Gas-liquid separator and refrigeration apparatus

Abstract

The application belongs to the technical field of refrigeration, and particularly relates to a gas-liquid separator and a refrigeration equipment. The gas-liquid separator comprises a container, the container comprises a main body, a first end cover and a second end cover, the two ends of the main body are provided with openings, the first end cover and the second end cover are respectively connected to the two end openings of the main body, the first end cover is provided with a first output port, and the second end cover is provided with a second output port. An input pipe is provided, one end of the input pipe penetrates into the interior of the container from the second end cover. A filter structure is clamped and fixed between the end face of the main body and the first end cover. The technical scheme of the application aims to solve the problem that in the prior art, the installation of functional components such as filter screens in the gas-liquid separator requires forming structures for positioning, clamping or fixing the filter screens on the inner wall of the container, thereby causing the structure of the container to be complex and the manufacturing process to be complex.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of refrigeration, and particularly relates to a gas-liquid separator and a refrigeration equipment. BACKGROUND

[0002] The refrigeration equipment generally comprises a compressor, a condenser, an evaporator and a throttling valve. The compressor sucks in low-pressure working medium steam from the evaporator, and sends the working medium steam to the condenser after the pressure of the working medium steam is increased. The working medium steam is condensed into high-pressure liquid in the condenser. After throttling of the throttling valve, the high-pressure liquid becomes low-pressure liquid, and is sent to the evaporator. The low-pressure liquid is evaporated in the evaporator to become low-pressure steam, and is sent to the inlet of the compressor, so as to complete the refrigeration cycle.

[0003] The low-temperature and low-pressure gas-liquid mixture after the throttling valve needs to be separated by the gas-liquid separator. The separated gas enters the compressor, and the separated liquid enters the evaporator, so that the gas content entering the evaporator can be reduced, and the heat exchange efficiency of the evaporator can be improved. In addition, the pressure of the gas separated by the gas-liquid separator is higher than the main suction gas pressure of the compressor, so that the compression ratio of the compressor is reduced, and the refrigerant suction amount of the compressor is increased.

[0004] In the gas-liquid separator of the prior art, the gas-liquid mixture is filtered and separated by the filter screen and other functional components. The liquid is discharged downward through the liquid outlet interface under the action of gravity, and the gas is discharged upward through the gas outlet interface. Therefore, the installation of the filter screen and other functional components is very important. In the gas-liquid separator of the prior art, the filter screen and other functional components need to be positioned, clamped or fixed on the inner wall of the container, so that the structure of the container is complex, and the manufacturing process is complex. SUMMARY

[0005] The purpose of the embodiments of the application is to provide a gas-liquid separator and a refrigeration equipment, and to solve the problem that the filter screen and other functional components need to be positioned, clamped or fixed on the inner wall of the container in the gas-liquid separator of the prior art, so that the structure of the container is complex, and the manufacturing process is complex.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the embodiments of the application is as follows: a gas-liquid separator comprises:

[0007] A container comprises a main body, a first end cover and a second end cover. The main body has openings at both ends. The first end cover and the second end cover are respectively connected to the openings at both ends of the main body. The first end cover is provided with a first output port, and the second end cover is provided with a second output port.

[0008] An input pipe is arranged in the container through the second end cover.

[0009] A filter structure is clamped and fixed between the end face of one end of the main body and the first end cover.

[0010] In an embodiment, the filter structure comprises a mounting member and a filter screen, the filter screen is mounted on the mounting member and located on the side of the mounting member facing the first end cover, the circumferential edge of the mounting member is clamped and fixed between the end face of the main body and the first end cover, and the mounting member is provided with filter flow guide holes for the flow of the gas-liquid mixture.

[0011] In an embodiment, the circumferential edge of the filter screen is provided with a filter screen pressing edge, and the filter screen pressing edge is clamped and fixed between the circumferential edge of the mounting member and the first end cover.

[0012] In an embodiment, the mounting member is further provided with a flow guide groove and a crown-shaped protrusion protruding towards the filter screen, a plurality of filter flow guide holes are arranged around the crown-shaped protrusion, the flow guide groove and the plurality of filter flow guide holes are one-to-one corresponding, and the two ends of the flow guide groove are connected to the side surface of the mounting member facing the filter screen and the filter flow guide holes, respectively, so as to guide the liquid on the side surface of the mounting member facing the filter screen into the filter flow guide holes.

[0013] In an embodiment, the gas-liquid separator further comprises a separation member, the separation member is mounted in the interior of the container, the input pipe passes through the separation member, and the output port of the input pipe is located between the separation member and the filter structure, the separation member is provided with separation flow guide holes for the flow of the gas-liquid mixture.

[0014] In an embodiment, the separation member comprises a separation plate and a separation side plate formed on the circumferential edge of the separation plate, an annular groove is formed on the separation side plate, a separation welding ring is arranged in the annular groove, the separation member is welded to the inner wall of the main body through the separation welding ring, and the separation plate is provided with separation flow guide holes.

[0015] In an embodiment, the distance between the separation plate and the end face of the main body facing the second end cover is 10-20 mm.

[0016] In an embodiment, the part of the input pipe between the separation member and the filter structure is arranged as a straight pipe extending in the direction from the second end cover to the first end cover, and the output port of the input pipe faces the filter structure.

[0017] In an embodiment, the distance between the output port of the input pipe and the side of the filter structure facing the second end cover is 5-10 mm.

[0018] In an embodiment, the pipe axis of the part of the input pipe between the separation member and the filter structure coincides with the central axis of the main body.

[0019] In an embodiment, the part of the input pipe between the isolating member and the filtering structure is arranged as a straight pipe extending in a direction from the second end cover to the first end cover, the end of the input pipe towards the filtering structure is a closed end, and the side wall of the part of the input pipe between the isolating member and the filtering structure is provided with a side outlet.

[0020] In an embodiment, the part of the input pipe between the isolating member and the filtering structure is arranged as a spiral pipe extending in a direction from the second end cover to the first end cover or is arranged as a curved pipe in a plane perpendicular to the central axis of the main body.

[0021] According to another aspect of the embodiments of the present application, a refrigeration device is provided. Specifically, the refrigeration device comprises the gas-liquid separator as described above.

[0022] The embodiments of the present application have at least the following beneficial effects:

[0023] Compared with the prior art, in the gas-liquid separator of the present application, the filtering structure is fixed by being clamped between the end face of one end of the main body of the container and the first end cover, which is different from the prior art. That is, the filtering structure can be installed without forming a structure for positioning, fixing or clamping a functional member on the inner wall of the container. Moreover, one end of the input pipe penetrates into the interior of the container from the second end cover, which is arranged in a vertical direction and does not need to consider the occupation of the horizontal space. Therefore, the structure of the container is simplified, the manufacturing process of the container is simplified, and the manufacturing cost of the container is reduced.

[0024] The refrigeration device provided by the present application has the following advantages compared with the prior art. On the one hand, the proportion of gas entering the evaporator is reduced, and the heat exchange efficiency of the evaporator is improved. On the other hand, for the compressor, the pressure of the secondary suction gas separated by the gas-liquid separator is higher than that of the primary suction gas, thereby reducing the pressure ratio of the compressor and increasing the suction amount of the compressor. In summary, the refrigeration device of the present application has higher energy efficiency than the prior art, and the separation effect of the gas-liquid separator has a great influence on the refrigeration efficiency of the refrigeration device. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative labor.

[0026] Figure 1 is a schematic diagram of the principle of the refrigeration device of the present application;

[0027] Figure 2is a sectional view of a gas-liquid separator provided by Embodiment One of the present application;

[0028] Figure 3 is an exploded view of the gas-liquid separator provided by Embodiment One of the present application;

[0029] Figure 4 is a structural view of a partition provided by the gas-liquid separator provided by Embodiment One of the present application;

[0030] Figure 5 is a structural view of a mounting provided by the gas-liquid separator provided by Embodiment One of the present application;

[0031] Figure 6 is a sectional view of a gas-liquid separator provided by Embodiment Two of the present application;

[0032] Figure 7 is an exploded view of the gas-liquid separator provided by Embodiment Two of the present application;

[0033] Figure 8 is a sectional view of a gas-liquid separator provided by Embodiment Three of the present application;

[0034] Figure 9 is an exploded view of the gas-liquid separator provided by Embodiment Three of the present application.

[0035] In the drawings, reference numerals:

[0036] 1, gas-liquid separator; 11, container; 111, main body; 112, first end cover; 1121, first output port; 1122, cover body; 1123, surrounding edge; 113, second end cover; 1131, second output port; 12, input pipe; 121, side output port; 13, partition; 131, partition plate; 1311, partition flow guide hole; 132, partition side plate; 1321, annular groove; 14, mounting; 1411, filter flow guide hole; 1412, crown-shaped protrusion; 1413, flow guide groove; 15, filter screen; 151, filter screen pressing edge; 2, evaporator; 3, compressor; 4, condenser; 5, primary capillary tube; 6, secondary capillary tube; 7, main suction pipe; 8, secondary suction pipe. DETAILED DESCRIPTION

[0037] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the embodiments of the present application, and cannot be understood as limiting the embodiments of the present application.

[0038] In the description of the embodiments of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0039] In addition, the terms "first", "second", and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0040] In the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0041] On the one hand, referring to Figure 1 As shown in the drawings, the present application provides a refrigeration equipment, which comprises an evaporator 2, a compressor 3, a condenser 4, a primary capillary 5, a secondary capillary 6 and a gas-liquid separator 1. The evaporator 2 is connected with the compressor 3 through a main suction pipe 7, and a first output port 1121 of the gas-liquid separator 1 is connected with the compressor 3 through a secondary suction pipe 8. The high-temperature and high-pressure gas discharged from the compressor 3 is condensed into low-temperature and high-pressure refrigerant liquid after passing through the condenser 4, and becomes low-temperature and low-pressure refrigerant gas-liquid mixture after passing through the primary capillary 5. The refrigerant gas-liquid mixture enters the gas-liquid separator 1, and separates into secondary suction gas and liquid. The secondary suction gas enters the compressor 3 through the secondary suction pipe 8. The liquid passes through the secondary capillary 6, and the pressure and temperature continue to decrease. The liquid enters the evaporator 2 to absorb heat, and the temperature rises to become refrigerant gas, which is then sucked into the compressor 3 as main suction gas through the main suction pipe 7.

[0042] The refrigeration equipment provided by the application, due to the design of the gas-liquid separator 1, compared with the existing refrigeration equipment, on the one hand, the proportion of gas entering the evaporator 2 is reduced, and the heat exchange efficiency of the evaporator 2 is improved; on the other hand, for the compressor 3, the pressure of the two suction gases separated by the gas-liquid separator 1 is higher than that of the main suction gas, thereby reducing the pressure ratio of the compressor 3 and increasing the refrigerant suction amount of the compressor 3. In summary, the refrigeration equipment of the application has higher energy efficiency than the existing refrigeration equipment, and the separation effect of the gas-liquid separator 1 has a great influence on the refrigeration efficiency of the refrigeration equipment.

[0043] On the other hand, the application provides a gas-liquid separator 1 applied to the above-mentioned refrigeration equipment, and the specific embodiments of the gas-liquid separator 1 are explained below.

[0044] Embodiment one:

[0045] Please refer to Figure 2 and Figure 3 The gas-liquid separator 1 provided by the application can be applied to the above-mentioned refrigeration equipment to separate the low-temperature and low-pressure gas-liquid mixture passing through the primary capillary tube 5. It can be understood that in other embodiments of the application, the gas-liquid separator 1 can also be applied to other mechanical equipment and mechanical systems, such as gas-liquid separation at the outlet of a boiler, gas-liquid separation in a steam generator, which is not limited herein.

[0046] The gas-liquid separator 1 includes a container 11, an input pipe 12 and a filter structure. The container 11 includes a main body 111, a first end cover 112 and a second end cover 113, a first output port 1121 is formed on the first end cover 112, the first output port 1121 is used for outputting gas, a second output port 1131 is formed on the second end cover 113, the second output port 1131 is used for outputting liquid, therefore, during the use of the gas-liquid separator 1, the first end cover 112 needs to be located above the second end cover 113, at this time, the gas-liquid separator 1 can be slightly inclined, and of course the first end cover 112 and the second end cover 113 are vertically placed (i.e. the connecting line between the first end cover 112 and the second end cover 113 is vertical). The first end cover 112 is welded with one end of the main body 111, and the second end cover 113 is welded with the other end of the main body 111. The second end cover 113 is formed with a mounting hole, the input pipe 12 penetrates into the inside of the container 11 through the mounting hole, the input pipe 12 is used for conveying the gas-liquid mixture into the container 11, and the outer wall of the input pipe 12 and the mounting hole are fixedly connected and sealed by welding.

[0047] It can be understood that, in order to achieve better separation effect of the gas-liquid separator 1, the filter structure is arranged in the container 11. The main body 111, the first end cover 112 and the second end cover 113 are arranged in sections (three-section combined container 11) to facilitate the installation and welding operation of the filter structure. After the gas-liquid mixture is input into the input pipe 12, the filter structure can disperse the gas-liquid mixture through the filtering and flow guiding effect, and then the gas is output from the first output port 1121 and the liquid is output from the second output port 1131 under the action of gravity, so as to realize the gas-liquid separation.

[0048] In the gas-liquid separator of the present application, the installation of the filter structure is completed by clamping and fixing the filter structure between the one end face of the main body 111 of the container 11 and the first end cover 112, compared with the prior art, that is, the installation of the filter structure can be realized without forming a structure for positioning, fixing or clamping a functional part on the inner wall of the container 11, simplifying the structure of the container 11, simplifying the manufacturing process of the container 11 and reducing the manufacturing cost of the container 11.

[0049] In the first embodiment, please refer to Figure 2 and Figure 3 The filter structure includes a mounting part 14 and a filter screen 15, the circumferential edge of the mounting part 14 is clamped and fixed between the one end face of the main body 111 and the first end cover 112, the filter screen 15 is mounted and fixed on the mounting part 14, and the filter screen 15 is located between the mounting part 14 and the first end cover 112.

[0050] The first embodiment can be that the circumferential edge of the filter screen 15 is welded and fixed on the mounting part 14. In this way, the filter screen 15 can be installed in the container 11 without arranging a mounting structure on the inner wall of the container 11, so that the structure of the container 11 is simple and the processing technology is simple.

[0051] In the first embodiment, further, please refer to Figure 2 and Figure 3As shown, the circumferential edge of the mounting member 14 is first placed in abutment on one end face of the main body 111, and then the peripheral edge of the filter screen 15 is in abutment between the mounting member 14 and the first end cover 112, specifically, the peripheral edge of the filter screen 15 is provided with a filter screen pressing edge 151, the filter screen pressing edge 151 is in abutment with the circumferential edge of the mounting member 14, and then the first end cover 112 is joined to the end outer wall of the main body 111, so that the filter screen pressing edge 151 and the circumferential edge of the mounting member 14 can be clamped and fixed together between the one end face of the main body 111 and the first end cover 112. In this embodiment, since the container 11 adopts a three-section segmented structure to realize the mounting of the mounting member 14, and the filter screen 15 has a simple structure, in order to avoid forming a clamping groove on the mounting member 14 for clamping the peripheral edge of the filter screen 15, the first end cover 112 and the mounting member 14 are respectively in abutment with the opposite two sides of the filter screen 15 in this embodiment to realize the mounting limitation of the peripheral edge of the filter screen 15, so that the mounting and fixing of the filter screen 15 can be realized in advance without forming a clamping groove on the mounting member 14, which not only can firmly mount the filter screen 15, but also makes the structure of the mounting member 14 simple and the manufacturing process simple. It can be understood that in other embodiments of the present application, the filter screen 15 can also be directly mounted by forming a clamping groove on the mounting member 14, which is not limited here.

[0052] Please refer to Figure 3 As shown, the first end cover 112 includes a cover body 1122 and a surrounding edge 1123, the cover body 1122 is in the shape of a circular arc, and the surrounding edge 1123 extends vertically downward from the peripheral edge of the cover body 1122. The first end cover 112 is covered on the main body 111, the filter screen pressing edge 151 of the filter screen 15 abuts against the mounting member 14, and the first end cover 112 and the main body 111 are welded together to realize the mounting of the filter screen 15.

[0053] In Embodiment One, please refer to Figure 2 , Figure 3 and Figure 5 As shown, the mounting member 14 is formed with a plurality of filter flow guide holes 1411 and a plurality of flow guide grooves 1413. Specifically, the mounting member 14 is in the shape of a plate, and each filter flow guide hole 1411 is uniformly distributed on the mounting member 14. Through the arrangement of the filter flow guide holes 1411, the gas-liquid mixture can be preliminarily filtered and flow-guided and dispersed, thereby improving the separation effect of the gas-liquid separator 1. The flow guide grooves 1413 are formed at positions close to the center of the mounting member 14, and the two ends of the flow guide grooves 1413 are connected to the side surface of the mounting member 14 facing the filter screen 15 and the filter flow guide holes 1411, respectively, so as to flow the liquid separated and gathered on the side surface of the mounting member 14 facing the filter screen 15 into the filter flow guide holes 1411.

[0054] And, the center position of the mounting piece 14 is provided with a crown-shaped protrusion 1412 which is arc-shaped and protrudes towards the filter screen 15. The crown-shaped protrusion 1412 is arranged to uniformly disperse and guide the liquid filtered and separated by the filter screen 15 to the surface of the mounting piece 14 in the circumferential direction. Then, each filter guide hole 1411 is uniformly arranged around the guide groove 1413, and the filter guide hole 1411 is arranged to be arc-shaped and concave away from the filter screen 15. The filter guide hole 1411 is arranged to uniformly guide the separated liquid to flow to the second output port 1131.

[0055] In the first embodiment, referring to Figures 2 to 4 The gas-liquid separator of the present application further comprises a separation piece 13 which is installed in the interior of the container 11 and is located between the input pipe 12 and the second end cover 113. The separation piece 13 is provided with separation guide holes 1311 which are arranged to allow the gas-liquid mixture to flow through. Specifically, the separation piece 13 in the gas-liquid separator 1 comprises a separation plate 131 and a separation side plate 132 which is formed around the periphery of the separation plate 131. The separation plate 131 is provided with a plurality of separation guide holes 1311, and the separation side plate 132 is provided with an annular groove 1321 in which a separation welding ring (not shown) is arranged. The separation piece 13 is welded to the inner wall of the container 11 by the separation welding ring.

[0056] During assembly, the separation welding ring is first sleeved in the annular groove 1321, and then the separation piece 13 is axially assembled into the main body 111 of the container 11. After the separation piece 13 is assembled in place, the main body 111 is placed in a heating furnace to melt the separation welding ring and cool it to fix the separation piece 13 in the main body 111.

[0057] When the spacer 13 is fixed, the partition plate 131 of the spacer 13 is arranged vertically to the axial direction of the container 11, and the interval between the partition plate 131 and the end face of the main body 111 facing the second end cover 113 is 10mm-20mm, so as to reduce the size of the container 11, and make the overall volume of the gas-liquid separator more compact. The spacer side plate 132 is annular and formed on the circumference of the upper side of the partition plate 131. The partition plate 131 is generally arranged below the input pipe 12, and the partition plate 131 is used to block the gas-liquid mixture input by the input pipe 12, and the partition plate 131 is provided with a plurality of spacer flow guide holes 1311, which are used to uniformly distribute the liquid in the gas-liquid mixture on the surface of the partition plate 131, and then the liquid flows to the second output port 1131, while the gas in the gas-liquid mixture is blocked and flows upward to the filtering structure and is output from the first output port 1121, so as to filter the gas-liquid mixture and stabilize the lower flow field. In addition, in the first embodiment, the spacer side plate 132 is formed on the circumference of the partition plate 131 to be welded in the container 11, and the spacer side plate 132 is cylindrical and has a certain elasticity when it is loaded into the container 11, so as to facilitate the installation of the spacer 13 in the container 11.

[0058] The part of the input pipe 12 between the spacer 13 and the filtering structure is arranged as a straight pipe extending from the second end cover 113 to the first end cover 112, and the output port of the input pipe 12 faces the filtering structure. The interval between the output port of the input pipe 12 and the side of the filtering structure facing the second end cover 113 is 5mm-10mm, so as to ensure that the gas-liquid mixture can be output to collide with the filtering structure, but the impact force is not too large, and the noise caused by the filtering structure being impacted too severely due to the too small interval between the output port of the input pipe 12 and the filtering screen 15 is eliminated or reduced.

[0059] Further, the pipe axis of the part of the input pipe 12 between the spacer 13 and the filtering structure is preferably coincided with the central axis of the main body 111. Since the output port of the input pipe 12 facing the filtering structure is opposite to the bottom of the crown-shaped protrusion 1412 (the bottom of the crown-shaped protrusion 1412 is a spherical concave groove facing inwardly to the filtering screen 15), when the gas-liquid mixture is output to the bottom groove of the crown-shaped protrusion 1412, the liquid in the gas-liquid mixture will collide and gather into water droplets on the surface of the groove, and then slide to the spacer 13 and flow to the second output port 1131 through the spacer flow guide holes 1311, so as to further improve the separation efficiency of the liquid in the gas-liquid mixture by using the bottom groove of the crown-shaped protrusion 1412.

[0060] In the first embodiment, please refer to Figure 2 and Figure 3As shown, the gas-liquid separator 1 comprises two functional parts, a filter structure and a partition 13, the filter structure is installed between the input pipe 12 and the first output port 1121, and the partition 13 is installed between the input pipe 12 and the second output port 1131. The gas-liquid mixture flows into the input pipe 12, is filtered by the filter screen 15 and the mounting part 14, and is dispersed, and the gas therein is output from the first output port 1121 on the first end cover 112; the liquid therein is guided to flow by the partition 13, enters the lower flow field, and is then output from the second output port 1131 of the main body 111.

[0061] Embodiment Two

[0062] As shown in Figure 6 and Figure 7 , which shows a structural schematic diagram of the gas-liquid separator of embodiment two. Compared with the gas-liquid separator of embodiment one, the gas-liquid separator of embodiment two has the following differences.

[0063] In embodiment two, the part of the input pipe 12 between the partition 13 and the filter structure is arranged as a straight pipe extending in the direction from the second end cover 113 to the first end cover 112, the end of the input pipe 12 towards the filter structure is a closed end, and the side wall of the part of the input pipe 12 between the partition 13 and the filter structure is provided with a side output port 121. At this time, the gas-liquid mixture output laterally into the container 11 changes from vertical flow to horizontal flow, which can reduce the vertical impact of the gas-liquid mixture on the filter structure, and reduce the fine liquid beads in the gas-liquid mixture from being carried through the filter structure by the vertical impact force of the gas-liquid mixture and output from the first output port 1121, thereby improving the gas-liquid separation efficiency.

[0064] Compared with the gas-liquid separator of embodiment one, the gas-liquid separator of embodiment two has the above structural differences, and the rest of the structures are the same, which will not be described here.

[0065] Embodiment Three

[0066] As shown in Figure 8 and Figure 9 , which shows a structural schematic diagram of the gas-liquid separator of embodiment three. Compared with the gas-liquid separator of embodiment one, the gas-liquid separator of embodiment two has the following differences.

[0067] In embodiment three, the part of the input pipe 12 between the partition 13 and the filter structure is arranged to extend spirally in the direction from the second end cover 113 to the first end cover 112.

[0068] Alternatively, the part of the input pipe 12 between the partition 13 and the filter structure is arranged to bend in a plane perpendicular to the central axis of the main body 111.

[0069] In the gas-liquid separator of the third embodiment, the pipe segments arranged in a helical extension or the pipe segments arranged in a horizontal bending convert the flow direction of the gas-liquid mixture transported into the interior of the container 11 from vertical to horizontal, which can reduce the vertical impact of the gas-liquid mixture on the filtering structure, reduce the fine liquid beads in the gas-liquid mixture from being carried through the filtering structure by the vertical impact force of the gas-liquid mixture and output from the first output port 1121, thereby improving the gas-liquid separation efficiency.

[0070] The gas-liquid separator of the third embodiment and the gas-liquid separator of the first embodiment are the same in other structures except for the above different structures, and thus will not be described herein.

[0071] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the embodiments of the present application shall be included in the protection scope of the present application.

Claims

1. A gas-liquid separator, characterized in that, include: A container, comprising a body, a first end cap, and a second end cap, wherein the body has openings at both ends, and the first end cap and the second end cap are respectively engaged with the openings at both ends of the body, the first end cap having a first outlet, and the second end cap having a second outlet. An input tube, one end of which extends into the interior of the container from the second end cap; A filter structure is clamped and fixed between one end face of the main body and the first end cap. The filter structure includes a mounting component and a filter screen. The filter screen is mounted on the mounting component and located on the side of the mounting component facing the first end cap. The circumferential edge of the mounting component is clamped and fixed between one end face of the main body and the first end cap. The mounting component is provided with a filter guide hole for supplying gas-liquid mixture flow and a crown-shaped protrusion that convexes arc-shaped towards the filter screen. The bottom of the crown-shaped protrusion is a spherical groove that is concave towards the filter screen. The output port of the input pipe faces the filter structure, and the output port of the input pipe is directly opposite the bottom of the crown-shaped protrusion.

2. The gas-liquid separator according to claim 1, characterized in that, The filter screen has a filter screen pressing edge on its circumferential edge, and the filter screen pressing edge is clamped and fixed between the circumferential edge of the mounting component and the first end cap.

3. The gas-liquid separator according to claim 1, characterized in that, The mounting component is also provided with a flow guide groove, and a plurality of filter flow guide holes protrude around the crown-shaped part. The flow guide groove and the plurality of filter flow guide holes correspond one-to-one. The two ends of the flow guide groove are respectively connected to the side surface of the mounting component facing the filter screen and the filter flow guide hole, so as to guide the liquid on the side surface of the mounting component facing the filter screen into the filter flow guide hole.

4. The gas-liquid separator according to any one of claims 1-3, characterized in that, The gas-liquid separator also includes an isolation element installed inside the container. The input pipe passes through the isolation element, and the output port of the input pipe is located between the isolation element and the filter structure. The isolation element is provided with an isolation guide hole for the flow of the gas-liquid mixture.

5. The gas-liquid separator according to claim 4, characterized in that, The isolation component includes a partition and an isolation side plate formed on the circumferential edge of the partition. An annular groove is formed on the isolation side plate, and an isolation welding ring is provided in the annular groove. The isolation component is welded to the inner wall of the main body through the isolation welding ring. The partition is provided with the isolation guide hole.

6. The gas-liquid separator according to claim 5, characterized in that, The distance between the end faces of the partition and the main body facing the second end cap is 10mm-20mm.

7. The gas-liquid separator according to claim 4, characterized in that, The portion of the input pipe located between the isolator and the filter structure is configured as a straight pipe extending in the direction from the second end cap to the first end cap.

8. The gas-liquid separator according to claim 7, characterized in that, The distance between the output port of the input tube and the side of the filter structure facing the second end cap is 5mm-10mm.

9. The gas-liquid separator according to claim 7, characterized in that, The axis of the portion of the input pipe located between the isolator and the filter structure coincides with the central axis of the main body.

10. The gas-liquid separator according to claim 4, characterized in that, The portion of the input tube located between the isolator and the filter structure is configured to extend spirally along the direction from the second end cap to the first end cap, or to bend in a plane perpendicular to the central axis of the main body.

11. A refrigeration device, characterized in that, Includes the gas-liquid separator as described in any one of claims 1-10.

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