Spiral compressor, useful in particular to generate compressed air for rail vehicles
US6062833A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1998 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | Jan 30, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01C17/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A preferably totally oil-free spiral compressor (1) with a high suction volume flows and a high compression ratio, is useful in particular to generate compressed air for rail vehicles. The compressor includes two spirals arranged on one side only, and includes measures to exactly guide both spirals relative to each other. For that purpose, a compression crown (15) is connected to and axially spaced from a first one of the spirals (7), and the second spiral (9) is positively guidedly driven within the compression crown (15) by a positive guidance arrangement. The positive guidance arrangement includes support rollers (17) that extend axially from the second spiral toward the compression crown and that are engaged and constrained to roll in bores (19) let into the compression crown (15) and shaped as guiding rings. By these measures, both spirals carry out orbital movements with respect to each other, as a result of the offset of their axes and under the positive guidance provided by the support rollers that roll in the bores. Also, to counteract axial forces exerted by the spirals, pressure chambers (35) are provided between the compression crown and the second spiral, to exert a co…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.