Patents by Inventor Hans-Jurgen Bersch

Hans-Jurgen Bersch 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: 8775123
    Abstract: The present invention relates to a method for the determination of the coefficient of performance of a refrigeration machine, in particular of a heat pump, which includes a closed circuit which has a refrigerant and in which an evaporator, a compressor, a condenser and an expansion valve are arranged. In the method, at least three temperatures of the refrigerant are determined using temperature sensors arranged in the circuit. Alternatively, at least two temperatures and at least one pressure of the refrigerant is determined using sensors arranged in the circuit. Enthalpies of the circuit are calculated from the determined refrigerant temperatures and refrigerant pressures and the heat output and the taken up electrical power of the refrigeration machine are calculated therefrom to determine the coefficient of performance of the refrigeration machine from the quotient of the calculated heat output and the calculated taken up electrical power.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: July 8, 2014
    Assignee: Emerson Climate Technologies GmbH
    Inventors: Hans-Jürgen Bersch, Raymond Steils
  • Publication number: 20100153057
    Abstract: The present invention relates to a method for the determination of the coefficient of performance of a refrigeration machine, in particular of a heat pump, which includes a closed circuit which has a refrigerant and in which an evaporator, a compressor, a condenser and an expansion valve are arranged. In the method, at least three temperatures of the refrigerant are determined using temperature sensors arranged in the circuit. Alternatively, at least two temperatures and at least one pressure of the refrigerant is determined using sensors arranged in the circuit. Enthalpies of the circuit are calculated from the determined refrigerant temperatures and refrigerant pressures and the heat output and the taken up electrical power of the refrigeration machine are calculated therefrom to determine the coefficient of performance of the refrigeration machine from the quotient of the calculated heat output and the calculated taken up electrical power.
    Type: Application
    Filed: December 10, 2009
    Publication date: June 17, 2010
    Applicant: EMERSON ELECTRIC GMBH & CO. OHG
    Inventors: Hans-Jürgen Bersch, Raymond Steils
  • Patent number: 7711451
    Abstract: The invention relates to a control unit for a refrigeration or air conditioning device, comprising a main processor that is situated in a housing and that controls the temperature, fan and/or the defrosting process of a refrigeration or air conditioning device. Contact points for a co-processor, which is separate from the main processor and is suitable for controlling an electronic expansion valve, are located in said housing.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: May 4, 2010
    Assignee: Emerson Electric GmbH & Co., OHG
    Inventors: Peter Aue, Ali R. Nejad, Hans-Jürgen Bersch, Bernd Kowanz
  • Patent number: 7698904
    Abstract: The invention relates to a control unit for controlling the expansion valve of a refrigeration or air conditioning system, comprising a temperature sensor that is connected upstream of the expansion valve in the coolant circuit. If the control unit detects a decrease in temperature of the aforementioned temperature sensor, which is generally caused by the start of a defrosting process, it displaces the expansion valve into a static state, to protect said valve during the defrosting process.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: April 20, 2010
    Assignee: Emerson Electric GmbH & Co. OHG
    Inventor: Hans-Jürgen Bersch
  • Publication number: 20080282715
    Abstract: The invention relates to a control unit for a refrigeration or air conditioning device, comprising a main processor that is situated in a housing and that controls the temperature, fan and/or the defrosting process of a refrigeration or air conditioning device. Contact points for a co-processor, which is separate from the main processor and is suitable for controlling an electronic expansion valve, are located in said housing.
    Type: Application
    Filed: April 20, 2005
    Publication date: November 20, 2008
    Inventors: Peter Aue, Ali R. Nejad, Hans-Jurgen Bersch, Bernd Kowanz
  • Publication number: 20070277543
    Abstract: The invention relates to a control unit for controlling the expansion valve of a refrigeration or air conditioning system, comprising a temperature sensor that is connected upstream of the expansion valve in the coolant circuit. If the control unit detects a decrease in temperature of the aforementioned temperature sensor, which is generally caused by the start of a defrosting process it displaces the expansion valve into a static state, to protect said valve during the defrosting process.
    Type: Application
    Filed: April 20, 2005
    Publication date: December 6, 2007
    Inventor: Hans-Jurgen Bersch