CN112393471B

CN112393471B - Gas-liquid separator and air conditioning system

Info

Publication number: CN112393471B
Application number: CN201910750198.8A
Authority: CN
Inventors: 吴林忠; 谭永翔
Original assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Current assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2022-07-26
Anticipated expiration: 2039-08-14
Also published as: CN112393471A

Abstract

The embodiment of the application provides a gas-liquid separator and an air conditioning system, wherein the gas-liquid separator comprises a top cover, the top cover comprises a first fluid inlet and a second fluid inlet, and the first fluid inlet and the second fluid inlet are arranged at intervals; the top cover further comprises a first cavity and a second cavity; the top cover further comprises a first separating part, and the first separating part is located between the first cavity and the second cavity and isolates the first cavity from the second cavity. In this application, this vapour and liquid separator's top cap includes two first fluid inlets and the second fluid import that sets up at an interval each other, and through independent pipeline intercommunication between first fluid inlet and second fluid import and the part that corresponds to play the effect of simplifying air conditioning system's connecting line, first cavity and second cavity are kept apart to first partition portion, make two cavities can the autonomous working, and reduce the risk of the mutual streaming of refrigerant in two cavities, improve the accuracy that the refrigerant flows.

Description

Gas-liquid separator and air conditioning system

Technical Field

The application relates to the technical field of air conditioners, in particular to a gas-liquid separator and an air conditioning system.

Background

The air-conditioning system is provided with a gas-liquid separator, the gas-liquid separator is connected with the heat exchanger and the compressor and used for separating gas-liquid two-phase refrigerants coming out of the heat exchanger, specifically, the unevaporated liquid refrigerants are stored in the gas-liquid separator, so that the refrigerants entering the compressor are all in a gas state, and the compressor damage caused by liquid impact on the compressor is avoided.

In the related art, the gas-liquid separator only has one fluid inlet, the fluid inlet needs to be connected with a three-way joint, the connecting end of the three-way joint and the heat exchanger needs to be connected with two connecting joints, and the pipeline design of the air conditioning system is complex.

Disclosure of Invention

In view of the above, embodiments of the present disclosure provide a gas-liquid separator and an air conditioning system, which can simplify a connection pipeline.

The embodiment of the application provides a gas-liquid separator, which comprises a top cover, wherein the top cover comprises a first fluid inlet and a second fluid inlet, and the first fluid inlet and the second fluid inlet are arranged at intervals;

the top cover further comprises a first cavity and a second cavity;

wherein the first fluid inlet is in communication with the first cavity, the second fluid inlet is in communication with the second cavity, and the top cap further comprises a first partition positioned between and separating the first cavity from the second cavity.

The utility model provides a vapour and liquid separator has first fluid import and the second fluid import that mutual interval set up, corresponding part is connected alone respectively to first fluid import and second fluid import, can simplify air conditioning system's connecting line, and this vapour and liquid separator's top cap sets up first partition portion, first cavity and second cavity are kept apart to this first partition portion for two cavities can the autonomous working, and reduce the risk of the mutual streaming of refrigerant in two cavities, improve the accuracy that the refrigerant flows.

In one possible design, the gas-liquid separator further comprises a draft tube connected with the top cover;

the draft tube comprises an open end;

the top cover further comprises a third cavity and a second partition part, the open end extends into the third cavity, the second partition part is located between the third cavity and the first cavity and isolates the third cavity from the first cavity, and the second partition part is located between the third cavity and the second cavity and isolates the third cavity from the second cavity.

In one possible design, the top cap further includes a fluid outlet and a fourth cavity, the fluid outlet being in communication with the fourth cavity;

the honeycomb duct also comprises a connecting end, the connecting end is connected with the side wall of the fourth cavity, and the honeycomb duct is communicated with the third cavity and the fourth cavity;

the top cover comprises a third partition part, wherein the third partition part is positioned between the fourth cavity and the third cavity and separates the fourth cavity from the third cavity, positioned between the fourth cavity and the first cavity and separates the fourth cavity from the first cavity, and positioned between the fourth cavity and the second cavity and separates the fourth cavity from the second cavity.

In one possible design, the top cover includes a body portion and a peripheral wall, the peripheral wall protruding from the body portion;

the first partition, the second partition, and the third partition are connected to the outer peripheral wall and the body portion.

In one possible design, the first partition portion is connected to each of the outer peripheral wall, the body portion, and the third partition portion;

the second partition part is connected to the outer peripheral wall, the body part, and the third partition part;

the third partition portion is connected to the outer peripheral wall and the body portion;

the peripheral wall, the first partition, the second partition and the body portion enclose the first cavity;

the outer peripheral wall, the first partition, the third partition and the body portion enclose the second cavity;

the peripheral wall, the second partition, the third partition and the body portion enclose the third cavity;

the third partition part and the body part enclose the fourth cavity, or the third partition part, the outer peripheral wall and the body part enclose the fourth cavity.

In one possible design, the fluid outlet, the first fluid inlet and the second fluid inlet are all provided in the body portion;

the body portion comprises a first channel, a second channel and a third channel;

the first fluid inlet is communicated with the first cavity through the first channel, the second fluid inlet is communicated with the second cavity through the second channel, and the fluid outlet is communicated with the fourth cavity through the third channel.

In one possible design, the body portion is provided with a first projection provided at an end of the body portion connected to the outer peripheral wall;

the second channel and the third channel are arranged on the first bump.

In one possible design, at least a portion of the first tab is located in the third cavity, the third cavity including a first top wall and a second top wall, the body portion forming the first top wall, the first tab located in the third cavity forming the second top wall;

the first separating part comprises a first end part and a second end part which are oppositely arranged, the first end part is connected with the body part, and the second end part is far away from the body part;

the second partition part comprises a third end part and a fourth end part which are oppositely arranged, the third end part is connected with the body part, and the fourth end part is far away from the body part;

the open end extends into the third cavity and is opposite to the first top wall;

the distance between the end face of the open end and the first top wall is smaller than the distance between the first end and the second end, and the distance between the end face of the open end and the first top wall is smaller than the distance between the third end and the fourth end.

In one possible design, the gas-liquid separator further comprises a housing comprising a sidewall, a bottom wall, and a fifth cavity;

at least part of the draft tube is positioned in the fifth cavity;

the top cover is connected to one end of the side wall far away from the bottom wall.

Meanwhile, an embodiment of the present application further provides an air conditioning system, which includes:

a compressor;

a first indoor heat exchanger;

a second indoor heat exchanger;

an outdoor heat exchanger;

a gas-liquid separator comprising a head cover comprising a first fluid inlet, a second fluid inlet, and a fluid outlet, the first fluid inlet and the second fluid inlet being spaced apart from one another;

wherein the fluid outlet is in communication with an inlet of the compressor, the first fluid inlet is connected to the second indoor heat exchanger, and the second fluid inlet is connected to the outdoor heat exchanger.

The air-conditioning system's of this application vapour and liquid separator has first fluid import and the second fluid import that mutual interval set up, and first fluid import is connected with the indoor heat exchanger of second, and the second fluid import is connected with outdoor heat exchanger, and first fluid import and second fluid import are the corresponding part of independent connection respectively, can simplify air-conditioning system's connecting line.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of an air conditioning system provided herein in one embodiment;

FIG. 2 is a flow chart of the air conditioning system of FIG. 1 in a cooling mode;

FIG. 3 is a flow chart of a heating mode of the air conditioning system of FIG. 1;

FIG. 4 is a flow chart of the air conditioning system of FIG. 1 in a heating and dehumidifying mode;

FIG. 5 is a schematic diagram of the gas-liquid separator of FIG. 1 in one embodiment;

FIG. 6 is a schematic view of the structure of FIG. 5 from another perspective;

FIG. 7 is a bottom view of FIG. 5;

FIG. 8 is a sectional view taken along line A-A of FIG. 7;

FIG. 9 is an enlarged view of a portion I of FIG. 8;

FIG. 10 is a schematic view of the gas-liquid separator of FIG. 5 with the housing removed;

FIG. 11 is a schematic view of the structure of FIG. 10 from another perspective;

FIG. 12 is a top view of FIG. 10;

FIG. 13 is a sectional view taken along line B-B of FIG. 12;

FIG. 14 is an enlarged view of a portion II of FIG. 13;

FIG. 15 is a schematic structural view of the top cover of FIG. 10;

FIG. 16 is a schematic view of the structure of FIG. 15 from another perspective;

FIG. 17 is a schematic view of the structure of FIG. 15 from yet another perspective;

fig. 18 is a schematic structural view of fig. 15 from yet another angle.

Reference numerals are as follows:

1-a gas-liquid separator;

11-a top cover;

111-a body portion;

111 a-a first cavity;

111 b-a second cavity;

111 c-a third cavity;

111 d-fourth chamber;

111 f-mounting holes;

111 h-first bump;

111 k-second bump;

112-a peripheral wall;

112 a-a stepped slot;

113-a first partition;

114-a second partition;

115-a third partition;

116-a first fluid inlet;

117-second fluid inlet;

118-a fluid outlet;

12-a draft tube;

121-a connecting end;

122-open end;

13-a housing;

131-a fifth cavity;

132-a side wall;

2-a compressor;

3-a first indoor heat exchanger;

4-a fluid switching device;

5-outdoor heat exchanger;

6-a second indoor heat exchanger;

7-a first flow regulating device;

71-a valve unit;

72-a throttling unit;

8-a second flow regulating device;

9-air door.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be noted that the directional terms such as "upper", "lower", "left", "right", etc. described in the embodiments of the present application are described in the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element through intervening elements.

The embodiment of the application provides a top cover 11 of a gas-liquid separator 1, and in an air conditioning system, the gas-liquid separator 1 is used for separating gas-liquid two-phase refrigerants. As shown in fig. 5 and 6, the gas-liquid separator 1 includes a housing 13, a flow guide tube 12 and a top cover 11, wherein the housing 13 includes a side wall 132, a bottom wall and a fifth cavity 131, the side wall 132 and the bottom wall are fixedly connected or integrally formed, and the fifth cavity 131 is enclosed by the side wall and the bottom wall; at least part of the draft tube 12 is located in the fifth cavity 131, and the draft tube 12 is used for circulation of the refrigerant; and the top cover 11 is fixed on the shell 13, and the top cover 11 is fixed on one end of the side wall 132 far away from the bottom wall, so that the fifth cavity 131 of the shell 13 is sealed by the top cover 11.

Meanwhile, as shown in fig. 5, the top cover 11 includes at least a first fluid inlet 116 and a second fluid inlet 117, and the first fluid inlet 116 and the second fluid inlet 117 are spaced apart from each other, so that the first fluid inlet 116 and the second fluid inlet 117 are separately connected to corresponding components, respectively, thereby simplifying a connection pipeline of the air conditioning system.

Accordingly, the inner cavity of the top cover 11 includes at least a first cavity 111a and a second cavity 111 b; wherein the first fluid inlet 116 is communicated with the first cavity 111a, and the second fluid inlet 117 is communicated with the second cavity 111 b; the top cover 11 further includes a first partition portion 113, the first partition portion 113 is located between the first cavity 111a and the second cavity 111b, and the first partition portion 113 can be used for partitioning the first cavity 111a from the second cavity 111 b.

In this application, the top cover 11 of the gas-liquid separator 1 includes at least two fluid inlets spaced from each other, that is, at least includes the first fluid inlet 116 and the second fluid inlet 117, the refrigerant can enter the first cavity 111a of the top cover 11 through the first fluid inlet 116, and/or the refrigerant can enter the second cavity 111b of the top cover 11 through the second fluid inlet 117, therefore, when the fluid inlet of the gas-liquid separator 1 is communicated with the heat exchanger, the two fluid inlets can be respectively communicated with the heat exchanger through two relatively independent pipelines, thereby simplifying the pipeline connected with the gas-liquid separator, and improving the working efficiency of the gas-liquid separator 1, the top cover 11 thereof, and the air conditioning system.

Meanwhile, in the present application, the first cavity 111a and the second cavity 111b of the top cover 11 are further separated by the first separating portion 113, and the arrangement of the first separating portion 113 can reduce the risk that the refrigerant entering through the first fluid inlet 116 enters the second cavity 111b and reduce the risk that the refrigerant entering through the second fluid inlet 117 enters the first cavity 111a, that is, the risk that the refrigerant of the first cavity 111a is streamed to the second cavity 111b when the first fluid inlet 116 works and the second fluid inlet 117 does not work, and the risk that the refrigerant of the second cavity 111b is streamed to the first cavity 111a when the first fluid inlet 116 does not work and the second fluid inlet 117 works can be reduced, thereby improving the accuracy of the refrigerant flow.

In one possible design, as shown in fig. 8 to 11, the top cover 11 is connected to the draft tube 12 of the gas-liquid separator 1, as shown in fig. 13 and 14, the draft tube 12 includes an open end 122, wherein the open end 122 may be a gaseous refrigerant inlet of the draft tube 12, and the gaseous refrigerant enters the inner cavity of the draft tube 12 through the open end 122.

Meanwhile, as shown in fig. 15 and 16, the top cover 11 may further include a third cavity 111c and a second partition 114, wherein the second partition 114 is located between the third cavity 111c and the first cavity 111a and between the third cavity 111c and the second cavity 111b, that is, the second partition 114 is used for partitioning the third cavity 111c from the first cavity 111a and for partitioning the third cavity 111c from the second cavity 111b, and the open end 122 of the flow guide tube 12 extends into the third cavity 111 c. It can be understood that the second partition 114 is used for separating the open end 122 of the draft tube 12 from the first fluid inlet 116 and the second fluid inlet 117, so as to reduce the risk that the gas-liquid two-phase refrigerant flowing in through the first fluid inlet 116 or the second fluid inlet 117 directly enters the draft tube 12, thereby helping to ensure that the gaseous refrigerant flows into the open end 122 of the draft tube 12.

In the gas-liquid separator 1, as shown in fig. 8, the top cover 11 is connected to the top of the housing 13, and after the refrigerant in the inner cavity of the top cover 11 (including the first cavity 111a, the second cavity 111b, the third cavity 111c, and the like) enters the inner cavity of the top cover 11 through the first fluid inlet 116 and/or the second fluid inlet 117, under the action of gravity, the refrigerant flows toward the fifth cavity 131 of the housing 13, meanwhile, under the action of gravity, the gas-liquid two-phase refrigerant is separated (including complete separation and partial separation), and the separated gas-phase refrigerant enters the third cavity 111c and enters the inner cavity of the draft tube 12 through the open end 122.

It should be noted that, because the gas-liquid two-phase refrigerant may not be completely separated in the fifth inner cavity 131 of the housing 13, the refrigerant entering the third cavity 111c and the inner cavity of the draft tube 12 includes a gaseous refrigerant and a small amount of a liquid refrigerant. When the gas-liquid two-phase refrigerant is completely separated in the fifth inner cavity 131 of the housing 13, the refrigerant entering the third cavity 111c and the inner cavity of the draft tube 12 is a gaseous refrigerant.

In this embodiment, the third cavity 111c is arranged to communicate the draft tube 12 with the top cover 11, so that the gas-liquid separated refrigerant (which may include a small amount of liquid refrigerant) is guided into the draft tube 12. Meanwhile, the top cover 11 further includes a second separating portion 114, and the second separating portion 114 is configured to separate the third cavity 111c from the first cavity 111a and separate the third cavity 111c from the second cavity 111b, so that a risk that a refrigerant in the first cavity 111a directly enters the third cavity 111c can be reduced, and a risk that a refrigerant in the second cavity 111b directly enters the third cavity 111c can be reduced. The refrigerants in the first cavity 111a and the second cavity 111b generally include liquid refrigerants and gaseous refrigerants, and thus in this embodiment, the second partition 114 is disposed to reduce the risk of the liquid refrigerants entering the draft tube 12.

Optionally, as shown in fig. 9 and fig. 14, the draft tube 12 further includes a connecting end 121, the connecting end 121 may be a gaseous refrigerant outlet of the draft tube 12, the gaseous refrigerant enters the inner cavity of the draft tube 12 through the open end 122 and is then discharged from the inner cavity of the draft tube 12 through the connecting end 121, and the connecting end 121 may also be used to connect with the top cover 11, so as to implement connection between the draft tube 12 and the top cover 11.

As shown in fig. 15 and 16, the top cover 11 further includes a fluid outlet 118 and a fourth cavity 111d, the fluid outlet 118 is communicated with the fourth cavity 111d, and optionally, in an air conditioning system, the fluid outlet 118 can be used to communicate with a compressor. Meanwhile, the connecting end 121 of the draft tube 12 is fixedly connected with the side wall of the fourth cavity 111d, so that the draft tube 12 is fixedly connected with the top cover 11.

The third cavity 111c and the fourth cavity 111d are communicated with the draft tube 12. As shown in fig. 15 and 16, the top cover 11 further includes a third separating portion 115, and the third separating portion 115 is located between the fourth cavity 111d and the third cavity 111c, between the fourth cavity 111d and the first cavity 111a, and between the fourth cavity 111d and the second cavity 111b, so that the third separating portion 115 is used for separating the fourth cavity 111d from the third cavity 111c, separating the fourth cavity 111d from the first cavity 111a, and separating the fourth cavity 111d from the second cavity 111 b.

In this embodiment, in the top cover 11, the fourth chamber 111d is communicated with the compressor through the fluid outlet 118, and the fourth chamber 111d is communicated with the fluid outlet 118 and the draft tube 12, i.e. gaseous refrigerant (possibly including a small amount of liquid refrigerant) entering the interior of the draft tube 12 through the open end 122 of the draft tube 12 can enter the compressor through the connecting end 121, the fourth chamber 111d and the fluid outlet 118, therefore, when the third partition 115 partitions the fourth cavity 111d from the first cavity 111a and partitions the fourth cavity 111d from the second cavity 111b, the risk that the refrigerant of the first cavity 111a directly enters the fourth cavity 111d can be reduced, the risk that the refrigerant of the second cavity 111b directly enters the fourth cavity 111d can be reduced, therefore, the risk of liquid impact damage of the compressor caused by the liquid refrigerant entering the compressor through the fourth cavity 111d is reduced, and the safety of the compressor is improved.

Meanwhile, when the third partition 115 partitions the third cavity 111c from the fourth cavity 111d, the risk that the refrigerant of the third cavity 111c directly enters the fourth cavity 111d without passing through the flow guide pipe 12 is reduced, and it can be understood that, when the refrigerant in the third cavity 111c is mixed with the liquid refrigerant and the refrigerant flows in the flow guide pipe 12, the liquid refrigerant can be further condensed or settled, so that the liquid refrigerant is further removed, that is, the risk that the liquid refrigerant enters the compressor through the fourth cavity 111d to cause liquid impact damage can be further reduced, and the safety of the compressor is improved.

Optionally, when the draft tube 12 is a round tube, the sidewall of the fourth cavity 111d may have a cylindrical structure, and the fourth cavity 111d in this shape is convenient to connect with the draft tube 12, and of course, the sidewall of the fourth cavity 111d may also have other shapes as long as it can be fixedly connected with the draft tube 12.

In a possible design, as shown in fig. 16, an annular groove is opened on the inner wall of the fourth chamber 111d, the annular groove has a bottom wall and a side wall, the connecting end 121 of the draft tube 12 abuts against the bottom wall of the annular groove, and the draft tube 12 is fixedly connected with the side wall of the annular groove, for example, one of the side wall of the annular groove and the outer wall of the draft tube 12 is provided with a threaded protrusion, and the other is provided with a threaded groove, so that the draft tube 12 is in threaded connection with the fourth chamber 111 d.

In another possible design, the side wall of the annular groove and the outer wall of the draft tube 12 are provided with a snap, and the other is provided with a clamping groove, so that the draft tube 12 is connected with the fourth cavity 111d in a snap-fit manner.

Of course, the fourth cavity 111d and the draft tube 12 may also be fixedly connected through other structures, and the connection structure between the fourth cavity and the draft tube is not limited in the present application.

As described above, in the top cover 11 of the gas-liquid separator 1, as shown in fig. 15 and 16, by providing the first partition portion 113, the second partition portion 114, and the third partition portion 115, any of the four cavities, i.e., the first cavity 111a, the second cavity 111b, the third cavity 111c, and the fourth cavity 111d, is not communicated with each other, so that the risk of series flow of the refrigerant among the cavities is reduced, and the accuracy of the refrigerant flowing through the top cover 11 is improved.

Specifically, as shown in fig. 15 and 16, all of the first partition 113, the second partition 114, and the third partition 115 may have an arc-shaped structure or a curved structure, so as to reduce resistance of the refrigerant flowing in the inner cavity of the top cover 11. It should be understood that the first partition 113, the second partition 114, and the third partition 115 may have other shapes and structures, and do not affect the flow of the refrigerant, and the present application is not limited thereto.

In one possible design, as shown in fig. 15 to 18, the top cover 11 includes a body 111 and an outer peripheral wall 112, wherein the outer peripheral wall 112 protrudes from the body 111, and the outer peripheral wall 112 may be a cylinder, or may be a rectangle, and the outer peripheral wall 112 and the body 111 enclose an inner cavity of the top cover 11.

Specifically, the first partition 113, the second partition 114, and the third partition 115 are located in an inner cavity surrounded by the outer peripheral wall 112 and the body 111, and are connected to the outer peripheral wall 112 and the body 111, wherein the first partition 113, the second partition 114, and the third partition 115 may be directly connected to the outer peripheral wall 112 and the body 111, or may be indirectly connected to the outer peripheral wall and the body 111 through another member, as long as the four cavities are surrounded.

In this embodiment, the outer peripheral wall 112 of the top cover 11 is connected to the housing 13 of the gas-liquid separator 1, specifically, as shown in fig. 15 and 16, the outer peripheral wall 112 is provided with a stepped groove 112a, as shown in fig. 9, the side wall 132 of the housing 13 is located in the stepped groove 112a, the side wall 132 of the housing 13 abuts against the bottom wall of the stepped groove 112a, and meanwhile, the side wall of the housing 13 is also fixedly connected to the side wall of the stepped groove 112a, so that the connection between the top cover 11 and the housing 13 is realized, and the inner cavity of the top cover 11 is communicated with the fifth cavity 131 of the housing 13.

Alternatively, one of the side wall of the stepped groove 112a and the side wall 132 of the housing 13 is provided with a screw protrusion, and the other is provided with a screw groove, so that the housing 13 is screw-coupled with the top cover 11; alternatively, one of the side walls of the stepped groove 112a and the side wall 132 of the housing 13 is provided with a snap, and the other is provided with a snap groove, so that the housing 13 is connected to the top cover 11 in a snap manner. Of course, the housing 13 and the top cover 11 may be connected by other structures, and the present application does not limit the specific connection manner between the two.

More specifically, in one possible design, as shown in fig. 15 and 16, the first partition 113 is connected to each of the outer peripheral wall 112, the body portion 111, and the third partition 115, and the second partition 114 is connected to each of the outer peripheral wall 112, the body portion 111, and the third partition 115; the third partition 115 is connected to the outer peripheral wall 112 and the body portion 111, so that the outer peripheral wall 112, the first partition 113, the second partition 114, and the body portion 111 enclose a first cavity 111 a; the outer peripheral wall 112, the first partition 113, the third partition 115, and the body portion 111 enclose a second cavity 111 b; the outer peripheral wall 112, the second partition 114, the third partition 115, and the body portion 111 enclose a third cavity 111 c; the third partition 115 and the body 111 enclose a fourth cavity 111d, or the third partition 115, the outer peripheral wall 112 and the body 111 enclose the fourth cavity 111 d.

In this embodiment, the first separating portion 113 participates in enclosing the first cavity 111a and the second cavity 111b, that is, the first separating portion 113 is a side wall of the first cavity 111a and the second cavity 111b, the second separating portion 114 participates in enclosing the first cavity 111a and the third cavity 111c, that is, the second separating portion 114 is a side wall of the first cavity 111a and the third cavity 111c, and the third separating portion 115 participates in enclosing the second cavity 111b, the third cavity 111c and the fourth cavity 111d, that is, the third separating portion 115 is a side wall of the second cavity 111b, the third cavity 111c and the fourth cavity 111d, so that components can be saved, the volume of each cavity can be increased, the weight of the top cover 11 can be reduced, and the cost can be saved.

On the other hand, as described above, the first partition 113, the second partition 114 and the third partition 115 are connected, so that the strength and rigidity of the top cover 11 can be increased, and the bending regions of the cavities can be reduced, thereby reducing the resistance of the refrigerant flowing in the cavities, saving energy, and reducing the risk of turbulent flow during the refrigerant flowing process.

In the embodiment shown in fig. 15 and 16, when the draft tube 12 is a circular tube, in order to facilitate connection with the draft tube 12, the sidewall of the fourth chamber 111d has a cylindrical structure, i.e., the third partition 115 has a circular arc-shaped or circular cross-section and is connected to the outer circumferential wall 112.

In the above embodiments, as shown in fig. 15 to 18, the fluid outlet 118, the first fluid inlet 116 and the second fluid inlet 117 of the top cover 11 are all disposed on the body 111; the body part 111 includes a first channel, a second channel, and a third channel; wherein the first fluid inlet 116 is communicated with the first cavity 111a through a first passage, the second fluid inlet 117 is communicated with the second cavity 111b through a second passage, and the fluid outlet 118 is communicated with the fourth cavity 111d through a third passage.

In this embodiment, when the refrigerant circulates in the first channel, the second channel, and the third channel, the inner cavities of the three channels can play a role of homogenizing the fluid, so that the refrigerant entering the first cavity 111a and the second cavity 111b has high uniformity, and meanwhile, the refrigerant discharged from the fluid outlet 118 has high uniformity, thereby further improving the working efficiency of the gas-liquid separator 1.

Specifically, as shown in fig. 15 and 16, in the top cover 11, the outer peripheral wall 112 protrudes with respect to the body portion 111, and at the same time, the body portion 111 is further provided with a first protrusion 111h, the first protrusion 111h protrudes with respect to the body portion 111, and a protruding direction of the first protrusion 111h with respect to the body portion 111 is the same as a protruding direction of the outer peripheral wall 112 with respect to the body portion 111, and the second passage and the third passage are provided in the first protrusion 111h and the body portion 111.

In this embodiment, by providing the first protrusion 111h, the arrangement space of the second channel and the third channel can be increased, so as to increase the sectional areas of the second channel and the third channel, and improve the uniformity of the circulation of the refrigerant in the second channel and the third channel.

Alternatively, as shown in fig. 15, a part of the first protrusion 111h is located in a cavity surrounded by the peripheral wall 112 and the body 111, and another part of the first protrusion is located outside the cavity, and the first protrusion 111h may participate in the surrounding of the second cavity 111b, that is, the second cavity 111b is surrounded by the first partition 113, the peripheral wall 112, the third partition 115 and the first protrusion 111 h. Similarly, a part of the first protrusion 111h is located in the third cavity 111c, and the first protrusion 111h can participate in enclosing to form the third cavity 111c, that is, the third cavity 111c is enclosed by the body 111, the first protrusion 111h, the second partition 114, the third partition 115 and the outer peripheral wall 112, and since the first protrusion 111h located in the third cavity 111c protrudes from the body 111, the depth of the third cavity 111c is different.

In this gas-liquid separator 1, the third cavity 111c of the top cover 11 has a top wall that is distant from the bottom wall 133 of the housing 13, and the top wall includes a first top wall and a second top wall, the body portion 111 forms the first top wall of the third cavity 111c, and the first projection 111h located in the third cavity 111c forms the second top wall.

Specifically, in the present embodiment, the first fluid inlet 116 is disposed on the top wall of the first cavity 111a, and when the top cover 11 is mounted on the housing 13, as shown in fig. 5 and 6, the first fluid inlet 116 is located on the top wall of the main body 111 in the top cover 11, and accordingly, the first fluid inlet 116 communicates with the first cavity 111a through a first channel, and the first channel communicates with the top wall of the first cavity 111 a. Meanwhile, the second fluid inlet 117 is disposed on the sidewall of the top cover 11 and communicates with the second cavity 111b through a second channel disposed on the first protrusion 111h, and the second channel communicates with the sidewall of the second cavity 111 b.

In addition, the fluid outlet 118 and the second fluid inlet 117 are disposed at two sides of the first protrusion 111h, and the third channel extends along the first protrusion 111h and is communicated with the fourth cavity 111d through the third channel.

The top cover 11 is further provided with one or more second protrusions 111k, the second protrusions 111k are disposed at one end of the body portion 111 connected to the outer peripheral wall 112, and can be disposed in any one of the first cavity 111a, the second cavity 111b, and the third cavity 111c, and the second protrusions 111k are provided with mounting holes 111f for connecting with other components of the air conditioning system.

In one possible design, as shown in fig. 15, the first separating portion 113 includes a first end portion and a second end portion, which are oppositely disposed, the first end portion is connected to the body portion 111, and the second end portion is far away from the body portion 111; similarly, the second separating portion 114 includes a third end portion and a fourth end portion, which are oppositely disposed, the third end portion is connected to the main body portion 111, and the fourth end portion is far away from the main body portion 111. The open end 122 of the flow guide tube 12 extends into the third cavity 111c and is disposed opposite to the first top wall (formed by the body 111), and a distance between the end surface of the open end 122 and the first top wall (the body 111) is smaller than a distance between the first end and the second end, and is smaller than a distance between the third end and the fourth end, and meanwhile, a distance between the end of the open end 122 and the first top wall is also smaller than a distance between the second top wall (the first protruding block 111h) and the first top wall (the body 111).

With such an arrangement, the risk that the gas-liquid two-phase refrigerant entering the first cavity 111a or the second cavity 111b directly enters the third cavity 111c can be reduced, so that the risk that the liquid refrigerant enters the compressor is further reduced, and the safety of the compressor is improved.

To sum up, in this application, set up the first cavity 111a and the second cavity 111b that separate each other through top cap 11 at vapour and liquid separator 1, can not only optimize vapour and liquid separator's function, improve its work efficiency, can also simplify vapour and liquid separator 1's pipeline.

Meanwhile, an embodiment of the present application further provides an air conditioning system, as shown in fig. 1 to 4, the air conditioning system includes: a compressor 2, a first indoor heat exchanger 3, a second indoor heat exchanger 6, an outdoor heat exchanger 5 and a gas-liquid separator 1, wherein the gas-liquid separator 1 is the gas-liquid separator 1 described in any of the above embodiments. In this air conditioning system, the fluid outlet 118 of the gas-liquid separator 1 communicates with the inlet of the compressor 2, the first fluid inlet 116 of the gas-liquid separator 1 is connected to the first indoor heat exchanger 3, and the second fluid inlet 117 is connected to the outdoor heat exchanger 5.

It should be noted that, in the embodiment of the present application, the sequential communication only illustrates a sequential relationship of connection between the respective devices, and other devices, such as a butt joint, a stop valve, and the like, may also be included between the respective devices.

In some embodiments, the air conditioning system further comprises a fluid switching device 4, a first flow regulating device 7, and a second flow regulating device 8. Alternatively, the first flow regulating device 7 may be a combination valve, and the second flow regulating device 8 may be a combination valve or an electronic expansion valve with a communicating function.

As shown in fig. 1, the fluid switching device 4 includes a first port i, a second port ii, a third port iii, and a fourth port iv, where the first port i is communicated with the second fluid inlet 117 of the gas-liquid separator 1, the second port ii is communicated with the outdoor heat exchanger 5, the third port iii is communicated with the second indoor heat exchanger 6, and the fourth port iv is communicated with the inlet of the second indoor heat exchanger 6 and/or the first flow rate adjusting device 7.

One end of the first flow regulating device 7 is connected with the outdoor heat exchanger 5, and the other end is connected with the fourth interface iv of the fluid switching device 4 and the first indoor heat exchanger 3. The second flow rate adjustment device 8 is provided to the inlet line of the first indoor heat exchanger 3.

When the air conditioning system is in a refrigeration mode, the second interface II and the third interface III of the fluid switching device 4 are communicated, the first flow regulating device 7 plays a role in communication, the second flow regulating device 8 plays a role in throttling, and the compressor 2, the second indoor heat exchanger 6, the outdoor heat exchanger 5, the first flow regulating device 7, the second flow regulating device 8, the first indoor heat exchanger 3 and the gas-liquid separator 1 are communicated to form a loop.

As shown in fig. 2, the direction of the arrow is the flowing direction of the refrigerant, the refrigerant enters the second indoor heat exchanger 6 from the outlet of the compressor 2, flows through the second indoor heat exchanger 6 (at this time, the damper 9 is closed), passes through the fluid switching device 4, and enters the outdoor heat exchanger 5 for heat exchange, at this time, the first flow regulating device 7 plays a role of conduction, enters the first indoor heat exchanger 3 after being throttled by the second flow regulating device 8, enters the gas-liquid separator 1 through the first fluid inlet 116 of the gas-liquid separator 1 after the heat exchange is performed by the first indoor heat exchanger 3, and after the gas-liquid separation, the refrigerant enters the compressor 2, thereby completing a refrigeration cycle.

In this mode, the refrigerant enters from the first fluid inlet 116 of the gas-liquid separator 1, and no refrigerant enters from the second fluid inlet 117.

In the air conditioning system, when it is in the cooling mode, as shown in fig. 2, since the second fluid inlet 117 of the gas-liquid separator 1 is connected to the first port i of the fluid switching device 4, and the second port ii is not communicated with the first port i, a pipeline from the second fluid inlet 117 to the outdoor heat exchanger 5 corresponds to a cavity, and the second fluid inlet 117 is communicated with the second cavity 111b of the top cover 11.

When the air conditioning system is in a heating mode, a first interface I and a second interface II of the fluid switching device 4 are conducted, a third interface III and a fourth interface IV are conducted, the second interface II and the third interface III are disconnected, the first flow regulating device 7 has a throttling function, the second flow regulating device 8 is closed, and the compressor 2, the second indoor heat exchanger 6, the outdoor heat exchanger 5, the first flow regulating device 7 and the gas-liquid separator 1 are communicated to form a loop.

As shown in fig. 3, the direction of the arrow is the flow direction of the refrigerant. After being discharged from the compressor 2, the refrigerant enters the second indoor heat exchanger 6, after heat exchange is performed in the second indoor heat exchanger 6 (at this time, the damper 9 is opened), the refrigerant passes through the fluid switching device 4, and since the first flow regulating device 7 plays a role in throttling and the second flow regulating device 8 is closed, the refrigerant passing through the fluid switching device 4 enters the outdoor heat exchanger 5 after being throttled by the first flow regulating device 7, flows through the fluid switching device 4 again, enters the gas-liquid separator 1 through the second fluid inlet 117, is subjected to gas-liquid separation, enters the compressor 2, and completes one heating cycle.

In this mode, the refrigerant enters from the second fluid inlet 117 of the gas-liquid separator 1, and no refrigerant enters from the first fluid inlet 116.

In the air conditioning system, when it is in the heating mode, as shown in fig. 3, since the first fluid inlet 116 of the gas-liquid separator 1 is connected to the outlet pipeline of the first indoor heat exchanger 3 and the second flow rate adjusting device 8 is closed, i.e., no refrigerant enters the first indoor heat exchanger 3, and no refrigerant is discharged from the first indoor heat exchanger 8, the pipeline from the first fluid inlet 116 to the outlet pipeline of the first indoor heat exchanger 3 corresponds to a cavity, and the first fluid inlet 1116 is communicated with the first cavity 111a of the top cover 11.

In this embodiment, in the heating mode or the cooling mode, the refrigerant enters the gas-liquid separator 1 from one of the first fluid inlet 116 or the second fluid inlet 117, the first cavity 111a and the second cavity 111b have a connecting cavity, and the top cover 11 is provided with the first partition portion 113 for partitioning the first cavity 111a and the second cavity 111b, so that the risk that the refrigerant entering the first cavity 111a flows to the second cavity 111b or the refrigerant entering the second cavity 111b flows to the first cavity 111a in the heating mode or the cooling mode can be reduced, and the risk that the refrigerant flows to the cavity and is stored in the cavity can be reduced due to the refrigerant containing part of the refrigerant oil, so that sufficient refrigerant oil flows back to the compressor 2, the risk that internal parts of the compressor 2 are abraded or seized due to less refrigerant oil is reduced, and the safety and the service life of the compressor 2 are improved, and the operational reliability of the air conditioning system is improved.

When the air conditioning system is in a heating and dehumidifying mode, the first interface I and the second interface II of the fluid switching device 4 are conducted, the third interface III and the fourth interface IV are conducted, the second interface II and the third interface III are disconnected, the first flow regulating device 7 plays a throttling role, the second flow regulating device 8 plays a throttling role, and the compressor 2, the second indoor heat exchanger 6, the outdoor heat exchanger 5, the first flow regulating device 7, the second flow regulating device 8, the first indoor heat exchanger 3 and the gas-liquid separator 1 are communicated to form a loop.

As shown in fig. 4, the arrow direction indicates the flow direction of the refrigerant. After being discharged from the compressor 2, the refrigerant enters the second indoor heat exchanger 6 for heat exchange (at this time, the damper 9 is opened), then passes through the fluid switching device 4, at this time, because the first flow regulating device 7 plays a throttling role and the second flow regulating device 8 plays a throttling role, after passing through the fluid switching device 4, a part of the refrigerant enters the outdoor heat exchanger 5 after being throttled by the first flow regulating device 7, after heat exchange in the outdoor heat exchanger 5, enters the gas-liquid separator 1 through the second fluid inlet 117, after being throttled by the second flow regulating device 8, the other part of the refrigerant enters the first indoor heat exchanger 3, after heat exchange by the first indoor heat exchanger 8, enters the gas-liquid separator 1 through the first fluid inlet 116, after gas-liquid separation of the two parts of the refrigerant by the gas-liquid separator 1, enters the compressor 2, and a one-time heating and dehumidifying cycle is completed.

In this mode, a part of the refrigerant enters the top cover 11 of the gas-liquid separator 1 through the first fluid inlet 116, and the other part of the refrigerant enters the top cover 11 of the gas-liquid separator 1 through the second fluid inlet 117. In this case, in the air conditioning system, the gas-liquid separator 1 can be independently communicated with the two heat exchangers (the first indoor heat exchanger 3 and the outdoor heat exchanger 5) at the same time, so that the refrigerants in the two heat exchangers can be separated, the work efficiency of the gas-liquid separator 1 can be improved, and the function of the gas-liquid separator can be improved.

In the air conditioning system of the present embodiment, the gas-liquid separator 1 has a first fluid inlet 116 and a second fluid inlet 117 that are independent of each other, and can be respectively communicated with the two heat exchangers (the first indoor heat exchanger 3 and the outdoor heat exchanger 5) through separate pipelines, and the refrigerant can simultaneously enter the gas-liquid separator 1 through the first fluid inlet 116 and the second fluid inlet 117, or enter the gas-liquid separator 1 through the first fluid inlet 116 or the second fluid inlet 117, so that on one hand, the working efficiency of the gas-liquid separator 1 can be improved and the functions thereof can be enriched; on the other hand, because the first fluid inlet 116 and the second fluid inlet 117 of the gas-liquid separator 1 are respectively communicated with the two heat exchangers through separate pipelines, compared with a gas-liquid separator with only one fluid inlet, the pipeline connected with the fluid inlet of the gas-liquid separator can reduce the use of a tee joint or other combined joints, so that the pipeline design of the air conditioning system is simpler, and the purpose of simplifying the pipeline design of the system is achieved.

In addition, the gas-liquid separator 1 of the present application can separate the first cavity 111a from the second cavity 111b by providing the first separating portion 113 on the top cover 11, thereby reducing the mixing of the refrigerants of the two cavities and improving the stability of the refrigerant flow.

In the air conditioning system of the present embodiment, the top cover 11 of the gas-liquid separator 1 of the present application is further provided with a second separating part 114, which can separate the third cavity 111c from the first fluid inlet 116 and the second fluid inlet 117, the open end 122 of the draft tube 12 extends into the third cavity 111c, and the connecting end 121 is fixedly connected to the sidewall of the fourth cavity 111d, so that a risk that a liquid refrigerant flowing from the first fluid inlet 116 and the second fluid inlet 117 directly enters the fourth cavity 111d through the open end 122, enters the compressor 2, and damages the compressor can be reduced.

In this embodiment, the first flow rate adjusting device 7 includes a valve unit 71 and a throttle unit 72, the valve unit 71 may be a one-way valve, and the throttle unit 72 may be an expansion valve. It should be understood that the first flow regulating device 7 may also be other valve elements or valve element combinations as long as the functions of communication and throttling are provided; of course, the valve unit 71 and the throttling unit 72 may be other valve elements or valve element combinations, the valve unit 71 only needs to have a conducting function, and the throttling unit 72 only needs to have a throttling function, which is not limited in the present application.

The first flow rate adjusting device 7 is turned on, at which time the valve unit 71 is opened and the throttle unit 72 is closed; the first flow regulating device 7 functions as a throttle, in which case the valve unit 71 is closed and the throttle unit 72 functions as a throttle.

The above description is only a preferred embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A gas-liquid separator, characterized in that the gas-liquid separator (1) comprises a head cover (11), the head cover (11) comprising a first fluid inlet (116) and a second fluid inlet (117), the first fluid inlet (116) and the second fluid inlet (117) being arranged at a distance from each other;

the top cover (11) further comprises a first cavity (111 a) and a second cavity (111 b);

wherein the first fluid inlet (116) communicates with the first cavity (111 a), the second fluid inlet (117) communicates with the second cavity (111 b), the top cover (11) further comprises a first partition (113), the first partition (113) is located between the first cavity (111 a) and the second cavity (111 b) and separates the first cavity (111 a) from the second cavity (111 b);

the gas-liquid separator (1) further comprises a shell (13), the shell (13) comprises a fifth cavity (131), and the first cavity (111 a) and the second cavity (111 b) are communicated with the fifth cavity (131).

2. The gas-liquid separator according to claim 1, wherein the gas-liquid separator (1) further comprises a draft tube (12), the draft tube (12) being connected to the head cover (11);

the draft tube (12) including an open end (122);

top cap (11) still include third cavity (111 c) and second partition (114), open end (122) stretches into third cavity (111 c), second partition (114) are located third cavity (111 c) with between first cavity (111 a) and keep apart third cavity (111 c) with first cavity (111 a), second partition (114) are located third cavity (111 c) with between second cavity (111 b) and keep apart third cavity (111 c) with second cavity (111 b).

3. The gas-liquid separator of claim 2, wherein the top cover (11) further comprises a fluid outlet (118) and a fourth cavity (111 d), the fluid outlet (118) being in communication with the fourth cavity (111 d);

the draft tube (12) further comprises a connecting end (121), the connecting end (121) is connected with the side wall of the fourth cavity (111 d), and the draft tube (12) is communicated with the third cavity (111 c) and the fourth cavity (111 d);

the top cover (11) comprises a third partition (115), the third partition (115) is located between the fourth cavity (111 d) and the third cavity (111 c) and isolates the fourth cavity (111 d) from the third cavity (111 c), between the fourth cavity (111 d) and the first cavity (111 a) and isolates the fourth cavity (111 d) from the first cavity (111 a), between the fourth cavity (111 d) and the second cavity (111 b) and isolates the fourth cavity (111 d) from the second cavity (111 b).

4. The gas-liquid separator according to claim 3, wherein the top cover (11) comprises a body portion (111) and an outer peripheral wall (112), the outer peripheral wall (112) protruding from the body portion (111);

the first partition (113), the second partition (114), and the third partition (115) are connected to the outer peripheral wall (112) and the body portion (111).

5. The gas-liquid separator according to claim 4, wherein the first partition portion (113) is connected to each of the outer peripheral wall (112), the body portion (111), and the third partition portion (115);

the second partition (114) is connected to the outer peripheral wall (112), the body portion (111), and the third partition (115);

the third partition portion (115) is connected to the outer peripheral wall (112) and the body portion (111);

the outer peripheral wall (112), the first partition (113), the second partition (114), and the body part (111) enclose the first cavity (111 a);

the outer peripheral wall (112), the first partition (113), the third partition (115), and the body portion (111) enclose the second cavity (111 b);

the peripheral wall (112), the second partition (114), the third partition (115), and the body portion (111) enclose the third cavity (111 c);

the third partition part (115) and the body part (111) enclose the fourth cavity (111 d), or the third partition part (115), the outer peripheral wall (112) and the body part (111) enclose the fourth cavity (111 d).

6. The gas-liquid separator according to claim 4 or 5, wherein the fluid outlet (118), the first fluid inlet (116) and the second fluid inlet (117) are all provided to the body portion (111);

the body portion (111) comprises a first channel, a second channel and a third channel;

the first fluid inlet (116) communicates with the first cavity (111 a) through the first passage, the second fluid inlet (117) communicates with the second cavity (111 b) through the second passage, and the fluid outlet (118) communicates with the fourth cavity (111 d) through the third passage.

7. The gas-liquid separator according to claim 6, wherein the body portion (111) is provided with a first projection (111 h), the first projection (111 h) being provided at an end of the body portion (111) connected to the outer circumferential wall (112);

the second channel and the third channel are arranged on the first bump (111 h).

8. The gas-liquid separator of claim 7, wherein at least a portion of the first bump (111 h) is located in the third cavity (111 c), the third cavity (111 c) comprises a first top wall and a second top wall, the body portion (111) forms the first top wall, and the first bump (111 h) located in the third cavity (111 c) forms the second top wall;

the first partition part (113) comprises a first end part and a second end part which are oppositely arranged, the first end part is connected with the body part (111), and the second end part is far away from the body part (111);

the second partition part (114) comprises a third end part and a fourth end part which are oppositely arranged, the third end part is connected with the body part (111), and the fourth end part is far away from the body part (111);

said open end (122) projecting into said third cavity (111 c) and opposite said first top wall;

the distance between the end face of the open end (122) and the first top wall is smaller than the distance between the first end and the second end, and the distance between the end face of the open end (122) and the first top wall is smaller than the distance between the third end and the fourth end.

9. The gas-liquid separator of any one of claims 2 to 5, wherein the housing (13) comprises a sidewall (132) and a bottom wall;

at least part of the duct (12) is located in the fifth cavity (131);

the top cover (11) is connected to an end of the side wall (132) remote from the bottom wall.

10. An air conditioning system, characterized in that the air conditioning system comprises:

a compressor (2);

a first indoor heat exchanger (3);

a second indoor heat exchanger (6);

an outdoor heat exchanger (5);

a gas-liquid separator (1),

the gas-liquid separator (1) comprises a top cover (11), the top cover (11) comprises a first fluid inlet (116), a second fluid inlet (117) and a fluid outlet (118), and the first fluid inlet (116) and the second fluid inlet (117) are arranged at intervals;

the first fluid inlet (116) is communicated with the first cavity (111 a), the second fluid inlet (117) is communicated with the second cavity (111 b), the top cover (11) further comprises a first separating part (113), and the first separating part (113) is positioned between the first cavity (111 a) and the second cavity (111 b) and separates the first cavity (111 a) from the second cavity (111 b);

the gas-liquid separator (1) further comprises a shell (13), the shell (13) comprises a fifth cavity (131), and the first cavity (111 a) and the second cavity (111 b) are communicated with the fifth cavity (131); wherein the fluid outlet (118) communicates with an inlet of the compressor (2), the first fluid inlet (116) is connected with the second indoor heat exchanger (3), and the second fluid inlet (117) is connected with the outdoor heat exchanger (5).