Patents by Inventor Kazuya MICHIKAMI
Kazuya MICHIKAMI 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: 11885339Abstract: A turbo fan includes a main plate and a plurality of blade portions. The plurality of blade portions include a plurality of first blade portions and a plurality of second blade portions. In a case where, in each of the plurality of first blade portions, a length of a virtual straight line connecting a first inner peripheral end part and a first outer peripheral end part is defined as a first chord length, and in each of the plurality of second blade portions, a length of a virtual straight line connecting a second inner peripheral end part and a second outer peripheral end part is defined as a second chord length, the first chord length and the second chord length are not equal to each other at positions separated by a same distance from the main plate in the axial direction of the rotary shaft.Type: GrantFiled: October 30, 2018Date of Patent: January 30, 2024Assignee: Mitsubishi Electric CorporationInventors: Takuya Teramoto, Hiroyasu Hayashi, Atsushi Kono, Ryo Horie, Kazuya Michikami, Takahiro Yamatani, Hiroshi Tsutsumi
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Publication number: 20240026896Abstract: A centrifugal air-sending device has blades that each have a vane length in a first region that is greater than a vane length in a second region and have a portion at which a proportion for which a turbo vane portion accounts is higher in a radial direction than a proportion for which a sirocco vane portion accounts in the first region and the second region. The blades that are located closer to an outer circumference than is an inner circumferential side end portion of a bell mouth that is located closest to an inner circumference in the radial direction is defined as a blade outer circumferential portion that is formed such that the proportion for which the sirocco vane portion accounts is higher in the radial direction than or equal to the proportion for which the turbo vane portion accounts in the first region and the second region.Type: ApplicationFiled: October 22, 2020Publication date: January 25, 2024Inventors: Takuya TERAMOTO, Hiroyasu HAYASHI, Ryo HORIE, Yoshitaka AKARI, Takashi YAMAGUCHI, Kazuya MICHIKAMI, Takahiro YAMATANI
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Publication number: 20240011500Abstract: A centrifugal air blower includes a fan; and a scroll casing. The scroll casing includes: a sidewall covering the fan from an axial direction of a rotation axis, the sidewall having a suction opening for sucking air; a discharge opening; a tongue portion for guiding the airflow to the discharge opening; a peripheral wall surrounding the fan from a radial direction of the rotation axis; and a bell mouth formed along the suction opening of the sidewall. The bell mouth includes upstream and downstream ends, with the upstream end being an end portion on an upstream side in a direction of flow of the air passing through the suction opening, and the downstream end being an end portion on a downstream side in the direction of flow of the air.Type: ApplicationFiled: August 22, 2023Publication date: January 11, 2024Inventors: Takuya TERAMOTO, Ryo HORIE, Takahiro YAMATANI, Kazuya MICHIKAMI, Hiroshi TSUTSUMI, Keijiro YAMAGUCHI
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Publication number: 20230400036Abstract: A centrifugal air blower includes a fan; and a scroll casing. The scroll casing includes: a sidewall covering the fan from an axial direction of a rotation axis, the sidewall having a suction opening for sucking air; a discharge opening; a tongue portion for guiding the airflow to the discharge opening; a peripheral wall surrounding the fan from a radial direction of the rotation axis; and a bell mouth formed along the suction opening of the sidewall. The bell mouth includes upstream and downstream ends, with the upstream end being an end portion on an upstream side in a direction of flow of the air passing through the suction opening, and the downstream end being an end portion on a downstream side in the direction of flow of the air.Type: ApplicationFiled: August 22, 2023Publication date: December 14, 2023Inventors: Takuya TERAMOTO, Ryo HORIE, Takahiro YAMATANI, Kazuya MICHIKAMI, Hiroshi TSUTSUMI, Keijiro YAMAGUCHI
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Publication number: 20230392607Abstract: A centrifugal air blower includes a fan; and a scroll casing. The scroll casing includes: a sidewall covering the fan from an axial direction of a rotation axis, the sidewall having a suction opening for sucking air; a discharge opening; a tongue portion for guiding the airflow to the discharge opening; a peripheral wall surrounding the fan from a radial direction of the rotation axis; and a bell mouth formed along the suction opening of the sidewall. The bell mouth includes upstream and downstream ends, with the upstream end being an end portion on an upstream side in a direction of flow of the air passing through the suction opening, and the downstream end being an end portion on a downstream side in the direction of flow of the air.Type: ApplicationFiled: August 22, 2023Publication date: December 7, 2023Inventors: Takuya TERAMOTO, Ryo HORIE, Takahiro YAMATANI, Kazuya MICHIKAMI, Hiroshi TSUTSUMI, Keijiro YAMAGUCHI
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Patent number: 11808270Abstract: An impeller includes a backing plate, a rim disposed so as to face the backing plate, and a plurality of blades arranged in a circumferential direction around a virtual rotation axis of the backing plate. Each of the plurality of blades has an inner circumferential end, an outer circumferential end a sirocco blade portion being forward-swept and including the outer circumferential end and having a blade outlet angle of larger than 90 degrees, and a turbo blade portion being swept-back and including the inner circumferential end, a first region located closer to the backing plate than a middle point in an axial direction of the rotation axis, and a second region located closer to the rim than the first region. Each of the plurality of blades is formed such that a blade length in the first region is longer than a blade length in the second region.Type: GrantFiled: April 25, 2019Date of Patent: November 7, 2023Assignee: Mitsubishi Electric CorporationInventors: Takuya Teramoto, Hiroyasu Hayashi, Ryo Horie, Kazuya Michikami, Takahiro Yamatani, Hiroshi Tsutsumi
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Publication number: 20230323892Abstract: A centrifugal air-sending device has blades that each have a vane length in a first region that is greater than a vane length in a second region, and are each formed such that a proportion for which a turbo vane portion accounts is higher in a radial direction than a proportion for which a sirocco vane portion accounts in the first region and the second region. The blades that are located closer to an outer circumference than is a blade inner diameter of inner circumferential ends of the blades at end portions of the blades that are close to a side plate in an axial direction are defined as a blade outer circumferential portion that is formed such that a vane thickness of each of the blades in decreased in the radial direction from an inner circumference toward the outer circumference.Type: ApplicationFiled: October 22, 2020Publication date: October 12, 2023Inventors: Takuya TERAMOTO, Hiroyasu HAYASHI, Ryo HORIE, Yoshitaka AKARI, Takashi YAMAGUCHI, Kazuya MICHIKAMI, Takahiro YAMATANI, Masahiko TAKAGI, Kazuki WATANABE, Hidetoshi SEKI
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Publication number: 20230243365Abstract: A multi-blade centrifugal air-sending device includes a fan including a back plate having a disk shape, a plurality of blades arranged at a peripheral portion of the back plate in a circumferential direction, and a rim having an annular shape and coupling the plurality of blades to each other, the plurality of blades being connected at respective first end portions on one side to the back plate, the rim being provided at respective second end portions of the plurality of blades on a side opposite to the one side where the respective first end portions are present; and a scroll casing having a spiral shape and including a facing side wall where an air inlet is provided and a peripheral wall, the scroll casing housing the fan such that the side wall faces the respective second end portions of the plurality of blades, the scroll casing being configured such that air is introduced through the air inlet and blown out to the outer peripheral side.Type: ApplicationFiled: October 23, 2020Publication date: August 3, 2023Inventors: Hiroyasu HAYASHI, Takuya TERAMOTO, Ryo HORIE, Takashi YAMAGUCHI, Tomohiro NAGANO, Kazuya MICHIKAMI, Takahiro YAMATANI
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Publication number: 20230151821Abstract: An air conditioning apparatus includes a centrifugal fan and a heat exchanger disposed in a position facing a discharge port of the centrifugal fan. The centrifugal fan includes: a fan, blades; and a scroll casing housing the fan, the scroll casing including a discharge portion, and a scroll portion including a side wall, a circumferential wall, and a tongue portion.Type: ApplicationFiled: January 18, 2023Publication date: May 18, 2023Inventors: Takuya TERAMOTO, Ryo HORIE, Takahiro YAMATANI, Kazuya MICHIKAMI, Hiroshi TSUTSUMI, Hiroyasu HAYASHI
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Publication number: 20230135727Abstract: An impeller connected to a motor having a drive shaft includes a back plate having a boss having a shaft hole through which the drive shaft is inserted, a ring-shaped rim provided to face the back plate, and a plurality of blades connected to the back plate and the rim and arranged along a circumferential direction of the back plate about the rotation shaft. The back plate includes a first surface portion on which the plurality of blades are formed, a second surface portion provided at a region between the boss and the first surface portion and depressed from the first surface portion in an axial direction of the rotation shaft, and a plurality of projections provided at the second surface portion and extending in the axial direction.Type: ApplicationFiled: March 19, 2020Publication date: May 4, 2023Inventors: Takuya TERAMOTO, Hiroyasu HAYASHI, Ryo HORIE, Takashi YAMAGUCHI, Tomohiro NAGANO, Kazuya MICHIKAMI, Takahiro YAMATANI, Hiroshi TSUTSUMI
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Publication number: 20230130474Abstract: An impeller includes: a main plate to be rotated; an annular side plate having a suction port for air; and blades in a circumferential direction. Each of the blades has: an inner peripheral end; an outer peripheral end; a sirocco blade portion that includes the outer peripheral end, and forms a forward-swept blade; and a turbo blade portion that includes the inner peripheral end and forms a swept-back blade. The blade has an end portion facing the suction port and a base portion connected to the main plate, and the end portion has a smaller thickness than that of the base portion in the sirocco blade portion. The end portion of the blade has a blade shape, and in the end portion having the blade shape, a first blade thickness of an inner circumferential side of the impeller is greater than a second blade thickness of the outer circumferential side.Type: ApplicationFiled: October 22, 2020Publication date: April 27, 2023Inventors: Takuya TERAMOTO, Hiroyasu HAYASHI, Ryo HORIE, Takashi YAMAGUCHI, Tomohiro NAGANO, Kazuya MICHIKAMI, Takahiro YAMATANI
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Publication number: 20230106624Abstract: An air-conditioning apparatus includes a refrigerant circuit including a compressor, a strainer, and an expansion valve, and a controller configured to control the expansion valve in the refrigerant circuit. In the air-conditioning apparatus, in a case where the expansion valve is closed, the controller performs control to close the expansion valve after opening the expansion valve to cause an opening port diameter of the expansion valve to be greater than a mesh diameter of the strainer.Type: ApplicationFiled: May 25, 2020Publication date: April 6, 2023Inventor: Kazuya MICHIKAMI
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Patent number: 11592032Abstract: A centrifugal fan includes: a fan, blades; and a scroll casing housing the fan, the scroll casing including a discharge portion, and a scroll portion including a side wall, a circumferential wall, and a tongue portion. In the circumferential wall, at a first end between the circumferential wall and the tongue portion, and at a second end between the circumferential wall and the discharge portion, a distance between an axis of the rotational shaft and the circumferential wall is equal to a distance between the axis of the rotational shaft and a standard circumferential wall, and is greater than or equal to the distance between the first end and the second end of the circumferential wall, the circumferential wall including a plurality of extended portions between the first end and the second end of the circumferential wall.Type: GrantFiled: October 31, 2017Date of Patent: February 28, 2023Assignee: Mitsubishi Electric CorporationInventors: Takuya Teramoto, Ryo Horie, Takahiro Yamatani, Kazuya Michikami, Hiroshi Tsutsumi, Hiroyasu Hayashi
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Patent number: 11566635Abstract: A centrifugal air blower comprises a fan (2); and a scroll casing (4). The scroll casing includes: a sidewall (4c) covering the fan (2) from an axial direction of a rotation axis on which the fan (2) rotates, the side wall having a suction opening for sucking air; a discharge opening (41) for discharging an airflow generated by the fan (2); a tongue portion (4b) for guiding the airflow to the discharge opening (41); a peripheral wall (4a) surrounding the fan (2) from a radial direction of the rotation axis; and a bell mouth (3) formed along the suction opening (5) of the sidewall (4c). The bell mouth (3) includes an upstream end (3a) and a downstream end (3b), the upstream end being an end portion on an upstream side in a direction of flow of the air passing through the suction opening (5), the downstream end being an end portion on a downstream side in the direction of flow of the air.Type: GrantFiled: December 15, 2021Date of Patent: January 31, 2023Assignee: Mitsubishi Electric CorporationInventors: Takuya Teramoto, Ryo Horie, Takahiro Yamatani, Kazuya Michikami, Hiroshi Tsutsumi, Keijiro Yamaguchi
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Publication number: 20220412372Abstract: A centrifugal air blower comprises a fan; and a scroll casing. The scroll casing includes: a sidewall covering the fan from an axial direction of a rotation axis on which the fan rotates, the side wall having a suction opening for sucking air; a discharge opening for discharging an airflow generated by the fan; a tongue portion for guiding the airflow to the discharge opening; a peripheral wall surrounding the fan from a radial direction of the rotation axis; and a bell mouth formed along the suction opening of the sidewall. The bell mouth includes an upstream end and a downstream end, the upstream end being an end portion on an upstream side in a direction of flow of the air passing through the suction opening, the downstream end being an end portion on a downstream side in the direction of flow of the air.Type: ApplicationFiled: August 30, 2022Publication date: December 29, 2022Inventors: Takuya TERAMOTO, Ryo HORIE, Takahiro YAMATANI, Kazuya MICHIKAMI, Hiroshi TSUTSUMI, Keijiro YAMAGUCHI
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Publication number: 20220372990Abstract: An impeller includes a main plate, an annular side plate and blades. The blades each have: an inner circumferential end; an outer circumferential end; a sirocco blade portion formed as a forward-swept blade portion, and having an outlet angle that is greater than 90 degrees; and a turbo blade portion formed as a swept-back blade portion and including the inner circumferential end. The blades include a first blade portion and a second blade portion that are provided on respective sides of the main plate. The impeller including a region in which a first inter-blade distance is greater than a second inter-blade distance, where an inlet-blade distance is a distance between any adjacent two of the blades in the circumferential direction, the first inter-blade distance is the inter-blade distance of the first blade portion, and the second inter-blade distance is the inter-blade distance of the second blade portion.Type: ApplicationFiled: December 23, 2019Publication date: November 24, 2022Inventors: Takuya TERAMOTO, Hiroyasu HAYASHI, Ryo HORIE, Takashi YAMAGUCHI, Tomohiro NAGANO, Kazuya MICHIKAMI, Takahiro YAMATANI, Hiroshi TSUTSUMI
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Publication number: 20220145893Abstract: An impeller includes a backing plate, a rim disposed so as to face the backing plate, and a plurality of blades arranged in a circumferential direction around a virtual rotation axis of the backing plate. Each of the plurality of blades has an inner circumferential end, an outer circumferential end a sirocco blade portion being forward-swept and including the outer circumferential end and having a blade outlet angle of larger than 90 degrees, and a turbo blade portion being swept-back and including the inner circumferential end, a first region located closer to the backing plate than a middle point in an axial direction of the rotation axis, and a second region located closer to the rim than the first region. Each of the plurality of blades is formed such that a blade length in the first region is longer than a blade length in the second region.Type: ApplicationFiled: April 25, 2019Publication date: May 12, 2022Inventors: Takuya TERAMOTO, Hiroyasu HAYASHI, Ryo HORIE, Kazuya MICHIKAMI, Takahiro YAMATANI, Hiroshi TSUTSUMI
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Publication number: 20220106968Abstract: A centrifugal air blower comprises a fan (2); and a scroll casing (4). The scroll casing includes: a sidewall (4c) covering the fan (2) from an axial direction of a rotation axis on which the fan (2) rotates, the side wall having a suction opening for sucking air; a discharge opening (41) for discharging an airflow generated by the fan (2); a tongue portion (4b) for guiding the airflow to the discharge opening (41); a peripheral wall (4a) surrounding the fan (2) from a radial direction of the rotation axis; and a bell mouth (3) formed along the suction opening (5) of the sidewall (4c). The bell mouth (3) includes an upstream end (3a) and a downstream end (3b), the upstream end being an end portion on an upstream side in a direction of flow of the air passing through the suction opening (5), the downstream end being an end portion on a downstream side in the direction of flow of the air.Type: ApplicationFiled: December 15, 2021Publication date: April 7, 2022Inventors: Takuya TERAMOTO, Ryo HORIE, Takahiro YAMATANI, Kazuya MICHIKAMI, Hiroshi TSUTSUMI, Keijiro YAMAGUCHI
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Patent number: 11274678Abstract: A centrifugal blower includes a fan including a main plate having a disk-shape, and a plurality of blades, and a scroll casing configured to accommodate the fan. The scroll casing includes a discharge portion and a scroll portion including a side wall, a circumferential wall, and a tongue portion. The circumferential wall includes a curved circumferential wall and a flat circumferential wall. In comparison with a centrifugal blower including a standard circumferential wall having a logarithmic spiral shape in cross-section perpendicular to a rotational shaft of the fan, in the curved circumferential wall, at a first end being a boundary between the circumferential wall and the tongue portion and at a second end being a boundary between the circumferential wall and the discharge portion, a distance L1 between an axis of the rotational shaft and the circumferential wall is equal to a distance L2 between the axis of the rotational shaft and the standard circumferential wall.Type: GrantFiled: May 21, 2018Date of Patent: March 15, 2022Assignee: Mitsubishi Electric CorporationInventors: Takuya Teramoto, Ryo Horie, Takahiro Yamatani, Kazuya Michikami, Hiroshi Tsutsumi, Hiroyasu Hayashi
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Patent number: D962418Type: GrantFiled: September 17, 2021Date of Patent: August 30, 2022Assignee: Mitsubishi Electric CorporationInventors: Ryo Horie, Takahiro Yamatani, Kazuya Michikami, Hiroshi Tsutsumi, Takuya Teramoto, Hiroyasu Hayashi