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公开(公告)号：US20200171265A1
公开(公告)日：2020-06-04
申请号：US16779693
申请日：2020-02-03
Inventor： YASUFUMI TAKAHASHI , KAZUHITO HATO , KUNIHIRO UKAI
Abstract: A hydrogen supply apparatus includes: an air path having an inlet and an outlet; a fan that is disposed in the air path and produces a flow of air from the inlet to the outlet; a first pipe having an end that forms a first supply port through which to supply hydrogen gas to the air path; a flow control device that is attached to the first pipe and adjusts a flow rate of the hydrogen gas; and a hydrogen gas sensor, disposed downstream of the fan or the end in a direction of flow of the air that detects a concentration of the hydrogen gas in the air path, where the end is disposed between the fan and the outlet or between the fan and the inlet in the air path.
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公开(公告)号：US20200023306A1
公开(公告)日：2020-01-23
申请号：US16503661
申请日：2019-07-05
Inventor： KUNIHIRO UKAI , TAKAYUKI NAKAUE , HIDENOBU WAKITA
Abstract: An electrochemical hydrogen pump includes an electrolyte membrane, an anode catalyst layer, a cathode catalyst layer, an anode gas diffusion layer, a cathode gas diffusion layer, an anode separator, a cathode separator, a first end plate and a second end plate that are disposed on the respective ends of at least one hydrogen pump unit in which the electrolyte membrane, the catalyst layers, the gas diffusion layers, and the separators are stacked on each other, a fastener that fastens the end plates and at least one hydrogen pump unit, and a voltage applier. The electrochemical hydrogen pump transfers hydrogen from the anode catalyst layer to the cathode catalyst layer and pressurizes hydrogen when the voltage applier applies the voltage. The cathode gas diffusion layer includes a water-repellent carbon fiber layer in a main surface thereof that is on a side of the cathode catalyst layer, and is compressed by the fastener.
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公开(公告)号：US20190311890A1
公开(公告)日：2019-10-10
申请号：US16280092
申请日：2019-02-20
Inventor： YUUICHI YAKUMARU , KUNIHIRO UKAI
IPC: H01J41/16
Abstract: A hydrogen supply system includes: an electrochemical hydrogen pump which includes: an electrolyte membrane; a pair of anode and cathode provided on both surfaces of the electrolyte membrane; and a current adjuster which adjusts a current flowing between the anode and the cathode and which generates hydrogen boosted at a cathode side from an anode fluid supplied to an anode side when the current is allowed to flow between the anode and the cathode by the current adjuster; and a controller which controls the current adjuster to decrease the current flowing between the anode and the cathode when the pressure of a cathode gas containing the boosted hydrogen is increased.
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公开(公告)号：US20180294490A1
公开(公告)日：2018-10-11
申请号：US15936516
申请日：2018-03-27
Inventor： HIDEKI NAKATA , KUNIHIRO UKAI , MASAKAZU AOKI
IPC: H01M8/04014 , H01M8/1246 , H01M8/04007 , H01M8/04303 , H01M8/04537 , H01M8/04313 , H01M8/04664 , H01M8/0438 , H01M8/04746 , H01M8/04955 , H01M8/04701 , H01M8/0432 , H01M8/0612 , H01M8/2425
Abstract: Disclosed is a high-temperature operating fuel cell system including: a fuel cell stack; a combustor that combusts a cathode off-gas and an anode off-gas; a heat insulator that covers at least part of the fuel cell stack and at least part of the combustor; a first preheater that covers at least part of the heat insulator and preheats an oxidant gas; an oxidant gas feeder that supplies the oxidant gas to the first preheater; a vacuum heat insulator that covers at least part of the first preheater; a sensor that detects information indicating stopping of a power generation operation; and a controller. When a determination is made that the power generation has stopped, the controller controls the oxidant gas feeder to supply the oxidant gas to the first preheater so that the temperature of the vacuum heat insulator is equal to or lower than a prescribed temperature.
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公开(公告)号：US20180179647A1
公开(公告)日：2018-06-28
申请号：US15709560
申请日：2017-09-20
Inventor： KUNIHIRO UKAI , YUUICHI YAKUMARU
CPC classification number: C25B9/10 , B01D53/326 , C25B1/10 , C25B11/035 , H01M2/14 , H01M8/0232 , H01M8/0245 , H01M8/0247 , H01M8/0258 , H01M8/1004 , H01M2008/1095 , Y02E60/366
Abstract: A membrane electrode assembly includes: an electrolyte membrane that includes a pair of main surfaces; a cathode catalyst layer that is provided to one main surface of the electrolyte membrane; an anode catalyst layer that is provided to the other main surface of the electrolyte membrane; a cathode gas diffusion layer that is provided to the cathode catalyst layer; and an anode gas diffusion layer that is provided to the anode catalyst layer. The anode gas diffusion layer includes a metal steel plate that includes a plurality of vent holes through which gas passes, unevenness is provided to a main surface of the metal steel plate that neighbors the anode catalyst layer, and a difference in a height of the unevenness in a thickness direction of the metal steel plate is less than a thickness of the electrolyte membrane.
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Patent Agency Ranking
公开(公告)号：US20240245078A1
公开(公告)日：2024-07-25
申请号：US18444613
申请日：2024-02-16
Inventor： DAISUKE INO , KUNIHIRO UKAI , YASUHIRO HASHIMOTO , SATORU YAMAJI
IPC: A23L3/00 , A23L3/28 , B01F27/1125
CPC classification number: A23L3/001 , A23L3/28 , B01F27/11252
Abstract: A food processing apparatus in the present disclosure includes a reaction tank, a stirring body, and catalyst-attached members. The reaction tank stores a liquid reactant for food. The stirring body stirs the reactant stored in the reaction tank by rotating. The catalyst-attached members each have an outer surface at which a photocatalyst is present. The food processing apparatus satisfies the following condition (I), the following condition (II), or the following conditions (I) and (II). (I) A diameter of a circle that is a track formed by an outermost end of the stirring body in a direction perpendicular to a rotation axis when the stirring body rotates is greater than or equal to a maximum dimension. (II) The stirring body pushes the reactant toward a bottom of the reaction tank in a direction parallel to the rotation axis Ax when the stirring body rotates.
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公开(公告)号：US20230240338A1
公开(公告)日：2023-08-03
申请号：US18299107
申请日：2023-04-12
Inventor： KUNIHIRO UKAI , YASUHIRO HASHIMOTO , DAISUKE INO
Abstract: A food processing device includes a reaction vessel, a stirrer including a stirring body, and catalyst reactors. Each catalyst reactor includes a reaction tube and a light source. The reaction tube has an outer surface on which a photocatalyst is provided, and transmits light. The catalyst reactors are arranged around a rotating shaft. The light source includes light emitters disposed at different positions. When viewed in an axial direction of the rotating shaft, the catalyst reactors have equal phases. The phase of each catalyst reactor is a phase of a reference direction of the reaction tube of the catalyst reactor with respect to a straight line connecting centers of the rotating shaft and the reaction tube. The reference direction of the reaction tube is a direction determined on the basis of a direction in which light is emitted from the light emitters and a positional relationship between the light emitters.
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公开(公告)号：US20200340471A1
公开(公告)日：2020-10-29
申请号：US16925371
申请日：2020-07-10
Inventor： TAKAYUKI NAKAUE , KUNIHIRO UKAI , HIROMI KITA
IPC: F04B45/047 , H01M8/04082
Abstract: An electrochemical hydrogen pump includes an electrolyte membrane, an anode catalyst layer in contact with one primary surface of the electrolyte membrane, a cathode catalyst layer in contact with the other primary surface of the electrolyte membrane, an anode gas diffusion layer in contact with the anode catalyst layer, a cathode gas diffusion layer in contact with the cathode catalyst layer, and a voltage applicator that applies a voltage between the anode catalyst layer and the cathode catalyst layer. Application of the voltage by the voltage applicator causes hydrogen in a hydrogen-containing gas supplied to above the anode catalyst layer to move above the cathode catalyst layer and to be pressurized. The anode gas diffusion layer includes a porous carbon sheet that has a smaller porosity in a first surface layer, which is on the anode catalyst layer side, than in the inside layer deeper than the first surface layer.
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公开(公告)号：US20200179205A1
公开(公告)日：2020-06-11
申请号：US16789843
申请日：2020-02-13
Inventor： KUNIHIRO UKAI , KAZUHITO HATO
Abstract: A hydrogen-containing gas supply system includes one or more hydrogen-containing gas suppliers, one or more acquirers, and a controller. The one or more hydrogen-containing gas suppliers supply a hydrogen-containing gas to one or more areas in a building. The one or more acquirers acquire information indicating that a person is present in the one or more areas. When it is determined that a person is present in a certain area of the one or more areas in accordance with the information acquired by the acquirers, the controller causes at least one of the one or more hydrogen-containing gas suppliers to supply the hydrogen-containing gas to the certain area.
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公开(公告)号：US20200011313A1
公开(公告)日：2020-01-09
申请号：US16442578
申请日：2019-06-17
Inventor： KUNIHIRO UKAI , HIROMI KITA , TAKAYUKI NAKAUE
IPC: F04B37/04
Abstract: An electrochemical hydrogen pump includes a hydrogen pump unit including an electrolyte film, an anode catalyst layer, a cathode catalyst layer, an anode gas diffusion layer, an anode separator, a cathode gas diffusion layer, and a cathode separator, a first end plate and a second end plate, a fastener, and a voltage applicator. The electrochemical hydrogen pump transfers and pressurizes hydrogen on the cathode catalyst layer, when a voltage is applied by the voltage applicator. Cathode gas flow channels in which the cathode gas flows are connected to each other. The amount of thickness reduction of the cathode gas diffusion layer due to compression resulting from fastening of the fastener is larger in the hydrogen pump unit positioned at at least one end of the stacked hydrogen pump units than in the hydrogen pump unit positioned at neither end of the stacked hydrogen pump units.
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