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).

  • Patent number: 11613165
    Abstract: 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: Grant
    Filed: January 7, 2022
    Date of Patent: March 28, 2023
    Assignee: SANDEN CORPORATION
    Inventors: Tetsuya Ishizeki, Yoshiyuki Okamoto, Akira Horikoshi, Takashi Toyama, Nobuhiko Fujii
  • Patent number: 11577579
    Abstract: 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: Grant
    Filed: December 14, 2018
    Date of Patent: February 14, 2023
    Assignee: SANDEN CORPORATION
    Inventors: Tetsuya Ishizeki, Takefumi Tomiya, Yoshiyuki Okamoto
  • Publication number: 20220252139
    Abstract: 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: Application
    Filed: January 19, 2022
    Publication date: August 11, 2022
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Yoshiyuki Okamoto, Masahiro Kobayashi, Hiroyuki Miyata
  • Publication number: 20220134842
    Abstract: 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: Application
    Filed: January 7, 2022
    Publication date: May 5, 2022
    Applicant: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATION
    Inventors: Tetsuya ISHIZEKI, Takashi Toyama, Yoshiyuki Okamoto, Akira Horikoshi, Nobuhiko Fujii
  • Patent number: 11254188
    Abstract: 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: Grant
    Filed: March 9, 2018
    Date of Patent: February 22, 2022
    Assignee: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATION
    Inventors: Tetsuya Ishizeki, Yoshiyuki Okamoto, Akira Horikoshi, Takashi Toyama, Nobuhiko Fujii
  • Patent number: 11189772
    Abstract: 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: Grant
    Filed: December 16, 2016
    Date of Patent: November 30, 2021
    Assignee: DENSO CORPORATION
    Inventors: Shinya Kitagawa, Yoshiyuki Okamoto, Takuya Matsuda
  • Publication number: 20210323380
    Abstract: 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: Application
    Filed: September 13, 2019
    Publication date: October 21, 2021
    Inventors: Tetsuya ISHIZEKI, Takefumi TOMIYA, Yoshiyuki OKAMOTO, Takayuki MATSUMURA
  • Patent number: 11105270
    Abstract: 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: Grant
    Filed: September 27, 2016
    Date of Patent: August 31, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Tadashi Kawahara, Yoshiyuki Okamoto
  • Patent number: 11077736
    Abstract: 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: Grant
    Filed: June 18, 2018
    Date of Patent: August 3, 2021
    Assignee: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATION
    Inventors: Tetsuya Ishizeki, Yoshiyuki Okamoto
  • Patent number: 11060587
    Abstract: 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: Grant
    Filed: May 12, 2016
    Date of Patent: July 13, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Masahiro Kobayashi, Yoshiyuki Okamoto
  • Publication number: 20210190181
    Abstract: 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: Application
    Filed: May 12, 2016
    Publication date: June 24, 2021
    Applicants: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION, MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Masahiro Kobayashi, Yoshiyuki Okamoto
  • Patent number: 11024787
    Abstract: 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: Grant
    Filed: September 13, 2016
    Date of Patent: June 1, 2021
    Assignee: DENSO CORPORATION
    Inventors: Takuya Matsuda, Shinya Kitagawa, Yoshiyuki Okamoto
  • Patent number: 11025180
    Abstract: 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: Grant
    Filed: June 15, 2016
    Date of Patent: June 1, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Yoshiyuki Okamoto, Masahiro Nakashima
  • Patent number: 10975936
    Abstract: 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: Grant
    Filed: June 15, 2017
    Date of Patent: April 13, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Yoshiyuki Okamoto, Masahiro Kobayashi
  • Publication number: 20210066568
    Abstract: 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: Application
    Filed: December 16, 2016
    Publication date: March 4, 2021
    Inventors: Shinya KITAGAWA, Yoshiyuki OKAMOTO, Takuya MATSUDA
  • Patent number: 10865855
    Abstract: 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 ca
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: December 15, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Yoshiyuki Okamoto, Masahiro Kobayashi
  • Patent number: 10837526
    Abstract: A variable-speed speed-up mechanism includes: an electric device generating a rotation driving force; and a transmission device changing a speed of the rotation driving force and transmitting the rotation driving force to a target to be driven. The transmission device includes: a sun gear rotating around an axis line; a sun gear shaft fixed to the sun gear and extending in an axial direction around the axis line; a planetary gear meshing with the sun gear, revolving around the axis line, and rotating around a center line of the planetary gear; a gear meshing with the planetary gear; a planetary gear carrier including a planetary gear carrier shaft extending in the axial direction around the axis line and supporting the planetary gear; and a gear carrier including a gear carrier shaft extending in the axial direction around the axis line and supporting the gear.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: November 17, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Yoshiyuki Okamoto, Masahiro Nakashima, Yasushi Hirota
  • Publication number: 20200346520
    Abstract: There is provided a vehicle air-conditioning device capable of realizing an efficient air-conditioning operation without being affected by a temperature of a heat generating device mounted on a vehicle. The 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: Application
    Filed: December 14, 2018
    Publication date: November 5, 2020
    Inventors: Tetsuya ISHIZEKI, Takefumi TOMIYA, Yoshiyuki OKAMOTO
  • Publication number: 20200318714
    Abstract: A variable speed gearbox includes: an electric driving device which generates a rotational driving force; and a transmission device which changes the speed of the rotational driving force and transmits the changed rotation driving force to a driving target. The transmission device includes: a sun gear; a sun gear shaft; a planetary gear which meshes with the sun gear; an internal gear which meshes with the planetary gear; a planetary gear carrier which has a planetary gear carrier shaft; and an internal gear carrier which has an internal gear carrier shaft. The electric driving device includes: a constant-speed motor having a constant-speed rotor; and a variable-speed motor having a variable-speed rotor. The internal gear carrier includes a clutch mechanism including: a moving portion; a drive portion; a fixed portion; and an engaging portion which engages the moving portion and the fixed portion.
    Type: Application
    Filed: July 20, 2016
    Publication date: October 8, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hiroyuki Miyata, Masahiro Kobayashi, Yasushi Mori, Yoshiyuki Okamoto
  • Publication number: 20200292033
    Abstract: A variable-speed speed-up mechanism includes: an electric device generating a rotation driving force; and a transmission device changing a speed of the rotation driving force and transmitting the rotation driving force to a target to be driven. The transmission device includes: a sun gear rotating around an axis line; a sun gear shaft fixed to the sun gear and extending in an axial direction around the axis line; a planetary gear meshing with the sun gear, revolving around the axis line, and rotating around a center line of the planetary gear; a gear meshing with the planetary gear; a planetary gear carrier including a planetary gear carrier shaft extending in the axial direction around the axis line and supporting the planetary gear; and a gear carrier including a gear carrier shaft extending in the axial direction around the axis line and supporting the gear.
    Type: Application
    Filed: May 19, 2017
    Publication date: September 17, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Yoshiyuki Okamoto, Masahiro Nakashima, Yasushi Hirota