METHOD AND APPARATUS FOR PRESSURE EQUALIZED DISPENSING OF A PRESSURIZED LIQUID IN A CONTAINER (FLAIR BEVERAGE VALVES)

摘要

A method for dosed dispensing of a pressurized liquid is presented. In exemplary embodiments of the present invention, the method includes dispensing a liquid in a container via a dispensing opening into a dispensing space, where a difference in pressure between the container and the dispensing space is equalized in stages by using an intermediate dosing chamber. In a first stage the pressure is equalized between the container and the dosing chamber, then a quantity of the liquid is dispensed from the container into the dosing chamber, maintaining the pressure equivalence between the container and the dosing chamber by pressure communication between them. Next, the dosing chamber is isolated both as to gaseous and liquid connection from the container. Then, in a second stage the pressure is equalized between the dosing chamber and the dispensing space, and the quantity of liquid in the dosing chamber is dispensed into the dispensing space as the pressure between the dosing chamber and the dispensing space is maintained equal. The method further includes providing the liquid in a first inner container of the container, and introducing a pressure equalizing medium into a second inner container, where the first and second inner containers adjoin each other at least with a deformable and/or displaceable side. The invention also relates to a dispensing device arranged to perform, inter alia, the disclosed method. In exemplary embodiments of the present invention a dispensing device can comprise a self-contained carbonated beverage dispenser that can be stored in a consumer's refrigerator, or can, for example, be self cooling.