Patents by Inventor Zonghan SUN

Zonghan SUN 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).

  • ACOUSTIC CUTOFF BASED NOISE REDUCTION DEVICE FOR HEAT DISSIPATION FANS, AND MANUFACTURING METHOD THEREOF
    Publication number: 20220082112
    Abstract: Disclosed is a noise reduction device for heat dissipation fans, the noise reduction device being applied to a heat dissipation fan with an interference structure for rotor and stator blades, wherein the noise reduction device comprises a duct formed at an end portion of a through-flow area of the heat dissipation fan, the inner diameter D of the duct is determined by the size and the rotation speed of the heat dissipation fan, and the axial length L of the duct is determined by an acoustic cutoff condition of the heat dissipation fan.
    Type: Application
    Filed: October 14, 2021
    Publication date: March 17, 2022
    Inventors: Zonghan SUN, Jie TIAN, Hua OUYANG