Patents by Inventor Shuji Kameyama
Shuji Kameyama 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: 10473360Abstract: A fan includes: an impeller including a main plate having a first plane, a plurality of first blades each formed the first plane, and a shroud formed integrally with the plurality of first blades; a fan case; a drive source; and a rotation shaft. The first blades each include a linearly protruding region that is linearly increased in height from an outer circumferential side to an inner circumferential side, and a curvedly protruding region that is curvedly increased in height from the outer circumferential side to the inner circumferential side, the height extending in a direction in which each first blade protrudes. The linearly protruding region is welded to the main plate. Accordingly, a highly durable fan can be implemented that allows sufficient durability to be maintained even under a high temperature environment or an acid environment.Type: GrantFiled: February 15, 2018Date of Patent: November 12, 2019Assignee: NORITZ CORPORATIONInventors: Shuji Kameyama, Keigo Fukunishi, Mitsuo Nomura, Masaaki Takata, Yukio Yoshida, Tadashi Takewaka
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Patent number: 10473359Abstract: A fan includes: an impeller including a main plate having a first plane, a plurality of first blades each formed the first plane, and a shroud formed integrally with the plurality of first blades; a fan case; a drive source; and a rotation shaft. The first blades each include a linearly protruding region that is linearly increased in height from an outer circumferential side to an inner circumferential side, and a curvedly protruding region that is curvedly increased in height from the outer circumferential side to the inner circumferential side, the height extending in a direction in which each first blade protrudes. The linearly protruding region is welded to the main plate. Accordingly, a highly durable fan can be implemented that allows sufficient durability to be maintained even under a high temperature environment or an acid environment.Type: GrantFiled: February 15, 2018Date of Patent: November 12, 2019Assignee: NORITZ CORPORATIONInventors: Shuji Kameyama, Keigo Fukunishi, Mitsuo Nomura
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Patent number: 10072842Abstract: A water heater capable of cooling a fan by inflow of air while suppressing backflow of combustion gas is provided. A fan includes: a fan case having a back surface wall; an impeller having a first blade and a second blade and housed in the fan case; a drive source rotating the impeller; and a rotation shaft coupling the impeller and the drive source through a through hole provided in the back surface wall. A gap through which air outside the fan case is suctioned into the fan case is provided between the rotation shaft and the back surface wall. The second blade faces the back surface wall without another member interposed therebetween throughout a range from an inner circumferential side to an outer circumferential side of the second plane.Type: GrantFiled: February 11, 2015Date of Patent: September 11, 2018Assignee: NORITZ CORPORATIONInventors: Shuji Kameyama, Yasutaka Kuriyama, Norihide Wada, Keigo Fukunishi, Tatsuya Karaki
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Publication number: 20180180324Abstract: A fan includes: an impeller including a main plate having a first plane, a plurality of first blades each formed the first plane, and a shroud formed integrally with the plurality of first blades; a fan case; a drive source; and a rotation shaft. The first blades each include a linearly protruding region that is linearly increased in height from an outer circumferential side to an inner circumferential side, and a curvedly protruding region that is curvedly increased in height from the outer circumferential side to the inner circumferential side, the height extending in a direction in which each first blade protrudes. The linearly protruding region is welded to the main plate. Accordingly, a highly durable fan can be implemented that allows sufficient durability to be maintained even under a high temperature environment or an acid environment.Type: ApplicationFiled: February 15, 2018Publication date: June 28, 2018Applicant: NORITZ CORPORATIONInventors: Shuji KAMEYAMA, Keigo FUKUNISHI, Mitsuo NOMURA
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Publication number: 20180172314Abstract: A fan includes: an impeller including a main plate having a first plane, a plurality of first blades each formed the first plane, and a shroud formed integrally with the plurality of first blades; a fan case; a drive source; and a rotation shaft. The first blades each include a linearly protruding region that is linearly increased in height from an outer circumferential side to an inner circumferential side, and a curvedly protruding region that is curvedly increased in height from the outer circumferential side to the inner circumferential side, the height extending in a direction in which each first blade protrudes. The linearly protruding region is welded to the main plate. Accordingly, a highly durable fan can be implemented that allows sufficient durability to be maintained even under a high temperature environment or an acid environment.Type: ApplicationFiled: February 15, 2018Publication date: June 21, 2018Applicant: NORITZ CORPORATIONInventors: Shuji KAMEYAMA, Keigo FUKUNISHI, Mitsuo NOMURA, Masaaki TAKATA, Yukio YOSHIDA, Tadashi TAKEWAKA
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Patent number: 9933185Abstract: A fan includes: an impeller including a main plate having a first plane, a plurality of first blades each formed the first plane, and a shroud formed integrally with the plurality of first blades; a fan case; a drive source; and a rotation shaft. The first blades each include a linearly protruding region that is linearly increased in height from an outer circumferential side to an inner circumferential side, and a curvedly protruding region that is curvedly increased in height from the outer circumferential side to the inner circumferential side, the height extending in a direction in which each first blade protrudes. The linearly protruding region is welded to the main plate. Accordingly, a highly durable fan can be implemented that allows sufficient durability to be maintained even under a high temperature environment or an acid environment.Type: GrantFiled: February 11, 2015Date of Patent: April 3, 2018Assignee: NORITZ CORPORATIONInventors: Shuji Kameyama, Keigo Fukunishi, Mitsuo Nomura, Masaaki Takata, Yukio Yoshida, Tadashi Takewaka
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Patent number: 9869489Abstract: A fan assembly includes a fan and an emission connection portion. The fan includes a fan case having a first internal space, an impeller, and a rotation shaft. The emission connection portion includes a connection portion case having a second internal space and provided with an emission port for emitting gas sent from the fan to the outside of the fan assembly through the second internal space. In a plan view from a direction of axis of the rotation shaft, a tongue portion extending from one end toward the other end is located at a boundary between the first internal space and the second internal space, and the tongue portion is provided to extend to a position at least reaching a straight line connecting a center point of the emission port and a center of rotation of the rotation shaft to each other, from one end toward the other end.Type: GrantFiled: August 19, 2015Date of Patent: January 16, 2018Assignee: NORITZ CORPORATIONInventors: Keigo Fukunishi, Shuji Kameyama, Tatsuya Karaki
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Patent number: 9746204Abstract: A water heater is provided that can suppress backflow (entry) of drainage water into a fan from downstream of the fan in a path of a flow of combustion gas. The fan includes a fan case, an impeller housed within the fan case, a drive source attached to the fan case so as to drive the impeller, and a rotation shaft connecting the impeller and the drive source. An exhaust connection portion has a connection portion case and is provided with an exhaust port for emitting combustion gas delivered from the fan to outside of the water heater. The exhaust connection portion also has a drainage water discharge portion for discharging drainage water accumulated downstream of the fan in the path of the flow of combustion gas.Type: GrantFiled: July 20, 2015Date of Patent: August 29, 2017Assignee: NORITZ CORPORATIONInventors: Hironao Matsunaga, Shuji Kameyama, Keigo Fukunishi, Norihide Wada
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Patent number: 9513030Abstract: A water heater of a latent heat recovery type includes: a combustion apparatus including a burner having a plurality of burner port portions and generating combustion gas from openings at ends of the plurality of burner port portions; a heat exchanger heating water that flows through inside by heat exchange with combustion gas generated in the combustion apparatus; and a fan suctioning the combustion gas that has passed through the heat exchanger and emitting combustion gas to outside of the water heater. The fan includes a fan case, an impeller housed within the fan case, and a drive source connected to the impeller. At least a part of an upper surface of a bottom wall of the fan case is inclined with respect to a reference plane including the openings of the plurality of burner port portions.Type: GrantFiled: December 4, 2014Date of Patent: December 6, 2016Assignee: NORITZ CORPORATIONInventors: Tatsuya Karaki, Yasutaka Kuriyama, Norihide Wada, Shuji Kameyama, Keigo Fukunishi
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Patent number: 9404670Abstract: A fan serves to suction combustion gas which has passed through a secondary heat exchanger and emitting combustion gas to the outside of a water heater. A drainage water discharge pipe is connected to the secondary heat exchanger in order to discharge the drainage water produced as a result of recovery of latent heat in the secondary heat exchanger to the outside of the secondary heat exchanger. An air passage pipe is connected to an exhaust box. A Y-shaped pipe joint has a flow path allowing merging of the drainage water discharge pipe and the air passage pipe, and the flow path after merging leads to the outside of the water heater.Type: GrantFiled: December 4, 2014Date of Patent: August 2, 2016Assignee: NORITZ CORPORATIONInventors: Sakiko Kimura, Takeshi Oohigashi, Yasutaka Kuriyama, Shuji Kameyama
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Publication number: 20160069587Abstract: A fan assembly includes a fan and an emission connection portion. The fan includes a fan case having a first internal space, an impeller, and a rotation shaft. The emission connection portion includes a connection portion case having a second internal space and provided with an emission port for emitting gas sent from the fan to the outside of the fan assembly through the second internal space. In a plan view from a direction of axis of the rotation shaft, a tongue portion extending from one end toward the other end is located at a boundary between the first internal space and the second internal space, and the tongue portion is provided to extend to a position at least reaching a straight line connecting a center point of the emission port and a center of rotation of the rotation shaft to each other, from one end toward the other end.Type: ApplicationFiled: August 19, 2015Publication date: March 10, 2016Applicant: NORITZ CORPORATIONInventors: Keigo FUKUNISHI, Shuji KAMEYAMA, Tatsuya KARAKI
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Publication number: 20160025377Abstract: A water heater is provided that can suppress backflow (entry) of drainage water into a fan from downstream of the fan in a path of a flow of combustion gas. The fan includes a fan case, an impeller housed within the fan case, a drive source attached to the fan case so as to drive the impeller, and a rotation shaft connecting the impeller and the drive source. An exhaust connection portion has a connection portion case and is provided with an exhaust port for emitting combustion gas delivered from the fan to outside of the water heater. The exhaust connection portion also has a drainage water discharge portion for discharging drainage water accumulated downstream of the fan in the path of the flow of combustion gas.Type: ApplicationFiled: July 20, 2015Publication date: January 28, 2016Applicant: NORITZ CORPORATIONInventors: Hironao MATSUNAGA, Shuji KAMEYAMA, Keigo FUKUNISHI, Norihide WADA
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Publication number: 20150241088Abstract: A fan includes: an impeller including a main plate having a first plane, a plurality of first blades each formed the first plane, and a shroud formed integrally with the plurality of first blades; a fan case; a drive source; and a rotation shaft. The first blades each include a linearly protruding region that is linearly increased in height from an outer circumferential side to an inner circumferential side, and a curvedly protruding region that is curvedly increased in height from the outer circumferential side to the inner circumferential side, the height extending in a direction in which each first blade protrudes. The linearly protruding region is welded to the main plate. Accordingly, a highly durable fan can be implemented that allows sufficient durability to be maintained even under a high temperature environment or an acid environment.Type: ApplicationFiled: February 11, 2015Publication date: August 27, 2015Applicant: NORITZ CORPORATIONInventors: Shuji KAMEYAMA, Keigo FUKUNISHI, Mitsuo NOMURA, Masaaki TAKATA, Yukio YOSHIDA, Tadashi TAKEWAKA
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Publication number: 20150241086Abstract: A water heater capable of cooling a fan by inflow of air while suppressing backflow of combustion gas is provided. A fan includes: a fan case having a back surface wall; an impeller having a first blade and a second blade and housed in the fan case; a drive source rotating the impeller; and a rotation shaft coupling the impeller and the drive source through a through hole provided in the back surface wall. A gap through which air outside the fan case is suctioned into the fan case is provided between the rotation shaft and the back surface wall. The second blade faces the back surface wall without another member interposed therebeween throughout a range from an inner circumferential side to an outer circumferential side of the second plane.Type: ApplicationFiled: February 11, 2015Publication date: August 27, 2015Applicant: NORITZ CORPORATIONInventors: Shuji KAMEYAMA, Yasutaka KURIYAMA, Norihide WADA, Keigo FUKUNISHI, Tatsuya KARAKI
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Publication number: 20150176861Abstract: A water heater of a latent heat recovery type includes: a combustion apparatus including a burner having a plurality of burner port portions and generating combustion gas from openings at ends of the plurality of burner port portions; a heat exchanger heating water that flows through inside by heat exchange with combustion gas generated in the combustion apparatus; and a fan suctioning the combustion gas that has passed through the heat exchanger and emitting combustion gas to outside of the water heater. The fan includes a fan case, an impeller housed within the fan case, and a drive source connected to the impeller. At least a part of an upper surface of a bottom wall of the fan case is inclined with respect to a reference plane including the openings of the plurality of burner port portions.Type: ApplicationFiled: December 4, 2014Publication date: June 25, 2015Applicant: NORITZ CORPORATIONInventors: Tatsuya KARAKI, Yasutaka KURIYAMA, Norihide WADA, Shuji KAMEYAMA, Keigo FUKUNISHI
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Publication number: 20150176862Abstract: A fan serves to suction combustion gas which has passed through a secondary heat exchanger and emitting combustion gas to the outside of a water heater. A drainage water discharge pipe is connected to the secondary heat exchanger in order to discharge the drainage water produced as a result of recovery of latent heat in the secondary heat exchanger to the outside of the secondary heat exchanger. An air passage pipe is connected to an exhaust box. A Y-shaped pipe joint has a flow path allowing merging of the drainage water discharge pipe and the air passage pipe, and the flow path after merging leads to the outside of the water heater.Type: ApplicationFiled: December 4, 2014Publication date: June 25, 2015Applicant: NORITZ CORPORATIONInventors: Sakiko KIMURA, Takeshi OOHIGASHI, Yasutaka KURIYAMA, Shuji KAMEYAMA
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Patent number: 8881689Abstract: An exhaust adapter A having an inner tubular wall 41 forming a through hole 40 communicating with an exhaust port 14, an outer tubular wall 42 surrounding the inner tubular wall 41, and an annular concave part 43 formed between the inner tubular wall 41 and the outer tubular wall 42. One of at least two types of exhaust pipes having different pipe diameters can be selectively connected as an exhaust pipe 2 by utilizing either the through hole 40 or the annular concavity 43. Height H1 of the inner tubular wall 41 is designed to be lower than height H2 of the outer tubular wall 42. Drain flowing in the annular concave part 43 is prevented from flowing out around the outer tubular wall 42 and furthermore the exhaust adapter A can be accurately used for various types of exhaust pipes with different pipe diameters.Type: GrantFiled: April 26, 2012Date of Patent: November 11, 2014Assignee: Noritz CorporationInventor: Shuji Kameyama
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Publication number: 20120272928Abstract: An exhaust adapter A having an inner tubular wall 41 forming a through hole 40 communicating with an exhaust port 14, an outer tubular wall 42 surrounding the inner tubular wall 41, and an annular concave part 43 formed between the inner tubular wall 41 and the outer tubular wall 42. One of at least two types of exhaust pipes having different pipe diameters can be selectively connected as an exhaust pipe 2 by utilizing either the through hole 40 or the annular concavity 43. Height H1 of the inner tubular wall 41 is designed to be lower than height H2 of the outer tubular wall 42. Drain flowing in the annular concave part 43 is prevented from flowing out around the outer tubular wall 42 and furthermore the exhaust adapter A can be accurately used for various types of exhaust pipes with different pipe diameters.Type: ApplicationFiled: April 26, 2012Publication date: November 1, 2012Applicant: NORITZ CORPORATIONInventor: SHUJI KAMEYAMA
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Publication number: 20110259317Abstract: According to the hot water supply apparatus of the present invention, it becomes possible to effectively prevent the dew condensation on a bypass line. While exhaust gas after passage through a heat exchanger 2 is passing through an exhaust gas collection section 14 and then through an exhaust gas tube 15, combustion air in the inside of an inlet air tube 16 and a supply air collection section 17 is heated by heat exchange. A bypass line 19 which connects together a water supply line 3 and a hot water supply line 5 is disposed so as to pass through a clearance 20 defined between a supply air duct 18 which supplies heated combustion air to an air sending fan 6 and a burner casing 10 whereby the bypass line 19 is heated by the heat of combustion air in the inside of the supply air duct 18. Alternatively, the bypass line 19 may be disposed and placed so as to pass through the inside of the supply air duct 18.Type: ApplicationFiled: April 19, 2011Publication date: October 27, 2011Applicant: NORITZ CORPORATIONInventors: Shuji Kameyama, Tomofumi Kinugasa
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Patent number: 7871586Abstract: The present invention provides a mercury removal system and method for effectively removing a mercury component, which is present in a gas stream in an extremely small amount in wet gas cleaning. The mercury removal system in wet gas cleaning includes a water washing tower for introducing therein a target gas containing a mercury component and transferring the mercury component into an absorbing solution, a flash drum (10) for flashing the absorbing solution discharged from the water washing tower to separate the absorbing solution into a gas component and waste water, an oxidation treatment means (1) for adding an oxidizing agent to the absorbing solution at the preceding stage of the flash drum, and a waste water treatment means for subjecting to coagulation sedimentation treatment the separated waste water containing the mercury component at the following stage of the flash drum to dispose of the mercury component as sludge.Type: GrantFiled: June 9, 2006Date of Patent: January 18, 2011Assignees: Mitsubishi Heavy Industries, Ltd., Clean Coal Power R&D Co., Ltd., Hokkaido Electric Power Company, Inc., Tohoku Electric Power Co., Inc., The Tokyo Electric Power Company Inc., Chubu Electric Power Co., Inc., Hokuriku Electric Power Company, The Kansai Electric Power Co., Inc., The Chugoku Electric Power Co., Inc., Shikoku Electric Power Co., Inc., Kyushu Electric Power Co., Inc., Central Research Institute of Electric Power IndustryInventors: Masahiro Harada, Makoto Susaki, Shintaro Honjo, Shuji Kameyama, Masaki Nakahara, Akira Kisei