| 摘要 |
<p>PURPOSE:To irradiate a bathing person with infrared rays from the start of taking a bath and to perform positive irradiation during taking a bath by conducting an infrared heater up to the suitable temperature for taking a bath prior to the bathing and increasing the amount of ventilation of the bathroom once the heater is turned off while taking a bath. CONSTITUTION:The bathing temperature is set to a desired value T by a setter 9 and possible bathing temperature is set to T1 by a setter 8 prior to take a bath. At this time, the bathing temperature is lower than T1 and T, so the output voltage of a temperature sensor is high and the outputs of comparators 10 and 11 attain to H-level; and no person to take a bath is in the bathroom, so a contact 12 is broken, the outputs of NAND gates 15 and 16 attains to H-level, and a transistor TR19 and an SCR3 are on while a TR20 is off. The far infrared heater 1, therefore, generates heat and the temperature in the bathroom attains to the temperature T1, the person to take a bath enters the bathroom and the contact 12 is made, but the heater 2 is turned on; when the bathroom temperature attains to T, the TR19 turns off the conduction heater 1. At this time, the TR20 and SCR6 turn on to operate a ventilation fan 4, and the temperature in the bathroom is lowered speedily by dT to irradiate the person taking a bath with infrared rays again.</p> |
