CN117663856A

CN117663856A - Countercurrent heat exchanger

Info

Publication number: CN117663856A
Application number: CN202311831036.XA
Authority: CN
Inventors: 闫拥军; 黄春朋; 戚志权; 祝春芳
Original assignee: Guangdong Tianruide New Energy Technology Co ltd
Current assignee: Guangdong Tianruide New Energy Technology Co ltd
Priority date: 2023-12-27
Filing date: 2023-12-27
Publication date: 2024-03-08

Abstract

The invention discloses a countercurrent heat exchanger, which comprises a core body, wherein the core body is provided with a plurality of interlayer flow passages which are sequentially arranged from bottom to top, two adjacent interlayer flow passages are separated by a heat transfer partition plate, fins are arranged between the two adjacent heat transfer partition plates, the interlayer flow passages are separated into a plurality of passages by the fins in the interlayer flow passages, each fin comprises a first part and a second part which are connected, the two ends of the first part are respectively connected with the second part, and the first part and the second part form an obtuse angle; in any two adjacent interlayer flow channels, one interlayer flow channel is a cold fluid flow channel, the other interlayer flow channel is a hot fluid flow channel, and the flowing direction of cold fluid in the cold fluid flow channel when flowing through the first partial area is opposite to the flowing direction of hot fluid in the hot fluid flow channel when flowing through the first partial area; the whole core body is in a hexagonal prism shape, one end of the core body is provided with a hot fluid inlet and a cold fluid outlet, and the other end of the core body is provided with a cold fluid inlet and a hot fluid outlet. The countercurrent heat exchanger has small volume and low cost.

Description

Countercurrent heat exchanger

Technical Field

The invention relates to the technical field of heat exchangers, in particular to a countercurrent heat exchanger.

Background

In the production process of the metal ion battery, the temperature of exhaust gas discharged by a coating machine oven is about 120 ℃, and energy waste can be caused by direct discharge, so that waste heat recovery is required for the high-temperature exhaust gas.

The waste heat recovery equipment commonly used at present comprises: plate-fin heat exchangers, heat pipe heat exchangers, and the like. However, no matter what kind of heat recovery equipment is, cold and hot fluid can only form cross flow generally, and it is difficult to accomplish backward flow, and heat exchange efficiency is bad enough, so that the heat exchanger needs very big heat exchange area, and this can certainly lead to the whole volume of heat exchanger to be partial.

Disclosure of Invention

The invention mainly aims to provide a countercurrent heat exchanger with a novel structure, and aims to solve the problem that the existing heat exchanger is large in size.

In order to solve the technical problems, the invention adopts the following technical scheme: the countercurrent heat exchanger comprises a core body, wherein the core body is provided with a plurality of interlayer flow passages which are sequentially arranged from bottom to top, two adjacent interlayer flow passages are separated by a heat transfer partition plate, fins are arranged between the two adjacent heat transfer partition plates, the fins in the interlayer flow passages divide the interlayer flow passages into a plurality of passages, each fin comprises a first part and a second part which are connected, two ends of each first part are respectively connected with the second part, and the first part and the second part form an obtuse angle; in any two adjacent interlayer flow channels, one interlayer flow channel is a cold fluid flow channel, the other interlayer flow channel is a hot fluid flow channel, and the flowing direction of cold fluid in the cold fluid flow channel when flowing through the first partial area is opposite to the flowing direction of hot fluid in the hot fluid flow channel when flowing through the first partial area; the core body is integrally in a hexagonal prism shape, one end of the core body is provided with a hot fluid inlet and a cold fluid outlet, the other end of the core body is provided with a cold fluid inlet and a hot fluid outlet, the cold fluid inlet and the cold fluid outlet are respectively communicated with the cold fluid runner, and the hot fluid inlet and the hot fluid outlet are respectively communicated with the hot fluid runner.

The invention has the beneficial effects that: the countercurrent heat exchanger has novel and simple structure, and the hot fluid and the cold fluid in the rectangular body flowing through the core body can completely countercurrent, so that the heat exchange efficiency is improved, the heat energy can be utilized to the maximum extent, the heat exchange area is reduced, the overall size of the heat exchanger is reduced, and the manufacturing cost of the heat exchanger is saved. The countercurrent heat exchanger also has the advantages of good structural stability and good sealing performance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a countercurrent heat exchanger according to a first embodiment of the present invention;

fig. 2 is a schematic structural view of a cold fluid flow channel in a counter-flow heat exchanger according to a first embodiment of the invention;

fig. 3 is a schematic structural view of a hot fluid flow channel in a counter-flow heat exchanger according to a first embodiment of the invention;

fig. 4 is a schematic view of a partial area of a countercurrent heat exchanger according to a first embodiment of the present invention.

Reference numerals illustrate:

1. a core; 11. an interlayer flow channel; 12. a heat transfer separator; 13. a rectangular body; 15. a first portion; 151. a first sheet body; 152. a second sheet body; 16. a second portion; 171. a cold fluid inlet; 172. a cold fluid outlet; 173. a hot fluid inlet; 174. a hot fluid outlet;

2. a side plate;

3. a seal; 31. an air chamber;

4. and an interface flange.

Detailed Description

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, in the embodiment of the present invention, directional indications such as up, down, left, right, front, and rear … … are referred to, and the directional indication is merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture such as that shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

In addition, if the meaning of "and/or" is presented throughout this document to include three parallel schemes, taking "and/or" as an example, including a scheme, or a scheme that is satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

Example 1

Referring to fig. 1 to 4, a first embodiment of the present invention is as follows: a countercurrent heat exchanger can be used for gas-gas heat exchange, gas-liquid heat exchange, liquid-liquid heat exchange and other occasions.

The countercurrent heat exchanger comprises a core body 1, wherein the core body 1 is provided with a plurality of interlayer flow passages 11 which are sequentially arranged from bottom to top, two adjacent interlayer flow passages 11 are separated by a heat transfer partition plate 12, fins are arranged between the two adjacent heat transfer partition plates 12, the fins in the interlayer flow passages 11 divide the interlayer flow passages 11 into a plurality of channels, each fin comprises a first part 15 and a second part 16 which are connected, two ends of each first part 15 are respectively connected with the second part 16, the first parts 15 and the second parts 16 form obtuse angles, and optionally, each first part 15 is respectively brazed with the second parts 16 and the heat transfer partition plates 12; in any two adjacent interlayer flow channels 11, one interlayer flow channel 11 is a cold fluid flow channel, the other interlayer flow channel 11 is a hot fluid flow channel, and the flowing direction of cold fluid in the cold fluid flow channel when flowing through the first part 15 area is opposite to the flowing direction of hot fluid in the hot fluid flow channel when flowing through the first part 15 area, so that countercurrent is formed; the whole hexagonal prism-shaped core body 1, the one end of core body 1 is equipped with hot fluid inlet 173 and cold fluid outlet 172, the other end of core body 1 is equipped with cold fluid inlet 171 and hot fluid outlet 174, cold fluid inlet 171 and cold fluid outlet 172 communicate respectively the cold fluid runner, hot fluid inlet 173 and hot fluid outlet 174 communicate respectively the hot fluid runner.

In order to improve the overall structural strength of the counter-flow heat exchanger and make the appearance of the counter-flow heat exchanger smoother, the opposite sides of the core 1 are respectively provided with side plates 2, and optionally, the side plates 2 are respectively in sealing connection with a heat transfer partition 12 positioned on the top layer of the core 1 and a heat transfer partition 12 positioned on the bottom layer, and in some embodiments, the side plates 2 are in sealing connection with each heat transfer partition 12, and the sealing connection manner between the side plates 2 and the heat transfer partition 12 includes, but is not limited to, brazing.

In this embodiment, the end of the core 1 is in a triangular prism shape, and in other embodiments, the end of the core 1 may also be in an isosceles trapezoid prism shape, which may be specifically selected according to actual needs.

The first portion 15 and the second portion 16 connected thereto form an angle of 50-70 deg.. Preferably, said first portion 15 and said second portion 16 associated therewith form an angle of 60 °. In this embodiment, the projection area of the end of the core 1 is isosceles triangle when the core 1 is viewed from above.

In order to ensure the sealing effect of the interlayer fluid to prevent the side leakage of the interlayer flow channel 11, preferably, the edge of the interlayer flow channel 11 is provided with a seal 3. Specifically, for the hot fluid flow channel, the other areas except the position of the hot fluid inlet 173 and the position of the hot fluid outlet 174 at the edge of the hot fluid flow channel are blocked by the seal 3; for the cold fluid flow channel, the edges of the cold fluid flow channel are blocked by the seal 3 except at the position of the cold fluid inlet 171 and the position of the cold fluid outlet 172.

To improve the outward dissipation of heat, the seal 3 may optionally have an air chamber 31. In this embodiment, the seal 3 is a square tube.

In order to ensure structural stability of the fin, the fin is corrugated, in this embodiment, the fin includes a plurality of first sheet bodies 151 disposed side by side and a plurality of second sheet bodies 152 for connecting two adjacent first sheet bodies 151, where two adjacent second sheet bodies 152 are disposed away from each other, that is, the connection between the first sheet body 151 and two second sheet bodies 152 connected therewith is located at the top end and the bottom end of the first sheet body 151. Alternatively, the first sheet 151 is perpendicular to the heat transfer partition 12, and the second sheet 152 is parallel to and in surface contact with the heat transfer partition 12. In other embodiments, the fins may also be wavy or otherwise shaped.

The core 1 is provided with an interface flange 4, and the interface flange 4 is respectively and correspondingly arranged at the hot fluid inlet 173, the cold fluid outlet 172, the cold fluid inlet 171 and the hot fluid outlet 174.

The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.

Claims

1. A counter flow heat exchanger, characterized by: the heat transfer device comprises a core body, wherein the core body is provided with a plurality of interlayer flow passages which are sequentially arranged from bottom to top, two adjacent interlayer flow passages are separated by a heat transfer partition plate, a fin is arranged between the two adjacent heat transfer partition plates, the fin in the interlayer flow passages divides the interlayer flow passages into a plurality of passages, the fin comprises a first part and a second part which are connected, two ends of the first part are respectively connected with the second part, and the first part and the second part form an obtuse angle; in any two adjacent interlayer flow channels, one interlayer flow channel is a cold fluid flow channel, the other interlayer flow channel is a hot fluid flow channel, and the flowing direction of cold fluid in the cold fluid flow channel when flowing through the first partial area is opposite to the flowing direction of hot fluid in the hot fluid flow channel when flowing through the first partial area; the core body is integrally in a hexagonal prism shape, one end of the core body is provided with a hot fluid inlet and a cold fluid outlet, the other end of the core body is provided with a cold fluid inlet and a hot fluid outlet, the cold fluid inlet and the cold fluid outlet are respectively communicated with the cold fluid runner, and the hot fluid inlet and the hot fluid outlet are respectively communicated with the hot fluid runner.

2. The reverse flow heat exchanger of claim 1 wherein: the opposite sides of the core body are respectively provided with a side plate.

3. The reverse flow heat exchanger of claim 2 wherein: the side plates are connected with the heat transfer partition plates in a sealing way.

4. The reverse flow heat exchanger of claim 1 wherein: the end of the core body is in a triangular column shape or an isosceles trapezoid column shape.

5. The reverse flow heat exchanger of claim 1 wherein: the first portion and the second portion connected thereto form an angle of 50-70 deg..

6. The reverse flow heat exchanger of claim 5 wherein: the first portion and the second portion connected thereto form an included angle of 60 °.

7. The reverse flow heat exchanger of claim 1 wherein: and a seal is arranged at the edge of the interlayer flow channel.

8. The reverse flow heat exchanger of claim 7 wherein: the seal has an air cavity.

9. The reverse flow heat exchanger of claim 1 wherein: the fins are corrugated.

10. The reverse flow heat exchanger of claim 1 wherein: the core body is provided with an interface flange, and the interface flange is respectively and correspondingly arranged at the hot fluid inlet, the cold fluid outlet, the cold fluid inlet and the hot fluid outlet.