| 摘要 |
<p>PURPOSE:To obtain large wind velocity toward the center of a fan and to deflect the direction of the wind by providing blades radially on a grill and by forming a part of the blades in rotatable blades and the other part in stationary blades. CONSTITUTION:A grill device for electric fan is composed of a grill 2, stationary blades 3 installed integratedly and radially, on the grill 2 and movable blades 4 radially incorporated in the grill 2. Gears 9 on the inside ends of the movable blades 4 are opposedly engaged with gears 12 installed on the movable pieces 10 provided rotatably in the central boss of the grill 2. The entire grill device is rotated by a timing motor 14. Then when all the movable blades 4 are set up exactly in parallel to the wind, large wind velocity can be obtained and the center of the wind is in the central direction of the body. When the movable blades 4 are inclined, deflected wind can be obtained.</p> |
