Patents by Inventor Mitsuaki NAGATA

Mitsuaki NAGATA 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: 11267315
    Abstract: An air-conditioning device includes: a compressor; an outdoor heat exchanger; an evaporating unit configured to evaporate refrigerant a heater unit configured to heat the air by using the heat of the refrigerant a liquid receiver arranged at the downstream side of the outdoor heat exchanger and a restrictor mechanism provided between the heater unit and the outdoor heat exchanger, wherein, in an operation state in which the flow of the refrigerant is restricted by the restrictor mechanism and heat is released in the heater unit, a first operation mode and a second operation mode are switched, the first operation mode being set such that the liquid-phase refrigerant is stored in the liquid receiver and the gaseous-phase refrigerant is guided to the compressor and the second operation mode being set such that the liquid-phase refrigerant stored in the liquid receiver is guided to the evaporating unit.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: March 8, 2022
    Assignee: Marelli Cabin Comfort Japan Corporation
    Inventors: Jun Hatakeyama, Satoshi Ogihara, Tatsuya Osaki, Tomohiro Maeda, Mitsuaki Nagata, Yasuhito Ookawara
  • Patent number: 11235262
    Abstract: This gas-liquid separator is provided with: a tank part which stores and separates a refrigerant; and a pipe connection part forming outlet/inlet ports for the refrigerant from the tank part. The pipe connection part has: a first connection part having a first connection pipe which guides the refrigerant to an expansion valve; a second connection part having a second connection pipe through which the cooled refrigerant returns; a third connection part having a third connection pipe which guides the refrigerant to a compressor; a fourth connection part having a fourth connection pipe which guides the refrigerant into the tank part from an outdoor heat exchanger; and a first flow path switching valve which allows the inside of the tank part to communicate with the third connection pipe during heating operations, and allows the second connection pipe to communicate with the third connection pipe during cooling operations.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: February 1, 2022
    Assignee: Marelli Cabin Comfort Japan Corporation
    Inventors: Tatsuya Osaki, Mitsuaki Nagata, Akihiro Okajima
  • Publication number: 20200254846
    Abstract: An air-conditioning device includes: a compressor; an outdoor heat exchanger; an evaporating unit configured to evaporate refrigerant a heater unit configured to heat the air by using the heat of the refrigerant a liquid receiver arranged at the downstream side of the outdoor heat exchanger and a restrictor mechanism provided between the heater unit and the outdoor heat exchanger, wherein, in an operation state in which the flow of the refrigerant is restricted by the restrictor mechanism and heat is released in the heater unit, a first operation mode and a second operation mode are switched, the first operation mode being set such that the liquid-phase refrigerant is stored in the liquid receiver and the gaseous-phase refrigerant is guided to the compressor and the second operation mode being set such that the liquid-phase refrigerant stored in the liquid receiver is guided to the evaporating unit.
    Type: Application
    Filed: September 14, 2018
    Publication date: August 13, 2020
    Inventors: Jun Hatakeyama, Satoshi Ogihara, Tatsuya Osaki, Tomohiro Maeda, Mitsuaki Nagata, Yasuhito Ookawara
  • Publication number: 20190299126
    Abstract: This gas-liquid separator is provided with: a tank part which stores and separates a refrigerant; and a pipe connection part forming outlet/inlet ports for the refrigerant from the tank part. The pipe connection part has: a first connection part having a first connection pipe which guides the refrigerant to an expansion valve; a second connection part having a second connection pipe through which the cooled refrigerant returns; a third connection part having a third connection pipe which guides the refrigerant to a compressor; a fourth connection part having a fourth connection pipe which guides the refrigerant into the tank part from an outdoor heat exchanger; and a first flow path switching valve which allows the inside of the tank part to communicate with the third connection pipe during heating operations, and allows the second connection pipe to communicate with the third connection pipe during cooling operations.
    Type: Application
    Filed: November 8, 2017
    Publication date: October 3, 2019
    Inventors: Tatsuya Osaki, Mitsuaki Nagata, Akihiro Okajima
  • Publication number: 20190291542
    Abstract: This air conditioning device, which is installed in a vehicle, is provided with a gas-liquid separator which separates liquid-phase refrigerant and gas-phase refrigerant, guides, to a compressor, the gas-phase refrigerant flowing in from an outdoor heat exchanger during heating operations, and guides, to an expansion valve, the liquid-phase refrigerant flowing in from the outdoor heat exchanger during cooling operations. The gas-liquid separator is provided further rearward inside the vehicle than the outdoor heat exchanger. The compressor is provided further rearward inside the vehicle than the gas-liquid separator.
    Type: Application
    Filed: November 8, 2017
    Publication date: September 26, 2019
    Applicant: Calsonic Kansei Corporation
    Inventors: Tatsuya OSAKI, Mitsuaki NAGATA, Akihiro OKAJIMA