Refrigeration system including capacity modulation

Details Refrigeration system including capacity modulation Refrigeration system including capacity modulation

F - Mech Eng,Light,Heat,Weapons

25

B

230/35, 45/4

F25B 41/00 (2006.01) B60H 1/32 (2006.01) F04B 49/24 (2006.01) F25B 41/04 (2006.01)

Patent

CA 1284478

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 (18) is fed back to the suction chamber (106) of the compressor through the orifice (130) of a bypass valve (30). 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 (30) that meters the bypassed liquid refrigerant.

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