Ultrasonic levitation device

Abstract

The invention discloses an ultrasonic levitation device which comprises a transducer array, a concave spherical bracket, drivers, a controller and a direct current stabilized voltage supply, wherein the transducer array is arranged on the inner side of in the concave spherical bracket and acoustic beams generated by each transducer in the transducer array pass through the centre of sphere of the concave spherical bracket, each transducer in the transducer array is connected to one driver correspondingly, the drivers are fixed to the outer side of the concave spherical bracket, all the driversare connected to the controller, the direct current stabilized voltage supply is connected to the controller and all the drivers for providing direct current voltages to the controller and all the drivers, and the transducer array controlled by the controller changes the phases of the transducers continuously to generate a spiral-shaped spiral sound field. As the phases of the transducers are changed continuously to form the spiral-shaped spiral sound field, objects suspending at the center of the spiral-shaped spiral sound field is not limited by wavelength of sound waves, so that the objectcan be suspended stably.

Description

technical field [0001] The invention relates to a suspension device, in particular to an ultrasonic suspension device, which belongs to the field of ultrasonic array suspension. Background technique [0002] At present, most of the research on suspended objects in ultrasonic arrays at home and abroad is based on the principle of standing waves. Suspension devices are basically placed at the bottom of suspended objects, and accidental drop contamination of some liquid suspensions can also affect the performance of suspension devices in research applications. The size of objects that can be suspended by the ultrasonic levitation device using the principle of standing waves is limited by the wavelength of the sound wave, and its vertical structure is not conducive to the recovery and retesting of suspended particles. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an ultrasonic levitation device, and the levitated ...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the research on suspended objects in ultrasonic arrays at home and abroad is based on the principle of standing waves. The suspension device is basically placed at the bottom of the suspended object, and the accidental drop contamination of some liquid suspension will also affect the performance of the suspension device in research applications

The size of objects that can be suspended by the ultrasonic levitation device using the principle of standing waves is limited by the wavelength of the sound wave, and its vertical structure is not conducive to the recovery and retesting of suspended particles

Images