A funnel-shaped ultrasonic restraint device based on fluid medium
A technology of fluid medium and restraint device, applied in the direction of fluid using vibration, etc., can solve the problem of not being able to achieve sound matching well, achieve the effect of reducing the focus of sound energy and realizing the size of the sound source
Active Publication Date: 2020-04-14
SHAANXI NORMAL UNIV
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However, the ultrasonic horn is a solid variable-diameter solid, which is mostly used for ultrasonic welding, etc., and its frequency range is mostly tens of kHz, and it cannot be well matched with the target medium.
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[0025] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.
[0026] The invention is a funnel-shaped ultrasonic confinement device based on a fluid medium, which can gather ultrasonic waves to a small application area, and form a smaller sound source surface at the same resonance frequency by constraining and focusing the ultrasonic waves. Such as figure 1 with figure 2 As shown, it includes sequentially connecting conical waveguide 1 and cylindrical waveguide 2 coaxially arranged, and the conical waveguide 1 and cylindrical waveguide 2 are filled with fluid medium. The conical waveguide 1 achieves the functions of acoustic wave confinement and energy focusing, while the cylindrical waveguide 2 can form a stable plane wave and output it. The cylindrical waveguide 2 must meet the relationship between the cut-off frequency, the sound source frequency ...
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The invention provides a funnel-shaped ultrasonic confining device based on fluid media. The funnel-shaped ultrasonic confining device based on the fluid media comprises a conical waveguide pipe and acylindrical waveguide pipe sequentially connected coaxially, wherein the fluid media are filled in the conical waveguide pipe and the cylindrical waveguide pipe; the big end of the conical waveguidepipe contacts an ultrasonic transducer for producing an ultrasonic wave so as to be used for confining the ultrasonic wave and focusing energy; on end of the cylindrical waveguide pipe is connected with a small end of the conical waveguide pipe; and the other end of the cylindrical waveguide pipe contacts an action medium of the ultrasonic wave so as to form a plane wave and outputting the plane wave. The size of each waveguide pipe is much less than a traditional transducer with the same resonant frequency, so that the funnel-shaped ultrasonic confining device based on the fluid media is suitable for ultrasonic application with small size and high energy, and can be used for confining and focusing a sound wave.
Description
technical field [0001] The invention belongs to ultrasonic devices, relates to ultrasonic beam restraint, in particular to a funnel-shaped ultrasonic restraint device based on a fluid medium. Background technique [0002] Ultrasound is widely used in industrial testing and biomedicine and other fields. At present, the size of the ultrasonic transducer used is limited by its resonant frequency, and the acoustic wave radiation area is relatively large. In many cell experiments and animal experiments, the contact area between the ultrasonic probe and the target is required to be small enough. In the prior art, ultrasonic horns are used to constrain the ultrasonic waves, acting on a small contact area. However, the ultrasonic horn is a solid variable-diameter solid, which is mostly used for ultrasonic welding, etc., and its frequency range is mostly tens of kHz, and it cannot achieve good acoustic matching with the target medium. The material of the existing horn follows the ...
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IPC IPC(8): B06B3/02
CPCB06B3/02B06B2201/76
Inventor 郭建中雷极英尹冠军杨雪冰王春宁
Owner SHAANXI NORMAL UNIV