Information processing system and control method for information processing system

Patent metadata

Field	Value
Publication number	US-10064313-B2
Application number	US-201715712191-A
Country	US
Kind code	B2
Filing date	Sep 22, 2017
Priority date	Oct 4, 2016
Publication date	Aug 28, 2018
Grant date	Aug 28, 2018

Abstract

An information processing system includes a chiller configured to cool a primary refrigerant; a liquid immersion tank in which a processing device including a first electronic component is immersed in a secondary refrigerant; a second electronic component coupled to the processing device; a blower configured to blow or inhale air for the second electronic component; a coil in which the secondary refrigerant is cooled by the air; an air tank that is coupled to the coil and that includes a refrigerant pipe through which the secondary refrigerant flows; a heat exchanger configured to exchange heat between the primary refrigerant and the secondary refrigerant; and a pump configured to circulate the secondary refrigerant from the liquid immersion tank to the heat exchanger.

First claim

What is claimed is:

1. An information processing system, comprising:
a chiller configured to cool a primary refrigerant;
a liquid immersion tank in which a processing device including a first electronic component is immersed in a secondary refrigerant;
a second electronic component coupled to the processing device;
a blower configured to blow or inhale air for the second electronic component;
a coil in which the secondary refrigerant is cooled by the air;
an air tank that is coupled to the coil and that includes a refrigerant pipe through which the secondary refrigerant flows;
a heat exchanger configured to exchange heat between the primary refrigerant and the secondary refrigerant; and
a pump configured to circulate the secondary refrigerant from the liquid immersion tank to the heat exchanger.

2. The information processing system according to claim 1 ,
wherein the liquid immersion tank and the air tank are coupled in parallel between a first pipe through which the secondary refrigerant that comes out from the heat exchanger flows and a second pipe through which the secondary refrigerant to return to the heat exchanger flows.

3. The information processing system according to claim 1 ,
wherein the liquid immersion tank and the air tank are coupled in series between a first pipe through which the secondary refrigerant that comes out from the heat exchanger flows and a second pipe through which the secondary refrigerant to return to the heat exchanger flows.

4. The information processing system according to claim 1 ,
wherein the second electronic component has lower liquid immersion resistance than that of the first electronic component.

5. The information processing system according to claim 1 ,
wherein, at a time of passing through the coil, the air is cooled by the secondary refrigerant flowing through the coil.

6. The information processing system according to claim 3 , wherein
the coil includes a first coil configured to cool the air before the air is blown to the second electronic component and a second coil configured to cool the air after the air is blown to the second electronic component, and
the first coil covers the first pipe, and the second coil covers the second pipe.

7. The information processing system according to claim 6 ,
wherein the secondary refrigerant that passes through the second coil flows through the second pipe and enters the liquid immersion tank, joins the secondary refrigerant that cools the first electronic component, and moves from the liquid immersion tank to the heat exchanger via the pump.

8. The information processing system according to claim 7 ,
wherein the secondary refrigerant that enters the heat exchanger is cooled by the primary refrigerant.

9. The information processing system according to claim 3 ,
wherein the secondary refrigerant that comes out from the heat exchanger flows through the first pipe and is supplied to the liquid immersion tank and the air tank.

10. A control method executed by an information processing system including a chiller configured to cool a primary refrigerant, a liquid immersion tank in which a processing device including a first electronic component is immersed in a secondary refrigerant, a second electronic component coupled to the processing device, and an air tank that is coupled to a coil and that includes a refrigerant pipe through which the secondary refrigerant flows, the control method comprising:
blowing or inhaling air for the second electronic component, by using a blower included in the information processing system;
cooling the secondary refrigerant by use of the air, by using the coil;
exchanging heat between the primary refrigerant and the secondary refrigerant, by using a heat exchanger included in the information processing system; and
circulating the secondary refrigerant from the liquid immersion tank to the heat exchanger, by using a pump included in the information processing system.

11. The control method according to claim 10 ,
wherein the liquid immersion tank and the air tank are coupled in parallel between a first pipe through which the secondary refrigerant that comes out from the heat exchanger flows and a second pipe through which the secondary refrigerant to return to the heat exchanger flows.

12. The control method according to claim 10 ,
wherein the liquid immersion tank and the air tank are coupled in series between a first pipe through which the secondary refrigerant that comes out from the heat exchanger flows and a second pipe through which the secondary refrigerant to return to the heat exchanger flows.

13. The control method according to claim 10 ,
wherein the second electronic component has lower liquid immersion resistance than that of the first electronic component.

14. The control method according to claim 10 ,
wherein, at a time of passing through the coil, the air is cooled by the secondary refrigerant flowing through the coil.

Assignees

• Fujitsu Ltd

Inventors

• Ishinabe Minoru

Classifications

• H05K7/20781 Primary

  within cabinets for removing heat from server blades · CPC title

• H05K7/20736

  within cabinets for removing heat from server blades · 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

• H05K7/20263

  Heat dissipaters releasing heat from coolant · CPC title

• H05K7/20236

  by immersion · CPC title