Scroll compressor and scroll-type refrigerator

Details Scroll compressor and scroll-type refrigerator Scroll compressor and scroll-type refrigerator

1990-10-22

1992-04-14

Wayner, William E.

Refrigeration

Refrigeration producer

Compressor-condenser-evaporator circuit

418 97, F25B 3100

Patent

active

051036525

ABSTRACT:
In a scroll compressor having a stationary scroll and a revolving scroll, and a refrigerator incorporating this scroll compressor, the stationary scroll has a gas suction hole formed in its radially outer portion, a gas discharge hole formed in its central portion, and gas injection holes and a liquid injection hole formed between the suction and discharge holes. The gas injection holes are formed in a radially outer portion of the stationary scroll, and the liquid injection hole are formed in a central portion of the stationary scroll. The refrigerator incorporates the scroll compressor, a condenser, decompressors and an evaporator to form a refrigerating circuit. The liquid injection hole of the scroll compressor is directly connected by piping to the outlet of the condenser, and the gas injection holes are connected by piping to the outlet of the condenser through one of the decompressors. Even though the compressor is a single-stage compressor having one compression unit and one electric motor unit, the reduction in the volumetric efficiency can be limited and the power necessary for compression during practical use is substantially the same as the power for the two-stage compression type. Consequently, the compressor of the invention has substantially the same compressor efficiency as the conventional two-stage compressor at evaporation temperatures of -45.degree. to -70.degree. C.

REFERENCES:
patent: 4648814 (1987-03-01), Shiibayashi
patent: 4748831 (1988-06-01), Shaw

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