CN201364062Y - Sintered heat pipe type soaking plate with convex platform - Google Patents

Abstract

A sintered heat pipe type soaking plate with convex platforms comprises a shell and a vacuum cavity, wherein a sintered round pipe is flattened to serve as the soaking plate, the shell is provided with a first plane and a second plane, the first plane is provided with at least one convex platform, the convex platform is a flat plane and is in contact with a heating component, and an inclined plane with a certain gradient is arranged between the convex platform and the first plane; the second plane is flat in surface and is in contact with the heat dissipation assembly. The vacuum cavity is internally provided with a capillary structure, a working fluid and at least one supporting body. This design enables soaking plate and heating element, radiator unit in close contact for the heat of heat source obtains effectual diffusion, makes the timely evaporation face that flows back of condensation surface working fluid simultaneously, thereby improves the heat-sinking capability.

Description

Sintered Heat Pipe Vapor Chamber with Convex Table

【Technical field】

The utility model relates to a sintered heat pipe type soaking plate with a convex platform, in particular to a sintered heat pipe type soaking plate with at least one convex platform on the evaporation surface.

【Background technique】

With the continuous development of electronic technology, the operating frequency of electronic components is getting higher and higher, and the heat flux generated is also increasing. Electronic heat dissipation technology has also been highly valued by the industry. Electronic heat dissipation has the following significant trends: local heat flux density is high, heat flux distribution is uneven, high heat flux is confined to a small space, and so-called hot spots are prone to occur, and electronic equipment is prone to instantaneous power surges during the startup process, but The total amount of heat that needs to be dissipated is not very large (probably no more than 500W).

In order to solve the above problems, different types of vapor chambers are widely used in the field of electronic heat dissipation technology, among which the heat pipe type vapor chamber has the most remarkable heat dissipation effect. Various forms of heat pipe vapor chambers have been proposed, but most of them use upper and lower flat plates to form a closed space, and put capillary structures and support structures on the inner walls of the two flat plates. The capillary structures include wire mesh, porous metal materials And fabricate the porous capillary structure directly on the supporting structure. However, as the requirements for vapor chambers are getting higher and higher, sintered heat pipe vapor chambers have also appeared. The sufficient capillary force and the relatively small contact thermal resistance between the capillary structure and the inner surface of the shell improve the heat dissipation efficiency, but the sintered Due to the need for high-temperature sintering of the type heat pipe type vapor chamber, its mechanical strength is not enough, and the surface flatness of the vapor chamber is not enough, which affects the problem of large contact thermal resistance between the vapor chamber, the heat source, and the heat sink.

【Content of utility model】

The main purpose of the utility model is to overcome the deficiencies of the prior art and provide a sintered heat pipe vapor chamber with a convex platform, which can make the evaporating surface and the heat source closely contact, and the condensing surface and the heat dissipation fins closely contact each other. contact, thereby reducing the thermal contact resistance between the vapor chamber, the heat source, and the heat sink, and improving the heat dissipation capacity.

Another purpose of the utility model is that after the working fluid forms steam, it can quickly diffuse from the evaporation surface, and the working fluid condensate on the condensation surface can quickly flow back to the evaporation surface, thereby forming a fast working fluid circulation system and improving the uniform heat The heat dissipation capability of the board.

The purpose of this utility model is achieved in that;

A sintered heat pipe type vapor chamber with a convex platform, the features of which include:

A sintered circular tube is flattened as the shell of the vapor chamber, the shell has a first plane and a second plane, the first plane has at least one convex platform, and an inclined surface is provided between the convex platform and the first plane.

A vacuum cavity between the first plane and the second plane, the cavity includes a capillary structure, a working fluid and at least one support body.

The above-mentioned sintered heat pipe type heat chamber with a convex platform is characterized in that the shell of the heat chamber is made of copper or aluminum metal material.

The above-mentioned sintered heat pipe type vapor chamber with a convex platform is characterized in that the shape of the convex platform can be changed according to the shape and size of the heating component, including triangle, quadrangle, circle and polygon.

The above-mentioned sintered heat pipe vapor chamber with convex platform is characterized in that the capillary structure in the vacuum chamber is a metal sintered capillary core.

The above-mentioned sintered heat pipe vapor chamber with a convex platform is characterized in that the working fluid in the vacuum chamber is deionized water, ethanol, ammonia water, etc.

The above-mentioned sintered heat pipe vapor chamber with convex platform is characterized in that the material of the support in the vacuum cavity is one of copper, nickel and their mixtures, and has a porous structure.

Compared with the prior art, the utility model has the following advantages:

1. The utility model can well reduce the contact thermal resistance of the vapor chamber, the heat source and the heat sink.

2. The convex platform structure described in the utility model can make the steam in the steam chamber diffuse rapidly in the two-dimensional direction, greatly reduce the thermal diffusion resistance of the vapor chamber, and have good temperature uniformity performance.

3. The slope of the convex table and the first plane described in the utility model is convenient for the working liquid to flow back to the evaporation surface in time.

4. The heat dissipation power of the utility model is large, which can solve the problem of increasing heat flux density of heating components.

5. The utility model can solve the heat dissipation problem of multiple heat sources.

6. The utility model has a simple manufacturing process and can realize mass production.

【Description of drawings】

Below by specific embodiment cooperate accompanying drawing to illustrate in detail, when easier to understand the utility model purpose, technical content, characteristic and the effect achieved thereof, wherein:

Fig. 1 is the sectional view of the sintered heat pipe type vapor chamber of the utility model with a convex platform;

Fig. 2 is a cross-sectional view of a sintered heat pipe type vapor chamber with two convex platforms of the present invention.

Drawing logo:

10-The first plane of the shell 11-The second plane of the shell

12-convex table 13-inclined surface

14-Capillary structure 15-Support

【Detailed ways】

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described:

As shown in Figures 1 and 2, there is a sintered heat pipe vapor chamber with a convex platform, including the first plane 10 of the flattened shell, the second plane 11, the convex platform 12, the inclination of the convex platform and the first plane Surface 13 , capillary structure 14 , support 15 .

The capillary structure 14 is formed by sintering the inner wall of the circular tube filled with the metal powder.

The convex platform 12 is a convex platform that is punched out by using a mold after pre-pressing the round tube with the sintered capillary structure to a certain thickness. The shape of the convex platform is mainly controlled by the shape of the stamping mold. There is an inclined surface 13 with a certain slope between the convex platform and the first plane.

The support body 15 is a support body with a boss shape that is directly inserted into the vacuum cavity by using wire meshes of different meshes or directly stamped according to the shape of the convex shape; The mesh number of the screen, and then design the shape of the support structure according to the application of the convex platform of the vapor chamber. If there are multiple heat sources, such as hollow or convex shapes, the punching thickness is based on the capillary structure that makes the support structure withstand the upper and lower sides.

The round tube sintered with a capillary structure on the inner wall is pre-pressed, and then the convex platform 12 is pressed out by a stamping die, the support structure 15 is inserted into the pre-pressed shell, and the edge is formed again. The first plane and the second plane are pressed together, and a small hole is left at the same time, which is convenient for welding the liquid injection pipe. After the sealing is completed, inject liquid, vacuumize, seal the liquid injection pipe, and the soaking plate is completed.

Claims (6)

1. slug type heat pipe-type soaking plate with convex platform, its feature comprises:

One sintering pipe flattens the shell as soaking plate, and this shell has first plane (10) and second plane (11), and first plane (10) have at least one convex platform (12), are provided with an inclined plane (13) between convex platform (12) and first plane (10);

Vacuum cavity between one first plane (10) and second plane (11) comprises a capillary structure (14) in this cavity, a working fluid and at least one supporter (15).

2. soaking plate according to claim 1 is characterized in that the shell of described soaking plate is made by metal materials such as copper, aluminium.

3. soaking plate according to claim 1 is characterized in that the shape of described convex platform (12) can change according to the geomery of heat generating component, comprises triangle, quadrangle, circle, polygon.

4. soaking plate according to claim 1 is characterized in that the capillary structure (14) in the described vacuum cavity is the metal sintering capillary wick.

5. soaking plate according to claim 1 is characterized in that the working fluid in the described vacuum cavity is deionized water, ethanol, ammoniacal liquor etc.

6. soaking plate according to claim 1 is characterized in that supporter (15) material in the described vacuum cavity is one of group of copper, nickel and composition thereof, and is cellular structure.

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