Inducer equipment for a pump having large induction capacity
US6065929A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1998 |
| Grant date | May 23, 2000 |
| Priority date | — |
| Expiry date | Jul 2, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/669
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Inducer equipment adapted to a pump having large induction capacity which cludes a case surrounding an inducer rotor having a plurality of blades leaving clearance relative to the case. The clearance between the peripheral portions of the blades and the case is of an increased value greater than the value of the normal clearance over a zone which extends both into a cylindrical first portion of the inside wall of the case upstream from the inducer rotor and into a portion of the inside wall of the case adjacent to the cylindrical first portion and overlapping an upstream portion of the inducer rotor over a distance from the leading edges of the blades of the inducer rotor. The ratio between the clearance of increased value and the clearance of normal value is advantageously greater than 10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.