Patents by Inventor Pilhwan KIM

Pilhwan 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).

  • Patent number: 10012232
    Abstract: A compressor includes: a compression space with an annular shape comprising an inner circumferential surface and an outer circumferential surface; and a discharge opening formed in a direction parallel to a shaft direction of the compressor, to discharge a refrigerant compressed in the compression space, wherein a first portion of a cross-sectional area of the discharge opening overlaps a portion of a cross-sectional area of the compression space, a second portion of the cross-sectional area of the discharge opening does not overlap the cross-sectional area of the discharge opening, and the ratio of the non-overlapping second portion of the cross-sectional area of the discharge opening to the entire cross-sectional area of the discharge opening is 0.1 or less. With such a configuration, a dead volume generated in the compression space can be reduced, and thus compressor efficiency can be enhanced.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: July 3, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Pilhwan Kim, Changjun Noh, Hanseob Lim
  • Publication number: 20150377237
    Abstract: A compressor includes: a compression space with an annular shape comprising an inner circumferential surface and an outer circumferential surface; and a discharge opening formed in a direction parallel to a shaft direction of the compressor, to discharge a refrigerant compressed in the compression space, wherein a first portion of a cross-sectional area of the discharge opening overlaps a portion of a cross-sectional area of the compression space, a second portion of the cross-sectional area of the discharge opening does not overlap the cross-sectional area of the discharge opening, and the ratio of the non-overlapping second portion of the cross-sectional area of the discharge opening to the entire cross-sectional area of the discharge opening is 0.1 or less. With such a configuration, a dead volume generated in the compression space can be reduced, and thus compressor efficiency can be enhanced.
    Type: Application
    Filed: June 9, 2015
    Publication date: December 31, 2015
    Inventors: Pilhwan KIM, Changjun NOH, Hanseob LIM
  • Patent number: 9145889
    Abstract: A scroll compressor is provided that may include a discharge cover that separates a suction space and a discharge space of an airtight container. The discharge cover may be inserted into a fixed scroll to be fixedly coupled thereto, reducing an amount of components, such as a gasket and fastening bolts required to fix the discharge cover, and an assembly time, reducing overall production costs. Also, as fastening bolts are not used, a width corresponding to a space for bolts may be reduced in the fixed scroll, whereby a phenomenon in which the fixed scroll is heated by a discharge refrigerant within the discharge space may be reduced, reducing suction loss of the refrigerant sucked into the compression chamber and improving compressor efficiency. Also, a size of the fixed scroll may be reduced, reducing a weight of the fixed scroll, and a weight of the overall compressor.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: September 29, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Pilhwan Kim, Injong Jang
  • Patent number: 9145891
    Abstract: A scroll compressor is provided. The scroll compressor may include a valve and a valve spring accommodated in a housing as one module, and the housing may be directly coupled to a fixed scroll. This may simplify assembly processes of the scroll compressor. Further, a sealing recess that communicates with a middle pressure chamber may be formed at the housing, thereby forming a damping space between a high pressure space and a low pressure space. This may prevent lowering of performance of the scroll compressor due to leakage of refrigerant inside the high pressure space to the low pressure space in a normal driving mode.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: September 29, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Pilhwan Kim, Minwoo Roh, Haejin Oh, Sungwoo Choi
  • Publication number: 20130224054
    Abstract: A scroll compressor is provided. The scroll compressor may include a discharge cover that separates a suction space and a discharge space of an airtight container. The discharge cover may be inserted into a fixed scroll so as to be fixedly coupled thereto, thereby reducing an amount of components, such as a gasket and fastening bolts required to fix the discharge cover, and an assembly time to assemble components, reducing production overall costs. Also, as fastening bolts are not used, a width corresponding to a space for bolts may be reduced in the fixed scroll, whereby a phenomenon in which the fixed scroll is heated by a discharge refrigerant within the discharge space may be reduced, thereby reducing suction loss of the refrigerant sucked into the compression chamber and improving compressor efficiency. Also, a size of the fixed scroll may be reduced, thereby reducing a weight of the fixed scroll, and a weight of the overall compressor.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 29, 2013
    Inventors: Pilhwan KIM, Injong Jang
  • Publication number: 20120009076
    Abstract: A scroll compressor is provided. The scroll compressor may include a valve and a valve spring accommodated in a housing as one module, and the housing may be directly coupled to a fixed scroll. This may simplify assembly processes of the scroll compressor. Further, a sealing recess that communicates with a middle pressure chamber may be formed at the housing, thereby forming a damping space between a high pressure space and a low pressure space. This may prevent lowering of performance of the scroll compressor due to leakage of refrigerant inside the high pressure space to the low pressure space in a normal driving mode.
    Type: Application
    Filed: January 13, 2011
    Publication date: January 12, 2012
    Inventors: Pilhwan KIM, Minwoo Roh, Haejin Oh, Sungwoo Choi