| 摘要 |
<p>u The unit comprises a cup-shaped rotary deflector which communicates with the outlet opening in the tool housing and which includes at least one axial opening and a radially-oriented opening located within a given first radial interval around the deflector periphery. A fixed segment piece is placed inside the deflector and includes a radially-oriented opening extending over a given second radial interval which is greater than the first interval. The segment piece also includes an axial outlet port. The deflector can be rotated so that the radial openings in the deflector and segment piece coincide, allowing air to flow outwards in the radial direction, or so that the radial opening in the deflector and the outlet port in the segment piece are aligned, allowing air to flow outwards in the axial direction.</p> |
