CN218937115U

CN218937115U - Square heat pipe

Info

Publication number: CN218937115U
Application number: CN202223471876.3U
Authority: CN
Inventors: 吴先峰; 唐黎; 胡循亮; 何阳
Original assignee: Wuxi Zhongshi Kuluojie Technology Co ltd
Current assignee: Wuxi Zhongshi Kuluojie Technology Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-04-28
Anticipated expiration: 2032-12-26

Abstract

The utility model discloses a square heat pipe, and belongs to the technical field of manufacturing of heat pipes. The heat pipe comprises a hollow pipe body, wherein a capillary structure is arranged in the hollow pipe body, the hollow pipe body is sequentially provided with an evaporation section, a heat insulation section and a condensation section along the axial direction, and the heat pipe is bent at the heat insulation section; the sections of the hollow pipe bodies at the evaporating section and the condensing section are square with two chamfers R below; the section of the hollow pipe body at the heat insulation section is in a waist round shape; the thickness T of the evaporation section and the condensation section is equal to the thickness T of the heat insulation section, and the width W1 of the evaporation section and the condensation section is smaller than the width W of the heat insulation section; the heat pipe is a flat heat pipe, and the evaporation section, the heat insulation section and the condensation section of the heat pipe are integrally formed after being pressed by a forming die. According to the square heat pipe provided by the utility model, the chamfer angles are arranged on two sides of the square heat pipe, so that the square heat pipe has good fit degree with a heating copper block (a heat source), and the heat conducting performance of the heat pipe is greatly improved.

Description

Square heat pipe

Technical Field

The utility model belongs to the technical field of manufacturing of heat pipes, and particularly relates to a square heat pipe.

Background

At present, electronic products are more and more integrated, product power is also improved, heat dissipation becomes an indispensable part of the electronic products, and the heat pipe has an irreplaceable effect in the aspect of heat dissipation and heat transfer due to good superconductivity. In order to fully utilize the superconducting property of the heat pipe, the larger the contact area between the heat pipe and the heat generating source and the heat radiating fin is, the better the contact area is. In the prior art, most of heat pipes are round or flat elliptic, and the contact area between the heat pipes and a heat source is small, so that heat collection can be influenced, and the heat dissipation effect of the heat pipes is poor.

There are also improvements in the prior art, such as the utility model disclosed in application number CN201821831358.9, which discloses a heat pipe, comprising a pipe shell, wherein the pipe shell comprises at least one heat conducting section, the cross section of at least one heat conducting section is polygonal, and the cross sections of the rest heat conducting sections are circular. Preferably, the polygon is square.

Although the square heat conduction section solves the problem of small contact area with a heat source to a certain extent, in the actual use process, for the heat source with a certain round angle at the bottom of a groove shape, good lamination cannot be achieved, and the heat dissipation effect of the heat pipe is affected.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a square heat pipe, wherein chamfer angles are arranged on two sides of the square heat pipe, so that the square heat pipe has good bonding degree with a heating copper block, and the heat conducting property of the heat pipe is greatly improved.

The technical scheme adopted for solving the technical problems is as follows: the square heat pipe comprises a hollow pipe body, wherein a capillary structure is arranged in the hollow pipe body, the hollow pipe body is sequentially provided with an evaporation section, a heat insulation section and a condensation section along the axial direction, and the heat pipe is bent at the heat insulation section; the sections of the hollow pipe bodies at the evaporation section and the condensation section are square with two chamfers R below; the section of the hollow pipe body at the heat insulation section is in a waist round shape; the thickness T of the evaporation section and the condensation section is equal to the thickness T of the heat insulation section, and the width W1 of the evaporation section and the condensation section is smaller than the width W of the heat insulation section; the heat pipe is a flat heat pipe, and the evaporation section, the heat insulation section and the condensation section of the heat pipe are integrally formed after being pressed by a forming die.

Further, both said chamfers R are smaller than 0.5T.

Further, the width W1 is 80% -90% of the width W.

Further, the bending angle ranges from 0 to 180 degrees.

Further, the angle of the bending is 90 degrees.

The beneficial effects of the utility model are as follows: compared with the traditional waisted heat pipe, the square heat pipe provided by the utility model has the advantages that the evaporation section and the condensation section are designed into the square shape with the two chamfers R at the lower part, so that the heat pipe body is embedded into the groove of the external heating copper block (heat source), the bottom in the groove is arc-shaped, the square heat pipe body and the heat source can be well attached, and compared with the traditional waisted heat pipe, the contact area between the square heat pipe and the heat source can be increased by 20% under the same pipe diameter condition, the heat absorption rate is improved, and the heat dissipation performance of the heat pipe is greatly improved; in addition, the heat insulation section adopts a traditional waist round structure, when round pipes with the same pipe diameter are pressed into waist round shapes, the width of the obtained flat pipe is larger than the width of square pipes which are pressed into square pipes (under the premise of equal heights), so that certain pressure difference is formed between the middle heat insulation section and evaporation sections and condensation sections at two ends, medium flowing in the pipes is promoted, and heat conduction efficiency is further improved. The square heat pipe is formed at one time through pressing, and is convenient to manufacture and low in production cost.

Drawings

FIG. 1 is a schematic diagram of a square heat pipe according to the present utility model.

Fig. 2 is a cross-sectional view of section A-A' of fig. 1.

Fig. 3 is a cross-sectional view of section B-B' of fig. 1.

FIG. 4 is a graph showing the relationship between the heat pipe and the heat source according to the present utility model.

Wherein, 1-evaporation section; 2-an insulation section; 3-condensing section; 4-chamfering R; 5-heating the copper block.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Examples

As shown in fig. 1 to 4, a square heat pipe comprises a hollow pipe body, wherein a capillary structure is arranged in the hollow pipe body, the hollow pipe body is sequentially provided with an evaporation section 1, a heat insulation section 2 and a condensation section 3 along the axial direction, and the heat pipe is bent at the heat insulation section 2; the sections of the hollow pipe bodies at the evaporation section 1 and the condensation section 3 are square with two chamfers R4 at the lower part; the section of the hollow pipe body at the heat insulation section 2 is in a waist round shape; the thickness T of the evaporation section 1 and the condensation section 3 is equal to the thickness T of the heat insulation section 2, and the width W1 of the evaporation section 1 and the condensation section 3 is smaller than the width W of the heat insulation section 2; the heat pipe is a flat heat pipe, and the evaporation section 1, the heat insulation section 2 and the condensation section 3 of the heat pipe are integrally formed after being pressed by a forming die. When the heat pipe is used, the heat pipe body is embedded into the groove of the external heating copper block 5 (heat source), the bottom in the groove is arc-shaped, the square heat pipe body and the heating copper block 5 (heat source) can be well attached, compared with a traditional waist round heat pipe, the square heat pipe and the heat source can increase the contact area by 20% under the same pipe diameter condition, the heat absorption rate is improved, and the heat dissipation performance of the heat pipe is greatly improved.

The two chamfers R4 are smaller than 0.5T, and can be designed and adjusted according to the specific heat source shape.

The width W1 is 80% -90% of the width W. Therefore, a certain pressure difference is formed between the middle heat insulation section 2 and the evaporation section 1 and the condensation section 3 at the two ends, the medium is promoted to flow in the pipe, and the heat conduction efficiency is further improved.

The bending angle ranges from 0 to 180 degrees. In one embodiment, the angle of the bend is 90 degrees, resulting in a flat square heat pipe with a right angle bend.

The above embodiments are only for illustrating the present utility model, not for limiting the present utility model, and various changes and modifications may be made by one of ordinary skill in the relevant art without departing from the spirit and scope of the present utility model, and therefore, all equivalent technical solutions are also within the scope of the present utility model, and the scope of the present utility model is defined by the claims.

Claims

1. The square heat pipe comprises a hollow pipe body, wherein a capillary structure is arranged in the hollow pipe body, the hollow pipe body is sequentially provided with an evaporation section, a heat insulation section and a condensation section along the axial direction, and the heat pipe is bent at the heat insulation section; the method is characterized in that: the sections of the hollow pipe bodies at the evaporation section and the condensation section are square with two chamfers R below; the section of the hollow pipe body at the heat insulation section is in a waist round shape; the thickness T of the evaporation section and the condensation section is equal to the thickness T of the heat insulation section, and the width W1 of the evaporation section and the condensation section is smaller than the width W of the heat insulation section; the heat pipe is a flat heat pipe, and the evaporation section, the heat insulation section and the condensation section of the heat pipe are integrally formed after being pressed by a forming die.

2. A square heat pipe as defined in claim 1, wherein: the two chamfers R are smaller than 0.5T.

3. A square heat pipe as defined in claim 1, wherein: the width W1 is 80% -90% of the width W.

4. A square heat pipe as defined in claim 1, wherein: the bending angle ranges from 0 to 180 degrees.

5. A square heat pipe as defined in claim 4, wherein: the angle of the bending is 90 degrees.