| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an automatic beverage vending machine which can brew drink with many bubbles brewed by a high pressure and drink with few bubbles brewed by a low pressure by one brewing apparatus without changing the discharge pressure of a pump. <P>SOLUTION: The automatic beverage vending machine has a first pressure control valve 12a which adjust a supply pressure to the brewing apparatus 8 to a first pressure by returning part of drinking water discharged from the pump 12 to the pump 12 suction-side, and a second pressure control valve 12b which adjust the supply pressure to the brewing apparatus 8 the 2nd to a predetermined pressure lower than the first pressure by returning part of drinking water discharged from the pump 12 to the pump 12 suction-side, and the supply pressure to the brewing apparatus 8 is switched to the first pressure by the first pressure control valve 12a, or the second pressure by the second pressure control valve 12b. Thereby, the supply pressure to the brewing apparatus 8 can be switched to either the high-pressure or low-pressure without changing the discharge pressure of the pump 12. <P>COPYRIGHT: (C)2007,JPO&INPIT |
