Patent ID: 7918156

Claim:
A cold beverage dispenser comprising: a) a source of circulating cold liquid; b) a water input coupled to a water supply; c) a source of circulating cold liquid comprising a chiller, a reservoir for storing cold liquid, and a circulating pump; d) a liquid-to-liquid heat exchanger having an input coupled to the water input, an output for cooled water, and a heat-exchange circuit through which the circulating cold liquid from the source of circulating cold liquid circulates, such that water from the input is cooled by exchange with the cold liquid, and the cooled water exits from the output of the heat exchanger at a reduced temperature; e) a cold valve having an input coupled to the output of the heat exchanger, an output for dispensing cooled water, and a control input, such that the cold valve controls flow from the input to the output in response to a signal-from a controller; and f) a beverage dispensing output coupled to the output of the cold valve.