Patents by Inventor Yun Ryu
Yun Ryu 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: 20190207421Abstract: The present invention relates to a power supply and pickup system capable of maintaining stability of transmission efficiency despite changes in a resonant frequency. More particularly, the present invention relates to a power supply and pickup system capable of maintaining the stability of efficiency of transmitting power to a pickup device from a power supply device even when a voltage or current changes by the variation in a resonant frequency. According to the power supply and pickup system of the present invention, Q-factor of a power supply and pickup system is set to a low value, a stability of efficiency of transmitting power to a pickup device from a power supply device is maintained even when a voltage of current changes by the variation in a resonant frequency.Type: ApplicationFiled: January 15, 2019Publication date: July 4, 2019Inventors: Dong Ho Cho, Joung Ho Kim, Yang Bae Chun, Eun-Jung Kim, Ji-Yun Ryu, Mi-Joo Kim, II-Song Han, Seung-Young Ahn, Gyeng-Chul Kim, Gu Ho Jeong
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Patent number: 10230268Abstract: The present invention relates to a power supply and pickup system capable of maintaining stability of transmission efficiency despite changes in a resonant frequency. More particularly, the present invention relates to a power supply and pickup system capable of maintaining the stability of efficiency of transmitting power to a pickup device from a power supply device even when a voltage or current changes by the variation in a resonant frequency. According to the power supply and pickup system of the present invention, Q-factor of a power supply and pickup system is set to a low value, a stability of efficiency of transmitting power to a pickup device from a power supply device is maintained even when a voltage of current changes by the variation in a resonant frequency.Type: GrantFiled: September 25, 2012Date of Patent: March 12, 2019Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Dong Ho Cho, Joung Ho Kim, Yang Bae Chun, Eun-Jung Kim, Ji-Yun Ryu, Mi-Joo Kim, Il-Song Han, Seung-Young Ahn, Gyeng-Chul Kim, Gu Ho Jeong
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Publication number: 20140319927Abstract: The present invention relates to a power supply and pickup system capable of maintaining stability of transmission efficiency despite changes in a resonant frequency. More particularly, the present invention relates to a power supply and pickup system capable of maintaining the stability of efficiency of transmitting power to a pickup device from a power supply device even when a voltage or current changes by the variation in a resonant frequency. According to the power supply and pickup system of the present invention, Q-factor of a power supply and pickup system is set to a low value, a stability of efficiency of transmitting power to a pickup device from a power supply device is maintained even when a voltage of current changes by the variation in a resonant frequency.Type: ApplicationFiled: September 25, 2012Publication date: October 30, 2014Applicant: Korea Advanced Institute of Science and TechnologyInventors: Dong Ho Cho, Joung Ho Kim, Yang Bae Chun, Eun-Jung Kim, Ji-Yun Ryu, Mi-Joo Kim, Il-Song Han, Seung-Young Ahn, Gyeng-Chul Kim, Gu Jeong
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Publication number: 20060144064Abstract: An airconditioning generation system capable of solving an unbalanced phase, and a method for solving the unbalanced phase are disclosed. The airconditioning generation system includes one or more indoor units (111, 112, 113, 121, 122, 131, 132, 133), one or more outdoor units (110, 120, 130), a generator (70) for providing the indoor and outdoor units with a power-supply signal, and a distribution unit (80, 80?) for detecting an individual-phase power value consumed by the indoor units, changing a phase of the power-supply signal transmitted from the generator (70) to the indoor or outdoor units, and establishing three-phase equilibrium. Therefore, if an unbalanced phase occurs in the three-phase power-supply signals applied to an airconditioner, the system solves the unbalanced phase, such that it prevents a product from being damaged and increases product reliability.Type: ApplicationFiled: December 2, 2005Publication date: July 6, 2006Applicant: LG Electronics Inc.Inventors: Yeong Choe, Eun Cho, Jae Lee, Baik Chung, Yun Ryu
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Publication number: 20060123819Abstract: A cogeneration system includes a compression air conditioner including a compressor, a first heat exchanger and a second heat exchanger; an absorption air conditioner including a regenerator, an absorber, a third heat exchanger and a fourth heat exchanger; a generator which generates electricity; a drive source which drives the generator to generate the electricity for operating the compression air conditioner and the absorption air conditioner and generates waste heat when driving the generator; and a waste heat recoverer which recovers the waste heat of the drive source and supplies the recovered waste heat to at least one of the compression air conditioner and the absorption air conditioner.Type: ApplicationFiled: December 8, 2005Publication date: June 15, 2006Applicant: LG Electronics Inc.Inventors: Yeong Choe, Eun Cho, Jae Lee, Yoon Hwang, Yun Ryu
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Publication number: 20060123821Abstract: A cogeneration system is disclosed. The cogeneration system includes a heat pump type air conditioner, a waste heat recoverer to recover waste heat of a drive source, a waste heat supplying heat exchanger, which is heated by the waste heat recovered by the waste heat recoverer, and a bypassing unit, which causes the waste heat supplying heat exchanger to function as an evaporator during a heating operation of the heat pump type air conditioner. In accordance with this arrangement, it is possible to enhance the heating capacity of the heat pump type air conditioner irrespective of outdoor temperature, to prevent damage of compressors, and to minimize power consumption.Type: ApplicationFiled: June 20, 2005Publication date: June 15, 2006Applicant: LG Electronics Inc.Inventors: Yun Ryu, Eun Cho, Yoon Hwang, Cheol Kim, Cheol Ko
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Publication number: 20060037344Abstract: A cogeneration system including an engine, which drives a generator to generate electricity, a cooling/heating unit, which comprises at least one compressor, a four-way valve, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger, to establish a heat pump type refrigerant cycle, and an exhaust heat consuming heating unit to supply heat of exhaust gas discharged from the engine to a heat exchanging zone of the indoor heat exchanger of the cooling/heating unit, and thus, to heat a confined space. Since waste heat generated from the engine is directly used in the cooling/heating unit, an enhancement in indoor heating efficiency is achieved.Type: ApplicationFiled: February 1, 2005Publication date: February 23, 2006Applicant: LG Electronics Inc.Inventors: Eun Cho, Yun Ryu, Young Choi, Baik Cheong, Jae Lee
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Publication number: 20060037352Abstract: A cogeneration system including an engine, which drives a generator to generate electricity, a cooling/heating unit, which comprises at least one compressor, a four-way valve, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger, to establish a heat pump type refrigerant cycle, a cooling water heat supplier to supply heat of cooling water used to cool the engine to a suction side of the compressor of the cooling/heating unit and to pre-heat air passing through the outdoor heat exchanger, and a discharge-side refrigerant over-heater to supply heat of exhaust gas discharged from the engine to a discharge side of the compressor. In accordance with the cogeneration system, it is possible to maximize absorption of the waste heat of the engine while preventing compressor malfunction, and thus, to increase the refrigerant condensing temperature of the indoor heat exchanger and the refrigerant pre-heating temperature of the outdoor heat exchanger.Type: ApplicationFiled: February 1, 2005Publication date: February 23, 2006Applicant: LG Electronics Inc.Inventors: Eun Cho, Yun Ryu, Young Choi, Baik Cheong, Jae Lee
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Publication number: 20060037346Abstract: A cogeneration system including an engine, which drives a generator to generate electricity, a cooling/heating unit, which includes at least one compressor, a four-way valve, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger, to establish a heat pump type refrigerant cycle, and a refrigerant over-heating unit to supply heat of cooling water used to cool the engine to a suction-side refrigerant line of the compressor of the cooling/heating unit, and to supply heat of exhaust gas discharged from the engine to the suction-side refrigerant line of the compressor and to a discharge-side refrigerant line of the compressor. In accordance with the cogeneration system, it is possible to maximize absorption of the waste heat of the engine while preventing compressor malfunction, and thus, to increase the refrigerant condensing temperature of the indoor heat exchanger. Thus, an enhancement in heating performance is achieved.Type: ApplicationFiled: February 1, 2005Publication date: February 23, 2006Applicant: LG Electronics Inc.Inventors: Eun Cho, Yun Ryu, Young Choi, Baik Cheong, Jae Lee
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Publication number: 20050103048Abstract: An air-conditioner having multiple compressors includes: an indoor heat-exchanger disposed indoors and heat-exchanging indoor air; an outdoor heat-exchanger disposed outdoors and heat-exchanging a refrigerant with external air; four compressors for compressing the refrigerant to change the refrigerant to have a high temperature and high pressure; and three accumulators disposed at a suction side of the four compressors and separating the refrigerant into a gas and a liquid to supply a gaseous refrigerant to the compressors. Oil can be uniformly supplied to each compressor, thereby enhancing reliability of compressors, and since the three accumulators are small with low capacities, their installation space can be easily secured.Type: ApplicationFiled: June 24, 2004Publication date: May 19, 2005Applicant: LG Electronics Inc.Inventors: Cheol Kim, Eun Cho, Yoon Hwang, Yun Ryu, Chan Song, Won Lee, Chang Choi, Ji Jang, Young Choi, Woo Cha, Seung Hyun
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Patent number: 6541745Abstract: In a heater system for a microwave oven including an air tunnel having an suction portion and a discharge portion, formed at an upper surface of a cooking chamber, a fan assembly installed inside the air tunnel and having a circulation fan forming air flow by sucking air inside the cooking chamber through the suction portion and discharge the sucked air through the air tunnel and the discharge portion, a first heater chamber having a first heater installed inside the air tunnel and heating air discharged into the discharge portion from the air tunnel, and a second heater chamber having a second heater installed inside the air tunnel and emitting radiation heat into the cooking chamber, wherein the suction portion and the discharge portion are formed near opposite side walls of the cooking chamber.Type: GrantFiled: November 9, 2001Date of Patent: April 1, 2003Assignee: LG Electronics Inc.Inventors: Seog Tae Kim, Seong Yun Ryu, Geun Hyung Lee
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Publication number: 20020056712Abstract: In a heater system for a microwave oven including an air tunnel having an suction portion and a discharge portion, formed at an upper surface of a cooking chamber, a fan assembly installed inside the air tunnel and having a circulation fan forming air flow by sucking air inside the cooking chamber through the suction portion and discharge the sucked air through the air tunnel and the discharge portion, a first heater chamber having a first heater installed inside the air tunnel and heating air discharged into the discharge portion from the air tunnel, and a second heater chamber having a second heater installed inside the air tunnel and emitting radiation heat into the cooking chamber, wherein the suction portion and the discharge portion are respectively formed at each end portions of the upper surface of the cooking chamber, said end portions facing each other and positioned toward the side walls of the cooking chamber.Type: ApplicationFiled: November 9, 2001Publication date: May 16, 2002Inventors: Seog Tae Kim, Seong Yun Ryu, Geun Hyung Lee