Water supply controller for home electrical appliances

Abstract

Abstract PURPOSE:To operate a newly established timer circuit when the water supply command signal from a digital controller is generated and generate a signal to display an alarm and an abnormality when water level signal is not generated within the preset time. CONSTITUTION:When the assigned program input switch 1 to start the water supply stroke to the digital controller 2 turns on, the signal from the water level detector 3 is input to the digital controller 2 and determines whether or not water is supplied. When water level does not exceed the preset one, water supply is started. When the water supply signal W is generated, the clock signal cp is input to the one-second counter 5 of the timer 4 by the NAND gate of the water supply control circuit 10. The output of the one-second counter is input to the one-minute counter 6. For example, when the time is preset to six minutes, the signal X is output by the NAND gate 12 after the counter 6 counts up six minutes and externally gives an alarm to notify that water supply is disabled.

Inventors

• 👤 Osamu Imamura
• 👤 Naoya Fujita
• 👤 Hideyuki Hida
• 👤 Koichi Nozaki

Bibliographic Details