Immersion cooling device and seal tank

Patent metadata

Field	Value
Publication number	US-10015905-B2
Application number	US-201715460764-A
Country	US
Kind code	B2
Filing date	Mar 16, 2017
Priority date	Mar 28, 2016
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

An immersion cooling device includes a refrigerant tank configured to accommodate a refrigerant liquid in which an electronic device is immersed; a seal tank configured to accommodate a sealing material and communicate with the refrigerant tank through an upper space of the seal tank, a cable connected to the electronic device being disposed in the upper portion space; and a partition member that, in a state in which a portion of the cable disposed in the upper portion space is immersed in the sealing material in a liquid state, partitions the upper portion space into a first space that is in communication with the refrigerant tank, and a second space that is in communication with an outside of the seal tank.

First claim

What is claimed is:

1. An immersion cooling device, comprising:
a refrigerant tank configured to accommodate a refrigerant liquid and a first upper space;
a seal tank configured to accommodate a sealing material and communicate with the first upper space of the refrigerant tank through an upper space of the seal tank; and
a partition member configured to separate the upper space of the seal tank with the sealing material into a second upper space which communicates with the first upper space of the refrigerant tank and a third upper space which communicates with the outside of the seal tank, wherein
the first upper space of the refrigerant tank and the second upper space of the seal tank are sealed by the refrigerant tank, the refrigerant liquid, the seal tank, the sealing material, and the partition member.

2. The immersion cooling device according to claim 1 , wherein
when an electronic device including a cable is immersed in the refrigerant tank, the cable is arranged from the refrigerant tank to the outside through the second upper space, the sealing material, and the third upper space.

3. An immersion cooling device, comprising:
a refrigerant tank configured to accommodate a refrigerant liquid in which an electronic device is immersed;
a seal tank configured to accommodate a sealing material and communicate with the refrigerant tank through an upper space of the seal tank, a cable connected to the electronic device being disposed in the upper portion space; and
a partition member that, in a state in which a portion of the cable disposed in the upper portion space is immersed in the sealing material in a liquid state, partitions the upper portion space into a first space that is in communication with the refrigerant tank, and a second space that is in communication with an outside of the seal tank.

4. The immersion cooling device according to claim 3 ,
wherein the seal tank includes
a seal tank body configured to include a seal tank opening at an upper portion thereof, the seal tank body accommodating the sealing material, and
a seal tank lid configured to open and close the seal tank opening, and wherein, in a state in which the seal tank lid is provided and in which the seal tank lid closes the seal tank opening, the partition member partitions the upper space.

5. The immersion cooling device according to claim 4 ,
wherein the seal tank lid is connected to the seal tank body with a hinge, and the seal tank opening is opened and closed upon pivoting of the seal tank lid about the hinge.

6. The immersion cooling device according to claim 4 ,
wherein the partition member slides with respect to the seal tank lid in a thickness direction of the seal tank lid.

7. The immersion cooling device according to claim 3 ,
wherein, in a state in which the partition member partitions the upper space, a lower end portion of the partition member is in contact with the sealing material.

8. The immersion cooling device according to claim 7 ,
wherein the partition member partitions the upper space while a wiring space of the cable is formed between the lower end portion of the partition member and a bottom of the seal tank.

9. The immersion cooling device according to claim 7 ,
wherein an underside of the lower end portion of the partition member is a curved surface forming a downwards convexity.

10. The immersion cooling device according to claim 3 , wherein, in a state in which the partition member partitions the upper space, a lower end portion of the partition member is immersed in the sealing material in a liquid state.

11. The immersion cooling device according to claim 3 , further comprising
an evaporation suppression material that floats on a liquid surface of the sealing material in a liquid state.

12. The immersion cooling device according to claim 3 ,
wherein the seal tank includes an inner pressure adjustment hole that opens the first space to the atmosphere.

13. The immersion cooling device according to claim 3 ,
wherein the partition member includes an inner pressure adjustment hole that connects the first space and the second space to each other.

14. The immersion cooling device according to claim 3 ,
wherein the refrigerant tank includes an inner pressure adjustment hole that opens an upper space of the refrigerant tank to the atmosphere.

15. The immersion cooling device according to claim 3 ,
wherein the seal tank includes a connection port that connects the first space and the refrigerant tank to each other and through which the cable passes.

16. The immersion cooling device according to claim 3 ,
wherein the seal tank includes a cable outlet through which the cable is drawn out from the second space to an outside of the refrigerant tank.

17. The immersion cooling device according to claim 3 ,
the partition member includes a cable holder that, while holding the cable, immerses the cable in the sealing material in a liquid state.

18. The immersion cooling device according to claim 3 ,
wherein the sealing material is a liquid, and
wherein the immersion cooling device further includes a sealing material cooler that cools the sealing material and that changes the sealing material into a solid state.

19. The immersion cooling device according to claim 3 ,
wherein the sealing material is a solid, and
wherein the immersion cooling device further includes a sealing material heater that heats the sealing material and that changes the sealing material into a liquid state.

20. The immersion cooling device according to claim 3 ,
wherein the refrigerant tank includes
a refrigerant tank body including a storage opening at an upper portion thereof through which the electronic device is accommodated, the refrigerant tank body accommodating the electronic device and the refrigerant liquid, and
a refrigerant tank lid that opens and closes the storage opening.

Assignees

• Fujitsu Ltd

Inventors

• Watanabe Masayuki
• Kubo Hideo

Classifications

• H05K7/20809

  within server blades for removing heat from heat source · CPC title

• H05K7/20236 Primary

  by immersion · CPC title

• H05K7/20272

  Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds · CPC title

• H10W40/47

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

• H01L23/473

  Electricity · mapped topic