| 摘要 |
A temperature sensor for a radiant electric heater includes switch housing (7), first expansion element (3) secured at one end to the housing, and second expansion element (5) mounted such that free ends of the two elements are immovable relative to each other, the two expansion elements having different thermal expansion coefficients. Snap switch (11) is disposed within the housing and includes switch arm (9) provided with electrical contact (15). Electrically conducting support (29) is provided with counter contact (31), and resilient assembly (25, 27) is disposed in the housing and acts between the electrically conducting support and the switch arm and between the electrically conducting support and the end of the second expansion element. The resilient assembly includes spring (27) restrained against lateral movement and electrically insulating spacer (25) positioned between the spring and one of the switch arm and the electrically conducting support so as to electrically isolate the switch arm and the support. |
