CN111237930A

CN111237930A - Air conditioner, control method and device thereof, storage medium and processor

Info

Publication number: CN111237930A
Application number: CN202010100336.0A
Authority: CN
Inventors: 吴俊鸿; 田雅颂; 夏光辉; 梁博; 王现林; 廖敏; 连彩云; 翟振坤; 梁之琦; 周金声; 徐小魏; 熊绍森
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-02-18
Filing date: 2020-02-18
Publication date: 2020-06-05

Abstract

The application provides an air conditioning device, a control method and a device thereof, a storage medium and a processor, the air conditioning device comprises an indoor unit and an outdoor unit, the indoor unit comprises a first heat exchanger, the outdoor unit comprises a four-way valve, a compressor and a second heat exchanger, the compressor comprises an air inlet and an air outlet, the air inlet is communicated with the first end of the first heat exchanger or the first end of the second heat exchanger through the four-way valve, the air outlet is communicated with the first end of the second heat exchanger or the first end of the first heat exchanger through the four-way valve, and the air conditioning device further comprises: the first control assembly is positioned on the first pipeline and used for controlling the on-off of the first pipeline; and one end of the third pipeline is connected with a branch between the first control assembly and the four-way valve, and the other end of the first pipeline is connected with the second pipeline. The air conditioning device can enable the refrigerant to form a defrosting cycle in the outdoor unit through the first control assembly, enable the high-temperature refrigerant to quickly melt a frost layer, improve the defrosting effect and reduce the defrosting time.

Description

Air conditioner, control method and device thereof, storage medium and processor

Technical Field

The present application relates to the field of air conditioners, and in particular, to an air conditioner, a control method and device thereof, a storage medium, and a processor.

Background

The existing air conditioner adopts a heat pump type air conditioner, the condition of frosting can occur outside the air conditioner in cold seasons, and the indoor comfort can be seriously influenced if the air conditioner is not defrosted for a long time.

The existing defrosting technology generally realizes the conversion from a heating mode to a refrigerating mode by reversing a four-way valve, and improves the temperature of outdoor machine pipes, thereby removing a frost layer. However, during such defrosting, the four-way valve is reversed to operate the refrigeration cycle. For human comfort, the indoor heat exchanger fan is usually stopped, and heat is taken from the indoor heat exchanger and the indoor environment during defrosting, so that the following defects exist:

(1) the defrosting time is long; (2) because the indoor fan is stopped and the cooling operation is carried out, the surface temperature of the heat exchanger is reduced more, and after the heating is recovered, the indoor unit can not blow hot air for a long time, so that the comfort is influenced; (3) the room temperature will decrease as heat needs to be removed from the indoor environment; (4) when defrosting is started and ended, the four-way valve is reversed, and large airflow sound exists.

In addition, in the hot gas bypass system of the air conditioning system in the prior art, firstly, since high-temperature refrigerant gas is condensed into liquid due to defrosting during defrosting, if the frost layer is thick, the discharge temperature and the suction superheat degree are continuously reduced along with defrosting, the possibility of liquid return of the compressor can be caused, the reliability service life of the compressor is directly threatened, and the longer defrosting time the frost layer is thicker, the greater the influence on the reliability of the compressor is, and liquid slugging is easily generated.

The above information disclosed in this background section is only for enhancement of understanding of the background of the technology described herein and, therefore, certain information may be included in the background that does not form the prior art that is already known in this country to a person of ordinary skill in the art.

Disclosure of Invention

The present application is directed to an air conditioner, a control method and apparatus thereof, a storage medium, and a processor, to solve the problem of the prior art that a defrosting time of an air conditioner is too long.

In order to achieve the above object, according to an aspect of the present application, there is provided an air conditioning apparatus including an indoor unit and an outdoor unit, the indoor unit includes a first heat exchanger, the outdoor unit includes a four-way valve, a compressor and a second heat exchanger, the compressor includes an air inlet and an air outlet, the air inlet is communicated with a first end of the first heat exchanger or a first end of the second heat exchanger through the four-way valve, the air outlet is communicated with a first end of the second heat exchanger or a first end of the first heat exchanger through the four-way valve, the air conditioning apparatus further includes: the first control assembly is positioned on a first pipeline and used for controlling the on-off of the first pipeline, and the first pipeline is a pipeline between the four-way valve and the first end of the first heat exchanger; and one end of the third pipeline is connected with a branch between the first control assembly and the four-way valve, the other end of the first pipeline is connected with a second pipeline, and the second pipeline is a pipeline between the second end of the first heat exchanger and the second end of the second heat exchanger.

Further, the air conditioning apparatus further includes: and the second control assembly is positioned on the second pipeline and/or the third pipeline and is used for controlling the on-off of the second pipeline and/or controlling the on-off of the second heat exchanger and the third pipeline.

Further, the four-way valve comprises a first port, a second port, a third port and a fourth port, wherein a first end of the first port is communicated with a first end of the first heat exchanger, a second end of the first port is communicated with a first end of the second port or a first end of the third port, a second end of the second port is communicated with an air inlet of the compressor, a second end of the third port is communicated with an air outlet of the compressor, a first end of the fourth port is communicated with a first end of the second port or a first end of the third port, the first control assembly comprises a first three-way valve, a first end of the first three-way valve is connected with a first end of the first heat exchanger, and a second end of the first three-way valve is connected with a first end of the first port; the second control assembly comprises a second three-way valve, a first end of the second three-way valve is connected with a second end of the first heat exchanger, a second end of the second three-way valve is connected with a second end of the second heat exchanger, and a third end of the second three-way valve is connected with a third end of the first three-way valve through a third pipeline.

Further, the four-way valve comprises a first port, a second port, a third port and a fourth port, wherein a first end of the first port is communicated with a first end of the first heat exchanger, a second end of the first port is communicated with a first end of the second port or a first end of the third port, a second end of the second port is communicated with an air inlet of the compressor, a second end of the third port is communicated with an air outlet of the compressor, a first end of the fourth port is communicated with a first end of the second port or a first end of the third port, the first control assembly comprises a first control valve, a first end of the first control valve is connected with a first end of the first heat exchanger, and a second end of the first control valve is connected with a first end of the first port; the second control assembly includes a second control valve located on the third line.

Further, the air conditioning apparatus further includes: a throttling device connected between the second end of the first heat exchanger and the second end of the second heat exchanger.

Further, the indoor unit further includes: and the heating device is positioned on one side of the first heat exchanger.

According to another aspect of the present application, there is provided a control method of an air conditioner, the control method including: under the condition that the outdoor unit of the air conditioning device needs defrosting, controlling a first control assembly to enable the first pipeline not to be communicated; controlling the first control assembly such that the first conduit remains unconnected; and maintaining the communication among the four-way valve, the third pipeline and the second heat exchanger.

Further, the air conditioning device further includes a second control assembly, the second control assembly is located on the second pipeline, the second control assembly is used for controlling the connection and disconnection of the second pipeline, and before the first control assembly is controlled to enable the first pipeline to be kept disconnected, the method further includes: and under the condition that the outdoor unit of the air conditioner needs defrosting, controlling the second control assembly to enable the second pipeline to be communicated.

Further, in a case where it is determined that the outdoor unit of the air conditioner needs defrosting, after controlling the first control assembly so that the first pipe is not connected, the method further includes: controlling the second control assembly so that the second conduit is not open.

Further, the air conditioning device further includes a second control assembly, the second control assembly is located on the third pipeline, the second control assembly is used for controlling the on-off of the third pipeline, and the communication among the four-way valve, the third pipeline and the second heat exchanger is maintained, including: controlling the second control assembly to communicate the third line.

Further, the four-way valve comprises a first port, a second port, a third port and a fourth port, wherein a first end of the first port is communicated with a first end of the first heat exchanger, a second end of the first port is communicated with a first end of the second port or a first end of the third port, a second end of the second port is communicated with an air inlet of the compressor, a second end of the third port is communicated with an air outlet of the compressor, a first end of the fourth port is communicated with a first end of the second port or a first end of the third port, the first control assembly comprises a first three-way valve, a first end of the first three-way valve is connected with a first end of the first heat exchanger, a second end of the first three-way valve is connected with a first end of the first port, and a second end of the first three-way valve is connected with one end of the third pipeline, controlling a first control assembly so that the first conduit is not in communication, comprising: controlling the first end of the first three-way valve to not communicate with the second end of the first three-way valve, controlling the first control assembly to maintain the first line not communicating, comprising: keeping a first end of the first three-way valve and a second end of the first three-way valve unconnected, keeping the four-way valve, the third pipeline, and the second heat exchanger connected, comprising: and controlling the first end of the first three-way valve to be communicated with the third end of the first three-way valve.

Further, the second control assembly includes a second three-way valve, a first end of the second three-way valve is connected to the second end of the first heat exchanger, a second end of the second three-way valve is connected to the second end of the second heat exchanger, a third end of the second three-way valve is connected to the third end of the first three-way valve, and the second control assembly is controlled to communicate the second pipeline when it is determined that the outdoor unit of the air conditioner needs defrosting, and the method further includes: controlling the first end of the second three-way valve and the second end of the second three-way valve to communicate, controlling the second control assembly so that the second line does not communicate, comprising: controlling a first end of the second three-way valve to communicate with a second end of the second three-way valve, and maintaining communication among the four-way valve, the third pipeline, and the second heat exchanger, including: and controlling the second end of the second three-way valve to be communicated with the third end of the second three-way valve.

Further, the four-way valve comprises a first port, a second port, a third port and a fourth port, wherein, a first end of the first port is in communication with a first end of the first heat exchanger, a second end of the first port is in communication with a first end of the second port or with a first end of the third port, a second end of the second port is communicated with an air inlet of the compressor, a second end of the third port is communicated with an air outlet of the compressor, the first end of the fourth port is in communication with the first end of the second port or the first end of the third port, the first control assembly comprises a first control valve, a first end of the first control valve is connected with a first end of the first heat exchanger, a second end of the first control valve is connected to a first end of the first port, controls a first control assembly so that the first line is not communicated, and includes: controlling the first end of the first control valve and the second end of the first control valve to not communicate, controlling the first control assembly such that the first line remains not communicated, comprising: and controlling the first end of the first control valve not to be communicated with the second end of the first control valve.

Further, the second control assembly includes a second control valve located on the third line to maintain communication among the four-way valve, the third line, and the second heat exchanger, including: controlling the first end of the second control valve to communicate with the second end of the second control valve.

Further, after controlling the first control assembly such that the first line remains unconnected, the control method further comprises, before maintaining communication between the four-way valve, the third line, and the second heat exchanger: and determining whether the refrigerant in the air conditioner is completely recycled to the outdoor unit.

Further, the determining whether the refrigerant in the air conditioner is completely recycled to the outdoor unit includes: after a preset state is kept for a preset time, determining that the refrigerant is completely recycled into the outdoor unit, wherein the preset state is a state that the first pipeline is not communicated and the second pipeline is communicated; or determining that the refrigerant is completely recycled into the outdoor unit under the condition that the temperature difference between a first temperature and a second temperature is less than a preset temperature, wherein the first temperature is the pipeline temperature of the indoor unit, and the second temperature is the indoor environment temperature.

Further, the indoor unit further includes a heating device and an inner fan, the heating device is located on one side of a first heat exchanger, the heating device is located between the inner fan and the first heat exchanger, and after it is determined that all refrigerants in the air conditioning device are recovered to the outdoor unit, the control method further includes: controlling the heating equipment to start to work; and controlling the inner fan to start.

Further, control interior fan opens work, include: determining the wind level of the inner fan according to the working power and/or the second temperature of the heating equipment, wherein the determined wind volume of the wind level is positively correlated with the working power and the second temperature respectively; and controlling the inner fan to work at the determined wind gear.

According to still another aspect of the present application, there is provided a control device of an air conditioning device, the control device including: the first control unit is used for controlling the first control assembly under the condition that the outdoor unit of the air conditioner needs defrosting, so that the first pipeline is not communicated; a second control unit for controlling the first control assembly such that the first conduit remains unconnected; and the third control unit is used for maintaining the communication among the four-way valve, the third pipeline and the second heat exchanger.

According to another aspect of the present application, there is provided a storage medium including a stored program, wherein the program executes any one of the control methods.

According to yet another aspect of the present application, there is provided a processor for executing a program, wherein the program executes any one of the control methods.

The technical scheme of the application, among the above-mentioned air conditioning equipment, including first control assembly and third pipeline, under the condition that the air conditioner needs the defrosting, at first control assembly control first pipeline disconnection, make the refrigerant income of first heat exchanger in the off-premises station, then first control assembly control first pipeline keeps disconnected, make the refrigerant after the heat transfer of second heat exchanger flow into the compressor and compress, the gaseous refrigerant of exhaust high temperature returns the second heat exchanger through the third pipeline, form the defrost cycle, make the high temperature refrigerant melt the frost layer fast, thereby improve the defrosting effect and reduce the defrost time, and, because in the refrigerant income off-premises station of first heat exchanger, avoid liquid refrigerant too much to get into the compressor in the first heat exchanger and produce the liquid hammer, and make more refrigerants carry out the defrost cycle, further reduce the defrost time.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:

fig. 1 shows a schematic structural diagram of an air conditioning apparatus according to an embodiment of the present application;

fig. 2 shows a schematic structural view of an air conditioning apparatus according to another embodiment of the present application;

fig. 3 illustrates a schematic structural view of an air conditioning device according to still another embodiment of the present application;

fig. 4 shows a schematic configuration diagram of an air conditioning apparatus according to still another embodiment of the present application;

fig. 5 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present application; and

fig. 6 shows a schematic diagram of a control apparatus of an air conditioner according to an embodiment of the present application.

Wherein the figures include the following reference numerals:

10. an indoor unit; 11. a first heat exchanger; 12. a heating device; 13. an inner fan; 20. an outdoor unit; 21. a second heat exchanger; 22. a four-way valve; 23. a compressor; 24. a first three-way valve; 25. a second three-way valve; 26. a first control valve; 27. a second control valve; 28. a throttling device; 30. a first shut-off valve; 40. a second shut-off valve.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.

As described in the background of the invention, in order to solve the problem that the defrosting time of the air conditioner in the related art is too long, according to an embodiment of the present application, there are provided an air conditioner, a control method and apparatus thereof, a storage medium, and a processor.

In an exemplary embodiment of the present application, there is provided an air conditioning apparatus, as shown in fig. 1 to 3, the air conditioner includes an indoor unit 10 and an outdoor unit 20, wherein the indoor unit 10 includes a first heat exchanger 11, the outdoor unit 20 includes a four-way valve 22, a compressor 23, and a second heat exchanger 21, the compressor 23 includes an air inlet and an air outlet, the air inlet is communicated with the first end of the first heat exchanger 11 or the first end of the second heat exchanger 21 through the four-way valve 22, the air outlet is communicated with the first end of the second heat exchanger 21 or the first end of the first heat exchanger 11 through the four-way valve 22, the air conditioning device also comprises a first control assembly and a third pipeline, wherein the first control assembly is positioned on the first pipeline, the first control assembly is used for controlling the on-off of the first pipeline, and the first pipeline is a pipeline between the four-way valve 22 and the first end of the first heat exchanger 11; one end of the third pipeline is connected to a branch between the first control unit and the four-way valve 22, and the other end of the first pipeline is connected to a second pipeline between the second end of the first heat exchanger 11 and the second end of the second heat exchanger 21.

In the air conditioning device, the first control assembly and the third pipeline are included, under the condition that the air conditioner needs defrosting, the first control assembly controls the first pipeline to be disconnected firstly, so that the refrigerant of the first heat exchanger is collected into the outdoor unit, then the first control assembly controls the first pipeline to be disconnected, the refrigerant after heat exchange of the second heat exchanger flows into the compressor to be compressed, the discharged high-temperature gas refrigerant returns to the second heat exchanger through the third pipeline, a defrosting cycle is formed, a frost layer is quickly melted by the high-temperature refrigerant, the defrosting effect is improved, the defrosting time is shortened, in addition, the refrigerant of the first heat exchanger is collected into the outdoor unit, the phenomenon that liquid refrigerant in the first heat exchanger excessively enters the compressor to generate liquid impact is avoided, more refrigerants are subjected to defrosting cycle, and the defrosting time is further shortened.

In an embodiment of the present application, the air conditioning apparatus further includes a second control assembly, where the second control assembly is located on the second pipeline and/or the third pipeline, and the second control assembly is configured to control on/off of the second pipeline and/or control on/off of the second heat exchanger and the third pipeline. Specifically, under the condition that the second control assembly is located on the second pipeline, under the condition that the air conditioner needs defrosting, the first control assembly controls the first pipeline to be disconnected at first, the second control assembly controls the second pipeline to be communicated, so that the refrigerant of the first heat exchanger is collected into the outdoor unit, then the first control assembly controls the first pipeline to be disconnected, the second control assembly controls the second pipeline to be disconnected, so that the refrigerant after heat exchange of the second heat exchanger flows into the compressor to be compressed, the discharged high-temperature gas refrigerant returns to the second heat exchanger through the third pipeline, a defrosting cycle is formed, so that the high-temperature refrigerant quickly melts a frost layer, and therefore the defrosting effect is improved and the defrosting time is shortened.

In one embodiment of the present invention, as shown in fig. 1, the four-way valve 22 includes a first port, a second port, a third port and a fourth port, wherein a first end of the first port is communicated with a first end of the first heat exchanger 11, a second end of the first port is communicated with a first end of the second port or a first end of the third port, a second end of the second port is communicated with an air inlet of the compressor 23, a second end of the third port is communicated with an air outlet of the compressor 23, a first end of the fourth port is communicated with a first end of the second port or a first end of the third port, the first control unit includes a first three-way valve, a first end of the first three-way valve 24 is connected with a first end of the first heat exchanger 11, and a second end of the first three-way valve 24 is connected with a first end of the first port; the second control means includes a second three-way valve 25, a first end of the second three-way valve 25 is connected to a second end of the first heat exchanger 11, a second end of the second three-way valve 25 is connected to a second end of the second heat exchanger 21, and a third end of the second three-way valve 25 is connected to a third end of the first three-way valve 24 through the third pipeline.

Specifically, under the condition that the air conditioner needs defrosting, a second end of a first three-way valve and a third end of the first three-way valve are not communicated with a first end of the first three-way valve, a first end of a second three-way valve is communicated with a second end of the second three-way valve, namely, a first pipeline and a third pipeline are disconnected, the second pipeline is communicated, so that a refrigerant of the first heat exchanger is collected into an outdoor unit, then the first end of the first three-way valve is communicated with the third end of the first three-way valve, the first end of the second three-way valve is communicated with the third end of the second three-way valve, the second end of a first port is communicated with the first end of a third port, the first end of a fourth port is communicated with the first end of the second port, namely, the first pipeline and the second pipeline are disconnected, so that the refrigerant after heat exchange of the second heat exchanger flows into a compressor to be compressed, and the discharged high-temperature gas refrigerant, and moreover, as the refrigerant of the first heat exchanger is collected into the outdoor unit, more refrigerants are subjected to defrosting circulation, and the defrosting time is further reduced.

In another embodiment of the present application, as shown in fig. 2, the four-way valve 22 includes a first port, a second port, a third port and a fourth port, wherein a first end of the first port communicates with a first end of the first heat exchanger 11, a second end of the first port communicates with a first end of the second port or with a first end of the third port, a second end of the second port communicates with an air inlet of the compressor 23, a second end of the third port communicates with an air outlet of the compressor 23, a first end of the fourth port communicates with a first end of the second port or with a first end of the third port, the first control assembly comprises a first three-way valve, a first end of the first three-way valve 24 is connected with a first end of the first heat exchanger 11, a second end of the first three-way valve 24 is connected to a first end of the first port, and a third end of the first three-way valve 24 is connected to the second line through the third line.

Specifically, under the condition that the air conditioner needs defrosting, a second end of a first three-way valve and a third end of the first three-way valve are not communicated with a first end of the first three-way valve, namely a first pipeline and a third pipeline are disconnected and communicated with a second pipeline, so that the refrigerant of a first heat exchanger is collected into an outdoor unit, a first end of the first three-way valve is communicated with the third end of the first three-way valve, a second end of a first port is communicated with a first end of a third port, and a first end of a fourth port is communicated with a first end of a second port, namely the first pipeline and the second pipeline are disconnected and communicated with the third pipeline, so that the refrigerant after heat exchange of the second heat exchanger flows into a compressor to be compressed, the discharged high-temperature gas refrigerant returns to the second heat exchanger through the third pipeline, a defrosting cycle is formed, so that the high-temperature refrigerant quickly melts a frost layer, thereby defrosting time is reduced, and, because the first heat exchanger is, more refrigerants are subjected to defrosting circulation, and defrosting time is further shortened.

In still another embodiment of the present invention, as shown in fig. 1, the four-way valve 22 includes a first port, a second port, a third port and a fourth port, wherein a first end of the first port communicates with a first end of the first heat exchanger 11, a second end of the first port communicates with a first end of the second port or with a first end of the third port, a second end of the second port communicates with an air inlet of the compressor 23, a second end of the third port communicates with an air outlet of the compressor 23, a first end of the fourth port communicates with a first end of the second port or with a first end of the third port, the first control unit includes a first control valve 26, a first end of the first control valve 26 is connected to the first end of the first heat exchanger 11, and a second end of the first control valve 26 is connected to the first end of the first port; the air conditioner further includes a second control valve 27, and the second control valve 27 is located in the third pipe.

Specifically, under the condition that the air conditioner needs defrosting, the first control valve is closed, namely the first pipeline is disconnected, the second pipeline is kept communicated, so that the refrigerant of the first heat exchanger is collected into the outdoor unit, then the first control valve is closed, the second control valve is opened, namely the first pipeline and the second pipeline are disconnected, only the third pipeline is communicated, so that the refrigerant after heat exchange of the second heat exchanger flows into the compressor to be compressed, the discharged high-temperature gas refrigerant returns to the second heat exchanger through the third pipeline, a defrosting cycle is formed, the high-temperature refrigerant quickly melts a frost layer, defrosting time is shortened, and more refrigerants are collected into the outdoor unit, so that defrosting cycle is carried out on more refrigerants, and defrosting time is further shortened.

More specifically, the first control valve and the second control valve are electromagnetic two-way valves, and of course, the first control valve and the second control valve are not limited to electromagnetic two-way valves, and those skilled in the art can select appropriate control valves according to actual situations.

It should be noted that, in the process of taking the refrigerant of the indoor unit into the outdoor unit, the second control valve controls the disconnection of the third pipeline, so that the refrigerant is prevented from flowing into the second pipeline through the third pipeline, the refrigerant of the indoor unit is conveniently taken into the outdoor unit through the second pipeline, the efficiency of taking in the refrigerant is accelerated, and the defrosting time is further reduced.

In an embodiment of the present application, as shown in fig. 1 to 3, the air conditioner further includes a throttling device 28, and the throttling device 28 is connected between the second end of the first heat exchanger 11 and the second end of the second heat exchanger 21. The throttling equipment is used for controlling the flow of the refrigerant, so that the circulating speed of the refrigerant between the first heat exchanger and the second heat exchanger is controlled, and the heat exchange effect of the first heat exchanger and the second heat exchanger is further ensured.

The throttling device may be a throttling valve, an electronic expansion valve or a capillary tube, but the throttling device is not limited thereto, and a person skilled in the art can select an appropriate throttling device according to actual conditions as long as throttling expansion can be realized.

In an embodiment of the present application, as shown in fig. 1 to 3, the indoor unit 10 further includes a heating device 12 located at one side of the first heat exchanger 11. In the defrosting process, the heating equipment can supply heat indoors, so that the indoor temperature is prevented from being reduced in the defrosting process, and the comfort of the air conditioner is improved.

In one embodiment of the present application, as shown in fig. 1 to 3, the air conditioner further includes a first shut-off valve 30 and a second shut-off valve 40, the first shut-off valve 30 is located on the second line, and the second shut-off valve 40 is located on the first line. Specifically, the first stop valve and the second stop valve are manual valves, and when the air conditioner is in normal operation, the first stop valve and the second stop valve are in a conducting state, and when equipment is maintained, a maintenance worker can manually close the first stop valve and the second stop valve, so that maintenance is facilitated.

The embodiment of the present application further provides a control method of an air conditioner, and it should be noted that the control method of the air conditioner according to the embodiment of the present application may be used to control the air conditioner according to the embodiment of the present application. The following describes a control method of an air conditioner according to an embodiment of the present application.

Fig. 5 is a flowchart of a control method of an air conditioner according to an embodiment of the present application, the control method including:

step S101, under the condition that the outdoor unit of the air conditioner needs defrosting, controlling a first control assembly to enable the first pipeline not to be communicated;

step S102, controlling the first control assembly to make the first pipeline keep disconnected;

and step S103, maintaining the communication among the four-way valve, the third pipeline and the second heat exchanger.

In the control method, under the condition that the outdoor unit of the air conditioner needs defrosting, the first control assembly controls the first pipeline to be disconnected firstly, so that the refrigerant of the first heat exchanger is collected into the outdoor unit, then the first control component controls the first pipeline to keep disconnected, the four-way valve, the third pipeline and the second heat exchanger are kept communicated, so that the refrigerant after heat exchange by the second heat exchanger flows into the compressor for compression, the discharged high-temperature gas refrigerant returns to the second heat exchanger through a third pipeline to form a defrosting cycle, so that the high-temperature refrigerant can quickly melt the frost layer, thereby improving the defrosting effect and reducing the defrosting time, and, the refrigerant of the first heat exchanger is collected into the outdoor unit, so that the liquid refrigerant in the first heat exchanger is prevented from entering the compressor too much to generate liquid impact, more refrigerants are subjected to defrosting circulation, and the defrosting time is further shortened.

In an embodiment of the application, the air conditioner further includes a second control component, the second control component is located on the second pipeline, the second control component is configured to control on/off of the second pipeline, and before controlling the first control component to keep the first pipeline not connected, the method further includes: and under the condition that the outdoor unit of the air conditioner needs defrosting, controlling the second control assembly to enable the second pipeline to be communicated. Specifically, under the condition that it is determined that the outdoor unit of the air conditioning device needs defrosting, the first control assembly is controlled to enable the first pipeline to be not communicated, and the second control assembly is controlled to enable the second pipeline to be communicated, so that the refrigerant of the first heat exchanger is collected into the outdoor unit, liquid slugging caused by excessive liquid refrigerant entering the compressor in the first heat exchanger is avoided, more refrigerants are subjected to defrosting circulation, and defrosting time is further shortened.

In an embodiment of the application, in a case that it is determined that an outdoor unit of an air conditioner needs defrosting, after controlling a first control module to make the first pipeline not connected, the method further includes: and controlling the second control assembly to make the second pipeline not communicated. Specifically, the first control assembly is controlled to enable the first pipeline to be not communicated, the second control assembly is controlled to enable the second pipeline to be not communicated, so that the refrigerant subjected to heat exchange through the second heat exchanger flows into the compressor to be compressed, the discharged high-temperature gas refrigerant returns to the second heat exchanger through the third pipeline, a defrosting cycle is formed, the high-temperature refrigerant quickly melts a frost layer, and therefore the defrosting effect is improved and the defrosting time is shortened.

In an embodiment of the present application, the air conditioner further includes a second control assembly, the second control assembly is located on the third pipeline, and the second control assembly is configured to control on/off of the third pipeline and maintain communication among the four-way valve, the third pipeline, and the second heat exchanger, and includes: and controlling the second control assembly to enable the third pipeline to be communicated. Specifically, the second control assembly is controlled to enable the third pipeline to be communicated, so that the refrigerant subjected to heat exchange through the second heat exchanger flows into the compressor to be compressed, the discharged high-temperature gas refrigerant returns to the second heat exchanger through the third pipeline, a defrosting cycle is formed, the high-temperature refrigerant quickly melts a frost layer, and then the defrosting effect is improved and the defrosting time is shortened.

In another embodiment of the present invention, as shown in fig. 1, the four-way valve 22 includes a first port, a second port, a third port and a fourth port, wherein a first end of the first port is communicated with a first end of the first heat exchanger 11, a second end of the first port is communicated with a first end of the second port or with a first end of the third port, a second end of the second port is communicated with an air inlet of the compressor 23, a second end of the third port is communicated with an air outlet of the compressor 23, a first end of the fourth port is communicated with a first end of the second port or with a first end of the third port, the first control unit includes a first three-way valve 24, a first end of the first three-way valve 24 is connected with a first end of the first heat exchanger 11, a second end of the first three-way valve 24 is connected with a first end of the first port, a second end of the first three-way valve is connected with an end of the third pipeline, controlling a first control assembly so that the first conduit is not in communication, comprising: controlling a first end of the first three-way valve 24 not to communicate with a second end of the first three-way valve 24; controlling the first control assembly so that the first conduit remains unconnected, comprising: maintaining a first end of the first three-way valve and a second end of the first three-way valve not in communication, and maintaining communication among the four-way valve, the third pipeline, and the second heat exchanger, includes: and controlling the first end of the first three-way valve 24 to communicate with the third end of the first three-way valve 24.

Specifically, a first end of a first three-way valve is controlled to be not communicated with a second end of a first three-way valve, namely, a first pipeline and a third pipeline are disconnected, the second pipeline is communicated, so that the refrigerant of the first heat exchanger is collected into the outdoor unit, the first end of the first three-way valve is kept not communicated with the second end of the first three-way valve, the first end of the first three-way valve is controlled to be communicated with the third end of the first three-way valve, namely, the first pipeline and the second pipeline are disconnected, the third pipeline is communicated, so that the refrigerant in the outdoor unit is only circulated in the outdoor unit, namely, the refrigerant after heat exchange through the second heat exchanger flows into a compressor to be compressed, the discharged high-temperature gas refrigerant returns to the second heat exchanger through the third pipeline to form a defrosting cycle, so that the high-temperature refrigerant quickly melts a frost layer, thereby reducing defrosting time, and more refrigerants are subjected to a defrosting cycle because the refrigerant of, further reducing defrost time.

In another embodiment of the present application, as shown in fig. 2, the second control unit includes a second three-way valve 25, a first end of the second three-way valve 25 is connected to a second end of the first heat exchanger 11, a second end of the second three-way valve 25 is connected to a second end of the second heat exchanger 21, a third end of the second three-way valve 25 is connected to a third end of the first three-way valve 24, and the first control unit is controlled so that the first pipeline is not connected when it is determined that the outdoor unit of the air conditioner needs defrosting, and the method further includes: controlling the first end of the second three-way valve 25 and the second end of the second three-way valve 25 not to be communicated, and controlling the second control assembly so that the second line is not communicated, includes: controlling the communication between the first end of the second three-way valve 25 and the second end of the second three-way valve 25 to maintain the communication among the four-way valve 22, the third line, and the second heat exchanger 21, includes: and controlling the second end of the second three-way valve 25 to communicate with the third end of the second three-way valve 25.

Specifically, a first end of a first three-way valve is controlled not to be communicated with a second end of a first three-way valve and a first end of a second three-way valve is controlled to be communicated with a second end of the second three-way valve, namely, the first pipeline and the third pipeline are disconnected and the second pipeline is communicated, so that the refrigerant of the first heat exchanger is collected into the outdoor unit, the first end of the first three-way valve is controlled to be communicated with a third end of the first three-way valve, the first end of the first three-way valve is controlled not to be communicated with a second end of the first three-way valve, the first end of the second three-way valve is controlled not to be communicated with a third end of the second three-way valve, namely, the first pipeline and the second pipeline are disconnected and the third pipeline is communicated, so that the refrigerant in the outdoor unit is only circulated in the outdoor unit, namely, the refrigerant after heat exchange through the second heat exchanger flows into, the discharged high-temperature gas refrigerant returns to the second heat exchanger through the third pipeline to form a defrosting cycle, so that the high-temperature refrigerant can quickly melt a frost layer, the defrosting time is shortened, and more refrigerants are subjected to the defrosting cycle because the refrigerant of the first heat exchanger is collected into the outdoor unit, so that the defrosting time is further shortened.

In an embodiment of the present application, as shown in fig. 1, in a case that it is determined that an outdoor unit of an air conditioner needs defrosting, the method further includes controlling a first control module so that the first pipeline is not connected, and the method further includes: the first end of the first three-way valve 24 is controlled not to communicate with the third end of the first three-way valve 24. Specifically, in the process of taking the refrigerant of the indoor unit into the outdoor unit, the first end of the first three-way valve is not communicated with the third end of the first three-way valve, so that the third pipeline is disconnected, the refrigerant is prevented from flowing into the second pipeline through the third pipeline, the refrigerant of the indoor unit is conveniently taken into the outdoor unit through the second pipeline, the efficiency of taking in the refrigerant is improved, and the defrosting time is further reduced.

In still another embodiment of the present invention, as shown in fig. 3, the four-way valve 22 includes a first port, a second port, a third port and a fourth port, wherein a first end of the first port is communicated with a first end of the first heat exchanger 11, a second end of the first port is communicated with a first end of the second port or with a first end of the third port, a second end of the second port is communicated with an air inlet of the compressor 23, a second end of the third port is communicated with an air outlet of the compressor 23, a first end of the fourth port is communicated with a first end of the second port or with a first end of the third port, the first control unit includes a first control valve 26, a first end of the first control valve 26 is connected with a first end of the first heat exchanger 11, a second end of the first control valve 26 is connected with a first end of the first port to control the first control unit, so that the first pipeline is not communicated, comprising: controlling a first end of said first control valve to not communicate with a second end of said first control valve, controlling said first control assembly to maintain said first line not communicating, comprising: controlling a first end of the first control valve to be not communicated with a second end of the first control valve.

Specifically, the first end of the first control valve and the second end of the first control valve are controlled not to be communicated, that is, the first pipeline is disconnected, so that the refrigerant of the first heat exchanger is collected into the outdoor unit, then the first end of the first control valve and the second end of the first control valve are continuously controlled not to be communicated, so that the first pipeline is kept not communicated, so that the refrigerant after heat exchange of the second heat exchanger flows into the compressor to be compressed, the discharged high-temperature gas refrigerant returns to the second heat exchanger through the third pipeline, a defrosting cycle is formed, so that the high-temperature refrigerant quickly melts a frost layer, and defrosting time is shortened.

In one embodiment of the present application, as shown in fig. 4, the air conditioner further includes a second control valve 27, wherein the second control valve 27 is located on the third pipeline, and maintains communication among the four-way valve, the third pipeline, and the second heat exchanger, and includes: a first end of the first control valve 26 is controlled to communicate with a second end of the first control valve 26.

Specifically, the first end of the first control valve is controlled to be communicated with the second end of the first control valve, namely, the third pipeline is kept communicated, so that the refrigerant subjected to heat exchange by the second heat exchanger flows into the compressor to be compressed, the discharged high-temperature gas refrigerant returns to the second heat exchanger through the third pipeline, a defrosting cycle is formed, the high-temperature refrigerant quickly melts a frost layer, defrosting time is shortened, and more refrigerants are subjected to defrosting cycle because the refrigerant of the first heat exchanger is collected into the outdoor unit, and the defrosting time is further shortened.

In a preferred embodiment of the present invention, as shown in fig. 4, in a case where it is determined that the outdoor unit of the air conditioner needs defrosting, the control unit controls the first control unit so that the first pipe does not communicate with the outdoor unit, and further includes: the first end of the second control valve 27 is not communicated with the second end of the second control valve 27. Specifically, in the process of taking the refrigerant of the indoor unit into the outdoor unit, the first stop valve controls the third pipeline to be disconnected, the refrigerant is prevented from flowing into the second pipeline through the third pipeline, the refrigerant of the indoor unit is conveniently taken into the outdoor unit through the second pipeline, the efficiency of taking in the refrigerant is accelerated, and therefore defrosting time is further shortened.

In an embodiment of the present application, after controlling the first control assembly to keep the first pipeline disconnected and before keeping the four-way valve, the third pipeline and the second heat exchanger connected, the control method further includes: and determining whether the refrigerant in the air conditioner is completely recycled to the outdoor unit. In the control method, the refrigerants in the air conditioner device are determined to be all recycled to the outdoor unit, so that more refrigerants can be ensured to circulate in the outdoor unit in the defrosting process, the defrosting efficiency is further improved, and the defrosting time is shortened.

In an embodiment of the present application, the determining whether the refrigerant in the air conditioner is completely recycled to the outdoor unit includes: after keeping a preset state for a preset time, determining that the refrigerant is completely recycled into the outdoor unit, wherein the preset state is a state that the first pipeline is not communicated and the second pipeline is communicated; or determining that the refrigerant is completely recycled into the outdoor unit when a temperature difference between a first temperature and a second temperature is less than a predetermined temperature, wherein the first temperature is a pipeline temperature of the indoor unit, and the second temperature is an indoor environment temperature. Specifically, the temperature of the pipeline of the indoor unit is changed by the refrigerant in the pipeline of the indoor unit through circulating heat exchange, so that the difference between the first temperature and the second temperature is large, and under the condition that the temperature difference between the first temperature and the second temperature is smaller than the preset temperature, it is indicated that the refrigerant does not circulate and exchange heat in the pipeline of the indoor unit basically, and the process of recovering the refrigerant into the outdoor unit can be determined.

In an embodiment of the application, as shown in fig. 1 to 3, the indoor unit 10 further includes a heating device 12 and an inner fan 13, the heating device 12 is located at one side of the first heat exchanger 11, the heating device 12 is located between the inner fan 13 and the first heat exchanger 11, so that outlet air of the inner fan is heated by the heating device and then discharged through the air deflector, and after it is determined that a process of recovering a refrigerant in the air conditioning apparatus into the outdoor unit is completed, the control method further includes: controlling the heating device 12 to start; and controlling the internal fan 13 to start. In the defrosting process, the air outlet of the inner fan is heated by the heating equipment and then discharged through the air guide plate, so that heat supply to the indoor space is realized, the indoor temperature reduction in the defrosting process is avoided, and the comfort of the air conditioner is improved.

In an embodiment of this application, the work is opened to the fan in controlling above-mentioned, include: determining the wind level of the inner fan according to the working power and/or the second temperature of the heating equipment, wherein the determined wind volume of the wind level is respectively and positively correlated with the working power and the second temperature; and controlling the inner fan to work with the determined wind gear.

Specifically, the wind level of the inner fan is determined according to the working power and the second temperature of the heating device, the wind level a, the wind level B and the wind level C are divided according to the rotation speed of the outer fan from low to high, and the corresponding relationship between the working power and the second temperature of the heating device and the wind level is shown in table 1.

TABLE 1

The embodiment of the present application further provides a control device of an air conditioner, and it should be noted that the control device of the air conditioner of the embodiment of the present application may be used to execute the control method of the air conditioner provided in the embodiment of the present application. The following describes a control device for an air conditioning device according to an embodiment of the present application.

Fig. 6 is a schematic diagram of a control device of an air conditioning device according to an embodiment of the present application, the control device including:

a first control unit 100 for controlling the first control unit to make the first pipeline not connected when it is determined that the outdoor unit of the air conditioner needs defrosting;

a second control unit 200 for controlling the first control assembly such that the first line is not connected;

and a third control unit 300 for maintaining communication among the four-way valve, the third pipeline, and the second heat exchanger.

In the control device, a first control unit controls a first control assembly to disconnect a first pipeline under the condition that the outdoor unit of the air conditioning device needs defrosting, so that the refrigerant of a first heat exchanger is collected into the outdoor unit, a second control unit controls the first control assembly to disconnect the first pipeline, a third control unit keeps communication among the four-way valve, the third pipeline and the second heat exchanger, so that the refrigerant after heat exchange of the second heat exchanger flows into a compressor to be compressed, the discharged high-temperature gas refrigerant returns to the second heat exchanger through the third pipeline to form a defrosting cycle, so that the high-temperature refrigerant quickly melts a frost layer, the defrosting effect is improved, the defrosting time is shortened, and the refrigerant of the first heat exchanger is collected into the outdoor unit, so that liquid refrigerant in the first heat exchanger is prevented from excessively entering the compressor to generate liquid impact and more refrigerants are subjected to defrosting cycle, further reducing defrost time.

In an embodiment of the present application, the air conditioner further includes a second control component, the second control component is located on the second pipeline, and the second control component is configured to control on/off of the second pipeline, and the air conditioner further includes a fourth control unit, where the fourth control unit is configured to control the second control component so that the second pipeline is communicated when it is determined that an outdoor unit of the air conditioner needs defrosting before the first control component is controlled so that the first pipeline is not communicated. Specifically, under the condition that it is determined that the outdoor unit of the air conditioning device needs defrosting, the first control assembly is controlled to enable the first pipeline to be not communicated, and the second control assembly is controlled to enable the second pipeline to be communicated, so that the refrigerant of the first heat exchanger is collected into the outdoor unit, liquid slugging caused by excessive liquid refrigerant entering the compressor in the first heat exchanger is avoided, more refrigerants are subjected to defrosting circulation, and defrosting time is further shortened.

In an embodiment of the application, the apparatus further includes a fifth control unit, where the fifth control unit is configured to control the first control component to make the first pipeline disconnected and then control the second control component to make the second pipeline disconnected, when it is determined that the outdoor unit of the air conditioner needs defrosting. Specifically, the first control assembly is controlled to enable the first pipeline to be not communicated, the second control assembly is controlled to enable the second pipeline to be not communicated, so that the refrigerant subjected to heat exchange through the second heat exchanger flows into the compressor to be compressed, the discharged high-temperature gas refrigerant returns to the second heat exchanger through the third pipeline, a defrosting cycle is formed, the high-temperature refrigerant quickly melts a frost layer, and therefore the defrosting effect is improved and the defrosting time is shortened.

In an embodiment of the application, the air conditioner further includes a second control assembly, the second control assembly is located on the third pipeline, the second control assembly is used for controlling on/off of the third pipeline, the third control unit includes a first control module, and the first control module is used for controlling the second control assembly so as to enable the third pipeline to be communicated. Specifically, the second control assembly is controlled to enable the third pipeline to be communicated, so that the refrigerant subjected to heat exchange through the second heat exchanger flows into the compressor to be compressed, the discharged high-temperature gas refrigerant returns to the second heat exchanger through the third pipeline, a defrosting cycle is formed, the high-temperature refrigerant quickly melts a frost layer, and then the defrosting effect is improved and the defrosting time is shortened.

In another embodiment of the present invention, as shown in fig. 1, the four-way valve 22 includes a first port, a second port, a third port and a fourth port, wherein a first end of the first port is communicated with a first end of the first heat exchanger 11, a second end of the first port is communicated with a first end of the second port or with a first end of the third port, a second end of the second port is communicated with an air inlet of the compressor 23, a second end of the third port is communicated with an air outlet of the compressor 23, a first end of the fourth port is communicated with a first end of the second port or with a first end of the third port, the first control unit includes a first three-way valve 24, a first end of the first three-way valve 24 is connected with a first end of the first heat exchanger 11, a second end of the first three-way valve 24 is connected with a first end of the first port, a second end of the first three-way valve is connected with an end of the third pipeline, the first control unit includes a second control module for controlling the first end of the first three-way valve 24 not to be communicated with the second end of the first three-way valve 24; the second control unit includes a third control module for maintaining the first end of the first three-way valve and the second end of the first three-way valve not to be communicated, and the third control unit includes a fourth control module for controlling the first end of the first three-way valve 24 and the third end of the first three-way valve 24 to be communicated.

In another embodiment of the present application, as shown in fig. 2, the second control assembly comprises a second three-way valve 25, a first end of the second three-way valve 25 is connected to a second end of the first heat exchanger 11, a second end of the second three-way valve 25 is connected to a second end of the second heat exchanger 21, a third end of the second three-way valve 25 is connected to a third end of the first three-way valve 24, the fourth control unit includes a fifth control module, the fifth control module is used for controlling the communication between the first end of the second three-way valve 25 and the second end of the second three-way valve 25, the fifth control unit includes a sixth control module for controlling the communication between the first end of the second three-way valve 25 and the second end of the second three-way valve 25, the third control unit includes a seventh control module, and the seventh control module is configured to include: and controlling the second end of the second three-way valve 25 to communicate with the third end of the second three-way valve 25.

In an embodiment of the present application, as shown in fig. 1, the first control unit further includes an eighth control module, and the eighth control module is configured to control the first end of the first three-way valve 24 not to be communicated with the third end of the first three-way valve 24. Specifically, in the process of taking the refrigerant of the indoor unit into the outdoor unit, the first end of the first three-way valve is not communicated with the third end of the first three-way valve, so that the third pipeline is disconnected, the refrigerant is prevented from flowing into the second pipeline through the third pipeline, the refrigerant of the indoor unit is conveniently taken into the outdoor unit through the second pipeline, the efficiency of taking in the refrigerant is improved, and the defrosting time is further reduced.

In still another embodiment of the present invention, as shown in fig. 3, the four-way valve 22 includes a first port, a second port, a third port and a fourth port, wherein a first end of the first port is communicated with a first end of the first heat exchanger 11, a second end of the first port is communicated with a first end of the second port or with a first end of the third port, a second end of the second port is communicated with an air inlet of the compressor 23, a second end of the third port is communicated with an air outlet of the compressor 23, a first end of the fourth port is communicated with a first end of the second port or with a first end of the third port, the first control module includes a first control valve 26, a first end of the first control valve 26 is connected with a first end of the first heat exchanger 11, a second end of the first control valve 26 is connected with a first end of the first port, the first control unit includes a ninth control module, the ninth control module is configured to control that the first end of the first control valve is not communicated with the second end of the first control valve, and the second control unit includes a tenth control module configured to control that the first end of the first control valve is not communicated with the second end of the first control valve.

In an embodiment of the present invention, as shown in fig. 4, the air conditioner further includes a second control valve 27, the second control valve 27 is located on the third pipeline, and the third control unit includes an eleventh control module, and the eleventh control module is configured to control the first end of the first control valve 26 to communicate with the second end of the first control valve 26.

In a preferred embodiment of the present application, as shown in fig. 4, the first control unit includes a twelfth control module, and the twelfth control module is configured to control that the first end of the second control valve 27 is not communicated with the second end of the second control valve 27. Specifically, in the process of taking the refrigerant of the indoor unit into the outdoor unit, the first stop valve controls the third pipeline to be disconnected, the refrigerant is prevented from flowing into the second pipeline through the third pipeline, the refrigerant of the indoor unit is conveniently taken into the outdoor unit through the second pipeline, the efficiency of taking in the refrigerant is accelerated, and therefore defrosting time is further shortened.

In an embodiment of the application, the control device further includes a determination unit, and the determination unit is configured to determine whether a process of recovering the refrigerant in the air conditioning apparatus into the outdoor unit is completed before communication among the four-way valve, the third pipeline, and the second heat exchanger is maintained after the first control assembly is controlled to keep the first pipeline disconnected. In the control device, the refrigerants in the air conditioner are determined to be all recycled to the outdoor unit, so that more refrigerants can be ensured to circulate in the outdoor unit in the defrosting process, the defrosting efficiency is further improved, and the defrosting time is shortened.

In an embodiment of the present application, the determining unit includes a first determining module and a second determining module, where the first determining module is configured to determine that the refrigerant is completely recycled to the outdoor unit after a predetermined state is maintained for a predetermined time, and the predetermined state is a state where the first pipeline is not connected and the second pipeline is connected; the second determining module is configured to determine that the refrigerant is completely recycled to the outdoor unit when a temperature difference between a first temperature and a second temperature is less than a predetermined temperature, where the first temperature is a temperature of a pipeline of the indoor unit, and the second temperature is an indoor environment temperature. Specifically, the temperature of the pipeline of the indoor unit is changed by the refrigerant in the pipeline of the indoor unit through circulating heat exchange, so that the difference between the first temperature and the second temperature is large, and under the condition that the temperature difference between the first temperature and the second temperature is smaller than the preset temperature, it is indicated that the refrigerant does not circulate and exchange heat in the pipeline of the indoor unit basically, and the process of recovering the refrigerant into the outdoor unit can be determined.

In an embodiment of the present application, as shown in fig. 1 to 3, the indoor unit 10 further includes a heating device 12 and an inner fan 13, the heating device 12 is located at one side of the first heat exchanger 11, the heating device 12 is located between the inner fan 13 and the first heat exchanger 11, so that outlet air of the inner fan is heated by the heating device and then discharged through the air deflector, after it is determined that a process of recovering a refrigerant in the air conditioner into the outdoor unit is completed, the control device further includes a third control unit, the third control unit includes a thirteenth control module and a fourteenth control module, and the thirteenth control module is used for controlling the heating device 12 to be turned on; the fourteenth control module is configured to control the internal blower 13 to start. In the defrosting process, the air outlet of the inner fan is heated by the heating equipment and then discharged through the air guide plate, so that heat supply to the indoor space is realized, the indoor temperature reduction in the defrosting process is avoided, and the comfort of the air conditioner is improved.

In an embodiment of the application, the thirteenth control module includes a first determining submodule and a first control submodule, wherein the first determining submodule is configured to determine a wind level of the inner fan according to the working power of the heating device and/or the second temperature, and the determined wind volume of the wind level is positively correlated to both the working power and the second temperature; the first control submodule is used for controlling the inner fan to work with the determined wind gear.

Specifically, the wind level of the inner fan is determined according to the working power and the second temperature of the heating device, the wind level a, the wind level B and the wind level C are divided according to the rotation speed of the outer fan from low to high, and the corresponding relationship between the working power and the second temperature of the heating device and the wind level is shown in table 2.

TABLE 2

The control device of the air conditioner comprises a processor and a memory, wherein the first control unit, the second control unit and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.

The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to one or more, and the defrosting time is reduced by adjusting the kernel parameters.

The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.

An embodiment of the present invention provides a storage medium having a program stored thereon, the program implementing the control method of the air conditioner described above when executed by a processor.

The embodiment of the invention provides a processor, which is used for running a program, wherein the program executes the control method of the air conditioner when running.

The embodiment of the invention provides equipment, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein when the processor executes the program, at least the following steps are realized:

step S101, under the condition that the outdoor unit of the air conditioner needs defrosting, controlling a first control assembly to enable a first pipeline not to be communicated;

step S102, controlling the first control assembly to enable the first pipeline to be kept disconnected;

and S103, maintaining the communication among the four-way valve, the third pipeline and the second heat exchanger.

The device herein may be a server, a PC, a PAD, a mobile phone, etc.

The present application further provides a computer program product adapted to perform a program of initializing at least the following method steps when executed on a data processing device:

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:

1) the air conditioner comprises a first control assembly and a third pipeline, under the condition that the air conditioner needs defrosting, the first control assembly controls the first pipeline to be disconnected firstly, so that the refrigerant of a first heat exchanger is collected into an outdoor unit, then the first control assembly controls the first pipeline to be disconnected, the four-way valve, the third pipeline and the second heat exchanger are kept communicated, the refrigerant after heat exchange of the second heat exchanger flows into a compressor to be compressed, the discharged high-temperature gas refrigerant returns to the second heat exchanger through the third pipeline to form a defrosting cycle, so that the high-temperature refrigerant quickly melts a frost layer, the defrosting effect is improved, the defrosting time is shortened, in addition, as the refrigerant of the first heat exchanger is collected into the outdoor unit, the situation that liquid refrigerant in the first heat exchanger excessively enters the compressor to generate liquid impact is avoided, and more refrigerants are subjected to defrosting cycle is avoided, further reducing defrost time.

2) In the control method, under the condition that the outdoor unit of the air conditioning device needs defrosting, the first control assembly controls the first pipeline to be disconnected firstly, so that the refrigerant of the first heat exchanger is collected into the outdoor unit, then the first control assembly controls the first pipeline to be disconnected, the third control unit keeps the four-way valve, the third pipeline and the second heat exchanger to be communicated, so that the refrigerant after heat exchange of the second heat exchanger flows into the compressor to be compressed, the discharged high-temperature gas refrigerant returns to the second heat exchanger through the third pipeline to form a defrosting cycle, so that the high-temperature refrigerant quickly melts a frost layer, the defrosting effect is improved, the defrosting time is reduced, and in addition, as the refrigerant of the first heat exchanger is collected into the outdoor unit, the liquid refrigerant in the first heat exchanger is prevented from excessively entering the compressor to generate liquid impact, and more refrigerants are subjected to defrosting cycle, further reducing defrost time.

3) In the control device, the first control unit controls the first control assembly to disconnect the first pipeline under the condition that the outdoor unit of the air conditioning device needs defrosting, so that the refrigerant of the first heat exchanger is collected into the outdoor unit, the second control unit controls the first control assembly to keep the first pipeline disconnected, so that the refrigerant after heat exchange of the second heat exchanger flows into the compressor to be compressed, the discharged high-temperature gas refrigerant returns to the second heat exchanger through the third pipeline, a defrosting cycle is formed, the high-temperature refrigerant quickly melts a frost layer, the defrosting effect is improved, the defrosting time is shortened, and the liquid refrigerant in the first heat exchanger is prevented from excessively entering the compressor to generate liquid impact due to the fact that the refrigerant is collected into the outdoor unit, more refrigerants are subjected to defrosting cycle, and the defrosting time is further shortened.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides an air conditioning equipment, its characterized in that, includes indoor set and off-premises station, the indoor set includes first heat exchanger, the off-premises station includes cross valve, compressor and second heat exchanger, the compressor includes air inlet and gas outlet, the air inlet passes through the cross valve with the first end of first heat exchanger or the first end intercommunication of second heat exchanger, the gas outlet passes through the cross valve with the first end of second heat exchanger or the first end intercommunication of first heat exchanger, air conditioning equipment still includes:

the first control assembly is positioned on a first pipeline and used for controlling the on-off of the first pipeline, and the first pipeline is a pipeline between the four-way valve and the first end of the first heat exchanger;

and one end of the third pipeline is connected with a branch between the first control assembly and the four-way valve, the other end of the first pipeline is connected with a second pipeline, and the second pipeline is a pipeline between the second end of the first heat exchanger and the second end of the second heat exchanger.

2. The air conditioning apparatus as claimed in claim 1, further comprising:

and the second control assembly is positioned on the second pipeline and/or the third pipeline and is used for controlling the on-off of the second pipeline and/or controlling the on-off of the second heat exchanger and the third pipeline.

3. The air conditioning apparatus according to claim 2, wherein the four-way valve includes a first port, a second port, a third port, and a fourth port, wherein a first end of the first port communicates with the first end of the first heat exchanger, a second end of the first port communicates with the first end of the second port or with the first end of the third port, a second end of the second port communicates with the air inlet of the compressor, a second end of the third port communicates with the air outlet of the compressor, and a first end of the fourth port communicates with the first end of the second port or with the first end of the third port,

the first control assembly comprises a first three-way valve, a first end of the first three-way valve is connected with a first end of the first heat exchanger, and a second end of the first three-way valve is connected with a first end of the first port;

the second control assembly comprises a second three-way valve, a first end of the second three-way valve is connected with a second end of the first heat exchanger, a second end of the second three-way valve is connected with a second end of the second heat exchanger, and a third end of the second three-way valve is connected with a third end of the first three-way valve through a third pipeline.

4. The air conditioning apparatus according to claim 2, wherein the four-way valve includes a first port, a second port, a third port, and a fourth port, wherein a first end of the first port communicates with the first end of the first heat exchanger, a second end of the first port communicates with the first end of the second port or with the first end of the third port, a second end of the second port communicates with the air inlet of the compressor, a second end of the third port communicates with the air outlet of the compressor, and a first end of the fourth port communicates with the first end of the second port or with the first end of the third port,

the first control assembly comprises a first control valve, a first end of the first control valve is connected with a first end of the first heat exchanger, and a second end of the first control valve is connected with a first end of the first port;

the second control assembly includes a second control valve located on the third line.

5. The air conditioner apparatus according to any one of claims 1 to 4, further comprising:

a throttling device connected between the second end of the first heat exchanger and the second end of the second heat exchanger.

6. An air conditioning apparatus according to any one of claims 1 to 4, characterized in that the indoor unit further includes:

and the heating device is positioned on one side of the first heat exchanger.

7. A control method of an air conditioning apparatus according to any one of claims 1 to 6, characterized by comprising:

under the condition that the outdoor unit of the air conditioning device needs defrosting, controlling a first control assembly to enable the first pipeline not to be communicated;

controlling the first control assembly such that the first conduit remains unconnected;

and maintaining the communication among the four-way valve, the third pipeline and the second heat exchanger.

8. The control method according to claim 7, wherein the air conditioning apparatus further includes a second control unit provided on the second pipe, the second control unit being configured to control on/off of the second pipe, and before controlling the first control unit so that the first pipe remains unconnected, the method further includes:

and under the condition that the outdoor unit of the air conditioner needs defrosting, controlling the second control assembly to enable the second pipeline to be communicated.

9. The control method of claim 8, wherein in case it is determined that the outdoor unit of the air conditioner needs defrosting, after controlling the first control unit so that the first pipe is not connected, the method further comprises:

controlling the second control assembly so that the second conduit is not open.

10. The control method according to claim 7, wherein the air conditioner further comprises a second control assembly, the second control assembly is located on the third pipeline, the second control assembly is used for controlling the on-off of the third pipeline and maintaining communication among the four-way valve, the third pipeline and the second heat exchanger, and the method comprises the following steps:

controlling the second control assembly to communicate the third line.

11. The control method according to claim 7, wherein the four-way valve includes a first port, a second port, a third port, and a fourth port, wherein a first end of the first port communicates with the first end of the first heat exchanger, a second end of the first port communicates with the first end of the second port or with the first end of the third port, a second end of the second port communicates with the air inlet of the compressor, a second end of the third port communicates with the air outlet of the compressor, a first end of the fourth port communicates with the first end of the second port or with the first end of the third port, the first control assembly includes a first three-way valve, a first end of the first three-way valve is connected with the first end of the first heat exchanger, a second end of the first three-way valve is connected with the first end of the first port, and a second end of the first three-way valve is connected with one end of the third pipeline,

controlling a first control assembly so that the first conduit is not in communication, comprising: controlling a first end of the first three-way valve to not communicate with a second end of the first three-way valve,

controlling the first control assembly such that the first conduit remains unconnected, comprising: maintaining the first end of the first three-way valve and the second end of the first three-way valve out of communication,

maintaining communication among the four-way valve, the third pipeline, and the second heat exchanger, includes: and controlling the first end of the first three-way valve to be communicated with the third end of the first three-way valve.

12. The method of claim 8, wherein the second control module includes a second three-way valve, a first end of the second three-way valve is connected to the second end of the first heat exchanger, a second end of the second three-way valve is connected to the second end of the second heat exchanger, a third end of the second three-way valve is connected to the third end of the first three-way valve, and the second control module is controlled to communicate the second pipe if it is determined that the outdoor unit of the air conditioner needs defrosting, and further comprising: controlling the first end of the second three-way valve and the second end of the second three-way valve to communicate, controlling the second control assembly so that the second line does not communicate, comprising: controlling a first end of the second three-way valve and a second end of the second three-way valve not to be communicated,

maintaining communication among the four-way valve, the third pipeline, and the second heat exchanger, includes: and controlling the second end of the second three-way valve to be communicated with the third end of the second three-way valve.

13. The control method according to claim 7, wherein the four-way valve includes a first port, a second port, a third port, and a fourth port, wherein a first end of the first port communicates with the first end of the first heat exchanger, a second end of the first port communicates with the first end of the second port or with the first end of the third port, a second end of the second port communicates with the air inlet of the compressor, a second end of the third port communicates with the air outlet of the compressor, a first end of the fourth port communicates with the first end of the second port or with the first end of the third port, the first control assembly includes a first control valve, a first end of the first control valve is connected with the first end of the first heat exchanger, and a second end of the first control valve is connected with the first end of the first port,

controlling a first control assembly so that the first conduit is not in communication, comprising: the first end of the first control valve and the second end of the first control valve are controlled not to be communicated,

controlling the first control assembly such that the first conduit remains unconnected, comprising: and controlling the first end of the first control valve not to be communicated with the second end of the first control valve.

14. The control method of claim 8, wherein the second control assembly includes a second control valve located on the third line,

maintaining communication among the four-way valve, the third pipeline, and the second heat exchanger, includes: controlling the first end of the second control valve to communicate with the second end of the second control valve.

15. The control method according to any one of claims 7 to 14, wherein after controlling the first control assembly so that the first line remains unconnected, before maintaining communication between the four-way valve, the third line, and the second heat exchanger, the control method further comprises:

and determining whether the refrigerant in the air conditioner is completely recycled to the outdoor unit.

16. The control method of claim 15, wherein the determining whether the refrigerant in the air conditioner is completely recovered into the outdoor unit comprises:

after a preset state is kept for a preset time, determining that the refrigerant is completely recycled into the outdoor unit, wherein the preset state is a state that the first pipeline is not communicated and the second pipeline is communicated; or

And determining that the refrigerant is completely recycled into the outdoor unit under the condition that the temperature difference between a first temperature and a second temperature is less than a preset temperature, wherein the first temperature is the pipeline temperature of the indoor unit, and the second temperature is the indoor environment temperature.

17. The control method of claim 16, wherein the indoor unit further includes a heating device and an inner fan, the heating device is located at one side of a first heat exchanger, the heating device is located between the inner fan and the first heat exchanger, and after determining that all refrigerants in the air conditioning device are completely recycled to the outdoor unit, the control method further includes:

controlling the heating equipment to start to work;

and controlling the inner fan to start.

18. The control method according to claim 17, wherein controlling the inner fan to be turned on comprises:

determining the wind level of the inner fan according to the working power and/or the second temperature of the heating equipment, wherein the determined wind volume of the wind level is positively correlated with the working power and the second temperature respectively;

and controlling the inner fan to work at the determined wind gear.

19. A control device of an air conditioning device according to any one of claims 1 to 6, characterized by comprising:

the first control unit is used for controlling the first control assembly under the condition that the outdoor unit of the air conditioner needs defrosting, so that the first pipeline is not communicated;

a second control unit for controlling the first control assembly such that the first conduit remains unconnected;

and the third control unit is used for maintaining the communication among the four-way valve, the third pipeline and the second heat exchanger.

20. A storage medium characterized by comprising a stored program, wherein the program executes the control method of any one of claims 7 to 18.

21. A processor, characterized in that the processor is configured to run a program, wherein the program is configured to execute the control method according to any one of claims 7 to 18 when running.