Sensing refrigerant temperature in a thermostatic expansion valv

Details Sensing refrigerant temperature in a thermostatic expansion valv Sensing refrigerant temperature in a thermostatic expansion valv

1990-11-26

1992-03-31

Yasich, Daniel M.

Thermal measuring and testing

Temperature measurement

Combined with diverse art device

62125, 7320419, 374183, G01F 168, G01K 1302

Patent

active

051002450

ABSTRACT:
A mechanical refrigerant thermal expansion valve has a sensing port sealed with a cupped shaped closure received therein and sealed about the cup rim. A cover assembly is removably 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.

REFERENCES:
patent: 3592059 (1971-07-01), Chilton
patent: 4416553 (1983-11-01), Huebscher
patent: 4453835 (1984-06-01), Clawson et al.
patent: 4523435 (1985-06-01), Lord
patent: 4637220 (1987-01-01), Sakano
patent: 5006044 (1991-04-01), Walker et al.

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