Composite heat dissipation module and electronic device

Abstract

A composite heat dissipation module includes a slotted vapor chamber, two fin assemblies, multiple first heat pipes, and multiple second heat pipes. The slotted vapor chamber includes multiple elongated protrusions spaced apart on the vapor chamber and together with the vapor chamber define a groove group. The groove group includes multiple first grooves and second grooves, which are arranged alternately. The fin assemblies are interconnected and fixed to the elongated protrusions. A first section of each first heat pipe is thermally connected to one of its fin assemblies, and a second section is fixed within one of the first grooves and tightly fitted to the inner wall of the first groove. A first section of each second heat pipe is thermally connected to another fin assembly, and a second section is fixed within one of the second grooves and tightly fitted to the inner wall of the second groove.

Claims

1. A composite heat dissipation module, comprising: A heat spreader includes a plate body, an airtight chamber, and a plurality of elongated protrusions. The elongated protrusions are spaced apart on a top surface of the plate body and together with the top surface of the plate body, define a groove group. The groove group includes a plurality of first grooves and a plurality of second grooves arranged alternately. The airtight chamber is formed within both the plate body and the elongated protrusions. A first fin group is fixed to the elongated protrusions. A second fin group is connected to the side of the first fin group. A plurality of first heat pipes, each of which includes a first section and a second section, the first section being thermally connected to the first fin assembly, the second section being fixed within one of the first trenches and tightly coupled to the inner wall of one of the first trenches; and a plurality of second heat pipes, each of which includes a first tube section and a second tube section, the first tube section being thermally connected to the second fin assembly, the second tube section being fixed within one of the second trenches and tightly coupled to the inner wall of one of the second trenches.

2. The composite heat dissipation module as claimed in claim 1, wherein the second section of each of the first heat pipes has a rectangular cross-section within the first trench, and the second section of each of the second heat pipes has a rectangular cross-section within the second trench.

3. The composite heat dissipation module as described in claim 1, wherein the first segment and the second segment of each of the first heat pipes do not overlap in a vertical direction, and the first segment and the second segment of each of the second heat pipes are located at different heights in the vertical direction.

4. The composite heat dissipation module as claimed in claim 1, wherein each of the first heat pipes is located within both the first fin group and the second fin group, wherein each of the first heat pipes further includes a third section located within the second fin group, and the second section connects the first section and the third section respectively.

5. The composite heat dissipation module as described in claim 4, wherein the first section, the second section and the third section of each of the first heat pipes are located at different heights in the vertical direction.

6. The composite heat dissipation module as claimed in claim 1 further comprises: a plurality of third heat pipes arranged parallel to and interleaved with the second heat pipes, each of the third heat pipes comprising a first region and a second region, the first region being located within the second fin group, the end of the second region being located within one of the first trenches and tightly coupled to the inner wall of the first trench, wherein one end of the second segment of each of the first heat pipes contacts the end of the second region of the third heat pipe.

7. The composite heat dissipation module as claimed in claim 6, wherein the first segment of each of the second heat pipes and the first region of the third heat pipe are at different heights in the vertical direction.

8. The composite heat dissipation module as claimed in claim 1 further comprises: a fan assembly placed on the first fin group and the second fin group, wherein the heat spreader, the first fin group, the second fin group, the first heat pipes and the second heat pipes are all contained within an airflow range of the fan assembly.

9. The composite heat dissipation module as claimed in claim 8, wherein the fan assembly comprises: an outer casing having a receiving groove serving as the airflow range; and a plurality of fan units fixed within the receiving groove, at least partially overlapping the first fin group and the second fin group.

10. An electronic device comprising: An electronic component that includes a heat source; And a composite heat dissipation module as described in any one of claims 1 to 9, wherein the bottom surface of the heat sink is thermally connected to the heat source.

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