Title:
【発明の名称】一体形遠心ポンプとモータ
Document Type and Number:
Japanese Patent JPH06502470
Kind Code:
A
Abstract:
An integrated centrifugal pump and motor is provided by an impeller disk which contains permanent magnets and functions as the rotor for a brushless DC motor. The rotor is supported by non-contacting radial bearings and is hydrodynamically balanced against any axial thrust so that there is no contact between rotating and stationary elements during operation. Since the impeller disk is also the motor rotor, there is no need for a shaft, in the ordinary sense, which would penetrate the case and, thus, require seals. The resulting pump is compact and can be operated electronically at variable speeds.
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Inventors:
Cooper, pole
Bluson lee jay
Bluson lee jay
Application Number:
JP51835291A
Publication Date:
March 17, 1994
Filing Date:
September 27, 1991
Export Citation:
Assignee:
Isogarsol Dresser Pump Company
International Classes:
F04D3/00; F04D13/02; F04D13/06; F04D29/04; F04D29/048; F04D29/18; (IPC1-7): F04D13/06; F04D13/02
Domestic Patent References:
| JPS62190894U | 1987-12-04 | |||
| JPH01271696A | 1989-10-30 | |||
| JPS6473194A | 1989-03-17 | |||
| JPH0299792A | 1990-04-11 | |||
| JPH02248688A | 1990-10-04 | |||
| JPS6284694U | 1987-05-29 |
Foreign References:
| US2700343A | 1955-01-25 |
Attorney, Agent or Firm:
Warren G. Simor