Patents by Inventor Michajlo Bothien

Michajlo Bothien 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: 6416281
    Abstract: A method for cooling the flow in radial gaps formed between rotors and stators of turbomachines, which method is improved with regard to its cooling effect. In addition, a simple, cost-effective and robust arrangement for realizing the method is to be specified. According to the invention, this is achieved in that a first cooling fluid is admitted to a stator part adjacent to the radial gap and a second, gaseous cooling fluid is introduced into the radial gap. To this end, either at least one recess is formed in the interior of the stator part adjacent to the radial gap or at least one cavity is arranged at the stator part. The recess or the cavity is connected to both a feed line and a discharge line for the first cooling fluid. In addition, at least one feed passage as well as a discharge device for the second cooling fluid are arranged at the radial gap.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: July 9, 2002
    Assignee: Asea Brown Boveri AG
    Inventors: Joachim Bremer, Michajlo Bothien, Jürg Greber, Ulf Christian Müller, Dirk Wunderwald, Helmut Gieszauf
  • Patent number: 6257834
    Abstract: A method of cooling the flow in radial gaps formed between rotors and stators turbo machines is provided. The method includes the step of using water as a cooling fluid for the stator part adjacent to the radial gap. To this end, either at least one recess is formed in the interior of the stator part adjacent to the radial gap or at least one cavity is arranged at the stator part. The recess or the cavity is connected to both a feed line and a discharge line for the cooling fluid.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: July 10, 2001
    Assignee: Asea Brown Boveri AG
    Inventors: Joachim Bremer, Michajlo Bothien, Jürg Greber, Ulf Christian Müller, Dirk Wunderwald, Helmut Gieszauf