Patents by Inventor Kousuke HIRAI

Kousuke HIRAI 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: 11384953
    Abstract: An air conditioning system includes: an air conditioner that generates conditioned air by heat exchange with a refrigerant and supplies the conditioned air to an air conditioning target space; a refrigerant sensor that detects refrigerant leakage; a ventilator that ventilates the air conditioning target space; and a controller. The ventilator includes: a total heat exchanger; a first air supply path and a first air exhaust path that connect the air conditioning target space and an outside of the air conditioning target space via the total heat exchanger; a second air supply path that connect the air conditioning target space and the outside of the air conditioning target space without passing through the total heat exchanger; an air supply fan that supplies air from the outside of the air conditioning target space into the air conditioning target space via the first air supply path and the second air supply path.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: July 12, 2022
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Kousuke Hirai, Tooru Fujimoto, Akiyoshi Yamamoto, Gakuto Sakai, Yoshitaka Matsugi
  • Publication number: 20220214062
    Abstract: An air conditioning and ventilating system including: an air conditioning device including a heat exchanger configured to generate conditioned air by heat exchange with a refrigerant; a ventilation device communicatively connected to the air conditioning device and including a supply air fan and/or an exhaust fan; an airflow volume detection unit configured to detect an airflow volume equivalent value of the ventilation device; and a control unit. On determination that the airflow volume equivalent value acquired from the airflow volume detection unit is equal to or less than a first predetermined value, the control unit sets an operation of the air conditioning device to a stop state.
    Type: Application
    Filed: March 22, 2022
    Publication date: July 7, 2022
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kousuke HIRAI, Akiyoshi YAMAMOTO, Gakuto SAKAI, Tooru FUJIMOTO, Yoshitaka MATSUGI
  • Publication number: 20220186960
    Abstract: An air conditioning and ventilating system S including: an air conditioning device A including a heat exchanger 22 configured to generate conditioned air by heat exchange with a refrigerant, and configured to send the conditioned air to an air conditioned space R; a ventilation device 30 configured to ventilate the air conditioned space R; a refrigerant sensor 24 configured to detect concentration of the refrigerant in the air conditioned space R; and a control unit 40 configured to control operations of the air conditioning device A and the ventilation device 30. On determination that the refrigerant concentration acquired from the refrigerant sensor 24 exceeds a first predetermined value, the control unit 40 sets an operation of a compressor 13 of the air conditioning device A to a stop state and sets the ventilation device 30 to an operating state.
    Type: Application
    Filed: March 7, 2022
    Publication date: June 16, 2022
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kousuke HIRAI, Akiyoshi YAMAMOTO, Gakuto SAKAI, Yoshitaka MATSUGI, Tooru FUJIMOTO
  • Publication number: 20220146138
    Abstract: An air conditioning system includes: an air conditioner that generates conditioned air by heat exchange with a refrigerant and supplies the conditioned air to an air conditioning target space; a refrigerant sensor that detects refrigerant leakage; a ventilator that ventilates the air conditioning target space; and a controller. The ventilator includes: a total heat exchanger; a first air supply path and a first air exhaust path that connect the air conditioning target space and an outside of the air conditioning target space via the total heat exchanger; a second air supply path that connect the air conditioning target space and the outside of the air conditioning target space without passing through the total heat exchanger; an air supply fan that supplies air from the outside of the air conditioning target space into the air conditioning target space via the first air supply path and the second air supply path.
    Type: Application
    Filed: April 24, 2020
    Publication date: May 12, 2022
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kousuke Hirai, Tooru Fujimoto, Akiyoshi Yamamoto, Gakuto Sakai, Yoshitaka Matsugi
  • Publication number: 20210404679
    Abstract: In a system where a plurality of ventilation devices (10) are provided in one room, a control device (5) is provided to control, for the ventilation devices (10) operating, the number of the ventilation devices so that the detected values of the carbon dioxide sensors (13) are lower than the reference value.
    Type: Application
    Filed: November 15, 2017
    Publication date: December 30, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kousuke HIRAI, Gakuto SAKAI, Kenta KOBAYASHI
  • Publication number: 20210088240
    Abstract: Internal control devices (41A to 41D) included respectively in air conditioners (10A to 10D) in an air conditioning system (1) are communicably connected one by one correspondingly to external control devices (42A to 42D). Each of the external control devices (42A to 42D) is configured to execute command generating operation of generating an operation command to a corresponding one of the air conditioners (10A to 10D). The external control devices (42A to 42D) constitute an external control system (50). In the external control system (50), one of the external control devices (42A) functions as a master control device configured to execute the command generating operation whereas remaining ones of the external control devices (42A to 42D) other than the external control device (42A) functioning as the master control device function as sub control devices configured not to execute the command generating operation.
    Type: Application
    Filed: December 3, 2020
    Publication date: March 25, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Shougo OHTA, Masaya NISHIMURA, Kousuke HIRAI, Takayuki SUNAYAMA
  • Publication number: 20200232665
    Abstract: A controlling unit controls a refrigerant circuit and a flow path switching mechanism to perform a first humidity control operation or a second humidity control operation. In the first humidity control operation, a bypass passage is closed, and outside air is supplied into a room through one of first and second adsorption heat exchangers, and room air is exhausted to outside through the other of the first and second adsorption heat exchangers. In the second humidity control operation, the bypass passage is opened, and the outside air is supplied into the room through one of the first and second adsorption heat exchangers and the bypass passage, and room air is exhausted to outside through the other of the first and second adsorption heat exchangers.
    Type: Application
    Filed: May 31, 2017
    Publication date: July 23, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kousuke HIRAI, Gakuto SAKAI