Abstract: The invention is directed to a device for generating ultrasound oscillations. In order to be able to excite with the device oscillations in a vessel simultaneously and uniformly from several sides, the device includes a resonator which oscillates radially in several directions during operation of the device.

Abstract: An ultrasound system for the generation of low-frequency high-power ultrasound includes a resonator for transmitting the ultrasound to a medium. To safely handle the ultrasound system, the ultrasound system has a light source illuminating a workspace of the ultrasound system.

Abstract: The invention relates to a resonator for the distribution and partial transformation of longitudinal vibrations and to a method for treating at least one fluid by means of a resonator according to the invention. The resonator is designed for the distribution of longitudinal vibrations and the partial transformation thereof into longitudinal vibrations that are superimposed by vibrations oriented towards the centre of gravity or approximately towards the centre of gravity of a cross-sectional surface of at least one opening of the resonator. The resonator comprises a natural number of parallel elements of at least lambda/2 or a natural multiple thereof, at least one of the lambda/2 elements comprising at least one opening suitable for transmitting the transformed vibrations to a fluid located inside the opening.

Abstract: Method and device for changing the properties of at least one liquid medium, in which method the liquid medium is exposed in at least one container to vibrations in the low-frequency power ultrasonic range and, to regulate the flow speed of the liquid material in the container in which the liquid medium is present for ultrasonic irradiation and/or to regulate the internal pressure of the container, the cross-section inside a line upstream of an inlet of the container in the direction of flow and/or downstream of an outlet of the container in the direction of flow is varied by means of at least one pinch valve.

Abstract: The invention is directed to a device for generating ultrasound oscillations. In order to be able to excite with the device oscillations in a vessel simultaneously and uniformly from several sides, the device includes a resonator which oscillates radially in several directions during operation of the device.

Abstract: The invention relates to a method and device for producing an oscillatory motion of a mass, in particular of a tool, wherein the mass is mechanically connected to at least two clamping elements between said clamping elements in the direction of oscillation propagation and the mass (50) is clamped in by the two clamping elements (10, 20) under the application of pressing force (F), and at least the clamping elements are designed as components of a resonance system, and an excitation oscillation is introduced into the resonance system, the frequency of the excitation oscillation substantially corresponding to the resonance frequency of the resonance system so that the resonance system oscillates. The invention further relates to a method for processing solid or liquid material while using the method according to the invention in order to produce an oscillatory motion of a mass.

Abstract: The present invention relates to an apparatus for generating electromechanical composite high-frequency oscillations includes, with a composite high-frequency oscillation system having at least one oscillation-generating element and at least one bracing element for applying pressure to the oscillation-generating element, wherein the bracing element is positioned outside of the material cross-section of at least one oscillation-generating element.

Abstract: The invention relates to a device and a method for nebulizing flowable media by means of low-frequency high-energy ultrasound. According to the invention, the device comprises an ultrasound system (2) and at least one carrier element (1) that is positioned near or in direct contact with at least one part of the oscillating surface of the ultrasound system (2), the flowable medium (3) being fed to the ultrasound region by the carrier element (1).

Abstract: The invention relates to a method for the after-treatment of a vinegar obtained by fermentation. The method is characterized in that the vinegar is treated with ultrasound by means of an ultrasonic device, by taking into account the following parameters: amplitude 0.1 to 150 ?m frequency 10 to 200 kHz surface intensity of the ultrasonic treatment 0.001 to 200 W/cm2 power per ultrasonic device used 20 to 20000 W net energy input 0.01 to 2000 kWh/m3 volume-related power input 0.001 to 100 W/mL liquid pressure 0.1 to 50 bar, and temperature ?2 to 150° C. The ultrasonic treatment of the vinegar obtained by fermentation has an influence on the sensory, optical and microbial quality of the vinegar and influences the storability and effect thereof.

Abstract: The invention relates to a method and a device for introducing ultrasound into a flowable medium using a sonotrode, wherein the flowable medium is not in direct contact with the sonotrode. Disclosed is a method comprising the following steps: placing a film (8) on the sonotrode (4) in such a way that the contact force by means of which the film (8) is pressed on the sonotrode (4) is always so great that the film (8) follows the lifting motions of the sonotrode (4) in the corresponding frequency and amplitude; applying ultrasound power through the film (8) into the medium (2) and transmitting the wear phenomena onto the film (8).

Abstract: The invention relates to a device for coupling low-frequency high-power ultrasound resonators by a tolerance-compensating force-transmitting connection having at least one contact surface between the at least two resonators on or proximate to the oscillation maximum of the oscillation to be transmitted by the coupling for the purpose of transmitting low-frequency ultrasound power between the resonators coupled in this manner.

Abstract: The present invention refers to an ultrasonic device comprising an ultrasound transducer; and a disk-shaped metallic low-frequency ultrasound (NFLUS) resonator being mechanically connected with the ultrasound transducer on one side of the resonator; a container with an opening on its bottom side and being arranged on the other side of the disk-shaped resonator such that the opening is facing the disk-shaped resonator; an elastic sealing element arranged between the disk-shaped resonator and the container for sealing the container around the opening; and means for supplying a pressing force such that the container is tightened on the resonator during ultrasonication, but can be repeatedly disassembled and assembled after ultrasonication.

Abstract: The invention relates to a device for coupling low-frequency high-power ultrasound resonators by a tolerance-compensating force-transmitting connection having at least one contact surface between the at least two resonators on or proximate to the oscillation maximum of the oscillation to be transmitted by the coupling for the purpose of transmitting low-frequency ultrasound power between the resonators coupled in this manner.

Abstract: The present invention refers to an ultrasonic device comprising an ultrasound transducer; and a disk-shaped metallic low-frequency ultrasound (NFLUS) resonator being mechanically connected with the ultrasound transducer on one side of the resonator; a container with an opening on its bottom side and being arranged on the other side of the disk-shaped resonator such that the opening is facing the disk-shaped resonator; an elastic sealing element arranged between the disk-shaped resonator and the container for sealing the container around the opening; and means for supplying a pressing force such that the container is tightened on the resonator during ultrasonication, but can be can be repeatedly disassembled and assembled after ultrasonication.

Abstract: The invention relates to a method and devices for sonicating liquids with low frequency high energy ultrasound comprises a low frequency high energy ultrasound system having at least one sonotrode which projects into a reactor vessel through which the liquid passes via at least one inlet orifice and at least one outlet orifice. To avoid cavitation at the sonotrode, it is proposed that in a close region of the oscillation-transducing sonotrode surface within the reactor vessel a pressure/amplitude combination close to or above the pressure-amplitude characteristic line is generated at which considerably reduced or no cavitation occurs and in the adjacent region in the reactor vessel at least in a region and at least at times a pressure/amplitude combination is maintained below the pressure-amplitude characteristic line at which cavitation is generated.

Abstract: The invention relates to a method and a device for introducing ultrasound into a flowable medium using a sonotrode, wherein the flowable medium is not in direct contact with the sonotrode. Disclosed is a method comprising the following steps: placing a film (8) on the sonotrode (4) in such a way that the contact force by means of which the film (8) is pressed on the sonotrode (4) is always so great that the film (8) follows the lifting motions of the sonotrode (4) in the corresponding frequency and amplitude; applying ultrasound power through the film (8) into the medium (2) and transmitting the wear phenomena onto the film (8).

Abstract: The invention concerns an arrangement for ultrasound cleaning of several strandlike articles (4) traveling next to each other, such as, e.g., wires, profiles and pipes, by means of a liquid excited by ultrasound in a borehole (3), which is only slightly, i.e., around 5-50%, larger than the diameter of the article being cleaned, wherein the cleaning liquid is supplied to the boreholes (3) in such a way that it fills them completely.

Abstract: The invention concerns an arrangement for ultrasound cleaning of several strandlike articles (4) traveling next to each other, such as, e.g., wires, profiles and pipes, by means of a liquid excited by ultrasound in a borehole (3), which is only slightly, i.e., around 5-50%, larger than the diameter of the article being cleaned, wherein the cleaning liquid is supplied to the boreholes (3) in such a way that it fills them completely.