Valves and valve actuation – Tube compressors – Pivoting tube contacting element
Patent
1992-10-30
1995-04-25
Walton, George L.
Valves and valve actuation
Tube compressors
Pivoting tube contacting element
25112911, 2512495, 2512505, F16K 3104, F16K 706, F16K 3153
Patent
active
054091942
ABSTRACT:
A method for controlling a valve including a direct current motor acting upon an aperture adjusting part (3) against the force of elastic means (11) biasing the aperture adjusting part towards a zero flow rest position, comprising the steps of: selecting a desired valve aperture; determining a time interval (T.sub.a) as a function of the desired valve aperture; supplying the motor with a first constant current of a sufficient value for rotating the motor, during the mentioned time interval; supplying the motor with a second constant low value current thereafter until a next valve aperture is selected, this low value current being sufficient to hold the motor in its position against the force of the elastic means.
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Astic Georges
Blanc Alain
Dejoux Didier
Girardin Denis
Vollot Jean
Crouzet Electromenager
Walton George L.
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