CN115200105A

CN115200105A - Air conditioner and self-cleaning method thereof, controller and readable storage medium

Info

Publication number: CN115200105A
Application number: CN202210830087.XA
Authority: CN
Inventors: 聂江涛
Original assignee: GD Midea Air Conditioning Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-10-18

Abstract

The invention provides an air conditioner and a self-cleaning method thereof, a controller and a readable storage medium, comprising the following steps: in a first heat exchange mode, controlling the operating parameters of the air conditioner to control the temperature of the target heat exchanger to be less than or equal to a first preset temperature so as to form frosting on the surface of the target heat exchanger, wherein the first preset temperature is the frosting temperature formed on the surface of the target heat exchanger; in the process of forming frosting on the surface of the target heat exchanger, controlling the water beating device to work, beating the condensed water from the water receiving tray through the water beating device and splashing the condensed water to the target heat exchanger; switching to a second heat exchange mode, adjusting operation parameters to control the temperature of the target heat exchanger to be higher than a second preset temperature so as to melt frosting on the surface of the target heat exchanger to form frosting water, splashing condensed water to the target heat exchanger in the frosting process on the surface of the target heat exchanger to improve the efficiency of forming frosting and reduce the time for finishing frosting; and defrosting after frosting to realize the cleaning of the target heat exchanger.

Description

Air conditioner and self-cleaning method thereof, controller and readable storage medium

Technical Field

The invention relates to the technical field of air conditioners, in particular to an air conditioner, a self-cleaning method thereof, a controller and a readable storage medium.

Background

At present, when a cooling and heating air conditioner runs for a long time, dust accumulation is easily caused by a heat exchanger, then the heat exchanger is easily frosted and iced, the running effect of the air conditioner is affected, the heat exchanger needs to be cleaned regularly, and the air conditioner is self-cleaned by a conventional frosting and then self-cleaning method of the heat exchanger. However, when the air conditioner independently utilizes frosting after frosting to carry out self-cleaning, the frosting rate is low, the frosting effect is poor, and the cleaning effect is poor.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an air conditioner, a self-cleaning method thereof, a controller and a readable storage medium, which can improve the efficiency of forming frosting and reduce the time for finishing frosting.

In a first aspect, an embodiment of the present invention provides a self-cleaning method for an air conditioner, where the air conditioner includes a target heat exchanger, a water tray, and a water beating device, where the water tray is used to collect condensed water formed on the surface of the target heat exchanger, and the water beating device is used to beat the condensed water from the water tray and pour the condensed water toward the target heat exchanger; the self-cleaning method comprises the following steps: in a first heat exchange mode, controlling operation parameters of the air conditioner to control the temperature of the target heat exchanger to be less than or equal to a first preset temperature so as to enable the surface of the target heat exchanger to form frosting, wherein the first preset temperature is the temperature at which the surface of the target heat exchanger forms frosting; controlling the water beating device to work in the process of forming frosting on the surface of the target heat exchanger, beating the condensed water from the water receiving tray through the water beating device and splashing the condensed water to the target heat exchanger; and switching to a second heat exchange mode, and adjusting the operation parameters to control the temperature of the target heat exchanger to be higher than a second preset temperature so as to enable frost on the surface of the target heat exchanger to be melted to form defrosting water, wherein the second preset temperature is the temperature of the frost on the surface of the target heat exchanger to be melted to form the defrosting water, one of the first heat exchange mode and the second heat exchange mode is a cooling mode, and the other one of the first heat exchange mode and the second heat exchange mode is a heating mode.

The self-cleaning method of the air conditioner provided by the embodiment of the invention at least has the following beneficial effects: according to the embodiment of the invention, the operation parameters of the air conditioner can be controlled in a first heat exchange mode, so that the temperature of the target heat exchanger is controlled to be less than or equal to a first preset temperature, the surface of the target heat exchanger is subjected to sublimation, and frosting is formed, wherein the first preset temperature is the temperature at which the surface of the target heat exchanger is subjected to sublimation and frosting is formed; in the process of forming frost by desublimation on the surface of the target heat exchanger, starting the water beating device, beating condensed water from the water receiving tray by the water beating device and splashing the condensed water to the target heat exchanger, and in the process of forming frost by desublimation on the surface of the target heat exchanger, splashing the condensed water to the target heat exchanger by the water beating device, so that the frost forming speed is increased, and the frost forming efficiency and quality are improved; after frosting is finished, switching to a second heat exchange mode, adjusting operation parameters, and controlling the temperature of the target heat exchanger to be higher than a second preset temperature so as to enable frosting on the surface of the target heat exchanger to melt and form defrosting water, and simultaneously carrying away dust and dirt attached to the surface of the target heat exchanger under the defrosting water flow so as to clean the target heat exchanger.

According to some embodiments of the invention, the air conditioner further comprises a water level sensor for detecting a water level of condensed water within the water tray, and before the controlling of the operation parameter of the air conditioner, the self-cleaning method further comprises: acquiring the current water level of condensed water in the water pan through the water level sensor; when the current water level is lower than a first preset water level, adjusting the operation parameters, and controlling the temperature of the target heat exchanger to be lower than or equal to a third preset temperature and higher than the first preset temperature so as to enable the surface of the target heat exchanger to form condensate water, wherein the third preset temperature is the temperature of the surface of the target heat exchanger to form condensate water

According to some embodiments of the present invention, the air conditioner further comprises a temperature sensor, a compressor and a fan, the temperature sensor is configured to detect a temperature of the target heat exchanger, and when the current water level is less than a first preset water level, the adjusting the operation parameter comprises at least one of: acquiring the temperature of the target heat exchanger through the temperature sensor, and when the temperature of the target heat exchanger is higher than the third preset temperature, increasing the operating frequency of the compressor and/or reducing the rotating speed of the fan so as to reduce the temperature of the target heat exchanger; acquiring the temperature of the target heat exchanger through the temperature sensor, and when the temperature of the target heat exchanger is less than or equal to the third preset temperature and greater than the first preset temperature, maintaining the running frequency of the compressor and/or the rotating speed of the fan; and obtaining the temperature of the target heat exchanger through the temperature sensor, and when the temperature of the target heat exchanger is less than or equal to the first preset temperature, reducing the operating frequency of the compressor and/or increasing the rotating speed of the fan so as to reduce the temperature of the target heat exchanger.

According to some embodiments of the invention, the air conditioner further comprises a temperature sensor, a compressor and a fan, the temperature sensor is used for detecting the temperature of the target heat exchanger, and in the first heat exchange mode, the controlling the operation parameters of the air conditioner comprises at least one of the following: acquiring the temperature of the target heat exchanger through the temperature sensor, and when the temperature of the target heat exchanger is higher than the first preset temperature, increasing the operating frequency of the compressor and/or reducing the rotating speed of the fan so as to reduce the temperature of the target heat exchanger; obtaining the temperature of the target heat exchanger through the temperature sensor, and when the temperature of the target heat exchanger is less than or equal to a fourth preset temperature, reducing the operating frequency of the compressor and/or increasing the rotating speed of the fan to increase the temperature of the target heat exchanger, wherein the fourth preset temperature is the protection temperature of the target heat exchanger, and the fourth preset temperature is less than the first preset temperature; and acquiring the temperature of the target heat exchanger through the temperature sensor, and when the temperature of the target heat exchanger is less than or equal to the first preset temperature and greater than the fourth preset temperature, maintaining the operating frequency of the compressor and/or the rotating speed of the fan.

According to some embodiments of the invention, the air conditioner further comprises a temperature sensor for detecting the temperature of the target heat exchanger, and a water pump for draining water in the water pan, the switching to the second heat exchange mode and the adjusting the operation parameter comprise at least one of: acquiring the temperature of the target heat exchanger through the temperature sensor, and controlling the air conditioner to keep operating in the second heat exchange mode when the temperature of the target heat exchanger is less than or equal to the second preset temperature; acquiring the temperature of the target heat exchanger through the temperature sensor, acquiring the running time of the air conditioner in the second heat exchange mode when the temperature of the target heat exchanger is higher than the second preset temperature, and keeping the air conditioner in the second heat exchange mode when the running time is less than the preset defrosting time; the temperature of the target heat exchanger is obtained through the temperature sensor, when the temperature of the target heat exchanger is higher than a second preset temperature, the running time of the air conditioner in the second heat exchange mode is obtained, and when the running time is larger than or equal to a preset defrosting time, the water pump is controlled to work, so that the water pump discharges water in the water pan.

According to some embodiments of the invention, after the controlling the operation of the watering device, the self-cleaning method further comprises: acquiring the working time of the water fetching device; and when the working time is more than or equal to the preset time, controlling the water fetching device to stop working.

According to some embodiments of the present invention, the air conditioner further includes a water pump for discharging water within the water collector, and the self-cleaning method further includes: and when the current water level is higher than a second preset water level, controlling the water pump to work so that the water pump discharges water in the water pan.

In a second aspect, an embodiment of the present invention provides a controller, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the self-cleaning method as described above in the first aspect when executing the computer program.

In a third aspect, an embodiment of the present invention provides an air conditioner, including the controller according to the second aspect.

In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions for performing the self-cleaning method according to the first aspect.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.

FIG. 1 is a schematic diagram of a system architecture platform for performing a self-cleaning method of an air conditioner according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;

fig. 3 is a flowchart of a self-cleaning method of an air conditioner according to an embodiment of the present invention;

fig. 4 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention;

fig. 5 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention;

fig. 6 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention;

fig. 7 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention;

fig. 8 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention;

fig. 9 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention;

fig. 10 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention;

fig. 11 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention;

fig. 12 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention;

fig. 13 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention;

fig. 14 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention;

fig. 15 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention;

fig. 16 is an overall flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings only for the convenience of description of the present invention and simplification of the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise specifically limited, terms such as set, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention by combining the specific contents of the technical solutions.

Based on the situation, the invention provides an air conditioner and a self-cleaning method thereof, a controller and a readable storage medium, wherein the air conditioner can firstly enter a first heat exchange mode, the temperature of a target heat exchanger is controlled to be less than or equal to a first preset temperature, and the surface of the target heat exchanger is subjected to sublimation to form frosting; in the process of frosting the surface of the target heat exchanger, the water supply device is started to pour condensed water onto the surface of the target heat exchanger, so that the humidity of the surface of the target heat exchanger is increased, the frosting forming speed is increased, and the frosting forming efficiency and quality are improved. After frosting is formed on the surface of the target heat exchanger, entering a second heat exchange mode, and controlling the temperature of the target heat exchanger to be higher than a second preset temperature so as to melt the frosting formed on the surface of the target heat exchanger to form defrosting water, wherein the defrosting water simultaneously carries away dust and dirt attached to the surface of the target heat exchanger under the defrosting water flow to realize the cleaning of the target heat exchanger, the first preset temperature is the temperature at which the surface of the target heat exchanger is subjected to sublimation to form frosting, the second preset temperature is the temperature at which the frosting on the surface of the target heat exchanger is melted to form defrosting water, one of the first heat exchange mode and the second heat exchange mode is a refrigerating mode, and the other one of the first heat exchange mode and the second heat exchange mode is a heating mode, namely when the first heat exchange mode is the refrigerating mode, the second heat exchange mode is the heating mode; when the first heat exchange mode is the heating mode, the second heat exchange mode is the refrigeration mode, frosting and defrosting of the target heat exchanger are achieved by switching two different heat exchange modes to complete cleaning of the target heat exchanger, meanwhile, the condensed water formed by the target heat exchanger is splashed back to the target heat exchanger by combining the water fetching device, the frosting forming speed is accelerated, the frosting forming efficiency and quality are improved, and the cleaning effect is improved.

The embodiments of the present invention will be further explained with reference to the drawings.

As shown in fig. 1, fig. 1 is a schematic diagram of a system architecture platform for performing a self-cleaning method of an air conditioner according to an embodiment of the present invention.

The system architecture platform 100 of the present invention includes one or more processors 110 and a memory 120, and fig. 1 illustrates one processor 110 and one memory 120 as an example.

The processor 110 and the memory 120 may be connected by a bus or other means, such as by a bus in FIG. 1.

The memory 120, which is a non-transitory computer readable storage medium, may be used to store non-transitory software programs as well as non-transitory computer executable programs. Further, the memory 120 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, memory 120 optionally includes memory 120 located remotely from processor 110, which may be connected to system architecture platform 100 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

Those skilled in the art will appreciate that the device architecture shown in fig. 1 does not constitute a limitation of system architecture platform 100, and may include more or fewer components than shown, or some components in combination, or a different arrangement of components.

In the system architecture platform 100 shown in fig. 1, the processor 110 may be configured to call a self-cleaning program stored in the memory 120, so as to implement a self-cleaning method of the air conditioner.

Based on the hardware structure of the system architecture platform 100, various embodiments of the air conditioner of the present invention are proposed.

As shown in fig. 2, fig. 2 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention.

Specifically, the air conditioner 200 of the embodiment of the present invention includes, but is not limited to, a heat exchanger 210, a water tray 220, a water level sensor 221, a water pump 240, a water pump 250, and a temperature sensor 260.

It should be noted that, in the embodiment of the present invention, the heat exchanger 210 includes, but is not limited to, a first heat exchanger (not shown in the drawings) and a second heat exchanger (not shown in the drawings), the first heat exchanger is used for performing heat exchange with indoor air, the second heat exchanger is used for performing heat exchange with outdoor air, and when the air conditioner 200 performs self-cleaning, when the first heat exchange mode is a heating mode, that is, the second heat exchange mode is a cooling mode, the second heat exchanger is used as a target heat exchanger for cleaning; and when the first heat exchange mode is a refrigerating mode, namely the second heat exchange mode is a heating mode, cleaning the first heat exchanger as a target heat exchanger.

It should be noted that the water pan 220 is used for collecting condensed water formed on the surface of the target heat exchanger; the water beating device 240 is used for beating the condensed water from the water receiving tray and splashing the condensed water to the target heat exchanger; the water level sensor 221 is arranged on the water receiving tray 220 and is used for detecting the water level of condensed water in the water receiving tray; the water pump 250 is connected with the water pan 220, and the water pump 250 is used for discharging condensed water in the water pan 220; and a temperature sensor 260 for detecting a temperature of the target heat exchanger.

It should be noted that the water fetching device 240 includes, but is not limited to, a water fetching motor and a water fetching wheel, the water fetching motor may be directly connected to the water fetching wheel and directly drives the water fetching wheel to rotate, the water fetching motor may also be connected to the water fetching wheel through a driving component, and indirectly drives the water fetching wheel to rotate through the driving component.

It should be noted that the water pumping device 240 may be disposed inside the water receiving tray 220, may be disposed outside the water receiving tray 220, or may be installed at another position of the air conditioner 200, and the position of the water pumping device 240 is not particularly limited in the embodiment of the present invention.

Note that the position of the water level sensor 221 may be provided inside the water tray 220, may be provided outside the water tray 220, or may be attached to another position of the water tray 220, and the position of the water level sensor 221 is not particularly limited in the embodiment of the present invention.

Those skilled in the art will appreciate that the configuration shown in fig. 2 does not constitute a limitation of the air conditioner, and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

Based on the above system architecture platform 100 and the hardware structure of the air conditioner, various embodiments of the self-cleaning method of the present invention are proposed.

As shown in fig. 3, fig. 3 is a flowchart of a self-cleaning method of an air conditioner according to an embodiment of the present invention, and the self-cleaning method includes, but is not limited to, step S300, step S310 and step S320.

Step 300, in a first heat exchange mode, controlling operation parameters of the air conditioner to control the temperature of a target heat exchanger to be less than or equal to a first preset temperature so as to form frosting on the surface of the target heat exchanger, wherein the first preset temperature is the frosting temperature formed on the surface of the target heat exchanger;

step S310, controlling the water beating device to work in the process of forming frosting on the surface of the target heat exchanger, beating the condensed water from the water receiving tray through the water beating device and splashing the condensed water to the target heat exchanger;

and step S320, switching to a second heat exchange mode, adjusting the operation parameters to control the temperature of the target heat exchanger to be higher than a second preset temperature so as to melt frost on the surface of the target heat exchanger to form defrosting water, wherein the second preset temperature is the temperature at which the frost on the surface of the target heat exchanger melts into the defrosting water, one of the first heat exchange mode and the second heat exchange mode is a cooling mode, and the other one is a heating mode.

It should be noted that, in the embodiment of the present invention, the heat exchanger of the air conditioner includes, but is not limited to, a first heat exchanger and a second heat exchanger, the first heat exchanger is used for exchanging heat with indoor air, the second heat exchanger is used for exchanging heat with outdoor air, and when the first heat exchange mode is a heating mode, that is, the second heat exchange mode is a cooling mode, the second heat exchanger is used as a target heat exchanger for cleaning; and when the first heat exchange mode is a refrigerating mode, namely the second heat exchange mode is a heating mode, cleaning the first heat exchanger as a target heat exchanger.

Specifically, in the embodiment of the present invention, when the first heat exchange mode is a heating mode, and the second heat exchange mode is a cooling mode, the second heat exchanger is used as a target heat exchanger for cleaning, and in the heating mode, because the surface of the target heat exchanger is subjected to sublimation at a first preset temperature to form frost, the temperature of the target heat exchanger is controlled to be less than or equal to the first preset temperature by adjusting the operating parameters of the air conditioner.

In the process of frosting the surface of the target heat exchanger, the water supply device is started to pour condensed water onto the surface of the target heat exchanger, so that the humidity of the surface of the target heat exchanger is increased, the frosting forming speed is increased, and the frosting forming efficiency and quality are improved.

After the frosting is formed on the surface of the target heat exchanger, the operation mode of the air conditioner is switched to a second heat exchange mode, namely, the operation mode is switched to a refrigeration mode, under the refrigeration mode, the surface of the target heat exchanger is heated, the frosting on the surface is melted, the defrosting water is formed, and the dust and dirt attached to the surface of the target heat exchanger are taken away when the defrosting water flows down, so that the cleaning of the target heat exchanger is realized. Because the frosting on the surface of the target heat exchanger can be melted when reaching the second preset temperature and is changed into defrosting water, the temperature of the target heat exchanger is controlled to be higher than the second preset temperature by adjusting the operation parameters.

Specifically, in another embodiment of the present invention, when the first heat exchange mode is a cooling mode, and the second heat exchange mode is a heating mode, the first heat exchanger is used as a target heat exchanger for cleaning, and in the cooling mode, because the surface of the target heat exchanger is subjected to sublimation at a first preset temperature to form frost, the temperature of the target heat exchanger is controlled to be less than or equal to the first preset temperature by adjusting the operating parameters of the air conditioner.

In the process of frosting the target heat exchanger, the water supply device is started, condensed water is splashed to the surface of the target heat exchanger, the humidity of the surface of the target heat exchanger is increased, the frosting forming speed is accelerated, and the frosting forming efficiency and quality are improved.

After the frosting is formed on the surface of the target heat exchanger, the operation mode of the air conditioner is switched to a second heat exchange mode, namely, the operation mode is switched to a heating mode, the surface of the target heat exchanger is heated in the heating mode, the frosting on the surface is melted to form defrosting water, and the dust and dirt attached to the surface of the target heat exchanger are simultaneously carried away in the defrosting water to clean the target heat exchanger. Because the frosting on the surface of the target heat exchanger can be melted when reaching the second preset temperature and is changed into defrosting water, the temperature of the target heat exchanger is controlled to be higher than the second preset temperature by adjusting the operation parameters.

It should be noted that the above operation parameters include, but are not limited to, an operation frequency of the compressor and a rotational speed of the fan, and the operation frequency of the compressor and the rotational speed of the fan may be preset, or may be any operation frequency value and any rotational speed value.

It should be noted that, the first preset temperature and the second preset temperature may be calibrated in advance. Specifically, the surface of the target heat exchanger can be tested to desublimate in different using states to form frosting temperature, and the test temperature is used as a first preset temperature; the frosting and melting of the surface of the target heat exchanger under different use states can be tested, the temperature of the defrosting water is formed, and the test temperature is used as a second preset temperature.

In addition, it should be noted that the hitting of the water beating device by the water receiving tray may be performed by directly hitting the condensed water in the water receiving tray by the water beating device disposed inside the water receiving tray, or may be performed by disposing the water beating device outside the water receiving tray, and conveying the condensed water in the water receiving tray to the water beating device through the conveying component.

As shown in fig. 4, fig. 4 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention, and the self-cleaning method according to the embodiment of the present invention includes, but is not limited to, step S400 and step S410.

Step S400, acquiring the current water level of the condensed water in the water pan through a water level sensor;

and S410, when the current water level is lower than the first preset water level, adjusting operation parameters, and controlling the temperature of the target heat exchanger to be lower than or equal to a third preset temperature and higher than the first preset temperature so as to enable the surface of the target heat exchanger to form condensate water, wherein the third preset temperature is the temperature of the surface of the target heat exchanger for forming the condensate water.

In the embodiment of the invention, the air conditioner comprises a water level sensor for detecting the water level of the condensed water, the current water level of the condensed water is obtained through the water level sensor, if the current water level is detected to be smaller than a first preset water level, namely the water level of the condensed water does not meet the optimal water-spraying and frosting water level, if the water-spraying device is started to spray water to the target heat exchanger at the moment, the surface of the target heat exchanger can be accelerated to be sublimated to form frosting, but the frosting effect is poor. Uneven water coverage on the surface of the target heat exchanger can occur, partial humidity of the surface of the target heat exchanger is large, partial humidity is small, difference between frosting formed by the part with large humidity and frosting formed by the part with small humidity is large finally, and accordingly final cleaning effect is influenced.

Adjusting operation parameters, controlling the temperature of the target heat exchanger between a third preset temperature and a first preset temperature, forming condensed water due to the fact that condensation can occur when the surface of the target heat exchanger reaches the third preset temperature, and meanwhile forming frosting due to the fact that the condensation can occur when the surface of the target heat exchanger reaches the first preset temperature.

It should be noted that, the first preset water level may be calibrated in advance. Specifically, the embodiment of the invention can test the cover condition of the condensed water from the water pan on the target heat exchanger when the condensed water in the water pan is in different water levels, and the tested water level is taken as the first preset water level.

It should be noted that, the first preset temperature and the second preset temperature may be calibrated in advance. Specifically, the surface of the target heat exchanger can be tested to desublimate in different using states to form frosting temperature, and the test temperature is used as a first preset temperature; according to the embodiment of the invention, the surface of the target heat exchanger can be tested to generate condensation under different using states to form the temperature of condensed water, and the test temperature is taken as the third preset temperature.

In addition, the position of the water level sensor may be arranged inside the water receiving tray, may be arranged outside the water receiving tray, or may be installed at another position of the water receiving tray.

As shown in fig. 5, fig. 5 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention, and the self-cleaning method according to the embodiment of the present invention includes, but is not limited to, step S500 and step S510.

Step S500, acquiring the temperature of a target heat exchanger through a temperature sensor;

and step S510, when the temperature of the target heat exchanger is higher than a third preset temperature, increasing the operating frequency of the compressor and/or reducing the rotating speed of the fan so as to reduce the temperature of the target heat exchanger.

In the embodiment of the invention, the air conditioner comprises a temperature sensor for acquiring the temperature of the target heat exchanger, condensation can occur when the surface of the target heat exchanger reaches a third preset temperature to form condensed water, and if the temperature of the target heat exchanger is higher than the third preset temperature, namely the temperature of the target heat exchanger is higher than the temperature of the formed condensed water, the surface of the target heat exchanger cannot form the condensed water. The operation frequency of the compressor is increased, the temperature of the refrigerant is reduced, the temperature of the target heat exchanger is lower than or equal to a third preset temperature, condensation occurs on the surface of the target heat exchanger, condensate water is formed, the exchange between air at the target heat exchanger and outside air can be reduced by reducing the rotating speed of the fan, and heat exchange between the target heat exchanger and the outside is reduced, so that the temperature of the target heat exchanger is reduced, condensation occurs on the surface of the target heat exchanger, and the condensate water is formed.

It should be noted that, the third preset temperature may be calibrated in advance. Specifically, the temperature of the condensate water formed by the surface condensation of the target heat exchanger in different use states can be tested, and the test temperature is used as the third preset temperature.

In addition, it should be noted that, the decreasing of the temperature of the target heat exchanger includes, but is not limited to, increasing the operating frequency of the compressor and/or decreasing the rotation speed of the fan, and meanwhile, the increasing value of the operating frequency of the compressor may be preset or may be any increasing value; similarly, the reduction value of the rotation speed of the fan may be preset or may be any reduction value.

As shown in fig. 6, fig. 6 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention, and the self-cleaning method according to the embodiment of the present invention includes, but is not limited to, step S600 and step S610.

Step S600, acquiring the temperature of a target heat exchanger through a temperature sensor;

step S610, when the temperature of the target heat exchanger is less than or equal to a third preset temperature and greater than the first preset temperature, keeping the running frequency of the compressor and/or the rotating speed of the fan;

in an embodiment of the present invention, the air conditioner includes a temperature sensor for obtaining a temperature of a target heat exchanger, including but not limited to a temperature of refrigerant at a manifold midpoint within the target heat exchanger. The third preset temperature is the temperature of condensation generated on the surface of the target heat exchanger to form condensed water, the first preset temperature is the temperature of frost formation generated on the surface of the target heat exchanger, if the detected temperature of the target heat exchanger is less than or equal to the third preset temperature and greater than the first preset temperature, condensation is generated on the surface of the target heat exchanger to form condensed water, and meanwhile, condensation and frost formation cannot occur, so that the operating frequency of the compressor and/or the rotating speed of the fan are proper, and the operating frequency of the compressor/the rotating speed of the fan are kept to continue to generate condensation on the surface of the target heat exchanger to form condensed water. The surface of the target heat exchanger is prevented from frosting due to too low temperature of the target heat exchanger, so that the generation efficiency of the condensed water is influenced, and the stability of the formation of the condensed water is improved.

It should be noted that, the first preset temperature and the third preset temperature may be calibrated in advance. Specifically, the temperature at which the surface of the target heat exchanger forms frosting in different use states can be tested, and the test temperature is used as a first preset temperature.

As shown in fig. 7, fig. 7 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention, and the self-cleaning method according to the embodiment of the present invention includes, but is not limited to, step S700 and step S710.

Step S700, acquiring the temperature of a target heat exchanger through a temperature sensor;

and step S710, when the temperature of the target heat exchanger is less than or equal to a first preset temperature, reducing the operating frequency of the compressor and/or increasing the rotating speed of the fan so as to increase the temperature of the target heat exchanger.

In an embodiment of the present invention, the air conditioner includes a temperature sensor for obtaining a temperature of a target heat exchanger, including but not limited to a temperature of refrigerant at a manifold midpoint within the target heat exchanger. The first preset temperature is the temperature at which the surface of the target heat exchanger is subjected to sublimation to form frosting, when the temperature of the target heat exchanger is smaller than or equal to the first preset temperature, namely the surface of the target heat exchanger is subjected to sublimation to form frosting, the efficiency of forming condensed water is reduced, the compressor is subjected to frequency reduction to increase the temperature of a refrigerant entering the target heat exchanger so as to increase the temperature of the target heat exchanger, and/or the rotating speed of the fan is increased to increase the exchange between air at the target heat exchanger and outside air, so that the heat exchange between the target heat exchanger and the outside is increased, the temperature of the target heat exchanger is increased, and the formation of frosting on the surface of the target heat exchanger is avoided to influence the generation efficiency of the condensed water.

In addition, it should be noted that, the increasing of the temperature of the target heat exchanger includes, but is not limited to, decreasing the operating frequency of the compressor and/or increasing the rotation speed of the fan, and meanwhile, the decreasing value of the operating frequency of the compressor may be preset or may be any decreasing value; similarly, the increase value of the rotation speed of the fan may be preset, or may be an arbitrary increase value.

As shown in fig. 8, fig. 8 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention, and the self-cleaning method according to the embodiment of the present invention includes, but is not limited to, step S800 and step S810.

Step S800, acquiring the temperature of a target heat exchanger through a temperature sensor;

and step S810, when the temperature of the target heat exchanger is higher than a first preset temperature, increasing the operating frequency of the compressor and/or reducing the rotating speed of the fan so as to reduce the temperature of the target heat exchanger.

In an embodiment of the present invention, the air conditioner includes a temperature sensor for obtaining a temperature of a target heat exchanger, including but not limited to a temperature of refrigerant at a manifold midpoint within the target heat exchanger. The first preset temperature is the temperature at which the surface of the target heat exchanger is desublimated and frosted, and if the temperature of the target heat exchanger acquired by the temperature sensor is higher than the first preset temperature, namely the temperature of the target heat exchanger is higher than the temperature at which frosting is formed, at the moment, frosting cannot be formed on the surface of the target heat exchanger. The running frequency of the compressor is increased, the temperature of the refrigerant is reduced, the temperature of the target heat exchanger is reduced, so that the temperature of the target heat exchanger is lower than or equal to a first preset temperature, the desublimation is generated on the surface of the target heat exchanger, the frosting is formed, the exchange between air at the target heat exchanger and outside air can be reduced by reducing the rotating speed of the fan, the heat exchange between the target heat exchanger and the outside is reduced, the temperature of the target heat exchanger is reduced, the desublimation is generated on the surface of the target heat exchanger, and the frosting is formed.

It should be noted that the third preset temperature may be calibrated in advance. Specifically, the temperature of the condensate water formed by the surface condensation of the target heat exchanger in different use states can be tested, and the test temperature is used as the third preset temperature.

In addition, it should be noted that, the decreasing of the temperature of the target heat exchanger includes, but is not limited to, the above-mentioned increasing of the operating frequency of the compressor and/or decreasing of the rotational speed of the fan, and meanwhile, the increasing value of the operating frequency of the compressor may be preset, and may also be any increasing value; similarly, the reduction value of the rotation speed of the fan may be preset or may be any reduction value.

As shown in fig. 9, fig. 9 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention, and the self-cleaning method according to the embodiment of the present invention includes, but is not limited to, step S900 and step S910.

Step S900, acquiring the temperature of a target heat exchanger through a temperature sensor;

step S910, when the temperature of the target heat exchanger is less than or equal to a fourth preset temperature, reducing the operating frequency of the compressor and/or increasing the rotation speed of the fan to increase the temperature of the target heat exchanger, wherein the fourth preset temperature is the protection temperature of the target heat exchanger, and the fourth preset temperature is less than the first preset temperature.

In an embodiment of the present invention, the air conditioner includes a temperature sensor for obtaining a temperature of a target heat exchanger, including but not limited to a temperature of refrigerant at a manifold midpoint within the target heat exchanger. The fourth preset temperature is the protection temperature of the target heat exchanger, namely the temperature of the target heat exchanger triggering low-temperature protection, and damage to the target heat exchanger caused by too low temperature of the target heat exchanger is avoided. If the detected temperature of the target heat exchanger is less than or equal to the fourth preset temperature, the target heat exchanger is in a protection mode, and meanwhile, the operating frequency of the compressor is reduced, so that the temperature of the refrigerant entering the target heat exchanger is increased, and the temperature of the target heat exchanger is increased to enable the temperature of the target heat exchanger to be greater than the fourth preset temperature; the rotating speed of the fan is increased, so that the exchange between the air at the target heat exchanger and the outside air can be increased, the heat exchange between the target heat exchanger and the outside is further increased, and the temperature of the target heat exchanger is increased. The target heat exchanger is prevented from entering a protection mode and being incapable of normal desublimation to form frosting.

In addition, it should be noted that, the increasing of the temperature of the target heat exchanger includes, but is not limited to, decreasing the operating frequency of the compressor and/or increasing the rotation speed of the fan, and meanwhile, the decreasing value of the operating frequency of the compressor may be preset or may be any decreasing value; similarly, the increase value of the rotation speed of the fan may be preset, or may be any increase value.

As shown in fig. 10, fig. 10 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention, and the self-cleaning method according to the embodiment of the present invention includes, but is not limited to, step S1000 and step S1010.

Step S1000, acquiring the temperature of a target heat exchanger through a temperature sensor;

and step S1010, when the temperature of the target heat exchanger is less than or equal to the first preset temperature and greater than a fourth preset temperature, keeping the running frequency of the compressor and/or the rotating speed of the fan.

In an embodiment of the present invention, the air conditioner includes a temperature sensor for obtaining a temperature of a target heat exchanger, including but not limited to a temperature of refrigerant at a manifold midpoint within the target heat exchanger. The first preset temperature is the temperature at which the surface of the target heat exchanger is desublimated to form frosting, and the fourth preset temperature is the temperature at which the target heat exchanger triggers low-temperature protection, so that the target heat exchanger is prevented from being damaged due to too low temperature of the target heat exchanger. If the detected temperature of the target heat exchanger is less than or equal to the first preset temperature and greater than the third preset temperature, the surface of the target heat exchanger is desublimated to form frosting, meanwhile, the target heat exchanger cannot be triggered to enter a protection mode, and the running frequency of the compressor and/or the rotating speed of the fan are/is proper. And keeping the running frequency of the compressor and/or the rotating speed of the fan to continuously generate desublimation on the surface of the target heat exchanger to form frost. When frosting is formed on the surface of the target heat exchanger, the target heat exchanger is prevented from entering a protection mode due to too low temperature of the target heat exchanger, the frosting forming efficiency is further influenced, and the frosting forming stability is improved.

As shown in fig. 11, fig. 11 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention, which includes, but is not limited to, step S1100 and step S1110.

Step S1100, acquiring the temperature of a target heat exchanger through a temperature sensor;

and step S1110, when the temperature of the target heat exchanger is less than or equal to a second preset temperature, controlling the air conditioner to keep operating in a second heat exchange mode.

In an embodiment of the present invention, the air conditioner includes a temperature sensor for obtaining a temperature of a target heat exchanger, including but not limited to a temperature of refrigerant at a manifold midpoint within the target heat exchanger. After the first heat exchange mode is switched to the second heat exchange mode, namely the frosting stage of the surface of the target heat exchanger is finished, the defrosting stage is started, and the frosting on the surface of the target heat exchanger is melted when reaching a second preset temperature and is converted into defrosting water. If the detected temperature of the target heat exchanger is less than or equal to the second preset temperature, namely the temperature of the target heat exchanger does not reach the defrosting temperature, the frosting on the surface of the target heat exchanger cannot be melted, the target heat exchanger is cleaned, the air conditioner is controlled to be operated in the second heat exchange mode, the temperature of the target heat exchanger is increased to the second preset temperature, the frosting on the surface is melted, and defrosting water is formed.

As shown in fig. 12, fig. 12 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention, which includes, but is not limited to, step S1200, step S1210 and step S1220.

Step S1200, acquiring the temperature of a target heat exchanger through a temperature sensor;

step S1210, when the temperature of the target heat exchanger is higher than a second preset temperature, acquiring the running time of the air conditioner in a second heat exchange mode;

in step S1220, when the operation time is less than the preset defrosting time, the air conditioner is kept operating in the second heat exchange mode.

In the embodiment of the invention, the air conditioner comprises a temperature sensor for acquiring the temperature of the target heat exchanger, after the first heat exchange mode is switched to the second heat exchange mode, because frost on the surface of the target heat exchanger melts when reaching a second preset temperature, the frost melts and forms the defrosting water, if the detected temperature of the target heat exchanger is higher than the second preset temperature, namely the temperature of the target heat exchanger reaches the defrosting temperature, the frost on the surface of the target heat exchanger melts and forms the defrosting water.

The defrosting stage can be finished only by ensuring that the formed frost is completely melted, so that the influence on the normal operation of a subsequent target heat exchanger is reduced. And acquiring the running time of the air conditioner running in the second heat exchange mode, and if the running time is less than the preset defrosting time, namely frost formed on the surface of the target heat exchanger is not completely melted, continuing to keep the air conditioner running in the second heat exchange mode.

As shown in fig. 13, fig. 13 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention, and the self-cleaning method according to the embodiment of the present invention includes, but is not limited to, step S1300, step S1310 and step S1320.

Step 1300, acquiring the temperature of a target heat exchanger through a temperature sensor;

step 1310, when the temperature of the target heat exchanger is higher than a second preset temperature, acquiring the running time of the air conditioner in a second heat exchange mode;

and step S1320, when the running time is greater than or equal to the preset defrosting time, controlling the water pump to work so that the water pump discharges the water in the water pan.

In the embodiment of the invention, the air conditioner comprises a temperature sensor for acquiring the temperature of the target heat exchanger, and further comprises a water pump for discharging condensed water in the water pan, after the first heat exchange mode is switched to the second heat exchange mode, because frost on the surface of the target heat exchanger melts when reaching a second preset temperature, the frost melts and turns into defrosting water, and if the detected temperature of the target heat exchanger is higher than the second preset temperature, namely the temperature of the target heat exchanger reaches the defrosting temperature, the frost on the surface of the target heat exchanger melts and forms the defrosting water.

Because the frost melting needs a period of time and the frost melting stage can be ended only by ensuring that the formed frost is completely melted, the influence on the normal operation of the subsequent target heat exchanger is reduced. And acquiring the running time of the second heat exchange mode, if the running time is more than or equal to the preset defrosting time, namely the frosting formed on the surface of the target heat exchanger is completely melted, starting the water pump, and discharging the water in the water pan.

As shown in fig. 14, fig. 14 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention, and the self-cleaning method provided by the embodiment of the present invention includes, but is not limited to, step S1400 and step S1410.

Step S1400, acquiring the working time of the water fetching device;

and step 1410, when the working time is greater than or equal to the preset water fetching time, controlling the water fetching device to stop working.

In the embodiment of the invention, in the frosting stage of the target heat exchanger, the surface of the target heat exchanger is desublimated and frosted, and the water fetching device is started to pour condensed water in the water receiving tray to the target heat exchanger, so that the humidity of the surface of the target heat exchanger is increased, the frosting efficiency and quality are improved, but the frosting is too thick due to overlong water fetching time, and further the subsequent stage frosting is influenced. And acquiring the working time of the water fetching device, and if the working time is less than the preset water fetching time, continuing the water fetching and frosting work of the water fetching device. And if the working time is more than or equal to the preset water fetching time, stopping the water fetching device.

As shown in fig. 15, fig. 15 is a flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention, and the self-cleaning method according to the embodiment of the present invention includes, but is not limited to, step S1500.

And S1500, when the current water level is higher than a second preset water level, controlling the water pump to work so that the water pump discharges water in the water pan.

In an embodiment of the present invention, the air conditioner includes a water pump for discharging water in the drip tray. If current water level is greater than the second and predetermines the water level, beat the device and beat the condition that easily causes the comdenstion water to spill over the water collector and appear when beating the comdenstion water, perhaps because the water level is too high to lead to beating the device drive power not enough and then unable normal comdenstion water of beating, the effect of frosting of beating water is seriously influenced, therefore, in time with the comdenstion water discharge in the water collector, if detect current water level and be greater than the second and predetermine the water level, start the water pump and carry out the drainage, with the comdenstion water discharge air conditioner in the water collector, when reducing the device of beating water and beat water, the comdenstion water spills over the condition appearance of water collector.

It should be noted that the second preset water level may be calibrated in advance, and specifically, in the embodiment of the present invention, the splashing overflow condition of the condensed water when the water fetching device fetches water is tested when the condensed water in the water receiving tray is at different water levels, and the tested water level is used as the second preset water level.

In addition, it should be noted that, in the embodiment of the present invention, the operation time of the water pump is obtained, and when the operation time of the water pump reaches the preset drainage time, the water level of the condensed water is detected again.

As shown in fig. 16, fig. 16 is an overall flowchart of a self-cleaning method of an air conditioner according to another embodiment of the present invention, and the self-cleaning method according to the embodiment of the present invention includes, but is not limited to, steps S1600 to S1621.

Step S1600, starting a self-cleaning mode;

step S1601, operating in a first heat exchange mode;

step S1602, the water pump and the water pump are kept not started;

step S1603, detecting the temperature T1 and the water level H of a target heat exchanger;

step S1604, judging whether the water level H meets a first preset water level H1, if so, executing step S1610, otherwise, executing step S1605;

step S1605, judging whether the temperature T1 of the target heat exchanger is larger than a second temperature constant C2 or not;

step S1606, the compressor raises the frequency by delta fr1, the rotating speed of the first fan is reduced by delta N1, the rotating speed of the second fan is reduced by delta N2, the running time t1 is prolonged, and the step S1603 is executed again;

step 1607, judging whether the temperature T1 of the target heat exchanger is smaller than or equal to the second temperature constant C2 and larger than the fifth temperature constant C5, if so, executing step 1608, otherwise, executing step 1609;

step S1608, keeping the compressor frequency and the fan speed, running time t2, and returning to execute step S1603;

step S1609, the compressor reduces the frequency by delta fr2, runs for time t3, and returns to execute the step S1603;

step S1610, determining whether the temperature T1 of the target heat exchanger is greater than a first temperature constant C1, if so, performing step S1611, otherwise, performing step S1612;

step S1611, the compressor increases the frequency by Δ fr3, decreases the first fan speed by Δ N3, decreases the second fan speed by Δ N4, runs for t4, and returns to step S1603;

step S1612 of determining whether the temperature of the target heat exchanger is less than or equal to the first temperature constant C1 and greater than the third temperature constant C3, if so, performing step S1613, otherwise, performing step S1614;

step S1613, keeping the frequency of the compressor and the rotating speed of the fan unchanged;

step S1614, reducing the frequency of the compressor by delta fr4, increasing the rotating speed of the second fan by delta N5, running time t9, and returning to execute the step S1603;

step S1615, determining the operation time t _s1 If the time is longer than the time t5, if so, executing a step S1616, otherwise, executing a step S1613;

step S1616, the water beating motor is started, and the running time t6 is prolonged at the rotating speed delta ND1

Step S1617, closing the water fetching motor;

step S1618, operating in a second heat exchange mode;

step S1619, judging whether the target heat exchanger temperature T1 is greater than or equal to a fourth temperature constant C4 or not and the running time T is _s2 If the value is greater than or equal to t7, if yes, execute step S1620, otherwise execute step S1618;

step S1620, the water pump is started to drain water, and the operation time t8 of the second fan is set;

in step S1621, the self-cleaning mode exits.

It should be noted that, in the embodiment of the present invention, the temperature T1 of the target heat exchanger includes, but is not limited to, a target heat exchanger middle temperature, which refers to a temperature of the refrigerant at a middle position of a header pipe length in the target heat exchanger; Δ fr refers to the amount by which the compressor frequency is increased or decreased; Δ N refers to the amount by which the fan speed is increased or decreased; the delta ND1 refers to the running rotating speed value of the water fetching motor; h1 refers to a first preset water level, which is less than a maximum water level; c1 refers to a first temperature constant, which is used to determine whether the temperature of the target heat exchanger meets the frosting requirement of the target heat exchanger, i.e. the first preset temperature in the above embodiment; c2 is a second temperature constant, and is used to determine whether the temperature of the target heat exchanger meets an upper limit value of a temperature interval in which condensation water is generated by the target heat exchanger, that is, a third preset temperature in the above embodiment; c3 is a third temperature constant, which is used to determine whether the temperature of the target heat exchanger is too low, so that the target heat exchanger enters a low-temperature protection mode, that is, a fourth preset temperature in the above embodiment; c4 is a fourth temperature constant used to determine whether the temperature of the target heat exchanger satisfies a temperature value for defrosting, i.e., the second preset temperature in the above embodiment; c5 is a fifth temperature constant used for judging whether the temperature of the target heat exchanger meets the lower limit value of a temperature interval of condensed water generated by condensation of the target heat exchanger; t1 to t8 are time constants, where t5 is the accumulated time for maintaining the defrosting operation, and t7 is the accumulated time for maintaining the defrosting operation, i.e. the preset defrosting time in the above embodiment.

In the embodiment of the invention, after the air conditioner starts a self-cleaning mode, whether the water level of the water pan can meet the requirement of water supply and frost formation is judged firstly, namely whether the water level H is more than or equal to a first preset water level H1 is judged, if yes, the target heat exchanger is cleaned, otherwise, the target heat exchanger is condensed to generate condensed water, the water pan collects the condensed water, the water pan enters a cleaning process of firstly performing frost formation and then performing defrosting until the water level is more than or equal to the first preset water level, the defrosting process is combined with a water supply motor to supply water, the whole defrosting process and the whole defrosting process detect the water level of the water pan, and the water pump is started to drain water when the water level is more than or equal to a second preset water level.

The frosting process in the embodiment of the invention comprises the following steps: if the temperature of the target heat exchanger is larger than the first temperature constant, the air conditioner reduces the temperature of the target heat exchanger by increasing the frequency of the compressor and reducing the rotating speed of the fan; if the temperature of the target heat exchanger is less than or equal to the first temperature constant and greater than the third temperature constant, the frequency of the compressor and the rotating speed of the fan are kept unchanged, and the target heat exchanger is stably operated to frost; the temperature of the target heat exchanger is smaller than a third temperature constant, and the air conditioner keeps the temperature of the target heat exchanger stable between the first temperature constant and the third temperature constant by reducing the frequency of the compressor and increasing the rotating speed of the fan; the temperature of the target heat exchanger is smaller than or equal to the first temperature constant and larger than the third temperature constant, but the accumulated frosting operation time does not reach the preset frosting time, and the stable operation is continuously kept; the temperature of the target heat exchanger is smaller than or equal to a first temperature constant and larger than a third temperature constant, the accumulated frosting operation time reaches the preset frosting time, and a water supply motor is started to supply water to accelerate frosting;

the defrosting process in the embodiment of the invention comprises the following steps: the temperature of the target heat exchanger is smaller than the fourth temperature constant, and the air conditioner continues to operate in a second heat exchange mode; the temperature of the target heat exchanger is greater than or equal to the fourth temperature constant, but the accumulated defrosting operation time does not reach the preset defrosting time, and the air conditioner continues to operate in the second heat exchange mode; and the temperature of the target heat exchanger is greater than or equal to the fourth temperature constant, the accumulated defrosting operation time reaches the preset defrosting time, the water pump is started to drain water, the lower fan is started, and the surface of the target heat exchanger is dried.

The specific process of the embodiment of the invention includes but is not limited to: the air conditioner is started in a self-cleaning mode, the water pumping motor and the water pump are kept not started, and the air conditioner runs in a first heat exchange mode; detecting the temperature T1 and the water level H of a target heat exchanger, and judging whether the water level H meets a first preset water level H1, namely whether the water level H is more than or equal to the first preset water level H1; if the water level H is smaller than a first preset water level H1, judging that the temperature T1 of the target heat exchanger is larger than a second temperature constant C2, if so, increasing the frequency of a compressor by delta fr1, reducing the rotating speed of a first fan by delta N1, reducing the rotating speed of the second fan by delta N2, and running time T1, and returning to the temperature T1 and the water level H of the detected target heat exchanger, otherwise, judging whether the temperature T1 of the target heat exchanger is smaller than or equal to the second temperature constant C2 and larger than a fifth temperature constant C5, if so, keeping the frequency of the compressor and the rotating speed of the fan, running time T2, and returning to the temperature T1 and the water level H of the detected target heat exchanger, otherwise, reducing the frequency of the compressor by delta fr2, running time T3, and returning to the temperature T1 and the water level H of the detected target heat exchanger; meanwhile, if the water level H is greater than or equal to a second preset water level, starting a water pump to supply and drain water; when the water level H meets a first preset water level H1, if the temperature T1 of the target heat exchanger is greater than a first temperature constant C1, increasing the frequency of the compressor by delta fr3, reducing the rotating speed of the upper fan by delta N3, reducing the rotating speed of the lower fan by delta N4, operating time T4, and returning to the temperature T1 and the water level H of the detected target heat exchanger; if the temperature T1 of the target heat exchanger is less than or equal to the first temperature constant C1, judging whether the temperature of the target heat exchanger is maintained between the first temperature constant C1 and the third temperature constant C3, and if so, keeping the frequency of the compressor and the rotating speed of the fan unchangedOtherwise, the compressor reduces the frequency by delta fr4, the rotating speed of the second fan is increased by delta N5 or the rotating speed of the first fan is increased by delta N6, and the temperature T1 and the water level H of the target heat exchanger are detected after the running time T9; when the temperature of the target heat exchanger is maintained between the first temperature constant C1 and the third temperature constant C3, entering a frosting process, and acquiring the accumulated frosting time, namely the running time t _s1 Judging the operation time t _s1 If the running time is greater than the preset frosting time, judging whether the running time is greater than the preset frosting time, if so, starting a water beating motor to beat water, and running the time t6 at the rotating speed delta ND1, otherwise, continuing frosting; the working time of the water fetching motor is obtained, and when the working time is greater than or equal to the preset water fetching time, the water fetching motor is closed; switching to a second heat exchange mode for operation; judging whether the water level H is larger than or equal to a second preset water level, if so, starting a water pump for draining, and otherwise, judging whether the temperature T1 of the target heat exchanger is larger than or equal to a fourth temperature constant C4; if the temperature T1 of the target heat exchanger is smaller than the fourth temperature constant C4, continuing to operate in the second heat exchange mode; if the temperature T1 of the target heat exchanger is larger than or equal to the fourth temperature constant C4, acquiring the running time T of the air conditioner in the second heat exchange mode _s2 Judging the operation time t _s2 Whether the defrosting time is more than or equal to preset defrosting time t7 or not; if running time t _s2 If the defrosting time is less than the preset defrosting time t7, the operation is continued in the second heat exchange mode; if running time t _s2 If the defrosting time is more than or equal to the preset defrosting time t7, the water pump is started to drain water, and the operation time t8 of the first fan or the second fan is prolonged; the self-cleaning mode is exited.

It should be noted that, in the embodiment of the present invention, because the heat exchanger of the air conditioner includes, but is not limited to, a first heat exchanger and a second heat exchanger, the first heat exchanger is used for exchanging heat with indoor air, and the second heat exchanger is used for exchanging heat with outdoor air, when the first heat exchange mode is a heating mode, that is, the second heat exchange mode is a cooling mode, the second heat exchanger is used as a target heat exchanger for cleaning; and when the first heat exchange mode is a refrigerating mode, namely the second heat exchange mode is a heating mode, cleaning the first heat exchanger as a target heat exchanger.

It should be noted that, in the above-mentioned first fan and second fan, in the embodiment of the present invention, the air conditioner is provided with the first heat exchanger and the second heat exchanger, and each heat exchanger is provided with a corresponding fan, that is, the first fan corresponds to the first heat exchanger, and the second fan corresponds to the second heat exchanger.

In addition, an embodiment of the present invention provides a controller including: a memory, a processor, and a computer program stored on the memory and executable on the processor.

The processor and memory may be connected by a bus or other means.

The memory, which is a non-transitory computer readable storage medium, may be used to store non-transitory software programs as well as non-transitory computer executable programs. Further, the memory may include high speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory optionally includes memory located remotely from the processor, and these remote memories may be connected to the processor through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

It should be noted that the controller in this embodiment may be applied to the self-cleaning method of the air conditioner as in the above embodiments, and the controller in this embodiment has the same inventive concept as the self-cleaning method of the air conditioner as in the above embodiments, so that these embodiments have the same implementation principle and technical effect, and are not described in detail herein.

Non-transitory software programs and instructions required to implement the self-cleaning method of the air conditioner as described in the above embodiments are stored in the memory, and when executed by the processor, the self-cleaning method of the air conditioner as described in the above embodiments is performed, for example, the method steps S300 to S320 in fig. 3, the method steps S400 to S410 in fig. 4, the method steps S500 to S510 in fig. 5, the method steps S600 to S610 in fig. 6, the method steps S700 to S710 in fig. 7, the method steps S800 to S810 in fig. 8, the method steps S900 to S910 in fig. 9, the method steps S1000 to S1010 in fig. 10, the method steps S1100 to S710 in fig. 11, the method steps S1200 to S1220 in fig. 12, the method steps S1300 to S1320 in fig. 13, the method steps S1400 to S1410 in fig. 14, the method steps S1500 in fig. 15, and the method steps S1600 to S1621 in fig. 16 are performed.

The above described controller embodiments are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may also be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

In addition, an embodiment of the present invention further provides an air conditioner, and the structure of the air conditioner provided in the embodiment of the present invention may be the structure of the air conditioner shown in the embodiment of fig. 2, or include, but is not limited to, the controller in the above embodiment.

According to the technical scheme of the embodiment of the invention, a first heat exchange mode is firstly entered, the temperature of a target heat exchanger is controlled to be less than or equal to a first preset temperature, and the surface of the target heat exchanger is subjected to sublimation to form frosting; in the process of frosting the surface of the target heat exchanger, the water supply device is started to pour condensed water onto the surface of the target heat exchanger, so that the humidity of the surface of the target heat exchanger is increased, the frosting forming speed is increased, and the frosting forming efficiency and quality are improved. After frosting is formed on the surface of the target heat exchanger, entering a second heat exchange mode, and controlling the temperature of the target heat exchanger to be higher than a second preset temperature so as to melt the frosting formed on the surface of the target heat exchanger to form defrosting water, wherein the defrosting water simultaneously carries away dust and dirt attached to the surface of the target heat exchanger under the defrosting water flow to realize the cleaning of the target heat exchanger, the first preset temperature is the temperature at which the surface of the target heat exchanger is subjected to sublimation to form frosting, the second preset temperature is the temperature at which the frosting on the surface of the target heat exchanger is melted to form defrosting water, one of the first heat exchange mode and the second heat exchange mode is a refrigerating mode, and the other one of the first heat exchange mode and the second heat exchange mode is a heating mode, namely when the first heat exchange mode is the refrigerating mode, the second heat exchange mode is the heating mode; when the first heat exchange mode is a heating mode, the second heat exchange mode is a refrigerating mode, the frosting and defrosting of the target heat exchanger are achieved by switching two different heat exchange modes, the target heat exchanger is cleaned, meanwhile, the condensate water formed by the target heat exchanger is splashed back to the target heat exchanger by combining the water splashing device, the frosting forming speed is increased, the frosting forming efficiency and quality are improved, and the cleaning effect is improved.

It should be noted that, for the specific implementation and technical effects of the air conditioner according to the embodiments of the present invention, reference may be made to the specific implementation and technical effects of the self-cleaning method of the air conditioner according to any of the embodiments described above.

In addition, an embodiment of the present invention also provides a computer-readable storage medium storing computer-executable instructions for performing the self-cleaning method of the air conditioner described above. For example, the method steps S300 to S320 in fig. 3, S400 to S410 in fig. 4, S500 to S510 in fig. 5, S600 to S610 in fig. 6, S700 to S710 in fig. 7, S800 to S810 in fig. 8, S900 to S910 in fig. 9, S1000 to S1010 in fig. 10, S1100 to S1110 in fig. 11, S1200 to S1220 in fig. 12, S1300 to S1320 in fig. 13, S1400 to S1410 in fig. 14, S1500 in fig. 15, and S1600 to S1621 in fig. 16 described above are performed.

It is to be noted that, for the specific implementation and technical effects of the computer-readable storage medium according to the embodiments of the present invention, reference may be made to the specific implementation and technical effects of the self-cleaning method for an air conditioner according to any one of the embodiments described above.

One of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.

Claims

1. The self-cleaning method of the air conditioner is characterized by comprising a target heat exchanger, a water receiving tray and a water beating device, wherein the water receiving tray is used for collecting condensed water formed on the surface of the target heat exchanger, and the water beating device is used for beating the condensed water from the water receiving tray and splashing the condensed water to the target heat exchanger; the self-cleaning method comprises the following steps:

in a first heat exchange mode, controlling operation parameters of the air conditioner to control the temperature of the target heat exchanger to be less than or equal to a first preset temperature so as to enable the surface of the target heat exchanger to form frosting, wherein the first preset temperature is the temperature at which the surface of the target heat exchanger forms frosting;

controlling the water beating device to work in the process of forming frosting on the surface of the target heat exchanger, beating the condensed water from the water receiving tray through the water beating device and splashing the condensed water to the target heat exchanger;

and switching to a second heat exchange mode, and adjusting the operation parameters to control the temperature of the target heat exchanger to be higher than a second preset temperature so as to enable frost on the surface of the target heat exchanger to be melted to form defrosting water, wherein the second preset temperature is the temperature of the frost on the surface of the target heat exchanger to be melted to form the defrosting water, one of the first heat exchange mode and the second heat exchange mode is a cooling mode, and the other one of the first heat exchange mode and the second heat exchange mode is a heating mode.

2. A self-cleaning method as claimed in claim 1, wherein the air conditioner further comprises a water level sensor for detecting a level of condensed water in the water tray, the self-cleaning method further comprising, before said controlling an operation parameter of the air conditioner:

acquiring the current water level of the condensed water in the water pan through the water level sensor;

when the current water level is lower than a first preset water level, adjusting the operation parameters, and controlling the temperature of the target heat exchanger to be lower than or equal to a third preset temperature and higher than the first preset temperature so as to enable the surface of the target heat exchanger to form condensate water, wherein the third preset temperature is the temperature of the surface of the target heat exchanger to form the condensate water.

3. A self-cleaning method as claimed in claim 2, wherein said air conditioner further comprises a temperature sensor, a compressor and a fan, said temperature sensor is used for detecting the temperature of said target heat exchanger, and when said current water level is less than a first preset water level, said adjusting said operation parameter comprises at least one of:

acquiring the temperature of the target heat exchanger through the temperature sensor, and when the temperature of the target heat exchanger is higher than the third preset temperature, increasing the operating frequency of the compressor and/or reducing the rotating speed of the fan so as to reduce the temperature of the target heat exchanger;

acquiring the temperature of the target heat exchanger through the temperature sensor, and when the temperature of the target heat exchanger is less than or equal to the third preset temperature and greater than the first preset temperature, maintaining the running frequency of the compressor and/or the rotating speed of the fan;

and when the temperature of the target heat exchanger is less than or equal to the first preset temperature, reducing the operating frequency of the compressor and/or increasing the rotating speed of the fan so as to increase the temperature of the target heat exchanger.

4. A self-cleaning method as claimed in claim 1, wherein the air conditioner further comprises a temperature sensor for detecting a temperature of the target heat exchanger, a compressor and a fan, and the controlling of the operation parameters of the air conditioner in the first heat exchange mode comprises at least one of:

acquiring the temperature of the target heat exchanger through the temperature sensor, and when the temperature of the target heat exchanger is higher than the first preset temperature, increasing the operating frequency of the compressor and/or reducing the rotating speed of the fan so as to reduce the temperature of the target heat exchanger;

obtaining the temperature of the target heat exchanger through the temperature sensor, and when the temperature of the target heat exchanger is less than or equal to a fourth preset temperature, reducing the operating frequency of the compressor and/or increasing the rotating speed of the fan to increase the temperature of the target heat exchanger, wherein the fourth preset temperature is the protection temperature of the target heat exchanger, and the fourth preset temperature is less than the first preset temperature;

and acquiring the temperature of the target heat exchanger through the temperature sensor, and when the temperature of the target heat exchanger is less than or equal to the first preset temperature and greater than the fourth preset temperature, maintaining the operating frequency of the compressor and/or the rotating speed of the fan.

5. The self-cleaning method of claim 1, wherein the air conditioner further comprises a temperature sensor for detecting a temperature of the target heat exchanger and a water pump for draining water in the water collector, the switching to the second heat exchange mode and adjusting the operating parameter comprises at least one of:

acquiring the temperature of the target heat exchanger through the temperature sensor, and controlling the air conditioner to keep operating in the second heat exchange mode when the temperature of the target heat exchanger is less than or equal to the second preset temperature;

acquiring the temperature of the target heat exchanger through the temperature sensor, acquiring the running time of the air conditioner in the second heat exchange mode when the temperature of the target heat exchanger is higher than the second preset temperature, and keeping the air conditioner in the second heat exchange mode when the running time is less than the preset defrosting time;

and when the running time is greater than or equal to the preset defrosting time, the water pump is controlled to work so as to enable the water pump to discharge the water in the water pan.

6. The self-cleaning method of claim 1, wherein after said controlling said watering device to operate, said self-cleaning method further comprises:

acquiring the working time of the water fetching device;

and when the working time is more than or equal to the preset water fetching time, controlling the water fetching device to stop working.

7. A self-cleaning method as claimed in claim 2, wherein the air conditioner further comprises a water pump for draining water in the water tray, the self-cleaning method further comprising:

and when the current water level is higher than a second preset water level, controlling the water pump to work so that the water pump discharges water in the water pan.

8. A controller, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the self-cleaning method according to any one of claims 1 to 7.

9. An air conditioner characterized by comprising the controller according to claim 8.

10. A computer-readable storage medium, characterized in that computer-executable instructions are stored for performing the self-cleaning method as claimed in any one of claims 1 to 7.