| 摘要 |
PURPOSE:To save energy and to improve safety in an electric 'Kotatsu', by detecting the temperature in the 'Kotatsu' by a temperature sensor which is installed in an air passage whether it is within the predetermined range of temperature or in the fluctuant state, and by controlling the temperature by a controller provided in the outside. CONSTITUTION:A temperature sensor 5 detects the temperature in a 'Kotatsu' whether it keeps a constant temperature or is in the fluctuant state. A controller which is provided in the outside processes the detected temperature and controls to turn the power OFF if the temperature in the 'Kotatsu' keeps a constant a temperature for a predetermined time. This arrangement serves to save electric energy, because the 'Kotatsu' is not necessary to be held at high temperature using useless power when nobody is sitting at it to take warmth out of it. Besides it is safe to a fire hazard, as the power is cut automatically to lower the temperature in it.
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