Heat-transfer member and cooling system

Patent metadata

Field	Value
Publication number	US-2022196340-A1
Application number	US-202017600752-A
Country	US
Kind code	A1
Filing date	Apr 30, 2020
Priority date	May 9, 2019
Publication date	Jun 23, 2022
Grant date	—

Abstract

A heat-transfer member (1) is used in a cooling system in which an alcohol serves as a coolant. The heat-transfer member (1) has: a heat-receiving surface (11) configured such that it can receive heat from a heat-generating body; and a heat-dissipating surface (12) configured such that it can dissipate, to the coolant, the heat received at the heat-receiving surface (11). The heat-dissipating surface (12) has a plurality of pores (121) whose average pore diameter is 5 nm or more and 1,000 nm or less. A cooling system can be configured by causing the coolant to contact the heat-dissipating surface (12) of the heat-transfer member (1).

First claim

1 . A heat-transfer member configured for use in a cooling system, in which an alcohol serves as a coolant, wherein:
the heat-transfer member has:
a heat-receiving surface configured to receive heat from a heat-generating body; and
a heat-dissipating surface configured to dissipate, to the coolant, the heat received at the heat-receiving surface; and
a plurality of pores are defined on the heat-dissipating surface and an average pore diameter of the pores is 5 nm or more and 1,000 nm or less.

2 . The heat-transfer member according to claim 1 , wherein the pores have an average depth of 0.05 μm or more and 10 μm or less.

3 . The heat-transfer member according to claim 1 , wherein the heat-dissipating surface has a coolant-philic part that exhibits a contact angle with respect to ethanol of 40° or less.

4 . The heat-transfer member according to claim 3 , wherein the heat-dissipating surface has a coolant-phobic part disposed adjacent to the coolant-philic part, the coolant-phobic part exhibiting a contact angle with respect to ethanol of 90° or more.

5 . The heat-transfer member according to claim 4 , wherein the heat-dissipating surface has a plurality of the coolant-phobic parts.

6 . A cooling system comprising:
the heat-transfer member according to claim 1 ; and a coolant.

7 . The cooling system according to claim 6 , wherein the cooling system is configured such that, when the coolant begins to boil, the degree of superheating of the coolant on the heat-dissipating surface becomes 20 K or lower.

8 . The cooling system according to claim 6 , wherein the coolant is ethanol.

9 . The cooling system according to claim 6 , wherein the coolant has a boiling temperature less than 100° C.

10 . The cooling system according to claim 9 , wherein:
the coolant comprises ethanol, the pores have an average depth of 0.05-10 μm, the heat-dissipating surface has a coolant-philic part that exhibits a contact angle with respect to ethanol of 40° or less, and the heat-dissipating surface also has a coolant-phobic part disposed adjacent to the coolant-philic part, the coolant-phobic part exhibiting a contact angle with respect to ethanol of 90° or more.

11 . The cooling system according to claim 10 , wherein:
the heat-dissipating surface has a plurality of the coolant-phobic parts, the average pore diameter is 10-700 nm, the heat-dissipating surface is anodized, and at least some of the pores are located within the coolant-philic part.

12 . The heat-transfer member according to claim 1 , wherein the average pore diameter is 10-1000 nm.

13 . The heat-transfer member according to claim 1 , wherein the average pore diameter is 10-50 nm.

14 . The heat-transfer member according to claim 2 , wherein the average pore depth is 0.1-10 μm.

15 . The heat-transfer member according to claim 1 , wherein the heat-dissipating surface is anodized.

16 . The heat-transfer member according to claim 3 , wherein at least some of the pores are located within the coolant-philic part.

17 . The heat-transfer member according to claim 5 , wherein at least some of the pores are located within the coolant-philic part.

18 . The heat-transfer member according to claim 17 , wherein two or more of the coolant-phobic parts are provided per square centimeter.

19 . The heat-transfer member according to claim 18 , wherein the heat-dissipating surface is anodized.

20 . The heat-transfer member according to claim 19 , wherein:
the average pore diameter is 10-50 nm, and the average pore depth is 0.1-10 μm.

Assignees

• Univ Kyushu Nat Univ Corp
• Uacj Corp

Inventors

• Takata Yasuyuki
• Takahashi Koji
• Shen Biao
• NUNOMURA Junji
• Bekki Yoichiro
• Fukatsu Akihiro

Classifications

• H10W40/73

  for cooling by change of state · CPC title

• H10W72/00

  Interconnections or connectors in packages · CPC title

• F28F2200/005

  Testing heat pipes · CPC title

• F28D15/046 Primary

  characterised by the material or the construction of the capillary structure · CPC title

• H05K7/20309

  Evaporators · CPC title