Refrigeration – Processes – Transferring heat between diverse function portions of...
Patent
1976-04-08
1977-04-26
Wayner, William E.
Refrigeration
Processes
Transferring heat between diverse function portions of...
62197, 62225, 62509, F25B 3904
Patent
active
040193373
ABSTRACT:
Refrigeration apparatus comprising a compressor, a condenser, an evaporator, a suction line connecting the evaporator to the intake of the compressor, and first and second capillary tubes for feeding refrigerant to the evaporator. Refrigerant flow control means is associated with said first capillary tube, a portion of the flow control means being disposed in heat exchange with the evaporator outlet. The flow control means includes a diverter conduit for a portion of the liquid refrigerant fed to the evaporator by said second capillary tube and affording heat exchange of said portion with refrigerant flowing from the condenser to the evaporator through said first capillary tube.
An increase in superheat sensed by the control means through its heat exchange relation with the evaporator outlet -- an indication of a starved evaporator -- will cause the control means to effect liquid refrigerant flow through the diverter conduit, where it will operate by way of the described heat exchange to subcool liquid refrigerant flowing through the capillary tube restrictor from the condenser to the evaporator, thereby increasing the refrigerant mass-flow rate and restoring the evaporator to its non-starved operating condition.
REFERENCES:
patent: 2393854 (1946-01-01), Carpenter
patent: 2794324 (1957-06-01), Zearfoss, Jr.
patent: 3285032 (1966-11-01), Vanderlee
Hargis, III Harry W.
Wayner William E.
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