Cooling device and electronic device

Patent metadata

Field	Value
Publication number	US-10470337-B2
Application number	US-201916254698-A
Country	US
Kind code	B2
Filing date	Jan 23, 2019
Priority date	Jul 26, 2016
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

A cooling device includes an immersion tank to store a coolant where an electronic component is immersed and cause the coolant to evaporate by heat from the electronic component into vapor, a condenser tube including a starting end to which the vapor is supplied and a termination end from which the condensed vapor is discharged, an isolating part arranged in a midway part of the condenser tube, a coolant tank to accommodate the termination end of the condenser tube and the isolating part inside and store the coolant discharged from the condenser tube, an air tube that has a starting end coupled to the coolant tank and a termination end coupled to the starting end of the condenser tube, a liquid tube to supply the coolant from the coolant tank to the immersion tank, and a steam tube to supply the vapor from the immersion tank to the condenser tube.

First claim

What is claimed is:

1. A cooling device comprising:
an immersion tank to store a coolant where an electronic component is immersed and cause the coolant to evaporate by heat from the electronic component into vapor;
a condenser tube including a starting end to which the vapor is supplied and a termination end from which the condensed vapor is discharged;
an isolating part arranged in a midway part of the condenser tube, the isolating part to isolate the condensed coolant from air and take out the air to outside of the condenser tube;
a coolant tank to accommodate the termination end of the condenser tube and the isolating part inside and store the coolant discharged from the condenser tube, the coolant tank including a hole through which air passes;
an air tube that has a starting end coupled to the coolant tank and a termination end coupled to the starting end of the condenser tube, the air tube to supply air from the coolant tank to the condenser tube;
a liquid tube to supply the coolant from the coolant tank to the immersion tank; and
a steam tube to supply the vapor from the immersion tank to the condenser tube.

2. The cooling device according to claim 1 ,
wherein the liquid tube has a first check valve to avoid a backflow of the coolant from the immersion tank to the coolant tank.

3. The cooling device according to claim 1 ,
wherein the air tube has a second check valve to avoid a backflow of air from the termination end of the air tube to the starting end of the air tube.

4. The cooling device according to claim 1 ,
wherein the steam tube is coupled to the starting end of the condenser tube so that a center axis of the steam tube goes out of a center of the condenser tube when viewed from an axial direction of the condenser tube.

5. The cooling device according to claim 1 ,
wherein the midway part of the condenser tube extends along a vertical direction, and
the isolating part has a tube including a first opening end positioned inside the condenser tube in the midway part and a second opening end positioned higher than the first opening end outside the condenser tube in the midway part.

6. The cooling device according to claim 5 ,
wherein the first opening end protrudes toward inside the condenser tube.

7. The cooling device according to claim 1 ,
wherein the immersion tank has an opening allowing the electronic component to be loaded and unloaded, and
the opening has an attachable and detachable cover.

8. The cooling device according to claim 7 , further comprising:
a connector fixed to an outer surface of the cover; and
a cable to couple the connector and the electronic component.

9. The cooling device according to claim 7 ,
wherein the cooling device has a plurality of the immersion tanks.

10. The cooling device according to claim 9 , further comprising:
a first manifold coupled to the liquid tube;
a plurality of first branch pipes coupled to the first manifold to respectively correspond to the plurality of immersion tanks;
first attachable and detachable joints to respectively couple the plurality of first branch pipes and the plurality of immersion tanks;
a second manifold coupled to the steam tube;
a plurality of second branch pipes coupled to the second manifold to respectively correspond to the plurality of immersion tanks; and
second attachable and detachable joints to respectively couple the plurality of second branch pipes and the plurality of immersion tanks.

11. An electronic device comprising:
an electronic component; and
a cooling device to cool the electronic component,
wherein the cooling device includes
an immersion tank to store a coolant where the electronic component is immersed and cause the coolant to evaporate by heat from the electronic component into vapor,
a condenser tube including a starting end to which the vapor is supplied and a termination end from which the condensed vapor is discharged,
an isolating part arranged in a midway part of the condenser tube, the isolating part to isolate the condensed coolant from air and take out the air to outside of the condenser tube,
a coolant tank to accommodate the termination end of the condenser tube and the isolating part inside and store the coolant discharged from the condenser tube, the coolant tank including a hole through which air passes,
an air tube that has a starting end coupled to the coolant tank and a termination end coupled to the starting end of the condenser tube, the air tube to supply air from the coolant tank to the condenser tube,
a liquid tube to supply the coolant from the coolant tank to the immersion tank, and
a steam tube to supply the vapor from the immersion tank to the condenser tube.

Assignees

• Fujitsu Ltd

Inventors

• Uchida Hiroki

Classifications

• H10W40/73

  for cooling by change of state · CPC title

• H10W40/30

  wherein the packaged device is completely immersed in a fluid other than air, e.g. immersed in a cryogenic fluid · CPC title

• H05K7/20818

  within cabinets for removing heat from server blades · CPC title

• H05K7/20318

  Condensers · CPC title

• H05K7/20809

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