Title:
COOLING DEVICE
Document Type and Number:
Japanese Patent JP2011083095
Kind Code:
A
Abstract:
To provide a cooling device that reduces noise generated by a thrust ripple at the rotation of a rotor.
The cooling device includes a case 1, a stator 4 arranged in the case and having an insulator, a rotor 6 arranged at the external periphery of the stator 4 and having a fan blade, and a ring 5 arranged at the bottom side of the case 1 which is the external periphery of the insulator. By this arrangement, the noise generated by the thrust ripple at the rotation of the rotor 6 can be reduced.
Inventors:
YOSHIOKA KOJI
Application Number:
JP2009232357A
Publication Date:
April 21, 2011
Filing Date:
October 06, 2009
Export Citation:
Assignee:
PANASONIC CORP
International Classes:
H02K5/24; H05K7/20
Domestic Patent References:
| JPH1132460A | 1999-02-02 | |||
| JP2003348792A | 2003-12-05 | |||
| JP2006006100A | 2006-01-05 | |||
| JP2003009462A | 2003-01-10 | |||
| JP2008054365A | 2008-03-06 |
Attorney, Agent or Firm:
Hiroki Naito
Daisuke Nagano
Kentaro Fujii
Daisuke Nagano
Kentaro Fujii
Previous Patent: JP2011083094
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