Patent ID: 6781835
Filing Date: 2004-08-24
Classification: F04D,G06F,H01L

Abstract:
An air-applying device, comprising:an impeller having a center of rotation; and a case which contains said impeller, said case having: (1) a first edge defining an inlet port of air which exposes the center of rotation of said impeller, (2) a second edge defining an outlet port of air, and (3) a high-pressure region which presents upon operational rotation of said impeller, the high-pressure region located within the case along a peripheral portion of said impeller, wherein a distance between the center of rotation of said impeller and the first edge is shorter in the direction from the center of rotation to a center of the high-pressure region than from the center of rotation to regions other than the high-pressure region, and the first edge is formed such that the inlet port has a non-circular shape.