Multi-stage scroll compressor

Details Multi-stage scroll compressor Multi-stage scroll compressor

1999-01-11

2000-04-18

Denion, Thomas

Rotary expansible chamber devices

Multistage

418 6, 418 552, 418 15, F01C 130

Patent

active

060507926

ABSTRACT:
A scroll is provided which can be operated as either a vacuum pump, a low pressure compressor or a high pressure compressor. The scroll includes a housing, a fixed scroll plate having a continuous fixed involute wrap and an orbiting scroll plate having a continuous orbiting involute wrap. The wraps are of constant width and pitch. The fixed and orbiting scroll plates are mounted in the housing with their involute wraps extending toward each other to define a series of chambers. The fixed involute wrap and orbiting involute wrap each have at least a first section of one height and a second section of a second different height. Additionally, the scroll includes a first port proximate a peripheral edge of the housing, a second port proximate the center of the housing, and at least one mid-port; the mid-port being located proximate the change in height between the first and second sections of the involute wraps.

REFERENCES:
patent: 4157234 (1979-06-01), Weaver et al.
patent: 4457674 (1984-07-01), Kawano et al.
patent: 4477238 (1984-10-01), Terauchi
patent: 5836752 (1998-11-01), Calhoun et al.
patent: 5857844 (1999-12-01), Lifson et al.
patent: 5873711 (1999-02-01), Lifson
patent: 5951268 (1999-09-01), Pottier et al.

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