F - Mech Eng,Light,Heat,Weapons – 25 – B
Patent
F - Mech Eng,Light,Heat,Weapons
25
B
F25B 41/00 (2006.01) F25B 29/00 (2006.01) F25B 41/04 (2006.01) F25D 29/00 (2006.01)
Patent
CA 2061562
56,392 ABSTRACT OF THE DISCLOSURE A transport refrigeration system which includes a compressor, a condenser, a receiver, an evaporator, an accumulator, and a control valve having cooling and heating output ports which are alternatively connected to first or second refrigerant circuits to initiate cooling and heating cycles, respectively. The heating capacity of a commanded heating cycle is enhanced prior to switching to the heating cycle by connecting the outlet of the receiver to the second refrigerant circuit while maintain- ing the control valve cooling port active in the first refrigerant circuit for a predetermined time delay. This forces liquid refrigerant in the condenser to flow into the receiver and then into the second refrigerant circuit, making additional liquid refrigerant available to the heating cycle, which is initiated at the end of the predetermined time delay, without introducing liquid refrigerant directly into the accumulator.
Bereskin & Parr
Thermo King Corporation
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