| 摘要 |
A cross flow blower has a plate guide which extends along a spiral curve the distances from which to the periphery of the rotor increase gradually from the beginning of the spiral at the point of the smallest distance between the guide sheet and the periphery of the rotor up to a maximum, this distance to the periphery of the rotor corresponding at the beginning of the spiral approximately to 10 - 30 percent of the radius of the rotor, then increasing after a central angle of about 60 DEG by a further 5 to 30 percent of the radius of the rotor, then again increasing after a central angle of about 30 DEG by about 10 - 30 percent of the radius of the rotor, and increasing thereafter after a further central angle of about 30 DEG by about 20 to 35 percent, whereafter it increases up to reaching the end of the spiral by about 20 to 50 percent of the radius of the rotor, the end of the spiral being reached after a central angle of about 140 to 190 DEG as seen from the beginning or starting point of the guide sheet, the part of this guide plate extending beyond the said - of the spiral either in direction of the tangent to the end of the spiral or along a curve the point of inflection of which lies in the area of the end of the spiral, the distance between the point of the vortex forming tongue lying next to the periphery of the rotor and the periphery of the rotor corresponding to about 5 to 15 percent of the outer diameter of the rotor, and the central angle on the suction side between the beginning or starting point of the spiral and the point of the vortex forming tongue closest to the periphery of the rotor being between 130 DEG - 180 DEG .
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