Patent ID: 9272893
Filing Date: 2016-03-01
CPC Classification: A47J,B67D

Claim Text:
1. A beverage forming apparatus comprising: a beverage forming station arranged to combine a liquid with a beverage material to form a beverage; a liquid supply arranged to provide liquid to the beverage forming station for forming the beverage, the liquid supply having at least first and second valves positioned in series for controlling flow of liquid from a liquid source to the liquid supply, and a liquid conditioner configured to condition the liquid; and a control circuit arranged to control the at least first and second valves to open and close to control flow of liquid to the liquid supply; wherein the first and second valves are positioned upstream of the liquid conditioner when viewed along a direction of flow of liquid from the liquid source towards the liquid conditioner, the liquid conditioner arranged to at least one of heat, cool and carbonate the liquid; wherein the liquid supply is arranged to receive liquid from the liquid source under pressure such that opening of the first and second valves allows liquid to flow into the liquid supply; wherein the control circuit includes a first sensor positioned between the first and second valves to detect a pressure of liquid in an intermediate conduit between the first and second valves, and a second sensor positioned downstream of the second valve to detect a pressure of liquid downstream of the second valve; and wherein the control circuit is arranged to detect that the first or second valve leaks when closed by comparing pressures sensed by the first and second sensors.