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).
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Publication number: 20230024725Abstract: 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: ApplicationFiled: September 29, 2022Publication date: January 26, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Masao OHNO, Tetsuya OKAMOTO, Kazushi HISAYAMA, Kebi CHEN, Yoshinobu TSUMURA, Masanori UKIBUNE
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Publication number: 20230014957Abstract: 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: ApplicationFiled: September 29, 2022Publication date: January 19, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Kazushi HISAYAMA, Masanori UKIBUNE, Tetsuya OKAMOTO, Masao OHNO, Kebi CHEN
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Publication number: 20230020042Abstract: 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: ApplicationFiled: September 30, 2022Publication date: January 19, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Masao OHNO, Tetsuya OKAMOTO, Kazushi HISAYAMA, Kebi CHEN, Yoshinobu TSUMURA, Masanori UKIBUNE
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Patent number: 11313567Abstract: 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: GrantFiled: March 22, 2019Date of Patent: April 26, 2022Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Kazushi Hisayama, Tetsuya Okamoto, Yoshinobu Tsumura, Kebi Chen, Masanori Ukibune
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Publication number: 20220011020Abstract: 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: ApplicationFiled: September 24, 2021Publication date: January 13, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Kazushi HISAYAMA, Kebi CHEN, Tetsuya OKAMOTO
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Patent number: 11073325Abstract: 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: GrantFiled: March 25, 2019Date of Patent: July 27, 2021Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Kazushi Hisayama, Tetsuya Okamoto, Yoshinobu Tsumura, Kebi Chen, Masanori Ukibune
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Patent number: 11035579Abstract: 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: GrantFiled: March 28, 2019Date of Patent: June 15, 2021Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Kazushi Hisayama, Tetsuya Okamoto, Yoshinobu Tsumura, Kebi Chen, Masanori Ukibune
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Publication number: 20210025643Abstract: 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: ApplicationFiled: March 25, 2019Publication date: January 28, 2021Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Kazushi HISAYAMA, Tetsuya OKAMOTO, Yoshinobu TSUMURA, Kebi CHEN, Masanori UKIBUNE
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Publication number: 20210018189Abstract: 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: ApplicationFiled: March 28, 2019Publication date: January 21, 2021Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Kazushi HISAYAMA, Tetsuya OKAMOTO, Yoshinobu TSUMURA, Kebi CHEN, Masanori UKIBUNE
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Publication number: 20210018188Abstract: 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: ApplicationFiled: March 22, 2019Publication date: January 21, 2021Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Kazushi HISAYAMA, Tetsuya OKAMOTO, Yoshinobu TSUMURA, Kebi CHEN, Masanori UKIBUNE
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Patent number: 9178412Abstract: 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: GrantFiled: January 18, 2010Date of Patent: November 3, 2015Assignee: Daikin Industries, Ltd.Inventors: Reiji Kawashima, Kazushi Hisayama, Hiroshi Hibino, Morimitsu Sekimoto, Toshiyuki Maeda, Sumikazu Matsuno
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Publication number: 20110026285Abstract: 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: ApplicationFiled: January 18, 2010Publication date: February 3, 2011Inventors: Reiji Kawashima, Kazushi Hisayama, Hiroshima Hibino, Morimitsu Sekimoto, Toshiyuki Maeda, Sumikazu Matsuno