Patents by Inventor Norihide Kawachi
Norihide Kawachi 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: 10696128Abstract: A cold storage heat exchanger includes: a plurality of refrigerant tubes disposed at intervals, each of the refrigerant tubes including a refrigerant passage that allows a refrigerant to flow therethrough; a cold storage material adjacent to the refrigerant tubes; and a heat transfer suppressor that suppresses heat transfer from the refrigerant tubes to the cold storage material in an overheated area of the refrigerant formed in the refrigerant passage.Type: GrantFiled: September 23, 2016Date of Patent: June 30, 2020Assignee: DENSO CORPORATIONInventors: Jun Abei, Toshiya Nagasawa, Eiichi Torigoe, Naohisa Ishizaka, Norihide Kawachi, Yuusuke Kitou, Ken Nishimura, Masakazu Nagaya
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Patent number: 10677537Abstract: An evaporator includes multiple cold storage mechanisms for lowering a temperature of a cold storage material housed inside a cold storage container by heat exchange with a refrigerant. The multiple cold storage mechanisms include a first cold storage mechanism and a second cold storage mechanism higher in heat storage-and-radiation performance than the first cold storage mechanism.Type: GrantFiled: April 19, 2016Date of Patent: June 9, 2020Assignee: DENSO CORPORATIONInventors: Yuusuke Kitou, Jun Abei, Norihide Kawachi, Eiichi Torigoe, Shota Chatani
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Publication number: 20180306525Abstract: An evaporator includes multiple cold storage mechanisms for lowering a temperature of a cold storage material housed inside a cold storage container by heat exchange with a refrigerant. The multiple cold storage mechanisms include a first cold storage mechanism and a second cold storage mechanism higher in heat storage-and-radiation performance than the first cold storage mechanism.Type: ApplicationFiled: April 19, 2016Publication date: October 25, 2018Applicant: DENSO CORPORATIONInventors: Yuusuke KITOU, Jun ABEI, Norihide KAWACHI, Eiichi TORIGOE, Shota CHATANI
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Publication number: 20180281553Abstract: A cold storage heat exchanger includes: a plurality of refrigerant tubes disposed at intervals, each of the refrigerant tubes including a refrigerant passage that allows a refrigerant to flow therethrough; a cold storage material adjacent to the refrigerant tubes; and a heat transfer suppressor that suppresses heat transfer from the refrigerant tubes to the cold storage material in an overheated area of the refrigerant formed in the refrigerant passage.Type: ApplicationFiled: September 23, 2016Publication date: October 4, 2018Inventors: Jun ABEI, Toshiya NAGASAWA, Eiichi TORIGOE, Naohisa ISHIZAKA, Norihide KAWACHI, Yuusuke KITOU, Ken NISHIMURA, Masakazu NAGAYA
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Patent number: 7604044Abstract: There is provides a heat exchanger comprising: a plurality of tubes (110) stacked on each other; and a pair of header tanks (140), each header tank (140) having a flow section (151) in which fluid flows, extending in a direction of stack of the tubes (110), wherein both end sections (111) of the tubes (110) in the longitudinal direction are joined to the pair of header tanks (140), the flow section (151) of each header tank (140) and the inside of each tube (110) are communicated with each other, a tip position (a) of the tube end section (111) is arranged in an outside region of the flow section (151), and an inner wall width size (b) of the flow section (151) is smaller than a size (c) in the width direction of the header tank (140) at the tube end section (111).Type: GrantFiled: February 6, 2006Date of Patent: October 20, 2009Assignee: Denso CorporationInventors: Masaaki Kawakubo, Norihide Kawachi, Ken Muto, Ken Yamamoto, Etsuo Hasegawa, Yoshiki Katoh
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Publication number: 20070084589Abstract: In an evaporator, each fin is disposed between adjacent tubes in a tube stacking direction, and each of the tubes includes at least first and second tube parts lined to have a space therebetween in a flow direction of air passing between the adjacent tubes. The first tube part has therein a first refrigerant passage that is completely separately from a second refrigerant passage of the second tube part. Furthermore, the fin has at least one open portion that is opened from an end of the fin in the tube stacking direction to a predetermined portion, and the open portion is provided in the fin except for a position in the air flow direction, corresponding to the space. Therefore, the strength of the evaporator can be increased while condensed water on the evaporator can be effectively drained.Type: ApplicationFiled: October 16, 2006Publication date: April 19, 2007Applicant: DENSO CorporationInventors: Tatsuhiko Nishino, Norihide Kawachi
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Publication number: 20060151159Abstract: There is provides a heat exchanger comprising: a plurality of tubes (110) stacked on each other; and a pair of header tanks (140), each header tank (140) having a flow section (151) in which fluid flows, extending in a direction of stack of the tubes (110), wherein both end sections (111) of the tubes (110) in the longitudinal direction are joined to the pair of header tanks (140), the flow section (151) of each header tank (140) and the inside of each tube (110) are communicated with each other, a tip position (a) of the tube end section (111) is arranged in an outside region of the flow section (151), and an inner wall width size (b) of the flow section (151) is smaller than a size (c) in the width direction of the header tank (140) at the tube end section (111).Type: ApplicationFiled: February 6, 2006Publication date: July 13, 2006Inventors: Masaaki Kawakubo, Norihide Kawachi, Ken Muto, Ken Yamamoto, Etsuo Hasegawa, Yoshiki Katoh
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Patent number: 7044208Abstract: There is provides a heat exchanger comprising: a plurality of tubes (110) stacked on each other; and a pair of header tanks (140), each header tank (140) having a flow section (151) in which fluid flows, extending in a direction of stack of the tubes (110), wherein both end sections (111) of the tubes (110) in the longitudinal direction are joined to the pair of header tanks (140), the flow section (151) of each header tank (140) and the inside of each tube (110) are communicated with each other, a tip position (a) of the tube end section (111) is arranged in an outside region of the flow section (151), and an inner wall width size (b) of the flow section (151) is smaller than a size (c) in the width direction of the header tank (140) at the tube end section (111).Type: GrantFiled: February 10, 2003Date of Patent: May 16, 2006Assignee: DENSO CorporationInventors: Masaaki Kawakubo, Norihide Kawachi, Ken Muto, Ken Yamamoto, Etsuo Hasegawa, Yoshiki Katoh
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Patent number: 6935414Abstract: In a tube for a heat exchanger, a plurality of passages is defined. The passages are arranged in rows parallel to a major axis of the tube cross-section and staggered. When the tube is extruded, an extrusion material can flow around dies for forming passages and easily merge between the dies. Since walls between adjacent passages can be easily formed, formability of the tube is improved.Type: GrantFiled: October 8, 2002Date of Patent: August 30, 2005Assignee: DENSO CorporationInventors: Masaaki Kawakubo, Norihide Kawachi, Ken Yamamoto
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Patent number: 6883599Abstract: In a heat exchanger for performing heat exchange between a first fluid and a second fluid, a corrugated plate is provided in a first tube defining a first fluid passage through which the first fluid flows. The corrugated plate forms ridges and grooves. Walls between the ridges and grooves include first walls, second walls and third walls. Each first wall defines an opening between its second end and a second side wall of the first tube. Each second wall defines openings at its first and second ends. Each third wall defines an opening between its first end and the first side wall of the first tube. The first to third walls are reiterative in an order of the first wall, the second wall, the third wall and the second wall. Therefore, the first fluid makes double serpentine flows each of which makes alternately large and small turns.Type: GrantFiled: December 15, 2003Date of Patent: April 26, 2005Assignee: DENSO CorporationInventors: Ken Yamamoto, Takeshi Okinotani, Norihide Kawachi
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Publication number: 20050051311Abstract: In a heat exchanger for performing heat exchange between a first fluid and a second fluid, a corrugated plate is provided in a first tube defining a first fluid passage through which the first fluid flows. The corrugated plate forms ridges and grooves. Walls between the ridges and grooves include first walls, second walls and third walls. Each first wall defines an opening between its second end and a second side wall of the first tube. Each second wall defines openings at its first and second ends. Each third wall defines an opening between its first end and the first side wall of the first tube. The first to third walls are reiterative in an order of the first wall, the second wall, the third wall and the second wall. Therefore, the first fluid makes double serpentine flows each of which makes alternately large and small turns.Type: ApplicationFiled: December 15, 2003Publication date: March 10, 2005Inventors: Ken Yamamoto, Takeshi Okinotani, Norihide Kawachi
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Patent number: 6827139Abstract: A heat exchanger includes aligned tubes and upper and lower header tank units, each of which includes two fluid conduits communicated with the tubes. Each header tank unit further includes an intermediate plate, which defines a plurality of communication holes therethrough. Each communication hole communicates between a corresponding one of the tubes and a corresponding one of chambers defined by the fluid conduits of the header tank unit such that each tube is spaced apart from the corresponding one of the chambers.Type: GrantFiled: April 2, 2003Date of Patent: December 7, 2004Assignee: DENSO CorporationInventors: Masaaki Kawakubo, Ken Muto, Norihide Kawachi, Ken Yamamoto, Etsuo Hasegawa, Yoshiki Katoh
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Patent number: 6761306Abstract: A phosphorus-copper brazing material formed of a phosphorus-copper brazing alloy which can easily be cold-worked into a thin sheet, a brazing sheet having a brazing layer of the phosphorus-copper brazing alloy, and a flow path structure for heat exchangers constructed by brazing with the alloy, are such that the phosphorus-copper brazing material includes a phosphorus-copper brazing alloy containing Cu as a major component and phosphorus of not less than about 2.0 mass % to not more than about 3.2 mass %. The brazing sheet includes a metal sheet, and a brazing material layer that is integral with the metal sheet on at least one side of the metal sheet, the brazing material layer being formed of the phosphorus-copper brazing alloy. The metal sheet may be formed of copper or a copper alloy containing Cu as a major component.Type: GrantFiled: November 5, 2002Date of Patent: July 13, 2004Assignee: Sumitomo Special Metals Co, Ltd.Inventors: Masaaki Ishio, Tsuyoshi Hasegawa, Ken Yamamoto, Norihide Kawachi, Kenichiro Kamon
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Publication number: 20030188857Abstract: A heat exchanger includes aligned tubes and upper and lower header tank units, each of which includes two fluid conduits communicated with the tubes. Each header tank unit further includes an intermediate plate, which defines a plurality of communication holes therethrough. Each communication hole communicates between a corresponding one of the tubes and a corresponding one of chambers defined by the fluid conduits of the header tank unit such that each tube is spaced apart from the corresponding one of the chambers.Type: ApplicationFiled: April 2, 2003Publication date: October 9, 2003Inventors: Masaaki Kawakubo, Ken Muto, Norihide Kawachi, Ken Yamamoto, Etsuo Hasegawa, Yoshiki Katoh
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Publication number: 20030155109Abstract: There is provides a heat exchanger comprising: a plurality of tubes (110) stacked on each other; and a pair of header tanks (140), each header tank (140) having a flow section (151) in which fluid flows, extending in a direction of stack of the tubes (110), wherein both end sections (111) of the tubes (110) in the longitudinal direction are joined to the pair of header tanks (140), the flow section (151) of each header tank (140) and the inside of each tube (110) are communicated with each other, a tip position (a) of the tube end section (111) is arranged in an outside region of the flow section (151), and an inner wall width size (b) of the flow section (151) is smaller than a size (c) in the width direction of the header tank (140) at the tube end section (111).Type: ApplicationFiled: February 10, 2003Publication date: August 21, 2003Inventors: Masaaki Kawakubo, Norihide Kawachi, Ken Muto, Ken Yamamoto, Etsuo Hasegawa, Yoshiki Katoh
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Publication number: 20030085258Abstract: A phosphorus-copper brazing material formed of a phosphorus-copper brazing alloy which can easily be cold-worked into a thin sheet, a brazing sheet having a brazing layer of the phosphorus-copper brazing alloy, and a flow path structure for heat exchangers constructed by brazing with the alloy, are such that the phosphorus-copper brazing material includes a phosphorus-copper brazing alloy containing Cu as a major component and phosphorus of not less than about 2.0 mass % to not more than about 3.2 mass %. The brazing sheet includes a metal sheet, and a brazing material layer that is integral with the metal sheet on at least one side of the metal sheet, the brazing material layer being formed of the phosphorus-copper brazing alloy. The metal sheet may be formed of copper or a copper alloy containing Cu as a major component.Type: ApplicationFiled: November 5, 2002Publication date: May 8, 2003Applicant: Sumitomo Special Metals Company, Ltd.Inventors: Masaaki Ishio, Tsuyoshi Hasegawa, Ken Yamamoto, Norihide Kawachi, Kenichiro Kamon
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Publication number: 20030066636Abstract: In a tube for a heat exchanger, a plurality of passages is defined. The passages are arranged in rows parallel to a major axis of the tube cross-section and staggered. When the tube is extruded, an extrusion material can flow around dies for forming passages and easily merge between the dies. Since walls between adjacent passages can be easily formed, formability of the tube is improved.Type: ApplicationFiled: October 8, 2002Publication date: April 10, 2003Inventors: Masaaki Kawakubo, Norihide Kawachi, Ken Yamamoto
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Patent number: 6540015Abstract: A heat exchanger includes a first tube in which water flows and a second tube in which refrigerant flows, and performs heat exchange between water and refrigerant. The first tube and the second tube are bonded to each other by brazing at joint surfaces thereof such that water flow crosses refrigerant flow perpendicularly. The joint surface of the first tube is divided into several surface regions by grooves. Accordingly, the joint surface of the first tube can be brazed to the joint surface of the second tube uniformly.Type: GrantFiled: September 14, 2000Date of Patent: April 1, 2003Assignees: Denso Corporation, Tokyo Electric Power Company, Central Research Institute of Electric Power IndustryInventors: Norihide Kawachi, Ken Yamamoto, Takeshi Okinotani, Toshiya Kouga, Toshihiro Imai, Norimasa Baba, Tomoaki Kobayakawa, Kazutoshi Kusakari, Michiyuki Saikawa
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Patent number: 5943871Abstract: An expansion valve includes a temperature sensing rod made of metal, for sensing a temperature of refrigerant in an evaporator outlet side passage. A first pressure chamber and a second pressure chamber are separated by a diaphragm. The temperature sensing rod include a small-diameter shaft portion and a diaphragm stopper portion which is connected to an end of the small-diameter shaft portion and contacts the diaphragm. The evaporator outlet side passage and the second pressure chamber are communicated through a space. A heat transmission delay member made of resin is press-fitted to the temperature sensing rod, and includes a thin cylindrical portion which covers a part of the small-diameter shaft portion, placed in the evaporator outlet side passage, a thick cylindrical portion which covers a part of the small-diameter portion, placed in the space and the thick circular plate which covers the diaphragm stopper portion.Type: GrantFiled: August 29, 1997Date of Patent: August 31, 1999Assignee: Denso CorporationInventors: Yasunobu Ito, Teruyuki Hotta, Norihide Kawachi