| 摘要 |
The present invention relates to a reversing fan rotor blowing air always in the same direction irrespective of the sense of rotor rotation, comprising a disk (1), whose center is provided with an opening or a hub (10) for mounting on a driving shaft, whereby radial main vanes (2), exhibiting on the rotor inlet side leading edges (21) being followed up with left flanks (23) and right flanks (24) of the main vanes (2) passing over on the outlet side into trailing edges (22), project radially from the disk (1) front side relative to the center thereof. The invention is characterized in that both the left-hand flank (23) and the right-hand flank (24) of the main vane (2) are concave at the point of transition into the leading edge (21). At the same time, a radial auxiliary vane (3) that is shorter than the main vane (2) can be arranged in the intermediate channel space between adjacent main vanes (2) wherein the leading edge (31) of the radial auxiliary vane (3) is narrower if compared with the leading edge (21) of the main vane (2), whereby the flanks (33, 34) of the auxiliary vanes (3) are convex at least in the region of connection to the leading edge (31). |
