Temperature operated switch of a variable operating temperature

摘要

A temperature operated switch comprising a reed switch, permanent magnets temperature sensitive ferromagnetic materials and an auxiliary permanent magnet in which permanent magnets and temperature sensitive ferromagnetic materials is so disposed along the reed switch that they make a magnetic closed loop together with reeds of the reed switch and in which the auxiliary permanent magnet is rotatably disposed in the vicinity of a set of the permanent magnet and the temperature sensitive ferromagnetic material. The operating temperature of the switch is generally defined by the Curie point of the temperature sensitive ferromagnetic material, but can be fine controlled by adjusting the orientation of the rotatable auxiliary permanent magnet.