WO2024066212A1

WO2024066212A1 - Gas-liquid separation device and new energy vehicle air-conditioning system

Info

Publication number: WO2024066212A1
Application number: PCT/CN2023/080684
Authority: WO
Inventors: 余挺; 覃小军
Original assignee: 浙江银轮机械股份有限公司
Priority date: 2022-09-28
Filing date: 2023-03-10
Publication date: 2024-04-04
Also published as: CN115540411A

Abstract

A gas-liquid separation device (100) and a new energy vehicle air-conditioning system (1000). The gas-liquid separation device (100) is provided with a flow inlet (313), a flow dividing cavity (700), a first gas-liquid separation channel (110) and a second gas-liquid separation channel (120), wherein the flow dividing cavity (700) is provided with a bottom wall (710), a first side wall (720) and a second side wall (730); the first side wall (720) is in communication with the first gas-liquid separation channel (110); the second side wall (730) is in communication with the second gas-liquid separation channel (120); the flow intake direction of the flow inlet (313) is perpendicular to the bottom wall (710) of the flow dividing cavity (700); and a refrigerant can enter the flow dividing cavity (700) through the flow inlet (313), enter the first gas-liquid separation channel (110) along the first side wall (720), and enter the second gas-liquid separation channel (120) along the second side wall (730).

Description

Gas-liquid separation device and new energy vehicle air conditioning system

Related Applications

This application claims priority to the Chinese patent application filed on September 28, 2022, with application number 202211189937.9 and invention name “Gas-Liquid Separation Device”, the entire contents of which are incorporated by reference into this application.

Technical Field

The present application relates to the technical field of gas-liquid separation of refrigerant media, and in particular to a gas-liquid separation device and a new energy vehicle air-conditioning system.

Background technique

In the air conditioning system of new energy vehicles, the gas-liquid separation device is generally set between the evaporator and the compressor, that is, the refrigerant enters the gas-liquid separation device from the evaporator and then enters the compressor. An important function of the gas-liquid separation device is to separate the gas-liquid two-phase refrigerant flowing out of the evaporator, thereby minimizing the probability of liquid refrigerant being sucked into the compressor to prevent liquid refrigerant from causing liquid hammer on the compressor.

Therefore, the gas-liquid separation device needs to separate the liquid refrigerant from the gas-liquid two-phase refrigerant as much as possible. In order to achieve the above purpose, the gas-liquid separation device in the related technology usually designs a U-shaped tube to realize the gas-liquid separation of the refrigerant. However, the residence time of the gas-liquid mixed refrigerant in the U-shaped tube is relatively short, which leads to incomplete gas-liquid separation of the refrigerant, thereby reducing the effect of gas-liquid separation of the refrigerant.

Summary of the invention

According to various embodiments of the present application, a gas-liquid separation device and a new energy vehicle air conditioning system are provided. System.

The gas-liquid separation device provided in the present application is provided with an inlet, a diverter chamber, a first gas-liquid separation channel and a second gas-liquid separation channel. The diverter chamber is provided with a bottom wall, a first side wall and a second side wall. The first side wall and the second side wall are arranged at a conical angle to enclose a diverter chamber with a conical cross-section; an end of the first side wall away from the second side wall is connected to the first gas-liquid separation channel, and an end of the second side wall away from the first side wall is connected to the second gas-liquid separation channel. The flow direction of the inlet is perpendicular to the bottom wall of the diverter chamber. The refrigerant can enter the diverter chamber through the inlet, and the refrigerant in the diverter chamber can enter the first gas-liquid separation channel along the first side wall, and enter the second gas-liquid separation channel along the second side wall.

In one embodiment, the angle between the first side wall and the second side wall is greater than or equal to 45° and less than or equal to 135°.

In one of the embodiments, an arc-shaped transition section is provided between the first side wall and the second side wall, and a portion of the outer contour of the orthographic projection of the inlet on the bottom wall of the diversion cavity coincides with the arc-shaped transition section.

In one embodiment, the gas-liquid separation device includes an outer shell, a partition, an inlet pipe and an outlet pipe. The outer shell is provided with a accommodating chamber and an inlet port and an outlet port respectively connected to the accommodating chamber. The inlet pipe is inserted into the inlet port and connected to the inlet port. One end of the outlet pipe is inserted into the accommodating chamber, and the other end extends out of the accommodating chamber and is inserted into the outlet port. One end of the partition is directly or indirectly connected to the outer wall of the outlet pipe, and the other end extends toward a direction close to the side wall of the accommodating chamber to separate the accommodating chamber into a first chamber and a second chamber, and the partition is provided with a connecting port connecting the first chamber and the second chamber.

In one embodiment, the shell includes a cylinder and a sealing cover, the sealing cover is sealingly arranged at the opening of the cylinder, and the inlet and the outlet are arranged on the sealing cover.

In one of the embodiments, a liquid outlet gap connecting the first cavity and the second cavity is provided between the partition and the inner wall of the accommodating cavity.

In one embodiment, one of the first gas-liquid separation channel and the second gas-liquid separation channel Or one or more reflux structures are provided in both, and the reflux structure includes a first reflux plate and a second reflux plate distributed in sequence along a first direction, wherein the first direction is the extension direction of the first gas-liquid separation channel or the first direction is the extension direction of the second gas-liquid separation channel, the first reflux plate is provided with a first through-flow hole and a first reflux surface, the second reflux plate is provided with a second through-flow hole and a second reflux surface, the first through-flow hole and the second reflux surface are correspondingly distributed along the first direction, and the second through-flow hole and the first reflux surface are correspondingly distributed along the first direction, the second reflux surface can reflux the refrigerant entering through the first through-flow hole to the first reflux surface, and the first reflux surface can reflux the refrigerant refluxed from the second reflux surface to the second through-flow hole.

In one embodiment, the reflux structure also includes a third reflux plate, the first reflux plate, the second reflux plate and the third reflux plate are sequentially distributed along the first direction, the third reflux plate is provided with a third through-hole and a third reflux surface, the second reflux plate is provided with a back reflux surface at one end away from the second reflux surface, the third through-hole and the back reflux surface are correspondingly distributed along the first direction, and the third reflux surface and the second through-hole are correspondingly distributed along the first direction, the third reflux surface can return the refrigerant entering through the second through-hole to the back reflux surface, and the back reflux surface can return the refrigerant returning from the third reflux surface to the third through-hole.

In one of the embodiments, a first guide plate extending toward the second return surface is provided at an edge of the first flow hole.

In one of the embodiments, a second guide plate extending toward the third return surface is provided at an edge of the second flow hole.

In one of the embodiments, a third guide plate extending toward the reverse flow surface is provided at the edge of the third through-flow hole.

In one of the embodiments, a vertically arranged first liquid baffle is provided at the bottom of the first through-hole.

In one embodiment, a second liquid baffle plate is vertically arranged at the bottom of the second through-flow hole.

In one of the embodiments, a third liquid baffle plate is vertically arranged at the bottom of the third through-flow hole.

The present application also provides a new energy vehicle air conditioning system, including an evaporator, a compressor and the above The gas-liquid separation device is arranged between the evaporator and the compressor, and the refrigerant enters the gas-liquid separation device from the evaporator and then enters the compressor.

The details of one or more embodiments of the present application are set forth in the following drawings and description. Other features, objects, and advantages of the present application will become apparent from the description, drawings, and claims.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to better describe and illustrate the embodiments and/or examples of the inventions disclosed herein, reference may be made to one or more drawings. The additional details or examples used to describe the drawings should not be considered as limiting the scope of the disclosed inventions, the embodiments and/or examples currently described, and any of the best modes of these inventions currently understood.

FIG1 is a schematic diagram of the structure of a gas-liquid separation device according to one or more embodiments provided in the present application.

FIG2 is a cross-sectional view of a gas-liquid separation device according to one or more embodiments provided in the present application.

FIG. 3 is an exploded view of a gas-liquid separation device according to one or more embodiments provided in the present application.

FIG. 4 is a schematic diagram of a partial structure of a gas-liquid separation device according to one or more embodiments provided in the present application.

FIG5 is a schematic diagram of the structure of a new energy vehicle air-conditioning system according to one or more embodiments provided in the present application.

Figure numerals: 100, gas-liquid separation device; 110, first gas-liquid separation channel; 120, second gas-liquid separation channel; 200, reflux structure; 210, first reflux plate; 211, first through-flow hole; 212, first reflux surface; 220, second reflux plate; 221, second through-flow hole; 222, second reflux surface; 223, back reflux surface; 230, third reflux plate; 231, third through-flow hole; 232, third reflux surface; 240, first guide plate; 250, second guide plate; 260, first liquid baffle plate; 270, second liquid baffle plate; 280, third liquid baffle plate; 290, third guide plate; 300, housing; 310, accommodating cavity; 311, first cavity; 312, second cavity; 313, inlet; 314, liquid outlet gap; 315, air outlet; 320, cylinder; 330, sealing cover; 400, partition; 500, connecting port; 600, air outlet pipe; 700, diversion cavity; 710, bottom wall; 720, first side wall; 730, second side wall; 740, arc-shaped transition section; 800, inlet pipe; 901, evaporator; 902, compressor; 1000, new energy vehicle air-conditioning system.

Detailed ways

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In this application, unless otherwise expressly specified or limited, a first feature is "on" or "on" a second feature. “Under” means that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature “above”, “above” and “above” the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature “under”, “below” and “below” the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and/or" used in this application includes any and all combinations of one or more related listed items.

As shown in FIG5 , in the new energy vehicle air conditioning system 1000, the gas-liquid separation device 100 is generally arranged between the evaporator 901 and the compressor 902, that is, the refrigerant enters the gas-liquid separation device from the evaporator 901 and then enters the compressor 902. An important function of the gas-liquid separation device is to separate the gas-liquid two-phase refrigerant flowing out of the evaporator 901 into gas and liquid, thereby minimizing the probability of the liquid refrigerant being sucked into the compressor 902, so as to prevent the liquid refrigerant from causing liquid hammer to the compressor 902.

Please refer to Figures 1 to 4. In order to solve the problem that the existing gas-liquid mixed refrigerant has a short residence time in the U-shaped tube, resulting in incomplete separation of the refrigerant gas and liquid, the present application provides a gas-liquid separation device 100. The gas-liquid separation device 100 is provided with an inlet 313, a diverter cavity 700, a first gas-liquid separation channel 110 and a second gas-liquid separation channel 120. The diverter cavity 700 is provided with a bottom wall 710, a first side wall 720 and a second side wall 730. The first side wall 720 and the second side wall 730 are arranged at a conical angle to enclose the diverter cavity 700 with a conical cross section. One end of the first side wall 720 away from the second side wall 730 is connected to the first gas-liquid separation channel 110, and one end of the second side wall 730 away from the first side wall 720 is connected to the second gas-liquid separation channel 120. The flow direction of the inlet port 313 is perpendicular to the bottom wall 710 of the diversion chamber 700. The refrigerant can enter the diversion chamber 700 through the inlet port 313, and the refrigerant in the diversion chamber 700 can enter the first gas-liquid separation channel 110 along the first side wall 720, and enter the second gas-liquid separation channel 120 along the second side wall 730.

It should be noted that the conical angle setting refers to that the first side wall 720 and the second side wall 730 are arranged to form a conical angle, and the angle is greater than 0° and less than 180°.

Furthermore, it should be noted that the inflow direction refers to the flow direction of the gas-liquid two-phase refrigerant.

By setting the flow diversion chamber 700, since the flow direction of the inlet 313 is perpendicular to the bottom wall 710 of the flow diversion chamber 700, the gas-liquid two-phase refrigerant vertically impacts the bottom wall 710 of the flow diversion chamber 700 from the inlet 313, and then the refrigerant diffuses to the surrounding of the flow diversion chamber 700. In addition, since the first side wall 720 and the second side wall 730 are arranged at a conical angle to enclose the flow diversion chamber 700 with a conical cross section, the refrigerant will fully contact the bottom wall 710, the first side wall 720 and the second side wall 730 of the flow diversion chamber 700 during the diffusion process in the flow diversion chamber 700, so that the liquid refrigerant condenses on the bottom wall 710, the first side wall 720 and the second side wall 730 of the flow diversion chamber 700. Since the end of the first side wall 720 away from the second side wall 730 is connected to the first gas-liquid separation channel 110, and the end of the second side wall 730 away from the first side wall 720 is connected to the second gas-liquid separation channel 120, when the gas-liquid two-phase refrigerant fills the entire diversion cavity 700, the gas-liquid two-phase refrigerant can enter the first gas-liquid separation channel along the first side wall 720 under the promotion of the gas pressure difference. 110, and enter the second gas-liquid separation channel 120 along the second side wall 730, so that the condensation effect of the liquid refrigerant on the first side wall 720 and the second side wall 730 is further enhanced, thereby improving the gas-liquid separation effect of the refrigerant. In addition, the first side wall 720 and the second side wall 730 have a certain flow-guiding effect on the refrigerant, avoiding turbulence of the refrigerant in the diversion cavity 700, so that the separation efficiency of the gas-liquid separation device 100 is improved.

Further, in one embodiment, the angle between the first side wall 720 and the second side wall 730 is greater than or equal to 45° and less than or equal to 135°.

In this way, the angle between the first side wall 720 and the second side wall 730 is greater than or equal to 45°, which is conducive to expanding the volume of the diversion chamber 700 so that the diversion chamber 700 can accommodate more gas-liquid two-phase refrigerant. The angle between the first side wall 720 and the second side wall 730 is less than or equal to 135°, which can avoid the angle between the first side wall 720 and the second side wall 730 being too large and affecting the refrigerant entering the first gas-liquid separation channel 110 and the second gas-liquid separation channel 120.

Optionally, the included angle between the first side wall 720 and the second side wall 730 is 90°.

In one embodiment, as shown in FIG. 4 , an arcuate transition section 740 is provided between the first side wall 720 and the second side wall 730 , and a portion of the outer contour of the inlet 313 projected onto the bottom wall 710 of the diversion cavity 700 coincides with the arcuate transition section 740 .

In this way, the refrigerant can smoothly enter the first side wall 720 and the second side wall 730 along the arc transition section 740, avoiding turbulence of the gas-liquid two-phase refrigerant in the diversion chamber 700, thereby improving the diversion efficiency of the gas-liquid separation device 100.

In one embodiment, as shown in FIGS. 3 and 4 , one or both of the first gas-liquid separation channel 110 and the second gas-liquid separation channel 120 are provided with one or more reflux structures 200, and the reflux structure 200 includes a first reflux plate 210 and a second reflux plate 220 sequentially distributed along a first direction, wherein the first direction is an extension direction of the first gas-liquid separation channel 110 or a direction of the second gas-liquid separation channel 120. The first return plate 210 is provided with a first through-hole 211 and a first return surface 212, and the second return plate 220 is provided with a second through-hole 221 and a second return surface 222. The first through-hole 211 and the second return surface 222 are correspondingly distributed along the first direction, and the second through-hole 221 and the first return surface 212 are correspondingly distributed along the first direction, and the second return surface 222 can return the refrigerant entering through the first through-hole 211 to the first return surface 212, and the first return surface 212 can return the refrigerant returned by the second return surface 222 to the second through-hole 221.

It should be noted that the first direction is not a fixed direction. When the reflux structure 200 is located in the first gas-liquid separation channel 110, the first direction is the extension direction of the first gas-liquid separation channel 110. When the reflux structure 200 is located in the second gas-liquid separation channel 120, the first direction is the extension direction of the second gas-liquid separation channel 120. Furthermore, the first direction may be a direction along a straight line, a direction along a curve, or a specific direction extending along an arbitrary shape, which is not limited here.

Further, it should be noted that, in the present embodiment, the first side wall 720 and the second side wall 730 are side walls of different first reflow plates 210 .

Since one or more reflux structures 200 are disposed in the first gas-liquid separation channel 110 and the second gas-liquid separation channel 120 , the refrigerant will pass through one or more reflux structures 200 when flowing in the first gas-liquid separation channel 110 and the second gas-liquid separation channel 120 .

Further, the reflux structure 200 includes a first reflux plate 210 and a second reflux plate 220 sequentially distributed along the first direction, the first reflux plate 210 is provided with a first through-hole 211 and a first reflux surface 212, and correspondingly, the second reflux plate 220 is provided with a second through-hole 221 and a second reflux surface 222. It should be noted that the first through-hole 211 and the second reflux surface 222 are correspondingly distributed along the first direction, and the second through-hole 221 and the first reflux surface 212 are correspondingly distributed along the first direction, and the second reflux surface 222 can reflux the refrigerant entering through the first through-hole 211 to the second reflux surface 222, and the second reflux surface 222 can The refrigerant returning from the first return surface 212 is returned to the second flow hole 221 .

In this way, when the refrigerant passes through the second return surface 222 of the second return plate 220 from the first flow hole 211 of the first return plate 210 along the first direction, the second return surface 222 returns the refrigerant to the first return surface 212 of the first return plate 210, and then the first return surface 212 returns the refrigerant to the second flow hole 221 of the second return plate 220, and finally, the refrigerant leaves the return structure 200 from the second flow hole 221. Through the multiple reflux effects of the first reflux plate 210 and the second reflux plate 220, the contact area and contact time of the gas-liquid two-phase refrigerant with the first reflux plate 210 and the second reflux plate 220 are significantly increased, that is, the residence time of the refrigerant in the first gas-liquid separation channel 110 and the second gas-liquid separation channel 120 is significantly increased, and the contact area between the refrigerant and the gas-liquid separation device 100 is significantly increased, which is conducive to the adsorption of liquid refrigerant on the inner walls of the first reflux plate 210, the second reflux plate 220 and the first gas-liquid separation channel 110 and the second gas-liquid separation channel 120, thereby significantly improving the gas-liquid separation effect of the gas-liquid separation device 100.

Moreover, compared with the U-shaped tube design in the gas-liquid separation device in the related art, in order to achieve a better gas-liquid separation effect, a longer U-shaped tube needs to be designed. In the present application, one or more reflux structures 200 are arranged in the first gas-liquid separation channel 110 and the second gas-liquid separation channel 120 to achieve a better gas-liquid separation effect, without the need to lengthen the traditional gas-liquid separation channel to achieve a better gas-liquid separation effect. Therefore, the gas-liquid separation device 100 provided in the present application is smaller in size, and it is easier to install the gas-liquid separation device 100.

Further, in one embodiment, as shown in FIG. 4, the reflux structure 200 further includes a third reflux plate 230, the first reflux plate 210, the second reflux plate 220 and the third reflux plate 230 are sequentially distributed along the first direction, the third reflux plate 230 is provided with a third through-flow hole 231 and a third reflux surface 232, the second reflux plate 220 is provided with a back reflux surface 223 at one end away from the second reflux surface 222, the third through-flow hole 231 and the back reflux surface 223 are correspondingly distributed along the first direction, and the third reflux surface 232 and the second through-flow hole 221 are arranged along the first direction. Corresponding to the distribution in the first direction, the third return surface 232 can return the refrigerant entering through the second through-flow hole 221 to the back return surface 223 , and the back return surface 223 can return the refrigerant returning from the third return surface 232 to the third through-flow hole 231 .

In this way, when the refrigerant passes through the third return surface 232 of the third return plate 230 from the second flow hole 221 of the second return plate 220 along the first direction, the third return surface 232 can return the refrigerant to the back return surface 223 of the second return plate 220, and then the back return surface 223 returns the refrigerant to the third flow hole 231 of the third return plate 230, and finally, the refrigerant leaves the return structure 200 from the third flow hole 231. Through the multiple reflux effects of the first reflux plate 210, the second reflux plate 220 and the third reflux plate 230, the contact area and contact time of the gas-liquid two-phase refrigerant with the first reflux plate 210, the second reflux plate 220 and the third reflux plate 230 are significantly increased, that is, the residence time of the refrigerant in the first gas-liquid separation channel 110 and the second gas-liquid separation channel 120 is significantly increased, and the contact area between the refrigerant and the gas-liquid separation device 100 is significantly increased, which is conducive to the adsorption of liquid refrigerant on the inner walls of the first reflux plate 210, the second reflux plate 220, the third reflux plate 230 and the first gas-liquid separation channel 110 and the second gas-liquid separation channel 120, thereby significantly improving the gas-liquid separation effect of the gas-liquid separation device 100.

In one embodiment, as shown in FIG. 4 , a first guide plate 240 extending toward the second return surface 222 is disposed at an edge of the first through hole 211 .

In this way, the refrigerant is facilitated to flow toward the second return surface 222 through the first guide plate 240 .

Likewise, in one embodiment, as shown in FIG. 4 , a second guide plate 250 extending toward the third return surface 232 is disposed at an edge of the second through-hole 221 .

In this way, the refrigerant is facilitated to flow to the third return surface 232 through the second guide plate 250 .

Furthermore, in one embodiment, as shown in FIG. 4 , one end of the second guide plate 250 away from the third return plate 230 extends toward a direction close to the first return surface 212 .

In this way, the refrigerant is facilitated to enter the second flow path from the first return surface 212 through the second guide plate 250. The hole 221 further enhances the flow guiding effect of the second guide plate 250.

Likewise, in one embodiment, as shown in FIG. 4 , a third guide plate 290 extending toward the back-flow surface 223 is disposed at the edge of the third through-hole 231 .

This is conducive to the refrigerant flowing toward the back-flow surface 223 through the third guide plate 290 .

In one embodiment, as shown in FIG. 4 , a vertically disposed first liquid baffle plate 260 is disposed at the bottom of the first flow hole 211 .

Usually, in the gas-liquid two-phase refrigerant, the liquid refrigerant is usually concentrated at the bottom of the refrigerant due to its higher density. Therefore, by providing a vertically arranged first liquid baffle plate 260 at the bottom of the first flow hole 211, it is beneficial to increase the contact time between the liquid refrigerant and the first liquid baffle plate 260, thereby helping to improve the separation effect of the liquid refrigerant.

In one embodiment, as shown in FIG. 4 , a second liquid baffle plate 270 is vertically disposed at the bottom of the second through-hole 221 .

By providing a vertically arranged second liquid baffle plate 270 at the bottom of the second flow hole 221 , it is helpful to increase the contact time between the liquid refrigerant and the second liquid baffle plate 270 , thereby helping to improve the separation effect of the liquid refrigerant.

Likewise, in one embodiment, as shown in FIG. 4 , a third liquid baffle plate 280 is vertically disposed at the bottom of the third through-hole 231 .

By providing a vertically arranged third liquid baffle plate 280 at the bottom of the third flow hole 231 , it is helpful to increase the contact time between the liquid refrigerant and the third liquid baffle plate 280 , thereby helping to improve the separation effect of the liquid refrigerant.

In one embodiment, as shown in FIG. 2 and FIG. 3, the gas-liquid separation device 100 includes a housing 300, a partition 400, an inlet pipe 800, and an outlet pipe 600. The housing 300 is provided with a receiving chamber 310 and an inlet port 313 and an outlet port 315 respectively connected to the receiving chamber 310. The inlet pipe 800 is inserted into the inlet port 313 and connected to the outlet port 315. Inlet 313, one end of the air outlet pipe 600 is inserted into the accommodating chamber 310, and the other end extends out of the accommodating chamber 310 and is inserted into the air outlet 315, one end of the partition 400 is directly or indirectly connected to the outer wall of the air outlet pipe 600, and the other end extends toward the direction close to the side wall of the accommodating chamber 310 to separate the accommodating chamber 310 into a first chamber 311 and a second chamber 312, and the partition 400 is provided with a connecting port 500 connecting the first chamber 311 and the second chamber 312.

It should be noted that the reflux structure 200 is disposed in the first cavity 311 .

In this way, the gas-liquid two-phase refrigerant enters the first gas-liquid separation channel 110 and the second gas-liquid separation channel 120 from the inlet pipe 800 through the inlet port 313. After that, the refrigerant undergoes gas-liquid separation under the action of the reflux structure 200. Then, the refrigerant enters the second cavity 312 through the connecting port 500, and the liquid refrigerant is deposited at the bottom of the second cavity 312. The gaseous refrigerant leaves the second cavity 312 through the outlet pipe 600, thereby realizing the gas-liquid separation of the gas-liquid two-phase refrigerant.

Further, as shown in FIG. 3 , the housing 300 includes a cylinder 320 and a sealing cover 330 , the sealing cover 330 is sealingly disposed at the opening of the cylinder 320 , the inlet 313 and the outlet 315 are disposed at the sealing cover 330 , and the reflux structure 200 and the partition 400 are both disposed in the cylinder 320 .

The inlet 313 and the outlet 315 are arranged on the sealing cover 330 , which greatly reduces the difficulty of connecting the inlet pipe 800 and the housing 300 , and reduces the difficulty of connecting the outlet pipe 600 and the housing 300 .

In one embodiment, as shown in FIG. 2 , a liquid outlet gap 314 communicating with the first cavity 311 and the second cavity 312 is provided between the partition plate 400 and the inner wall of the accommodating cavity 310 .

In this way, the liquid refrigerant can enter the second chamber 312 from the first chamber 311 through the liquid outlet gap 314 .

Furthermore, in one embodiment, the end surface of one side of the partition 400 close to the first cavity 311 is inclined from an end away from the liquid outlet gap 314 to an end close to the liquid outlet gap 314 toward a direction away from the first cavity 311 .

This is conducive to the liquid refrigerant gathering on the side end surface of the partition 400 close to the first chamber 311. The liquid flows into the liquid outlet gap 314 , and enters the second chamber 312 from the first chamber 311 through the liquid outlet gap 314 .

The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

A gas-liquid separation device, characterized in that it is provided with an inlet, a diverter chamber, a first gas-liquid separation channel and a second gas-liquid separation channel, the diverter chamber is provided with a bottom wall, a first side wall and a second side wall, the first side wall and the second side wall are arranged at a conical angle to enclose the diverter chamber with a conical cross-section; the end of the first side wall away from the second side wall is connected to the first gas-liquid separation channel, and the end of the second side wall away from the first side wall is connected to the second gas-liquid separation channel, the inlet direction of the inlet is perpendicular to the bottom wall of the diverter chamber, the refrigerant can enter the diverter chamber through the inlet, and the refrigerant in the diverter chamber can enter the first gas-liquid separation channel along the first side wall, and enter the second gas-liquid separation channel along the second side wall.
The gas-liquid separation device according to claim 1, wherein the angle between the first side wall and the second side wall is greater than or equal to 45° and less than or equal to 135°.
The gas-liquid separation device according to claim 1, wherein an arc-shaped transition section is provided between the first side wall and the second side wall, and a portion of the outer contour of the positive projection of the inlet on the bottom wall of the diversion chamber coincides with the arc-shaped transition section.
The gas-liquid separation device according to claim 1, wherein the gas-liquid separation device comprises a shell, a partition, an inlet pipe and an outlet pipe, the shell is provided with a accommodating chamber and the inlet and outlet respectively connected to the accommodating chamber, the inlet pipe is inserted into the inlet and connected to the inlet, one end of the outlet pipe is inserted into the accommodating chamber, and the other end extends out of the accommodating chamber and is inserted into the outlet, one end of the partition is directly or indirectly connected to the outer wall of the outlet pipe, and the other end extends toward the direction close to the side wall of the accommodating chamber to separate the accommodating chamber into a first chamber and a second chamber, and the partition is provided with a connecting port connecting the first chamber and the second chamber.
The gas-liquid separation device according to claim 4, wherein the housing comprises a cylinder and a sealing cover, the sealing cover is sealed at the opening of the cylinder, the inlet and the outlet The sealing cover is provided.
The gas-liquid separation device according to claim 4, wherein a liquid outlet gap connecting the first cavity and the second cavity is provided between the partition plate and the inner wall of the accommodating cavity.
The gas-liquid separation device according to claim 1, wherein one or both of the first gas-liquid separation channel and the second gas-liquid separation channel are provided with one or more reflux structures, and the reflux structure includes a first reflux plate and a second reflux plate sequentially distributed along a first direction, wherein the first direction is the extension direction of the first gas-liquid separation channel or the first direction is the extension direction of the second gas-liquid separation channel, the first reflux plate is provided with a first through-flow hole and a first reflux surface, the second reflux plate is provided with a second through-flow hole and a second reflux surface, the first through-flow hole and the second reflux surface are correspondingly distributed along the first direction, and the second through-flow hole and the first reflux surface are correspondingly distributed along the first direction, the second reflux surface can reflux the refrigerant entering through the first through-flow hole to the first reflux surface, and the first reflux surface can reflux the refrigerant refluxed from the second reflux surface to the second through-flow hole.
According to the gas-liquid separation device according to claim 7, wherein the reflux structure also includes a third reflux plate, the first reflux plate, the second reflux plate and the third reflux plate are distributed in sequence along the first direction, the third reflux plate is provided with a third through-flow hole and a third reflux surface, the second reflux plate is provided with a back reflux surface at one end away from the second reflux surface, the third through-flow hole and the back reflux surface are correspondingly distributed along the first direction, and the third reflux surface and the second through-flow hole are correspondingly distributed along the first direction, the third reflux surface can reflux the refrigerant entering through the second through-flow hole to the back reflux surface, and the back reflux surface can reflux the refrigerant refluxed from the third reflux surface to the third through-flow hole.
The gas-liquid separation device according to claim 8, wherein the edge of the first flow hole is provided with a first guide plate extending toward the second return surface;

And/or, a second guide plate extending toward the third return surface is provided at the edge of the second flow hole;

And/or, a third guide plate extending toward the back-flow surface is provided at the edge of the third through-flow hole.
The gas-liquid separation device according to claim 8, wherein a first liquid baffle plate is vertically arranged at the bottom of the first flow hole;

And/or, a second liquid baffle plate is vertically arranged at the bottom of the second flow hole;

And/or, a third liquid baffle plate is vertically arranged at the bottom of the third flow hole.
A new energy automobile air conditioning system, characterized in that it comprises an evaporator, a compressor and a gas-liquid separation device as described in any one of claims 1 to 10, wherein the gas-liquid separation device is arranged between the evaporator and the compressor, and the refrigerant enters the gas-liquid separation device from the evaporator and then enters the compressor.