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把磁流体应用于电动式扬声器上,就是在电动式扬声器的磁路气隙中,注入一种新颖的液态磁性材料——磁流体,构成磁流体扬声器。磁路气隙的强磁场使磁流体定位,并与音圈,夹板及场芯保持密切接触,使音圈的导线部分浸润在磁流休中,当音圈运动时,粘性的磁流体在磁隙中紧随着音圈在一定范围内运动,从而加强了对音圈的热传导,提供适当的阻尼和对音圈运动产生一个定心作用等,从而改善了扬声器的电声性能。十多年前,国外已开始把磁流体应用于扬声器上,并有实用的磁流体杨声器供应市场。国内近几年来也曾进行过一些研究,大部分是处于试验阶段,到目前为止,尚未见有商品化的磁流体扬声器。自85年初以来,我们着重对磁流体在低频扬声器上的应用进行了较深入的探索。
The magnetic fluid applied to the electric speaker, that is, in the magnetic gap in the electric speaker air gap, the injection of a new liquid magnetic material - magnetic fluid to form a magnetic fluid speaker. Strong magnetic field air gap magnetic field positioning of the magnetic fluid, and the voice coil, the splint and the field to maintain close contact with the voice coil part of the immersion in magnetic flow in the magnetic rest, when the voice coil movement, viscous magnetic fluid in the magnetic The gap follows the voice coil in a certain range of motion, thereby enhancing the voice coil of the heat conduction, to provide appropriate damping and the voice coil movement has a centering effect, thus improving the speaker’s electro-acoustic performance. More than a decade ago, foreign countries began to apply magnetic fluid to loudspeakers and have a practical supply of magnetic fluid loudspeakers. In recent years, some researches have been carried out in China, most of which are in the experimental phase. So far, no commercially available magnetic fluid speakers have been found. Since the beginning of the year of 85, we have focused on the application of magnetic fluid in subwoofers.