| 摘要 |
<p>PURPOSE:To form the most effective air flow to rotary direction of an impeller by changing the angle of each variable guide blade when the variable guide blade must provide prewhirl to a fluid flowing in. CONSTITUTION:When an actuator 30 is rotated clockwise around a shaft 29, a link rod 25 moves to the right direction, which allows brackets 23A-23E to rotate counter clockwise on the center of shafts 20A-20E and thereby guide blades 20A- 20E also rotate counter clockwise respectively. The rotary angles of the guide blades 20A-20E are designed to more increase as they advance to the left direction. When prewhirl is required, an air flowing in from a suction nozzle 13 forms an intensive air flow deviated to the right direction as indicated by an arrow symbol by taking the position of a variable inlet guide blade as indicated with dotted lines, and provides an effective accelerating capacity to an impeller 1.</p> |
