Scroll compressor with closed compression spaces having valves t

Details Scroll compressor with closed compression spaces having valves t Scroll compressor with closed compression spaces having valves t

1986-08-05

1987-12-22

Vrablik, John J.

Rotary expansible chamber devices

With delayed load

418 55, F04C 1804, F04C 2910

Patent

active

047144157

ABSTRACT:
A scroll compressor comprises an orbiting scroll and a fixed scroll, each of which includes a spiral wrap. These orbiting and fixed scrolls define between their wraps a plurality of close spaces at symmetrical positions. These closed spaces are moved toward the center of the scrolls by means of orbital motion of the orbiting scroll relative to the fixed scroll for reducing their capacities to compress fluid confined therein. Upon starting the compressor, some of the spaces which are in mid course of compressing and the other closed spaces which locate at the downstream side just before the communication with a discharge port, are communicated with each other through valves which open when pressure in the closed spaces at the upstream side is higher than that in the closed spaces at the downstream side, whereby a loading torque upon starting is decreased.

REFERENCES:
patent: 4389171 (1983-06-01), Eber et al.
patent: 4497615 (1985-02-01), Griffith

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