CERAMIC ALLOY

摘要

A compartment 17 exposed to temperature fluctuations contains a fluid 18 vapourising under the action of a heater 19. The compartment 17 has a piston 15 displaceable by means of the volumetric change of the fluid. Displacement of the piston 15 is transmitted to an actuating member 25 in an inertia-reduced manner by means of flow of the fluid 18 through a pipe 22 into a bellows 24 and a spacer 30. The compartment 17 comprises a thermally-conductive portion 12 with cooling fins 20 and an insulating portion 13; the piston 15 is of insulating material.