Title:
PUMP
Document Type and Number:
Japanese Patent JP2005344563
Kind Code:
A
Abstract:
To provide a pump capable of reducing noise generated at a time of drive.
A pump housing 50 includes a pump chamber 57 and at least one communication openings 59, 60 opening to the pump chamber 57. A freely rotatable impeller 70 including a plurality of blades 73 are provided in the pump chamber 57. A motor including a plurality of phases 83 and rotating the impeller 70 is provided. All of number of communication openings 59, 60, number of blades 73, and number of phases 83 of the motor 80 are set to be prime numbers.
Inventors:
TOMIOKA KENTARO
KUNO KATSUMI
TAKAMATSU TOMONAO
KUNO KATSUMI
TAKAMATSU TOMONAO
Application Number:
JP2004163407A
Publication Date:
December 15, 2005
Filing Date:
June 01, 2004
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
F04D1/04; F04D5/00; F04D13/06; F04D29/22; F04D29/44; F04D29/58; F04D29/00; F04D29/66; (IPC1-7): F04D29/22; F04D29/00; F04D29/44; F04D29/58; F04D29/66
Attorney, Agent or Firm:
Takehiko Suzue
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Sadao Muramatsu
Ryo Hashimoto
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Sadao Muramatsu
Ryo Hashimoto
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