Thin radial blower for car air-conditioner: reduction of NZ-noise by taper-blade

摘要

Recently the blower of car air conditioner is demanded for low-noise, miniaturization and improvement of quality of sound. We had hit on the radial blower. Specially NZ-noise makes the quality of blower sound bad, so we made the relation of noise and flow in blower clear by using visualization and 3Dcalculat ion method. Finally we improved the noise and the flow in the blower by developing the new fan which has new type blades -"Taper Blade"-.Now the fan is produced for some vehicles.