Patents by Inventor Takuro Yamada
Takuro Yamada 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: 20200325376Abstract: A refrigeration cycle apparatus that is able to reduce the amount of refrigerant used while reducing a pressure loss in the case where a refrigerant containing at least 1,2-difluoroethylene is used is provided. In an air conditioner (1) including a refrigerant circuit (10), including a compressor (21), an outdoor heat exchanger (23), an outdoor expansion valve (24), and an indoor heat exchanger (31), and a refrigerant containing at least 1,2-difluoroethylene and sealed in the refrigerant circuit (10), the outdoor heat exchanger (23) has a heat transfer tube (23b) of which a pipe diameter is greater than or equal to 6.35 mm and less than 10.0 mm.Type: ApplicationFiled: June 25, 2020Publication date: October 15, 2020Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Eiji KUMAKURA, Takuro YAMADA, Atsushi YOSHIMI, Ikuhiro IWATA, Mitsushi ITANO, Daisuke KARUBE, Yuuki YOTSUMOTO, Kazuhiro TAKAHASHI, Tatsuya TAKAKUWA, Yuzo KOMATSU, Shun OHKUBO
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Publication number: 20200326105Abstract: A heat source unit and a refrigeration cycle apparatus that are able to reduce damage to a connection pipe when a refrigerant containing at least 1,2-difluoroethylene is used are provided. An outdoor unit (20) that is connected via a liquid-side connection pipe (6) and a gas-side connection pipe (5) to an indoor unit (30) including an indoor heat exchanger (31) and that is a component of an air conditioner (1) includes a compressor (21) and an outdoor heat exchanger (23). A refrigerant containing at least 1,2-difluoroethylene is used as a refrigerant. A design pressure of the outdoor unit (20) is lower than 1.5 times a design pressure of each of the liquid-side connection pipe (6) and the gas-side connection pipe (5).Type: ApplicationFiled: June 25, 2020Publication date: October 15, 2020Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Eiji KUMAKURA, Takuro YAMADA, Atsushi YOSHIMI, Ikuhiro IWATA, Mitsushi ITANO, Daisuke KARUBE, Yuuki YOTSUMOTO, Kazuhiro TAKAHASHI, Tatsuya TAKAKUWA, Yuzo KOMATSU, Shun OHKUBO
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Publication number: 20200325375Abstract: A refrigeration cycle apparatus capable of keeping a LCCP low when a heat cycle is performed using a sufficiently small-GWP refrigerant, and a method of determining a refrigerant enclosure amount in the refrigeration cycle apparatus are provided. An outdoor unit (20) including a compressor (21) and an outdoor heat exchanger (23), an indoor unit (30) including an indoor heat exchanger (31), and a refrigerant pipe (5, 6) that connects the outdoor unit (20) and the indoor unit (30) to each other are provided. A refrigerant containing at least 1,2-difluoroethylene is enclosed in a refrigerant circuit (10) that is constituted by connecting the compressor (21), the outdoor heat exchanger (23), and the indoor heat exchanger (31) to one another. An enclosure amount of the refrigerant in the refrigerant circuit (10) per 1 kW of refrigeration capacity satisfies a condition of 160 g or more and 560 g or less.Type: ApplicationFiled: June 25, 2020Publication date: October 15, 2020Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Eiji KUMAKURA, Takuro YAMADA, Atsushi YOSHIMI, Ikuhiro IWATA, Mitsushi ITANO, Daisuke KARUBE, Yuuki YOTSUMOTO, Kazuhiro TAKAHASHI, Yuzo KOMATSU, Shun OHKUBO, Tatsuya TAKAKUWA
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Patent number: 10800292Abstract: In a vehicle seat, a movable frame provided at a front end portion of a stationary frame is configured to be slidable frontward and rearward between a first position and a second position frontward of the first position. An outer covering provided to extend frontward from an upper side of the stationary frame is configured to wrap around a front end portion of the movable frame. First and second straps are provided to extend rearward from a front end of the outer covering and configured to pull the front end of the outer covering rearward. The front end of the outer covering from which the first and second straps extend is arranged under the stationary frame. The first strap and the second strap are in positions spaced out laterally from each other. The first strap and the second strap are being pulled laterally inward.Type: GrantFiled: January 11, 2019Date of Patent: October 13, 2020Assignees: TS TECH CO., LTD., HONDA MOTOR CO., LTD.Inventors: Masaru Tsukamoto, Muneyuki Nogami, Takuro Yamada, Daisuke Ogino, Ronald C. Cozzo, David A. Juarez, Masakazu Okada
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Publication number: 20200318875Abstract: A refrigeration apparatus includes: a heat source unit including a compressor for refrigerant and a heat-source-side heat exchanger; utilization units, each of which is connected in parallel to the heat source unit and includes a utilization-side heat exchanger; a refrigerant-flow-path switching unit that includes first gas-side control valves, each of which switches a flow of refrigerant in a corresponding one of the utilization units, and individually switches a flow of refrigerant in each of the utilization units; a first gas-side connection pipe disposed between the heat source unit and each of the first gas-side control valves and through which high-pressure gas refrigerant flows; first gas-side branch pipes, each of which is included in the first gas-side connection pipe and communicates with a corresponding one of the utilization units; and a blocking valve.Type: ApplicationFiled: September 29, 2017Publication date: October 8, 2020Inventors: Takuro YAMADA, Yuusuke NAKAGAWA, Yuusuke OKA, Masahiro HONDA
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Patent number: 10793025Abstract: A vehicle seat comprising a stationary frame, a movable frame and a cushion pad is disclosed. The movable frame is provided at a front end portion of the stationary frame and configured to be slidable frontward and rearward between a first position and a second position that is frontward of the first position. The cushion pad is provided to extend frontward from an upper side of the stationary frame and configured to wrap around a front end portion of the movable frame. The movable frame has an upper surface including a curved surface bulging upwardly.Type: GrantFiled: January 11, 2019Date of Patent: October 6, 2020Assignees: TS TECH CO., LTD., HONDA MOTOR CO., LTD.Inventors: Masaru Tsukamoto, Muneyuki Nogami, Takuro Yamada, Ronald C. Cozzo, David A. Juarez, Masakazu Okada
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Publication number: 20200309437Abstract: A refrigeration cycle apparatus capable of keeping a LCCP low when a heat cycle is performed using a sufficiently small-GWP refrigerant, and a method of determining a refrigerant enclosure amount in the refrigeration cycle apparatus are provided. An outdoor unit (20) including a compressor (21) and an outdoor heat exchanger (23), an indoor unit (30) including an indoor heat exchanger (31), and a refrigerant pipe (5, 6) that connects the outdoor unit (20) and the indoor unit (30) to each other are provided. A refrigerant containing at least 1,2-difluoroethylene is enclosed in a refrigerant circuit (10) that is constituted by connecting the compressor (21), the outdoor heat exchanger (23), and the indoor heat exchanger (31) to one another. An enclosure amount of the refrigerant in the refrigerant circuit (10) per 1 kW of refrigeration capacity satisfies a condition of 160 g or more and 560 g or less.Type: ApplicationFiled: December 10, 2018Publication date: October 1, 2020Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Eiji KUMAKURA, Takuro YAMADA, Atsushi YOSHIMI, Ikuhiro IWATA, Mitsushi ITANO, Daisuke KARUBE, Yuuki YOTSUMOTO, Kazuhiro TAKAHASHI, Yuzo KOMATSU, Shun OHKUBO, Tatsuya TAKAKUWA
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Publication number: 20200309419Abstract: A refrigeration cycle apparatus that is able to reduce the amount of refrigerant used while reducing a pressure loss in the case where a refrigerant containing at least 1,2-difluoroethylene is used is provided. In an air conditioner (1) including a refrigerant circuit (10), including a compressor (21), an outdoor heat exchanger (23), an outdoor expansion valve (24), and an indoor heat exchanger (31), and a refrigerant containing at least 1,2-difluoroethylene and sealed in the refrigerant circuit (10), the outdoor heat exchanger (23) has a heat transfer tube (23b) of which a pipe diameter is greater than or equal to 6.35 mm and less than 10.0 mm.Type: ApplicationFiled: December 18, 2018Publication date: October 1, 2020Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Eiji KUMAKURA, Takuro YAMADA, Atsushi YOSHIMI, Ikuhiro IWATA, Mitsushi ITANO, Daisuke KARUBE, Yuuki YOTSUMOTO, Kazuhiro TAKAHASHI, Tatsuya TAKAKUWA, Yuzo KOMATSU, Shun OHKUBO
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Patent number: 10717371Abstract: In a vehicle seat, a cushion pad includes a center portion and left and right side portions disposed, respectively, at left and right sides of the center portion. The cushion pad has a first slit provided between the center portion and each of the left and right side portions. The outer covering includes a center cover disposed to cover the center portion, and left and right side covers disposed to cover the left and right side portions, respectively. The outer covering has a second slit provided between the center cover and each of the left and right side covers. Left and right movement restriction plates are fixed to the left and right side covers, respectively. A cushion frame includes left and right engageable portions disposed, respectively, adjacent to the left and right movement restriction plates in positions laterally outward of the movement restriction plates.Type: GrantFiled: January 11, 2019Date of Patent: July 21, 2020Assignees: TS TECH CO., LTD., HONDA MOTOR CO., LTD.Inventors: Masaru Tsukamoto, Muneyuki Nogami, Takuro Yamada, Ronald C. Cozzo, David A. Juarez, Masakazu Okada, Travis M. Reel
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Patent number: 10712035Abstract: When refrigerant leakage occurs, a controller in an air conditioner performs first shutoff control to open a liquid relay shutoff valve and close an indoor expansion valve and a gas relay shutoff valve on the basis of information from a refrigerant leakage detector.Type: GrantFiled: November 21, 2019Date of Patent: July 14, 2020Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Takuro Yamada, Yuusuke Nakagawa, Yuusuke Oka
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Patent number: 10670282Abstract: To reduce noise coming from an indoor unit in an air conditioning apparatus that has an outdoor unit that has a compressor and an outdoor heat exchanger, the indoor unit that has an indoor heat exchanger, and a liquid refrigerant connection pipe and a gas refrigerant connection pipe that interconnect both units and in which a liquid pressure adjusting expansion valve that reduces a pressure of a refrigerant flowing through the liquid refrigerant connection pipe in such a way that the refrigerant is in a gas-liquid two-phase state is provided in an outdoor liquid refrigerant pipe that interconnects the liquid-side end of the outdoor heat exchanger and the liquid refrigerant connection pipe. An external expansion valve unit having an external expansion valve that further reduces the pressure of the refrigerant whose pressure has been reduced in the liquid pressure adjusting expansion valve is provided in the outdoor liquid refrigerant pipe.Type: GrantFiled: September 26, 2017Date of Patent: June 2, 2020Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Takuro Yamada, Masahiro Honda, Yuusuke Nakagawa, Yuusuke Oka
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Publication number: 20200141609Abstract: An air conditioning system capable of reducing noise incidental to gas-liquid two-phase transfer is provided. The air conditioning system (100) performs a refrigeration cycle in a refrigerant circuit (RC) including an outdoor unit (10), a plurality of indoor units (40), and a liquid-side connection pipe (LC) connecting the outdoor unit (10) and the indoor units (40). The air conditioning system (100) includes a second outdoor control valve (17, electric valve) decompressing the refrigerant flowing in the refrigerant circuit (RC) in accordance with an opening degree, an operating-capacity variation detection portion (74, detection portion) detecting change of the number of operating units in accordance with device information, and a device control portion (75, control portion) controlling a state of the second outdoor control valve (17).Type: ApplicationFiled: July 13, 2018Publication date: May 7, 2020Inventors: Yuusuke NAKAGAWA, Makoto KOJIMA, Takuro YAMADA
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Publication number: 20200116400Abstract: A refrigerant-channel branching component for connecting a connection pipe connected to an outdoor unit with a connection pipe directed toward a plurality of indoor units, the refrigerant-channel branching component includes: an inlet portion; and outlet portions. At least one of the plurality of outlet portions includes: a reference space into which a reference connection pipe with a predetermined outside diameter is inserted; a first space that is adjacent to the reference space and has an inside diameter greater than an inside diameter of the reference connection pipe; and a second space that is adjacent to the first space and has an inside diameter greater than the inside diameter of the first space.Type: ApplicationFiled: July 17, 2018Publication date: April 16, 2020Inventors: Makoto KOJIMA, Takuro YAMADA
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Publication number: 20200088431Abstract: When refrigerant leakage occurs, a controller in an air conditioner performs first shutoff control to open a liquid relay shutoff valve and close an indoor expansion valve and a gas relay shutoff valve on the basis of information from a refrigerant leakage detector.Type: ApplicationFiled: November 21, 2019Publication date: March 19, 2020Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takuro YAMADA, Yuusuke NAKAGAWA, Yuusuke OKA
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Publication number: 20200031345Abstract: Disclosed is a vehicle control apparatus applied to a vehicle including an automatic transmission. The vehicle control apparatus includes a friction brake apparatus for generating friction braking force acting on the vehicle, and a driving support ECU for performing cruise control. The driving support ECU causes the automatic transmission to perform downshift upon satisfaction of a downshift condition which is satisfied when a friction brake high load state continues for a predetermined determination threshold time.Type: ApplicationFiled: July 16, 2019Publication date: January 30, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroshi YAMADA, Takuro YAMADA
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Publication number: 20200033036Abstract: In a refrigeration apparatus including a refrigerant circuit in which a refrigerant in a gas-liquid two-phase state flows through a liquid-side connection pipe, a refrigerant-amount determining method and a refrigerant-amount determining device capable of grasping an appropriate refrigerant charging amount corresponding to the length of the connection pipe is provided.Type: ApplicationFiled: September 29, 2017Publication date: January 30, 2020Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takuro YAMADA, Yuusuke NAKAGAWA, Masahiro HONDA, Yuusuke OKA, Hiroki SASAYAMA
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Patent number: 10533764Abstract: When refrigerant leakage occurs, a controller in an air conditioner performs first shutoff control to open a liquid relay shutoff valve and close an indoor expansion valve and a gas relay shutoff valve on the basis of information from a refrigerant leakage detector.Type: GrantFiled: April 16, 2019Date of Patent: January 14, 2020Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Takuro Yamada, Yuusuke Nakagawa, Yuusuke Oka
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Publication number: 20190338986Abstract: To reduce noise coming from an indoor unit in an air conditioning apparatus that has an outdoor unit that has a compressor and an outdoor heat exchanger, the indoor unit that has an indoor heat exchanger, and a liquid refrigerant connection pipe and a gas refrigerant connection pipe that interconnect both units and in which a liquid pressure adjusting expansion valve that reduces a pressure of a refrigerant flowing through the liquid refrigerant connection pipe in such a way that the refrigerant is in a gas-liquid two-phase state is provided in an outdoor liquid refrigerant pipe that interconnects the liquid-side end of the outdoor heat exchanger and the liquid refrigerant connection pipe. An external expansion valve unit having an external expansion valve that further reduces the pressure of the refrigerant whose pressure has been reduced in the liquid pressure adjusting expansion valve is provided in the outdoor liquid refrigerant pipe.Type: ApplicationFiled: September 26, 2017Publication date: November 7, 2019Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takuro YAMADA, Masahiro HONDA, Yuusuke NAKAGAWA, Yuusuke OKA
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Publication number: 20190293417Abstract: A pipe diameter determination method for determining a pipe diameter of a liquid-side connection pipe of a refrigeration apparatus that performs a cooling operation and a heating operation where the refrigeration apparatus includes an outdoor unit that has a compressor and an outdoor heat exchanger; indoor unit that has an indoor heat exchanger, and the liquid-side connection pipe and a gas-side connection pipe that connect the outdoor unit and the indoor unit with each other is provided. The pipe diameter determination method includes: determining the pipe diameter of the liquid-side connection pipe based on a cooling capacity and a heating capacity provided by the outdoor unit and the indoor unit that are installed.Type: ApplicationFiled: November 30, 2017Publication date: September 26, 2019Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takuro YAMADA, Yuusuke NAKAGAWA, Masahiro HONDA
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Publication number: 20190249912Abstract: An air conditioner includes: liquid-side indoor expansion valves corresponding to a liquid side of respective indoor heat exchangers; and gas-side indoor expansion valves corresponding to a gas side of the respective indoor heat exchangers. In a case where both a heating-operation indoor heat exchanger and a heating-stopped indoor heat exchanger are present, the controller of the air conditioner controls the liquid-side indoor expansion valve and the gas-side indoor expansion valve corresponding to the heating-stopped indoor heat exchanger such that an opening degree of the gas-side indoor expansion valve becomes smaller than an opening degree of the liquid-side indoor expansion valve.Type: ApplicationFiled: September 29, 2017Publication date: August 15, 2019Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takuro YAMADA, Yuusuke NAKAGAWA, Masahiro HONDA, Yuusuke OKA