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公开(公告)号：US20230145933A1
公开(公告)日：2023-05-11
申请号：US17943121
申请日：2022-09-12
Applicant: TOSHIBA TEC KABUSHIKI KAISHA
Inventor： Yutaka USAMI
IPC: G03G15/20
CPC classification number: G03G15/205 , G03G15/2064 , G03G2215/2006
Abstract: A temperature control device according to one embodiment includes a temperature estimation unit, a comparison unit, and an energization control unit. The temperature estimation unit estimates a temperature of an object based on energization of elements related to temperature control of the object. The comparison unit compares a difference between a detected temperature of the object and an estimated temperature of the object. If the difference exceeds a reference value, the energization control unit stops energizing the elements related to the temperature control of the object.
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公开(公告)号：US20230081082A1
公开(公告)日：2023-03-16
申请号：US17943102
申请日：2022-09-12
Applicant: TOSHIBA TEC KABUSHIKI KAISHA
Inventor： Yutaka USAMI
Abstract: According to one embodiment, a temperature control device includes a temperature estimation unit and a frequency generation unit. The temperature estimation unit is configured to estimate a temperature of an object being heated by an induction heating coil, the temperature being estimated based on a frequency of a drive signal supplied to an inverter connected to the induction heating coil. The frequency generation unit is configured to set the frequency of the drive signal based on the temperature estimated by the temperature estimation unit, a detected temperature of the object from a temperature sensor, and a target temperature for the object.
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公开(公告)号：US20190384215A1
公开(公告)日：2019-12-19
申请号：US16554056
申请日：2019-08-28
Applicant: TOSHIBA TEC KABUSHIKI KAISHA
Inventor： Yutaka USAMI
Abstract: A power supply circuit includes a thermoelectric conversion element configured to generate electric power when it is differentially heated, an adjustable current circuit configured to draw a current from the thermoelectric conversion element and resultantly output a constant current over a period of time, a voltage conversion circuit configured to output a voltage based on the current output by the adjustable current circuit, and a control circuit configured to control the adjustable current circuit to change a target value of the constant current output by the adjustable current circuit.
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公开(公告)号：US20180364628A1
公开(公告)日：2018-12-20
申请号：US15943658
申请日：2018-04-02
Applicant: TOSHIBA TEC KABUSHIKI KAISHA
Inventor： Yutaka USAMI
IPC: G03G15/00
CPC classification number: G03G15/80 , G03G15/2039 , G03G15/5004 , G03G2215/00983 , H02J7/0068 , H02J7/0072 , H02J9/002 , H02M1/08 , H02M3/158 , H02M3/1588 , H02M3/33507 , H02M3/33523 , H02M7/538 , H02M2001/0009
Abstract: A power supply circuit includes a thermoelectric conversion element configured to generate electric power when it is differentially heated, an adjustable current circuit configured to draw a current from the thermoelectric conversion element and resultantly output a constant current over a period of time, a voltage conversion circuit configured to output a voltage based on the current output by the adjustable current circuit, and a control circuit configured to control the adjustable current circuit to change a target value of the constant current output by the adjustable current circuit.
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公开(公告)号：US20170033706A1
公开(公告)日：2017-02-02
申请号：US15202599
申请日：2016-07-06
Applicant: TOSHIBA TEC KABUSHIKI KAISHA
Inventor： Yutaka USAMI
CPC classification number: H02M1/4225 , H02M2001/0009 , Y02B70/126
Abstract: According to one embodiment, a power conversion device includes a first switch serially connected to a second switch, a first diode serially connected to a second diode, the first switch and the first diode connected to the second switch and the second diode, an AC power supply and an inductor serially connected to a connection point between the first switch and the second switch and a connection point between the first diode and the second diode, a capacitor serially connected to ends of the first diode and the second diode connected, and a potential difference between the ends of the capacitor is used as an output voltage. The control unit supplies a pulse signal to the first switch and the second switch to provide a sinusoidal current through the AC power supply, based on a detected power supply voltage, a detected circuit current, and a detected capacitor voltage.
Abstract translation: 根据一个实施例，功率转换装置包括串联连接到第二开关的第一开关，串联连接到第二二极管的第一二极管，第一开关和连接到第二开关和第二二极管的第一二极管，AC电源 电源和串联连接到第一开关和第二开关之间的连接点的电感器以及第一二极管和第二二极管之间的连接点，串联连接到第一二极管的端部和连接的第二二极管的电容器，以及电位 电容器两端之间的差异用作输出电压。 控制单元基于检测到的电源电压，检测到的电路电流和检测到的电容器电压，向第一开关和第二开关提供脉冲信号以提供通过AC电源的正弦电流。
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Patent Agency Ranking
公开(公告)号：US20160141974A1
公开(公告)日：2016-05-19
申请号：US15005678
申请日：2016-01-25
Applicant: TOSHIBA TEC KABUSHIKI KAISHA
Inventor： Yutaka USAMI
IPC: H02M7/04
CPC classification number: H02M7/04 , H02M7/217 , H02M2001/0009
Abstract: According to one embodiment, a controller determines the polarity of the input voltage detected by an input voltage detector. Then, when the polarity of the input voltage is positive, the first switch is subject to pulse driving, and when the polarity of the input voltage is negative, the second switch is subject to pulse driving, where the pulse driving is carried out at an on/off timing determined on the basis of the respective detection outputs of an input voltage detector, an input current detector, an output voltage detector, and an output current detector.
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公开(公告)号：US20210364956A1
公开(公告)日：2021-11-25
申请号：US17136269
申请日：2020-12-29
Applicant: TOSHIBA TEC KABUSHIKI KAISHA
Inventor： Yutaka USAMI
IPC: G03G15/20
Abstract: A temperature control device controls a temperature of a temperature control target to which heat propagates from a heater by supplying power to the heater and includes a control circuit. The control circuit includes a temperature estimation unit and a control signal generation unit. The temperature estimation unit estimates the temperature of the temperature control target based on conduction to the heater. The control signal generation unit outputs a conduction pulse for controlling power to be supplied to the heater based on a temperature estimation result and a temperature detection result of the temperature control target by a temperature sensor.
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8.发明申请公开(公告)号：US20210080877A1
公开(公告)日：2021-03-18
申请号：US16570486
申请日：2019-09-13
Applicant: TOSHIBA TEC KABUSHIKI KAISHA
Inventor： Yutaka USAMI
Abstract: An image forming apparatus includes a heat roller comprising a heater and configured to generate heat to fix a toner image on a print medium, a system controller configured to transmit, when printing is performed on a print medium, a control signal that indicates when power is to be supplied to the heater, and a heater control circuit configured to control amount of power supplied to the heater according to the control signal, a target temperature of the heater, and a current temperature of the heater. When printing is to be continuously performed on a plurality of print media, the system controller transmits the control signal to the heater control circuit a first predetermined time before start of printing.
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公开(公告)号：US20200304038A1
公开(公告)日：2020-09-24
申请号：US16714025
申请日：2019-12-13
Applicant: TOSHIBA TEC KABUSHIKI KAISHA
Inventor： Yutaka USAMI
Abstract: A power conversion device includes first and second current detectors. A coil is connected a first power terminal through the first and second current detectors. A first switch has a source terminal connected to the coil and a second semiconductor switch has a drain terminal connected to the coil. A first diode is connected between a drain terminal of the first semiconductor switch and a second power supply terminal. A second diode is connected between a source terminal of the second semiconductor switch and the second power terminal. A capacitor is connected in parallel with the first and second diodes. A control circuit is configured to turn the first and second semiconductor switches on or off based on current detections of the first and second current detectors.
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公开(公告)号：US20150109829A1
公开(公告)日：2015-04-23
申请号：US14521543
申请日：2014-10-23
Applicant: TOSHIBA TEC KABUSHIKI KAISHA
Inventor： Yutaka USAMI
IPC: H02M3/335
CPC classification number: H02M3/337 , H02M1/126 , H02M1/4258 , Y02B70/126
Abstract: A power conversion device includes a power conversion circuit having first, second, third, and fourth switches, and a controller. The controller generates a first pulse signal for controlling the turning on and off of the first and fourth switches and a second pulse signal for controlling the turning on and off of the second and third switches, based on a circuit current flowing in the power conversion circuit and a voltage of an AC power source. The turning on and off of the switches causes the power conversion device to have a flowing current in which a high frequency component is mixed with a low frequency component.
Abstract translation: 电力转换装置包括具有第一，第二，第三和第四开关的电力转换电路和控制器。 控制器基于在电力转换电路中流动的电流产生用于控制第一和第四开关的导通和截止的第一脉冲信号和用于控制第二和第三开关的导通和截止的第二脉冲信号 和AC电源的电压。 开关的接通和断开使得电力转换装置具有其中高频分量与低频分量混合的流动电流。
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