Rotor-stator axial air moving device

Abstract

A rotor-stator axial air moving device includes a housing, a rotor, and a stator. The rotor and the stator are disposed in the housing. The rotor includes a rotor hub and multiple rotor blades. The stator includes a stator hub and multiple stator blades. Each stator blade includes a blade root and a blade tip. The pitch angle is defined between the nose-tail line of wing section and a rotation direction of the axial air moving device. The pitch angles from the blade root to the blade tip of the wing section of each stator blade are configured in a manner of gradually increasing and then gradually decreasing.

1 . A rotor-stator axial air moving device, comprising:
 a housing;   a rotor, disposed in the housing, and comprising a rotor hub of a first cylinder and a plurality of rotor blades arranged annularly and spacedly on a periphery of the rotor hub; and   a stator, disposed in the housing and located on a downstream side of the rotor, and comprising a stator hub of a second cylinder and a plurality of stator blades arranged annularly and spacedly, each stator blade comprising a blade root connected to the stator hub and a blade tip located away from the stator hub;   wherein, each stator blade is configured by a plurality of wing sections being stacked continuously, and a pitch angle is defined between a nose-tail line of each wing section and a rotation direction of the axial air moving device; and   wherein, the pitch angles from the blade root to the blade tip of the wing section of each stator blade are configured in a manner of gradually increasing and then gradually decreasing.   
     
     
         2 . The rotor-stator axial air moving device in  claim 1 , wherein a maximum pitch angle of the wing section of each stator blade is located between a span position of 0.15 to the span position of 0.75. 
     
     
         3 . The rotor-stator axial air moving device in  claim 1 , wherein the stator hub comprises a cylinder, and the stator blades are arranged on a periphery of the stator hub. 
     
     
         4 . The rotor-stator axial air moving device in  claim 1 , wherein the stator blades are connected to an inner wall of the housing. 
     
     
         5 . The rotor-stator axial air moving device in  claim 1 , wherein the pitch angle direction of the stator blade is opposite to that of the rotor blade.