モータ一体型内接歯車式ポンプ及び電子機器

Japanese Patent JP4272112

B2

The present invention aims to provide a motor-mounted internal gear pump that is small-sized, less expensive and has high reliability, while utilizing a function of an internal gear pump that is suitable for high head. A motor-mounted internal gear pump has a pump section (81) for sucking and discharging a liquid and a motor section (82) for driving the same. The pump section (81) has an internal rotor (1) having teeth formed around its outer periphery, an external rotor (2) having teeth formed around its inner periphery and a pump casing that accommodates both rotors (1, 2) and has a suction port (8) for sucking a liquid and a discharge port (10) for discharging a liquid. The motor section (82) has a can (6) that composes a part of the pump casing and formed of a non-magnetic material into a thin plate, a rotator arranged at the inside of the can (6) for driving the external rotor or the internal rotor; and a stator (12) arranged at the outside of the can for rotating the rotator.

Takamasa Kametani
Nakanishi Masato

JP2004155676A

June 03, 2009

May 26, 2004

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株式会社日立製作所

F04C2/10; F04C2/08; F04C14/08; F04C15/00; F04C15/06; H02K7/14; H02K11/00; H02K29/08

JP2003129966A
JP11210642A
JP2277983A
JP60081488A
JP11050971A
JP2000027769A
JP5270293A
JP2003214352A
JP6140782A

US3720987
US4981203
US20050168081
US20050220653
US4601348
US6313990
US6537032
US6599110
US20030173440

Polaire Patent Business Corporation
Katsuo Ogawa
Kyosuke Tanaka
Takashi Sasaki

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