Method of assembling an expansion device for a refrigeration sys

Details Method of assembling an expansion device for a refrigeration sys Method of assembling an expansion device for a refrigeration sys

1995-02-27

1996-12-10

Cuda, Irene

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

29890054, B23P 1526

Patent

active

055818838

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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