Anti-vibration four-way reversing valve assembly and four-way valve

Abstract

The utility model discloses an anti-vibration type four-way reversing valve assembly and a four-way valve, and belongs to the technical field of heating ventilation air conditioning system accessories. The main valve mainly comprises a main valve shell, the main valve shell is provided with an open pore D, an open pore E, an open pore S and an open pore C, the open pore E is provided with a vibration reduction flange E along the edge of a round hole, the vibration reduction flange E protrudes out of a surface body of the main valve shell and is integrally formed with the main valve shell, and a ventilation pipe E is fixedly connected with the vibration reduction flange E; the S hole is provided with an S vibration reduction flange which protrudes out of the surface body of the main valve shell and is integrally formed with the main valve shell along the edge of the round hole, and the S ventilation pipe is fixedly connected with the S vibration reduction flange; the open hole C is provided with a vibration reduction flange C which protrudes out of the surface body of the main valve shell and is integrally formed with the main valve shell along the edge of the round hole, and the ventilation pipe C is fixedly connected with the vibration reduction flange C. The utility model has strong vibration resistance, effectively solves the problem of gas leakage at the joint of the breather pipe and the main valve shell, has low structure improvement cost, is easy to manufacture and implement, has strong practicability, and can be widely applied to the technical field of heating ventilation air-conditioning system accessories.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating, ventilation and air conditioning system accessories. Specifically, it relates to a vibration-resistant four-way reversing valve assembly with strong vibration resistance, which effectively solves the problem of gas leakage at the connection between the vent pipe and the main valve housing, has low structural improvement cost, is easy to manufacture, and has strong practical performance, as well as a four-way valve using the vibration-resistant four-way reversing valve assembly. Background Art

[0002] A four-way valve is a crucial component in heating, ventilation, and air conditioning (HVAC) systems, especially in heat pump systems that require both cooling and heating functions. By changing the flow of refrigerant, it enables the system to switch between cooling and heating modes to adapt to different seasons or environmental requirements.

[0003] The vent pipe of the traditional four-way valve is directly welded to the opening of the main valve housing, and the welding strength is weak. The connection between the vent pipe and the main valve housing is prone to damage. In order to solve this technical problem, the patent application number is 2022107040593, and the invention name is a Chinese patent for stainless steel four-way valve and welding method. It discloses a stainless steel four-way valve, which mainly includes "main pipe, valve seat, auxiliary pipe and welding ring. The side wall of the main pipe has a connecting hole; a part of the valve seat is arranged in the main pipe, and the other part of the valve seat extends to the outside of the main pipe through the connecting hole. A connecting channel is opened on the valve seat that penetrates along the thickness direction; one end of the auxiliary pipe is inserted into the connecting channel, and there is an annular gap between the auxiliary pipe and the connecting channel, and the auxiliary pipe is connected to the main pipe; the welding ring is sleeved on the auxiliary pipe. During welding, a part of the welding ring melts and enters the annular gap; the auxiliary pipe The patent document discloses a secondary pipe, one end of which is inserted into the connecting passage, an annular gap being defined between the secondary pipe and the connecting passage, and the secondary pipe being in communication with the primary pipe; and a welding ring, which is sleeved over the secondary pipe and partially melts and enters the annular gap during welding. While this patent document does enhance the weld strength between the vent pipe and the main valve housing to a certain extent, its vibration resistance is relatively weak. During long-term operation, cracks are likely to form at the connection between the vent pipe and the main valve housing, leading to gas leakage. Furthermore, conventional solutions also suffer from relatively complex structural designs, difficulty in machining the internal valve seat, and a relatively complex welding process. Utility Model Content

[0004] The purpose of the utility model is to address the deficiencies in the existing technology and provide a vibration-resistant four-way reversing valve assembly with strong vibration resistance, which effectively solves the problem of gas leakage at the connection between the vent pipe and the main valve housing, has low structural improvement cost, is easy to manufacture, and has strong practical performance, as well as a four-way valve using the vibration-resistant four-way reversing valve assembly.

[0005] The utility model is realized through the following technical solutions:

[0006] A vibration-resistant four-way reversing valve assembly includes a main valve housing, wherein the upper end of the main valve housing is provided with a D opening for communicating with a D vent pipe, and the lower end surface of the main valve housing is provided with an E opening for communicating with an E vent pipe, an S opening for communicating with an S vent pipe, and a C opening for communicating with a C vent pipe, in sequence and at intervals. The characteristic is that: the E opening is provided with an E vibration-damping flange protruding from the main valve housing body and integrally formed with the main valve housing along the edge of the circular hole, the E vent pipe passes through the E vibration-damping flange and is fixedly connected to the E vibration-damping flange by welding;

[0007] The S opening is provided with an S vibration-damping flange along the edge of the circular hole, which protrudes from the main valve housing and is integrally formed with the main valve housing. The S vent pipe passes through the S vibration-damping flange and is fixedly connected to the S vibration-damping flange by welding.

[0008] The C opening is provided with a C vibration-damping flange along the edge of the circular hole, which protrudes from the main valve housing body and is integrally formed with the main valve housing. The C vent pipe passes through the C vibration-damping flange and is fixedly connected to the C vibration-damping flange by welding.

[0009] Preferably, the E vibration-damping flange, the S vibration-damping flange, and the C vibration-damping flange are all integrally formed with the main valve housing through a hole-drawing process.

[0010] Preferably, the area corresponding to the E vent tube and the inner ring of the E vibration-damping flange, the area corresponding to the S vent tube and the inner ring of the S vibration-damping flange, and the area corresponding to the C vent tube and the inner ring of the C vibration-damping flange are all flange vibration-damping surfaces; the flange vibration-damping surface further includes a solder filling surface and an interference contact surface, the solder filling surface and the inner ring of the vibration-damping flange are filled with a solder layer, the interference contact surface is provided with a friction-increasing convex pattern protruding from the surface of the vent tube and serving to enhance friction, and the friction-increasing convex pattern is interference fit with the inner ring of the vibration-damping flange.

[0011] Preferably, the friction-increasing convex pattern is integrally formed with the vent pipe; the cross section of the friction-increasing convex pattern is wavy, and the area between the trough section and the inner ring of the vibration-damping flange is filled with a solder layer.

[0012] Preferably, a valve seat is fixedly provided in the valve housing of the main valve, and three valve seat channels are opened on the valve seat, which are respectively connected to the D vent pipe, S vent pipe, and C vent pipe. The valve seat channel includes an accommodating channel for accommodating the vent pipe head and a limiting vent channel with a diameter smaller than the outer diameter of the vent pipe.

[0013] Preferably, the vent pipe head is not in direct contact with the bottom of the position-limiting vent channel, and the space between the vent pipe head and the bottom of the position-limiting vent channel is used to accommodate the original welding material; the space between the accommodating channel and the vent pipe surface is filled with a solder layer.

[0014] Preferably, the D opening is provided with a D vibration-damping flange along the edge of the circular hole, which protrudes from the main valve housing surface and is integrally formed with the main valve housing. The D vent pipe passes through the D vibration-damping flange and is fixedly connected to the D vibration-damping flange by welding.

[0015] Preferably, the area of the D vent pipe corresponding to the inner circle of the D vibration-damping flange is also the flange vibration-damping surface.

[0016] Preferably, the welding method between the E vent pipe and the E vibration-damping flange, the welding method between the S vent pipe and the S vibration-damping flange, the welding method between the C vent pipe and the C vibration-damping flange, and the welding method between the D vent pipe and the D vibration-damping flange are all brazing.

[0017] A four-way valve employs the above-mentioned vibration-resistant four-way reversing valve assembly.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. After the vent pipe of this utility model is welded to the main valve housing, the contact area not only covers the thickness of the main valve housing itself but also the inner ring of the entire vibration-damping flange. The area between the vent pipe body, the vibration-damping flange, and the inner wall of the main valve housing is filled with a layer of solder. This not only enhances the welding strength between the vent pipe and the main valve housing, but also effectively releases the vibration stress generated by the four-way valve during operation.

[0020] 2. In addition to relieving stress through the vibration-damping flange, the vent pipe of this utility model can also relieve stress through the valve seat. The space between the vent pipe and the inner wall of the accommodating channel of the valve seat is also filled with solder, which further enhances the welding strength of the vent pipe while relieving the vibration stress generated by the four-way valve during operation.

[0021] 3. The friction-increasing convex pattern of this utility model not only creates a certain assembly stress between the vent pipe and the main valve housing before welding, facilitating manufacturing; it also creates a small gap between the vibration-damping flange, valve seat, and the vent pipe, facilitating solder flow, thereby ensuring product stability and vibration resistance.

[0022] 4. The utility model has strong anti-vibration performance, effectively solves the problem of gas leakage at the connection between the vent pipe and the main valve housing, has low structural improvement cost, is easy to manufacture and implement, and has strong practicality, and can be widely used in the technical field of HVAC system accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 .

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 .

[0025] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0026] Figure 4 This utility model Figure 3 A partial enlarged view.

[0027] Figure 5 This utility model Figure 3 Enlarged view of point B in the middle.

[0028] Figure 6 It is a schematic structural diagram of the S-shaped vibration-damping flange of the utility model after partial section.

[0029] Figure 7 It is a schematic diagram of the structure of the ventilation pipe of the utility model when viewed from above.

[0030] In the figure: 1. Main valve housing; 11. E vibration-damping flange; 12. S vibration-damping flange; 13. C vibration-damping flange; 14. D vibration-damping flange; 2. D vent pipe; 3. S vent pipe; 4. E vent pipe; 5. C vent pipe; 52. Friction-increasing convex pattern; 6. Valve seat; 61. Valve seat channel; 611. Accommodating channel; 612. Limiting vent channel. DETAILED DESCRIPTION

[0031] In order to enable readers to better understand the design purpose of the present invention, the technical solution of the present invention is further described below in conjunction with the embodiments. It should be noted that the directional nouns that may be involved in the following paragraphs, including but not limited to "up, down, left, right, front, back", etc., are based on the visual directions shown in the corresponding drawings of the specification, and should not be regarded as limiting the scope of protection or technical solution of the present invention. Its purpose is only to facilitate those skilled in the art to better understand the technical solution created by the present invention.

[0032] In the description of this specification, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0033] Example 1

[0034] like Figures 1 to 5A vibration-resistant four-way reversing valve assembly includes a main valve housing 1. The upper end of the main valve housing 1 is provided with a D opening for connecting with the D vent pipe 2, and the lower end surface of the main valve housing 1 is sequentially spaced apart with an E opening for connecting with the E vent pipe 4, an S opening for connecting with the S vent pipe 3, and a C opening for connecting with the C vent pipe 5. The E opening is equipped with an E damping flange 11 along its circular edge, projecting from the main valve housing 1 and integrally formed with the housing. The E vent pipe 4 passes through this flange and is fixedly connected to it by welding. The S opening is equipped with an S damping flange 12 along its circular edge, projecting from the main valve housing 1 and integrally formed with the housing. The S vent pipe 3 passes through this flange and is fixedly connected to it by welding. The C opening is equipped with a C damping flange 13 along its circular edge, projecting from the main valve housing 1 and integrally formed with the housing. The C vent pipe 5 passes through this flange and is fixedly connected to it by welding. The E, S, and C damping flanges 11, 12, and 13 are all integrally formed with the main valve housing 1 through a hole-pulling process, making them easy to implement and low-cost.

[0035] In this embodiment, the E vent tube 4 is inserted through the E damping flange 11, the C vent tube 5 is inserted through the C damping flange 13, and the S vent tube 3 is inserted through the S damping flange 12. Once inserted into place, the products are brazed in a brazing furnace. After brazing, a layer of solder fills the gap between the vent tube surface and the corresponding damping flange inner ring. The so-called solder layer refers to the process in which the original welding material is transformed into liquid solder after heating, then flows to a specific area and solidifies into a solid state after cooling.

[0036] The four-way valve generates vibrations during operation. Over long periods of operation, the vibration stress can damage the connection between the vent pipe and the main valve housing, making the connection susceptible to fine cracks. After the vent pipe of this embodiment is welded to the main valve housing, the contact area extends beyond the thickness of the main valve housing itself and encompasses the entire inner ring of the vibration-damping flange. The area between the vent pipe body, the vibration-damping flange, and the inner wall of the main valve housing is filled with a solder filler layer. This not only enhances the weld strength between the vent pipe and the main valve housing, but also effectively releases the vibration stress generated during operation by the four-way valve, effectively resolving gas leakage at the connection between the vent pipe and the main valve housing. The improved structure is simple, cost-effective, easy to manufacture, and highly practical.

[0037] Example 2

[0038] Based on Example 1, this example continues to describe in detail the technical features involved and the functions and roles played by the technical features in the present utility model, so as to help technicians in this field fully understand the technical solution of the present utility model and reproduce it.

[0039] like Figures 1 to 5A vibration-resistant four-way reversing valve assembly includes a main valve housing 1. The upper end of the main valve housing 1 is provided with a D opening for connecting with the D vent pipe 2, and the lower end surface of the main valve housing 1 is sequentially spaced apart with an E opening for connecting with the E vent pipe 4, an S opening for connecting with the S vent pipe 3, and a C opening for connecting with the C vent pipe 5. The E opening is provided with an E vibration-damping flange 11 along the edge of the circular hole, which protrudes from the surface body of the main valve housing 1 and is integrally formed with the main valve housing 1. The E vent pipe 4 passes through the E vibration-damping flange 11 and is fixedly connected to the E vibration-damping flange 11 by welding; the S opening is provided with an S vibration-damping flange 12 along the edge of the circular hole, which protrudes from the surface body of the main valve housing 1 and is integrally formed with the main valve housing 1. The S vent pipe 3 passes through the S vibration-damping flange 12 and is fixedly connected to the S vibration-damping flange 12 by welding; the C opening is provided with a C vibration-damping flange 13 along the edge of the circular hole, which protrudes from the surface body of the main valve housing 1 and is integrally formed with the main valve housing 1. The C vent pipe 5 passes through the C vibration-damping flange 13 and is fixedly connected to the C vibration-damping flange 13 by welding.

[0040] like Figure 6-Figure 7 As shown, the area corresponding to the inner circle of the E vent tube 4 and the E vibration-damping flange 11, the area corresponding to the inner circle of the S vent tube 3 and the S vibration-damping flange 12, and the area corresponding to the inner circle of the C vent tube 5 and the C vibration-damping flange 13 are all flange vibration-damping surfaces; the so-called "corresponding area" refers to the positive projection area of the vibration-damping flange on the surface of the vent tube after the vent tube is inserted and assembled in place.

[0041] The flange's vibration-damping surface consists of a solder-filled surface and an interference fit surface. The space between the solder-filled surface and the inner ring of the vibration-damping flange is filled with solder. The interference fit surface features friction-enhancing ridges 52, which extend beyond the vent tube's surface and enhance friction. These ridges form an interference fit with the inner ring of the vibration-damping flange. This structural design ensures a certain degree of assembly stress between the vent tube and the main valve housing before welding, facilitating manufacturing. It also creates a small gap between the vibration-damping flange and the vent tube, as well as between the valve seat and the vent tube, facilitating solder flow and ensuring product stability and vibration resistance.

[0042] In this embodiment, the friction-enhancing ridges 52 are integrally formed with the vent pipe. The cross-section of the friction-enhancing ridges 52 is wavy, and the area between the troughs and the inner ring of the vibration-damping flange is filled with a layer of solder. This not only facilitates assembly, but also further enhances the connection strength and vibration resistance between the vent pipe and the main valve housing 1.

[0043] In this embodiment, a valve seat 6 is fixedly mounted within the main valve housing 1. Three valve seat channels 61 are defined within the valve seat 6, connecting to the D vent pipe 2, S vent pipe 3, and C vent pipe 5, respectively. These channels 61 include an accommodating channel 611 for accommodating the vent pipe heads and a position-limiting vent channel 612 with a diameter smaller than the outer diameter of the vent pipes. These position-limiting vent channels 612 serve as both a limiter and a guide for insertion, ensuring product consistency. The diameter of the accommodating channel 611 is comparable to the outer diameter of the vent pipes.

[0044] In this embodiment, the vent pipe head is not in direct contact with the bottom of the position-limiting vent channel 612. The space between the vent pipe head and the bottom of the position-limiting vent channel 612 is used to accommodate the original welding material; the space between the accommodating channel 611 and the surface of the vent pipe is filled with a solder layer. This detailed design facilitates actual production and manufacturing. The original welding material is pre-installed in the space between the vent pipe head and the bottom of the position-limiting vent channel 612. After entering the brazing furnace, the original welding material will melt into a liquid state and gradually flow through the gap between the vent pipe and the accommodating channel 611 to the gap between the vibration-damping flange and the vent pipe, as well as the gap between the valve seat 6 and the main valve housing 1, thereby achieving one-time efficient welding of the main valve housing 1, the valve seat 6 and the vent pipe.

[0045] In this embodiment, the D opening is equipped with a D-shaped vibration-damping flange 14 along its circular edge, projecting from the main valve housing 1 and integrally formed with the main valve housing 1. The D-shaped vent pipe 2 passes through this D-shaped vibration-damping flange 14 and is securely connected to it by welding. The area of the D-shaped vent pipe 2 corresponding to the inner rim of the D-shaped vibration-damping flange 14 also serves as the flange's vibration-damping surface. The structural design of the D-shaped vibration-damping flange 14 and other components provide the same advantages as other vent pipes.

[0046] In this embodiment, the welding method between the E vent pipe 4 and the E vibration-damping flange 11, the welding method between the S vent pipe 3 and the S vibration-damping flange 12, the welding method between the C vent pipe 5 and the C vibration-damping flange 13, and the welding method between the D vent pipe 2 and the D vibration-damping flange 14 are all brazing.

[0047] After the vent pipe of this embodiment is welded to the main valve housing, the contact area not only covers the wall thickness of the main valve housing itself but also the inner ring of the entire vibration-damping flange. The area between the vent pipe body, the vibration-damping flange, and the inner wall of the main valve housing is filled with a layer of solder. This not only enhances the welding strength between the vent pipe and the main valve housing, but also effectively releases the vibration stress generated by the four-way valve during operation.

[0048] In addition to relieving stress through the vibration-damping flange, the vent pipe of this embodiment can also relieve stress through the valve seat. The space between the vent pipe and the inner wall of the accommodating channel of the valve seat is also filled with solder, which further enhances the welding strength of the vent pipe while relieving the vibration stress generated by the four-way valve during operation.

[0049] The structural design of the friction-increasing convex pattern in this embodiment not only creates a certain assembly stress between the vent pipe and the main valve housing before welding, facilitating manufacturing; but also creates a small gap between the vibration-damping flange, valve seat, etc., and the vent pipe, facilitating solder flow, thereby ensuring the stability and vibration resistance of the product.

[0050] This embodiment effectively solves the problem of gas leakage at the connection between the vent pipe and the main valve housing. The cost of structural improvement is very low, the manufacturing and implementation are easy, and the practicality is strong. It can be widely used in the technical field of HVAC system accessories.

[0051] Example 3

[0052] This embodiment provides a four-way valve, which applies the vibration-resistant four-way reversing valve assembly described in Example 1 or Example 2.

[0053] In summary, the above are merely preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications in the shape, structure, features and spirit of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A vibration-resistant four-way reversing valve assembly, comprising a main valve housing (1), wherein the upper end of the main valve housing (1) is provided with a D opening for communicating with a D vent pipe (2), and the lower end surface of the main valve housing (1) is provided with an E opening for communicating with an E vent pipe (4), an S opening for communicating with an S vent pipe (3), and a C opening for communicating with a C vent pipe (5) in sequence and at intervals, wherein: The E opening is provided with an E vibration-damping flange (11) along the edge of the circular hole, which is protruding from the main valve housing (1) and is integrally formed with the main valve housing (1); the E vent pipe (4) passes through the E vibration-damping flange (11) and is fixedly connected to the E vibration-damping flange (11) by welding; The S opening is provided with an S vibration-damping flange (12) along the edge of the circular hole, which protrudes from the surface of the main valve housing (1) and is integrally formed with the main valve housing (1); the S vent pipe (3) passes through the S vibration-damping flange (12) and is fixedly connected to the S vibration-damping flange (12) by welding; The C opening is provided with a C vibration-damping flange (13) along the edge of the circular hole, which protrudes from the main valve housing (1) and is integrally formed with the main valve housing (1); the C vent pipe (5) passes through the C vibration-damping flange (13) and is fixedly connected to the C vibration-damping flange (13) by welding.

2. The vibration-resistant four-way reversing valve assembly according to claim 1, characterized in that: The E vibration-damping flange (11), the S vibration-damping flange (12), and the C vibration-damping flange (13) are all integrally formed with the main valve housing (1) through a hole-pulling process.

3. The vibration-resistant four-way reversing valve assembly according to claim 1 or 2, characterized in that: The area corresponding to the E vent tube (4) and the inner ring of the E vibration-damping flange (11), the area corresponding to the S vent tube (3) and the inner ring of the S vibration-damping flange (12), and the area corresponding to the C vent tube (5) and the inner ring of the C vibration-damping flange (13) are all flange vibration-damping surfaces; the flange vibration-damping surfaces further include a solder filling surface and an interference contact surface, the solder filling surface and the inner ring of the vibration-damping flange are filled with a solder layer, and the interference contact surface is provided with a friction-increasing convex pattern (52) protruding from the surface of the vent tube and having the effect of enhancing friction, and the friction-increasing convex pattern (52) is interference-fitted with the inner ring of the vibration-damping flange.

4. The vibration-resistant four-way reversing valve assembly according to claim 3, characterized in that: The friction-increasing convex pattern (52) is integrally formed with the vent pipe; the cross section of the friction-increasing convex pattern (52) is wavy, and the area between the trough section and the inner ring of the vibration-damping flange is filled with a solder layer.

5. The vibration-resistant four-way reversing valve assembly according to claim 1, characterized in that: A valve seat (6) is fixedly provided in the main valve housing (1), and three valve seat channels (61) are provided on the valve seat (6), which are respectively connected to the D vent pipe (2), the S vent pipe (3), and the C vent pipe (5). The valve seat channels (61) include an accommodating channel (611) for accommodating a vent pipe head and a position-limiting vent channel (612) having a diameter smaller than the outer diameter of the vent pipe.

6. The vibration-resistant four-way reversing valve assembly according to claim 5, characterized in that: The vent pipe head is not in direct contact with the bottom of the position-limiting vent channel (612); the space between the vent pipe head and the bottom of the position-limiting vent channel (612) is used to accommodate the original welding material; the space between the accommodating channel (611) and the vent pipe surface is filled with a solder layer.

7. The vibration-resistant four-way reversing valve assembly according to claim 1, characterized in that: The D opening is provided with a D vibration-damping flange (14) along the edge of the circular hole, which protrudes from the surface of the main valve housing (1) and is integrally formed with the main valve housing (1); the D vent pipe (2) passes through the D vibration-damping flange (14) and is fixedly connected to the D vibration-damping flange (14) by welding.

8. The vibration-resistant four-way reversing valve assembly according to claim 7, characterized in that: The area of the D vent pipe (2) corresponding to the inner circle of the D vibration-damping flange (14) is also a flange vibration-damping surface.

9. The vibration-resistant four-way reversing valve assembly according to claim 7, characterized in that: The welding method between the E vent pipe (4) and the E vibration-damping flange (11), the welding method between the S vent pipe (3) and the S vibration-damping flange (12), the welding method between the C vent pipe (5) and the C vibration-damping flange (13), and the welding method between the D vent pipe (2) and the D vibration-damping flange (14) are all brazing.

10. A four-way valve, characterized in that: The four-way valve applies the vibration-resistant four-way reversing valve assembly described in any one of claims 1 to 9.

Images