Patent ID: 6915732

Claim:
A beverage dispensing apparatus comprising: a water supply; a concentrate supply; a mixing chamber for mixing water and the concentrate and dispensing the mixture; a pressure regulator connected to said water supply; a water heater connected downstream of said pressure regulator; a hot water inlet valve disposed in a hot water line between said pressure regulator and said mixing chamber for controlling flow of hot water to said mixing chamber; a hot water restriction disposed in the hot water line and having a first fixed orifice flow size; a cold water valve disposed in a cold water line between said pressure regulator and said mixing chamber for controlling flow of cold water to said mixing chamber; a cold water restriction disposed in the cold water line and having a second fixed orifice flow size; and a controller for controlling said concentrate supply and said hot and cold water valves to respectively supply concentrate, hot and cold water to said mixing chamber simultaneously to form a beverage mixture of predetermined proportions, wherein said hot and cold water restrictions meter the hot and cold water at a predetermined ratio regardless of the pressure of said water supply.