Heater thermostat with an actuator

摘要

The thermostat (1) has a an adjusting drive (2) for adjusting movement of a valve (3) of a heater, and an electromagnetic actuator for controlling the adjusting drive. The drive has a movement storage device (5) for storing the movement generated by a movement generator (4) in a movement direction. An extension body (6) is provided as the movement generator, and is changed in its shape by expansion and/or shortening. Free ends (7) of the extension body co-operate with the movement storage device during reverse shape change of the extension body.