| 摘要 |
PROBLEM TO BE SOLVED: To provide an instantaneous hot-water supply type shower toilet with a control unit which makes a determination time for the determination of frequencies of an AC source shorter than ever before, and which enhances determination reliability and safety. SOLUTION: This instantaneous hot-water supply type shower toilet 1 comprises: a water supply pipeline 2; a flow control valve (3); a heating device (4) which is composed of a water temperature sensors (45 and 46) and an electric heater (41), and which is arranged midway through the water supply pipeline 2; and the control unit 5 which is provided with heater-temperature input portions (51 and 52), a frequency determination portion, a heating control portion and a flow control portion. The frequency determination portion comprises a zero-point detection circuit 53 for detecting a voltage zero point of the AC source, and a computing means (frequency computing logic portion 55) for obtaining a time interval of the detected voltage zero point and determining the frequencies F. The heating control portion (a temperature control logic portion 57 and a phase control circuit 54) performs control on the basis of the determined frequencies F. COPYRIGHT: (C)2008,JPO&INPIT
|
