| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fan system with enhanced air flow-static pressure characteristics and reduced fan noise compared to the related art. <P>SOLUTION: The number of duct blades 55A-55E of a duct is the same as the number of stationary blades 23A-23E of an axial flow fan 1A located in front of the duct, and the duct blades correspond to the stationary blades respectively. An end surface 23h of a rear end portion 23f of each of the stationary blade 23A-23E and an end surface 55g of a front portion 55f of the duct blades 55A-55E corresponding to the stationary blades 23A-23E have the same shape, and they align together and contact each other to form one composite stationary blade 66A, with a discharge port 33 of each axial flow fan 1A communicating with an inlet port 63 of a duct housing 49 located behind the axial flow fan. <P>COPYRIGHT: (C)2010,JPO&INPIT |
