Patents by Inventor Masashi Tagawa
Masashi Tagawa 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: 10060418Abstract: A solar heat receiver includes a casing having an aperture, and a piping system provided in the casing and discharging a heat medium, which is sent from a fluid supply source, to a fluid supply destination after the heat medium is heated by the solar light. The piping system includes: heat receiver tubes that heat the heat medium flowing therein; an inlet header tube that distributes the heat medium, which is introduced from the fluid supply source, to each of the heat receiver tubes, and an outlet header tube that collects the heat medium passing through each of the heat receiver tubes, and leads the heat medium to the fluid supply destination. The inlet header tube and the outlet header tube have a larger inner diameter than each of the heat receiver tubes.Type: GrantFiled: November 22, 2012Date of Patent: August 28, 2018Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kazuta Kobayashi, Masashi Tagawa, Toshiyuki Osada, Takeshi Okubo
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Patent number: 9188127Abstract: A drive unit of a magnet coupling pump, in which leakage of the magnetic flux to the outside and the effect of the external magnetic field are suppressed. The drive unit includes: a driving magnet (219) positioned at an outside of the driven magnet (19) of the magnetic coupling pump (100) with respect to a rotation axis (A) of the magnetic coupling pump (100) to face the driven magnet (19) with a gap; a cup tube portion (221) made of a ferromagnetic material and in a tubular shape centered on the rotation axis (A); a case main body (231) including a cup (220) in which the driving magnet is fixed inside of the cup tube portion; a motor (210) rotating the cup around the rotation axis, and a tube portion (232), which is tubular in shape. The cup is provided in the tube portion (232) with a gap.Type: GrantFiled: September 13, 2012Date of Patent: November 17, 2015Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hideo Hoshi, Shogo Nakashima, Tatsuya Hidaka, Yasuharu Yamamoto, Takeshi Okubo, Toshiyuki Osada, Masashi Tagawa
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Patent number: 9032730Abstract: A solar receiver is disposed on a top portion of a tower provided upright on the ground for heating a compressible working fluid by means of heat converted from sunlight collected by heliostats disposed on the ground, to raise the temperature of the compressible working fluid. The solar receiver has modules disposed back-to-back, and each of which includes a casing having a bottom plate to be fixed to the top-portion upper surface of the tower. A heat-transfer-tube unit is accommodated in the casing and includes heat transfer tubes. A sunlight inlet port having a circular shape in front view or an elliptical shape in front view is provided at the center portion of a plate-like member whose lower end is connected to an outer circumferential end of the bottom plate to constitute the casing and that extends obliquely upward from the outer circumferential end.Type: GrantFiled: November 22, 2011Date of Patent: May 19, 2015Assignee: MITSUBISHI HEAVEY INDUSTRIES, LTD.Inventors: Kazuta Kobayashi, Masashi Tagawa, Toshiyuki Osada, Kuniaki Aoyama, Masahiro Masuda, Takeshi Okubo, Shuhei Sasaki, Akira Furutani, Jin Kato, Hiromi Nakatani
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Patent number: 8997734Abstract: The concentrating heat receiver (10) is provided with a casing (41) which has an opening portion (15) into which sunrays are made incident, a heat receiving portion (42) which is accommodated inside the casing (41) so that a working fluid flows therethrough and receive heat from sunrays made incident from the opening portion, thereby raising the temperature of the working fluid, and hanging members (61, 62) in which the upper end sides thereof are coupled to an upper angle (14) and the other end sides thereof are loosely inserted into through holes (44a, 44b) of the casing (41), thereby supporting in a hanging manner the heat receiving portion (42) inside the casing (41).Type: GrantFiled: December 13, 2011Date of Patent: April 7, 2015Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Kimihiko Mitsuda, Yasuharu Yamamoto, Toshiyuki Osada, Masashi Tagawa, Kazuta Kobayashi
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Publication number: 20140305124Abstract: A solar heat receiver includes a casing having an aperture, and a piping system provided in the casing and discharging a heat medium, which is sent from a fluid supply source, to a fluid supply destination after the heat medium is heated by the solar light. The piping system includes: heat receiver tubes that heat the heat medium flowing therein; an inlet header tube that distributes the heat medium, which is introduced from the fluid supply source, to each of the heat receiver tubes, and an outlet header tube that collects the heat medium passing through each of the heat receiver tubes, and leads the heat medium to the fluid supply destination. The inlet header tube and the outlet header tube have a larger inner diameter than each of the heat receiver tubes.Type: ApplicationFiled: November 22, 2012Publication date: October 16, 2014Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kazuta Kobayashi, Masashi Tagawa, Toshiyuki Osada, Takeshi Okubo
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Publication number: 20140290248Abstract: A solar heat receiver includes a heat receiver tube support member that holds, with regular distances, longitudinally intermediate potions of a plurality of heat receiver tubes arranged in parallel and in plane. The support member extends to cross a longitudinal direction of the heat receiver tubes, and thus does not naturally move in the longitudinal direction of the heat receiver tubes, and when a predetermined force is applied in the longitudinal direction of the tubes, a position of the support member is maintained by a frictional force such that there is a slide between the heat receiver tube support member and the heat receiver tubes. Also, a plurality of heat receiver tube support members are provided in one solar heat receiver, and the heat receiver tubes are divided into a plurality of groups by the plurality of heat receiver tube support members.Type: ApplicationFiled: December 21, 2012Publication date: October 2, 2014Applicant: MITSHUBHISH HEAVY INDUSTRIES, LTDInventors: Kazuta Kobayashi, Masashi Tagawa, Toshiyuki Osada, Takeshi Okubo, Akira Furutani
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Patent number: 8312703Abstract: A solar-thermal gas turbine generator is equipped with a compressor, a heat receiver, and a turbine. Additionally, there is a generator that is driven by the solar-thermal gas turbine to generate power; and a steam power generation cycle in which high-temperature air exhausted from the turbine is introduced into a steam generator and in which a steam turbine that is operated with steam generated at the steam generator drives a generator to generator power, wherein a solar-thermal steam generator that generates steam by being heated with heat collected by the light collector is provided upstream of the steam turbine of the steam power generation cycle, and a distribution ratio for distributing the sunlight collected by the light collector to the heat receiver and the solar-thermal steam generator is adjusted in accordance with the sunlight intensity.Type: GrantFiled: June 4, 2010Date of Patent: November 20, 2012Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Kuniaki Aoyama, Kei Inoue, Kazuta Kobayashi, Masashi Tagawa, Toshiyuki Osada, Manabu Maeda
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SUNLIGHT COLLECTION SYSTEM, AND METHOD FOR ADJUSTING REFLECTING MIRROR OF SUNLIGHT COLLECTION SYSTEM
Publication number: 20120194930Abstract: The sunlight collection system is provided with a reflecting mirror which is placed on the surface of the ground to reflect sunlight, a light receiving means which is disposed above the surface of the ground and has an incident portion into which the sunlight reflected by the reflecting mirror is made incident, light amount sensors which are mounted at least at two locations facing each other at an outer edge of the incident portion of the light receiving means, a turning mechanism which allows the reflecting mirror to turn around at least one axis, and a direction control unit which obtains light amounts detected respectively by the light amount sensors that face each other, while allowing the reflecting mirror to turn by driving the turning mechanism, thereby adjusting an angle of the reflecting mirror on the basis of the light amounts.Type: ApplicationFiled: November 5, 2010Publication date: August 2, 2012Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Keiji Mizuta, Yuichi Otani, Manabu Maeda, Masashi Tagawa, Takeshi Okubo -
Publication number: 20120180483Abstract: A solar receiver is disposed on a top portion of a tower provided upright on the ground for heating a compressible working fluid by means of heat converted from sunlight collected by heliostats disposed on the ground, to raise the temperature of the compressible working fluid. The solar receiver has modules disposed back-to-back, and each of which includes a casing having a bottom plate to be fixed to the top-portion upper surface of the tower. A heat-transfer-tube unit is accommodated in the casing and includes heat transfer tubes. A sunlight inlet port having a circular shape in front view or an elliptical shape in front view is provided at the center portion of a plate-like member whose lower end is connected to an outer circumferential end of the bottom plate to constitute the casing and that extends obliquely upward from the outer circumferential end.Type: ApplicationFiled: November 22, 2011Publication date: July 19, 2012Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kazuta KOBAYASHI, Masashi TAGAWA, Toshiyuki OSADA, Kuniaki AOYAMA, Masahiro MASUDA, Takeshi OKUBO, Shuhei SASAKI, Akira FURUTANI, Jin KATO, Hiromi NAKATANI
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Publication number: 20120160232Abstract: The concentrating heat receiver (10) is provided with a casing (41) which has an opening portion (15) into which sunrays are made incident, a heat receiving portion (42) which is accommodated inside the casing (41) so that a working fluid flows therethrough and receive heat from sunrays made incident from the opening portion, thereby raising the temperature of the working fluid, and hanging members (61, 62) in which the upper end sides thereof are coupled to an upper angle (14) and the other end sides thereof are loosely inserted into through holes (44a, 44b) of the casing (41), thereby supporting in a hanging manner the heat receiving portion (42) inside the casing (41).Type: ApplicationFiled: December 13, 2011Publication date: June 28, 2012Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kimihiko MITSUDA, Yasuharu YAMAMOTO, Toshiyuki OSADA, Masashi TAGAWA, Kazuta KOBAYASHI
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Patent number: 8114008Abstract: Provided are a magnetic coupling as an axial bearing including a driven magnet (11B3) that is a permanent magnet provided to a rotating body (11) inside a casing (12) and a drive magnet (23A) that is a permanent magnet placed face to face with the driven magnet in a radial direction of the rotating body outside the casing to be magnetically coupled with the driven magnet, a driving motor (22) that rotatably drives the drive magnet about an axis (P) of the rotating body, a radial bearing that is a dynamic bearing having annular bearing surfaces (12B1, 11B1) centering on the axis on an inner wall of the casing and the rotating body, each of the annular bearing surfaces being arranged with a gap between the drive magnet and the driven magnet in the radial direction of the rotating body, and a closed impeller (11A) including a front shroud (11A1) arranged on a front side in the axis direction in the rotating body, a rear shroud (11A2) arranged on a rear side in the axis direction of the front shroud, and a vane (Type: GrantFiled: January 22, 2009Date of Patent: February 14, 2012Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Tatsuya Hidaka, Takeshi Okubo, Yasuharu Yamamoto, Toshiyuki Osada, Masashi Tagawa
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Publication number: 20110259007Abstract: Provided is a concentrated solar power gas turbine that enables efficient operation to allow a reduction in capacity of the start-up driving source used for compensating for the shortage of solar heat quantity at the start-up/acceleration. The concentrated solar power gas turbine (GT1) includes a compressor (1) for taking in air and increasing the pressure thereof, the compressor (1) being provided with a start-up driving source for start-up/acceleration; a solar central receiver (2) for heating the high-pressure air, the pressure of which has been increased by the compressor (1), by the heat of sunlight collected by a heliostat to increase the temperature thereof; and a turbine (3) for converting thermal energy possessed by the high-temperature/high-pressure air to mechanical energy, wherein the fluid flow in the solar central receiver (2) is shut off to store heat in the period from the shutdown of the turbine (3) to the start-up thereof.Type: ApplicationFiled: May 31, 2010Publication date: October 27, 2011Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kuniaki Aoyama, Kei Inoue, Kazuta Kobayashi, Masashi Tagawa, Toshiyuki Osada, Masahiro Masuda
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Publication number: 20110252797Abstract: A gas turbine plant associated with a solar thermal electric generation system has a heat receiver which receives heat from the sun, a gas turbine having a compressor and a turbine which operates with an operating fluid compressed by the compressor and heated by the heat receiver, a temperature sensor which detects heat from the sun, an auxiliary driving device which is driven based on the temperature of the heat detected by the temperature sensor, and which starts the gas turbine, and a generator which converts kinetic energy generated as a result of the rotation of the turbine into electric energy.Type: ApplicationFiled: August 18, 2009Publication date: October 20, 2011Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kazuta Kobayashi, Masashi Tagawa, Kuniaki Aoyama, Toshiyuki Osada, Junichiro Masada, Manabu Maeda, Masahiro Masuda, Shiro Sugimoto, Hiroshi Kawashima, Takayoshi Iijima, Kenji Atarashiya, Keiji Mizuta, Shigenari Horie
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Publication number: 20110233940Abstract: A solar-thermal gas turbine generator is equipped with a compressor, a heat receiver, and a turbine. Additionally, there is a generator that is driven by the solar-thermal gas turbine to generate power; and a steam power generation cycle in which high-temperature air exhausted from the turbine is introduced into a steam generator and in which a steam turbine that is operated with steam generated at the steam generator drives a generator to generator power, wherein a solar-thermal steam generator that generates steam by being heated with heat collected by the light collector is provided upstream of the steam turbine of the steam power generation cycle, and a distribution ratio for distributing the sunlight collected by the light collector to the heat receiver and the solar-thermal steam generator is adjusted in accordance with the sunlight intensity.Type: ApplicationFiled: June 4, 2010Publication date: September 29, 2011Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kuniaki Aoyama, Kei Inoue, Kazuta Kobayashi, Masashi Tagawa, Toshiyuki Osada, Manabu Maeda
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Patent number: 7884314Abstract: A light guide mechanism for an illuminance sensor includes: a lighting window configured to pass through an external light; the illuminance sensor configured to detect an illuminance of the light passed through the lighting window; and a light-blocking part provided between the lighting window and the illuminance sensor and configured to block a light other than the light passed through the lighting window. The light-blocking part has an inner surface inclined with respect to a line perpendicular to a light-receiving surface of the illuminance sensor. A direction of inclination of the inner surface is such that the inner surface faces the light-receiving surface of the illuminance sensor.Type: GrantFiled: December 23, 2008Date of Patent: February 8, 2011Assignee: Fujitsu LimitedInventors: Wataru Hamada, Yuji Takemoto, Toshiharu Hagii, Hui Young Kang, Masashi Tagawa
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Publication number: 20100280305Abstract: Provided are a magnetic coupling as an axial bearing including a driven magnet (11B3) that is a permanent magnet provided to a rotating body (11) inside a casing (12) and a drive magnet (23A) that is a permanent magnet placed face to face with the driven magnet in a radial direction of the rotating body outside the casing to be magnetically coupled with the driven magnet, a driving motor (22) that rotatably drives the drive magnet about an axis (P) of the rotating body, a radial bearing that is a dynamic bearing having annular bearing surfaces (12B1, 11B1) centering on the axis on an inner wall of the casing and the rotating body, each of the annular bearing surfaces being arranged with a gap between the drive magnet and the driven magnet in the radial direction of the rotating body, and a closed impeller (11A) including a front shroud (11A1) arranged on a front side in the axis direction in the rotating body, a rear shroud (11A2) arranged on a rear side in the axis direction of the front shroud, and a vane (Type: ApplicationFiled: January 22, 2009Publication date: November 4, 2010Applicant: MITSUBISHI HEAVY INDUSTRIES, LTDInventors: Tatsuya Hidaka, Takeshi Okubo, Yasuharu Yamamoto, Toshiyuki Osada, Masashi Tagawa
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Publication number: 20090250598Abstract: A light guide mechanism for an illuminance sensor includes: a lighting window configured to pass through an external light; the illuminance sensor configured to detect an illuminance of the light passed through the lighting window; and a light-blocking part provided between the lighting window and the illuminance sensor and configured to block a light other than the light passed through the lighting window. The light-blocking part has an inner surface inclined with respect to a line perpendicular to a light-receiving surface of the illuminance sensor. A direction of inclination of the inner surface is such that the inner surface faces the light-receiving surface of the illuminance sensor.Type: ApplicationFiled: December 23, 2008Publication date: October 8, 2009Applicant: FUJITSU LIMITEDInventors: Wataru Hamada, Yuji Takemoto, Toshiharu Hagii, Hui Young Kang, Masashi Tagawa
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Patent number: 7300263Abstract: In a pump conveying a supercritical fluid or a liquid are provided stator slots and motor mold members which are charged between the stator slots, so as to have a stator can of a motor driving the pump from the outside thereof. Additionally, by providing a main shaft of a motor driving the pump and bearings supporting the main shaft with clearance-fitting and by tightening inner rings of the bearings to the main shaft in an axial direction, the bearings are fixed to the main shaft.Type: GrantFiled: April 15, 2005Date of Patent: November 27, 2007Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Kimihiko Mitsuda, Yasuharu Yamamoto, Toshiyuki Osada, Masashi Tagawa, Masatake Maekawa
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Publication number: 20050238510Abstract: In a pump conveying a supercritical fluid or a liquid are provided stator slots and motor mold members which are charged between the stator slots, so as to have a stator can of a motor driving the pump from the outside thereof. Additionally, by providing a main shaft of a motor driving the pump and bearings supporting the main shaft with clearance-fitting and by tightening inner rings of the bearings to the main shaft in an axial direction, the bearings are fixed to the main shaft.Type: ApplicationFiled: April 15, 2005Publication date: October 27, 2005Inventors: Kimihiko Mitsuda, Yasuharu Yamamoto, Toshiyuki Osada, Masashi Tagawa, Masatake Maekawa