Patents by Inventor Ja-Hyung Koo
Ja-Hyung Koo 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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Patent number: 11110391Abstract: A system for oxidizing nitrogen monoxide (NO) contained in exhaust gas injects a liquid oxidizing agent into the exhaust gas and simultaneously removes nitrogen oxides and sulfur oxides from exhaust gas using an organic catalyst. The system includes an absorption tank for storing an absorption solution containing an organic catalyst, the absorption tank communicating with an oxygen supply pipe for supplying oxygen-containing gas to the absorption tank; an absorption tower, extending upward from the absorption tank, through which the exhaust gas flows from an exhaust gas inlet duct to an exhaust gas outlet; a first injection unit to inject the absorption solution into the absorption tower; a second injection unit to inject an oxidizing agent solution into at least one of the inlet duct and the absorption tower; and an oxidizing agent supply unit for supplying the oxidizing agent solution to the second injection unit.Type: GrantFiled: January 10, 2019Date of Patent: September 7, 2021Assignee: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.Inventors: Joon Ho Kim, Ho Yong Jo, Ja Hyung Koo, In Gab Chang
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Patent number: 11065576Abstract: A wet flue gas desulfurization apparatus includes an absorption tank in which an absorption solution containing an alkaline absorbent is stored; an absorption tower extending upward from the absorption tank; a flue gas inlet duct communicating with a first portion of the absorption tower; a flue gas outlet duct communicating with a second portion of the absorption tower; a spray unit to spray the absorption solution inside the absorption tower; a circulation pump to pump the absorption solution from the absorption tank and to supply the absorption solution to the spray unit; a byproduct discharging unit to discharge a byproduct downward from the absorption tank; and an oxygen supply pipe through which an oxygen-containing gas is supplied to a target point in the absorption tank, the target point being adjustable along a vertical direction or a horizontal direction, enabling adjustment of an internal position to which the gas is supplied.Type: GrantFiled: January 9, 2019Date of Patent: July 20, 2021Assignee: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.Inventors: In Gab Chang, Ja Hyung Koo, Joon Ho Kim, Sang Gun Na
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Patent number: 10526669Abstract: The present invention relates to a method and system for recovering carbonate from steel slag, in which it is possible to extract carbonate from steel slag and reuse the extracted carbonate, and to recycle steel slag and make use of CO2 gas without emission to the atmosphere. Since unreacted metal ions and an acidic solvent are reused in the method and system, it is possible to increase carbonate extraction efficiency and reduce an amount of waste.Type: GrantFiled: July 25, 2017Date of Patent: January 7, 2020Assignee: Doosan Heavy Industries Construction Co., LtdInventors: Jang Yong You, Ja Hyung Koo, Kwang Hee Shin, You Seok Kim
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Publication number: 20190224616Abstract: A system for oxidizing nitrogen monoxide (NO) contained in exhaust gas injects a liquid oxidizing agent into the exhaust gas and simultaneously removes nitrogen oxides and sulfur oxides from exhaust gas using an organic catalyst. The system includes an absorption tank for storing an absorption solution containing an organic catalyst, the absorption tank communicating with an oxygen supply pipe for supplying oxygen-containing gas to the absorption tank; an absorption tower, extending upward from the absorption tank, through which the exhaust gas flows from an exhaust gas inlet duct to an exhaust gas outlet; a first injection unit to inject the absorption solution into the absorption tower; a second injection unit to inject an oxidizing agent solution into at least one of the inlet duct and the absorption tower; and an oxidizing agent supply unit for supplying the oxidizing agent solution to the second injection unit.Type: ApplicationFiled: January 10, 2019Publication date: July 25, 2019Inventors: Joon Ho Kim, Ho Yong Jo, Ja Hyung Koo, In Gab Chang
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Publication number: 20190224619Abstract: A wet flue gas desulfurization apparatus includes an absorption tank in which an absorption solution containing an alkaline absorbent is stored; an absorption tower extending upward from the absorption tank; a flue gas inlet duct communicating with a first portion of the absorption tower; a flue gas outlet duct communicating with a second portion of the absorption tower; a spray unit to spray the absorption solution inside the absorption tower; a circulation pump to pump the absorption solution from the absorption tank and to supply the absorption solution to the spray unit; a byproduct discharging unit to discharge a byproduct downward from the absorption tank; and an oxygen supply pipe through which an oxygen-containing gas is supplied to a target point in the absorption tank, the target point being adjustable along a vertical direction or a horizontal direction, enabling adjustment of an internal position to which the gas is supplied.Type: ApplicationFiled: January 9, 2019Publication date: July 25, 2019Inventors: In Gab Chang, Ja Hyung Koo, Joon Ho Kim, Sang Gun Na
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Publication number: 20180171421Abstract: The present invention relates to a method and system for recovering carbonate from steel slag, in which it is possible to extract carbonate from steel slag and reuse the extracted carbonate, and to recycle steel slag and make use of CO2 gas without emission to the atmosphere. Since unreacted metal ions and an acidic solvent are reused in the method and system, it is possible to increase carbonate extraction efficiency and reduce an amount of waste.Type: ApplicationFiled: July 25, 2017Publication date: June 21, 2018Inventors: Jang Yong You, Ja Hyung Koo, Kwang Hee Shin, You Seok Kim
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Patent number: 8545193Abstract: Fan apparatus for an air conditioner including a fan (50), a shaft (68) coupled to the fan (50), a rotor (60) for transmission of driving force to the shaft (68) for rotating the fan (50), a stator (65) on an inside of the rotor (60) to form a BLDC motor together with the rotor (60), and a fan housing (40) for enclosing the fan (50), thereby reducing noise and enhancing fan (50) efficiency.Type: GrantFiled: August 19, 2004Date of Patent: October 1, 2013Assignee: LG Electronics Inc.Inventors: In Gyu Kim, Byung Il Park, Ja Hyung Koo, Yang Ho Kim, Kyeong Wook Heo, Si-Kyong Sung, Dong Hyuk Lee, Young Ho Hong, Tae Geun Kim
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Patent number: 8292575Abstract: A fan apparatus and an air conditioner employing such a fan apparatus are provided to reduce noise and enhance efficiency. The fan apparatus may be driven by a BLDC motor that stably drives the fan and increases an air flow rate. Heat exchange efficiency of an outdoor unit of a front suction/discharge type air conditioner may be improved by such a fan apparatus driven by such a BLDC motor.Type: GrantFiled: August 19, 2004Date of Patent: October 23, 2012Assignee: LG Electronics Inc.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, Tae Geun Kim
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Patent number: 8286445Abstract: A water-cooled air conditioning system includes an indoor unit having a first heat exchanger where air and refrigerant are heat-exchanged with each other, an outdoor unit having a second heat exchanger where water and the refrigerant are heat-exchanged with each other, a cooling tower for cooling the water directed to the second heat exchanger, a discharge duct for guiding the air conditioned in the indoor unit to an indoor space for an air conditioning, and an intake duct for guiding the air in the indoor space to the indoor unit. The second heat exchanger is a plate type heat exchanger having a space that is divided into a plurality of sections along which the refrigerant and the cooling water separately flow.Type: GrantFiled: May 31, 2007Date of Patent: October 16, 2012Assignee: LG Electronics Inc.Inventors: In Woong Park, Ja Hyung Koo, Seung Cheol Baek, Soo Yeon Shin, Dong Hyuk Lee
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Patent number: 8281614Abstract: A water-cooled air conditioner is provided, and includes an indoor unit, an outdoor unit, a cooling tower, and a boiler. The indoor unit cools or heats a space, and includes a first heat exchanger that performs heat exchange between air and refrigerant. The outdoor unit is installed separately from the indoor unit and includes a second heat exchanger that performs heat exchange between water and refrigerant. The cooling tower is connected to the outdoor unit, and cools water flowing to the second heat exchanger. The boiler is connected to the outdoor unit, and increases a temperature of the water flowing to the second heat exchanger. The second heat exchanger is formed with a plurality of thin plates separated from one another by predetermined gaps through which refrigerant and water flow. The second heat exchanger includes an anti-freezing device that prevents freezing of water within the second heat exchanger.Type: GrantFiled: June 18, 2007Date of Patent: October 9, 2012Assignee: LG Electronics Inc.Inventors: Ja Hyung Koo, In Woong Park, Seung Cheol Baek, Soo Yeon Shin, Dong Hyuk Lee
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Patent number: 7918104Abstract: A water cooling type air conditioner is provided. The water cooling type air conditioner includes first and second heat exchangers, a refrigerant pipe, and a direction controlling unit. The first heat exchanger performs heat exchange between air and refrigerant. The second heat exchanger performs heat exchange between the refrigerant and cooling water. The refrigerant pipe is connected between the first heat exchanger and the second heat exchanger to guide a flow of the refrigerant. The direction controlling unit is disposed on one side of the second heat exchanger and controls the refrigerant and the cooling water flowing inside the second heat exchanger to flow in respectively opposite directions.Type: GrantFiled: May 8, 2007Date of Patent: April 5, 2011Assignee: LG Electronics Inc.Inventors: In Woong Park, Ja Hyung Koo, Seung Cheol Baek, Soo Yoon Shin, Dong Hyuk Lee, Chang Ryul Kim, Man Ho Chun, Hyoung Suk Woo, Yong Taeg Kim, Sung Rok Ryu
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Patent number: 7775054Abstract: The air conditioner includes a first and a second heat exchanger, a plurality of compressors, a pipe for uniform distribution of oil, a plurality of oil separators, and an oil return opening. The first heat exchanger performs heat exchange between air of an indoor space and refrigerant to condition the air. The second heat exchanger is connected to the first heat exchanger through a pipe, to perform heat exchange between the refrigerant and water. The plurality of compressors is installed at one side of the second heat exchanger, to compress the refrigerant to a high temperature and a high pressure. The pipe for uniform distribution of oil communicates the plurality of compressors with each other, to guide a flow of oil within the plurality of compressors to flow between the compressors. Each oil separator is provided at an outlet of a respective compressor, to separate oil included in refrigerant discharged from the compressors.Type: GrantFiled: April 23, 2007Date of Patent: August 17, 2010Assignee: LG Electronics Inc.Inventors: In Kyu Kim, Ja Hyung Koo, Sim Won Chin, Soo Yeon Shin
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Patent number: 7707851Abstract: An air conditioner is provided. The air conditioner includes two or more heat exchangers, a refrigerant pipe, a compressor, an accumulator, and an overcooler. The heat exchangers perform heat exchanging between air or water and refrigerant. The refrigerant pipe guides refrigerant circulating between the two or more heat exchangers. The compressor compresses refrigerant flowing in the refrigerant pipe to a high temperature and pressure. The accumulator is provided on one side of the compressor, to separate an inflowing refrigerant into a liquid refrigerant and a gaseous refrigerant. The overcooler is provided on one side of the heat exchangers, to further cool refrigerant passing through the heat exchangers.Type: GrantFiled: June 20, 2007Date of Patent: May 4, 2010Assignee: LG Electronics Inc.Inventors: In Woong Park, Ja Hyung Koo, Seung Cheol Baek, Soo Yeon Shin, Dong Hyuk Lee
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Publication number: 20080127671Abstract: 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: ApplicationFiled: August 19, 2004Publication date: June 5, 2008Inventors: 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
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Publication number: 20080131274Abstract: 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: ApplicationFiled: August 19, 2004Publication date: June 5, 2008Inventors: 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
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Publication number: 20080087028Abstract: An air conditioner is provided. The air conditioner includes a first and a second heat exchanger, a plurality of compressors, a uniform oil pipe, a plurality of oil separators, and an oil return opening. The first heat exchanger performs heat exchange between air of an indoor space and refrigerant to condition the air. The second heat exchanger is connected to the first heat exchanger through a pipe, to perform heat exchange between the refrigerant and water. The plurality of compressors is installed at one side of the second heat exchanger, to compress the refrigerant to a high temperature and a high pressure. The uniform oil pipe communicates the plurality of compressors with each other, to guide a flow of oil within the plurality of compressors to flow between the compressors. Each oil separator is provided at an outlet of a respective compressor, to separate oil included in refrigerant discharged from the compressors.Type: ApplicationFiled: April 23, 2007Publication date: April 17, 2008Applicant: LG ELECTRONICS INC.Inventors: In Kyu Kim, Ja Hyung Koo, Sim Won Chin, Soo Yeon Shin
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Publication number: 20080087027Abstract: A water-cooled air conditioner is provided, and includes an indoor unit, an outdoor unit, a cooling tower, and a boiler. The indoor unit cools or heats a space, and includes a first heat exchanger that performs heat exchange between air and refrigerant. The outdoor unit is installed separately from the indoor unit and includes a second heat exchanger that performs heat exchange between water and refrigerant. The cooling tower is connected to the outdoor unit, and cools water flowing to the second heat exchanger. The boiler is connected to the outdoor unit, and increases a temperature of the water flowing to the second heat exchanger. The second heat exchanger is formed with a plurality of thin plates separated from one another by predetermined gaps through which refrigerant and water flow. The second heat exchanger includes an anti-freezing device that prevents freezing of water within the second heat exchanger.Type: ApplicationFiled: June 18, 2007Publication date: April 17, 2008Inventors: In Woong Park, Ja Hyung Koo, Seung Cheol Baek, Soo Yeon Shin, Dong Hyuk Lee
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Publication number: 20080087031Abstract: An air conditioner is provided. The air conditioner includes two or more heat exchangers, a refrigerant pipe, a compressor, an accumulator, and an overcooler. The heat exchangers perform heat exchanging between air or water and refrigerant. The refrigerant pipe guides refrigerant circulating between the two or more heat exchangers. The compressor compresses refrigerant flowing in the refrigerant pipe to a high temperature and pressure. The accumulator is provided on one side of the compressor, to separate an inflowing refrigerant into a liquid refrigerant and a gaseous refrigerant. The overcooler is provided on one side of the heat exchangers, to further cool refrigerant passing through the heat exchangers.Type: ApplicationFiled: June 20, 2007Publication date: April 17, 2008Applicant: LG ELECTRONICS INC.Inventors: In Woong Park, Ja Hyung Koo, Seung Cheol Baek, Soo Yeon Shin, Dong Hyuk Lee
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Publication number: 20080087030Abstract: A water-cooled air conditioning system includes an indoor unit having a first heat exchanger where air and refrigerant are heat-exchanged with each other, an outdoor unit having a second heat exchanger where water and the refrigerant are heat-exchanged with each other, a cooling tower for cooling the water directed to the second heat exchanger, a discharge duct for guiding the air conditioned in the indoor unit to an indoor space for an air conditioning, and an intake duct for guiding the air in the indoor space to the indoor unit. The second heat exchanger is a plate type heat exchanger having a space that is divided into a plurality of sections along which the refrigerant and the cooling water separately flow.Type: ApplicationFiled: May 31, 2007Publication date: April 17, 2008Inventors: In Woong Park, Ja Hyung Koo, Seung Cheol Baek, Soo Yeon Shin, Dong Hyuk Lee
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Publication number: 20080053142Abstract: A water cooling type air conditioner is provided. The water cooling type air conditioner includes first and second heat exchangers, a refrigerant pipe, and a direction controlling unit. The first heat exchanger performs heat exchange between air and refrigerant. The second heat exchanger performs heat exchange between the refrigerant and cooling water. The refrigerant pipe is connected between the first heat exchanger and the second heat exchanger to guide a flow of the refrigerant. The direction controlling unit is disposed on one side of the second heat exchanger and controls the refrigerant and the cooling water flowing inside the second heat exchanger to flow in respectively opposite directions.Type: ApplicationFiled: May 8, 2007Publication date: March 6, 2008Applicant: LG ELECTRONICS INC.Inventors: In Woong Park, Ja Hyung Koo, Seung Cheol Baek, Soo Yeon Shin, Dong Hyuk Lee, Chang Ryul Kim, Man Ho Chun, Hyoung Suk Woo, Yong Taeg Kim, Sung Rok Ryu