Patents by Inventor Tetsuya KOZAI

Tetsuya KOZAI 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).

  • Publication number: 20210278100
    Abstract: Provided is an air-cooling/heating switching type air-conditioning system which includes multiple indoor units, and includes: a receiving section configured to receive information regarding an operation state of air-cooling or air-heating from one indoor unit of the multiple indoor units; a switching section configured to switch the operation state of the air-cooling or the air-heating according to the received information; a control section configured to make such control that operation is performed in cooperation with the one indoor unit in a case where the operation state is switched; and a transmission section configured not to transmit, in the case where the operation state is switched, information on the operation state to other operating indoor units of the multiple indoor units and to transmit an operation instruction to equipment placed in spaces identical to those of the other indoor units to adjust temperatures.
    Type: Application
    Filed: May 26, 2021
    Publication date: September 9, 2021
    Inventors: Atsuhiko FUKASAWA, Takanori ISOGAWA, Tetsuya KOZAI, Fumihiro KATO, Aya KINOSHITA
  • Patent number: 11015834
    Abstract: An air conditioning system provided which has: an outdoor device including at least a compressor and a first heat exchanger; an air handling device including an air supply fan and a second heat exchanger; an expansion valve; and a control section, wherein the compressor, the first heat exchanger, the expansion valve, and the second heat exchanger are sequentially connected in an annular shape to form a refrigerant circuit in which refrigerant circulates, and the control section adjusts a rotation speed of the air supply fan and/or a degree of opening of the expansion valve based on information including a temperature detection value of refrigerant on each of one end side and the other end side of the second heat exchanger, a temperature detection value of air toward the second heat exchanger, and a temperature detection value of air heat-exchanged by the second heat exchanger.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: May 25, 2021
    Assignee: HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC.
    Inventors: Yuma Kageyama, Tetsuya Kozai, Yuki Uchino
  • Publication number: 20190186777
    Abstract: An air conditioning system provided which has: an outdoor device including at least a compressor and a first heat exchanger; an air handling device including an air supply fan and a second heat exchanger; an expansion valve; and a control section, wherein the compressor, the first heat exchanger, the expansion valve, and the second heat exchanger are sequentially connected in an annular shape to form a refrigerant circuit in which refrigerant circulates, and the control section adjusts a rotation speed of the air supply fan and/or a degree of opening of the expansion valve based on information including a temperature detection value of refrigerant on each of one end side and the other end side of the second heat exchanger, a temperature detection value of air toward the second heat exchanger, and a temperature detection value of air heat-exchanged by the second heat exchanger.
    Type: Application
    Filed: February 19, 2019
    Publication date: June 20, 2019
    Inventors: Yuma KAGEYAMA, Tetsuya KOZAI, Yuki UCHINO
  • Patent number: 10116126
    Abstract: An outdoor unit of an air conditioner is provided that improves work efficiency at the time of installation and maintenance of the outdoor unit and prevents a cover for covering an opening from being unintentionally left open. The outdoor unit of the air conditioner includes an electrical box, a housing that covers the electrical box to form an contour, an electrical box cover member that covers components inside the electrical box, a housing cover that covers the electrical box cover member from outside, wherein the electrical box cover member has a work opening and has an opening cover that covers the work opening mounted thereon, and in which the housing cover abuts on the opening cover in a state of the opening cover being open.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: October 30, 2018
    Assignee: Hitachi-Johnson Controls Air Conditioning, Inc.
    Inventors: Fumihiro Kato, Atsuhiko Fukasawa, Tetsuya Kozai, Yuta Oikawa
  • Publication number: 20180269669
    Abstract: An outdoor unit of an air conditioner is provided that improves work efficiency at the time of installation and maintenance of the outdoor unit and prevents a cover for covering an opening from being unintentionally left open. The outdoor unit of the air conditioner includes an electrical box, a housing that covers the electrical box to form an contour, an electrical box cover member that covers components inside the electrical box, a housing cover that covers the electrical box cover member from outside, wherein the electrical box cover member has a work opening and has an opening cover that covers the work opening mounted thereon, and in which the housing cover abuts on the opening cover in a state of the opening cover being open.
    Type: Application
    Filed: March 13, 2018
    Publication date: September 20, 2018
    Inventors: Fumihiro KATO, Atsuhiko FUKASAWA, Tetsuya KOZAI, Yuta OIKAWA