Patents by Inventor Yoshitaka Matsugi

Yoshitaka Matsugi 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
  • Patent number: 11268728
    Abstract: A ventilation system includes a plurality of ventilation devices, a sensor, a setting unit, and a transmitter-receiver. The sensor is attached to a predetermined ventilation device of the plurality of ventilation devices. The sensor detects a state of air. The setting unit sets, from the plurality of ventilation devices, a first ventilation device to which the sensor is to be attached, and a second ventilation device with which a detection signal of the sensor is to be shared. The transmitter-receiver receives the detection signal of the sensor and transmits the detection signal to control devices of the first and second ventilation devices. The first and second ventilation devices are set in the setting unit. Each of the control devices of the first and second ventilation devices controls an associated one of the ventilation devices based on the detection signal transmitted from the transmitter-receiver.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: March 8, 2022
    Assignee: Daikin Industries, Ltd.
    Inventors: Yoshitaka Matsugi, Tooru Fujimoto, Ryou Fujimoto, Kazuhiro Shioyama
  • Publication number: 20220003446
    Abstract: A ventilation system includes a first ventilation device, a second ventilation device, a sensor, and an electronic controller. The first ventilation device includes a first fan. The second ventilation device includes a second fan. The sensor is attached to the first ventilation device. The sensor is configured to detect a state of air and to transmit a detection signal indicative of the detected state of air. The electronic controller is configured to receive the detection signal of the sensor and to control the first ventilation device and the second ventilation device based on the detection signal.
    Type: Application
    Filed: September 21, 2021
    Publication date: January 6, 2022
    Inventors: Yoshitaka MATSUGI, Tooru FUJIMOTO, Ryou FUJIMOTO, Kazuhiro SHIOYAMA
  • Patent number: 11156377
    Abstract: A ventilation system includes a plurality of ventilation devices, a sensor, a setting unit, and a transmitter-receiver. The sensor is attached to a predetermined ventilation device of the plurality of ventilation devices. The sensor detects a state of air. The setting unit sets, from the plurality of ventilation devices, a first ventilation device to which the sensor is to be attached, and a second ventilation device with which a detection signal of the sensor is to be shared. The transmitter-receiver receives the detection signal of the sensor and transmits the detection signal to control devices of the first and second ventilation devices. The first and second ventilation devices are set in the setting unit. Each of the control devices of the first and second ventilation devices controls an associated one of the ventilation devices based on the detection signal transmitted from the transmitter-receiver.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: October 26, 2021
    Assignee: Daikin Industries, Ltd.
    Inventors: Yoshitaka Matsugi, Tooru Fujimoto, Ryou Fujimoto, Kazuhiro Shioyama
  • Publication number: 20210140723
    Abstract: A total heat exchange element includes a plurality of partition members made of a material that contains cellulose as a main component, a spacing member made of a material that contains cellulose as a main component, and an adhesive portion bonding the partition members and the spacing member together. The partition members are configured as flat sheets, and are stacked with a predetermined distance between them. The spacing member is disposed between adjacent ones of the stacked partition members to maintain the distance between them. The total heat exchange element has a first air flow path and a second air flow path alternately formed with one of the partition members interposed between the first and second air flow paths. The adhesive portion contains, as an adhesive component, cellulose having a smaller diameter than both of the cellulose forming the partition members and the cellulose forming the spacing member.
    Type: Application
    Filed: January 19, 2021
    Publication date: May 13, 2021
    Inventor: Yoshitaka MATSUGI
  • Publication number: 20210088248
    Abstract: A ventilation system includes a plurality of ventilation devices, a sensor, a setting unit, and a transmitter-receiver. The sensor is attached to a predetermined ventilation device of the plurality of ventilation devices. The sensor detects a state of air. The setting unit sets, from the plurality of ventilation devices, a first ventilation device to which the sensor is to be attached, and a second ventilation device with which a detection signal of the sensor is to be shared. The transmitter-receiver receives the detection signal of the sensor and transmits the detection signal to control devices of the first and second ventilation devices. The first and second ventilation devices are set in the setting unit. Each of the control devices of the first and second ventilation devices controls an associated one of the ventilation devices based on the detection signal transmitted from the transmitter-receiver.
    Type: Application
    Filed: December 10, 2020
    Publication date: March 25, 2021
    Inventors: Yoshitaka MATSUGI, Tooru FUJIMOTO, Ryou FUJIMOTO, Kazuhiro SHIOYAMA
  • Patent number: 9797620
    Abstract: A total heat exchanger exchanges heat between air flowing through an air supply passage and air flowing through an air exhaust passage. An air supply fan transfers air from the outside of a room into the room through the air supply passage. If the temperature of outdoor air (OA) is below a lower temperature threshold (Tth), a controller intermittently stops the air supply fan in response to an index of the moisture content in room air (RA) such that as the stage of the index of the moisture content depending on the moisture content in the room air (RA) shifts toward higher stages, the period of time during which the air supply fan is at rest in an intermittent operating cycle increases.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: October 24, 2017
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Yoshitaka Matsugi, Kenichi Maegaito, Takayuki Sunayama, Tooru Fujimoto
  • Publication number: 20170159963
    Abstract: A total heat exchanger exchanges heat between air flowing through an air supply passage and air flowing through an air exhaust passage. An air supply fan transfers air from the outside of a room into the room through the air supply passage. If the temperature of outdoor air (OA) is below a lower temperature threshold (Tth), a controller intermittently stops the air supply fan in response to an index of the moisture content in room air (RA) such that as the stage of the index of the moisture content depending on the moisture content in the room air (RA) shifts toward higher stages, the period of time during which the air supply fan is at rest in an intermittent operating cycle increases.
    Type: Application
    Filed: January 28, 2015
    Publication date: June 8, 2017
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Yoshitaka MATSUGI, Kenichi MAEGAITO, Takayuki SUNAYAMA, Tooru FUJIMOTO
  • Patent number: 9372007
    Abstract: When the air conditioner implements the temperature controlling operation, the ventilator performs ventilation in a normal ventilation mode where a ventilation amount is set at a certain ventilation amount or more. When the air conditioner implements the operation not intended for temperature control, the ventilator performs ventilation in a ventilation suppressed mode where the number of rotations of an exhaust fan is made greater than that of an air supply fan to place indoor space in a negative pressure and ventilation is performed at an amount smaller than the certain ventilation amount or ventilation is stopped. In the ventilation suppressed mode, a ventilation amount is set to be smaller in response to a greater heating load that is increased by ventilation performed during the operation not intended for temperature control.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: June 21, 2016
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventor: Yoshitaka Matsugi
  • Publication number: 20150316276
    Abstract: When the air conditioner implements the temperature controlling operation, the ventilator performs ventilation in a normal ventilation mode where a ventilation amount is set at a certain ventilation amount or more. When the air conditioner implements the operation not intended for temperature control, the ventilator performs ventilation in a ventilation suppressed mode where the number of rotations of an exhaust fan is made greater than that of an air supply fan to place indoor space in a negative pressure and ventilation is performed at an amount smaller than the certain ventilation amount or ventilation is stopped. In the ventilation suppressed mode, a ventilation amount is set to be smaller in response to a greater heating load that is increased by ventilation performed during the operation not intended for temperature control.
    Type: Application
    Filed: December 18, 2013
    Publication date: November 5, 2015
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventor: Yoshitaka MATSUGI
  • Patent number: 8899309
    Abstract: A first element and a second element are disposed in postures such that the length directions of the elements are parallel to each other. The first element is disposed in a posture such that a pair of opposing surfaces where a longitudinal flow passage is open is parallel to one main plate. The second element is disposed in a posture such that a pair of opposing surfaces where a longitudinal flow passage is open is parallel to the one main plate. A mixing flow passage formed as a result of the first element and the second element being disposed with a gap therebetween in a facing direction of side plates is provided between a transverse flow passage of the first element and a transverse flow passage of the second element.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: December 2, 2014
    Assignee: Daikin Industries, Ltd.
    Inventors: Tsuyoshi Yamaguchi, Kenichi Maegaito, Yoshitaka Matsugi
  • Publication number: 20130281001
    Abstract: A first element and a second element are disposed in postures such that the length directions of the elements are parallel to each other. The first element is disposed in a posture such that a pair of opposing surfaces where a longitudinal flow passage is open is parallel to one main plate. The second element is disposed in a posture such that a pair of opposing surfaces where a longitudinal flow passage is open is parallel to the one main plate. A mixing flow passage formed as a result of the first element and the second element being disposed with a gap therebetween in a facing direction of side plates is provided between a transverse flow passage of the first element and a transverse flow passage of the second element.
    Type: Application
    Filed: December 19, 2011
    Publication date: October 24, 2013
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tsuyoshi Yamaguchi, Kenichi Maegaito, Yoshitaka Matsugi
  • Publication number: 20110111689
    Abstract: A total heat exchanger unit includes a controller for, upon receipt of a stop signal for stopping optional ventilation operation, terminating the optional ventilation operation and starting forced ventilation operation, and upon receipt of a start signal for starting the optional ventilation operation, terminating the forced ventilation operation and starting the optional ventilation operation. The controller allows intermittent operation of an air supply fan and an exhaust fan during the forced ventilation operation.
    Type: Application
    Filed: June 18, 2009
    Publication date: May 12, 2011
    Inventors: Nobumasa Takeuchi, Takashi Takahashi, Yoshitaka Matsugi
  • Publication number: 20100191379
    Abstract: A ventilating apparatus includes a blow fan, a filter arranged to collect dust contained in air flow generated by the blower fan, and a control unit configured to use a time input value, which is for outputting a filter sign, to increase a target rotational speed of the blower fan with a prescribed frequency.
    Type: Application
    Filed: June 19, 2008
    Publication date: July 29, 2010
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Nobumasa Takeuchi, Yoshitaka Matsugi
  • Patent number: 7441588
    Abstract: The present invention provides a heat exchanger unit that can save space, even when performing air conditioning in addition to ventilation. The heat exchanger unit performs heat exchange ventilation with a supply air channel flowing from an outdoor space to an indoor space and an exhaust air channel flowing from the indoor space to the outdoor space and includes an optical deodorization portion and a first blowing portion. The optical deodorization portion is provided so as to be linked to at least the indoor space and performs air conditioning with a circulation channel. The circulation channel is provided in the vicinity of either the supply air channel or the exhaust air channel. The first blowing portion includes a double-suction first impeller having a first suction inlet and a second suction inlet. Here, one of the supply air channel and the exhaust air channel that is provided in the vicinity of the circulation channel is provided at the first suction inlet side of the first impeller.
    Type: Grant
    Filed: January 19, 2004
    Date of Patent: October 28, 2008
    Assignee: Daikin Industries, Ltd.
    Inventors: Yoshitaka Matsugi, Akira Fujimoto
  • Publication number: 20050167077
    Abstract: The present invention provides a heat exchanger unit that can save space, even when performing air conditioning in addition to ventilation. The heat exchanger unit performs heat exchange ventilation with a supply air channel flowing from an outdoor space to an indoor space and an exhaust air channel flowing from the indoor space to the outdoor space and includes an optical deodorization portion and a first blowing portion. The optical deodorization portion is provided so as to be linked to at least the indoor space and performs air conditioning with a circulation channel. The circulation channel is provided in the vicinity of either the supply air channel or the exhaust air channel. The first blowing portion includes a double-suction first impeller having a first suction inlet and a second suction inlet. Here, one of the supply air channel and the exhaust air channel that is provided in the vicinity of the circulation channel is provided at the first suction inlet side of the first impeller.
    Type: Application
    Filed: January 19, 2004
    Publication date: August 4, 2005
    Applicant: Daikin Industries Ltd
    Inventors: Yoshitaka Matsugi, Akira Fujimoto