Compressor
US7229243B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2004 |
| Grant date | Jun 12, 2007 |
| Priority date | — |
| Expiry date | Aug 14, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S415/914
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A compressor for compressing a gas comprises an impeller wheel (1) mounted within a housing (2) defining an inlet and an outlet (6). The inlet comprises an outer tubular wall (7) extending away from the impeller wheel in an upstream direction and forming a gas intake portion (8) of the inlet, and an inner tubular wall (9) of diameter D extending away from the impeller wheel in an upstream direction within the outer tubular wall (7) and defining an inducer portion (10) of the inlet. An annular gas flow passage (11) is defined between the inner and outer tubular walls (9, 7) and has an upstream end and a downstream end separated by a length L1 measured along its axis. The upstream end of the annular passage (11) communicates with the intake or inducer portions of the inlet through at least one upstream aperture and at least one downstream aperture (13) communicates between a downstream portion of the annular flow passage (11) and the impeller. The inner tubular wall (9) has a length L2 extending upstream from the downstream aperture(s) (13). The length of the inner tubular wall (9) is such that L1/D>0.65 and/or L2/D>0.6.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.