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Title:
FLUID PUMP, COOLING DEVICE AND ELECTRIC APPARATUS
Document Type and Number:
Japanese Patent JP2005282500
Kind Code:
A
Abstract:

To provide a fluid pump reducing noise and vibration.

A first pressure generation projection section 9 is provided at a position between a suction port 7 and a delivery port 8 on an inner bottom surface of a pump chamber 6. The first pressure generation projection section 9 is for generating pressure at a time of rotation of an impeller 21 and both side sections are formed in smooth slant surfaces 11, 12. Flow at a time of impingement of fluid on the pressure generation projection part 9 gets smooth by that and impact is softened. Consequently, vibration caused by impingement of fluid on the pressure generation projection part 9 can be reduced and noise accompanying the vibration can be reduced.


Inventors:
Seko, Katsuya
Ito, Kenichi
Application Number:
JP2004000099354
Publication Date:
October 13, 2005
Filing Date:
March 30, 2004
Export Citation:
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Assignee:
TOSHIBA CORP
International Classes:
F04B17/00; F04B17/03; F04B35/04; F04D5/00; F04D13/06; F04D23/00; F04D29/44; F04D29/66; (IPC1-7): F04D29/44; F04D13/06; F04D29/66
Domestic Patent References:
JPH08219072A
JP2002089477A
JP2001123978A
JPH1150990A
JP2003172286A
JPH05179941A
JP2003193993A
Attorney, Agent or Firm:
佐藤 強
小川 清