Liquid pressure amplification with bypass

F - Mech Eng,Light,Heat,Weapons – 25 – B

Patent

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Details

F25B 1/00 (2006.01) F24F 3/00 (2006.01) F25B 41/00 (2006.01) F25B 49/02 (2006.01)

Patent

CA 2135870

Liquid pressure amplification with Bypass is used in an air-conditioning or refrigeration system which includes a compressor, a condenser, a pump, an expansion valve, and an evaporator, interconnected by conduits in a closed refrigerant loop. A first conduit coupling an outlet of the compressor to an inlet to the condenser. A centrifugal pump is coupled to the condenser (or receiver) outlet for boosting the pressure of the condensed liquid refrigerant by a substantially constant increment. A second conduit transmits a first portion of the condensed liquid refrigerant from outlet of the pump through the expansion valve into the evaporator to effect cooling. A third conduit transmits a second portion of the condensed liquid refrigerant from the pump outlet into the condenser inlet, which cools the superheated vapor refrigerant entering the condenser, reducing head pressure. A bypass having a valve around is provided to direct refrigerant around the pump in the event the pump is idled while the compressor remains in operation.

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