Constraint surface sound wave focalizer

Abstract

The invention provides a constraint surface sound wave focalizer, which comprises a main body with extended length; the main body is provided with a first main body with equal section or unequal section and a second main body integrally and fixedly connected to one end of the first main body along the length direction; the second main body is gradually contracted in radial direction from one end connected to the first main body to the other end of the second main body; the focalizer further comprises a sound wave transmission channel which is internally concaved to form on the outer peripheralfaces of the first main body and the second main body and penetrated from one end of the main body to the other end. The constraint surface sound wave focalizer can effectively focalize the constraint surface sound wave and isolate the dependence on the manufacturing material of the focalizer; the focalizer has good application prospect.

Description

technical field [0001] The invention relates to the technical field of supermaterial structure preparation, in particular to a pseudosurface acoustic wave focuser used for acoustic wave focusing treatment. Background technique [0002] As a ubiquitous mechanical wave, sound waves can be used in many different fields such as sonic therapy, sonic welding, sonic pulverization, emulsification, and sonic catalysis and atomization. [0003] In the application of sound waves, it is often necessary to focus the sound waves first to increase their energy density and play their role. Existing conventional acoustic wave focusing structures are generally based on the Huygens principle, and achieve acoustic wave focusing in a manner similar to optical lenses. Taking the focusing of ultrasonic waves in water as an example, current acoustic wave lenses are generally made of low-density metals such as aluminum, and shaped into a concave lens shape. Since the propagation speed of sound wav...

AI Technical Summary

Problems solved by technology

[0006] For the acoustic wave focusing device realized by the structural vibration mode, although the focal spot obtained is small, the working frequency of this device is very dependent on the material of the device. For different application requirements, such as different working fluids, it is necessary to completely Redesign of the device, which can significantly increase the cost of the application

On the other hand, in actual use, in the acoustic wave focusing device using the structural vibration mode, the deviation of the material properties of the material from the ideal value is likely to cause a large error in the operating frequency

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