| 摘要 |
<p>The invention applies to a method for the acceleration of an electromagnetic rapper (20), particularly for an electrostatic precipitator, which comprises a metal cylinder (25) as a hammer, an electrical coil (23) for lifting the metal cylinder (25) and electrical means for energising the electrical coil (28). For cleaning a surface the metal cylinder (25) is lifted by an initial electrical pulse (4) generated by the electrical means for energising the electrical coil (28). According to the invention the electrical means for energising the electrical coil (28) supply the electrical coil (23) with an additional electrical pulse (7) so that the metal cylinder (25) is accelerated when it has reached the maximum point (12) of its trajectory (9). The invention can be implemented in a technically less extensive and expensive way compared to mechanical devices applied for the acceleration of metal cylinders of rappers.</p> |
