Plate heat exchanger and machining method thereof

Abstract

The invention relates to the technical field of heat exchange, in particular to a plate heat exchanger and a machining method thereof.The first plate piece comprises a first hole, at least part of the first hole is located in a protruding part, at least part of the first hole is located in the side wall of the plate piece, and the first plate piece comprises a welding area located on the peripheral side of the first hole; at least part of the welding area is located on the side wall of the plate, compared with the background technology, at least part of the welding area is arranged on the side wall of the plate, the area occupied by the welding area on the bottom wall of the plate is reduced, and therefore the actual heat exchange area is increased, and the heat exchange efficiency is improved; after the step of machining the through holes in the plate pieces, the first plate pieces are obtained through punch forming, the first plate pieces and the matched plate pieces are stacked and welded, the plate heat exchanger is obtained, and the heating efficiency of the plate heat exchanger is high.

Description

[Technical field]

[0001] The invention relates to the technical field of heat exchange, and in particular to a plate heat exchanger and a processing method thereof. [Background technology]

[0002] A plate heat exchanger, reference Figure 6 , including a plate 1', the plate including a plate side wall 2', a plate bottom wall 3' and a boss 4', the plate side wall 2' is located on the peripheral side of the plate bottom wall 3', the plate includes a welding area 20' and a corner hole 5', the corner hole 5' is located on the boss 4', the welding area 20' is located on the peripheral side of the corner hole 5' on the boss 4', in order to achieve welding, the boss 4' corresponding to the welding area 20' occupies a larger area of ​​the plate bottom wall 3', so that the actual heat exchange area is reduced, and the heat exchange efficiency needs to be improved. [Summary of the invention]

[0003] In order to solve the above technical problems, the present invention provides a plate heat exchanger with high heat exchange efficiency and a processing method thereof.

[0004] A plate heat exchanger, the plate heat exchanger includes at least a first plate, the first plate includes at least a plate bottom wall and a plate side wall, the plate side wall protrudes relative to the plate bottom wall, the plate side wall is located at least partially on the peripheral side of the plate bottom wall, the first plate includes a protrusion, at least part of the protrusion protrudes from the plate bottom wall, the first plate includes a first hole, at least part of the first hole is located on the protrusion, at least part of the first hole is located on the plate side wall, at least part of the protrusion is connected to the plate side wall, the first plate includes a welding area, the welding area is located on the peripheral side of the first hole, at least part of the welding area is located on the plate side wall, and at least part of the welding area is located on the protrusion.

[0005] Such a plate heat exchanger includes a first hole through a first plate, at least part of the first hole is located in the protrusion, at least part of the first hole is located in at least part of the side wall of the plate, that is, at least part of the first hole is located in the side wall of the plate, the first plate includes a welding area, the welding area is located around the first hole, at least part of the welding area is located on the side wall of the plate, that is, relative to the background technology, this solution places at least part of the welding area around the first hole on the side wall of the plate, reducing the area occupied by the welding area on the bottom wall of the plate, thereby increasing the actual heat exchange area and improving the heat exchange efficiency.

[0006] A method for processing a plate heat exchanger comprises the following steps:

[0007] Provide board materials;

[0008] Processing through holes in the sheet;

[0009] After the step of "machining a through hole on the plate", a stamping process is performed to obtain a first plate, wherein the first plate has a plate side wall, a plate bottom wall and a protrusion, wherein the plate side wall protrudes relative to the plate bottom wall, the plate side wall is formed on the peripheral side of the plate bottom wall, and the first plate has a first hole, wherein at least a portion of the first hole is located at the protrusion, and at least a portion of the first hole is located at the plate side wall;

[0010] Provide matching plates;

[0011] The first plate is stacked and welded to the mating plate.

[0012] Such a processing method, after the step of "processing a through hole on the plate", performs stamping to obtain a first plate, the first plate having a plate side wall, a plate bottom wall and a protrusion, the plate side wall protruding relative to the plate bottom wall, the plate side wall formed on the peripheral side of the plate bottom wall, the first plate having a first hole, at least part of the first hole is located at the first protrusion, at least part of the first hole is located at the side wall of the plate; the first plate and the matching plate are stacked and welded to obtain a plate heat exchanger, and the plate heat exchanger has a high heating efficiency.

Brief Description of the Drawings

[0013] Figure 1 This is a schematic diagram of a first plate in an embodiment;

[0014] Figure 2 A top view of a first plate of an embodiment;

[0015] Figure 3 It is a cross-sectional view of the assembly of the first plate and the matching plate in one embodiment;

[0016] Figure 4 A top view of a plate of another embodiment;

[0017] Figure 5 This is a schematic diagram of a plate with through holes processed;

[0018] Figure 6 A schematic diagram of background technology.

[0019] Reference numerals:

[0020] A first plate 1, a plate bottom wall 11, a plate side wall 12, a first plate side wall 121, a second plate side wall 122, a protrusion 13, and a first hole 14;

[0021] Boss 130, boss side wall 131, first portion 132, arc segment 1321, first straight segment 1322, second straight segment 1323, first boss side wall 133, boss top wall 134;

[0022] Matching plate 2, matching side wall 21, matching bottom wall 22, second hole 23;

[0023] Plate 10, through hole 101;

[0024] Welding area 20;

[0025] Plate 1', plate side wall 2', plate bottom wall 3', boss 4', corner hole 5', welding area 20'. [Specific implementation method]

[0026] The technical solution of the specific implementation is described below in conjunction with the accompanying drawings:

[0027] A plate heat exchanger, reference Figure 1-Figure 4 The plate heat exchanger comprises at least a first plate 1, the first plate 1 comprises at least a plate bottom wall 11 and a plate side wall 12, the plate side wall 12 protrudes relative to the plate bottom wall 11, and the plate side wall 12 is located at least partially on the peripheral side of the plate bottom wall 11, the first plate 1 comprises a protrusion 13, at least part of the protrusion 13 protrudes from the plate bottom wall 11, the first plate 1 comprises a first hole 14, at least part of the first hole 14 is located on the protrusion 13, at least part of the first hole 14 is located on the plate side wall 12, at least part of the protrusion 13 is connected to the plate side wall 12, the first plate 1 comprises a welding area 20, the welding area 20 is located on the peripheral side of the first hole 14, at least part of the welding area 20 is located on the plate side wall 12, and at least part of the welding area 20 is located on the protrusion 13.

[0028] Such a plate heat exchanger includes a first hole 14 through the first plate 1, at least part of the first hole 14 is located at the protrusion 13, at least part of the first hole 14 is located at least part of the plate side wall 12, that is, at least part of the first hole 14 is located at the plate side wall 12, the first plate 1 includes a welding area 20, the welding area 20 is located around the first hole 14, at least part of the welding area 20 is located at the plate side wall 12, that is, relative to the background technology, this solution places at least part of the welding area 20 on the plate side wall 12, reduces the area occupied by the welding area 20 on the plate bottom wall 11, thereby increasing the actual heat exchange area and improving the heat exchange efficiency.

[0029] It should be noted that the welding area 20 is located on the peripheral side of the first hole 14 on the wall portion corresponding to the first hole 14 , and the plates are connected by welding to achieve sealing between different spaces of the plate heat exchanger.

[0030] In one embodiment, reference Figure 1-Figure 4 The protrusion 13 is a boss 130, and the boss 130 has a boss side wall 131 and a boss top wall 134. At least a portion of the boss side wall 131 extends from the plate bottom wall 11 to the boss top wall 134, and at least a portion of the boss side wall 131 is connected to at least a portion of the spring side wall.

[0031] Such a plate heat exchanger, through the protrusion 13 is a boss 130, the boss 130 has a boss side wall 131 and a boss top wall 134, which can increase the welding area when the first plate 1 and other plates are welded during the welding process of the plate heat exchanger, thereby improving the structural stability of the plate heat exchanger.

[0032] In one embodiment, reference Figure 1-Figure 2 The boss side wall 131 includes a first boss side wall 133, the plate side wall 12 includes a first plate side wall 121, the first boss side wall 133 and the first plate side wall 121 are connected, at least a portion of the first hole 14 is located on the first boss side wall 133, at least a portion of the first hole 14 is located on the first plate side wall 121, at least a portion of the first hole 14 is located on the boss top wall 134, and at least a portion of the welding area 20 is located on the first boss side wall 133, the first plate side wall 121 and the boss top wall 134.

[0033] Such a plate heat exchanger is connected by the first boss side wall 133 and the first plate side wall 121, and at least part of the welding area 20 is located on the first boss side wall 133, the first plate side wall 121 and the boss top wall 134, thereby reducing the area occupied by the welding area 20 on the boss top wall 134, reducing the area occupied by the boss 130 on the plate bottom wall 11, increasing the effective heat exchange area of ​​the plate bottom wall 11, and improving the heat exchange efficiency.

[0034] Specifically, refer to Figure 1-Figure 2 The first boss side wall 133 and the first plate side wall 121 are respectively located on both sides of the plate bottom wall 11, and the first boss side wall 133 extends from the first plate side wall 121, and the planes corresponding to the first boss side wall 133 and the first plate side wall 121 coincide with each other. That is, the first boss side wall 133 and the first plate side wall 121 are extended and connected, at least part of the first hole 14 is located on the first boss side wall 133, and at least part of the first hole 14 is located on the first plate side wall 121, so that the first boss side wall 133, the first plate side wall 121 and the corresponding plate are matched, and at least part of the first hole 14 located on the first boss side wall 133 and the first plate side wall 121 is sealed.

[0035] In one embodiment, reference Figure 4The boss side wall 131 includes a first boss side wall 133, the plate side wall 12 includes a first plate side wall 121 and a second plate side wall 122, the first plate side wall 121 and the second plate side wall 122 are adjacently arranged and bent, at least a portion of the first boss side wall 133 is connected to at least a portion of the first plate side wall 121, at least a portion of the first boss side wall 133 is connected to at least a portion of the second plate side wall 122, at least a portion of the first hole 14 is located on the first plate side wall 121, at least a portion of the first hole 14 is located on the second plate side wall 122, at least a portion of the first hole 14 is located on the first boss side wall 133, at least a portion of the first hole 14 is located on the boss top wall 134, and at least a portion of the welding area 20 is located on the first boss side wall 133, the first plate side wall 121, the second plate side wall 122 and the boss top wall 134.

[0036] Such a plate heat exchanger is connected by at least a portion of the first boss side wall 133 and at least a portion of the first plate side wall 121, at least a portion of the first boss side wall 133 and at least a portion of the second plate side wall 122, the first plate side wall 121 and the second plate side wall 122 are arranged adjacent to each other and bent in transition, at least a portion of the welding area 20 is located on the first boss side wall 133, the first plate side wall 121, the second plate side wall 122 and the boss top wall 134, thereby reducing the area occupied by the welding area 20 on the boss top wall 134, thereby reducing the area occupied by the boss 130 on the plate bottom wall 11, increasing the effective heat exchange area of ​​the plate bottom wall 11, and improving the heat exchange efficiency.

[0037] Specifically, at least part of the first boss side wall 133 and the first plate side wall 121 are respectively located on both sides of the plate bottom wall 11, at least part of the first boss side wall 133 extends from the first plate side wall 121, and at least part of the first boss side wall 133 coincides with the plane of the first plate side wall 121; at least part of the first boss side wall 133 and the second plate side wall 122 are respectively located on both sides of the plate bottom wall 11, at least part of the first boss side wall 133 extends from the second plate side wall 122, and at least part of the first boss side wall 133 coincides with the corresponding plane of the second plate side wall 122. That is, at least a portion of the first boss side wall 133 is extended and connected to at least a portion of the first plate side wall 121, and at least a portion of the first boss side wall 133 is extended and connected to at least a portion of the second plate side wall 122. At least a portion of the first hole 14 is located on the first boss side wall 133, at least a portion of the first hole 14 is located on the first plate side wall 121, and at least a portion of the first hole 14 is located on the second plate side wall 122, so that the first boss side wall 133, the first plate side wall 121, and the second plate can be pulled back to cooperate with the corresponding plates, and so that at least a portion of the first hole 14 located on the first boss side wall 133, the first plate side wall 121, and the second plate side wall 122 can be sealed.

[0038] In one embodiment, reference Figure 3 The plate heat exchanger includes a matching plate 2, which is stacked with the first plate 1. The matching plate 2 has a matching side wall 21 and a matching bottom wall 22. The matching side wall 21 is located at least partially around the matching bottom wall 22. The boss top wall 134 and the matching bottom wall 22 are welded and fixed. The matching plate 2 has a second hole 23. At least a portion of the first hole 14 corresponds to the second hole 23. The plate side wall 12 corresponding to at least a portion of the first hole 14 and at least a portion of the matching plate 2 are welded and fixed.

[0039] Such a plate heat exchanger is fixed by welding the boss top wall 134 and the matching bottom wall 22, at least part of the first hole 14 corresponds to the second hole 23, and the plate side wall 12 corresponding to at least part of the first hole 14 and at least part of the matching plate 2 are welded and fixed, so that the fluid can enter the second hole 23 from at least part of the first hole 14, and at the same time, the sealing of both sides of the first plate 1 is achieved, that is, in the process of the fluid flowing from at least part of the first hole 14 through at least part of the second hole 23, the fluid is prevented from entering the space between the plate bottom wall 11 and the matching bottom wall 22, so as to achieve the sealing of both sides of the first plate 1.

[0040] In one embodiment, reference Figure 1 , Figure 2 and Figure 4 The boss side wall 131 includes a first portion 132, the first portion 132 is located on the plate bottom wall 11, the first portion 132 includes an arc segment 1321, a first straight segment 1322 and a second straight segment 1323, the arc segment 1321 is located between the first straight segment 1322 and the second straight segment 1323, the first straight segment 1322 and the second straight segment 1323 are respectively connected to at least part of the first boss side wall 133.

[0041] Such a plate heat exchanger realizes an arc transition connection between the first straight segment 1322 and the second straight segment 1323 by positioning the arc segment 1321 between the first straight segment 1322 and the second straight segment 1323, thereby avoiding excessive stress during the process of stamping the boss 130, causing stress concentration and resulting in reduced strength of the first plate 1.

[0042] A processing method for plate heat exchanger, reference Figure 5 , including the following steps:

[0043] Providing a plate 10;

[0044] Processing a through hole 101 on the plate 10;

[0045] After the step of “machining a through hole 101 on the plate 10”, a stamping process is performed to obtain a first plate 1, wherein the first plate 1 has a plate side wall 12, a plate bottom wall 11 and a protrusion 13, wherein the plate side wall 12 protrudes relative to the plate bottom wall, and the plate side wall 12 is formed on the periphery of the plate bottom wall 11, and the first plate has a first hole 14, wherein at least a portion of the first hole 14 is located at the protrusion 13, and at least a portion of the first hole 14 is located at the plate side wall 12;

[0046] Providing a matching plate 2;

[0047] The first plate 1 is stacked and welded with the mating plate.

[0048] Such a processing method, after the step of "processing a through hole 101 on the plate 10", performs stamping to obtain a first plate 1, the first plate 1 having a plate side wall 12, a plate bottom wall 11 and a protrusion 13, the plate side wall 12 protrudes relative to the plate bottom wall, the plate side wall 12 is formed on the side of the plate bottom wall 11, the first plate has a first hole 14, at least part of the first hole 14 is located at the protrusion 13, at least part of the first hole 14 is located at the plate side wall 12; provide a matching plate 2; stack and weld the first plate 1 and the matching plate to obtain a plate heat exchanger, and the plate heat exchanger has a high heating efficiency.

[0049] Specifically, during stamping, the punch covers a portion of the through hole, so that the punch bends the peripheral side wall of the through hole 101 during stamping, so that a portion of the peripheral side wall of the through hole 101 is formed into a protrusion 13, and a portion of the peripheral side wall of the through hole 101 is formed into a plate side wall 12. This processing method can form the plate side wall 12, the plate bottom wall 11, the first protrusion 13 and the first hole 14 in one step after punching, and the processing is relatively convenient.

[0050] It should be noted that: although this specification has described the present invention in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that technicians in the relevant technical field can still modify, combine or replace the present invention with equivalents, and all technical solutions and improvements thereto that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A plate heat exchanger, comprising at least a first plate (1), wherein the first plate (1) comprises at least a plate bottom wall (11) and a plate side wall (12), wherein the plate side wall (12) protrudes relative to the plate bottom wall (11), and the plate side wall (12) is located at least partially around the plate bottom wall (11), characterized in that: The first plate (1) comprises a protrusion (13), at least part of which protrudes from the bottom wall (11) of the plate; the first plate (1) comprises a first hole (14), at least part of which is located on the protrusion (13), at least part of which is located on the side wall (12) of the plate, at least part of which is connected to the side wall (12) of the plate; the first plate (1) comprises a welding area (20), the welding area (20) is located on the peripheral side of the first hole (14), at least part of which is located on the side wall (12) of the plate, and at least part of which is located on the protrusion (13).

2. The plate heat exchanger according to claim 1, characterized in that: The protrusion (13) is a boss (130), and the boss (130) has a boss side wall (131) and a boss top wall (134), at least a portion of the boss side wall (131) extends from the plate bottom wall (11) to the boss top wall (134), and at least a portion of the boss side wall (131) is connected to at least a portion of the plate side wall (12).

3. The plate heat exchanger according to claim 2, characterized in that: The boss side wall (131) includes a first boss side wall (133), the plate side wall (12) includes a first plate side wall (121), the first boss side wall (133) and the first plate side wall (121) are connected, at least a portion of the first hole (14) is located on the first boss side wall (133), at least a portion of the first hole (14) is located on the first plate side wall (121), at least a portion of the first hole (14) is located on the boss top wall (134), and at least a portion of the welding area (20) is located on the first boss side wall (133), the first plate side wall (121) and the boss top wall (134).

4. The plate heat exchanger according to claim 3, characterized in that: The first boss side wall (133) and the first plate side wall (121) are respectively located on both sides of the plate bottom wall (11), the first boss side wall (133) extends from the first plate side wall (121), and the planes corresponding to the first boss side wall (133) and the first plate side wall (121) coincide with each other.

5. The plate heat exchanger according to claim 2, characterized in that: The boss side wall (131) includes a first boss side wall (133), the plate side wall (12) includes a first plate side wall (121) and a second plate side wall (122), the first plate side wall (121) and the second plate side wall (122) are arranged adjacent to each other and are bent and transitioned, at least a portion of the first boss side wall (133) is connected to at least a portion of the first plate side wall (121), at least a portion of the first boss side wall (133) is connected to at least a portion of the second plate side wall (122), and the first hole At least a portion of the first hole (14) is located on the first plate side wall (121), at least a portion of the first hole (14) is located on the second plate side wall (122), at least a portion of the first hole (14) is located on the first boss side wall (133), at least a portion of the first hole (14) is located on the boss top wall (134), and at least a portion of the welding area (20) is located on the first boss side wall (133), the first plate side wall (121), the second plate side wall (122) and the boss top wall (134).

6. The plate heat exchanger according to claim 5, characterized in that: At least part of the first boss side wall (133) and the first plate side wall (121) are respectively located on both sides of the plate bottom wall (11), at least part of the first boss side wall (133) extends from the first plate side wall (121), and at least part of the first boss side wall (133) coincides with the plane of the first plate side wall (121); at least part of the first boss side wall (133) and the second plate side wall (122) are respectively located on both sides of the plate bottom wall (11), at least part of the first boss side wall (133) extends from the second plate side wall (122), and at least part of the first boss side wall (133) coincides with the plane corresponding to the second plate side wall (122).

7. The plate heat exchanger according to any one of claims 3 to 5, characterized in that: The boss side wall (131) includes a first portion (132), the first portion (132) is located on the plate bottom wall (11), the first portion (132) includes an arc segment (1321), a first straight segment (1322) and a second straight segment (1323), the arc segment (1321) is located between the first straight segment (1322) and the second straight segment (1323), the first straight segment (1322) and the second straight segment (1323) are respectively connected to at least part of the first boss side wall (133).

8. The plate heat exchanger according to any one of claims 2 to 5, characterized in that: The plate heat exchanger comprises a matching plate (2), wherein the matching plate (2) and the first plate (1) are stacked, the matching plate (2) having a matching side wall (21) and a matching bottom wall (22), the matching side wall (21) being located at least partially on the peripheral side of the matching bottom wall (22), the boss top wall (134) and the matching bottom wall (22) being welded and fixed, the matching plate (2) having a second hole (23), at least a portion of the first hole (14) corresponding to the second hole (23), and the plate side wall (12) corresponding at least partially to the first hole (14) and at least a portion of the matching side wall (21) being welded and fixed.

9. A method for processing a plate heat exchanger, characterized in that: The steps include: Providing a plate (10); Processing a through hole (101) on a plate (10); After the step of "machining a through hole (101) on the plate (10)", a stamping process is performed to obtain a first plate (1), wherein the first plate (1) has a plate side wall (12), a plate bottom wall (11) and a protruding portion (13), wherein the plate side wall (12) protrudes relative to the plate bottom wall (11), and the plate side wall (12) is formed on the periphery of the plate bottom wall (11), and the first plate (1) has a first hole (14), wherein at least a portion of the first hole (14) is located on the protruding portion (13), and at least a portion of the first hole (14) is located on the plate side wall (12); Providing a matching plate (2); The first plate (1) and the matching plate (2) are stacked and welded.

10. The processing method according to claim 9, characterized in that: During punching, the punch covers a portion of the through hole, so that the punch bends the peripheral side wall of the through hole (101) during punching, so that a portion of the peripheral side wall of the through hole (101) is formed into a protrusion (13), and a portion of the peripheral side wall of the through hole (101) is formed into a plate side wall (12).

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