Sensing refrigerant temperature in a thermostatic expansion valve
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United States of America Patent
Stats
-
Jan 15, 1991
Grant Date -
N/A
app pub date -
Mar 19, 1990
filing date -
Mar 19, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mechanical refrigerant thermal expansion valve has a sensing port sealed with a cupped shape closure received therein and sealed about the cup rim. A cover assembly is removeably attached to the valve over the cup with a thermistor extending into the cup which is filled with thermally conductive grease for thermal conductivity between the cup and the thermistor. The cover assembly has an electrical connector provided thereon. The thermistor is preferably mounted on printed circuit board potted in the cover which may include electronic signal logic and power switching circuitry.
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