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公开(公告)号：US20220170666A1
公开(公告)日：2022-06-02
申请号：US17674909
申请日：2022-02-18
发明人： Kentaro YAMAMOTO , Masahiko Takano
摘要： A waste-heat recovery system includes a waste-heat-recovery heat a tank, a circulation circuit, a circulation pump, and a control device that is configured to obtain the temperature of the heat medium flowing through a heat medium outlet piping of the circulation circuit and the temperature of the water stored in the tank. The control device stops the circulation pump or reduces the rotational frequency thereof in a case where the temperature of the heat medium flowing through the heat medium outlet piping is lower, or lower by a predetermined temperature or more, than the temperature of the water.
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公开(公告)号：US20220136951A1
公开(公告)日：2022-05-05
申请号：US17254673
申请日：2020-04-15
发明人： Takeshi KANEKO , Hirotoshi SATO , Toshihiko SUWA , Makoto YOKOYAMA , Haruhiko ADACHI , Takeshi MATSUMURA
IPC分类号： G01N15/08
摘要： Provided is a fan filter unit with which the performance of a HEPA filter can be measured at multiple points with ease and in a short time. The fan filter unit has a first HEPA filter, a second HEPA filter, and exhaust means installed between the first HEPA filter and the second HEPA filter. The first HEPA filter, the second HEPA filter, and the exhaust means are integrated by a housing.
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公开(公告)号：US20220106950A1
公开(公告)日：2022-04-07
申请号：US17420755
申请日：2020-03-10
发明人： Nobuyuki NARISAWA , Ken UMEDA , Sho GOTO , Tatsuya SUZUKI
摘要： There is provided a compressor including: a piston that reciprocates inside a cylinder; a valve plate that closes an end portion of the cylinder; a connecting rod that supports the piston; a crankshaft that applies a rotating force to an end portion of the connecting rod; and a crankcase that rotatably supports the crankshaft. The piston is an oscillating piston that reciprocates while oscillating inside the cylinder according to rotation of the crankshaft. An outer peripheral surface of the piston is a curved surface.
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公开(公告)号：US11273712B2
公开(公告)日：2022-03-15
申请号：US16479852
申请日：2018-02-13
发明人： Yoshitaka Iwaji , Kazuaki Tobari , Yuuta Iwase , Yusaku Onuma
IPC分类号： H02P21/16 , H02P29/024 , B60L3/00 , H02P21/22 , H02P27/08 , B60L15/20 , H02M7/5387
摘要： Provided is an AC electric motor control device capable of detecting, in an AC electric motor drive device, abnormal operation of an AC electric motor or abnormal operation due to, for example, a sudden change of a load without an erroneous operation regardless of the operational state of the AC electric motor. When driving a three-phase AC electric motor by an inverter, inside a controller, an electric motor constant is calculated using at least one of the current, voltage, and rotational speed of the electric motor and the variation of the constant value is analyzed, thereby detecting abnormal operation of the electric motor or abnormal operation of a load device connected to the electric motor. In order to analyze the constant, a variation to be determined to be abnormal is preset or an abnormal value is calculated in comparison with the accumulated values of past constant changes. Alternatively, only the variation of the constant calculated in the controller is extracted to detect abnormality.
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公开(公告)号：US20220068579A1
公开(公告)日：2022-03-03
申请号：US17420208
申请日：2019-04-22
发明人： Kazuhiro SATOU , Takashi SATO , Shindai SATOU , Masanori SHISHIDO
IPC分类号： H01H33/668 , G01R31/327
摘要： To provide a vacuum valve pressure diagnosis device for an opening/closing device equipped with a vacuum valve, the diagnosis device which permits downsizing of the vacuum valve and achieves enhanced safety and reliability. Accordingly, the vacuum valve pressure monitoring device is disposed in a vacuum breaker including: a main circuit opening/closing part including the vacuum valve and an insulating frame covering the vacuum valve; and an operation mechanism part for opening/closing a contact of the vacuum valve. The pressure monitoring device for vacuum valve includes: a first electrode disposed on one side surface of the insulating frame and grounded via an impedance; a second electrode disposed on another side surface of the insulating frame and grounded via a switch; and a potential measuring device connected in between the impedance and the first electrode.
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公开(公告)号：US11251677B2
公开(公告)日：2022-02-15
申请号：US16476892
申请日：2017-01-25
发明人： Fuminori Kato , Yoshiyuki Kanemoto
摘要： Provided are: a motor for which high strength can be obtained in a motor casing; and a compressor that uses the motor. This motor 10 has: a rotating shaft 12 provided in a rotatable manner; a rotor 32 that rotates integrally with the rotating shaft 12; a stator 31 that rotationally drives the rotor 32; and a motor casing 14 that is a cylindrical body for accommodating the rotor 32 and the stator 31, and has, on the outer circumferential surface thereof, ribs 22 extending in a circumferential direction.
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公开(公告)号：US20210381510A1
公开(公告)日：2021-12-09
申请号：US17288374
申请日：2019-09-04
摘要： A screw compressor includes plural screw rotors, plural suction-side bearings that each rotatably support the suction side of the plural screw rotors and plural discharge-side bearings that each rotatably support the discharge side of the plural screw rotors, and a casing that houses the plural screw rotors, the plural suction-side bearings, and the plural discharge-side bearings. Each screw rotor includes a lobe section with plural lobes and a suction-side shaft section and a discharge-side shaft section each disposed at both ends of the lobe section. The casing has a housing chamber that houses the lobe sections of the plural screw rotors and a lubrication path in which liquid that lubricates the plural suction-side bearings circulates. In the lubrication path, respective passages to lubricate each of the plural suction-side bearings are connected in series and a most downstream part is connected to the housing chamber.
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18.发明授权公开(公告)号：US11193978B2
公开(公告)日：2021-12-07
申请号：US16771738
申请日：2018-11-22
发明人： Kohji Maki , Yoshitaka Iwaji , Tetsuji Kato
IPC分类号： G01R31/34 , G01R19/165 , G01R31/12 , H02P27/08 , H02P29/024
摘要： A power conversion device according to the present invention is connected to a rotating machine comprising an armature coil and supplies and receives power. The power conversion device has a function for: collectively applying voltage pulses to the armature coil or coils for one or more specific phases of the rotating machine, sampling the current values of the specific phases from the start of the rising or falling of the voltage pulses until a designated delay time, detecting variation in the capacitance of an insulation member of the armature coils of the specific phases of the rotating machine from variation from a normal state of the current values, and diagnosing insulation degradation.
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公开(公告)号：US11183898B2
公开(公告)日：2021-11-23
申请号：US16314582
申请日：2017-07-07
发明人： Genzo Iwaki , Kazuo Nishihama , Katsuya Hirata , Atsushi Abe
摘要： Provided is a rotary electric machine that achieves high motor efficiency with little loss. This rotary electric machine is equipped with: a stator core arranged opposing the circumferential surface of a rotor, and in which multiple slots, wherein openings opening toward the rotor are formed, are formed in the circumferential direction; and coils inserted into the slots. A mixture of a soft magnetic powder and a resin material is formed in the openings of the slots, and the relative permeability of the mixture is 5-35.
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20.发明申请公开(公告)号：US20210356554A1
公开(公告)日：2021-11-18
申请号：US17270939
申请日：2019-02-08
发明人： Takanobu MIZUNO , Tomohisa KOHIYAMA
摘要： A radio transmitter in a first radio communication device transmits first position information and first time information to a radio receiver of a vehicle. Also, a radio transmitter in a second radio communication device transmits second position information and second time information to the radio receiver. When the radio receiver of the vehicle receives the respective pieces of information, a position specification processing unit specifies the position of the vehicle based on the received pieces of information. Thus, the position of the vehicle can be specified with high accuracy even when signals from GNSS satellites cannot be received.
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