Patents by Inventor Syou Ishii

Syou Ishii 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).

  • Heat pump-type heating device
    Patent number: 9157667
    Abstract: A unitary-side heat pump unit is configured so that a refrigerant circulates sequentially through a first compressor, a first heat exchanger, a cascade heat exchanger, a first expansion valve and an evaporator, and heat exchange with heat media of a heating unit is carried out in the first heat exchanger; a binary-side heat pump unit is configured so that a refrigerant circulates sequentially through a second compressor, a second heat exchanger, a second expansion valve and a cascade heat exchanger, and heat exchange with heat media of the heating unit is carried out in the second heat exchanger; the refrigerants of the unitary-side and binary-side heat pump units include carbon dioxide (CO2) as a main component; and high pressure-side sections of the unitary-side and binary-side heat pump units are activated within substantially identical pressure ranges of supercritical pressure.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: October 13, 2015
    Assignee: SANDEN CORPORATION
    Inventors: Junichiro Kasuya, Yasuaki Kanou, Syou Ishii
  • Heat Pump Type Air-Warming Device
    Publication number: 20130227979
    Abstract: A unitary-side heat pump unit is configured so that a refrigerant circulates sequentially through a first compressor, a first heat exchanger, a cascade heat exchanger, a first expansion valve and an evaporator, and heat exchange with heat media of a heating unit is carried out in the first heat exchanger; a binary-side heat pump unit is configured so that a refrigerant circulates sequentially through a second compressor, a second heat exchanger, a second expansion valve and a cascade heat exchanger, and heat exchange with heat media of the heating unit is carried out in the second heat exchanger; the refrigerants of the unitary-side and binary-side heat pump units include carbon dioxide (CO2) as a main component; and high pressure-side sections of the unitary-side and binary-side heat pump units are activated within substantially identical pressure ranges of supercritical pressure.
    Type: Application
    Filed: September 20, 2011
    Publication date: September 5, 2013
    Inventors: Junichiro Kasuka, Yasuaki Kanou, Syou Ishii