Patent ID: 6767184
Filing Date: 2004-07-27
Classification: F04D

Abstract:
A blower comprising:a motor; a blowing fan coupled to the motor via a shaft; a scroll housing including a front panel having a sucking inlet, a rear panel, and side panels sealing all edges of the front and rear panels, except for the outlet, the scroll housing defining a body portion serving to guide air sucked through the sucking inlet in a rotating direction of the blowing fan; a hopper portion extending from the body portion while serving to discharge the air introduced into the body portion through the outlet; and a cutoff formed at a boundary between the body and hopper portions to extend the front panel to the rear panel, wherein the cutoff of the scroll housing has an inclination of 50 to 80Â° with respect to the shaft of the blowing fan and a cutoff portion of the cutoff formed at the front panel is more concave than a cutoff portion formed at the rear panel.