Patents by Inventor Young Hwan Ko

Young Hwan Ko 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: 7726141
    Abstract: A refrigerator is provided which can individually cool a freezing chamber and a refrigerating chamber by dividing a heat exchange region of an evaporator into a freezing chamber side region and a refrigerating chamber side region, forming individual circulation passages for supplying cool air from each region to the freezing chamber and the refrigerating chamber, and forming a freezing chamber fan and a refrigerating chamber fan on each circulation passage. Further, a method for controlling operation of the same is provided which can efficiently perform a cooling operation and reduce power consumption by effectively controlling the operations of each component.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: June 1, 2010
    Assignee: LG Electronics Inc.
    Inventors: Jae-Seng Sim, Young-Hwan Ko, Jongmin Shin, Bong-Jun Choi, Jun-Hyeon Hwang, Young Jeong, Samchul Ha, Yunho Hwang
  • Publication number: 20100131115
    Abstract: The present invention relates to a controlling method of an air conditioner. The controlling method of an air conditioner having a phase separator, an expansion valve, a control valve, an evaporator, a multistage compressor, and a condenser, includes the steps of sensing an order to operate the air conditioner, stabilizing the air conditioner, setting a degree of superheat of refrigerant in the air conditioner, and setting an optimum intermediate pressure of the refrigerant of the air conditioner.
    Type: Application
    Filed: October 23, 2007
    Publication date: May 27, 2010
    Inventors: Bum Suk Kim, Sang Kyoung Park, Young Hwan Ko, Hyuk Soo Lee
  • Patent number: 7584627
    Abstract: Refrigerator including a freezing chamber (1), a refrigerating chamber (2) at a side of the freezing chamber, a barrier (303) between the freezing chamber and the refrigerating chamber, the barrier having a freezing chamber cold air passage (A) formed therein, a partition plate (7) for compartmentalizing a freezing chamber cold air passage in rear of the freezing chamber where an evaporator (104) is positioned, the evaporator provided in a “” form along the freezing chamber cold air passage (A) and the refrigerating chamber cold air passage (B), a partition wall (9) between the freezing chamber cold air passage and the refrigerating chamber cold air passage, and a fan (305) mounted over the freezing chamber cold air passage and the refrigerating chamber cold air passage for discharging cold air flowing through respective cold air passage (10) to the freezing chamber and the refrigerating chamber respectively, thereby improving a cooling rate of the refrigerating chamber and providing more efficient refrigerat
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: September 8, 2009
    Assignee: LG Electronics Inc.
    Inventors: Jae Sung Sim, Jong Min Shin, Young Hwan Ko
  • Publication number: 20090218077
    Abstract: The present invention discloses an air conditioning system comprises a phase separator separating a gaseous refrigerant and a liquid refrigerant from a flowing refrigerant, an evaporator evaporating the liquid refrigerant separated by the phase separator, and at least one compressor including a first compressing part receiving the refrigerant via the evaporator and a second compressing part receiving both of the gaseous refrigerant separated by the phase separator and the refrigerant via the first compressing part, wherein a volume of a first cylinder of the first compressing part is different from a volume of a second cylinder of the second compressing part.
    Type: Application
    Filed: January 3, 2007
    Publication date: September 3, 2009
    Applicant: LG ELECTRONICS INC.
    Inventors: Young Hwan Ko, Hyuk Soo Lee, Bum Suk Kim, Sang Kyoung Park, Byung Soon Kim
  • Publication number: 20090188265
    Abstract: An air conditioning system can improve the cooling/heating performance of the system because the injection of refrigerant into the compressor is achieved. The air conditioning system can further improve the cooling/heating performance in a low temperature region by injecting refrigerant as a two-phase refrigerant or a superheated vapor state into the compressor. The air conditioning system can prevent damage of the compressor and further improve reliability by controlling such that the ratio of a liquid refrigerant in the refrigerant injected into the compressor may be less than a set value.
    Type: Application
    Filed: June 19, 2008
    Publication date: July 30, 2009
    Applicant: LG ELECTRONICS INC.
    Inventors: Young Hwan Ko, Bum Suk Kim, Man Ho Chun
  • Publication number: 20090165482
    Abstract: In an air conditioning system, a first expansion device and a second expansion device playing a different role from each other are controlled in a different control method suitable for each role, thereby improving the performance and stability of the system. Furthermore, the control method for the first expansion device is differentiated according to the operation state of the air conditioning system, thereby improving the stability of the system. Furthermore, the intermediate pressure can be adjusted more rapidly and precisely according to the state of the air conditioning system by differentiating the control method for the first expansion device for adjusting the intermediate pressure depending on the degree of superheat of the refrigerant, thereby improving the stability and performance of the system.
    Type: Application
    Filed: May 30, 2008
    Publication date: July 2, 2009
    Applicant: LG Electronics Inc.
    Inventors: Young Hwan Ko, Bum Suk Kim, Man Ho Chun
  • Publication number: 20090165481
    Abstract: It is possible to prevent that a liquid refrigerant is included in a refrigerant injected into a compressor. Accordingly, the risk of liquid compression of the compressor is greatly reduced, thereby decreasing the possibility of damage to the compressor and improving reliability and performance.
    Type: Application
    Filed: June 17, 2008
    Publication date: July 2, 2009
    Applicant: LG Electronics Inc.
    Inventors: Young Hwan Ko, Bum Suk Kim, Man Ho Chun, Sang Kyoung Park
  • Publication number: 20080229777
    Abstract: The present invention discloses a refrigerator which can individually cool a freezing chamber and a refrigerating chamber by dividing a heat exchange region of an evaporator into a freezing chamber side region and a refrigerating chamber side region, forming individual circulation passages for supplying cool air from each region to the freezing chamber and the refrigerating chamber, and forming a freezing chamber fan and a refrigerating chamber fan on each circulation passage, and method for controlling operation of the same which can efficiently perform a cooling operation and reduce power consumption by effectively controlling the operations of each component.
    Type: Application
    Filed: June 21, 2004
    Publication date: September 25, 2008
    Inventors: Jae-Seng Sim, Young-Hwan Ko, Jongmin Shin, Bong-Jun Choi, Jun-Hyeon Hwang, Young Jeong, Samchul Ha, Yunho Hwang
  • Patent number: 7413858
    Abstract: Disclosed is a method for identifying Streptomyces species using groEL2 gene that can compensate for drawbacks of conventional methods of morphologic classification and 16S rDNA identification being time-consuming, unfaithful, and expensive, thus enabling to efficiently identify Streptomyces species.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: August 19, 2008
    Assignee: Korea Research Institute of Bioscience and Biotechnology
    Inventors: Bum-Joon Kim, Chang-Jin Kim, Young Hwan Ko, Jeong-Sam Koh, Dong-Jin Park, Hyang Burm Lee, Hong Kim, Sun-hyun Kim
  • Publication number: 20080131274
    Abstract: Fan apparatus including a fan, a shaft coupled to the fan for transmission of driving force from a motor to the fan, a rotor bushing of an insulating material joined to a rear end portion of the shaft, a rotor joined to the rotor bushing for transmission of the driving force to the shaft through the rotor bushing, and a stator mounted so as to be positioned on an inside of the rotor to form a BLDC motor together with the rotor, thereby reducing noise and enhancing fan efficiency by employing the BLDG motor which can make stable operation of the fan and increase an air flow rate.
    Type: Application
    Filed: August 19, 2004
    Publication date: June 5, 2008
    Inventors: In Gyu Kim, Byung Il Park, Ja Hyung Koo, Yang Ho Kim, Kyeong Wook Heo, Si Kyong Sung, Dong Hyuk Lee, Young Hwan Ko, Jun Hyeon Hwang, Ho Jin Song, Jin Seong Hwang, Young Ho Hong, Hwan Jong Choi, Geun Bae Hwang, Chun Su Kang, Tac Geun Kim
  • Publication number: 20080127671
    Abstract: The present invention provides a fan apparatus which can reduce noise and enhance fan efficiency by employing a BLDC motor that can make stable drive of the fan and increase an air flow rate, and an outdoor unit of a front suction/discharge type in an air conditioner that can enhance heat exchange efficiency by employing the same.
    Type: Application
    Filed: August 19, 2004
    Publication date: June 5, 2008
    Inventors: In Gyu Kim, Byung Il Park, Ja Hyung Koo, Yang Ho Kim, Kyeong Wook Heo, Si Kyong Sung, Dong Hyuk Lee, Young Hwan Ko, Jun Hyeon Hwang, Ho Jin Song, Jin Seong Hwang, Young Ho Hong, Hwan Jong Choi, Geun Bae Hwang, Chun Su Kang, Tac Geun Kim
  • Publication number: 20080000257
    Abstract: A refrigerator having a main body includes a refrigerating chamber and a freezing chamber provided for storing foods. A cool air-generating device provided in the body generates cool air and a cool air-supplying device including at least one opening for discharging the cool air, is used to circulate the cool air through the freezing chamber, the refrigerating chamber, and the cool air-generating device. A separator provided adjacent to the opening acts to uniformly diffuse the cool air in the freezing chamber and the refrigerating chamber. The separator acts to separate two flows that are then brought back together. The collision and mixing of the two flows create a turbulent flow of air that is directed into the refrigerating and freezing chambers.
    Type: Application
    Filed: December 14, 2004
    Publication date: January 3, 2008
    Inventors: Bong Jun Choi, Jong Min Sin, Jae Seong Sim, Young Jeong, Young Hwan Ko, Jun Hyun Hwang
  • Publication number: 20060005568
    Abstract: Refrigerator including a freezing chamber (1), a refrigerating chamber (2) at a side of the freezing chamber, a barrier (303) between the freezing chamber and the refrigerating chamber, the barrier having a freezing chamber cold air passage (A) formed therein, a partition plate (7) for compartmentalizing a freezing chamber cold air passage in rear of the freezing chamber where an evaporator (104) is positioned, the evaporator provided in a “” form along the freezing chamber cold air passage (A) and the refrigerating chamber cold air passage (B), a partition wall (9) between the freezing chamber cold air passage and the refrigerating chamber cold air passage, and a fan (305) mounted over the freezing chamber cold air passage and the refrigerating chamber cold air flowing through respective cold air passage (10) to the freezing chamber and the refrigerating chamber respectively, thereby improving a cooling rate of the refrigerating chamber and providing more efficient refrigerator.
    Type: Application
    Filed: December 16, 2003
    Publication date: January 12, 2006
    Applicant: LG Electronics Inc.
    Inventors: Jae Sim, Jong Min Shin, Young Hwan Ko
  • Publication number: 20050279119
    Abstract: The present invention discloses a refrigerator which can individually cool a freezing chamber and a refrigerating chamber by dividing a heat exchange region of an evaporator into a freezing chamber side region and a refrigerating chamber side region, forming individual circulation passages for supplying cool air from each region to the freezing chamber and the refrigerating chamber, and forming a freezing chamber fan and a refrigerating chamber fan on each circulation passage, and method for controlling operation of the same which can efficiently perform a cooling operation and reduce power consumption by effectively controlling the operations of each component.
    Type: Application
    Filed: June 21, 2004
    Publication date: December 22, 2005
    Inventors: Jae-Seng Sim, Young-Hwan Ko, Jongmin Shin, Bong-Jun Choi, Jun-Hyeon Hwang, Young Jeong, Samchul Ha, Yunho Hwang
  • Patent number: 6857288
    Abstract: The present invention relates to a heat exchanger in a refrigerator having a simple structure and an improved heat exchange performance. For this, the present invention includes refrigerant tubes (10) having a plurality of straight parts (11) and a plurality of curved parts (12) connected between the straight parts arrange to form one or more columns perpendicular to each other, a plurality of straight plate type fins (20) fitted to the straight parts (11) of the refrigerant tubes (10) by means of a plurality of through holes (21) formed therein to form one or more than columns along a length direction, and one pair of reinforcing plates (30) fitted to the straight parts of the refrigerant tubes on both sides of the fins, wherein ST=D/N, where D denotes a width of the reinforcing plate (30), ST denotes a distance between centers of the refrigerant tube in each column, N denotes a number of the columns of the refrigerant tubes (21).
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: February 22, 2005
    Assignee: LG Electronics Inc.
    Inventors: Sam Chul Ha, Jong Min Sin, Bong Jun Choi, Cheol Hwan Kim, Young Hwan Ko, Young Jeong, Seong Hai Jeong, Alexei V Tikhonov
  • Publication number: 20040265873
    Abstract: Disclosed is a method for identifying Streptomyces species using groEL2 gene that can compensate for drawbacks of conventional methods of morphologic classification and 16S rDNA identification being time-consuming, unfaithful, and expensive, thus enabling to efficiently identify Streptomyces species.
    Type: Application
    Filed: April 15, 2004
    Publication date: December 30, 2004
    Applicant: KOREA RESEARCH INSTITUTE OF BIOSCIENCE AND BIOTECHNOLOGY
    Inventors: Bum-Joon Kim, Chang-Jin Kim, Young Hwan Ko, Jeong-Sam Koh, Dong-Jin Park, Hyang Burm Lee, Hong Kim, Sun-huyn Kim
  • Patent number: 6789614
    Abstract: A heat exchanger is provided for a refrigerator and includes one or more refrigerant tubes for refrigerant flow, and a plurality of straight fins having lengths different from each other fitted to the refrigerant tubes at fixed intervals in parallel to each other by means of through holes formed therein. The heat exchanger includes sections having different intervals or spaces between fins, wherein sections with the smallest fin spaces have a size 75% or less of a total size of the heat exchanger.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: September 14, 2004
    Assignee: LG Electronics Inc.
    Inventors: Jong Min Sin, Bong Jun Choi, Cheol Hwan Kim, Seong Hai Jeong, Young Hwan Ko, Young Jeong, Sam Chul Ha
  • Publication number: 20040118152
    Abstract: The present invention relates to a heat exchanger in a refrigerator having a simple structure and an improved heat exchange performance. For this, the present invention includes refrigerant tubes (10) having a plurality of straight parts (11) and a plurality of curved parts (12) connected between the straight parts arrange to form one or more columns perpendicular to each other, a plurality of straight plate type fins (20) fitted to the straight parts (11) of the refrigerant tubes (10) by means of a plurality of through holes (21) formed therein to form one or more than columns along a length direction, and one pair of reinforcing plates (30) fitted to the straight parts of the refrigerant tubes on both sides of the fins, wherein ST=D/N, where D denotes a width of the reinforcing plate (30), ST denotes a distance between centers of the refrigerant tube in each column, N denotes a number of the columns of the refrigerant tubes (21).
    Type: Application
    Filed: October 24, 2003
    Publication date: June 24, 2004
    Inventors: Sam Chul Ha, Jong Min Sin, Bong Jun Choi, Cheol Hwan Kim, Young Hwan Ko, Young Jeong, Seong Hai Jeong, Alexei V Tikhonov
  • Publication number: 20030159814
    Abstract: The present invention relates to a heat exchanger in a refrigerator having, a simple structure and improved performance. The present invention includes refrigerant tubes for refrigerant flow, and a plurality of straight fins having lengths different from each other fitted to the refrigerant tubes at fixed intervals in parallel to each other by means of through holes formed therein, the heat exchanger having sections of different fin intervals, wherein a section with the smallest fin intervals has a size being 75% of a total size or less.
    Type: Application
    Filed: June 12, 2002
    Publication date: August 28, 2003
    Inventors: Jong Min Sin, Bong Jun Choi, Cheol Hwan Kim, Seong Hai Jeong, Young Hwan Ko, Young Jeong, Sam Chul Ha