Patents by Inventor Ulf Sand

Ulf Sand 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).

  • Publication number: 20230314094
    Abstract: An electric arrangement comprising a casing; a heat generating electric component arranged inside the casing; and a heat exchanger comprising a three dimensional lattice cell structure, the three dimensional lattice cell structure being arranged to conduct a dielectric cooling fluid from the casing at an exterior side of the casing for heat exchange with an ambient fluid, and back towards the casing for cooling of the electric component. A panel for a heat exchanger and a heat exchanger comprising a plurality of panels are also provided.
    Type: Application
    Filed: March 26, 2021
    Publication date: October 5, 2023
    Inventors: Samuel Brodeur, Miguel Aguirre, Rebei Bel Fdhila, Frederic Tholence, Ulf Sand, Saeed Maleksaeedi
  • Patent number: 11719492
    Abstract: A heat exchanger comprising a primary side; a secondary side; at least one primary structure on the primary side defining at least one primary space on the primary side; and at least one secondary structure on the secondary side defining at least one secondary space on the secondary side; wherein one or more of the at least one primary structure and one or more of the at least one secondary structure delimit a coolant volume separated from the at least one primary space and separated from the at least one secondary space; wherein one or more of the at least one primary structure and/or one or more of the at least one secondary structure comprises a three dimensional lattice body.
    Type: Grant
    Filed: April 7, 2021
    Date of Patent: August 8, 2023
    Assignee: HITACHI ENERGY SWITZERLAND AG
    Inventors: Frederic Tholence, Ulf Sand, Rebei Bel Fdhila
  • Publication number: 20230124112
    Abstract: A heat exchanger comprising a primary side; a secondary side; at least one primary structure on the primary side defining at least one primary space on the primary side; and at least one secondary structure on the secondary side defining at least one secondary space on the secondary side; wherein one or more of the at least one primary structure and one or more of the at least one secondary structure delimit a coolant volume separated from the at least one primary space and separated from the at least one secondary space; wherein one or more of the at least one primary structure and/or one or more of the at least one secondary structure comprises a three dimensional lattice body.
    Type: Application
    Filed: April 7, 2021
    Publication date: April 20, 2023
    Inventors: Frederic Tholence, Ulf Sand, Rebei Bel Fdhila
  • Patent number: 11542188
    Abstract: A glass furnace for continuous operation, including a melting tank for containing a glass melt, and at least one magnetic actuator configured to generate a time-varying magnetic field suitable for moving a stirring body immersed in the glass melt.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: January 3, 2023
    Assignee: ABB Schweiz AG
    Inventors: Ener Salinas, Xiaojing Zhang, Hongliang Yang, Göran Eriksson, Ulf Sand
  • Publication number: 20220098077
    Abstract: A glass furnace for continuous operation, including a melting tank for containing a glass melt, and at least one magnetic actuator configured to generate a time-varying magnetic field suitable for moving a stirring body immersed in the glass melt.
    Type: Application
    Filed: February 21, 2020
    Publication date: March 31, 2022
    Inventors: Ener Salinas, Xiaojing Zhang, Hongliang Yang, Göran Eriksson, Ulf Sand
  • Patent number: 8876934
    Abstract: An apparatus for electromagnetic stirring of the steel melt in an electrical arc furnace includes two electromagnetic stirrer units, a current supply, and a control unit. The two stirrers are mounted on an outer bottom surface of the electrical arc furnace at opposites sides of a central position of the bottom surface, the current supply is operatively connected to the two electromagnetic stirrer units, and the control unit is operatively connected to the current supply to control the operation of the two electromagnetic stirrer units.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: November 4, 2014
    Assignee: ABB Research Ltd.
    Inventors: Jan-Erik Eriksson, Mohamed Ali Rahmani, Ola Widlund, Olof Hjortstam, Rebei Bel Fdhila, Shiva Sander-Tavallaey, Ulf Sand, Xiaojing Zhang, Tord Kroon
  • Patent number: 8721789
    Abstract: An apparatus for crystallization of silicon includes a crucible for containing silicon, a heating and heat dissipating arrangement provided for melting the silicon contained in the crucible and for subsequently solidifying the molten silicon, and an electromagnetic stirring device provided for stirring the molten silicon in the crucible during the solidification of the molten silicon. A control arrangement is provided for controlling the heating and heat dissipating arrangement to solidify the molten silicon at a specified solidification rate and for controlling the electromagnetic stirring device to stir the molten silicon in response to the specified solidification rate of the molten silicon such that the ratio of a speed of the molten silicon and the specified solidification rate is above a first threshold value.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: May 13, 2014
    Assignee: ABB AB
    Inventors: Jan-Erik Eriksson, Olof Hjortstam, Ulf Sand
  • Patent number: 8632632
    Abstract: An apparatus for crystallization of silicon includes a crucible for containing silicon, a heating and heat dissipating arrangement provided for melting the silicon contained in the crucible and for subsequently solidifying the molten silicon, and an electromagnetic stirring device provided for stirring the molten silicon in the crucible during the solidification of the molten silicon. A control arrangement is provided for controlling the heating and heat dissipating arrangement to solidify the molten silicon at a specified solidification rate and for controlling the electromagnetic stirring device to stir the molten silicon in response to the specified solidification rate of the molten silicon such that the ratio of a speed of the molten silicon and the specified solidification rate is above a first threshold value.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: January 21, 2014
    Assignee: ABB AB
    Inventors: Jan-Erik Eriksson, Olof Hjortstam, Ulf Sand
  • Publication number: 20130269483
    Abstract: An apparatus for electromagnetic stirring of the steel melt in an electrical arc furnace includes two electromagnetic stirrer units, a current supply, and a control unit. The two stirrers are mounted on an outer bottom surface of the electrical arc furnace at opposites sides of a central position of the bottom surface, the current supply is operatively connected to the two electromagnetic stirrer units, and the control unit is operatively connected to the current supply to control the operation of the two electromagnetic stirrer units.
    Type: Application
    Filed: March 14, 2013
    Publication date: October 17, 2013
    Inventors: Jan-Erik Eriksson, Mohamed Ali Rahmani, Ola Widlund, Olof Hjortstam, Rebei Bel Fdhila, Shiva Sander-Tavallaey, Ulf Sand, Xiaojing Zhang, Tord Kroon
  • Publication number: 20130104601
    Abstract: An apparatus for crystallization of silicon includes a crucible for containing silicon, a heating and heat dissipating arrangement provided for melting the silicon contained in the crucible and for subsequently solidifying the molten silicon, and an electromagnetic stirring device provided for stirring the molten silicon in the crucible during the solidification of the molten silicon. A control arrangement is provided for controlling the heating and heat dissipating arrangement to solidify the molten silicon at a specified solidification rate and for controlling the electromagnetic stirring device to stir the molten silicon in response to the specified solidification rate of the molten silicon such that the ratio of a speed of the molten silicon and the specified solidification rate is above a first threshold value.
    Type: Application
    Filed: December 17, 2012
    Publication date: May 2, 2013
    Inventors: Jan-Erik Eriksson, Olof Hjortstam, Ulf Sand
  • Publication number: 20120167629
    Abstract: An apparatus for crystallization of silicon includes a crucible for containing silicon, a heating and heat dissipating arrangement provided for melting the silicon contained in the crucible and for subsequently solidifying the molten silicon, and an electromagnetic stirring device provided for stirring the molten silicon in the crucible during the solidification of the molten silicon. A control arrangement is provided for controlling the heating and heat dissipating arrangement to solidify the molten silicon at a specified solidification rate and for controlling the electromagnetic stirring device to stir the molten silicon in response to the specified solidification rate of the molten silicon such that the ratio of a speed of the molten silicon and the specified solidification rate is above a first threshold value.
    Type: Application
    Filed: March 15, 2012
    Publication date: July 5, 2012
    Inventors: Jan-Erik Eriksson, Olof Hjortstam, Ulf Sand