| 摘要 |
<p>PURPOSE:To prevent adhesion of impurities regardless of the operation and the stoppage of a heat exchanger and contrive to improve the efficiency of the heat exchange, by a method wherein two units of revolving field generating devices are provided at the right and left outsides of a heat exchanger, and wires which penetrate heat transfer pipes are made to slide inner surfaces of heat transfer pipes. CONSTITUTION:Because a driving body 5 in a cylinder 26 for attaching a field element is attracted and furthermore is given the revolution power, when the advancing direction of a revolving field of the revolving field generating device is indicated as an arrow mark 33, the drivig body 5 revolutes along the inner wall of the cylinder 26 while rotating in the same direction with the center point 34 as the center, and the locus of the center point 34 describes a circle with the diameter of the difference D1 between the inner diameter of the cylinder 26 and the outer diameter of the driving body 5. But actually, because the driving body 5 is restricted the rotation, it carries out only revolution centering the center of the cylinder 26, and because the driving body 5-8 carry out revolution in the same direction, the first rod 17 and the second rod 18 connected together, and follower plates 19, 20 also carry out the same motion. When the follower plates 19, 20 move, wires 22 carry out circular motion at the condition contracting the inner walls of the heat transfer pipes 4 and always remove impurities.</p> |
