CN114543254B - Self-cleaning control method of air conditioner, air conditioner and storage medium - Google Patents

Self-cleaning control method of air conditioner, air conditioner and storage medium Download PDF

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Publication number
CN114543254B
CN114543254B CN202011341775.7A CN202011341775A CN114543254B CN 114543254 B CN114543254 B CN 114543254B CN 202011341775 A CN202011341775 A CN 202011341775A CN 114543254 B CN114543254 B CN 114543254B
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CN
China
Prior art keywords
air conditioner
self
oleophobic coating
hydrophilic oleophobic
oil
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Active
Application number
CN202011341775.7A
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Chinese (zh)
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CN114543254A (en
Inventor
杨大伟
陈新厂
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GD Midea Air Conditioning Equipment Co Ltd
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GD Midea Air Conditioning Equipment Co Ltd
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Priority to CN202011341775.7A priority Critical patent/CN114543254B/en
Publication of CN114543254A publication Critical patent/CN114543254A/en
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Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • 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
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • F28F19/04—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of rubber; of plastics material; of varnish
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
    • 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
    • F24F2221/225—Cleaning ducts or apparatus using a liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00—Coatings; Surface treatments
    • F28F2245/02—Coatings; Surface treatments hydrophilic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00—Coatings; Surface treatments
    • F28F2245/08—Coatings; Surface treatments self-cleaning
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The application discloses a self-cleaning control method of an air conditioner, the air conditioner and a storage medium, and belongs to the technical field of air conditioners, wherein the self-cleaning control method of the air conditioner is used in the air conditioner, the air conditioner comprises a heat exchanger, and the surface of a fin of the heat exchanger is provided with a hydrophilic oleophobic coating; the control method comprises the following steps: responding to the self-cleaning instruction, controlling the air conditioner to enter a heating mode to operate so as to melt and aggregate the greasy dirt on the hydrophilic oleophobic coating into oil drops; after oil stains gather into oil drops, controlling the air conditioner to enter a refrigeration mode to operate so as to enable the oil drops to form crystals; after the oil drops form crystals, the air conditioner is controlled to start the wind wheel in a refrigeration mode and rotate at a first preset rotating speed, so that condensed water formed on the hydrophilic oleophobic coating can clear the crystals. The method provided by the application can be used for automatically cleaning the greasy dirt on the surface of the fin of the heat exchanger.

Description

Self-cleaning control method of air conditioner, air conditioner and storage medium
Technical Field
The present application relates to the field of air conditioners, and in particular, to a self-cleaning control method for an air conditioner, and a storage medium.
Background
In the related art, a layer of hydrophilic oleophobic coating is generally added on the fin aluminum foil of a heat exchanger of the heat exchanger, which is arranged in a kitchen or other places with large oil smoke, but the phenomenon of oil dirt adsorption still exists on the fin surface of the heat exchanger in the self-cleaning working process of the air conditioner.
Disclosure of Invention
The application mainly aims to provide a self-cleaning control method of an air conditioner, the air conditioner and a storage medium, and aims to solve the technical problem that oil stains are adsorbed on the surface of a fin of a heat exchanger of the air conditioner in the prior art.
In order to achieve the above object, in a first aspect, a self-cleaning control method of an air conditioner according to an embodiment of the present application is used in an air conditioner, where the air conditioner includes a heat exchanger, and a surface of a fin of the heat exchanger has a hydrophilic oleophobic coating;
the control method comprises the following steps:
responding to a self-cleaning instruction, controlling the air conditioner to enter a heating mode to operate so as to enable oil stains on the hydrophilic oleophobic coating to melt and aggregate into oil drops;
after the oil stains gather into oil drops, controlling the air conditioner to enter a refrigerating mode to operate so as to enable the oil drops to form crystals;
after the oil drops form crystals, the air conditioner is controlled to start a wind wheel in a refrigeration mode and rotate at a first preset rotating speed, so that condensed water formed on the hydrophilic oleophobic coating clears the crystals.
Optionally, after the oil drops form crystals, the air conditioner is controlled to start a wind wheel in a refrigeration mode, and the wind wheel rotates at a first preset rotation speed, so that after the crystals are removed by the condensed water formed on the hydrophilic oleophobic coating, the control method further includes:
and controlling the air conditioner to enter a heating mode to operate so as to dry the condensed water.
Optionally, after the oil stains gather into oil drops, the air conditioner is controlled to enter a refrigeration mode to operate, so that before the oil drops form crystals, the self-cleaning control method further includes:
and controlling the air conditioner to close a heating mode, and controlling the wind wheel to open and rotate at a second preset rotating speed, wherein the second preset rotating speed is larger than the first preset rotating speed.
Optionally, the method further includes:
recording the operation time of the refrigeration mode;
if the running time length is longer than or equal to the preset oil drop crystallization time length, triggering a wind wheel starting instruction;
the control of the air conditioner opens the wind wheel under the refrigeration mode and rotates at a first preset rotating speed so as to enable condensed water formed on the hydrophilic oleophobic coating to clear the crystals, and the control comprises the following steps:
and according to the wind wheel starting instruction, controlling the air conditioner to start the wind wheel in a refrigeration mode and rotate at a first preset rotating speed so as to enable condensed water formed on the hydrophilic oleophobic coating to clear the crystals.
Optionally, the hydrophilic oleophobic coating is characterized in that the water contact angle is less than or equal to 10 degrees, and the oil contact angle is more than or equal to 20 degrees.
Optionally, the hydrophilic oleophobic coating is made of a hydrophilic oleophobic coating, and the hydrophilic oleophobic coating comprises the following components in parts by weight: 55-67 parts of aqueous acrylic emulsion, 5-9 parts of aqueous cross-linking agent, 8-16 parts of water-soluble dispersing agent and 10-15 parts of chromate.
In a second aspect, an embodiment of the present application further provides an air conditioner, including:
the surface of the fin of the heat exchanger is provided with a hydrophilic oleophobic coating;
the self-cleaning control system comprises a processor, a memory and a self-cleaning control program of the air conditioner, wherein the self-cleaning control program of the air conditioner is stored on the memory and can run on the processor, and the self-cleaning control program of the air conditioner is configured to realize the steps of the self-cleaning control method of the air conditioner.
Optionally, the water contact angle of the hydrophilic oleophobic coating is less than or equal to 10 degrees, and the oil contact angle is more than or equal to 20 degrees.
Optionally, the hydrophilic oleophobic coating is made of a hydrophilic oleophobic coating, and the hydrophilic oleophobic coating comprises the following components in parts by weight: 55-67 parts of aqueous acrylic emulsion, 5-9 parts of aqueous cross-linking agent, 8-16 parts of water-soluble dispersing agent and 10-15 parts of chromate.
In a third aspect, an embodiment of the present application further provides a computer readable storage medium, where a self-cleaning control program of an air conditioner is stored in the computer readable storage medium, and when the self-cleaning control program of the air conditioner is executed by a processor, the steps of the self-cleaning control method of the air conditioner are implemented.
According to the technical scheme, the surface of the fin of the heat exchanger of the air conditioner is provided with the hydrophilic oleophobic coating, so that the contact area between oil drops formed on the hydrophilic oleophobic coating and the surface of the hydrophilic oleophobic coating is smaller, oil drops are formed after oil stains on the surface of the fin of the heat exchanger are melted from a heating mode, then crystals are formed after the oil drops are crystallized through a cooling mode, condensed water can be generated on the fin of the heat exchanger through the cooling mode and the opening of the wind wheel, and the crystals are carried away from the fin of the heat exchanger in the falling process of the condensed water, so that the self-cleaning of the oil stains on the surface of the fin of the heat exchanger is completed.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an air conditioner according to an embodiment of the present application;
FIG. 2 is a schematic flow chart of a self-cleaning control method of an air conditioner according to a first embodiment of the present application;
FIG. 3 is a flow chart of a second embodiment of a self-cleaning control method of an air conditioner according to the present application;
FIG. 4 is a flow chart of a third embodiment of a self-cleaning control method of an air conditioner according to the present application;
fig. 5 is a flowchart of a self-cleaning control method of an air conditioner according to a fourth embodiment of the present application.
The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
In the present application, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
Referring to fig. 1, fig. 1 is a schematic hardware structure of an air conditioner according to various embodiments of the present application.
The air conditioner comprises a heat exchanger, wherein the surfaces of fins of the heat exchanger are provided with hydrophilic and oleophobic coatings.
The air conditioner further comprises a controller, and the controller comprises a memory 20, a processor 10 and the like. Those skilled in the art will appreciate that the air conditioner illustrated in fig. 1 may also include more or fewer components than shown, or may combine certain components, or may have a different arrangement of components. The memory 20 has stored thereon a computer program which is simultaneously executed by the processor 10.
The memory 20 is used for storing software programs and various data. The memory 20 may mainly include a memory program area and a memory data area, wherein the memory program area may store an operating system, an application program (controlling the rotational speed of the wind wheel) required for at least one function, and the like; the storage data area may store data or information created according to the use of the air conditioner, etc. In addition, the memory 20 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device. In some embodiments, a non-transitory computer readable storage medium in the memory 20 is used to store at least one instruction for execution by the processor 10 to implement the self-cleaning control method of the air conditioner provided by the method embodiments of the present application.
The processor 10, which is a control center of the air conditioner, connects various parts of the entire air conditioner using various interfaces and lines, performs various functions of the air conditioner and processes data by running or executing software programs and/or modules stored in the memory 20, and calling data stored in the memory 20, thereby performing overall monitoring of the air conditioner. The processor 10 may include one or more processing units; preferably, the processor 10 may integrate an application processor that primarily handles operating systems, user interfaces, applications, etc., with a modem processor that primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 10.
In some embodiments, the controller may further optionally include: a communication interface 30 and at least one peripheral device. The processor 10, the memory 20 and the communication interface 30 may be connected by a bus or signal lines. The various peripheral devices may be connected to the communication interface 30 by buses, signal lines or circuit boards. In particular, the peripheral device may include a radio frequency circuit 40.
The communication interface 30 may be used to connect at least one Input/Output (I/O) related peripheral device to the processor 10 and the memory 20. The communication interface 30 receives instructions from a user via a peripheral device, such as self-cleaning instructions. In some embodiments, the processor 10, the memory 20, and the communication interface 30 are integrated on the same chip or circuit board; in some other embodiments, either or both of the processor 10, the memory 20, and the communication interface 30 may be implemented on separate chips or circuit boards, which is not limited in this embodiment.
The Radio Frequency circuit 40 is used for receiving and transmitting RF (Radio Frequency) signals, also called electromagnetic signals. The radio frequency circuit 40 communicates with a communication network and other communication devices via electromagnetic signals so that instructions and other data transmitted by the user terminal can be obtained. The radio frequency circuit 40 converts an electrical signal into an electromagnetic signal for transmission, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 40 includes: antenna systems, RF transceivers, one or more amplifiers, tuners, oscillators, digital signal processors, codec chipsets, subscriber identity module cards, and so forth. The radio frequency circuitry 40 may communicate with other terminals via at least one wireless communication protocol. The wireless communication protocol includes, but is not limited to: metropolitan area networks, various generations of mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and/or WiFi (Wireless Fidelity ) networks. In some embodiments, the radio frequency circuitry 40 may also include NFC (Near Field Communication, short range wireless communication) related circuitry, which is not limiting of the application. The user terminal can be electronic equipment such as a mobile phone, a tablet computer, a notebook computer, a desktop computer and the like.
Although not shown in fig. 1, the air conditioner may further include a circuit control module, where the circuit control module is used to connect with a mains supply, to implement power control, and ensure normal operation of other components.
It will be appreciated by those skilled in the art that the air conditioner structure shown in fig. 1 is not limiting of the air conditioner and may include more or fewer components than shown, or may combine certain components, or may be a different arrangement of components.
In some embodiments, the hydrophilic oleophobic coating has a water contact angle of 10 ° or less and an oil contact angle of 20 ° or more.
As an option of this embodiment, the hydrophilic oleophobic coating is made of a hydrophilic oleophobic coating comprising, in parts by weight: 55-67 parts of aqueous acrylic emulsion, 5-9 parts of aqueous cross-linking agent, 8-16 parts of water-soluble dispersing agent and 10-15 parts of chromate.
The hydrophilic oleophobic coating is used as a heat exchanger fin aluminum foil coating, and the formed aluminum foil has good oleophobic and hydrophilic properties. In one embodiment, the water contact angle in the hydrophilicity test of the aluminum foil is 6.8 ° and the oil contact angle is 20.1 °.
According to the above hardware structure, various embodiments of the method of the present application are presented.
An embodiment of the application provides a self-cleaning control method of an air conditioner, referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the self-cleaning control method of the air conditioner.
In the embodiment of the application, the self-cleaning control method of the air conditioner comprises the following steps:
and step S101, responding to the self-cleaning instruction, and controlling the air conditioner to enter a heating mode to operate so as to melt and aggregate the oil stains on the hydrophilic oleophobic coating into oil drops.
In this scheme, the air conditioner is used in a kitchen or other environment with kitchen fumes. Kitchen oil smoke comprises grease, alkane, acrolein and other substances, and is attached to the surface layer of the heat exchanger fin after being inhaled by a kitchen air conditioner, so that the kitchen air conditioner has a large oil smoke smell after being restarted, and normal use of a user is affected. Therefore, after a period of use, the air conditioner must clean the indoor heat exchanger to ensure a good, comfortable, fresh air environment.
The self-cleaning instruction may be an instruction sent by a user terminal received by the air conditioner, for example, a voice instruction sent by a mobile phone or a tablet connected with the air conditioner, or an instruction sent based on a virtual key, or an instruction sent by a button or a virtual button on a controller equipped with the air conditioner when triggered. Or, the self-cleaning instruction can be triggered by a touch screen on the air conditioner or a preset function key on the machine body.
It should be noted that, in this solution, the self-cleaning may be automatically performed without receiving a self-cleaning control instruction sent by the user, specifically, it may be determined whether the time from the last time of performing the self-cleaning process reaches a preset threshold, and if the time reaches the preset threshold, the self-cleaning instruction is automatically triggered.
After the air conditioner receives the self-cleaning instruction, the air conditioner is controlled to enter a heating mode to operate, and the temperature of the heat exchanger is increased, so that oil stains on the hydrophilic oleophobic coating on the surface of the heat exchanger fin are melted and gathered into oil drops. In the working process of the air conditioner, the oil dirt adsorbed on the surface of the fins is in a film shape, the adsorption is strong compared with that of the fins, the heated oil is melted and is aggregated into large oil drops due to the oleophobic property, and the contact area and the adsorption force of the oil drops and the hydrophilic oleophobic coating on the fins are small, so that the oil drops are easy to wash away. Because the contact angle of water of the hydrophilic oleophobic coating is smaller than the contact angle of grease oil drops, in the process, water drops formed by residual moisture on the heat exchanger fins before evaporation can cut into the root parts of the oil drops, so that the contact area and the adsorption force of the oil drops and the hydrophilic oleophobic coating on the fins are smaller.
And in the heating process, alkane and acrolein substances adsorbed on the heat exchanger fins are heated and can be analyzed and volatilized.
In this step, the operation duration of the air conditioner in the heating mode is set to be the recommended duration of the air conditioner, for example, 10min, or the recommended duration may be adjusted by the user according to the installation environment of the air conditioner or the interval duration between the self-cleaning modes, for example, 9min or 15min, which is not limited by the comparison of the embodiment, and the oil stains on the hydrophilic and oleophobic coating are melted and aggregated into oil drops.
And S102, after oil stains are gathered into oil drops, controlling the air conditioner to enter a refrigeration mode to operate so as to enable the oil drops to form crystals.
In this step, controlling the air conditioner to enter the cooling mode may be automatically performed after the air conditioner finishes the heating mode. For example, the heating mode operation is finished after the recommended duration of 10min, and then the air conditioner can be controlled to enter the cooling mode. The air conditioner can also finish the heating mode in advance and enter the cooling mode according to the user instruction.
The air conditioner enters a refrigeration mode, but the wind wheel is not started, in the mode, the temperature of the surface of the fin of the heat exchanger is reduced, and liquid grease, namely oil drops, on the fin of the heat exchanger are condensed into larger crystals at low temperature. The crystal is granular.
Step S103, after the oil drops form crystals, controlling the air conditioner to start the wind wheel in a refrigeration mode and rotate at a first preset rotating speed so as to enable condensed water formed on the hydrophilic oleophobic coating to remove the crystals.
And opening the wind wheel in a refrigeration mode, namely, enabling the air conditioner to enter a refrigeration condensation stage. The first preset rotational speed may be a rotational speed corresponding to 20% of the gear of the wind wheel. Because the air conditioner is installed in a kitchen and other environments with kitchen fume, namely, the humidity of the air in the environment is high, a large amount of condensed water is easy to generate on the fin surfaces of the heat exchanger. The condensed water spreads on the surface of the heat exchanger fin to form a water film. The water film flows and sinks under the action of gravity to drive oil drop crystals on the surface of the heat exchanger fin to move to a water collecting disc in the air conditioner, so that the crystals are removed, and the oil stain on the heat exchange fin of the air conditioner is removed. After the crystal is removed, the air conditioner can end the heating mode and close the wind wheel.
It is easy to understand that the self-cleaning mode of the air conditioner in the related art is to cool condensed water and then frost, then heat and defrost water mist, and clean the fin surfaces of the heat exchanger through the condensed water in the process. However, the oil stains are insoluble in water, and the condensed water is difficult to wash away the oil stains on the heat exchanger, so that the problem of oil stain adsorption cannot be solved.
In this embodiment, after the oil stains on the surface of the heat exchanger fins are melted by the heating mode, oil drops with smaller contact area with the hydrophilic oleophobic coating are formed, then the oil drops are formed into crystals by the cooling mode, condensed water is generated on the fins of the heat exchanger by opening the cooling mode and the wind wheel, and the condensed water can bring the oil drop crystals away from the heat exchanger fins, so that self-cleaning of the oil stains on the surface of the fins of the heat exchanger is completed.
Further, based on the first embodiment of the self-cleaning control method of the air conditioner of the present application, a second embodiment of the self-cleaning control method of the air conditioner of the present application is provided. Referring to fig. 3, fig. 3 is a flowchart illustrating a self-cleaning control method of an air conditioner according to a second embodiment of the present application.
In this embodiment, the control method further includes, after step S300:
step S201, responding to the self-cleaning instruction, and controlling the air conditioner to enter a heating mode to operate so as to enable the greasy dirt on the hydrophilic oleophobic coating to melt and aggregate into oil drops.
Step S202, after oil stains are gathered into oil drops, controlling the air conditioner to enter a refrigeration mode to operate so that the oil drops form crystals.
Step S203, after the oil drops form crystals, controlling the air conditioner to start the wind wheel in a refrigeration mode and rotate at a first preset rotating speed so as to enable condensed water formed on the hydrophilic oleophobic coating to remove the crystals.
Step S204, controlling the air conditioner to enter a heating mode to operate so as to dry the condensed water.
In this embodiment, after the crystal is removed, the air conditioner is controlled to enter the heating mode again. The control of the air conditioner into the heating mode may be automatically performed after the air conditioner ends the cooling mode after the recommended period of operation. The air conditioner can also finish the heating mode in advance and enter the cooling mode according to the user instruction.
The air conditioner enters the heating mode again to heat the heat exchanger fins, so that residual condensed water on the heat exchanger fins can be dried, and otherwise, the residual condensed water influences the use of the heat exchanger.
In this step, the operation duration of the air conditioner in the heating mode is set to be the recommended duration of the air conditioner, for example, 10min, or the recommended duration may be adjusted by the user according to the installation environment of the air conditioner or the interval duration between the self-cleaning modes, for example, 9min or 15min, which is not limited by the comparison of the embodiment, and the oil stains on the hydrophilic and oleophobic coating are melted and aggregated into oil drops.
Further, based on the first embodiment and the second embodiment of the self-cleaning control method of the air conditioner according to the present application, a third embodiment of the self-cleaning control method of the air conditioner according to the present application is provided. Referring to fig. 4, fig. 4 is a flowchart illustrating a third embodiment of a self-cleaning control method of an air conditioner according to the present application.
In this embodiment, the self-cleaning control method of the air conditioner includes:
and step 301, responding to the self-cleaning instruction, and controlling the air conditioner to enter a heating mode to operate so as to melt and aggregate the oil stains on the hydrophilic oleophobic coating into oil drops.
Step S302, the air conditioner is controlled to close the heating mode, and the wind wheel is controlled to be opened and rotated at a second preset rotating speed, wherein the second preset rotating speed is larger than the first preset rotating speed.
In the step, after oil stains on the hydrophilic oleophobic coating are melted and gathered into oil drops, the heating mode can be controlled to be closed, and then the wind wheel is started to operate to form air flow, so that alkane and acrolein substances in the heating mode are heated to be analyzed and volatilized to produce other substances to be blown out, deposition of the other substances and the inside of an air conditioner are avoided, and substances such as alkane and acrolein are reformed in a subsequent refrigeration mode. Thereby improving the cleaning effect and the service life of the air conditioner. In order to improve the cleaning effect, the second preset rotational speed may be a gear of 100% of the wind wheel.
The rotation time of the air conditioner wind wheel at the second preset rotation speed can be the recommended time built in the air conditioner, for example, 5min, or the recommended time can be adjusted by a user according to the installation environment of the air conditioner or the interval time between the self-cleaning modes, for example, 3min or 8min, and the comparison of the embodiment is not limited.
Step S303, after the oil stains are gathered into oil drops, controlling the air conditioner to enter a refrigeration mode to operate so as to enable the oil drops to form crystals.
Step S304, after the oil drops form crystals, controlling the air conditioner to start the wind wheel in a refrigeration mode and rotate at a first preset rotating speed so as to enable condensed water formed on the hydrophilic oleophobic coating to clear the crystals.
Step S305, controlling the air conditioner to enter a heating mode to dry the condensed water.
In this embodiment, alkane and acrolein substances adsorbed on the fins of the heat exchanger are heated, resolved and volatilized through a heating mode of the air conditioner, and then other volatilized substances in the air conditioner are blown out through the wind wheel, so that the cleaning effect on peculiar smell substances such as alkane and acrolein substances is improved, the phenomenon that the oil smoke smell of air outlet of the air conditioner is heavier is improved, and the user experience is improved.
Further, based on the above embodiment of the self-cleaning control method of the air conditioner of the present application, a fourth embodiment of the self-cleaning control method of the air conditioner of the present application is provided. Referring to fig. 5, fig. 5 is a flowchart illustrating a self-cleaning control method of an air conditioner according to a fourth embodiment of the present application.
In this embodiment, the self-cleaning control method of the air conditioner includes the following steps:
and step S401, responding to the self-cleaning instruction, and controlling the air conditioner to enter a heating mode to operate so as to melt and aggregate the oil stains on the hydrophilic oleophobic coating into oil drops.
And step S402, after the oil stains are gathered into oil drops, controlling the air conditioner to enter a refrigeration mode to operate so as to enable the oil drops to form crystals.
Step S403, recording the operation duration of the cooling mode.
And step S404, triggering a wind wheel starting instruction if the running time length is greater than or equal to the preset oil drop crystallization time length.
Step S405, according to the wind wheel starting instruction, the air conditioner is controlled to start the wind wheel in a refrigeration mode, and the wind wheel rotates at a first preset rotating speed, so that condensed water formed on the hydrophilic oleophobic coating can clear crystals.
In step S402 of this embodiment, the operation time of the air conditioner for starting the wind wheel in the cooling mode may be 10min of the preset oil drop crystallization time period recommended for the air conditioner, for example, after the air conditioner is operated in the cooling mode for 10min, the wind wheel may be started to cool the condensed water.
It is easy to understand that the preset oil droplet crystallization period may also be adjusted by the user according to the installation environment of the air conditioner or the interval period between the self-cleaning modes, for example, 9min or 15min, which is not limited in this embodiment.
In addition, the embodiment of the application also provides a storage medium, the storage medium stores a self-cleaning control program of the air conditioner, and the self-cleaning control program of the air conditioner realizes the steps of the self-cleaning control method of the air conditioner when being executed by a processor. Therefore, a detailed description will not be given here. In addition, the description of the beneficial effects of the same method is omitted. For technical details not disclosed in the embodiments of the computer-readable storage medium according to the present application, please refer to the description of the method embodiments of the present application. As an example, the program instructions may be deployed to be executed on one computing device or on multiple computing devices at one site or distributed across multiple sites and interconnected by a communication network.
Those skilled in the art will appreciate that implementing all or part of the above-described methods may be accomplished by way of computer programs, which may be stored on a computer-readable storage medium, and which, when executed, may comprise the steps of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random access Memory (Random AccessMemory, RAM), or the like.
From the above description of the embodiments, it will be apparent to those skilled in the art that the present application may be implemented by means of software plus necessary general purpose hardware, or of course by means of special purpose hardware including application specific integrated circuits, special purpose CPUs, special purpose memories, special purpose components, etc. Generally, functions performed by computer programs can be easily implemented by corresponding hardware, and specific hardware structures for implementing the same functions can be varied, such as analog circuits, digital circuits, or dedicated circuits. However, a software program implementation is a preferred embodiment for many more of the cases of the present application. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a readable storage medium, such as a floppy disk, a usb disk, a removable hard disk, a Read-only memory (ROM), a random-access memory (RAM, randomAccessMemory), a magnetic disk or an optical disk of a computer, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments of the present application.

Claims (10)

1. The self-cleaning control method of the air conditioner is characterized by being used in the air conditioner, wherein the air conditioner comprises a heat exchanger, and the surface of a fin of the heat exchanger is provided with a hydrophilic oleophobic coating;
the control method comprises the following steps:
responding to a self-cleaning instruction, controlling the air conditioner to enter a heating mode to operate so as to enable oil stains on the hydrophilic oleophobic coating to melt and aggregate into oil drops;
after the oil stains gather into oil drops, controlling the air conditioner to enter a refrigerating mode to operate so as to enable the oil drops to form crystals;
after the oil drops form crystals, the air conditioner is controlled to start a wind wheel in a refrigeration mode and rotate at a first preset rotating speed, so that condensed water formed on the hydrophilic oleophobic coating clears the crystals.
2. The method according to claim 1, wherein after the oil drops form crystals, the air conditioner is controlled to turn on a wind wheel in a cooling mode and rotate at a first preset rotation speed, so that condensed water formed on the hydrophilic oleophobic coating clears the crystals, and the method further comprises:
and controlling the air conditioner to enter a heating mode to operate so as to dry the condensed water.
3. The self-cleaning control method of an air conditioner according to claim 1, wherein after the oil is gathered into oil droplets, the air conditioner is controlled to enter a cooling mode to operate, so that before the oil droplets form crystals, the self-cleaning control method further comprises:
and controlling the air conditioner to close a heating mode, and controlling the wind wheel to open and rotate at a second preset rotating speed, wherein the second preset rotating speed is larger than the first preset rotating speed.
4. The self-cleaning control method of an air conditioner according to claim 1, wherein the self-cleaning control method further comprises:
recording the operation time of the refrigeration mode;
if the running time length is longer than or equal to the preset oil drop crystallization time length, triggering a wind wheel starting instruction;
the control of the air conditioner opens the wind wheel under the refrigeration mode and rotates at a first preset rotating speed so as to enable condensed water formed on the hydrophilic oleophobic coating to clear the crystals, and the control comprises the following steps:
and according to the wind wheel starting instruction, controlling the air conditioner to start the wind wheel in a refrigeration mode and rotate at a first preset rotating speed so as to enable condensed water formed on the hydrophilic oleophobic coating to clear the crystals.
5. The method according to any one of claims 1 to 4, wherein the hydrophilic oleophobic coating has a water contact angle of 10 ° or less and an oil contact angle of 20 ° or more.
6. The self-cleaning control method of an air conditioner according to claim 5, wherein the hydrophilic oleophobic coating is made of a hydrophilic oleophobic coating, and the hydrophilic oleophobic coating comprises, in parts by weight: 55-67 parts of aqueous acrylic emulsion, 5-9 parts of aqueous cross-linking agent, 8-16 parts of water-soluble dispersing agent and 10-15 parts of chromate.
7. An air conditioner, characterized in that the air conditioner comprises:
the surface of the fin of the heat exchanger is provided with a hydrophilic oleophobic coating;
a processor, a memory and a self-cleaning control program of an air conditioner stored on the memory and operable on the processor, the self-cleaning control program of the air conditioner being configured to implement the steps of the self-cleaning control method of an air conditioner as claimed in any one of claims 1 to 6.
8. The air conditioner of claim 7, wherein the hydrophilic oleophobic coating has a water contact angle of 10 ° or less and an oil contact angle of 20 ° or more.
9. The air conditioner of claim 8, wherein the hydrophilic oleophobic coating is made of a hydrophilic oleophobic coating comprising, in parts by weight: 55-67 parts of aqueous acrylic emulsion, 5-9 parts of aqueous cross-linking agent, 8-16 parts of water-soluble dispersing agent and 10-15 parts of chromate.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a self-cleaning control program of an air conditioner, which when executed by a processor, implements the steps of the self-cleaning control method of an air conditioner according to any one of claims 1 to 6.
CN202011341775.7A 2020-11-24 2020-11-24 Self-cleaning control method of air conditioner, air conditioner and storage medium Active CN114543254B (en)

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CN110940224A (en) * 2018-09-21 2020-03-31 青岛海尔空调器有限总公司 Heat exchanger
JP2020085438A (en) * 2018-11-22 2020-06-04 グリー エレクトリック アプライアンシーズ インク オブ ズーハイＧｒｅｅ Ｅｌｅｃｔｒｉｃ Ａｐｐｌｉａｎｃｅｓ， Ｉｎｃ． Ｏｆ Ｚｈｕｈａｉ Evaporator self-cleaning method capable of increasing thickness of frost layer and air conditioner

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Publication number Priority date Publication date Assignee Title
CN202057240U (en) * 2011-04-12 2011-11-30 美的集团武汉制冷设备有限公司 Kitchen air conditioner
JP2013092289A (en) * 2011-10-25 2013-05-16 Kagawa Univ Super-hydrophobic and oleophobic heat exchanger member, method for manufacturing the same, and heat exchanger manufactured by using them
JP2020034220A (en) * 2018-08-29 2020-03-05 パナソニックＩｐマネジメント株式会社 Heat exchanger formed with antifouling coating flim
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