Rotary expansible chamber devices – Multistage
Patent
1992-08-28
1994-04-19
Vrablik, John J.
Rotary expansible chamber devices
Multistage
418 552, 418 60, F04C 1804, F04C 2300
Patent
active
053040473
ABSTRACT:
A scroll compressor has first, second and third scrolls. The second and third scrolls each have a spiral ridge on a flat plane and the first scroll has two spiral ridges on opposite sides of a flat plate. The second and third scrolls are arranged on both sides of the first scroll so that the spiral ridges of the opposed scrolls are meshed with each other. A lower-stage compression part is defined between the first and second scrolls and a higher-stage compression part is defined between the first and third scrolls. A suction port of the lower-stage compression part communicates with a suction passage of the compressor, a discharge port of the lower-stage compression part communicates with a suction port of the higher-stage compression part, and a discharge port of the higher-stage compression part communicates with a discharge passage of the compressor. Thus, a fluid on the suction passage is first sucked into the lower-stage compression part and compressed there to an intermediate pressure, then further compressed to a higher pressure at the higher-stage compression part, and finally discharged from the discharge port of the higher-stage compression part to the discharge passage.
REFERENCES:
patent: 4650405 (1987-03-01), Iwanami et al.
Daikin Industries Ltd.
Vrablik John J.
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