Magnetically driven centrifugal pump and means providing cooling fluid flow
US4013384A · kind A · utility
89Cited by
8References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 7, 1975 |
| Grant date | Mar 22, 1977 |
| Priority date | — |
| Expiry date | Mar 7, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/586
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A magnetically driven centrifugal pump comprising an impeller rotatably supported in a casing by means of a hollow shaft; passage means including the through hole of said hollow shaft for conducting part of a fluid so as to cool said shaft; and an auxiliary pump for forcing the fluid through said passage means, thereby preventing the shaft from being thermally seized or damaged even when the discharge pressure of the pump suddenly drops.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.