Refrigeration – Refrigeration producer – Compressor-condenser-evaporator circuit
Patent
1996-09-05
1997-08-12
Tapolcai, William E.
Refrigeration
Refrigeration producer
Compressor-condenser-evaporator circuit
29890035, 138 44, F25B 4106
Patent
active
056553870
ABSTRACT:
A refrigerant expansion device for expanding refrigerant flowing within a refrigerant line from a condenser to an evaporator in a refrigeration system. The refrigerant expansion device includes a tubular restrictor having a cylindrical main portion and a tapered nozzle portion wherein the nozzle portion includes an outlet end having an orifice. A solder ring is disposed about the tapered nozzle portion and may be press fit onto the restrictor for secure engagement therewith. During the expansion device fabrication, the tubular restrictor is inserted into the refrigerant line to a predetermined position. The exterior of the refrigerant line is then heated at the predetermined position such that heat is transferred through the refrigerant line and melts the solder ring thereby brazing the restrictor to the refrigerant line at the predetermined position.
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patent: 5531287 (1996-07-01), Sherman
Fox Dallas C.
Matambo Thompson J.
Davis Mark A.
Roth Thomas J.
Tapolcai William E.
Whirlpool Corporation
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