Patents by Inventor Isamu Osawa
Isamu Osawa 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: 9920998Abstract: Disclosed are an air cooled condenser capable of preventing air from being mixed into a working medium flow path, and a power generating apparatus including the air cooled condenser. The air cooled condenser includes a heat exchanger for air-cooling a working medium indirectly through a wall, a fan, a sensor for measuring a pressure value of the working medium at an outlet of the heat exchanger, and a controller for controlling the rotating speed of the fan such that the pressure value obtained by the sensor comes closer to a target value set to be equal to or larger than an atmospheric pressure.Type: GrantFiled: January 23, 2013Date of Patent: March 20, 2018Assignee: Fuji Electric Co., ltd.Inventors: Kuniyuki Takahashi, Isamu Osawa
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Patent number: 9512741Abstract: A binary power generation device is equipped with the flow path of a medium circulating through a heat exchanger, a turbine, a condenser, and a pump. A method for removing air that has intruded into the flow path of the medium includes: an air intrusion detection step of calculating, based on the pressure and temperature of a gas retaining portion communicatively connected to the flow path of the medium, a pressure threshold value obtained by adding the saturated vapor pressure of the medium and a margin value and of detecting, by comparing the pressure of a gas phase portion with the pressure threshold value, that air has intruded into the medium; a medium liquefaction step of producing a gas by pressurizing a mixed gas of the medium and air to reduce the amount of the medium in the mixed gas; and an exhaust step of exhausting the gas.Type: GrantFiled: August 16, 2012Date of Patent: December 6, 2016Assignee: FUJI ELECTRIC CO., LTD.Inventors: Ichiro Myogan, Hiroaki Shibata, Yoshitaka Kawahara, Isamu Osawa, Kokan Kubota
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Patent number: 9487846Abstract: An electroconductive bonding material which has a high bonding strength to an inorganic nonmetal such as glass or a ceramic and which has excellent reliability in that it does not undergo peeling even when exposed to a high temperature has an alloy composition which comprises, in mass %, Zn: 0.1-15%, In: 2-16%, Sb: greater than 0% to at most 2%, optionally one or both of Ag: at most 2% and Cu: at most 1%, optionally at least one element selected from the group consisting of Ba, Ti, and Ca in a total amount of 0.01-0.15%, and a remainder of Sn. This electroconductive bonding material peels off when it is heated to at least its melting point and can be reused.Type: GrantFiled: August 30, 2013Date of Patent: November 8, 2016Assignee: Senju Metal Industry Co., Ltd.Inventors: Minoru Ueshima, Isamu Osawa
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Patent number: 9358498Abstract: A device for automatically detecting and removing air from a gas mixture of an organic gas and air includes calculating a saturation pressure value based on a temperature of the gas mixture in a reservoir 1, and obtaining a pressure threshold value by adding a margin value to the saturation pressure value. When the pressure value inside the reservoir 1 is higher than the pressure threshold value, air is detected to be in the gas mixture. After this detection, a controller 5 pressurizes and introduces the gas mixture into a pressure container 2 to condense the organic gas in the gas mixture, thus producing a diluted gas mixture. Subsequently, the diluted gas mixture is introduced to a supply side of a membrane unit 3, the organic gas in the diluted gas mixture is recovered at a permeation side thereof, and a residual gas is discharged outside of the device.Type: GrantFiled: October 19, 2012Date of Patent: June 7, 2016Assignee: FUJI ELECTRIC CO., LTD.Inventors: Mikiko Hatama, Kokan Kubota, Yoshitaka Kawahara, Hiroaki Shibata, Ichiro Myogan, Isamu Osawa
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Publication number: 20140250890Abstract: Disclosed are an air cooled condenser capable of preventing air from being mixed into a working medium flow path, and a power generating apparatus including the air cooled condenser. The air cooled condenser includes a heat exchanger for air-cooling a working medium indirectly through a wall, a fan, a sensor for measuring a pressure value of the working medium at an outlet of the heat exchanger, and a controller for controlling the rotating speed of the fan such that the pressure value obtained by the sensor comes closer to a target value set to be equal to or larger than an atmospheric pressure.Type: ApplicationFiled: January 23, 2013Publication date: September 11, 2014Applicant: Fuji Electric Co., Ltd.Inventors: Kuniyuki Takahashi, Isamu Osawa
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Publication number: 20140238023Abstract: A device for automatically detecting and removing air from a gas mixture of an organic gas and air includes calculating a saturation pressure value based on a temperature of the gas mixture in a reservoir 1, and obtaining a pressure threshold value by adding a margin value to the saturation pressure value. When the pressure value inside the reservoir 1 is higher than the pressure threshold value, air is detected to be in the gas mixture. After this detection, a controller 5 pressurizes and introduces the gas mixture into a pressure container 2 to condense the organic gas in the gas mixture, thus producing a diluted gas mixture. Subsequently, the diluted gas mixture is introduced to a supply side of a membrane unit 3, the organic gas in the diluted gas mixture is recovered at a permeation side thereof, and a residual gas is discharged outside of the device.Type: ApplicationFiled: October 19, 2012Publication date: August 28, 2014Applicant: FUJI ELECTRIC CO., LTD.Inventors: Mikiko Hatama, Kokan Kubota, Yoshitaka Kawahara, Hiroaki Sgu, Ichiro Myogan, Isamu Osawa
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Publication number: 20140190165Abstract: A binary power generation device is equipped with the flow path of a medium circulating through a heat exchanger, a turbine, a condenser, and a pump. A method for removing air that has intruded into the flow path of the medium includes: an air intrusion detection step of calculating, based on the pressure and temperature of a gas retaining portion communicatively connected to the flow path of the medium, a pressure threshold value obtained by adding the saturated vapor pressure of the medium and a margin value and of detecting, by comparing the pressure of a gas phase portion with the pressure threshold value, that air has intruded into the medium; a medium liquefaction step of producing a gas by pressurizing a mixed gas of the medium and air to reduce the amount of the medium in the mixed gas; and an exhaust step of exhausting the gas.Type: ApplicationFiled: August 16, 2012Publication date: July 10, 2014Inventors: Ichiro Myogan, Hiroaki Shibata, Yoshitaka Kawahara, Isamu Osawa, Kokan Kubota
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Publication number: 20140186208Abstract: To provide audio solder alloy which is senary solder alloy (Sn.Ag.Cu.In.Ni.Pb) and has their appropriate contained amounts to obtain excellent sound quality and high auditory assessment, as the joining solder for connecting various kinds of electronics parts used for electronic circuit such as a filter circuit NW for audio system. A preferably example of the contained amounts is as follows: Ag of 1.0 through 1.01% by mass, Cu of 0.71 through 0.72% by mass, In of 0.003 through 0.0037% by mass, Ni of 0.016 through 0.017% by mass, Pb of 0.0025 through 0.0035% by mass and the remainder of Sn.Type: ApplicationFiled: May 10, 2012Publication date: July 3, 2014Applicant: SENJU METAL INDUSTRY CO., LTD.Inventors: Ippei Akagi, Hideki Tokimoto, Seiki Suzuki, Masahumi Seino, Isamu Osawa, Minoru Ueshima
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Patent number: 8407027Abstract: An online diagnostic system for a geothermal generation facility is discloses that includes an automatic steam measurement device for measuring a characteristic of steam to be supplied to a steam turbine from a steam-water separator at the geothermal generation facility that outputs analysis data. A monitor-control device controls an operation of the geothermal generation facility while monitoring the geothermal generation facility. A diagnostic device performs at least one of an evaluation of a steam characteristic at the geothermal generation facility, an evaluation of the steam-water separator, and an evaluation of pulsation and confluence of a production well based on the analysis data from the automatic steam measurement device and performance data of the geothermal generation facility from the monitor-control device. An operating status of the geothermal generation facility is diagnosed.Type: GrantFiled: October 19, 2009Date of Patent: March 26, 2013Assignees: Fuji Electric Systems Co., Ltd., Geothermal Engineering Co., Ltd.Inventors: Ichiro Myougan, Toshikazu Kato, Isamu Osawa, Yasuyuki Hishi, Daisuke Fukuda, Yasuto Futagoishi, Toshiaki Aoki
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Publication number: 20110144947Abstract: An online diagnostic system for a geothermal generation facility is discloses that includes: an automatic steam measurement device for measuring a characteristic of steam to be supplied to a steam turbine from a steam-water separator at the geothermal generation facility that outputs analysis data. A monitor•control device controls an operation of the geothermal generation facility while monitoring the geothermal generation facility. A diagnostic device performs at least one of an evaluation of a steam characteristic at the geothermal generation facility, an evaluation of the steam-water separator, and an evaluation of pulsation and confluence of a production well based on the analysis data from the automatic steam measurement device and performance data of the geothermal generation facility from the monitor•control device. An operating status of the geothermal generation facility is diagnosed.Type: ApplicationFiled: October 19, 2009Publication date: June 16, 2011Applicants: FUJI ELECTRIC SYSTEMS CO., LTD., GEOTHERMAL ENGINEERING CO., LTD.Inventors: Ichiro Myougan, Toshikazu Kato, Isamu Osawa, Yasuyuki Hishi, Daisuke Fukuda, Yasuto Futagoishi, Toshiaki Aoki