Liquid immersion bath and liquid immersion cooling apparatus

Patent metadata

Field	Value
Publication number	US-10165706-B2
Application number	US-201715602280-A
Country	US
Kind code	B2
Filing date	May 23, 2017
Priority date	Sep 1, 2016
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

A liquid immersion bath includes: a liquid immersion bath main body in which liquid coolant and an electronic device to be immersed in the coolant are placed; a coolant inlet and a coolant outlet provided to the liquid immersion bath main body; a coolant discharge port which floats on a liquid surface of the liquid coolant in the liquid immersion bath main body; and a hose which couples the coolant outlet and the coolant discharge port and bends in accordance with a movement of the coolant discharge port due to variation in a height of the liquid surface.

First claim

What is claimed is:

1. A liquid immersion bath comprising:
a liquid immersion bath main body in which liquid coolant and an electronic device to be immersed in the coolant are placed;
a coolant inlet and a coolant outlet provided to the liquid immersion bath main body;
a coolant discharge port which floats on a liquid surface of the liquid coolant in the liquid immersion bath main body; and
a hose which couples the coolant outlet and the coolant discharge port and bends in accordance with a movement of the coolant discharge port due to variation in a height of the liquid surface,
the coolant discharge port includes a suction port part having a plurality of holes at a bottom surface of the suction port part and at one side surface of the suction port part and a float which is provided so as to be in contact with an upper surface of the suction port part at a bottom surface of the float, and the hose is coupled to the other side surface of the suction port part opposite to the one side surface of the suction port part.

2. The liquid immersion bath according to claim 1 , wherein the suction port part is disposed under the float and corresponds to a suction port to suction the liquid coolant in the liquid immersion bath main body.

3. The liquid immersion bath according to claim 1 , wherein the hose is a bellows hose.

4. The liquid immersion bath according to claim 1 , wherein the hose is capable of extending and contracting.

5. The liquid immersion bath according to claim 1 , wherein a plurality of coolant discharge ports are provided as the coolant discharge port and a plurality of hoses are provided as the hose.

6. The liquid immersion bath according to claim 5 , wherein a plurality of coolant electronic devices are provided as the electronic device, the plurality of coolant discharge ports and the plurality of hoses are provided for the respective electronic devices and the plurality of hoses have a different degree of extending and contracting based on a position of the respective electronic devices.

7. The liquid immersion bath according to claim 1 , wherein the coolant inlet is disposed at a lower portion of the liquid immersion bath main body, and the coolant outlet is disposed at an upper portion of the liquid immersion bath main body.

8. A liquid immersion cooling apparatus comprising:
a liquid immersion bath in which liquid coolant and an electronic device to be immersed in the coolant are placed;
a heat exchanger;
a pump which circulates the coolant between the liquid immersion bath and the heat exchanger;
a coolant discharge port which is disposed in the liquid immersion bath and which floats on a liquid surface of the liquid coolant; and
a hose which is coupled between a coolant outlet of the liquid immersion bath and the coolant discharge port and which bends when the coolant discharge port moves due to variation in a height of the liquid surface,
the coolant discharge port includes a suction port part having a plurality of holes at a bottom surface of the suction port part and at one side surface of the suction port part and a float which is provided so as to be in contact with an upper surface of the suction port part at a bottom surface of the float, and the hose is coupled to the other side surface of the suction port part opposite to the one side surface of the suction port part.

9. The liquid immersion cooling apparatus according to claim 8 , wherein the suction port part is disposed under the float and corresponds to a suction port to suction the liquid coolant in the liquid immersion bath main body.

10. The liquid immersion cooling apparatus according to claim 8 , wherein the hose is a bellows hose.

11. The liquid immersion cooling apparatus according to claim 8 , wherein the hose is capable of extending and contracting.

12. The liquid immersion cooling apparatus according to claim 8 , wherein a plurality of coolant discharge ports are provided as the coolant discharge port and a plurality of hoses are provided as the hose.

13. The liquid immersion cooling apparatus according to claim 12 , wherein a plurality of coolant electronic devices are provided as the electronic device, the plurality of coolant discharge ports and the plurality of hoses are provided for the respective electronic devices and the plurality of hoses have a different degree of extending and contracting based on a position of the respective electronic devices.

14. The liquid immersion cooling apparatus according to claim 8 , wherein the coolant inlet is disposed at a lower portion of the liquid immersion bath main body, and the coolant outlet is disposed at an upper portion of the liquid immersion bath main body.

Assignees

• Fujitsu Ltd

Inventors

• Hirai Keita
• So Tsuyoshi
• Kosugi Naofumi

Classifications

• 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

• H05K7/20263

  Heat dissipaters releasing heat from coolant · CPC title

• F28F9/0239

  floating header boxes · CPC title

• H05K7/20236 Primary

  by immersion · CPC title

• H05K7/20772

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