Device and method for producing a frothed whitened beverage
The invention concerns a method for hygienically and automatically producing from a beverage dispensing device a frothed whitened beverage in a receptacle comprising upon the actuation of a command on the device the following operations controlled by a control unit of said device: —a. metering and delivering a pre-warming volume of heated water in a receptacle for prewarming a whitening food component already contained in the receptacle and forming a warmed liquid in said receptacle, —b. metering and delivering a frothing volume of heated water in the form of at least a pressurized jet directed toward the receptacle for frothing the warmed liquid, —c. producing and delivering in the receptacle a liquid mixture made of a second food component and a metered mixing volume of water. The invention also concerns a device for implementing said method.
1. Method for hygienically and automatically producing from a beverage dispensing device a frothed whitened beverage in a receptacle comprising upon the actuation of a command on the device the following operations controlled by a control unit of the device:
a. metering and delivering a volume of heated water into a receptacle for prewarming a liquid whitening food component that is contained in the receptacle and forming a warmed liquid in the receptacle,
b. metering and delivering a frothing volume of heated water in the form of at least a pressurized jet directed toward the receptacle for frothing the warmed liquid, and
c. producing and delivering into the receptacle a liquid mixture made of a second food component and a metered mixing volume of water.
2. Method according to claim 1 , wherein operations a. to c. are successively performed.
3. Method according to claim 1 , wherein the volume of heated water is greater than the frothing water volume.
4. Method according to claim 3 , wherein the ratio of the frothing water volume to the volume of heated water is between 1:4 and 1:8.
5. Method according to claim 1 , wherein the volume of heated water is heated in the device at a stabilized temperature of at least 85° C.
6. Method according to claim 1 , wherein the frothing water volume is delivered into the receptacle through a nozzle having a diameter of between 0.2 and 1 mm.
7. Method according to claim 1 , wherein in step c. the liquid mixture is produced by dosing a dry powder dose of a second food component from a reservoir in a mixing chamber and feeding into the mixing chamber the mixing water volume in the mixing chamber and delivering it through a chamber outlet of the mixing chamber.
8. Method according to claim 7 , wherein the mixing in the mixing chamber is performed only by means of at least one pressurized jet of water entering the mixing chamber.
9. Method according to claim 8 , wherein the pressurized jet in the mixing chamber is obtained by passing water through a nozzle having a diameter of between 0.3 and 0.8 mm.
10. Method according to claim 9 , wherein the volume of heated water is fed through the mixing chamber and via the chamber outlet into the receptacle.
11. Method according to claim 10 , wherein the volume of heated water and frothing water volume are successively delivered upon control of a valve that selectively directs the flow of heated water from the water heater to the mixing chamber for the volume of heated water and to the receptacle for the frothing water volume.