specifically configured to maintain the rotation speed of the indoor fan to be greater than or equal to a preset rotation speed.
In an embodiment of the present invention, the self-cleaning control module 12 is specifically configured to perform human body detection indoors, determine a target rotation speed of the indoor fan according to the number of detected human bodies, and control the indoor fan to rotate according to the target rotation speed; wherein the target rotation speed is inversely proportional to the number of human bodies.
In an embodiment of the present invention, the self-cleaning control module 12 is further configured to control an air supply direction of an air guide in the air conditioner to be an upward air supply.
In one embodiment of the present invention, the self-cleaning control module 12 is also used for human body detection indoors; if a person is in the room, the air supply direction of the air guide piece in the air conditioner is controlled to be upward air supply.
In an embodiment of the present invention, the self-cleaning control module 12 is specifically configured to detect an indoor coil temperature, and adjust an operating frequency of the compressor, a rotation speed of the indoor fan, and/or an opening degree of an electronic expansion valve according to the detected indoor coil temperature to raise the indoor coil temperature to a second target temperature.
It should be noted that, for details not disclosed in the self-cleaning device of the air conditioner in the embodiment of the present invention, please refer to details disclosed in the self-cleaning method of the air conditioner in the above embodiment of the present invention, which are not described herein again.
To sum up, the self-cleaning device of the air conditioner of the embodiment of the invention can control the compressor to stop before controlling the air conditioner to enter the heating defrosting stage, can avoid the problem that the air conditioner is damaged due to overlarge high-low pressure difference caused by the switching of the 'refrigerating-heating' mode of the air conditioner, and can maintain the rotation of the indoor fan in the stopping process of the compressor, so that the indoor heat exchanger is defrosted in advance by utilizing the indoor air with higher temperature, a heat source can be effectively utilized, the running time of the defrosting stage is favorably shortened, and the waiting time of a user is further shortened.
In order to implement the above embodiment, the present invention further provides an air conditioner 200, as shown in fig. 6, including the self-cleaning device 100 of the air conditioner.
According to the air conditioner provided by the embodiment of the invention, the compressor can be controlled to stop before the air conditioner is controlled to enter the heating defrosting stage, so that the problem that the air conditioner is damaged due to overlarge high-low pressure difference caused by the switching of the 'refrigerating-heating' mode of the air conditioner can be solved, and the rotation of the indoor fan is maintained in the stopping process of the compressor, so that the indoor heat exchanger is defrosted in advance by utilizing the indoor air with higher temperature, a heat source can be effectively utilized, the running time of the defrosting stage is favorably shortened, and the waiting time of a user is further shortened.
In order to implement the above embodiments, the present invention further provides an electronic device 300, as shown in fig. 7, the electronic device 300 includes a memory 31 and a processor 32. The processor 32 reads the executable program code stored in the memory 31 to run a program corresponding to the executable program code, so as to implement the self-cleaning method of the air conditioner.
According to the electronic equipment provided by the embodiment of the invention, the processor executes the computer program stored in the memory, the compressor can be controlled to stop before the air conditioner is controlled to enter the heating defrosting stage, the problem that the air conditioner is damaged due to overlarge high-low pressure difference caused by the switching of the 'refrigerating-heating' mode of the air conditioner can be solved, and the indoor fan is kept to rotate in the stopping process of the compressor, so that the indoor heat exchanger is defrosted in advance by utilizing the indoor air with higher temperature, a heat source can be effectively utilized, the running time of the defrosting stage is favorably shortened, and the waiting time of a user is further shortened.
In order to implement the above embodiments, the present invention further provides a computer-readable storage medium storing a computer program, which when executed by a processor, implements the self-cleaning method of the air conditioner.
The computer readable storage medium of the embodiment of the invention stores the computer program and is executed by the processor, and can control the compressor to stop before controlling the air conditioner to enter the heating defrosting stage, so that the problem that the air conditioner is damaged due to overlarge high-low pressure difference caused by the switching of the cooling-heating modes of the air conditioner can be solved, and the rotation of the indoor fan is maintained in the stopping process of the compressor, so that the indoor heat exchanger is defrosted in advance by utilizing the indoor air with higher temperature, a heat source can be effectively utilized, the running time of the defrosting stage is favorably shortened, and the waiting time of a user is further shortened.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (11)

1. A self-cleaning method of an air conditioner, comprising:
responding a self-cleaning instruction aiming at the air conditioner, and entering a refrigeration and frost-condensation stage;
recognizing that the air conditioner meets the end condition of a refrigeration and frost condensation stage, controlling a compressor in the air conditioner to stop for a preset time, and maintaining the indoor fan to rotate in the stop process of the compressor;
and controlling the air conditioner to enter a heating defrosting stage.
2. The method of claim 1, wherein when the air conditioner is in a refrigeration frost stage, the method further comprises:
and detecting the temperature of the indoor coil, and adjusting the operating frequency of the compressor, the rotating speed of the indoor fan and/or the opening degree of the electronic expansion valve according to the detected temperature of the indoor coil so as to reduce the temperature of the indoor coil to a first target temperature.
3. The method of claim 1, wherein maintaining indoor fan rotation during the compressor shutdown comprises:
and maintaining the rotating speed of the indoor fan to be greater than or equal to the preset rotating speed.
4. The method of claim 1, wherein maintaining indoor fan rotation during the compressor shutdown comprises:
detecting human bodies indoors, determining the target rotating speed of the indoor fan according to the number of the detected human bodies, and controlling the indoor fan to rotate according to the target rotating speed; wherein the target rotation speed is inversely proportional to the number of human bodies.
5. The method according to any one of claims 1-4, further comprising:
and controlling the air supply direction of an air guide in the air conditioner to be upward air supply.
6. The method according to any one of claims 1-4, further comprising:
detecting a human body indoors;
if a person is in the room, the air supply direction of the air guide piece in the air conditioner is controlled to be upward air supply.
7. The method of claim 1 or 2, wherein the controlling the air conditioner to enter a heating and defrosting stage comprises:
and detecting the temperature of the indoor coil, and adjusting the operating frequency of the compressor, the rotating speed of the indoor fan and/or the opening degree of the electronic expansion valve according to the temperature of the indoor coil so as to increase the temperature of the indoor coil to a second target temperature.
8. A self-cleaning apparatus of an air conditioner, comprising:
the instruction response module is used for responding a self-cleaning instruction aiming at the air conditioner and entering a refrigeration and frost-condensation stage;
and the self-cleaning control module is used for identifying that the air conditioner meets the end condition of the refrigeration and frost condensation stage, controlling the compressor in the air conditioner to stop for a preset time, maintaining the indoor fan to rotate in the stop process of the compressor, and controlling the air conditioner to enter the heating and defrosting stage.
9. An air conditioner characterized by comprising the self-cleaning device of the air conditioner as claimed in claim 8.
10. An electronic device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the self-cleaning method of an air conditioner as claimed in any one of claims 1 to 7.
11. A computer-readable storage medium on which a computer program is stored, wherein the program, when executed by a processor, implements the self-cleaning method of an air conditioner according to any one of claims 1 to 7.
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