CN114543254A - 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
CN114543254A
CN114543254A CN202011341775.7A CN202011341775A CN114543254A CN 114543254 A CN114543254 A CN 114543254A CN 202011341775 A CN202011341775 A CN 202011341775A CN 114543254 A CN114543254 A CN 114543254A
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CN
China
Prior art keywords
air conditioner
self
oleophobic coating
control method
cleaning control
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Granted
Application number
CN202011341775.7A
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Chinese (zh)
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CN114543254B (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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    • 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 invention discloses a self-cleaning control method of an air conditioner, the air conditioner and a storage medium, belonging 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 a self-cleaning instruction, controlling the air conditioner to enter a heating mode to operate so as to melt oil stains on the hydrophilic oleophobic coating and gather the oil stains into oil drops; after the 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; and 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 that the crystals are removed by condensed water formed on the hydrophilic oleophobic coating. The method provided by the invention can be used for automatically cleaning oil stains 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 invention relates to the technical field of air conditioners, in particular to a self-cleaning control method of an air conditioner, the air conditioner and a storage medium.
Background
In the related art, a hydrophilic and oleophobic coating is generally added on an aluminum foil of a heat exchanger fin on the surface of the fin of an air conditioner installed in a kitchen or other places with large oil smoke, but in the self-cleaning working process of the air conditioner, the surface of the fin of the heat exchanger still has the phenomenon of oil stain adsorption.
Disclosure of Invention
The invention 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 for an air conditioner is provided in an embodiment of the present invention, where the air conditioner includes a heat exchanger, and a fin surface 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 that oil stains on the hydrophilic oleophobic coating are melted and gathered into oil drops;
after the 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;
and after the oil drops form crystals, controlling the air conditioner to start a wind wheel in a refrigeration mode and rotate at a first preset rotating speed so that the crystals are removed by condensed water formed on the hydrophilic oleophobic coating.
Optionally, after the oil drops form crystals, the air conditioner is controlled to start the wind wheel in a cooling mode and rotate at a first preset rotating speed, so that after the crystals are removed by condensed water formed on the hydrophilic and 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 are gathered into oil drops, the air conditioner is controlled to enter a cooling 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 be opened and rotate at a second preset rotating speed, wherein the second preset rotating speed is greater than the first preset rotating speed.
Optionally, before controlling the air conditioner to start the wind wheel in the cooling mode and rotate at a first preset rotation speed to remove the crystals by the condensed water formed on the hydrophilic oleophobic coating, the self-cleaning control method further includes:
recording the running time of the refrigeration mode;
if the operation time is longer than or equal to the preset oil drop crystallization time, triggering a wind wheel starting instruction;
control the air conditioner opens the wind wheel under refrigeration mode to rotate with first default rotational speed, so that the comdenstion water that forms on the hydrophilic oleophobic coating will the crystalline solid is clear away, include:
and controlling the air conditioner to start the wind wheel in a refrigeration mode according to the wind wheel starting instruction, and rotating at a first preset rotating speed so that the crystal is removed by the condensed water formed on the hydrophilic oleophobic coating.
Optionally, the hydrophilic oleophobic coating is characterized in that the water contact angle of the hydrophilic oleophobic coating is not more than 10 degrees, and the oil contact angle is not less than 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 water-based acrylic emulsion, 5-9 parts of water-based cross-linking agent, 8-16 parts of water-soluble dispersant and 10-15 parts of chromate.
In a second aspect, an embodiment of the present invention further provides an air conditioner, including:
the surface of a fin of the heat exchanger is provided with a hydrophilic oleophobic coating;
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 not more than 10 degrees, and the oil contact angle is not less than 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 water-based acrylic emulsion, 5-9 parts of water-based cross-linking agent, 8-16 parts of water-soluble dispersant and 10-15 parts of chromate.
In a third aspect, an embodiment of the present invention further provides a computer-readable storage medium, where a self-cleaning control program of an air conditioner is stored on the computer-readable storage medium, and when executed by a processor, the self-cleaning control program of the air conditioner implements the steps of the self-cleaning control method of the air conditioner.
According to the technical scheme, the hydrophilic oleophobic coating is arranged on the surface of the fin of the heat exchanger of the air conditioner, 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 in a heating mode, then the oil drops are crystallized in a cooling mode to form crystals, the fins of the heat exchanger can be opened in the cooling mode and a wind wheel to generate condensed water, and the crystals are taken 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 invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a self-cleaning control method of an air conditioner according to a first embodiment of the present invention;
FIG. 3 is a flowchart illustrating a self-cleaning control method of an air conditioner according to a second embodiment of the present invention;
FIG. 4 is a flowchart illustrating a self-cleaning control method of an air conditioner according to a third embodiment of the present invention;
fig. 5 is a flowchart illustrating a self-cleaning control method of an air conditioner according to a fourth embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic diagram of a hardware structure of an air conditioner provided in various embodiments of the present invention.
The air conditioner comprises a heat exchanger, wherein the surface of a fin of the heat exchanger is provided with a hydrophilic oleophobic coating.
The air conditioner further comprises a controller, wherein the controller comprises a storage 20, a processor 10 and the like. Those skilled in the art will appreciate that the air conditioner shown in fig. 1 may also include more or fewer components than shown, or combine certain components, or a different arrangement of components. The memory 20 has stored thereon a computer program which is executed simultaneously by the processor 10.
The memory 20 may be used to store software programs and various data. The memory 20 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program (controlling the rotational speed of the wind turbine) 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, or the like. Further, 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 for storing 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 in 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, and performs various functions of the air conditioner and processes data by operating 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. Processor 10 may include one or more processing units; preferably, the processor 10 may integrate an application processor, which primarily handles operating systems, user interfaces, application programs, etc., and a modem processor, which 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 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 bus or signal lines. Various peripheral devices may be connected to communication interface 30 via a bus, signal line, or circuit board. In particular, the peripheral device may include radio frequency circuitry 40.
Communication interface 30 may be used to connect at least one peripheral device associated with I/O (Input/Output) to processor 10 and memory 20. The communication interface 30 receives instructions from a user, such as self-cleaning instructions, through a peripheral device. In some embodiments, processor 10, memory 20, and communication interface 30 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 10, the memory 20 and the communication interface 30 may be implemented on a single chip or circuit board, 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 rf circuit 40 communicates with a communication network and other communication devices through electromagnetic signals, so as to obtain instructions and other data sent by the user terminal. The rf circuit 40 converts an electrical signal into an electromagnetic signal to transmit, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 40 comprises: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a subscriber identity module card, and so forth. The radio frequency circuit 40 may communicate with other terminals via at least one wireless communication protocol. The wireless communication protocols include, but are not limited to: metropolitan area networks, various generation mobile communication networks (2G, 3G, 4G, and 5G), Wireless local area networks, and/or WiFi (Wireless Fidelity) networks. In some embodiments, the radio frequency circuit 40 may further include NFC (Near Field Communication) related circuits, which are not limited in this application. The user terminal can be an electronic device 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, implement power control, and ensure normal operation of other components.
Those skilled in the art will appreciate that the air conditioner configuration shown in fig. 1 is not intended to be limiting of the air conditioner and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.
In some embodiments, the hydrophilic oleophobic coating has a water contact angle ≦ 10 and an oil contact angle ≦ 20.
As an option of this embodiment, the hydrophilic oleophobic coating is made of a hydrophilic oleophobic coating, and the hydrophilic oleophobic coating includes, in parts by weight: 55-67 parts of water-based acrylic emulsion, 5-9 parts of water-based cross-linking agent, 8-16 parts of water-soluble dispersant and 10-15 parts of chromate.
The hydrophilic oleophobic coating is used as an aluminum foil coating of the heat exchanger fin, and the formed aluminum foil has good oleophobic and hydrophilic characteristics. In one example, the water contact angle and the oil contact angle in the aluminum foil hydrophilicity test were 6.8 ° and 20.1 °.
Various embodiments of the method of the present invention are presented in terms of the above-described hardware architecture.
An embodiment of the present invention provides a self-cleaning control method for an air conditioner, and referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the self-cleaning control method for an air conditioner according to the present invention.
In the embodiment of the invention, the self-cleaning control method of the air conditioner comprises the following steps:
and S101, responding to a self-cleaning instruction, controlling the air conditioner to enter a heating mode to operate so as to melt oil stains on the hydrophilic oleophobic coating and gather the oil stains into oil drops.
In the scheme, the air conditioner is used in a kitchen or other environments with kitchen oil smoke. The kitchen oil smoke comprises substances such as grease, alkane, acrolein and the like, and is attached to the surface layer of the heat exchanger fin after being sucked by the kitchen air conditioner, so that the kitchen air conditioner has great oil smoke smell after being restarted, and the normal use of a user is influenced. Therefore, after the air conditioner is used for a period of time, the indoor heat exchanger must be cleaned to ensure a good quality, comfortable and 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 to the air conditioner, or an instruction sent based on a virtual key, and may also be an instruction sent by a button on a controller equipped with the air conditioner or a virtual button when triggered. Or, the self-cleaning instruction can be triggered by a touch screen on the air conditioner or a function key preset on the machine body.
It should be noted that, in the present scheme, self-cleaning may also be automatically performed without receiving a self-cleaning control instruction sent by a user, specifically, whether the time from the last self-cleaning processing reaches a preset threshold may be determined, and if the time reaches the preset threshold, the self-cleaning instruction is automatically triggered.
After receiving 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 and oleophobic coating on the surface of the heat exchanger fin are melted and aggregated into oil drops. In the working process of the air conditioner, oil stains adsorbed on the surfaces of the fins are in a film shape and are strongly adsorbed by the fins, the oil stains are melted after being heated and are aggregated into large oil drops due to oleophobic property, and the contact area and the adsorption force between the oil drops and the hydrophilic oleophobic coating on the fins are small and are easy to wash away. Because the contact angle of water of the hydrophilic oleophobic coating is smaller than the contact angle of oil drops, in the process, water drops formed by residual moisture on the heat exchanger fins before evaporation cut into the root 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 desorbed and volatilized.
In this step, the recommended time length built in the air conditioner is adopted for the operation time length of the air conditioner in the heating mode, for example, 10min, or the recommended time length can be adjusted by a user according to the installation environment of the air conditioner or the interval time length between the self-cleaning modes, for example, 9min or 15 min.
And S102, after the 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.
In this step, controlling the air conditioner to enter the cooling mode may be performed automatically after the air conditioner finishes the heating mode. For example, the recommended operation time of the heating mode is finished after 10min, and at this time, the air conditioner can be controlled to enter the cooling mode. The air conditioner can also finish the heating mode in advance according to the user instruction and enter the cooling mode.
The air conditioner enters a refrigeration mode, but the wind wheel is not opened, in the mode, the temperature of the surface of the fins of the heat exchanger is reduced, and liquid grease, namely oil drops, on the fins of the heat exchanger are condensed into larger crystals at low temperature. The crystals are in the form of granules.
And step S103, after the oil drops form crystals, controlling the air conditioner to start the wind wheel in a refrigeration mode, and rotating at a first preset rotating speed so that the crystals are removed by the condensed water formed on the hydrophilic oleophobic coating.
And (4) starting the wind wheel in the refrigeration mode, namely, the air conditioner enters a refrigeration and water condensation stage. The first preset rotational speed may be a rotational speed corresponding to a 20% gear of the wind wheel. Since the air conditioner is installed in a kitchen and other environments with cooking fumes, i.e., environments where the humidity of air is high, a large amount of condensed water is easily generated on the fin surface of the heat exchanger. The condensed water is spread 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 surfaces of the heat exchanger fins to move towards a water collecting tray in the air conditioner, so that the crystals are removed, and oil stains on the heat exchange fins of the air conditioner are removed. After the crystals are removed, the air conditioner can end the heating mode and turn off the wind wheel.
It is easy to understand that the self-cleaning mode of the air conditioner in the related art is to refrigerate the condensed water and then frost, then heat the frost and dry the water mist, and in the process, the surface of the fin of the heat exchanger is cleaned by the condensed water. However, the oil stain is insoluble in water, and the condensate water is difficult to wash the oil stain on the heat exchanger, so that the problem of oil stain adsorption cannot be solved.
In the embodiment, oil drops with small contact area with the hydrophilic oleophobic coating are formed after oil stains on the surface of the heat exchanger fin are melted in the heating mode, then the oil drops are formed into crystals in the refrigerating mode, the cooling mode and the wind wheel are started to enable the fins of the heat exchanger to generate condensed water, and the condensed water can carry the oil drop crystals away from the heat exchanger fin, so that the oil stains on the surface of the fin of the heat exchanger are automatically cleaned.
Further, based on the first embodiment of the self-cleaning control method of the air conditioner of the present invention, a second embodiment of the self-cleaning control method of the air conditioner of the present invention is provided. Referring to fig. 3, fig. 3 is a flow chart illustrating a self-cleaning control method of an air conditioner according to a second embodiment of the present invention.
In this embodiment, after step S300, the control method further includes:
step S201, responding to a self-cleaning instruction, controlling the air conditioner to enter a heating mode to operate so as to melt oil stains on the hydrophilic oleophobic coating and gather the oil stains into oil drops.
And step S202, after the 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.
And S203, after the oil drops form crystals, controlling the air conditioner to start the wind wheel in a refrigeration mode, and rotating at a first preset rotating speed so that the crystals are removed by the condensed water formed on the hydrophilic oleophobic coating.
And 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. Controlling the air conditioner to enter the heating mode may be performed automatically after the air conditioner ends the cooling mode after the recommended duration of operation. The air conditioner can also finish the heating mode in advance according to the user instruction and enter the cooling mode.
The air conditioner enters the heating mode again to heat the fins of the heat exchanger, so that residual condensed water on the fins of the heat exchanger can be dried, and the residual condensed water influences the use of the heat exchanger.
In this step, the recommended time length built in the air conditioner is adopted for the operation time length of the air conditioner in the heating mode, for example, 10min, or the recommended time length can be adjusted by a user according to the installation environment of the air conditioner or the interval time length between the self-cleaning modes, for example, 9min or 15 min.
Further, based on the first embodiment and the second embodiment of the self-cleaning control method of the air conditioner of the present invention, a third embodiment of the self-cleaning control method of the air conditioner of the present invention is provided. Referring to fig. 4, fig. 4 is a flow chart illustrating a self-cleaning control method of an air conditioner according to a third embodiment of the present invention.
In this embodiment, the self-cleaning control method of the air conditioner includes:
and S301, responding to a self-cleaning instruction, controlling the air conditioner to enter a heating mode to operate so as to melt oil stains on the hydrophilic oleophobic coating and gather the oil stains into oil drops.
And S302, controlling the air conditioner to close the heating mode, and controlling the wind wheel to be started and rotate at a second preset rotating speed, wherein the second preset rotating speed is greater than the first preset rotating speed.
In the step, after oil stains on the hydrophilic oleophobic coating are melted and aggregated into oil drops, the heating mode can be controlled to be closed, then the wind wheel is started to operate to form air flow, so that other substances generated by the fact that the alkane and the acrolein substance are heated and can be analyzed and volatilized in the heating mode are blown out, the other substances are prevented from being deposited in the air conditioner, and then the alkane, the acrolein and other substances are reformed in the subsequent refrigeration mode. Thereby improving the cleaning effect and the service life of the air conditioner. To improve the cleaning effect, the second preset rotation speed may be 100% gear of the wind wheel.
The rotation time of the air conditioner wind wheel rotating at the second preset rotation speed may be a recommended time built in the air conditioner, for example, 5min, or the recommended time may be adjusted by a user according to an installation environment of the air conditioner or an interval time between self-cleaning modes, for example, 3min or 8min, which is not limited by the comparison in this embodiment.
And step S303, after the 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.
And step S304, after the oil drops form crystals, controlling the air conditioner to start the wind wheel in a refrigeration mode, and rotating at a first preset rotating speed so that the crystals are removed by the condensed water formed on the hydrophilic oleophobic coating.
And S305, controlling the air conditioner to enter a heating mode to operate so as to dry the condensed water.
In the embodiment, the alkane and the acrolein substance adsorbed on the heat exchanger fin are heated, analyzed and volatilized through the heating mode of the air conditioner, and then the volatilized other substances in the air conditioner are blown out through the wind wheel, so that the cleaning effect on the odor substances such as the alkane and the acrolein substance is improved, the phenomenon of heavy oil smoke smell of air outlet of the air conditioner is improved, and the user experience is improved.
Further, based on the foregoing embodiment of the self-cleaning control method of the air conditioner of the present invention, a fourth embodiment of the self-cleaning control method of the air conditioner of the present invention 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 invention.
In this embodiment, the self-cleaning control method of the air conditioner includes the following steps:
step S401, responding to a self-cleaning instruction, controlling the air conditioner to enter a heating mode to operate so that oil stains on the hydrophilic oleophobic coating are melted and gathered into oil drops.
And S402, after the 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.
And step S403, recording the running time of the refrigeration mode.
And S404, if the operation time is longer than or equal to the preset oil drop crystallization time, triggering a wind wheel starting instruction.
And S405, controlling the air conditioner to start the wind wheel in a refrigeration mode according to a wind wheel starting instruction, and rotating at a first preset rotating speed so that the crystal is removed by the condensed water formed on the hydrophilic oleophobic coating.
In step S402 of this embodiment, the operation time of the air conditioner in the cooling mode when the wind wheel is turned on to operate may be 10min of a preset oil droplet crystallization time period recommended to be built in the air conditioner, for example, after the air conditioner is operated in the cooling mode for 10min, the wind wheel may be turned on to refrigerate the condensate water.
It is easy to understand that the preset oil drop crystallization time period may also be adjusted by the user according to the installation environment of the air conditioner or the time period of the interval between the self-cleaning modes, for example, 9min or 15min, which is not limited by the embodiment.
In addition, an embodiment of the present invention further provides a storage medium, where a self-cleaning control program of an air conditioner is stored on the storage medium, and the self-cleaning control program of the air conditioner implements the steps of the above self-cleaning control method of the air conditioner when executed by a processor. Therefore, a detailed description thereof will be omitted. In addition, the beneficial effects of the same method are not described in detail. For technical details not disclosed in embodiments of the computer-readable storage medium referred to in the present application, reference is made to the description of embodiments of the method of the present application. It is determined that, by way of 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.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes 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 (RAM), or the like.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present invention may be implemented by software plus necessary general hardware, and may also be implemented by special hardware including special integrated circuits, special CPUs, special memories, special components and the like. Generally, functions performed by computer programs can be easily implemented by corresponding hardware, and specific hardware structures for implementing the same functions may be various, such as analog circuits, digital circuits, or dedicated circuits. However, the implementation of a software program is a more preferable embodiment for the present invention. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, where the computer software product is 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), a magnetic disk or an optical disk of a computer, and includes instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.

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 that oil stains on the hydrophilic oleophobic coating are melted and gathered into oil drops;
after the 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;
and after the oil drops form crystals, controlling the air conditioner to start a wind wheel in a refrigeration mode and rotate at a first preset rotating speed so that the crystals are removed by condensed water formed on the hydrophilic oleophobic coating.
2. A self-cleaning control method for an air conditioner according to claim 1, wherein after the oil drops form crystals, the air conditioner is controlled to start a wind wheel in a cooling mode and rotate at a first preset rotation speed, so that after the crystals are removed by condensed water formed on the hydrophilic and oleophobic coating, the control method further comprises:
and controlling the air conditioner to enter a heating mode to operate so as to dry the condensed water.
3. A self-cleaning control method of an air conditioner according to claim 1, wherein before controlling the air conditioner to enter a cooling mode to run after the oil is collected into oil drops and before the oil drops are crystallized, the self-cleaning control method further comprises:
and controlling the air conditioner to close a heating mode, and controlling the wind wheel to be opened and rotate at a second preset rotating speed, wherein the second preset rotating speed is greater than the first preset rotating speed.
4. A self-cleaning control method for an air conditioner according to claim 1, wherein before controlling the air conditioner to turn on a wind wheel in a cooling mode and rotate at a first preset rotation speed to remove the crystals by condensed water formed on the hydrophilic and oleophobic coating, the self-cleaning control method further comprises:
recording the running time of the refrigeration mode;
if the operation time is longer than or equal to the preset oil drop crystallization time, triggering a wind wheel starting instruction;
the control the air conditioner opens the wind wheel under the refrigeration mode to rotate with first preset rotational speed, so that the comdenstion water that forms on the hydrophilic oleophobic coating will the crystal body is clear away, include:
and controlling the air conditioner to start the wind wheel in a refrigeration mode according to the wind wheel starting instruction, and rotating at a first preset rotating speed so that the crystal is removed by the condensed water formed on the hydrophilic oleophobic coating.
5. A self-cleaning control method of an air conditioner according to any one of claims 1 to 4, characterized in that the water contact angle of the hydrophilic oleophobic coating is not more than 10 ° and the oil contact angle is not less than 20 °.
6. The self-cleaning control method of the air conditioner according to claim 5, characterized in that 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 water-based acrylic emulsion, 5-9 parts of water-based cross-linking agent, 8-16 parts of water-soluble dispersant and 10-15 parts of chromate.
7. An air conditioner, characterized in that the air conditioner comprises:
the surface of a 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 executable 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 the air conditioner as claimed in any one of claims 1 to 6.
8. The air conditioner of claim 7, wherein the water contact angle of the hydrophilic oleophobic coating is not less than 10 degrees and the oil contact angle is not less than 20 degrees.
9. The air conditioner of claim 8, characterized in that the hydrophilic oleophobic coating is made of hydrophilic oleophobic coating, and the hydrophilic oleophobic coating comprises the following components in parts by weight: 55-67 parts of water-based acrylic emulsion, 5-9 parts of water-based cross-linking agent, 8-16 parts of water-soluble dispersant 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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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
CN110319519A (en) * 2019-07-31 2019-10-11 宁波东大空调设备有限公司 A kind of kitchen fresh air absolute oil cigarette air conditioner combined machine group
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
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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* Cited by examiner, † Cited by third party
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
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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