Valve structure

Abstract

The valve structure comprises a valve seat and a connecting pipe, the valve seat is provided with a connecting channel, an opening in one end of the connecting channel is formed in the outer surface of the valve seat to form a connector, the connecting end of the connecting pipe penetrates through the connector to be inserted into the connecting channel, and a gap exists between the connecting end and the connecting channel; wherein the valve seat is connected with the connecting pipe in a welding mode, the welding position is located at the connector and the gap, the welding position is provided with welding marks formed by welding flux, the welding marks comprise the first welding mark and the second welding mark, the first welding mark is located at the gap, and the second welding mark is annular and located between the area, adjacent to the connector, of the outer surface of the valve seat and the area, adjacent to the connector, of the outer surface of the connecting pipe.

Description

Technical Field

[0001] The utility model relates to a valve structure. Background Art

[0002] The existing valve structure, such as the stop valve, usually adopts the design of the valve seat with an embedded welding ring. Because the square valve structure adopted by the stop valve, for example, limits the melting depth of the welding ring, the effective welding depth between the pipe and the valve seat is small, thereby reducing the welding strength between the pipe and the valve seat. In this regard, in some existing solutions, in order to enhance the welding strength between the pipe and the valve seat, the overall width of the valve seat is widened to increase the welding depth. However, this design will increase the cost of the valve body material and is not conducive to the miniaturization design of the valve structure. Utility Model Content

[0003] A main purpose of the utility model is to overcome at least one defect of the prior art and provide a valve structure with a larger welding depth between a connecting pipe and a valve seat and a lower material cost.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] According to one aspect of the utility model, a valve structure is provided, which includes a valve seat and a connecting pipe, the valve seat is provided with a connecting channel, one end of the connecting channel is open to the outer surface of the valve seat to form an interface, the connecting end of the connecting pipe passes through the interface and is inserted into the connecting channel, and there is a gap between the connecting end and the connecting channel; wherein the valve seat is welded to the connecting pipe, and the welding position is located at the interface and the gap, the welding position has a weld mark formed by solder, the weld mark includes a first weld mark and a second weld mark, the first weld mark is located in the gap, and the second weld mark is annular and is located between an area of ​​the outer surface of the valve seat adjacent to the interface and an area of ​​the outer surface of the connecting pipe adjacent to the interface.

[0006] According to one embodiment of the present invention, along the radial direction of the connecting channel, the width of the gap is 0.05 mm to 0.2 mm.

[0007] According to one embodiment of the present invention, a positioning protrusion is protruding from the outer surface of the connecting end of the connecting pipe, and the positioning protrusion abuts against the inner surface of the connecting channel.

[0008] According to one embodiment of the present utility model, there are at least two positioning protrusions, and at least two positioning protrusions are arranged at intervals along the circumference of the connecting pipe.

[0009] According to one of the embodiments of the utility model, wherein: a first reference plane parallel to the axial direction of the connecting pipe and parallel to the protruding direction of the positioning protrusion is defined, and the first reference plane is used as the cutting surface, and the cross-sectional shape of the positioning protrusion is a circular arc or an elliptical arc; and / or, a second reference plane parallel to the axial direction of the connecting pipe and perpendicular to the protruding direction of the positioning protrusion is defined, and the second reference plane is used as the cutting surface, and the cross-sectional shape of the positioning protrusion is a circle or an ellipse.

[0010] According to one embodiment of the present invention, the positioning protrusion is formed by the connecting pipe through an integral molding process, and a depression is formed on the inner surface of the connecting pipe corresponding to the position of the positioning protrusion.

[0011] According to one embodiment of the present utility model, the material of the valve seat is aluminum, and the material of the connecting pipe is aluminum.

[0012] According to one embodiment of the present utility model, the valve structure also includes a welding ring sleeve, which is arranged on the outer periphery of the connecting pipe, and the welding ring sleeve, the valve seat and the connecting pipe together form a accommodating space, and the solder is accommodated in the accommodating space to form the first welding mark and the second welding mark.

[0013] According to one embodiment of the present invention, along the axial direction of the connecting pipe, the welding ring sleeve has a first ring portion and a second ring portion connected along the axial direction, the first ring portion is sleeved on the outer circumference of the connecting pipe, the inner diameter of the second ring portion is larger than the outer diameter of the connecting pipe, the second ring portion has opposite first and second ends, the first end is connected to the first ring portion, and the second end is connected to the valve seat.

[0014] According to one of the embodiments of the utility model, wherein: the welding ring sleeve also has a transition connection portion, the transition connection portion is connected between the first end of the first ring portion and the second ring portion, and the cross-section of the transition connection portion is arc-shaped; and / or, the outer surface of the valve seat is provided with an annular groove, the groove is arranged around the interface, and the second end of the second ring portion is inserted into the groove.

[0015] It can be seen from the above technical solution that the advantages and positive effects of the valve structure proposed by the utility model are:

[0016] The valve structure proposed in the utility model includes a valve seat and a pipe, the valve seat is provided with a connecting channel, one end of the connecting channel is opened on the outer surface of the valve seat to form an interface, the connecting end of the pipe passes through the interface and is inserted into the connecting channel, and there is a gap between the connecting end and the connecting channel; the valve seat is welded to the pipe, and the welding position is located at the interface and the gap, the welding position has a weld mark formed by the solder, and the weld mark includes a first weld mark and a second weld mark, the first weld mark is located in the gap, and the second weld mark is annular and is located between the area of ​​the outer surface of the valve seat adjacent to the interface and the area of ​​the outer surface of the pipe adjacent to the interface. Through the above structural design, the utility model can extend the welding position of the pipe and the valve seat to the outside of the valve seat, that is, the weld mark is formed by welding with the solder set in the gap between the connecting end and the connecting channel and the solder set between the outer surface of the valve seat and the outer surface of the pipe, thereby extending the welding depth of the pipe and the valve seat, and on the basis of achieving the same welding depth, the utility model does not need to widen the overall width of the valve seat compared with the existing scheme, which can avoid the increase of material cost and is conducive to the miniaturization design of the valve structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The various objects, features and advantages of the present invention will become more apparent by considering the following detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings are only exemplary illustrations of the present invention and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always represent the same or similar parts. Among them:

[0018] Figure 1 is a schematic diagram of a three-dimensional structure of a valve structure according to an exemplary embodiment;

[0019] Figure 2 yes Figure 1 A front view of the valve structure is shown;

[0020] Figure 3 yes Figure 1 A top view of the valve structure is shown;

[0021] Figure 4 is along Figure 3 The cross-sectional view made by the straight line AA in;

[0022] Figure 5 yes Figure 1 A schematic diagram of the three-dimensional structure of the pipe is shown;

[0023] Figure 6 is a schematic diagram of a three-dimensional structure of a valve structure according to another exemplary embodiment;

[0024] Figure 7 yes Figure 6 A cross-sectional view of the valve structure is shown;

[0025] Figure 8 yes Figure 7 Schematic diagram of the three-dimensional decomposition of

[0026] Fig. 9 yes Figure 6 A schematic diagram of the three-dimensional structure of the welding ring sleeve is shown.

[0027] The following are the descriptions of the reference numerals:

[0028] 100. Valve seat;

[0029] 110. Connecting channel;

[0030] 111. Interface;

[0031] 120. Groove;

[0032] 200. Take over;

[0033] 210. Connecting end;

[0034] 211. Positioning protrusion;

[0035] 212. Depression;

[0036] 301. First weld mark;

[0037] 302. Second weld mark;

[0038] 400. Welding ring sleeve;

[0039] 410. First ring;

[0040] 420. Second ring;

[0041] 430. Transition connection;

[0042] W. width;

[0043] X. Axial. DETAILED DESCRIPTION

[0044] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and drawings therein are essentially for illustrative purposes rather than for limiting the present invention.

[0045] In the following description of different exemplary embodiments of the utility model, reference is made to the accompanying drawings, which form a part of the utility model and in which different exemplary structures, systems and steps that can implement multiple aspects of the utility model are shown by way of example. It should be understood that other specific schemes of components, structures, exemplary devices, systems and steps can be used, and structural and functional modifications can be made without departing from the scope of the utility model. Moreover, although the terms "above", "between", "within", etc. can be used in this specification to describe different exemplary features and elements of the utility model, these terms are used herein only for convenience, such as according to the direction of the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of the utility model.

[0046] See also Figure 1 , which is a representative three-dimensional schematic diagram of the valve structure proposed by the utility model. In this exemplary embodiment, the valve structure proposed by the utility model is described by taking the cut-off valve used in the thermal management system as an example. It is easy for those skilled in the art to understand that in order to apply the relevant design of the utility model to other types of valve structures, various modifications, additions, substitutions, deletions or other changes are made to the specific embodiments described below, and these changes are still within the scope of the principle of the valve structure proposed by the utility model.

[0047] Related References Figures 2 to 5 , Figure 2 A front view of the valve structure is representatively shown in FIG. Figure 3 A top view of the valve structure is representatively shown in FIG. Figure 4 The representative diagram shows the Figure 3 The cross-sectional view made by the straight line AA in; Figure 5 The three-dimensional structural diagram of the connecting pipe 200 is representatively shown in FIG. The structures, connection modes and functional relationships of the main components of the valve structure proposed by the present utility model will be described in detail below in conjunction with the above drawings.

[0048] like Figures 1 to 4As shown, in one embodiment of the present utility model, the valve structure proposed by the present utility model includes a valve seat 100 and a connecting pipe 200, the valve seat 100 has a valve cavity inside, the valve seat 100 is provided with a connecting channel 110, one end of the connecting channel 110 opens to the outer surface of the valve seat 100 to form an interface 111, and the other end of the connecting channel 110 is connected to the valve cavity, and the connecting end 210 of the connecting pipe 200 is inserted into the connecting channel 110 through the interface 111, and there is a gap between the connecting end 210 of the connecting pipe 200 and the connecting channel 110 of the valve seat 100 (the gap is the gap presented by the product structure, which is different from the assembly gap that may exist before the connecting pipe 200 and the valve seat 100 are welded). The valve seat 100 is welded to the connecting pipe 200, and the welding position of the valve seat 100 and the connecting pipe 200 is located at the above-mentioned interface 111 and the gap of the connecting channel 110. The welding position has a welding mark formed by solder, and the welding mark includes a first welding mark 301 and a second welding mark 302. Specifically, the first weld mark 301 is located in the gap between the connecting end 210 and the connecting channel 110, and the second weld mark 302 is annular and located between the area of ​​the outer surface of the valve seat 100 adjacent to the interface 111 and the area of ​​the outer surface of the connecting pipe 200 adjacent to the interface 111. It should be noted that the structural form of the solder before welding is shown in the drawings by way of example, and it should be understood that the second weld mark 302 formed by the solder after welding may have other possible structural forms. Of course, one side of the second weld mark 302 is connected to the area of ​​the outer surface of the valve seat 100 adjacent to the interface 111, and the other side is connected to the outer surface of the connecting pipe 200. Through the above-mentioned structural design, the utility model can extend the welding position of the connecting pipe 200 and the valve seat 100 to the outside of the valve seat 100, that is, the welding is performed by the solder arranged in the gap between the connecting end 210 and the connecting channel 110 and the solder arranged between the outer surface of the valve seat 100 and the outer surface of the connecting pipe 200 to form a weld mark, thereby extending the welding depth of the connecting pipe 200 and the valve seat 100, and on the basis of achieving the same welding depth, compared with the existing scheme, the utility model does not need to widen the overall width of the valve seat 100, can avoid the increase of material cost, and is conducive to the miniaturized design of the valve structure.

[0049] like Figure 4As shown, in one embodiment of the present invention, along the radial direction of the connecting channel 110 (or the radial direction of the connecting pipe 200), the width W of the gap can be 0.05mm to 0.2mm, such as 0.05mm, 0.07mm, 0.09mm, 0.12mm, 0.15mm, 0.2mm, etc. Through the above structural design, the present invention can avoid the gap width W being too small, which makes it difficult for the solder to enter the gap, and ensure the welding strength. At the same time, since the solder enters the gap away from the capillary siphon, the present invention can avoid the gap width W being too large, which makes the capillary siphon effect not obvious, and ensure that the solder fully enters the gap. In some embodiments, the gap width W can also be less than 0.05mm, or can be greater than 0.2mm, such as 0.049mm, 0.205mm, etc., and is not limited to this embodiment.

[0050] like Figure 4 As shown, based on the structural design that the width W of the gap is 0.05 mm to 0.2 mm, in one embodiment of the present invention, along the radial direction of the connecting channel 110 (or the radial direction of the connecting pipe 200), the width W of the gap can be further 0.1 mm.

[0051] like Figure 4 and Figure 5 As shown, in one embodiment of the present invention, a positioning protrusion 211 is protruding from the outer surface of the connecting end 210 of the connecting pipe 200, and the positioning protrusion 211 abuts against the inner surface of the connecting channel 110. Through the above structural design, due to the design of the gap, the outer diameter of the connecting end 210 of the connecting pipe 200 is smaller than the inner diameter of the connecting channel 110. The present invention can use the positioning protrusion 211 to locate the relative position of the connecting pipe 200 and the connecting channel 110, thereby improving the stability during the welding process. Figure 5 As shown, based on the structural design that the connection end 210 of the pipe 200 is provided with a positioning protrusion 211, in one embodiment of the present invention, there may be at least two positioning protrusions 211, and these positioning protrusions 211 are arranged at intervals along the circumference of the pipe 200, and the centers of at least two positioning protrusions 211 may be located on the same circular path. Through the above structural design, the present invention can further improve the positioning effect of the pipe 200 and the connecting channel 110 on the basis of the above gap design, thereby further improving the stability during the welding process.

[0052] like Figure 5As shown, based on the structural design of at least two positioning protrusions 211, in one embodiment of the present invention, the connecting end 210 of the connecting pipe 200 can be provided with three positioning protrusions 211. Through the above structural design, compared with only providing two positioning protrusions 211, the present invention can make the positioning effect more stable, and compared with providing four or more positioning protrusions 211, the present invention can reduce the structural complexity and reduce the processing cost.

[0053] like Figure 5 As shown, based on the structural design of at least two positioning protrusions 211, in one embodiment of the present invention, at least two positioning protrusions 211 can be evenly arranged along the circumference of the connecting pipe 200. Through the above structural design, the present invention can make the positioning effect of the connecting pipe 200 and the connecting channel 110 at each position more uniform.

[0054] Based on the structural design that the connection end 210 of the pipe 200 is provided with a positioning protrusion 211, in one embodiment of the present invention, a first reference plane parallel to the axial direction X of the pipe 200 and parallel to the protruding direction of the positioning protrusion 211 (i.e., one of the radial directions of the pipe 200) is defined, and the cross-sectional shape of the positioning protrusion 211 can be a circular arc or an elliptical arc with the first reference plane as the cutting surface. Through the above structural design, compared with the design based on the above cutting surface with a cross-sectional shape of a rectangle, an oblong, a polygon or other shapes, the present invention can further reduce the processing difficulty of the positioning protrusion 211.

[0055] Based on the structural design that the connection end 210 of the pipe 200 is provided with a positioning protrusion 211, in one embodiment of the present invention, a second reference plane parallel to the axial direction X of the pipe 200 and perpendicular to the protruding direction of the positioning protrusion 211 (i.e., one of the radial directions of the pipe 200) is defined, and the cross-sectional shape of the positioning protrusion 211 can be circular or elliptical with the second reference plane as the cutting surface. Through the above structural design, compared with the design based on the above cutting surface with a cross-sectional shape of a rectangle, an oblong, a polygon or other shapes, the present invention can further reduce the processing difficulty of the positioning protrusion 211.

[0056] As mentioned above, taking the connecting pipe 200 made of aluminum as an example, since the wall thickness of the aluminum tube is relatively thick, it is difficult to deform. The utility model adopts a positioning protrusion 211 with a circular (circular arc) or elliptical arc (elliptical arc) cross-section to make the force points during processing more concentrated, that is, only a small force is required to complete the processing of the positioning protrusion 211, thereby reducing the processing difficulty.

[0057] like Figure 4As shown, based on the structural design that the connection end 210 of the pipe 200 is provided with a positioning protrusion 211, in one embodiment of the utility model, the positioning protrusion 211 can be formed by the pipe 200 through an integral molding process, and a recess 212 is formed on the inner surface of the pipe 200 corresponding to the position of the positioning protrusion 211. Through the above structural design, the utility model can reduce the difficulty of processing the positioning protrusion 211 and avoid the increase of material cost.

[0058] Based on the structural design that the connection end 210 of the connecting pipe 200 is provided with a positioning protrusion 211, in one embodiment of the present utility model, the material of the valve seat 100 can be aluminum (Al), and the material of the connecting pipe 200 can be aluminum. When the valve seat 100 and the connecting pipe 200 are made of the same material, for example, both are aluminum, if there is no assembly gap between the valve seat 100 and the connecting pipe 200 (i.e., between the connection end 210 and the connecting channel 110) before welding, such as interference fit, etc., since the valve seat 100 and the connecting pipe 200 have the same thermal expansion coefficient, the expansion deformation state of the two is the same under the high temperature welding environment, so that it is difficult for the two to form the above-mentioned gap after welding, which affects the penetration of solder into the connecting pipe 200 and the connecting channel 110. Therefore, when the valve seat 100 and the connecting pipe 200 are made of the same material, for example, aluminum, an assembly gap must be set between the valve seat 100 and the connecting pipe 200 before welding to ensure the formation of the gap after welding and the penetration of the solder, which is beneficial to improving the welding effect. In addition, compared with other metal materials such as copper (Cu), the use of aluminum material in the utility model can further reduce material costs. In some embodiments, the valve seat 100 and the connecting pipe 200 may be made of other possible materials respectively. For example, the valve seat 100 and the connecting pipe 200 may both be made of copper (Cu), and further, may be made of brass or copper. On this basis, due to the different thermal expansion coefficients of brass and copper, even if the connecting pipe 200 and the connecting channel 110 are interference fit (for ease of assembly, the valve seat 100 and the connecting pipe 200 may be made of one brass and the other copper), in the high temperature welding environment, brass and copper can form a gap with capillary action due to the difference in thermal expansion coefficients, and the solder can also penetrate between the connecting pipe 200 and the connecting channel 110. Therefore, no assembly gap may be set between the valve seat 100 and the connecting pipe 200 (i.e., between the connecting end 210 and the connecting channel 110) before welding. Of course, when the valve seat 100 and the connecting pipe 200 are made of other materials such as brass and copper, a design with an assembly gap between the connecting pipe 200 and the valve seat 100 before welding can also be adopted, thereby further improving the penetration effect of the solder, which is not limited to this embodiment.

[0059] It should be understood that no matter what the materials of the valve seat 100 and the connecting pipe 200 are, whether they are the same, and whether there is an assembly gap between the connecting channel 110 of the valve seat 100 and the connecting pipe 200 before welding. In various possible implementations consistent with the design concept of the utility model, the product (i.e., the valve structure after the valve seat 100 and the connecting pipe 200 are welded) has a gap between the connecting channel 110 and the connecting end 210 of the connecting pipe 200, and at least a part of the gap has a first welding mark 301 formed by the infiltrated solder.

[0060] See also Figures 6 to 9 As shown, Figure 6 A three-dimensional schematic diagram of a valve structure that can embody the principle of the utility model is representatively shown in FIG. Figure 7 The cross-sectional view of the valve structure is representatively shown in FIG. Figure 4 Of Figure 3 The cutting angle; Figure 8 Representatively shown in Figure 7 3D exploded schematic diagram, which specifically shows the 3D exploded structure when the connecting pipe 200, the second welding mark 302 (welding material) and the welding ring sleeve 400 are separated from the valve seat 100; Fig. 9 , a three-dimensional structural schematic diagram of the welding ring sleeve 400 is representatively shown, wherein the welding ring sleeve 400 is partially cut to show its cross-sectional shape.

[0061] like Figure 6 and Figure 7 As shown, in one embodiment of the present invention, the valve structure proposed by the present invention may further include a welding ring sleeve 400, which is sleeved on the outer periphery of the connecting pipe 200, and the welding ring sleeve 400, the valve seat 100 and the connecting pipe 200 together form a receiving space, and the solder is received in the receiving space to form a first welding mark 301 and a second welding mark 302 after welding. Through the above structural design, considering that the solder may have a tendency to flow downward due to the influence of gravity during welding, resulting in poor flow soldering, the present invention can use the welding ring sleeve 400 to wrap the solder in the receiving space, so that the solder is positioned at the place to be welded, avoiding poor flow soldering, and is conducive to improving the welding effect.

[0062] like Fig. 9As shown, based on the structural design that the valve structure includes a welding ring sleeve 400, in one embodiment of the present invention, along the axial direction X of the connecting pipe 200, the welding ring sleeve 400 has a first ring portion 410 and a second ring portion 420 connected along the axial direction X. Specifically, the first ring portion 410 is sleeved on the outer periphery of the connecting pipe 200, the inner diameter of the second ring portion 420 is greater than the outer diameter of the connecting pipe 200, and the second ring portion 420 has opposite first and second ends, the first end is connected to the first ring portion 410, and the second end is connected to the valve seat 100. Through the above structural design, the present invention can use the first ring portion 410 and the second ring portion 420 to respectively achieve effective connection with the connecting pipe 200 and the valve seat 100, and further ensure the wrapping effect of the solder.

[0063] like Fig. 9 As shown, based on the structural design of the welding ring sleeve 400 having the first ring portion 410 and the second ring portion 420, in one embodiment of the present invention, the welding ring sleeve 400 further has a transition connection portion 430, and the transition connection portion 430 is connected between the first ends of the first ring portion 410 and the second ring portion 420, and the cross section of the transition connection portion 430 can be arc-shaped. Through the above structural design, the present invention can use the transition connection portion 430 to achieve the transition connection between the first ring portion 410 and the second ring portion 420, and can avoid the problem of stress concentration, which is conducive to improving the structural stability and reliability.

[0064] like Figure 7 and Figure 8 As shown, based on the structural design of the welding ring sleeve 400 having the first ring portion 410 and the second ring portion 420, in one embodiment of the present utility model, the outer surface of the valve seat 100 may be provided with an annular groove 120, and the groove 120 is located at the periphery of the interface and arranged around the interface 111. On this basis, the second end of the second ring portion 420 is inserted into the groove 120. Through the above structural design, the utility model can improve the connection effect between the welding ring sleeve 400 and the valve seat 100, and at the same time can further avoid poor flow soldering or overflow of the solder, ensure that the solder repeatedly penetrates between the connecting pipe 200 and the connecting channel 110, and further improve the welding effect.

[0065] It should be noted that the valve structures shown in the drawings and described in this specification are only a few examples of the many valve structures that can adopt the principles of the present invention. It should be clearly understood that the principles of the present invention are by no means limited to any details of the valve structures shown in the drawings or described in this specification or any components of the valve structures.

[0066] In summary, the valve structure proposed in the present invention includes a valve seat 100 and a connecting pipe 200, the valve seat 100 is provided with a connecting channel 110, one end of the connecting channel 110 is opened on the outer surface of the valve seat 100 to form an interface 111, and the connecting end 210 of the connecting pipe 200 passes through the interface 111 and is inserted into the connecting channel 110, and there is a gap between the connecting end 210 and the connecting channel 110; the valve seat 100 and the connecting pipe 200 are welded and connected, and the welding position is located at the interface 111 and the gap, the welding position has a weld mark formed by solder, and the weld mark includes a first weld mark 301 and a second weld mark 302, the first weld mark 301 is located in the gap, and the second weld mark 302 is annular and is located between the area of ​​the outer surface of the valve seat 100 adjacent to the interface 111 and the area of ​​the outer surface of the connecting pipe 200 adjacent to the interface 111. Through the above-mentioned structural design, the utility model can extend the welding position of the connecting pipe 200 and the valve seat 100 to the outside of the valve seat 100, that is, the welding is performed by the solder arranged in the gap between the connecting end 210 and the connecting channel 110 and the solder arranged between the outer surface of the valve seat 100 and the outer surface of the connecting pipe 200 to form a weld mark, thereby extending the welding depth of the connecting pipe 200 and the valve seat 100, and on the basis of achieving the same welding depth, compared with the existing scheme, the utility model does not need to widen the overall width of the valve seat 100, can avoid the increase of material cost, and is conducive to the miniaturized design of the valve structure.

[0067] The exemplary embodiments of the valve structure proposed by the present utility model are described and / or illustrated in detail above. However, the embodiments of the present utility model are not limited to the specific embodiments described here. On the contrary, the components and / or steps of each embodiment can be used independently and separately from other components and / or steps described here. Each component and / or each step of an embodiment can also be used in combination with other components and / or steps of other embodiments. When introducing the elements / components / etc. described and / or illustrated here, the terms "one", "one" and "above" are used to indicate the presence of one or more elements / components / etc. The terms "comprising", "including" and "having" are used to indicate the meaning of open inclusion and mean that in addition to the listed elements / components / etc., there may be other elements / components / etc. In addition, the terms "first" and "second" in the claims and the specification are used only as marks and are not numerical restrictions on their objects.

[0068] Although the valve structure proposed by the present invention has been described according to different specific embodiments, those skilled in the art will recognize that the implementation of the present invention can be modified within the spirit and scope of the claims.

Claims

1. A valve structure, characterized in that: It includes a valve seat and a connecting pipe, the valve seat is provided with a connecting channel, one end of the connecting channel is opened to the outer surface of the valve seat to form an interface, the connecting end of the connecting pipe passes through the interface and is inserted into the connecting channel, and there is a gap between the connecting end and the connecting channel; wherein, the valve seat is welded to the connecting pipe, and the welding position is located at the interface and the gap, the welding position has a weld mark formed by solder, the weld mark includes a first weld mark and a second weld mark, the first weld mark is located in the gap, the second weld mark is annular, and is located between the area of ​​the outer surface of the valve seat adjacent to the interface and the area of ​​the outer surface of the connecting pipe adjacent to the interface.

2. The valve structure according to claim 1, characterized in that: Along the radial direction of the connecting channel, the width of the gap is 0.05 mm to 0.2 mm.

3. The valve structure according to claim 1, characterized in that: A positioning protrusion is protrudingly provided on the outer surface of the connecting end of the connecting pipe, and the positioning protrusion abuts against the inner surface of the connecting channel.

4. The valve structure according to claim 3, characterized in that: There are at least two positioning protrusions, and at least two positioning protrusions are arranged at intervals along the circumference of the connecting pipe.

5. The valve structure according to claim 3, characterized in that: A first reference plane is defined which is parallel to the axial direction of the connecting pipe and parallel to the protruding direction of the positioning protrusion, and the cross-sectional shape of the positioning protrusion is a circular arc or an elliptical arc with the first reference plane as the cutting plane; and / or A second reference plane is defined which is parallel to the axial direction of the connecting pipe and perpendicular to the protruding direction of the positioning protrusion. With the second reference plane as the cutting plane, the cross-sectional shape of the positioning protrusion is circular or elliptical.

6. The valve structure according to claim 3, characterized in that: The positioning protrusion is formed by the connecting pipe through an integrated molding process, and a depression is formed on the inner surface of the connecting pipe corresponding to the position of the positioning protrusion.

7. The valve structure according to any one of claims 3 to 6, characterized in that: The valve seat is made of aluminum, and the connecting pipe is made of aluminum.

8. The valve structure according to claim 1, characterized in that: The valve structure also includes a welding ring sleeve, which is sleeved on the outer circumference of the connecting pipe. The welding ring sleeve, the valve seat and the connecting pipe together form a receiving space, and the solder is received in the receiving space to form the first welding mark and the second welding mark.

9. The valve structure according to claim 8, characterized in that: Along the axial direction of the connecting pipe, the welding ring sleeve has a first ring portion and a second ring portion connected along the axial direction, the first ring portion is sleeved on the outer circumference of the connecting pipe, the inner diameter of the second ring portion is larger than the outer diameter of the connecting pipe, the second ring portion has a first end and a second end opposite to each other, the first end is connected to the first ring portion, and the second end is connected to the valve seat.

10. The valve structure according to claim 9, characterized in that: The welding ring sleeve further comprises a transition connection portion, wherein the transition connection portion is connected between the first end of the first ring portion and the first end of the second ring portion, and the cross section of the transition connection portion is arc-shaped; and / or The outer surface of the valve seat is provided with an annular groove, the groove is arranged around the interface, and the second end of the second ring portion is inserted into the groove.

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