Patents by Inventor Roozbeh Izadi-Zamanabad

Roozbeh Izadi-Zamanabad 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).

  • Controller for a vapour compression system and a method for controlling a vapour compression system
    Patent number: 10359222
    Abstract: The invention discloses a controller for a vapor compression system for cooling a refrigerated space. The system comprises a circuit for circulation of a refrigerant between a compressor, a condenser, and an evaporator. An expansion valve controls a flow of the refrigerant into the evaporator and thereby cooling of the refrigerated space. The control system is adapted to control the expansion valve based on a first temperature in the circuit between the evaporator and the compressor and a second temperature determined in the refrigerated space.
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: July 23, 2019
    Assignee: Danfoss A/S
    Inventors: Roozbeh Izadi-Zamanabad, Harald Alnor
  • CONTROLLER FOR A VAPOUR COMPRESSION SYSTEM AND A METHOD FOR CONTROLLING A VAPOUR COMPRESSION SYSTEM
    Publication number: 20150107282
    Abstract: The invention discloses a controller for a vapour compression system for cooling a refrigerated space. The system comprises a circuit for circulation of a refrigerant between a compressor, a condenser, and an evaporator. An expansion valve controls a flow of the refrigerant into the evaporator and thereby cooling of the refrigerated space. The control system is adapted to control the expansion valve based on a first temperature in the circuit between the evaporator and the compressor and a second temperature determined in the refrigerated space.
    Type: Application
    Filed: March 19, 2013
    Publication date: April 23, 2015
    Applicant: Danfoss A/S
    Inventors: Roozbeh Izadi-Zamanabad, Harald Alnor
  • Method for detecting changes in a first media flow of a heat or cooling medium in a refrigeration system
    Patent number: 7685830
    Abstract: The invention concerns a method for detecting changes in a first flow of a heating or cooling medium in a refrigeration system whereby the first flow is conveyed through a heat exchanger wherein occurs heat transfer from the first flow to a second flow of a heating or cooling medium. The earliest possible detection of the changes is desired. For this it is provided that for the supervision of the first media flow moving through the heat exchanger a change in the enthalpy of the second media stream or a value derived therefrom is determined.
    Type: Grant
    Filed: April 12, 2003
    Date of Patent: March 30, 2010
    Assignee: Danfoss A/S
    Inventors: Claus Thybo, Bjarne Dindler Rasmussen, Roozbeh Izadi-Zamanabad
  • Method for detecting changes in a first flux of a heat or cold transport medium in a refrigeration system
    Publication number: 20050172647
    Abstract: The invention concerns a method for detecting changes in a first flow of a heating or cooling medium in a refrigeration system whereby the first flow is conveyed through a heat exchanger wherein occurs heat transfer from the first flow to a second flow of a heating or cooling medium. The earliest possible detection of the changes is desired. For this it is provided that for the supervision of the first media flow moving through the heat exchanger a change in the enthalpy of the second media stream or a value derived therefrom is determined.
    Type: Application
    Filed: April 12, 2003
    Publication date: August 11, 2005
    Applicant: DANFOSS A/S
    Inventors: Claus Thybo, Bjarne Dindler Rasmussen, Roozbeh Izadi-Zamanabad