Patents by Inventor Soichiro Fujita

Soichiro Fujita 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: 11981183
    Abstract: This air conditioning device for a vehicle has: an indoor condenser; an indoor evaporator; a first expansion valve; a second expansion valve; a refrigerant line; an expansion valve control detector; and a controller. The expansion valve control detector is constituted by: only one temperature sensor that detects the temperature of refrigerant in an inter-expansion valve line of the refrigerant line; and only one pressure sensor that detects the pressure of the refrigerant in the inter-expansion valve line. During a cooling operation, the controller issues, to the first expansion valve, an opening command corresponding to a state quantity of the refrigerant that has been detected by the expansion valve control detector, and during a heating operation, the controller issues, to the second expansion valve, an opening command corresponding to a state quantity of the refrigerant that has been detected by the expansion valve control detector.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: May 14, 2024
    Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Nobuya Nakagawa, Yasuo Katayama, Soichiro Fujita
  • Publication number: 20210252943
    Abstract: This air conditioning device for a vehicle comprises: an indoor condenser; an indoor evaporator; a first expansion valve; a second expansion valve; a refrigerant line; an expansion valve control detector; and a controller. The expansion valve control detector is constituted by: only one temperature sensor that detects the temperature of refrigerant in an inter-expansion valve line of the refrigerant line; and only one pressure sensor that detects the pressure of the refrigerant in the inter-expansion valve line. During a cooling operation, the controller issues, to the first expansion valve, an opening command corresponding to a state quantity of the refrigerant that has been detected by the expansion valve control detector, and during a heating operation, the controller issues, to the second expansion valve, an opening command corresponding to a state quantity of the refrigerant that has been detected by the expansion valve control detector.
    Type: Application
    Filed: May 24, 2019
    Publication date: August 19, 2021
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Nobuya NAKAGAWA, Yasuo KATAYAMA, Soichiro FUJITA
  • Patent number: 9278604
    Abstract: Provided is a vehicle air conditioning device including an air conditioning unit in which: a unit case (10) of the air conditioning unit is formed of a plurality of lower and upper divided cases (23, 24, 25); and the divided cases (23, 24, 25) are coupled integrally to each other through a mating portion (34) provided to division end surfaces (30A, 30B, 32). The vehicle air conditioning device also includes a space (35) having a given height in the top-bottom direction and a given width is formed between respective case inner division end surfaces (32, 30B) of the divided cases (24, 25) on one side and the divided case (23) on the other side, the divided cases (23, 24, 25) constituting the mating portion (34).
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: March 8, 2016
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Noriyuki Chikagawa, Soichiro Fujita
  • Publication number: 20120247717
    Abstract: Provided is a vehicle air conditioning device including an air conditioning unit in which: a unit case (10) of the air conditioning unit is formed of a plurality of lower and upper divided cases (23, 24, 25); and the divided cases (23, 24, 25) are coupled integrally to each other through a mating portion (34) provided to division end surfaces (30A, 30B, 32). The vehicle air conditioning device also includes a space. (35) having a given height in the top-bottom direction and a given width is formed between respective case inner division end surfaces (32, 30B) of the divided cases (24, 25) on one side and the divided case (23) on the other side, the divided cases (23, 24, 25) constituting the mating portion (34).
    Type: Application
    Filed: May 25, 2011
    Publication date: October 4, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Noriyuki Chikagawa, Soichiro Fujita
  • Patent number: 7845391
    Abstract: Sharp bends in a defrost duct extending from a defrost outlet to a windshield, and in a face duct extending from a face outlet to both sides of a front passenger seat, are eliminated and the duct resistance of these ducts is reduced. Moreover collision safety of passengers is improved, and an interior space of a vehicle is expanded forward. In an air-conditioning unit to be positioned to the front of a front seat of a vehicle, an evaporator is positioned below and behind a blower, and a heater core is positioned below and in front of the blower. Preferably the air-conditioning unit is of a crushable structure wherein, in the event of a vehicle collision, a wall of the main cover behind the evaporator is broken, or component parts housed within the main cover are moved, to thereby absorb the impact energy.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: December 7, 2010
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Tatsuhide Kawahara, Soichiro Fujita
  • Publication number: 20050189100
    Abstract: Sharp bends in a defrost duct extending from a defrost outlet to a windshield, and in a face duct extending from a face outlet to both sides of a front passenger seat, are eliminated and the duct resistance of these ducts is reduced. Moreover collision safety of a passenger is improved, and an interior space of a vehicle is expanded forward. In an air-conditioning unit to be positioned to the front with respect to a front seat of a vehicle, an evaporator is positioned below and behind a blower, and a heater core is positioned below and in front of the blower. Preferably the air-conditioning unit is of a crushable structure wherein, in the event of a vehicle collision, a wall of the main cover behind the evaporator is broken, or component parts housed within the main cover are moved, to thereby absorb the impact energy.
    Type: Application
    Filed: December 7, 2004
    Publication date: September 1, 2005
    Inventors: Tatsuhide Kawahara, Soichiro Fujita