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device for the production of a schaumschicht on a beverage
device for the production of a schaumschicht on a beverage
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机译:用于在饮料上生产肖姆许克的装置
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摘要
A method and apparatus for forming a head on a beverage using ultrasonic energy. The method and apparatus is concerned with subjecting a vessel containing a beverage to ultrasonic excitation for a pre-determined time and varying the frequency of the electrical signal to an ultrasonic device. Preferably the electrical signal is monitored to identify a peak in power, occurring at resonant frequency, to "lock on" to an optimum frequency for ultrasonic excitation.
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