Axial-flow fan

Axial-flow fan

  • CN 1,975,180 A
  • Filed: 11/30/2006
  • Published: 06/06/2007
  • Est. Priority Date: 11/30/2005
  • Status: Active Application
First Claim
Patent Images

1. axial flow fan comprises:

  • Fan guard, described fan guard comprises the air passageways with relief opening and bleeding point;

    Have a plurality of blades and be arranged on impeller in the fan guard;

    The rotor that impeller is fixed thereon, and described rotor is around the axle rotation;

    The stator that respective rotor is provided with;

    The peripheral wall part that motor body, described motor body comprise the bottom wall portion that is positioned at relief opening one side and form continuously with bottom wall portion and extend towards bleeding point, stator is fixed on the bottom wall portion;

    AndA plurality of stator blades, described a plurality of stator blades are provided with and are positioned at the relief opening of air passageways at interval on the sense of rotation of rotor, each of described a plurality of stator blades connects motor body and fan guard,Each of described a plurality of stator blades have the inner wall section that is connected to fan guard the outer end, be connected to the peripheral wall part of motor body inner end, be formed between outer end and the inner end and be positioned at the discharge-side edge portions of relief opening one side, and be formed between outer end and the inner end and be positioned at the lateral edge portions of bleeding of bleeding point one sideIn described a plurality of stator blade each all is bent towards the sense of rotation of the rotor mode with projection,Whole or most of stator blades in described a plurality of stator blade roughly tilt, and make that the discharge-side edge portions of stator blade is more forward on sense of rotation than the lateral edge portions of bleeding of described stator blade,Wherein whole or most of described stator blades near the inclination angle its outer end greater than near whole or most of described stator blades inclination angle the end within it, and the inclination angle near the outer end towards changing gradually near the inner end;

    AndThe inclination angle is restricted to along the imaginary plane of relief opening with by the angle between the dummy line of first intersection point and second intersection point, wherein be restricted to and described imaginary plane quadrature and crossing at described first intersection point place and discharge-side edge portions with the quadrature imaginary plane of the discharge-side edge portions and the lateral edge portions quadrature of bleeding, described quadrature imaginary plane intersects with the lateral edge portions of bleeding at the described second intersection point place.

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