Patents by Inventor Masayuki Takeuchi

Masayuki Takeuchi 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).

  • Publication number: 20220016591
    Abstract: A hydrogen generation device capable of generating hydrogen using an inexpensive material is provided. The hydrogen generation device includes: a water flow path unit through which a solution flows in from outside and exits; a hydrogen generation unit made of a metal, the hydrogen generation unit generating hydrogen by a reaction with the flowing-in solution; and a hydrogen collection unit for collecting the generated hydrogen, wherein the hydrogen generation unit is disposed so that friction with the flowing-in solution peels off a surface film of the metal to expose an active surface of the metal, the metal being the hydrogen generation unit itself.
    Type: Application
    Filed: November 12, 2019
    Publication date: January 20, 2022
    Inventors: Yosuke Takeuchi, Masayuki Tsuda, Yoko Ono, Takuya Kamisho
  • Patent number: 11205820
    Abstract: In an upper cell unit (2146) and a lower cell unit (2147) comprising five battery cells, positive electrode terminals (2162, 2172) are set apart and aligned vertically, and negative electrode terminals (2167, 2177) are set apart and aligned vertically. When an electrical device body is rated at 36V, device-side terminals are in contact only at the upper terminals (2162, 2167), and short circuiting of the lower terminals (2172, 2177) is effected using a short bar 2059. When the electrical device body is rated at 18V, the upper and lower terminals (2162 and 2172, 2167 and 2177) are simultaneously made to contact the device-side terminals, and the upper cell unit (2146) and the lower cell unit (2147) assume a parallel connected state. Thus, it is possible to automatically switch the output voltage when a battery pack is mounted according to the difference in terminal shape on the electrical device body side.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: December 21, 2021
    Assignee: Koki Holdings Co., Ltd.
    Inventors: Hiroyuki Hanawa, Tomomasa Nishikawa, Shota Kanno, Toshio Mizoguchi, Yasushi Nakano, Kazuhiko Funabashi, Takuya Teranishi, Naoto Wakatabe, Shinji Watanabe, Junpei Sato, Hikaru Tamura, Nobuhiro Takano, Osamu Kawanobe, Hayato Yamaguchi, Akira Matsushita, Masaru Hirano, Takuhiro Murakami, Masayuki Ogura, Yusuke Funabiki, Junichi Toukairin, Shota Takeuchi
  • Publication number: 20210280925
    Abstract: In a device temperature regulator, an evaporator cools a target device by a latent heat of evaporation of a working fluid that absorbs heat from the target device and is evaporated. A first condenser includes a first heat exchange passage that condenses the working fluid evaporated in the evaporator by a heat exchange with an outside first medium. A second condenser includes a second heat exchange passage that condenses the working fluid evaporated in the evaporator by a heat exchange with an outside second medium. A gas-phase passage causes the working fluid evaporated in the evaporator to flow to the first condenser and the second condenser. Furthermore, a first liquid-phase passage causes the working fluid condensed in the first condenser to flow to the evaporator, and a second liquid-phase passage causes the working fluid condensed in the second condenser to flow to the evaporator.
    Type: Application
    Filed: August 2, 2017
    Publication date: September 9, 2021
    Inventors: Takeshi YOSHINORI, Takashi YAMANAKA, Yoshiki KATO, Masayuki TAKEUCHI, Koji MIURA, Yasumitsu OMI
  • Patent number: 11029098
    Abstract: A device temperature regulator includes a forward passage in which a forward flow passage is formed to cause a working fluid to flow to a heat absorber from a heat radiator, and a backward passage in which a backward flow passage is formed to cause the working fluid to flow to the heat radiator from the heat absorber. In addition, the device temperature regulator includes a bubble generator, which generates a bubble in the working fluid collecting in the heat absorber and having a liquid phase, and a controller that causes the bubble generator to generate the bubble in a precondition is satisfied.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: June 8, 2021
    Assignee: DENSO CORPORATION
    Inventors: Masayuki Takeuchi, Yasumitsu Omi, Takashi Yamanaka, Yoshiki Kato, Takeshi Yoshinori, Koji Miura
  • Patent number: 11014430
    Abstract: A refrigeration cycle device has a compressor, a radiator, a decompressor, an evaporator, a heat medium cooling evaporator, a cooling target device, a detector, and a controller. The heat medium cooling evaporator cools a cooling heat medium by performing a heat exchange between the refrigerant decompressed in the decompressor and the cooling heat medium. The cooling heat medium cools the cooling target device. The detector detects a subcooling state of the cooling target device having a temperature lower than or equal to a reference temperature. Upon the detection of the subcooling state in the cooling target device by the detector, the controller increases the degree of superheat of the refrigerant flowing out of the heat medium cooling heat exchanger as compared to the degree of superheat of the refrigerant flowing out of the heat medium cooling heat exchanger when the detector does not detect the subcooling state.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: May 25, 2021
    Assignee: DENSO CORPORATION
    Inventors: Koji Miura, Yoshiki Kato, Masayuki Takeuchi, Nobuyuki Hashimura, Keigo Sato, Norihiko Enomoto, Kengo Sugimura, Ariel Marasigan
  • Patent number: 10996002
    Abstract: An evaporator evaporates a working fluid by heat from a battery. The evaporator includes at least one evaporation channel connected to the battery in a thermally conductive manner. The evaporator includes a supply channel connected to an upstream end of the evaporation channel, and supplies the working fluid in liquid phase from the supply channel to the evaporation channel. The evaporator includes an outflow channel connected with a downstream end of the evaporation channel, and discharges the working fluid. The outflow channel is disposed above the supply channel, and the supply channel is disposed at a position more insulated from the heat of the battery than the evaporation channel is.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: May 4, 2021
    Assignee: DENSO CORPORATION
    Inventors: Yasumitsu Omi, Takeshi Yoshinori, Masayuki Takeuchi, Koji Miura
  • Patent number: 10989447
    Abstract: A refrigeration cycle device includes a compressor, a condenser, a first decompressor, an outside heat exchanger, and an evaporator. A predetermined part of a refrigerant passage from the condenser to the first decompressor through which the refrigerant flows is a condenser outlet portion. A predetermined part of a refrigerant passage from the first decompressor to the outside heat exchanger through which the refrigerant flows is an outside heat exchanger inlet portion. A predetermined part of a refrigerant passage from the outside heat exchanger to the second decompressor through which the refrigerant flows is an outside heat exchanger outlet portion. A volume capacity of the condenser outlet portion is larger than a volume capacity of the outside heat exchanger inlet portion. According to the refrigeration cycle device, preferable coefficient of performance of cycle can be achieved in different operation modes.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: April 27, 2021
    Assignee: DENSO CORPORATION
    Inventors: Koji Miura, Yoshiki Kato, Masayuki Takeuchi, Nobuyuki Hashimura, Keigo Sato, Norihiko Enomoto, Kengo Sugimura, Ariel Marasigan
  • Patent number: 10950909
    Abstract: A device temperature regulator is provided with a gas passage part that guides a gaseous working fluid evaporated in a device heat exchanger to a condenser, and a liquid passage part that guides a liquid working fluid condensed in the condenser to the device heat exchanger. The device temperature regulator is provided with a supply amount regulator that increases or decreases a supply amount of the liquid working fluid supplied to the device heat exchanger. The supply amount regulator decreases the supply amount of the liquid working fluid to the device heat exchanger such that a liquid surface is formed in a state where the gaseous working fluid is positioned at a lower side lower than a heat exchanging portion exchanging heat with a temperature regulation target device in the device heat exchanger, when a condition for keeping the temperature regulation target device at a temperature is satisfied.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: March 16, 2021
    Assignee: DENSO CORPORATION
    Inventors: Koji Miura, Takashi Yamanaka, Yasumitsu Omi, Yoshiki Kato, Masayuki Takeuchi, Takeshi Yoshinori
  • Patent number: 10940740
    Abstract: In a heat pump system, when a heat-shock determination portion determines that a difference between a coolant temperature in a coolant flow path and a coolant temperature in a heat source flow path is equal to or higher than a predetermined temperature, a flow-path switching portion mixes the respective coolants flowing through at least a bypass flow path and the heat source flow path together to flow into the coolant flow path.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: March 9, 2021
    Assignee: DENSO CORPORATION
    Inventors: Kengo Sugimura, Yoshiki Katoh, Masayuki Takeuchi, Koji Miura, Norihiko Enomoto, Keigo Satou, Ariel Marasigan, Nobuyuki Hashimura
  • Patent number: 10910684
    Abstract: A first thermosiphon circuit includes a first evaporator configured to cool a first target device by a latent heat of evaporation of a working fluid that absorbs a heat from the first target device, and a first passage communicating with the first evaporator. A second thermosiphon circuit includes a second evaporator configured to cool a second target device by a latent heat of evaporation of a working fluid that absorbs a heat from the second target device, and a second passage communicating with the second evaporator. A main condenser includes a first heat exchanger provided in the first passage and a second heat exchanger provided in the second passage, and is configured to allow the working fluid flowing through the first heat exchanger, the working fluid flowing through the second heat exchanger, and a predetermined cold energy supply medium to exchange heat with each other.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: February 2, 2021
    Assignee: DENSO CORPORATION
    Inventors: Yasumitsu Omi, Takeshi Yoshinori, Masayuki Takeuchi, Koji Miura
  • Patent number: 10906141
    Abstract: A method for manufacturing a device temperature controller includes filling an inside of a circuit with working fluid by connecting a filling port of the circuit to a container that stores gas phase working fluid. The circuit constitutes a thermosiphon heat pipe and allows the working fluid to circulate in the circuit. In the filling, the working fluid inside the circuit is cooled by a cooling source. An inside temperature of the circuit is decreased to be lower than an inside temperature of the container, and thereby an inside pressure of the circuit is decreased to be lower than an inside pressure of the container.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: February 2, 2021
    Assignee: DENSO CORPORATION
    Inventors: Yasumitsu Omi, Takashi Yamanaka, Yoshiki Kato, Takeshi Yoshinori, Masayuki Takeuchi, Koji Miura
  • Patent number: 10759257
    Abstract: A refrigeration cycle device includes a compressor, an air-refrigerant heat exchanger that exchanges heat between air and refrigerant, an expansion valve decompressing the refrigerant, a heat medium-refrigerant heat exchanger that exchanges heat between a heat medium and the refrigerant, a cold-heat utilization device that utilizes cold heat of the heat medium, and a hot-heat utilization device that utilizes hot heat of the heat medium. A refrigerant flow switching valve is provided to switch between a heat-medium cooling mode of cooling the heat medium in the heat medium-refrigerant heat exchanger, and a heat-medium heating mode of heating the heat medium in the heat medium-refrigerant heat exchanger.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: September 1, 2020
    Assignee: DENSO CORPORATION
    Inventors: Yoshiki Katoh, Koji Miura, Kengo Sugimura, Masayuki Takeuchi, Keigo Satou, Norihiko Enomoto, Nobuyuki Hashimura
  • Patent number: 10752089
    Abstract: An air conditioner is provided with: a refrigeration cycle including a subcooling heat exchanger that subcools a refrigerant having heat-dissipated in a high-pressure side heat exchanger by exchanging heat with a heat medium; a blower that blows the air to an air passage in an air-conditioning casing; an air cooler disposed in the air passage to cool the air; a heater core disposed on an air flow downstream side of the air cooler in the air passage to heat the air cooled by the air cooler; an auxiliary air heater disposed on the air flow downstream side of the air cooler and on an air flow upstream side of the air heater in the air passage, to heat the air cooled by the air cooler by exchanging heat with the heat medium; and a flow-rate adjustment portion configured to adjust a flow rate of the heat medium circulating between the subcooling heat exchanger and the auxiliary air heater.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: August 25, 2020
    Assignee: DENSO CORPORATION
    Inventors: Keigo Sato, Yoshiki Kato, Masayuki Takeuchi
  • Publication number: 20200254845
    Abstract: A cooler cools a target equipment by evaporation latent heat of working fluid. A cold-heat heat exchanger condenses the working fluid by radiating heat of the working fluid using cold heat of low-temperature and low-pressure refrigerant circulating in a refrigeration cycle. An air-cooled heat exchanger condenses the working fluid by radiating heat of the working fluid using cold heat of outside air. The cooler, the cold-heat heat exchanger, and the air-cooled heat exchanger are connected by a gas pipe and a liquid pipe. An outside air temperature detector detects an outside air temperature. A saturation temperature detector detects a saturation temperature of the working fluid circulating in a thermosiphon circuit. A heat radiation controller controls an amount of heat radiated from the working fluid flowing through the cold-heat heat exchanger so that the saturation temperature of the working fluid becomes higher than the outside air temperature.
    Type: Application
    Filed: April 28, 2020
    Publication date: August 13, 2020
    Inventors: Koji MIURA, Yasumitsu OMI, Takeshi YOSHINORI, Masayuki TAKEUCHI
  • Publication number: 20200259231
    Abstract: A cooling device for a vehicle is configured as a thermosiphon that performs heat transfer by a working fluid sealed in a sealed container to cool a target object. The cooling device includes an evaporator and an outdoor condenser. The evaporator forms a part of the sealed container, and evaporates the working fluid by absorbing heat of the target device. The outdoor condenser forms a part of the sealed container, and is disposed above the evaporator. The outdoor condenser is located adjacent to a cabin space with respect to a vehicle body around the cabin space. The outdoor condenser is fixed to the vehicle body or a member provided adjacent to the cabin space with respect to the vehicle body, and condenses the working fluid by radiating heat of the working fluid vaporized in the evaporator to an outside air.
    Type: Application
    Filed: April 7, 2020
    Publication date: August 13, 2020
    Inventors: Yasumitsu OMI, Koji MIURA, Takeshi YOSHINORI, Masayuki TAKEUCHI
  • Patent number: 10723199
    Abstract: A vehicular heat management device includes a first heat source, a second heat source, a heater core, a first heat medium pathway, a second heat medium pathway, a heater core pathway, a switching portion, and a control unit. The first heat source is provided in the first heat medium pathway, and the second heat source is provided in the second heat medium pathway. The heater core is provided in the heater core pathway. The switching portion switches between flowing connection and flowing disconnection. The control unit performs at least one of a switching control and a second heat source control when a temperature of the heat medium of the heater core pathway is at or above a predetermined temperature. In the switching control, the switching portion connects the second heat medium pathway to the heater core pathway. In the second heat source control, the second heat source generates heat.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: July 28, 2020
    Assignees: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshiki Kato, Masayuki Takeuchi, Keigo Sato, Koji Miura, Norihiko Enomoto, Kengo Sugimura, Ariel Marasigan, Ikuo Ozawa, Nobuharu Kakehashi, Yoshikazu Shinpo, Yoichi Onishi, Toshio Murata
  • Patent number: 10723203
    Abstract: A refrigeration cycle device includes: a first expansion valve that decompresses a refrigerant flowing out of a high-pressure side heat exchanger; an exterior heat exchanger that exchanges heat between the refrigerant flowing out of the first expansion valve and outside air; a second expansion valve that decompresses the refrigerant flowing out of the exterior heat exchanger; a low-pressure side heat exchanger arranged in series with the exterior heat exchanger; a cooler core that exchanges heat between the heat medium cooled by the low-pressure side heat exchanger and air to be blown into a vehicle interior to cool the air; and a controller configured to switch between a heat absorption mode and a heat dissipation mode by adjusting an amount of decompression in each of the first expansion valve and the second expansion valve.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: July 28, 2020
    Assignee: DENSO CORPORATION
    Inventors: Yoshiki Kato, Nobuyuki Hashimura, Koji Miura, Norihiko Enomoto, Kengo Sugimura, Keigo Sato, Masayuki Takeuchi, Ariel Marasigan
  • Patent number: 10717341
    Abstract: A vehicular heat management system includes a heat medium circuit, a heat source portion, and a device. A heat medium cooling an engine circulates in the heat medium circuit. The heat source portion heats the heat medium. The device is configured to function and heat the heat medium when the heat medium flowing into the device is at or above a predetermined temperature. When the engine is being warmed up, heat generated by the heat source portion is supplied to the device in preference to the engine. According to this, since the heat generated by the heat source portion is supplied to the device in preference to the engine when the engine is being warmed up, the engine can be warmed up early.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: July 21, 2020
    Assignee: DENSO CORPORATION
    Inventors: Kengo Sugimura, Yoshiki Kato, Masayuki Takeuchi, Keigo Sato, Koji Miura, Norihiko Enomoto, Ariel Marasigan, Nobuyuki Hashimura
  • Publication number: 20200096260
    Abstract: An evaporator evaporates a working fluid by heat from a battery. The evaporator includes at least one evaporation channel connected to the battery in a thermally conductive manner. The evaporator includes a supply channel connected to an upstream end of the evaporation channel, and supplies the working fluid in liquid phase from the supply channel to the evaporation channel. The evaporator includes an outflow channel connected with a downstream end of the evaporation channel, and discharges the working fluid. The outflow channel is disposed above the supply channel, and the supply channel is disposed at a position more insulated from the heat of the battery than the evaporation channel is.
    Type: Application
    Filed: April 1, 2019
    Publication date: March 26, 2020
    Inventors: Yasumitsu OMI, Takeshi YOSHINORI, Masayuki TAKEUCHI, Koji MIURA
  • Publication number: 20200088471
    Abstract: A thermosiphon applied to a moving body includes a condenser and a plurality of coolers. Each of the plurality of coolers includes a first flow channel forming member, a second flow channel forming member, and a third flow channel forming member. The second flow channel forming member defines a refrigerant inlet that is located below a center portion of a supply flow channel defined by the first flow channel forming member in a vertical direction. The plurality of coolers are arranged along a traveling direction of the moving body and the supply flow channel is fluidly connected in series with each other.
    Type: Application
    Filed: November 22, 2019
    Publication date: March 19, 2020
    Inventors: Yasumitsu OMI, Takeshi YOSHINORI, Koji MIURA, Masayuki TAKEUCHI