Corner hole reinforced plate sheet based on brazed plate heat exchanger

Abstract

The utility model discloses a corner hole reinforced plate sheet based on a brazed plate heat exchanger, and relates to the technical field of heat exchanger plate sheets. The sheet bar comprises a sheet bar body, corner holes are formed in the four corners of the sheet bar body, flanging mechanisms are arranged at the corner holes in the sheet bar body and comprise annular vertical edge parts, the vertical edge parts and the sheet bar body are integrated, the inner sides of the vertical edge parts are flush with the inner walls of the corner holes, and first reinforcing parts are arranged between the outer sides of the vertical edge parts and the sheet bar body. Positioning grooves are formed in the inner sides of the corner holes in the sheet body. The flanging mechanisms are arranged on the outer sides of the corner holes of the sheet bar, positioning and limiting can be achieved through mutual matching of the flanging mechanisms, the dislocation problem occurring in the assembling and arranging process is avoided, the flanging is provided with a brazing layer in the brazing process, welding points are generated in the flanging, the sealing performance can be improved, and the service life of the sheet bar is prolonged. And the compressive strength of the positions of the corner holes can be improved through mutual interference of the positions of the corner holes, and the inner leakage condition is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchanger plates, and particularly relates to a corner hole reinforced plate based on a brazed plate heat exchanger. Background Art

[0002] For brazed plate heat exchangers, a large number of plates are stacked and assembled by brazing. Corner holes are set at the four corners of the plates for the flow of refrigerant and heat medium. During manufacturing and assembly, in order to improve the quality of product qualification, the plates are stacked and positioned by the edges, and are stacked and assembled one by one. If the corner holes are deformed after brazing, internal leakage is likely to occur. In addition, when the medium pressure is too high during use, the corner holes are also prone to deformation and internal leakage, affecting the normal use of the heat exchanger. Utility Model Content

[0003] The purpose of the utility model is to provide a corner hole reinforced plate based on a brazed plate heat exchanger. By arranging a flanging mechanism on the outer side of the corner hole of the plate, the mutual cooperation of the flanging mechanism can also position and limit, avoiding the misalignment problem in the assembly and arrangement process, and the flanging is also provided with a brazing layer during brazing, so a welding point is also generated in the flanging, which can improve the sealing performance, and the mutual interference of the corner hole position can improve the compressive strength at the corner hole position, avoiding the occurrence of internal leakage.

[0004] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0005] The utility model is a corner hole reinforced plate based on a brazed plate heat exchanger, comprising a plate body, wherein corner holes are arranged at four corners of the plate body;

[0006] A flanging mechanism is provided at the corner hole on the plate body;

[0007] The flanging mechanism comprises a circular vertical edge portion, the vertical edge portion is integrated with the plate body and the inner side is flush with the inner wall of the corner hole, and a first reinforcement portion is provided between the outer side of the vertical edge portion and the plate body;

[0008] A positioning groove is provided inside the upper corner hole of the plate body, the positioning groove is located directly below the vertical side portion and is in clearance with the vertical side portion, and a second reinforcement portion is provided between the positioning groove and the vertical side portion;

[0009] A lower bevel matched with the first reinforcement portion is provided at the connection between the bottom end of the positioning groove and the plate body;

[0010] An upper oblique opening matching with the second reinforcing portion is arranged on the outer side of the top of the vertical side portion.

[0011] Furthermore, a peripheral edge is provided at the edge of the plate body, and the peripheral edge is a bevel structure.

[0012] Furthermore, a plurality of the plate bodies are stacked and arranged, and a plurality of the surrounding edges on the plate bodies are stacked in sequence.

[0013] Furthermore, the gaps between the vertical sides of the plate body are arranged in the positioning grooves on the adjacent plate bodies, and the lower surface of the second reinforcement portion is flush with the upper surface of the upper bevel.

[0014] Furthermore, the width of the vertical side portion is consistent with the width of the positioning groove, and the outer side of the vertical side portion is flush with the inner wall of the positioning groove.

[0015] Furthermore, the upper surface of the first reinforcement portion, the lower surface of the second reinforcement portion and the lower bevel are all distributed parallel to the lower bevel.

[0016] The utility model has the following beneficial effects:

[0017] The utility model arranges a flanging mechanism on the outer side of the corner hole of the plate. During the stacking and assembly of the heat exchanger, not only the surrounding edge of the plate provides a positioning function, but the mutual cooperation of the flanging mechanism can also position and limit, avoiding the misalignment problem in the assembly and arrangement process, ensuring the assembly effect and improving the assembly efficiency. In addition, the flanging also has a brazing layer during brazing, so a welding point is also generated in the flanging, which can improve the sealing performance. In addition, the mutual interference of the corner hole positions can improve the compressive strength at the corner hole positions, avoiding the occurrence of internal leakage.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a structural schematic diagram of a corner hole reinforced plate based on a brazed plate heat exchanger of the utility model;

[0021] Figure 2 It is a structural cross-sectional view of the corner hole and flanging mechanism of the utility model;

[0022] Figure 3 It is a structural cross-sectional view of the connection of the flanging mechanism after two plate bodies are stacked;

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1-plate body, 2-corner hole, 3-flanging mechanism, 301-vertical edge, 302-first reinforcement part, 303-positioning groove, 304-second reinforcement part, 305-lower oblique opening, 306-upper oblique opening. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-3 As shown, the utility model is a corner hole reinforced plate based on a brazed plate heat exchanger, comprising a plate body 1, and corner holes 2 are arranged at the four corners of the plate body 1;

[0027] A flanging mechanism 3 is provided at the corner hole 2 on the plate body 1;

[0028] The flanging mechanism 3 includes a circular vertical edge portion 301, which is integrated with the plate body 1 and the inner side of which is flush with the inner wall of the corner hole 2. A first reinforcement portion 302 is provided between the outer side of the vertical edge portion 301 and the plate body 1.

[0029] A positioning groove 303 is provided inside the upper corner hole 2 of the plate body 1. The positioning groove 303 is located directly below the vertical side portion 301 and has a clearance fit with the vertical side portion 301. A second reinforcement portion 304 is provided between the positioning groove 303 and the vertical side portion 301.

[0030] A lower oblique opening 305 matching with the first reinforcing portion 302 is provided at the connection between the bottom end of the positioning groove 303 and the plate body 1;

[0031] An upper oblique opening 306 cooperating with the second reinforcing portion 304 is provided on the outer side of the top of the vertical side portion 301 .

[0032] Among them, a surrounding edge is provided at the edge of the plate body 1, and the surrounding edge is a bevel structure.

[0033] Among them, a plurality of plate bodies 1 are stacked and arranged, and the surrounding edges on a plurality of plate bodies 1 are stacked in sequence.

[0034] Among them Figure 3 As shown, the vertical side portions 301 of the plate body 1 are spaced apart in the positioning grooves 303 on the adjacent plate body 1 , and the lower surface of the second reinforcement portion 304 is flush with the upper surface of the upper bevel 306 .

[0035] Among them Figure 2-3As shown, the width of the vertical side portion 301 is consistent with the width of the positioning groove 303 , and the outer side of the vertical side portion 301 is flush with the inner wall of the positioning groove 303 .

[0036] Among them Figure 2-3 As shown, the upper surface of the first reinforcement portion 302 , the lower surface of the second reinforcement portion 304 and the lower oblique opening 305 are all distributed parallel to the lower oblique opening 305 .

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A corner hole reinforced plate based on a brazed plate heat exchanger, comprising a plate body (1), wherein corner holes (2) are provided at four corners of the plate body (1), and the characteristics are: A flanging mechanism (3) is provided at the corner hole (2) on the plate body (1); The flanging mechanism (3) comprises a circular vertical edge portion (301), the vertical edge portion (301) being integral with the plate body (1) and the inner side of which is flush with the inner wall of the corner hole (2), and a first reinforcement portion (302) being provided between the outer side of the vertical edge portion (301) and the plate body (1); A positioning groove (303) is provided inside the upper corner hole (2) of the plate body (1); the positioning groove (303) is located directly below the vertical side portion (301) and is clearance-matched with the vertical side portion (301); a second reinforcement portion (304) is provided between the positioning groove (303) and the vertical side portion (301); A lower oblique opening (305) matching with the first reinforcing portion (302) is provided at the connection between the bottom end of the positioning groove (303) and the plate body (1); An upper oblique opening (306) cooperating with the second reinforcing portion (304) is provided on the outer side of the top of the vertical side portion (301).

2. The corner hole reinforced plate based on the brazed plate heat exchanger according to claim 1, characterized in that: The plate body (1) is provided with a peripheral edge at the edge thereof, and the peripheral edge is a bevel structure.

3. The corner hole reinforced plate based on the brazed plate heat exchanger according to claim 2, characterized in that: A plurality of the plate bodies (1) are stacked and arranged, and the surrounding edges on a plurality of the plate bodies (1) are stacked in sequence.

4. The corner hole reinforced plate based on the brazed plate heat exchanger according to claim 3, characterized in that: The vertical edge portion (301) of the plate body (1) is spaced within the positioning groove (303) on the adjacent plate body (1), and the lower surface of the second reinforcement portion (304) is flush with the upper surface of the upper bevel (306).

5. The corner hole reinforced plate based on the brazed plate heat exchanger according to claim 1, characterized in that: The width of the vertical side portion (301) is consistent with the width of the positioning groove (303), and the outer side of the vertical side portion (301) is flush with the inner wall of the positioning groove (303).

6. The corner hole reinforced plate based on the brazed plate heat exchanger according to claim 1, characterized in that: The upper surface of the first reinforcing portion (302), the lower surface of the second reinforcing portion (304) and the lower oblique opening (305) are all distributed parallel to the lower oblique opening (305).

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