Title:
遠心式液体ポンプ装置
Document Type and Number:
Japanese Patent JP4694023
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a centrifugal liquid pump usually operated in a low power consumption state and provided with an automatic correcting function of improving rigidity when rigidity of the centrifugal liquid pump is reduced. SOLUTION: The centrifugal liquid pump device 1 is provided with a pump part 2 having an impeller 21 rotating inside a housing 20, a rotor 31 provided with a magnet 33 for attracting the impeller, an impeller rotational torque generating part 3 provided with a motor 34 for rotating the rotor 31, a pump device body 5 having an impeller position control part 4 provided with an electromagnet 41 attracting the impeller, and a controller 6. The controller 6 is provided with a motor rotational frequency monitoring function, a storing function of storing an impeller low rigidity rotational frequency range, and a floating position control function of moving a floating position of the impeller 21 to a rotor side when a motor rotational frequency is within the impeller low rigidity rotational frequency range.
Inventors:
Mitsutoshi Yaegashi
Takami Ozaki
Takami Ozaki
Application Number:
JP2001110012A
Publication Date:
June 01, 2011
Filing Date:
April 09, 2001
Export Citation:
Assignee:
Terumo Corporation
ntn corporation
ntn corporation
International Classes:
F04D13/02; A61M1/10; F04D15/00; F04D29/00
Domestic Patent References:
| JP2001041166A | ||||
| JP11076394A | ||||
| JP11244377A | ||||
| JP9206374A |
Attorney, Agent or Firm:
Shoichi Mukaiyama