Method for treating limescale deposits within water heaters inside beverage dispensing machines
AssigneeRHEAVENDORS SERVICES S.p.A
InventorLuca Doglioni Majer
Life of this patent
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Abstract
A method and an apparatus for detaching limescale deposits within a water heater of a beverage dispensing machine, by powering an ultrasonic generator discontinuously to scan frequencies within a range of 20 kHz to 100 kHz so as to induce ultrasonic vibrations. Advantageously the step of inducing ultrasonic vibrations is implemented discontinuously at high energy levels.
Claims9
A method of detaching limescale deposits from a beverage machine dispensing component of a beverage dispensing machine, the beverage dispensing machine component being selected from the group consisting of a water heater and a mixing chamber, the method comprising the steps of:
- memorizing a natural frequency of the water heater, in a memory means of a control unit;
- determining a frequency in a range of 20 kHz to 100 kHz inclusive;
- inducing ultrasonic vibrations at the determined frequency only if the determined frequency is other than equal to the memorized natural frequency of the water heater;
- selecting an increased or decreased frequency of an ultrasonic generator device if the determined frequency is equal to the memorized natural frequency of the water heater;
- inducing ultrasonic vibrations at the selected frequency to said beverage dispensing machine component or within water contained in the beverage dispensing machine component by powering the ultrasonic generator device for a preset time interval, yet controlling the ultrasonic generator device to avoid the natural frequency of the water heater by skipping the natural frequency of the water heater within the range of 20 kHz to 100 kHz inclusive during the inducing steps, and
- detaching said limescale deposits in response to the induced vibrations.
A method of detaching limescale deposits from a beverage dispensing machine component of a beverage dispensing machine, the beverage dispensing machine component being selected from the group consisting of a water heater and a mixing chamber, the method comprising the steps of:
- powering an ultrasonic generator device,
- memorizing a natural frequency of the water heater, in a memory means of a control unit;
- determining a frequency in a range of 20 kHz to 100 kHz inclusive;
- selecting an increased or decreased frequency of the ultrasonic generator device if the determined frequency is equal to the memorized natural frequency of the water heater;
- inducing ultrasonic vibrations at the determined frequency only if the determined frequency is other than equal to the memorized natural frequency of the water heater;
- inducing ultrasonic vibrations at the selected frequency to said beverage dispensing machine component or within water contained in the beverage dispensing machine component by powering the ultrasonic generator device for a preset time interval, yet controlling the ultrasonic generator device to avoid the natural frequency of the water heater by skipping the natural frequency of the water heater within the range of 20 kHz to 100 kHz inclusive during the inducing steps;
- and
- detaching said limescale deposits in response to the induced ultrasonic vibrations.
Dependencies are inferred from the claim text.