| 摘要 |
<p>The wheel is used in dust-arresting systems and in the systems of fire and emergency safety. It increases the values of the discharge and pressure coefficients, as well as the efficiency factor in case of low sound pressure. The runner wheel includes basic (3) and additional (4) blades. The average surface of the basic blade is described by a mathematical expression, whilst the additional balde is congruent to the basic one and is produced by trimming it to a preset radius. 1 claim, 4 figures</p> |
