Novel heat pipe

Abstract

The utility model belongs to the technical field of heat dissipation, and particularly relates to a novel heat pipe which comprises a pipe body, cooling fluid is stored in the pipe body, the inner side of the pipe body is fixedly connected with a first capillary structure, and the inner side of the first capillary structure is fixedly connected with a second capillary structure. The second capillary structure comprises an evaporation section capillary structure, a first condensation section capillary structure and a second condensation section capillary structure which are fixedly connected to the inner wall of the first capillary structure, the particle sizes of the evaporation section capillary structure, the first condensation section capillary structure and the second condensation section capillary structure are sequentially reduced, the particle size of the evaporation section capillary structure is 150-300 meshes, and the particle size of the second condensation section capillary structure is 150-300 meshes. The particle size of the capillary structure of the first condensation section is 80-120 meshes, the particle size of the capillary structure of the second condensation section is 30-80 meshes, the positions of the capillary structures of the first condensation section and the second condensation section can be changed according to use conditions, and it is ensured that the particle size of the copper powder of the capillary structure of the evaporation section is 150-300 meshes. According to the utility model, the heat pipe can be effectively used under the inverse gravity condition and the vibration force environment, and the application environment of the heat pipe is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the heat dissipation technical field, specifically related to a novel heat pipe. BACKGROUND

[0002] Electronic devices or machine equipment will generate high temperature when running, so manufacturers usually install heat pipes for heat dissipation. Heat pipes use the evaporation and condensation of internal cooling fluid to achieve rapid temperature equalization.

[0003] The heat pipe is disclosed in Chinese patent CN221825963U. The total thickness of the composite capillary structure in the evaporation section varies, allowing the cooling fluid to continuously return to the evaporation section and delay dry burning. The cooling fluid can flow more quickly outside the evaporation section, and the thermal resistance of the evaporation section can be reduced, further improving the heat dissipation efficiency of the heat pipe.

[0004] Heat pipes can be applied to many devices, such as automobile engine compartments, mobile electronic devices, aerospace equipment, computers, communication equipment, servers, drones, mobile phones, graphics cards, and electronic fast-moving consumer goods. Heat pipes need to cope with many environmental conditions, such as inverse gravity and vibration force environments. Traditional heat pipes cannot be used in inverse gravity and vibration force environments at the same time, greatly limiting the application environment of heat pipes. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a novel heat pipe that can be effectively used in inverse gravity and vibration force environments, improving the application environment of heat pipes.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A novel heat pipe includes a pipe body, the pipe body stores cooling fluid inside, the inner side of the pipe body is fixedly connected with a first groove capillary structure, the inner side of the first capillary structure is fixedly connected with a second capillary structure;

[0008] The second capillary structure includes an evaporation section capillary structure, a first condensation section capillary structure, and a second condensation section capillary structure fixedly connected to the inner wall of the first capillary structure, the particle size of the evaporation section capillary structure, the first condensation section capillary structure, and the second condensation section capillary structure decreases in turn;

[0009] The particle size of the evaporation section capillary structure is 150-300 meshes, the part of the pipe body outside the evaporation section capillary structure is an evaporation section unit, the particle size of the first condensation section capillary structure is 80-120 meshes, the part of the pipe body outside the first condensation section capillary structure is a first condensation section unit, the particle size of the second condensation section capillary structure is 30-80 meshes, and the part of the pipe body outside the second condensation section capillary structure is a second condensation section unit.

[0010] Further, the material of the second capillary structure is copper powder.

[0011] Further, a plurality of grooves are arranged on the inner wall of the first capillary structure.

[0012] Further, the axial position of the pipe body is fixedly connected with a third capillary structure, the part of the third capillary structure inside the evaporation section unit is an evaporation section capillary column structure, and the evaporation section capillary column structure is fixedly connected with the inner side of the evaporation section capillary structure through an evaporation section capillary support structure.

[0013] The part of the third capillary structure inside the first condensation section unit is a first condensation section capillary column structure, the first condensation section capillary column structure is fixedly connected with the inner side of the first condensation section capillary structure through a first condensation section capillary support structure, the part of the third capillary structure inside the second condensation section unit is a second condensation section capillary column structure, and the second condensation section capillary column structure is fixedly connected with the inner side of the second condensation section capillary structure through a second condensation section capillary support structure.

[0014] Further, the material and porosity of the evaporation section capillary column structure and the evaporation section capillary support structure are the same as those of the evaporation section capillary structure, the material and porosity of the first condensation section capillary column structure and the first condensation section capillary support structure are the same as those of the first condensation section capillary structure, and the material and porosity of the second condensation section capillary column structure and the second condensation section capillary support structure are the same as those of the second condensation section capillary structure.

[0015] Further, the inner wall of the pipe body can be further fixedly connected with a guide piece inside the first condensation section unit and the second condensation section unit, the guide piece is located between the second capillary structure and the third capillary structure, the opposite side of the guide piece and the second capillary structure is a first guide side, and the opposite side of the guide piece and the third capillary structure is a second guide side.

[0016] The technical effects achieved by the utility model are as follows.

[0017] The novel heat pipe of the utility model can reduce the situation that the heat pipe cannot be used under the condition of reverse gravity by dividing the second capillary structure into the evaporation section capillary structure, the first condensation section capillary structure and the second condensation section capillary structure, so that the heat pipe can be effectively used under the condition of reverse gravity and the vibration force environment, and the application environment of the heat pipe is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the cutaway side view of the utility model embodiment 1;

[0019] Figure 2 is the cutaway top view of the utility model embodiment 1;

[0020] Figure 3 is the cutaway top view of the utility model embodiment 1 with the groove;

[0021] Figure 4 is the cutaway side view of the utility model embodiment 2;

[0022] Figure 5 is the cutaway top view of the utility model embodiment 2.

[0023] In the drawings, the component list represented by each sign is as follows:

[0024] 1, pipe body;2, first capillary structure;21, groove;3, second capillary structure;31, evaporation section capillary structure;32, first condensation section capillary structure;33, second condensation section capillary structure;4, third capillary structure;41, evaporation section capillary core column structure;42, first condensation section capillary core column structure;43, second condensation section capillary core column structure;44, evaporation section capillary support structure;45, first condensation section capillary support structure;46, second condensation section capillary support structure;5, guide;51, first guide side;52, second guide side. DETAILED DESCRIPTION

[0025] In order to make the purpose and the advantage of the utility model more clear and obvious, the utility model is specifically explained below in combination with the embodiment.It should be understood that the following text is only used to describe one or several specific implementation modes of the utility model, and does not strictly limit the protection scope of the utility model specifically requested.

[0026] Embodiment 1:

[0027] As Figures 1-2As shown, a new type of heat pipe includes a pipe body 1, the material of the pipe body 1 can be copper or aluminum, the inside of the pipe body 1 stores a cooling fluid, the cooling fluid can be water, or methanol, ethanol and other alcohol liquids, the inside of the pipe body 1 is fixedly connected with a first capillary structure 2, the fixed mode can be sintering forming, the inside of the first capillary structure 2 is fixedly connected with a second capillary structure 3, the material of the second capillary structure 3 can be metal powder, metal woven mesh or a combination of metal powder and metal woven mesh, and in the technical solution, copper powder is preferred.

[0028] Meanwhile, the first capillary structure 2 can be integrally formed with the pipe body 1, so as to eliminate the interface between the first capillary structure 2 and the pipe body 1 and reduce the thermal resistance, and the integral forming makes the first capillary structure 2 and the pipe body 1 form an integral whole, thereby greatly enhancing the mechanical strength and structural stability of the heat pipe.

[0029] The core of the technical solution is that the second capillary structure 3 includes an evaporation section capillary structure 31 fixedly connected to the inner wall of the first capillary structure 2, a first condensation section capillary structure 32 and a second condensation section capillary structure 33, the apertures of the evaporation section capillary structure 31, the first condensation section capillary structure 32 and the second condensation section capillary structure 33 decrease in turn.

[0030] Among them, the aperture of the evaporation section capillary structure 31 is 150-300 mesh, the part of the pipe body 1 located outside the evaporation section capillary structure 31 is an evaporation section unit, the evaporation section unit is used for thermal coupling to a heat source to heat the cooling fluid to make the cooling fluid change from liquid to gas to form steam.

[0031] Among them, the aperture of the first condensation section capillary structure 32 is 80-120 mesh, the part of the pipe body 1 located outside the first condensation section capillary structure 32 is a first condensation section unit, when the heat pipe is used in an anti-gravity environment, the steam can be liquefied at the first condensation section unit, the heat energy is transmitted to the surrounding environment through the first condensation section unit, and the liquefied cooling fluid is caused to flow back to the evaporation section capillary structure 31, thereby reducing the situation that the heat pipe cannot be used under the anti-gravity condition.

[0032] Among them, the aperture of the second condensation section capillary structure 33 is 30-80 mesh, the part of the pipe body 1 located outside the second condensation section capillary structure 33 is a second condensation section unit, when the heat pipe is used in a vibration force environment, the steam can be liquefied at the second condensation section unit, the heat energy is transmitted to the surrounding environment through the second condensation section unit, and the liquefied cooling fluid is caused to flow back to the evaporation section capillary structure 31.

[0033] Here, the above heat source can be a heating element of an electronic device such as a CPU, a GPU or a power amplifier, so that the heat pipe of the technical solution can be applied to a notebook computer or a large unmanned aerial vehicle.

[0034] The positional relationship of the evaporation section capillary structure 31, the first condensation section capillary structure 32 and the second condensation section capillary structure 33 can be arranged in any combination, and it should be noted that when the heat source is at the uppermost side of the heat pipe, the positional relationship of the evaporation section capillary structure 31, the first condensation section capillary structure 32 and the second condensation section capillary structure 33 is arranged in the order from top to bottom as the evaporation section capillary structure 31, the first condensation section capillary structure 32 and the second condensation section capillary structure 33;

[0035] When the heat source is at other positions on the outer side of the heat pipe, the positional relationship of the evaporation section capillary structure 31, the first condensation section capillary structure 32 and the second condensation section capillary structure 33 can be arranged in any combination, i.e. the positional relationship of the evaporation section capillary structure 31, the first condensation section capillary structure 32 and the second condensation section capillary structure 33 is arranged in the order from top to bottom as the first condensation section capillary structure 32, the evaporation section capillary structure 31 and the second condensation section capillary structure 33, in the order from top to bottom as the first condensation section capillary structure 32, the second condensation section capillary structure 33 and the evaporation section capillary structure 31, in the order from top to bottom as the second condensation section capillary structure 33, the evaporation section capillary structure 31 and the first condensation section capillary structure 32, or in the order from top to bottom as the second condensation section capillary structure 33, the first condensation section capillary structure 32 and the evaporation section capillary structure 31.

[0036] Preferably, the permeability of the first capillary structure 2 is greater than that of the second capillary structure 3, so that the cooling fluid can permeate faster in the first capillary structure 2, and the cooling fluid can permeate more quickly into the first capillary structure 2 in the evaporation section of the heat pipe, the capillary force of the first capillary structure 2 is smaller than that of the second capillary structure 3, and the condensed cooling fluid can be more effectively sucked back into the second capillary structure 3 in the condensation section of the heat pipe, promoting the backflow of the cooling fluid.

[0037] At the same time, as shown in Figure 3 The inner wall of the first capillary structure 2 can be provided with a plurality of grooves 21, which can increase the channel for liquid flow, and can effectively improve the capillary force and permeability of the heat pipe when combined with the second capillary structure 3.

[0038] Example 2:

[0039] As shown in Figures 4-5As shown, the embodiment further improves the mechanism of the heat pipe based on example 1, which is that the third capillary structure 4 is fixedly connected at the axial position of the pipe body 1, the part of the third capillary structure 4 located inside the evaporation section unit is the evaporation section capillary core column structure 41, the evaporation section capillary core column structure 41 is fixedly connected through the evaporation section capillary support structure 44 and the inner side of the evaporation section capillary structure 31, and the increase of the third capillary structure 4 helps to increase the evaporation area of the cooling fluid inside the evaporation section unit and improve the heat exchange efficiency.

[0040] The part of the third capillary structure 4 located inside the first condensation section unit is the first condensation section capillary core column structure 42, the first condensation section capillary core column structure 42 is fixedly connected through the first condensation section capillary support structure 45 and the inner side of the first condensation section capillary structure 32, the part of the third capillary structure 4 located inside the second condensation section unit is the second condensation section capillary core column structure 43, the second condensation section capillary core column structure 43 is fixedly connected through the second condensation section capillary support structure 46 and the inner side of the second condensation section capillary structure 33, so that the cooling fluid also has more reflux paths, further improving the heat exchange efficiency.

[0041] The materials and pores of the evaporation section capillary core column structure 41 and the evaporation section capillary support structure 44 are the same as those of the evaporation section capillary structure 31, the materials and pores of the first condensation section capillary core column structure 42 and the first condensation section capillary support structure 45 are the same as those of the first condensation section capillary structure 32, the materials and pores of the second condensation section capillary core column structure 43 and the second condensation section capillary support structure 46 are the same as those of the second condensation section capillary structure 33, and by setting the materials and pores of the third capillary structure 4, the second capillary structure 3 and the third capillary structure 4 can be divided into three sections for filling, which is more convenient.

[0042] Meanwhile, the pipe body 1 inner wall can also be fixedly connected with a guide 5 located inside the first condensation section unit and the second condensation section unit, the guide 5 is located between the second capillary structure 3 and the third capillary structure 4, the opposite side of the guide 5 and the second capillary structure 3 is the first guide side 51, the opposite side of the guide 5 and the third capillary structure 4 is the second guide side 52, and through the first guide side 51 and the second guide side 52, the steam after vaporization of the cooling fluid can be guided to the second capillary structure 3 and the third capillary structure 4 inside the first condensation section unit and the second condensation section unit, so that the steam can be more fully contacted with the second capillary structure 3 and the third capillary structure 4.

[0043] The above merely describes preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application. Structures, devices and operation methods not specifically described and explained in the present application are implemented according to conventional means in the art, unless otherwise specified and limited.

Claims

1. A novel heat pipe characterized by: The application relates to a cooling device, which comprises a pipe body (1) internally storing a cooling fluid, a first capillary structure (2) fixedly connected to the inner side of the pipe body (1), and a second capillary structure (3) fixedly connected to the inner side of the first capillary structure (2). The second capillary structure (3) comprises an evaporation section capillary structure (31) fixedly connected to the inner wall of the first capillary structure (2), a first condensation section capillary structure (32) and a second condensation section capillary structure (33), and the particle sizes of the evaporation section capillary structure (31), the first condensation section capillary structure (32) and the second condensation section capillary structure (33) gradually decrease. The part of the pipe body (1) outside the evaporation section capillary structure (31) is an evaporation section unit, the part of the pipe body (1) outside the first condensation section capillary structure (32) is a first condensation section unit, and the part of the pipe body (1) outside the second condensation section capillary structure (33) is a second condensation section unit.

2. A novel heat pipe as claimed in claim 1, wherein: The particle size of the evaporation section capillary structure (31) is 150-300 meshes, the particle size of the first condensation section capillary structure (32) is 80-120 meshes, and the particle size of the second condensation section capillary structure (33) is 30-80 meshes.

3. A novel heat pipe as claimed in claim 1, wherein: The material of the second capillary structure (3) is metal powder, metal woven mesh or a combination of metal powder and metal woven mesh.

4. A novel heat pipe as claimed in claim 1, wherein: The material of the second capillary structure (3) is copper powder.

5. A novel heat pipe as claimed in claim 1, wherein: A plurality of grooves (21) are formed in the inner wall of the first capillary structure (2).

6. A novel heat pipe as claimed in claim 1, wherein: The cooling fluid is water, methanol or ethanol, and the material of the pipe body (1) is copper or aluminum.

7. A novel heat pipe as claimed in claim 1, wherein: The first capillary structure (2) and the pipe body (1) are integrally formed.

8. A novel heat pipe according to any one of claims 1-7, characterized by: A third capillary structure (4) is fixedly connected to the axial center of the pipe body (1), the part of the third capillary structure (4) inside the evaporation section unit is an evaporation section capillary core column structure (41), and the evaporation section capillary core column structure (41) is fixedly connected to the inner side of the evaporation section capillary structure (31) through an evaporation section capillary support structure (44) on the periphery. The part of the third capillary structure (4) inside the first condensation section unit is a first condensation section capillary core column structure (42), the first condensation section capillary core column structure (42) is fixedly connected to the inner side of the first condensation section capillary structure (32) through a first condensation section capillary support structure (45) on the periphery, the part of the third capillary structure (4) inside the second condensation section unit is a second condensation section capillary core column structure (43), and the second condensation section capillary core column structure (43) is fixedly connected to the inner side of the second condensation section capillary structure (33) through a second condensation section capillary support structure (46) on the periphery.

9. A novel heat pipe as claimed in claim 8, wherein: The material and the aperture of the evaporation section capillary core column structure (41), the evaporation section capillary support structure (44) are same with the evaporation section capillary structure (31), the material and the aperture of the first condensation section capillary core column structure (42), the first condensation section capillary support structure (45) are same with the first condensation section capillary structure (32), the material and the aperture of the second condensation section capillary core column structure (43), the second condensation section capillary support structure (46) are same with the second condensation section capillary structure (33).

10. A novel heat pipe as claimed in claim 8, wherein: The inner wall of the pipe body (1) can also be fixedly connected with a guide piece (5) located inside the first condensation section unit and the second condensation section unit, the guide piece (5) is located between the second capillary structure (3) and the third capillary structure (4), the side opposite to the second capillary structure (3) of the guide piece (5) is a first guide side (51), and the side opposite to the third capillary structure (4) of the guide piece (5) is a second guide side (52).

Images