Patents by Inventor Ronghai Mao

Ronghai Mao 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).

  • Swirler having vanes provided with at least two lobes in opposite transverse directions with reference to a vane central plane
    Patent number: 9347663
    Abstract: A swirler including an annular housing with limiting walls. At least two vanes are arranged in the annular housing including the sidewalls of the swirler. The leading edge area of each vane has a profile, which is oriented parallel to a main flow direction prevailing at the leading edge position, wherein the profiles of the vanes turn from the main flow direction prevailing at the leading edge position to impose a swirl on the flow, and wherein, with reference to a central plane of the vanes the trailing edges are provided with at least two lobes in opposite transverse directions. A burner for a combustion chamber of a gas turbine including such a swirler and at least one nozzle having its outlet orifice at or in a trailing edge of the vane and to a method of operation of such a burner.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: May 24, 2016
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Madhavan Narasimhan Poyyapakkam, Fernando Biagioli, Khawar Syed, Ronghai Mao, Stefano Bernero
  • LOBED SWIRLER
    Publication number: 20120285173
    Abstract: A swirler including an annular housing with limiting walls. At least two vanes are arranged in the annular housing including the sidewalls of the swirler. The leading edge area of each vane has a profile, which is oriented parallel to a main flow direction prevailing at the leading edge position, wherein the profiles of the vanes turn from the main flow direction prevailing at the leading edge position to impose a swirl on the flow, and wherein, with reference to a central plane of the vanes the trailing edges are provided with at least two lobes in opposite transverse directions. A burner for a combustion chamber of a gas turbine including such a swirler and at least one nozzle having its outlet orifice at or in a trailing edge of the vane and to a method of operation of such a burner.
    Type: Application
    Filed: May 11, 2012
    Publication date: November 15, 2012
    Applicant: ALSTOM Technology Ltd
    Inventors: Madhavan Narasimhan POYYAPAKKAM, Fernando Biagioli, Khawar Syed, Ronghai Mao, Stefano Bernero