Back to results
US 4,286,134 AGranted
Temperature measuring arrangements for microwave ovens
AssigneeSanyo Electric Co., Ltd.
InventorsTakeshi Nakata, Takashi Watanabe, Kiyoshi Harada
Life of this patent
Estimating the term…
Abstract
An electronic oven equipped with an infrared detector element capable of detecting the temperature of food to be heated in a non-contact manner, in which a reflector converges the infrared rays from the heat in the oven cooking cavity onto the detector element, the reflector being pivotably mounted to cover a plate which has an inlet port to admit the converged rays from the reflector.
Claims16
An electronic oven comprising:
- a cavity,
- an infrared converging means having a reflective convergent surface and adapted to reflect and converge infrared rays radiated from food heated in said cavity,
- a supporting means for movably supporting said infrared converging means,
- an infrared detector element located in the vicinity of the point where infrared rays are converged by said infrared converging means, and adapted to convert the infrared rays into electrical signals,
- a plate disposed in front of said infrared detector element, an infrared entrance port being formed in said plate which said reflective convergent surface of said infrared converging means is adapted to cover, and
- a moving means for moving said infrared converging means to a first position as to reflect and converge infrared rays onto said infrared detector element when the temperature measurement operation is performed, and to a second position as to close said infrared entrace port when the temperature measurement operation is not performed.
3 more elements
An electronic oven comprising:
- a cavity,
- an infrared converging means having a reflective convergent surface and adapted to reflect and converge infrared rays radiated from food heated in said cavity,
- a supporting means for movably supporting said infrared converging means,
- an infrared detector element located in the vicinity of the point where infrared rays are converged by said infrared converging means, and adapted to convert infrared rays into electrical signals,
- a case for housing said infrared detector element and provided at the front thereof with a plate in which an infrared entrance port is formed and with which said infrared converging means is adapted to come in contact, and
- a moving means for moving said infrared converging means to a first position as to reflect and converge infrared rays onto said infrared detector element when the temperature measurement operation is performed, and to a second position as to come in contact with said plate to close said infrared entrance port when the temperature measurement operation is not performed.
3 more elements
Dependencies are inferred from the claim text.