Apparatus for preparing hot beverages with a boiler and an...

Details Apparatus for preparing hot beverages with a boiler and an... Apparatus for preparing hot beverages with a boiler and an...

A - Human Necessities

47

J

A47J 31/40 (2006.01) A47J 31/44 (2006.01) A47J 31/54 (2006.01) A47J 31/60 (2006.01) F24H 9/00 (2006.01)

Patent

CA 2430207

An apparatus for preparing hot beverages includes a boiler and a device for inhibiting scale. That device comprises at least one ultrasound transmitter located at the boiler, inside the boiler or in the region of the boiler. The ultrasound transmitter is operatively coupled to the boiler and excites it to oscillate with its natural frequency. In a preferred embodiment, an ultra- sound receiver and an amplifier is provided whose input is con- nected to the ultrasound receiver and whose output is connected to the ultrasound transmitter. The advantage of the invention is that the boiler always oscillates with its natural frequency, so that the sound energy is optimally used and can be kept lower than it would be for the same effect without resonance.

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