AUTOMATIC BEVERAGE FEEDING MACHINE DIRECTLY CONNECTED TO NITROGEN GAS GENERATOR

摘要

PROBLEM TO BE SOLVED: To prevent the reduction of tasting of a beverage material solution and the propagation of bacterium by using gaseous nitrogen as pressure gas for a syrup storing tank and using molecular sieve carbon as an adsorbent. SOLUTION: A syrup feeding gaseous nitrogen generator 1 directly connected to a beverage adjusting device is constituted of an air pump 102, an adsorbing cylinder 108 filled with molecular sieve carbon and nitrogen gas tanks 41, 42 connected thereto through a check-valve 4. The generator 1 is intermittently driven so as to be restarted at the lower limit pressure of the tank 41 in a fixed range and stop the operation at the upper limit. The restart of operation is started from a regeneration process for sucking gas from the adsorbing cylinder 108 for a prescribed time under the reduced pressure operation of the pump 102 and exhausting the gas to the outside of the system. Then an adsorbing process for switching the pump 102 to pressurized operation to feed pressure air into the cylinder 108 for a prescribed time and allowing generated nitrogen gas to flow into the tanks 41, 42 is executed. Thus the regeneration and adsorbing processes are alternately repeaarted, and when the pressure of the tank 41 reaches the upper limit, gas in the cylinder 108 is discharged and then the operation of the generator 1 is stopped.