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公开(公告)号：US12173944B2
公开(公告)日：2024-12-24
申请号：US18003172
申请日：2020-08-21
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Kazunori Sakanobe , Kenta Yuasa , Yasuhiko Wada , Chitose Tanaka
Abstract: A refrigerating and air-conditioning apparatus performs a defrosting operation. The refrigerating and air-conditioning apparatus includes a refrigerant circuit, a temperature sensor, and a heat generation control unit. In the refrigerant circuit, a compressor, a first heat exchanger, an expansion device, a second heat exchanger, and a four-way valve are connected to each other by pipes to allow refrigerant to circulate through the refrigerant circuit. The temperature sensor measures a temperature of the compressor. The heat generation control unit increases a temperature of the compressor when the heat generation control unit detects a decrease in a value measured by the temperature sensor in a defrosting operation performed on the first heat exchanger.
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公开(公告)号：US10008902B2
公开(公告)日：2018-06-26
申请号：US15301171
申请日：2015-07-07
Applicant: Mitsubishi Electric Corporation
Inventor： Yuto Urabe , Hiroki Aso , Kazunori Sakanobe , Mineo Yamamoto , Hiroyuki Ishii , Junichiro Oya
IPC: H02K5/02 , H02K5/22 , H02K11/21 , F24F7/007 , H02K29/08 , H02K3/52 , F24F1/38 , H02K5/10 , H02K11/215
CPC classification number: H02K5/225 , F24F1/38 , F24F7/007 , H02K3/522 , H02K5/02 , H02K5/10 , H02K11/21 , H02K11/215 , H02K29/08
Abstract: The present invention includes a stator; a substrate on which a position detection circuit for a rotor is mounted; a lead wiring part attached to one axial end of the stator and routing a sensor lead to the position detection circuit; and a housing connected to an end of the sensor lead. The substrate is attached to a first surface side of the lead wiring part, and the housing is disposed at a position that is opposed to a position at which the substrate is attached and that is on a second surface side of the lead wiring part, and the lead wiring part includes a housing contact portion provided between the position at which the substrate is attached and the position at which the housing is disposed.
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公开(公告)号：US09954413B2
公开(公告)日：2018-04-24
申请号：US15027722
申请日：2014-10-23
Applicant: Mitsubishi Electric Corporation
Inventor： Mineo Yamamoto , Kazunori Sakanobe , Hiroyuki Ishii , Hiroki Aso , Junichiro Oya , Yuto Urabe
Abstract: A power-supply-lead retaining part includes a pair of legs extending toward a bearing through hole, a pair of first locking portions provided on the pair of legs and locked to the edge portion of the bearing through hole, and a pair of second locking portions locked to the edge portion of the sensor substrate on both sides of a notch.
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公开(公告)号：US12095384B2
公开(公告)日：2024-09-17
申请号：US17911810
申请日：2020-05-25
Applicant: Mitsubishi Electric Corporation
Inventor： Toshiki Betsuin , Kazunori Sakanobe , Shingo Taninaka
Abstract: A direct-current power supply apparatus includes a rectifier circuit that rectifies a power-supply voltage output from an alternating-current power supply, a smoothing capacitor that smooths an output voltage of the rectifier circuit and outputs a direct-current voltage, a switch connected between an output side of the rectifier circuit and an input side of the smoothing capacitor, a zero crossing detector that detects a zero crossing point of the power-supply voltage, and a controller. The controller includes an adjustment circuitry that sets a switching period such that timing of an on switching operation of the switch falls between a zero crossing period that is a period for the zero crossing point detected by the zero crossing detector, and a zero crossing average period, and a switch control circuitry that outputs an on signal to the switch in accordance with the switching period set by the adjustment circuitry.
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公开(公告)号：US12032025B2
公开(公告)日：2024-07-09
申请号：US17781367
申请日：2020-02-17
Applicant: Mitsubishi Electric Corporation
Inventor： Kenta Yuasa , Kazunori Sakanobe , Mamoru Kamikura , Toshiyuki Kuriyama
IPC: G01R31/34 , G01R19/00 , H02P25/022 , H02P27/06
CPC classification number: G01R31/34 , G01R19/0092 , H02P25/022 , H02P27/06
Abstract: a permanent magnet synchronous motor diagnostic device includes: a negative-sequence current calculator that calculates a negative-sequence current, based on magnitudes of a plurality of phase currents flowing through a permanent magnet synchronous motor that rotates a load; and a deterioration diagnoser that diagnoses deterioration of a plain bearing supporting the permanent magnet synchronous motor, based on the negative-sequence current.
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Patent Agency Ranking
公开(公告)号：US10326339B2
公开(公告)日：2019-06-18
申请号：US15303130
申请日：2014-07-08
Applicant: Mitsubishi Electric Corporation
Inventor： Hiroki Aso , Kazunori Sakanobe , Mineo Yamamoto , Hiroyuki Ishii , Junichiro Oya , Yuto Urabe
Abstract: A rotor of an electric motor configured by combining a resin magnet section molded of thermoplastic resin containing ferrite and a rotation shaft includes a magnetic section for position detection integrally formed of the thermoplastic resin on an end face on one side of the resin magnet section, the thermoplastic resin being injected from an inner diameter side of the resin magnet section to the end face. Because the position of the rotor can be detected by the magnetic section without using a magnet for position detection, cost reduction can be achieved while the accuracy of detecting the position of the rotor is ensured.
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公开(公告)号：US10284043B2
公开(公告)日：2019-05-07
申请号：US15308861
申请日：2014-07-11
Applicant: Mitsubishi Electric Corporation
Inventor： Yuto Urabe , Hiroki Aso , Kazunori Sakanobe , Mineo Yamamoto , Hiroyuki Ishii , Junichiro Oya
Abstract: A stator for an electric motor includes a substrate, sensor leads and power leads connected to the substrate, and a lead wiring part that retains the substrate and routes the sensor leads and the power leads. The substrate has a Hall IC that is a position detection circuit for a rotor mounted thereon, and a hole for inserting a terminal provided in a board-in connector formed therein. The substrate is retained only by the lead wiring part, and the sensor leads and the power leads are retained by the lead wiring part.
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公开(公告)号：US10135311B2
公开(公告)日：2018-11-20
申请号：US15125377
申请日：2014-04-22
Applicant: Mitsubishi Electric Corporation
Inventor： Hiroki Aso , Kazunori Sakanobe , Mineo Yamamoto , Hiroyuki Ishii , Junichiro Oya , Yuto Urabe , Junichi Ono , Shigeru Matsuda
Abstract: A stator for an electric motor includes: a stator core that includes a plurality of teeth on which insulating portions are provided; and a coil formed by winding a wire around each of the teeth. A lead-in opening and a lead-out opening are formed in insulating portions provided on an outside diameter side of the stator core. The lead-in opening leads in a crossover wire of the coil routed to an outer peripheral side of the insulating portions to the side of the teeth. The lead-out opening leads out the crossover wire of the coil from the side of the teeth to the outer peripheral side of the insulating portions. The length from an axial end portion of the stator core on an insulating portion side to the lead-in opening is different from the length from the axial end portion to the lead-out opening.
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9.发明申请CONVERTER CIRCUIT AND MOTOR DRIVE CONTROL APPARATUS, AIR-CONDITIONER, REFRIGERATOR, AND INDUCTION HEATING COOKER PROVIDED WITH THE CIRCUIT 审中-公开变频器电路和电机驱动控制装置，空调器，制冷器和电路加热电路公开(公告)号：US20140320059A1
公开(公告)日：2014-10-30
申请号：US14329425
申请日：2014-07-11
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Takuya SHIMOMUGI , Yosuke Shinomoto , Kazunori Sakanobe , Michio Yamada , Kazunori Hatakeyama
CPC classification number: H02M7/06 , H02M1/4225 , H02M3/1584 , H02M2003/1586 , H02P27/06 , H05B6/06 , Y02B70/126
Abstract: A converter circuit capable of being compact and light-weight and capable of reducing switching loss, a motor drive control apparatus, an air-conditioner, a refrigerator, and an induction heating cooker provided with the circuit. The converter circuit including: a step-up converter including a rectifier, a step-up reactor, a switching element, and a reverse current prevention element; a step-up converter having a step-up reactor, a switching element, and a reverse current prevention element and connected in parallel with the step-up converter; switching control unit that controls switching elements; and a smoothing capacitor that is provided at the output of the step-up converters. The switching control unit switches the current mode of the current flowing through the step-up reactors into any of a continuous mode, a critical mode, and a discontinuous mode based on a predetermined condition.
Abstract translation: 一种能够紧凑且重量轻且能够减少开关损耗的转换器电路，电动机驱动控制装置，空调器，冰箱以及设置有该电路的感应加热烹调器。 该转换器电路包括：升压转换器，包括整流器，升压电抗器，开关元件和反向电流保护元件; 升压转换器，具有升压电抗器，开关元件和反向电流保护元件，并与升压转换器并联连接; 控制开关元件的开关控制单元; 以及设置在升压转换器的输出端的平滑电容器。 开关控制单元基于预定条件将流过升压电抗器的电流的电流模式切换成连续模式，临界模式和不连续模式中的任一种。
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10.发明授权公开(公告)号：US12130200B2
公开(公告)日：2024-10-29
申请号：US18042506
申请日：2020-10-13
Applicant: Mitsubishi Electric Corporation
Inventor： Yasuhiko Wada , Kazunori Sakanobe
IPC: G01M13/04 , G01N3/56 , H02P21/14 , H02P27/06 , H02P29/024
CPC classification number: G01M13/04 , G01N3/56 , H02P21/14 , H02P27/06 , H02P29/024
Abstract: A failure diagnosis apparatus includes a controller to control drive of a motor, a wear estimator to estimate an amount of wear of a bearing of the motor based on a current that flows in the motor, and a failure notification unit to diagnose a failure of the motor based on the amount of wear of the bearing of the motor estimated by the wear estimator and to notify a user. When the wear estimator estimates the amount of wear of the bearing of the motor, the controller controls drive of the motor such that the motor is driven in a constant state.
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