Patents by Inventor Gnanakumar Robertson Abel

Gnanakumar Robertson Abel 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).

  • Compressor capacity modulation system and method
    Patent number: 7584625
    Abstract: A compressor system includes a compressor having an inlet, a first conduit fluidly coupled to the inlet, an accumulator fluidly coupled to the inlet by a second conduit, and a first valve disposed in the second conduit that prevents fluid communication between the accumulator and the inlet in a closed state and permits fluid communication between the accumulator and the inlet in an open state.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: September 8, 2009
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Man Wai Wu, Gnanakumar Robertson Abel, Ka Yiu Lau
  • Compressor with vapor injection system
    Patent number: 7275385
    Abstract: A heat pump system includes a first heat exchanger, a second heat exchanger in fluid communication with the first heat exchanger, a scroll compressor in fluid communication with each of the first and second heat exchangers, and a flash tank in fluid communication with each of the first and second heat exchangers and the scroll compressor. The flash tank includes an inlet fluidly coupled to the first and second heat exchangers and receives liquid refrigerant from the first and second heat exchangers. The flash tank also includes a first outlet fluidly coupled to the first and second heat exchangers that delivers sub-cooled-liquid refrigerant to the second heat exchanger and a second outlet fluidly coupled to the scroll compressor that delivers vaporized refrigerant to the scroll compressor in a heating mode.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: October 2, 2007
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Gnanakumar Robertson Abel, Man Wai Wu, Ka Yiu Lau
  • Compressor capacity modulation system and method
    Publication number: 20070089443
    Abstract: A compressor system includes a compressor having an inlet, a first conduit fluidly coupled to the inlet, an accumulator fluidly coupled to the inlet by a second conduit, and a first valve disposed in the second conduit that prevents fluid communication between the accumulator and the inlet in a closed state and permits fluid communication between the accumulator and the inlet in an open state.
    Type: Application
    Filed: October 21, 2005
    Publication date: April 26, 2007
    Inventors: Man Wu, Gnanakumar Robertson Abel, Ka Lau
  • Compressor with vapor injection system
    Publication number: 20070039347
    Abstract: A heat pump system includes a first heat exchanger, a second heat exchanger in fluid communication with the first heat exchanger, a scroll compressor in fluid communication with each of the first and second heat exchangers, and a flash tank in fluid communication with each of the first and second heat exchangers and the scroll compressor. The flash tank includes an inlet fluidly coupled to the first and second heat exchangers and receives liquid refrigerant from the first and second heat exchangers. The flash tank also includes a first outlet fluidly coupled to the first and second heat exchangers that delivers sub-cooled-liquid refrigerant to the second heat exchanger and a second outlet fluidly coupled to the scroll compressor that delivers vaporized refrigerant to the scroll compressor in a heating mode.
    Type: Application
    Filed: August 22, 2005
    Publication date: February 22, 2007
    Inventors: Gnanakumar Robertson Abel, Man Wu, Ka Lau