Patent ID: 9623383
Date: 2017-04-18
CPC Classifications: A23F,A23L,B01F

Claim:
1. A system for preparing and dispensing a nitrogen infused beverage, comprising: a bag-in-box beverage concentrate container; a first diaphragm pump controlling flow of a beverage concentrate through a beverage line from the bag-in-box container to a first flow controlling needle valve and from the first needle valve to a nitrogenated beverage liquid mixing point, wherein a first back-check valve is optionally present prior to the first flow controlling needle valve or after the flow controlling needle valve and prior to the nitrogenated beverage liquid mixing point; a second diaphragm pump controlling water flow through a water line from a water supply to a liquid/gas contactor membrane unit and from the contactor unit to a second flow controlling needle valve and from the second needle valve to the nitrogenated beverage liquid mixing point wherein a second back-check valve is optionally present prior to the second flow controlling needle valve or after the flow controlling needle valve and prior to the liquid mixing point; a controlled pressurized supply of a gas comprising at least 50% by weight nitrogen attached to the liquid/gas contactor membrane unit; the liquid/gas contactor membrane unit; a nitrogen infused beverage line from the nitrogenated beverage liquid mixing point to a beverage faucet of a faucet tower; wherein the beverage faucet is a slow release faucet such that the infused beverage in the nitrogen infused beverage line remains under pressure during dispense of the beverage from the faucet, and a nitrogen gas feed supply line from the controlled pressurized supply of gas to the liquid/gas contactor membrane unit comprises a check valve preventing liquid flow from the liquid/gas contactor membrane unit into the pressurized gas supply line.