Patents by Inventor Hyeung-Ju Kim

Hyeung-Ju Kim 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).

  • Refrigerator
    Patent number: 8955352
    Abstract: The present invention relates to a refrigerator. The present invention improves a structure of a door and a storage basket, thereby making it possible to facilitate the storage and a drawing out of articles.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: February 17, 2015
    Assignee: LG Electronics Inc.
    Inventors: Su Won Lee, Hyeung Ju Kim, Kyung Eun Lee
  • Driving controlling apparatus for reciprocating compressor and method thereof
    Patent number: 8221091
    Abstract: Driving controlling apparatus and method for a reciprocating compressor capable of stably driving a reciprocating compressor when a reciprocating compressor is operated or an output capacity of the reciprocating compressor is varied, by matching an impedance of the apparatus to an inductance of a motor, and capable of enhancing an efficiency of the reciprocating compressor. The apparatus comprises an output capacity determining unit for determining an output capacity of a reciprocating compressor; an over-stroke preventing unit for preventing an over-stroke of a motor inside the reciprocating compressor; and an impedance matching unit for matching an inductance of the reciprocating compressor to an impedance of the apparatus.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: July 17, 2012
    Assignee: LG Electronics Inc.
    Inventors: Hyeung-Ju Kim, Chang-Oh Kim, Chel-Woong Lee
  • Reciprocating compressor stroke control by compensating motor inductance influences
    Patent number: 8221090
    Abstract: An operation controlling apparatus for a reciprocating compressor, and a method thereof, which are capable of accurately controlling the reciprocating compressor by sensing a size of a load applied to the reciprocating compressor and a stroke estimation value of the reciprocating compressor and then compensating a parameter of a motor in the reciprocating compressor based upon the sensing, the operation controlling apparatus comprising a controlling unit a controlling unit for comparing a phase difference between a detected current and a stroke with a reference phase difference to determine a size of a load, and outputting, according to the determined size of the load, a compensation control signal to compensate a parameter of a motor and a stroke control signal to control the stroke.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: July 17, 2012
    Assignee: LG Electronics Inc.
    Inventors: Hyeung-Ju Kim, Ji-Won Sung, Chang-Oh Kim
  • REFRIGERATOR
    Publication number: 20120060544
    Abstract: The present invention relates to a refrigerator. The present invention improves a structure of a door and a storage basket, thereby making it possible to facilitate the storage and a drawing out of articles.
    Type: Application
    Filed: September 3, 2009
    Publication date: March 15, 2012
    Applicant: LG ELECTRONICS INC.
    Inventors: Su Won Lee, Hyeung Ju Kim, Kyung Eun Lee
  • Driving Controlling Apparatus for Reciprocating Compressor and Method Thereof
    Publication number: 20080292475
    Abstract: Driving controlling apparatus and method for a reciprocating compressor capable of stably driving a reciprocating compressor when a reciprocating compressor is operated or an output capacity of the reciprocating compressor is varied, by matching an impedance of the apparatus to an inductance of a motor, and capable of enhancing an efficiency of the reciprocating compressor. The apparatus comprises an output capacity determining unit for determining an output capacity of a reciprocating compressor; an over-stroke preventing unit for preventing an over-stroke of a motor inside the reciprocating compressor; and an impedance matching unit for matching an inductance of the reciprocating compressor to an impedance of the apparatus.
    Type: Application
    Filed: October 20, 2006
    Publication date: November 27, 2008
    Inventors: Hyeung-Ju Kim, Chang-Oh Kim, Chel-Woong Lee
  • Operation Controlling Apparatus for Reciprocating Compressor and Method Thereof
    Publication number: 20080226465
    Abstract: An operation controlling apparatus for a reciprocating compressor, and a method thereof, which are capable of accurately controlling the reciprocating compressor by sensing a size of a load applied to the reciprocating compressor and a stroke estimation value of the reciprocating compressor and then compensating a parameter of a motor in the reciprocating compressor based upon the sensing, the operation controlling apparatus comprising a controlling unit a controlling unit for comparing a phase difference between a detected current and a stroke with a reference phase difference to determine a size of a load, and outputting, according to the determined size of the load, a compensation control signal to compensate a parameter of a motor and a stroke control signal to control the stroke.
    Type: Application
    Filed: October 18, 2006
    Publication date: September 18, 2008
    Inventors: Hyeung-Ju Kim, Ji-Won Sung, Chang-Oh Kim