Electronic device and liquid cooling heat dissipation structure thereof

Patent metadata

Field	Value
Publication number	US-2016338223-A1
Application number	US-201514708429-A
Country	US
Kind code	A1
Filing date	May 11, 2015
Priority date	May 11, 2015
Publication date	Nov 17, 2016
Grant date	—

Abstract

A liquid cooling heat dissipation structure includes a heat-conducting substrate, a fluid-splitting board, a fluid-conducting board, and a liquid supply module. The heat-conducting substrate has a heat-conducting body contacting a heat generation source and a plurality of heat-dissipating fins disposed on the heat-conducting body. The fluid-splitting board is disposed on the heat-dissipating fins. The fluid-conducting board is disposed on the fluid-splitting board. The liquid supply module includes an external cover body detachably disposed on the heat-conducting body and at least two pumps detachably disposed on the external cover body. The external cover body has at least one liquid inlet and at least one liquid outlet, and cooling liquid flows into the external cover body through the at least one liquid inlet and flows out of the external cover body through the at least one liquid outlet by driving one or all of the at least two pumps.

First claim

What is claimed is:

1 . A liquid cooling heat dissipation structure, comprising:
a heat-conducting substrate having a heat-conducting body contacting a heat generation source and a plurality of heat-dissipating fins disposed on the heat-conducting body; a fluid-splitting board disposed on the heat-dissipating fins; a fluid-conducting board disposed on the fluid-splitting board; and a liquid supply module including an external cover body detachably disposed on the heat-conducting body and at least two pumps detachably disposed on the external cover body, wherein the heat-dissipating fins, the fluid-splitting board, and the fluid-conducting board are received inside the external cover body; wherein the fluid-conducting board has at least two first fluid-conducting openings respectively corresponding to the at least two pumps and a second fluid-conducting opening communicated with the at least two first fluid-conducting openings through a first receiving space, and the fluid-splitting board has a first fluid-splitting opening communicated with the second fluid-conducting opening through a second receiving space and a second fluid-splitting opening communicated with the first fluid-splitting opening through a third receiving space; wherein the external cover body has at least one liquid inlet communicated with the at least two first fluid-conducting openings through a fourth receiving space and at least one liquid outlet communicated with the second fluid-splitting opening through a fifth receiving space, and cooling liquid flows into the external cover body through the at least one liquid inlet and flows out of the external cover body through the at least one liquid outlet by driving one or all of the at least two pumps.

2 . The liquid cooling heat dissipation structure of claim 1 , wherein the fluid-conducting board has a plurality of support portions disposed on the bottom side thereof to directly contact the fluid-splitting board and a plurality of wall portions disposed on the bottom side thereof to directly contact the fluid-splitting board, and the fluid-conducting board has a convex portion disposed on the top side thereof and between the first receiving space and the second receiving space, wherein the first fluid-splitting opening of the fluid-splitting board has a strip-shaped opening portion and a buffer opening portion communicated with the strip-shaped opening portion.

3 . The liquid cooling heat dissipation structure of claim 2 , wherein the first receiving space is formed between the external cover body and the fluid-conducting board, both the second receiving space and the fourth receiving space are formed between the fluid-conducting board and the fluid-splitting board, the third receiving space is formed between the fluid-splitting board and the heat-conducting body, and the second receiving space and the fourth receiving space are isolated from each other through the wall portions.

4 . The liquid cooling heat dissipation structure of claim 1 , wherein one of the at least two pumps has a first rotary component disposed between the external cover body and the fluid-conducting board, the other pump has a second rotary component disposed between the external cover body and the fluid-conducting board and adjacent to the first rotary component, wherein the first receiving space has a first space portion receiving the first rotary component and communicated with one of the at least two first fluid-conducting openings, a second space portion receiving the second rotary component and communicated with the other first fluid-conducting opening, and a common space portion corresponding to the first space portion and the second space portion and communicated with the second fluid-conducting opening, wherein the common space portion is communicated with the first space portion through a first connection opening, and the common space portion is communicated with the second space portion through a second connection opening.

5 . The liquid cooling heat dissipation structure of claim 4 , further comprising: a movable component disposed among the first space portion, the second space portion, and the common space portion.

6 . The liquid cooling heat dissipation structure of claim 5 , wherein when the cooling liquid flows inside the external cover body by driving the first rotary component only, the movable component is pushed toward the second space portion to enclose the second connection opening by the cooling liquid, so that the cooling liquid is transmitted to the common space portion through the first connection opening only.

7 . The liquid cooling heat dissipation structure of claim 5 , wherein when the cooling liquid flows inside the external cover body by driving the second rotary component only, the movable component is pushed toward the first space portion to enclose the first connection opening by the cooling liquid, so that the cooling liquid is transmitted to the common space portion through the second connection opening only.

8 . The liquid cooling heat dissipation structure of claim 5 , wherein when the cooling liquid flows inside the external cover body by concurrently driving the first rotary component and the second rotary component, the movable component is pushed and substantially disposed between the first space portion and the second space portion for concurrently opening the first connection opening and the second connection opening by the cooling liquid, so that the cooling liquid is transmitted to the common space portion through both the first connection opening and the second connection opening.

9 . An electronic device including a liquid cooling heat dissipation structure disposed on at least one heat generation source thereof, the liquid cooling heat dissipation structure comprising:
a heat-conducting substrate having a heat-conducting body contacting the at least one heat generation source and a plurality of heat-dissipating fins disposed on the heat-conducting body; a fluid-splitting board disposed on the heat-dissipating fins; a fluid-conducting board disposed on the fluid-splitting board; and a liquid supply module including an external cover body detachably disposed on the heat-conducting body and at least two pumps detachably disposed on the external cover body, wherein the heat-dissipating fins, the fluid-splitting board, and the fluid-conducting board are received inside the external cover body; wherein the fluid-conducting board has at least two first fluid-conducting openings respectively corresponding to the at least two pumps and a second fluid-conducting opening communicated with the at least two first fluid-conducting openings through a first receiving space, and the fluid-splitting board has a first fluid-splitting opening communicated with the second fluid-conducting opening through a second receiving space and a second fluid-splitting opening communicated with the first fluid-splitting opening through a third receiving space; wherein the external cover body has at least one liquid inlet communicated with the at least two first fluid-conducting openings through a fourth receiving space and at least one liquid outlet communicated with the second fluid-splitting opening through a fifth receiving space, and cooling liquid flows into the external cover body through the at least one liquid inlet and flows out of the external cover body through the at least one liquid outlet by driving one or all of the at least two pumps.

10 . The electronic device of claim 9 , wherein the fluid-conducting board has a plurality of support portions disposed on the bottom side thereof to directly contact the fluid-splitting board and a plurality of wall portions disposed on the bottom si

Assignees

• Cooler Master Co Ltd

Inventors

• Tsai Shui-Fa
• Lin Chun-Hung

Classifications

• H10W40/47

  by flowing liquids, e.g. forced water cooling · CPC title

• G06F1/20 Primary

  Cooling means · CPC title

• H05K7/20263 Primary

  Heat dissipaters releasing heat from coolant · CPC title

• G06F2200/201

  Cooling arrangements using cooling fluid · CPC title

• F28F13/06

  by affecting the pattern of flow of the heat-exchange media {(F28F13/003 takes precedence; static flow control means in header boxes F28F9/026)} · CPC title