Refrigerant expansion device

Details Refrigerant expansion device Refrigerant expansion device

1982-08-09

1984-02-07

Capossela, Ronald C.

Refrigeration

Refrigeration producer

Evaporator, e.g., heat exchanger

137468, 138 45, 236 93R, 236101R, 236103, 251118, F25B 4106

Patent

active

044295529

ABSTRACT:
A refrigerant expansion device for use in a vapor compression refrigeration system is disclosed. The device has a body portion with a bore extending therethrough. At least that portion of the body portion which forms the bore walls is made of a shape memory alloy which undergoes a metallurgical transformation at a predetermined transformation temperature to change the bore size of the device in response to the temperature of refrigerant flowing through the device. In this manner, the bore size of the device is adjusted in response to different operating conditions of the refrigeration system.

REFERENCES:
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patent: 2319498 (1943-05-01), Gerard
patent: 2363140 (1944-11-01), Persons
patent: 2418671 (1947-04-01), Schweller
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patent: 4262844 (1981-04-01), Sekiya
patent: 4345234 (1982-08-01), Reich

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