Patents by Inventor Ryo Miyakoshi

Ryo Miyakoshi 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: 11104205
    Abstract: A vehicle air-conditioning device is provided which is capable of eliminating inconvenience due to a reduction in heating capability when changing from heat absorption from outdoor air to heat absorption from a heat medium. A heat-generating equipment temperature adjusting device 61 has a heat medium heating heater 66 and a refrigerant-heat medium heat exchanger 64. The vehicle air-conditioning device has first and second heat medium heat absorption/heating modes to let a refrigerant discharged from a compressor 2 radiate heat in a radiator 4, decompress the refrigerant from which the heat has been radiated, and then let the refrigerant absorb heat in the refrigerant-heat medium heat exchanger. When the temperature of the heat medium is a predetermined threshold T1 or less upon changing from a heating operation to the first and second heat medium heat absorption/heating modes, the heat medium is heated by the heat medium heating heater before the changing.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: August 31, 2021
    Assignee: Sanden Automotive Climate Systems Corporation
    Inventors: Tetsuya Ishizeki, Ryo Miyakoshi, Kohei Yamashita
  • Patent number: 11097599
    Abstract: There is provided a vehicle air conditioning device of a heat pump system which improves comfortability when changing to heating only by an auxiliary heating device. The device includes a heating medium circulating circuit 23 to heat air to be supplied from an air flow passage 3 to a vehicle interior, and when shifting to the heating of the vehicle interior only by the heating medium circulating circuit 23 in a heating mode, a controller executes a shifting control to increase a heating capability of the heating medium circulating circuit 23 prior to stopping a compressor 2 and decrease a heating capability of a radiator 4 in accordance with the increase of the heating capability of the heating medium circulating circuit 23.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: August 24, 2021
    Assignees: HONDA MOTOR CO., LTD., SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATION
    Inventors: Ryo Miyakoshi, Kenichi Suzuki, Kohei Yamashita
  • Publication number: 20210245577
    Abstract: There is provided a vehicle air conditioning apparatus capable of removing frost formed on an outdoor heat exchanger at the same time as cooling of a battery. The vehicle air conditioning apparatus performs the operation in a first battery cooling mode, a second battery cooling mode, or a solo battery cooling mode, when it is determined that the battery needs to be cooled and also determined that the frost formed on the outdoor heat exchanger needs to be removed. By this means, it is possible to cool the battery and melt the frost formed on the outdoor heat exchanger at the same time by the battery cooling operation, and therefore it is possible to reduce the power consumption compared to the case where the battery cooling operation and the defrosting operation are performed individually.
    Type: Application
    Filed: June 7, 2019
    Publication date: August 12, 2021
    Applicant: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATION
    Inventor: Ryo MIYAKOSHI
  • Patent number: 11021044
    Abstract: There is disclosed a vehicle air conditioner device of a so-called heat pump system to accurately perform efficient and comfortable heating of a vehicle interior. The vehicle air conditioner device includes a heating medium circulating circuit 23 which heats air to be supplied from an air flow passage 3 to a vehicle interior. A controller calculates a required heating capability TGQhtr of the heating medium circulating circuit to complement a shortage of an actual heating capability Qhp to a required heating capability TGQ of a radiator 4. The controller calculates a decrease amount ?Qhp of the actual heating capability Qhp from a difference ?TXO between a refrigerant evaporation temperature TXO of an outdoor heat exchanger 7 and a refrigerant evaporation temperature TXObase in non-frosting, and adds the decrease amount ?Qhp to the required heating capability TGQhtr to execute the heating by the heating medium circulating circuit.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: June 1, 2021
    Assignee: Sanden Holdings Corporation
    Inventors: Kenichi Suzuki, Ryo Miyakoshi, Kouhei Yamashita, Megumi Shigeta
  • Patent number: 11021625
    Abstract: An ink includes a coloring material, an acrylic resin particle, an organic solvent, and water, wherein a solid dry film of the ink has a breaking elongation ratio of 50 percent or more, a storage elastic modulus G? of 1.0×106 Pa or more at 50 degrees C., and a swelling ratio of 40 percent or less to ethylacetate.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: June 1, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryota Iwasaki, Ryo Miyakoshi, Yuya Hirokawa
  • Patent number: 11007847
    Abstract: Vehicle air conditioning device of a heat pump system in which comfort is compatible with decrease of power consumption. The vehicle air conditioning device includes a heating medium circulating circuit 23 to heat air to be supplied from an air flow passage 3 to a vehicle interior, and in a heating mode, a controller has an energy saving prior mode in which the controller operates a compressor 2 at a maximum number of revolution and complements a shortage of a heating capability by a radiator 4 with heating by a heating medium-air heat exchanger 40 of the heating medium circulating circuit 23, and a comfort prior mode in which the controller limits a number of revolution of the compressor 2 and complements the shortage of the heating capability by the radiator 4 with the heating by the heating medium-air heat exchanger 40 of the heating medium circulating circuit 23.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: May 18, 2021
    Assignee: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATION
    Inventors: Ryo Miyakoshi, Kenichi Suzuki, Kohei Yamashita
  • Publication number: 20210094391
    Abstract: A vehicle air-conditioning device is provided which is capable of eliminating or suppressing vibration and noise generated due to the application of a counterpressure to an opening/closing valve. The vehicle air-conditioning device includes a refrigerant circuit R having a compressor 2, a radiator 4 to perform heat exchange between a refrigerant and air, an outdoor heat exchanger 7, a heat absorber 9, and a solenoid valve 40. The compressor 2 and the solenoid valve 40 are controlled to air-condition a vehicle interior. A decompression speed at a refrigerant inflow side of the solenoid valve when the compressor 2 is stopped and the solenoid valve 40 is closed is faster than that at a refrigerant outflow side thereof. When operation is stopped from a state in which the compressor 2 is operating with the solenoid valve 40 being in an opened state, the opened state of the solenoid valve 40 is maintained even after the compressor 2 is stopped.
    Type: Application
    Filed: April 23, 2018
    Publication date: April 1, 2021
    Inventors: Ryo MIYAKOSHI, Megumi SHIGETA, Osamu TAKAZAWA, Kohei YAMASHITA
  • Publication number: 20210086591
    Abstract: A vehicle air conditioner capable of making a determination that the dehumidification is unnecessary in a vehicle interior early to make a prompt transition from a dehumidifying mode to a heating mode and reduce power consumption is provided. A control device executes a heating mode to let a refrigerant discharged from a compressor 2 radiate heat in a radiator, decompress the refrigerant, and then let the refrigerant absorb heat in an outdoor heat exchanger 7, and a dehumidifying mode to let the refrigerant flow into the outdoor heat exchanger without flowing to the radiator to radiate heat therein, decompress the refrigerant, and then let the refrigerant absorb heat in a heat absorber 9 and let an auxiliary heater 23 generate heat. The control device shifts from the dehumidifying mode to the heating mode on the basis of the heat absorber suction air temperature Tevain being lowered more than a target heat absorber temperature TEO.
    Type: Application
    Filed: July 12, 2018
    Publication date: March 25, 2021
    Inventors: Kohei YAMASHITA, Ryo MIYAKOSHI
  • Patent number: 10953724
    Abstract: There is disclosed a vehicle air-conditioning device in which a refrigerant subcool degree in a radiator is appropriately controlled, so that comfortable and efficient vehicle interior air conditioning is achievable. The vehicle air-conditioning device executes a heating mode in which a controller lets a refrigerant discharged from a compressor 2 radiate heat in a radiator 4, decompresses the refrigerant by which heat has been radiated by an outdoor expansion valve 6, and then lets the refrigerant absorb heat in an outdoor heat exchanger 7. In the heating mode, the vehicle air-conditioning device controls a refrigerant subcool degree SC of the radiator 4 by the outdoor expansion valve 6. On a basis of a radiator inlet air temperature THin that is a temperature of the air flowing into the radiator 4, the controller corrects a target subcool degree TGSC that is a target value of the refrigerant subcool degree SC in the radiator 4 in a lowering direction, as the radiator inlet air temperature THin rises.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: March 23, 2021
    Assignee: Sanden Holdings Corporation
    Inventors: Kenichi Suzuki, Ryo Miyakoshi, Kouhei Yamashita
  • Patent number: 10946719
    Abstract: A vehicle air-conditioning device may achieve comfortable heating of a vehicle interior by starting a compressor, an indoor blower and heat generating means at appropriate timing. The vehicle air-conditioning device includes a compressor which compresses a refrigerant, a radiator disposed in an air flow passage to let the refrigerant radiate heat, a heat absorber which lets the refrigerant absorb heat, and an indoor blower which blows the air through the air flow passage. The vehicle interior is heated by heat radiated from the radiator. The vehicle air-conditioning device includes a heating medium-air heat exchanger of a heating medium circulating circuit disposed in the air flow passage to heat air supplied to the vehicle interior. On a basis of an outdoor air temperature, the timing to start the compressor, the indoor blower and the heating medium circulating circuit is controlled.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: March 16, 2021
    Assignee: Sanden Holdings Corporation
    Inventors: Kenichi Suzuki, Ryo Miyakoshi
  • Patent number: 10946723
    Abstract: A vehicle air conditioner which is capable of inhibiting liquid return to a compressor and generation of noise due to bumping in an accumulator. There are executed a heating mode to close a solenoid valve 17, open a solenoid valve 21, let a refrigerant radiate heat in a radiator 4, decompress the refrigerant through an outdoor expansion valve 6, let the refrigerant absorb heat in an outdoor heat exchanger 7, and send the refrigerant to an accumulator 12, and a dehumidifying and heating mode to open the solenoid valve 17, close the solenoid valve 21, decompress the refrigerant through an indoor expansion valve 8, let the refrigerant absorb heat in a heat absorber, and generate heat in an auxiliary heater 23. A valve position of the outdoor expansion valve 6 is reduced for a predetermined period of time before shifting from the heating mode to the dehumidifying and heating mode.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: March 16, 2021
    Assignee: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATION
    Inventors: Tetsuya Ishizeki, Kazuki Sekiguchi, Kohei Yamashita, Ryo Miyakoshi
  • Patent number: 10933719
    Abstract: A vehicle air-conditioning apparatus is provided which is capable of efficiently eliminating or suppressing fogging of a window while comfortably heating a vehicle interior. A controller changes and executes a heating mode to let a refrigerant discharged from a compressor 2 radiate heat in a radiator 4, and a dehumidifying and heating mode to let the refrigerant discharged from the compressor radiate heat in the radiator and let the refrigerant absorb heat in a heat absorber 9. When the temperature of air blown out to the vehicle interior is not capable of reaching a target outlet temperature in the dehumidifying and heating mode, the controller actuates a window heater 35 heating a front window 30 and shifts to the heating mode.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: March 2, 2021
    Assignee: Sanden Automotive Climate Systems Corporation
    Inventors: Tetsuya Ishizeki, Kouhei Yamashita, Ryo Miyakoshi
  • Patent number: 10926609
    Abstract: There is disclosed a vehicle air conditioning device which is capable of judging, as early as possible, refrigerant shortage, for example, due to leakage of refrigerant with elapse of time, and protecting a compressor. The vehicle air conditioning device includes a compressor 2, a radiator 4, an outdoor expansion valve 6, and a heat absorber 9. A control device possesses normal time data indicating a relation between a suction refrigerant temperature Ts and a discharge refrigerant temperature Td of the compressor when a refrigerant circuit R is charged with a sufficient amount of the refrigerant. The control device calculates, from the normal time data, a discharge refrigerant temperature estimated value Tdst at normal time on the basis of the current suction refrigerant temperature Ts, and compares the value and the current discharge refrigerant temperature Td, thereby judging refrigerant shortage of the refrigerant circuit.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: February 23, 2021
    Assignee: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATION
    Inventors: Tetsuya Ishizeki, Yuma Yamazaki, Akira Horikoshi, Kohei Yamashita, Ryo Miyakoshi, Megumi Shigeta
  • Publication number: 20210016629
    Abstract: There is provided a vehicle air conditioning device of a heat pump system which improves comfortability when changing to heating only by an auxiliary heating device. The device includes a heating medium circulating circuit 23 to heat air to be supplied from an air flow passage 3 to a vehicle interior, and when shifting to the heating of the vehicle interior only by the heating medium circulating circuit 23 in a heating mode, a controller executes a shifting control to increase a heating capability of the heating medium circulating circuit 23 prior to stopping a compressor 2 and decrease a heating capability of a radiator 4 in accordance with the increase of the heating capability of the heating medium circulating circuit 23.
    Type: Application
    Filed: February 21, 2017
    Publication date: January 21, 2021
    Applicant: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATION
    Inventors: Ryo MIYAKOSHI, Kenichi SUZUKI, Kohei YAMASHITA
  • Publication number: 20210009824
    Abstract: An ink includes a coloring material, a crystalline polyester urethane resin, and a non-crystalline polyurethane resin, wherein dry matter of the ink has a differential scanning calorimetry curve having a melting peak temperature (Tm) of from 30 to 100 degrees C. as measured with a differential scanning calorimeter.
    Type: Application
    Filed: July 7, 2020
    Publication date: January 14, 2021
    Inventors: Ryo MIYAKOSHI, Chikako HATTA
  • Patent number: 10870332
    Abstract: A vehicle air conditioner is provided which is capable of detecting a refrigerant lack accompanying a refrigerant leakage and the like over time at the earliest possible stage and protecting a compressor. The vehicle air conditioner is provided with a compressor 2, a radiator 4, an outdoor expansion valve 6, and a heat absorber 9. The vehicle air conditioner holds normal time data indicating a relation between the number of revolutions NC of the compressor and a discharge refrigerant temperature Td thereof when a sufficient amount of refrigerant is filled in a refrigerant circuit R. The present invention calculates a discharge refrigerant temperature estimated value Tdst in normal time from the normal time data on the basis of a current number of revolutions NC and compares the discharge refrigerant temperature estimated value Tdst with a current discharge refrigerant temperature Td to determine a refrigerant lack of the refrigerant circuit.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: December 22, 2020
    Assignee: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATION
    Inventors: Tetsuya Ishizeki, Yuma Yamazaki, Akira Horikoshi, Ryo Miyakoshi, Kohei Yamashita, Megumi Shigeta
  • Patent number: 10843527
    Abstract: A vehicle air conditioner has a bypass pipe which passes a radiator, an outdoor expansion valve, and opening/closing valves. A controller is configured to execute a heating mode to open a first solenoid valve and close a second solenoid valve, and a dehumidifying and heating mode to close the first solenoid valve, open the second solenoid valve, let a refrigerant radiate heat in an outdoor heat exchanger, let the refrigerant absorb heat in a heat absorber, and generate heat in an auxiliary heater. When changing from the heating mode to the dehumidifying and heating mode, the controller sends the refrigerant to a receiver drier, controls a compressor to reduce a difference between pressures before and after the second solenoid valve, opens the second solenoid valve, closes the first solenoid valve, shuts off the outdoor expansion valve, and shifts the compressor to control in the dehumidifying and heating mode.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: November 24, 2020
    Assignee: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATION
    Inventors: Kenichi Suzuki, Ryo Miyakoshi, Kohei Yamashita
  • Patent number: 10814698
    Abstract: A vehicle air conditioning device which is capable of inhibiting liquid return to a compressor and generation of noise due to bumping in an accumulator. There are executed a heating mode to close a solenoid valve 17, open a solenoid valve 21, let a refrigerant from a compressor 2 radiate heat in a radiator 4, decompress the refrigerant through an outdoor expansion valve 6, let the refrigerant absorb heat in an outdoor heat exchanger 7, and send the refrigerant to an accumulator 12, and a dehumidifying and cooling mode to open the solenoid valve 17, close the solenoid valve 21, decompress the refrigerant through an indoor expansion valve 8, let the refrigerant absorb heat in a heat absorber, and send the refrigerant to the accumulator. When shifting from the heating mode to the dehumidifying and cooling mode, the solenoid valve 21 is opened for a predetermined period of time.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: October 27, 2020
    Assignee: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATION
    Inventors: Tetsuya Ishizeki, Kazuki Sekiguchi, Kohei Yamashita, Ryo Miyakoshi
  • Publication number: 20200307246
    Abstract: White ink includes a crystalline urethane resin and a coloring material.
    Type: Application
    Filed: March 30, 2020
    Publication date: October 1, 2020
    Inventors: Chikako HATTA, Ryo MIYAKOSHI
  • Patent number: 10712066
    Abstract: There is disclosed a vehicle air conditioner of a heat pump system in which there is prevented or inhibited frosting to an outdoor heat exchanger when heating in a vehicle interior is beforehand performed during plug-in, thereby achieving comfortable heating in the vehicle interior during running and also extending a running distance. The vehicle air conditioner includes an injection circuit 40 which distributes a refrigerant flowing out from a radiator 4 to return the refrigerant to the middle of compression by a compressor 2, a controller has frosting estimation means for estimating the frosting to an outdoor heat exchanger 7, and when a heating mode is executed in a state where a power is supplied from an external power source to the compressor 2 or to a battery which supplies the power to drive the compressor 2, the injection circuit 40 performs gas injection to the compressor 2 in a case where the frosting to the outdoor heat exchanger 7 is predicted.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: July 14, 2020
    Assignee: SANDEN HOLDINGS CORPORATION
    Inventors: Ryo Miyakoshi, Kenichi Suzuki