Title:
ELECTRIC PUMP
Document Type and Number:
WIPO Patent Application WO/2020/100690
Kind Code:
A1
Abstract:
An electric pump (1) is provided with a pump chamber (100a), and a motor (300). The pump chamber (100a) has: an inlet (101) for drawing in refrigerant; an outlet (102) for discharging the drawn-in refrigerant; an impeller (200) for guiding the refrigerant from the inlet to the outlet; and a driven magnet (240) attached to the impeller. The motor (300) is provided with a rotor (320), and a stator (310) positioned so as to face the rotor. The rotor includes a motor shaft (323) extending in the axial direction, a first bearing (327), and a driving magnet (325). The first bearing (327) is attached to one end of the motor shaft (323), and rotatably supports the motor shaft (323). The driving magnet (325) is attached, at one end of the motor shaft (323), at a position that is adjacent to the first bearing (327) and faces the driven magnet (240). The outer diameter of the driving magnet (325) is smaller than the outer diameter of the first bearing (327).
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Inventors:
KAMADA YASUSHI
Application Number:
PCT/JP2019/043524
Publication Date:
May 22, 2020
Filing Date:
November 06, 2019
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
F04D13/02; F04D13/06; H02K7/14
Domestic Patent References:
| WO2003074881A1 | 2003-09-12 |
Foreign References:
| JP2004150390A | 2004-05-27 | |||
| JP2005320954A | 2005-11-17 | |||
| JPH01142292A | 1989-06-05 | |||
| EP0291780A1 | 1988-11-23 | |||
| JPH07224785A | 1995-08-22 |
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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