Valves and valve actuation – Heat or buoyancy motor actuated
Patent
1993-06-10
1994-06-07
Hepperle, Stephen M.
Valves and valve actuation
Heat or buoyancy motor actuated
60528, 60529, 137468, F16K 3102
Patent
active
053182685
ABSTRACT:
An electrically operated thermally responsive valve having a bimetal operator arm heated by an electrical resistance heater for deflection to move a resilient poppet between an open and closed position on a valve seat for controlling flow to the valve outlet port. The base or active portion of the bimetal arm is formed of a first bimetal material with linear deflection properties up to 700.degree. F. for valve operation. The outboard end or compensator portion of the bimetal arm is formed of a second bimetal material having linear deflection properties up to 300.degree. F. for ambient compensation, but very low deflection properties at valve heater temperatures in the range 300.degree. F.-700.degree. F. for minimizing overcompensation from heating of the outboard portion due to heat transfer from the active portion.
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Cox Donald W.
DeSalvo Thomas E.
Didandeh Hooshang
Toksoy Can M.
Eaton Corporation
Hepperle Stephen M.
Johnston R. A.
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