Valve assembly and air conditioning system

Abstract

Disclosed are a valve assembly (100) and an air conditioning system (1000). The valve assembly (100) comprises a valve body (10), a first stainless steel pipe (40), and a filter (50); the valve body (10) has a valve cavity for accommodating a fluid, and the valve body (10) further has a first interface (11) and a second interface (12) which are in communication with the valve cavity; the first interface (11) and the second interface (12) are respectively located on two opposite sides of the valve body (10); a first end of the first stainless steel pipe (40) is inserted into the first interface (11), and the filter (50) is inserted into the second interface (12), or the filter (50) is connected to a second end of the first stainless steel pipe (40), and the second interface (12) is adapted for connection with an external pipe. In this way, the problem of high leakage rates of T-shaped stop valves of air conditioning systems is solved.

Description

Valve assemblies and air conditioning systems

[0001] This application claims priority to Chinese Patent Application No. 2024230314685, filed on December 9, 2024, entitled "Valve Assembly and Air Conditioning System", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of air conditioning manufacturing technology, and in particular to a valve assembly and an air conditioning system. Background Technology

[0003] In related technologies, the indoor and outdoor units of an air conditioner are connected via a connecting pipe, and a shut-off valve is installed on the connecting pipe. When the air conditioning system is operating normally, the shut-off valve opens, allowing the indoor and outdoor units to connect. However, conventional shut-off valves are usually T-shaped, which have a relatively high leakage rate. Summary of the Invention

[0004] This application provides a valve assembly and an air conditioning system that can solve the technical problem of high leakage rate of T-shaped shut-off valves in air conditioning systems.

[0005] In a first aspect, embodiments of this application provide a valve assembly, which includes:

[0006] The valve body has a valve cavity for containing fluid, and the valve body also has a first interface and a second interface communicating with the valve cavity, the first interface and the second interface being located on opposite sides of the valve body, respectively;

[0007] A first stainless steel pipe, wherein the first end of the first stainless steel pipe is inserted into the first interface; and

[0008] The filter is inserted into the second interface, or the filter is connected to the second end of the first stainless steel pipe, and the second interface is used to connect to an external pipeline.

[0009] In some embodiments, the valve body has a first interface pipe and a second interface pipe on opposite sides, respectively;

[0010] The first interface tube defines the first interface, the first stainless steel tube is inserted into the first interface tube, and the second end of the first stainless steel tube is connected to the filter.

[0011] The second interface tube defines the second interface, and the second interface tube and the first interface tube are arranged along the same axial direction;

[0012] The valve assembly also includes a second stainless steel tube, which is inserted into the second interface tube.

[0013] In some embodiments, the filter includes:

[0014] The housing has a flanged opening, the second end of the first stainless steel connecting pipe is inserted into the flanged opening, and the first stainless steel connecting pipe is welded to the housing;

[0015] A filter assembly is disposed inside the housing.

[0016] In some embodiments, the housing has a flanged wall defining the flange opening, and the first stainless steel fitting has an overlapping surface welded to the flanged wall, with a weld d between the flanged wall and the overlapping surface, where d satisfies: 0 < d ≤ 0.1 mm.

[0017] In some embodiments, the overlap length between the flanged wall and the overlapping surface along the axial direction of the first stainless steel pipe is L, where L satisfies: 7mm≤L≤30mm.

[0018] In some embodiments, at least one of the flanged wall surface and the overlapping surface is subjected to wire drawing or knurling treatment.

[0019] In some embodiments, the valve assembly further includes a valve core movably disposed on the first stainless steel connecting pipe.

[0020] In some embodiments, the filter is located downstream of the valve body along the direction of fluid flow through the valve body.

[0021] In some embodiments, the filter further includes a first copper connector connected to one end of the housing opposite to the valve body.

[0022] In some embodiments, the valve body is a stainless steel valve body.

[0023] In some embodiments, the housing is a stainless steel housing.

[0024] In some embodiments, the valve assembly further includes a second stainless steel connector comprising a first pipe segment and a second pipe segment connected to each other, wherein the axis of the second pipe segment intersects the axis of the first pipe segment, and the first pipe segment is connected to the second interface pipe.

[0025] In some embodiments, the valve assembly further includes a second copper fitting connected to the second pipe segment.

[0026] In some embodiments, the valve assembly further includes a mounting bracket connected to the valve body, and the mounting bracket has mounting holes.

[0027] In some embodiments, the filter is in communication with the second interface and is located upstream of the valve body along the direction of fluid flow through the valve body.

[0028] In some embodiments, the filter includes:

[0029] The housing has a first protrusion and a second protrusion, both of which protrude toward the center line of the housing, and the first protrusion and the second protrusion extend around the center line of the housing, and the first protrusion and the second protrusion are arranged at intervals along the extension direction of the center line of the housing.

[0030] A filter assembly is disposed within the housing and is snapped between the first protrusion and the second protrusion.

[0031] In some embodiments, the filtering component includes:

[0032] The first component includes a snap-fit ​​portion and a first plate-shaped portion that are connected to each other. The snap-fit ​​portion is snapped between the first protrusion and the second protrusion, and the first plate-shaped portion and the snap-fit ​​portion are arranged at an angle.

[0033] The second component includes a connecting portion and a second plate-shaped portion that are connected to each other. The connecting portion is connected to the snap-fit ​​portion, and the second plate-shaped portion and the first plate-shaped portion are arranged along the extension direction of the center line of the housing.

[0034] The filter screen includes a screen end, a screen side, and a screen bottom arranged sequentially along the extension direction of the center line of the housing. The screen end is sandwiched between the first plate-shaped portion and the second plate-shaped portion. The screen side is connected to the screen end and extends around the center line of the housing. The screen bottom is connected to the end of the screen side away from the screen end.

[0035] In some embodiments, the filter assembly further includes a support frame connected to the second component and extending to abut against the end of the mesh to support the filter mesh.

[0036] In some embodiments, the support frame includes a plurality of support members arranged around the centerline of the housing, each support member comprising:

[0037] A connecting plate, which is connected to the second plate-shaped portion;

[0038] A support rod, the first end of which is connected to the connecting plate, the support rod extending into the side portion of the net and contacting the side portion of the net, and the second end of which extends toward the bottom of the net;

[0039] An abutment plate is connected to the second end of the support rod and abuts against the bottom of the net.

[0040] Secondly, embodiments of this application provide an air conditioning system, which includes an indoor unit, an outdoor unit, and a valve assembly as described above, wherein the valve assembly connects the indoor unit and the outdoor unit. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 is a schematic diagram of a first structure of the valve assembly provided in the first embodiment of this application;

[0043] Figure 2 is a schematic diagram of a second structure of the valve assembly provided in the first embodiment of this application;

[0044] Figure 3 is a structural schematic diagram of the valve assembly provided in the second embodiment of this application from a first perspective;

[0045] Figure 4 is a structural schematic diagram of the valve assembly provided in the second embodiment of this application from a second perspective;

[0046] Figure 5 is a schematic diagram of the cross-sectional structure at point AA in Figure 3;

[0047] Figure 6 is a schematic cross-sectional view of the filter provided in an embodiment of this application;

[0048] Figure 7 is a schematic cross-sectional view of the filter assembly provided in an embodiment of this application;

[0049] Figure 8 is an enlarged structural diagram of point B in Figure 7;

[0050] Figure 9 is a three-dimensional structural diagram of the filter component provided in an embodiment of this application;

[0051] Figure 10 is a structural schematic diagram of the outdoor unit provided in an embodiment of this application;

[0052] Figure 11 is a schematic diagram of the connection between the outdoor unit and the indoor unit provided in an embodiment of this application;

[0053] Figure 12 is a schematic diagram of the cooling flow path of the air conditioning system provided in the first embodiment of this application;

[0054] Figure 13 is a schematic diagram of the heating flow path of the air conditioning system provided in the first embodiment of this application;

[0055] Figure 14 is a schematic diagram of the flow path structure of the air conditioning system provided in the second embodiment of this application.

[0056] Explanation of reference numerals in the attached figures:

[0057] 1000, Air conditioning system; 100, Valve assembly; 100a, First valve assembly; 100b, Second valve assembly; 10, Valve body; 11, First interface; 12, Second interface; 20, First interface pipe; 30, Second interface pipe; 40, First stainless steel connecting pipe; 41, Overlapping surface; 50, Filter; 51, Housing; 511, Flanged opening; 512, Flanged wall surface; 513, First protrusion; 514, Second protrusion; 52, Filter assembly; 521, First component; 5211, Snap-fit ​​portion; 5212, First plate-shaped portion; 522, Second component; 5221, Connecting portion; 5222, Second plate-shaped portion; 523, Filter screen ; 5231, Mesh end; 5232, Mesh side; 5233, Mesh bottom; 524, Support frame; 5240, Support component; 5241, Connecting plate; 5242, Support rod; 5243, Abutment plate; 60, Valve core; 70, First copper pipe; 80, Second stainless steel pipe; 81, First pipe section; 82, Second pipe section; 90, Second copper pipe; 101, Mounting bracket; 1011, Mounting hole; 200, Indoor unit; 300, Outdoor unit; 301, Compressor; 302, Oil separator; 303, Four-way valve; 304, Heat exchanger; 305, Electronic expansion valve; 306, Refrigerant heat dissipation device; 307, Gas-liquid separator. Embodiments of the present invention

[0058] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0059] In the first aspect, please refer to Figures 1 to 5, which show a valve assembly 100 provided in an embodiment of this application. The valve assembly 100 includes a valve body 10, a first stainless steel pipe 40, and a filter 50. The valve body 10 has a valve cavity for containing fluid, and the valve body 10 also has a first interface 11 and a second interface 12 communicating with the valve cavity. The first interface 11 and the second interface 12 are respectively located on opposite sides of the valve body 10. The first end of the first stainless steel pipe 40 is inserted into the first interface 11, and the filter 50 is inserted into the second interface 12. Alternatively, the filter 50 is connected to the second end of the first stainless steel pipe 40, and the second interface 12 is used to connect to an external pipeline.

[0060] Optionally, the valve body 10 can be spherical, cylindrical, or other shapes. This application embodiment does not limit the specific shape of the valve body 10. Taking a cylindrical outer contour of the valve body 10 as an example, the valve body 10 can have a first interface 11 and a second interface 12 at opposite ends, thus forming a structure similar to a ball valve. Compared to a T-shaped gate valve, the valve assembly 100 in this application embodiment has a simpler structure, with fewer valve components and sealing surfaces, reducing the risk of leakage.

[0061] In this embodiment, the first end of the first stainless steel pipe 40 is inserted into the first interface 11, and the first stainless steel pipe 40 is welded to the valve body 10, so that the first stainless steel pipe 40 and the valve body 10 can form an integral whole. The second end of the first stainless steel pipe 40 can be connected to the filter 50, so that the first stainless steel pipe 40 can connect the valve body 10 and the filter 50 together, so that the valve body 10 and the filter 50 can form an integral whole. The second interface 12 can be connected to an external pipeline, connecting the entire valve assembly 100 between the indoor unit 200 and the outdoor unit 300 of the air conditioning system 1000. When welding the connecting pipe between the indoor unit 200 and the outdoor unit 300, the impurities generated during welding can be filtered out by the filter 50, thereby preventing welding impurities from entering the air conditioning system 1000 and preventing damage to the components in the air conditioning system 1000, such as the compressor 301 and the electronic expansion valve 305.

[0062] In addition, the filter 50 and the valve body 10 are integrated into one unit through the first stainless steel pipe 40, and the filter 50 and the valve body 10 are connected to the housing of the outdoor unit 300, thereby making full use of the internal space of the outdoor unit 300 housing.

[0063] In some other embodiments, the filter 50 can be plugged into the second interface 12 and welded to the valve body 10, so that the valve body 10 can be directly connected to the filter 50. This allows the filter 50 and the valve body 10 to be directly integrated into one unit. When the entire valve assembly 100 is connected between the indoor unit 200 and the outdoor unit 300 of the air conditioning system 1000, the impurities generated during welding can also be filtered out by the filter 50, and the space occupied by the valve assembly 100 can be further reduced.

[0064] Please refer to Figures 1 and 2. In some embodiments, the valve body 10 has a first interface tube 20 and a second interface tube 30 on opposite sides, respectively. The first interface tube 20 defines a first interface 11. A first stainless steel tube 40 is inserted into the first interface tube 20. The second end of the first stainless steel tube 40 is connected to the filter 50. The second interface tube 30 defines a second interface 12. The second interface tube 30 and the first interface tube 20 are arranged along the same axial direction. The valve assembly 100 also includes a second stainless steel tube 80, which is inserted into the second interface tube 30.

[0065] Optionally, a first interface pipe 20 and a second interface pipe 30 can be respectively provided on opposite sides of the valve body 10, and both the first interface pipe 20 and the second interface pipe 30 can extend along the axial direction of the valve body 10, so that the first interface pipe 20 and the second interface pipe 30 can be arranged along the same axial direction, thereby forming a ball valve-like structure of the valve body 10, the first interface pipe 20 and the second interface pipe 30. The first interface pipe 20 can form a first interface 11 and the second interface pipe 30 can form a second interface 12. The valve body 10 can be easily connected to the first stainless steel pipe 40 through the first interface pipe 20 and to the second stainless steel pipe 80 through the second interface pipe 30. The other end of the second stainless steel pipe 80 can be connected to the pipeline inside the outdoor unit 300, so that the valve body 10 can be more easily installed in the outdoor unit 300.

[0066] Optionally, the centerlines of the first interface pipe 20, the second interface pipe 30, and the valve body 10 are collinear, allowing the fluid to flow more smoothly within the valve cavity.

[0067] Please refer to Figures 1 and 6. In some embodiments, the filter 50 includes a housing 51 and a filter assembly 52. ​​The housing 51 may have a flanged opening 511. The second end of a first stainless steel pipe 40 may be inserted into the flanged opening 511, and the first stainless steel pipe 40 may be welded to the housing 51. The filter assembly 52 is disposed inside the housing 51.

[0068] Optionally, both the housing 51 and the filter assembly 52 can be made of stainless steel. Stainless steel has good heat resistance, which can prevent the filter assembly 52 from being damaged by the high temperature during welding. One end of the housing 51 can have a flange that flips outward from the housing 51. The flange can form a flange opening 511 at one end of the housing 51. The second end of the first stainless steel pipe 40 can be inserted into the flange opening 511, so that the first stainless steel pipe 40 and the housing 51 can have an overlapping part, and the first stainless steel pipe 40 can be welded to the flange. In other words, the first stainless steel pipe 40 and the housing 51 can have an overlapping part along the radial direction of the first stainless steel pipe 40, thereby increasing the structural strength at the connection between the first stainless steel structure and the housing 51, and also improving the fatigue resistance of the first stainless steel structure during transportation and operation.

[0069] Please refer to Figures 1 and 2. In some embodiments, the housing 51 may have a flanged wall 512 defining a flange opening 511, the first stainless steel pipe 40 may have an overlapping surface 41 welded to the flanged wall 512, and there is a weld d between the flanged wall 512 and the overlapping surface 41, where d satisfies: 0 < d ≤ 0.1 mm.

[0070] Optionally, the flanged wall 512 is part of the housing 51. The flanged wall 512 is configured to define a flange opening 511. The overlapping surface 41 is the part of the first stainless steel pipe 40 that contacts and is welded to the flanged wall 512. The weld is the connection formed between the flanged wall 512 and the overlapping surface 41 by welding. That is, during welding, the solder flows from the weld into the space between the flanged wall 512 and the first stainless steel pipe 40. When the size of the weld d satisfies 0 < d ≤ 0.1 mm, the tightness and strength of the welding between the first stainless steel pipe 40 and the housing 51 can be ensured, while avoiding stress concentration or other problems that may be caused by an excessively large weld.

[0071] Please refer to Figures 1 and 2. In some embodiments, the overlap length between the flanged wall surface 512 and the overlapping surface 41 along the axial direction of the first stainless steel pipe 40 is L, where L satisfies: 7mm≤L≤30mm.

[0072] Optionally, the overlap length refers to the length at which the flanged wall surface 512 and the overlapping surface 41 contact and weld with each other in the axial direction of the first stainless steel pipe 40. The selection of the overlap length is crucial to the strength and sealing performance of the connector. When the overlap length L is greater than or equal to 7 mm, the weld between the first stainless steel pipe 40 and the housing 51 has sufficient strength to withstand the expected load, and a sufficient overlap length helps to form a tight weld, thereby preventing fluid or gas leakage. When the overlap length L is less than or equal to 30 mm, it can prevent the welding length from being too long, which would result in the first stainless steel pipe 40 being too long and causing material waste.

[0073] In some embodiments, at least one of the flanged wall surface 512 and the overlapping surface 41 is subjected to wire drawing or knurling treatment.

[0074] Alternatively, wire drawing is a process that forms continuous, parallel fine scratches on a metal surface using mechanical methods (such as using a sanding belt or wire drawing wheel). By performing wire drawing on the flange wall 512 or the overlapping surface 41, a specific texture and luster can be presented on the surface of the flange wall 512 or the overlapping surface 41, while increasing the surface hardness and wear resistance. It also facilitates the filling of solder between the flange wall 512 and the overlapping surface 41, so that the flange wall 512 and the overlapping surface 41 can be welded more stably.

[0075] Optionally, knurling is a process that forms a specific shape and size of raised and recessed texture on a metal surface by mechanical rolling. By performing knurling on the flange wall 512 or the overlapping surface 41, the surface roughness of the flange wall 512 or the overlapping surface 41 can be increased, thereby increasing the friction between the flange wall 512 and the overlapping surface 41. This allows the molten solder to adhere between the flange wall 512 and the overlapping surface 41, improving the stability and reliability of the welding.

[0076] Please refer to Figures 1 to 4. In some embodiments, the valve assembly 100 may also include a valve core 60, which is movably disposed on the first stainless steel connecting pipe 40.

[0077] Optionally, when the valve core 60 is movably mounted on the first stainless steel connecting pipe 40, the first stainless steel connecting pipe 40 typically has a channel or chamber that matches the valve core 60 to ensure that fluid can pass through smoothly or be cut off. More specifically, the valve core 60 can move within the first stainless steel connecting pipe 40 by rotation, sliding, or other means, thereby changing the open or closed state of the fluid passage. This increases the flexibility and controllability of the valve assembly 100. By precisely controlling the movement of the valve core 60, precise control of fluid flow can be achieved, thereby meeting various application requirements.

[0078] In some embodiments, the filter 50 may be disposed on the downstream side of the valve body 10 along the fluid flow direction through the valve body 10.

[0079] Optionally, along the flow direction of the fluid, the filter 50 can be located downstream of the valve body 10. When the valve body 10 assembly is welded between the outdoor unit 300 and the indoor unit 200, the impurities generated can flow with the fluid to the filter 50, so that the welding impurities can be filtered out by the filter 50, thereby preventing the welding impurities from entering the circulation loop of the air conditioning system 1000 and preventing the components of the air conditioning system 1000 from being damaged by the welding impurities.

[0080] Please refer to Figures 1 to 4. In some embodiments, the filter 50 may also include a first copper connector 70, which may be connected to the end of the housing 51 facing away from the valve body 10.

[0081] Optionally, the end of the housing 51 facing away from the first stainless steel pipe 40 can also have a flange, which can form a second flange opening 511. That is, the opposite ends of the housing 51 can each have a flange opening 511. The first copper pipe 70 can be inserted into the second flange opening 511 and welded to the second flange opening 511. The first copper pipe 70 can be connected to an external pipeline, and the filter 50 can be connected to an external pipeline more conveniently through the first copper pipe 70.

[0082] Optionally, a plug may also be provided at the end of the first copper pipe 70 away from the housing 51. The plug seals the first copper pipe 70, and by providing the plug, it can be prevented that the refrigerant leaks from the first copper pipe 70 due to excessive refrigerant during the transportation of the outdoor unit 300.

[0083] In some embodiments, the valve body 10 is a stainless steel valve body 10, and the housing 51 is a stainless steel housing 51.

[0084] Optionally, the valve body 10 is made of stainless steel, and the housing 51 is also made of stainless steel. Stainless steel has advantages such as high strength and high temperature resistance, which makes it easy to weld the valve body 10 and the housing 51 into a whole through the first stainless steel pipe 40.

[0085] Please refer to Figures 1 and 2. In some embodiments, the valve assembly 100 may further include a second stainless steel pipe 80, which includes a first pipe segment 81 and a second pipe segment 82 connected to each other, and the axis of the second pipe segment 82 is arranged to intersect the axis of the first pipe segment 81. The first pipe segment 81 is connected to the second interface pipe 30.

[0086] Optionally, the axis of the first pipe section 81 and the axis of the second pipe section 82 can be set perpendicular to each other, so that the shape of the second stainless steel connecting pipe 80 is an L-shaped pipe, and the first pipe section 81 can be connected to the second interface pipe 30, that is, one end of the second stainless steel connecting pipe 80 can be connected to the valve body 10, and the other end of the second stainless steel connecting pipe 80 can be connected to the pipe inside the outdoor unit 300. Connecting the valve body 10 to the outdoor unit 300 through the L-shaped second stainless steel connecting pipe 80 makes it easier to install the valve body 10 in the outdoor unit 300, and the L-shaped second stainless steel connecting pipe 80 can change the installation direction of the valve body 10, which can make reasonable use of the internal space of the outdoor unit 300.

[0087] Referring to Figure 2, in some embodiments, the valve assembly 100 may also include a second copper fitting 90, which may be connected to the second pipe segment 82.

[0088] Optionally, the second copper connector 90 can be connected to the end of the second pipe section 82 away from the first pipe section 81, and the second pipe section 82 can be connected to the internal pipes of the outdoor unit 300 through the second copper connector 90, making it easier to weld the second copper connector 90 to the internal pipes of the outdoor unit 300.

[0089] Please refer to Figures 1 and 2. In some embodiments, the valve assembly 100 may also include a mounting bracket 101, which can be connected to the valve body 10, and the mounting bracket 101 has a mounting hole 1011.

[0090] Optionally, the mounting bracket 101 can be connected to the outer wall of the valve body 10, and the mounting bracket 101 is located between the first interface pipe 20 and the second interface pipe 30. The mounting bracket 101 can extend in a direction away from the valve body 10. The outdoor unit 300 has a valve mounting plate inside its housing. The mounting bracket 101 can be connected to the valve mounting plate, so that the valve body 10 is fixed inside the outdoor unit 300. In this embodiment, the mounting bracket 101 is provided with a mounting hole 1011, into which bolts can be inserted and threadedly connected to the valve mounting plate, which can easily fix the valve body 10 and facilitate the disassembly and replacement of the valve body 10.

[0091] Please refer to Figures 3 and 4. In some embodiments, the filter 50 is connected to the second interface 12 and is located on the upstream side of the valve body 10 along the direction of fluid flow through the valve body 10.

[0092] Optionally, along the flow direction of the fluid, the filter 50 can be disposed on the upstream side of the valve body 10. When the valve body assembly 100 is welded between the outdoor unit 300 and the indoor unit 200, the filter 50 can prevent impurities from entering the downstream valve body 10 and protect the valve body 10.

[0093] Referring to Figures 5 and 6, in some embodiments, the filter 50 includes a housing 51 and a filter assembly 52. ​​The housing 51 has a first protrusion 513 and a second protrusion 514, both of which protrude toward the centerline of the housing 51 and extend around the centerline of the housing 51. The first protrusion 513 and the second protrusion 514 are spaced apart along the extension direction of the centerline of the housing 51. The filter assembly 52 is disposed inside the housing 51 and is snapped between the first protrusion 513 and the second protrusion 514.

[0094] Optionally, the housing 51 has a cylindrical structure and an internal mounting cavity. Each end of the housing 51 has an opening communicating with the mounting cavity. The centerline of the housing 51 passes through the two openings. A first protrusion 513 and a second protrusion 514 are provided on the peripheral sidewall of the housing 51. Both the first protrusion 513 and the second protrusion 514 extend around the centerline of the housing 51 and are spaced apart along the extension direction of the centerline, forming a snap-fit ​​space between them. A portion of the filter assembly 52 can snap into the first protrusion 513 and the second protrusion 514, allowing the filter assembly 52 to be fixed within the mounting cavity. The filter assembly 52 covers the cross-section of the housing 51. Fluid flowing into the housing 51 must pass through the filter assembly 52 before flowing out of the housing 51, ensuring that the filter assembly 52 effectively filters out impurities flowing through the housing 51.

[0095] In some embodiments, the first protrusion 513 and the second protrusion 514 can both be welded to the filter assembly 52, so that the filter assembly 52 is fixed more stably, and the first protrusion 513 and the second protrusion 514 can provide welding surfaces, so that the filter assembly 52 can be easily welded and fixed inside the housing 51.

[0096] Referring to Figures 7 and 8, in some embodiments, the filter assembly 52 includes a first component 521, a second component 522, and a filter screen 523. The first component 521 includes a snap-fit ​​portion 5211 and a first plate-shaped portion 5212 connected to each other. The snap-fit ​​portion 5211 snaps between a first protrusion 513 and a second protrusion 514. The first plate-shaped portion 5212 is disposed at an angle to the snap-fit ​​portion 5211. The second component 522 includes a connecting portion 5221 and a second plate-shaped portion 5222 connected to each other. The connecting portion 5221 is connected to the snap-fit ​​portion 5211, and the second plate-shaped portion 5222 is disposed at an angle to the first protrusion 513 and the second protrusion 514. The first plate-shaped portion 5222 and the second plate-shaped portion 5212 are arranged along the extension direction of the center line of the housing 51. The filter screen 523 includes a screen end 5231, a screen side portion 5232 and a screen bottom 5233 arranged sequentially along the extension direction of the center line of the housing 51. The screen end 5231 is sandwiched between the first plate-shaped portion 5212 and the second plate-shaped portion 5222. The screen side portion 5232 is connected to the screen end 5231 and extends around the center line of the housing 51. The screen bottom 5233 is connected to the end of the screen side portion 5232 away from the screen end 5231.

[0097] Optionally, the snap-fit ​​portion 5211 has a circular structure. The width of the snap-fit ​​portion 5211 extending along the center line of the housing 51 is the first width, and the width of the gap between the first protrusion 513 and the second protrusion 514 is the second width. The first width and the second width are approximately equal, so that the snap-fit ​​portion 5211 can be interference-fitted between the first protrusion 513 and the second protrusion 514. The first plate-shaped portion 5212 also has a circular structure, and the first plate-shaped portion 5212 is perpendicular to the snap-fit ​​portion 5211, so that the first plate-shaped portion 5212 can provide a supporting plane. The snap-fit ​​portion 5211 can be made of stainless steel, so that the snap-fit ​​portion 5211 can be welded to the first protrusion 513 and the second protrusion 514, so that the snap-fit ​​portion 5211 is more stably fixed between the first protrusion 513 and the second protrusion 514.

[0098] The connecting part 5221 can also be a circular structure, and the connecting part 5221 is also made of stainless steel. The connecting part 5221 can be welded to the snap-fit ​​part 5211. The second plate-shaped part 5222 is perpendicular to the connecting part 5221. The second plate-shaped part 5222 is arranged parallel to the first plate-shaped part 5212. There is a gap between the second plate-shaped part 5222 and the first plate-shaped part 5212, so that the mesh end 5231 can be clamped between the second plate-shaped part 5222 and the first plate-shaped part 5212. The mesh end 5231 can be welded to the first plate-shaped part 5212 and the second plate-shaped part 5222, so that the filter screen 523 can be stably fixed inside the housing 51. The mesh side part 5232 extends around the center line of the housing 51 to increase the filtration area of ​​the filter screen 523 and improve the filtration efficiency of the filter 50.

[0099] Referring to Figures 7 to 9, in some embodiments, the filter assembly 52 further includes a support frame 524 connected to the second component 522, and the support frame 524 extends to abut against the mesh end 5231 to support the filter mesh 523.

[0100] Optionally, the support frame 524 is a rigid component, and the support frame 524 can be connected to the second component 522, so that the support frame 524 is fixed inside the housing 51. The support frame 524 can also extend to abut against the end of the screen 5231, so that the support frame 524 can support the filter screen 523, so that the filter screen 523 can be kept in an open state to prevent the filter screen 523 from being impacted by the fluid and shrinking into a clump, thereby further improving the filtration efficiency of the filter screen 523.

[0101] Please refer to Figures 7 to 9. In some embodiments, the support frame 524 includes a plurality of support members 5240. The plurality of support members 5240 are arranged around the center line of the housing 51. Each support member 5240 includes a connecting plate 5241, a support rod 5242, and an abutment plate 5243. The connecting plate 5241 is connected to the second plate-shaped portion 5222. The first end of the support rod 5242 is connected to the connecting plate 5241. The support rod 5242 extends into the mesh side portion 5232 and contacts the mesh side portion 5232. The second end of the support rod 5242 extends toward the bottom of the mesh 5233. The abutment plate 5243 is connected to the second end of the support rod 5242 and abuts against the bottom of the mesh 5233.

[0102] Optionally, the connecting plate 5241 can be a flat plate, and the connecting plate 5241 is welded to the second plate-shaped portion 5222. The support rod 5242 is set at an angle to the connecting plate 5241. The first end of the support rod 5242 is connected to the connecting plate 5241, and the support rod 5242 is inserted into the mesh side portion 5232. The support rod 5242 can also contact the mesh side portion 5232 to prevent the mesh side portion 5232 from moving towards the center line of the housing 51, thereby preventing the mesh side portion 5232 from being impacted by the fluid and shrinking into a clump. The abutment plate 5243 is connected to the second end of the support rod 5242, so that the abutment plate 5243 can abut against the bottom of the mesh 5233 to prevent the bottom of the mesh 5233 from moving towards the end of the mesh 5231. The abutment plate 5243 and the support rod 5242 are also set at an angle, which can increase the contact area between the abutment plate 5243 and the bottom of the mesh 5233 to better support the bottom of the mesh 5233.

[0103] In some embodiments, a plurality of abutment plates 5243 are arranged around the center line of housing 51 and are also interconnected, which can increase the structural strength of support frame 524 to better support filter screen 523.

[0104] Secondly, please refer to Figures 10 and 11, which provide an air conditioning system 1000 according to an embodiment of this application. The air conditioning system 1000 includes an indoor unit 200, an outdoor unit 300, and a valve assembly 100 as described above. The valve assembly 100 is capable of connecting the indoor unit 200 and the outdoor unit 300.

[0105] Optionally, as shown in Figures 12 and 13, the outdoor unit 300 and the indoor unit 200 are connected by two valve assemblies 100. These two valve assemblies 100 are defined as a first valve body assembly 100a and a second valve body assembly 100b, respectively. The valve bodies 10 in both the first valve assembly 100a and the second valve assembly 100b are connected to the filter 50 via a first stainless steel pipe 40. The outdoor unit 300 includes a compressor 301, an oil separator 302, a four-way valve 303, a heat exchanger 304, an electronic expansion valve 305, a refrigerant heat dissipation device 306, and a gas-liquid separator 307. The exhaust pipe of the compressor 301 is connected to the oil separator 302 via a pipe, and the oil separator 302 is connected to the first valve body of the four-way valve 303 via a pipe. The four-way valve 303 is connected to the second valve port of the four-way valve 303, which is connected to the heat exchanger 304. The heat exchanger 304 is connected to the electronic expansion valve 305, which is connected to the valve body 10 of the first valve assembly 100a. The pipeline between the electronic expansion valve 305 and the first valve assembly 100a passes through the refrigerant heat dissipation device 306. The filter 50 of the first valve assembly 100a is connected to the indoor unit 200. The indoor unit 200 is connected to the third valve port of the four-way valve 303. A second valve assembly 100b is provided on the pipeline connecting the indoor unit 200 and the third valve port of the four-way valve 303. The fourth valve port of the four-way valve 303 is connected to the gas-liquid separator 307, which is connected to the intake pipe of the compressor 301.

[0106] Optionally, as shown in Figure 14, the valve body 10 in the first valve assembly 100a and the second valve assembly 100b is directly connected to the filter 50. The exhaust pipe of the compressor 301 is connected to the oil separator 302 through a pipeline. The oil separator 302 is connected to the first valve port of the four-way valve 303 through a pipeline. The second valve port of the four-way valve 303 is connected to the heat exchanger 304. The heat exchanger 304 is connected to the electronic expansion valve 305. The electronic expansion valve 305 is connected to the filter 50 of the first valve assembly 100a. The valve body 10 of the valve assembly 100 is connected to the indoor unit 200. The indoor unit 200 is connected to the third valve port of the four-way valve 303. The second valve assembly 100b is provided on the pipeline connecting the indoor unit 200 and the third valve port of the four-way valve 303. The fourth valve port of the four-way valve 303 is connected to the gas-liquid separator 307. The gas-liquid separator 307 is connected to the intake pipe of the compressor 301.

[0107] The beneficial effects of the air conditioning system 1000 in this application are the same as those of the valve assembly 100 in this application, and will not be described again here.

[0108] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0109] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A valve assembly, wherein, include: The valve body has a valve cavity for containing fluid, and the valve body also has a first interface and a second interface communicating with the valve cavity, the first interface and the second interface being located on opposite sides of the valve body, respectively; A first stainless steel pipe, wherein the first end of the first stainless steel pipe is inserted into the first interface; as well as The filter is inserted into the second interface, or the filter is connected to the second end of the first stainless steel pipe, and the second interface is used to connect to an external pipeline.

2. The valve assembly according to claim 1, wherein, The valve body has a first interface pipe and a second interface pipe on opposite sides, respectively. The first interface tube defines the first interface, the first stainless steel tube is inserted into the first interface tube, and the second end of the first stainless steel tube is connected to the filter. The second interface tube defines the second interface, and the second interface tube and the first interface tube are arranged along the same axial direction; The valve assembly also includes a second stainless steel tube, which is inserted into the second interface tube.

3. The valve assembly according to claim 2, wherein, The filter includes: The housing has a flanged opening, the second end of the first stainless steel connecting pipe is inserted into the flanged opening, and the first stainless steel connecting pipe is welded to the housing; A filter assembly is disposed inside the housing.

4. The valve assembly according to claim 3, wherein, The housing has a flanged wall surface that defines the flange opening, and the first stainless steel connecting pipe has an overlapping surface that is welded to the flanged wall surface. There is a weld d between the flanged wall surface and the overlapping surface, where d satisfies: 0 < d ≤ 0.1 mm.

5. The valve assembly according to claim 4, wherein, The overlap length between the flanged wall and the overlapping surface along the axial direction of the first stainless steel pipe is L, where L satisfies: 7mm≤L≤30mm.

6. The valve assembly according to claim 4 or 5, wherein, At least one of the flanged wall surface and the overlapping surface is subjected to wire drawing or knurling treatment.

7. The valve assembly according to any one of claims 1 to 6, wherein, The valve assembly also includes a valve core, which is movably mounted on the first stainless steel connecting pipe.

8. The valve assembly according to any one of claims 2 to 7, wherein, Along the direction of fluid flow through the valve body, the filter is located on the downstream side of the valve body.

9. The valve assembly according to any one of claims 2 to 8, wherein, The filter also includes a first copper connector, which is connected to the end of the housing facing away from the valve body.

10. The valve assembly according to any one of claims 3 to 9, wherein, The valve body is a stainless steel valve body, and the housing is a stainless steel housing.

11. The valve assembly according to any one of claims 2 to 10, wherein, The second stainless steel connector includes a first pipe section and a second pipe section that are connected to each other, and the axis of the second pipe section intersects the axis of the first pipe section. The first pipe section is connected to the second interface pipe.

12. The valve assembly according to claim 11, wherein, The valve assembly also includes a second copper connector, which is connected to the second pipe section.

13. The valve assembly according to any one of claims 1 to 12, wherein, The valve assembly also includes a mounting bracket, which is connected to the valve body and has mounting holes.

14. The valve assembly according to claim 1, wherein, The filter is connected to the second interface and is located on the upstream side of the valve body along the direction of fluid flow through the valve body.

15. The valve assembly according to claims 1-14, wherein, The filter includes: The housing has a first protrusion and a second protrusion, both of which protrude toward the center line of the housing, and the first protrusion and the second protrusion extend around the center line of the housing, and the first protrusion and the second protrusion are arranged at intervals along the extension direction of the center line of the housing. A filter assembly is disposed within the housing and is snapped between the first protrusion and the second protrusion.

16. The valve assembly according to claims 1-15, wherein, The filtering component includes: The first component includes a snap-fit ​​portion and a first plate-shaped portion that are connected to each other. The snap-fit ​​portion is snapped between the first protrusion and the second protrusion, and the first plate-shaped portion and the snap-fit ​​portion are arranged at an angle. The second component includes a connecting portion and a second plate-shaped portion that are connected to each other. The connecting portion is connected to the snap-fit ​​portion, and the second plate-shaped portion and the first plate-shaped portion are arranged along the extension direction of the center line of the housing. The filter screen includes a screen end, a screen side, and a screen bottom arranged sequentially along the extension direction of the center line of the housing. The screen end is sandwiched between the first plate-shaped portion and the second plate-shaped portion. The screen side is connected to the screen end and extends around the center line of the housing. The screen bottom is connected to the end of the screen side away from the screen end.

17. The valve assembly according to claims 1-16, wherein, The filter assembly further includes a support frame connected to the second component, and the support frame extends to abut against the end of the mesh to support the filter mesh.

18. The valve assembly of claim 17, wherein, The support frame includes multiple support members arranged around the centerline of the housing, and each support member includes: A connecting plate, which is connected to the second plate-shaped portion; A support rod, the first end of which is connected to the connecting plate, the support rod extending into the side portion of the net and contacting the side portion of the net, and the second end of which extends toward the bottom of the net; An abutment plate is connected to the second end of the support rod and abuts against the bottom of the net.

19. An air conditioning system, wherein, It includes an indoor unit, an outdoor unit, and a valve assembly as described in any one of claims 1-18, the valve assembly connecting the indoor unit and the outdoor unit.

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