CN112683099A

CN112683099A - Plate bundle for plate-fin heat exchanger and plate-fin heat exchanger

Info

Publication number: CN112683099A
Application number: CN202110036834.8A
Authority: CN
Inventors: 任来超; 蒋健安; 冯付韬; 付敏翔; 丁旭; 蒋卫波; 范云涛; 杨代坤; 石景祯; 杨超
Original assignee: Hangzhou Micputer Energy Saving Technology Co ltd
Current assignee: Hangzhou Micputer Energy Saving Technology Co ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-04-20

Abstract

The invention provides a plate bundle for a plate-fin heat exchanger and the plate-fin heat exchanger, belonging to the technical field of plate-fin heat exchangers, wherein the plate bundle for the plate-fin heat exchanger comprises: a plurality of fins and partition plates are sequentially stacked; the fins are provided with through holes, supporting blocks are arranged in the through holes, and the upper ends and the lower ends of the supporting blocks are respectively abutted to the upper partition plate and the lower partition plate; according to the plate bundle for the plate-fin heat exchanger, the supporting block is additionally arranged in the channel, so that the middle pressure-bearing capacity of the plate bundle is improved; meanwhile, the supporting block does not change the appearance structure of the plate bundle and increase the appearance size of the plate bundle, so that the plate bundle is regular and beautiful in appearance.

Description

Plate bundle for plate-fin heat exchanger and plate-fin heat exchanger

Technical Field

The invention relates to the technical field of plate-fin heat exchangers, in particular to a plate bundle for a plate-fin heat exchanger and the plate-fin heat exchanger.

Background

The plate bundle of the plate-fin heat exchanger is generally composed of side plates, partition plates, fins and seals. An interlayer formed by fins and sealing strips is arranged between two adjacent partition plates and is called a channel. The sandwich layers are stacked according to different fluid modes and welded into a whole to form a plate bundle, the plate bundle is the core of the plate-fin heat exchanger, and necessary end sockets, connecting pipes, supports and the like are matched to form the plate-fin heat exchanger.

The existing plate-fin heat exchanger has limited pressure bearing capacity and has limitation on heat exchange between media with higher pressure.

Disclosure of Invention

Therefore, the technical problem to be solved by the present invention is to overcome the defect of insufficient pressure-bearing capacity of the plate bundle of the plate-fin heat exchanger in the prior art, and thereby provide a plate bundle for the plate-fin heat exchanger.

The invention also provides a plate-fin heat exchanger with the plate bundle.

In order to solve the above technical problem, the present invention provides a plate bundle for a plate-fin heat exchanger, comprising: a plurality of fins and partition plates are sequentially stacked;

the fin is provided with a through hole, a supporting block is arranged in the through hole, and the upper end and the lower end of the supporting block are respectively abutted to the upper partition plate and the lower partition plate.

Optionally, two opposite sides of the fin are respectively provided with a seal for supporting between an upper partition plate and a lower partition plate, and the support block is located between the two symmetrical seals.

Optionally, the through holes and the supporting blocks have at least two uniformly arranged fins on each layer.

Optionally, the location of the support block on each layer of the fins is the same.

Optionally, the support blocks are identical in shape.

Optionally, the cross-section of the support block is any one of oval, shuttle, circular, diamond, or rectangular.

Optionally, the shape of the through hole corresponds to the shape of the cross section of the supporting block, and gaps are formed between the supporting block and the fins on the periphery in the through hole.

Optionally, the upper end and the lower end of the supporting block are respectively fixedly connected with the upper partition plate and the lower partition plate.

Optionally, the supporting block and the partition plate are fixedly connected by brazing and/or diffusion welding, respectively.

The present invention also provides a plate-fin heat exchanger, comprising: the plate pack of any one of the above aspects.

The technical scheme of the invention has the following advantages:

1. according to the plate bundle for the plate-fin heat exchanger, the supporting block is additionally arranged in the channel, so that the middle pressure-bearing capacity of the plate bundle is improved; meanwhile, the supporting block does not change the appearance structure of the plate bundle and increase the appearance size of the plate bundle, so that the plate bundle is regular and beautiful in appearance.

2. According to the plate bundle for the plate-fin heat exchanger, provided by the invention, the gap is reserved between the supporting block and the fin, and the gap is used for the medium in the channel to pass through, so that the overstock of the medium can be prevented, and the flowing of the fluid medium is ensured.

3. According to the plate bundle for the plate-fin heat exchanger, the same supporting block is arranged at the same position of each channel, and each supporting block is welded with the partition plate, so that the upper part and the lower part of the plate bundle form a coherent whole, and the plate bundle cannot be pulled open under the action of force; the plate bundle is extended from the uppermost layer channel to the lowermost layer channel, and the welding strength of brazing or diffusion welding is improved through the force transmission effect between the supporting blocks, so that the pressure bearing capacity of the heat exchanger is enhanced.

4. The plate-fin heat exchanger provided by the invention has the advantages of any one of the above aspects due to the plate bundle of any one of the above aspects.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is an exploded view of one embodiment of a plate bundle for a plate fin heat exchanger in an example of the invention.

Fig. 2 is an exploded view of a plate bundle before modification.

Fig. 3 is a perspective view of an assembly structure of the supporting block and the partition in fig. 1.

Fig. 4 is a perspective view of an assembly structure of the fin-attached structure of fig. 3.

Fig. 5 is a schematic view of the distribution structure of the supporting blocks in the up-down direction.

FIG. 6 is a top cross-sectional view of the support block in the fin.

FIG. 7 is a top view of an alternative embodiment of a support block.

FIG. 8 is a top view of a second alternative embodiment of a support block.

FIG. 9 is a top view of a third alternative embodiment of a support block.

FIG. 10 is a top view of a fourth alternative embodiment of a support block.

Description of reference numerals:

1. an upper edge plate; 2. a lower edge plate; 3. a fin; 4. a partition plate; 5. a seal; 6. a through hole; 7. and (7) a supporting block.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The embodiment provides a plate-fin heat exchanger, and this plate-fin heat exchanger includes plate bundle, head and takeover respectively with the plate bundle is connected, and this plate-fin heat exchanger is used for the heat transfer between the fluid medium. Wherein the plate bundle, as shown in fig. 1, comprises: the novel sandwich plate comprises an upper edge plate 1 and a lower edge plate 2, wherein a plurality of sandwich channels are formed between the upper edge plate 1 and the lower edge plate 2 through fins 3, partition plates 4 and seals 5. Wherein the fins 3 and the separators 4 are provided in plurality and are stacked in sequence; the seal 5 is arranged on two opposite sides of the fin 3, and the seal 5 is used for being supported between the upper partition plate 4 and the lower partition plate 4. As shown in fig. 2, for the plate bundle structure before improvement, the area of the middle fin 3 of the plate bundle is larger, while the welding contact area between the fin 3 and the partition plate 4 is smaller, and no effective support can be realized in the middle; once the fins 3 are locally bulged, the overall product is rapidly bulged and damaged, and the pressure bearing capacity of the product is low.

As shown in fig. 1, in the plate bundle provided in this embodiment, the fins 3 are provided with through holes 6, support blocks 7 are disposed in the through holes 6, and upper and lower ends of the support blocks 7 are respectively abutted to the upper and lower partition plates 4. The middle pressure-bearing capacity of the plate bundle is improved by adding the supporting block 7 in the channel; meanwhile, the supporting block 7 is positioned between the two symmetrical seals 5, so that the appearance structure of the plate bundle is not changed, the appearance size of the plate bundle is not increased, and the appearance of the plate bundle is regular and beautiful.

As shown in fig. 3 and 4, the through holes 6 and the supporting blocks 7 are uniformly arranged in two on each layer of the fins 3. In addition, as an alternative embodiment, the supporting blocks 7 may be provided in any other number according to the area of the fins 3.

As shown in fig. 5, the positions of the supporting blocks 7 on each layer of the fins 3 are the same, and the shapes of the supporting blocks 7 are the same. The plate bundle extends from the uppermost layer channel to the lowermost layer channel, and the welding strength of brazing or diffusion welding is improved through the force transmission effect between the supporting blocks 7, so that the pressure bearing capacity of the heat exchanger is enhanced.

As shown in fig. 6, the shape of the through hole 6 corresponds to the shape of the cross section of the supporting block 7, and the supporting block 7 has a gap between the fin 3 and the through hole 6. The gap is used for the medium in the channel to pass through, so that the medium can be prevented from being accumulated, and the flow of the fluid medium is ensured. The arrows shown in fig. 6 are the media flow directions.

The cross section of the supporting block 7 may be: rectangular, or any of a shuttle shape as shown in fig. 7, a diamond shape as shown in fig. 8, a circular shape as shown in fig. 9, and an oval shape as shown in fig. 10. The cross-sectional shape of the supporting block 7 can be flexibly changed according to technical design parameters, and is not limited to a certain shape.

In the plate bundle provided by this embodiment, the supporting blocks 7 and the partition plates 4 are fixedly connected by brazing and/or diffusion welding, respectively. For welding requirements, the thickness of the supporting block 7 must be equal to that of the seal 5, so as to ensure close fit between the supporting block 7 and the partition plate 4. The support block 7 may be made of stainless steel, titanium, copper or other materials.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.

Claims

1. A plate bundle for a plate-fin heat exchanger, characterized in that it comprises: a plurality of fins (3) and baffles (4) arranged in sequence;

The fin (3) is provided with a through hole (6), a support block (7) is arranged in the through hole (6), and the upper and lower ends of the support block (7) are respectively connected with the upper and lower two partition plates ( 4) Abutting.

2 . The plate bundle for a plate-fin heat exchanger according to claim 1 , wherein seals ( 5 ) are respectively provided on two opposite sides of the fins ( 3 ). The seal (5) is used to be supported between the upper and lower partition plates (4), and the support block (7) is located between the two symmetrical seals (5).

3. The plate bundle for a plate-fin heat exchanger according to claim 1, characterized in that, in the through holes (6) and the support blocks (7), the fins (3) in each layer , with at least two evenly set.

4. The plate bundle for a plate-fin heat exchanger according to claim 1, characterized in that, the positions of the support blocks (7) on each layer of the fins (3) are the same.

5. The plate bundle for a plate-fin heat exchanger according to claim 1, wherein the shape of the support blocks (7) is the same.

6. The plate bundle for a plate-fin heat exchanger according to claim 1, wherein the cross section of the support block (7) is an oval, a shuttle, a circle, a rhombus or a rectangle. either.

7. The plate bundle for a plate-fin heat exchanger according to claim 1, wherein the shape of the through hole (6) corresponds to the shape of the cross section of the support block (7), The support block (7) has a gap between the through hole (6) and the fins (3) on all sides in the through hole (6).

8. The plate bundle for a plate-fin heat exchanger according to any one of claims 1-7, wherein the upper and lower ends of the support block (7) are respectively connected with the upper and lower two spacers The plate (4) is fixedly connected.

9. The plate bundle for a plate-fin heat exchanger according to claim 8, characterized in that brazing and/or diffusion are respectively adopted between the support block (7) and the partition plate (4) Fixed connection by welding.

10. A plate-fin heat exchanger, characterized in that, comprising: the plate bundle according to any one of claims 1-9, and a head and a nozzle connected to the plate bundle.