Filter and manufacturing method

Abstract

The filter comprises a filter body and a filter assembly, the filter assembly is located in the filter body, the filter assembly comprises a net part, a first part and a second part, the net part comprises a net side wall and a net bottom, the net side wall comprises a net end part, and the net end part comprises a first part and a second part. At least part of the net end and the first component are fixedly arranged or arranged in a limiting mode, the second component comprises a second peripheral wall and a connecting part, the first component is fixedly connected with the connecting part, the second peripheral wall extends in the axial direction of the filter, and the free end of the second peripheral wall is provided with a flanging structure in the axial direction of the filter. In the radial direction of the filter, the flanging structure is folded towards the direction far away from the net end part, and at least part of the flanging structure is tightly matched with the inner wall of the filter body. By arranging the flanging structure on the second peripheral wall of the second part, the filter assembly is better positioned in the filter body blank, so that pre-positioning can be realized, subsequent processing, transportation and other procedures are facilitated, close fit between the filter assembly and the inner wall of the filter body can be facilitated, and the filter assembly is more convenient to use. The stability of the filter assembly in the filter body is effectively improved, and the problem of noise caused by shaking of the filter assembly in the use process of the filter is effectively solved.

Description

[0001] This application is based on the divisional application of the original invention patent application number 2018101492711, the application date 2018-02-13, and the application name “Filter component, filter and manufacturing method”. [Technical field]

[0002] The invention relates to the technical field of refrigeration, and in particular to a filter and a manufacturing method thereof. [Background technology]

[0003] The filter can filter out some impurities, thereby reducing the possibility of clogging of the system or device using the filter. Filters are generally filtered using filter meshes. However, during the filtering process, the filter mesh may be damaged or partially detached. [Summary of the invention]

[0004] The object of the present invention is to provide a filter for a refrigeration system, and the specific scheme is as follows:

[0005] A filter is used in a refrigeration system. The filter includes a body and a filter assembly. The filter assembly is located in the body. The filter assembly includes a mesh portion, a first component and a second component. The mesh portion includes a mesh side wall and a mesh bottom. The mesh side wall includes a mesh end portion. At least a portion of the mesh end portion is fixedly arranged or limitedly arranged with the first component. The second component includes a second peripheral wall and a connecting portion. The first component is fixedly connected to the connecting portion. The second peripheral wall extends along the axial direction of the filter. Along the axial direction of the filter, the free end of the second peripheral wall has a flange structure. Along the radial direction of the filter, the flange structure is folded in a direction away from the mesh end portion. At least a portion of the flange structure is tightly matched with the inner wall of the body.

[0006] When preparing the filter, the filter assembly needs to be pressed into the body of the device first. The filter provided in the present application arranges a flange structure on the second peripheral wall of the second part of the filter assembly to better position the filter assembly in the body of the device. This not only achieves pre-positioning and facilitates subsequent processing and transportation, but also helps to make the filter assembly and the inner wall of the device fit tightly, effectively improving the stability of the filter assembly in the device and reducing the noise problem caused by the shaking of the filter assembly during use.

[0007] The present invention also provides a method for preparing a filter, and the specific scheme is as follows:

[0008] Providing an inner support assembly, a mesh portion, a first component, and a second component embryo;

[0009] Punching the second component blank to form the second component with a flanging structure at the free end;

[0010] The first component is welded to the net portion to form a first member;

[0011] The inner support assembly is welded to the first component to form a second component;

[0012] The second component is welded to the second part to form a filter assembly.

[0013] The filter made by this method is provided with a flange structure at the end of the second component, and the flange structure can better position the filter component in the body embryo, which can not only achieve pre-positioning and facilitate subsequent processing and transportation, but also help to ensure a tight fit between the filter component and the inner wall of the body, effectively improving the stability of the filter component in the body and reducing the noise problem caused by the shaking of the filter component during use.

Brief Description of the Drawings

[0014] Figure 1 is a schematic diagram of a first embodiment of a filter;

[0015] Figure 2 yes Figure 1 The filter is shown in a cross-sectional view along the AA direction;

[0016] Figure 3 yes Figure 2 A partial enlarged schematic diagram of the filter M portion shown;

[0017] Figure 4 yes Figure 1 A schematic diagram of an embodiment of the mesh portion of the filter shown (the mesh portion in the figure is a schematic diagram of the wire diameter and mesh size of the filter mesh);

[0018] Figure 5 yes Figure 1 A schematic diagram of a first embodiment of a first component of the filter shown;

[0019] Figure 6 yes Figure 1 Schematic diagrams of second and third embodiments of the first component of the filter;

[0020] Figure 7 is a schematic diagram of a fourth embodiment of the first component and related parts of the fixing of the end of the net portion;

[0021] Figure 8 yes Figure 1 A schematic diagram of one implementation of the second component of the illustrated embodiment;

[0022] Fig. 9 is a cross-sectional schematic diagram of an implementation of the first component and the second component of the first embodiment;

[0023] Fig.10 is a schematic diagram of another embodiment of a clamping member and related parts for fixing the end of the net portion;

[0024] Fig.11 is a schematic diagram of one embodiment of a support frame;

[0025] Fig.12 is a schematic diagram of another embodiment of a support frame;

[0026] Fig.13 yes Figure 2 A schematic diagram of a portion of the filter first component and the support assembly;

[0027] Fig.14 is a schematic diagram of another embodiment of a filter assembly (without a mesh portion);

[0028] Fig.15 yes Fig.14 A schematic cross-sectional view of the filter assembly (without the mesh portion) along the BB direction;

[0029] Fig.16 yes Fig.15 A partial enlarged schematic diagram of the middle Q part;

[0030] Fig.17 yes Fig.16 A partial enlarged schematic diagram of the relevant part of the mesh section;

[0031] Fig.18 yes Fig.14 A schematic diagram of the first component of the filter assembly and the support assembly shown;

[0032] Fig.19 yes Fig.14 A schematic diagram of one embodiment of a first component of the filter assembly is shown;

[0033] Fig. 20 yes Fig.19 The schematic front and cross-sectional views of the first component shown;

[0034] Fig.21 is a schematic diagram of a second embodiment of the filter;

[0035] Fig. 22 yes Fig.21 The filter is shown in a cross-sectional view along the DD direction;

[0036] Fig.23 yes Fig.21 Schematic diagram of the copper connector of the filter shown;

[0037] Fig.24 yes Fig. 22 A partial enlarged schematic diagram of part P;

[0038] Fig.25 Can be used for Fig.14 A schematic diagram of the mesh portion of the filter assembly shown;

[0039] Fig.26 is a schematic diagram of another embodiment of the second component;

[0040] Fig. 27 yes Fig. 22 A schematic diagram of the filter assembly (without the mesh portion) of the filter shown;

[0041] Fig.28 yes Fig. 27 Schematic diagram of the filter assembly (with mesh portion) shown;

[0042] Fig.29 yes Fig.28 A schematic diagram of the filter assembly after being fixed and welded;

[0043] Fig.30 is a schematic diagram of yet another embodiment of a filter assembly;

[0044] Fig.31 is a schematic diagram of yet another embodiment of a filter assembly. [Specific implementation method]

[0045] The following is further described in conjunction with the accompanying drawings and specific embodiments:

[0046] Please refer to Figure 1-13 , Figure 27-Figure 30The filter 100 includes a filter assembly 1 and a body 2. The filter assembly 1 is located in the body 2. The filter assembly 1 and the inner wall of the body 2 are fixed or limited. The filter assembly 1 can play a filtering function in the filter. The filter assembly 1 at least includes a mesh portion 11, a first component 12 and a support assembly 13'. The mesh portion 11 and the first component 12 are fixedly arranged or limitedly arranged. The support assembly may include an inner support assembly or an outer support assembly. The support assembly may be arranged in various forms, such as using a support frame 13, wherein most of the support frame 13 is located in the mesh cavity or the support frame supports the mesh portion to limit the inward deformation of the mesh portion; or the support assembly at least includes an outer frame, wherein most of the outer frame is located outside the mesh cavity or the outer frame is sleeved on the mesh portion 11 to limit the outward deformation of the mesh portion, thereby better controlling the deformation amount of the mesh portion; that is, at least part of the mesh portion is located in the mesh cavity and / or the support assembly is at least partly located outside the mesh cavity. The support assembly 13' may include an inner support assembly 13e and / or an outer support assembly 13f. The inner support assembly 13e includes at least one support frame, wherein the support frame of the inner support assembly 13e is at least mostly located in the mesh cavity, and the outer support assembly 13f is at least mostly located outside the mesh cavity. The support frame can be made of a narrow metal plate through bending. The width of the support frame can generally be between 2-6mm, and the thickness can be between 0.3-0.8mm; it is bent or stamped into a shape that matches the shape of the mesh. For example, when the mesh surface is roughly truncated cone, the support frame matches the shape of the truncated cone cross section. When the mesh is roughly cylindrical, the support frame matches the shape of the cylindrical cross section. When the mesh is roughly hemispherical, the support frame matches the shape of the hemispherical cross section. One side of the width of the support frame faces the mesh. Since the support frame has a certain width, one side of its width can be used to support the mesh when the mesh is deformed by force. In this way, the force-bearing surface is relatively large, which can more effectively limit the deformation of the mesh. Here, the support frame is a non-enclosed frame structure, which roughly includes three sides, and the other side is fixed to other components by the two ends of the support frame so that the frame has a better supporting effect.

[0047] like Fig.11 , Fig.12As shown, the support frame 13 can be an integral structure formed by a metal plate or a narrow metal plate, and the support frame 13 includes a first side wall 131, a second side wall 132 and a bottom wall 133. The support frame 13 can also have a transition portion 134 between the first side wall and the bottom wall and a transition portion 135 between the second side wall and the bottom wall, wherein the first side wall 131 includes the transition portion 134, and the first side wall 131 and the bottom wall 133 are transitionally arranged through the transition portion 134, and the second side wall 132 includes the transition portion 135, and the second side wall 132 and the bottom wall 133 are transitionally arranged through the transition portion 135. Specifically, the transition portion 134 can be formed by bending the first side wall 131 to the bottom wall 133, or the transition portion 134 can be formed by bending the bottom wall 133 to the first side wall 131, and similarly, the transition portion 135 can be formed by bending the second side wall 132 to the bottom wall 133, or the transition portion 135 can be formed by bending the bottom wall 133 to the second side wall 132. The first side wall 131 and the second side wall 132 are arranged to extend approximately along the axial direction of the side wall of the net, and the bottom wall 133 is arranged to extend approximately along the radial direction of the bottom 113 of the net, or when the bottom wall of the net portion has an arc, the bottom wall 133 can have a certain arc to match the shape of the net portion. The first side wall 131 includes a first end 136, 136a, and the second side wall 132 includes a second end 137, 137a. The first end and the second end can be used to fix with the first component 12 and / or the second component. Specifically, the first end and the second end can be respectively welded with the first component 12, and more specifically, the first end and the second end are respectively arranged with the first component by spot welding. Fig.11 The first end 136 includes a first flange portion 136', the first side wall 131 may also include a transition portion 138, the second end 137 includes a second flange portion 137', and the second side wall 132 also includes a transition portion 139 connected to the second flange portion 137', the first flange portion 136' and the second flange portion 137' are roughly extended along the radial direction of the net side wall, the first flange portion 136' is connected to the axial part of the first side wall 131 through the transition portion 138 or is integrated, that is, in the process of integrally forming the support frame 13, the transition portion can be formed by bending the plate, the first flange portion 136' and the second flange portion 137' are fixedly arranged with the first component 12 or the second component, so that the structure of the support frame is more stable and reliable when in use, specifically, the first flange portion 136' and the second flange portion 137' can be welded to the first component 12, more specifically, the first flange portion 136' and the second flange portion 137' are spot welded to the first component 12. exist Figure 3 , Fig.11In the embodiment shown, the first flange portion 136' and the second flange portion 137' are respectively welded to the first plate-like portion 121, such as spot welding, and the support frame 13 of the internal support component 13e is mostly located in the mesh cavity. The shape of the support frame 13 cooperates with the shape of the mesh portion and has the function of supporting the mesh portion 11. The bottom wall of the support frame is located in the mesh cavity and is relatively close to the bottom of the mesh or in contact with the bottom of the mesh. The side walls of the support frame are relatively close to the side walls of the mesh or in contact with the side walls of the mesh. The support frame 13 can be an integral structure or a non-integrated structure. When the support frame 13 is an integral structure, the support frame 13 can be formed by bending a strip of metal sheet or stamping a metal sheet. At this time, the first side wall 131, the second side wall 132 and the bottom wall 133 are roughly flat. In the present technical solution, the cross-sectional shapes of the first side wall, the second side wall and the bottom wall are not limited.

[0048] When the support component includes an external support component, the support component includes at least one outer frame, which is at least partially located outside the mesh cavity. The outer frame includes side walls and a bottom wall. The bottom wall of the outer frame is located outside the mesh cavity and relatively close to the bottom of the mesh or in contact with the bottom of the mesh, and the side walls of the outer frame are at least mostly located outside the mesh cavity and relatively close to the side walls of the mesh or in contact with the side walls of the mesh.

[0049] Please refer to Figure 1-Figure 13 , Figure 27-Figure 30 The filter 100 includes a filter assembly 1 and a body 2. The filter assembly 1 includes a mesh portion 11, a first component 12, a support frame 13 and a second component 14. The mesh portion 11 is fixedly arranged or limitedly arranged with the first component 12, or the mesh portion 11 for filtering is fixedly arranged or limitedly arranged with the first component 12 and the second component 14. The mesh portion 11 is a filter mesh cloth that is processed to form a roughly truncated cone, cylindrical, arc-shaped or hemispherical structure with one end open. The open end of the mesh portion 11, i.e., the mesh end portion 1121, is fixed by the first component 12 or the first component 12 and the second component 14 and cooperates with the inner wall of the body, thereby playing a filtering role. The first component 12 and the second component 14 can play a role in fixing the mesh portion 11, and the second component 14 can also be fixedly arranged or limitedly arranged with the inner wall of the body 2. The support frame 13 supports and protects the mesh portion 11.

[0050] The net portion 11 includes a net cavity 111, a filter net side portion 112 and a net bottom portion 113. The net portion 11 is in a cylindrical shape with one end open, or the net portion 11 is in a substantially cylindrical structure with one end open, such as Figure 4 , the interception area of ​​the mesh cavity gradually increases from the opening of the mesh portion 11 to the bottom of the mesh, or, the interception area of ​​the mesh cavity gradually decreases from the opening of the mesh portion 11 to the bottom of the mesh, or, the interception area of ​​the mesh cavity does not change substantially from the opening of the mesh portion 11 to the bottom of the mesh (e.g. Fig. 22As shown). Specifically, the side wall 112 of the net is a part of the wall portion forming the net cavity 111, and the bottom 113 of the net is another part of the wall portion forming the net cavity. The net portion 11 includes a net fixing portion 114, and the net fixing portion 114 includes a fixing portion located at the side wall of the net and a fixing portion located at the bottom of the net. The net fixing portion located at the side wall of the net extends roughly along the longitudinal direction of the net cavity. The net fixing portion 114 has at least two sides of filter nets, and at least two layers of filter nets are fixed by welding. Specifically, the welding method can be spot welding or other welding methods. As an embodiment, the bottom 113 of the net at least partially includes two or more layers of filter nets, and the two or more layers of filter nets are fixed by welding. The bottom 113 of the net is formed by folding this part of the mesh cloth and fixing the two or more layers by welding. Specifically, the two or more layers of filter nets can be fixed by spot welding. Of course, a part of the bottom 113 of the net can only include one layer of filter net. The filter mentioned here and in the full text has a certain wire diameter and mesh size, and the material can be made of metal materials such as stainless steel or copper, etc. Of course, the filter can have different wire diameters and different mesh sizes. The side wall 111 also includes a mesh end 1121, and the mesh portion 11 is fixedly arranged with the first component 12 through the mesh end, or the mesh portion 11 is fixedly arranged with the first component 12 and the second component 14 through the mesh end 1121. Specifically, the mesh end 1121 is obtained by flanging the side wall 111, or the mesh end 1121 is folded along the radial direction of the mesh cavity. As another embodiment, the mesh portion is a cylindrical shape with an open end formed by the filter mesh, the side wall of the mesh may not have a mesh fixing portion, and the bottom of the mesh is not limited to at least part of two or more layers of filter mesh.

[0051] The filter assembly 1 comprises a first component 12, such as Figure 5The first component 12 shown can be an integral structure, and the first component 12 includes a first plate-like portion 121, and the first plate-like portion 121 is fixed or limitedly arranged with the mesh portion 1, and the fixed arrangement is such as the first plate-like portion 121 being welded with the mesh portion 1, and the limited arrangement is such as the first plate-like portion 121 and the mesh portion 1 being limitedly arranged by punching convex points or concave points. The first component 12 of this embodiment includes a first plate-like portion 121, a first peripheral wall 122, and the first plate-like portion 121 includes a first turning portion 123, and the first plate-like portion is connected to the first peripheral wall 122 through the first turning portion 123, the first plate-like portion 121 is extended roughly along the radial direction of the mesh cavity, and the first peripheral wall 122 is extended roughly along the axial direction of the mesh cavity, and the first plate-like portion 121 is transitionally arranged with the first peripheral wall 122 through the first turning portion 123. More specifically, the first peripheral wall can be formed when the first plate-shaped portion 121 is bent, or the first turning portion 123 can be formed when the first peripheral wall 121 is bent toward the first plate-shaped portion 121, or the first component is formed by stamping a plate. The extension surface of the first plate-shaped portion 121 and the extension surface of the first peripheral wall 122 have an angle. Specifically, the extension surface of the first plate-shaped portion 121 and the extension surface of the first peripheral wall 122 can be substantially vertically arranged, and the substantially vertical arrangement here is ±15 degrees. Figure 2 In the embodiment shown, the first plate-shaped portion 121 and the net end portion 1121 are welded, specifically, the first plate-shaped portion 121 and the net end portion 1121 are fixed by spot welding, the first peripheral wall and the first turning portion are not necessary for the first component, and the first peripheral wall helps to better limit the position with the second component 14. The plate-shaped portion herein refers to a structure formed by processing a plate material that cooperates with the net end portion of the net portion, and is not limited to a flat plate, but can also be a variety of three-dimensional plate-shaped structures such as an arc or annular shape.

[0052] The first plate-shaped portion 121 includes a first side portion 1211 and a second side portion 1212, wherein the first side portion 1211 faces the net bottom 113, and the second side portion 1212 is relatively away from the net bottom 113, and the first side portion 1211 and the second side portion 1212 are arranged opposite to each other. As an embodiment, the first side portion 1211 can be arranged in contact with the filter net. As an embodiment, the first component 12 and the second component 14 jointly press the net end portion 1121, or the net end portion 1121 is located between the first component 12 and the second component 14 and is fixed by the first component and the second component. Specifically, it can be further fixed by welding, such as spot welding at multiple positions, or, along the axial direction of the net cavity, the net end portion is located between the first component and the second component, and the first component, the net end portion and the second end portion are welded and arranged; the limit setting can be, for example, convex points or concave points are set on the first plate-shaped portion and the net end portion. The first plate-shaped portion 121 may be substantially annular, so that the first component may not need the first peripheral wall and the first turning portion; as other embodiments, the first plate-shaped portion may have at least one notch or other shapes, such as Figure 6The first component 12a includes a notch 126, and the first plate-like portion 121a is roughly an annular structure with one or more notches; the first component 12b may also include three or more notches 126, and the first plate-like portion 121b is roughly an annular structure with three or more notches, and the first plate-like portion 121b is integrated through the first turning portion 123 and the first peripheral wall 122.

[0053] Please refer to Figure 7 In one embodiment, the first component may further include a third peripheral wall 124 and a third turning portion 125. The third peripheral wall 124 is substantially extended along the axial direction of the mesh cavity. The first plate-shaped portion 121 includes the third turning portion 125. The third peripheral wall 124 and the first plate-shaped portion 121 are transitionally arranged through the third turning portion 125. The third peripheral wall 124 may be located inside the mesh cavity. As another embodiment, the third peripheral wall 124 may also be located outside the mesh cavity. As an embodiment, the third peripheral wall 124 may be used to fix with the support frame. In this case, the support frame may be Fig.12 In the illustrated embodiment, the end of the support frame may not be provided with the second flange portion, specifically, the third peripheral wall 124 and the support frame 13 are welded.

[0054] As a specific embodiment, the support assembly of the filter assembly 1 includes inner support assemblies 13e, 13e', the inner support assembly 13e includes at least one support frame 13, 13a, most of the support frame of the inner support assembly is located on the inner side of the mesh side wall, the bottom wall of the support frame of the inner support assembly 13e and at least most of the side wall are located in the mesh cavity, the support frames 13, 13a can be used to support the mesh portion 11, and when the working medium flows through the filter, the support frame 13 is helpful in reducing the impact force of the working medium on the mesh portion 11. The support frame can be fixedly set or limited with the first component, and the support frame can also be fixedly set or limited with the second component. The fixed setting or limiting setting here and in the whole text can include direct fixing setting, indirect fixing setting, direct limiting setting, and indirect limiting setting, among which, the direct fixing setting is such as the welding setting of the support frame and the first component; the indirect fixing setting is such as the welding setting of the support frame and the second component, and the second component is fixed with the first component, and it can be said that the support frame is fixed with the first component; the direct limiting setting is such as the first component limiting the support frame through its own limiting structure; the indirect limiting setting can be the limiting structure formed by the first component and the second component to limit the support frame, or the limiting structure of the second component itself forms a limiting setting for the support frame, and the first component is fixed or limited with the second component.

[0055] Please combine Fig.11 , Figure 3The support frame 13 is an integrally formed structure, and the support frame 13 is located between the first component and the second component. The support frame 13 is fixed to the first component and the second component by welding, more specifically, by spot welding. The support frame 13 is fixed or limited to the first component and / or the second component, so that when the working medium flows through, the support frame 13 can avoid the mesh 11 from being severely deformed due to a large impact as much as possible, thereby reducing the possibility of damage to the mesh. If the support frame 13 is not fixed to the first component 12 or the second component, when the working medium flows through, under the impact of the working medium, the support frame may shake or vibrate to a certain extent or produce a certain position deviation under the influence of the mesh, which may affect the mesh and cause the mesh to be damaged. At the same time, if the filter component is not provided with a support frame, the mesh may be deformed after use, resulting in partial blockage of the mesh holes. When some of the mesh holes are blocked, the working medium and the blocking material exert a greater force on the mesh, increasing the possibility of damage to the mesh. When the filter component is provided with a support frame, the support frame can control the deformation of the mesh within a certain range and share part of the force exerted on the mesh by the working medium and / or the blockage, thereby relatively reducing the force exerted on the mesh and reducing the possibility of damage to the mesh.

[0056] Please refer to Fig.12 The first end 136a of the support frame does not include the first flange portion 136', and the second end 137a does not include the second flange portion 137', which can be used Figure 7 In the filter assembly shown, the first component 12 also includes a third peripheral wall 124 , and the first end 136 and the second end 137 are respectively welded to the third peripheral wall 124 .

[0057] Fig.13 The inner support assembly 13e'' shown can be used to Figure 2The filter shown in the figure, the inner support assembly 13e"' includes a first support frame 13a"' and a second support frame 13b"', the first support frame 13a"' and the second support frame 13b"' are relatively fixedly arranged or fixedly arranged by the first component 12, specifically, the bottom wall of the first support frame 13a"' and the bottom wall of the second support frame 13b"' can be fixed by welding, more specifically, it is a spot welding arrangement, the bottom wall of the first support frame 13a"' and the bottom wall of the second support frame 13b"' are cross-arranged, along the axial direction of the mesh cavity, the bottom wall of the first support frame 13a"' is farther away from the mesh bottom 113"' than the bottom wall of the second support frame 13b"', specifically, the bottom wall of the first support frame 13a"' and the bottom wall of the second support frame 13b"' ”' is arranged approximately vertically, or the length direction of the bottom wall of the first support frame 13a”' is arranged approximately vertically with the length direction of the bottom wall of the second support frame 13b”'. The approximately vertical arrangement here and in the whole text means that the error is within ±15 degrees, or it can be said that the bottom wall of the first support frame 13a”' and the bottom wall of the second support frame 13b have an overlapping portion when projected along the axial direction of the net side wall. As an embodiment, at least one side wall of the first support frame 13a”’ and the second support frame 13b”’ is arranged along the net fixing portion 114, or at least one side wall is arranged corresponding to the net fixing portion 114, or at least one side wall is located on the relatively outer side of the net fixing portion 114. In this way, the flow resistance of the net portion can be reduced.

[0058] As another embodiment, Fig.30 The filter assembly may include only an outer support assembly without an inner support assembly, or the filter assembly may further include an outer support assembly, wherein the outer support assembly includes at least one support frame, and the bottom wall of the support frame of the outer support assembly is located outside the mesh cavity. Fig.30 , Fig.30 Another embodiment of the filter assembly is shown. The filter assembly includes an outer support assembly 13f'', and the outer support assembly 13f'' includes a first outer frame 13c'' and a second outer frame 13d''. The first outer frame and the second outer frame of the outer support assembly are fixed to the second plate-like portion of the second component by spot welding. The end of the mesh portion is located between the first plate-like portion of the first component and the second plate-like portion of the second component. The first plate-like portion of the first component, the end of the mesh portion, and the second plate-like portion of the second component are fixed by spot welding, and the first plate-like portion and the second plate-like portion are arranged roughly parallel. When the filter assembly includes only an outer support assembly, the filter assembly is more suitable for use as a filter in a system in which the working medium flows unidirectionally. When the filter assembly includes only an inner support assembly, the filter assembly can be used in a system in which the working medium flows bidirectionally.

[0059] In addition, if Fig.15 , Fig. 22 , Figure 27-29 , Fig.31The filter assembly includes an outer support assembly 13c, 13f' and an inner support assembly 13e, 13e'. The outer support assembly 13f' includes a first outer frame 13c' and a second outer frame 13d'. The inner support assembly 13e' includes a first support frame 13a, 13a' and a second support frame 13b, 13b'. The first outer frame 13c, 13c' and the second outer frame 13d, 13d' are fixedly arranged. Specifically, the first outer frame and the second outer frame are welded; the first support frame 13a, 13a' and the second support frame 13b, 13b' are fixedly arranged. Specifically, the first support frame and the second support frame are welded. The outer support assembly is fixedly arranged with the second component, and the inner support assembly is fixedly arranged with the first component. Please refer to Fig.29 , Fig.29 A schematic diagram of a specific embodiment of a filter assembly is shown. The filter assembly has a plurality of welding points 4, wherein the first component and the mesh portion are fixed by spot welding, the first support frame 13a' is fixed to the first plate-shaped portion of the first component by spot welding, and the second support frame 13b' is fixed to the first plate-shaped portion of the first component by spot welding; the first outer frame of the outer support assembly is fixed to the second plate-shaped portion of the second component by spot welding, and the second outer frame of the outer support assembly is fixed to the second plate-shaped portion of the second component by spot welding; the end of the mesh portion is located between the first plate-shaped portion of the first component and the second plate-shaped portion of the second component, and the first plate-shaped portion of the first component, the end of the mesh portion, and the second plate-shaped portion of the second component are fixed by spot welding.

[0060] Please refer to Figure 8 The filter assembly 1 includes a second component 14, and the second component 14 is fixedly arranged or limitedly arranged with the first component 12. Specifically, the second component 14 and the first component 12 can be arranged by welding. The filter assembly 1 can be fixedly arranged or limitedly arranged with the body 2 through the second component 14. The filter assembly 1 is fixedly arranged in the body 2 or the filter assembly 1 can be limitedly arranged in the body 2 through the second component 14. It can also be said that the way to achieve the fixed arrangement or limited arrangement of the filter assembly 1 and the body 2 is: the second component 14 is fixedly arranged or limitedly arranged with the body 2. The second component 14 includes a second plate-shaped portion 141 and a second peripheral wall 142. The second plate-shaped portion 141 includes a turning portion 143. The second plate-shaped portion 141 and the second peripheral wall are connected as a whole through the turning portion 143. The second plate-shaped portion 141 is substantially extended along the radial direction of the mesh portion, and the second peripheral wall 142 is substantially extended along the axial direction of the mesh portion. The second plate-shaped portion 141 includes a turning portion 143. The second plate-shaped portion 141 smoothly transitions with the second peripheral wall 142 through the turning portion 143. The second peripheral wall 142 can be used to fix or limit the device body. Fig. 9In the embodiment shown, the second peripheral wall 142 is located outside the first peripheral wall 122, and the second peripheral wall 142 can be used to limit the first peripheral wall 122, so as to facilitate welding of the first component and the second component, and the equivalent diameter of the second peripheral wall 142 is larger than the equivalent diameter of the first peripheral wall 122. The second plate-shaped portion 141 is fixed or limitedly arranged with the mesh portion 11, specifically, the side of the second plate-shaped portion 141 away from the mesh bottom 113 is welded to the mesh portion 11, and more specifically, the side of the second plate-shaped portion 141 away from the mesh bottom 113 is welded and fixed to the mesh end portion 1121. As an embodiment, the mesh end portion 1121 is located between the first plate-shaped portion 121 and the second plate-shaped portion 141, the first plate-shaped portion and the second plate-shaped portion are arranged approximately in parallel, the mesh portion 11, the first component 12 and the second component 13 are welded, and along the axial direction of the filter mesh, the second plate-shaped portion 141 is closer to the mesh bottom 113 than the mesh end portion 1121, and the mesh end portion 1121 is closer to the mesh bottom 113 than the first plate-shaped portion 121.

[0061] The filter component can also be other structures, such as Fig.10 The filter assembly also includes a clamping member, which can be fixedly arranged with the first component and / or the second component, or the clamping member can be limitedly arranged with the first component and / or the second component. The clamping member can also play a role in fixing the net part, the first component and the second component. Please refer to Fig.10 The filter assembly of this embodiment further includes a clamping member 15, at least a portion of which is in contact with the first component 12", and at least a portion of which is in contact with the second component 14". Specifically, the clamping member 15 and the first component 12" and the second component 14" can be pressed together, so that the first component, the mesh portion and the second component can be fixed or limited in position. As an embodiment, in the process of forming the filter assembly, the first component, the mesh portion and the second component can be fixedly arranged first, such as by welding, and then the clamping member can be pressed and fixed.

[0062] The filter 100 includes a body 2, a filter assembly 1 is located in the body, and the inner wall of the body 2 is fixedly arranged or limitedly arranged with the filter assembly 1. The body 2 includes a first interface portion 21, a first diameter-reducing portion 22, a main body portion 23, a second diameter-reducing portion 24 and a second interface portion 25, and the main body portion 23 is generally a cylindrical structure, wherein the equivalent diameter of the first interface portion 21 is smaller than the equivalent diameter of the main body portion 23, and the equivalent diameter here can also be a diameter, and the equivalent diameter of the second interface portion 25 is smaller than the equivalent diameter of the main body portion 23, and the equivalent diameter here can also be a diameter, and the equivalent diameter of the first interface portion 21 is greater than, less than or equal to the equivalent diameter of the second interface portion 25. The filter assembly 1 can be fixed or limited in a variety of ways, such as by limiting the way, the body 2 includes a first recessed portion 231 and a second recessed portion 232, the first recessed portion 231 and the second recessed portion 232 are arranged to enable the filter assembly and the body to be limited, and the first recessed portion and the second recessed portion can be arranged at the main body or the first transition portion or the second transition portion. Figure 1 In the illustrated embodiment, the main body 23 is provided with a first recessed portion 231 and a second recessed portion 232, and the first recessed portion 231 and the second recessed portion 232 are provided on both sides of the second circumferential wall of the second component of the filter assembly 1, and the second recessed portion 232 can limit the movement of the second circumferential wall of the second component of the filter assembly 1 in the axial direction of the device body 2, wherein the first recessed portion 231 can be a groove-formed recessed portion or a dent-formed portion, and the second recessed portion 232 can be a groove-formed recessed portion or a dent-formed portion. The first recessed portion 231 and the second recessed portion 232 can limit the movement of the second circumferential wall of the second component of the filter assembly 1 in the axial direction of the device body 2, and the movement therein does not include vibration and fluctuation within a lower range.

[0063] The body of the filter can be made of copper or steel. When using steel such as stainless steel or carbon steel, it may sometimes be necessary to connect with copper. The filter can be equipped with a copper joint, and the copper joint is welded to the first interface part and / or the second interface part. Specifically, welding can be done using higher temperature welding materials, such as solder with a welding temperature of about 1000 degrees. In this way, subsequent welding assembly will not affect the quality of the weld when the temperature is lower than a certain range of the solder temperature, such as above 100 degrees. For example, the maximum temperature of furnace welding between the body and the copper joint can be greater than or equal to 980 degrees, which can be higher than the subsequent welding temperature, such as 835 degrees. Fig.23The structure of the copper joint 3 is shown, which includes a copper joint body 31 that is roughly cylindrical, a convex end 32 is formed at one end of the copper joint body 31 by an external flange, and the equivalent diameter of the outer edge of the convex end 32 is larger than the equivalent diameter of the copper joint body 31, and a guide portion 33 with a diameter reduced in the axial direction is formed at the other end of the copper joint body 31 by a shrinkage, and a plurality of convex ribs 34 are processed on the outer wall of the copper joint 3 and are evenly distributed along the axial periphery of the copper joint 3. The copper joint 3 can be inserted into the first interface portion 21 and / or the second interface portion 22, or the first interface portion 21 and the second interface portion 22 can be inserted into the copper joint separately. Please refer to Fig.24 , taking the copper joint 3 inserted into the first interface part 21 as an example for explanation, the copper joint 3 is inserted into the first interface part 21 so that the outer wall of the copper joint body part 31 matches with the inner wall of the first interface part 21, and the raised end part 32 matches with the end face of the first interface part 21. The convex rib protrudes or is recessed in the copper joint body part. Due to the existence of the convex rib 34, a gap space is formed between the outer wall of the copper joint body part 31 and the inside of the first interface part 21, and the raised end part 32 is pressed and matched with the end face of the first interface part 21 to achieve axial positioning. During the assembly process of the filter 100, an annular solder (such as a solder ring) can be preset in the first interface part 21 first, so that the solder ring is retained, and then the copper joint 2 is pressed in, and then fixed by welding.

[0064] Fig.25 The figure shows an embodiment of the net part, in which the net end 1121 of the net part is not folded, and can be used for Fig.14 , Fig.15 The filter assembly shown in the figure includes an outer support assembly 13f, and the outer support assembly 13f includes a first outer frame 13c and a second outer frame 13d. The first side wall and the second side wall of the first outer frame 13c are axially extended along the outside of the mesh side wall toward the mesh cavity, and the first side wall and the second side wall of the second outer frame 13d are axially extended along the outside of the mesh side wall toward the mesh cavity. The first outer frame 13c is fixedly arranged or limitedly arranged with the first / second component, and the second outer frame 13d is fixedly arranged or limitedly arranged with the first / second component. In this embodiment, the first outer frame 13c, the second outer frame and the second component are fixedly arranged by welding. Please refer to Fig.17, the first outer frame 13c and the second outer frame 13d are fixedly arranged with the second component 16 respectively. The first outer frame 13c and the second outer frame 13d are fixedly arranged, specifically, the bottom wall of the first outer frame 13c and the bottom wall of the second outer frame 13d are fixedly arranged, and more specifically, the fixing method can be welding and fixing. As an embodiment, at least one side wall of the first outer frame 13c and the second outer frame 13d can be arranged along the net fixing part arranged on the net side wall, or in other words, at least one side wall of the first outer frame 13c and the second outer frame 13d is located on the outside of the net fixing part of the net side wall, so that the flow resistance of the working medium can be reduced, and the protection of the net fixing part can be improved, thereby reducing the possibility of the net fixing part arranged on the net side wall to break.

[0065] Please refer to Figure 16-Figure 17 The first component 12e includes a first plate-like portion 121e, a second plate-like portion 122e, a first turning portion 123e, and a third plate-like portion 124e, and the second plate-like portion 122e includes a second turning portion 125e, wherein the first plate-like portion 121e is roughly annular in structure, the second plate-like portion 122e is roughly annular in structure, the first plate-like portion 121e and the second plate-like portion are roughly parallel to each other or are concentrically annularly arranged, the first plate-like portion 121e and the second plate-like portion 122e are transitionally arranged through the first turning portion 123e, the end of the mesh portion is located between the first plate-like portion 121e and the second plate-like portion 122e, the third plate-like portion 124e is roughly extended along the radial direction of the mesh cavity, and the second plate-like portion 122e and the third plate-like portion 124e124e are transitionally arranged through the second turning portion 125e. As an embodiment, the first plate-shaped portion 121e and the second plate-shaped portion 122e jointly fix the net end portion 1121e, and the three can be fixed by welding such as spot welding. Specifically, the net end portion 1121e is also roughly annular, and along the radial direction of the net cavity, the net end portion 1121e is located between the first plate-shaped portion 121e and the second plate-shaped portion 122e; as another embodiment, along the radial direction of the net cavity, the net end portion 1121e is located between the first plate-shaped portion 121e and the second plate-shaped portion 122e, and the first plate-shaped portion 121e, the net end portion 1121e and the second plate-shaped portion 122e are limitedly set by punching concave points or convex points; It is another embodiment. Along the radial direction of the mesh cavity, the mesh end 1121e is located between the first plate-shaped portion 121e and the second plate-shaped portion 122e. The first plate-shaped portion 121e, the mesh end 1121e and the second plate-shaped portion 122e are tightly arranged, and the mesh end located between the first plate-shaped portion 121e and the second plate-shaped portion 122e has a certain length, such as more than 3 mm. That is, the first plate-shaped portion 121e, the mesh end 1121e and the second plate-shaped portion 122e are tightly arranged and the extended mesh end is longer, so that the first plate-shaped portion 121e, the mesh end 1121e and the second plate-shaped portion 122e can be relatively limited and fixed.

[0066] Please refer to Figure 16-Figure 17 The first component 12e and the second component 16 are fixedly arranged. Specifically, the third plate-shaped portion 124e of the first component 12e and the first circumferential wall 161 of the second component can be fixed by welding. More specifically, the third plate-shaped portion 124e of the first component 12e and the first circumferential wall 161 of the second component are spot-welded by multiple welding points. Along the axial direction of the mesh cavity, the first circumferential wall 161 of the second component is closer to the bottom of the mesh than the third plate-shaped portion 124e of the first component 12e; the first plate-shaped portion 121e of the first component 12e and the second plate-shaped portion 122e of the first component 12e jointly fix the mesh end portion 1121e, so that the mesh portion and the first component 12e are fixedly arranged, the first component 12e and the mesh portion are fixedly arranged, the first component 12e and the second component 16 are fixedly arranged, so that the mesh portion and the second component 16 are fixedly arranged, and the filter assembly can be fixedly arranged or limitedly arranged on the inner wall of the device body through the second component 16, so that the mesh portion and the inner wall of the device body are fixedly arranged or limitedly arranged. The first plate-shaped portion 121e of the first component 12e is arranged in cooperation with the end portion 131a of the support frame 13a. Most of the support frame 13a is located in the mesh cavity. The end portion 131a of the support frame 13a is approximately located on the inner side of the first plate-shaped portion 121e of the first component 12e, that is, along the radial direction of the mesh cavity. The first flange portion 136'a of the end portion 131a is approximately located outside the mesh cavity. The end portion 131a includes a transition portion 138a of the first side wall. The transition portion 138a includes a portion extending approximately along the radial direction of the mesh cavity and a portion extending approximately along the axial direction of the mesh cavity. The transition portion 138a allows the first flange portion 136'a to extend approximately along the radial direction of the mesh cavity. The mesh cavity is radially extended, and the end 131a is fixed to the first component 12e. Specifically, the end 131a, the transition portion 138a, and the first plate-like portion 121e and the second plate-like portion 122e of the first component 12e are limited. The first flange portion 136'a is welded to the third plate-like portion 124e of the first component 12e. The welding setting can be a spot welding setting. In this way, the support frame 13a is fixed to the first component, which relatively increases the stability of the support frame. At the same time, it is beneficial to reduce the impact of the support frame 13a on the mesh portion due to unstable fixation when there is a working medium, which may cause damage to the mesh portion. The support frame 13c is located outside the mesh cavity, and the support frame 13c is fixed to the second component. Along the axial direction of the mesh cavity, the flange portion of the support frame 13c is closer to the bottom of the mesh than the second plate-shaped portion of the second component. The third plate-shaped portion 124e of the first component 12e and the flange portion of the support frame 13c are respectively located on the opposite sides of the first peripheral wall 161 of the second component. Specifically, the flange portion of the support frame 13c is welded to the second component, and more specifically, the flange portion of the support frame 13c is spot-welded to the second plate-shaped portion of the second component.

[0067] The second part of the filter assembly can be found in Fig.26, the second plate-like portion can be arranged on the second component, and the second component 16 includes a first circumferential wall 161, a second circumferential wall 162 and a turning portion 163, wherein the first circumferential wall 161 and the second circumferential wall 162 are transitionally arranged through the turning portion 163. The first circumferential wall 161 is extended approximately along the radial direction of the mesh cavity, and the second circumferential wall 162 is extended approximately along the axial direction of the mesh cavity. The first circumferential wall 161 and the second circumferential wall 162 are transitionally arranged through the turning portion 163. The first circumferential wall 161 is cooperated with the first plate-like portion to fix or limit the end of the mesh, and along the axial direction of the mesh cavity, the first circumferential wall 161 is relatively closer to the bottom of the mesh than the first plate-like portion. The second circumferential wall 162 of the second component 16 can be fixedly arranged or limitedly arranged with the inner wall of the device body.

[0068] A method for manufacturing the filter assembly 11 is described by the following embodiment. The manufacturing method includes the following steps, and some orders of the following steps can be adjusted:

[0069] S1: Processing of the mesh. The filter mesh that meets the requirements is screened, cut or punched to obtain the filter body, and the filter body is folded to form the mesh side wall and the mesh bottom without welding, or the filter body is directly obtained; the filter body is welded at the mesh fixing part, so that the mesh fixing part located at the mesh side wall and the bottom is welded and fixed; or the mesh fixing part located at the mesh side wall is welded and fixed first, and then the mesh bottom is obtained by folding, folding or cutting, and the mesh fixing part located at the mesh bottom is welded, so that the mesh fixing part located at the mesh bottom is welded and set to obtain the mesh bottom. or, by screening the filter mesh that meets the requirements, cutting to obtain the filter body without welding the side wall and the bottom, or directly obtaining the filter body; welding the filter body at the mesh fixing part, so that the mesh fixing part located at the side wall is welded, and the mesh bottom is obtained by folding or folding or cutting, and welding the mesh fixing part located at the mesh bottom part, so that the mesh fixing part located at the mesh bottom is welded to obtain the mesh bottom; in this way, when the mesh end needs to be flanging, it also includes flanging the mesh end of the mesh side wall. The specific processing process of the mesh part can be adjusted as needed.

[0070] S2: Processing of the support frame of the support component. Select a metal sheet or strip material of the support component that meets the requirements, such as a plate strip, and obtain a support frame including a first side wall, a second side wall and a bottom wall through stamping or bending; or select a support frame body that meets the requirements, such as a plate strip, and bend the support frame body to obtain a support frame including a first side wall, a second side wall and a bottom wall, and bend the first side wall and the second side wall to obtain a first flange portion and a second flange portion; thus, obtain the support frame;

[0071] S3: Processing of the first component. The first peripheral wall is obtained by stretching the plate sheet that meets the requirements and removing the excess part, and the first plate-shaped portion is obtained by punching the plate sheet that obtains the first peripheral wall, so as to obtain the first component, or the plate sheet is directly punched to obtain the first component;

[0072] S4: Processing of the second component. The plate or sheet that meets the requirements is stretched and the excess part is removed to obtain the second peripheral wall, and the sheet obtained by punching the second peripheral wall is obtained to obtain the second plate-shaped portion, so as to obtain the second component, or the plate is directly punched to obtain the second component.

[0073] The manufacturing method further comprises the following steps: processing of the filter assembly, wherein steps P1 and P2 of the following steps may be only one or both of them:

[0074] P1: Welding the bottoms of at least two support frames to form an inner support assembly;

[0075] P2: Welding the bottoms of at least two outer frames to form an outer support assembly;

[0076] P3: a): Assemble and weld the inner support component, the mesh part, the first component and the second component to form a filter component, or b): Assemble and weld the outer support component, the mesh part, the first component and the second component to form a filter component, or c): Assemble the inner support component, the mesh part, the first component, the second component and the outer support component to form a filter component; or d): The inner support component is welded to the first component, and the first component after welding is assembled with the inner support component, the mesh part and the second component, and the first component, the mesh end of the mesh part and the second component are welded and fixed; or e): The outer support component is welded to the second component, and the second component after welding is assembled with the outer support component, the first component and the mesh part, and welded; or f): The inner support component is welded to the first component to form a first component, and the outer support component is welded to the second component to form a second component, and the mesh part is assembled with the first component and the second component and welded.

[0077] The filter assembly can also be manufactured according to the following manufacturing method, including the following steps, some of the orders of the following steps can be adjusted:

[0078] S1: Processing of the mesh. The filter mesh cloth is cut or punched to obtain the filter body, and the filter body is folded and welded to form the mesh. For details, please refer to the above S1 step;

[0079] S2: Processing of a support frame of the support assembly. A metal sheet or strip is processed into a support frame by stamping, or a metal sheet or strip is processed into a support frame by cutting and bending. The support frame includes a first side wall, a second side wall and a bottom wall;

[0080] S3': Processing of the first component. Select appropriate material and obtain the first component by stretching or stamping. If necessary, the first component can be shaped to improve its consistency;

[0081] S3: Processing of the second component. Select appropriate materials and obtain the second component through stretching or stamping. If necessary, the second component can be shaped to make it more consistent;

[0082] P3: a): Assembly of the filter assembly. Assemble and weld the mesh, the first component and the second component, and then sleeve the two support frames of the outer support assembly and weld them to the second component to form a filter assembly; b): Alternatively, assemble and weld the mesh, the first component and the second component, weld the two support frames of the outer support assembly, and sleeve the outer support assembly and weld it to the second component to form a filter assembly; c): Alternatively, assemble and weld the mesh, the first component and the second component, weld the two support frames of the inner support assembly, and install the inner support assembly into the mesh cavity and weld it to the first component to form a filter assembly.

[0083] The manufacturing method may also be as follows, and the order of steps P1 and P3' is not limited:

[0084] P1: Welding the bottoms of at least two support frames of the inner support assembly to form an inner support assembly;

[0085] P3': The first component is welded to the mesh portion to form a first member;

[0086] P4': The inner support assembly is welded to the first component to form a second component;

[0087] P6': The second component is welded to the second part to form a filter assembly.

[0088] The manufacturing method may also be as follows, and the following steps are not limited in order: wherein steps P1 and P2 may be selected from one or both, and some steps may be replaced, such as P5' may be performed before or at the same time as P3':

[0089] P1: welding the bottoms of at least two support frames of the inner support assembly to form an inner support assembly; and or, P2: welding the bottoms of at least two outer frames of the outer support assembly to form an outer support assembly;

[0090] P3': The first component is welded to the mesh portion to form a first member;

[0091] P4': The inner support assembly is welded to the first component to form a second component;

[0092] P5': the outer support assembly is welded to the second component to form a third member;

[0093] P6': The second component and the third component are welded together.

[0094] The assembly of the filter comprises the following steps, wherein the processing of the first interface portion and the second interface portion can be reversed:

[0095] One end of the tube blank is processed by rolling or other shrinking methods to form a first interface portion at one end, and at the same time, a first inner concave portion is formed on the main body of the tube blank by rolling or dotting, so that the main body of the tube blank protrudes inward at the inner wall of the first inner concave portion;

[0096] Insert the filter assembly so that the second peripheral wall of the second component of the filter assembly is located on a side of the first inner recess relatively away from the first interface portion;

[0097] In the main body of the tube blank, a second inner recess is formed by rolling or dotting a side of the second peripheral wall of the corresponding second component that is relatively far from the first inner recess, so that the second peripheral wall of the second component is located between the first inner recess and the second inner recess;

[0098] The other end of the body tube blank is processed by rolling or other shrinking methods to form a second interface portion at the other end.

[0099] Assembly of the filter may also include the following steps:

[0100] One end of the tube blank is processed by rolling or other shrinking methods to form a first interface part or a second interface part at one end;

[0101] The filter assembly is installed, the second peripheral wall of the second component of the filter assembly is transitionally matched or interference-matched with the main body of the body tube blank, and the main body of the body tube blank and the second peripheral wall of the second component of the filter assembly are welded and fixed at the corresponding position, such as spot welding or argon arc welding, etc.;

[0102] The other end of the body tube blank is processed by rolling or other shrinking methods to form a second interface part or a first interface part at the other end.

[0103] It should be noted that the above embodiments are only used to illustrate the corresponding technical solutions and are not intended to limit the technical solutions described in the present invention. Although this specification provides detailed descriptions with reference to the above embodiments, ordinary technicians in the field should understand that technicians in the relevant technical field can still modify or replace the above implementation modes, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the present invention.

Claims

1. A filter for a refrigeration system, the filter comprising a body and a filter assembly, the filter assembly being located in the body, the filter assembly comprising a mesh portion, a first component and a second component, the mesh portion comprising a mesh side wall and a mesh bottom, the mesh side wall comprising a mesh end portion, at least a portion of the mesh end portion being fixedly arranged or limitedly arranged with the first component, the second component comprising a second peripheral wall and a connecting portion, the first component being fixedly connected to the connecting portion, the second peripheral wall extending along the axial direction of the filter, the free end of the second peripheral wall having a flange structure along the axial direction of the filter, the flange structure being folded in a direction away from the mesh end portion along the radial direction of the filter, and at least a portion of the flange structure being tightly matched with the inner wall of the body.

2. The filter according to claim 1, characterized in that The first component includes a first plate-like portion, a first circumferential wall portion and a first turning portion, the first plate-like portion is connected to the first circumferential wall via the first turning portion, the first plate-like portion extends approximately along the radial direction of the mesh portion, the first circumferential wall extends approximately along the axial direction of the mesh portion, the second circumferential wall is located on the outside of the first circumferential wall, the second circumferential wall can be used to limit the first circumferential wall, and the equivalent diameter of the second circumferential wall is greater than the equivalent diameter of the first circumferential wall.

3. The filter according to claim 2, characterized in that The connecting portion includes a second plate-shaped portion, the second plate-shaped portion includes a turning portion, the second plate-shaped portion and the second peripheral wall are connected as a whole through the turning portion, the second plate-shaped portion extends approximately along the radial direction of the mesh portion, the mesh end portion is located between the first plate-shaped portion and the second plate-shaped portion, the first plate-shaped portion and the second plate-shaped portion are arranged approximately in parallel, the mesh portion, the first plate-shaped portion and the second plate-shaped portion are pressed and welded, and along the axial direction of the filter mesh, the second plate-shaped portion is closer to the mesh bottom than the mesh end portion, and the mesh end portion is closer to the mesh bottom than the first plate-shaped portion.

4. The filter according to any one of claims 1 to 3, characterized in that: The net portion includes a net fixing portion, the net fixing portion includes a fixing portion located on the net side wall, the net fixing portion located on the net side wall extends approximately along the axial direction of the filter net, the filter assembly includes an inner support assembly, the inner support assembly includes a first support frame and a second support frame, at least most of the support frame of the inner support assembly is located in the net cavity, the first support frame and the second support frame are welded, and the side wall of the first support frame and the net fixing portion of the net side wall are correspondingly arranged.

5. The filter according to claim 4, characterized in that The support assembly includes an outer support assembly, the support assembly includes at least one outer frame, the outer frame is located outside the net cavity, the outer frame includes side walls and a bottom wall, along the radial direction of the filter, at least part of the side wall of the first support frame is opposite to the side wall of the outer frame and is overlapped and arranged on the inner and outer sides of the net fixing part; The first supporting frame and the second supporting frame are fixedly arranged with the first component, and the outer frame is fixedly arranged with the second component.

6. The filter according to claim 1, characterized in that The first component includes a first plate-shaped portion, a second plate-shaped portion, a first turning portion and a third plate-shaped portion, the first plate-shaped portion and the second plate-shaped portion are arranged substantially in parallel, the first plate-shaped portion and the second plate-shaped portion are arranged in transition through the first turning portion, the net end portion is located between the first plate-shaped portion and the second plate-shaped portion, the third plate-shaped portion is arranged on the radial outer side of the net cavity, and along the radial direction of the net cavity, the third plate-shaped portion is extended from the second plate-shaped portion away from the axis of the net cavity; The filter assembly includes an inner support assembly, the inner support assembly includes a support frame, most of the support frame is located in the mesh cavity, the support frame includes an end, the end includes a transition portion, the end is formed with a U-shaped groove, the transition portion constitutes a partial groove wall of the U-shaped groove, the first plate-shaped portion and the second plate-shaped portion are limitedly arranged in the U-shaped groove, and the first flange portion is welded to the third plate-shaped portion.

7. The filter according to claim 6, characterized in that The end portion includes a first flange portion, which is located outside the mesh cavity and extends approximately along the radial direction of the mesh cavity. The transition portion includes a portion extending approximately along the radial direction of the mesh portion and a portion extending approximately along the axial direction of the mesh portion. The transition portion is limited by the first plate-shaped portion and the second plate-shaped portion.

8. The filter according to claim 6 or 7, characterized in that The connecting portion includes a first peripheral wall, the third plate-shaped portion and the first flange portion are respectively located on two opposite sides of the first peripheral wall, and the first flange portion is fixed to the first peripheral wall by spot welding.

9. A method for preparing a filter, characterized in that: The method comprises the following steps: Providing an inner support assembly, a first component and a second component embryo; Punching the second component blank to form the second component with a flanging structure at the free end; The first component is welded to the mesh portion to form a first member; The inner support assembly is welded to the first component to form a second component; The second component is welded to the second part to form a filter assembly.

Images