CENTRIFUGAL BLOWER AND SEAT FOR AUTOMOBILES

摘要

PROBLEM TO BE SOLVED: To provide a centrifugal blower of a small size and a low height for a high blast performance with a low noise. SOLUTION: A centrifugal multi-wing impeller 10 comprising a plurality of blades 11 around a rotation center axis 10a for blowing air taken in along the rotation center axis outward in the radial direction is stored in a spiral scroll casing 20. The ratio of the height H of the centrifugal multi-wing impeller in the rotation center axis direction to the diameter D of the centrifugal multi-wing impeller H/D is 0.2 or below. The logarithm spiral spreading angleγof the scroll casing is 2.0 degrees or above. COPYRIGHT: (C)2011,JPO&INPIT