Cooling plate and information processing device

• US 10,443,957 B2
• Filed: 08/23/2018
• Issued: 10/15/2019
• Est. Priority Date: 09/27/2017
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Kikuchi, Shunichi, Iwakiri, Yoshihisa, Nakamura, Naoaki, Matsumura, Takayoshi
• Primary Examiner(s): Dravininkas, Adam B
• Application Number:
  US16/110,159
• Publication Number:
  US 20190093964A1
• Time in Patent Office: 418 Days
• CPC Class Codes: F28D 2001/0266 Particular core assemblies, e.g. having different orientations or having different geometric features
• CPC Class Codes: F28D 2021/0029 Heat sinks
• CPC Class Codes: F28F 2009/0297 Side headers, e.g. for radiators having conduits laterally connected to common header
• CPC Class Codes: F28F 2210/08 Assemblies of conduits having different features
• CPC Class Codes: F28F 3/12 Elements constructed in the shape of a hollow panel, e.g. with channels F28D1/02, F28D1/03 take precedence
• CPC Class Codes: F28F 9/0204 for elongated header box, e.g. with transversal and longitudinal partitions
• CPC Class Codes: F28F 9/0221 Header boxes or end plates formed by stacked elements
• CPC Class Codes: F28F 9/0278 in the form of stacked distribution plates or perforated plates arranged over end plates
• CPC Class Codes: G06F 1/20 Cooling means
• CPC Class Codes: G06F 2200/201 Cooling arrangements using cooling fluid
• CPC Class Codes: H01L 23/473 by flowing liquids H01L23/4332, H01L23/4338 take precedence
• CPC Class Codes: H05K 7/20254 Cold plates transferring heat from heat source to coolant
• CPC Class Codes: H05K 7/20772 within server blades for removing heat from heat source

Abstract

A cooling plate that includes: a plate that is attached to a heat generating element; feed flow paths and return flow paths for coolant that are alternatingly arranged along a plate face of the plate; and a plurality of coolant flow paths that are formed in a plurality of levels within the plate closer to the heat generating element than the feed flow paths and the return flow paths, the plurality of coolant flow paths placing adjacent paths of the feed flow paths and the return flow paths in parallel communication through each of the levels.

Claims

1. A cooling plate comprising:

a plate that has a first surface and a second surface;

a heat generating element attached to the first surface of the plate;

feed flow paths and return flow paths for coolant that are alternatingly arranged along the second surface of the plate; and

a plurality of coolant flow paths formed within the plate, each of which paths is positioned at a plurality of levels along a direction from the second surface to the first surface, closer to the heat generating element than the feed flow paths and the return flow paths, the plurality of coolant flow paths communicating in parallel through each of the coolant flow paths of each level between adjacent paths of the feed flow paths and the return flow paths, wherein each of the coolant flow paths is separated from the other coolant flow paths by a wall.

2. The cooling plate of claim 1, wherein a cross-sectional area of each of the plurality of coolant flow paths becomes greater the closer the levels get to the heat generating element.

3. The cooling plate of claim 1, wherein a height of each of the coolant flow paths becomes greater as the levels get closer to the heat generating element.

4. The cooling plate of claim 1, wherein a size of each of inlets and outlets of the coolant flow paths becomes greater as the levels get closer to the heat generating element.

5. The cooling plate of claim 1, wherein a number of levels of the coolant flow paths varies according to a location on the heat generating element.

6. An information processing device comprising:

a heat generating element; and

a cooling plate including

a plate that has a first surface and a second surface;

a heat generating element attached to the first surface of the plate;

feed flow paths and return flow paths for coolant that are alternatingly arranged along the second surface of the plate; and

a plurality of coolant flow paths formed within the plate, each of which paths is positioned at a plurality of levels along a direction from the second surface to the first surface, closer to the heat generating element than the feed flow paths and the return flow paths, the plurality of coolant flow paths communicating in parallel through each of the coolant flow paths of each level between adjacent paths of the feed flow paths and the return flow paths, wherein each of the coolant flow paths is separated from the other coolant flow paths by a wall.

7. The information processing device of claim 6, wherein a cross-sectional area of each of the plurality of coolant flow paths becomes greater the closer the levels get to the heat generating element.

8. The information processing device of claim 6, wherein a height of each of the coolant flow paths becomes greater as the levels get closer to the heat generating element.

9. The information processing device of claim 6, wherein a size of each of inlets and outlets of the coolant flow paths becomes greater as the levels get closer to the heat generating element.

10. The information processing device of claim 6, wherein a number of levels of the coolant flow paths varies according to a location on the heat generating element.