Patents by Inventor Takeshi Okinotani
Takeshi Okinotani 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: 20230050599Abstract: A heat exchanger includes a plurality of fins that are spaced from each other and are arranged to divide a heat medium flow passage into a plurality of narrow passages. Each fin incudes a plurality of thick wall portions and a plurality of thin wall portions which are alternately arranged in a passage longitudinal direction. Each adjacent two of the plurality of fins, which are adjacent to each other, are defined as one fine and another fin, and each of the plurality of thick wall portions of the one fin is opposed to an adjacent one of the plurality of thin wall portions of the another fin in a fin arrangement direction, and each of the plurality of thin wall portions of the one fin is opposed to an adjacent one of the plurality of thick wall portions of the another fin in the fin arrangement direction.Type: ApplicationFiled: November 3, 2022Publication date: February 16, 2023Inventors: Yuya SAITO, Yuuki SUZUKI, Yuusuke TODA, Takeshi OKINOTANI
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Patent number: 11255618Abstract: In this flat extruded aluminum multi-port tube, the corrosion-resistance, at inner surfaces of a plurality of flow passages independently and parallelly extending in the tube axial direction, is effectively enhanced. In a flat extruded aluminum multi-port tube 10 formed by an extrusion by employing an aluminum tube material and an aluminum sacrificial anode material having an electrochemically lower potential than the aluminum tube material, the aluminum sacrificial anode material is exposed to form a sacrificial anode portion 18 at least in a part of an inner circumferential portion in each of the plurality of flow passages 12.Type: GrantFiled: December 18, 2019Date of Patent: February 22, 2022Assignees: UACJ CORPORATION, UACJ EXTRUSION CORPORATION, DENSO CORPORATIONInventors: Shinichi Nakamura, Naoki Yamashita, Seiichi Nagao, Satoshi Shibata, Kazuhisa Naitou, Takeshi Okinotani, Susumu Ichikawa, Akira Itoh
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Patent number: 10859327Abstract: A heat exchanger includes a stacked body that is configured by tubes stacked in a stacking direction and a header tank. The header tank includes a plate header and a tank body. The tubes include longitudinal ends attached to the plate header. The plate header includes a tube insertion hole provided with a stopper. One of the longitudinal ends of the plurality of tubes is inserted into the tube insertion hole. The stopper sets a position of the one of the longitudinal ends in the tube insertion hole. The stopper is provided with the tube insertion hole, and has a width dimension that is smaller than both of a width dimension of the tube insertion hole and a width dimension of the one of the longitudinal ends of the plurality of tubes when viewed in the stacking direction.Type: GrantFiled: September 9, 2016Date of Patent: December 8, 2020Assignee: DENSO CORPORATIONInventors: Syunsuke Tsubota, Takeshi Okinotani
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Publication number: 20200124362Abstract: In this flat extruded aluminum multi-port tube, the corrosion-resistance, at inner surfaces of a plurality of flow passages independently and parallelly extending in the tube axial direction, is effectively enhanced. In a flat extruded aluminum multi-port tube 10 formed by an extrusion by employing an aluminum tube material and an aluminum sacrificial anode material having an electrochemically lower potential than the aluminum tube material, the aluminum sacrificial anode material is exposed to form a sacrificial anode portion 18 at least in a part of an inner circumferential portion in each of the plurality of flow passages 12.Type: ApplicationFiled: December 18, 2019Publication date: April 23, 2020Applicants: UACJ CORPORATION, UACJ EXTRUSION CORPORATION, DENSO CORPORATIONInventors: Shinichi NAKAMURA, Naoki YAMASHITA, Seiichi NAGAO, Satoshi SHIBATA, Kazuhisa NAITOU, Takeshi OKINOTANI, Susumu ICHIKAWA, Akira ITOH
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Patent number: 10337808Abstract: A condenser has a core part having tubes, a first modulator tank and a second modulator tank. The first modulator tank is provided along a side portion of a header tank. The second modulator tank communicates with an interior of the first modulator tank and is provided along a lower edge of the core part in a gravity direction. An interior of the header tank is provided with a communicating space that communicates with the interior of the first modulator tank and an interior of the second modulator tank. The header tank has an introduction passage that guides liquid-phase refrigerant in the communicating space to a supercooling portion of the core part. A first connection part between the communicating space and the introduction passage is disposed on a lower side, in the gravity direction, of a second connection part between the communicating space and the second modulator tank.Type: GrantFiled: June 29, 2015Date of Patent: July 2, 2019Assignee: DENSO CORPORATIONInventors: Kazuhisa Naitou, Takeshi Okinotani, Etsuo Hasegawa
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Patent number: 10317147Abstract: A tank has a tank body defining a passage therein, a plate to which tubes are attached, and an intermediate plate. The tank body has a space defining part and a tank junction part attached to the intermediate plate. A longitudinal direction and a stacking direction of the tubes are perpendicular to a width direction. The space defining part has two end parts facing each other in the width direction and connecting to two of the tank junction part respectively. The tank body has a junction end surface that has an arc shape protruding toward the passage. The intermediate plate has a part corresponding to the junction end surface and being provided with a receiving surface that has an arc shape fitting the arc shape of the junction end surface. The receiving surface is attached to the junction end surface.Type: GrantFiled: March 18, 2016Date of Patent: June 11, 2019Assignee: DENSO CORPORATIONInventors: Ken Mutou, Takeshi Okinotani, Syunsuke Tsubota
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Publication number: 20180259269Abstract: A heat exchanger includes a stacked body that is configured by tubes stacked in a stacking direction and a header tank. The header tank includes a plate header and a tank body. The tubes include longitudinal ends attached to the plate header. The plate header includes a tube insertion hole provided with a stopper. One of the longitudinal ends of the plurality of tubes is inserted into the tube insertion hole. The stopper sets a position of the one of the longitudinal ends in the tube insertion hole. The stopper is provided with the tube insertion hole, and has a width dimension that is smaller than both of a width dimension of the tube insertion hole and a width dimension of the one of the longitudinal ends of the plurality of tubes when viewed in the stacking direction.Type: ApplicationFiled: September 9, 2016Publication date: September 13, 2018Inventors: Syunsuke TSUBOTA, Takeshi OKINOTANI
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Publication number: 20180164052Abstract: In this flat extruded aluminum multi-port tube, the corrosion-resistance, at inner surfaces of a plurality of flow passages independently and parallelly extending in the tube axial direction, is effectively enhanced. In a flat extruded aluminum multi-port tube 10 formed by an extrusion by employing an aluminum tube material and an aluminum sacrificial anode material having an electrochemically lower potential than the aluminum tube material, the aluminum sacrificial anode material is exposed to form a sacrificial anode portion 18 at least in a part of an inner circumferential portion in each of the plurality of flow passages 12.Type: ApplicationFiled: February 6, 2018Publication date: June 14, 2018Applicants: UACJ CORPORATION, UACJ EXTRUSION CORPORATION, DENSO CORPORATIONInventors: Shinichi NAKAMURA, Naoki YAMASHITA, Seiichi NAGAO, Satoshi SHIBATA, Kazuhisa NAITOU, Takeshi OKINOTANI, Susumu ICHIKAWA, Akira ITOH
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Publication number: 20180023903Abstract: A tank has a tank body defining a passage therein, a plate to which tubes are attached, and an intermediate plate. The tank body has a space defining part and a tank junction part attached to the intermediate plate. A longitudinal direction and a stacking direction of the tubes are perpendicular to a width direction. The space defining part has two end parts facing each other in the width direction and connecting to two of the tank junction part respectively. The tank body has a junction end surface that has an arc shape protruding toward the passage. The intermediate plate has a part corresponding to the junction end surface and being provided with a receiving surface that has an arc shape fitting the arc shape of the junction end surface. The receiving surface is attached to the junction end surface.Type: ApplicationFiled: March 18, 2016Publication date: January 25, 2018Inventors: Ken MUTOU, Takeshi OKINOTANI, Syunsuke TSUBOTA
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Publication number: 20170050489Abstract: A condenser has a core part having tubes, a first modulator tank and a second modulator tank. The first modulator tank is provided along a side portion of a header tank. The second modulator tank communicates with an interior of the first modulator tank and is provided along a lower edge of the core part in a gravity direction. An interior of the header tank is provided with a communicating space that communicates with the interior of the first modulator tank and an interior of the second modulator tank. The header tank has an introduction passage that guides liquid-phase refrigerant in the communicating space to a supercooling portion of the core part. A first connection part between the communicating space and the introduction passage is disposed on a lower side, in the gravity direction, of a second connection part between the communicating space and the second modulator tank.Type: ApplicationFiled: June 29, 2015Publication date: February 23, 2017Inventors: Kazuhisa NAITOU, Takeshi OKINOTANI, Etsuo HASEGAWA
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Publication number: 20070227714Abstract: A heat exchanger has a flat tube and a header in communication with the flat tube. The flat tube has a flat passage part and a groove part. The flat passage part defines a fluid passage therein. The groove part extends along the flat passage part. An end of the groove part is recessed from an end of the flat passage part in a longitudinal direction of the flat tube. The header has a tube insertion hole having a shape corresponding to an outline of the flat passage part. The end of the flat passage part is received in and fixed to the tube insertion hole of the header.Type: ApplicationFiled: March 29, 2007Publication date: October 4, 2007Applicant: DENSO CorporationInventors: Hirokazu Takeuchi, Takeshi Okinotani, Akira Yanagida, Yukinori Hatano, Shizuo Maruo
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Publication number: 20070199686Abstract: A heat exchanger includes flat tubes and corrugated fins. The corrugated fin includes peak portions contacting the adjacent tubes, and flat portions for making air to pass therebetween in an air flow direction. The flat portion has a first area including pairs of end louvers provided in end portions of the flat portion in a width direction between the adjacent tubes, and a flat part provided between the end louvers in the width direction. The pairs of the end louvers are arranged in the flat portion in the air flow direction. The first area is provided at least one of an upstream end portion and a downstream end portion of the flat portion in the air flow direction.Type: ApplicationFiled: February 9, 2007Publication date: August 30, 2007Applicant: DENSO CorporationInventors: Takeshi Okinotani, Hirokazu Takeuchi, Akira Yanagida, Shizuo Maruo
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Publication number: 20060175047Abstract: A heat exchanger comprises: a plurality of plate-shaped fins, which are laminated on each other at predetermined intervals, on which a plurality of insertion holes having burring portions are formed; and a plurality of tubes inserted into the insertion holes, wherein the burring portions and the tubes are brazed to each other, and at least the burring portions of the plate-shaped fins are composed of a plurality of metallic layers for displacing the burring portions to the side of the insertion holes according to a rise in temperature at the time of brazing.Type: ApplicationFiled: February 6, 2006Publication date: August 10, 2006Applicant: DENSO CorporationInventors: Takashi Hattori, Hiroshi Nishikawa, Takeshi Okinotani, Yuuji Sako
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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: 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