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A chemical type CO2 gas generator for a carbonated drink dispenser, which while embodied in several different implementations, commonly includes a first and a second liquid reagent container with the second reagent container including a reaction chamber for generating a carbonating gas when the two

A chemical type CO2 gas generator for a carbonated drink dispenser, which while embodied in several different implementations, commonly includes a first and a second liquid reagent container with the second reagent container including a reaction chamber for generating a carbonating gas when the two reagents are mixed. The containers are coupled so that the first reagent transfers from the first container to the reaction chamber of the second container when the pressure of the generated gas falls below a predetermined value.

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Self-regulating gas generator apparatus for producing a carbonating gas utilized in a carbonated drink dispenser and which generates the gas by a chemical reaction comprising: first container means for holding a first chemical reagent utilized in generating a carbonating gas for the drink dispenser;

Self-regulating gas generator apparatus for producing a carbonating gas utilized in a carbonated drink dispenser and which generates the gas by a chemical reaction comprising: first container means for holding a first chemical reagent utilized in generating a carbonating gas for the drink dispenser; second container means for holding a second chemical reagent utilized in generating a carbonating gas for the drink dispenser, a reaction chamber integral with said second container means for generating a carbonating gas for the drink dispenser when said first and second reagents are mixed; said first and second container means respectively comprising a pressurized centralized inner chamber and an adjoining outer annular chamber located within a common housing, wherein pressure in the inner chamber is initially greater than the pressure in the outer chamber and wherein the pressure in the outer chamber increases due to gas generation therein, means coupled between said inner and outer chambers for controlling the transfer of said first reagent from said inner chamber to said outer chamber, said means for controlling the transfer of reagent between said inner and outer chambers comprising means responsive to a pressure differential between said chambers to enable reagent flow therebetween to effect gas generation when the pressure in said inner chamber is greater than the pressure in said outer chamber and the pressure in said outer chamber drops below a preset value and to inhibit reagent flow when the pressure in the outer chamber is equal to that of said inner chamber and further when the pressure in said outer chamber is greater than that of the inner chamber, discharge means for feeding the generated carbonating gas from said second container means to a drink dispenser, said common housing for said inner and outer chamber further including a generally flat base region constructed for mounting a support surface of the drink dispenser and including openings therein to the inner and outer chambers, and additionally including fluid coupling means intermediate said openings and said pressure responsive means and said discharge means.