CN110986651B

CN110986651B - Finned tube heat exchanger with heat exchange cavity in fin

Info

Publication number: CN110986651B
Application number: CN201911262376.9A
Authority: CN
Inventors: 李健; 秦力峰
Original assignee: Changzhou University
Current assignee: Changzhou University
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2021-11-02
Anticipated expiration: 2039-12-10
Also published as: CN110986651A

Abstract

The invention discloses a finned tube heat exchanger with a heat exchange cavity in a fin, which comprises at least one fin, wherein the fin comprises a fin substrate, at least one connecting tube is fixedly connected to the fin substrate, the inner side of the fin substrate is provided with a cavity, one end of the cavity is provided with a water inlet tube, the opposite end of the cavity and the water inlet tube is provided with a water outlet tube, the inner wall of the cavity is provided with a plurality of first heat-conducting flow disturbing blocks and second heat-conducting flow disturbing blocks, and fan blades are arranged in the cavity; according to the technical scheme, the liquid cooling heat dissipation mode can be adopted for heat dissipation, and the first heat conduction flow disturbing block, the fan blades and the second heat conduction flow disturbing block in the fin substrate can fully disturb the heat dissipation liquid, so that the heat dissipation liquid can absorb and take away the maximum heat as far as possible; meanwhile, the radiating fins and the protruding parts on the fin base plate can increase the radiating area of the fin base plate and assist the heat exchanger in passive heat radiation.

Description

Finned tube heat exchanger with heat exchange cavity in fin

Technical Field

The invention relates to the technical field of heat exchangers, in particular to a finned tube heat exchanger with heat exchange cavities in fins.

Background

The finned tube heat exchanger is widely applied, flat fins are mostly adopted in common finned tube heat exchangers, the heat resistance ratio of the air side of the finned tube heat exchanger adopting the flat fins is the largest, and the heat exchange coefficient of the air side is lower.

The conventional finned tube heat exchanger is low in heat dissipation efficiency due to the fact that most of the finned tube heat exchanger adopts passive air cooling for heat dissipation, only a small part of finned tube heat exchanger adopts water cooling for heat dissipation, but the problem that the specific heat capacity of heat dissipation liquid cannot be fully utilized to achieve high heat dissipation efficiency due to the fact that the design is unreasonable is solved, and therefore the finned tube heat exchanger with the heat exchange cavities in the fins is provided.

Disclosure of Invention

The invention aims to provide a finned tube heat exchanger with heat exchange cavities in fins, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the finned tube heat exchanger comprises at least one fin, wherein the fin comprises a fin base plate, at least one connecting tube is fixedly connected to the fin base plate, a cavity is formed in the inner side of the fin base plate, a water inlet tube is installed at one end of the cavity, a water outlet tube is installed at the opposite end of the water inlet tube on the cavity, a plurality of first heat conduction turbulence blocks and second heat conduction turbulence blocks are arranged on the inner wall of the cavity, and fan blades are installed in the cavity.

Preferably, a plurality of heat dissipation fins are mounted on the fin substrate.

Preferably, the fin base plate has a plurality of projections thereon.

Preferably, an included angle between the first heat conduction flow disturbing block and the horizontal inner wall of the cavity is 15-30 degrees.

Preferably, the included angle between the second heat conduction flow disturbing block and the horizontal inner wall of the cavity is 150-180 degrees.

Preferably, the fan blades are positioned on a straight line segment which can be connected with the water outlet pipe and the water inlet pipe.

Compared with the prior art, the invention has the beneficial effects that:

according to the technical scheme, a liquid-cooled heat dissipation mode can be adopted for heat dissipation, and the first heat-conducting flow disturbing block, the fan blades and the second heat-conducting flow disturbing block in the fin substrate can fully disturb heat dissipation liquid, so that the heat dissipation liquid can absorb and take away the maximum heat as far as possible; meanwhile, the radiating area of the fin substrate can be increased through the radiating fins and the protruding parts which are arranged on the fin substrate, and the heat exchanger is assisted to perform passive heat radiation.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

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

FIG. 2 is a top cross-sectional view of the fin body of the present invention;

FIG. 3 is a front cross-sectional view of the fin body of the present invention;

FIG. 4 is a schematic structural diagram according to a second embodiment of the present invention;

FIG. 5 is a top cross-sectional view of the fin body in a second embodiment of the present invention;

in the figure: 1. a fin substrate; 2. heat dissipation fins; 3. a connecting pipe; 4. a water outlet pipe; 5. a second heat-conducting turbulence block; 6. a first heat-conducting turbulence block; 7. a fan blade; 8. a water inlet pipe; 9. a raised portion.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example one

Referring to fig. 1-3, the present invention provides a technical solution: a finned tube heat exchanger with a heat exchange cavity in a fin comprises three fins, wherein each fin comprises a fin base plate 1, three connecting tubes 3 are fixedly connected to the fin base plate 1, a cavity is formed in the inner side of the fin base plate 1, a water inlet tube 8 is installed at one end of the cavity, a water outlet tube 4 is installed at the opposite end of the cavity and the water inlet tube 8, a plurality of first heat conduction flow disturbing blocks 6 and second heat conduction flow disturbing blocks 5 are arranged on the inner wall of the cavity, an included angle between each first heat conduction flow disturbing block 6 and the horizontal inner wall of the cavity is 30 degrees, an included angle between each second heat conduction flow disturbing block 5 and the horizontal inner wall of the cavity is 150 degrees, and fan blades 7 are installed in the cavity, the liquid cooling heat dissipation mode can be adopted for heat dissipation, and the first heat conduction flow disturbing block 6, the fan blades 7 and the second heat conduction flow disturbing block 5 in the fin substrate 1 can fully disturb the heat dissipation liquid, so that the heat dissipation liquid can absorb and take away the most heat as far as possible.

In this embodiment, preferably, four heat dissipation fins 2 are installed on the fin substrate 1, and the four heat dissipation fins 2 are uniformly arranged.

In this embodiment, it is preferable that the fan blade 7 is located on a straight line segment connecting the water outlet pipe 4 and the water inlet pipe 8.

Example two

Referring to fig. 4-5, the present invention provides a technical solution: a finned tube heat exchanger with a heat exchange cavity in a fin comprises three fins, wherein each fin comprises a fin base plate 1, three connecting tubes 3 are fixedly connected to the fin base plate 1, a cavity is formed in the inner side of the fin base plate 1, a water inlet tube 8 is installed at one end of the cavity, a water outlet tube 4 is installed at the opposite end of the cavity and the water inlet tube 8, a plurality of first heat conduction flow disturbing blocks 6 and second heat conduction flow disturbing blocks 5 are arranged on the inner wall of the cavity, an included angle between each first heat conduction flow disturbing block 6 and the horizontal inner wall of the cavity is 30 degrees, an included angle between each second heat conduction flow disturbing block 5 and the horizontal inner wall of the cavity is 150 degrees, and fan blades 7 are installed in the cavity, the liquid cooling heat dissipation mode can be adopted for heat dissipation, and the first heat conduction flow disturbing block 6, the fan blades 7 and the second heat conduction flow disturbing block 5 in the fin substrate 1 can fully disturb the heat dissipation liquid, so that the heat dissipation liquid can absorb and take away the most heat as far as possible.

In this embodiment, preferably, the fin substrate 1 has two protruding portions 9, and the two protruding portions 9 are uniformly arranged.

The working principle and the using process of the invention are as follows: when the device is used, a guide pipe is inserted into a connecting pipe 3, a water outlet pipe 4 is connected with a high-pressure pump through the guide pipe, a water inlet pipe 8 is connected with a circulating water tank through the guide pipe, the high-pressure pump is placed in the water tank, the high-pressure pump is started, the heat dissipation liquid in the water tank can be conveyed into a fin substrate 1 through the high-pressure pump, when the heat dissipation liquid passes through the fin substrate 1, the heat dissipation liquid flows and drives a fan blade 7 to rotate, the first heat conduction turbulence block 6, the fan blade 7 and the second heat conduction turbulence block 5 can fully disturb the heat dissipation liquid, the heat dissipation liquid is fully contacted with the inner wall of a cavity, the heat dissipation liquid can absorb and take away the most heat as far as possible, the first heat conduction turbulence block 6 and the second heat conduction turbulence block 5 can absorb the heat, the contact area of the heat dissipation liquid can be increased, the heat dissipation efficiency is increased, and the heat dissipation area of a heat dissipation fin 2 and a bulge part 9 on the fin substrate 1 can be increased, the auxiliary heat exchanger performs passive heat dissipation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The finned tube heat exchanger with the heat exchange cavity in the fin is characterized in that: the heat-conducting fin comprises at least one fin, wherein the fin comprises a fin substrate (1), at least one connecting pipe (3) is fixedly connected to the fin substrate (1), a cavity is formed in the inner side of the fin substrate (1), a water inlet pipe (8) is installed at one end of the cavity, a water outlet pipe (4) is installed at the opposite end of the cavity and the water inlet pipe (8), a plurality of first heat-conducting flow disturbing blocks (6) and a plurality of second heat-conducting flow disturbing blocks (5) are arranged on the inner wall of the cavity, fan blades (7) are installed in the cavity, and a plurality of fan blades (7) are arranged;

an included angle between the first heat conduction flow disturbing block (6) and the horizontal inner wall of the cavity is 15-30 degrees;

an included angle between the second heat conduction flow disturbing block (5) and the horizontal inner wall of the cavity is 150-180 degrees;

the fan blades (7) are positioned on a straight line section which can be connected with the water outlet pipe (4) and the water inlet pipe (8).

2. The finned tube heat exchanger with heat exchange cavities in fins according to claim 1, wherein: a plurality of radiating fins (2) are arranged on the fin base plate (1).

3. The finned tube heat exchanger with heat exchange cavities in fins according to claim 1, wherein: the fin base plate (1) is provided with a plurality of protruding parts (9).