Patents by Inventor Zhaoxu YAN

Zhaoxu YAN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Curved surface processing method for inlet edge of cylindrical blade of centrifugal pump impeller
    Patent number: 11333161
    Abstract: A curved surface processing method for an inlet edge of a cylindrical blade of a centrifugal pump impeller includes following steps. A center of an impeller is used as a center to draw circles having respective diameters. A first point having a first distance from the center is determined on a concave side curve at a top of the blade, and a second point having a second distance from the center is determined on a concave side curve at a bottom of the blade. By improving the shape of a blade in an impeller, the angle of an inlet edge at the top of the blade is more close to the tangent direction, and the inlet angle of the top blade is reduced. A twisted surface is formed between a first arc segment at the top and a second arc segment at the bottom.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: May 17, 2022
    Assignee: Jiangsu University
    Inventors: Qihua Zhang, Shun Kang, Weidong Zhang, Zhaoxu Yan
  • CURVED SURFACE PROCESSING METHOD FOR INLET EDGE OF CYLINDRICAL BLADE OF CENTRIFUGAL PUMP IMPELLER
    Publication number: 20210364007
    Abstract: A curved surface processing method for an inlet edge of a cylindrical blade of a centrifugal pump impeller includes following steps. A center of an impeller is used as a center to draw circles having respective diameters. A first point having a first distance from the center is determined on a concave side curve at a top of the blade, and a second point having a second distance from the center is determined on a concave side curve at a bottom of the blade. By improving the shape of a blade in an impeller, the angle of an inlet edge at the top of the blade is more close to the tangent direction, and the inlet angle of the top blade is reduced. A twisted surface is formed between a first arc segment at the top and a second arc segment at the bottom.
    Type: Application
    Filed: May 18, 2020
    Publication date: November 25, 2021
    Applicant: Jiangsu University
    Inventors: Qihua ZHANG, Shun KANG, Weidong ZHANG, Zhaoxu YAN