CN216523312U

CN216523312U - Strengthening structure of temperature equalizing plate

Info

Publication number: CN216523312U
Application number: CN202122807894.3U
Authority: CN
Inventors: 熊惜文; 肖书旺; 吕星星
Original assignee: Asia Vital Components Shenzhen Co Ltd
Current assignee: Asia Vital Components Shenzhen Co Ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-05-13
Anticipated expiration: 2031-11-16

Abstract

The utility model provides a temperature equalization plate strengthening structure, comprising: an upper cover, a lower plate; the upper cover is provided with a first side and a second side, the first side is concavely provided with at least one groove towards the second side, and the other side opposite to the groove convexly extends to form at least one convex body; the lower plate is provided with a third side provided with a first capillary structure and a fourth side contacted with a heat source, the lower plate and the upper cover are correspondingly covered to form an airtight cavity, and a working fluid is filled in the airtight cavity.

Description

Strengthening structure of temperature equalizing plate

Technical Field

The present invention relates to a reinforced structure of a vapor chamber, and more particularly, to a reinforced structure of a vapor chamber capable of providing direct bonding of heat dissipation or heat conduction elements and enhancing the strength of the entire structure.

Background

The heat pipe and the vapor chamber are both a common heat conduction element utilizing two-phase flow change, wherein the heat pipe mainly provides a far-end horizontal heat conduction, and the vapor chamber provides a vertical heat conduction from surface to surface.

In order to obtain both horizontal heat conduction (heat pipe 6) and vertical heat conduction (vapor chamber 7), the manufacturers try to combine the heat pipe 6 and the vapor chamber 7, and hopefully obtain both horizontal and vertical heat conduction to improve the heat conduction efficiency.

However, the temperature-equalizing plate 7 is made of copper material for obtaining better heat transfer characteristics, so the structure strength is poor due to soft texture, therefore, the heat pipe 6 and the temperature-equalizing plate 7 cannot be directly combined in the traditional combination of the heat pipe 6 and the temperature-equalizing plate 7, the direct combination can cause the deformation or the rupture of the temperature-equalizing plate 7 or the heat pipe 6, in addition, the combination part of the temperature-equalizing plate 7 and the heat pipe 6 can not be combined by welding, high heat can be generated due to welding, the high heat can cause the two-phase flow structure in the heat pipe 6 and the temperature-equalizing plate 7 to be damaged, for example, working liquid is burnt out or a capillary structure is separated, and further the temperature-equalizing plate and the heat pipe are damaged; therefore, the solution adopted by the prior art is to combine and fix a base 8 and the heat pipe 6, and then combine the base 8 and the vapor chamber 7, so as to achieve the purpose of combining the vapor chamber 7 and the heat pipe 6.

However, when the heat pipe 6 is combined with the base 8, because the heat pipe 6 has many different shapes, such as circular pipe, D-shaped pipe, flat pipe, etc., referring to fig. 1, the heat pipe 6 is fixed on the upper surface (horizontal surface) of the base 8 by welding the heat pipe 6 with a circular shape, and because the heat pipe 6 is in a circular pipe shape, the contact portion between the heat pipe 6 and the base 8 is only a line or point contact, the thermal contact area is very small, and the combination strength of the two is not good except that the heat conduction efficiency is not good.

Therefore, in order to increase the thermal contact area between the heat pipe 6 and the base 8, a D-shaped pipe or a flat pipe having at least one flat surface is additionally selected instead of the circular pipe to be assembled with the base 8, although the thermal contact area between the heat pipe 6 and the base 8 is increased. However, in order to form the heat pipe 6 in a D-shape and a flat shape having a large thermal contact area with the base 8, it is necessary to mold the heat pipe 6 by an external force so as to obtain a flat surface.

However, another problem is derived from the above, that in the process of molding the heat pipe 6, the heat pipe 6 is easily deformed by squeezing the pipe wall, so as to destroy the capillary structure of the sintered powder sintered on the inner wall surface of the heat pipe 6, and to reduce the internal vapor passage, thereby causing the internal capillary structure of the heat pipe 6 to be damaged, and reducing or losing the two-phase flow heat conduction efficiency of the heat pipe 6.

Referring to fig. 2, in order to improve the defects of the prior art, an arc-shaped groove 81 conforming to the shape of the circular heat pipe 6 is formed on the base 8 for the circular heat pipe 6, which solves the problems of insufficient thermal contact area between the heat pipe 6 and the base 8 and the damage of the heat pipe 6 during molding.

In fact, in the prior art, the heat pipe 6 and the vapor chamber 7 cannot be directly combined, but the heat pipe 6 and the vapor chamber 7 can be combined only by additionally providing the base 8, and the base 8 is additionally provided between the heat pipe 6 and the vapor chamber 7, so that an indirect heat conduction structure is formed between the heat pipe 6 and the vapor chamber 7, rather than a direct heat conduction effect, the vapor chamber 7 cannot directly conduct the absorbed heat to the heat pipe 6, which greatly reduces the heat conduction efficiency, and thermal resistance is easily generated at the joint of the base 8 and the heat pipe 6 and the joint of the base 8 and the vapor chamber 7, so that the additionally provided base 8 not only reduces the heat conduction efficiency, but also increases the thickness of additional components and the whole volume, and increases the manufacturing material cost.

Therefore, how to provide a uniform temperature plate structure which can directly and correspondingly combine the heat pipe 6 and the uniform temperature plate 7 without additionally arranging the base 8 and simultaneously does not generate thermal resistance, can improve the whole structure strength of the uniform temperature plate 7, increase the internal condensation area of the uniform temperature plate 7 and reduce the manufacturing cost is the first important goal of people in the field.

SUMMERY OF THE UTILITY MODEL

Therefore, to effectively solve the above problems, the main objective of the present invention is to provide a temperature-equalizing plate reinforcing structure that can increase the structural strength of the temperature-equalizing plate and can be directly combined with a heat pipe without additional casing (element).

To achieve the above object, the present invention provides a strengthening structure of a vapor chamber, comprising:

the upper cover is provided with a first side and a second side, the first side is concavely provided with at least one groove towards the second side, and the groove convexly extends towards the second side to form at least one convex body;

the upper cover and the lower cover are correspondingly covered to form an airtight chamber, and the airtight chamber is filled with working fluid.

The temperature equalization plate strengthens the structure, wherein: the second capillary structure is arranged on the surface of the convex body of the upper cover.

The temperature equalization plate strengthens the structure, wherein: the third side extends a plurality of supporting columns which are propped against the second side of the upper cover or the plurality of convex bodies, and the first capillary structure part extends to the surfaces of the plurality of supporting columns.

The temperature equalization plate strengthens the structure, wherein: the upper cover is provided with a first side edge and a second side edge, one end of the groove is connected with the first side edge, and the other end of the groove is connected with the second side edge.

The temperature equalization plate strengthens the structure, wherein: the convex body and the groove are arranged correspondingly or in a staggered way.

The temperature equalization plate strengthens the structure, wherein: the convex body is in the shape of a convex strip, a convex ring or a convex cross.

The design of the groove and the convex body at the other side of the upper cover of the temperature equalizing plate reinforcing structure can ensure that the temperature equalizing plate can be directly combined with a common circular or arc-shaped heat pipe without an additional combination element or a buckle, and because the convex body is arranged at any one of the corresponding or staggered positions at the other side of the groove, the groove provides a larger thermal contact surface for a heat transfer element (heat pipe), the integral structural strength of the temperature equalizing plate can be greatly increased through the convex body, the internal condensation area is also increased, the damage such as deformation and the like during the combination of the temperature equalizing plate can be prevented, and the internal vapor-liquid circulation efficiency can be further improved.

Drawings

FIG. 1 is a schematic diagram of a conventional heat dissipation module;

FIG. 2 is a schematic diagram of a conventional heat dissipation module;

FIG. 3 is an exploded perspective view of a first embodiment of a vapor chamber reinforcing structure according to the present invention;

FIG. 4 is a sectional view of the first embodiment of the vapor chamber plate reinforcing structure according to the present invention;

FIG. 5 is a sectional view of the first embodiment of the vapor chamber plate reinforcing structure according to the present invention;

FIG. 6 is a sectional view of a second embodiment of the vapor chamber strengthening structure of the present invention.

Description of reference numerals: an upper cover 11; a first side 111; a second side 112; a recess 113; the convex body 114; a first side 115; a second side edge 116; a lower plate 12; a third side 121; a fourth side 122; a support post 123; a gas-tight chamber 13; a working fluid 2; a first capillary structure 3; a second capillary structure 4; a heat pipe 5; a heat pipe 6; a temperature equalizing plate 7; a base 8; the groove 81.

Detailed Description

The above objects, together with the structural and functional features thereof, are accomplished by the preferred embodiments according to the accompanying drawings.

Referring to fig. 3, fig. 4 and fig. 5, the present invention is a three-dimensional exploded and assembled cross-sectional view of a temperature-uniforming plate reinforcing structure, as shown in the drawings, the temperature-uniforming plate reinforcing structure of the present invention includes: an upper cover 11, a lower plate 12;

the upper cover 11 has a first side 111 and a second side 112, the first and

second sides

111, 112 are respectively disposed on the upper and lower sides of the upper cover 11, and are also the outer side and the inner side of the upper cover 11, the first side 111 is recessed toward the second side 112 to form at least one groove 113, the groove 113 can be a structure (made) by applying plastic deformation or other machining to the first side 111 through an external force, and the other side opposite to the groove 113 is protruded to form at least one protrusion 114, the protrusion 114 can be a structure (made) protruded by the plastic deformation of the first side 111 through an external force or other machining (casting, milling, pinning, cutting, planing), etc., the protrusion 114 can be selected to be disposed or dislocated with respect to the groove 113, the groove 113 of the present embodiment is selected to be formed by stamping, pressing, forging, or indenting, etc., so that the other side can be formed correspondingly to form the protrusion 114, therefore, the two are disposed correspondingly, as shown in fig. 4, the two grooves 113 and the protrusions 114 can also be disposed in a staggered manner as shown in fig. 5, and the protrusions 114 provide structural strength improvement to the upper cover 11 and can increase the condensation area of the second side 112.

Of course, the protrusion 114 and the groove 113 may be disposed by a mechanical processing method in a staggered manner to form the protrusion 114, and the shape of the protrusion 114 is a protrusion strip or a protrusion ring or a protrusion cross or a protrusion with a segment or a continuous portion.

The upper lid 11 has a first side 115 and a second side 116, and one end of the groove 113 is connected to the first side 115 and the other end is connected to the second side 116, i.e. the first side 115 penetrates the second side 116.

The grooves 113 may extend along the transverse direction (as shown in fig. 3 and 4) or the longitudinal direction of the upper cover 11, or along both the transverse direction and the longitudinal direction, and the grooves 113 are connected to each other in a staggered manner, the longitudinal direction of the upper cover 11 is parallel to the first side 115, and the transverse direction is perpendicular to the first side 115.

The lower plate 12 has a third side 121 and a fourth side 122, and covers the upper cover 11 to form an airtight chamber 13, the airtight chamber 13 is filled with a working fluid 2, and the third side 121 is provided with a first capillary structure 3.

The groove 113 formed on the first side 111 of the upper cover 11 is mainly used as a portion for accommodating other heat dissipation or heat conduction elements, such as a heat pipe 5, and the shape of the groove 113 can be set according to the shape of the correspondingly assembled heat conduction element, so that the heat conduction element can be easily assembled with the groove 113 without other fixing elements or bases, thereby not only saving the manufacturing cost, but also preventing the thermal resistance phenomenon caused by the non-close adhesion or the interval arrangement between the uniform temperature plate and the heat conduction element; the heat pipe 5 is taken as an illustrative embodiment of the heat conducting element of the present embodiment but not limited thereto, the groove 113 disposed on the upper cover 11 of the present invention may be disposed corresponding to the shape of the heat pipe 5 to be disposed, the circular heat pipe 5 is directly disposed in the groove 113 and assembled with the upper cover 11, and the heat pipe 5 is not fixed by an additional base, and the heat pipe 5 and the upper cover 11 may be combined without welding, so as to save material cost, and prevent the thermal resistance phenomenon generated by the combination of too many components, and the maximum contact area between the heat pipe 5 and the groove 113 is helpful to improve the heat conduction efficiency between the heat pipe 5 and the groove 113, and the heat pipe 5 maintains the maximum volume of the vapor channel, and the two-phase flow circulation is better than that of the heat pipe 5 of other shapes.

Therefore, the temperature-uniforming plate can be directly combined with a common circular or arc-shaped heat pipe by the temperature-uniforming plate reinforcing structure without additional combination elements or buckles, and the structure of the convex body 114 is formed at the other side of the groove 113 in a corresponding or staggered mode, so that the overall structural strength and the condensation contact area of the temperature-uniforming plate can be increased, the damage such as deformation and the like during the combination of the temperature-uniforming plate can be prevented, the conversion efficiency of two-phase flow in the temperature-uniforming plate can be increased, and the heat conduction effect can be improved.

Referring to fig. 6, a combined cross-sectional view of a second embodiment of the temperature-uniforming plate reinforcing structure of the present invention is shown, and as shown in the figure, part of the structure of this embodiment is the same as that of the first embodiment, and therefore will not be described herein again, but the difference between this embodiment and the first embodiment is that a second capillary structure 4 is further provided at the convex body 114 of the upper cover 11, and the second capillary structure 4 is flatly disposed on the surface of the convex body 114 of the upper cover 11.

And a plurality of supporting pillars 123 extend from the third side 121 of the lower plate 12, the supporting pillars 123 abut against the second side 112 of the upper cover 11 or the protrusions 114, and a portion of the first capillary structure 3 extends on the surface of the supporting pillars 123, and a portion of the first capillary structure 3 is connected to the second capillary structure 4.

The utility model mainly aims to provide a temperature-uniforming plate structure which can increase the structural strength and can be directly combined and assembled with a heat pipe or other heat dissipation or heat conduction elements, one side of the temperature-uniforming plate is pressed by external force to enable the upper cover to generate plastic deformation to form a groove, the groove directly accommodates the heat dissipation or heat conduction elements which are assembled correspondingly, and the other side surface of the groove is correspondingly or misplaced to form a convex body, so that the structural strength of the temperature-uniforming plate is increased, the contact area of condensation is increased, the condensation area is increased, the efficiency of vapor-liquid circulation is improved, the defect that the traditional temperature-uniforming plate cannot be directly assembled with the heat dissipation or heat conduction elements without flat surfaces is overcome, and the structural strength of the temperature-uniforming plate and the efficiency of vapor-liquid circulation are improved.

Claims

1. A vapor chamber reinforcing structure, comprising:

2. The vapor chamber plate reinforcing structure according to claim 1, wherein: the second capillary structure is arranged on the surface of the convex body of the upper cover.

3. The vapor chamber plate reinforcing structure according to claim 1, wherein: the third side extends a plurality of supporting columns which are propped against the second side of the upper cover or the plurality of convex bodies, and the first capillary structure part extends to the surfaces of the plurality of supporting columns.

4. The vapor chamber plate reinforcing structure according to claim 1, wherein: the upper cover is provided with a first side edge and a second side edge, one end of the groove is connected with the first side edge, and the other end of the groove is connected with the second side edge.

5. The vapor chamber plate reinforcing structure according to claim 1, wherein: the convex body and the groove are arranged correspondingly or in a staggered way.

6. The vapor chamber plate reinforcing structure according to claim 1, wherein: the convex body is in the shape of a convex strip, a convex ring or a convex cross.