초록 ▼

A beverage dispensing system has a container from which beverage is to be dispensed by a gaseous mixture of air and carbon dioxide from passage 31. Air pressure for dispensing is derived from compressor 7. Carbon dioxide 11 is capable of communication with the container by way of a diaphragm valve 1

A beverage dispensing system has a container from which beverage is to be dispensed by a gaseous mixture of air and carbon dioxide from passage 31. Air pressure for dispensing is derived from compressor 7. Carbon dioxide 11 is capable of communication with the container by way of a diaphragm valve 14 which normally closes communication between the carbon dioxide source 11 and the container. Diaphragm 16 of valve 14 is responsive to variations in pressure derived from compressor 7 so that the valve 14 opens communication between the carbon dioxide source 11 and the container when mixed gases are demanded. The diaphragm 16 controls displacement of a spool 19 which determines the opening and closing of communication between the carbon dioxide 11 and the container. A chamber 17 communicates with the air line 9 while a chamber 18 communicates with the container and is capable of communication with the carbon dioxide 11 under control of the spool 19. When air pressure develops on demand in line 9, restrictors 30 and 34 cause a pressure differential to develop across the displacement of the diaphragm 16 and of the spool 19 to admit carbon dioxide to the container together with the air.

대표청구항 ▼

A beverage dispensing system comprising a container from which the beverage is to be dispensed by pressure of a gaseous mixture of carbon dioxide and a second gas comprising nitrogen; a source of said second gas which is to communicate under pressure and on demand with the container; a source of car

A beverage dispensing system comprising a container from which the beverage is to be dispensed by pressure of a gaseous mixture of carbon dioxide and a second gas comprising nitrogen; a source of said second gas which is to communicate under pressure and on demand with the container; a source of carbon dioxide under pressure which is capable of communication with the container by way of valve means, said valve means being responsive to gaseous pressure in the system whereby upon the gaseous mixture being demanded for dispensing, pressure means by which the second gas under pressure is supplied on demand causes the valve means to be actuated to open communication between the source of carbon dioxide and the container and upon the demand for the gaseous mixture ceasing the valve means closes communication between the source of carbon dioxide and the container, and wherein the development of pressure of said second gas in the system by said pressure means causes the valve means to be actuated.