Method and apparatus for pressure equalized dispensing of a pressurized liquid in a container (flair beverage valves)

Abstract

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. First 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 gaseously and liquidly from the container. 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.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Dutch patent application NL 2002851 filed on May 7, 2009, which is hereby incorporated by reference. technical field [0003] The present invention relates to dispensing technology, and more particularly to methods and apparatus for dispensing pressurized liquids in containers to minimize or eliminate the loss of any gas or gases dissolved in the liquid. Background technique [0004] In the metered dispensing of liquids dissolved with other substances, such as gases, problems often arise due to the sudden release of dissolved substances when the liquid is being dispensed. For example, in the case of carbonated liquids such as beer or soft drinks, carbon dioxide leaves solution and is released in gaseous form, typically due to the pressure drop induced as the liquid flows out of the container. For purposes of illustration, it has been noted that a typical soda may have an internal ...

AI Technical Summary

Problems solved by technology

Since the solubility of a gas is proportional to the pressure, the solubility is significantly reduced

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