Scroll compressor with clearance between scroll wraps

Details Scroll compressor with clearance between scroll wraps Scroll compressor with clearance between scroll wraps

1987-05-28

1988-08-16

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 57, F04C 1804

Patent

active

047640960

ABSTRACT:
A scroll compressor for use as a refrigerant compressor in an air conditioner or as an air compressor. An orbiting scroll member of the compressor has a drive shaft integral therewith and received in a bore formed in an eccentric bearing which in turn is received in an elongated hole formed in an end surface of a crankshaft such that the eccentric bearing is slidable in the elongated hole. The elongated hole and the eccentric bearing are so sized that the orbiting scroll wrap and a cooperating stationary scroll wrap do not contact with each other. A constant minimum gap is left between both scroll wraps regardless of any change in the centrifugal force acting on the orbiting scroll member due to a change in the operation speed. In consequence, vibration and noise due to contact between both scroll wraps are remarkably reduced and the efficiency of the compressor is improved appreciably.

REFERENCES:
patent: 3924977 (1975-12-01), McCullough
patent: 4082484 (1978-04-01), McCullough

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