Abstract
Recently, it's necessary for saving energy of air-conditioner to reduce fan noise. In this study, the new type of cross flow fan is developed, which has pretty high performance of noise reduction. That new fan is called "saw-edged blade fan" whose blade has a lot of cutouts. In this paper, PIV (Particle Image Velocimetry) measurement is carried out to analyze the flow structure of blade passage of the fans, and it's found out that the decrease of wake by saw-edged blade effects the noise reduction of the fan.
