| 摘要 |
<p>A hygiene-maintaining device of an underpressure-activated valve (2) for a drinking receptacle. Whilst in position of use, the valve (2) encloses a downstream side of an outlet opening (12) in a partition (6) associated with the drinking receptacle. The partition (6) may be a wall portion of the drinking receptacle, or a wall portion of a cap (4) for the receptacle. The valve (2) comprises a movable operating member, a bracing element (24, 70) and a seal member (22) that, whilst in position of rest, seals off said partition opening (12). The operating member is connected to a suction chamber (50) within which an underpressure (P2) may be established in order to activate and move the operating member into a valve-opening position. Thereby, liquid may flow out via the partition opening (12) and further onwards through a liquid outlet path in the valve (2), the operating member being pressure-balanced against the ambient pressure (P1) of the drinking receptacle. The suction chamber (50) is connected to at least one activation opening (52) through which the underpressure (P2) in the chamber (50) may be established. The distinctive characteristic of the invention is that the suction chamber (50) is separated from said liquid outlet path through the valve (2), which fully or partially prevents liquid residues from entering into the suction chamber (50) so as to create subsequent unhygienic conditions therein.</p> |
