Patents by Inventor Kazushi Hisayama

Kazushi Hisayama 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: 20230024725
    Abstract: An intermediate plate is supported by a bottom member through a plurality of second elastic members. A first compressor is supported by the intermediate plate through a plurality of first elastic members. A second compressor is supported by the same intermediate plate through a plurality of first elastic members.
    Type: Application
    Filed: September 29, 2022
    Publication date: January 26, 2023
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Masao OHNO, Tetsuya OKAMOTO, Kazushi HISAYAMA, Kebi CHEN, Yoshinobu TSUMURA, Masanori UKIBUNE
  • Publication number: 20230014957
    Abstract: A refrigeration apparatus includes a refrigerant circuit switchable between a first operation of performing a refrigeration cycle in which a first compressor is stopped and a second compressor is driven and a second operation of performing a refrigeration cycle in which the first and second compressors and are driven. The refrigeration apparatus further includes a reduction mechanism configured to reduce a refrigerant flowing into the first compressor while a first condition is satisfied during the first operation. The first condition indicates that an internal pressure of the first compressor is lower than an evaporation pressure of an evaporator.
    Type: Application
    Filed: September 29, 2022
    Publication date: January 19, 2023
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kazushi HISAYAMA, Masanori UKIBUNE, Tetsuya OKAMOTO, Masao OHNO, Kebi CHEN
  • Publication number: 20230020042
    Abstract: A first intermediate plate and a second intermediate plate are supported by a bottom member through a plurality of second elastic members. The first compressor and the second compressor are supported by the first intermediate plate and the second intermediate plate, respectively, through a plurality of first elastic members.
    Type: Application
    Filed: September 30, 2022
    Publication date: January 19, 2023
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Masao OHNO, Tetsuya OKAMOTO, Kazushi HISAYAMA, Kebi CHEN, Yoshinobu TSUMURA, Masanori UKIBUNE
  • Patent number: 11313567
    Abstract: A refrigeration cycle apparatus has a compressor disposed via a bottom member of a housing, a second elastic member, a base, and a first elastic member. A first electric component that drives a motor for the compressor and a second electric component that performs another control are fixed to the base and disposed. The base has an upper surface that contacts the first elastic member and a lower surface that contacts the second elastic member. The first electric component and the second electric component are fixed to the upper surface directly or indirectly via a substrate and/or an electric-component casing. Top portions of the first electric component and the second electric component are lower than a top portion of the compressor.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: April 26, 2022
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Kazushi Hisayama, Tetsuya Okamoto, Yoshinobu Tsumura, Kebi Chen, Masanori Ukibune
  • Publication number: 20220011020
    Abstract: A refrigerant circuit includes a first compressor, a second compressor, a heat-source-side heat exchanger, an expansion mechanism, and a use-side heat exchanger. The refrigerant circuit is capable of performing a single-stage compression operation in which one of the first compressor and the second compressor is driven and the other is stopped, and a two-stage compression operation in which both the first compressor and the second compressor are driven. The control unit controls the refrigerant circuit so that, of the single-stage compression operation and the two-stage compression operation, an operation with a higher compression efficiency is performed.
    Type: Application
    Filed: September 24, 2021
    Publication date: January 13, 2022
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kazushi HISAYAMA, Kebi CHEN, Tetsuya OKAMOTO
  • Patent number: 11073325
    Abstract: A refrigeration cycle apparatus has a compressor disposed via a bottom member of a housing, second elastic members, a base, and first elastic members. The compressor is disposed close to an arrangement centroid of the second elastic members.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: July 27, 2021
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Kazushi Hisayama, Tetsuya Okamoto, Yoshinobu Tsumura, Kebi Chen, Masanori Ukibune
  • Patent number: 11035579
    Abstract: A refrigeration cycle apparatus includes a compressor, a refrigerant cooling pipe, a refrigerant-cycle constituent component, a connecting pipe and vibration transmission suppressing portion that is disposed on the connecting pipe that connects the refrigeration-cycle constituent component or the compressor and the refrigerant cooling pipe to each other.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: June 15, 2021
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Kazushi Hisayama, Tetsuya Okamoto, Yoshinobu Tsumura, Kebi Chen, Masanori Ukibune
  • Publication number: 20210025643
    Abstract: A refrigeration cycle apparatus has a compressor disposed via a bottom member of a housing, second elastic members, a base, and first elastic members. The compressor is disposed close to an arrangement centroid of the second elastic members.
    Type: Application
    Filed: March 25, 2019
    Publication date: January 28, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kazushi HISAYAMA, Tetsuya OKAMOTO, Yoshinobu TSUMURA, Kebi CHEN, Masanori UKIBUNE
  • Publication number: 20210018189
    Abstract: A refrigeration cycle apparatus includes a compressor, a refrigerant cooling pipe, a refrigerant-cycle constituent component, a connecting pipe and vibration transmission suppressing portion that is disposed on the connecting pipe that connects the refrigeration-cycle constituent component or the compressor and the refrigerant cooling pipe to each other.
    Type: Application
    Filed: March 28, 2019
    Publication date: January 21, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kazushi HISAYAMA, Tetsuya OKAMOTO, Yoshinobu TSUMURA, Kebi CHEN, Masanori UKIBUNE
  • Publication number: 20210018188
    Abstract: A refrigeration cycle apparatus has a compressor disposed via a bottom member of a housing, a second elastic member, a base, and a first elastic member. A first electric component that drives a motor for the compressor and a second electric component that performs another control are fixed to the base and disposed. The base has an upper surface that contacts the first elastic member and a lower surface that contacts the second elastic member. The first electric component and the second electric component are fixed to the upper surface directly or indirectly via a substrate and/or an electric-component casing. Top portions of the first electric component and the second electric component are lower than a top portion of the compressor.
    Type: Application
    Filed: March 22, 2019
    Publication date: January 21, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kazushi HISAYAMA, Tetsuya OKAMOTO, Yoshinobu TSUMURA, Kebi CHEN, Masanori UKIBUNE
  • Patent number: 9178412
    Abstract: A bidirectional switch circuit includes two switching elements connected to conduct a current in both directions. The two switching elements are connected in series to each other. Of the two switching elements, the switching element to which a reverse voltage is applied, a voltage of a source of one of the switching elements being higher than a voltage of a drain of the one, is configured to conduct a current from the source to the drain even when an on-drive signal is not being input to a gate terminal of the one.
    Type: Grant
    Filed: January 18, 2010
    Date of Patent: November 3, 2015
    Assignee: Daikin Industries, Ltd.
    Inventors: Reiji Kawashima, Kazushi Hisayama, Hiroshi Hibino, Morimitsu Sekimoto, Toshiyuki Maeda, Sumikazu Matsuno
  • Publication number: 20110026285
    Abstract: A bidirectional switch circuit includes two switching elements connected to conduct a current in both directions. The two switching elements are connected in series to each other. Of the two switching elements, the switching element to which a reverse voltage is applied, a voltage of a source of one of the switching elements being higher than a voltage of a drain of the one, is configured to conduct a current from the source to the drain even when an on-drive signal is not being input to a gate terminal of the one.
    Type: Application
    Filed: January 18, 2010
    Publication date: February 3, 2011
    Inventors: Reiji Kawashima, Kazushi Hisayama, Hiroshima Hibino, Morimitsu Sekimoto, Toshiyuki Maeda, Sumikazu Matsuno