3D uniform temperature plate

Abstract

The utility model discloses a 3D even temperature plate, including upper casing, lower casing, heat pipe, upper casing is sealedly connected with lower casing, and the evaporation cavity is formed between upper casing and lower casing, and the through hole corresponding with heat pipe is equipped on upper casing, and heat pipe is installed on upper casing through the through hole, and heat pipe top end is closed, and heat pipe bottom end is open, and the support piece for supporting heat pipe is equipped below the through hole on lower casing, and the limiting step for limiting the outer circle position of heat pipe is equipped on support piece top portion. The utility model discloses support piece and limiting step make heat pipe accurate positioning, and the perpendicular assembly of heat pipe is convenient, guarantees capillary lap joint, the utility model discloses heat pipe can accurate positioning, and the subsequent cooperation assembly with fin is convenient, the utility model discloses working medium reflux is smooth, and the product heat dissipation performance has been improved.

Description

Technical Field

[0001] This utility model relates to the field of radiator technology, and in particular to a 3D heat exchanger plate. Background Technology

[0002] With technological advancements, market demands for electronic devices are gradually increasing, leading to higher power consumption in product chips and consequently, more stringent requirements for heat dissipation. Conventional heat pipes and vapor chambers are no longer sufficient to meet the demands of high-power applications, and the use of 3D vapor chambers in high-power scenarios is continuously expanding.

[0003] A 3D vapor chamber typically consists of a vapor chamber and multiple heat pipes. The vapor chamber has openings on one or more sides, connecting to the open side of a heat pipe that is closed at one end and open at the other, forming a 3D sealed cavity (i.e., an evaporation chamber). This vapor chamber allows heat to be directly conducted to the heat pipes connected to the cooling fins, significantly improving heat transfer efficiency and enhancing radiator performance.

[0004] Currently, the overlap between heat pipes and vapor chambers is mainly an ineffective positioning connection between the narrow end face of the heat pipe and the large flat surface of the vapor chamber. The heat pipe is prone to tilting, which affects the effective overlap area between it and the vapor chamber, resulting in poor refrigerant reflux and affecting product performance. Utility Model Content

[0005] The technical problem to be solved by this utility model embodiment is to provide a 3D heat spreader to facilitate the positioning and connection of heat pipes.

[0006] To address the aforementioned technical problems, this utility model proposes a 3D heat spreader, comprising an upper shell, a lower shell, and a heat pipe. The upper shell and the lower shell are sealed together, forming an evaporation chamber between them. The upper shell has a through hole corresponding to the heat pipe, through which the heat pipe passes and is installed on the upper shell. The top end of the heat pipe is closed, while the bottom end is open. Below the corresponding through hole on the lower shell, a support member is provided for supporting the heat pipe, and a limiting step is provided on the top of the support member to restrict the position of the outer circle of the heat pipe.

[0007] Furthermore, a third capillary is provided on the inner wall of the heat pipe, a second capillary is provided on the surface of the upper shell corresponding to the evaporation chamber, a first capillary is provided on the surface of the lower shell corresponding to the evaporation chamber, and a fourth capillary is provided on the support member, with the fourth capillary overlapping the third, second, and first capillary.

[0008] Furthermore, the support members are in several pairs, and the fourth capillaries on the outer periphery of each pair of support members overlap.

[0009] Furthermore, the second capillary and the first capillary are connected by a powder ring or powder column with capillary force.

[0010] Furthermore, there are multiple support members below the through hole, and the limiting steps on the multiple support members are set around the outer periphery of the heat pipe.

[0011] Furthermore, the upper housing is provided with a limiting member for restricting the position of the outer circle of the heat pipe.

[0012] Furthermore, the limiting element is ring-shaped.

[0013] Furthermore, the heat pipe is sealed to the limiting component.

[0014] Furthermore, the lower shell, support components, and limiting steps are integrally formed.

[0015] The beneficial effects of this utility model are as follows: the support component and limiting step of this utility model enable accurate positioning of the heat pipe, facilitate vertical assembly of the heat pipe, and ensure capillary overlap; the heat pipe of this utility model can be accurately positioned, which facilitates subsequent assembly with fins; the working fluid return of this utility model is smooth, which improves the heat dissipation performance of the product. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the 3D heat spreader according to an embodiment of the present invention.

[0017] Figure 2 This is a top view of the 3D heat spreader of this utility model embodiment.

[0018] Figure 3 yes Figure 2 Cross-sectional view at point AA.

[0019] Figure 4 yes Figure 3 Enlarged view of point B in the middle.

[0020] Figure 5 This is an exploded view of the 3D heat spreader of this utility model embodiment.

[0021] Figure 6 yes Figure 5 A magnified view of point C in the middle.

[0022] Figure 7 yes Figure 5 Enlarged view of point D in the middle.

[0023] Figure 8 yes Figure 5 Enlarged view of point E in the middle.

[0024] Figure 9 This is a partial structural diagram of the 3D heat spreader according to an embodiment of the present invention.

[0025] Explanation of icon numbers 1. Upper shell, 2. Lower shell, 3. Heat pipe, 4. Through hole, 5. Support, 6. Limiting step, 7. First capillary, 8. Second capillary, 9. Third capillary, 10. Fourth capillary, 11. Powder column, 12. Limiting component. Detailed Implementation

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] In this embodiment of the invention, directional indicators (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicators will also change accordingly.

[0028] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0029] Please refer to Figures 1-9 The 3D vapor chamber of this utility model embodiment includes an upper shell, a lower shell, and a heat pipe. The upper shell and the lower shell are sealed together by diffusion welding, forming an evaporation chamber between them. The upper shell has a through hole corresponding to the heat pipe. The top end of the heat pipe is closed, and the bottom end is open, with the interior of the heat pipe communicating with the evaporation chamber. A support member is provided below the corresponding through hole on the lower shell, and the top of the support member has a limiting step for restricting the position of the outer circle of the heat pipe. The heat pipe passes through the through hole and is installed on the upper shell, with the bottom of the heat pipe contacting the support member. One open end of the heat pipe is inserted into the vapor chamber, and precise positioning is achieved through the through hole of the upper shell, the superimposed support member of the lower shell, and the limiting step on the support member.

[0030] In one implementation, a third capillary is provided on the inner wall of the heat pipe, a second capillary is provided on the surface of the upper shell corresponding to the evaporation chamber, a first capillary is provided on the surface of the lower shell corresponding to the evaporation chamber, and a fourth capillary is provided on the support member. The fourth capillary overlaps with the third, second, and first capillary, that is, the top of the fourth capillary overlaps with the second and third capillary, and the bottom of the fourth capillary overlaps with the first capillary. In a specific implementation, the fourth capillary and the first capillary are integrally sintered in one piece. The fourth capillary covers the outer periphery of the support member and the limiting step surface. The first, second, and fourth capillary are formed by sintering copper powder or welding copper mesh. The third capillary inside the heat pipe is constructed using capillary structures such as copper mesh welding or the groove features of the heat pipe itself.

[0031] The second capillary and the first capillary are connected by a powder ring or powder column with capillary force.

[0032] In one implementation, the support members are in several pairs, with the fourth capillary on the outer periphery of each pair of support members overlapping. Preferably, there are 2n pairs, where n is the number of heat pipes, that is, there are 2 pairs of support members below each heat pipe.

[0033] In one implementation, there are multiple support members below the through hole, and the limiting steps on the multiple support members are arranged around the outer periphery of the heat pipe.

[0034] In one implementation, a limiting member is provided on the outer periphery of the through hole on the upper housing to restrict the position of the outer circle of the heat pipe. The limiting member is preferably annular, and its inner diameter matches the outer diameter of the heat pipe. In a specific implementation, the limiting member and the upper housing are integrally stamped together. The heat pipe is sealed to the limiting member.

[0035] In one implementation method, the lower shell, support, and limiting step are integrally formed.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A 3D vapor chamber, comprising an upper shell, a lower shell, and a heat pipe, wherein the upper shell and the lower shell are sealed together, forming an evaporation chamber between them, the upper shell has a through hole corresponding to the heat pipe, the heat pipe passes through the through hole and is mounted on the upper shell, the top end of the heat pipe is closed, and the bottom end of the heat pipe is open, characterized in that, The lower housing has a support member below the corresponding through hole for supporting the heat pipe, and the top of the support member has a limiting step for limiting the position of the outer circle of the heat pipe.

2. The 3D heat spreader as described in claim 1, characterized in that, The inner wall of the heat pipe is provided with a third capillary, the upper shell is provided with a second capillary on the surface corresponding to the evaporation chamber, the lower shell is provided with a first capillary on the surface corresponding to the evaporation chamber, and the support is provided with a fourth capillary, which overlaps with the third, second, and first capillary.

3. The 3D heat spreader as described in claim 2, characterized in that, The support members are in several pairs, and the fourth capillary on the outer periphery of each pair of support members overlaps.

4. The 3D heat spreader as described in claim 2, characterized in that, The second capillary and the first capillary are connected by a powder ring or powder column with capillary force.

5. The 3D heat spreader as described in claim 1, characterized in that, There are multiple support components below the through hole, and the limiting steps on the multiple support components are set around the outer periphery of the heat pipe.

6. The 3D heat spreader as described in claim 1, characterized in that, The upper housing is equipped with a limiting member to restrict the position of the outer circle of the heat pipe.

7. The 3D heat spreader as described in claim 6, characterized in that, The limiting component is ring-shaped.

8. The 3D heat spreader as described in claim 7, characterized in that, The heat pipe is sealed to the limiting component.

9. The 3D heat spreader as described in claim 1, characterized in that, The lower shell, support components, and limiting steps are integrally molded.

Images