Patents by Inventor Harshal R. Upadhye

Harshal R. Upadhye 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).

  • Scroll compressor capacity modulation with hybrid solenoid and fluid control
    Patent number: 8308448
    Abstract: A scroll compressor includes a compressor shell having first and second scroll members. The scroll members each have a base and a generally spiral wrap extending from its base. The generally spiral wraps of the first and second scroll members interfit to define compression chambers. A shaft causes the second scroll member to orbit relative to the first scroll member. At least one bypass port is formed in a base of one scroll member, and communicates with at least one of the compression chambers. The bypass port communicates with a passage leading to a suction pressure chamber within the compressor shell. A solenoid valve is movable between a reduced capacity position and a full capacity position, and selectively supplies a pressurized fluid to a fluid valve associated with the bypass port, such that movement of the solenoid can control whether the bypass port is open or closed.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: November 13, 2012
    Assignee: Danfoss Scroll Technologies LLC
    Inventors: Gene Fields, Joe T. Hill, Tracy L. Milliff, Tapesh P. Patel, Harshal R. Upadhye, Behzad Parastar, Ole Horst Christensen
  • SCROLL COMPRESSOR CAPACITY MODULATION WITH HYBRID SOLENOID AND FLUID CONTROL
    Publication number: 20110135509
    Abstract: A scroll compressor includes a compressor shell having first and second scroll members. The scroll members each have a base and a generally spiral wrap extending from its base. The generally spiral wraps of the first and second scroll members interfit to define compression chambers. A shaft causes the second scroll member to orbit relative to the first scroll member. At least one bypass port is formed in a base of one scroll member, and communicates with at least one of the compression chambers. The bypass port communicates with a passage leading to a suction pressure chamber within the compressor shell. A solenoid valve is movable between a reduced capacity position and a full capacity position, and selectively supplies a pressurized fluid to a fluid valve associated with the bypass port, such that movement of the solenoid can control whether the bypass port is open or closed.
    Type: Application
    Filed: December 8, 2009
    Publication date: June 9, 2011
    Inventors: Gene Fields, Joe T. Hill, Tracy L. Milliff, Tapesh P. Patel, Harshal R. Upadhye, Behzad Parastar, Ole Holst Christensen