Patents by Inventor Won-jae Choi

Won-jae Choi 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: 7481071
    Abstract: A cooling/heating apparatus using a cogeneration system is disclosed.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: January 27, 2009
    Assignee: LG Electronics Inc.
    Inventors: Chang Min Choi, Seung Tak Kang, Won Jae Choi, Hyung Soo Lim, Yoon Jei Hwang
  • Patent number: 7466034
    Abstract: A cogeneration system is disclosed, wherein a generator which generates electricity, a drive source which operates to drive the generator, and generates waste heat during the operation of the drive source, a waste heat recoverer which recovers the waste heat of the drive source, and a radiator which radiates the waste heat recovered by the waste heat recoverer are arranged in a single chassis. The cogeneration system has a compact and simple arrangement, and achieves simple control operations, and an enhancement in operability.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: December 16, 2008
    Assignee: LG Electronics Inc.
    Inventors: Seung Tak Kang, Chang Min Choi, Won Jae Choi, Hyung Soo Lim, Yoon Jei Hwang
  • Publication number: 20080088147
    Abstract: The present invention relates to a luggage floor box. A luggage floor box of a vehicle including: a receiving part which is formed by being downwardly indented at a rear side of a floor panel so as to provide a receiving space; and at least one partition disposed within the receiving part in a lengthwise direction thereof so as to divide the receiving space into a plurality of receiving spaces. The receiving part is configured to house a center seat of the last row which is mounted on the floor panel.
    Type: Application
    Filed: November 28, 2006
    Publication date: April 17, 2008
    Inventor: Won Jae Choi
  • Patent number: 7305840
    Abstract: An electricity generating and air conditioning system with a dehumidifier. The system includes an engine, a generator connected to an output shaft of the engine to generate electricity, a dehumidifying agent body to dehumidify indoor air, a regeneration heater to regenerate the dehumidifying agent body, and a waste heat recovering means to supply waste heat of the engine to the regeneration heater, and thus, to allow the regeneration heater to use the supplied waste heat as a heat source for the regeneration of the dehumidifying agent body, so that the system exhibits a maximal efficiency.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: December 11, 2007
    Assignee: LG Electronics Inc.
    Inventors: Seung Tak Kang, Chang Min Choi, Won Jae Choi, Hyung Soo Lim, Yoon Jei Hwang
  • Patent number: 7243504
    Abstract: A cogeneration system including an engine, which drives a generator to generate electricity, a cooling/heating unit using a heat pump type refrigerant cycle, in which a refrigerant is circulated through at least one compressor, a four-way valve, a first outdoor heat exchanger, a first expansion device, and an indoor heat exchanger, in this order, during a cooling operation of the cogeneration system, and a waste heat consuming heating unit using a refrigerant cycle, in which the refrigerant is circulated through the compressor, the four-way valve, the indoor heat exchanger, a second expansion device, and a second outdoor heat exchanger to be heated by waste heat of the engine, in this order, during a heating operation of the cogeneration system. In accordance with the cogeneration system, it is possible to maximize utilization of engine waste heat during the heating operation and to achieve an enhancement in heating performance.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: July 17, 2007
    Assignee: LG Electronics Inc.
    Inventors: Seung Tak Kang, Chang Min Choi, Won Jae Choi, Hyung Soo Lim, Yoon Jei Hwang
  • Patent number: 7240503
    Abstract: An electricity generating and air conditioning system with a dehumidifier. The system includes an engine, a generator connected to an output shaft of the engine to generate electricity, a heat pump type air conditioner, through which a refrigerant is circulated, the heat pump type air conditioner comprising a compressor, a directional valve, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger, an indoor dehumidifying agent body to dehumidify indoor air, an indoor regeneration heater to regenerate the indoor dehumidifying agent body, and a waste heat recovering means to supply waste heat of the engine to the indoor regeneration heater, and thus, to allow the indoor regeneration heater to use the supplied waste heat as a heat source for the regeneration of the indoor dehumidifying agent body, or to supply the waste heat of the engine to the refrigerant of the heat pump type air conditioner, so that the system exhibits maximal efficiency.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: July 10, 2007
    Assignee: LG Electronics Inc.
    Inventors: Seung Tak Kang, Chang Min Choi, Won Jae Choi, Hyung Soo Lim, Yoon Jei Hwang
  • Patent number: 7170191
    Abstract: A cogeneration system includes an engine, a generator connected to an output shaft of the engine to generate electricity, a heat pump type air conditioner, which uses the electricity generated from the generator, and includes a compressor, a directional valve, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger, a fluid-heating heat exchanger to heat a fluid, and a waste heat recovering means to supply waste heat of the engine to the heat pump type air conditioner or to the fluid-heating heat exchanger, so that the system exhibits a high energy efficiency.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: January 30, 2007
    Assignee: LG Electronics Inc.
    Inventors: Seung Tak Kang, Chang Min Choi, Won Jae Choi, Hyung Soo Lim, Yoon Jei Hwang
  • Publication number: 20070018009
    Abstract: A cogeneration system and a method for controlling the same have an advantage that it is easy to operate a cogeneration device because the operation of the cogeneration device can be controlled according to operation signals of an air conditioner, and have an effect that it is possible to make the best use of the generated electricity of the cogeneration device through an interconnection between the air conditioner and the cogeneration device.
    Type: Application
    Filed: July 10, 2006
    Publication date: January 25, 2007
    Applicant: LG ELECTRONICS INC.
    Inventors: Chang Min Choi, Yeong Seop Choe, Won Jae Choi, Jae Won Lee, Baik Young Chung, Se Dong Chang
  • Patent number: 7145258
    Abstract: An electricity generating and air conditioning system including an engine, a generator connected to an output shaft of the engine to generate electricity, an air conditioner, which uses the electricity generated from the generator and includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, and an expansion device, and an exhaust gas waste heat recovering device to recover heat of exhaust gas discharged from the engine and to transfer the recovered heat to a refrigerant passing through a discharge line of the compressor. The electricity generating and air conditioning system has an advantage in that an enhancement in heating performance is achieved.
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: December 5, 2006
    Assignee: LG Electronics Inc.
    Inventors: Seung Tak Kang, Chang Min Choi, Won Jae Choi, Hyung Soo Lim, Yoon Jei Hwang
  • Publication number: 20050241324
    Abstract: Provided is a defrosting method for an air conditioner capable of improving an efficiency of a heating mode by supplying the heating mode to a user as long as possible in a condition that a frost deposit is hardly generated. For this purpose, the defrosting method for the air conditioner comprises the steps of; establishing a defrosting initiation temperature of the air conditioner; and performing the defrosting operation based on the established defrosting initiation temperature.
    Type: Application
    Filed: February 16, 2005
    Publication date: November 3, 2005
    Inventors: Eun-Jun Cho, Ji-Young Jang, Yoon-Jei Hwang, Won-Jae Choi, Yun-Ho Ryu
  • Patent number: 6232797
    Abstract: Integrated circuit devices include a data buffer that is responsive to a control signal, enabled to pass data received at a data input thereof to a data output thereof when the control signal is in an active logic state and disabled to block passage of data from the data input to the data output when the control signal is in an inactive logic state. A data buffer control circuit is also provided. The data buffer control circuit latches a latency signal in response to a control clock, generates the control signal from the latched latency signal and comprises a pulse generator that drives the control signal to its inactive logic state in-sync with an edge of the latency signal. This inactive control signal can be used to disable the data buffer.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: May 15, 2001
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Won-jae Choi, Jung-bae Lee, Si-yeol Lee