Valve device

Abstract

This application relates to a valve device, including a first valve assembly, a second valve assembly, and a bracket. The first valve assembly includes a main valve body and a main valve seat. A mounting hole for mounting the main valve seat is formed on the side wall of the main valve body, extending axially along the main valve body. The second valve assembly is located beside the main valve body. The bracket includes an extension extending circumferentially along the main valve body. The extension includes a first end, a connecting section, and a second end sequentially connected along its extension direction. The first end is connected to the second valve assembly via a connector, and at least a portion of the connector or the first end is connected to the outer side wall of the main valve body. The connecting section crosses the mounting hole and is connected to the outer side wall of the main valve body via the second end. Thus, the extension prevents deformation of the mounting hole, thereby avoiding leakage between the main valve body and the main valve seat.

Description

Technical Field

[0001] This application relates to the technical field of refrigeration equipment, and in particular to a valve device. Background Technology

[0002] Existing valve devices, such as four-way directional valves, generally include a main valve component and a pilot valve component, or a main valve component, a drive valve component, and a pilot valve component. The connection between the main valve component and the pilot valve component, or the connection between the main valve component, the drive valve component, and the pilot valve component, is achieved through a bracket assembly.

[0003] The existing four-way directional valve main valve component mainly consists of a main valve body and a main valve seat. The main valve body is provided with a mounting hole that penetrates the side wall of the main valve body and extends axially. The mounting hole of the main valve body is used for welding connection with the main valve seat.

[0004] However, this structure has certain limitations. Especially under long-term use and high pressure differential, the sidewall at the middle of the mounting hole in the length direction of the main valve body may deform outward, causing a gap between the main valve body and the main valve seat, which in turn causes leakage between the main valve body and the main valve seat. Utility Model Content

[0005] Therefore, it is necessary to provide a valve device that can improve sealing performance.

[0006] A valve device, comprising:

[0007] The first valve assembly includes a main valve body and a main valve seat. The main valve body has a mounting hole on its side wall for mounting the main valve seat, and the mounting hole extends along the axial direction of the main valve body.

[0008] The second valve assembly is located beside the main valve body;

[0009] The bracket includes an extension extending circumferentially along the main valve body. The extension includes a first end, a connecting segment, and a second end connected sequentially along its extension direction. The first end is connected to the second valve assembly via a connector, and at least a portion of the connector or the first end is connected to the outer wall of the main valve body. The connecting segment crosses the mounting hole and is connected to the outer wall of the main valve body via the second end.

[0010] In one embodiment, there are at least two extensions, which are spaced apart along the axial direction of the main valve body. The connector includes a first connecting portion extending along the axial direction of the main valve body, and the first ends of the extensions are all connected to the same side of the first connecting portion.

[0011] In one embodiment, the second valve assembly is arranged side by side with the main valve body, and the connector is located beside the mounting hole; the connector further includes a second connecting portion that extends axially along the main valve body, and both sides of the second connecting portion are respectively connected to the first connecting portion and the second valve assembly.

[0012] In one embodiment, at least a portion of the inner wall of the first connecting part is attached to the outer peripheral wall of the main valve body and is fixedly connected together by welding; and / or, the first end is attached to the outer side wall of the main valve body and is fixedly connected together by welding.

[0013] In one embodiment, the main valve body has a valve cavity communicating with the mounting hole, at least a portion of the main valve seat is located within the valve cavity, and the connecting section is fixedly connected to the main valve seat.

[0014] In one embodiment, the main valve seat is located inside the valve cavity, and the connecting section has a protrusion that abuts against the outer wall surface of the main valve seat.

[0015] In one embodiment, the connecting section is provided with the protrusions on both sides along the axial direction of the main valve body.

[0016] In one embodiment, the main valve body has a valve cavity communicating with the mounting hole, at least a portion of the main valve seat is located in the valve cavity, a boss is provided on the outer wall surface of the main valve seat, a connecting pipe hole is provided on the boss, the extension is located beside the connecting pipe hole, the boss is embedded in the mounting hole, and the connecting section is attached to the outer wall surface of the boss.

[0017] In one embodiment, the arc surface of the outer peripheral wall of the boss is connected to the arc surface of the outer peripheral wall of the main valve body to form a complete arc surface.

[0018] In one embodiment, the valve device is a four-way valve, and the second valve assembly is a pilot valve;

[0019] And / or, the second valve assembly includes a drive valve and a pilot valve, the first valve assembly and the second valve assembly are arranged sequentially along a first direction, along the first direction, the drive valve is disposed between the first valve assembly and the pilot valve, and the main valve body is connected to the drive valve through the connector.

[0020] Compared with the prior art, the valve device provided in this application connects the main valve body of the first valve assembly and the second valve assembly through the connector and extension of the bracket. In this way, since it is not necessary to connect the first end of the connector and the extension to the main valve body separately, the welding steps of the bracket on the main valve body are reduced, the welding cost is reduced, and when the connector and the extension are set as one piece, the connection strength between the entire bracket, the first valve assembly and the second valve assembly can be improved, the deformation of the main valve body is avoided and the connection stability between the main valve body and the second valve assembly is improved.

[0021] This application further enhances the valve by extending the connecting section of the extension across the mounting hole, thus fixing the spacing of the mounting holes along the circumference of the main valve body. Therefore, when the main valve body is under pressure, the bracket reduces the plastic deformation of the outer wall of the main valve body located beside the mounting hole under pressure, ensuring that the original geometry and dimensions of the main valve body remain unchanged, improving its pressure resistance and mechanical strength, and enhancing its long-term stability and durability. Simultaneously, the bracket optimizes the stress distribution on the sidewall of the main valve body, reducing stress concentration and lowering the risk of localized deformation under high pressure. This prevents gaps between the main valve body and the main valve seat, avoiding leakage and improving the sealing effect of the valve device. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology 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.

[0023] Figure 1 This is a schematic diagram of the assembly of the first valve assembly and the bracket in one embodiment of this application;

[0024] Figure 2 This is a schematic diagram of a bracket in one embodiment of this application;

[0025] Figure 3 This is a schematic diagram of the bracket in another embodiment of this application;

[0026] Figure 4 This is a schematic diagram of a valve device in one embodiment of this application;

[0027] Figure 5 for Figure 4 Cross-sectional view after removing the second valve assembly at point A in the middle;

[0028] Figure 6 for Figure 4 A schematic diagram of the main valve seat;

[0029] Figure 7 for Figure 4 A schematic diagram of the midline support;

[0030] Figure 8 This is a schematic diagram of the assembly of the first valve assembly and the bracket in one embodiment of this application;

[0031] Figure 9 for Figure 8 Cross-sectional view at point A in the middle;

[0032] Figure 10 for Figure 8 A schematic diagram of the main valve seat;

[0033] Figure 11 This is a schematic diagram of a valve device in another embodiment of this application;

[0034] Figure 12 for Figure 11 A schematic diagram of the valve device from another perspective.

[0035] Reference numerals: 1. Valve device; 10. First valve assembly; 11. Main valve body; 101. Mounting hole; 102. Valve chamber; 12. Main valve seat; 121. Pipe hole; 122. Boss; 13. First pipe; 14. Second pipe; 20. Second valve assembly; 21. Pilot valve; 22. Drive valve; 30. Bracket; 301. First end; 302. Connecting section; 303. Second end; 31. Extension; 311. Protrusion; 32. Connector; 321. First connecting part; 322. Second connecting part. Detailed Implementation

[0036] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0037] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0041] Please see Figures 1 to 12 This application provides a valve device 1, including a first valve assembly 10 and a second valve assembly 20. The first valve assembly 10 includes a main valve body 11 and a main valve seat 12. A mounting hole 101 for mounting the main valve seat 12 is provided on the side wall of the main valve body 11, and the mounting hole 101 extends axially along the main valve body 11. The second valve assembly 20 is located beside the main valve body 11. The valve device 1 also includes a bracket 30, which includes an extension 31 extending circumferentially along the main valve body 11. The extension 31 includes a first end 301, a connecting section 302, and a second end 303 connected sequentially along its extension direction. The first end 301 of the extension 31 is connected to the second valve assembly 20 through a connector 32, and at least part of the connector 32 or the first end 301 is connected to the outer side wall of the main valve body 11. The connecting section 302 of the extension 31 crosses the mounting hole 101 and is connected to the outer side wall of the main valve body 11 through the second end 303. It should be noted that the first end 301 and the second end 303 of the extension 31 refer to the ends of the extension 31 that are arranged opposite to each other along the circumference of the main valve body 11. That is, the first end 301 and the second end 303 are respectively located on both sides of the connecting section 302 that are arranged opposite to each other along the circumference of the main valve body 11.

[0042] It is understood that, in this embodiment, referring to Figure 4 The main valve body 11 of the first valve assembly 10 and the second valve assembly 20 are connected by the connector 32 and the extension 31 of the bracket 30. This eliminates the need to connect the first ends 301 of the connector 32 and the extension 31 to the main valve body 11 separately, thus reducing the welding steps on the main valve body 11 and lowering welding costs. Furthermore, the connector 32 and the extension 31 are integrally formed, thereby improving the connection strength between the entire bracket 30, the first valve assembly 10, and the second valve assembly 20, preventing deformation of the main valve body 11, and improving the connection stability between the main valve body 11 and the second valve assembly 20.

[0043] This embodiment further extends the extension 31 by extending the connecting section 302 across the mounting hole 101, thus fixing the spacing of the mounting hole 101 along the circumference of the main valve body 11. Therefore, when the main valve body 11 is under pressure, the bracket 30 reduces the plastic deformation of the outer wall of the main valve body 11 located beside the mounting hole 101 under pressure, ensuring that the original geometry and dimensions of the main valve body 11 remain unchanged, improving its pressure resistance and mechanical strength, and enhancing its long-term stability and durability. Simultaneously, the bracket 30 optimizes the stress distribution on the sidewall of the main valve body 11, reducing stress concentration and lowering the risk of localized deformation of the sidewall under high pressure. This prevents gaps between the main valve body 11 and the main valve seat 12, avoiding leakage and improving the sealing effect of the valve device 1.

[0044] Preferably, see Figure 1 The extension 31 covers at least the middle portion of the mounting hole 101 along the extension direction of the main valve body 11. The middle portion refers to the central area of ​​the mounting hole 101 along the extension direction of the main valve body 11, not just the exact center of the mounting hole 101. Since the central portion of the mounting hole 101 is the area of ​​most significant stress concentration, this arrangement allows the extension 31 to specifically enhance the structural strength and rigidity of this area, effectively preventing deformation of the main valve body 11 in this region.

[0045] Furthermore, the main valve body 11 has a valve cavity 102 communicating with the mounting hole 101, and at least a portion of the main valve seat 12 is located within the valve cavity 102. (See also...) Figure 2 and Figure 3 The extension portion 31 has a strip-shaped structure and extends circumferentially along the main valve body 11. (See reference...) Figure 6The main valve seat 12 is provided with a connecting pipe hole 121, and the connecting section 302 of the extension 31 is located beside the connecting pipe hole 121. When there are at least two connecting pipe holes 121, and they are arranged sequentially at intervals along the axial direction of the main valve body 11, the extension 31 is located between two adjacent connecting pipe holes 121, that is, the connecting section 302 of the extension 31 is located within the interval between the edges of the two connecting pipe holes 121, and does not coincide with the projection of the connecting pipe hole 121. The strip-shaped design can be used to set the extension 31 according to the specific deformable positions on both sides of the mounting hole 101, which improves the flexibility and specificity of the connection between the extension 31 and the main valve body 11, and at the same time uses less material, reducing the production cost of the extension 31.

[0046] In one embodiment, the first end 301 of the extension 31 is connected to the outer wall of the main valve body 11. Schematic, the connector can be located on the side of the first end 301 away from the main valve body 11, i.e., the connector, the first end 301, and the main valve body 11 are arranged sequentially along the radial direction of the main valve body 11. Thus, only the first end 301 and the main valve body 11 need to be connected, thereby improving the connection efficiency between the main valve body 11 and the bracket 30. The connector can also be connected to the first end 301 along the circumference of the main valve body 11. In this case, the connector and the connecting section 302 are respectively connected to the two sides of the first end 301 arranged opposite each other along the circumferential direction of the main valve body 11. That is, at least a portion of the connector 32 and the first end 301 are connected to the outer wall of the main valve body 11. This increases the contact area between the bracket 30 and the main valve body 11, thereby improving the connection strength between the bracket 30 and the main valve body 11.

[0047] In one embodiment, at least part of the connector 32 is connected to the outer side wall of the main valve body 11. In this way, the connection area between the bracket 30 and the main valve body 11 can be increased by increasing the contact area between the connector 32 and the main valve body 11, thereby improving the connection strength between the bracket 30 and the main valve body 11.

[0048] In one embodiment, the first end 301 and the second end 303 of the extension 31 are both attached to the outer wall of the main valve body 11. That is, the inner wall surfaces of the first end 301 and the second end 303 are attached to the outer wall located next to the mounting hole 101. This increases the contact area between the extension 31 and the outer wall of the main valve body 11, thereby dispersing the stress on the extension 31. Figure 4 and Figure 5As shown, the inner wall of the extension portion 31 facing the main valve body 11 is arc-shaped, while the main valve body 11 is cylindrical. In other words, the arc-shaped inner wall of the extension portion 31 allows for a tighter fit with the outer wall of the main valve body 11, reducing the gap between the extension portion 31 and the outer wall of the main valve body 11 and increasing the contact area between them. This not only facilitates the connection between the extension portion 31 and the outer wall of the main valve body 11, improving the stability of their subsequent connection, but also reduces the deformation space of the extension portion 31 and the main valve body 11, making both the main valve body 11 and the extension portion 31 less prone to deformation, thus improving the integration and stability of the main valve component.

[0049] Furthermore, the extension 31 and the outer wall of the main valve body 11 are fixedly connected together by welding to increase the contact area between the extension 31 and the outer wall of the main valve body 11, and to ensure a stable connection between the extension 31 and the main valve body 11. Specifically, the welding process is either continuous welding or spot welding. Continuous welding provides higher sealing performance and connection strength, while spot welding can meet the needs of weight reduction or simplified processing, reducing material consumption and processing difficulty while ensuring basic connection strength. Different welding processes can be selected according to customer needs or actual working conditions. Welding methods can include laser welding, argon arc welding, fusion welding, or wire feeding welding.

[0050] In one embodiment, the extension may extend from either side of the connector 32 toward the mounting hole 101. See [link / reference] Figure 3 The central angle of the inner wall of the extension can be greater than 180 degrees or less than 180 degrees, such as... Figure 2 As shown, as long as the extension 31 can cover the mounting hole 101, this embodiment does not restrict the central angle of the inner wall surface of the extension 31.

[0051] In one embodiment, there are at least two extensions 31, spaced apart along the axial direction of the main valve body 11. The connector 32 includes a first connecting portion 321 extending along the axial direction of the main valve body 11, and the first ends 301 of the extensions 31 are all connected to the same side of the first connecting portion 321. It is understood that under high pressure, deformation may occur at different locations along the entire axial direction of the main valve body 11, especially in the area where the mounting hole 101 is located. This embodiment provides at least two spaced extensions 31 along the axial direction of the main valve body 11. These extensions 31 can simultaneously reinforce and protect the mounting hole 101, distributing the pressure on the outer wall beside the mounting hole 101 to the multiple extensions 31, thereby greatly enhancing the overall rigidity and stability of the main valve body 11 along its entire axial length. Moreover, since multiple extensions 31 are connected to the same side of the first connecting portion 321, the first connecting portion 321 can integrate, transfer, and disperse the stress on the multiple extensions 31 to other connected parts of the second valve assembly 20 and the main valve body 11, that is, disperse it to multiple larger areas, significantly reducing the stress peak on the extensions, thereby more effectively reducing the risk of local deformation of the sidewall of the main valve body 11 under high pressure.

[0052] Furthermore, at least a portion of the inner wall of the first connecting part 321 is attached to the outer peripheral wall of the main valve body 11 and fixedly connected together by welding. In this way, the first connecting part 321 and the surface of the main valve body 11 form a better fit, and the relative position between the first connecting part 321 and the main valve body 11 is more fixed, making it less prone to misalignment during welding and installation. This facilitates welding between the first connecting part 321 and the main valve body 11, preventing the main valve body 11 from shaking or moving and affecting the structural stability of the valve device. The welding connection method also ensures a stable connection between the first connecting part 321 and the main valve body 11. Regarding the selection of specific welding processes, please refer to the above content; that is, different welding processes can be selected according to customer needs or actual working conditions. This embodiment will not elaborate further here.

[0053] In one embodiment, see Figure 4 and Figure 11 The second valve assembly 20 is arranged side by side with the main valve body 11, and the connector 32 is located beside the mounting hole 101. The connector 32 also includes a second connecting portion 322, which extends axially along the main valve body 11, and its two sides are respectively connected to the first connecting portion 321 and the second valve assembly 20. Thus, the second connecting portion 322 facilitates the connection between the first valve assembly 10 and the second valve assembly 20, and the connector 32 provides a certain degree of support for both the first valve assembly 10 and the second valve assembly 20.

[0054] In one embodiment, the main valve body 11 has a valve cavity 102 communicating with the mounting hole 101, and at least a portion of the main valve seat 12 is located within the valve cavity 102. The connecting section 302 is fixedly connected to the main valve seat 12. Thus, the first end 301, the connecting section 302, and the second end 303 of the extension 31 are all connected to the first valve assembly 10. That is, different areas on the extension 31 are connected to the main valve body 11 or the main valve seat 12, thereby increasing the stability of the fit between the extension 31 and the sidewalls of the main valve body 11 on both sides of the extension direction of the mounting hole 101, and further enhancing the support and pre-tightening effect of the main valve seat 12.

[0055] Schematic illustration: The main valve body 11 also includes a first connecting pipe 13 and multiple second connecting pipes 14. The first connecting pipe 13 and the second connecting pipes 14 are respectively disposed on both sides of the main valve body 11 along its axial direction. The multiple second connecting pipes 14 correspond one-to-one with the connecting pipe holes 121 on the main valve seat 12 and are inserted into the connecting pipe holes 121. The first connecting pipe 13 and the multiple second connecting pipes 14 are connected through the valve cavity 102 to allow fluid to flow within the valve device 1. Figure 11 and Figure 12 In the illustrated embodiment, the main valve seat 12 is provided with three connecting pipe holes 121, and there is a gap between adjacent connecting pipe holes 121. In this case, there are two extensions 31, which are respectively provided in the gap between the main valve seat 12. In other embodiments, the number of connecting pipe holes 121 can also be other numbers, and the number of extensions 31 can also be adjusted accordingly based on the number of connecting pipe holes 121.

[0056] In one embodiment, see Figure 5 The main valve seat 12 is located within the valve cavity 102, and the connecting section 302 has a protrusion 311 that abuts against the outer wall surface of the main valve seat 12. It is understood that when the outer surface of the main valve seat 12 is welded to the main valve body 11, the outer surface of the main valve seat 12 is recessed below the mounting hole 101, meaning the main valve seat 12 is completely located inside the valve cavity 102 of the main valve body 11. At this time, when the first end 301 and the second end 303 of the extension 31 are located on the outer wall of the main valve body 11, there is a gap radially between the outer surface of the main valve seat 12 and the inner wall of the connecting section 302 on the extension 31. In this embodiment, the protrusion 311 on the extension 31 can extend into the mounting hole 101 to fill the gap and abut against the outer surface of the main valve seat 12, thereby increasing the contact area between the extension 31 and the main valve seat 12 and ensuring a stable connection between the extension 31 and the first valve assembly 10.

[0057] For illustrative purposes only, see below. Figure 4 and Figure 5Along the radial direction of the main valve body 11, a protrusion 311 is disposed between the inner sidewall of the connecting section 302 of the extension 31 and the main valve seat 12. In other embodiments, the protrusion 311 may also be disposed on the side of the extension 31 along the axial direction of the main valve body 11 and extend towards the main valve seat 12. In this way, the provision of the protrusion 311 can distribute the load on the extension 31, help the extension 31 resist local bending and torsional forces, improve the structural strength of the extension 31, and reduce the risk of damage or breakage of the extension 31. This embodiment does not limit this, as long as the protrusion 311 can abut against the surface of the main valve seat 12. It should also be noted that when the protrusion 311 is connected to the main valve seat 12 by welding, a certain gap may be left between the inner wall surface of the protrusion 311 and the surface of the main valve seat 12 for filling with solder. After welding, the protrusion 311 and the main valve seat 12 abut against each other through solder.

[0058] Indicatively, the protrusion 311 can be a continuous strip or multiple spaced protrusions or dots.

[0059] In one embodiment, see Figure 7 The connecting section 302 has protrusions 311 on both sides along the axial direction of the main valve body 11. In this way, both sides of the extension 31 along the axial direction of the main valve body 11 are connected to the main valve seat 12 through the protrusions 311, which further improves the structural strength of the extension 31. At the same time, it makes the contact between the extension 31 and the first valve assembly 10 more symmetrical, so that the force on both can be distributed more evenly.

[0060] In one embodiment, see Figure 8 , Figure 9 and Figure 10 A boss 122 protrudes from the outer wall of the main valve seat 12, and a connecting pipe hole 121 is formed on the boss 122. An extension 31 is located beside the connecting pipe hole 121. The boss 122 is embedded in the mounting hole 101, and the connecting section 302 of the extension 31 is attached to the outer wall of the boss 122. In this way, the main valve seat 12 can complete the axial and circumferential positioning between itself and the main valve body 11 through the boss 122. At the same time, due to the setting of the boss 122 structure on the main valve seat 12, the depth of the connecting pipe hole 121 is effectively increased, improving the connection reliability between the main valve seat 12 and the connecting pipe inserted into the connecting pipe hole 121. In addition, compared with the main valve seat 12 without the boss 122 structure, the boss 122 in this embodiment increases the height of the main valve seat 12 (height here refers to the distance of the main valve seat 12 along the radial direction of the main valve body 11), increases the cross-sectional area of ​​the main valve seat 12, and can improve the strength of the main valve seat 12.

[0061] In a preferred embodiment, the boss 122 is interference-fitted with the mounting hole 101. It is understood that the outer periphery of the boss 122 is slightly larger than the size of the mounting hole 101, requiring a certain amount of pressure during assembly to press the boss 122 into the mounting hole 101. Thus, once the boss 122 and mounting hole 101 are assembled, due to the elastic deformation of the material, a large radial pressure and frictional force will be generated between the outer periphery of the mating boss 122 and the wall of the mounting hole 101. This not only prevents the main valve seat 12 from axially moving or rotating circumferentially during operation, but also provides the main valve seat 12 and main valve body 11 with extremely strong vibration resistance and anti-loosening capabilities, ensuring the stability of the connection between the main valve seat 12 and the main valve body 11, since the valve device 1 is typically subjected to fluid pressure, temperature changes, and vibration.

[0062] In another preferred embodiment, the boss 122 is clearance-fitted with the mounting hole 101 to facilitate embedding the boss 122 into the mounting hole 101. Furthermore, when the boss 122 and the mounting hole 101 are connected by welding, solder can be filled into the gap. After welding, the total connection area between the main valve seat 12 and the main valve body 11 is increased because the outer peripheral wall of the boss 122 and the hole wall of the mounting hole 101 are interconnected, thereby improving the connection strength between the main valve body 11 and the main valve seat 12.

[0063] In one embodiment, the arc surface of the outer peripheral wall of the boss 122 connects with the arc surface of the outer peripheral wall of the main valve body 11 to form a complete arc surface. This not only avoids interference with surrounding equipment and facilitates installation and maintenance, but also prevents dust from accumulating in the mounting hole 101, thus preventing bacterial growth in the valve device 1, making it easier to clean and reducing clogging.

[0064] In one embodiment, valve device 1 is a four-way valve, and specifically a single-stage driven four-way valve; in this case, the second valve assembly 20 is a pilot valve 21. In another embodiment, see [reference needed]. Figure 11 and Figure 12 Valve device 1 is a two-stage driven four-way valve. In this case, the second valve assembly 20 includes a drive valve 22 and a pilot valve 21. The first valve assembly 10 and the second valve assembly 20 are arranged sequentially along the first direction X. Along the first direction, the drive valve 22 is located between the main valve body 11 of the first valve assembly 10 and the pilot valve 21. The main valve body 11 is connected to the drive valve 22 via a connector 32. This improves the versatility of the bracket 30 in this embodiment. It should be noted that the first direction is perpendicular to the axial direction of the main valve body 11.

[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A valve device, characterized by include: The first valve assembly (10) includes a main valve body (11) and a main valve seat (12). The main valve body (11) has a mounting hole (101) for mounting the main valve seat (12) on its side wall. The mounting hole (101) extends along the axial direction of the main valve body (11). The second valve assembly (20) is located beside the main valve body (11); The bracket (30) includes an extension (31) extending circumferentially along the main valve body (11). The extension (31) includes a first end (301), a connecting segment (302), and a second end (303) connected sequentially along its extension direction. The first end (301) is connected to the second valve assembly (20) via a connector (32), and at least part of the connector (32) or the first end (301) is connected to the outer side wall of the main valve body (11). The connecting segment (302) crosses the mounting hole (101) and is connected to the outer side wall of the main valve body (11) via the second end (303).

2. The valve device according to claim 1, characterized in that There are at least two extensions (31) and they are arranged at intervals along the axial direction of the main valve body (11). The connector (32) includes a first connecting portion (321) extending along the axial direction of the main valve body (11). The first ends (301) of the extensions (31) are all connected to the same side of the first connecting portion (321).

3. The valve device of claim 2, wherein The second valve assembly (20) is arranged side by side with the main valve body (11), and the connector (32) is located beside the mounting hole (101); the connector (32) also includes a second connecting part (322), which extends along the axial direction of the main valve body (11), and the two sides of the second connecting part (322) are respectively connected to the first connecting part (321) and the second valve assembly (20).

4. The valve device of claim 2, wherein At least a portion of the inner wall of the first connecting part (321) is attached to the outer peripheral wall of the main valve body (11) and is fixedly connected together by welding; And / or, the first end (301) is attached to the outer side wall of the main valve body (11) and is fixedly connected together by welding.

5. Valve device according to any one of claims 1 to 4, characterized in that The main valve body (11) has a valve cavity (102) communicating with the mounting hole (101), at least part of the main valve seat (12) is located in the valve cavity (102), and the connecting section (302) is fixedly connected to the main valve seat (12).

6. The valve device of claim 5, wherein The main valve seat (12) is located inside the valve cavity (102), and the connecting section (302) is provided with a protrusion (311) that abuts against the outer wall surface of the main valve seat (12).

7. The valve device of claim 6, wherein The connecting section (302) has protrusions (311) on both sides along the axial direction of the main valve body (11).

8. The valve device of claim 1, wherein The main valve body (11) has a valve cavity (102) communicating with the mounting hole (101). At least part of the main valve seat (12) is located in the valve cavity (102). A boss (122) is provided on the outer wall surface of the main valve seat (12). A pipe hole (121) is provided on the boss (122). The extension (31) is located beside the pipe hole (121). The boss (122) is embedded in the mounting hole (101). The connecting section (302) is attached to the outer wall surface of the boss (122).

9. The valve device of claim 8, wherein The outer peripheral wall of the boss (122) is connected to the outer peripheral wall of the main valve body (11) to form a complete arc surface.

10. The valve device according to any one of claims 1 to 4, 6 to 9, characterized in that, The valve device (1) is a four-way valve, and the second valve assembly (20) is a pilot valve (21). And / or, the second valve assembly (20) includes a drive valve (22) and a pilot valve (21), the first valve assembly (10) and the second valve assembly (20) are arranged sequentially along a first direction, along the first direction, the drive valve (22) is disposed between the first valve assembly (10) and the pilot valve (21), and the main valve body (11) is connected to the drive valve (22) through the connector (32).

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