Patents by Inventor Ryosuke YUMOTO
Ryosuke YUMOTO 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: 11808163Abstract: A turbine housing has: a first inner member; a second inner member contacting with the first inner member; a turbine scroll flow path enclosed and defined by the first inner member and the second inner member; a first casting housing covering the first inner member at a side opposite to the second inner member; a second casting housing covering the second inner member at a side opposite to the first inner member; an aperture formed in one or both of the first casting housing and the second casting housing and including an opening that opens to an outside; a tube member arranged in the aperture and defining an inlet flow path connected to the turbine scroll flow path; and an inner opening defined by the first inner member and the second inner member and overlapping with one end of the tube member.Type: GrantFiled: October 14, 2021Date of Patent: November 7, 2023Assignee: IHI CORPORATIONInventors: Hikaru Sugiura, Yuji Sasaki, Kai Iijima, Ryosuke Yumoto, Tatsuya Fukui, Yoshihito Katsu
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Patent number: 11788552Abstract: An example rotary machine includes a motor including a rotor and a stator, and a cooling jacket disposed around the stator. The cooling jacket includes an inner body part being cylindrical and in contact with the stator, an outer body part being cylindrical and surrounding the inner body part, and a groove through which a cooling medium passes, the groove circling helically around an outer circumference of the inner body part at least once. The groove has a pair of side surfaces opposed in a direction of an axis of rotation of the rotor, and a bottom surface connected to each of the pair of side surfaces. Each of the pair of side surfaces is formed having a draft angle inclined away from each other, the draft angle inclined relative to a release direction orthogonal to the axis of rotation.Type: GrantFiled: December 24, 2020Date of Patent: October 17, 2023Inventors: Kuniaki Iizuka, Yuji Sasaki, Tatsumi Inomata, Ryosuke Yumoto, Kai Iijima, Tatsuya Fukui, Hikaru Sugiura, Yoshihito Katsu
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Patent number: 11664694Abstract: A motor rotor includes an inner sleeve, a cylindrical permanent magnet disposed around the inner sleeve, and a resin portion formed by charging a gap between the inner sleeve and the permanent magnet with a resin. The inner sleeve includes a small diameter portion. The small diameter portion is located to face an inner peripheral surface of an end portion of the permanent magnet in an axial direction. The small diameter portion is formed to have a diameter smaller than a diameter of a portion facing an inner peripheral surface of a center portion of the permanent magnet in the axial direction.Type: GrantFiled: October 1, 2021Date of Patent: May 30, 2023Inventors: Kai Iijima, Hikaru Sugiura, Yuji Sasaki, Tatsuya Fukui, Yoshihito Katsu, Ryosuke Yumoto
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Patent number: 11359642Abstract: This electric compressor includes a rotation shaft including a first end and a second end, a compressor impeller which is mounted on the first end of the rotation shaft and includes a back surface facing the second end, a motor disposed between the first end and the second end of the rotation shaft, a wall portion which separates an impeller space and a motor space from each other and includes a reference wall surface having a shape along the back surface of the compressor impeller, and a bypass hole which is formed in the wall portion to connect the impeller space to the motor space and includes a first opening which opens to the impeller space. In the wall portion, a recessed portion which is disposed around the first opening of the bypass hole and recessed from the reference wall surface is formed.Type: GrantFiled: December 17, 2020Date of Patent: June 14, 2022Inventors: Kuniaki Iizuka, Yuji Sasaki, Tatsumi Inomata, Ryosuke Yumoto, Kai Iijima, Tatsuya Fukui, Hikaru Sugiura, Yoshihito Katsu, Takashi Yoshida, Takashi Mori
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Patent number: 11268505Abstract: An electric compressor includes a casing which accommodates an inverter and includes a bottom plate on which a power board of the inverter is mounted and a cooling water passage which is provided in a housing and opens to a bottom plate of the casing. The bottom plate of the casing includes a first surface on which a power board is mounted and a second surface opposite to the first surface. A metal plate is buried at a position corresponding to the power board in the bottom plate and a rear surface of the metal plate is exposed to the second surface side and faces the cooling water passage.Type: GrantFiled: November 10, 2017Date of Patent: March 8, 2022Assignee: IHI CorporationInventors: Yuji Sasaki, Takashi Yoshida, Tatsumi Inomata, Kuniaki Iizuka, Takuya Ozasa, Ryosuke Yumoto
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Publication number: 20220034239Abstract: A turbine housing has: a first inner member; a second inner member contacting with the first inner member; a turbine scroll flow path enclosed and defined by the first inner member and the second inner member; a first casting housing covering the first inner member at a side opposite to the second inner member; a second casting housing covering the second inner member at a side opposite to the first inner member; an aperture formed in one or both of the first casting housing and the second casting housing and including an opening that opens to an outside; a tube member arranged in the aperture and defining an inlet flow path connected to the turbine scroll flow path; and an inner opening defined by the first inner member and the second inner member and overlapping with one end of the tube member.Type: ApplicationFiled: October 14, 2021Publication date: February 3, 2022Applicant: IHI CorporationInventors: Hikaru SUGIURA, Yuji SASAKI, Kai IIJIMA, Ryosuke YUMOTO, Tatsuya FUKUI, Yoshihito KATSU
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Publication number: 20220029487Abstract: An example motor rotor includes a cylindrical magnet which is disposed around a rotation shaft, a protective layer which is disposed around the magnet, and a middle resin portion which is disposed between the magnet and the protective layer. The magnet has a cylindrical shape that extends continuously in a circumferential direction of the rotation shaft. A surface treatment portion is formed on at least one of an outer peripheral surface of the magnet or an inner peripheral surface of the protective layer, to impart adhesion with the middle resin portion.Type: ApplicationFiled: October 5, 2021Publication date: January 27, 2022Inventors: Hikaru SUGIURA, Yuji SASAKI, Tatsumi INOMATA, Kai IIJIMA, Tatsuya FUKUI, Yoshihito KATSU, Kuniaki IIZUKA, Ryosuke YUMOTO
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Publication number: 20220021255Abstract: A motor rotor includes an inner sleeve, a cylindrical permanent magnet disposed around the inner sleeve, and a resin portion formed by charging a gap between the inner sleeve and the permanent magnet with a resin. The inner sleeve includes a small diameter portion. The small diameter portion is located to face an inner peripheral surface of an end portion of the permanent magnet in an axial direction. The small diameter portion is formed to have a diameter smaller than a diameter of a portion facing an inner peripheral surface of a center portion of the permanent magnet in the axial direction.Type: ApplicationFiled: October 1, 2021Publication date: January 20, 2022Inventors: Kai IIJIMA, Hikaru SUGIURA, Yuji SASAKI, Tatsuya FUKUI, Yoshihito KATSU, Ryosuke YUMOTO
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Publication number: 20210203199Abstract: An IPM motor includes a rotation shaft, a rotor, and a stator. The rotor includes a rotor body, a magnet, and a resin filled between the magnet and the rotor body. The magnet includes a magnet main surface, a magnet back surface, and a magnet side surface. The rotor body includes a slot side surface facing the magnet side surface. The slot side surface includes a first flat surface portion and an inclined surface portion. The resin includes a first side surface resin portion filled between the magnet side surface and the first flat surface portion and a second side surface resin portion filled between the magnet side surface and the inclined surface portion.Type: ApplicationFiled: February 24, 2021Publication date: July 1, 2021Inventors: Kai IIJIMA, Tatsumi INOMATA, Yuji SASAKI, Hikaru SUGIURA, Kuniaki IIZUKA, Tatsuya FUKUI, Ryosuke YUMOTO, Yoshihito KATSU
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Patent number: 11015618Abstract: A centrifugal compressor includes a compressor impeller attached to a rotary shaft and a housing accommodating the rotary shaft and the compressor impeller. The housing includes a suction portion formed upstream of the compressor impeller and a high pressure part formed on a rear face side of the compressor impeller and having a pressure higher than a pressure in the suction portion during rotation of the compressor impeller. The housing has a discharge passage formed for connecting the high pressure part to a low pressure part including the suction portion and a gas flow path upstream of the suction portion.Type: GrantFiled: November 16, 2017Date of Patent: May 25, 2021Assignee: IHI CorporationInventors: Kuniaki Iizuka, Takashi Yoshida, Yuji Sasaki, Tatsumi Inomata, Takuya Ozasa, Ryosuke Yumoto, Takashi Mori
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Publication number: 20210115925Abstract: An example rotary machine includes a motor including a rotor and a stator, and a cooling jacket disposed around the stator. The cooling jacket includes an inner body part being cylindrical and in contact with the stator, an outer body part being cylindrical and surrounding the inner body part, and a groove through which a cooling medium passes, the groove circling helically around an outer circumference of the inner body part at least once. The groove has a pair of side surfaces opposed in a direction of an axis of rotation of the rotor, and a bottom surface connected to each of the pair of side surfaces. Each of the pair of side surfaces is formed having a draft angle inclined away from each other, the draft angle inclined relative to a release direction orthogonal to the axis of rotation.Type: ApplicationFiled: December 24, 2020Publication date: April 22, 2021Inventors: Kuniaki IIZUKA, Yuji SASAKI, Tatsumi INOMATA, Ryosuke YUMOTO, Kai IIJIMA, Tatsuya FUKUI, Hikaru SUGIURA, Yoshihito KATSU
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Patent number: 10982680Abstract: A turbocharger impeller includes: a cylindrical boss portion disposed around a rotary axis; a hub portion connected to the boss portion and extends in a radial direction of the rotary axis; and a blade portion protruding from the boss portion and the hub portion toward a tip end side in the direction of the rotary axis and the radial direction. At least a part of an outer peripheral part of the hub portion in the radial direction or a part of the blade portion is provided with a resin second section and the second section is bonded to an aluminum first section. The turbocharger impeller includes the aluminum first section and the resin second section.Type: GrantFiled: July 27, 2017Date of Patent: April 20, 2021Assignee: IHI CorporationInventors: Kuniaki Iizuka, Takashi Yoshida, Yuji Sasaki, Tatsumi Inomata, Takuya Ozasa, Tomohisa Okada, Ryosuke Yumoto, Kouta Kimachi
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Patent number: 10975878Abstract: Provided is a rotary machine including a rotating resinous impeller, a rotary shaft penetrating the impeller, and a fastening portion screwed to the rotary shaft, in which the rotary shaft includes a penetrating shaft portion facing an inner peripheral surface of the impeller, a tip shaft portion screwed to the fastening portion, and a fastening reception portion sandwiching the impeller between the fastening reception portion and the fastening portion, the penetrating shaft portion has a non-circular portion and an outline of a cross section of the non-circular portion orthogonal to a rotational axis deviates from a perfect circle about the rotational axis, and the impeller includes a connecting portion engaging with the non-circular portion.Type: GrantFiled: February 20, 2017Date of Patent: April 13, 2021Assignee: IHI CorporationInventors: Takuya Ozasa, Ryosuke Yumoto
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Publication number: 20210102551Abstract: This electric compressor includes a rotation shaft including a first end and a second end, a compressor impeller which is mounted on the first end of the rotation shaft and includes a back surface facing the second end, a motor disposed between the first end and the second end of the rotation shaft, a wall portion which separates an impeller space and a motor space from each other and includes a reference wall surface having a shape along the back surface of the compressor impeller, and a bypass hole which is formed in the wall portion to connect the impeller space to the motor space and includes a first opening which opens to the impeller space. In the wall portion, a recessed portion which is disposed around the first opening of the bypass hole and recessed from the reference wall surface is formed.Type: ApplicationFiled: December 17, 2020Publication date: April 8, 2021Inventors: Kuniaki IIZUKA, Yuji SASAKI, Tatsumi INOMATA, Ryosuke YUMOTO, Kai IIJIMA, Tatsuya FUKUI, Hikaru SUGIURA, Yoshihito KATSU, Takashi YOSHIDA, Takashi MORI
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Patent number: 10941788Abstract: An electric compressor includes a rotation shaft, a compressor impeller, a rotor portion, a stator portion, and a motor housing. The motor housing includes an inner housing which includes a first cylindrical portion surrounding and holding the stator portion and an outer housing which includes a second cylindrical portion surrounding and holding the first cylindrical portion of the inner housing. An outer peripheral surface of the stator portion is in contact with an inner peripheral surface of the first cylindrical portion of the inner housing. An outer peripheral surface of the first cylindrical portion is provided with a first groove portion disposed to turn around an axis of the rotation shaft by one turn or more and the first groove portion includes a spiral groove portion.Type: GrantFiled: January 24, 2018Date of Patent: March 9, 2021Assignee: IHI CorporationInventors: Kuniaki Iizuka, Takashi Yoshida, Yuji Sasaki, Tatsumi Inomata, Takuya Ozasa, Ryosuke Yumoto, Takashi Mori
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Publication number: 20210054851Abstract: A turbocharger impeller includes: a cylindrical boss portion disposed around a rotary axis; a hub portion connected to the boss portion and extends in a radial direction of the rotary axis; and a blade portion protruding from the boss portion and the hub portion toward a tip end side in the direction of the rotary axis and the radial direction. At least a part of an outer peripheral part of the hub portion in the radial direction or a part of the blade portion is provided with a resin second section and the second section is bonded to an aluminum first section. The turbocharger impeller includes the aluminum first section and the resin second section.Type: ApplicationFiled: July 27, 2017Publication date: February 25, 2021Applicant: IHI CorporationInventors: Kuniaki IIZUKA, Takashi YOSHIDA, Yuji SASAKI, Tatsumi INOMATA, Takuya OZASA, Tomohisa OKADA, Ryosuke YUMOTO, Kouta KIMACHI
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Patent number: 10865687Abstract: An exhaust gas energy recovery device includes a power generation device driven by a turbine configured to rotate by an exhaust gas, a switching element connected to the power generation device, a first terminal connected to the power generation device via the switching element and for being connected to a first power storage device, and a second terminal connected to the power generation device and for being connected to a second power storage device, in which a terminal voltage of the first power storage device is lower than a terminal voltage of the second power storage device, and the switching element switches a destination to be charged by the power generation device to either the first power storage device or the second power storage device on the basis of magnitude of a direct current voltage output from the power generation device.Type: GrantFiled: November 7, 2017Date of Patent: December 15, 2020Assignee: IHI CorporationInventors: Yuji Sasaki, Takashi Yoshida, Tatsumi Inomata, Kuniaki Iizuka, Takuya Ozasa, Ryosuke Yumoto
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Patent number: 10724426Abstract: An electric turbocharger includes an electric motor which rotationally drives a rotating blade, a motor housing which accommodates the electric motor therein, a controller which is disposed outside the motor housing and controls the driving of the electric motor, and a power supply mechanism which supplies a current from the controller to the electric motor through a through-hole communicating the inside and the outside of the motor housing, in which the power supply mechanism includes a rod which is hermetically sealed while being inserted through the through-hole, a connector which is connected to at least one end of the rod, and a busbar which is connected to the connector, and in which the connector absorbs a relative positional displacement of the rod with respect to the connector.Type: GrantFiled: May 16, 2017Date of Patent: July 28, 2020Assignee: IHI CorporationInventors: Kuniaki Iizuka, Takashi Yoshida, Yuji Sasaki, Tatsumi Inomata, Takuya Ozasa, Tomohisa Okada, Ryosuke Yumoto, Kouta Kimachi
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Patent number: 10662963Abstract: A rotary machine is provided with: a bearing that supports a rotary shaft of an impeller; a bearing support part that supports an outer circumference of the bearing; a key groove that is formed in the bearing and the bearing support part and extends along a rotary shaft line direction of the rotary shaft; and a key member that is inserted into the key groove. The bearing support part is provided with an outer regulating part that can contact one end part of the key member inside the key groove. An outer ring of the bearing is provided with an inner regulating part that can contact another end part of the key member inside the key groove. A distance between the outer regulating part and the inner regulating part is longer than a length of the key member in the rotary shaft line direction.Type: GrantFiled: August 25, 2017Date of Patent: May 26, 2020Assignee: IHI CorporationInventors: Kuniaki Iizuka, Takashi Yoshida, Yuji Sasaki, Tatsumi Inomata, Takuya Ozasa, Ryosuke Yumoto, Takashi Mori
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Publication number: 20200040903Abstract: A bearing structure of the present disclosure includes a rotation shaft, a bearing that is attached in a housing to support the rotation shaft with respect to the housing and includes an inner race through which the rotation shaft is inserted and an outer race which includes an annular groove portion formed on an outer peripheral surface facing an inner wall surface of the housing, and an O-ring which is disposed on the groove portion of the outer race of the bearing, protrudes outward in a radial direction in relation to the outer peripheral surface, and comes into contact with the inner wall surface of the housing. A clearance is formed between the inner wall surface of the housing and the outer peripheral surface of the bearing. The clearance is larger than a radial displacement amount of the O-ring.Type: ApplicationFiled: March 26, 2018Publication date: February 6, 2020Applicant: IHI CorporationInventors: Kuniaki IIZUKA, Takashi YOSHIDA, Tatsumi INOMATA, Takuya OZASA, Kai llJIMA, Ryosuke YUMOTO, Takashi MORI, Yuji SASAKI