Patents by Inventor Yoshiyuki Okamoto
Yoshiyuki Okamoto 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: 20240250097Abstract: A solid-state imaging device with high productivity and improved dynamic range is provided. In the imaging device including a photoelectric conversion element having an i-type semiconductor layer, functional elements, and a wiring, an area where the functional elements and the wiring overlap with the i-type semiconductor in a plane view is preferably less than or equal to 35%, further preferably less than or equal to 15%, and still further preferably less than or equal to 10% of the area of the i-type semiconductor in a plane view. Plural photoelectric conversion elements are provided in the same semiconductor layer, whereby a process for separating the respective photoelectric conversion elements can be reduced. The respective i-type semiconductor layers in the plural photoelectric conversion elements are separated by a p-type semiconductor layer or an n-type semiconductor layer.Type: ApplicationFiled: February 12, 2024Publication date: July 25, 2024Inventors: Yuki OKAMOTO, Yoshiyuki KUROKAWA, Hiroki INOUE, Takuro OHMARU
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Publication number: 20240157756Abstract: A vehicle air conditioning apparatus includes: a refrigerant circuit including a compressor configured to compress refrigerant, an outdoor heat exchanger configured to perform a heat exchange between the refrigerant and outdoor air, and a heat absorption heat exchanger configured to absorb heat from a heat-absorbed subject into the refrigerant; and a controller configured to control the refrigerant circuit. The controller can selectively perform defrosting modes including: a hot gas defrosting mode to defrost the outdoor heat exchanger by the refrigerant compressed by the compressor; and a heat absorption defrosting mode to defrost the outdoor heat exchanger by the refrigerant absorbing the heat from the heat-absorbed subject and compressed by the compressor. The controller sets a selecting condition to preferentially select the heat absorption defrosting mode, and a switching condition to switch the heat absorption defrosting mode to the hot gas defrosting mode and performs the hot gas defrosting mode.Type: ApplicationFiled: March 22, 2022Publication date: May 16, 2024Inventors: Ryo MIYAKOSHI, Megumi SHIGETA, Yoshiyuki OKAMOTO
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Publication number: 20240157757Abstract: A vehicle air conditioning apparatus includes: a refrigerant circuit including a compressor configured to compress refrigerant, an outdoor heat exchanger configured to perform a heat exchange between the refrigerant and outdoor air, and a heat absorption heat exchanger configured to absorb heat from a heat-absorbed subject; and a controller configured to control the refrigerant circuit. The controller can selectively perform a plurality of defrosting modes including: a hot gas defrosting mode to defrost the outdoor heat exchanger by the refrigerant compressed by the compressor; and a heat absorption defrosting mode to defrost the outdoor heat exchanger by the refrigerant absorbing the heat from the heat-absorbed subject and compressed by the compressor. The controller sets a hot gas defrosting priority condition to preferentially select the hot gas defrosting mode.Type: ApplicationFiled: March 22, 2022Publication date: May 16, 2024Inventors: Megumi SHIGETA, Ryo MIYAKOSHI, Yoshiyuki OKAMOTO
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Patent number: 11973403Abstract: The variable-speed accelerator includes an electric device, a transmission device, and a power supply portion that supplies electric power of a constant rated frequency supplied from a power supply to the electric device when the electric device is started. The electric device includes a constant-speed electric motor that rotates a constant-speed input shaft of the transmission device, and a variable-speed electric motor that functions as a generator in a generator mode and also functions as an electric motor in an electric motor mode. When starting the electric device, the power supply portion supplies the electric power generated by the variable-speed electric motor in the generator mode to the constant-speed electric motor after supplying starting power to the constant-speed electric motor and the variable-speed electric motor.Type: GrantFiled: January 19, 2022Date of Patent: April 30, 2024Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Yoshiyuki Okamoto, Masahiro Kobayashi, Hiroyuki Miyata
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Patent number: 11613165Abstract: A vehicle air conditioner having a compressor to compress a refrigerant, an air flow passage to supply air to the vehicle; a radiator; an outdoor heat exchanger; a battery temperature adjustment device for letting a heat medium circulate through a battery mounted in the vehicle, thereby adjusting a temperature of the battery; and a control device. The battery temperature adjustment device has a refrigerant-heat medium heat exchanger for performing exchange of heat between the refrigerant and the heat medium. The control device is configured to execute: a radiator and outdoor heat exchanger heating/battery cooling mode, and an obstruct inflow heating/battery cooling mode.Type: GrantFiled: January 7, 2022Date of Patent: March 28, 2023Assignee: SANDEN CORPORATIONInventors: Tetsuya Ishizeki, Yoshiyuki Okamoto, Akira Horikoshi, Takashi Toyama, Nobuhiko Fujii
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Patent number: 11577579Abstract: A vehicle air-conditioning device includes a compressor 2, a radiator 4, an outdoor heat exchanger 7, a first heat medium circulating device 61 to let a first heat medium circulate in a heat medium heating heater 66, and a second heat medium circulating device 62 to let a second heat medium circulate in a battery 55. The first heat medium circulating device has a first heat medium heat exchanging unit 65A which exchanges heat between a refrigerant and the first heat medium. The second heat medium circulating device has a second heat medium heat exchanging unit 65B which exchanges heat between the first heat medium and the second heat medium.Type: GrantFiled: December 14, 2018Date of Patent: February 14, 2023Assignee: SANDEN CORPORATIONInventors: Tetsuya Ishizeki, Takefumi Tomiya, Yoshiyuki Okamoto
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Publication number: 20220252139Abstract: The variable-speed accelerator includes an electric device, a transmission device, and a power supply portion that supplies electric power of a constant rated frequency supplied from a power supply to the electric device when the electric device is started. The electric device includes a constant-speed electric motor that rotates a constant-speed input shaft of the transmission device, and a variable-speed electric motor that functions as a generator in a generator mode and also functions as an electric motor in an electric motor mode. When starting the electric device, the power supply portion supplies the electric power generated by the variable-speed electric motor in the generator mode to the constant-speed electric motor after supplying starting power to the constant-speed electric motor and the variable-speed electric motor.Type: ApplicationFiled: January 19, 2022Publication date: August 11, 2022Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Yoshiyuki Okamoto, Masahiro Kobayashi, Hiroyuki Miyata
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Publication number: 20220134842Abstract: A vehicle air conditioner having a compressor to compress a refrigerant, an air flow passage to supply air to the vehicle; a radiator; an outdoor heat exchanger; a battery temperature adjustment device for letting a heat medium circulate through a battery mounted in the vehicle, thereby adjusting a temperature of the battery; and a control device. The battery temperature adjustment device has a refrigerant-heat medium heat exchanger for performing exchange of heat between the refrigerant and the heat medium. The control device is configured to execute: a radiator and outdoor heat exchanger heating/battery cooling mode, and an obstruct inflow heating/battery cooling mode.Type: ApplicationFiled: January 7, 2022Publication date: May 5, 2022Applicant: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATIONInventors: Tetsuya ISHIZEKI, Takashi Toyama, Yoshiyuki Okamoto, Akira Horikoshi, Nobuhiko Fujii
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Patent number: 11254188Abstract: An air conditioner includes a battery temperature adjustment device which adjusts the temperature of a battery and has a refrigerant-heat medium heat exchanger to exchange heat between a refrigerant and a heat medium. A controller executes a first heating/battery cooling mode to let the refrigerant discharged from a compressor radiate heat in a radiator, decompress the refrigerant, and then let the refrigerant absorb heat in an outdoor heat exchanger and the refrigerant-heat medium heat exchanger, and a second heating/battery cooling mode to let the refrigerant discharged from the compressor radiate heat in the radiator and the outdoor heat exchanger, decompress the refrigerant, and then let the refrigerant absorb heat in the refrigerant-heat medium heat exchanger.Type: GrantFiled: March 9, 2018Date of Patent: February 22, 2022Assignee: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATIONInventors: Tetsuya Ishizeki, Yoshiyuki Okamoto, Akira Horikoshi, Takashi Toyama, Nobuhiko Fujii
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Patent number: 11189772Abstract: A thermoelectric power generator includes: a pipe in which a first fluid flows; a power generation module including a thermoelectric conversion element; and a holding member that is in contact with a one side part of the power generation module, such that heat of a second fluid that is higher in temperature than the first fluid transfers to the one side part of the power generation module. The holding member holds the power generation module and the pipe in a heat transferable state, such that the pipe is in contact with the other side part of the power generation module. The thermoelectric power generator includes a heat conductive component interposed between the holding member and the pipe to define a heat transfer course through which heat transfers from the second fluid to the first fluid, at downstream of the power generation module in a flowing direction of the second fluid.Type: GrantFiled: December 16, 2016Date of Patent: November 30, 2021Assignee: DENSO CORPORATIONInventors: Shinya Kitagawa, Yoshiyuki Okamoto, Takuya Matsuda
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Publication number: 20210323380Abstract: An object of the present invention is to provide a vehicle air conditioning device that can solve the decrease of a circulation refrigerant quantity while effectively using the heat of a temperature control object in heating a cabin. The heating operation of a vehicle air conditioning device (1) includes an external air heat absorption heating mode for heating a cabin in a manner that a refrigerant discharged from a compressor (2) radiates heat in a radiator (4), the refrigerant is decompressed, and then the refrigerant absorbs heat in an outdoor heat exchanger (7), and a temperature control object heat absorption heating mode for heating the cabin in a manner that the refrigerant absorbs heat in a refrigerant-heat medium heat exchanger (64), and these modes are performed while being switched. The heating operation is started in the external air heat absorption heating mode.Type: ApplicationFiled: September 13, 2019Publication date: October 21, 2021Inventors: Tetsuya ISHIZEKI, Takefumi TOMIYA, Yoshiyuki OKAMOTO, Takayuki MATSUMURA
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Patent number: 11105270Abstract: A control device for a rotary machine, which is driven by a turbine output torque which is an output of a turbine and an electric motor output torque which is an output of an induction motor, includes: a required output setting unit configured to set a required torque for driving the rotary machine; and a drive source command unit configured to set the electric motor output torque to a minimum torque or higher of the induction motor and to set the turbine output torque to a value obtained by subtracting the electric motor output torque from the required torque when the turbine output torque is greater than or equal to a lower limit in a stable output range of the turbine.Type: GrantFiled: September 27, 2016Date of Patent: August 31, 2021Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Tadashi Kawahara, Yoshiyuki Okamoto
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Patent number: 11077736Abstract: A vehicular air conditioner is provided which is capable of heating a vehicle interior with heat of a battery and also preventing deterioration in heating performance due to a decrease in circulating refrigerant. The vehicular air conditioner includes a battery temperature adjustment device 61 to circulate a heat medium to thereby adjust the temperature of a battery 55 mounted on a vehicle. The battery temperature adjustment device 61 has a refrigerant-heat medium heat exchanger 64 to exchange heat between the refrigerant and the heat medium, and includes a check valve 30 to return the refrigerant flowing out from the refrigerant-heat medium heat exchanger 64 to a suction side of the compressor 2 and to obstruct the flow of the refrigerant flowing out from the refrigerant-heat medium heat exchanger 64 and directed toward an outdoor heat exchanger 7 and a heat absorber 9.Type: GrantFiled: June 18, 2018Date of Patent: August 3, 2021Assignee: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATIONInventors: Tetsuya Ishizeki, Yoshiyuki Okamoto
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Patent number: 11060587Abstract: A variable-speed speed-up mechanism (1) includes an electric device (50) and a transmission device (10). In the transmission (10), an internal gear carrier shaft (37) forms a constant-speed input shaft (Ac), and a planetary gear carrier shaft (27) forms a variable-speed input shaft (Av). The electric device (50) includes a constant-speed electric motor (51) having a constant-speed rotor (52) which is configured to rotate the constant-speed input shaft (Ac), and a variable-speed electric motor (71) having a variable-speed rotor (72) which is connected to the variable-speed input shaft (Ac). The variable-speed speed-up mechanism (1) further includes a brake mechanism (200) which is configured to detect an abnormal state of the variable-speed electric motor (71), stop the rotation of at least one of the variable-speed input shaft (Ac) and the variable-speed rotor (72), and continue the rotation of the constant-speed rotor (52).Type: GrantFiled: May 12, 2016Date of Patent: July 13, 2021Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Masahiro Kobayashi, Yoshiyuki Okamoto
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Publication number: 20210190181Abstract: A variable-speed speed-up mechanism (1) includes an electric device (50) and a transmission device (10). In the transmission (10), an internal gear carrier shaft (37) forms a constant-speed input shaft (Ac), and a planetary gear carrier shaft (27) forms a variable-speed input shaft (Av). The electric device (50) includes a constant-speed electric motor (51) having a constant-speed rotor (52) which is configured to rotate the constant-speed input shaft (Ac), and a variable-speed electric motor (71) having a variable-speed rotor (72) which is connected to the variable-speed input shaft (Ac). The variable-speed speed-up mechanism (1) further includes a brake mechanism (200) which is configured to detect an abnormal state of the variable-speed electric motor (71), stop the rotation of at least one of the variable-speed input shaft (Ac) and the variable-speed rotor (72), and continue the rotation of the constant-speed rotor (52).Type: ApplicationFiled: May 12, 2016Publication date: June 24, 2021Applicants: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION, MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Masahiro Kobayashi, Yoshiyuki Okamoto
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Patent number: 11024787Abstract: A second fluid having a higher temperature than a first fluid, which flows in a duct, flows in contact with outside fins. Opposed regions of each power generation module and the duct apply pressure to and in contact with each other. Opposed regions of each power generation module and a corresponding one of a first outside plate and a second outside plate apply pressure to and in contact with each other. The duct is formed from a material having a thermal expansion coefficient larger than the first outside plate and the second outside plate. Additionally, two power generation modules are not necessarily required, and at least one power generation module is provided.Type: GrantFiled: September 13, 2016Date of Patent: June 1, 2021Assignee: DENSO CORPORATIONInventors: Takuya Matsuda, Shinya Kitagawa, Yoshiyuki Okamoto
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Patent number: 11025180Abstract: A variable speed accelerator is provided, including an electric driving device generating a rotational driving force, and a planetary gear transmission device changing the speed of the rotational driving force and transmitting the changed rotation driving force to a driving target. The electric driving device includes: a variable-speed motor having a variable-speed rotor connected to a variable-speed input shaft of the transmission device; and a constant-speed motor having a constant-speed rotor connected to a constant-speed input shaft of the transmission device. The variable-speed rotor and the planetary gear carrier shaft have a shaft insertion hole formed to pass therethrough in the axial direction.Type: GrantFiled: June 15, 2016Date of Patent: June 1, 2021Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Yoshiyuki Okamoto, Masahiro Nakashima
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Patent number: 10975936Abstract: A variable-speed accelerator includes: an electric device that generates a rotational driving force; and a planetary gear transmission device that changes a speed of the rotational driving force to a constant-speed input shaft and a variable-speed input shaft, and transmits the rotational driving force to a driving target via an output shaft, wherein the electric device includes a constant-speed electric motor including a constant-speed rotor that rotates the constant-speed input shaft in a second direction, and a variable-speed electric motor that includes a variable-speed rotor connected to the variable-speed input shaft, which functions as a generator in a generator mode and as an electric motor in an electric motor mode, and which rotates the output shaft at a maximum rotational speed by rotating the variable-speed rotor at the maximum rotational speed in a first direction.Type: GrantFiled: June 15, 2017Date of Patent: April 13, 2021Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Yoshiyuki Okamoto, Masahiro Kobayashi
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Publication number: 20210066568Abstract: A thermoelectric power generator includes: a pipe in which a first fluid flows; a power generation module including a thermoelectric conversion element; and a holding member that is in contact with a one side part of the power generation module, such that heat of a second fluid that is higher in temperature than the first fluid transfers to the one side part of the power generation module. The holding member holds the power generation module and the pipe in a heat transferable state, such that the pipe is in contact with the other side part of the power generation module. The thermoelectric power generator includes a heat conductive component interposed between the holding member and the pipe to define a heat transfer course through which heat transfers from the second fluid to the first fluid, at downstream of the power generation module in a flowing direction of the second fluid.Type: ApplicationFiled: December 16, 2016Publication date: March 4, 2021Inventors: Shinya KITAGAWA, Yoshiyuki OKAMOTO, Takuya MATSUDA
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Patent number: 10865855Abstract: The present invention provides a variable-speed speed-up gear including an electric driving device (50) that generates a rotational driving force, and a planetary gear transmission device (10) that changes the speed of the rotational driving force generated by the electric driving device (50) and transmit the changed rotation driving force to a driving target, wherein a sun gear shaft (12) forms an output shaft (Ao) connected to the driving target, an internal gear carrier shaft (37) configures a constant-speed input shaft (Ac), and a planetary gear carrier shaft (27) configures a variable-speed input shaft (Av), the electric driving device (50) includes a constant-speed motor (51) having a constant-speed rotor (52) which is configured to rotate a constant-speed input shaft of the transmission device, and a variable-speed motor (71) having a variable-speed rotor (72) which is configured to rotate the variable-speed input shaft of the transmission device, the variable-speed rotor (72) and the planetary gear caType: GrantFiled: August 29, 2016Date of Patent: December 15, 2020Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Yoshiyuki Okamoto, Masahiro Kobayashi