Thermostatic servo-motor, particularly for valves

Details Thermostatic servo-motor, particularly for valves Thermostatic servo-motor, particularly for valves

G - Physics

05

D

236/1

G05D 23/00 (2006.01) F03G 7/06 (2006.01) G05D 23/19 (2006.01)

Patent

CA 1233150

Abstract A thermal servo-motor, particularly for valves, comprises two operating elements (6,7) which act oppositely on an actuating bridge (25), are thermally insulated from each other, and each have a temperature- dependent filling, particularly bellows boxes with liquid-vapour filling or cartridges with a solid filling. Each operating element is associated with an electric heater (30, 31) which are operable at different heating power. In particular, a heating coil (30, 31) is placed on the periphery of an outer capsule (8,9) of the operating element (6, 7). This allows wide scope in designing the servo-motor. Fig. 1.

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