Patents by Inventor Ismail Sezal

Ismail Sezal 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).

  • Centrifugal compressor with twisted return channel vane
    Patent number: 9822793
    Abstract: Three-dimensional (3D) return vane for a multistage centrifugal compressor. The return channel vane extends upstream to a region proximate the bend apex of the return channel. In each point of the return channel vane, the angle “beta” is defined as the acute angle between the tangent to the local camberline and the local circumferential direction. At each normalized position between leading edge and trailing edge, the local twist of the return channel vane is defined as the algebraic difference between the angles beta at the two points at hub and shroud having said normalized position. When moving in streamwise direction from leading edge to trailing edge, the twist first decreases, reaching an algebraic minimum, then increases, reaching an algebraic maximum, then decreases again. However, the absolute twist of the algebraic minimum is larger than the absolute twist of the algebraic maximum.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: November 21, 2017
    Assignee: Nuovo Pignone Srl
    Inventors: Ismail Sezal, Christian Aalburg, Vittorio Michelassi, Giuseppe Sassanelli
  • CENTRIFUGAL COMPRESSOR WITH TWISTED RETURN CHANNEL VANE
    Publication number: 20150300369
    Abstract: Three-dimensional (3D) return vane for a multistage centrifugal compressor. The return channel vane extends upstream to a region proximate the bend apex of the return channel. In each point of the return channel vane, the angle “beta” is defined as the acute angle between the tangent to the local camberline and the local circumferential direction. At each normalised position between leading edge and trailing edge, the local twist of the return channel vane is defined as the algebraic difference between the angles beta at the two points at hub and shroud having said normalised position. When moving in streamwise direction from leading edge to trailing edge, the twist first decreases, reaching an algebraic minimum, then increases, reaching an algebraic maximum, then decreases again. However, the absolute twist of the algebraic minimum is larger than the absolute twist of the algebraic maximum.
    Type: Application
    Filed: November 5, 2013
    Publication date: October 22, 2015
    Applicant: Nuovo Pignone Srl
    Inventors: Ismail SEZAL, Christian AALBURG, Vittorio MICHELASSI, Giuseppe SASSANELLI
  • Wet gas compressor systems
    Patent number: 8690519
    Abstract: The present application provides for a wet gas compressor system. The wet gas compressor system may include a wet gas compressor with an inlet section. A variable cross-section nozzle may be positioned about the inlet section.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: April 8, 2014
    Assignee: General Electric Company
    Inventors: Christian Aalburg, Alexander Simpson, Vittorio Michelassi, Ismail Sezal
  • WET GAS COMPRESSOR SYSTEMS
    Publication number: 20120201660
    Abstract: The present application provides for a wet gas compressor system. The wet gas compressor system may include a wet gas compressor with an inlet section. A variable cross-section nozzle may be positioned about the inlet section.
    Type: Application
    Filed: February 4, 2011
    Publication date: August 9, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Christian Aalburg, Alexander Simpson, Vittorio Michelassi, Ismail Sezal