초록 ▼

In a post-mix beverage dispenser in which the concentrate is metered (or portioned) by a positive displacement metering pump having check valves, the improvement of a pressure control device for pressurizing the outlet line from the pump to prevent “blow-thru”of pressurized concentrate through the c

In a post-mix beverage dispenser in which the concentrate is metered (or portioned) by a positive displacement metering pump having check valves, the improvement of a pressure control device for pressurizing the outlet line from the pump to prevent “blow-thru”of pressurized concentrate through the check valves of the pump, whereby the dispenser can be inexpensively used with a pressurized concentrate source. In addition, a post-mix beverage dispensing system including such metering pump and pressure control device and also including a pressurized canister holding pliable 5+1 juice concentrate at a temperature below 32°F., and a heater for heating the concentrate in the concentrate line.

대표청구항 ▼

A method for dispensing a post-mix beverage comprising: (a) providing a positive displacement, concentrate metering pump having check valves for controlling the flow of concentrate therethrough from an inlet line connected to said pump to an outlet line connected to said pump; (b) connecting said in

A method for dispensing a post-mix beverage comprising: (a) providing a positive displacement, concentrate metering pump having check valves for controlling the flow of concentrate therethrough from an inlet line connected to said pump to an outlet line connected to said pump; (b) connecting said inlet line to a source of pressurized concentrate to be used in dispensing a beverage; and (c) pressurizing said outlet line of said pump to the pressure of said inlet line plus an additional pressure, to prevent said pressurized concentrate from blowing through said check valves, said pressurizing step comprising placing a valve in said outlet line, applying inlet line pressure to said valve in a direction urging it closed, applying outlet line pressure to said valve in a direction urging it open, and applying an additional biasing force against said valve in a direction urging said valve closed. A post-mix beverage dispenser apparatus comprising: (a) a water line connected to a mixing chamber having a dispensing nozzle; (b) a concentrate line connected to said mixing chamber; (c) a positive displacement, concentrate metering pump in said concentrate line and having an inlet concentrate line to said pump and an outlet concentrate line from said pump, and said pump having check valves to control the flow of concentrate therethrough; and (d) means for pressurizing the outlet line from said pump with the pressure of the inlet line to said pump plus an additional pressure, said pressurizing means including a valve in said outlet line, means for applying inlet line pressure to said valve urging it closed, means for applying outlet line pressure to said valve urging it open, and means for applying an additional biasing force against said valve urging it closed.