Temperature switch
AssigneeE.G.O. Elektro-Gerate Blanc u. Fischer
InventorsGerhard Goessler, Eugen Wilde
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Abstract
A temperature switch for limiting the temperature of a glass ceramic plate against the radiation emanating from light and dark radiators has a sensor, which comprises a metallic sensor tube and an inner ceramic rod. Over the sensor is drawn a steatite tube, which on the one hand ensures the electrical insulation between the heaters and the glass ceramic plate and on the other so shields the radiation by reflection, absorption and thermal mass, that the sensor is given a temporary response delay and a greater switching hysteresis.
Claims20
A temperature switch for a radiant heating means having at least one radiation source for emitting radiation, said temperature switch comprising:
- at least one switching contact;
- at least one temperature sensor comprising temperature responsive bodies including a rod and a temperature sensor surrounding said rod, said rod and said sensor tube having different thermal expansion coefficients, and said sensor tube being made from a conductive material, and
- an electically insulating outer tube enveloping said sensor tube, wherein said outer tube is formed with a ceramic material for protecting at least one of said temperature responsive bodies against a substantial amount of said radiation source by at least one characteristic provided by a radiation absorbing characteristic and a radiation reflecting characteristic.
A temperature sensor for receiving thermally effective radiation from a radiating means, said temperature sensor comprising:
- at least one temperature responsive sensing body;
- a shield member separate from said at least one sensing body and at least partly shielding said at least one sensing body from said radiation, wherein said shield member is formed with a ceramic material for protecting said at least one sensing body against a substantial amount of the radiation by at least one characteristic provided by a radiation absorbing characteristic and a radiation reflecting characteristic.
Dependencies are inferred from the claim text.