CN116045555A - Gas-liquid separation device and method for air conditioner and air conditioner - Google Patents

Abstract

The application relates to the technical field of air conditioners and discloses a gas-liquid separation device for an air conditioner, which comprises a gas-liquid separation part, a valve body and a heat exchange part, wherein the gas-liquid separation part comprises a gas-liquid inlet communicated with a first heat exchanger outlet of a refrigerant circulation system, an exhaust port communicated with a second heat exchanger inlet of the refrigerant circulation system and a liquid outlet; the heat exchange part is a hollow cavity with two open ends, is communicated with or passes through a low-temperature refrigerant pipe of the refrigerant circulation system and is used for carrying out heat exchange with the gas-liquid separation part. According to the gas-liquid separation device, the refrigerant purifying process can be completed by switching the opening and closing states of the valve body, the air conditioner is not required to be stopped during operation, and the production cost of equipment and the energy consumption of the air conditioner can be reduced. The application also discloses a method for the air conditioner and the air conditioner.

Description

Gas-liquid separation device and method for air conditioner and air conditioner

Technical Field

The present disclosure relates to the field of air conditioning technologies, and for example, to a gas-liquid separation device and method for an air conditioner, and an air conditioner.

Background

After non-condensable gases such as air are mixed in an air conditioning system, the performance of the air conditioner can be seriously affected, and the energy consumption is increased. At present, air in a system cannot be directly discharged from a household air conditioner, and often, non-condensable gas is separated from a refrigerant by manually discharging or adding additional equipment, and the air conditioner cannot be normally used during discharging.

By means of manual removal of non-condensable gas, an operator is required to judge the content of the non-condensable gas in the refrigerant according to the condensation pressure, and the method is required to rely on experience of the operator, so that the refrigerant is easily wasted.

In the method for adding additional equipment, the mixed steam of the refrigerant and the air is discharged to a condensing device from a liquid storage tank or a condenser, and the refrigerant is condensed and separated by an additional cold source, so that the liquid refrigerant flows back to the system. This method requires adding additional equipment and piping, increasing the running cost of the equipment. And energy.

It should be noted that the information disclosed in the foregoing background section is only for enhancing understanding of the background of the present application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a gas-liquid separation device and method for an air conditioner and the air conditioner, which can enable the air conditioner to discharge noncondensable gas during operation.

In some embodiments, the gas-liquid separation device for an air conditioner comprises a gas-liquid separation part, a valve body and a heat exchange part, wherein the gas-liquid separation part comprises a gas-liquid inlet, a liquid outlet and an exhaust port, the gas-liquid inlet is used for being communicated with a first heat exchanger outlet of a refrigerant circulation system, and the liquid outlet is used for being communicated with a second heat exchanger inlet of the refrigerant circulation system; the valve body is arranged on the exhaust port and is used for being opened in a refrigerant purifying state of the air conditioner so as to discharge non-condensable gas in the refrigerant; the heat exchange part is a hollow cavity with two open ends, the heat exchange part is communicated with or passes through a low-temperature refrigerant pipe of the refrigerant circulation system, and the heat exchange part is used for carrying out heat exchange with the gas-liquid separation part.

Optionally, the heat exchange portion is disposed within the gas-liquid separation portion.

Optionally, the hollow cavity of the heat exchange portion is of a spiral or helical configuration.

In some embodiments, the air conditioner comprises a refrigerant circulation system and the gas-liquid separation device, wherein the refrigerant circulation system comprises a compressor, a first heat exchanger and a second heat exchanger, an outlet of the compressor is connected with an inlet of the first heat exchanger, an outlet of the first heat exchanger is connected with an inlet of the second heat exchanger, and an outlet of the second heat exchanger is communicated with an inlet of the compressor; the gas-liquid separation device is connected with the refrigerant circulation system and is positioned between the first heat exchanger and the second heat exchanger.

Optionally, the refrigerant circulation system further comprises a low-temperature refrigerant pipe, the low-temperature refrigerant pipe is connected with the outlet of the second heat exchanger and the inlet of the compressor, and the low-temperature refrigerant pipe passes through the hollow cavity of the heat exchange part of the gas-liquid separation device or is communicated with the hollow cavity.

Optionally, the air conditioner further comprises a first electronic expansion valve and a second electronic expansion valve, wherein the first electronic expansion valve is arranged on a connecting pipeline of the indoor heat exchanger and the gas-liquid separation device; the second electronic expansion valve is arranged on a connecting pipeline of the outdoor heat exchanger and the gas-liquid separation device; in a refrigeration state, the first electronic expansion valve is used for throttling, and the second electronic expansion valve is fully opened; in the heating state, the first electronic expansion valve is fully opened, and the second electronic expansion valve is used for throttling.

Optionally, the refrigerant circulation system further comprises a first four-way valve, a second four-way valve, a third four-way valve and a state four-way valve, wherein the first four-way valve comprises a first opening, a second opening, a third opening and a fourth opening, the first opening is communicated with the outlet of the indoor heat exchanger, and the third opening is communicated with the inlet of the indoor heat exchanger; the second four-way valve comprises a first port, a second port, a third port and a fourth port, the first port is communicated with a liquid outlet of the gas-liquid separation device, the second port is communicated with a fourth port of the first four-way valve, and the third port is communicated with a gas-liquid inlet of the gas-liquid separation device; the third four-way valve comprises a first valve port, a second valve port, a third valve port and a fourth valve port, wherein the first valve port is communicated with an outlet of the outdoor heat exchanger, the second valve port is communicated with a fourth port of the second four-way valve, and the third valve port is communicated with an inlet of the outdoor heat exchanger; the state four-way valve comprises a first communication port, a second communication port, a third communication port and a fourth communication port, wherein the first communication port is communicated with the outlet of the compressor, the second communication port is communicated with the fourth valve port of the third four-way valve, the third communication port is communicated with the inlet of the compressor, and the fourth communication port is communicated with the second opening of the first four-way valve.

Optionally, in the refrigeration state, the first communication port of the state four-way valve is communicated with the second communication port, the third communication port is communicated with the fourth communication port, the first opening of the first four-way valve is communicated with the second opening, the third opening is communicated with the fourth opening, the first communication port of the second four-way valve is communicated with the second opening, the third opening is communicated with the fourth opening, the first valve port of the third four-way valve is communicated with the second valve port, and the third valve port is communicated with the fourth valve port; under the heating state, the first communication port and the fourth communication port of the state four-way valve are communicated, the second communication port and the third communication port are communicated, the first opening and the fourth opening of the first four-way valve are communicated, the second opening and the third opening are communicated, the first opening and the fourth opening of the second four-way valve are communicated, the second opening and the third opening are communicated, the first valve port and the fourth valve port of the third four-way valve are communicated, and the second valve port and the third valve port are communicated.

Optionally, the first electronic expansion valve is installed on a connecting pipeline between the fourth opening and the second opening; the second electronic expansion valve is arranged on a connecting pipeline of the fourth port and the second valve port.

In some embodiments, the method for an air conditioner is applied to the air conditioner, and the method includes: opening a refrigerant purifying mode; acquiring the current running frequency of the compressor; according to the current operating frequency of the compressor, the operating frequency of the outdoor unit fan is adjusted so that the refrigerant at the outlet of the first heat exchanger is in a two-phase state; controlling the outdoor unit fan to operate for a first set period of time at the adjusted fan operating frequency; opening a valve body of the gas-liquid separation device to exhaust for a second set period of time; closing the valve body of the gas-liquid separation device.

The gas-liquid separation device and method for the air conditioner and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:

by adopting the gas-liquid separation device for the air conditioner, when the air conditioner normally operates, the valve body at the exhaust port can be closed, and the valve body is used as a heat regenerator to heat the low-temperature refrigerant of the heat exchange part by utilizing the heat of the fluid positioned in the gas-liquid separation part; when the air conditioner purifies the refrigerant, the air conditioner is used as a gas-liquid separator, the cooling capacity of the heat exchange part is utilized to cool the fluid of the gas-liquid separation part, the refrigerant is separated from the non-condensable gas, and meanwhile, the function of a heat regenerator can be reserved to heat the low-temperature refrigerant. The gas-liquid separation device can complete the refrigerant purifying process by switching the opening and closing states of the valve body, an air conditioner is not required to be stopped during operation, and the gas-liquid separation device has two functions of a heat regenerator and refrigerant purifying, so that the production cost of equipment and the energy consumption of the air conditioner can be reduced.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

fig. 1 is a schematic view of a gas-liquid separation apparatus for an air conditioner according to an embodiment of the present disclosure;

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

fig. 3 is a schematic diagram of another air conditioner according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram of another air conditioner according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a method for an air conditioner provided by an embodiment of the present disclosure;

FIG. 6 is a schematic view of an apparatus for an air conditioner provided in an embodiment of the present disclosure;

FIG. 7 is a schematic view of another apparatus for an air conditioner provided by an embodiment of the present disclosure;

fig. 8 is a schematic structural view of another air conditioner according to an embodiment of the present disclosure.

Reference numerals:

100: an air conditioner; 10: a gas-liquid separation device; 11: a gas-liquid separation unit; 111: a gas-liquid inlet; 112: an exhaust port; 113: a liquid outlet; 114: an efficient foam net; 115: a valve body; 12: a heat exchange section; 21: an indoor heat exchanger; 22: an outdoor heat exchanger; 23: a compressor; 24: a first four-way valve; 25: a second four-way valve; 26: a third four-way valve; 27: a state four-way valve; 28: a first electronic expansion valve; 29: a second electronic expansion valve;

200: an apparatus for an air conditioner; 201: a first acquisition module; 202: a first adjustment module; 203: a second acquisition module; 204: a second adjustment module;

300: an apparatus for an air conditioner; 301: a memory; 302: a communication interface; 303: a bus; 304: a processor.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. is based on the azimuth or positional relationship shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," and "fixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

As shown in conjunction with fig. 1, the embodiment of the present disclosure provides a gas-liquid separation apparatus 10 for an air conditioner 100 including a gas-liquid separation portion 11, a valve body 115, and a heat exchange portion 12.

The gas-liquid separation part 11 comprises a gas-liquid inlet 111, a liquid outlet 113 and an exhaust port 112, wherein the gas-liquid inlet 111 is used for being communicated with a first heat exchanger outlet of the refrigerant circulation system, and the liquid outlet 113 is used for being communicated with a second heat exchanger inlet of the refrigerant circulation system.

The valve body 115 is disposed on the exhaust port 112, and the valve body 115 is used for being opened in a refrigerant purifying state of the air conditioner 100 to discharge non-condensable gas in the refrigerant.

The heat exchange part 12 is a hollow cavity with two open ends, the heat exchange part 12 is communicated with or passes through a low-temperature refrigerant pipe of the refrigerant circulation system, and the heat exchange part 12 is used for performing heat exchange with the gas-liquid separation part 11.

It can be understood that the gas-liquid separation device 10 mainly comprises a gas-liquid separation portion 11 and a heat exchange portion 12, and the gas-liquid separation portion 11 is independent of the heat exchange portion 12. The gas-liquid separation portion 11 is mainly used for separating refrigerant from non-condensable gas, and fluid entering the gas-liquid separation portion 11 from the gas-liquid inlet 111 does not contact with the internal structure of the heat exchange portion 12. The hollow cavity of the heat exchange portion 12 is used for passing a low-temperature refrigerant of the refrigerant circulation system, has a cooling capacity, and can exchange heat with the gas-liquid separation portion 11. The gas-liquid separation portion 11 is provided with a valve body 115 at the gas outlet 112, and when the valve body 115 is opened, it can be used to discharge non-condensable gas mixed in the refrigerant.

In the air conditioner 100 in the refrigerant purifying state, the valve body 115 on the air outlet 112 of the air-liquid separation part 11 is opened, and the temperature of the fluid in the air-liquid separation part 11 is reduced under the action of the heat exchange part 12, so that the refrigerant and the non-condensable gas are converted into liquid refrigerant due to different condensation points, the non-condensable gas is kept in a gaseous state, the non-condensable gas and the liquid refrigerant are separated under the low temperature, the non-condensable gas is discharged through the air outlet 112, and the liquid refrigerant is discharged from the liquid outlet 113.

In the normal operation state of the air conditioner 100, the valve body 115 on the exhaust port 112 of the gas-liquid separation portion 11 is closed, the gas-liquid separation device 10 serves as a regenerator, fluid in the gas-liquid separation portion 11 enters from the gas-liquid inlet 111 and is discharged from the liquid outlet 113, and the heat of the fluid in the gas-liquid separation portion 11 can heat the low-temperature refrigerant pipe, so that the temperature of the refrigerant flowing back to the compressor 23 is increased, and the energy consumption is reduced.

By adopting the gas-liquid separation device 10 for the air conditioner 100, when the air conditioner 100 is in normal operation, the valve body 115 at the exhaust port 112 can be closed, and the gas-liquid separation device 11 can be used as a heat regenerator to heat the low-temperature refrigerant of the heat exchange part 12 by utilizing the heat of the fluid of the gas-liquid separation part 11, so that the energy consumption of the compressor 23 is reduced; when the air conditioner 100 performs refrigerant purification, the heat exchange portion 12 cools the fluid of the gas-liquid separation portion 11 by using the cooling capacity of the heat exchange portion 12 as a gas-liquid separator, separates the refrigerant from the non-condensable gas, discharges the non-condensable gas through the exhaust port 112, and can retain the function of the regenerator.

When the gas-liquid separation device 10 is used, the refrigerant purifying process can be completed by switching the opening and closing states of the valve body 115, the air conditioner 100 is not required to be stopped, the operation is convenient, the gas-liquid separation device 10 has the functions of a heat regenerator and refrigerant purifying, extra equipment and pipelines are not required, and the production cost of the equipment and the energy consumption of the air conditioner 100 can be reduced.

As an example, the gas-liquid separation apparatus 10 for the air conditioner 100 provided in the embodiment of the present disclosure may be improved on the basis of a gas-liquid separator. Specifically, the gas-liquid separation device 10 is provided with a high-efficiency foam net 114 at the top, the gas-liquid inlet 111 is arranged on the side wall of the shell and is positioned below the high-efficiency foam net 114, the exhaust port 112 is positioned above the high-efficiency foam net 114, the exhaust port 112 is provided with a valve body 115 such as an electromagnetic valve, the liquid outlet 113 is positioned at the bottom of the shell, the gas-liquid separator is internally provided with a hollow cavity with two open ends, and the cavity penetrates through the gas-liquid separation device 10 and is used for penetrating through a low-temperature refrigerant pipe of a refrigerant circulation system so as to facilitate heat exchange between the heat exchange part 12 and the gas-liquid separation part 11.

Alternatively, the heat exchange portion 12 is provided in the gas-liquid separation portion 11.

It will be appreciated that the hollow cavity of the heat exchange portion 12 passes through the gas-liquid separation portion 11. The fluid entering the gas-liquid separation portion 11 through the gas-liquid inlet 111 can be in contact with the outer chamber wall of the heat exchange portion 12 to exchange heat.

Alternatively, the hollow cavity of the heat exchange portion 12 may have a spiral or helical configuration. This increases the contact area between the fluid and the heat exchange portion 12 to improve heat exchange efficiency, and facilitates the discharge of non-condensable gas and/or the heating of low-temperature refrigerant.

Referring to fig. 2-4, an embodiment of the present disclosure provides an air conditioner 100 including a refrigerant circulation system and a gas-liquid separation device 10 as described above.

The refrigerant circulation system comprises a compressor 23, a first heat exchanger and a second heat exchanger, wherein an outlet of the compressor 23 is connected with an inlet of the first heat exchanger, an outlet of the first heat exchanger is connected with an inlet of the second heat exchanger, and an outlet of the second heat exchanger is communicated with an inlet of the compressor 23.

The gas-liquid separation device 10 is connected with the refrigerant circulation system and is positioned between the first heat exchanger and the second heat exchanger.

It will be appreciated that in the cold state, the first heat exchanger is an outdoor heat exchanger 22 and the second heat exchanger is an indoor heat exchanger 21; in the heating state, the first heat exchanger is an indoor heat exchanger 21, the second heat exchanger is an outdoor heat exchanger 22, and the gas-liquid separation device 10 is connected with the first heat exchanger and the second heat exchanger and is connected with a refrigerant circulation system.

By adopting the air conditioner 100 provided by the disclosure, the refrigerant purifying process can be completed by switching the opening and closing state of the valve body 115 of the gas-liquid separation device 10, the air conditioner 100 is not required to be stopped, the operation is convenient, the gas-liquid separation device 10 has the functions of a heat regenerator and refrigerant purifying, extra equipment and pipelines are not required, and the production cost of the equipment and the energy consumption of the air conditioner 100 can be reduced.

Optionally, the refrigerant circulation system further includes a low-temperature refrigerant pipe, the low-temperature refrigerant pipe is connected to the outlet of the second heat exchanger and the inlet of the compressor 23, and the low-temperature refrigerant pipe passes through or is communicated with the hollow cavity of the heat exchange portion 12 of the gas-liquid separation device 10.

It will be appreciated that the low temperature refrigerant pipe is used to provide cooling to the heat exchange portion 12 of the gas-liquid separation device 10.

As an example, the fluid flow direction of the gas-liquid separation portion 11 is opposite to the fluid flow direction of the heat exchange portion 12.

Optionally, the air conditioner 100 further includes a first electronic expansion valve 28 and a second electronic expansion valve 29, the first electronic expansion valve 28 being installed on a connection line between the indoor heat exchanger 21 and the gas-liquid separation device 10; the second electronic expansion valve 29 is installed on the connection pipeline between the outdoor heat exchanger 22 and the gas-liquid separation device 10; in the refrigeration state, the first electronic expansion valve 28 is used for throttling, and the second electronic expansion valve 29 is fully opened; in the heating state, the first electronic expansion valve 28 is fully opened, and the second electronic expansion valve 29 is used for throttling.

It will be appreciated that the gas-liquid separation device 10 is disposed between the condenser and the electronic expansion valve, and in the refrigeration state, the outdoor heat exchanger 22 is a condenser, the indoor heat exchanger 21 is an evaporator, the first electronic expansion valve 28 is a throttle valve, and the low-temperature refrigerant pipe is a connecting pipeline between the outlet of the indoor heat exchanger 21 and the inlet of the compressor 23; in the heating state, the indoor heat exchanger 21 is a condenser, the outdoor heat exchanger 22 is an evaporator, the second electronic expansion valve 29 is a throttle valve, and the low-temperature refrigerant pipe is a connecting pipeline between the outlet of the outdoor heat exchanger 22 and the inlet of the compressor 23.

Optionally, the refrigerant circulation system further includes a first four-way valve 24, a second four-way valve 25, a third four-way valve 26 and a status four-way valve 27, the first four-way valve 24 includes a first opening, a second opening, a third opening and a fourth opening, the first opening is communicated with the outlet of the indoor heat exchanger 21, and the third opening is communicated with the inlet of the indoor heat exchanger 21; the second four-way valve 25 includes a first port, a second port, a third port and a fourth port, the first port is communicated with the liquid discharge port 113 of the gas-liquid separation device 10, the second port is communicated with the fourth port of the first four-way valve 24, and the third port is communicated with the gas-liquid inlet 111 of the gas-liquid separation device 10; the third four-way valve 26 comprises a first valve port, a second valve port, a third valve port and a fourth valve port, wherein the first valve port is communicated with the outlet of the outdoor heat exchanger 22, the second valve port is communicated with the fourth port of the second four-way valve 25, and the third valve port is communicated with the inlet of the outdoor heat exchanger 22; the status four-way valve 27 includes a first communication port, a second communication port, a third communication port and a fourth communication port, the first communication port is communicated with the outlet of the compressor 23, the second communication port is communicated with the fourth valve port of the third four-way valve 26, the third communication port is communicated with the inlet of the compressor 23, and the fourth communication port is communicated with the second opening of the first four-way valve 24.

It can be appreciated that, in the present disclosure, on the basis of the original state four-way valve 27 of the air conditioner 100, three four-way valves are further added for reversing in the cooling and heating states, so that the outlet of the condenser of the air conditioner 100 is communicated with the liquid inlet and outlet of the gas-liquid separation device 10 in both the cooling state and the heating state. In the case of installation, the first four-way valve 24 may be installed near the indoor heat exchanger 21, the second four-way valve 25 may be installed near the gas-liquid separator 10, and the third four-way valve 26 may be installed near the outdoor heat exchanger 22.

As shown in fig. 3 and 4, alternatively, in the cooling state, the first communication port of the four-way valve 27 is communicated with the second communication port, the third communication port is communicated with the fourth communication port, the first opening of the first four-way valve 24 is communicated with the second opening, the third opening is communicated with the fourth opening, the first opening of the second four-way valve 25 is communicated with the second opening, the third port is communicated with the fourth opening, the first valve port of the third four-way valve 26 is communicated with the second valve port, and the third valve port is communicated with the fourth valve port; in the heating state, the first communication port of the state four-way valve 27 is communicated with the fourth communication port, the second communication port is communicated with the third communication port, the first opening of the first four-way valve 24 is communicated with the fourth opening, the second opening is communicated with the third opening, the first opening of the second four-way valve 25 is communicated with the fourth opening, the second opening is communicated with the third opening, the first valve port of the third four-way valve 26 is communicated with the fourth valve port, and the second valve port is communicated with the third valve port.

It will be appreciated that, as shown in fig. 3, in the cooling state, the high-temperature and high-pressure refrigerant flows out from the outlet of the compressor 23, flows through the state four-way valve 27 to the outdoor heat exchanger 22, enters the inlet of the outdoor heat exchanger 22 through the fourth valve port and the third valve port of the third four-way valve 26, flows out from the outdoor heat exchanger 22, sequentially passes through the first valve port, the second electronic expansion valve 29, the fourth port and the third port of the second four-way valve 25, enters the gas-liquid inlet 111 of the gas-liquid separation device 10, and the liquid refrigerant is discharged from the liquid discharge port 113, enters the inlet of the indoor heat exchanger 21 through the first port, the second port, the fourth opening and the third opening of the first four-way valve 24, flows out from the indoor heat exchanger 21, flows out through the first opening and the second opening, and returns to the compressor 23 through the state four-way valve 27.

As shown in fig. 4, in the heating state, the high-temperature and high-pressure refrigerant flows out from the outlet of the compressor 23, flows into the indoor heat exchanger 21 through the state four-way valve 27, enters the indoor heat exchanger 21 through the second valve port and the third valve port of the first four-way valve 24, flows out from the indoor heat exchanger 21, sequentially flows into the gas-liquid inlet 111 of the gas-liquid separation device 10 through the first valve port, the fourth valve port, the first electronic expansion valve 28, the second port and the third port of the second four-way valve 25, is discharged from the liquid outlet 113, enters the outdoor heat exchanger 22 through the first port, the fourth port, the second opening and the third opening of the second four-way valve 29, flows out from the outdoor heat exchanger 22, flows out through the first opening and the fourth opening, and returns to the compressor 23 through the state four-way valve 27.

Optionally, the first electronic expansion valve 28 is installed on a connection pipe between the fourth opening and the second opening; the second electronic expansion valve 29 is installed on the connection pipeline between the fourth port and the second valve port.

It is understood that the connecting pipeline between the fourth opening and the second opening is a connecting pipeline between the outlet of the indoor heat exchanger 21 and the gas-liquid inlet 111 of the gas-liquid separator in the heating state, and the connecting pipeline between the fourth opening and the second valve port is a connecting pipeline between the outlet of the outdoor heat exchanger 22 and the gas-liquid inlet 111 of the gas-liquid separator in the cooling state.

As shown in fig. 5, an embodiment of the present disclosure provides a method for an air conditioner, which is applied to the air conditioner, and the method includes:

s01, opening a refrigerant purifying mode of the air conditioner;

s02, the air conditioner obtains the current running frequency of the compressor;

s03, the air conditioner adjusts the running frequency of the fan of the outdoor unit according to the current running frequency of the compressor so as to enable the refrigerant at the outlet of the first heat exchanger to be in a two-phase state;

s04, controlling an outdoor unit fan to operate at the adjusted fan operating frequency for a first set period of time by the air conditioner;

s05, opening a valve body of the gas-liquid separation device by the air conditioner, and exhausting for a second set period of time;

s06, closing the valve body of the gas-liquid separation device by the air conditioner.

It can be understood that when the air conditioner is operating normally, the condenser is usually supercooled, and because of the difficulty in bringing air out of the pure liquid refrigerant, the method reduces the wind speed to make the refrigerant in a two-phase state, so that the gaseous refrigerant is easy to be converted into the liquid refrigerant after being cooled. When the refrigerant purifying function of the air conditioner is selected to be started, the operating frequency of the outdoor unit fan can be adjusted by utilizing the corresponding relation among the operating frequency of the compressor, the operating frequency of the outdoor unit fan and the phase state of the refrigerant at the outlet of the condenser, so that the air conditioner calculates the target operating frequency fw of the outdoor unit fan according to the current operating frequency fp of the compressor, and the refrigerant at the outlet of the condenser is in a two-phase state so as to bring air in the condenser into the gas-liquid separation device.

The air conditioner controls the outdoor unit fan to operate at the target operating frequency fw for a first set period of time, for example, after 1min, the refrigerant circulation system is operated for a set period of time so as to bring out air in the condenser, and then the exhaust port valve body of the gas-liquid separation device is controlled to be opened, so that the air conditioner enters an automatic exhaust circulation, and after the exhaust circulation for a second set period of time is operated, the valve body at the exhaust port is closed. Returning the system to the normal refrigeration and heating cycle.

By adopting the method for the air conditioner, the refrigerant purifying process can be completed by switching the opening and closing states of the valve body at the exhaust port of the gas-liquid separation device, the air conditioner is not required to be stopped during operation, and the gas-liquid separation device has the functions of a heat regenerator and refrigerant purifying, so that the production cost of equipment and the energy consumption of the air conditioner can be reduced.

Referring to fig. 6, an embodiment of the present disclosure provides an apparatus 200 for an air conditioner, including a starting module 201, an obtaining module 202, an adjusting module 203, and a valve opening and closing module 204.

The start module 201 is configured to turn on the refrigerant purge mode; the acquisition module 202 is configured to acquire a current operating frequency of the compressor; the adjusting module 203 is configured to adjust an operating frequency of the outdoor unit fan according to a current operating frequency of the compressor, so that the refrigerant at the outlet of the first heat exchanger is in a two-phase state, and control the outdoor unit fan to operate at the adjusted operating frequency for a first set period of time; the valve opening and closing module 204 is configured to open the valve body of the gas-liquid separation device, perform the exhaust for the second set period of time, and close the valve body of the gas-liquid separation device.

As shown in connection with fig. 7, an embodiment of the present disclosure provides an apparatus 300 for an air conditioner, including a processor (processor) 304 and a memory (memory air conditioner) 301. Optionally, the apparatus may further comprise a communication interface (Communication Interface) 302 and a bus 303. The processor 300, the communication interface 302, and the memory 301 may communicate with each other via the bus 303. The communication interface 302 may be used for information transfer. The processor 304 may call logic instructions in the memory 301 to perform the method for an air conditioner of the above-described embodiment.

Further, the logic instructions in the memory 301 may be implemented in the form of software functional units and stored in a computer readable storage medium when sold or used as a stand alone product.

The memory 301 is used as a computer readable storage medium for storing a software program, a computer executable program, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 304 executes the functional applications and data processing by running the program instructions/modules stored in the memory 301, i.e. implements the method for … in the above-described embodiments.

The memory 301 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for a function; the storage data area may store data created according to the use of the terminal device, etc. In addition, the memory 301 may include a high-speed random access memory, and may also include a nonvolatile memory.

As shown in conjunction with fig. 8, an embodiment of the present disclosure provides an air conditioner 100, including: an air conditioner body, and the above-described apparatus 200 (300) for an air conditioner. The apparatus 200 (300) for an air conditioner is mounted to an air conditioner body. The mounting relationships described herein are not limited to placement within a product, but include mounting connections to other components of a product, including but not limited to physical, electrical, or signal transmission connections, etc. Those skilled in the art will appreciate that the apparatus 200 (300) for an air conditioner may be adapted to a viable product body to achieve other viable embodiments.

Embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for an air conditioner.

The computer readable storage medium may be a transitory computer readable storage medium or a non-transitory computer readable storage medium.

Embodiments of the present disclosure may be embodied in a software product stored on a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of a method according to embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium including: a plurality of media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Onl air conditioner memory, a random access memory (RAM, random Access Memor air conditioner), a magnetic disk or an optical disk, and the like, and also can be a transient storage medium.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may involve structural, logical, electrical, process, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. Moreover, the terminology used in the present application is for the purpose of describing embodiments only and is not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a," "an," and "the" (the) are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, when used in this application, the terms "comprises," "comprising," and/or "includes," and variations thereof, mean that the stated features, integers, steps, operations, elements, and/or components are present, but that the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof is not precluded. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method or apparatus comprising such elements. In this context, each embodiment may be described with emphasis on the differences from the other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method sections disclosed in the embodiments, the description of the method sections may be referred to for relevance.

Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. The skilled artisan may use different methods for each particular application to achieve the described functionality, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.

In the embodiments disclosed herein, the disclosed methods, articles of manufacture (including but not limited to devices, apparatuses, etc.) may be practiced in other ways. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the units may be merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form. The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to implement the present embodiment. In addition, each functional unit in the embodiments of the present disclosure may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than that disclosed in the description, and sometimes no specific order exists between different operations or steps. For example, two consecutive operations or steps may actually be performed substantially in parallel, they may sometimes be performed in reverse order, which may be dependent on the functions involved. Each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A gas-liquid separation apparatus for an air conditioner, comprising:

the gas-liquid separation part (11) comprises a gas-liquid inlet (111), a liquid outlet (113) and an exhaust port (112), wherein the gas-liquid inlet (111) is used for being communicated with a first heat exchanger outlet of a refrigerant circulation system, and the liquid outlet (113) is used for being communicated with a second heat exchanger inlet of the refrigerant circulation system;

a valve body (115) arranged on the exhaust port (112), wherein the valve body (115) is used for being opened in a refrigerant purifying state of the air conditioner (100) so as to discharge non-condensable gas in the refrigerant;

the heat exchange part (12) is a hollow cavity with two open ends, the heat exchange part (12) is communicated with or passes through a low-temperature refrigerant pipe of the refrigerant circulation system, and the heat exchange part (12) is used for carrying out heat exchange with the gas-liquid separation part (11).

2. A gas-liquid separation apparatus according to claim 1, wherein,

the heat exchange part (12) is arranged in the gas-liquid separation part (11).

3. A gas-liquid separation apparatus according to claim 1, wherein,

the hollow cavity of the heat exchange part (12) is in a spiral or spiral structure.

4. An air conditioner, comprising:

the refrigerant circulation system comprises a compressor (23), a first heat exchanger and a second heat exchanger, wherein an outlet of the compressor (23) is connected with an inlet of the first heat exchanger, an outlet of the first heat exchanger is connected with an inlet of the second heat exchanger, and an outlet of the second heat exchanger is communicated with an inlet of the compressor (23);

the gas-liquid separation apparatus according to claim 1 or 2, connected to the refrigerant circulation system, and located between the first heat exchanger and the second heat exchanger.

5. The air conditioner as set forth in claim 4, wherein said refrigerant circulation system further comprises:

the low-temperature refrigerant pipe is connected with the outlet of the second heat exchanger and the inlet of the compressor (23), and penetrates through the hollow cavity of the heat exchange part (12) of the gas-liquid separation device (10) or is communicated with the hollow cavity.

6. An air conditioner according to claim 4 or 5, further comprising:

the first electronic expansion valve (28) is arranged on a connecting pipeline of the indoor heat exchanger (21) and the gas-liquid separation device (10);

a second electronic expansion valve (29) which is installed on a connection pipeline between the outdoor heat exchanger (22) and the gas-liquid separation device (10);

in a refrigeration state, the first electronic expansion valve (28) is used for throttling, and the second electronic expansion valve (29) is fully opened;

in a heating state, the first electronic expansion valve (28) is fully opened, and the second electronic expansion valve (29) is used for throttling.

7. The air conditioner as set forth in claim 6, wherein said refrigerant circulation system further comprises:

the first four-way valve (24) comprises a first opening, a second opening, a third opening and a fourth opening, wherein the first opening is communicated with an outlet of the indoor heat exchanger (21), and the third opening is communicated with an inlet of the indoor heat exchanger (21);

the second four-way valve (25) comprises a first port, a second port, a third port and a fourth port, wherein the first port is communicated with a liquid outlet (113) of the gas-liquid separation device (10), the second port is communicated with a fourth port of the first four-way valve (24), and the third port is communicated with a gas-liquid inlet (111) of the gas-liquid separation device (10);

the third four-way valve (26) comprises a first valve port, a second valve port, a third valve port and a fourth valve port, wherein the first valve port is communicated with the outlet of the outdoor heat exchanger (22), the second valve port is communicated with the fourth port of the second four-way valve (25), and the third valve port is communicated with the inlet of the outdoor heat exchanger (22);

the state four-way valve (27) comprises a first communication port, a second communication port, a third communication port and a fourth communication port, wherein the first communication port is communicated with an outlet of the compressor (23), the second communication port is communicated with a fourth valve port of the third four-way valve (26), the third communication port is communicated with an inlet of the compressor (23), and the fourth communication port is communicated with a second opening of the first four-way valve (24).

8. The air conditioner according to claim 7, wherein,

in a refrigeration state, a first communication port of the state four-way valve (27) is communicated with a second communication port, a third communication port is communicated with a fourth communication port, a first opening of the first four-way valve (24) is communicated with the second opening, a third opening of the first four-way valve is communicated with the fourth opening, a first opening of the second four-way valve (25) is communicated with the second opening, a third opening of the second four-way valve is communicated with the fourth opening, a first valve port of the third four-way valve (26) is communicated with the second valve port, and a third valve port of the third four-way valve is communicated with the fourth valve port;

under the heating state, the first communication port and the fourth communication port of state four-way valve (27) are communicated, the second communication port and the third communication port are communicated, the first opening and the fourth opening of first four-way valve (24) are communicated, the second opening and the third opening are communicated, the first opening and the fourth opening of second four-way valve (25) are communicated, the second opening and the third opening are communicated, the first valve port and the fourth valve port of third four-way valve (26) are communicated, and the second valve port and the third valve port are communicated.

9. The air conditioner according to claim 8, wherein,

the first electronic expansion valve (28) is arranged on a connecting pipeline of the fourth opening and the second opening;

the second electronic expansion valve (29) is arranged on a connecting pipeline of the fourth port and the second valve port.

10. A method for an air conditioner, which is applied to the air conditioner, the method comprising:

opening a refrigerant purifying mode;

acquiring the current running frequency of the compressor;

according to the current operating frequency of the compressor, the operating frequency of the outdoor unit fan is adjusted so that the refrigerant at the outlet of the first heat exchanger is in a two-phase state;

controlling the outdoor unit fan to operate for a first set period of time at the adjusted fan operating frequency;

opening a valve body of the gas-liquid separation device to exhaust for a second set period of time;

closing the valve body of the gas-liquid separation device.

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