CN110986248B - Air conditioner and self-cleaning control method of fan and air duct thereof - Google Patents
Air conditioner and self-cleaning control method of fan and air duct thereof Download PDFInfo
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- CN110986248B CN110986248B CN201911078153.7A CN201911078153A CN110986248B CN 110986248 B CN110986248 B CN 110986248B CN 201911078153 A CN201911078153 A CN 201911078153A CN 110986248 B CN110986248 B CN 110986248B
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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
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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
- F24F11/74—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
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 duct thereof, aiming at solving the problems of high dust cleaning cost and inconvenience of the fan and the air duct of the existing air conditioner, wherein the control method comprises the following steps: controlling the fan to rotate at a first rotating speed for a first set time period so as to form a water film on the surface of the heat exchanger; controlling the fan to reversely rotate at a second rotating speed, then rotating 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 a water film; and controlling the 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 heat exchanger to discharge the dust by the flowing condensed water. The control method provided by the invention can realize deep self-cleaning of dust in the fans and air ducts of the indoor unit and the outdoor unit, does not need to assemble and disassemble the machine, does not need to configure 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 and a self-cleaning control method of a fan and 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 in cleaning dust of the fan and the air duct of the existing air conditioner, a first aspect of the present invention provides a fan of an air conditioner and a self-cleaning control method of an air duct, where the air conditioner includes an air duct, a fan and a heat exchanger, the heat exchanger and the fan are located in the air duct, and the self-cleaning control method of the fan and the air duct includes:
controlling the fan to run at a first rotating speed for a first set time period so as to form a water film on the surface of the heat exchanger;
controlling the 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 the total operating time of the fan to be a second set time so as to enable dust attached to the fan and the air channel to be thrown out and attached to the water film;
controlling the fan to operate at a fourth rotating speed for a third set time period to enable the surface of the heat exchanger to form flowing condensed water so as to discharge dust by means of the flowing condensed water;
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 the preferable technical scheme of the self-cleaning control method for the fan and the air duct of the air conditioner, the air conditioner comprises an indoor unit, and the air duct, the fan and the heat exchanger are respectively an indoor unit air duct, an indoor unit fan and an evaporator; and/or
The air conditioner comprises an outdoor unit, and the air duct, the fan and the heat exchanger are respectively an outdoor unit air duct, an outdoor unit fan and a condenser.
In the preferred technical scheme of the self-cleaning control method for the fan and the air duct of the air conditioner, when the air duct, the fan and the heat exchanger are respectively an indoor unit air duct, an indoor unit fan and an evaporator, the self-cleaning control method for the fan and the air duct operates in a refrigeration mode; and/or
When the air duct, the fan and the heat exchanger are respectively an outdoor unit air duct, an outdoor unit fan and a condenser, the self-cleaning control method of the fan and the air duct operates in a heating mode.
In the preferable technical scheme of the self-cleaning control method of the fan and the air duct of the air conditioner, the fan of the indoor unit is a cross-flow fan; and/or
The outdoor fan is an axial fan.
The self-cleaning control method of the fan and the air duct of the air conditioner provided by the invention skillfully controls the switching time of the positive and negative rotation of the fan, and controls the high and low speed switching time and the high and 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 the heat exchanger 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; in the third stage of automatically cleaning, through control fan low-speed operation, make the heat exchanger surface produce the comdenstion water that is enough to flow, at the comdenstion water along the in-process that the heat exchanger surface flows, can take away absorbent dust in the lump, the flow process of comdenstion water forms the scouring action to the heat exchanger surface, thereby make the dust along with comdenstion water discharge indoor set and/or off-premises station, realize the degree of depth automatically cleaning of dust in indoor set and/or off-premises station fan and the wind channel, this deashing process need not to carry out dismouting machine work, also need not to dispose dedicated burnisher, save the manpower, 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.
The second aspect of the present invention provides another self-cleaning control method for a fan and an air duct of an air conditioner, the air conditioner includes an air duct, a fan and a heat exchanger, the heat exchanger and the fan are located in the air duct, and the self-cleaning control method for the fan and the air duct includes:
controlling the fan to run at a first rotating speed for a first set time period so as to form a water film on the surface of the heat exchanger;
controlling the fan to reversely rotate at a second rotating speed for a second set time period so that dust attached to the fan and the air channel can be thrown out and attached to the water film;
controlling the fan to operate at a third speed for a third set period of time to enable the surface of the heat exchanger to form flowing condensate water to drain dust by the flowing condensate water;
wherein the second rotational speed is greater than the first rotational speed and the third 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 first rotational speed and the third rotational speed are the same; and/or
The third set duration is greater than the first set duration.
In the preferable technical scheme of the self-cleaning control method for the fan and the air duct of the air conditioner, the air conditioner comprises an indoor unit, and the air duct, the fan and the heat exchanger are respectively an indoor unit air duct, an indoor unit fan and an evaporator; and/or
The air conditioner comprises an outdoor unit, and the air duct, the fan and the heat exchanger are respectively an outdoor unit air duct, an outdoor unit fan and a condenser.
In the preferred technical scheme of the self-cleaning control method for the fan and the air duct of the air conditioner, when the air duct, the fan and the heat exchanger are respectively an indoor unit air duct, an indoor unit fan and an evaporator, the self-cleaning control method for the fan and the air duct operates in a refrigeration mode; and/or
When the air duct, the fan and the heat exchanger are respectively an outdoor unit air duct, an outdoor unit fan and a condenser, the self-cleaning control method of the fan and the air duct operates in a heating mode.
The self-cleaning control method of the fan and the air duct of the air conditioner provided by the invention skillfully controls the switching time of the positive and negative rotation of the fan, and controls the high and low speed switching time and the high and 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 the heat exchanger in the first self-cleaning stage; controlling the fan to rotate reversely at a high speed in the second self-cleaning stage so as to change the wind direction in the air duct, blowing dust on the blades and in the air duct to the surface of the heat exchanger by utilizing the high-speed rotation of the fan blades and enabling the dust to be adhered to the water film, and collecting the dust on the fan blades and in the air duct; in the third stage of automatically cleaning, through control fan low-speed operation, make the heat exchanger surface produce the comdenstion water that is enough to flow, at the comdenstion water along the in-process that the heat exchanger surface flows, can take away absorbent dust in the lump, the flow process of comdenstion water forms the scouring action to the heat exchanger surface, thereby make the dust along with comdenstion water discharge indoor set or off-premises station, realize the self-cleaning of dust in indoor set and/or off-premises station fan and the wind channel, this deashing process need not to carry out dismouting machine work, also need not to dispose dedicated burnisher, save manpower and materials, can reduce the cost of deashing work by a wide margin, simplify the deashing process, convenience of customers uses, and then can promote user experience by a wide margin.
Further, the control process can be simplified and the control strategy can be optimized by setting the first rotating speed and the third rotating speed of the fan to be the same.
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 produced to flush out the dust adsorbed on the evaporator.
The third aspect of the present invention also provides an air conditioner comprising a controller configured to perform the method for controlling self-cleaning of a fan and a duct according to any one of the above aspects.
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.
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," "third," and "fourth" 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 the fan and the air duct of the existing air conditioner pointed out by the background art, the invention provides an air conditioner and a self-cleaning control method of the fan and the air duct of the air conditioner, aiming at realizing the dust removal process of the fan and the air duct in the air conditioner at low cost and high efficiency, so that a user does not need to carry out disassembly and assembly machine operation and 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 air duct and the fan of the indoor unit are respectively referred to as an indoor unit air duct and an indoor unit fan; the duct fans of the outdoor unit are referred to as an outdoor unit duct and an outdoor unit fan, respectively. Axial flow fans are generally used as outdoor fans, and cross flow fans are generally used as indoor fans.
Example 1
The embodiment realizes the automatic dust cleaning process of the fan and the air duct of the indoor unit. Referring to fig. 1, the method for controlling self-cleaning of a fan and an air duct of an air conditioner in this embodiment includes:
and S10, controlling the fan to run at the first rotating speed for a first set time period so as to form a water film on the surface of the heat exchanger.
Specifically, since the embodiment implements the self-cleaning process of the fan and the air duct of the indoor unit, the self-cleaning control method in the embodiment operates in the cooling mode of the air conditioner. 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 adsorption water film. The method comprises the steps of controlling an indoor unit fan to operate at a first rotating speed for a first set time period, wherein the first set time period and the first rotating speed are related to each other, when the first rotating speed is relatively large, the first set time period is relatively short, and when the first rotating speed is relatively small, the first set time period is relatively long, so that a water film can be formed on the surface of an evaporator. The 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 flow together, 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 indoor unit fan to operate at the first rotation speed may be controlling the indoor unit fan to operate in a forward direction at the first rotation speed, or controlling the indoor unit fan to operate in a reverse direction at the first rotation speed, preferably operating in the forward direction.
And S11, controlling the fan to rotate in the reverse direction at the second rotating speed and then at the third rotating speed, and circularly executing the step at least once to enable the total running time of the step to be a second set time so as to enable the dust attached to the fan and the air duct to be thrown out and attached to the 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 indoor unit fan needs to be controlled to operate reversely to change the wind direction in the wind channel, and secondly, the indoor unit fan needs to be controlled to operate at a high speed, that is, at a second rotation speed, and the control process can 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 indoor unit fan is first reversely rotated at the second rotation speed for a certain period of time, and then rotated at the third rotation speed, and the process is cyclically executed, that is, after the indoor unit fan is rotated at the third rotation speed, the indoor unit fan is again rotated at the second rotation speed. The second rotating speed is also larger than the third rotating speed, the fan can rotate in the positive direction or the reverse direction when rotating at the third rotating speed, the thickness of the water film is increased, so that the dust adhering capacity of the fan is enhanced, the adhesion force of the surface of the water film is reduced after certain dust is adhered, and at the moment, the water film with the dust adhered 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 cleaning caused by the reduction of the adhering capacity of the 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 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 heat exchanger to discharge the dust 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 indoor unit fan to operate at the fourth rotation speed may be controlling of the indoor unit fan to operate at the fourth rotation speed in a forward direction, or may be controlling of the indoor unit fan to operate at the fourth rotation speed in a reverse direction, and preferably, the indoor unit fan operates in the forward direction. The purpose of controlling the fan of the indoor unit to rotate 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 water film, namely the third set time is longer than the first set time. Along with the gradual increase of the condensed water, tiny water drops on the 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 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.
Alternatively, the self-cleaning process of the fan and the air duct in this embodiment can be applied to an outdoor unit, that is, the indoor unit fan in embodiment 1 can be replaced by an outdoor unit fan, and correspondingly, the indoor unit air duct is replaced by an outdoor unit air duct, and the evaporator is replaced by a condenser. It should be noted that if the dust cleaning process of the outdoor unit fan and the air duct is performed, the air conditioner needs to operate in the heating mode.
In addition, at least two of the first rotation speed, the third rotation speed, and the fourth rotation speed may be set to be the same, and may be different from each other, in order to simplify the control. 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 air conditioner provided by the invention skillfully controls the switching time of the positive and negative rotation of the fan, and controls the high and low speed switching time and the high and 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 the heat exchanger 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; in the third stage of automatically cleaning, through control fan low-speed operation, make the heat exchanger surface produce the comdenstion water that is enough to flow, at the comdenstion water along the in-process that the heat exchanger surface flows, can take away absorbent dust in the lump, the flow process of comdenstion water forms the scouring action to the heat exchanger surface, thereby make the dust along with comdenstion water discharge indoor set and/or off-premises station, realize the degree of depth automatically cleaning of dust in indoor set and/or off-premises station fan and the wind channel, this deashing process need not to carry out dismouting machine work, also need not to dispose dedicated burnisher, save the manpower, can reduce the cost of deashing work by a wide margin, simplify the deashing process, the deashing is efficient.
Example 2
In this embodiment, the self-cleaning process of the fan and the air duct of the indoor unit is still implemented as an example. Referring to fig. 2, the method for controlling self-cleaning of the fan and the air duct of the air conditioner in the present embodiment includes:
and S20, controlling the fan to run at the first rotating speed for a first set time period so as to form a water film on the surface of the heat exchanger.
Specifically, since the present embodiment also implements a self-cleaning process of the fan and the air duct of the indoor unit, the self-cleaning control method in the present embodiment needs to operate in a cooling mode of the air conditioner. 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 adsorption water film. The method comprises the steps of controlling an indoor unit fan to operate at a first rotating speed for a first set time period, wherein the first set time period and the first rotating speed are related to each other, when the first rotating speed is relatively large, the first set time period is relatively short, and when the first rotating speed is relatively small, the first set time period is relatively long, so that a water film can be formed on the surface of an evaporator. The 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 flow together, 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 indoor unit fan to operate at the first rotation speed may be controlling the indoor unit fan to operate in a forward direction at the first rotation speed, or controlling the indoor unit fan to operate in a reverse direction at the first rotation speed, preferably operating in the forward direction.
And S21, controlling the fan to reversely rotate at the second rotating speed for a second set time period, so that dust attached to the fan and the air duct can be thrown out and attached to the 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 indoor unit fan needs to be controlled to run reversely to change the wind direction in the wind channel, and secondly, the indoor unit fan needs to be controlled to run at a high speed, that is, at a second rotation speed, and the control process can be performed synchronously. The second rotation speed is greater than the first rotation speed, and the second rotation speed is relatively high-speed operation, and the first rotation speed is low-speed operation. 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 second set period of time and the second speed are related to each other, the second set period of time experienced by the dust being thrown off is relatively reduced when the second speed is relatively high, and the second set period of time taken to throw off the dust is relatively increased when the second speed is relatively low. After the rotation of the second set time, most of dust on the fan blades and in the air duct is adhered to the water film, namely the dust separation and enrichment process of the indoor unit.
And S22, controlling the fan to operate at the third rotating speed for a third set time period so that flowing condensed water can be formed on the surface of the heat exchanger to discharge the dust 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 third rotational speed, which is less than the second rotational speed, and relatively speaking, the third rotational speed is a low speed, and the second rotational speed is a high speed. The third rotational speed may be the same as or different from the first rotational speed, and is set to be the same as the first rotational speed for the sake of simplifying the control. The controlling of the indoor unit fan to operate at the third rotation speed may be controlling of the indoor unit fan to operate at the third rotation speed in a forward direction, or may be controlling of the indoor unit fan to operate at the third rotation speed in a reverse direction, and preferably, the indoor unit fan operates in the forward direction. The purpose of controlling the fan of the indoor unit to rotate 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 water film, namely the third set time is longer than the first set time. Along with the gradual increase of the condensed water, tiny water drops on the 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 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 automatic cleaning of the dust in a fan and an air duct of the indoor unit is realized.
Alternatively, the self-cleaning process of the fan and the air duct in this embodiment can be applied to an outdoor unit, that is, the indoor unit fan in embodiment 2 can be replaced by an outdoor unit fan, and correspondingly, the indoor unit air duct is replaced by an outdoor unit air duct, and the evaporator is replaced by a condenser. It should be noted that if the dust cleaning process of the outdoor unit fan and the air duct is performed, the air conditioner needs to operate in the heating mode.
The self-cleaning control method of the fan and the air duct of the air conditioner provided by the invention skillfully controls the switching time of the positive and negative rotation of the fan, and controls the high and low speed switching time and the high and 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 the heat exchanger in the first self-cleaning stage; controlling the fan to rotate reversely at a high speed in the second self-cleaning stage so as to change the wind direction in the air duct, blowing dust on the blades and in the air duct to the surface of the heat exchanger by utilizing the high-speed rotation of the fan blades and enabling the dust to be adhered to the water film, and collecting the dust on the fan blades and in the air duct; in the third stage of automatically cleaning, through control fan low-speed operation, make the heat exchanger surface produce the comdenstion water that is enough to flow, at the comdenstion water along the in-process that the heat exchanger surface flows, can take away absorbent dust in the lump, the flow process of comdenstion water forms the scouring action to the heat exchanger surface, thereby make the dust along with comdenstion water discharge indoor set or off-premises station, realize the self-cleaning of dust in indoor set and/or off-premises station fan and the wind channel, this deashing process need not to carry out dismouting machine work, also need not to dispose dedicated burnisher, save manpower and materials, can reduce the cost of deashing work by a wide margin, simplify the deashing process, convenience of customers uses, and.
It is understood that the technical solution of the present invention can also be presented in other embodiments. For example, in a primary self-cleaning process, self-cleaning of the fan and the air duct of the indoor unit may be performed first, and then the cooling mode is switched to the heating mode to perform self-cleaning of the fan and the air duct of the outdoor unit, specifically, the scheme of embodiment 1 may be adopted for both the outdoor unit and the indoor unit; or both the outdoor unit and the indoor unit adopt the scheme of the embodiment 2; or the indoor unit adopts the scheme of the embodiment 1, and the outdoor unit adopts the scheme of the embodiment 2; the solution of embodiment 2 can be adopted for the indoor unit, and the solution of embodiment 1 can be adopted for the outdoor unit; in addition, the dust removal of the outdoor unit and then the dust removal of the indoor unit can be performed. Therefore, it is understood by those skilled in the art that the protection scope of the present invention should not be limited to the embodiments described above, and all the schemes and the schemes combinations using the technical principles of the present invention should be within the protection scope of the present invention.
Further, with respect to each of the aforementioned set time periods and each of the rotational speeds of the fans, determination criteria have been described in detail in the embodiments, such as whether or not a water film can be generated, whether or not flowing condensed 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 is prepared as setting air channel, fan and heat exchanger in air channel, setting heat exchanger and fan in air channel,
the self-cleaning control method of the fan and the air channel is characterized by comprising the following steps:
controlling the fan to run at a first rotating speed for a first set time period so as to form a water film on the surface of the heat exchanger;
controlling the fan to rotate reversely at a second rotating speed, then rotate forwardly or reversely at a third rotating speed, and circularly executing the step at least once to enable the total operating time of the fan to be a second set time so as to enable dust attached to the fan and the air channel to be thrown out and attached to the water film;
controlling the fan to operate at a fourth rotating speed for a third set time period to enable the surface of the heat exchanger to form flowing condensed water so as to discharge dust by means of the flowing condensed water;
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 self-cleaning control method of the fan and the air duct of the air conditioner as claimed in claim 1, wherein the air conditioner comprises an indoor unit, and the air duct, the fan and the heat exchanger are respectively an indoor unit air duct, an indoor unit fan and an evaporator; and/or
The air conditioner comprises an outdoor unit, and the air duct, the fan and the heat exchanger are respectively an outdoor unit air duct, an outdoor unit fan and a condenser.
4. The self-cleaning control method of the fan and duct of the air conditioner as claimed in claim 3, wherein the self-cleaning control method of the fan and duct operates in a cooling mode when the duct, the fan and the heat exchanger are an indoor unit duct, an indoor unit fan and an evaporator, respectively; and/or
When the air duct, the fan and the heat exchanger are respectively an outdoor unit air duct, an outdoor unit fan and a condenser, the self-cleaning control method of the fan and the air duct operates in a heating mode.
5. The method of claim 4, wherein the indoor unit fan is a cross-flow fan; and/or
The outdoor fan is an axial fan.
6. A self-cleaning control method for fan and air channel of air conditioner is prepared as setting air channel, fan and heat exchanger in air channel, setting heat exchanger and fan in air channel,
the self-cleaning control method of the fan and the air channel is characterized by comprising the following steps:
controlling the fan to run at a first rotating speed for a first set time period so as to form a water film on the surface of the heat exchanger;
controlling the fan to reversely rotate at a second rotating speed for a second set time period so that dust attached to the fan and the air channel can be thrown out and attached to the water film;
controlling the fan to operate forwardly or reversely at a third rotating speed for a third set time period so that flowing condensed water can be formed on the surface of the heat exchanger to discharge dust by the aid of the flowing condensed water;
wherein the second rotational speed is greater than the first rotational speed and the third rotational speed.
7. The self-cleaning control method of a fan and a duct of an air conditioner according to claim 6, wherein the first rotation speed and the third rotation speed are the same; and/or
The third set duration is greater than the first set duration.
8. The self-cleaning control method of the fan and the air duct of the air conditioner as claimed in claim 6, wherein the air conditioner comprises an indoor unit, and the air duct, the fan and the heat exchanger are respectively an indoor unit air duct, an indoor unit fan and an evaporator; and/or
The air conditioner comprises an outdoor unit, and the air duct, the fan and the heat exchanger are respectively an outdoor unit air duct, an outdoor unit fan and a condenser.
9. The self-cleaning control method of a fan and a duct of an air conditioner according to claim 8, wherein the self-cleaning control method of a fan and a duct operates in a cooling mode when the duct, the fan and the heat exchanger are an indoor unit duct, an indoor unit fan and an evaporator, respectively; and/or
When the air duct, the fan and the heat exchanger are respectively an outdoor unit air duct, an outdoor unit fan and a condenser, the self-cleaning control method of the fan and the air duct operates in a heating mode.
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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| CN114688627B (en) * | 2020-12-28 | 2023-10-27 | 广东美的制冷设备有限公司 | Self-cleaning method of air conditioner, air conditioner and computer readable storage medium |
| CN113418233B (en) * | 2021-07-08 | 2022-06-10 | 美的集团武汉暖通设备有限公司 | Self-cleaning control method of air conditioner and air conditioner |
| CN114061023B (en) * | 2021-10-19 | 2023-06-23 | 青岛海尔空调器有限总公司 | Method and device for cleaning filter screen, household appliance and storage medium |
| CN114383192B (en) * | 2021-12-27 | 2023-10-20 | 青岛海尔空调器有限总公司 | Method and device for controlling air conditioner indoor unit and air conditioner indoor unit |
| CN116697454A (en) * | 2022-02-28 | 2023-09-05 | 青岛海尔空调器有限总公司 | Method and device for self-cleaning air conditioner fan, air conditioner and storage medium |
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| US6584995B2 (en) * | 2001-07-03 | 2003-07-01 | Atwood M. Kimbrough | HVAC enviro-clean valve |
| JP2014035089A (en) * | 2012-08-07 | 2014-02-24 | Sharp Corp | Air conditioner |
| CN106152390B (en) * | 2015-04-27 | 2020-03-06 | 广东美的制冷设备有限公司 | Air conditioner control method and device |
| CN105546751B (en) * | 2016-01-04 | 2018-04-10 | 广东美的暖通设备有限公司 | Air-conditioner control method and air conditioner |
| CN105783199B (en) * | 2016-04-27 | 2019-10-01 | 青岛海尔空调器有限总公司 | The clean method of air conditioner intelligent self-cleaning |
| CN110173826B (en) * | 2019-05-29 | 2022-08-05 | 广东美的制冷设备有限公司 | Air conditioner, self-cleaning method of indoor heat exchanger, and computer-readable storage medium |
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Effective date of registration: 20210813 Address after: No.1 Gangcheng South Road, Jiangbei District, Chongqing, 400026 Applicant after: CHONGQING HAIER AIR-CONDITIONER Co.,Ltd. Applicant after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Applicant after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Applicant before: Haier Zhijia Co.,Ltd. |
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