| 摘要 |
PURPOSE:To prevent contamination with microorganisms of the liquid in an inner container at the time of liquid supply and the deterioration of liquid flavor due to oxidation by a method wherein a precision filter membrane and an open/close valve are provided along a liquid supply passage in a liquid-tight communication with a liquid outlet opening of the inner container. CONSTITUTION:A knob 25c on the bottom plate 25b of an operating housing 22 is screwed to push up the bottom plate 25b in order to compress a spring 25a between the bottom plate 25b and a receiving plate 31 and, by the spring 25a, the receiving plate 31 is forced up. In this way an inner container 24 is compressed to press the liquid therein. When a piston 40 of an open/close valve 29 is pushed down, the liquid is made to flow from the inner container 24 through a fluid outlet opening 23, a precision filter membrane 28, a through hole 36, a liquid suction opening 27, a cylinder 37, a liquid supply passage A of a pour out pipe 38 as shown by alternate long and short dash line and finally through a supply opening 26 thereof to outside. When the piston 40 is released from the pressing action, the liquid supply passage A is closed, the liquid is held therein and the liquid supply is stopped. |
