Beverage dispensing apparatus whereby oxygen-depleted air is pumped into a keg
AssigneeKoninklijke Philips Electronics N.V.
InventorJacob Smid
Life of this patent
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Abstract
A beverage dispensing apparatus for enclosing a keg (2) containing a beverage, comprising pumping means (7) for compressing air, and gas transport means (8) for transporting compressed gas from said pumping means (7) to the keg (2) for driving the beverage out of the keg (2) The beverage dispensing apparatus comprises a membrane (10) enveloping a space through which compressed air can pass, whereby oxygen can pass much faster through the membrane (10) than nitrogen can pass through the membrane (10), so that the percentage of oxygen in the gas that is transported to the keg (2) is reduced.
Claims5
A beverage dispensing apparatus for enclosing a keg (2) containing a beverage, comprising pumping means (7) for compressing air, and gas transport means (8) for transporting compressed gas from said pumping means (7) to the keg (2) for driving the beverage out of the keg (2), and means (3) for transporting the beverage from the keg (2) to a dispensing tap (1) for controlling the beverage output from the dispensing apparatus, characterized in that the beverage dispensing apparatus comprises a membrane (10) enveloping a space through which compressed air can pass, whereby the membrane has a higher permeability for oxygen than for nitrogen , so that the percentage of oxygen in the gas that is transported to the keg (2) is reduced.
Dependencies are inferred from the claim text.