Patents by Inventor Minoru Suto
Minoru Suto 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: 20230184472Abstract: A refrigeration circuit includes: a gas-liquid separator into which a gas-liquid two-phase refrigerant flowed out from a condenser flows, the gas-liquid separator being configured to separate the gas-liquid two-phase refrigerant into a vapor phase refrigerant and a liquid phase refrigerant; and a plate heat exchanger including a first heat exchanging part and a second heat exchanging part, the first heat exchanging part being a part where the vapor phase refrigerant flowed out from the gas-liquid separator and the liquid phase refrigerant flowed out from the gas-liquid separator exchange heat, the second heat exchanging part being a part where the vapor phase refrigerant flowed out from the first heat exchanging part and a returning refrigerant flowed out from an evaporator exchange heat.Type: ApplicationFiled: February 13, 2023Publication date: June 15, 2023Inventors: Takashi TOYOOKA, Minoru SUTO
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Publication number: 20230093643Abstract: Provided is a binary refrigeration apparatus including: a low-temperature side refrigeration circuit including a spiral heat exchanger including a main tube and a spiral tube wound around the main tube in a spiral form, the main tube being a tube where a low-temperature side refrigerant that flows into a low-temperature side compressor enters, the spiral tube being a tube where the low-temperature side refrigerant flown out from the low-temperature side compressor enters; and a high-temperature side refrigeration circuit where a high-temperature side refrigerant that exchanges heat with the low-temperature side refrigerant through a plate heat exchanger circulates.Type: ApplicationFiled: November 30, 2022Publication date: March 23, 2023Inventors: Takashi TOYOOKA, Minoru Suto
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Publication number: 20220146185Abstract: This refrigeration apparatus comprises: an inner box having a top surface and side surfaces; and an evaporator constituted by bent pipes comprising a top surface portion in contact with the top surface, an upper side-surface portion in contact with the side surfaces, and a lower side-surface portion in contact with the side surfaces below the upper-side surface portion. The pipes constituting the upper side-surface portion are more densely arranged than the pipes constituting the lower side-surface portion. The total length of the pipes constituting the top surface portion and the upper side-surface portion is 62.5% or more of the lengths of the pipes in contact with the inner box.Type: ApplicationFiled: January 20, 2022Publication date: May 12, 2022Inventors: Takashi TOYOOKA, Minoru SUTO, Fumihiro ASAYAMA
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Publication number: 20220136752Abstract: This refrigeration device comprises: a high temperature side refrigerant circuit in which a high temperature side refrigerant circulates; a low temperature side refrigerant circuit in which a low temperature side refrigerant circulates; and a cascade heat exchanger that cools the low temperature side refrigerant with the high temperature side refrigerant. In the low temperature side refrigerant circuit, a low temperature side decompressor is disposed downstream of the cascade heat exchanger and a temperature sensor is installed in a piping portion between the cascade heat exchanger and the low temperature side decompressor.Type: ApplicationFiled: January 14, 2022Publication date: May 5, 2022Inventors: Takashi TOYOOKA, Minoru SUTO
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Patent number: 10760825Abstract: A refrigeration device equipped with: a cascade cycle; a storage unit having a storage space for an object to be cooled by a second evaporator; an internal temperature sensor that detects the temperature of the storage space; a control unit that determines a second rotational speed of a second compressor on the basis of a target temperature for the storage space and the detection result from the internal temperature sensor, and that determines a first rotational speed for a first compressor having a prescribed correspondence relationship with the second rotational speed; and a first power supply unit and a second power supply unit that supply power respectively to the first compressor and the second compressor on the basis of the first rotational speed and the second rotational speed determined by the control unit.Type: GrantFiled: July 27, 2018Date of Patent: September 1, 2020Assignee: PHC HOLDINGS CORPORATIONInventors: Yuichi Tamaoki, Takahiro Inoue, Minoru Suto
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Publication number: 20180347863Abstract: A refrigeration device equipped with: a cascade cycle; a storage unit having a storage space for an object to be cooled by a second evaporator; an internal temperature sensor that detects the temperature of the storage space; a control unit that determines a second rotational speed of a second compressor on the basis of a target temperature for the storage space and the detection result from the internal temperature sensor, and that determines a first rotational speed for a first compressor having a prescribed correspondence relationship with the second rotational speed; and a first power supply unit and a second power supply unit that supply power respectively to the first compressor and the second compressor on the basis of the first rotational speed and the second rotational speed determined by the control unit.Type: ApplicationFiled: July 27, 2018Publication date: December 6, 2018Inventors: Yuichi TAMAOKI, Takahiro INOUE, Minoru SUTO
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Patent number: 7624586Abstract: An object is to provide a freezing device in which a safely-treatable incombustible mixed refrigerant can be used and which can realize an extremely low temperature of ?85° C. or less in chamber by a simple structure. The freezing device comprises a single refrigerant circuit in which the refrigerant discharged from a compressor is condensed and thereafter evaporated to exert a cooling function and which allows heat exchange between the evaporated refrigerant and the condensed refrigerant, wherein there is introduced into the refrigerant circuit a non-azeotropic mixed refrigerant containing R245fa, R600, R23 and R14; a non-azeotropic mixed refrigerant containing R245fa, R600, R116 and R14; a non-azeotropic mixed refrigerant containing R245fa, R600, R508A and R14; or a non-azeotropic mixed refrigerant containing R245fa, R600, R508B and R14.Type: GrantFiled: October 16, 2006Date of Patent: December 1, 2009Assignee: Sanyo Electric Co., Ltd.Inventors: Jiro Yuzawa, Fukuji Yoshida, Susumu Kobayashi, Minoru Suto
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Publication number: 20070084224Abstract: An object is to provide a freezing device in which a safely-treatable incombustible mixed refrigerant can be used and which can realize an extremely low temperature of ?85° C. or less in chamber by a simple structure. The freezing device comprises a single refrigerant circuit in which the refrigerant discharged from a compressor is condensed and thereafter evaporated to exert a cooling function and which allows heat exchange between the evaporated refrigerant and the condensed refrigerant, wherein there is introduced into the refrigerant circuit a non-azeotropic mixed refrigerant containing R245fa, R600, R23 and R14; a non-azeotropic mixed refrigerant containing R245fa, R600, R116 and R14; a non-azeotropic mixed refrigerant containing R245fa, R600, R508A and R14; or a non-azeotropic mixed refrigerant containing R245fa, R600, R508B and R14.Type: ApplicationFiled: October 16, 2006Publication date: April 19, 2007Applicant: SANYO ELECTRIC CO., LTD.Inventors: Jiro Yuzawa, Fukuji Yoshida, Susumu Kobayashi, Minoru Suto
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Publication number: 20040123622Abstract: There are provided a compact and portable refrigerant recovery device which can easily recover a refrigerant present in a refrigeration circuit of a used-up household refrigerator or an extra-low temperature freezer which uses a low boiling point refrigerant at low costs, and a method for recovering a refrigerant by using the refrigerant recovery device. In the refrigerant recovery device comprising a refrigerant recovery tank which stores an activated carbon for adsorbing the refrigerant, the recovery tank is equipped with a detachable cap, and the activated carbon is wrapped in unwoven cloth finer than a grain diameter of the activated carbon, and stored in the recovery tank. The refrigerant recovery device is connected to the refrigeration circuit, a gas in the refrigerant recovery tank is vacuumed to be discharged before the refrigerant of the refrigeration circuit is recovered, and then the refrigerant is adsorbed on the activated carbon to be recovered.Type: ApplicationFiled: September 15, 2003Publication date: July 1, 2004Applicants: Sanyo Electric Co., Ltd., Sanyo Electric Biomedical Co., Ltd.Inventors: Jiro Yuzawa, Fukuji Yoshida, Katsuhiko Inoue, Minoru Suto, Ryuzo Tobe, Katsuzi Takasugi