CN217155102U

CN217155102U - Temperature equalizing plate

Info

Publication number: CN217155102U
Application number: CN202220634618.3U
Authority: CN
Inventors: 李烨; 程建华; 欧阳清平; 黄华宇; 郭华莲
Original assignee: Zhongshan Jingqing Hardware Plastic Co ltd
Current assignee: Zhongshan Jingqing Hardware Plastic Co ltd
Priority date: 2022-03-22
Filing date: 2022-03-22
Publication date: 2022-08-09
Anticipated expiration: 2032-03-22

Abstract

The utility model discloses a temperature-uniforming plate, include: the base is provided with a containing cavity with an upward opening; the cover plate is welded on the base, shields the opening of the containing cavity and defines a sealed cavity with the base; a capillary structure and a refrigerant are arranged in the sealing cavity; the fasteners penetrate through the base and the cover plate and are distributed on the periphery of the sealing cavity; the elastic piece is arranged between the fastening piece and the cover plate and used for driving the outer surface of the base to abut against the heat source. The temperature-uniforming plate of above structure is provided with a plurality of fasteners that distribute around the periphery of sealed chamber, utilizes the fastener to install the temperature-uniforming plate on treating radiating equipment, and under the effect of elastic component, the surface of base can hug closely the heat source of treating radiating equipment, avoids causing the problem that the temperature-uniforming plate can't laminate the heat source completely because factors such as production machining error or assembly error, ensures the heat exchange efficiency of temperature-uniforming plate.

Description

Temperature equalizing plate

Technical Field

The utility model relates to a heat abstractor technical field especially relates to a temperature-uniforming plate.

Background

With the increasing degree of circuit integration, the high frequency and high speed of electronic devices and the density and volume of integrated circuits tend to be miniaturized, so that the heat generation of electronic elements per unit volume and the energy consumption of a single chip are increased. Therefore, a temperature equalization plate for dissipating heat of an electronic element is provided in the prior art, and is a device capable of transferring heat of a point heat source to a large-area component for heat dissipation.

However, the surface of the conventional vapor chamber is difficult to maintain a good adhesion with the electronic component due to processing errors, deformation caused by collision during transportation, and the like, thereby affecting the heat dissipation effect.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, one of the objectives of the present invention is to provide a vapor chamber that is helpful to be closely attached to a heat source.

According to the utility model discloses temperature-uniforming plate, include: the base is provided with a containing cavity with an upward opening; the cover plate is welded on the base, shields the opening of the containing cavity and defines a sealed cavity with the base; a capillary structure and a refrigerant are arranged in the sealing cavity; the fasteners penetrate through the base and the cover plate and are distributed on the periphery of the sealing cavity; the elastic piece is arranged between the fastening piece and the cover plate and used for driving the outer surface of the base to abut against the heat source.

According to the utility model discloses temperature-uniforming plate has following beneficial effect at least:

the temperature-uniforming plate of above structure is provided with a plurality of fasteners that distribute around the periphery of sealed chamber, utilizes the fastener to install the temperature-uniforming plate on treating radiating equipment, and under the effect of elastic component, the surface of base can hug closely the heat source of treating radiating equipment, avoids causing the problem that the temperature-uniforming plate can't laminate the heat source completely because factors such as production machining error or assembly error, ensures the heat exchange efficiency of temperature-uniforming plate.

The utility model discloses an in some embodiments, the base with be equipped with the punching press connecting portion between the apron, the punching press connecting portion be located within the profile border of sealed chamber and with the sealed chamber is isolated, be equipped with the installation perforation on the punching press connecting portion, the fastener is for wearing to locate the fenestrate bolt of installation, the elastic component is for wearing to locate the spring of bolt, the both ends of spring respectively the butt in the head of bolt with the apron.

In some embodiments of the present invention, the inner surface of the base is stamped outward to form a boss portion, and a surface of the boss portion constitutes a first heat exchange surface attached to the heat source.

In some embodiments of the present invention, the first heat transfer surface and the outer surface of the cover plate are both provided with graphene layers.

In some embodiments of the present invention, the inner surface of the cover plate has a plurality of support pillars extending downward, and at least some of the support pillars can abut against the bottom wall of the cavity.

In some embodiments of the present invention, the capillary structure is a metal mesh layer, and the lower end of the supporting pillar fixes the metal mesh layer to the bottom wall of the cavity.

In some embodiments of the present invention, the capillary structure is a metal mesh layer, the metal mesh layer is provided with a through hole for the support pillar to penetrate through, and the inner wall of the through hole is tightly fitted to the outer peripheral wall of the support pillar.

In some embodiments of the present invention, the support pillar is in the shape of a circular truncated cone with a large top and a small bottom.

In some embodiments of the present invention, the edge of the metal mesh layer is sandwiched between the edge of the cover plate and the edge of the base.

In some embodiments of the present invention, the base and the cover plate are provided with a pipeline between them, the pipeline being communicated with the sealed cavity, and the end of the pipeline being provided with a sealed plug.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic cross-sectional view of one embodiment of a vapor chamber of the present invention;

fig. 2 is a schematic structural view of the embodiment of fig. 1 with the fastener, the elastic member, and the graphene layer removed.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the orientation description, such as the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., is the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplicity of description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and 2, the utility model discloses a vapor chamber, include: the base 100 is provided with a cavity with an upward opening; the cover plate 200 is welded on the base 100, shields the opening of the cavity and defines a sealed cavity 101 with the base 100; a capillary structure 300 and a refrigerant are arranged in the sealed cavity 101; a plurality of fasteners 400 penetrating the base 100 and the cover plate 200 and distributed around the periphery of the sealing chamber 101; and the elastic member 500 is arranged between the fastening member 400 and the cover plate 200 and is used for driving the outer surface of the base 100 to abut against the heat source.

The temperature-uniforming plate of above structure is provided with a plurality of fasteners 400 that distribute around the periphery of seal chamber 101, utilizes fastener 400 to install the temperature-uniforming plate on treating radiating equipment, and under the effect of elastic component 500, the heat source of treating radiating equipment can be hugged closely to the surface of base 100, avoids causing the problem that the temperature-uniforming plate can't laminate the heat source completely because factors such as production machining error or assembly error, ensures the heat exchange efficiency of temperature-uniforming plate.

Referring to fig. 1 and 2, in some embodiments of the present invention, a stamping connection portion 600 is disposed between the base 100 and the cover plate 200, the stamping connection portion 600 is located within the contour edge of the sealed cavity 101 and isolated from the sealed cavity 101, an installation perforation 610 is disposed on the stamping connection portion 600, the fastener 400 is a bolt penetrating the installation perforation 610, the elastic member 500 is a spring penetrating the bolt, and two ends of the spring respectively abut against the head of the bolt and the cover plate 200. The overall size of the temperature equalization plate can be prevented from being increased by the arrangement position of the stamping connection part 600, so that the effect of compact structure is achieved. The number of the installation through holes 610 is four, and the four installation through holes 610 are distributed in a rectangular shape. It should be noted that the fastener 400 is a bolt, and correspondingly, a threaded hole matched with the bolt is formed in a corresponding position of the device to be cooled, and after the bolt is screwed in the threaded hole, the temperature-uniforming plate can adjust the placing angle of the temperature-uniforming plate to be attached to a heat source on the device under the action of the spring.

Referring to fig. 1 and 2, in some embodiments of the present invention, for a case where a contact area of a heat source to be dissipated is small, an inner surface of the base 100 is punched outwards to form a boss portion 110, and a surface of the boss portion 110 constitutes a first heat exchange surface to be attached to the heat source. Since the area of the outer surface of the base 100 is large, it is difficult to maintain flatness with high accuracy, and the boss portion 110 is provided to be in good contact with a heat source having a small contact area.

Referring to fig. 1, in some embodiments of the present invention, in order to further improve the heat exchange efficiency, the first heat exchange surface and the outer surface of the cover plate 200 are both provided with graphene layers 900.

Referring to fig. 1, in some embodiments of the present invention, the inner surface of the cover plate 200 is discretely distributed with a plurality of downwardly extending support pillars 700, and at least a portion of the support pillars 700 can abut against the bottom wall of the cavity. The support column 700 effectively improves the mechanical strength of the temperature equalizing plate, and prevents the cover plate 200 and the base 100 from collapsing.

Referring to fig. 1, in some embodiments of the present invention, the capillary structure 300 is a metal mesh layer, and the lower end of the support column 700 holds the metal mesh layer against the bottom wall of the cavity. The metal mesh layer is positioned by skillfully utilizing the supporting columns 700 through the structure, and the metal mesh layer is fixed without adding parts.

In some embodiments of the present invention, the capillary structure 300 is a metal mesh layer, the metal mesh layer is provided with a through hole for the support column 700 to pass through, and the inner wall of the through hole is tightly fitted with the outer peripheral wall of the support column 700. Through the structure, the metal mesh layer can be positioned and fixed, the metal mesh layer is prevented from moving relative to the sealing cavity 101, and the working stability of the temperature equalizing plate is further ensured.

Referring to fig. 1, in some embodiments of the present invention, the supporting column 700 is in the shape of a circular truncated cone with a large top and a small bottom. It can be understood that the refrigerant in the sealed cavity 101 is heated and then gasified and diffused to the inner surface of the cover plate 200, the outer surface of the cover plate 200 is cooled by air cooling or other cooling methods, at this time, the gaseous refrigerant is liquefied into liquid, and the liquid refrigerant can rapidly flow back to the capillary structure 300 along the circular truncated cone-shaped supporting column 700 with a large top and a small bottom.

In some embodiments of the present invention, to further fix the metal mesh layer, the edge of the metal mesh layer is sandwiched between the edge of the cover plate 200 and the edge of the base 100.

Referring to fig. 2, in some embodiments of the present invention, a pipeline 800 communicated with the sealed cavity 101 is sandwiched between the base 100 and the cover plate 200, and a sealed plug is disposed at an end of the pipeline 800. The pipeline 800 is used for injecting a refrigerant after vacuumizing the sealed cavity 101, and the sealing plug is composed of a solder welded at the end of the pipeline 800, so that the sealing performance of the sealed cavity 101 inside the temperature-uniforming plate is ensured.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vapor chamber, comprising:

the base (100) is provided with a cavity with an upward opening;

the cover plate (200) is welded on the base (100), shields the opening of the containing cavity and defines a sealed cavity (101) with the base (100);

a capillary structure (300) and a refrigerant are arranged in the sealed cavity (101);

the fasteners (400) are arranged on the base (100) and the cover plate (200) in a penetrating mode and distributed on the periphery of the sealing cavity (101);

the elastic piece (500) is arranged between the fastener (400) and the cover plate (200) and is used for driving the outer surface of the base (100) to abut against a heat source.

2. A vapor chamber according to claim 1, wherein:

the base (100) with be equipped with punching press connecting portion (600) between apron (200), punching press connecting portion (600) are located within the profile border of sealed chamber (101) and with sealed chamber (101) are isolated, be equipped with installation perforation (610) on punching press connecting portion (600), fastener (400) are for wearing to locate the bolt of installation perforation (610), elastic component (500) are for wearing to locate the spring of bolt, the both ends of spring respectively the butt in the head of bolt with apron (200).

3. A vapor chamber according to claim 1, wherein:

the inner surface of the base (100) is punched outwards to form a boss part (110), and the surface of the boss part (110) forms a first heat exchange surface attached to a heat source.

4. A vapor chamber according to claim 3, wherein:

the first heat exchange surface and the outer surface of the cover plate (200) are both provided with graphene layers (900).

5. A vapor chamber according to claim 1, wherein:

a plurality of support columns (700) extending downwards are distributed on the inner surface of the cover plate (200) in a discrete mode, and at least part of the support columns (700) can abut against the bottom wall of the cavity.

6. A vapor chamber according to claim 5, wherein:

the capillary structure (300) is a metal mesh layer, and the metal mesh layer is abutted and fixed on the bottom wall of the containing cavity by the lower end of the supporting column (700).

7. A vapor chamber as defined in claim 5, wherein:

the capillary structure (300) is a metal mesh layer, a through hole for the support column (700) to penetrate through is formed in the metal mesh layer, and the inner wall of the through hole is tightly matched with the outer peripheral wall of the support column (700).

8. A vapor chamber according to claim 6 or 7, wherein:

the supporting column (700) is in a circular truncated cone shape with a large upper part and a small lower part.

9. A vapor chamber according to claim 6 or 7, wherein:

the edge of the metal mesh layer is clamped between the edge of the cover plate (200) and the edge of the base (100).

10. A vapor chamber according to claim 1, wherein:

a pipeline (800) communicated with the sealed cavity (101) is clamped between the base (100) and the cover plate (200), and a sealed plug is arranged at the end of the pipeline (800).