Modulated electrically operated refrigerant expansion valve

Details Modulated electrically operated refrigerant expansion valve Modulated electrically operated refrigerant expansion valve

1988-04-29

1990-01-09

Rosenthal, Arnold

Valves and valve actuation

Electrically actuated valve

Having means to produce digital pulses

25112915, 251 65, F16K 3106

Patent

active

048922854

ABSTRACT:
A solenoid operated refrigerant expansion valve for providing control of refrigerant flow with a modulated electrical signal having a valve block with an armature guide post cantilevered therefrom with a tubular valve spool slidably received thereon and a cover thereover attached to the block which forms a valving chamber communicating with the inlet, the guide post has a cavity formed therein which communicates with the outlet and cross ports which are valved by movement of the spool. The free end of the guide post is registered in a recess formed in the cover. The cover has a controlled clearance over the valve member to provide viscous dampening thereof. A coil and pole frame are received over the cover and retained thereon.

REFERENCES:
patent: 3420496 (1969-01-01), Hallberg
patent: 3588039 (1971-06-01), Chelminski et al.
patent: 4056255 (1977-11-01), Lace
patent: 4286767 (1981-09-01), Hashimoto
patent: 4452424 (1984-06-01), Kawata
patent: 4504039 (1985-03-01), Akagi
patent: 4548047 (1985-10-01), Hayashi et al.

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