Patents by Inventor Ryuichi Nagata
Ryuichi Nagata 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: 11976838Abstract: An air-conditioning apparatus includes a casing provided with an air inlet through which air is sucked and an air outlet through which the air is blown out, heat exchangers being connected in parallel, and causing heat exchange to be performed between the air sucked from the air inlet and refrigerant, fans each sending the air to a corresponding one of the heat exchangers, and a controller. The controller controls the fans so that they have different rotational speeds.Type: GrantFiled: January 7, 2020Date of Patent: May 7, 2024Assignee: Mitsubishi Electric CorporationInventors: Ryuichi Nagata, Masanori Sato, Yusuke Tashiro
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Patent number: 11972611Abstract: A controller is provided that is configured to perform: obtaining information about a condition for an image that is provided to a user, and that corresponds to a preference of the user; specifying at least one predetermined position at which an image satisfying the condition can be taken; and generating a command for a moving object to move to the predetermined position and to take an image, and transmitting the command to the moving object.Type: GrantFiled: June 29, 2021Date of Patent: April 30, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Satoshi Komamine, Yurika Tanaka, Kenichi Yamada, Ryuichi Kamaga, Ai Miyata, Yu Nagata, Shintaro Matsutani
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Publication number: 20240068699Abstract: An air conditioning apparatus includes a refrigerant circuit and a controller. The refrigerant circuit is configured to allow refrigerant to circulate through a compressor, a condenser, an LEV, and an evaporator. The LEV has an opening degree variable from a lower limit opening degree to an upper limit opening degree. The controller is configured to control the LEV to alternately repeat a first opening degree and a second opening degree in a range of less than or equal to a quarter of the upper limit opening degree, the second opening degree being smaller than the first opening degree.Type: ApplicationFiled: February 17, 2021Publication date: February 29, 2024Inventors: Ryuichi NAGATA, Yusuke TASHIRO
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Patent number: 11912124Abstract: A tractor includes: a vehicle body; an engine bonnet that forms an engine compartment; an engine disposed in the engine compartment; a first exhaust-gas cleaning device that is disposed in the engine compartment and purifies exhaust gas discharged by the engine; and a second exhaust-gas cleaning device that is disposed in the engine compartment and purifies the exhaust gas, the first exhaust-gas cleaning device being disposed above the engine such that a long side of the first exhaust-gas cleaning device is substantially parallel to a vehicle-body lateral width direction, the second exhaust-gas cleaning device being disposed behind the engine such that a long side of the second exhaust-gas cleaning device is substantially parallel to the vehicle-body lateral width orientation, and a maximum vertical length of the first exhaust-gas cleaning device is shorter than a maximum longitudinal length of the first exhaust-gas cleaning device.Type: GrantFiled: October 28, 2022Date of Patent: February 27, 2024Assignee: Kubota CorporationInventors: Yoshiyuki Tamaki, Kyota Inoue, Ryuichi Inoue, Masaru Shinya, Satoshi Nagata
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Publication number: 20230366592Abstract: A cold source unit is connectable to an indoor heat exchanger and is provided for a refrigerant circuit. The cold source unit includes: a compressor; an outdoor heat exchanger having a gas header; an oil return path through which refrigeration oil is returned from the gas header to the compressor; an oil return adjusting unit configured to adjust a flow rate of refrigeration oil flowing through the oil return path; and a controller configured to control the refrigerant circuit. The controller is configured to control the oil return adjusting unit to prevent refrigeration oil from flowing through the oil return path when the compressor is driven at a frequency equal to or higher than a threshold value, and control the oil return adjusting unit to allow the refrigeration oil to flow through the oil return path when the compressor is driven at a frequency lower than the threshold value.Type: ApplicationFiled: October 21, 2020Publication date: November 16, 2023Inventor: Ryuichi NAGATA
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Publication number: 20230204304Abstract: The heat exchanger includes: a plurality of fins disposed, spaced apart from each other; and a plurality of heat transfer tubes inserted in the plurality of fins. The plurality of heat transfer tubes have round profiles. The plurality of heat transfer tubes have outer circumferential surfaces in contact with the plurality of fins. The plurality of heat transfer tubes have outer diameters of 5.4 mm or less. The plurality of fins and the heat transfer tubes are disposed so that ratios of thicknesses of the plurality of fins to the outer diameters are 0.03 or greater.Type: ApplicationFiled: July 21, 2020Publication date: June 29, 2023Inventor: Ryuichi NAGATA
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Patent number: 11662148Abstract: In a heat exchanger, each of a plurality of heat exchange members includes: a flat pipe; and a heat transfer plate integrated with the flat pipe along a longitudinal direction of the flat pipe. A width direction of each of the flat pipes intersects with a direction in which the plurality of heat exchange members are arranged side by side. Each of the heat transfer plates includes an extending portion extending outward in the width direction of each of the flat pipes from at least one of one end of a corresponding one of the flat pipes in the width direction and another end of the corresponding one of the flat pipes in the width direction. Each of the flat pipes has one or more flat pipe bent portions, each forming a groove extending along the longitudinal direction of the flat pipes.Type: GrantFiled: August 3, 2017Date of Patent: May 30, 2023Assignees: Mitsubishi Electric Corporation, The University of TokyoInventors: Akira Ishibashi, Tsuyoshi Maeda, Shinya Higashiiue, Daisuke Ito, Shin Nakamura, Ryota Akaiwa, Akira Yatsuyanagi, Ryuichi Nagata, Eiji Hihara, Chaobin Dang, Jiyang Li
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Patent number: 11573056Abstract: A heat exchanger, a heat exchanger unit, and a refrigeration cycle apparatus in which frost melt water is inhibited from reaching an upper surface of a header include: heat transfer tubes arranged in parallel with each other; a fin connected to one of the heat transfer tubes; and a header connected to the heat transfer tubes and having a header end surface along a direction in which the heat transfer tubes are arranged in parallel. The fin has an edge facing the header and extends in a first direction perpendicular to the axes of the heat transfer tubes. An end portion of the fin projects in the first direction relative to the header end surface, and another end portion of the fin in the first direction is positioned closer in the first direction to the heat transfer tubes than the header end surface is.Type: GrantFiled: July 11, 2018Date of Patent: February 7, 2023Assignee: Mitsubishi Electric CorporationInventors: Akira Yatsuyanagi, Akira Ishibashi, Tsuyoshi Maeda, Shin Nakamura, Ryuichi Nagata
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Patent number: 11555660Abstract: Provided is a refrigerant distributor including: a first space forming portion having a first refrigerant port and a second refrigerant port; and a second space forming portion, which extends laterally from a lower part of the first space forming portion, and has a plurality of heat transfer pipe connecting portions. A gas-liquid refrigerant mixture flows into the first space forming portion through the first refrigerant port. Heat transfer pipes are connected at positions of the plurality of heat transfer pipe connecting portions in the second space forming portion.Type: GrantFiled: August 3, 2017Date of Patent: January 17, 2023Assignees: Mitsubishi Electric Corporation, The University of TokyoInventors: Shinya Higashiiue, Tsuyoshi Maeda, Akira Ishibashi, Ryuichi Nagata, Eiji Hihara, Chaobin Dang, Jiyang Li
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Publication number: 20220397301Abstract: An air-conditioning apparatus includes a casing provided with an air inlet through which air is sucked and an air outlet through which the air is blown out, a plurality of heat exchangers being connected in parallel, and causing heat exchange to be performed between the air sucked from the air inlet and refrigerant, a plurality of fans each sending the air to a corresponding one of the plurality of heat exchangers, and a controller configured to control the plurality of fans so that they have different rotational speeds.Type: ApplicationFiled: January 7, 2020Publication date: December 15, 2022Inventors: Ryuichi NAGATA, Masanori SATO, Yusuke TASHIRO
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Patent number: 11460228Abstract: An outdoor heat exchanger includes: a main heat exchange area; a sub heat exchange area; and a connecting pipe and a connecting pipe interconnecting the main heat exchange area and the sub heat exchange area. The main heat exchange area has a main heat exchange channel and a main heat exchange channel. The sub heat exchange area has a sub heat exchange channel, a sub heat exchange channel, and a sub heat exchange channel. The connecting pipe connects the sub heat exchange channel and the sub heat exchange channel to the main heat exchange channel while the sub heat exchange channels are joined together. The connecting pipe interconnects the sub heat exchange channel and the main heat exchange channel.Type: GrantFiled: January 18, 2018Date of Patent: October 4, 2022Assignee: Mitsubishi Electric CorporationInventors: Ryuichi Nagata, Tsuyoshi Maeda, Shin Nakamura, Akira Ishibashi
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Publication number: 20220136740Abstract: An object is to provide a refrigeration cycle apparatus capable of reducing freezing in a lower part of a heat exchanger in which drainage water tends to accumulate and reducing an amount of refrigerant in a refrigerant circuit. The refrigeration cycle apparatus includes the refrigerant circuit 1 connecting, by refrigerant pipes, a compressor, a first expansion device, and a first heat exchanger configured to serve as evaporator during heating operation. The first heat exchanger is provided with a first heat exchange unit and a second heat exchange unit connected to the first heat exchange unit in series in the refrigerant circuit. The first expansion device is connected in parallel with the second heat exchange unit in the refrigerant circuit, and the second heat exchange unit is placed at a position lower than a position of the first heat exchange unit.Type: ApplicationFiled: March 28, 2019Publication date: May 5, 2022Inventors: Shin NAKAMURA, Tsuyoshi MAEDA, Akira YATSUYANAGI, Atsushi MORITA, Ryuichi NAGATA, Shinya HIGASHIIUE, Akira ISHIBASHI, Shigeyoshi MATSUI, Atsushi TAKAHASHI
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Patent number: 11280528Abstract: Provided is a heat exchanger, including: a refrigerant distributor including: a gas-liquid separating portion having a function of separating a gas-liquid refrigerant mixture into a liquid refrigerant and a gas refrigerant; and a distributing portion provided to the gas-liquid separating portion. A plurality of heat transfer pipes connected to the distributing portion. The plurality of heat transfer pipes are arranged side by side in a first direction, and extend along a second direction intersecting with the first direction. When the refrigerant distributor is viewed along a direction orthogonal to each of the first direction and the second direction, a first space forming portion overlaps a region of the plurality of heat transfer pipes. When the refrigerant distributor and the heat transfer pipes are viewed along the first direction, a clearance is present between the gas-liquid separating portion and the heat transfer pipes.Type: GrantFiled: August 3, 2017Date of Patent: March 22, 2022Assignees: Mitsubishi Electric Corporation, The University of TokyoInventors: Shinya Higashiiue, Tsuyoshi Maeda, Akira Ishibashi, Ryuichi Nagata, Eiji Hihara, Chaobin Dang, Jiyang Li
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Patent number: 11262132Abstract: In a heat exchanger, each of a plurality of heat exchange members includes: a main body portion including a heat transfer pipe; and extending portions provided to the main body. The extending portions extend from ends of the main body portion in a third direction. When a dimension of the main body portion in the third direction is represented by La, a dimension of the extending portions in the third direction is represented by Lf, a dimension of a wall thickness of each of the heat transfer pipes is represented by tp, and a thickness dimension of each of the extending portions is represented by Tf, relationships: Lf/La?1 and Tf?tp are satisfied.Type: GrantFiled: August 3, 2017Date of Patent: March 1, 2022Assignees: Mitsubishi Electric Corporation, The University of TokyoInventors: Tsuyoshi Maeda, Shinya Higashiiue, Akira Ishibashi, Ryuichi Nagata, Eiji Hihara, Chaobin Dang, Jiyang Li
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Publication number: 20210108864Abstract: An object is to provide a heat exchanger, a heat exchanger unit, and a refrigeration cycle apparatus in which frost melt water is inhibited from reaching an upper surface of a header and the heat exchange performance and the reliability are improved. The invention includes: a plurality of heat transfer tubes arranged in parallel with each other; a fin connected to at least one of the plurality of heat transfer tubes; and a header having a header end surface being a surface along a direction in which the plurality of heat transfer tubes are arranged in parallel with each other, the header being connected to one end portions of the plurality of heat transfer tubes.Type: ApplicationFiled: July 11, 2018Publication date: April 15, 2021Inventors: Akira YATSUYANAGI, Akira ISHIBASHI, Tsuyoshi MAEDA, Shin NAKAMURA, Ryuichi NAGATA
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Publication number: 20210018232Abstract: An outdoor heat exchanger includes: a main heat exchange area; a sub heat exchange area; and a connecting pipe and a connecting pipe interconnecting the main heat exchange area and the sub heat exchange area. The main heat exchange area has a main heat exchange channel and a main heat exchange channel. The sub heat exchange area has a sub heat exchange channel, a sub heat exchange channel, and a sub heat exchange channel. The connecting pipe connects the sub heat exchange channel and the sub heat exchange channel to the main heat exchange channel while the sub heat exchange channels are joined together. The connecting pipe interconnects the sub heat exchange channel and the main heat exchange channel.Type: ApplicationFiled: January 18, 2018Publication date: January 21, 2021Inventors: Ryuichi NAGATA, Tsuyoshi MAEDA, Shin NAKAMURA, Akira ISHIBASHI
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Publication number: 20200217590Abstract: In a heat exchanger, each of a plurality of heat exchange members includes: a main body portion including a heat transfer pipe; and extending portions provided to the main body. The extending portions extend from ends of the main body portion in a third direction. When a dimension of the main body portion in the third direction is represented by La, a dimension of the extending portions in the third direction is represented by Lf, a dimension of a wall thickness of each of the heat transfer pipes is represented by tp, and a thickness dimension of each of the extending portions is represented by Tf, relationships: Lf/La?1 and Tf?tp are satisfied.Type: ApplicationFiled: August 3, 2017Publication date: July 9, 2020Inventors: Tsuyoshi MAEDA, Shinya HIGASHIIUE, Akira ISHIBASHI, Ryuichi NAGATA, Eiji HIHARA, Chaobin DANG, Jiyang LI
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Publication number: 20200166253Abstract: Provided is a heat exchanger, including: a refrigerant distributor including: a gas-liquid separating portion having a function of separating a gas-liquid refrigerant mixture into a liquid refrigerant and a gas refrigerant; and a distributing portion provided to the gas-liquid separating portion. A plurality of heat transfer pipes connected to the distributing portion. The plurality of heat transfer pipes are arranged side by side in a first direction, and extend along a second direction intersecting with the first direction. When the refrigerant distributor is viewed along a direction orthogonal to each of the first direction and the second direction, a first space forming portion overlaps a region of the plurality of heat transfer pipes. When the refrigerant distributor and the heat transfer pipes are viewed along the first direction, a clearance is present between the gas-liquid separating portion and the heat transfer pipes.Type: ApplicationFiled: August 3, 2017Publication date: May 28, 2020Inventors: Shinya HIGASHIIUE, Tsuyoshi MAEDA, Akira ISHIBASHI, Ryuichi NAGATA, Eiji HIHARA, Chaobin DANG, Jiyang LI
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Publication number: 20200149818Abstract: In a heat exchanger, each of a plurality of heat exchange members includes: a flat pipe; and a heat transfer plate integrated with the flat pipe along a longitudinal direction of the flat pipe. A width direction of each of the flat pipes intersects with a direction in which the plurality of heat exchange members are arranged side by side. Each of the heat transfer plates includes an extending portion extending outward in the width direction of each of the flat pipes from at least one of one end of a corresponding one of the flat pipes in the width direction and another end of the corresponding one of the flat pipes in the width direction. Each of the flat pipes has one or more flat pipe bent portions, each forming a groove extending along the longitudinal direction of the flat pipes.Type: ApplicationFiled: August 3, 2017Publication date: May 14, 2020Inventors: Akira ISHIBASHI, Tsuyoshi MAEDA, Shinya HIGASHIIUE, Daisuke ITO, Shin NAKAMURA, Ryota AKAIWA, Akira YATSUYANAGI, Ryuichi NAGATA, Eiji HIHARA, Chaobin DANG, Jiyang LI
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Publication number: 20200149828Abstract: Provided is a refrigerant distributor including: a first space forming portion having a first refrigerant port and a second refrigerant port; and a second space forming portion, which extends laterally from a lower part of the first space forming portion, and has a plurality of heat transfer pipe connecting portions. A gas-liquid refrigerant mixture flows into the first space forming portion through the first refrigerant port. Heat transfer pipes are connected at positions of the plurality of heat transfer pipe connecting portions in the second space forming portion.Type: ApplicationFiled: August 3, 2017Publication date: May 14, 2020Inventors: Shinya HIGASHIIUE, Tsuyoshi MAEDA, Akira ISHIBASHI, Ryuichi NAGATA, Eiji HIHARA, Chaobin DANG, Jiyang LI