Title:
PUMP DEVICE
Document Type and Number:
Japanese Patent JP3869625
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a pump device capable of reducing a thrust directional load of a rotor output shaft of a motor at suction time and self-priming process time.
SOLUTION: In this pump device having the motor 4 as a driving source and an impeller 1 being rotated by being connected to the rotor output shaft 41a of this motor 4 and transferring liquid by this rotation and receiving thrust in the shaft direction to the impeller 1 together with the rotor output shaft 41a according to rotation of this impeller 1, the magnetic center C2 in the shaft direction of a stator 42 of the motor 4 and the magnetic center C1 in the shaft direction of a rotor 41 of the motor 4 are arranged in a deviatory manner in the shaft direction so that the rotor 41 is pulled in the opposite direction of the thrust by magnetic attraction force.
Inventors:
Yuminobu Yumida
Application Number:
JP2000139347A
Publication Date:
January 17, 2007
Filing Date:
May 12, 2000
Export Citation:
Assignee:
Nidec Sankyo Co., Ltd.
International Classes:
F04D15/00; F04D13/08; (IPC1-7): F04D15/00
Domestic Patent References:
| JP2000130387A | ||||
| JP63052991U | ||||
| JP9317684A | ||||
| JP10184302A |
Attorney, Agent or Firm:
Iat International Patent Business Corporation