阅读说明：本技术 阀装置的制造方法、管路组件的制造方法及阀装置 (Method for manufacturing valve device, method for manufacturing pipeline assembly, and valve device ) 是由 不公告发明人 于 2019-11-22 设计创作，主要内容包括：本发明公开一种管路组件的制造方法、阀装置的制造方法以及该方法制得的阀装置,步骤主要包括将过滤部件压入管件内、该管件经预加工成型出第一管路部,便于限位或卡紧该过滤部件；进一步提供预组装的阀部件,其进出口接口的至少一个与所述管路组件的焊接固定,可以得到集成有过滤部件的阀装置,通过将过滤部件置于第一管路部的管路通道,使得管路组件集成有过滤部件,使得所述管路组件与阀部件或其它需要过滤的部件焊接固定后,即可将过滤部件应用在制冷系统。(The invention discloses a manufacturing method of a pipeline assembly, a manufacturing method of a valve device and the valve device manufactured by the method, which mainly comprises the steps of pressing a filtering part into a pipe fitting, and forming a first pipeline part by preprocessing the pipe fitting, so that the filtering part is convenient to limit or clamp; and the filtering component is integrated in the pipeline assembly by placing the filtering component in the pipeline channel of the first pipeline part, so that the filtering component can be applied to the refrigerating system after the pipeline assembly is welded and fixed with the valve component or other components needing filtering.)

1. A method of manufacturing a valve device (100), the method comprising the steps of:

preprocessing an original pipe fitting, and at least forming a first pipeline part to obtain a pipe fitting (10);

providing a filter component (2), forming a clamp piece and a net piece by the filter component, and assembling and limiting the clamp piece and the net piece;

pressing a filtering part (2) into the pipe fitting (10), limiting and matching the outer wall part of the pressed filtering part (2) with the inner wall part of the first pipeline part (11) to obtain a pipeline assembly spare part, and processing again to obtain a pipeline assembly (1);

providing a pre-assembled valve component, wherein the valve component comprises an inlet part (101), and the inlet part (101) of the valve component is fixedly welded with the pipeline component (1);

alternatively, a pre-assembled valve element is provided, the valve element comprising an inlet part (101) and an outlet part (102), at least two line assemblies being provided, wherein one line assembly (1) is welded to the inlet part and the other line assembly (1') is welded to the outlet part (102) of the valve element.

2. A method of manufacturing a valve device according to claim 1, wherein the preprocessing step is performed on the raw pipe:

flaring is carried out from one end of an original pipe fitting, and a part of the original pipe fitting is deformed into a first pipeline part (11), wherein the part of the original pipe fitting which is not flared forms a second pipeline part (12), and the inner diameter of the second pipeline part is smaller than that of the first pipeline part, so that an opening is provided for the filter component (2) to be installed;

the outer diameter of the formed clamp part (2) is larger than the inner diameter of the first pipeline part (11), and the outer wall part of the filter part (2) after press fitting is in interference fit with the inner wall part of the first pipeline part (11) so that the outer wall part and the inner wall part are abutted.

3. A method of manufacturing a valve device according to claim 1 or 2, wherein the method of manufacturing the filter member (2) comprises:

providing a metal blank, and performing forming treatment in a pressing forming mode to form a first wall part (211), a second wall part (212) and a connecting part (213), wherein the connecting part integrally connects the second wall part and the first wall part, and a set gap (210) is formed between the first wall part and the second wall part through shaping, and the gap allows metal meshes to be inserted;

providing a metal mesh, preprocessing the metal mesh in a finishing or pressing forming mode, forming a fixing part (221) on one part, installing the fixing part into the gap (210), and forming a filtering part (222) on the other part of the metal mesh, wherein the filtering part (222) is exposed out of the first wall part and the second wall part;

and bending the end part of the first wall part (211) to form a closing-in section (214) limited outside the fixed part, thereby obtaining the clamping part (20).

4. A method of manufacturing a valve device according to claim 3, wherein the preprocessing step is performed on the raw pipe:

blanking the metal pipe to form the original pipe fitting, wherein the original pipe fitting forms a first transition section (13) while the first pipeline part (11) is formed in a pre-processing mode;

the method for producing the filter element (2) comprises the following steps: providing a metal blank in an annular cake shape, wherein the press forming mode comprises at least one of a stamping pressing mode, a hydraulic pressing mode or a pneumatic pressing mode, and forming the metal blank;

the method for pressing the filter element (2) into the tube (10) comprises the following steps: during the process of pressing the filter element (2) into the pipe fitting by the press-fitting jig, the closing-in section (214) can guide the filter element (2) to be pressed into the pipe fitting (10) until the filter element (2) is no longer pressed into the pipe fitting until a set distance is kept between the filter element and the first transition section (13).

5. A method of manufacturing a valve device according to claim 3, wherein the method of reworking the prepared piece of piping component to obtain the piping component (1) comprises;

carrying out necking treatment on the position of the pipeline assembly spare part close to the clamp part (20) after press mounting to form a third pipeline part (14) with a necking structure; after necking treatment, the pipeline assembly (1) is provided with a second transition section (15), the second transition section is located on one side of the clamp member (20) and can limit the clamp member (20) to move or swing along the inner wall of the pipe, and the third pipeline part (14) and the second pipeline part (12) are respectively arranged at two ends of the first pipeline part (11).

6. A method of manufacturing a tubing assembly, the method comprising the steps of:

preprocessing an original pipe fitting, and at least forming a first pipeline part and a second pipeline part to obtain a pipe fitting (10);

providing a filter component (2), forming a clamp piece and a net piece by the filter component, and assembling and limiting the clamp piece and the net piece;

and pressing the filtering component (2) into the pipe fitting (10), and performing limit fit on the outer wall part of the pressed filtering component (2) and the inner wall part of the first pipeline part (11) to prepare the pipeline assembly spare part, wherein the other end part of the first pipeline part (11) relatively far away from the second pipeline part (12) is used as a third pipeline part (14), and the third pipeline part (14) is configured into a pipe opening part capable of being welded with other pipeline elements.

7. A method of manufacturing a manifold assembly as defined in claim 6, wherein the pre-processing step is performed on the original manifold: blanking the metal pipe to form an original pipe fitting, preprocessing the original pipe fitting, wherein flaring or reducing treatment is carried out on the original pipe fitting, part of the original pipe fitting is deformed to form a first pipeline part, and the inner diameter of the first pipeline part (11) is larger than that of the second pipeline part so as to provide an opening for the installation of the filtering part (2);

the outer diameter of the formed clamp part (2) is larger than the inner diameter of the first pipeline part (11), and the outer wall part of the filter part (2) after press fitting is in interference fit with the inner wall part of the first pipeline part (11) so that the outer wall part and the inner wall part are abutted.

8. A method of manufacturing a line assembly according to claim 6 or 7, wherein the method of manufacturing the filter element (2) comprises:

the method for producing the filter element (2) comprises the following steps:

providing a metal blank, and forming a first wall part (211), a second wall part (212) and a connecting part (213) by a forming treatment in a pressing forming mode, wherein the connecting part integrally connects the second wall part and the first wall part, and a set gap (210) is formed between the first wall part and the second wall part by shaping, and the gap is convenient for inserting a metal mesh;

providing a metal mesh, preprocessing the metal mesh in a finishing or pressing forming mode, forming a fixing part (221) on one part, installing the fixing part into the gap (210), and forming a filtering part (222) on the other part of the metal mesh, wherein the filtering part (222) is exposed out of the first wall part and the second wall part;

and bending the end part of the first wall part (211) to form a closing-in section (214) limited outside the fixed part, thereby obtaining the clamping part (20).

9. The method of manufacturing a manifold assembly of claim 8,

preprocessing the original pipe fitting:

blanking the metal pipe to form the original pipe fitting, wherein the original pipe fitting forms a first transition section (13) while the first pipeline part (11) is formed in a pre-processing mode;

the method for producing the filter element (2) comprises the following steps: providing a metal blank in an annular cake shape, wherein the press forming mode comprises at least one of a stamping pressing mode, a hydraulic pressing mode or a pneumatic pressing mode, and forming the metal blank;

the method for pressing the filter element (2) into the tube (10) comprises the following steps: during the process of pressing the filter component (2) into the pipe fitting through a press-fitting fixture, the closing-in section (214) can guide the filter component (2) to be pressed into the pipe fitting (10) until the filter component (2) is kept at a set distance from the first transition section (13) and is not pressed into the pipe fitting any more;

after the pipeline assembly is prepared, the pipeline assembly (1) is obtained by processing again; carrying out necking treatment on the position of the pipeline assembly spare part close to the clamp part (20) after press mounting to form a third pipeline part (14) with a necking structure; after necking treatment, the pipeline assembly (1) is provided with a second transition section (15), the second transition section is located on one side of the clamp member (20) and can limit the clamp member (20) to move or swing along the inner wall of the pipe, and the third pipeline part (14) and the second pipeline part (12) are respectively arranged at two ends of the first pipeline part (11).

10. A valve device manufactured by the manufacturing method according to any one of claims 1 to 5, the valve device comprising at least a valve member, a piping component (1) comprising a first piping portion (11), a second piping portion (12) disposed opposite to the first piping portion, and a filter member (2), the filter member (2) being located in a piping passage of the first piping portion (11), the piping component (1) further being formed with a third piping portion having a pipe wall portion welded and fixed to an inlet portion and/or an outlet portion of the valve member;

the filter component (2) comprises a main body positioning part (21) and a net piece (22), the outer wall part of the main body positioning part (21) is in limit fit with the inner wall part of the first pipeline part, and the net piece (22) is located in a pipeline channel of the first pipeline part.

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of refrigeration and system pipelines, in particular to a manufacturing method of a valve device of a system, a manufacturing method of a pipeline assembly and the valve device.

[ background of the invention ]

After a pipeline of a refrigeration system runs for a period of time, if the content of impurities exceeding the system requirement exists in a refrigerant flowing through the pipeline of the system, the impurities can cause adverse effects such as blockage on parts connected with the pipeline in the system, so how to design and provide a filtering scheme can reduce the possibility that the impurities block the parts of the system, and the technical problem needs to be solved by part of technicians at present.

[ summary of the invention ]

The invention aims to provide a manufacturing method of a valve device, a manufacturing method of a pipeline assembly and the valve device which are convenient for integrating a filter structure.

A method of manufacturing a valve device, the method comprising the steps of:

preprocessing an original pipe fitting, and at least forming a first pipeline part to obtain the pipe fitting;

providing a filter component, forming a clamp piece and a net piece by the filter component, and assembling and limiting the clamp piece and the net piece;

pressing a filtering component into the pipe fitting, and performing limit fit on the outer wall part of the filtering component after press fitting and the inner wall part of the first pipeline part to prepare a pipeline assembly preparation part and obtain a pipeline assembly through re-processing;

providing a pre-assembled valve component comprising an inlet portion, the inlet portion of the valve component being weld-secured to the manifold assembly;

alternatively, a pre-assembled valve member is provided, the valve member comprising an inlet portion and an outlet portion, at least two conduit assemblies being provided, one of the conduit assemblies being secured by welding to the inlet portion and the other conduit assembly being secured by welding to the outlet portion of the valve member.

A method of manufacturing a tubing assembly, the method comprising the steps of:

preprocessing an original pipe fitting, and at least forming a first pipeline part to obtain the pipe fitting;

providing a filter component, forming a clamp piece and a net piece by the filter component, and assembling and limiting the clamp piece and the net piece;

and pressing the filtering component into the pipe fitting, and performing limit fit on the outer wall part of the filtering component after press fitting and the inner wall part of the first pipeline part to prepare a pipeline assembly preparation part, wherein the other end part of the first pipeline part, which is relatively far away from the second pipeline part, is used as a third pipeline part, and the third pipeline part is configured into a pipe orifice part capable of being welded with other pipeline elements.

A valve device manufactured by the above manufacturing method, the valve device comprising at least a valve member, a pipe assembly, the pipe assembly comprising a first pipe portion, a second pipe portion disposed opposite to the first pipe portion, and a filter member disposed in a pipe passage of the first pipe portion, the pipe assembly further having a third pipe portion formed with a pipe wall portion welded and fixed to an inlet portion and/or an outlet portion of the valve member;

the filtering component comprises a main body positioning part and a net piece, the outer wall part of the main body positioning part is in limit fit with the inner wall part of the first pipeline part, and the net piece is located in a pipeline channel of the first pipeline part.

According to the manufacturing method of the valve device, the manufacturing method of the pipeline assembly and the valve device, the outer wall portion of the main body positioning portion is abutted and matched with the inner wall portion of the first pipeline portion, so that the filtering component is located in the pipeline channel of the first pipeline portion and is directly arranged in the corresponding system pipeline through the filtering component, the filtering structure is convenient to integrate, and the filtering component can be applied to a refrigerating system after the pipeline assembly is welded and fixed with the valve component or other components needing filtering.

[ description of the drawings ]

FIG. 1 is a schematic view of one embodiment of a valve apparatus;

FIG. 2 is a schematic view of another embodiment of a valve device;

FIG. 3 is a schematic view of one embodiment of a manifold assembly;

FIG. 4 is a schematic view of another embodiment of a manifold assembly;

FIG. 5 is a schematic view of yet another embodiment of a manifold assembly;

FIG. 6 is a schematic perspective view of a filter element;

FIG. 7 is a cross-sectional schematic view of the filter element of FIG. 6;

FIG. 8 is a schematic representation of a tube forming process for the manifold assembly of FIG. 3, showing the first and second manifold portions formed after a flaring or reducing operation;

fig. 9 is a schematic view of the filter element of fig. 6 press-fitted to the tube.

[ detailed description ] embodiments

The invention is further described with reference to the following figures and specific examples.

The technical scheme is that the pipeline assembly and the valve device comprising the pipeline assembly are integrated with a filtering function, so that the structure is relatively simple, and the filtering component can be installed in an applied refrigerating system after the pipeline assembly is welded and fixed with a valve component or other components needing filtering.

Referring to fig. 1 to 6, a valve device 100 includes a pipeline assembly 1 and a valve component, the pipeline assembly 1 includes a first pipeline portion 11, a second pipeline portion 12 and a filtering component 2, specifically, the second pipeline portion 12 can be integrally connected or welded with a system pipeline before the valve device, the filtering component 2 is located in a pipeline channel of the first pipeline portion 11, the pipeline assembly 1 has a pipe wall portion opposite to the second pipeline portion 12, and the pipe wall portion is welded and fixed with an inlet portion and/or an outlet portion of the valve component; the filter component 2 comprises a main body positioning part 21 and a net piece 22, the outer wall part of the main body positioning part 21 is in limit fit with the inner wall part of the first pipeline part, specifically, the outer wall part of the main body positioning part 21 is in butt fit with the inner wall part of the first pipeline part 11, or a limit structure is in clearance fit combination, so that the limit fit of the filter component 2 and the first pipeline part 11 can be realized; the net member 22 includes a fixing portion 221 and a filtering portion 222, the filtering portion 222 has a plurality of meshes 2220, the meshes 2220 communicate with the pipeline channels at two sides of the net member, the fixing portion 221 of the net member 22 and the main body positioning portion 21 are disposed in a limiting manner, so that the net member is prevented from being separated due to the impact of the refrigerant.

The filtering component 2 is clamped and fixedly arranged in the first pipeline part 11, or the filtering component 2 is limited and arranged in the first pipeline part 11 through the limiting structure, so that the pipeline assembly 1 is fixed to valves needing filtering through welding, when the valve component or other components are arranged, the filtering component can be simultaneously arranged in a refrigerating system, the welding parts of the filtering component 2 and pipe fittings are reduced, the process is relatively simplified, and corrosion possibly caused by welding is relatively reduced; the filter element 2 can be installed by making full use of the length of the pipeline, and the necessity of configuring the system pipeline with a filter is alleviated. The pipeline assembly 1 can be used as a front pipeline of an inlet part 101 of the valve device, the filtering part 2 is directly limited in the first pipeline part 11, refrigerant fluid entering the valve device is filtered, the cleanliness of the filtered refrigerant is higher, the possibility that impurities block a smaller valve port of the valve device is reduced, and the refrigerant is easier to pass through when passing through the valve port of the valve device; on the other hand, bubbles may be generated in the flowing process of the refrigerant, the meshes of the filtering component reduce most of the bubbles in the refrigerant fluid, especially the bubbles larger than the meshes of the filtering component, and by scattering the bubbles, the probability of noise generation caused by the bubbles is smaller when the refrigerant passes through the valve port because the bubbles are reduced; or, as shown in fig. 2, the pipeline assembly 1' is used as a pipeline behind the outlet portion 102 of the valve device, and when the valve device is a throttle valve, the filtering structure provided by the scheme has a better noise reduction effect on the refrigerant flowing through the throttle valve; of course, the pipeline assembly 1 may be used as a pipeline before the inlet 101 of the valve device, and the pipeline assembly 1' may be used as a pipeline after the outlet 102, specifically, the inlet may be formed by an inlet pipe or a connector of an inlet port, and the outlet may be formed by an outlet pipe or a connector of an outlet port, so that the above-mentioned filtering and noise reduction is performed twice, specifically, the filtering is mainly performed before the valve port, and the noise of the refrigerant after flowing out of the valve port, especially after the valve port is throttled, is reduced, thereby being helpful for improving the performance of the refrigerant flowing aspect of the refrigeration system.

As shown in fig. 3 and 4, the inner wall of the first pipeline 11 is in interference fit with the outer wall of the main body positioning part 21, and at least a part of the outer wall of the main body positioning part 21 is in contact with at least a part of the inner wall of the first pipeline 11, so as to prevent the filter element 2 from moving in the axial direction and shaking in the radial direction of the pipeline; or as shown in fig. 5, the inner wall of the first pipeline 11 'is in clearance fit with the outer wall of the main body positioning part 21, and at this time, partial contact between the two parts is allowed, the inner wall of the first pipeline 11' has a first protrusion 111 and a second protrusion 113, along the extending direction of the first pipeline 11, the first protrusion 111 is located at a first position of the outer wall of the main body positioning part 21, the second protrusion 113 is located at a second position of the outer wall of the main body positioning part 21, the partial outer wall of the main body positioning part 21 is limited between the first protrusion 111 and the second protrusion 113, and at least a part of the outer wall of the main body positioning part 21 is in contact with and limited by at least a part of the inner wall of the first pipeline 11, so as to reduce excessive axial displacement of the filter element 2 in the pipeline, and allow slight play.

As shown in fig. 5, an implementation method may be to provide an original pipe, the pipe diameter of the original pipe is close to the pipe diameter of the other system pipe, perform dotting or grooving on the pipe wall of the first pipe portion, and limit the axial displacement of the filtering component 2 in the first pipe portion 11, or press the filtering component 2 directly into the first pipe portion to form an interference fit with the inner wall of the pipe (not shown), which is simpler. As shown in fig. 3 and 4, in another embodiment, the original pipe having a smaller pipe diameter may be flared to form the first pipe portion 11 having a larger pipe inner diameter, so that the inner diameter of the first pipe portion 11 is larger than the inner diameter of the second pipe portion 12, and thus the inner diameter of the first pipe portion 11 may be relatively increased without limiting the outer diameter of the filter member 2, and the filter member 2 may be installed in the first pipe portion 11, and the outer wall portion of the main body positioning portion 21 may be in contact fit with or clearance fit with the inner wall portion of the first pipe portion 11, thereby achieving the limit fit between the filter member and the first pipe portion. In another embodiment, the diameter of the original pipe with a larger pipe diameter is reduced to form a second pipeline portion with a smaller pipe diameter, so that the filtering component 2 with a pipe diameter close to the original pipe diameter can be used, the filtering component 2 can be installed in the first pipeline portion 11, the pipe diameter of the second pipeline portion 12 is closer to that of other system pipelines, it can also be understood that the inner diameter of the first pipeline portion 11 is equal to that of the second pipeline portion 12, the inner diameter of the first pipeline portion is equal to that of the third pipeline portion, the outer wall portion of the main body positioning portion 21 is in abutting fit or clearance fit with the inner wall portion of the first pipeline portion 11, and the limit fit of the filtering component 2 and the first pipeline portion 11 can be realized, where "equal" includes cases close to or equal to the allowable work difference, and the like.

Referring to fig. 3-4, the pipeline assembly 1 of the present embodiment further includes a first transition section 13, the first transition section 13 integrally connects the first pipeline portion 11 and the second pipeline portion 12, the net member 22 does not extend into the second pipeline portion 12, that is, the length of the filter element 2 is smaller than that of the first pipeline portion, the filter element is disposed and installed by making full use of the length of the pipeline, and at the same time, axial movement of the filter element 2 under the impact of a refrigerant is reduced, and an acting force of the net member 22 against an inner wall of the pipeline assembly is reduced, so that deformation and damage possibly caused by mechanical collision of the net member are reduced.

The pipeline assembly 1 further comprises a third pipeline part 14 and a second transition section 15, the second transition section 15 is integrally connected with the first pipeline part 11 and the third pipeline part 14, the inner diameter of the first pipeline part 11 is larger than that of the third pipeline part 14, the third pipeline part 14 is used as the pipe wall part opposite to the second pipeline part, and the outer wall part of the main body positioning part 21 is in butt fit or clearance fit with the inner wall part of the first pipeline part 11; the third pipeline part 14 is welded and fixed with the inlet part and/or the outlet part of the valve part, so that the pipeline assembly integrated with the filtering part is connected into the refrigerating system; the first end of the first pipeline part 11 is integrally connected with the first end of the second pipeline part 12, the second end of the first pipeline part 11 is integrally connected with the first end of the third pipeline part 12, and the pipe fitting part of the pipeline assembly is integrally processed and manufactured through an original pipe fitting, so that the structure is simple.

Referring to fig. 6 and 7, the filtering portion 222 includes a filtering bottom wall 2221, an outer side of the filtering bottom wall faces the second pipeline portion 12, an inner side of the filtering bottom wall faces the third pipeline portion 13, a radial dimension of the filtering bottom wall 2221 is smaller than a diameter of the first pipeline portion 11, and the filtering bottom wall is mainly located at a center of the pipeline passage, so that the filtering bottom wall faces the refrigerant towards the net member, and the refrigerant mainly passes through the filtering bottom wall, so as to perform filtering without increasing fluid resistance too much. The filter part 222 further includes a filter side wall 2222, the filter side wall 2222 and the filter bottom wall 2221 are integrally formed, the filter side wall 2222 extends from the fixing part 221 of the net member toward the first end of the first pipeline part 11, the main body positioning part 221 is in abutting fit with the second end of the first pipeline part 11, the second end 142 of the third pipeline part 14 is welded and fixed with the inlet part and/or the outlet part of the valve member, the net member includes a cylindrical filter structure, and the filter side wall is substantially along the fluid direction, so that the impact of the refrigerant flowing through the pipeline assembly on the net member can be reduced during filtering, and the deformation probability of the net member can be reduced.

The main body positioning part 21 of the filter element 2 comprises a first side wall 211 positioned on one side of the fixing part 221 and a second side wall 212 positioned on the other side of the fixing part, at least part of the fixing part 221 is positioned in a gap 210 between the first side wall 211 and the second side wall 212, the first side wall 211 and/or the second side wall 212 is abutted against the fixing part 221, and is clamped on the net fixing part 221 through at least one of the first side wall and the second side wall, and the fixing part 221 of the net can be limited by adopting a non-welding mode, so that the net 22 is prevented from being separated from the main body positioning part 21.

The gap 210 is formed between the radial outer side of the first sidewall 211 and the radial inner side of the second sidewall 212, the channel 200 formed on the inner peripheral side of the first sidewall 211 is communicated with the pipeline channel of the third pipeline part 14, the outer wall of the second sidewall 212 is in abutting fit with the inner wall of the first pipeline part 11, the first sidewall 211 is blocked on the inner peripheral side of the fixing part 221 to prevent the net 22 from turning up and warping inward and reduce the interference to the refrigerant fluid, the second wall 212 is blocked on the outer periphery of the net to prevent the net 22 from turning up and warping outward, so that the second wall 212 is tightly fitted with the inner wall of the first pipeline part 11 and is in abutting fit with the inner wall of the first pipeline part 11 through the second wall 212, the inner wall part of the first pipeline part 11 clamps and limits the filtering part 2 in the pipe body of the pipeline component, the structure is relatively simple, it is no longer possible to provide the valves or heat exchangers or compressors of the refrigeration system with separate filters.

In this embodiment, the mesh 22 at least includes a metal mesh, which may be made of metal mesh or metal cloth with holes, and is made into a pocket shape, and more specifically, the metal mesh of the mesh may be a stainless steel mesh, and the metal mesh has a certain wire diameter and mesh holes, and the same metal mesh may have the same wire diameter or mesh hole diameter, or different wire diameter sizes, and different mesh hole sizes, and the wire diameter and mesh hole size of the present scheme may be specifically in the range of 70-250 meshes, such as 80-190 meshes or 75-200 meshes, so as to achieve the filtering effect and prevent the mesh holes from being too small to increase the resistance of the refrigerant passing through the filtering portion of the mesh, and the impurities in the medium may be filtered or even adsorbed by the mesh when passing through the filtering portion 222 of the mesh, and reduce the impurities contained in the fluid after the filtering portion.

Referring to fig. 3-9, the present disclosure further provides a method for manufacturing the valve device 100, the method comprising the steps of:

preprocessing an original pipe fitting, and at least forming a first pipeline part to obtain a pipe fitting 10; as shown in fig. 8, a pre-processing is performed on an original pipe, wherein an expanding process or a reducing process is performed on one end of the original pipe, a part of the original pipe is deformed into a first pipe portion 11 or a second pipe portion 12, an inner diameter of the first pipe portion is larger than an inner diameter of the second pipe portion, and the first pipe portion 11 with the larger pipe inner diameter provides an opening for the filter component 2 to be installed; if the original pipe fitting is subjected to flaring processing, the flaring processed part forms a first pipeline part, and the non-flaring part forms a second pipeline part 12. If the original pipe fitting is subjected to diameter reduction treatment, a part subjected to diameter reduction treatment forms a second pipeline part 12, a part not subjected to diameter reduction forms a first pipeline part 11, and the inner diameter of the second pipeline part is smaller than that of the first pipeline part, so that the pipe fitting 10 is prepared; or in other embodiments, as shown in fig. 5, the original pipe fitting is not subjected to flaring or reducing treatment;

providing a filter component 2, forming a clamp piece and a net piece by the filter component, and assembling and limiting the clamp piece and the net piece; providing a filter element 2, as shown in particular in figures 6 and 7, having an external diameter greater than the internal diameter of the first pipe section 11;

pressing the filtering component 2 into the pipe fitting 10, limiting and matching the outer wall part of the pressed filtering component 2 with the inner wall part of the first pipeline part 11, specifically, abutting the outer wall part and the inner wall part in an interference fit manner or in a clearance fit manner, then limiting, preparing a pipeline assembly spare part, and processing again to obtain the pipeline assembly 1;

providing a preassembled valve component 1, wherein the valve component comprises an inlet part 101, and the inlet part 101 of the valve component is fixedly welded with the pipeline component 1; alternatively, a pre-assembled valve element is provided, the valve element comprising an inlet part 101 and an outlet part 102, at least two pipe assemblies are provided, wherein one pipe assembly 1 is welded to the inlet part 101 and the other pipe assembly 1' is welded to the outlet part 102 of the valve element.

Before the original pipe fitting is preprocessed, blanking the metal pipe to form the original pipe fitting, specifically, performing a flaring processing process on the original pipe fitting, extending into a flaring tool from one end of the original pipe fitting, such as a forming flaring die, putting blank into the forming die, filling liquid or gas with certain pressure, performing flaring processing, and forming a first transition section 13 while preprocessing the original pipe fitting to form a first pipeline part; the inside diameter of the first pipeline portion 11 formed by flaring is larger than the inside diameter of the second pipeline portion 12, and here, the cross-sectional shape of the pipeline portion 1 is explained, the cross-sectional shape of the pipeline portion 1 may be a ring shape, or other cross-sectional shapes such as a rectangle, etc., in this embodiment, the cross-sectional shape is a ring shape, and the diameter of the first pipeline portion 11 is smaller than or equal to the diameter of the main body positioning portion 21.

The above method for producing the filter element 2 comprises:

providing a metal blank, and performing forming treatment in a pressing forming mode to form a first wall part 211, a second wall part 212 and a connecting part 213, wherein the connecting part integrally connects the first wall part 211 and the second wall part 212, and a set gap 210 is formed between the first wall part and the second wall part through shaping, and the gap is convenient for inserting a metal mesh;

providing a metal mesh, preprocessing the metal mesh by a finishing or press forming mode, forming a fixing part 221 on one part, installing the fixing part into the gap 210, and forming a filter part 222 on the other part of the metal mesh, wherein the filter part 222 is exposed out of the first wall part and the second wall part;

an end portion of the first wall portion 211 is bent to form a closing section 214 that is confined outside the fixing portion 221, resulting in the clip member 20. The method for further manufacturing the filter element 2 comprises the following steps: providing a metal blank in a ring cake shape, wherein the pressing and forming mode comprises at least one of a stamping pressing mode, a hydraulic pressing mode or a pneumatic pressing mode, and forming the metal blank;

in the clamp 20 manufactured by the above method, the closing section 214 can guide the filter element 2 to press into the pipe 10, and the outer wall of the first wall 211 is tightly clamped with the inner wall of the first pipeline 11 to form an abutting fit; in addition, the main body positioning portion 21 provided by the band member 20, the first and second wall portions generally form a wall-clamping structure, especially, the first wall portion is slightly longer than the second wall portion to form the closing section 214, the fixing portion 221 radially inwardly clasps the net member to prevent the net member from separating from the main body positioning portion 21, from another point of view, the minimum inner diameter of the distal end portion of the closing section 214 is smaller than the outer diameter of the fixing portion 221, and the distal end portion of the closing section 214 abuts against the outer wall of the net member, so that the fixing portion 221 cannot be separated from the net member through the closing section 214, and the net member 22 is thus fixed or limited to the main body positioning portion. It should be noted that the limiting arrangement here is a structure that allows the net member to slightly move relative to the main body positioning portion 21 on the premise that the net member 22 cannot be separated from the main body positioning portion 21, and completely clamps the net member relative to the main body positioning portion, so that the pulling force of the net member when being impacted by fluid such as refrigerant can be reduced, and the possibility that the net member is damaged due to external force can be reduced.

In connection with the above steps, the method of pressing the filter element 2 into the tube 10 further includes: during pressing of the filter element 2 into the tube 10 by means of a press-fitting jig such as a pneumatic cylinder, the closing-in section 214 can guide the filter element to be pressed into the tube 10 until the filter element 2 is no longer pressed in until a predetermined distance from the first transition section 13 is maintained.

Specifically, in the press fitting step of pressing the filter element 2 into the pipe 10, the assembled filter element 2 is press fitted into the first pipeline portion 11, specifically, the method is that the pipe 10 is arranged on a positioning tool, the direction of the first pipeline portion 11 is ensured to be upward, the main body positioning portion 21 of the filter element 2 is press fitted downward into the first pipeline portion 11, and the filter element 2 is limited and arranged in the first pipeline portion 11; when the filter element 2 is press-fitted into the first pipe section 11, it is ensured that the net member 22 of the filter element 2 is arranged close to the first transition section 13, and the space of the first pipe section is utilized to install the filter element. In the press fitting process, the wall thickness of the first pipeline part may be expanded and thinned due to the squeezing of the filtering component 2, and it is required to ensure that the wall thickness of the first pipeline part is within a proper range after the flaring process, where the proper range means that the inner wall of the first pipeline part cannot be burst after the fixed setting or the limited setting of the filtering component 2 and the inner wall of the first pipeline part is completed.

Further, the method for processing the prepared parts of the pipeline assembly again to obtain the pipeline assembly 1 comprises the following steps of;

the pipeline component preparation part is subjected to necking treatment at a position A close to the position A after press mounting of the clamp part 20, a third pipeline part 14 which is radially shrunk relative to the first pipeline part is formed, after the necking treatment, the pipeline component 1 is further provided with a second transition section 15, the second transition section 15 is located on one side of the clamp part 20 and can limit the clamp part 20 to move or rock along the inner wall of the pipe, and the third pipeline part 14 and the second pipeline part 12 are respectively arranged at two ends of the first pipeline part 11. Specifically, necking is performed at one end, far away from the second pipeline part 12, of the first pipeline part 11 in modes of spinning necking and the like, the influence on the strength of the pipe wall is small in the spinning process, and the pipe diameter is reduced in a mode of forming a necking die and tapping; second changeover portion 15 is close to setting up or the contact setting with main part location portion 21, and generally, filter element 2 is consequently fixed or spacing to be set up between first changeover portion 13 and second changeover portion 15 for the space of first pipeline portion of filter element make full use of, and in addition, the inner wall of second changeover portion 15 can be radial and the axial provide spacingly for main part location portion 21, prevents that filter element 2 from towards third pipeline portion drunkenness.

Further, the manufacturing method of the valve device 100 further includes: forming a first positioning portion 141 by dotting or forming a pressure groove on the inner wall of the third pipe portion 14 outwardly as shown in fig. 3, or by dotting or forming a pressure groove on the outer wall of the third pipe portion inwardly as shown in fig. 4 and 5; of course, the first positioning portion may be formed at the inlet portion 101 and/or the outlet portion 102 which are butt-welded in the above-described manner, and the inlet portion 101 will be described as an example;

from the structure, the first positioning portion 141 is close to one end of the second transition section 15, so that the pipeline assembly 10 can be conveniently positioned when being butted with a pipeline requiring a filtering component, such as a valve, and the like, and is beneficial to pre-limiting before welding, and a welding ring can be conveniently sleeved or solder can be conveniently placed from a pipe orifice of the third pipeline portion until the welding ring and the like are close to the position of the first positioning portion. When the outer diameter of the inlet portion of the pipeline assembly 10 to be welded is smaller than the inner diameter of the third pipeline portion 14, the first positioning portion 141 is designed to be inwardly dotted or pressed with a groove or the like to form a protrusion, the number of dotted points is greater than or equal to 1, for example, two or three or four dotted points are dotted, and the symmetrical distribution of the protruding points is more favorable for the insertion alignment of two pipe portions to be butted; when the outer diameter of the inlet portion is smaller than the inner diameter of the third pipeline portion 14, the inlet portion can be at least partially inserted into the third pipeline portion 14 along the axial direction of the third pipeline portion 14 and abut against the first positioning portion 141, which facilitates positioning during welding.

It should be noted that: although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the above-mentioned embodiments may be modified or substituted by equivalents, and all modifications and improvements that do not depart from the spirit and scope of the present invention are intended to be covered by the present invention.