Heat exchanger sheet based on pocking mark technology

Abstract

The utility model relates to the technical field of heat exchanger sheets, in particular to a heat exchanger sheet based on a pocking mark process, which is characterized in that a sheet body and fins are effectively and firmly welded, and the strength of the sheet body is improved; comprising fins; the stitch welding device further comprises a main body mechanism, a positioning mechanism and pits, the positioning mechanism is installed on the main body mechanism, the pits are installed on the main body mechanism, the whole stitch welding is facilitated through the main body mechanism, stitch welding of the main body mechanism is positioned through the positioning mechanism, and it can be guaranteed that the flatness of the main body mechanism is effectively improved through the pits.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger plates, in particular to a heat exchanger plate based on a pitting process. Background Art

[0002] The plate is the main part of the heat exchanger assembly. After the plates are stacked in positive and negative directions and completed, a fixture is used to stack and weld the plates together under high temperature and high vacuum conditions in a vacuum brazing furnace. The pitting process is a technology for processing tiny raised points (i.e., pits) on the surface of metals or other materials. These pits can be evenly distributed or arranged according to a specific pattern. Applying the pitting process to the heat exchanger plate mainly utilizes the pit structure to increase the surface area of the plate, thereby improving the heat transfer efficiency.

[0003] Existing heat exchanger plates, such as the prior art with the application number CN201210323203.5, include positioning holes, sealing grooves, medium inlets and outlets, flow guiding areas, flow guiding protrusions, flow guiding channels, heat exchanger plate edges, upper convex surfaces, lower convex surfaces, and upper heat exchanger plates, etc. By arranging the flow guiding channels on both sides of the flow guiding area in a zigzag shape and the middle flow channels in a straight line shape, it overcomes the defect of uneven fluid resistance of the traditional straight flow guiding channels, making the fluid resistance of each flow channel in the flow guiding area basically equivalent. The heat transfer medium can enter the heat exchanger through the flow guiding area at the same time, realizing uniform distribution of the medium in the heat transfer area and improving the heat transfer efficiency of the heat exchanger.

[0004] However, in the assembly process of the prior art, affected by the flatness of the plate itself, the plates cannot be effectively fitted together, resulting in ineffective welding during the brazing process, insufficient strength between the plates, and ultimately fatigue cracking between the plates during use and further leakage failure. Summary of the Utility Model

[0005] To solve the above technical problems, the utility model provides a heat exchanger plate based on a pitting process, in which the plates and fins are effectively and firmly welded, improving the strength of the plates.

[0006] A heat exchanger plate based on a pitting process of the utility model includes fins; it also includes a main body mechanism, a positioning mechanism, and pits. The positioning mechanism is installed on the main body mechanism, and the pits are installed on the main body mechanism. Through the main body mechanism, it is convenient to stack and weld the whole together. Through the positioning mechanism, it is convenient to position the stacking and welding of the main body mechanism. Through the pits, the flatness of the main body mechanism can be effectively improved; through the main body mechanism, it is convenient to stack and weld the whole together. Through the positioning mechanism, it is convenient to position the stacking and welding of the main body mechanism, improving the accuracy of stacking and welding. Through the pits, the flatness of the main body mechanism can be effectively improved, and the fitting between the main body mechanisms can be effectively enhanced.

[0007] Preferably, the main body mechanism includes a first plate, fins, a second plate and flanges. Flanges are installed on both the first plate and the second plate. The first plate and the second plate are in opposite horizontal directions. The fins can be stacked and welded between the first plate and the second plate, and positioning holes are provided on the fins. The fins are stacked on the second plate in a way of preventing misalignment according to the hole positions. The first plate is rotated 180° and stacked on the fins, so that the flanges between the first plate and the second plate and the positioning mechanism are in contact and fit.

[0008] Preferably, the positioning mechanism includes bosses, grooves and a positioning groove. Two bosses, two grooves and a positioning groove are installed on both the first plate and the second plate. The fins are stacked on the second plate in a way of preventing misalignment according to the hole positions, aligning the positioning holes of the fins with the bosses. The first plate is rotated 180° and stacked on the fins, so that the flanges between the first plate and the second plate are in contact and fit, and at the same time, the bosses of the first plate are in contact and fit with the grooves of the second plate, and the grooves of the first plate are in contact and fit with the bosses of the second plate, improving the accuracy of stacked welding and the overall strength. By distinguishing the directions of the first plate and the second plate through the positioning groove, the practicability is improved.

[0009] Preferably, dimples are provided on the first plate and the second plate. Through the above settings, the stress at the plane of the plates can be released, the flatness of the plates can be improved, and further, the flatness of the first plate and the second plate can be effectively improved, the fit between the first plate and the second plate can be effectively enhanced, a capillary action can be formed under the high-temperature and high-vacuum conditions in the vacuum brazing furnace, the solder coating on the surfaces of the first plate and the second plate can be melted, accumulated and solidified, preventing the loss of solder at the non-contact surfaces, and ensuring the strength between the first plate and the second plate.

[0010] Preferably, the shape of the dimples is square. Through the above settings, the stress of the first plate and the second plate can be released better, and at the same time, the requirements for the thinning rate of the first plate and the second plate are met.

[0011] Preferably, the designed values of the side length and depth of the dimples need to be within a certain size range. Through the above settings, the effect of improving the flatness of the first plate and the second plate after stamping forming can be ensured.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: the overall stacked welding is facilitated through the main body mechanism, the positioning of the stacked welding of the main body mechanism is facilitated through the positioning mechanism, the accuracy of stacked welding is improved, the flatness of the main body mechanism can be effectively improved through the dimples, and the fit between the main body mechanisms can be effectively enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the first axonometric structure schematic diagram of the present utility model;

[0014] Figure 2is the second axonometric structure schematic diagram of the present utility model;

[0015] Figure 3 is the third axonometric structure schematic diagram of the present utility model;

[0016] Figure 4 is the fourth axonometric structure schematic diagram of the present utility model;

[0017] Figure 5 is the top view structure schematic diagram of the present utility model;

[0018] Reference numerals in the drawings: 01, main body mechanism; 11, first plate; 12, fin; 13, second plate; 14, flanging; 02, positioning mechanism; 21, boss; 22, groove; 23, positioning groove; 31, pitting. Detailed implementation manners

[0019] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0020] Embodiment 1

[0021] As Figures 1 to 5 shown, a heat exchanger plate based on the pitting process includes a fin 12, and also includes a main body mechanism 01, a positioning mechanism 02 and pitting 31. The positioning mechanism 02 is installed on the main body mechanism 01, and the pitting 31 is installed on the main body mechanism 01;

[0022] Through the main body mechanism 01, it is convenient to stack and weld the whole. Through the positioning mechanism 02, it is convenient to position the stacking and welding of the main body mechanism 01. Through the pitting 31, the flatness of the main body mechanism 01 can be effectively improved;

[0023] The main body mechanism 01 includes a first plate 11, a fin 12, a second plate 13 and a flanging 14. Flangings 14 are installed on both the first plate 11 and the second plate 13. The first plate 11 and the second plate 13 are in opposite horizontal directions. The fin 12 can be stacked and welded between the first plate 11 and the second plate 13, and positioning holes are provided on the fin 12;

[0024] The positioning mechanism 02 includes a boss 21, a groove 22 and a positioning groove 23. Two bosses 21, two grooves 22 and one positioning groove 23 are installed on both the first plate 11 and the second plate 13;

[0025] The fin 12 is anti-misaligned by hole positions. The positioning holes of the fin 12 are aligned and stacked on the second plate 13. The first plate 11 is rotated 180° and stacked on the fin 12, so that the flanges 14 of the first plate 11 and the second plate 13 are in contact and fit. At the same time, the first plate 11, the boss 21 and the groove 22 of the second plate 13 are in contact and fit. The groove 22 of the first plate 11 is in contact and fit with the boss 21 of the second plate 13, improving the accuracy of the stacked welding and the overall strength. By identifying the directions of the first plate 11 and the second plate 13 through the positioning groove 23, the practicability is improved.

[0026] Embodiment 2

[0027] As Figures 1 to 5 shown, a heat exchanger plate based on a pitting process includes a fin 12, and also includes a main body mechanism 01, a positioning mechanism 02 and pitting 31. The positioning mechanism 02 is installed on the main body mechanism 01, and the pitting 31 is installed on the main body mechanism 01;

[0028] The main body mechanism 01 facilitates the overall stacked welding. The positioning mechanism 02 facilitates the positioning of the stacked welding of the main body mechanism 01. The pitting 31 can effectively improve the flatness of the main body mechanism 01;

[0029] The main body mechanism 01 includes a first plate 11, a fin 12, a second plate 13 and a flange 14. Flanges 14 are installed on both the first plate 11 and the second plate 13. The first plate 11 and the second plate 13 are in opposite horizontal directions. The fin 12 can be stacked and welded between the first plate 11 and the second plate 13, and positioning holes are provided on the fin 12;

[0030] The positioning mechanism 02 includes a boss 21, a groove 22 and a positioning groove 23. Two bosses 21, two grooves 22 and a positioning groove 23 are installed on both the first plate 11 and the second plate 13;

[0031] Pitting 31 is provided on the first plate 11 and the second plate 13;

[0032] The shape of the pitting 31 is square;

[0033] The designed values of the side length and depth of the pitting 31 need to be within a certain dimension range;

[0034] Through the above settings, the stress at the plane of the plate can be released, the flatness of the plate can be improved, and thus the flatness of the first plate 11 and the second plate 13 can be effectively improved. The fitting between the first plate 11 and the second plate 13 can be effectively enhanced, and capillary action can be formed under the conditions of high temperature and high vacuum in the vacuum brazing furnace, so that the solder coating on the surfaces of the first plate 11 and the second plate 13 melts, accumulates and solidifies, preventing the loss of solder at the non-contact surface, ensuring the strength between the first plate 11 and the second plate 13. Since the shape of the dimples 31 is square, the stress of the first plate 11 and the second plate 13 can be better released, and at the same time, the thinning rate requirements of the first plate 11 and the second plate 13 are met. The design values of the side length and depth of the dimples 31 need to be within a certain size range to ensure that the flatness of the first plate 11 and the second plate 13 is improved after stamping.

[0035] As Figures 1 to 5 shown, for a heat exchanger plate of the present utility model based on the dimple process, during operation, the fins 12 are stacked on the second plate 13 with the positioning holes of the fins 12 aligned with the bosses 21 in a hole-position anti-misalignment manner. The first plate 11 is rotated 180° and stacked on the fins 12, so that the flanges 14 of the first plate 11 and the second plate 13 are in contact and fit. At the same time, the first plate 11 is in contact and fit with the bosses 21 and the grooves 22 of the second plate 13. The grooves 22 of the first plate 11 are in contact and fit with the bosses 21 of the second plate 13, improving the accuracy of stack welding and enhancing the overall strength. By distinguishing the directions of the first plate 11 and the second plate 13 through the positioning grooves 23, the practicability is improved. Through the above settings, the stress at the plane of the plate can be released, the flatness of the plate can be improved, and thus the flatness of the first plate 11 and the second plate 13 can be effectively improved. The fitting between the first plate 11 and the second plate 13 can be effectively enhanced, and capillary action can be formed under the conditions of high temperature and high vacuum in the vacuum brazing furnace, so that the solder coating on the surfaces of the first plate 11 and the second plate 13 melts, accumulates and solidifies, preventing the loss of solder at the non-contact surface, ensuring the strength between the first plate 11 and the second plate 13. Since the shape of the dimples 31 is square, the stress of the first plate 11 and the second plate 13 can be better released, and at the same time, the thinning rate requirements of the first plate 11 and the second plate 13 are met. The design values of the side length and depth of the dimples 31 need to be within a certain size range to ensure that the flatness of the first plate 11 and the second plate 13 is improved after stamping.

[0036] The main functions achieved by the present utility model are: during the operation of the heat exchanger plate, the plates and the fins are effectively and firmly welded to improve the strength of the plates.

[0037] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A heat exchanger plate based on a dimpling process, comprising fins (12); characterized in that, It further includes a main body mechanism (01), a positioning mechanism (02) and dimples (31). The positioning mechanism (02) is installed on the main body mechanism (01), and the dimples (31) are installed on the main body mechanism (01). The main body mechanism (01) facilitates the overall stacked soldering. The positioning mechanism (02) facilitates the positioning of the stacked soldering of the main body mechanism (01). The flatness of the main body mechanism (01) can be effectively improved through the dimples (31).

2. The heat exchanger plate based on the dimple process according to claim 1, characterized in that, The main body mechanism (01) includes a first plate (11), fins (12), a second plate (13) and flanges (14). Flanges (14) are installed on both the first plate (11) and the second plate (13). The first plate (11) and the second plate (13) are in opposite horizontal directions. The fins (12) can be stacked and soldered between the first plate (11) and the second plate (13). Positioning holes are provided on the fins (12).

3. The heat exchanger plate based on the dimpled process according to claim 2, wherein, The positioning mechanism (02) includes bosses (21), grooves (22) and positioning grooves (23). Two bosses (21), two grooves (22) and one positioning groove (23) are installed on both the first plate (11) and the second plate (13).

4. The heat exchanger plate based on the dimpling process according to claim 2, characterized in that, Dimples (31) are provided on the first plate (11) and the second plate (13).

5. The heat exchanger plate based on the dimpling process according to claim 4, wherein The shape of the dimples (31) is square.

6. The heat exchanger plate according to claim 4 based on a dimple process, characterized in that, The designed values of the side length and depth of the dimples (31) need to be within a certain dimensional range.

Images