Locally-thinned heat exchanger sheet

Abstract

The utility model relates to the technical field of locally-thinned heat exchanger sheets, in particular to a locally-thinned heat exchanger sheet, which can improve the flatness of a boss welding hand surface, increase the boss fitting area, ensure that the sheet forms capillary action in a vacuum brazing furnace under high-temperature and high-vacuum conditions, and improve the heat exchange efficiency. The coating solder on the surface of the sheet is melted, accumulated and solidified, the loss of the solder without the contact surface is prevented, and the sealing and the strength between the bosses of the sheet are ensured; comprising sheets; the corrugated plate further comprises a turned-over edge, two sets of bosses, multiple sets of corrugations and two sets of boss opposite faces, the turned-over edge is arranged on the plate piece, the two sets of bosses are arranged on the plate piece, the multiple sets of corrugations are arranged on the plate piece, and the two sets of boss opposite faces are arranged on the plate piece.

Description

Technical Field

[0001] The utility model relates to the technical field of locally thinned heat exchanger plates, and particularly to a locally thinned heat exchanger plate. Background Art

[0002] The plate is the main part of the heat exchanger assembly. In order to realize the heat exchange function of the plate, a boss structure is designed in the flow channel holes inside the plate. After the plates are stacked in positive and negative directions, a fixture is used to weld the bosses of the plates together through a vacuum brazing furnace under high temperature and high vacuum conditions.

[0003] In the existing locally thinned heat exchanger plates, for example, a locally thinned heat exchanger plate disclosed in the utility model patent with the application number 202322341394.4. This utility model uses a clamping method to clamp and install the heat exchanger plate body. When disassembling and assembling the heat exchanger plate body, it is not necessary to frequently disassemble and assemble bolts, thus providing convenience for users and also improving the practicability of the heat exchanger plate of this utility model.

[0004] During the brazing process, the bosses of the plates are affected by flatness, resulting in easy occurrence of gap problems in the fitting of the bosses, resulting in an insecure welding surface of the bosses, causing virtual welding or insufficient strength between the plates, and resulting in leakage or fatigue cracking leakage failure of the plate bosses during use. Summary of the Utility Model

[0005] To solve the above technical problems, the present utility model provides a plate in the application of the present invention, which can improve the flatness of the opposite surface of the boss welding, can increase the fitting area of the boss, can ensure the formation of capillary action under high temperature and high vacuum conditions in a vacuum brazing furnace, melt, accumulate and solidify the solder on the surface of the plate, prevent the loss of solder on the non-contact surface, and ensure the sealing and strength between the bosses of the plate. A locally thinned heat exchanger plate.

[0006] A locally thinned heat exchanger plate of the present utility model includes a plate; it also includes a flanging, two groups of bosses, multiple groups of corrugations and two groups of opposite surfaces of the bosses. The flanging is arranged on the plate, the two groups of bosses are arranged on the plate, the multiple groups of corrugations are arranged on the plate, and the two groups of opposite surfaces of the bosses are arranged on the plate; through the effective fitting of the opposite surface of the boss and the welding surface of the boss, the cladding solder of the boss and the opposite surface of the boss is melted and accumulated, and the solder near the plane is adsorbed and accumulated. When cooling and solidifying, the accumulated solder forms an effective welding plane, thereby improving the flatness of the opposite surface of the boss welding, increasing the fitting area of the boss, ensuring the formation of capillary action under high temperature and high vacuum conditions in a vacuum brazing furnace, melting, accumulating and solidifying the solder on the surface of the plate, preventing the loss of solder on the non-contact surface, and ensuring the sealing and strength between the bosses of the plate.

[0007] Preferably, multiple sets of plates are assembled in cooperation. The second set of plates is rotated 180° and stacked on the first plate; thus, the contact surfaces between the two sets of flanges and between the bosses and the opposite surfaces of the bosses are in contact and fit.

[0008] Preferably, the two sets of flanges are assembled in contact with each other; the interior of the device is sealed by the contact of the two sets of flanges.

[0009] Preferably, during the stamping process of the boss, a boss plane has been formed; the flatness of the boss plane is satisfied.

[0010] Preferably, corrugations are provided on the plates; the heat exchange function is carried out through the mutual cooperation between the corrugations.

[0011] Preferably, during the stamping process of the opposite surface of the boss, it is easily affected by flatness and a gap is generated when it fits with the boss. Therefore, a stamping and thinning process is adopted for the opposite surface of the boss, and a welding plane with a ribbed and thinned area is formed on the opposite surface of the boss to improve the flatness of the opposite surface of the boss; the outer dimension of the opposite surface of the boss is the same as the outer dimension of the boss, and the thinning depth needs to be within a certain range to ensure a stable welding plane after stamping and thinning.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the effective fitting of the opposite surface of the boss and the welding surface of the boss, the cladding solder of the boss and the opposite surface of the boss is melted and accumulated, and the solder near the plane is adsorbed and accumulated. When cooling and solidifying, the solder accumulation forms an effective welding plane, thereby improving the flatness of the opposite surface of the boss during welding, increasing the fitting area of the boss, ensuring the capillary action of the plates under high temperature and high vacuum conditions in the vacuum brazing furnace, melting, accumulating and solidifying the cladding solder on the plate surface, preventing the loss of solder at the non-contact surface, and ensuring the sealing and strength between the bosses of the plates. Description of the Drawings

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

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

[0015] Figure 3 is the front view sectional axonometric structural schematic diagram of the present utility model;

[0016] Figure 4 is the rear view sectional axonometric structural schematic diagram of the present utility model;

[0017] Figure 5 is the left view sectional axonometric structural schematic diagram of the present utility model;

[0018] Reference numerals in the drawings: 1, plate; 2, flange; 3, boss; 31, outer circle of the boss; 32, boss plane; 4, corrugation; 5, opposite surface of the boss; 51, outer circle of the opposite surface of the boss. Detailed implementation mode

[0019] For the convenience of understanding 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, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0020] Embodiment 1

[0021] As Figures 1 to 5 shown, a locally thinned heat exchanger plate includes plate 1, and also includes a flanging 2, two groups of bosses 3, multiple groups of corrugations 4 and two groups of boss mating surfaces 5. The flanging 2 is arranged on the plate 1, the two groups of bosses 3 are arranged on the plate 1, the multiple groups of corrugations 4 are arranged on the plate 1, and the two groups of boss mating surfaces 5 are arranged on the plate 1;

[0022] Multiple groups of plates 1 are assembled in cooperation, and the second group of plates 1 is rotated 180° and stacked on the first plate 1;

[0023] The two groups of flangings 2 are assembled in mutual fit;

[0024] During the stamping process of the boss 3, a boss plane 32 has been formed;

[0025] The corrugations 4 are arranged on the plate 1;

[0026] During the stamping process of the boss mating surface 5, it is easily affected by flatness and causes a gap when fitting with the boss 3. Therefore, a stamping and thinning process is adopted on the boss mating surface 5 to form a welded plane with a ribbed and thinned circle on the boss mating surface 5, improving the flatness of the boss mating surface 5;

[0027] The boss mating surface 5 uses a stamping and thinning process to ensure effective fitting with the welding surface of the boss 3. Under the conditions of high temperature and high vacuum in vacuum brazing, a capillary action is formed to melt and accumulate the clad solder of the boss 3 and the boss mating surface 5, and adsorb and accumulate the solder near the plane. When cooling and solidifying, the solder accumulates to form an effective welding plane. The plate in the application of the present invention can improve the flatness of the boss welding mating surface, increase the fitting area of the boss, ensure the formation of capillary action under the conditions of high temperature and high vacuum in the vacuum brazing furnace, melt and accumulate and solidify the clad solder on the plate surface, prevent the loss of solder at the non-contact surface, and ensure the sealing and strength between the bosses of the plate.

[0028] As Figures 1 to 5As shown in the figure, for a locally thinned heat exchanger plate of the present utility model, during operation, the counter surface 5 of the boss is processed by stamping and thinning to ensure effective fitting with the welding surface of the boss 3. Under the conditions of high temperature and high vacuum in vacuum brazing, capillary action is formed to melt and accumulate the clad solder on the boss 3 and the counter surface 5 of the boss, and adsorb and accumulate the solder near the plane. When cooling and solidifying, the solder accumulation forms an effective welding plane.

[0029] The main functions achieved by the present utility model are as follows: during the operation of the locally thinned heat exchanger plate, the plate in the application of the present invention can improve the flatness of the counter surface for boss welding, increase the fitting area of the boss, ensure capillary action under the conditions of high temperature and high vacuum in a vacuum brazing furnace, melt, accumulate and solidify the clad solder on the plate surface, prevent the loss of solder at the non-contact surface, and ensure the sealing and strength between the bosses of the plate.

[0030] 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 in this technical field, 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 locally thinned heat exchanger plate, comprising a plate (1); characterized in that: It also comprises a flange (2), two groups of bosses (3), a plurality of groups of corrugations (4) and two groups of boss-to-hand surfaces (5), wherein the flange (2) is arranged on the plate (1), the two groups of bosses (3) are arranged on the plate (1), the plurality of groups of corrugations (4) are arranged on the plate (1), and the two groups of boss-to-hand surfaces (5) are arranged on the plate (1).

2. A locally thinned heat exchanger plate according to claim 1, characterized in that: A plurality of sets of plates (1) are installed in a coordinated manner, and a second set of plates (1) is rotated 180 degrees and stacked on the first set of plates (1).

3. A locally thinned heat exchanger plate according to claim 2, characterized in that: The two sets of flanges (2) are fitted together and assembled.

4. A locally thinned heat exchanger plate according to claim 3, characterized in that: During the stamping process of the boss (3), a boss plane (32) is formed.

5. A locally thinned heat exchanger plate according to claim 4, characterized in that: The corrugations (4) are arranged on the plate (1).

6. A locally thinned heat exchanger plate according to claim 5, characterized in that: During the stamping process, the boss face (5) is easily affected by the flatness, resulting in a gap between the boss and the face (3). Therefore, a stamping and thinning process is adopted on the boss face (5) to form a circle of rib-pressed and thinned welding plane on the boss face (5) to improve the flatness of the boss face (5).

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