Abstract:
An ultrasonic cleaning apparatus comprising: a tank for in use receiving a cleaning liquid and an item to be cleaned; a plurality of transducers arranged, when driven, to direct ultrasonic pressure waves into the tank; and a controller arranged in use to drive the transducers. First and second transducers from the plurality of transducers are arranged in use to direct ultrasonic pressure waves into an overlapping volume; and the controller is arranged in use to drive the first and second transducers to produce ultrasonic pressure waves at different frequencies from each other. The controller is arranged to in use produce first and second drive signals for the transducers using first and second frequency generators to each switch between primary and secondary operation, with the sequential switching taking place to cause different combinations of primary and secondary operation for the first and second frequency generators to occur over time.
Abstract:
PROBLEM TO BE SOLVED: To provide a means enabling an effective removal of particles adhered to a surface of a glass substrate, organic contaminants or the like without damaging or breaking the surface. SOLUTION: An ultrasonic cleansing apparatus 10 ultrasonic-cleansing smudge adhered to the surface 14A of the glass substrate 14 with a cleaning liquid to which an ultrasonic wave is applied comprises a cleaning tank 12 retaining the cleaning liquid 11, a support stand 16 supporting the glass substrate 14 in the cleaning liquid 11, an ultrasonic generating means 20 converging a first ultrasonic wave of frequency 1-10 MHz and a second ultrasonic wave of frequency one-half or less the first ultrasonic wave alternatively toward the glass substrate 14, a converging position adjusting means 22 adjusting a distance from a converging position P to converge to the surface 14A of the glass substrate 14, and a moving means 24 to move the support stand 16 such that the effect of the ultrasonic wave by the ultrasonic generating means 20 may spread over the surface of a material to be washed all over. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
A method for operating an ultrasound device (1) is proposed, which ultrasound device (1) comprises at least one ultrasound oscillator (3) and at least one ultrasound generator (2), which ultrasound oscillator (3) is prompted to oscillate by the ultrasound generator (2), which method is distinguished in that during operation of the ultrasound device (1) a temperature (T) of the ultrasound oscillator (3) is ascertained, and in that the ascertained temperature (T) is taken as a basis for modifying a power delivered by the ultrasound generator (2) to the ultrasound oscillator (3), to which end an actual variable (IL, ILS) and/or a setpoint variable (SL) for a control loop of the ultrasound generator (2) is/are altered in said control loop. In addition, a regulatory circuit (6) for an ultrasound device (1) and also an ultrasound device (1) are proposed which are suitable for carrying out the method.