Cooling apparatus and electronic device

Patent metadata

Field	Value
Publication number	US-9961804-B2
Application number	US-201615384790-A
Country	US
Kind code	B2
Filing date	Dec 20, 2016
Priority date	Feb 19, 2016
Publication date	May 1, 2018
Grant date	May 1, 2018

Abstract

A cooling apparatus includes: a circulation path of coolant; a first pump provided in the circulation path, the first pump including a first inlet and a first outlet; a second pump connected to the first pump, the second pump including a second inlet and a second outlet; a first main pipe with one end connected to the first outlet; a second main pipe with one end connected to the second inlet; a connection portion connecting another ends of the first and second main pipe; a first bypass pipe connecting the first inlet and the connection portion; and a second bypass pipe connecting the second outlet and the connection portion, wherein the first main pipe and the second bypass pipe are connected in a same direction in the connection portion, and the second main pipe and the first bypass pipe are connected in the same direction.

First claim

What is claimed is:

1. A cooling apparatus comprising:
a circulation path in which a coolant circulates to cool an electronic component;
a first pump provided in the circulation path, the first pump including a first inlet configured to take in the coolant and a first outlet configured to discharge the coolant;
a second pump connected to the first pump in series in the circulation path, the second pump including a second inlet configured to take in the coolant and a second outlet configured to discharge the coolant;
a first main pipe positioned on a first straight line with one end that is connected to the first outlet;
a second main pipe positioned on a second straight line with one end that is connected to the second inlet, where the second straight line being different from the first straight line;
a connection portion configured to connect another end of the first main pipe and another end of the second main pipe;
a first bypass pipe positioned on the second straight line configured to bypass the first pump by connecting the first inlet side of the first pump and the connection portion; and
a second bypass pipe positioned on the first straight line configured to bypass the second pump by connecting the second outlet side of the second pump and the connection portion, wherein
the first main pipe and the second bypass pipe are connected in a same direction in the connection portion, and the second main pipe and the first bypass pipe are connected in a same direction in the connection portion.

2. The cooling apparatus according to claim 1 , wherein
an angle formed by the first main pipe and the first bypass pipe is acute.

3. The cooling apparatus according to claim 2 , wherein
the connection portion is a pipe, the first main pipe and the bypass pipe are connected to one end of the pipe, and
the second main pipe and the second bypass pipe are connected to another end of the pipe.

4. The cooling apparatus according to claim 2 , wherein
a cross-sectional area of the pipe is equal to a sum of a cross-sectional area of the first main pipe and a cross-sectional area of the first bypass pipe.

5. The cooling apparatus according to claim 1 , wherein
an inner diameter of the first bypass pipe is equal to an inner diameter of the second main pipe, and
an inner diameter of the second bypass pipe is equal to an inner diameter of the first main pipe.

6. An electronic device comprising:
an electronic component, and
a cooling apparatus configured to cool the electronic component, wherein
the cooling apparatus includes:
a circulation path in which a coolant circulates to cool an electronic component;
a first pump provided in the circulation path, the first pump including a first inlet configured to take in the coolant and a first outlet configured to discharge the coolant;
a second pump connected to the first pump in series in the circulation path, the second pump including a second inlet configured to take in the coolant and a second outlet configured to discharge the coolant;
a first main pipe positioned on a first straight line with one end that is connected to the first outlet;
a second main pipe positioned on a second straight line with one end that is connected to the second inlet, where the second straight line being different from the first straight line;
a connection portion configured to connect another end of the first main pipe and another end of the second main pipe;
a first bypass pipe positioned on the second straight line configured to bypass the first pump by connecting the first inlet side of the first pump and the connection portion; and
a second bypass pipe positioned on the first straight line configured to bypass the second pump by connecting the second outlet side of the second pump and the connection portion, wherein
the first main pipe and the second bypass pipe are connected in a same direction in the connection portion, and the second main pipe and the first bypass pipe are connected in a same direction in the connection portion.

Assignees

• Fujitsu Ltd

Inventors

• Hayashi Nobuyuki
• Nakanishi Teru

Classifications

• H05K7/20309

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