Patents by Inventor Kouji Tatsumi
Kouji Tatsumi 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: 11698203Abstract: In an air-conditioning system including an outside air processing device and an air-conditioning device, an operation of either one of the outside air processing device or the air-conditioning device is stopped if a temperature/humidity state that is at least either the temperature or humidity of air in a target space is within a predetermined range and if the load factor of at least one of the outside air processing device or the air-conditioning device is below a predetermined lower limit.Type: GrantFiled: October 13, 2021Date of Patent: July 11, 2023Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Yasunori Okamoto, Naotoshi Fujita, Kouji Tatsumi, Masaaki Kawagishi, Shinya Umase
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Patent number: 11614244Abstract: Provided is an air conditioning system that uses ducts to supply conditioned air to a plurality of places inside a building, and is configured to counteract air backflow that occurs in ducts. A heat exchanger unit (10) includes a use side heat exchanger (11). A plurality of ducts (20) are connected to the heat exchanger unit (10). A plurality of fan units (30) suction conditioned air from the heat exchanger unit (10), and supply the conditioned air to a plurality of air outlets (71) through the plurality of ducts (20). A differential pressure sensor (121) acting as a detection device detects air backflow proceeding from at least one air outlet (71) among the plurality of air outlets (71) toward the heat exchanger unit (10) in a plurality of distribution flow paths including the plurality of ducts (20), the plurality of fan units (30), and the air outlets (71) of a plurality of outlet units (70).Type: GrantFiled: April 15, 2020Date of Patent: March 28, 2023Assignee: Daikin Industries, Ltd.Inventors: Shuuichi Tanaka, Yoshiteru Nouchi, Kouji Tatsumi
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Publication number: 20230019149Abstract: An air conditioning system includes a plurality of first units each including a first fan configured to blow supply air into a target space. A second unit distributes the supply air to the plurality of first units through a duct. In the second unit, a heat exchanger subjects indoor air and outside air introduced by an outside air supply fan, to heat exchange. The second unit thus generates the supply air and sends the supply air to the duct. A controller controls at least the plurality of first fans so as to inhibit the supply air or the outside air from flowing out of an intake port, by setting a sum of airflow volumes from the plurality of first units to be equal to or more than an airflow volume from the outside air supply fan.Type: ApplicationFiled: September 29, 2022Publication date: January 19, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventor: Kouji TATSUMI
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Patent number: 11428422Abstract: When an outdoor air handler performs a heating humidifying operation and an air conditioner performs a cooling operation, a control device adjusts at least one of a to-be-supplied air temperature of the outdoor air handler, a to-be-supplied air flow rate of the outdoor air handler, a to-be-supplied water flow rate of the outdoor air handler, and a cooling temperature that is a temperature at an air heat exchanger of the air conditioner. The control device adjusts the to-be-supplied air temperature and the cooling temperature on the basis of dehumidification information, operation information, temperature information, and humidity information. The operation information is information regarding an operating state of the air conditioner.Type: GrantFiled: December 17, 2021Date of Patent: August 30, 2022Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Yasunori Okamoto, Naotoshi Fujita, Kouji Tatsumi, Masaaki Kawagishi, Shinya Umase
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Patent number: 11402118Abstract: It is an object of the present disclosure to collectively control an outdoor air handler and an air conditioner optimally. An air-conditioning system (100) includes an outdoor air handler (10) configured to adjust a temperature and a humidity of taken-in outdoor air and supply the air to a target space (SP1, SP2), an air conditioner (20) configured to adjust a temperature of air in the target space (SP1, SP2), and a control unit (30). The control unit (30) is configured to, in a case where one of the outdoor air handler (10) and the air conditioner (20) is in a non-temperature adjusting state in which the temperature of the air is not adjusted, change an air conditioning capacity of the other one of the outdoor air handler (10) and the air conditioner (20) compared with a case where the outdoor air handler (10) and the air conditioner (20) are in a temperature adjusting state in which the temperature of the air is adjusted.Type: GrantFiled: November 29, 2021Date of Patent: August 2, 2022Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Yasunori Okamoto, Naotoshi Fujita, Kouji Tatsumi, Masaaki Kawagishi, Shinya Umase
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Publication number: 20220235961Abstract: The present disclosure controls the supply of conditioned air to moderate the energy consumption by the heat source side in the supply of conditioned air using ducts in an air conditioning system. A heat exchanger unit includes a use side heat exchanger. A plurality of ducts distribute conditioned air that has passed through the use side heat exchanger of the heat exchanger unit. A plurality of fan units suction the conditioned air from the heat exchanger unit through the plurality of ducts, and supply the conditioned air to an air conditioned space. Each fan unit includes a fan motor that acts as an actuator configured to change an individual air supply amount of the conditioned air. A controller controls the plurality of fan motors to control the respective air supply amounts of the plurality of fan units.Type: ApplicationFiled: December 27, 2019Publication date: July 28, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Shuuichi TANAKA, Yoshiteru NOUCHI, Kouji TATSUMI, Ryouta SUZUKI, Taishi NAKASHIMA
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Publication number: 20220214072Abstract: A control load is reduced in a fan unit capable of controlling air flow volume. The rotation speed of a fan can be changed. An air flow volume detector detects air flow volume of the fan or equivalent air flow volume that is a physical quantity corresponding to the air flow volume of the fan. A unit casing houses, therein, the fan and the air flow volume detector. A fan controller, which is a controller, controls the rotation speed of the fan. The fan controller controls the rotation speed of the fan on the basis of a command value of the air flow volume of the fan given from outside the unit and a detected value of the air flow volume or the equivalent air flow volume detected by the air flow volume detector.Type: ApplicationFiled: April 15, 2020Publication date: July 7, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Shuuichi TANAKA, Akira KOMATSU, Toru FUJIMOTO, Yoshiteru NOUCHI, Kouji TATSUMI, Ryouta SUZUKI, Taishi NAKASHIMA
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Publication number: 20220214071Abstract: An air supply system moderates excess energy consumption occurring in fans. A second unit includes a second fan that supplies first air to a target space. A duct sends the first air sent from a first unit by a first fan to the second unit. A remote sensor acting as a first detector detects information about second air in the target space. A main controller acting as a first controller communicates with the second unit and the remote sensor. The second unit includes a second detector that detects the air flow volume sent by the second fan, and a sub-controller acting as a second controller that controls the rotation speed of the second fan. The main controller determines a target air flow volume of the second unit on the basis of the information about the second air acquired from the remote sensor, and transmits an instruction indicating the target air flow volume to the sub-controller.Type: ApplicationFiled: April 15, 2020Publication date: July 7, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Kouji TATSUMI, Ryouta SUZUKI, Taishi NAKASHIMA
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Publication number: 20220146124Abstract: Provided is an air conditioning system that uses ducts to supply conditioned air to a plurality of places inside a building, and is configured to counteract air backflow that occurs in ducts. A heat exchanger unit includes a use side heat exchanger. A plurality of ducts are connected to the heat exchanger unit. A plurality of fan units suction conditioned air from the heat exchanger unit, and supply the conditioned air to a plurality of air outlets through the plurality of ducts. A differential pressure sensor acting as a detector detects air backflow proceeding from at least one air outlet among the plurality of air outlets toward the heat exchanger unit in a plurality of distribution flow paths including the plurality of ducts, the plurality of fan units, and the air outlets of a plurality of outlet units.Type: ApplicationFiled: April 15, 2020Publication date: May 12, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Shuuichi TANAKA, Yoshiteru NOUCHI, Kouji TATSUMI
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Publication number: 20220146123Abstract: An air treatment system controls airflow volume in accordance with momentarily varying airflow volume to be demanded. A supply fan unit is disposed separately from an air treatment unit, and sends outdoor air from an outdoor space to the air treatment unit and sends outdoor air treated by the air treatment unit to an indoor space. An exhaust fan unit is disposed separately from the air treatment unit, and sends indoor air from the indoor space to the air treatment unit and sends indoor air treated by the air treatment unit to the outdoor space. A controller controls a rotation speed of a first fan in accordance with a first detection value of a first airflow volume detection unit, and controls a rotation speed of a second fan in accordance with a second detection value of a second airflow volume detection unit.Type: ApplicationFiled: April 15, 2020Publication date: May 12, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Toru FUJIMOTO, Shuuichi TANAKA, Akira KOMATSU, Yoshiteru NOUCHI, Kouji TATSUMI, Ryouta SUZUKI, Taishi NAKASHIMA
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Publication number: 20220107098Abstract: When an outdoor air handler performs a heating humidifying operation and an air conditioner performs a cooling operation, a control device adjusts at least one of a to-be-supplied air temperature of the outdoor air handler, a to-be-supplied air flow rate of the outdoor air handler, a to-be-supplied water flow rate of the outdoor air handler, and a cooling temperature that is a temperature at an air heat exchanger of the air conditioner. The control device adjusts the to-be-supplied air temperature and the cooling temperature on the basis of dehumidification information, operation information, temperature information, and humidity information. The operation information is information regarding an operating state of the air conditioner.Type: ApplicationFiled: December 17, 2021Publication date: April 7, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Yasunori OKAMOTO, Naotoshi FUJITA, Kouji TATSUMI, Masaaki KAWAGISHI, Shinya UMASE
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Publication number: 20220082289Abstract: It is an object of the present disclosure to collectively control an outdoor air handler and an air conditioner optimally. An air-conditioning system (100) includes an outdoor air handler (10) configured to adjust a temperature and a humidity of taken-in outdoor air and supply the air to a target space (SP1, SP2), an air conditioner (20) configured to adjust a temperature of air in the target space (SP1, SP2), and a control unit (30). The control unit (30) is configured to, in a case where one of the outdoor air handler (10) and the air conditioner (20) is in a non-temperature adjusting state in which the temperature of the air is not adjusted, change an air conditioning capacity of the other one of the outdoor air handler (10) and the air conditioner (20) compared with a case where the outdoor air handler (10) and the air conditioner (20) are in a temperature adjusting state in which the temperature of the air is adjusted.Type: ApplicationFiled: November 29, 2021Publication date: March 17, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Yasunori OKAMOTO, Naotoshi FUJITA, Kouji TATSUMI, Masaaki KAWAGISHI, Shinya UMASE
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Publication number: 20220042702Abstract: In an air-conditioning system including an outside air processing device and an air-conditioning device, an operation of either one of the outside air processing device or the air-conditioning device is stopped if a temperature/humidity state that is at least either the temperature or humidity of air in a target space is within a predetermined range and if the load factor of at least one of the outside air processing device or the air-conditioning device is below a predetermined lower limit.Type: ApplicationFiled: October 13, 2021Publication date: February 10, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Yasunori OKAMOTO, Naotoshi FUJITA, Kouji TATSUMI, Masaaki KAWAGISHI, Shinya UMASE
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Patent number: 10989429Abstract: Provided is an air conditioning system that achieves energy conservation and comfortableness. In the air conditioning system (100), an outdoor-air conditioner (10) sucks outdoor-air (OA) and supplies the outdoor-air as supply air (SA) from an air handling unit (30). An indoor-air conditioner (50) cools or heats indoor-air (IA) that is an air inside a target space (SP) by using an indoor unit (70) and supplies the air to the target space (SP). A general control unit (90) controls performs cooperative load control in which an operating capacity of the outdoor-air conditioner (10) and an operating capacity of the indoor-air conditioner (50) are controlled in cooperation in accordance with a status of the outdoor-air (OA), a status of the indoor-air (IA), an operation status of the outdoor-air conditioner (10), and/or an operation status of the indoor-air conditioner (50).Type: GrantFiled: March 30, 2018Date of Patent: April 27, 2021Assignee: Daikin Industries, Ltd.Inventors: Yasunori Okamoto, Naotoshi Fujita, Kouji Tatsumi, Masaaki Kawagishi
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Publication number: 20200080742Abstract: Provided is an air conditioning system that achieves energy conservation and comfortableness. In the air conditioning system (100), an outdoor-air conditioner (10) sucks outdoor-air (OA) and supplies the outdoor-air as supply air (SA) from an air handling unit (30). An indoor-air conditioner (50) cools or heats indoor-air (IA) that is an air inside a target space (SP) by using an indoor unit (70) and supplies the air to the target space (SP). A general control unit (90) controls performs cooperative load control in which an operating capacity of the outdoor-air conditioner (10) and an operating capacity of the indoor-air conditioner (50) are controlled in cooperation in accordance with a status of the outdoor-air (OA), a status of the indoor-air (IA), an operation status of the outdoor-air conditioner (10), and/or an operation status of the indoor-air conditioner (50).Type: ApplicationFiled: March 30, 2018Publication date: March 12, 2020Inventors: Yasunori OKAMOTO, Naotoshi FUJITA, Kouji TATSUMI, Masaaki KAWAGISHI
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Publication number: 20190390357Abstract: A tin alloy plating solution comprising a soluble tin salt, a soluble salt of a metal nobler than tin, and a sulfide compound represented by general formula (I). In formula (I), n is 1 to 3. The metal nobler than tin is preferably silver, copper, gold, or bismuth.Type: ApplicationFiled: December 13, 2017Publication date: December 26, 2019Inventors: Kouji Tatsumi, Tsukasa Yasoshima, Takuma Katase
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Publication number: 20100046522Abstract: An ATM-ETHERNET converter (21B) is provided for relaying ATM cells (70) transmitted from a CLAD (22) of an ATM network (2B) to a CLAD (22) of an ATM network (2A) via a wide area Ethernet (3). The ATM-ETHERNET converter (21B) is provided with an ATM-PHY (212) receiving the ATM cells (70) transmitted from the CLAD (22) of the ATM network (2B), a buffer (41) storing the ATM cells (70) thus received, a LAN switch (214) that encapsulates the ATM cells (70) stored in the buffer (41) in a frame (FRD) corresponding to the wide area Ethernet (3) and sends the ATM cells (70) to the wide area Ethernet (3), and a CPU (211) starting discarding the ATM cells (70) stored in the buffer (41) at a predetermined time.Type: ApplicationFiled: September 4, 2009Publication date: February 25, 2010Applicant: FUJITSU LIMITEDInventors: Kouji Tatsumi, Toshihiko Inoue, Hayato Masuhara, Kazuhisa Shimazaki, Norihisa Uchimoto, Kouichiro Yamada