| 摘要 |
PROBLEM TO BE SOLVED: To suppress bad effects of ultrasonic vibration on attachments. SOLUTION: An ultrasonic oscillator 37 is installed at an eccentric position in one side in the bottom part 12a of a washing tank 12, so that a space S which is not opposed to the ultrasonic oscillator 37 in the aperture direction is formed in the washing tank 12. An attachment comprising a water level sensor 34, a temperature sensor 36, and a sheathed heater (a heater) 35 is installed in the space S. |
