阅读说明：本技术 控制空调器自清洁烘干的方法、空调室内机和存储介质 (Method for controlling self-cleaning drying of air conditioner, air conditioner indoor unit and storage medium ) 是由 胡敬伟 蒋贤国 孟庆好 于 2020-04-15 设计创作，主要内容包括：本发明提出了一种控制空调器自清洁烘干的方法、空调室内机和存储介质。控制空调器自清洁烘干方法包括：检测到自清洁烘干指令,控制空调器运行制热模式；控制多个室内换热组件中的任意一个室内换热组件的电子节流件至第一烘干保护开度,并控制任意一个室内换热组件的室内风扇暂停运行,以及,控制多个室内换热组件中除了任意一个室内换热组件外的其它室内换热组件的电子节流件至第二烘干保护开度,其中,第二烘干保护开度大于第一烘干保护开度；任意一个室内换热组件的室内换热器的温度达到灭菌温度,累计烘干时长至预设烘干时长。该方法可以实现有效灭菌,且能够避免室内换热器因温度过高而发生的过载保护。(The invention provides a method for controlling self-cleaning drying of an air conditioner, an air conditioner indoor unit and a storage medium. The self-cleaning drying method for controlling the air conditioner comprises the following steps: detecting a self-cleaning drying instruction, and controlling the air conditioner to operate in a heating mode; controlling an electronic throttling element of any one indoor heat exchange assembly in the plurality of indoor heat exchange assemblies to a first drying protection opening degree, controlling an indoor fan of any one indoor heat exchange assembly to pause, and controlling electronic throttling elements of other indoor heat exchange assemblies except any one indoor heat exchange assembly in the plurality of indoor heat exchange assemblies to a second drying protection opening degree, wherein the second drying protection opening degree is larger than the first drying protection opening degree; and the temperature of the indoor heat exchanger of any one indoor heat exchange assembly reaches the sterilization temperature, and the drying time is accumulated to the preset drying time. The method can realize effective sterilization and can avoid overload protection of the indoor heat exchanger due to overhigh temperature.)

1. A method for controlling self-cleaning drying of an air conditioner is characterized in that,

the air conditioner comprises an indoor air conditioner body, wherein the indoor air conditioner body comprises an indoor machine body shell and a plurality of indoor heat exchange assemblies arranged in the indoor machine body shell, and each indoor heat exchange assembly comprises an indoor heat exchanger, an indoor fan and an electronic throttling piece connected with the indoor heat exchanger;

the method comprises the following steps:

detecting a self-cleaning drying instruction, and controlling the air conditioner to operate in a heating mode;

controlling an electronic throttling element of any one indoor heat exchange assembly in the plurality of indoor heat exchange assemblies to a first drying protection opening degree, controlling an indoor fan of any one indoor heat exchange assembly to pause, and controlling electronic throttling elements of other indoor heat exchange assemblies except any one indoor heat exchange assembly in the plurality of indoor heat exchange assemblies to a second drying protection opening degree, wherein the second drying protection opening degree is larger than the first drying protection opening degree;

and the temperature of the indoor heat exchanger of any one indoor heat exchange assembly reaches the sterilization temperature, and the accumulated drying time is up to the preset drying time.

2. The method of claim 1, wherein the plurality of indoor heat exchange assemblies are a first indoor heat exchange assembly and a second indoor heat exchange assembly, the controlling the electronic throttle of any one of the plurality of indoor heat exchange assemblies to a first drying protection opening degree and the controlling the indoor fan of any one of the plurality of indoor heat exchange assemblies to pause, and the controlling the electronic throttle of the other ones of the plurality of indoor heat exchange assemblies except for any one of the plurality of indoor heat exchange assemblies to a second drying protection opening degree comprises:

controlling an electronic throttling element of the first indoor heat exchange assembly to a first drying protection opening degree, controlling an indoor fan of the first indoor heat exchange assembly to pause, and controlling an electronic throttling element of the second indoor heat exchange assembly to a second drying protection opening degree so as to dry an indoor heat exchanger of the first indoor heat exchange assembly;

after the temperature of the indoor heat exchanger of the first indoor heat exchange assembly reaches the sterilization temperature and is maintained after the preset drying time is long, controlling an electronic throttling piece of the second indoor heat exchange assembly to reach the first drying protection opening degree, controlling an indoor fan of the second indoor heat exchange assembly to pause, and controlling the electronic throttling piece of the first indoor heat exchange assembly to reach the second drying protection opening degree so as to dry the indoor heat exchanger of the second indoor heat exchange assembly.

3. The method of controlling a self-cleaning drying of an air conditioner as claimed in claim 1 or 2, wherein the first drying protection opening degree is less than a heating mode opening degree, and the second drying protection opening degree is greater than or equal to the heating mode opening degree.

4. The method of controlling self-cleaning drying of an air conditioner according to claim 1, further comprising:

and drying the indoor heat exchangers of the indoor heat exchange assemblies in sequence according to a set sequence or a default sequence or a user selection instruction.

5. The method of claim 3, wherein the first drying protection opening is 30 ≦ 100 and the second drying protection opening is 200 ≦ 480.

6. The method for controlling self-cleaning drying of the air conditioner according to claim 1 or 2, wherein the sterilization temperature is greater than or equal to 56 ℃, and the preset drying time is greater than or equal to 30 minutes.

7. A non-transitory computer storage medium having a computer program stored thereon, wherein the computer program is executed to implement the method for controlling self-cleaning drying of an air conditioner according to any one of claims 1 to 6.

8. An indoor unit of an air conditioner, comprising:

an indoor unit casing;

the indoor heat exchange assemblies are arranged in the indoor unit shell, and each indoor heat exchange assembly comprises an indoor heat exchanger, an indoor fan and an electronic throttling element connected with the indoor heat exchanger;

the controller is used for controlling the air conditioner to operate in a heating mode and controlling the air conditioner to operate in a plurality of modes when a self-cleaning drying instruction is detected, and controlling the electronic throttling piece of any one indoor heat exchange assembly in the indoor heat exchange assemblies to be in the first drying protection opening degree to control the indoor fan of any one indoor heat exchange assembly to be in the pause operation mode and controlling the indoor fan to be in the plurality of modes except for the electronic throttling piece of any one indoor heat exchange assembly except for the electronic throttling piece of other indoor heat exchange assemblies in the indoor heat exchange assemblies to be in the second drying protection opening degree, the temperature of the indoor heat exchanger of any one indoor heat exchange assembly reaches the sterilization temperature, the accumulated drying time is long until the preset drying time, and the second drying protection opening degree is larger than the first drying protection opening degree.

9. An indoor unit of an air conditioner according to claim 8,

a first air supply outlet and a second air supply outlet are arranged on two sides of the indoor unit shell;

a first air channel communicated with the first air supply outlet and a second air channel communicated with the second air supply outlet are arranged in the indoor unit shell, and an air return opening is arranged below the indoor unit shell;

a first indoor fan and a first indoor heat exchanger are arranged in the first air channel, and a second indoor fan and a second indoor heat exchanger are arranged in the second air channel.

10. The indoor unit of claim 9, wherein the controller is configured to control the electronic throttle connected to the first indoor heat exchanger to a first drying protection opening degree and control the first indoor fan to pause operation, and control the electronic throttle connected to the second indoor heat exchanger to a second drying protection opening degree to dry the first indoor heat exchanger, and, after the temperature of the first indoor heat exchanger reaches the sterilization temperature and the preset drying time period is maintained, control the electronic throttle connected to the second indoor heat exchanger to the first drying protection opening degree and control the second indoor fan to pause operation, and control the electronic throttle connected to the first indoor heat exchanger to the second drying protection opening degree and accumulate the drying time period to the preset drying time period when the temperature of the second indoor heat exchanger reaches the sterilization temperature, so as to dry the second indoor heat exchanger.

Technical Field

The invention relates to the technical field of air conditioners, in particular to a method for controlling self-cleaning and drying of an air conditioner, a non-temporary computer storage medium and an air conditioner indoor unit.

Background

Most of air conditioners in the market at present have a self-cleaning function, fins of a heat exchanger are cleaned by means of condensed water, water stains and dirt are left after the fins are cleaned in the mode, bacteria on the fins can grow transversely and generate peculiar smell if the water stains and the dirt are accumulated for a long time, and the bacteria enter a room along with air conditioning wind. Because sterilization can be effectively carried out in an environment of 56 ℃ for more than 30 minutes, when the heat exchanger is dried by using refrigerant heating, the fan motor needs to be operated at low power, namely, low-wind flow is used for radiating heat of the heat exchanger, so that the heat exchanger cannot generate overload protection due to overhigh temperature, but the method can cause the temperature of the front end of the heat exchanger to reach 56 ℃, the temperature of the heat exchanger can be gradually reduced along the flowing direction of the refrigerant and cannot reach the standard of 56 ℃, and the risk of overload protection of the heat exchanger can be increased if the heat exchanger is operated for a long time, so that the sterilization process cannot be maintained for more than 30 minutes.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a method for controlling a self-cleaning drying of an air conditioner, which can achieve effective sterilization and can prevent an overload protection of an indoor heat exchanger due to an excessive temperature.

A second object of the invention is to propose a non-transitory computer storage medium.

The third purpose of the invention is to provide an air conditioner indoor unit.

In order to achieve the above object, in a first aspect of the present invention, a method for controlling self-cleaning drying of an air conditioner is provided, where the air conditioner includes an indoor unit, the indoor unit includes an indoor unit casing and a plurality of indoor heat exchange assemblies disposed in the indoor unit casing, where each indoor heat exchange assembly includes an indoor heat exchanger, an indoor fan, and an electronic throttle connected to the indoor heat exchanger; the method comprises the following steps: detecting a self-cleaning drying instruction, and controlling the air conditioner to operate in a heating mode; controlling an electronic throttling element of any one indoor heat exchange assembly in the plurality of indoor heat exchange assemblies to a first drying protection opening degree, controlling an indoor fan of any one indoor heat exchange assembly to pause, and controlling electronic throttling elements of other indoor heat exchange assemblies except any one indoor heat exchange assembly in the plurality of indoor heat exchange assemblies to a second drying protection opening degree, wherein the second drying protection opening degree is larger than the first drying protection opening degree; and the temperature of the indoor heat exchanger of any one indoor heat exchange assembly reaches the sterilization temperature, and the accumulated drying time is up to the preset drying time.

According to the method for controlling the self-cleaning drying of the air conditioner, when the self-cleaning drying is carried out, the air conditioner operates in a heating mode, an electronic throttling element of any one indoor heat exchange assembly in a plurality of indoor heat exchange assemblies is controlled to reach a first drying protection opening degree, the corresponding indoor fan is controlled to pause to operate, so that the flow velocity of a refrigerant is reduced, the heat dissipation of the refrigerant in the indoor heat exchanger is reduced, the temperature of the whole indoor heat exchanger can be continuously increased and reaches a sterilization temperature, the drying and sterilization of the indoor heat exchanger are realized, meanwhile, electronic throttling elements of other indoor heat exchange assemblies except any one indoor heat exchange assembly in the plurality of indoor heat exchange assemblies are controlled to reach a second drying protection opening degree, the second drying protection opening degree is larger than the first drying protection opening degree, so that the pressure of the refrigerant in the air conditioner is relieved, and overload protection caused by the temperature increase due to the stop of the operation of the indoor fan of any one indoor heat exchange assembly is prevented, by the control mode, the temperature of the indoor heat exchanger of any indoor heat exchange assembly reaches the sterilization temperature, and the preset drying time is maintained, so that the method provided by the embodiment of the invention can achieve the effect of effectively sterilizing the indoor heat exchanger and avoid the overload protection risk of the indoor heat exchanger under the condition that the air conditioner keeps normal functional operation.

In some embodiments, the controlling the electronic throttle of any one of the indoor heat exchange assemblies to a first drying protection opening degree, and controlling the indoor fan of any one of the indoor heat exchange assemblies to pause, and controlling the electronic throttle of the other indoor heat exchange assemblies except for any one of the indoor heat exchange assemblies to a second drying protection opening degree includes: controlling an electronic throttling element of the first indoor heat exchange assembly to a first drying protection opening degree, controlling an indoor fan of the first indoor heat exchange assembly to pause, and controlling an electronic throttling element of the second indoor heat exchange assembly to a second drying protection opening degree so as to dry an indoor heat exchanger of the first indoor heat exchange assembly; after the temperature of the indoor heat exchanger of the first indoor heat exchange assembly reaches the sterilization temperature and is maintained after the preset drying time is long, controlling an electronic throttling piece of the second indoor heat exchange assembly to reach the first drying protection opening degree, controlling an indoor fan of the second indoor heat exchange assembly to pause, and controlling the electronic throttling piece of the first indoor heat exchange assembly to reach the second drying protection opening degree so as to dry the indoor heat exchanger of the second indoor heat exchange assembly.

In some embodiments, the first drying protection opening degree is smaller than the heating mode opening degree, and the second drying protection opening degree is greater than or equal to the heating mode opening degree.

In some embodiments, the indoor heat exchangers of the indoor heat exchange assemblies are sequentially dried according to a set sequence or a default sequence or a user selection instruction.

In some embodiments, 30 is equal to or smaller than 100, and 200 is equal to or smaller than 480.

In some embodiments, the sterilization temperature is greater than or equal to 56 ℃, and the preset drying time is greater than or equal to 30 minutes.

In order to achieve the above object, a second aspect of the present invention provides a non-transitory computer storage medium having a computer program stored thereon, where the computer program is executed to implement the method for controlling self-cleaning drying of an air conditioner according to the above embodiment.

In order to achieve the above object, a third aspect of the present invention provides an air conditioning indoor unit, including: an indoor unit casing; the indoor heat exchange assemblies are arranged in the indoor unit shell, and each indoor heat exchange assembly comprises an indoor heat exchanger, an indoor fan and an electronic throttling element connected with the indoor heat exchanger; the controller is used for controlling the air conditioner to operate in a heating mode and controlling the air conditioner to operate in a plurality of modes when a self-cleaning drying instruction is detected, and controlling the electronic throttling piece of any one indoor heat exchange assembly in the indoor heat exchange assemblies to be in the first drying protection opening degree to control the indoor fan of any one indoor heat exchange assembly to be in the pause operation mode and controlling the indoor fan to be in the plurality of modes except for the electronic throttling piece of any one indoor heat exchange assembly except for the electronic throttling piece of other indoor heat exchange assemblies in the indoor heat exchange assemblies to be in the second drying protection opening degree, the temperature of the indoor heat exchanger of any one indoor heat exchange assembly reaches the sterilization temperature, the accumulated drying time is long until the preset drying time, and the second drying protection opening degree is larger than the first drying protection opening degree.

According to the air conditioner indoor unit provided by the embodiment of the invention, after the controller receives the self-cleaning drying instruction, the controller controls the air conditioner to operate in the heating mode, further controls the electronic throttling element of any one indoor heat exchange assembly in the plurality of indoor heat exchange assemblies to reach the first drying protection opening, controls the corresponding indoor fan to pause to operate so as to reduce the flow rate of the refrigerant and reduce the heat dissipation of the refrigerant in the indoor heat exchanger, thereby enabling the temperature of the whole indoor heat exchanger to be continuously increased and reach the sterilization temperature, realizing the drying and sterilization purposes of the indoor heat exchanger, and simultaneously controls the electronic throttling elements of other indoor heat exchange assemblies except any one indoor heat exchange assembly in the plurality of indoor heat exchange assemblies to reach the second drying protection opening so as to unload the pressure of the refrigerant in the air conditioner and prevent overload protection caused by the temperature increase due to the stop operation of the indoor fan of any one indoor heat exchange assembly, the air conditioner provided by the embodiment of the invention can achieve the effect of effectively sterilizing the indoor heat exchanger and avoid the overload protection risk of the indoor heat exchanger under the condition of keeping normal functional operation under the condition that the temperature of the indoor heat exchanger of any one indoor heat exchange assembly reaches the sterilization temperature and the drying time is controlled to reach the preset drying time.

In some embodiments, a first air supply outlet and a second air supply outlet are arranged on two sides of the indoor unit shell; a first air channel communicated with the first air supply outlet and a second air channel communicated with the second air supply outlet are arranged in the indoor unit shell, and an air return opening is arranged below the indoor unit shell; a first indoor fan and a first indoor heat exchanger are arranged in the first air channel, and a second indoor fan and a second indoor heat exchanger are arranged in the second air channel.

In some embodiments, the controller is configured to control the electronic throttle connected to the first indoor heat exchanger to a first drying protection opening degree and control the first indoor fan to pause operation, and control the electronic throttle connected to the second indoor heat exchanger to a second drying protection opening degree to dry the first indoor heat exchanger, and, after the temperature of the first indoor heat exchanger reaches the sterilization temperature and the preset drying time period is maintained, control the electronic throttle connected to the second indoor heat exchanger to the first drying protection opening degree and control the second indoor fan to pause operation, and control the electronic throttle connected to the first indoor heat exchanger to the second drying protection opening degree and accumulate the drying time period to the preset drying time period when the temperature of the second indoor heat exchanger reaches the sterilization temperature, so as to dry the second indoor heat exchanger.

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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of the connection of air conditioner components according to one embodiment of the present invention;

fig. 2 is a flowchart of a method for controlling a self-cleaning drying method of an air conditioner according to an embodiment of the present invention;

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

fig. 4 is a block diagram of an air conditioning indoor unit according to an embodiment of the present invention;

fig. 5 is a schematic structural view of an air outlet of an indoor unit of an air conditioner according to an embodiment of the present invention.

Reference numerals:

an indoor unit casing 20; an indoor heat exchange assembly 10;

a compressor 1; a four-way valve 2; an outdoor heat exchanger 3; an outdoor electric fan 4; an outdoor electronic throttle 5; an electronic throttle 6; an indoor heat exchanger 7; an indoor fan 8; a controller 9;

a first electronic throttle 61; a second electronic throttle 62; the first indoor heat exchanger 71; the second indoor heat exchanger 72; a first indoor fan 81; a second indoor fan 82;

a first air duct 11; a second air duct 12; and an air return opening 13.

Detailed Description

Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.

The air conditioner can comprise an air conditioner indoor unit and an air conditioner outdoor unit, and the air conditioner indoor unit and the air conditioner outdoor unit complete refrigeration and heating circulation of the air conditioner through effective matching operation, so that cold and heat regulation of indoor temperature is realized. The refrigeration system of the air conditioner can be realized by utilizing a compression refrigeration cycle, and the compression refrigeration cycle realizes heat transfer by utilizing the compression phase change cycle of a refrigerant in a compressor, a condenser, an evaporator and a throttling device. The refrigerating system can also be provided with a refrigerant flow direction reversing device to change the flow direction of the refrigerant, so that the heat exchange assembly of the indoor unit can be alternately used as an evaporator or a condenser to realize the refrigerating or heating function.

The self-cleaning process of the air conditioner comprises a condensation stage, a frosting stage and a defrosting stage. When the self-cleaning function is carried out, in a condensation stage, the fan brings water near the heat exchanger to be cleaned to the surface of the heat exchanger so as to condense the heat exchanger; in the frosting stage, the condensation on the surface of the heat exchanger picks up the deposited dust attached to the surface of the heat exchanger in the frosting process; in the defrosting stage, frost mixed with deposited ash is melted, and the deposited ash is carried away from the surface of the heat exchanger along with melted frost water to finish the self-cleaning of the heat exchanger.

However, after the air conditioner is cleaned in the above manner, water stains and dirt are left on the heat exchanger, if the water stains and the dirt are accumulated for a long time, bacteria on the fins can grow transversely and generate peculiar smell, and the peculiar smell enters a room along with air conditioning wind. Because the air conditioner can effectively sterilize in an environment of 56 ℃ for more than 30 minutes, the air conditioner dries the indoor heat exchanger by utilizing refrigerant heating, and controls the fan motor to operate at low power, so that the indoor heat exchanger cannot generate overload protection due to overhigh temperature, however, the method can cause the temperature of the front end of the indoor heat exchanger to reach 56 ℃, the temperature of the indoor heat exchanger can be gradually reduced along the flowing direction of the refrigerant, and the temperature can not reach the 56 ℃ standard, and the overload protection risk of the indoor heat exchanger can be increased due to long-time operation, and the indoor heat exchanger cannot be maintained for more than 30 minutes.

In order to solve the above problems, an embodiment of a first aspect of the present invention provides a method for controlling an air conditioner to perform self-cleaning and drying, which can achieve effective sterilization and can avoid overload protection of an indoor heat exchanger due to an excessive temperature.

In the embodiment of the invention, the air conditioner comprises an indoor unit of the air conditioner, the indoor unit of the air conditioner comprises an indoor unit shell and a plurality of indoor heat exchange assemblies arranged in the indoor unit shell, a plurality of air supply outlets can be arranged on the indoor unit shell, the indoor heat exchange assemblies are arranged corresponding to the air supply outlets, and each indoor heat exchange assembly comprises an indoor heat exchanger, an indoor fan and an electronic throttling element connected with the indoor heat exchanger.

As shown in fig. 1, taking an example that the air conditioner includes two indoor heat exchange assemblies therein, when the air conditioner is in a heating mode, a refrigerant is compressed by a compressor 1 and then divided into two parts by a four-way valve 2, a first part enters a first indoor heat exchanger 71 for condensation and heat dissipation, then flows to the outdoor after passing through a first electronic throttling element 61, the other part is condensed and heat dissipation by a second indoor heat exchanger 72, then flows to the outdoor after passing through a second electronic throttling element 62 and then is converged with the first part, and is subjected to throttling and pressure reduction by an outdoor electronic throttling element 5 and evaporated in an outdoor heat exchanger 3, and the evaporated gaseous refrigerant returns to the compressor 1 by the four-way valve assembly 2, so that a heating cycle process is completed, and the indoor heat exchanger is dried and sterilized by using a refrigerant.

Fig. 2 is a flowchart illustrating a method for controlling a self-cleaning drying method of an air conditioner according to an embodiment of the present invention, and as shown in fig. 2, the method for controlling a self-cleaning drying method of an air conditioner according to an embodiment of the present invention at least includes steps S1-S3.

And step S1, detecting a self-cleaning drying instruction, and controlling the air conditioner to operate in a heating mode.

In an embodiment, the self-cleaning program ending instruction may be used as a self-cleaning drying instruction, that is, the air conditioner may automatically enter a self-cleaning drying mode after cleaning the indoor heat exchanger through the condensed water, or a user may send the self-cleaning drying instruction to the air conditioner through the mobile terminal, and the controller in the air conditioner controls the air conditioner to enter a heating mode according to the self-cleaning drying instruction, so as to perform drying and sterilization treatment on the indoor heat exchanger.

Step S2, controlling the electronic throttle of any one of the indoor heat exchange assemblies to a first drying protection opening, controlling the indoor fan of any one of the indoor heat exchange assemblies to pause, and controlling the electronic throttle of the other indoor heat exchange assemblies except any one of the indoor heat exchange assemblies to a second drying protection opening, where the second drying protection opening is greater than the first drying protection opening.

In the embodiment, effective sterilization can be performed in an environment of 56 ℃ for more than 30 minutes, but the temperature of the indoor heat exchanger is gradually reduced along the flowing direction of the refrigerant, so that the front end of the indoor heat exchanger can reach 56 ℃ but the rear end of the indoor heat exchanger can not reach the 56 ℃ standard. And if the indoor heat exchanger runs for a long time, the overload protection risk of the indoor heat exchanger is increased, and the indoor heat exchanger cannot be maintained for more than 30 minutes. Therefore, in the method of the embodiment of the invention, in the self-cleaning drying process, the controller controls the electronic throttle of any one of the indoor heat exchange assemblies to the first drying protection opening degree so as to reduce the refrigerant quantity in the indoor heat exchanger corresponding to the indoor heat exchange assembly, reduce the refrigerant flow rate, and control the indoor fan corresponding to the indoor heat exchange assembly to stop running, so that the refrigerant heat dissipation of the indoor heat exchanger corresponding to the indoor heat exchange assembly is reduced, therefore, in the drying and sterilizing process of any one indoor heat exchange assembly, the temperature of the indoor heat exchanger cannot be reduced due to the flowing of the refrigerant, the temperature of the indoor heat exchanger can be ensured to be continuously increased, and the temperature of the whole indoor heat exchanger can reach the sterilizing temperature. Meanwhile, in the process of drying and sterilizing any one indoor heat exchange assembly, the controller also controls the electronic throttling elements of other indoor heat exchange assemblies except any one indoor heat exchange assembly in the plurality of indoor heat exchange assemblies to reach a second drying protection opening degree, and the second drying protection opening degree is larger than the first drying protection opening degree, so that the flow of the refrigerant in the other indoor heat exchange assemblies is increased, the pressure of the refrigerant in the air conditioner is unloaded, and the overload protection caused by the temperature rise due to the fact that the fan in any one indoor heat exchange assembly stops running is avoided.

That is, according to the method of the embodiment of the present invention, in the self-cleaning drying process of the plurality of indoor heat exchange assemblies, one of the indoor heat exchange assemblies is dried and sterilized, the drying protection opening degree of the electronic throttling element in the indoor heat exchange assembly is controlled to be reduced, and the corresponding indoor fan is turned off, so as to reduce the flow rate of the refrigerant and reduce the heat dissipation capacity of the refrigerant, and ensure that the temperature of the whole indoor heat exchanger in the indoor heat exchange assembly can be continuously raised to reach the sterilization temperature, meanwhile, the other indoor heat exchange assemblies normally perform the heating mode, and the refrigerant flow rates of the other indoor heat exchange assemblies are increased by increasing the drying protection opening degree of the electronic throttling element, so as to unload the refrigerant pressure in the air conditioner, thereby avoiding the overload protection risk of the indoor heat exchanger. Therefore, according to the control mode of the embodiment of the invention, under the condition that the air conditioner operates normally, the aim of drying and sterilizing the indoor heat exchanger can be realized, and the overload protection of the indoor heat exchanger can be prevented.

And step S3, the temperature of the indoor heat exchanger of any indoor heat exchange assembly reaches the sterilization temperature, and the drying time is accumulated to the preset drying time.

In an embodiment, in the self-cleaning drying process, when the temperature of the indoor heat exchanger of any one indoor heat exchange assembly reaches the sterilization temperature, the indoor heat exchanger is controlled to maintain the sterilization temperature for a preset drying time period, so that the indoor heat exchanger is effectively sterilized. After the indoor heat exchanger of any indoor heat exchange assembly completes the drying and sterilizing process, the controller can switch the control to other indoor heat exchange assemblies until all indoor heat exchange assemblies in the air conditioner complete the drying and sterilizing treatment, so that the self-cleaning drying process of the indoor heat exchanger is completed, and bacteria accumulated on the indoor heat exchanger are effectively prevented from being blown into the room.

In an embodiment, according to the method of the embodiment of the present invention, for a plurality of indoor heat exchange assemblies, a user may set, through a mobile terminal, a sequence for performing drying and sterilization on the plurality of indoor heat exchange assemblies, or may default a set of sequence for performing drying and sterilization on the plurality of indoor heat exchange assemblies, so that after the air conditioner enters a heating mode, the controller sequentially performs drying and sterilization on the indoor heat exchangers of the plurality of indoor heat exchange assemblies according to the set sequence or the default sequence, or the user may select to perform drying and sterilization on the indoor heat exchanger of one or more indoor heat exchange assemblies of the plurality of indoor heat exchange assemblies, which is more flexible and various.

According to the method for controlling the self-cleaning drying of the air conditioner, when the self-cleaning drying is carried out, the air conditioner operates in a heating mode, an electronic throttling element of any one indoor heat exchange assembly in a plurality of indoor heat exchange assemblies is controlled to reach a first drying protection opening degree, the corresponding indoor fan is controlled to pause to operate, so that the flow velocity of a refrigerant is reduced, the heat dissipation of the refrigerant in the indoor heat exchanger is reduced, the temperature of the whole indoor heat exchanger can be continuously increased and reaches a sterilization temperature, the drying and sterilization of the indoor heat exchanger are realized, meanwhile, electronic throttling elements of other indoor heat exchange assemblies except any one indoor heat exchange assembly in the plurality of indoor heat exchange assemblies are controlled to reach a second drying protection opening degree, the second drying protection opening degree is larger than the first drying protection opening degree, so that the pressure of the refrigerant in the air conditioner is relieved, and overload protection caused by the temperature increase due to the stop of the operation of the indoor fan of any one indoor heat exchange assembly is prevented, by the control mode, the temperature of the indoor heat exchanger of any indoor heat exchange assembly reaches the sterilization temperature, and the preset drying time is maintained. Therefore, the method of the embodiment of the invention can achieve the effect of effectively sterilizing the indoor heat exchanger and avoid the risk of overload protection of the indoor heat exchanger under the condition that the air conditioner keeps normal functional operation.

In an embodiment, as shown in fig. 1, the air conditioner may be provided with two indoor heat exchange assemblies, namely, a first indoor heat exchange assembly and a second indoor heat exchange assembly. When the self-cleaning drying function is carried out, the electronic throttling element of the first indoor heat exchange assembly is firstly controlled to reach the first drying protection opening, the indoor fan of the first indoor heat exchange assembly is controlled to pause, and the electronic throttling element of the second indoor heat exchange assembly is controlled to reach the second drying protection opening, so that the indoor heat exchanger of the first indoor heat exchange assembly is dried. And then after the temperature of the indoor heat exchanger of the first indoor heat exchange assembly reaches the sterilization temperature and is maintained for a preset drying time, controlling the electronic throttling element of the second indoor heat exchange assembly to reach the first drying protection opening degree, controlling the indoor fan of the second indoor heat exchange assembly to pause, controlling the electronic throttling element of the first indoor heat exchange assembly to reach the second drying protection opening degree, drying the indoor heat exchanger of the second indoor heat exchange assembly, completing the self-cleaning drying process, and effectively preventing bacteria accumulated on the indoor heat exchanger from blowing into the room.

In an embodiment, the first drying protection opening is smaller than the heating mode opening to reduce the refrigerant quantity of the indoor heat exchanger and reduce the refrigerant flow rate; and the second drying protection opening degree is larger than or equal to the heating mode opening degree, so that the flow of the refrigerant is increased and the pressure of the refrigerant is unloaded under the condition that the indoor heat exchanger normally operates in the heating mode.

In an embodiment, 30 ≦ first drying protection opening ≦ 100, for example, the first drying protection opening may be 30, 50, 70, etc., 200 ≦ second drying protection opening ≦ 480, for example, the second drying protection opening may be 300, 350, 430, etc.

In the embodiment, as the sterilization can be effectively carried out in the environment of 56 ℃ for more than 30 minutes, the sterilization temperature in the embodiment of the invention is not less than 56 ℃, and the preset drying time is not less than 30 minutes.

In an embodiment, the electronic throttle may be an electronic expansion valve.

Taking an example of arranging two indoor heat exchange assemblies in the air conditioner, the first indoor heat exchange assembly includes a first indoor heat exchanger, a first electronic expansion valve and a first indoor fan, and the second indoor heat exchange assembly includes a second indoor heat exchanger, a second electronic expansion valve and a second indoor fan. The method for controlling the self-cleaning drying of the air conditioner according to the embodiment of the invention is described in detail with reference to fig. 3, and the specific process is as follows.

And step S4, starting a heating mode of the air conditioner aiming at the self-cleaning drying function of the first indoor heat exchanger. The process advances to step S5.

In step S5, the opening degree of the first electronic expansion valve is controlled to 30 to 100, the first indoor fan stops operating, and the process proceeds to step S6.

Step S6, the opening of the second electronic expansion valve is controlled to 200-.

In step S7, it is determined whether the first indoor heat exchanger temperature has reached 56 ℃. If not, continuing to maintain operation and controlling the temperature of the first indoor heat exchanger to rise; if the temperature reaches the preset temperature, the temperature is kept for more than 30 minutes in the mode, and the sterilization effect is achieved. The process advances to step S8.

And step S8, controlling and switching to the second indoor heat exchanger, and executing the same process to achieve the effect of sterilizing the second indoor heat exchanger.

And step S9, after the two indoor heat exchangers finish the drying and sterilizing functions, the operation mode is exited.

According to the steps, under the condition that the air conditioner keeps normal functional operation, the indoor heat exchanger is dried and sterilized, the indoor heat exchanger can reach more than 56 ℃ and is kept for more than 30 minutes, sterilization is effectively achieved, and overload protection is not generated.

A second aspect of the present invention provides a non-transitory computer storage medium, on which a computer program is stored, where the computer program is executed to implement the method for controlling self-cleaning drying of an air conditioner provided in the foregoing embodiments.

An air conditioning indoor unit according to an embodiment of the present invention is provided, and as shown in fig. 4, the air conditioning indoor unit according to the embodiment of the present invention includes an indoor unit casing 20, a plurality of indoor heat exchange assemblies 10, and a controller 9.

The indoor heat exchange assemblies 10 are arranged in an indoor unit shell 20, and each indoor heat exchange assembly 10 comprises an indoor heat exchanger 7, an indoor fan 8 and an electronic throttling element 6 connected with the indoor heat exchanger 7. The controller 9 is configured to control an air conditioner to operate in a heating mode when a self-cleaning drying instruction is detected, and control the electronic throttling element 6 of any one of the indoor heat exchange assemblies 10 to a first drying protection opening degree, control the indoor fan 8 of any one of the indoor heat exchange assemblies to pause, and control the electronic throttling elements 6 of other indoor heat exchange assemblies except any one of the indoor heat exchange assemblies 10 to a second drying protection opening degree, where the temperature of the indoor heat exchanger 7 of any one of the indoor heat exchange assemblies reaches a sterilization temperature, accumulate drying time to preset drying time, and the second drying protection opening degree is greater than the first drying protection opening degree.

According to the air conditioner indoor unit of the embodiment of the invention, after receiving the self-cleaning drying instruction, the controller 9 controls the air conditioner to operate in the heating mode, further controls the electronic throttling element 6 of any one indoor heat exchange assembly 10 in the plurality of indoor heat exchange assemblies 10 to reach the first drying protection opening, controls the corresponding indoor fan 8 to operate temporarily to reduce the flow rate of the refrigerant and reduce the heat dissipation of the refrigerant in the indoor heat exchanger 7, so that the temperature of the whole indoor heat exchanger 7 can be continuously increased and reach the sterilization temperature, the purpose of drying and sterilizing the indoor heat exchanger 7 is realized, and simultaneously controls the electronic throttling elements 6 of other indoor heat exchange assemblies except any one indoor heat exchange assembly 10 in the plurality of indoor heat exchange assemblies 10 to reach the second drying protection opening, so as to unload the pressure of the refrigerant in the air conditioner and prevent the overload protection caused by the temperature increase due to the stop of the operation of the indoor fan 8 of any one indoor heat exchange assembly 10, until the temperature of the indoor heat exchanger 7 of any one indoor heat exchange assembly 10 reaches the sterilization temperature, and the drying time is controlled to the preset drying time, therefore, the air conditioner of the embodiment of the invention can achieve the effect of effectively sterilizing the indoor heat exchanger 7 and avoid the risk of overload protection of the indoor heat exchanger 7 under the condition of keeping normal functional operation.

In an embodiment, two indoor heat exchange assemblies 10, namely a first indoor heat exchange assembly and a second indoor heat exchange assembly, may be disposed in the air conditioner, the first indoor heat exchange assembly includes a first indoor heat exchanger, a first electronic expansion valve and a first indoor fan, and the second indoor heat exchange assembly includes a second indoor heat exchanger, a second electronic expansion valve and a second indoor fan. For example, fig. 5 is a schematic structural diagram of an air outlet of an indoor unit of an air conditioner, the air conditioner adopts a double-fan double-heat exchanger form to achieve the effect of air outlet in two side partitions, and the two indoor heat exchangers and the two indoor fans can be controlled in a partition manner to achieve different functions and effects, so as to achieve diversification of functions. As shown in fig. 4, a first air supply outlet and a second air supply outlet are arranged on both sides of the indoor unit casing 20; a first air duct 11 communicated with the first air supply outlet and a second air duct 12 communicated with the second air supply outlet are arranged in the indoor unit shell 20, and an air return opening 13 is arranged below the indoor unit shell 20; a first indoor fan 81 and a first indoor heat exchanger 71 are provided in the first air duct 11, and a second indoor fan 82 and a second indoor heat exchanger 72 are provided in the second air duct 12.

The following describes the self-cleaning drying process of the air conditioner in an embodiment of the present invention in detail with reference to fig. 1.

As shown in fig. 1, the first indoor heat exchange assembly includes a first indoor heat exchanger 71, a first electronic throttle 61, and a first indoor fan 81, and the second indoor heat exchange assembly includes a second indoor heat exchanger 72, a second electronic throttle 62, and a second indoor fan 82.

When the air conditioner performs the self-cleaning drying function, the controller 9 controls the first electronic throttling element 61 connected with the first indoor heat exchanger 71 to a first drying protection opening degree and controls the first indoor fan 81 to pause, controls the second electronic throttling element 62 connected with the second indoor heat exchanger 72 to a second drying protection opening degree at the moment so as to dry the first indoor heat exchanger 71, controls the second electronic throttling element 62 connected with the second indoor heat exchanger 72 to the first drying protection opening degree and controls the second indoor fan 82 to pause after the temperature of the first indoor heat exchanger 71 reaches the sterilization temperature and maintains the preset drying time period, controls the first electronic throttling element 61 connected with the first indoor heat exchanger 71 to the second drying protection opening degree and accumulates the drying time period to the preset drying time period when the temperature of the second indoor heat exchanger 72 reaches the sterilization temperature, to dry the second indoor heat exchanger 72.

In summary, according to the air conditioner of the embodiment of the present invention, in the self-cleaning drying process of the multiple indoor heat exchange assemblies 10, the drying protection opening degree of the electronic throttle 6 in any one of the indoor heat exchange assemblies is controlled to decrease, and the corresponding indoor fan 8 is turned off, so as to reduce the flow rate of the refrigerant, reduce the heat dissipation capacity of the refrigerant, ensure that the temperature of the whole indoor heat exchanger 7 in the indoor heat exchange assembly 10 can continuously rise and reach the sterilization temperature, and at the same time, the other indoor heat exchange assemblies 10 are controlled to perform the normal heating mode, and the drying protection opening degrees of the electronic throttle 6 are controlled to increase, and the refrigerant flow rates of the other indoor heat exchange assemblies 10 are increased, so as to unload the refrigerant pressure in the air conditioner, and avoid the risk of overload protection of the indoor heat exchanger 7. Therefore, according to the control mode of the embodiment of the invention, under the condition that the air conditioner operates normally, the purposes of drying and sterilizing the indoor heat exchanger 7 can be realized, and overload protection caused by overhigh temperature of the indoor heat exchanger 7 can be prevented.

In the description of this specification, any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of custom logic functions or processes, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.

The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.

It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.

In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.

The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.