Refrigeration system including capacity modulation

Details Refrigeration system including capacity modulation Refrigeration system including capacity modulation

1986-05-27

1987-09-22

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

62197, F25B 4100

Patent

active

046946608

ABSTRACT:
A refrigeration system adapted particularly for a vehicle air conditioning system and including a capacity modulation mechanism. A portion of the liquid refrigerant at the outlet of the condenser is fed back to the suction chamber of the compressor through the orifice of a bypass valve. The valve is mounted on the compressor and is responsive to suction chamber pressure. As the evaporator temperature decreases, suction chamber pressure also decreases thereby opening the valve to meter a small amount of bypassed liquid refrigerant into the suction chamber of the compressor. A portion of the hot discharge gas may also be bypassed back into the suction chamber through the same valve that meters the bypassed liquid refrigerant.

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Ashrae Systems Handbook, pp. 24.25 & 24.26.

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