| 摘要 |
IN A PROPELLER FAN, A PLURALITY OF BLADES (21A AND 21B) FOR BLOWING ARE COUPLED TOGETHER WITH A SPACE IN A ROTATIONAL DIRECTION KEPT THEREBETWEEN, AND A COUPLED REGION HAS A FORM FOR PERFORMING THE BLOWING ACCORDING TO THE ROTATION THEREOF. THIS STRUCTURE PROVIDES A PROPELLER FAN GREATLY CONTRIBUTING TO ENERGY-SAVING PROPERTIES AND RESOURCE-SAVING DESIGN. |
