| 摘要 |
PURPOSE:To effectively reduce vibration due to unbalance and to reduce noise by providing a balance member rotated with a case. CONSTITUTION:A case having coffee powder stored in the interior and a filter portion 22 for extracting a coffee liquid in the outer peripheral portion is provided, and hot water is supplied to the interior of the case 11 by a hot water supply mechanism 27. The case 11 is rotated by a motor 7, whereby hot water is passed through the above coffee powder by rotational centrifugal force to be extracted as a coffee liquid from the filter portion 22. Futher, there is provided a balance member 29 adapted to rotate with the case 11 and balance the weight of the rotation system. Accordingly, even if there is a bias in the distribution of coffee powder in the case, the weight of the rotation system can be balanced as a whole by the balance member 29, so that vibration due to unbalance can be effectively reduced and noise can be reduced. |
