TWM622251U - Heat pipe capable of resisting saturated vapor pressure - Google Patents

Abstract

The new type is a heat pipe capable of resisting saturated vapor pressure, which comprises a pipe body, the pipe body is a hollow and closed pipeline structure and has a ring inner wall inside; a support part is protruded from the ring inner wall of the pipe body and is Extends along the axial direction of the tube body; by protruding a support structure inside the tube body, it achieves the effect of increasing the overall rigidity of the heat pipe without additional support structures, and the tube body can resist the pressure of saturated steam pressure , in line with the requirements of vehicle regulations, it can be installed in the high temperature area of the engine room.

Description

Heat Pipes Resistant to Saturated Vapor Pressure

The new system relates to a heat pipe, especially a heat pipe capable of resisting saturated vapor pressure.

The main structure of the heat pipe in the prior art is a closed hollow pipe body containing a working fluid, and because one end is heated and the other end releases heat, the internal working fluid can be continuously circulated and convected by the liquid-vapor two-phase change, and the transmission is achieved. The effect of heat, there is an ultra-thin heat pipe such as Taiwan Invention Publication No. TW 201038896A1, which includes a flat metal tube and at least one powder sintering part, and the flat metal tube includes an upper side pipe wall, a lower side pipe wall and two side pipe walls Each side tube wall is connected to the upper tube wall and the lower tube wall and is located between the upper tube wall and the lower tube wall, and the powder sintered part extends along the axial direction of the flat metal tube and is partially formed on the upper tube wall and the lower tube wall. One of the pipe wall and the side pipe walls is such that a vapor passage space is formed on at least one side of the powder sintered part.

However, when the aforementioned heat pipe is used in a vehicle, it is mainly used for heat dissipation of the cooling system and electronic equipment, and the cooling system and electronic equipment are mostly installed in the high-temperature engine room, so when the engine is in a high-temperature environment (about greater than 180°C) or under heavy load, it is easy to cause high temperature and high pressure inside the heat pipe. When the pressure is greater than the maximum pressure that the tube wall structure of the heat pipe can bear, it will easily lead to the occurrence of pipe breakage; therefore, the prior art The overall structure of the heat pipe has the aforementioned problems and shortcomings, and needs to be improved.

In view of the deficiencies of the prior art, the present invention provides a heat pipe capable of resisting saturated vapor pressure, which achieves the purpose of improving the rigidity of the pipe body by protruding a support portion in the pipe body.

In order to achieve the above-mentioned new purpose, the technical means adopted by this new model is to design a heat pipe that can resist saturated vapor pressure, which includes: a pipe body, which is a hollow closed pipe structure and has a ring inner wall inside; a support part, which is protruded from the inner ring wall of the pipe body and extends along the axial direction of the pipe body.

Further, in the heat pipe capable of resisting saturated vapor pressure, the cross section of the pipe body is elliptical, and two radially opposite ends of the support portion are respectively connected to the inner ring wall of the pipe body.

Further, in the heat pipe capable of resisting saturated vapor pressure, two sintered parts are arranged in the pipe body, each of the sintered parts extends along the axial direction of the pipe body, and each of the sintered parts is located on the side of the support part, respectively. opposite sides.

Further, in the heat pipe capable of resisting saturated vapor pressure, each of the sintered parts is copper powder after sintering.

Further, in the heat pipe capable of resisting saturated vapor pressure, the support portion is a rectangular elongated body.

Further, in the heat pipe capable of resisting saturated vapor pressure, a plurality of drainage holes penetrate through the support portion, and the drainage holes extend along the axial direction of the support portion and are arranged at intervals.

The advantage of the new type is that, by protruding a support structure inside the pipe body, the overall rigidity of the heat pipe can be increased without adding other support structures, and the pipe body can resist saturated steam pressure and meet the requirements of vehicle regulations Can be installed in high temperature areas in the engine room.

The technical means adopted by the present invention to achieve the predetermined purpose of the new model are further described below in conjunction with the drawings and the preferred embodiments of the present invention.

Please refer to FIG. 1 and FIG. 2 , which is a heat pipe 10 capable of resisting saturated vapor pressure according to a first embodiment of the novel, which includes a pipe body 11 and a support portion 12 .

The pipe body 11 is a hollow and closed pipeline structure, and the interior of the pipe body 11 has a ring inner wall 111. In this embodiment, the section of the pipe body 11 is circular, but not limited to this. The shape can be changed according to the user's needs. The aforementioned inner wall 111 of the tube body 11 is provided with a capillary structure (not shown in the drawings), which is a heat pipe structure in the prior art, so it will not be described in detail.

The support portion 12 is protruded from the inner ring wall 111 of the tube body 11 and extends along the axial direction of the tube body 11 . In this embodiment, the support portion 12 is in the shape of a rib of a rectangular elongated body, but not limited to this. , the shape of the support portion 12 can be changed according to user needs.

Please refer to FIG. 3 and FIG. 4 , which is a second embodiment of the new type, wherein the section of the pipe body 11A is approximately elliptical. , and the two diametrically opposite ends of the support portion 12A are respectively connected to the inner ring wall 111A of the pipe body 11A, and the connection method can be connected by diffusion welding, but not limited thereto.

When the present invention is used, please refer to FIG. 5 . Taking an automobile chip heat dissipation module as an example, the automobile chip heat dissipation module includes a base 20 , a plurality of heat pipes 10 of the present invention and a plurality of heat dissipation fins 30 . The base 20 It is a piece and has a through hole 21 penetrating through it. The through hole 21 is a rectangular hole and its shape corresponds to the shape of an automobile chip. The heat pipes 10 of the present invention are arranged adjacently and fixed on one side of the base 20 from one end of the through hole 21 to the other end. Extending, each of the heat pipes 10 of the present invention is passed through and fixed to each of the heat dissipation fins 30, and each of the heat pipes 10 of the present invention simultaneously forms a pipe body 11A with a flat section and a pipe body 11 with two circular sections. The section 11A is the embodiment in which the section of the tube body 11A is approximately elliptical, the tube body 11 in the circular section is the embodiment in which the section of the tube body 11 is circular, and the tube body 11A in the flat section is located at Between the tube bodies 11 of each round section and the tube body 11A of the flat section is adjacent to the position of the through hole 21, one side is used to abut against the automotive chip (not shown in the figure), and the other side is connected to each The heat dissipation fins 30 are combined, and the tube bodies 11 of each circular section are combined with each heat dissipation fin 30 .

In the aforementioned process, since the outer surface of the tube body 11A of the flat section has a flat shape, the contact area with the chip of the automobile can be increased to achieve the effect of improving heat conduction, and the inner part of the tube body 11A of the flat section has a support part 12A structure, the inner part of the pipe body 11 of the circular section has the structure of the supporting part 12, so the overall rigidity of the heat pipe can be increased without additional supporting structures, and it can resist the pressure of saturated steam. It can be installed in the High temperature areas in the engine room.

Please refer to FIG. 8 and FIG. 9 , which is a third embodiment of the present invention, wherein the tube body 11B is an oblate tube, and the two radially opposite ends of the support portion 12B are respectively connected to the annular inner wall 111B of the tube body 11B, which The connection method can be connected by diffusion welding, but it is not limited to this. The main difference between the third embodiment and the second embodiment is the capillary structure in the tube body 11B. Specifically, the tube body 11B is provided with two sintered Each sintered portion 13B is a capillary structure formed by sintering copper powder, and each sintered portion 13B is arranged on two sides relative to the support portion 12B, and extends along both ends of the pipe body 11B, in other words, the support portion 12B and each sintering portion 13B are elongated columnar bodies arranged at intervals. In this embodiment, the support portion 12B is provided with a plurality of drainage holes 121B, and the drainage holes 121B are arranged at intervals along the axial direction of the support portion 12B. 121B allows the working fluids located on both sides of the support portion 12B to communicate with each other when the present invention operates to enhance the operation performance of the heat pipe, and also achieve the effect of reducing the overall weight.

The manufacturing method of the heat pipe capable of resisting the saturated vapor pressure of the third embodiment of the present invention is manufactured by the following steps:

a. Referring to FIG. 6, a center rod 40B is placed in the pipe body 11B. The center rod 40B is a cross-shaped cylindrical body. The center rod 40B divides the inner space of the pipe body 11B into four spaces. ;

b. Fill each space surrounded by the center rod 40B and the tube body 11B with copper powder;

c. Sintering the copper powder;

d: as shown in FIG. 7 , before the copper powder is sintered and not yet solidified, the center rod 40B is removed, and four sintered units are formed in the tube at this time;

e: put the support portion 12B in the space formed by removing the center rod 40B;

f: Please refer to FIG. 8 , before each sintering unit is solidified, apply weight to the tube body 11B, so that the upper and lower opposite sintering units are connected to form a complete sintering unit 13B. The position of the body 11B relative to the support portion 12B is welded, preferably by diffusion welding, but not limited thereto.

The above description is only the preferred embodiment of the present creation, and does not limit the present creation in any form. Although the present creation has been disclosed as above with the preferred embodiments, it is not intended to limit the present creation. Those of ordinary knowledge, without departing from the scope of the technical solution of this creation, can make some changes or modifications by using the technical content disclosed above as equivalent embodiments of equivalent changes, provided that any content that does not depart from the technical solution of this creation, according to this The technical essence of the creation Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solution of the creation.

10: Heat pipe 11: Tube body 11B: Tube body 11A: Tube body 111: Ring inner wall 111A: Ring inner wall 111B: Ring inner wall 12: Support part 12A: Support part 12B: Support part 121B: Drainage hole 13B: Sintering part 20: base 21: Perforation 30: cooling fins 40B: Center Rod

FIG. 1 is a three-dimensional appearance view of the first embodiment of the present invention. FIG. 2 is a cross-sectional view of the first embodiment of the present invention. FIG. 3 is a three-dimensional appearance view of the second embodiment of the present invention. FIG. 4 is a cross-sectional view of the second embodiment of the present invention. Figure 5 is a schematic diagram of the use of the new model. FIG. 6 is a schematic diagram of the manufacturing steps a to c of the present invention. FIG. 7 is a schematic diagram of the manufacturing step e of the present invention. FIG. 8 is a schematic diagram of a third embodiment of the present invention. FIG. 9 is a partial cross-sectional view of the third embodiment of the present invention.

10: Heat pipe

11: Tube body

111: Ring inner wall

12: Support part

Claims (6)

A heat pipe resistant to saturated vapor pressure, comprising: a pipe body, which is a hollow closed pipe structure and has a ring inner wall inside; a support part, which is protruded from the inner ring wall of the pipe body and extends along the axial direction of the pipe body. The heat pipe capable of resisting saturated vapor pressure as claimed in claim 1, wherein the cross section of the pipe body is elliptical, and two radially opposite ends of the support portion are respectively connected to the inner ring wall of the pipe body. The heat pipe capable of resisting saturated vapor pressure as claimed in claim 2, wherein two sintering parts are arranged in the pipe body, each of the sintered parts extends along the axial direction of the pipe body, and each of the sintered parts is located at the edge of the support part, respectively. opposite sides. The heat pipe capable of resisting saturated vapor pressure according to claim 3, wherein each of the sintered parts is copper powder after sintering. The heat pipe capable of resisting saturated vapor pressure according to any one of claims 1 to 4, wherein the support portion is a rectangular elongated body. The heat pipe capable of resisting saturated vapor pressure according to claim 5, wherein a plurality of drainage holes penetrate through the support portion, and the drainage holes extend along the axial direction of the support portion and are arranged at intervals.

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