| 摘要 |
PURPOSE:To surely prevent hot water from overflowing from a dripper by keeping the quantity of hot water collecting in the dripper roughly constant at the time of each hot water pouring by controlling the driving of a pre-hot water pouring mechanism no that a pause time between hot water pouring and hot water pouring increases successively as the number of times of hot water pouring advances. CONSTITUTION:First of all, by operating a hot water pouring mode changeover switch 50, an automatic hot water pouring mode is selected. As an extraction of coffee advances, the quantity of hot water per time passing through the inside of a dripper 36 decreases gradually due to clogging of a filter 45, etc., but as the number of times of hot water pouring advances, the pause time T1-T4 between hot water pouring increases gradually, therefore, by an increase portion of its pause time, a decrease portion of the passing quantity per time of hot water comes to be offset. Accordingly, the quantity of hot water collecting in the dripper 36 at the time of each hot water pouring at a second time and thereafter is kept roughly constant irrespective of the number of times of its hot water pouring. Thereafter, it can be prevented that hot water overflows from the inside of the dripper 36. |
