CN217275767U

CN217275767U - Lower cover of vapor chamber with micro-guide capillary structure

Info

Publication number: CN217275767U
Application number: CN202220273027.8U
Authority: CN
Inventors: 丁幸强; 李凯凯; 谢毅
Original assignee: Shengzhou Tianmai Heat Conduction Technology Co ltd
Current assignee: Shengzhou Tianmai Heat Conduction Technology Co ltd
Priority date: 2022-02-10
Filing date: 2022-02-10
Publication date: 2022-08-23
Anticipated expiration: 2032-02-10

Abstract

The utility model discloses a lower cover of a vapor chamber with a micro guide capillary structure, belonging to the technical field of vapor chambers; the heat source device comprises a lower cover body, wherein a cavity is arranged on the lower cover body, a heat source area is arranged at the upper part of the cavity, a guide capillary structure is fixedly arranged on the bottom surface of the cavity and comprises a first capillary structure and a second capillary structure, the first capillary structure is arranged at the upper end of the cavity, the second capillary structure is arranged in the area of the bottom surface of the cavity except the upper end, the first capillary structure is transversely arranged, the arrangement direction of the second capillary structure is intersected with the arrangement direction of the first capillary structure, and the heat source area comprises the first capillary structure and the second capillary structure; the utility model discloses a set up miniature direction capillary structure at the soaking plate lower cover, improve the backward flow rate of condensation working medium, and then improve the double-phase circulation efficiency of soaking plate.

Description

Vapor chamber lower cover with micro-guiding capillary structure

Technical Field

The utility model relates to a vapor chamber lower cover especially relates to a vapor chamber lower cover with miniature direction capillary structure, belongs to vapor chamber technical field.

Background

With the overall spread of the 5G industry, the heat flux density of intelligent portable electronic devices is higher and higher. The existing portable electronic products generally use a vapor chamber with the thickness of 0.4mm or more. In order to meet the heat dissipation requirements of electronic products with smaller and smaller sizes and thinner thicknesses, the development of a soaking plate with an ultrathin thickness is urgently needed to solve the problem of local high heat flow heat dissipation of microelectronic devices in a limited space.

In the prior art, soaking plates based on the foam copper are only suitable for soaking plates with regular shapes, and the heat source is in the symmetric center. For the use situation that the heat source is not in the center of the structure and is in an irregular shape, a particularly applicable structural scheme is not provided; especially, under the condition that the thickness of the liquid absorbing core is extremely limited, the sufficient capillary channels in the vapor chamber cannot be guaranteed to provide quick reflux acting force for the liquid-phase working medium, the performance of the vapor chamber is poor, and the capillary driving force needs to be further enhanced for enabling the condensed working medium to rapidly reflux.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a lower cover of a vapor chamber with a micro guide capillary structure.

The utility model adopts the technical proposal that: the design is a lower cover of the vapor chamber plate with a micro guide capillary structure, which comprises a lower cover body of the vapor chamber plate, wherein a cavity is arranged on the lower cover body, the cavity and the cavity on the upper cover body of the vapor chamber plate are combined into a vacuum chamber of the vapor chamber plate, the middle position of the upper part of the cavity is a heat source area, the bottom surface of the cavity is fixedly provided with the guide capillary structure, the guide capillary structure comprises a first capillary structure and a second capillary structure, the first capillary structure is arranged at the upper end of the cavity, the area of the bottom surface of the cavity except the upper end is provided with the second capillary structure, the first capillary structure is transversely arranged, the arrangement direction of the second capillary structure is crossed with the arrangement direction of the first capillary structure, the heat source area comprises the first capillary structure and the second capillary structure, and the working medium after the condensation end of the vapor chamber plate is condensed is conveyed back to the heat source area (heat absorption end) through the second capillary structure, the first capillary structure transversely disperses the liquid-phase working medium, quickly evaporates and absorbs heat, and simultaneously communicates the liquid-phase working medium on the left side and the right side of the upper part of the lower cover body with the middle position of the upper part of the lower cover body, so that the quick and sufficient heat absorption of the middle position is ensured, the dry burning is prevented, and the soaking plate is protected.

Further, the second capillary structure is longitudinally arranged on the bottom surface of the cavity.

Further, second capillary structure can also set up to including vertical part and arc portion, the vertical part sets up along cavity length direction level, and the one end that the vertical part is close to the hot source district is the toper setting, and the toper both sides are the arc structure, vertical part left and right sides symmetry sets up arc portion, and because the hot source district is close to the position temperature in the middle of more high more concentrated more, concentrates the middle part of carrying to the hot source district again with the condensing working medium as far as possible and disperses, improves the soaking plate performance.

Furthermore, the vertical part and the arc-shaped part form a second capillary structure in a rectangular shape to form an up-and-down conveying structure, the working medium is quickly conveyed in a backflow mode after being condensed, and the circulation efficiency and the heat dissipation efficiency of the soaking plate are improved.

Furthermore, the upper half area of the heat source area is covered by the first capillary structure, and the lower half area of the heat source area is covered by the second capillary structure, so that the rapid heat dissipation of the heat source area is ensured.

Furthermore, the height of the first capillary structure and the height of the second capillary structure do not exceed the depth of the cavity, and the height of the micro guide capillary structure can be set according to needs to adapt to different requirements.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses to the irregular shape of soaking pit and the heat source not at the use sight at structure center, the internal surface of lid sets up miniature direction capillary structure under the soaking pit, under the very limited condition of thickness at the imbibition core, has sufficient capillary passage to provide quick backward flow effort for liquid phase working medium in the assurance soaking pit, makes the condensation working medium can flow back rapidly.

The utility model can solve the problem of insufficient capillary force, save materials (no wick can be selected), and further realize the ultra-thinness of the soaking plate; the miniature guide capillary structure can also improve the strength of the whole structure, the gap between the upper shell and the lower shell is increased, airflow between the upper shell and the lower shell can pass through quickly, the airflow flowing speed between the upper shell and the lower shell is increased, and the soaking effect is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of the structure 1 of the present invention.

Fig. 2 is a partially enlarged schematic view of fig. 1.

Fig. 3 is a schematic side view of the first capillary structure of fig. 1.

Fig. 4 is a schematic view of the structure 2 of the present invention.

Fig. 5 is a partially enlarged view of fig. 4.

In the figure: 1-lower cover body, 2-cavity, 3-heat source region, 4-first capillary structure, 5-second capillary structure, 51-vertical part and 52-arc part.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be construed broadly and include, for example, fixed connections, detachable connections, or integral connections; 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.

In addition, in the description of the present invention, unless otherwise specified, the terms "plurality", and "plural groups" mean two or more, and the terms "a plurality", and "a plurality" mean one or more. In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are used, they are only used for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention, if the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are the directions or positional relationships shown in the drawings. Furthermore, the terms "first," "second," and "third" if used herein are for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1

As shown in fig. 1-5: the utility model provides a soaking board lower cover with miniature direction capillary structure, includes lower lid 1, be provided with cavity 2 on the lid 1 down, 2 upper portions of cavity are

heat source district

3, 2 fixed direction capillary structures that are provided with in bottom surface of cavity, direction capillary structure includes first capillary structure 4 and second capillary structure 5, first capillary structure 4 sets up in cavity 2 upper end, 2 bottom surfaces of cavity except that the region of upper end sets up second capillary structure 5, first capillary structure 4 transversely sets up, second capillary structure 5 arranges the orientation and intersects with first capillary structure 4 arrangement direction, contain first capillary structure 4 and second capillary structure 5 in the heat source district 3. The second capillary structure 5 is longitudinally arranged on the bottom surface of the cavity 2.

The second capillary structure 5 can also be set to be a structural form comprising a vertical part 51 and an arc-shaped part 52, the vertical part 51 is horizontally arranged along the length direction of the cavity 2, one end of the vertical part 51 close to the heat source area 3 is in a conical arrangement, the two sides of the conical structure are in arc-shaped structures, and the arc-shaped parts 52 are symmetrically arranged at the left side and the right side of the vertical part 51. The vertical portion 51 and the arc portion 52 constitute the second capillary structure 5 of a rectangular shape.

The upper half area of the heat source region 3 is covered by the first capillary structure 4, and the lower half area of the heat source region 3 is covered by the second capillary structure 5. The heights of the first capillary structure 4 and the second capillary structure 5 do not exceed the depth of the cavity 2.

While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. Vapor chamber lower cover with miniature direction capillary structure, including lower lid (1), be provided with cavity (2), its characterized in that on lower lid (1): cavity (2) upper portion is heat source district (3), cavity (2) bottom surface is fixed to be provided with direction capillary structure, direction capillary structure includes first capillary structure (4) and second capillary structure (5), first capillary structure (4) set up in cavity (2) upper end, cavity (2) bottom surface sets up second capillary structure (5) except that the region of upper end, first capillary structure (4) transversely set up, second capillary structure (5) arrange the direction and intersect with first capillary structure (4) arrangement direction, contain first capillary structure (4) and second capillary structure (5) in heat source district (3).

2. A lower cover of a soaking plate with a micro-oriented capillary structure according to claim 1, characterized in that: the second capillary structure (5) is longitudinally arranged on the bottom surface of the cavity (2).

3. A lower cover of a soaking plate with a micro-oriented capillary structure according to claim 1, characterized in that: second capillary structure (5) include vertical part (51) and arc portion (52), vertical part (51) set up along cavity (2) length direction level, and vertical part (51) are close to the one end in heat source district (3) and are the toper setting, and the toper both sides are the arc structure, vertical part (51) left and right sides symmetry sets up arc portion (52).

4. A lower cover of a vapor chamber with a micro-oriented capillary structure according to claim 3, wherein: the vertical portion (51) and the arc portion (52) constitute a second capillary structure (5) of a rectangular shape.

5. A soaking plate lower cover with a micro-oriented capillary structure according to any one of claims 1 to 4, wherein: the upper half area of the heat source area (3) is covered by a first capillary structure (4), and the lower half area of the heat source area (3) is covered by a second capillary structure (5).

6. A lower cover of a soaking plate with a micro-oriented capillary structure according to claim 1, characterized in that: the heights of the first capillary structure (4) and the second capillary structure (5) do not exceed the depth of the cavity (2).