CN110986247B - Air conditioner and fan and air duct self-cleaning control method thereof - Google Patents
Air conditioner and fan and air duct self-cleaning control method thereof Download PDFInfo
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- CN110986247B CN110986247B CN201911077140.8A CN201911077140A CN110986247B CN 110986247 B CN110986247 B CN 110986247B CN 201911077140 A CN201911077140 A CN 201911077140A CN 110986247 B CN110986247 B CN 110986247B
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- 238000000034 method Methods 0.000 title claims abstract description 98
- 238000004140 cleaning Methods 0.000 title claims abstract description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 113
- 239000000428 dust Substances 0.000 claims abstract description 91
- 238000005057 refrigeration Methods 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000007599 discharging Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 43
- 238000001816 cooling Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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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
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
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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
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/22—Cleaning ducts or apparatus
- F24F2221/225—Cleaning ducts or apparatus using a liquid
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
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- Human Computer Interaction (AREA)
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- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioners, and provides an air conditioner and a self-cleaning control method of a fan and an air channel thereof, aiming at solving the problems of high cost and inconvenience in dust cleaning of the fan and the air channel of the existing air conditioner indoor unit, wherein the control method comprises the following steps: starting a refrigeration mode and controlling a first fan to rotate at a first rotating speed for a first set time period to form a first water film on the surface of an evaporator; controlling the first fan to reversely rotate at a second rotating speed, then rotate at a third rotating speed, and circularly executing the step at least once to enable dust attached to the fan and the air duct to be thrown out and attached to the first water film; and controlling the first fan to operate at the fourth rotating speed for a third set time period to enable flowing condensed water to be formed on the surface of the evaporator, and discharging dust by means of the flowing condensed water. The control method provided by the invention can realize the deep automatic cleaning of the dust in the fan and the air duct of the indoor unit, does not need to carry out a dismounting machine, does not need to be provided with a special cleaning tool, and can greatly reduce the dust cleaning cost.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner, a fan of the air conditioner and a self-cleaning control method of an air duct of the air conditioner.
Background
An air conditioner is one of household appliances essential for improving indoor environment in modern families. A household air conditioner is generally a split wall type air conditioner, and includes an indoor unit, in which a cross flow fan is generally disposed to uniformly expand a lateral blowing range, and an outdoor unit, in which an axial flow fan is generally disposed.
After the air conditioner is used for a period of time, no matter an indoor unit or an outdoor unit, dust is easily accumulated on a fan impeller of the air conditioner and in an air channel, bacteria are easily bred after the air conditioner is used for a long time, wherein dust on a fan of the indoor unit and in the air channel can be blown into a room, the indoor air quality is reduced, the air conditioner is very bad for the health of a user, the rotating speed of the fan can be influenced by the dust accumulated on the fan of the outdoor unit, the fan can be blocked and stopped in a severe condition, the normal operation of the air conditioner is influenced, and therefore the fan and the air channel of the air conditioner need to be cleaned regularly. The existing methods for cleaning the fan and the air duct mainly comprise two methods, one method is to disassemble the fan from the air conditioner and manually clean the fan by manpower, the operation of the process is complicated, a machine needs to be disassembled, time and labor are wasted, and the air conditioner is easily damaged; the other method is to use a special cleaning tool to stretch into the air conditioner to clean the fan and the air duct, and the method has high cost, long time consumption in the cleaning process and incomplete cleaning.
Accordingly, there is a need in the art for a new air conditioner to solve the above problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problems of high cost and inconvenience of dust removal of fans and air ducts of an indoor unit of an air conditioner, a first aspect of the present invention provides a method for controlling self-cleaning of fans and air ducts of an air conditioner, where the air conditioner includes an indoor unit, the indoor unit includes a first air duct, a first fan, and an evaporator, the evaporator and the first fan are located in the first air duct, and the method for controlling self-cleaning of fans and air ducts includes:
starting a refrigeration mode and controlling the first fan to operate at a first rotating speed for a first set time period so as to form a first water film on the surface of the evaporator;
controlling the first fan to reversely rotate at a second rotating speed and then rotate at a third rotating speed, and circularly executing the step at least once to enable the total operating time of the first fan to be a second set time so as to enable dust attached to the first fan and the first air channel to be thrown out and attached to the first water film;
controlling the first fan to operate at a fourth speed for a third set period of time to enable the surface of the evaporator to form flowing condensate and to discharge the dust by means of the flowing condensate;
wherein the second rotational speed is greater than the first rotational speed, the third rotational speed, and the fourth rotational speed.
In a preferred technical solution of the above-mentioned self-cleaning control method for the fan and the air duct of the air conditioner, at least two of the first rotational speed, the third rotational speed and the fourth rotational speed are the same; and/or
The third set duration is greater than the first set duration.
In a preferred technical solution of the above method for controlling self-cleaning of a fan and an air duct of an air conditioner, the step of controlling the first fan to operate at a first rotation speed specifically includes: controlling the first fan to operate in a forward direction or a reverse direction at a first rotating speed; and/or
The step of controlling the first fan to operate at a fourth rotational speed specifically includes: and controlling the first fan to operate in a forward direction or a reverse direction at a fourth rotating speed.
In a preferred technical solution of the above method for controlling self-cleaning of a fan and an air duct of an air conditioner, the air conditioner further includes an outdoor unit, the outdoor unit includes a second air duct, a second fan and a first condenser, the second fan and the first condenser are disposed in the second air duct, and the method further includes:
switching the refrigeration mode into a heating mode and controlling the second fan to operate at a fifth rotating speed for a fourth set time period so as to form a second water film on the surface of the first condenser;
controlling the second fan to reversely rotate at a sixth rotating speed, then rotate at a seventh rotating speed, and circularly executing the step at least once to enable the total operating time of the second fan to be a fifth set time so as to enable dust attached to the second fan and the second air channel to be thrown out and attached to the second water film;
controlling the second fan to operate at an eighth rotation speed for a sixth set time period to enable the surface of the first condenser to form flowing condensed water and to discharge dust by means of the flowing condensed water;
wherein the sixth rotational speed is greater than the fifth rotational speed, the seventh rotational speed, and the eighth rotational speed.
In a preferred technical solution of the above method for controlling self-cleaning of a fan and an air duct of an air conditioner, at least two of the fifth rotational speed, the seventh rotational speed, and the eighth rotational speed are the same; and/or
The sixth set time period is greater than the fourth set time period.
In a preferred technical solution of the above method for controlling self-cleaning of a fan and an air duct of an air conditioner, the step of controlling the second fan to operate at a fifth rotation speed specifically includes: controlling the second fan to rotate forwards or reversely at a fifth rotating speed; and/or
The step of controlling the second fan to operate at an eighth rotational speed specifically includes: and controlling the second fan to operate in a forward direction or a reverse direction at an eighth rotating speed.
In a preferred technical solution of the above method for controlling self-cleaning of a fan and an air duct of an air conditioner, the air conditioner further includes an outdoor unit, the outdoor unit includes a third air duct, a third fan and a second condenser, and the second condenser and the third fan are located in the third air duct, and the method for controlling self-cleaning of the fan and the air duct further includes:
switching the refrigeration mode into a heating mode and controlling the third fan to operate at a ninth rotating speed for a seventh set time period so as to form a third water film on the surface of the second condenser;
controlling the third fan to reversely rotate at a tenth rotating speed for an eighth set time period so that dust attached to the third fan and the third air channel can be thrown out and attached to the third water film;
controlling the third fan to operate at an eleventh rotation speed for a ninth set time period to enable a surface of the second condenser to form flowing condensed water and to discharge the dust by means of the flowing condensed water;
wherein the tenth rotational speed is greater than the ninth rotational speed and the eleventh rotational speed.
In a preferred technical solution of the above method for controlling self-cleaning of a fan and an air duct of an air conditioner, the ninth rotational speed and the eleventh rotational speed are the same; and/or
The ninth set time period is greater than the seventh set time period.
In a preferred technical solution of the above method for controlling self-cleaning of a fan and an air duct of an air conditioner, the step of controlling the third fan to operate at a ninth rotation speed specifically includes: controlling the third fan to rotate forwards or reversely at a ninth rotating speed; and/or
The step of controlling the third fan to operate at an eleventh rotation speed specifically includes: and controlling the third fan to operate in a forward direction or a reverse direction at an eleventh rotating speed.
The self-cleaning control method of the fan and the air duct of the indoor unit of the air conditioner skillfully controls the switching time of the positive rotation and the negative rotation of the fan and controls the high-low speed switching time and the high-low speed running speed of the fan in a matching way, so that the air conditioner can form a water film with enough adsorption force on the surface of an evaporator in the first self-cleaning stage; in the second stage of self-cleaning, the fan is controlled to perform high-low speed staggered operation, so that the water film can be continuously humidified and strengthened in the process of collecting dust, the adsorption force of the water film on the dust is improved, and more dust can be adsorbed by the water film; at the third stage of automatically cleaning, through control fan low-speed operation, make the evaporimeter surface produce the comdenstion water that is enough to flow, at the comdenstion water along the in-process that evaporimeter surface flows, can take away absorbent dust in the lump, the flow process of comdenstion water forms the scouring action to the evaporimeter surface, thereby make the dust along with comdenstion water discharge indoor set, the degree of depth of dust is clean in realization indoor set fan and the wind channel, this deashing process need not to carry out dismouting machine work, also need not to dispose dedicated burnisher, manpower and materials are saved, can reduce the cost of deashing work by a wide margin, simplify the deashing process, the deashing is efficient, and then can promote user experience by a wide margin.
Further, by setting at least two of the first rotational speed, the third rotational speed, and the fourth rotational speed to be the same, the control strategy can be simplified, making the control process simpler.
Further, by setting the third set time period to be longer than the first set time period, it is ensured that a sufficient amount of condensed water can be generated to flush out the dust adsorbed on the evaporator.
Furthermore, after the refrigeration mode is converted into the heating mode, the operation of the fan of the outdoor unit is controlled according to the same control logic as that of the fan of the indoor unit under the refrigeration mode, so that the deep automatic cleaning of the fans in the indoor unit and the outdoor unit and dust in an air duct can be realized.
Further, by setting at least two of the fifth rotational speed, the seventh rotational speed, and the eighth rotational speed to be the same, the control strategy can be simplified, making the control process simpler.
Further, by setting the sixth set time period to be longer than the fourth set time period, it is ensured that a sufficient amount of condensed water can be produced to flush out dust adsorbed on the condenser.
Furthermore, after the refrigeration mode is converted into the heating mode, the operation of the fan of the outdoor unit is controlled according to the control logic similar to that of the fan of the indoor unit under the refrigeration mode, so that the automatic cleaning of the fans in the indoor unit and the outdoor unit and dust in an air duct can be realized.
The second aspect of the present invention also provides an air conditioner, which includes a controller configured to perform the self-cleaning control method of the fan and the air duct according to any one of the above technical solutions.
In the air conditioner provided by the invention, the configured controller can execute the self-cleaning control method of the fan and the air duct according to any one of the above technical schemes, so that all technical effects of the above technical schemes are achieved, and further description is omitted here.
Drawings
The self-cleaning control method of the fan and the air duct of the air conditioner of the present invention is described below with reference to the accompanying drawings, in which:
fig. 1 is a self-cleaning control method for a fan and an air duct according to embodiment 1 of the present invention;
fig. 2 is a self-cleaning control method for a fan and an air duct according to embodiment 2 of the present invention;
fig. 3 is a self-cleaning control method for a fan and an air duct according to embodiment 3 of the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the embodiments described below are explained in connection with a split wall-mounted air conditioner, this is not intended to be limiting, and the present invention is equally applicable to a split cabinet air conditioner, etc., without departing from the spirit and scope of the present invention.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In some instances, the cooling and heating principles of an air conditioner, which are well known to those skilled in the art, are not described in detail in order to not unnecessarily obscure the present invention. Furthermore, in the description of the present invention, the terms "first," "second," … …, "eleventh," are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Based on the problems of high cost and inconvenience in dust removal of fans and air channels of indoor units of air conditioners pointed out by the background art, the invention provides an air conditioner and a self-cleaning control method of the fans and the air channels of the air conditioner, and aims to realize the dust removal process of the fans and the air channels in the air conditioner at low cost and high efficiency, so that a user does not need to carry out machine disassembly and assembly operation or configure a special dust removal tool, convenience is provided for the user, and the use cost is saved for the user.
The air conditioner in the embodiment of the invention is a split wall-mounted air conditioner, and comprises an indoor unit and an outdoor unit, wherein the indoor unit is provided with an evaporator, a fan and an air duct, the evaporator and the fan are arranged in the air duct, and air is blown to the fan from the evaporator when the fan rotates forwards and then blown out to the indoor from an air outlet of the indoor unit; when the fan rotates reversely, the wind direction is reversed, and the wind blows to the evaporator from the fan and blows out to the indoor from the air inlet of the indoor unit. The outdoor unit is provided with a condenser, a fan and an air channel, wherein the condenser and the fan are arranged in the air channel, air is blown to the fan from the condenser when the fan rotates forwards and is blown to the outside from an air outlet of the outdoor unit, and air is blown to the condenser from the fan and is blown to the outside from an air inlet of the outdoor unit when the fan rotates backwards and is reversely rotated. For convenience of distinction and description, in the following embodiments, the duct and the fan of the indoor unit are referred to as a first duct and a first fan, respectively. For the outdoor unit, since two methods for controlling the self-cleaning of the fans and the air channels of the outdoor unit are specifically given, for the purpose of distinction, the air channels and the fans are respectively called as a second air channel and a second fan in the first embodiment of the self-cleaning of the outdoor unit, and are respectively called as a third air channel and a third fan in the second embodiment. It is to be understood that the above distinction is for descriptive purposes only and is not to be construed as indicating or implying a relative importance.
Example 1
In this embodiment, an automatic dust cleaning process of a fan and an air duct of an indoor unit is implemented. Referring to fig. 1, the self-cleaning control method for the fan and the air duct of the air conditioner in the embodiment includes:
and S10, starting a refrigeration mode and controlling the first fan to run at the first rotating speed for a first set time period so as to form a first water film on the surface of the evaporator.
Specifically, this step may be referred to as a first stage of the self-cleaning process, i.e., a stage in which the indoor unit forms an adsorbed water film. In this step, the air conditioner is in a cooling mode, and in the process of controlling the first fan to operate at the first rotation speed for a first set time period, the first set time period and the first rotation speed are related to each other, and when the first rotation speed is relatively large, the first set time period is relatively short, and when the first rotation speed is relatively small, the first set time period is relatively long, so that the surface of the evaporator can form the first water film. The first water film is composed of tiny water drops attached to the surfaces of the evaporator fins, and in a first set time, condensed water formed on the surfaces of the evaporator fins can cover most parts of the surfaces of the evaporator fins and cannot gather to flow, and only the surfaces of the evaporator fins are kept in a wet state, so that dust can be adhered to the water film when wind with dust blows to the surfaces of the fins. The process of controlling the first fan to operate at the first rotation speed may be controlling the first fan to operate at the first rotation speed in a forward direction, or controlling the first fan to operate at the first rotation speed in a reverse direction, preferably in the forward direction.
And S11, controlling the first fan to reversely rotate at the second rotation speed, then rotate at the third rotation speed, and circularly executing the step at least once to enable the total operation time length to be a second set time length, so that the dust attached to the first fan and the first air channel can be thrown out and attached to the first water film.
In particular, this step may be referred to as the second stage of the self-cleaning process, i.e. the indoor unit dust separation and enrichment stage. In this step, firstly, the first fan needs to be controlled to operate reversely to change the wind direction in the wind channel, and secondly, the first fan needs to be controlled to operate at a high speed, that is, to operate reversely at a second rotation speed, and the control process may be performed synchronously. The second rotational speed is greater than the first rotational speed. The magnitude of the second rotation speed is obtained through experiments, so that enough centrifugal force can be generated to enable dust on the fan and in the air duct to fall off. The third rotational speed may be the same as or different from the first rotational speed. In this embodiment, the first fan is first reversely operated at the second rotation speed for a certain period of time, and then operated at the third rotation speed, and the process is cyclically executed, that is, after the first fan is operated at the third rotation speed, the first fan is again operated at the second rotation speed. The second rotating speed is also larger than the third rotating speed, the fan can rotate forwards or backwards when rotating at the third rotating speed, the thickness of the first water film is increased to enhance the dust adhesion capability of the fan, the adhesion force of the surface of the first water film is reduced after certain dust is adhered, and at the moment, the first water film with the dust can be further humidified by adjusting the high-speed reverse rotation to the low-speed rotation. Therefore, the second rotating speed and the third rotating speed are circularly executed, the dust in the fan and the air duct can be gradually adhered to the surface of the evaporator, the deep cleaning of the dust is realized, and the phenomenon of incomplete dust removal caused by the reduction of the adhering capacity of the first water film is avoided. The total time of the circulating operation can be set as a second set time to completely adsorb all dust in the fan and the air duct, and the total time can be determined through experiments.
And S12, controlling the first fan to operate at the fourth rotating speed for a third set time period so that flowing condensed water can be formed on the surface of the evaporator and dust can be discharged by the flowing condensed water.
In particular, this step may be referred to as the third phase of the self-cleaning process, i.e. the indoor unit dust discharge phase. In this process, the fan is operated at a fourth rotational speed, which is less than the second rotational speed, and relatively speaking, the fourth rotational speed is a low speed, and the second rotational speed is a high speed. The fourth rotation speed may be the same as the first rotation speed, may be different from the first rotation speed, may be the same as the third rotation speed, or may be different from the third rotation speed, and is set to be the same as the first rotation speed for the sake of simplifying the control. The controlling of the first fan to operate at the fourth rotation speed may be controlling the first fan to operate at the fourth rotation speed in a forward direction, or may be controlling the first fan to operate at the fourth rotation speed in a reverse direction, and preferably, the first fan operates in the forward direction. The purpose of controlling the first fan to turn from the high speed to the low speed is to normally operate the indoor unit for a certain time to generate a sufficient amount of condensed water on the surface of the evaporator after most of the dust is adhered to the evaporator, and the time used for the process is usually longer than the time used for generating the first water film, i.e. the third set time is longer than the first set time. Along with the gradual increase of the condensed water, the tiny water drops on the first water film begin to gather to form a plurality of big water drops, the water drops gradually gather under the action of the self weight of the first water film to form water flow, and the dust wrapped by the flowing condensed water is discharged out of the indoor unit along a drain pipe of the indoor unit, so that the deep automatic cleaning of the dust in a fan and an air duct of the indoor unit is realized.
In other embodiments, at least two of the first, third and fourth rotational speeds may be the same for simplicity of control, but may of course be different. Further, the second rotation speed is relatively high, and the first rotation speed, the third rotation speed, and the fourth rotation speed are low, so that the second rotation speed is greater than the first rotation speed, the third rotation speed, and the fourth rotation speed.
The self-cleaning control method of the fan and the air duct of the indoor unit of the air conditioner skillfully controls the switching time of the positive rotation and the negative rotation of the fan and controls the high-low speed switching time and the high-low speed running speed of the fan in a matching way, so that the air conditioner can form a water film with enough adsorption force on the surface of an evaporator in the first self-cleaning stage; in the second stage of self-cleaning, the fan is controlled to perform high-low speed staggered operation, so that the water film can be continuously humidified and strengthened in the process of collecting dust, the adsorption force of the water film on the dust is improved, and more dust can be adsorbed by the water film; at the third stage of automatically cleaning, through control fan low-speed operation, make the evaporimeter surface produce the comdenstion water that is enough to flow, at the comdenstion water along the in-process that evaporimeter surface flows, can take away absorbent dust in the lump, the flow process of comdenstion water forms the scouring action to the evaporimeter surface, thereby make the dust along with comdenstion water discharge indoor set, the degree of depth of dust is clean in realization indoor set fan and the wind channel, this deashing process need not to carry out dismouting machine work, also need not to dispose dedicated burnisher, manpower and materials are saved, can reduce the cost of deashing work by a wide margin, simplify the deashing process, the deashing is efficient, and then can promote user experience by a wide margin.
Example 2
For the split type air conditioner, the fans and air ducts in the indoor unit and the outdoor unit are deposited with dust, so that the user needs to clean the outdoor unit at regular intervals in addition to the indoor unit at regular intervals. In order to facilitate users and save the trouble of cleaning the air conditioner for users, the embodiment provides the air conditioner and the self-cleaning control method thereof, wherein the air conditioner can clean the indoor unit fan and the air duct as well as the outdoor unit fan and the air duct. In this embodiment, the outdoor unit includes a second air duct, a second fan, and a first condenser. The embodiment is the same as the embodiment 1 in that the self-cleaning process of the indoor unit is completely the same, namely after the air conditioner starts a cooling mode, three self-cleaning stages in S10-S12 are executed to realize deep self-cleaning of the fan and the air duct of the indoor unit. The difference between the present embodiment and embodiment 1 is that, referring to fig. 2, the self-cleaning control method in the present embodiment further includes:
and S20, switching the cooling mode to the heating mode and controlling the second fan to operate at the fifth rotating speed for a fourth set time period so as to form a second water film on the surface of the first condenser.
Specifically, after the self-cleaning of the fan and the air duct of the indoor unit is realized in the cooling mode, the air conditioner is controlled to switch the cooling mode to the heating mode, and the self-cleaning of the fan and the air duct of the outdoor unit is started. In this embodiment, this step may be referred to as a fourth stage of the self-cleaning process, i.e., a stage of forming an adsorbed water film by the outdoor unit. In this step, the air conditioner is in a heating mode, and the fourth set time period and the fifth rotation speed are related to each other in the process of controlling the second fan to operate at the fifth rotation speed for a fourth set time period, and when the fifth rotation speed is relatively large, the fourth set time period is relatively short, and when the fifth rotation speed is relatively small, the fourth set time period is relatively long, so that the second water film can be formed on the surface of the first condenser. Further, since the outdoor unit is installed outdoors, the ambient humidity, the wind speed, and the like are different from those of the indoor unit, and the fourth set time period is usually longer than the first set time period, so as to reduce the possibility that the outdoor wind blows and the dry environment accelerate the evaporation of the water film on the surface of the first condenser. The second water film is composed of tiny water drops attached to the surfaces of the first condenser fins, condensed water formed on the surfaces of the first condenser fins can cover most parts of the surfaces of the first condenser fins within a fourth set time period, and cannot gather and flow, and the surfaces of the first condenser fins are only kept in a wet state, so that dust can be adhered to the water films when wind with dust blows to the surfaces of the fins. The process of controlling the second fan to operate at the fifth rotation speed may be controlling the second fan to operate at the fifth rotation speed in a forward direction, or controlling the second fan to operate at the fifth rotation speed in a reverse direction, preferably in the forward direction.
And S21, controlling the second fan to rotate in the sixth rotating speed in the reverse direction, then rotate in the seventh rotating speed, and circularly executing the step at least once to enable the total operation time length to be a fifth set time length, so that the dust attached to the second fan and the second air channel can be thrown out and attached to the second water film.
Specifically, this step may be referred to as a fifth stage of the self-cleaning process, i.e., an outdoor unit dust separating and enriching stage. In this step, firstly, the second fan needs to be controlled to operate reversely to change the wind direction in the wind channel, and secondly, the second fan needs to be controlled to operate at a high speed, i.e. at a sixth rotation speed, and the control process can be performed synchronously. The sixth rotational speed is greater than the fifth rotational speed. The magnitude of the sixth rotation speed is obtained through experiments, and the standard is that enough centrifugal force can be generated to enable dust on the fan and in the air duct to fall off. In this embodiment, the second fan is first operated at the sixth speed for a certain period of time in the reverse direction, and then operated at the seventh speed, and the process is executed cyclically, that is, after the seventh speed is operated, the operation is changed to the sixth speed again. The sixth rotating speed is also greater than the seventh rotating speed, the seventh rotating speed can be positive rotation or reverse rotation, the thickness of the second water film is increased to enhance the dust adhesion capacity, after certain dust adheres, the adhesion force of the surface of the second water film is reduced, and at the moment, the second water film with the dust can be further humidified by adjusting the high-speed reverse rotation to the low-speed rotation. Therefore, the sixth rotating speed and the seventh rotating speed are circularly executed, the dust in the fan and the air duct can be gradually adhered to the surface of the first condenser, the deep cleaning of the dust is realized, and the phenomenon of incomplete dust removal caused by the reduction of the adhesion capacity of the second water film is avoided. The total time of the circulating operation can be set as a fifth set time to completely adsorb all dust in the fan and the air duct, and the total time can be determined through experiments.
And S22, controlling the second fan to operate at the eighth rotating speed for a sixth set time period so that flowing condensed water can be formed on the surface of the first condenser and dust can be discharged by the flowing condensed water.
Specifically, this step may be referred to as a sixth stage of the self-cleaning process, i.e., an outdoor unit dust discharging stage. In this process, the fan is operated at an eighth rotational speed, which is less than the sixth rotational speed, and relatively speaking, the eighth rotational speed is a low speed, and the sixth rotational speed is a high speed. The eighth rotation speed may be the same as the fifth rotation speed, may be different from the fifth rotation speed, may be the same as the seventh rotation speed, or may be different from the seventh rotation speed. To simplify the control, the eighth rotation speed is set to be the same as the fifth rotation speed and the seventh rotation speed. The controlling of the second fan to operate at the eighth rotation speed may be controlling of the second fan to operate at the eighth rotation speed in a forward direction or in a reverse direction. The second fan is controlled to be operated at a high speed and a low speed so as to operate the outdoor unit fan at a low speed for a sixth set time period to generate a sufficient amount of condensed water on the surface of the first condenser after most of the dust is adhered to the first condenser, and the sixth set time period is controlled to be longer than the fourth set time period so as to generate a sufficient amount of condensed water on the surface of the first condenser during the operation. Along with the gradual increase of the condensed water, the second water film begins to gather into a plurality of water drops, the water drops are gradually gathered under the action of the self weight of the water drops to form water flow, and the dust wrapped by the flowing condensed water is discharged out of the outdoor unit along a drain pipe of the outdoor unit, so that the deep automatic cleaning of the dust in a fan and an air duct of the outdoor unit is realized. Therefore, the deep self-cleaning of the fans and the air channels of the indoor unit and the outdoor unit is realized.
In other embodiments, at least two of the fifth, seventh and eighth rotational speeds may be the same for simplifying the control, but may be different from each other. Further, the sixth rotation speed is relatively high, and the fifth rotation speed, the seventh rotation speed, and the eighth rotation speed are low, so the sixth rotation speed is greater than the fifth rotation speed, the seventh rotation speed, and the eighth rotation speed.
In the self-cleaning control method for the fan and the air duct in the embodiment, after the refrigeration mode is converted into the heating mode, the operation of the fan of the outdoor unit is controlled according to the same control logic for controlling the fan of the indoor unit in the refrigeration mode, so that the deep automatic cleaning of dust in the fan and the air duct in the indoor unit, the outdoor unit and the air duct can be realized.
Example 3
The present embodiment is similar to embodiment 2, and can realize self-cleaning of the outdoor unit of the air conditioner, the fan of the indoor unit and the air duct, and the same point of the present embodiment as embodiment 2 lies in the self-cleaning process of the indoor unit, that is, the same as the example of embodiment 1, and specifically, reference may be made to embodiment 1. The present embodiment is different from embodiment 2 in the self-cleaning process of the fan and the duct of the outdoor unit. In this embodiment, the outdoor unit includes a third air duct, a third fan, and a second condenser.
Referring to fig. 3, the method for controlling self-cleaning of the fan and the air duct in the present embodiment includes, in addition to the method of embodiment 1, the following steps:
and S30, switching the cooling mode to the heating mode and controlling the third fan to operate at the ninth rotating speed for a seventh set time period so as to form a third water film on the surface of the second condenser.
Specifically, this step may be referred to as a fourth stage of the self-cleaning process, i.e., a stage of forming an adsorbed water film by the outdoor unit. In this step, the air conditioner is in the heating mode, and in the process of controlling the third fan to operate at the ninth rotation speed for the seventh set time period, the seventh set time period and the ninth rotation speed are related to each other, and when the ninth rotation speed is relatively large, the seventh set time period is relatively short, and when the ninth rotation speed is relatively small, the seventh set time period is relatively long, so that the third water film can be formed on the surface of the second condenser. The third water film is composed of tiny water drops attached to the surfaces of the second condenser fins, condensed water formed on the surfaces of the second condenser fins can cover most parts of the surfaces of the second condenser fins and cannot be gathered and flow within a seventh set time, and the surfaces of the second condenser fins are only kept in a wet state, so that dust can be attached to the water films when wind with dust blows to the surfaces of the fins. The process of controlling the third fan to operate at the ninth rotation speed may be controlling the third fan to operate at the ninth rotation speed in a forward direction, or controlling the third fan to operate at the ninth rotation speed in a reverse direction, preferably in the forward direction.
And S31, controlling the third fan to reversely rotate at the tenth rotating speed for an eighth set time period, so that dust attached to the third fan and the third air channel can be thrown out and attached to the third water film.
Specifically, this step may be referred to as a fifth stage of the self-cleaning process, i.e., an outdoor unit dust separating and enriching stage. In this step, firstly, the third fan needs to be controlled to operate reversely to change the wind direction in the wind channel, and secondly, the third fan needs to be controlled to operate at a high speed, i.e. at the tenth rotation speed, although the control process may be performed synchronously. The tenth rotation speed is greater than the ninth rotation speed, and the tenth rotation speed is relatively high-speed operation and the ninth rotation speed is low-speed operation. The magnitude of the tenth rotational speed is obtained through experiments, so that sufficient centrifugal force can be generated to enable dust on the fan and in the air duct to fall off, the eighth set time period and the tenth rotational speed are related to each other, the eighth set time period for throwing off dust when the tenth rotational speed is relatively high is relatively reduced, and the second set time period for throwing off dust when the tenth rotational speed is relatively low is relatively increased. After the rotation for the eighth set time period, most of dust on the fan blades and in the air duct adheres to the third water film, and the process is the process of separating and enriching dust of the outdoor unit.
And S32, controlling the third fan to operate at the eleventh rotating speed for a ninth set time period so that flowing condensed water can be formed on the surface of the second condenser and the dust is discharged by the flowing condensed water.
Specifically, this step may be referred to as a third stage of the self-cleaning process, i.e., an outdoor unit dust discharging stage. In this process, the fan is operated at an eleventh rotational speed, which is less than the tenth rotational speed, and relatively speaking, the eleventh rotational speed is a low speed and the tenth rotational speed is a high speed. The eleventh rotation speed may be the same as or different from the ninth rotation speed, and is set to be the same as the ninth rotation speed for the sake of simplifying the control. The third fan may be controlled to operate at the eleventh rotation speed by operating the third fan at the eleventh rotation speed in a forward direction or in a reverse direction. The purpose of controlling the third fan to rotate from high speed to low speed is to enable the outdoor unit to normally operate for a certain time after most dust is adhered to the second condenser so as to enable the surface of the second condenser to generate sufficient condensed water, along with the gradual increase of the condensed water, the third water film starts to gather into a plurality of water drops, the water drops gradually gather under the action of self weight of the third water film to form water flow, the dust wrapped by the flowing condensed water is discharged out of the outdoor unit along a drain pipe of the outdoor unit, and the automatic cleaning of the dust in the fan and an air duct is realized. Further, the ninth set time period is set to be greater than the seventh set time period in order to enable the second condenser surface to generate a sufficient amount of condensate to flush the second condenser surface.
With regard to the aforementioned respective set time periods and the respective rotational speeds of the fans, determination criteria have been described in detail in the embodiments, such as whether a water film can be generated, whether flowing condensate water can be generated, and the like, can be determined experimentally. The formation of the water film can be measured by a humidity sensor, a surface pressure sensor, or the like, or other experimental test means, and the same principle can be applied to the measurement of the condensed water.
The present invention also provides an air conditioner equipped with a controller capable of executing the above-described control method, for example, the controller including a time relay, a counter, and the like.
In the present invention, operation means forward operation unless otherwise stated.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A self-cleaning control method for fan and air channel of air conditioner includes an indoor unit including a first air channel, a first fan and an evaporator, said evaporator and said first fan being located in said first air channel,
the self-cleaning control method of the fan and the air channel is characterized by comprising the following steps:
starting a refrigeration mode and controlling the first fan to operate at a first rotating speed for a first set time period so as to form a first water film on the surface of the evaporator;
controlling the first fan to reversely rotate at a second rotating speed and then rotate at a third rotating speed, and circularly executing the step at least once to enable the total operating time of the first fan to be a second set time so as to enable dust attached to the first fan and the first air channel to be thrown out and attached to the first water film;
controlling the first fan to operate at a fourth speed for a third set period of time to enable the surface of the evaporator to form flowing condensate and to discharge the dust by means of the flowing condensate;
wherein the second rotational speed is greater than the first rotational speed, the third rotational speed, and the fourth rotational speed.
2. The self-cleaning control method of a fan and a duct of an air conditioner according to claim 1, wherein at least two of the first rotational speed, the third rotational speed, and the fourth rotational speed are the same; and/or
The third set duration is greater than the first set duration.
3. The method as claimed in claim 1, wherein the step of controlling the first fan to operate at a first speed comprises: controlling the first fan to operate in a forward direction or a reverse direction at a first rotating speed; and/or
The step of controlling the first fan to operate at a fourth rotational speed specifically includes: and controlling the first fan to operate in a forward direction or a reverse direction at a fourth rotating speed.
4. The self-cleaning control method of a fan and a duct of an air conditioner according to any one of claims 1 to 3, wherein the air conditioner further comprises an outdoor unit including a second duct, a second fan, and a first condenser, the second fan and the first condenser being provided in the second duct, the self-cleaning control method further comprising:
switching the refrigeration mode into a heating mode and controlling the second fan to operate at a fifth rotating speed for a fourth set time period so as to form a second water film on the surface of the first condenser;
controlling the second fan to reversely rotate at a sixth rotating speed, then rotate at a seventh rotating speed, and circularly executing the step at least once to enable the total operating time of the second fan to be a fifth set time so as to enable dust attached to the second fan and the second air channel to be thrown out and attached to the second water film;
controlling the second fan to operate at an eighth rotation speed for a sixth set time period to enable the surface of the first condenser to form flowing condensed water and to discharge dust by means of the flowing condensed water;
wherein the sixth rotational speed is greater than the fifth rotational speed, the seventh rotational speed, and the eighth rotational speed.
5. The self-cleaning control method of a fan and a duct of an air conditioner according to claim 4, wherein at least two of the fifth rotation speed, the seventh rotation speed and the eighth rotation speed are the same; and/or
The sixth set time period is greater than the fourth set time period.
6. The method as claimed in claim 5, wherein the step of controlling the second fan to operate at a fifth speed comprises: controlling the second fan to rotate forwards or reversely at a fifth rotating speed; and/or
The step of controlling the second fan to operate at an eighth rotational speed specifically includes: and controlling the second fan to operate in a forward direction or a reverse direction at an eighth rotating speed.
7. The method of controlling self-cleaning of a fan and a duct of an air conditioner according to any one of claims 1 to 3, wherein the air conditioner further comprises an outdoor unit including a third duct, a third fan, and a second condenser, the second condenser and the third fan being located in the third duct, the method of controlling self-cleaning of the fan and the duct further comprising:
switching the refrigeration mode into a heating mode and controlling the third fan to operate at a ninth rotating speed for a seventh set time period so as to form a third water film on the surface of the second condenser;
controlling the third fan to reversely rotate at a tenth rotating speed for an eighth set time period so that dust attached to the third fan and the third air channel can be thrown out and attached to the third water film;
controlling the third fan to operate at an eleventh rotation speed for a ninth set time period to enable a surface of the second condenser to form flowing condensed water and to discharge the dust by means of the flowing condensed water;
wherein the tenth rotational speed is greater than the ninth rotational speed and the eleventh rotational speed.
8. The self-cleaning control method of a fan and a duct of an air conditioner according to claim 7, wherein the ninth rotation speed and the eleventh rotation speed are the same; and/or
The ninth set time period is greater than the seventh set time period.
9. The method as claimed in claim 8, wherein the step of controlling the third fan to operate at a ninth speed comprises: controlling the third fan to rotate forwards or reversely at a ninth rotating speed; and/or
The step of controlling the third fan to operate at an eleventh rotation speed specifically includes: and controlling the third fan to operate in a forward direction or a reverse direction at an eleventh rotating speed.
10. An air conditioner comprising a controller, wherein the controller is configured to perform the method of self-cleaning control of a fan and a duct of any of claims 1-9.
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