TW201901109A - Heat exchange combined structure - Google Patents

Abstract

An assembly device for heat exchange is provided with a vapor chamber and a heat pipe coupled thereto. There are wick structures at the inner surfaces of a plate assembly of the vapor chamber and a pipe body of the heat pipe. In the case of the wick structures of same thickness, the metal powder size for forming the wick structure within the pipe body is bigger than the one for forming the wick structure within the plate assembly. In the case of the wick structures of different thicknesses, the metal powder size for forming the wick structure with the pipe body is smaller than the one for forming the wick structure within the plate assembly. Such an arrangement for the assembly device for heat exchange is helpful to thermal transference in the chamber.

Description

   Heat exchange combination structure   

The invention relates to the field of a combined heat exchange structure, in particular to a combined structure of a temperature equalizing plate and a heat pipe.

The conventional temperature-equalizing plate is a plate-shaped heat pipe that injects a working liquid into an internal vacuum environment, and performs the function of heat exchange by changing the liquid-gas phase of the working fluid. The conventional temperature-equalizing plate has a plate-like shape, which is generally composed of a cover plate covered by two phases, and the two plate surfaces with a large surface area are respectively used as a heat receiving end and a heat dissipation end. The inside of the isothermal plate is generally provided with a wick structure to accelerate the vaporization and flow of the working fluid.

In order to more quickly remove the heat generated by the operation of electronic components, a temperature equalizing plate and a heat pipe are now combined as a heat sink. Taiwan Patent No. M488038 discloses a heat dissipating device with a capillary member, which includes a capillary member, the capillary member has a block close to the first capillary structure in the housing, and a through hole extending from the block and close to the second capillary structure in the heat pipe. Set Department. Taiwan Patent No. M517314 discloses a heat dissipating device. An open end of a heat pipe is inserted into an opening on the top side of the housing, and an open end is integrally extended at the open end to be connected to the bottom side of the housing in the housing cavity. Taiwan Patent No. M522331 discloses a combined structure of a heat pipe and a temperature equalizing plate. The heat pipe corresponds to a ring wall on the casing with a stop at the opening position. Taiwan Patent No. M532047 discloses a combined structure of a temperature equalizing plate and a heat pipe. A lower plate has a vertical plate in the lower case for the heat pipe to pass through. The capillary tissue extending from the heat pipe can be attached to the capillary tissue in the case. Taiwan Patent No. M533401 discloses a heat dissipation device, in which a capillary material having at least one fiber bundle in a heat pipe can contact the capillary material in the casing. Taiwan Patent No. M534370 also discloses a combined structure of a temperature equalizing plate and a heat pipe. A fixed section of the heat pipe is connected to the upper metal shell of the temperature equalizing plate, so that the capillary tissue in the heat pipe and the capillary tissue in the shell are connected.

This case provides a heat exchange combination structure, which includes a temperature equalizing plate and a heat pipe connected to the temperature equalizing plate, and both the temperature equalizing plate and the heat pipe are covered with capillary tissue. The particle size of the powder of the capillary tissue is larger than the particle size of the powder of the capillary tissue forming the isothermal plate, which can optimize the effects of heat transfer and heat dissipation.

This case provides a heat exchange combination structure, which includes a temperature equalizing plate and a heat pipe connected to the temperature equalizing plate. Both the temperature equalizing plate and the heat pipe are covered with capillary tissue. Under the premise that the capillary tissue has different thicknesses, The particle size of the powder of the capillary tissue is smaller than that of the capillary tissue forming the isothermal plate, which can optimize the effects of heat transfer and heat dissipation.

According to the above, a heat exchange combination structure includes: a temperature equalizing plate, which includes a first cover plate and a second cover plate which are relatively closed, and a first capillary tissue, the first cover plate and the second cover A hollow space is formed between the plates to form a first cavity. The first capillary tissue is exposed to the first cavity. The first capillary tissue is formed by sintering a metal powder with a first powder particle size and has a first A thickness; and a heat pipe connected to the temperature equalizing plate, which includes a pipe body and a second capillary tissue, the pipe body is hollow to form a second chamber, and the second chamber and the first chamber In communication, the second capillary tissue is disposed in the tube body and exposed to the second chamber, wherein the second capillary tissue is formed by sintering a metal powder with a second powder particle size and has the first thickness. The second powder has a larger particle size than the first powder.

In one example, the pipe body includes an open end and a closed end connected to the temperature equalizing plate, and the open end is fixed to an opening in the temperature equalizing plate by means of high frequency, brazing or laser welding.

In one example, the heat exchange assembly structure further includes a working fluid filled in the first chamber and the second chamber.

In one example, the pipe body is a round pipe, an oval pipe or a flat pipe.

In one example, the first capillary tissue is adjacent to the second capillary tissue.

In one example, the heat exchange composite structure further includes a plurality of support pillars distributed in the first chamber and abutting between the first cover plate and the second cover plate.

In one example, any of the supporting columns is a capillary structure or a solid structure or a mixture of the two.

In one example, the support pillars are sintered from a metal powder having a third powder particle size, and the third powder particle size is larger than the first powder particle size.

According to the above, a heat exchange combination structure includes: a temperature equalizing plate, which includes a first cover plate and a second cover plate which are relatively closed, and a first capillary tissue, the first cover plate and the second cover A hollow space is formed between the plates to form a first cavity. The first capillary tissue is exposed to the first cavity. The first capillary tissue is formed by sintering a metal powder with a first powder particle size and has a first A thickness; and a heat pipe connected to the temperature equalizing plate, which includes a pipe body and a second capillary tissue, the pipe body is hollow to form a second chamber, and the second chamber and the first chamber In communication, the second capillary tissue is disposed in the tube body and exposed to the second chamber, wherein the second capillary tissue is formed by sintering a metal powder with a second powder particle size and has a thickness different from the first thickness. A second thickness, and the particle size of the second powder is smaller than the particle size of the first powder.

In one example, the pipe body includes an open end and a closed end connected to the temperature equalizing plate, and the open end is fixed to an opening in the temperature equalizing plate by means of high frequency, brazing or laser welding.

In one example, the heat exchange assembly structure further includes a working fluid filled in the first chamber and the second chamber.

In one example, the pipe body is a round pipe, an oval pipe or a flat pipe.

In one example, the first capillary tissue is adjacent to the second capillary tissue.

In one example, the heat exchange composite structure further includes a plurality of support pillars distributed in the first chamber and abutting between the first cover plate and the second cover plate.

In one example, any of the supporting columns is a capillary structure or a solid structure or a mixture of the two.

In one example, the support pillars are sintered from a metal powder having a third powder particle size, and the third powder particle size is larger than the first powder particle size.

According to the above, a heat exchange combination structure includes a temperature equalizing plate and a heat pipe connected, and the casing of the temperature equalizing plate and the body of the heat pipe are covered with capillary tissue, and under the premise that the capillary tissue is the same thickness, The particle diameter of the capillary tissue in the tube forming the heat pipe is larger than the particle diameter of the capillary tissue in the casing forming the temperature plate; and the particle diameter of the capillary tissue in the tube forming the heat pipe is less than The particle size of the powder forming the capillary structure in the casing of the isothermal plate. The above design can optimize the heat transfer effect of the isothermal plate.

5‧‧‧heat exchange combination structure

10‧‧‧ Uniform temperature plate

12‧‧‧ the first chamber

22‧‧‧First cover

221‧‧‧ inside

24‧‧‧Second cover

241‧‧‧ inside

25‧‧‧ opening

28‧‧‧ sidewall

281‧‧‧ inside

29‧‧‧ extension

50‧‧‧ first capillary

60‧‧‧ support post

70‧‧‧heat pipe

72‧‧‧ tube body

73‧‧‧Second Chamber

74‧‧‧ second capillary

75‧‧‧ open end

77‧‧‧ closed end

FIG. 1 is a partial structural explosion diagram of the heat exchange combination structure of the present case.

FIG. 2 is a schematic structural cross-sectional view of a part of the heat exchange combined structure of the present case.

FIG. 3 is a schematic structural cross-sectional view of another part of the heat exchange combined structure of the present application.

For the convenience of explanation, the structure, organization, or component of the temperature equalizing plate and the heat pipe in the drawings of this case do not depend on the proportion of the application, but need to be enlarged in proportion according to the description. This is not intended to limit the temperature equalizing plate and the heat pipe in this case. Implementation.

The plate body hereinafter referred to in the present case refers to an area where two surfaces that are opposite in appearance are far larger than the area of a side wall between the two surfaces, and can generally be formed by combining two cover plates that are closed together. Secondly, according to the relative action, the two cover plates can be divided into a cover plate that contacts or is close to the heat source and a cover plate that functions as a heat sink. The geometry of the two can be the same or different, and the side wall can be at least one of the two cover plates. It is provided integrally, but the present case is not limited thereto. Although the two cover plates are drawn or described in the following plane, either cover plate can also be designed into an arc shape or other shapes as required. In addition, the interior of the plate is hollow to form a hollow chamber. For convenience of explanation, the cavity covered by the two cover plates and interposed between the two plates is the first chamber described below. The internal hollow space of other assemblies or other structures such as heat pipes is the second or third chamber and so on.

The capillary structure or structure referred to below in this case refers to a structure or structure having a plurality of capillary pores or interconnected pores, which are generally formed by woven mesh or powder sintering or combining the two. In the example formed by sintering with metal powder, when the powder with a larger powder particle size is sintered, the capillary pore size is larger and the capillary density is lower; in the example formed using a woven mesh, the woven mesh used has a smaller mesh number , The larger the capillary pore size, the lower the capillary density; conversely, the smaller the capillary pore size, the higher the capillary density. It can be understood that the capillary pore size or the particle size of the powder here can be expressed by a numerical value or a range of values, and it is not necessary that each capillary pore size or the particle size of the powder is the same.

FIG. 1 is a partial structural explosion diagram of the heat exchange combination structure of the present case. FIG. 2 is a schematic structural cross-sectional view of a part of the heat exchange combined structure of the present case. Please refer to FIG. 1 to FIG. 2, the heat exchange combination structure 5 includes a temperature equalizing plate 10 and one or more heat pipes 70 connected to the temperature equalizing plate 10. In one embodiment, the temperature equalizing plate 10 includes a first cover plate 22 and a second cover plate 24. The first cover plate 22 and the second cover plate 24 opposite to each other define a hollow space inside the plate body 20 and are represented by the first chamber 12. Secondly, the temperature equalizing plate 10 further includes a first capillary tissue 50 exposed in the first chamber 12, which is disposed on the inner surfaces of the first cover plate 22 and the second cover plate 24. A working fluid (not shown) is disposed in the first chamber 12, and the first capillary tissue 50 contacts the working fluid.

Continuing to refer to FIGS. 1-2, the temperature equalizing plate 10 has one or more openings 25. In this embodiment, the openings 25 are provided on the side walls 28 of the first cover plate 22 and the second cover plate 24. A part of the penetration is washed out on the side walls 28 of the first cover 22 and the second cover 24, respectively. When the first cover 22 and the second cover 24 are closed to each other, a complete opening 25 is formed. Defined by an extension 29 protruding from the side wall 28. However, this case is not limited. Under different cover plate designs, the opening 25 can be realized only by providing a penetration at the side wall of the first cover plate 22 or the second cover plate 24, or by the first cover plate 22 or the second cover plate. The surface of the cover plate 24 is provided with a penetrating point to achieve it. Second, the first capillary tissue 50 is distributed on the inner surface 221 of the first cover plate 22, the inner surface 241 of the second cover plate 24, and the inner surface 281 of the side wall 28, and is adjacent to the edge of the opening 25.

Continuing to refer to FIGS. 1 and 2, the heat pipe 70 connected to the temperature equalizing plate 10 includes a pipe body 72 and a second capillary tissue 74, wherein the inside of the pipe body 72 is hollow to form a second cavity 73 and the second capillary. The tissue 74 is disposed in the tube body 72 and is exposed in the second chamber 73. In one embodiment, the tube body 72 includes an open end 75 connected to the opening 25 of the temperature equalizing plate 10 and a closed end 77 at the distal end. When the tube body 72 is fixed to the opening 25 of the temperature equalizing plate 10, the second The cavity 73 may be in communication with the first cavity 12, and the working fluid may be filled in the first cavity 12 and the second cavity 73. Secondly, viewed from the cross section of the open end 75 of the pipe body 72, the pipe body 72 may be a round pipe, an oval pipe, or a flat pipe, but the present invention is not limited to the above. In addition, the open end 75 and the closed end 77 of the pipe body 72 may be a straight pipe or a bent pipe. For fixing the heat pipe 70 and the temperature equalizing plate 10, the open end 75 of the pipe body 72 can be placed at the extension 29 of the temperature equalizing plate 10, and then the open end 75 can be fixed by high frequency, brazing or laser welding. To the opening 25 in the temperature equalizing plate 10, and the second capillary tissue 74 in the tube body 72 is adjacent to the first capillary tissue 50 of the temperature equalizing plate 10.

Continuing to refer to FIGS. 1-2, the first capillary structure 50 is formed by sintering a metal powder with a first powder particle size and has a first thickness, and the second capillary structure 74 is formed by sintering a metal powder with a second powder particle size and Has a second thickness. In an embodiment of the present invention, under the premise that the first thickness and the second thickness are equal, the particle size of the powder forming the second capillary tissue 74 in the tube body 72 is larger than that of the first capillary tissue 50 in the isothermal plate 10 Particle size. In another embodiment of the present invention, under the premise that the first thickness and the second thickness are different, the particle size of the powder forming the second capillary tissue 74 in the tube body 72 is smaller than that in the first temperature forming plate 10. The powder particle size of the capillary tissue 50.

FIG. 3 is a schematic structural cross-sectional view of another part of the heat exchange combined structure of the present application. Please refer to FIG. 1 to FIG. 3. The temperature equalizing plate 10 further includes a plurality of supporting posts 60 distributed in the first chamber 12 and abutting between the first cover plate 22 and the second cover plate 24. In one embodiment, the support post 60 may be a solid, smooth or rough surface (for example, with grooves or irregularities), or a capillary structure as a whole (for example, with pores distributed therein); or a combination of solid and capillary structure. When the support pillars 60 are also formed by sintering metal powder, the particle diameter of the metal powder (the third particle diameter) forming the support pillars 60 is larger than the particle diameter of the metal powder (the first powder) forming the first capillary structure 50. Particle size).

It must be explained here that the detailed description given above in conjunction with the drawings is only an embodiment provided to explain the technical content and characteristics of the present invention. Those who have general general knowledge in the field of the present invention will understand this. After the technical content and features of the invention, without departing from the spirit of the present invention, all the simple modifications, replacements or reductions of components should fall within the scope of the patent application disclosed below.

Claims (16)

    A heat exchange combination structure includes: a temperature equalizing plate, which includes a first cover plate and a second cover plate which are relatively closed, and a first capillary tissue, between the first cover plate and the second cover plate; Forming a first cavity for hollow, the first capillary tissue is exposed in the first cavity, wherein the first capillary tissue is formed by sintering a metal powder with a first powder particle size and has a first thickness; And a heat pipe connected with the temperature equalizing plate, comprising a pipe body and a second capillary tissue, the pipe body is hollow to form a second chamber, and the second chamber is in communication with the first chamber, The second capillary tissue is disposed in the tube and is exposed to the second chamber, wherein the second capillary tissue is formed by sintering a metal powder with a second powder particle size and has the first thickness, the second powder The particle size is larger than the first powder particle size.         The heat exchange composite structure according to claim 1, wherein the pipe body includes an open end and a closed end connected to the temperature equalizing plate, and the open end is fixed to the heat sink by high frequency, brazing, or laser welding. An opening in the temperature equalizing plate.         The heat exchange combination structure according to claim 1, further comprising a working fluid filled in the first chamber and the second chamber.         The heat exchange composite structure according to claim 1, wherein the pipe body is a round pipe, an oval pipe or a flat pipe.         The heat exchange composite structure according to claim 1, wherein the first capillary tissue is adjacent to the second capillary tissue.         The heat exchange combination structure according to claim 1, further comprising a plurality of support columns distributed in the first chamber and abutting between the first cover plate and the second cover plate.         The heat exchange composite structure according to claim 6, wherein any one of the support columns is a capillary structure or a solid structure or a mixture of the two.         The heat exchange composite structure according to claim 6, wherein the support pillars are sintered from a metal powder having a third powder particle size, and the third powder particle size is larger than the first powder particle size.         A heat exchange combination structure includes: a temperature equalizing plate, which includes a first cover plate and a second cover plate which are relatively closed, and a first capillary tissue, between the first cover plate and the second cover plate; Forming a first cavity for hollow, the first capillary tissue is exposed in the first cavity, wherein the first capillary tissue is formed by sintering a metal powder with a first powder particle size and has a first thickness; And a heat pipe connected with the temperature equalizing plate, comprising a pipe body and a second capillary tissue, the pipe body is hollow to form a second chamber, and the second chamber is in communication with the first chamber, The second capillary tissue is disposed in the tube body and exposed to the second chamber, wherein the second capillary tissue is formed by sintering a metal powder with a second powder particle size and has a first thickness different from the first thickness. Two thicknesses, and the particle size of the second powder is smaller than the particle size of the first powder.         The heat exchange composite structure according to claim 9, wherein the pipe body includes an open end and a closed end connected to the temperature equalizing plate, and the open end is fixed to the heat sink by high frequency, brazing, or laser welding. An opening in the temperature equalizing plate.         The heat exchange combination structure according to claim 9, further comprising filling a working fluid into the first chamber and the second chamber.         The heat exchange composite structure according to claim 9, wherein the pipe body is a round pipe, an oval pipe or a flat pipe.         The heat exchange composite structure according to claim 9, wherein the first capillary tissue is adjacent to the second capillary tissue.         The heat exchange combination structure according to claim 9, further comprising a plurality of support columns distributed in the first chamber and abutting between the first cover plate and the second cover plate.         The heat exchange composite structure according to claim 14, wherein any one of the support columns is a capillary structure or a solid structure or a mixture of the two.         The heat exchange composite structure according to claim 14, wherein the support pillars are sintered from a metal powder having a third powder particle size, and the third powder particle size is larger than the first powder particle size.