A valve device

Abstract

The utility model discloses a valve device, including main valve still including patch, the main valve includes main valve body and first connector, the main valve body includes body portion and first annular portion, the body portion is cylindrical, the first annular portion is circular, the first annular portion is from the outer wall of body portion and is outward convex, the first annular portion is formed through the flanging stamping of body portion, the first connector with first annular portion fixed connection, define the R angle between body portion with first annular portion as first transition portion, the patch surrounds first transition portion, the inner wall of patch with body portion weld fixed the patch has the solder between first transition portion, through setting patch, and set the solder between patch and first transition portion, improve the connection of first transition portion place and strengthen, thereby improved the anti -vibration performance when valve device applied in system.

Description

Technical Field

[0001] This utility model relates to the field of valve technology for refrigeration systems, and specifically to a valve device. Background Technology

[0002] Figure 1 The figure shows a three-dimensional structural diagram of a valve device. The valve device includes a valve tube 01 and three connecting pipe components 02, which are welded and fixed to the valve tube 01. Each connecting pipe component 02 includes a connecting pipe 021 and a connector 022. The connector 022 includes a plate portion 0221 that fits against the valve tube 01 and a cylindrical portion 0222 that is welded to the connecting pipe 021. The connector 022 is made of sheet metal by stamping. During assembly, after the connector 022 is welded to the connecting pipe 021, the plate portion 0221 is welded and fixed to the valve tube 01. In this valve device, the radius 0223 formed during machining at the connection between the plate portion 0221 and the cylindrical portion 0222 may break at the radius 0223 when the valve device is used in a refrigeration system due to vibration, leading to external leakage. In the market, some refrigeration units experience severe vibration conditions. Vibration can cause the pipe fitting 0223, which connects the valve device to the compressor discharge end of the system, to break at the R-angle, leading to external leakage. Although the frequency is not high, it involves subsequent disassembly and maintenance, unit shutdown, etc., which has a significant impact on customers. Utility Model Content

[0003] The purpose of this application is to provide a valve device, including a main valve and a patch. The main valve includes a main valve body and a first connecting pipe. The main valve body includes a body portion and a first annular portion. The body portion is cylindrical, and the first annular portion is annular. The first annular portion protrudes outward from the outer wall of the body portion. The first annular portion is formed by stamping and flanging from the body portion. The first connecting pipe is fixedly connected to the first annular portion. The R-angle between the body portion and the first annular portion is defined as a first transition portion. The patch surrounds the first transition portion and is welded to the main valve body. Solder is present between the inner wall of the patch and the first transition portion.

[0004] In this application, by setting a patch and placing solder between the patch and the first transition portion, the connection at the first transition portion is strengthened, thereby improving the vibration resistance of the valve device when it is used in the system. Attached Figure Description

[0005] Figure 1 A three-dimensional structural diagram of a valve device is provided as the background art.

[0006] Figure 2 The figure shown is a three-dimensional structural schematic diagram of a valve device according to an embodiment of this application;

[0007] Figure 2A As shown Figure 1 A front view of the valve assembly from one angle;

[0008] Figure 2B As shown Figure 2A A schematic left view of the valve device shown;

[0009] Figure 2C As shown Figure 2A Top view of the valve assembly shown;

[0010] Figure 3 As shown Figure 2 A three-dimensional structural diagram of the patch in the valve device shown.

[0011] Figure 3A As shown Figure 3 A front view diagram of the patch from one angle;

[0012] Figure 3B As shown Figure 3 A left-side view of the center patch;

[0013] Figure 3C As shown Figure 3 Top view of the patch;

[0014] Figure 4A As shown Figure 2 A three-dimensional structural diagram of the main valve of the intermediate valve device;

[0015] Figure 4B As shown Figure 4A Cross-sectional schematic diagram of the main valve;

[0016] Figure 4C As shown Figure 4B A partial enlarged view of the main valve body at point K;

[0017] Figure 4D As shown Figure 4C A magnified view of a section at point K1;

[0018] Figure 4E As shown Figure 4D The image shows a magnified view of a portion of the patch. Detailed Implementation

[0019] The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the present invention.

[0020] Figure 2 The figure shown is a three-dimensional structural schematic diagram of a valve device according to an embodiment of this application; Figure 2A As shown Figure 1A front view of the valve assembly from one angle; Figure 2B As shown Figure 2A A schematic left view of the valve device shown; Figure 2C As shown Figure 2A Top view of the valve assembly shown; Figure 3 As shown Figure 2 A three-dimensional structural diagram of the patch in the valve device shown. Figure 3A As shown Figure 3 A front view diagram of the patch from one angle; Figure 3B As shown Figure 3 A left-side view of the center patch; Figure 3C As shown Figure 3 Top view of the patch; Figure 4A As shown Figure 2 A three-dimensional structural diagram of the main valve of the intermediate valve device; Figure 4B As shown Figure 4A Cross-sectional schematic diagram of the main valve; Figure 4C As shown Figure 4B A partial enlarged view of the main valve body at point K; Figure 4D As shown Figure 4C A magnified view of a section at point K1; Figure 4E As shown Figure 4D The image shows a magnified view of a portion of the patch.

[0021] The valve assembly 100 includes a main valve 1 and a pilot valve 2, with the pilot valve 2 fixedly connected to a bracket 15 of the main valve 1. The main valve 1 includes a main valve body 10, a bracket component 15, a first connecting pipe 11, a second connecting pipe 12, a third connecting pipe 13, and a fourth connecting pipe 14. The main valve body 10, bracket component 15, first connecting pipe 11, second connecting pipe 12, third connecting pipe 13, and fourth connecting pipe 14 are all made of stainless steel. The second connecting pipe 12, third connecting pipe 13, and fourth connecting pipe 14 are located on one side of the main valve body 10. The first connecting pipe 11 is located on the other side of the main valve body 10, i.e., on... Figure 2A As shown in the schematic front view, the first connecting pipe 11 is located above the main valve body 10, while the second connecting pipe 12, the third connecting pipe 13, and the fourth connecting pipe 14 are located below the main valve body 10. In one embodiment, the first connecting pipe 11 is used to connect to the exhaust side of the compressor in the refrigeration system.

[0022] In one specific embodiment, the bracket component 15 and the patch 16 are separate and do not contact each other. In this way, when the patch 16 is stamped from stainless steel sheet, it is not restricted by the structure of the bracket component 15, which saves more material and reduces the processing difficulty.

[0023] As shown in the figure, the main valve body 10, the first connecting pipe 11, the second connecting pipe 12, the third connecting pipe 13 and the fourth connecting pipe 14 are cylindrical and can be made of stainless steel pipe. Each connecting pipe is welded and fixed to the main valve body 10.

[0024] like Figures 4A-4C As shown, the main valve body 10 includes a cylindrical body portion 111 and a first annular portion 112 protruding from the outer wall of the body portion 111. The first connecting pipe 11 is welded and fixed to the first annular portion 112.

[0025] The main valve body 10 is made of stainless steel tubing, and the first annular portion 112 is formed by stamping and flanging the stainless steel tubing. For example... Figure 4C As shown, the main body 111 and the first annular part 112 are connected by an R-angle. In the market where valve devices are used, the strength at the R-angle is relatively weak. In particular, when the radius of the R-angle is small, the stress at this position will be greater. When valve devices are used, there is a risk of breakage at the R-angle when subjected to strong or high-frequency vibrations, and such defects have already appeared in the market.

[0026] Based on the strength issues associated with the aforementioned radius (R), the valve device provided in this application further includes a patch 16, which is also made of stainless steel. For example... Figure 3-Figure 3C As shown, the patch 16 is sheet-shaped and includes a first surface 16A facing the main valve body 10's body portion 111 and a second surface 16B opposite to the first surface 16A. The patch 16 includes a socket 16C penetrating the first surface 16A and the second surface 16B. The shape of the socket wall 16C is adapted to the shape of the outer wall of the first annular portion 112. The patch 16 can be fitted onto the outer periphery of the first annular portion 112 from the end of the first connecting pipe 11 away from the main valve body 10, and then contact the body portion 111, fitting around the outer periphery of the R-corner. The shape of the first surface 16A of the patch 16 is adapted to the shape of the outer wall of the body portion 111. Its first surface 16A is arc-shaped. For ease of description, the R-corner is defined as the first transition portion 113. The patch 16 is located on the outer periphery of the first transition portion 113. In this embodiment, the wall of the socket 16C is circular. Define the diameter of the socket 16C as D1, and define the maximum outer diameter of the first annular portion 112 as D2. Then, 0 ≤ mm and D1 - D2 ≤ 1 mm. The significance of this dimensional design is that if the difference between the two is less than 0, press-fitting is not possible, and the patch 16 will not easily contact the body portion 111 after being fitted through the outer wall of the first annular portion 112. If the difference between the two is greater than 1 mm, positioning between the patch 16 and the first transition portion 113 will be difficult, and the patch 16 will not be able to strengthen the first transition portion 113, thus wasting solder.

[0027] Solder is present between the hole wall of patch 16 and the first transition portion 113, which connects the first transition portion 113, patch 16, and the body portion 111 of the main valve body 10. Specifically, as shown... Figure 3AAs shown, the patch 16 is provided with at least one through hole 164. In this embodiment, four through holes 164 are specifically provided. Each through hole 164 is evenly distributed around the first transition portion 113. Bronze solder is provided in each through hole 164. The solder between the hole wall of the socket 16C and the first transition portion 113 is bronze solder. In the specific manufacturing process, bronze solder paste is applied to the aforementioned through holes and the outer edge of the patch 16. Then, the patch 16 and the main body 111 of the main valve body 10 are first laser-spot welded for positioning, and then furnace-welded together with the main valve body 10. This process is convenient and efficient. The four through holes 164 are specifically circular holes. The arrangement of the four through holes 164 facilitates the penetration of solder in all directions, improves the welding uniformity, and makes it easier for the solder to flow between the hole wall of the socket 163 and the first transition portion 113.

[0028] In a further embodiment, patch 16 is stamped from stainless steel sheet, resulting in high forming efficiency. The thickness W of patch 16 is greater than or equal to 1 / 4R of the radius R at the first transition portion 113, i.e., W is greater than or equal to one-quarter of the radius of the radius R. Furthermore, W is less than the distance H between the end of the first annular portion 112 furthest from the body portion 111 and the body portion 111. That is, when the first annular portion 112 is formed by flanging a stainless steel tube, the thickness W is less than or equal to the flanging height H.

[0029] In further proposals, such as Figures 4C-4E As shown, the wall of the socket 16C includes a diameter section 166 and an inclined section 165 whose inner diameter gradually increases from the straight section 166 towards the main valve body 10. The inclined section 165 ensures that the patch 16 fits snugly against the body portion 111 of the main valve body 10, avoiding interference from the first transition portion 113. Of course, it is understandable that to avoid interference from the first transition portion 113, the diameter of the socket 16C could be set to be larger without the inclined section. However, this would increase the amount of solder used between the wall of the socket 16C and the main valve body 10, and a larger gap would weaken the connection between the two parts. The advantage of setting the inclined section 165 is that it can save solder and ensure capillary action at the weld, thus ensuring welding reliability.

[0030] As one specific embodiment, such as Figure 4BAs shown, the main valve body 10 also includes a first copper tube 17, a second copper tube 18, a third copper tube 19, and a fourth copper tube 20 made of copper. The first copper tube 17 is welded to the first connecting pipe 11, the second copper tube 18 is welded to the second connecting pipe 12, the third copper tube 19 is welded to the third connecting pipe 13, and the fourth copper tube 20 is welded to the fourth connecting pipe 14. In this embodiment, the maximum outer diameter of each connecting pipe and the maximum outer diameter of each copper tube are smaller than the inner diameter of the socket hole 16C of the patch 16. The patch 16 is sleeved on the outer periphery of the first transition portion 113 from the end of the first copper tube 17 away from the main valve body 10. That is, the installation of the patch 16 is completed after the first connecting pipe 11 and the main body portion 111 are pre-installed. The patch 16 is then installed on the main valve body 10 and then furnace welded together with the main valve body 10.

[0031] Of course, it is understandable that, based on the aforementioned embodiments, if the maximum outer diameter of either the first copper tube 17 or the first connecting tube 11 is greater than the inner diameter of the socket 16C of the patch 1, then the patch 16 must first be spot welded to the body part 111 before assembling the first connecting tube 11 with the body part 111.

[0032] As can be seen, the patch 16 of this application is welded to the main valve body 10, which strengthens the connection at the first transition part 113 and improves the vibration resistance of the valve device. This reinforced structure is not limited by the outer diameter of each connecting pipe; it can be achieved simply by changing the assembly sequence of each connecting pipe and patch 16 with the main body 111.

[0033] The above examples illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the technical solution and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A valve device comprising a main valve, characterized in that, It also includes a patch. The main valve includes a main valve body and a first connecting pipe. The main valve body includes a body portion and a first annular portion. The body portion is cylindrical, and the first annular portion is circular. The first annular portion protrudes outward from the outer wall of the body portion. The first annular portion is formed by stamping and flanging from the body portion. The first connecting pipe is fixedly connected to the first annular portion. The R-angle between the body portion and the first annular portion is defined as a first transition portion. The patch surrounds the first transition portion. The patch is welded and fixed to the main valve body. There is solder between the inner wall of the patch and the first transition portion.

2. The valve device according to claim 1, characterized in that, The main valve body, the first connecting pipe, and the patch are all made of stainless steel. The thickness of the patch is defined as W, then W is greater than or equal to 1 / 4 of the radius of the R-angle at the first transition part 113.

3. The valve device according to claim 1 or 2, characterized in that, The patch includes a socket with a circular wall. The diameter of the socket is defined as D1. The outer wall of the first annular portion is set with a constant diameter. The outer diameter of the first annular portion is defined as D2. Then, 0 ≤ mm and D1 - D2 ≤ 1 mm.

4. The valve device according to claim 3, characterized in that, The patch includes a first surface opposite to the body and a second surface opposite to the first surface. The shape of the first surface is adapted to the shape of the outer wall of the body. The patch includes at least one through hole that penetrates the first surface and the second surface. Solder is disposed in the through hole.

5. The valve device according to claim 3, characterized in that, The patch includes a first surface opposite to the body and a second surface opposite to the first surface. The shape of the first surface is adapted to the shape of the outer wall of the body. The patch includes four through holes, each of which penetrates the first surface and the second surface. The through holes are evenly distributed around the socket hole, and solder is disposed in each of the through holes.

6. The valve device according to claim 4 or 5, characterized in that, Each of the through holes is provided with bronze solder, and the solder between the hole wall of the sleeve hole and the first transition part is bronze solder.

7. The valve device according to claim 4 or 5, characterized in that, Each of the through holes is provided with bronze solder, and the solder between the hole wall of the sleeve hole and the first transition part is bronze solder. The patch is furnace welded to the main valve body 10.

8. The valve device according to claim 4 or 5, characterized in that, Each of the through holes is provided with bronze solder, and the solder between the hole wall of the socket and the first transition part is bronze solder. The patch is furnace welded to the main valve body. The hole wall of the socket of the patch includes a diameter section and an inclined section. The inner diameter of the inclined section gradually increases from the diameter section towards the main valve body.

9. The valve device according to claim 4 or 5, characterized in that, Each of the through holes is provided with bronze solder, the solder between the hole wall of the sleeve hole and the first transition part is bronze solder, and the outer edge of the patch is laser-spot welded to the body part for positioning.

10. The valve device according to any one of claims 1-9, characterized in that, It also includes a pilot valve, and the main valve also includes a bracket component made of stainless steel. The pilot valve is fixedly connected to the main valve body through the bracket. The bracket component does not contact the patch. The first connecting pipe is used to connect to the exhaust side of the compressor.

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