Patents by Inventor Atsushi OZATO
Atsushi OZATO 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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Patent number: 11015855Abstract: A container refrigeration apparatus includes: a casing which forms an external storage space communicating with the exterior of the container and an internal storage space communicating with the interior of the container; a refrigerant circuit; an external fan; an internal fan; and an inside air control system including an exhaust passage which allows a space on a blowout side of the internal fan in the internal storage space to communicate with the external storage space, and controls composition of the inside air in the container. An external end of the exhaust passage is open on a suction side of the external fan in the external storage space.Type: GrantFiled: February 25, 2016Date of Patent: May 25, 2021Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Noritaka Kamei, Atsushi Ozato, Wataru Hirata
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Patent number: 10499660Abstract: A container refrigeration apparatus includes a CA system which controls the composition of the air in the container. The CA system includes a gas supply device which supplies nitrogen-enriched air, an intake duct which guides outside air to a first space on a suction side of an interior fan, and an exhaust duct which guides air in a second space on the blowout side of the interior fan out of a container. The exhaust duct has an inlet at a location where the flow of the air blown from the interior fan is blocked by a fan housing.Type: GrantFiled: August 28, 2015Date of Patent: December 10, 2019Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Noritaka Kamei, Kazuma Yokohara, Naohiro Tanaka, Atsushi Ozato
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Patent number: 10345014Abstract: Disclosed herein a technique for producing a gas mixture for controlling an oxygen concentration in the interior of a container while reducing the overall weight of the apparatus. For this purpose, a gas mixture supply device is provided for a container refrigeration apparatus. The gas mixture supply device is provided with adsorption columns. If one of the first and second adsorption columns is supplied with air, the adsorption columns are pressurized, and nitrogen in the air is adsorbed onto an adsorbent. If air is sucked from the other of the first and second adsorption columns, the adsorption columns are depressurized, and nitrogen adsorbed onto the adsorbent is desorbed. A gas mixture including the nitrogen desorbed from the adsorbent is supplied to the interior of a container.Type: GrantFiled: September 16, 2014Date of Patent: July 9, 2019Assignee: Daikin Industries, Ltd.Inventors: Naohiro Tanaka, Atsushi Ozato, Makoto Ikemiya, Tetsuya Ukon, Noritaka Kamei, Kazuma Yokohara
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Patent number: 10295243Abstract: A gas supply device is configured such that its supply state is switchable between a first supply state supplying, as supply air, nitrogen-enriched air produced from outside air into a containe, and a second supply state in which the gas supply device takes outside air therein and supplies, as supply air, the outside air into the container. A CA system is provided with a branch pipe which guides at least part of the supply air flowing through a supply passage to an oxygen sensor, and an open/close valve which opens/closes the branch pipe. An outside air calibration operation is performed in which the open/close valve is opened in the second supply state to guide the least part of the outside air flowing through the supply passage to the oxygen sensor, thereby calibrating the oxygen sensor using the outside air.Type: GrantFiled: January 15, 2016Date of Patent: May 21, 2019Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Kazuma Yokohara, Masataka Nakano, Noritaka Kamei, Naohiro Tanaka, Atsushi Ozato, Yuusuke Fujimoto
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Publication number: 20180245835Abstract: A container refrigeration apparatus includes: a casing which forms an external storage space communicating with the exterior of the container and an internal storage space communicating with the interior of the container; a refrigerant circuit; an external fan; an internal fan; and an inside air control system including an exhaust passage which allows a space on a blowout side of the internal fan in the internal storage space to communicate with the external storage space, and controls composition of the inside air in the container. An external end of the exhaust passage is open on a suction side of the external fan in the external storage space.Type: ApplicationFiled: February 25, 2016Publication date: August 30, 2018Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Noritaka KAMEI, Atsushi OZATO, Wataru HIRATA
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Patent number: 10034484Abstract: An oxygen concentration in the interior of a container is detected by an oxygen concentration detection sensor. If the oxygen concentration detected by the oxygen concentration detection sensor is higher than that of a gas mixture, the container is supplied with the gas mixture having an oxygen concentration lower than that of the outside air and higher than a target concentration. The oxygen concentration in the interior of the container is reduced to the vicinity of the oxygen concentration of the gas mixture by supplying the interior of the container with the gas mixture, and then is further reduced to the target concentration by respiration of plants. This appropriately controls the oxygen concentration in the interior of the container, and reduces a decrease in the degree of freshness of the plants.Type: GrantFiled: October 3, 2014Date of Patent: July 31, 2018Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Naohiro Tanaka, Atsushi Ozato, Makoto Ikemiya, Tetsuya Ukon
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Patent number: 9907316Abstract: Disclosed is a gas supply device provided for a container in which a breathing plant is housed. The device supplies nitrogen-enriched air into the container. The device is provided with a malfunction diagnosis section which checks whether each of components of the device works properly or not and specifies a malfunctioning portion if an oxygen concentration of the nitrogen-enriched air does not fall to or below a predetermined concentration. The malfunction diagnosis section checks whether each of an air pump, a motor, and a switching mechanism works properly or not, and determines that an adsorbent is not working properly when it is determined that all of the air pump, the motor, and the switching mechanism are working properly.Type: GrantFiled: February 4, 2016Date of Patent: March 6, 2018Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Kazuma Yokohara, Masataka Nakano, Noritaka Kamei, Naohiro Tanaka, Atsushi Ozato, Yuusuke Fujimoto
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Publication number: 20180038625Abstract: A gas supply device is configured such that its supply state is switchable between a first supply state supplying, as supply air, nitrogen-enriched air produced from outside air into a containe, and a second supply state in which the gas supply device takes outside air therein and supplies, as supply air, the outside air into the container. A CA system is provided with a branch pipe which guides at least part of the supply air flowing through a supply passage to an oxygen sensor, and an open/close valve which opens/closes the branch pipe. An outside air calibration operation is performed in which the open/close valve is opened in the second supply state to guide the least part of the outside air flowing through the supply passage to the oxygen sensor, thereby calibrating the oxygen sensor using the outside air.Type: ApplicationFiled: January 15, 2016Publication date: February 8, 2018Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Kazuma YOKOHARA, Masataka NAKANO, Noritaka KAMEI, Naohiro TANAKA, Atsushi OZATO, Yuusuke FUJIMOTO
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Publication number: 20180020687Abstract: Disclosed is a gas supply device provided for a container in which a breathing plant is housed. The device supplies nitrogen-enriched air into the container. The device is provided with a malfunction diagnosis section which checks whether each of components of the device works properly or not and specifies a malfunctioning portion if an oxygen concentration of the nitrogen-enriched air does not fall to or below a predetermined concentration. The malfunction diagnosis section checks whether each of an air pump, a motor, and a switching mechanism works properly or not, and determines that an adsorbent is not working properly when it is determined that all of the air pump, the motor, and the switching mechanism are working properly.Type: ApplicationFiled: February 4, 2016Publication date: January 25, 2018Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Kazuma YOKOHARA, Masataka NAKANO, Noritaka KAMEI, Naohiro TANAKA, Atsushi OZATO, Yuusuke FUJIMOTO
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Patent number: 9872508Abstract: Disclosed is a gas supply device provided for a container in which a breathing plant is housed. The device supplies nitrogen-enriched air into the container. The device is provided with a malfunction diagnosis section which checks whether each of components of the device works properly or not and specifies a malfunctioning portion if an oxygen concentration of the nitrogen-enriched air does not fall to or below a predetermined concentration. The malfunction diagnosis section checks whether each of an air pump, a motor, and a switching mechanism works properly or not, and determines that an adsorbent is not working properly when it is determined that all of the air pump, the motor, and the switching mechanism are working properly.Type: GrantFiled: February 4, 2016Date of Patent: January 23, 2018Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Kazuma Yokohara, Masataka Nakano, Noritaka Kamei, Naohiro Tanaka, Atsushi Ozato, Yuusuke Fujimoto
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Publication number: 20170251682Abstract: A container refrigeration apparatus includes a CA system which controls the composition of the air in the container. The CA system includes a gas supply device which supplies nitrogen-enriched air, an intake duct which guides outside air to a first space on a suction side of an interior fan, and an exhaust duct which guides air in a second space on the blowout side of the interior fan out of a container. The exhaust duct has an inlet at a location where the flow of the air blown from the interior fan is blocked by a fan housing.Type: ApplicationFiled: August 28, 2015Publication date: September 7, 2017Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Noritaka KAMEI, Kazuma YOKOHARA, Naohiro TANAKA, Atsushi OZATO
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Publication number: 20170254581Abstract: Disclosed herein is a container refrigeration apparatus including an exterior fan and a gas supply device. The gas supply device includes a unit case having a cooling air inlet port and a cooling air outlet port, and a pump mechanism housed in the unit case and configured to suck, and compress, outside air. The container refrigeration apparatus has an exhaust passage through which the unit case and a space on a suction side of the exterior fan are connected together such that the exterior fan sucks air through the cooling air outlet port out of the unit case. As a result, the problem of heat generated by the gas supply device including the pump mechanism may be solved at low cost.Type: ApplicationFiled: July 21, 2015Publication date: September 7, 2017Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Noritaka KAMEI, Kazuma YOKOHARA, Naohiro TANAKA, Atsushi OZATO
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Publication number: 20160245555Abstract: Disclosed herein a technique for producing a gas mixture for controlling an oxygen concentration in the interior of a container while reducing the overall weight of the apparatus. For this purpose, a gas mixture supply device is provided for a container refrigeration apparatus. The gas mixture supply device is provided with adsorption columns. If one of the first and second adsorption columns is supplied with air, the adsorption columns are pressurized, and nitrogen in the air is adsorbed onto an adsorbent. If air is sucked from the other of the first and second adsorption columns, the adsorption columns are depressurized, and nitrogen adsorbed onto the adsorbent is desorbed. A gas mixture including the nitrogen desorbed from the adsorbent is supplied to the interior of a container.Type: ApplicationFiled: September 16, 2014Publication date: August 25, 2016Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Naohiro TANAKA, Atsushi OZATO, Makoto IKEMIYA, Tetsuya UKON, Noritaka KAMEI, Kazuma YOKOHARA
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Publication number: 20160227802Abstract: An oxygen concentration in the interior of a container is detected by an oxygen concentration detection sensor. If the oxygen concentration detected by the oxygen concentration detection sensor is higher than that of a gas mixture, the container is supplied with the gas mixture having an oxygen concentration lower than that of the outside air and higher than a target concentration. The oxygen concentration in the interior of the container is reduced to the vicinity of the oxygen concentration of the gas mixture by supplying the interior of the container with the gas mixture, and then is further reduced to the target concentration by respiration of plants. This appropriately controls the oxygen concentration in the interior of the container, and reduces a decrease in the degree of freshness of the plants.Type: ApplicationFiled: October 3, 2014Publication date: August 11, 2016Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Naohiro TANAKA, Atsushi OZATO, Makoto IKEMIYA, Tetsuya UKON