| 摘要 |
<p>The machine has a pot shaped bearing housing (14) connected with a machine housing (12). A fan (24) is mounted in the machine housing for dust extraction or separation. The fan is designed as a double fan and includes fan blades (26) on both sides of a separation surface, where a set of fan blades serves for dust extraction, while another set of fan blades serves for motor cooling. The separation surface divides the bearing housing into two fan chambers (32, 34), and an opening (40) is provided in the bearing housing for exhausting of cooling air.</p> |
