Patents by Inventor Dae-Whan Kim
Dae-Whan Kim 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: 11644230Abstract: Provide is a refrigerator provided with a defrosting device capable of enhancing the defrosting efficiency. The refrigerator includes main body, storage compartment provided inside the main body, an evaporator provided in the storage compartment and configured to generate cold air, a first flow path allowing air to be guided in a first direction for the air to be supplied to the storage compartment during a cooling operation, a defrosting heater configured to generate heat for defrost, a second flow path allowing air to be guided in a second direction opposite to the first direction for the air to be circulated around the evaporator during a defrosting operation, a fan allowing air having received heat from the defrosting heater to be circuited around the evaporator through the second flow path, and a flow path resistance portion provided on the second flow path to increase a flow path resistance in the first direction.Type: GrantFiled: February 19, 2019Date of Patent: May 9, 2023Assignee: Samsung Electronics Co., Ltd.Inventors: In Sub Lee, Kook Jeong Seo, Dae Whan Kim, Hee Yuel Roh, Jeong-Min Jeon, Young Don Jeong
-
Patent number: 11359855Abstract: A refrigerator includes a storage compartment; a first flow path separated from the storage compartment; an evaporator provided on the first flow path to cool air; a compressor configured to discharge a refrigerant to the evaporator; a blower fan configured to discharge air of the first flow path to the storage compartment; a defrost heater provided on the first flow path to heat the evaporator; a second flow path separated from the first flow path; a defrost fan configured to suction air of the first flow path into the second flow path; and a controller configured to alternately perform a cooling operation and a defrosting operation, configured to operate the compressor and the blower fan during the cooling operation, configured to operate the defrost heater and the defrost fan during the defrosting operation, and configured to vary a rotational speed of the defrost fan.Type: GrantFiled: November 27, 2019Date of Patent: June 14, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hee Yuel Roh, Kook Jeong Seo, In Sub Lee, Dae Whan Kim, Jeong-Min Jeon
-
Publication number: 20210010740Abstract: Provide is a refrigerator provided with a defrosting device capable of enhancing the defrosting efficiency. The refrigerator includes main body, storage compartment provided inside the main body, an evaporator provided in the storage compartment and configured to generate cold air, a first flow path allowing air to be guided in a first direction for the air to be supplied to the storage compartment during a cooling operation, a defrosting heater configured to generate heat for defrost, a second flow path allowing air to be guided in a second direction opposite to the first direction for the air to be circulated around the evaporator during a defrosting operation, a fan allowing air having received heat from the defrosting heater to be circuited around the evaporator through the second flow path, and a flow path resistance portion provided on the second flow path to increase a flow path resistance in the first direction.Type: ApplicationFiled: February 19, 2019Publication date: January 14, 2021Inventors: In Sub LEE, Kook Jeong SEO, Dae Whan KIM, Hee Yuel ROH, Jeong-Min JEON, Young Don JEONG
-
Patent number: 10760147Abstract: The disclose relates to ordered Alloy 690 comprising: a matrix that includes a short range order (SRO) in a state in which nickel (Ni) is enriched, and chromium (Cr) and iron (Fe) are depleted, and the ordered Alloy 690 is characterized by having excellent resistance to stress corrosion cracking and improved thermal conductivity due to agglomeration of nickel (Ni) atoms, as compared with the unordered Alloy 690.Type: GrantFiled: May 9, 2019Date of Patent: September 1, 2020Assignee: KOREA ATOMIC ENERGY RESEARCH INSITUTEInventors: Young-Suk Kim, Sung-Soo Kim, Dae-Whan Kim
-
Patent number: 10697051Abstract: The present invention relates to a method for manufacturing Alloy 690 ordered alloy to be used in a steam generator tube serving as a heat exchanger in a nuclear power plant (hereinafter, referred to as NPP), and Alloy 690 ordered alloy manufactured thereby, and provides a method for manufacturing Alloy 690 ordered alloy with improved thermal conductivity, and Alloy 690 ordered alloy manufactured thereby, the method comprising the steps of: solution-annealing Alloy 690; cooling the solution-annealed Alloy 690 to a first temperature of 200° C./min or less; and ordering the cooled Alloy 690 in the temperature range of 410-520° C.Type: GrantFiled: December 3, 2015Date of Patent: June 30, 2020Assignee: Korea Atomic Energy Research InstituteInventors: Young-Suk Kim, Sung-Soo Kim, Dae-Whan Kim
-
Publication number: 20200173709Abstract: A refrigerator includes a storage compartment; a first flow path separated from the storage compartment; an evaporator provided on the first flow path to cool air; a compressor configured to discharge a refrigerant to the evaporator; a blower fan configured to discharge air of the first flow path to the storage compartment; a defrost heater provided on the first flow path to heat the evaporator; a second flow path separated from the first flow path; a defrost fan configured to suction air of the first flow path into the second flow path; and a controller configured to alternately perform a cooling operation and a defrosting operation, configured to operate the compressor and the blower fan during the cooling operation, configured to operate the defrost heater and the defrost fan during the defrosting operation, and configured to vary a rotational speed of the defrost fan.Type: ApplicationFiled: November 27, 2019Publication date: June 4, 2020Applicant: Samsung Electronics Co., Ltd.Inventors: Hee Yuel ROH, Kook Jeong SEO, In Sub LEE, Dae Whan KIM, Jeong-Min JEON
-
Publication number: 20190330715Abstract: The disclose relates to ordered Alloy 690 comprising: a matrix that includes a short range order (SRO) in a state in which nickel (Ni) is enriched, and chromium (Cr) and iron (Fe) are depleted, and the ordered Alloy 690 is characterized by having excellent resistance to stress corrosion cracking and improved thermal conductivity due to agglomeration of nickel (Ni) atoms, as compared with the unordered Alloy 690.Type: ApplicationFiled: May 9, 2019Publication date: October 31, 2019Inventors: Young-Suk KIM, Sung-Soo KIM, Dae-Whan KIM
-
Patent number: 10287664Abstract: The present invention relates to ordered Alloy 690 with improved thermal conductivity. By maintaining Alloy 690 in a temperature range of 350-570° C. for a proper amount of time, the atomic arrangement is controlled to properly form the ordered phases. The ordered phases formed in the ordered Alloy 690 increases its thermal conductivity due to a low thermal scattering effect of the ordered phase as observed in pure metals.Type: GrantFiled: June 5, 2014Date of Patent: May 14, 2019Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTEInventors: Young-Suk Kim, Sung-Soo Kim, Dae-Whan Kim
-
Publication number: 20170327934Abstract: The present invention relates to a method for manufacturing Alloy 690 ordered alloy to be used in a steam generator tube serving as a heat exchanger in a nuclear power plant (hereinafter, referred to as NPP), and Alloy 690 ordered alloy manufactured thereby, and provides a method for manufacturing Alloy 690 ordered alloy with improved thermal conductivity, and Alloy 690 ordered alloy manufactured thereby, the method comprising the steps of: solution-annealing Alloy 690; cooling the solution-annealed Alloy 690 to a first temperature of 200° C./min or less; and ordering the cooled Alloy 690 in the temperature range of 410-520° C.Type: ApplicationFiled: December 3, 2015Publication date: November 16, 2017Applicant: Korea Atomic Energy Research InstituteInventors: Young-Suk Kim, Sung-soo Kim, Dae-Whan Kim
-
Patent number: 9696083Abstract: Disclosed herein is a refrigerator which has an improved structure to increase insulating properties. The refrigerator includes a body including an inner casing and an outer casing, a storage compartment formed in the inner casing, an insulator provided between the inner casing and the outer casing to insulate the storage compartment, and a frame unit which is disposed between the adjacent insulators to ensure stiffness of the body and includes at least one coupling surface coupled with at least one of the inner casing and the outer casing.Type: GrantFiled: October 16, 2015Date of Patent: July 4, 2017Assignees: SAMSUNG ELECTRONICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Dae Whan Kim, Keon Kuk, Tae-Ho Song, Sung-Kie Youn, Kang Wonkyeong, Pilseong Kang, Yeo Inseok, Jaehyug Lee, Gil-Eon Jeong, Choi Bongsu
-
Patent number: 9562843Abstract: A method of non-destructive evaluation of stress corrosion cracking of structural components made of metal alloys, and a method of evaluation of the remaining lifetime of the structural component made of metal alloys are provided, in which a change in properties of the structural components made of metal alloys being used in operating nuclear power plants is measured according to the degree of atomic ordering (or short range ordering) of alloying atoms, and stress corrosion cracking of the structural components made of metal alloys is thus evaluated. The properties to be measured may be one or more selected from a group consisting of hardness, electrical resistivity and thermal conductivity.Type: GrantFiled: November 25, 2014Date of Patent: February 7, 2017Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTEInventors: Young-Suk Kim, Sung-Soo Kim, Dae-Whan Kim
-
Publication number: 20160161395Abstract: A method of non-destructive evaluation of stress corrosion cracking of structural components made of metal alloys, and a method of evaluation of the remaining lifetime of the structural component made of metal alloys are provided, in which a change in properties of the structural components made of metal alloys being used in operating nuclear power plants is measured according to the degree of atomic ordering (or short range ordering) of alloying atoms, and stress corrosion cracking of the structural components made of metal alloys is thus evaluated. The properties to be measured may be one or more selected from a group consisting of hardness, electrical resistivity and thermal conductivity.Type: ApplicationFiled: November 25, 2014Publication date: June 9, 2016Inventors: Young-Suk Kim, Sung-Soo Kim, Dae-Whan Kim
-
Publication number: 20160145730Abstract: The present invention relates to ordered Alloy 690 with improved thermal conductivity. By maintaining Alloy 690 in a temperature range of 350-570° C. for a proper amount of time, the atomic arrangement is controlled to properly form the ordered phases. The ordered phases formed in the ordered Alloy 690 increases its thermal conductivity due to a low thermal scattering effect of the ordered phase as observed in pure metals.Type: ApplicationFiled: June 5, 2014Publication date: May 26, 2016Inventors: Young-Suk KIM, Sung-Soo KIM, Dae-Whan KIM
-
Publication number: 20160109172Abstract: Disclosed herein is a refrigerator which has an improved structure to increase insulating properties. The refrigerator includes a body including an inner casing and an outer casing, a storage compartment formed in the inner casing, an insulator provided between the inner casing and the outer casing to insulate the storage compartment, and a frame unit which is disposed between the adjacent insulators to ensure stiffness of the body and includes at least one coupling surface coupled with at least one of the inner casing and the outer casing.Type: ApplicationFiled: October 16, 2015Publication date: April 21, 2016Applicants: SAMSUNG ELECTRONICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Dae Whan KIM, Keon KUK, Tae-Ho SONG, Sung-Kie YOUN, Kang WONKYEONG, Pilseong KANG, Yeo INSEOK, Jaehyug LEE, Gil-Eon JEONG, Choi BONGSU
-
Patent number: 5681406Abstract: A method for manufacturing a delayed hydride cracking resistant zirconium ahoy (Zircaloy-2, Zircaloy-4, Zr-2.5% Nb, pure Zr, etc.) pressure tube includes the steps of making a seamless pressure tube having a diameter smaller than the final size by extrusion or drawing, and then expanding the tube at a temperature below 600.degree. C. by cross rolling.Type: GrantFiled: May 25, 1994Date of Patent: October 28, 1997Assignee: Korea Atomic Energy Research InstituteInventors: Seong-Su Kim, Dae-Whan Kim, Joon-Wha Hong, Young-Whan Kang