CN215063996U

CN215063996U - Novel plate-fin heat exchanger thermal stress relief groove

Info

Publication number: CN215063996U
Application number: CN202121015877.XU
Authority: CN
Inventors: 殷中磊; 戴永阳
Original assignee: Suzhou Xinhengteng Heat Transfer Technology Co ltd
Current assignee: Suzhou Xinhengteng Heat Transfer Technology Co ltd
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2021-12-07
Anticipated expiration: 2031-05-13

Abstract

The utility model discloses a novel plate-fin heat exchanger thermal stress relief groove, including two apron, a plurality of baffles, a plurality of outer fin and a plurality of inner fin all are located between two laps, two first flutings have all been seted up to the positive both sides side of apron and the positive both sides side of baffle, two second flutings have all been seted up to the positive both sides side of apron and the positive both sides side of baffle, the third fluting has been seted up to the front of apron and the positive equal symmetry of baffle, two first flutings, two second flutings and third fluting are the setting of V font. The utility model discloses the cooperation that utilizes apron and baffle is used, has all seted up the V word groove that first fluting, second fluting and third fluting combination formed on apron and the baffle, and when the core took place to expand, this V word groove heat can make the apron disconnection, and the thermal stress of middle production can't transmit upper and lower both sides through the apron, protects it, provides the life of core.

Description

Novel plate-fin heat exchanger thermal stress relief groove

Technical Field

The utility model relates to a plate-fin heat exchanger field, in particular to novel plate-fin heat exchanger thermal stress relief groove.

Background

The plate-fin heat exchanger is a heat exchanger using fins as heat transfer elements, has the characteristics of high heat transfer efficiency, compact structure, light weight and the like, is widely applied to engineering machinery, air compressors, hydraulic systems, electric systems and rail transit systems, and comprises a partition plate, fins, sealing strips, flow deflectors, an iron core and the like, when the core works, the core body can expand and contract alternately along the direction shown in the figure because an inner channel passes through a high-temperature medium and an outer channel passes through a low-temperature medium, because the upper part and the lower part of the core body are formed by brazing short sealing strips and the upper part and the lower part of the core body can be argon-welded with end sockets, the upper part and the lower part of the core body can be restrained by welding lines when expanding, thereby the expansion deformation of the middle part of the core body is maximum, the cover plate is made of a thicker aluminum plate, the whole aluminum plate can inhibit the deformation of the core body when expanding and contracting, and the thermal stress generated by the deformation in the interior can not be released, the strong thermal stress can damage the joint failure of the outermost separator and the gasket, thereby causing the leakage of the separator and the gasket.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel plate-fin heat exchanger thermal stress relief groove to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel plate-fin heat exchanger thermal stress relief groove, is including two apron, a plurality of baffle, a plurality of outer fin and a plurality of inner fin, and is a plurality of baffle, a plurality of outer fin and a plurality of inner fin all are located between two apron, two first flutings have all been seted up to the positive both sides side of apron and the positive both sides side of baffle, two second flutings have all been seted up to the positive both sides side of apron and the positive both sides side of baffle, the third fluting has been seted up to the front of apron and the equal symmetry in front of baffle, two first fluting, two second fluting and third fluting are the setting of V font.

Preferably, the outer fin is located between two partition plates, the inner fin is located between two partition plates, and the adjacent outer fin and inner fin are located on two side sides of the partition plates.

Preferably, the top and the bottom of the outer fin are both fixedly connected with short sealing strips, and the two sides of the inner fin are both fixedly connected with long sealing strips.

Preferably, the front and the back of the partition board are both fixedly connected with welding plates.

Preferably, one side of each of the two cover plates opposite to each other is fixedly welded with the partition plate through a welding plate.

Preferably, the front and the back of the short seal strip are fixedly welded with the partition plate through the welding plate, and the front and the back of the long seal strip are fixedly welded with the partition plate through the welding plate.

The utility model discloses a technological effect and advantage:

(1) the utility model discloses utilize the cooperation of apron and baffle to use, all set up the V word groove that first fluting, second fluting and third fluting combined and become on apron and the baffle, when the core takes place to shrink, this thermal stress V word groove has the effect of release deformation, when the core takes place to expand, this V word groove heat can make the apron break off, the thermal stress that produces in the middle can't pass through the apron and transmit upper and lower both sides to the brazing of protection upper and lower both sides short seal and baffle combines the department, provides the life of core;

(2) the utility model discloses utilize the mode of setting up of baffle, the front and the back of baffle all are provided with the welding board, and the welding board is formed by the combined material preparation, and when brazing, high temperature makes the combined material melt, and the cooling makes the combined material solidify again, makes each part braze together to improve its welded stability and leakproofness.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is the overall structure schematic diagram of the cover plate and the partition plate of the present invention.

Fig. 3 is a schematic front structural view of the present invention.

In the figure: 1. a cover plate; 11. a first slot; 12. a second slot; 13. a third slot is formed; 2. a partition plate; 21. welding the plate; 3. a short seal; 4. an outer fin; 5. a long seal; 6. and an inner fin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a novel plate-fin heat exchanger thermal stress relief groove as shown in figures 1-3, which comprises two cover plates 1, a plurality of partition plates 2, a plurality of outer fins 4 and a plurality of inner fins 6, wherein the plurality of partition plates 2, the plurality of outer fins 4 and the plurality of inner fins 6 are all positioned between the two cover plates 1, the inner channel formed by the inner fins 6 passes through a high temperature medium, the outer channel formed by the outer fins 4 passes through a low temperature medium, so that the expansion direction 7 as shown in figure 3 is generated, two first open grooves 11 are respectively arranged on two sides of the front surface of the cover plate 1 and two sides of the front surface of the partition plate 2, two second open grooves 12 are respectively arranged on two sides of the front surface of the cover plate 1 and two sides of the front surface of the partition plate 2, third open grooves 13 are respectively symmetrically arranged on the front surface of the cover plate 1 and the front surface of the partition plate 2, the two first open grooves 11, the two second open grooves 12 and the third open grooves 13 are arranged in a V shape, as shown in fig. 2, the cover plate 1 and the partition plate 2 are symmetrically provided with a first groove 11, a second groove 12 and a third groove 13 in a V shape, so that when the inner fin 6 and the outer fin 4 are deformed by heat, a certain thermal stress can be released from the inner fin 6 and the outer fin 4, and the inner fin 6 and the outer fin 4 are protected.

Outer fin 4 is located between two baffles 2, inner fin 6 is located between two baffles 2, adjacent outer fin 4 and inner fin 6 are located the both sides side of baffle 2, the equal fixedly connected with short strip of paper used for sealing 3 in top and the bottom of outer fin 4, the equal fixedly connected with long strip of paper used for sealing 5 in the both sides of inner fin 6, long strip of paper used for sealing 5 can inject the gas or the liquid that inner fin 6 flows, short strip of paper used for sealing 3 can inject the gas or the liquid that outer fin 4 flows to guarantee the leakproofness of its connection.

The equal fixedly connected with of front and the back of baffle 2 welds board 21, weld board 21 is formed by the combined material preparation, when brazing, high temperature makes the combined material melt, cool down again and make the combined material solidify, make baffle 2 and corresponding long strip of paper used for sealing 5, spare parts such as short strip of paper used for sealing 3 are brazed together, thereby improve its welded stability and leakproofness, two apron 1 relative one sides all are through

welding board

21 and 2 fixed weld of baffle, the front and the back of short strip of paper used for sealing 3 all are through

welding board

21 and 2 fixed weld of baffle, the front and the back of long strip of paper used for sealing 5 all are through

welding board

21 and 2 fixed weld of baffle.

The utility model discloses the theory of operation: when the baffle plate is installed, firstly, the inner fin 6 and the two long seals 5 are brazed together by using the welding plate 21 on the front surface of the baffle plate 2, then the other baffle plate 2 is taken out, the baffle plate 2 is brazed on the front surface of the inner fin 6 by using the welding plate 21, then the outer fin 4 and the two short seals 3 are brazed on the front surface of the other baffle plate 2 by using the welding plate 21, then the steps are repeated, a certain amount of the inner fin 6 and the outer fin 4 are brazed together, and finally the two cover plates 1 are taken out and brazed on the two baffle plates 2 on the outermost side.

When the heat stress groove type heat exchanger works, an inner channel formed by the inner fin 6 passes through a high-temperature medium, an outer channel formed by the outer fin 4 passes through a low-temperature medium, when the inner fin 6 contracts, the first groove 11, the second groove 12 and the third groove 13 have the function of releasing deformation, the inner fin 6 and the long seal 5 are protected, when the outer fin 4 expands, the cover plate 1 can be disconnected from the first groove 11, the second groove 12 and the third groove 13 by the heat stress groove, and the heat stress generated in the middle cannot be transmitted to the upper side and the lower side through the cover plate 1, so that the brazing joint of the short seal 3 and the partition plate 2 on the upper side and the lower side is protected, and the service lives of the outer fin 4 and the inner fin 6 are prolonged.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a novel plate-fin heat exchanger thermal stress relief groove, includes two apron (1), a plurality of baffle (2), a plurality of outer fin (4) and a plurality of inner fin (6), its characterized in that, a plurality of baffle (2), a plurality of outer fin (4) and a plurality of inner fin (6) all are located between two apron (1), two first fluting (11) have all been seted up to apron (1) positive both sides side and baffle (2) positive both sides side, two second fluting (12) have all been seted up to apron (1) positive both sides side and baffle (2) positive both sides side, third fluting (13) have been seted up, two to the front of apron (1) and the positive equal symmetry of baffle (2) first fluting (11), two second fluting (12) and third fluting (13) are the setting of V font.

2. The novel plate-fin heat exchanger thermal stress relief groove as recited in claim 1, characterized in that the outer fin (4) is located between two partition plates (2), the inner fin (6) is located between two partition plates (2), and the adjacent outer fin (4) and inner fin (6) are located on both sides of the partition plates (2).

3. The novel plate-fin heat exchanger thermal stress relief groove as recited in claim 1, characterized in that short sealing strips (3) are fixedly connected to the top and bottom of the outer fin (4), and long sealing strips (5) are fixedly connected to both sides of the inner fin (6).

4. The novel plate-fin heat exchanger thermal stress relief groove of claim 1, wherein the front and back surfaces of the partition (2) are fixedly connected with welded plates (21).

5. The novel plate-fin heat exchanger thermal stress relief groove as recited in claim 1, characterized in that the opposite sides of the two cover plates (1) are fixedly welded with the partition plate (2) by welding plates (21).

6. The novel plate-fin heat exchanger thermal stress relief groove as claimed in claim 3, wherein the front and back faces of the short seal (3) are fixedly welded with the partition (2) through the welding plate (21), and the front and back faces of the long seal (5) are fixedly welded with the partition (2) through the welding plate (21).