Pump, electronic apparatus, and cooling system

• US 20050241312A1
• Filed: 04/11/2005
• Published: 11/03/2005
• Est. Priority Date: 04/28/2004
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Tomioka, Kentaro, Hata, Yukihiko
• Granted Patent: US 7,215,546 B2
• Time in Patent Office: Days
• US Class Current: 60/649
• CPC Class Codes: F04D 29/588 cooling or heating the machine F04D29/5886, F04D29/5893 take precedence
• CPC Class Codes: G06F 1/203 for portable computers, e.g. for laptops
• CPC Class Codes: G06F 2200/201 Cooling arrangements using cooling fluid
• CPC Class Codes: H01L 23/473 by flowing liquids H01L23/4332, H01L23/4338 take precedence
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

The present invention provides a cooling pump, an electronic apparatus, and a cooling system in which positioning between a heat generating unit and a cooling pump can be achieved easily. The cooling pump according to the invention includes: a rotor having a disk-shaped member fixed to a revolving shaft, impellers for pressurizing liquid coolant provided on the disk-shaped member, a plurality of permanent magnets disposed into a ring shape disposed on and fixed to the disk-shaped member; a case including a pump chamber for rotatably accommodating rotor, an inlet port and a discharge port for the liquid coolant, and a heat receiving portion for the a heat generating unit which corresponds to part of the side wall of the pump chamber; a cover that closes the case in a liquid-tight manner and is formed with a recess, a stator stored in the recess of the cover for generating revolving magnetic field by a plurality of electromagnets and providing torque about the revolving shaft to the rotor; and a positioning member joined to the heat receiving portion for positioning with respect to the a heat generating unit.

Claims

1. A pump comprising:

a pump housing including

a pump chamber, and

a heat receiving portion to couple to a heat generating unit, the heat receiving portion has a recess corresponding to the heat generating unit;

an impeller provided in the pump chamber; and

a motor coupled to the impeller, the motor to rotate the impeller to pump a liquid coolant.

2. An electronic apparatus comprising:

a housing having a heat generating unit;

a heat dissipation portion in the housing to dissipate heat away from the heat generating unit;

a pump in the housing coupled to the heat generating unit, the pump to transfer a liquid coolant to the heat dissipation portion, the pump including

a pump housing having a pump chamber and a heat receiving portion thermally coupled to the heat generating unit, the heat receiving portion including a recess corresponding to the heat generating unit;

an impeller in the pump chamber, and

a motor coupled to the impeller, the motor to rotate the impeller; and

a circulation path coupled between the pump and the heat dissipation portion, the circulation path to circulate the liquid coolant between the pump and the heat dissipation portion to transfer heat away from the heat generating unit and into the heat dissipation portion.

3. A cooling system for an electronic device comprising:

a heat dissipation portion to dissipate heat out from a liquid coolant and away from a heat generating unit mounted in the electronic device;

a pump to transfer the coolant to the heat dissipation portion, the pump including

a pump housing having a pump chamber and a heat receiving portion to couple to the heat generating unit, the heat receiving portion including a recess corresponding to the heat generating unit;

an impeller in the pump chamber, and

a motor coupled to the impeller, the motor to rotate the impeller in the pump chamber to pump the coolant;

a circulation path coupled between the pump and the heat dissipation portion, the circulation path to circulate the liquid coolant between the pump and the heat dissipation portion to transfer the heat of the heat generating unit to the heat dissipation portion through the coolant; and

an electric fan located adjacent to the heat dissipation portion, the electric fan to blow cooling air towards the heat dissipation portion.