CN206739948U - Temperature equalizing plate - Google Patents

Abstract

The utility model provides a temperature-uniforming plate, which comprises a plate body, a metal block and a capillary tissue. The plate body is hollow to form a first chamber, and is provided with a protruding part protruding towards the outer surface of the plate body, wherein a second chamber is formed inside the protruding part. The metal block is arranged in the second cavity and is provided with a first surface facing the first cavity. The capillary tissue is exposed in a first chamber, which is disposed on the inner face of the plate body and on the first surface of the metal block. Therefore, the utility model discloses can accelerate the conduction and come from the heat transfer effect of heating source, optimization temperature-uniforming plate.

Description

vapor chamber

technical field

The utility model relates to the technical field of heat conduction, in particular to a uniform temperature plate.

Background technique

The existing vapor chamber is a plate-shaped heat pipe, which injects working fluid into the internal vacuum environment, and performs the function of heat exchange through the liquid-gas phase change of the working fluid. Existing vapor chambers have a plate-like shape, and are generally composed of two-phase cover plates, using the two plate surfaces with large surface areas as the heating end and the heat dissipation end respectively. The interior of the vapor chamber is generally provided with a wick structure to accelerate the vaporization and flow of the working fluid.

China Taiwan Patent No. I524047 discloses a vapor chamber with a composite capillary structure, and the composite capillary structure has the functions of liquid storage, transmission and support respectively. US Patent No. 6,082,443 discloses that a metal mesh structure is arranged in the chamber between two cover plates to increase the radiation area of the working fluid in gaseous state.

Utility model content

The technical problem to be solved by the utility model is to provide a vapor chamber with a built-in metal block close to the heat source, which can accelerate the conduction of heat from the heat source.

The technical scheme adopted by the utility model to solve the technical problem is to provide a uniform temperature plate, which includes a plate body, a metal block and capillary tissue. The inside of the plate body is hollow to form a first chamber, and the plate body has a protruding portion protruding to the outside of the plate body, wherein a second cavity is formed inside the protruding portion; the metal block is disposed in the second cavity and has a first surface facing the first cavity ; The capillary tissue is exposed in the first chamber, which is disposed on the inner surface of the plate body and the first surface of the metal block.

Preferably, the first surface of the metal block is formed with a plurality of parallel or mesh-shaped grooves or a plurality of columnar protrusion structures combined with the capillary tissue.

Preferably, the plurality of grooves or columnar protrusion structures are formed by etching.

Preferably, the metal block is combined with the protruding part by sintering or brazing, and is fixed in the second cavity.

Preferably, the capillary structure includes a first capillary portion with a first capillary diameter and a second capillary portion with a second capillary diameter, the first capillary diameter and the second capillary diameter are the same or different.

Preferably, the first capillary portion and the second capillary portion are stacked or adjacently arranged on the inner surface of the plate body and the first surface of the metal block.

Preferably, when the first capillary portion and the second capillary portion are adjacent to each other, the second capillary portion is disposed on the first surface of the metal block and the first capillary portion surrounds the second capillary portion and It is arranged on the inner surface of the plate body, and the first capillary diameter is larger than the second capillary diameter.

Preferably, the plate body is relatively covered by a first cover plate and a second cover plate having the protruding portion, the first capillary portion is attached to the inner surface of the first cover plate and the second capillary portion It is attached to the inner surface of the second cover plate and the first surface of the metal block.

Preferably, the first capillary diameter is larger than the second capillary diameter.

Preferably, the temperature chamber further includes a support column structure distributed in the first chamber and abutted between the first cover plate and the second cover plate.

Preferably, the support column structure is a capillary structure or a solid structure or a combination of capillary structure and solid structure.

Preferably, the capillary structure is a woven mesh or sintered from powder or partly woven mesh and partly sintered from powder.

Preferably, the vapor chamber is further provided with a working fluid in the first chamber, and the capillary tissue is in contact with the working fluid.

Preferably, the metal block is made of copper or gold.

Preferably, the temperature chamber further includes a plurality of support columns distributed in the first chamber and abutting against the inner surface of the plate body.

Preferably, the plurality of supporting pillars contact the capillary tissue, and any one of the supporting pillars is a capillary structure or a solid structure or a combination of capillary and solid structures.

The uniform temperature plate of the utility model has a built-in metal block in the cover plate close to the heat source, thereby accelerating the conduction of heat from the heat source, and the inner surfaces of the two cover plates of the uniform temperature plate and the support columns in the chamber can be covered with Capillary structure or tissue, the capillary structure on the inner surface of the cover plate can have different capillary pore diameters to further optimize the heat transfer effect of the vapor chamber.

Description of drawings

Fig. 1 is a three-dimensional exploded schematic diagram of a partial structure of a temperature chamber of the present invention.

Fig. 2 is a schematic cross-sectional view of part of the structure of the temperature chamber of the present invention.

Fig. 3 is a schematic cross-sectional view of another part of the vapor chamber of the present invention.

Fig. 4 is a schematic cross-sectional view of another part of the vapor chamber of the present invention.

Fig. 5 is a schematic cross-sectional view of another part of the vapor chamber of the present invention.

detailed description

For the convenience of description, the structures, structures or parts of the chambers in the diagrams of the utility model are not in accordance with the proportions when they are used, but need to be magnified in different proportions according to the description, which is not intended to limit the temperature chambers of the utility model implementation.

The metal block referred to below in the present invention refers to a continuous, solid solid structure with good thermal conductivity; preferably, copper or gold blocks are mainly made of copper or gold. Secondly, the geometric shape of the metal block depends on the shape of the vapor chamber to be placed, and one or more of its surfaces can be formed in an appropriate manner, such as etching, to form parallel or reticular grooves, or multiple A columnar protruding structure to strengthen the combination with other structures or tissues, fix or facilitate the formation of other structures or tissues.

The plate body referred to below in the utility model refers to two opposite surfaces on the appearance, and the area of the two surfaces is much larger than the side wall area between the two surfaces, which generally can be covered by two cover plates. combined. Secondly, according to the relative function, the two cover plates can be divided into the cover plate for contacting or close to the heat source and the cover plate for heat dissipation. - provided integrally, but the utility model is not limited thereto. Although the two cover plates are drawn or described as planes below, either cover plate can also be designed as an arc or other shapes as required. Furthermore, the inside of the plate body is hollow to form a hollow chamber. For convenience of description, the chamber covered by two cover plates macroscopically and between the two plate bodies is called the first chamber below. As for the hollow space inside the plate body formed by the concave-convex contour of any cover plate, it is referred to as the second chamber or the third chamber and the like below.

The capillary structure or structure referred to below in the utility model refers to a plurality of capillary pores or interconnected holes in the tissue or structure, which are generally formed by woven mesh or powder sintering or a combination of the above two, and the capillary diameter can be used or capillary density description. When the woven mesh has a looser interweaving distribution or is sintered with larger particles of powder, the capillary pore size is large and the capillary density is low; otherwise, the capillary pore size is small, and the capillary density is high. It can be understood that the capillary diameter here is obtained by statistical measurement, and can be represented by a value or a range of values, and it is not necessary that each capillary diameter is exactly the same.

Fig. 1 is a three-dimensional exploded schematic diagram of a partial structure of a temperature chamber of the present invention. Fig. 2 is a schematic cross-sectional view of part of the structure of the temperature chamber of the present invention. Fig. 3 is a schematic cross-sectional view of another part of the vapor chamber of the present invention. Please refer to FIG. 1 to FIG. 3 , the uniform temperature plate 10 includes a plate body 20 and a metal block 30 built in the plate body 20 , wherein the plate body 20 includes a first cover plate 22 and a first protruding portion 26 Two cover plates 24. In one embodiment, the first cover plate 22 and the second cover plate 24 that are relatively closed define a hollow space inside the plate body 20, represented by the first cavity 12; The inside of the protruding portion 26 forms a second cavity 14 . The geometric shape, size, position and quantity of the protrusions 26 can be determined according to requirements, and the figure is only an example for illustration. Secondly, the metal block 30 is disposed in the second chamber 14 , and the surface of the metal block 30 facing the first chamber 12 is denoted as the first surface 31 here. The metal block 30 can be combined with the protruding portion 26 of the second cover plate 24 by a suitable method, such as sintering or brazing, and fixed in the second chamber 14 .

1 to 3, when the vapor chamber 10 of the present invention is in use, the heat source 40 will generally contact the outer surface of the protrusion 26 of the second cover plate 24, so as far as the vapor chamber 10 is concerned, the second The cover plate 24 can be regarded as a heat-receiving end; in contrast, the first cover plate 22 is a heat-dissipating end. The vapor chamber 10 of the utility model has a built-in metal block 30 , and the metal block 30 close to the heat source 40 is used to accelerate the conduction of heat from the heat source 40 .

Furthermore, FIG. 4 is a schematic cross-sectional view of another part of the structure of the temperature chamber of the present invention. Referring to FIG. 2 to FIG. 4 , the capillary tissue 50 is exposed in the first chamber 12 , and is disposed on inner surfaces of the first cover plate 22 and the second cover plate 24 and on the first surface 31 of the metal block 30 . A working fluid (not shown in the figure) is provided in the first chamber 12 , and the capillary tissue 50 is in contact with the working fluid. Secondly, the capillary structure 50 includes a first capillary portion 52 with a first capillary diameter and a second capillary portion 54 with a second capillary diameter, wherein the first capillary diameter and the second capillary diameter are the same or different. In one embodiment, the first capillary portion 52 is attached and formed on the inner surface 221 of the first cover plate 22 , and the second capillary portion 54 is attached and formed on the inner surface 241 of the second cover plate 24 and the second capillary portion of the metal block 30 . On the first surface 31 , the first capillary portion 52 and the second capillary portion 54 are stacked on the inner surface 241 of the second cover plate 24 and on the first surface 31 of the metal block 30 . Secondly, the first capillary diameter is larger than the second capillary diameter, that is, the capillary density of the first capillary portion 52 is lower than that of the second capillary portion 54 .

Optionally, the first capillary portion and the second capillary portion may also be arranged adjacently and side by side on the inner surface of the plate body and on the first surface of the metal block. In one example, the second capillary portion with small capillary diameter is disposed on the first surface of the metal block, and the surrounding of the second capillary portion is the first capillary portion with large capillary diameter. Therefore, preferably, the capillary structure of the present invention includes at least two capillary portions with different capillary diameters, so that the heat transfer and vaporization rates can be optimized according to the properties of the working fluid.

Fig. 5 is a schematic cross-sectional view of another part of the vapor chamber of the present invention. Please refer to FIG. 1 to FIG. 5 , the chamber 10 further includes a support column structure 60 distributed in the first chamber 12 and abutting against between the first cover plate 22 and the second cover plate 24 . In one embodiment, the support column structure 60 includes a plurality of support columns dispersed in the first chamber 12 . Second, the plurality of support posts contact the first capillary portion 52 and the second capillary portion 54 . The support column can be solid, with a smooth or rough surface (for example, with grooves or bumps); or a capillary structure as a whole (for example, with capillary pores distributed in it); or a combination of solid and capillary structures, which can help the working fluid The gas-liquid flow and heat transfer rate. Therefore, the support column structure 60 can simultaneously support and optimize heat transfer.

It must be noted here that the above detailed description in conjunction with the drawings is only an embodiment provided to illustrate the technical content and characteristics of the present utility model. After the technical content and features of the utility model, without violating the spirit of the utility model, all kinds of simple modifications, replacements or reduction of components should fall within the scope of the claims of the utility model.

Claims (16)

1. A vapor chamber, characterized in that, comprising: A plate body, the inside of which is hollow to form a first chamber, and the plate body has a protruding portion protruding to the outside of the plate body, wherein the inside of the protruding portion forms a second chamber; a metal block disposed in the second chamber and having a first surface facing the first chamber; and Capillary tissue, exposed in the first chamber, is disposed on the inner surface of the plate body and on the first surface of the metal block. 2. The temperature chamber according to claim 1, characterized in that, the first surface of the metal block is formed with a plurality of parallel or mesh-shaped grooves or a plurality of columnar protrusion structures combined with the capillary tissue . 3. The temperature chamber according to claim 2, wherein the plurality of grooves or columnar protrusion structures are formed by etching. 4. The vapor chamber of claim 1, wherein the metal block is combined with the protruding portion by sintering or brazing, and is fixed in the second chamber. 5. The temperature chamber according to claim 1, wherein the capillary structure comprises a first capillary portion having a first capillary diameter and a second capillary portion having a second capillary diameter, the first The capillary diameter and the second capillary diameter are the same or different. 6. The temperature chamber according to claim 5, characterized in that, the first capillary part and the second capillary part are stacked or adjacently arranged on the inner surface of the plate body and the second capillary part of the metal block. On the surface. 7. The temperature chamber according to claim 6, wherein when the first capillary portion and the second capillary portion are adjacent to each other, the second capillary portion is disposed on the first surface of the metal block And the first capillary part surrounds the second capillary part and is arranged on the inner surface of the plate body, and the first capillary diameter is larger than the second capillary diameter. 8. The temperature chamber according to claim 5, wherein the plate body is covered by a first cover plate and a second cover plate having the protruding portion, and the first capillary portion is attached to the The inner surface of the first cover plate and the second capillary portion are attached to the inner surface of the second cover plate and the first surface of the metal block. 9. The temperature chamber of claim 8, wherein the first capillary diameter is larger than the second capillary diameter. 10. The temperature chamber according to claim 8, characterized in that, the temperature chamber further comprises a support distributed in the first chamber and abutted between the first cover plate and the second cover plate column structure. 11. The temperature chamber according to claim 10, characterized in that, the support column structure is a capillary structure or a solid structure or a combination of capillary structure and solid structure. 12 . The temperature chamber as claimed in claim 1 , wherein the capillary structure is a braided mesh or sintered from powder or partly braided mesh and partly sintered from powder. 13 . 13 . The vapor chamber of claim 1 , wherein the vapor chamber is further provided with a working fluid in the first chamber, and the capillary tissue is in contact with the working fluid. 14 . 14. The vapor chamber according to claim 1, wherein the metal block is made of copper or gold. 15. The temperature chamber as claimed in claim 1, further comprising a plurality of support columns distributed in the first chamber and abutting against the inner surface of the plate body. 16 . The temperature chamber according to claim 15 , wherein the plurality of support columns contact the capillary structure, and any one of the support columns is a capillary structure or a solid structure or a combination of capillary structure and solid structure.