Patents by Inventor Junya Mitsui
Junya Mitsui 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).
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Publication number: 20240158199Abstract: In a binding discharge process, a binding process is performed on a plurality of sheets positioned at a binding position by repeating a process in which, after a conveyed sheet is conveyed in a reverse direction on a placement portion by a second conveyance portion to cause a downstream end of the sheet to abut an abutment portion, the sheet is moved in a shift direction and positioned at the binding position by a first shifting portion, and the plurality of sheets subjected to the binding process are discharged onto the stacking portion by a discharge portion. In a switchbackless shift discharge process, the conveyed sheet is shifted in the shift direction by the first shifting portion by driving a driving portion without conveying the sheet in the reverse direction by the second conveyance portion, and is discharged onto the stacking portion by the discharge portion.Type: ApplicationFiled: January 26, 2024Publication date: May 16, 2024Inventors: Junya NAKAJIMA, Kakeru AOKI, Mamoru KUBO, Yusuke MITSUI
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Patent number: 10985670Abstract: A power supply device is provided with a diode rectifier circuit having an input connected to an AC power source, the output of the diode rectifier circuit producing a rectified voltage; a capacitor connected to the diode rectifier to be charged by the rectified voltage; and a controller configured to receive as input a detection signal representing a charging current flowing into the capacitor, the controller being further configured to calculate a voltage frequency, a cycle, or a power voltage phase of the AC power on the basis of the detection signal. At least one of the following is used to detect the charging current flowing into the capacitor and produce the detection signal: a photocoupler; an amplifier circuit including a shunt resistor and an operational amplifier; and a current transformer.Type: GrantFiled: June 28, 2018Date of Patent: April 20, 2021Assignee: Daikin Industries, Ltd.Inventors: Yuuki Nakajima, Junya Mitsui, Toshiaki Satou
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Patent number: 10218287Abstract: A power conversion device includes a single phase full-bridge rectification circuit, a reactor being connected to a power source in series between one of input terminals of the single phase full-bridge rectification circuit and the power source, capacitors being connected to each other in series via a connection point between output terminals of the single phase full-bridge rectification circuit, a first switch connected between the input terminal and the connection point, and a second switch connected between the input terminals.Type: GrantFiled: December 6, 2016Date of Patent: February 26, 2019Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Toshiaki Satou, Junya Mitsui
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Publication number: 20180367058Abstract: A power conversion device includes a single phase full-bridge rectification circuit, a reactor being connected to a power source in series between one of input terminals of the single phase full-bridge rectification circuit and the power source, capacitors being connected to each other in series via a connection point between output terminals of the single phase full-bridge rectification circuit, a first switch connected between the input terminal and the connection point, and a second switch connected between the input terminals.Type: ApplicationFiled: December 6, 2016Publication date: December 20, 2018Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Toshiaki SATOU, Junya MITSUI
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Publication number: 20180309382Abstract: A power supply device is provided with a diode rectifier circuit having an input connected to an AC power source, the output of the diode rectifier circuit producing a rectified voltage; a capacitor connected to the diode rectifier to be charged by the rectified voltage; and a controller configured to receive as input a detection signal representing a charging current flowing into the capacitor, the controller being further configured to calculate a voltage frequency, a cycle, or a power voltage phase of the AC power on the basis of the detection signal. At least one of the following is used to detect the charging current flowing into the capacitor and produce the detection signal: a photocoupler; an amplifier circuit including a shunt resistor and an operational amplifier; and a current transformer.Type: ApplicationFiled: June 28, 2018Publication date: October 25, 2018Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Yuuki NAKAJIMA, Junya MITSUI, Toshiaki SATOU
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Patent number: 10003277Abstract: A power converter including a compressor as a load includes a compensation current output (80) allowing compensation current (Ic), which compensates for leakage current (Ia), to flow. A controller (50) receives a detection signal from a rotational speed sensor (55) which senses the rotational speed of the compressor (CM). When the rotational speed has increased to a set rotational speed at which the leakage current (Ia) is lower than or equal to its limiting value (Lmax) (e.g., the limiting value specified under the Electrical Appliances and Materials Safety Act or by the IEC) in a state where the compensation current output (80) is off, the compensation current output (80) is switched from an on state to an off state. This may reduce the leakage current from the compressor with low power loss.Type: GrantFiled: August 5, 2015Date of Patent: June 19, 2018Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Yasutaka Taguchi, Junya Mitsui, Akira Moriguchi
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Publication number: 20170288567Abstract: A power converter including a compressor as a load includes a compensation current output (80) allowing compensation current (Ic), which compensates for leakage current (Ia), to flow. A controller (50) receives a detection signal from a rotational speed sensor (55) which senses the rotational speed of the compressor (CM). When the rotational speed has increased to a set rotational speed at which the leakage current (Ia) is lower than or equal to its limiting value (Lmax) (e.g., the limiting value specified under the Electrical Appliances and Materials Safety Act or by the IEC) in a state where the compensation current output (80) is off, the compensation current output (80) is switched from an on state to an off state. This may reduce the leakage current from the compressor with low power loss.Type: ApplicationFiled: August 5, 2015Publication date: October 5, 2017Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Yasutaka TAGUCHI, Junya MITSUI, Akira MORIGUCHI
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Patent number: 9240737Abstract: A mode controller shifts, along with increase in an electric power in first and second of chopper circuits and, operation modes of the first and the second of the chopper circuits from a first mode to a third mode via a second mode. An operation controller causes, in the first mode, the first of chopper circuit to perform an chopping operation, and the second of chopper circuit to suspend the chopping operation, in the second mode, causes the first and the second of chopper circuits to alternatively perform the chopping operations, and in the third mode causes both of the first and the second of chopper circuits to perform the chopping operations.Type: GrantFiled: August 22, 2012Date of Patent: January 19, 2016Assignee: Daikin Industries, Ltd.Inventors: Norio Sakae, Kazuhiro Ohshita, Toshio Yabuki, Junya Mitsui
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Patent number: 8878502Abstract: A mode controller shifts, along with increase in an electric power in first and second of chopper circuits and, operation modes of the first and the second of the chopper circuits from a first mode to a third mode via a second mode. An operation controller causes, in the first mode, the first of chopper circuit to perform an chopping operation, and the second of chopper circuit to suspend the chopping operation, in the second mode, causes the first and the second of chopper circuits to alternatively perform the chopping operations, and in the third mode causes both of the first and the second of chopper circuits to perform the chopping operations.Type: GrantFiled: August 22, 2012Date of Patent: November 4, 2014Assignee: Daikin Industries, Ltd.Inventors: Norio Sakae, Kazuhiro Ohshita, Toshio Yabuki, Junya Mitsui
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Publication number: 20140223949Abstract: A mode controller shifts, along with increase in an electric power in first and second of chopper circuits and, operation modes of the first and the second of the chopper circuits from a first mode to a third mode via a second mode. An operation controller causes, in the first mode, the first of chopper circuit to perform an chopping operation, and the second of chopper circuit to suspend the chopping operation, in the second mode, causes the first and the second of chopper circuits to alternatively perform the chopping operations, and in the third mode causes both of the first and the second of chopper circuits to perform the chopping operations.Type: ApplicationFiled: August 22, 2012Publication date: August 14, 2014Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Norio Sakae, Kazuhiro Ohshita, Toshio Yabuki, Junya Mitsui