Patents by Inventor Johan Hsu

Johan Hsu 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).

  • Patent number: 8647053
    Abstract: A cooled component wall (52) with a combustion gas (36) on one side (56) and a coolant gas (48) with higher pressure on the other side (58). The wall includes a cooling chamber (60) with an impingement cooling zone (62), a convective cooling zone (64), and a film cooling zone (66). Impingement holes (70) admit and direct jets (72) of coolant against the wall, then the coolant passes among heat transfer elements such as channels (76) and fins (78) to the film cooling zone (66) where it passes through holes in the wall that direct a film of the coolant along the combustion side of the wall. The chamber may be oriented with the impingement zone (62) downstream and the film cooling zone (66) upstream, relative to the combustion gas flow (36). This provides two passes of the coolant (84, 79) in opposite directions over the respective opposite sides of the wall (56, 58).
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: February 11, 2014
    Assignee: Siemens Energy, Inc.
    Inventors: Johan Hsu, Jay A. Morrison
  • Publication number: 20120034075
    Abstract: A cooled component wall (52) with a combustion gas (36) on one side (56) and a coolant gas (48) with higher pressure on the other side (58). The wall includes a cooling chamber (60) with an impingement cooling zone (62), a convective cooling zone (64), and a film cooling zone (66). Impingement holes (70) admit and direct jets (72) of coolant against the wall, thence the coolant passes among heat transfer elements such as channels (76) and fins (78) to the film cooling zone (66) where it passes through holes in the wall that direct a film of the coolant along the combustion side of the wall. The chamber may be oriented with the impingement zone (62) downstream and the film cooling zone (66) upstream, relative to the combustion gas flow (36). This provides two passes of the coolant (84, 79) in opposite directions over the respective opposite sides of the wall (56, 58).
    Type: Application
    Filed: August 9, 2010
    Publication date: February 9, 2012
    Inventors: Johan Hsu, Jay A. Morrison
  • Patent number: 7810334
    Abstract: A transition duct having an inlet opening and an outlet opening and a body portion extending between the inlet and outlet openings at respective inlet and outlet ends. The inlet opening defines a generally circular cross-section for the body portion and has a geometric center, and the outlet opening defines a generally rectangular arc-like cross-section. The body portion has an internal profile substantially in accordance with coordinate values X, Y and Z at an angle ?, as set forth in Table 1, where each of the X, Y and Z coordinate values are taken at a sweep angle ? passing through the section origin and measured from a first plane defined by the inlet end and increasing toward a second plane defined by the outlet end.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: October 12, 2010
    Assignee: Siemens Energy, Inc.
    Inventors: Johan Hsu, Andrew G. McQuiggan, Robert W. Dawson
  • Patent number: 7527469
    Abstract: One embodiment of a transition-to-turbine seal (300) comprises a transition exit seal (302) adapted for fixed attachment to an exit rail (350) of a transition (109), and a stage-1 seal (340). The stage-1 seal (340) comprises an axial seal slot (348) comprising parallel walls (346, 347) adapted to slidingly engage a first male member (310) of the transition exit seal (302). The stage-1 seal (340) also comprises a radial seal slot (354) comprising parallel walls (351, 353) adapted to slidingly engage a plate (338) of a row 1 vane segment (330). The transition-to-turbine seal (300) thus provides both axial and radial freedom of movement. Materials and coatings for the transition exit seal (302) and the stage-1 seal (340) are selected to promote preferential wear of these components relative to wear of the surface of the row 1 vane segment (330). Wear of the exit rail (350) is reduced or eliminated due to the noted fixed attachment.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: May 5, 2009
    Assignee: Siemens Energy, Inc.
    Inventors: James M. Zborovsky, Johan Hsu, Andrew G. McQuiggan
  • Publication number: 20080087020
    Abstract: A transition duct having an inlet opening and an outlet opening and a body portion extending between the inlet and outlet openings at respective inlet and outlet ends. The inlet opening defines a generally circular cross-section for the body portion and has a geometric center, and the outlet opening defines a generally rectangular arc-like cross-section. The body portion has an internal profile substantially in accordance with coordinate values X, Y and Z at an angle ?, as set forth in Table 1, where each of the X, Y and Z coordinate values are taken at a sweep angle ? passing through the section origin and measured from a first plane defined by the inlet end and increasing toward a second plane defined by the outlet end.
    Type: Application
    Filed: October 13, 2006
    Publication date: April 17, 2008
    Inventors: Johan Hsu, Andrew G. McQuiggan, Robert W. Dawson
  • Publication number: 20060123797
    Abstract: One embodiment of a transition-to-turbine seal (300) comprises a transition exit seal (302) adapted for fixed attachment to an exit rail (116) of a transition (109), and a stage-1 seal (340). The stage-1 seal (340) comprises an axial seal slot (348) comprising parallel walls (346, 347) adapted to slidingly engage a first male member (310) of the transition exit seal (302). The stage-1 seal (340) also comprises a radial seal slot (354) comprising parallel walls (351, 353) adapted to slidingly engage a plate (338) of a row 1 vane segment (330). The transition-to-turbine seal (300) thus provides both axial and radial freedom of movement. Materials and coatings for the transition exit seal (302) and the stage-1 seal (340) are selected to promote preferential wear of these components relative to wear of the surface of the row 1 vane segment (330). Wear of the exit rail (116) is reduced or eliminated due to the noted fixed attachment.
    Type: Application
    Filed: December 8, 2005
    Publication date: June 15, 2006
    Inventors: James Zborovsky, Johan Hsu, Andrew McQuiggan