Thermostatic expansion valve with integral electrically operated

Details Thermostatic expansion valve with integral electrically operated Thermostatic expansion valve with integral electrically operated

1997-10-03

1999-11-09

Tapolcai, William E.

Automatic temperature and humidity regulation

Thermostatic

With pressure control

62225, F25B 4104

Patent

active

059797800

ABSTRACT:
A mechanical thermostatic refrigerant expansion valve assembly with an electrically operated shut-off in the inlet to the valve body. Preferably, the electrical operator is a solenoid attached to the valve body on the end opposite the mechanical thermal responsive valve actuator so as to minimize the changes in the manufacturing of an existing valve body. The solenoid armature moves a secondary valving member spring biased to shut off flow in the valve inlet.

REFERENCES:
patent: 4646532 (1987-03-01), Nose
patent: 4926652 (1990-05-01), Kitamoto
patent: 5588590 (1996-12-01), Sakakibara et al.
patent: 5826438 (1998-10-01), Ohishi et al.

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