Patents by Inventor Steen Lauridsen

Steen Lauridsen 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).

  • Method and a device for detecting flash gas
    Patent number: 7681407
    Abstract: A method and a device for detecting flash gas in a vapor-compression refrigeration or heat pump system comprising a compressor, a condenser, an expansion device, and an evaporator interconnected by conduits providing a flow path for a refrigerant, by determining a first rate of heat flow of a heat exchange fluid flow across a heat exchanger of the system and a second rate of heat flow of the refrigerant across the heat exchanger, and using the rates of heat flow for establishing an energy balance from which a parameter for monitoring the refrigerant flow is derived, to thereby provide early detection of flash gas with a minimum number of false alarms.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: March 23, 2010
    Assignee: Danfoss A/S
    Inventors: Claus Thybo, Bjarne Dindler Rasmussen, Steen Lauridsen, Vagn Helberg
  • Cooling unit and flow distributing element for use in such unit
    Patent number: 7339788
    Abstract: A liquid-cooled power semiconductor unit has components to be cooled arranged on the upper side of a plate. The bottom side of the plate is cooled by liquid, which is guided along the plate by means of a distributing element, and the liquid inlet and the liquid outlet of the distributing element are preferably arranged perpendicular to the plate. The distributing element is divided into cells, where each cell has a liquid inlet and a liquid outlet perpendicular to the cooled plate, and the distributing element has multiple cells along the plate.
    Type: Grant
    Filed: May 7, 2003
    Date of Patent: March 4, 2008
    Assignee: Danfoss Silicon Power GmbH
    Inventors: Klaus Kristen Olesen, Ronald Eisele, Steen Lauridsen
  • Cooling unit and flow distributing element for use in such unit
    Publication number: 20050180104
    Abstract: A liquid-cooled power semiconductor unit has components to be cooled arranged on the upper side of a plate. The bottom side of the plate is cooled by liquid, which is guided along the plate by means of a distributing element, and the liquid inlet and the liquid outlet of the distributing element are preferably arranged perpendicular to the plate. The distributing element is divided into cells, where each cell has a liquid inlet and a liquid outlet perpendicular to the cooled plate, and the distributing element has multiple cells along the plate.
    Type: Application
    Filed: May 7, 2003
    Publication date: August 18, 2005
    Inventors: Klaus Olesen, Steen Lauridsen
  • Method and a device for detecting flash gas
    Publication number: 20050166609
    Abstract: A method and a device for detecting flash gas in a vapour-compression refrigeration or heat pump system comprising a compressor, a condenser, an expansion device, and an evaporator interconnected by conduits providing a flow path for a refrigerant, by determining a first rate of heat flow of a heat exchange fluid flow across a heat exchanger of the system and a second rate of heat flow of the refrigerant across the heat exchanger, and using the rates of heat flow for establishing an energy balance from which a parameter for monitoring the refrigerant flow is derived, to thereby provide early detection of flash gas with a minimum number of false alarms.
    Type: Application
    Filed: July 3, 2003
    Publication date: August 4, 2005
    Applicant: Danfoss A/S
    Inventors: Claus Thybo, Bjarne Rasmussen, Steen Lauridsen, Vagn Helberg