Patent Number: RE37,423

Title: Sensing refrigerant temperature in a thermostatic expansion valve

Abstract: A mechanical refrigerant thermal expansion valve has a sensing port scaled 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.

Inventors: Glennon; Thomas Francis (Darien, IL), Torrence; Robert James (Addison, IL)

Assignee: Eaton Corporation

International Classification: G05D 23/20 (20060101); G05D 23/13 (20060101); G05D 23/24 (20060101); G05D 23/01 (20060101); F25B 041/04 ()

Expiration Date: 10/30/2018