CN215572328U

CN215572328U - Plate-fin heat exchanger

Info

Publication number: CN215572328U
Application number: CN202120574577.9U
Authority: CN
Inventors: 曾光华; 王萌萌
Original assignee: Ningbo Tuopu Group Co Ltd
Current assignee: Ningbo Tuopu Group Co Ltd
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2022-01-18
Anticipated expiration: 2031-03-22

Abstract

The utility model discloses a plate-fin heat exchanger, which comprises a top plate, a bottom plate and a heat exchange core body, wherein the heat exchange core body consists of a plurality of heat exchange units; each heat exchange unit is formed by laminating a first plate, a turbulence fin and a second plate from top to bottom; the heat exchange unit is characterized in that a first concave part is arranged on the first plate, a second concave part is arranged on the second plate, a protruding part is arranged in the second concave part in a protruding mode, the first concave part and the protruding part are arranged in an up-down opposite mode, a mounting groove is arranged on the turbulence fin corresponding to the first concave part, the first concave part is embedded into the mounting groove, the lower end face of the first concave part is fixedly attached to the inner end face of the bottom of the mounting groove, the upper end face of the protruding part is fixedly attached to the outer end face of the bottom of the mounting groove, and the lower end face of the second concave part is fixedly attached to the upper end face of the first plate in the heat exchange unit adjacent to the lower portion. The heat exchanger has the advantages of simple structure, and capability of ensuring the strength of the turbulence fins and ensuring the performance of the whole heat exchanger.

Description

Plate-fin heat exchanger

Technical Field

The utility model relates to a heat exchanger, in particular to a plate-fin heat exchanger.

Background

The plate-fin heat exchanger is generally composed of a partition plate and a fin. The fins are arranged between two adjacent partition plates to form an interlayer to form a fluid channel, the interlayer is stacked according to different fluid modes and brazed into a whole to form a plate bundle, and the plate bundle is the core of the plate-fin heat exchanger.

Compared with the traditional heat exchanger, the plate-fin heat exchanger has an expanded secondary surface and a compact structure, and a boundary layer is continuously broken due to disturbance of fins on fluid, so that a larger heat exchange coefficient is obtained, and the high heat conductivity of the thin partition plate and the fins is matched, so that the plate-fin heat exchanger can achieve high heat exchange efficiency.

At present, the common plate-fin heat exchanger usually achieves the purpose of spacing by making raised/recessed ribs on plates, and the raised/recessed ribs arranged between the connected plates are mutually nested and assembled to form a partition, so that the partition plays a role in blocking fluid, and the nested partition design has the following defects: firstly, the turbulence fins arranged between two plate sheets need to be broken at the partition part, so that the strength of the turbulence fins is easily influenced, and meanwhile, the turbulence fins are easily deformed in the transportation and assembly processes; secondly, in the product with the structure, a cavity is easily formed between the convex part and the concave part after the convex part and the concave part are nested, and the gas in the cavity cannot be discharged in the welding process, so that the welding quality is seriously influenced.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a plate-fin heat exchanger which has a simple structure and can effectively ensure the use strength and welding quality of fins so as to ensure the integral use performance.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a plate-fin heat exchanger comprises a top plate, a bottom plate and a heat exchange core body arranged between the top plate and the bottom plate, wherein the heat exchange core body is composed of a plurality of heat exchange units, and the heat exchange units are stacked from top to bottom; each heat exchange unit is formed by laminating a first plate, a turbulence fin and a second plate from top to bottom; the heat exchange unit is characterized in that a first strip-shaped concave part is arranged on the first plate, a second strip-shaped concave part is arranged on the second plate, a strip-shaped protruding part is arranged in the second concave part in a protruding mode, the first concave part and the protruding part are arranged in a vertically opposite mode, the spoiler fins are provided with mounting grooves corresponding to the first concave part, the first concave part is embedded into the mounting grooves, the lower end face of the first concave part and the inner end face of the bottom of the mounting grooves are fixedly attached to each other, the upper end face of the protruding part and the outer end face of the bottom of the mounting grooves are fixedly attached to each other, and the lower end face of the second concave part are adjacent to each other.

The top plate, the bottom plate, the first plate sheet and the second plate sheet are respectively provided with a first corner hole, a second corner hole, a third corner hole and a fourth corner hole which are vertically communicated at corresponding positions of the four corners of the top plate, the bottom plate, the first plate sheet and the second plate sheet, the first corner hole, the second corner hole, the third corner hole and the fourth corner hole are distributed in the anticlockwise direction, the first corner hole is positioned behind the second corner hole, the fourth corner hole is positioned behind the third corner hole, the second corner hole is positioned on the left side of the third corner hole, and the first corner hole is positioned on the left side of the fourth corner hole; the vortex fin on correspond the position of first corner hole on be provided with first orifice district, the vortex fin on correspond the position of second corner hole on be provided with second orifice district, the vortex fin on correspond the position of third corner hole on be provided with third orifice district, the vortex fin on correspond the position of fourth corner hole on be provided with fourth orifice district. The structure is used for realizing the flow of fluid in the heat exchanger so as to realize heat exchange.

The first concave part is arranged from right to left, the right end of the first concave part is positioned at the right side part of the first plate, the left end of the first concave part is positioned between the right side part of the first plate and the left side part of the first plate, and the first concave part separates the third corner hole and the fourth corner hole on the first plate, so that a first U-shaped flow channel is formed between the upper heat exchange unit and the lower heat exchange unit which are adjacent. The heat exchange efficiency of the U-shaped flow channel is high.

The second sunken part is arranged from left to right, the left end of the second sunken part is positioned at the left side part of the second plate, the right end of the second sunken part is positioned between the right side part of the second plate and the left side part of the second plate, the second sunken part separates the first corner hole and the second corner hole on the second plate, so that a second U-shaped flow channel is formed between the first plate and the second plate in the same heat exchange unit, and the directions of the first U-shaped flow channel and the second U-shaped flow channel are opposite. The heat exchange efficiency of the U-shaped flow channels is high, and the same heat exchange fluid can be used in the two U-shaped flow channels, and different heat exchange fluids can also be used in the two U-shaped flow channels, so that the heat exchange efficiency is effectively improved.

The first orifice area and the second orifice area are through holes which are communicated up and down, and the third orifice area and the fourth orifice area are arc-shaped depressions. Is convenient for production and manufacture.

A plurality of convex parts are convexly arranged on the upper end surface of the first plate piece, and the convex parts are arranged at intervals. The convex part plays a role in disturbing flow to the heat exchange fluid, and the heat exchange efficiency is improved.

The upper end surface of the convex part is tightly attached and fixed with the lower end surface of the second plate in the heat exchange unit adjacent to the upper part. The convex parts are used for realizing the stable connection between two heat exchange units which are adjacent up and down, and the use strength of the whole heat exchanger is improved.

The convex part is positioned in the middle of the second concave part. An even distribution of the force of the connection is achieved.

The lateral part of first slab enclose and be equipped with end to end's first locating frame, the inner chamber top-down of first locating frame gradually big, the lateral part of second slab enclose be equipped with end to end with first locating frame matched with second locating frame, the inner chamber top-down of second locating frame gradually big, it is same the heat transfer unit in first locating frame cup joint fix the second locating frame on, the second locating frame cup joint and fix the below adjacent first locating frame in the heat transfer unit on. Through the cup joint of first locating frame and second locating frame, realize the location installation between first slab and the second slab, make the lateral part of two U type runners airtight simultaneously.

Compared with the prior art, the utility model has the advantages that: simple structure need not to do to the vortex fin and breaks the processing, can realize that stable installation is fixed between each slab and vortex fin, has ensured the use intensity of vortex fin, and the welding quality can effectively be ensured through the face laminating to the connection between each part to make the performance of whole heat exchanger can effectual assurance.

Drawings

FIG. 1 is a schematic overall perspective view of the present invention;

FIG. 2 is a schematic perspective view of a first plate according to the present invention;

FIG. 3 is a schematic cross-sectional view of a first plate of the present invention;

FIG. 4 is a schematic perspective view of a fin according to the present invention;

FIG. 5 is a perspective view of a second plate of the present invention;

FIG. 6 is a schematic cross-sectional view of a second plate of the present invention;

FIG. 7 is a schematic sectional view of two heat exchange units of the present invention in cooperation with each other;

fig. 8 is an enlarged schematic view of the structure at C in fig. 7.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

As shown in the figure, the plate-fin heat exchanger comprises a top plate 1, a bottom plate 2 and a heat exchange core body arranged between the top plate 1 and the bottom plate 2, wherein the heat exchange core body is composed of a plurality of heat exchange units A, and the heat exchange units A are stacked from top to bottom; each heat exchange unit A is formed by laminating a first plate 3, a turbulence fin 4 and a second plate 5 from top to bottom; the first plate 3 is provided with an elongated first concave portion 31, the second plate 5 is provided with an elongated second concave portion 51, the second concave portion 51 is provided with an elongated convex portion 52 in a protruding manner, the first concave portion 31 and the convex portion 52 are arranged in a vertically opposite manner, the turbulence fin 4 is provided with a mounting groove 41 at a position corresponding to the first concave portion 31, the first concave portion 31 is embedded into the mounting groove 41, the lower end face of the first concave portion 31 is tightly attached and fixed with the inner end face of the bottom of the mounting groove 41, the upper end face of the convex portion 52 is tightly attached and fixed with the outer end face of the bottom of the mounting groove 41, and the lower end face of the second concave portion 51 is tightly attached and fixed with the upper end face of the first plate 3 in the heat exchange unit A adjacent to the lower portion.

In this embodiment, a first corner hole J1, a second corner hole J2, a third corner hole J3 and a fourth corner hole J4 which are vertically penetrated are respectively arranged at corresponding positions of four corners of the top plate 1, the bottom plate 2, the first plate 3 and the second plate 5, the first corner hole J1, the second corner hole J2, the third corner hole J3 and the fourth corner hole J4 are arranged in the counterclockwise direction, the first corner hole J1 is positioned behind the second corner hole J2, the fourth corner hole J4 is positioned behind the third corner hole J3, the second corner hole J2 is positioned on the left side of the third corner hole J3, and the first corner hole J1 is positioned on the left side of the fourth corner hole J4; a first orifice area Q1 is arranged at a position, corresponding to the first corner hole J1, on the spoiler fin 4, a second orifice area Q2 is arranged at a position, corresponding to the second corner hole J2, on the spoiler fin 4, a third orifice area Q3 is arranged at a position, corresponding to the third corner hole J3, on the spoiler fin 4, and a fourth orifice area Q4 is arranged at a position, corresponding to the fourth corner hole J4, on the spoiler fin 4. The structure is used for realizing the flow of fluid in the heat exchanger so as to realize heat exchange.

In this embodiment, the first concave portion 31 is disposed from right to left, the right end of the first concave portion 31 is located at the right side of the first plate 3, the left end of the first concave portion 31 is located between the right side of the first plate 3 and the left side of the first plate 3, and the first concave portion 31 separates the third corner hole J3 and the fourth corner hole J4 on the first plate 3, so that a first U-shaped flow channel is formed between the heat exchange units a adjacent up and down. The heat exchange efficiency of the U-shaped flow channel is high.

In this embodiment, the second concave portion 51 is disposed from left to right, the left end of the second concave portion 51 is located at the left side of the second plate 5, the right end of the second concave portion 51 is located between the right side of the second plate 5 and the left side of the second plate 5, the second concave portion 51 separates the first corner hole J1 and the second corner hole J2 on the second plate 5, so that a second U-shaped flow channel is formed between the first plate 3 and the second plate 5 in the same heat exchange unit a, and the directions of the first U-shaped flow channel and the second U-shaped flow channel are opposite. The heat exchange efficiency of the U-shaped flow channels is high, and the same heat exchange fluid can be used in the two U-shaped flow channels, and different heat exchange fluids can also be used in the two U-shaped flow channels, so that the heat exchange efficiency is effectively improved.

In this embodiment, the first orifice region Q1 and the second orifice region Q2 are through holes penetrating up and down, and the third orifice region Q3 and the fourth orifice region Q4 are arc-shaped depressions. Is convenient for production and manufacture.

In this embodiment, the upper end surface of the first plate 3 is convexly provided with a plurality of protrusions 32, and the plurality of protrusions 32 are arranged at intervals. The convex part 32 plays a role in disturbing flow of the heat exchange fluid, and the heat exchange efficiency is improved.

In this embodiment, the upper end surface of the convex portion 32 is closely fixed to the lower end surface of the second plate 5 in the heat exchange unit a adjacent above. The convex part 32 realizes stable connection between two heat exchange units A which are adjacent up and down, and the use strength of the whole heat exchanger is improved.

In this embodiment, the convex portion 52 is located at the middle position of the second concave portion 51. An even distribution of the force of the connection is achieved.

In this embodiment, the first positioning frames 33 connected end to end are surrounded on the side portions of the first plates 3, the inner cavity of the first positioning frame 33 is gradually enlarged from top to bottom, the second positioning frames 53 matched with the first positioning frames 33 connected end to end are surrounded on the side portions of the second plates 5, the inner cavity of the second positioning frames 53 is gradually enlarged from top to bottom, the first positioning frames 33 in the same heat exchange unit a are sleeved and fixed on the second positioning frames 53, and the second positioning frames 53 are sleeved and fixed on the first positioning frames 33 in the adjacent heat exchange unit a below. The first positioning frame 33 and the second positioning frame 53 are sleeved to realize positioning and installation between the first plate 3 and the second plate 5, and meanwhile, the side parts of the two U-shaped flow channels are sealed.

Claims

1. A plate-fin heat exchanger comprises a top plate, a bottom plate and a heat exchange core body arranged between the top plate and the bottom plate, wherein the heat exchange core body is composed of a plurality of heat exchange units, and the heat exchange units are stacked from top to bottom; each heat exchange unit is formed by laminating a first plate, a turbulence fin and a second plate from top to bottom; the heat exchange unit is characterized in that a first strip-shaped concave part is arranged on the first plate, a second strip-shaped concave part is arranged on the second plate, a strip-shaped convex part is arranged in the second concave part in a protruding mode, the first concave part and the convex part are arranged in a vertically opposite mode, a mounting groove is formed in the position, corresponding to the first concave part, of each turbulence fin, the first concave part is embedded into the mounting groove, the lower end face of the first concave part and the inner end face of the bottom of the mounting groove are fixedly attached to each other, the upper end face of the convex part and the outer end face of the bottom of the mounting groove are fixedly attached to each other, and the lower end face of the second concave part and the upper end face of the first plate in the heat exchange unit adjacent to the lower side are fixedly attached to each other.

2. The plate-fin heat exchanger as claimed in claim 1, wherein the top plate, the bottom plate, the first plate and the second plate are respectively provided with a first corner hole, a second corner hole, a third corner hole and a fourth corner hole which are vertically communicated at corresponding positions, the first corner hole, the second corner hole, the third corner hole and the fourth corner hole are arranged in a counterclockwise direction, the first corner hole is located behind the second corner hole, the fourth corner hole is located behind the third corner hole, the second corner hole is located at the left side of the third corner hole, and the first corner hole is located at the left side of the fourth corner hole; the vortex fin on correspond the position of first corner hole on be provided with first orifice district, the vortex fin on correspond the position of second corner hole on be provided with second orifice district, the vortex fin on correspond the position of third corner hole on be provided with third orifice district, the vortex fin on correspond the position of fourth corner hole on be provided with fourth orifice district.

3. The plate fin heat exchanger of claim 2, wherein the first concave portion is disposed from right to left, the right end of the first concave portion is located at the right side of the first plate, the left end of the first concave portion is located between the right side of the first plate and the left side of the first plate, and the first concave portion separates the third corner hole and the fourth corner hole of the first plate, so that a first U-shaped flow channel is formed between the upper and lower adjacent heat exchange units.

4. A plate fin heat exchanger as recited in claim 3 wherein said second depression is disposed from left to right, the left end of said second depression being located on the left side of said second plate, the right end of said second depression being located between the right side of said second plate and the left side of said second plate, said second depression separating said first angled opening and said second angled opening of said second plate, such that a second U-shaped flow channel is formed between said first plate and said second plate in the same heat exchange unit, said first U-shaped flow channel and said second U-shaped flow channel being in opposite directions.

5. The plate fin heat exchanger of claim 2, wherein the first porthole area and the second porthole area are through holes which are vertically through, and the third porthole area and the fourth porthole area are arc-shaped depressions.

6. The plate fin heat exchanger of claim 1, wherein the first plate has a plurality of protrusions protruding from the upper end surface thereof, and the plurality of protrusions are spaced apart from each other.

7. The plate fin heat exchanger of claim 6, wherein the upper end surface of the convex portion is closely fixed with the lower end surface of the second plate in the above-adjacent heat exchange unit.

8. The plate fin heat exchanger of claim 1, wherein the raised portion is located at a middle position of the second recessed portion.

9. The plate-fin heat exchanger as claimed in claim 1, wherein the first plate has a first positioning frame disposed around its side portion, the first positioning frame has an inner cavity gradually enlarged from top to bottom, the second plate has a second positioning frame disposed around its side portion, the second positioning frame is fitted with the first positioning frame, the inner cavity of the second positioning frame is gradually enlarged from top to bottom, the first positioning frame in the same heat exchange unit is fitted and fixed to the second positioning frame, and the second positioning frame is fitted and fixed to the first positioning frame in the adjacent heat exchange unit below.