Patents by Inventor Bong Jun Choi
Bong Jun 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).
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Publication number: 20090232666Abstract: The present invention discloses a linear compressor in which a piston is driven by a linear motor and linearly reciprocated inside a cylinder to suck, compress and discharge refrigerants. Even though load is varied, the linear compressor performs the operation in a resonance state by estimating a natural frequency of the piston and synchronizing an operation frequency of the linear motor with the natural frequency of the piston, and efficiently handles the load by varying a compression capacity by changing a stroke of the piston.Type: ApplicationFiled: August 30, 2004Publication date: September 17, 2009Applicant: LG Electronics, Inc.Inventors: Bong-Jun Choi, Hyun Kim, Jong-Min Shin, Chang-Yong Jang, Shin-Hyun Park, Young-Hoan Jeon, Chul-Gi Roh
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Publication number: 20090047154Abstract: The present invention discloses a linear compressor which can rapidly overcome load and improve compression efficiency, by synchronizing an operation frequency of a linear motor with a natural frequency of a movable member varied by the load and varying a stroke of the movable member according to the load. The linear compressor includes a fixed member having a compression space inside, a movable member linearly reciprocated in the fixed member in the axial direction, for compressing refrigerants sucked into the compression space, one or more springs installed to elastically support the movable member in the motion direction of the movable member, spring constants of which being varied by load, and a linear motor installed to be connected to the movable member, for linearly reciprocating the movable member in the axial direction, and varying a stroke of the movable member according to a predetermined refrigeration force, so that the movable member can be linearly reciprocated to reach a top dead center.Type: ApplicationFiled: August 30, 2004Publication date: February 19, 2009Applicant: LG Electronics, Inc.Inventors: Bong-Jun Choi, Chang-Yong Jang, Man-Seok Cho, Shin-Hyun Park, Hyun Kim, Jong-Min Shin, Young-Hoan Jeon, Chul-Gi Roh
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Publication number: 20080229777Abstract: 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: ApplicationFiled: June 21, 2004Publication date: September 25, 2008Inventors: Jae-Seng Sim, Young-Hwan Ko, Jongmin Shin, Bong-Jun Choi, Jun-Hyeon Hwang, Young Jeong, Samchul Ha, Yunho Hwang
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Publication number: 20080213108Abstract: The present invention discloses a linear compressor in which a piston is driven by a linear motor and linearly reciprocated inside a cylinder to suck, compress and discharge refrigerants. The linear compressor synchronizes an operation frequency of the linear motor with a natural frequency of the piston, considering that an elastic force of a mechanical spring and a gas spring which elastically support the piston in the motion direction is varied by load. Even if the load is varied, the linear motor is operated in the resonance state, to maximize efficiency. The linear compressor varies a stroke of the piston according to the load, thereby actively handling and rapidly overcoming the load and reducing power consumption.Type: ApplicationFiled: August 30, 2004Publication date: September 4, 2008Applicant: LG Electronics, Inc.Inventors: Bong-Jun Choi, Chang-Yong Jang, Man-Seok Cho, Shin-Hyun Park, Hyun Kim, Jong-Min Shin, Young-Hoan Jeon, Chul-Gi Roh
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Publication number: 20080095641Abstract: The present invention discloses an apparatus and method for controlling a linear compressor which can actively handle load and efficiently perform an operation, by synchronizing an operation frequency with a natural frequency of a movable member varied by the load.Type: ApplicationFiled: August 30, 2004Publication date: April 24, 2008Applicant: LG Electronics, Inc.Inventors: Bong-Jun Choi, Chang-Yong Jang, Man-Seok Cho, Shin-Hyun Park, Hyun Kim, Jong-Min Shin, Yong-Hoan Jeon, Chul-Gi Roh
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Publication number: 20080000257Abstract: 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: ApplicationFiled: December 14, 2004Publication date: January 3, 2008Inventors: Bong Jun Choi, Jong Min Sin, Jae Seong Sim, Young Jeong, Young Hwan Ko, Jun Hyun Hwang
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Patent number: 7263856Abstract: A refrigerator is disclosed, by which a specific part of a freezer room and/or a specific part of a cold storage room can be adjusted. The refrigerator includes a body having a cold storage room and a freezer room, an evaporator provided to the body to generate cold air, a plurality of racks partitioning each of the cold storage and freezer rooms into a plurality of chambers, and at least one adjustment device provided to each rear portion of the racks, the at least one adjustment device configured to adjust a quantity of the cold air supplied to each of the chambers.Type: GrantFiled: May 26, 2005Date of Patent: September 4, 2007Assignee: LG Electronics Inc.Inventors: Bong Jun Choi, Sang Ik Lee, Jae Seong Sim, Young Jeong
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Publication number: 20050279119Abstract: 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: ApplicationFiled: June 21, 2004Publication date: December 22, 2005Inventors: Jae-Seng Sim, Young-Hwan Ko, Jongmin Shin, Bong-Jun Choi, Jun-Hyeon Hwang, Young Jeong, Samchul Ha, Yunho Hwang
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Patent number: 6857288Abstract: 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: GrantFiled: February 28, 2002Date of Patent: February 22, 2005Assignee: 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
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Patent number: 6789614Abstract: 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: GrantFiled: June 12, 2002Date of Patent: September 14, 2004Assignee: LG Electronics Inc.Inventors: Jong Min Sin, Bong Jun Choi, Cheol Hwan Kim, Seong Hai Jeong, Young Hwan Ko, Young Jeong, Sam Chul Ha
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Publication number: 20040118152Abstract: 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: ApplicationFiled: October 24, 2003Publication date: June 24, 2004Inventors: Sam Chul Ha, Jong Min Sin, Bong Jun Choi, Cheol Hwan Kim, Young Hwan Ko, Young Jeong, Seong Hai Jeong, Alexei V Tikhonov
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Publication number: 20030159814Abstract: 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: ApplicationFiled: June 12, 2002Publication date: August 28, 2003Inventors: Jong Min Sin, Bong Jun Choi, Cheol Hwan Kim, Seong Hai Jeong, Young Hwan Ko, Young Jeong, Sam Chul Ha