| 摘要 |
PURPOSE:To automatically control a water temp. and a water level to desired values only by setting a desired water level and a desired water temp., by constituting the titled apparatus of a water level detector, a water temp. detector, an operation panel and a control means. CONSTITUTION:When the data of a water level of a desired water surface c' and a water temp. are inputted to the operation panel 9 of an operation means 7 and a control means 8, an ultrasonic signal (a) is emitted at constant intervals from the transmitter 5 provided to a ceiling and the reflected wave (b) of the ultrasonic signal (a) impinged to the water surface (c) and reflected therefrom reaches the receiver 6 provided to the ceiling. In the next step, an operation means 7 reads the time when the ultrasonic signal (a) was emitted from the transmitter 5 and the time when the receiver 6 received the reflected wave (b) and the water level of the present water surface (c) is detected by the time difference. The control means 8 compares the water level of the water surface (c) with the water level of the water surface c' inputted to the operation panel 9 and controls a water amount so as to obtain the water level of the desired water level c'. A temp. detector 11 detects the water temp. of the water surface C of water 14 at constant time intervals by the intensity of infrared rays (d). |
