Patents by Inventor Bengt Ake Arthur Bredberg

Bengt Ake Arthur Bredberg 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).

  • Free cooling cascade arrangement for refrigeration system
    Patent number: 7913506
    Abstract: A refrigeration system includes a medium temperature subsystem circulating a coolant in a closed loop between at least one medium temperature chiller and at least one medium temperature load and at least one cascade heat exchanger, and a low temperature subsystem circulating a coolant in a closed loop between at least one low temperature chiller and at least one low temperature load. A cooling circuit is provided for circulating a coolant and includes a first pump and a second pump and a fluid cooler and a valve, and interfaces with the medium temperature chiller and the low temperature chiller. The valve is movable to a closed position to define a first flow path and a second flow path, where the first flow path includes the first pump and the medium temperature chiller and fluid cooler, and the second flow path including the second pump and the low temperature chiller and the cascade heat exchanger.
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: March 29, 2011
    Assignee: Hill Phoenix, Inc.
    Inventors: John D. Bittner, Vincent Ronald Rose, Bengt Ake Arthur Bredberg
  • FREE COOLING CASCADE ARRANGEMENT FOR REFRIGERATION SYSTEM
    Publication number: 20090260381
    Abstract: A refrigeration system includes a medium temperature subsystem circulating a coolant in a closed loop between at least one medium temperature chiller and at least one medium temperature load and at least one cascade heat exchanger, and a low temperature subsystem circulating a coolant in a closed loop between at least one low temperature chiller and at least one low temperature load. A cooling circuit is provided for circulating a coolant and includes a first pump and a second pump and a fluid cooler and a valve, and interfaces with the medium temperature chiller and the low temperature chiller. The valve is movable to a closed position to define a first flow path and a second flow path, where the first flow path includes the first pump and the medium temperature chiller and fluid cooler, and the second flow path including the second pump and the low temperature chiller and the cascade heat exchanger.
    Type: Application
    Filed: April 22, 2008
    Publication date: October 22, 2009
    Inventors: John D. Bittner, Vincent Ronald Rose, Bengt Ake Arthur Bredberg