| 摘要 |
PROBLEM TO BE SOLVED: To accurately clean up foul of dishes while allowing the feeding of a treating agent at a specified timing with a simple structure. SOLUTION: A container-shaped detergent feeding part is arranged above a washing tank. A detergent is housed in the detergent feeding part and when washing water enters from above, the detergent housed spills out to be fed into the washing tank. At this point, when a prewashing operation course is selected, a control circuit operates a washing pump to inject washing water into a washing tank. In this operation, the control circuit operates the washing pump at a lower speed (2,000 rpm) in the number of revolutions than that in the washing process so that the injection force of the washing water from an injection arm is made so weak as to prevent the washing water from infiltrating into the detergent housing part. In the washing process, the washing pump is operated at the normal number of revolutions (3,000 rpm) to allow the entry of a large amount of the washing water into the detergent housing part, thereby feeding the detergent into the washing tank.
|
