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公开(公告)号：US20240247661A1
公开(公告)日：2024-07-25
申请号：US18623912
申请日：2024-04-01
Applicant: DENSO CORPORATION
Inventor： Mari FUKADA , Shuzo Oda , Jun Yamaoka
CPC classification number: F04D29/281 , F04D29/388 , F04D29/66
Abstract: A centrifugal blower includes a plurality of blades, a shroud, a main plate and a tubular portion. An air flow passage is formed between each adjacent two of the blades. When the blades are rotated, air, which is suctioned from one axial side into a suction port is conducted through the air flow passage and is radially outwardly discharged. The shroud has a cover region, which faces another axial side and is shaped in a convex arcuate form. An axial end part of the tubular portion, which faces the one axial side, has an end surface. The end surface and a second virtual line are parallel to each other, or a distance, which is measured between the end surface and the second virtual line in the axial direction, is progressively increased from a radially inner part to a radially outer part of the end surface.
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公开(公告)号：US11542952B2
公开(公告)日：2023-01-03
申请号：US17142949
申请日：2021-01-06
Applicant: DENSO CORPORATION
Inventor： Yuya Suzuki , Sho Kosaka , Shuzo Oda , Shinichiro Hirai
IPC: F04D29/28
Abstract: A centrifugal blower includes a centrifugal fan and a separation cylinder. The centrifugal fan has a separation plate. The separation cylinder is disposed inward of the blades in the radial direction of the centrifugal fan. The separation plate has an inner end surface extending from the one side to the other side in the axial direction at a position of an inner end in the radial direction. The separation cylinder has a separation cylinder end surface extending from the one side to the other side in the axial direction at a position of an end on the other side in the axial direction. A height of one of the separation cylinder end surface and the inner end surface in the axial direction is larger than a height of the other of the separation cylinder end surface and the inner end surface in the axial direction.
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公开(公告)号：US11499568B2
公开(公告)日：2022-11-15
申请号：US17323065
申请日：2021-05-18
Applicant: DENSO CORPORATION
Inventor： Sho Kosaka , Shuzo Oda
Abstract: A centrifugal fan includes first blades and second blades connected via a separation plate. A side plate supports the first blades located on one side in an axial direction, and a main plate supports the second blades on the other side in the axial direction. The separation plate has an inner diameter larger than or equal to an outer diameter of the main plate and larger than or equal to a largest inner diameter of the second blade. The separation plate has an outer diameter smaller than or equal to an inner diameter of the side plate and smaller than or equal to a smallest outer diameter of the first blade.
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公开(公告)号：US11448077B2
公开(公告)日：2022-09-20
申请号：US16565623
申请日：2019-09-10
Applicant: DENSO CORPORATION
Inventor： Fumiya Ishii , Shuzo Oda
Abstract: A method for manufacturing a turbo fan unit includes a step for preparing multiple fan blades and an other-side side plate, and a step for connecting each of the multiple fan blades to the other-side side plate by a welding process. In the preparing step, one of the fan blade and the side plate is prepared, in which a connecting-surface forming portion having a connecting surface and a welding projection protruded from the connecting surface is formed. The connecting surface connects one of the fan blade and the side plate to the other one of the fan blade and the side plate. In the connecting step, the welding projection is melted down and the connecting surface is connected to an opposing surface, which is the surface of one of the fan blade and the side plate and which is opposing to the connecting surface.
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公开(公告)号：US11421706B2
公开(公告)日：2022-08-23
申请号：US17129652
申请日：2020-12-21
Applicant: DENSO CORPORATION
Inventor： Yuya Suzuki , Sho Kosaka , Shuzo Oda , Shouichi Imahigashi
Abstract: A centrifugal blower includes: a centrifugal fan having plural blades arranged around a fan axis and a separation plate to blow out air in a radial direction after being sucked from one side in an axial direction; a fan casing housing the centrifugal fan; a partition plate that defines a first air passage and a second air passage arranged on the other side of the first air passage in the axial direction; and a separation cylinder arranged inside the plural blades in the radial direction. The separation cylinder expands in the radial direction as extending toward the other side in the axial direction, and is shaped to extend outward in the radial direction obliquely to the axial direction at the other end position of the separation cylinder positioned at the other end in the axial direction.
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Patent Agency Ranking
公开(公告)号：US09328806B2
公开(公告)日：2016-05-03
申请号：US14571796
申请日：2014-12-16
Applicant: DENSO CORPORATION
Inventor： Hitoshi Noguchi , Hiroshi Okada , Shuzo Oda , Tomoaki Nakano , Yoshihiro Yamashita , Yousuke Yamamoto , Kazuhisa Hara
CPC classification number: F16H7/1281 , B60W20/00 , F02N11/04 , F02N15/02 , F02N15/08 , F16H2007/0861 , F16H2007/0885 , Y10S903/909 , Y10T477/23
Abstract: A power transmission system transmits power from a drive shaft of an internal combustion engine to a first and a second auxiliary device through a belt. An auto-tensioner extends or contracts to change the tension of the belt. A controller rotates the first auxiliary device in a reverse direction to loosen the belt to cause the auto-tensioner to extend to increase the tension of the belt and calculates a reversing timing when the drive shaft will be reversed as a result of increasing of the tension of the belt. The controller inhibits the tensioner body from contracting immediately before or when the reversing time is reached to keep the tension of the belt at an increased degree, thereby eliminating the slippage of the belt on each pulley without having to finely control the operation of the first auxiliary device when the internal combustion engine is started.
Abstract translation: 动力传动系统通过皮带将动力从内燃机的驱动轴传递到第一和第二辅助装置。 自动张紧器延伸或收缩以改变皮带的张力。 控制器使第一辅助装置沿相反方向旋转以松开皮带，使自动张紧器延伸以增加皮带的张力，并计算当驱动轴由于张力增加而反转时的换向时机 的皮带。 控制器在紧急反转时间之前或之后阻止张紧器体收缩，以保持皮带的张力增加，从而消除皮带在每个滑轮上的滑动，而不必精细地控制第一辅助件的操作 内燃机启动时的装置。
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公开(公告)号：US11988226B2
公开(公告)日：2024-05-21
申请号：US17317957
申请日：2021-05-12
Applicant: DENSO CORPORATION
Inventor： Sho Kosaka , Shuzo Oda
CPC classification number: F04D29/4213 , F04D17/10 , F04D25/08 , F04D29/4226 , F04D29/441 , F04D29/703 , B60H2001/00085 , B60H1/00471 , F04D17/162 , F04D29/424
Abstract: A centrifugal blower includes a box, a filter, an impeller, a scroll casing, a bell mouth, a partition wall, and a separation tube. The scroll casing defines an air passage gradually increasing from a nose portion in a circumferential direction. The partition wall divides the air passage into an upper passage and a lower passage. The separation tube includes an air introducing plate to partially cover the impeller and defining an air inlet portion and a tubular portion that extends from the air inlet portion through the impeller. On a virtual plane parallel to a rotational axis of the impeller, an outer edge of the air introducing plate extends and a passage between the filter and the upper passage is divided by the separation tube into a first passage cross-section closer to the nose portion and a second passage cross-section that is smaller than the first passage cross-section.
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公开(公告)号：US11286945B2
公开(公告)日：2022-03-29
申请号：US15777041
申请日：2016-10-20
Applicant: DENSO CORPORATION
Inventor： Fumiya Ishii , Shuzo Oda
Abstract: A fan main body member of a turbofan has multiple blades disposed around a fan axial center, a shroud ring which is coupled to each of the multiple blades, and a fan hub portion which is coupled to each of the multiple blades on a side opposite from the shroud ring. An other end side plate of the turbofan is fitted to the radially outer side of the fan hub portion and joined to an other side blade end portions of each of the multiple blades. In addition, an outer diameter of the fan hub portion is smaller than an inner diameter of the shroud ring. In addition, the multiple blades, the shroud ring, and the fan hub portion are integrally formed.
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公开(公告)号：US11332052B2
公开(公告)日：2022-05-17
申请号：US16562117
申请日：2019-09-05
Applicant: DENSO CORPORATION
Inventor： Fumiya Ishii , Shuzo Oda , Shouichi Imahigashi
Abstract: A centrifugal blower device includes a rotating shaft, a turbo fan unit and a casing. A shroud ring of the turbo fan unit and a cover portion of the casing form a gap between them. The gap includes a radial gap formed between the cover portion and the shroud ring in a radial direction and an axial gap formed between the cover portion and the shroud ring in an axial direction. The radial gap is located at a position outside of a shroud-side inner peripheral end in the radial direction. The axial gap is located at a position inside of the radial direction in the radial direction. A minimum gap dimension of the radial gap is smaller than a minimum gap dimension of the axial gap. A shortest distance between the shroud-side inner peripheral end and the cover portion is larger than the minimum gap dimension of the radial gap.
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公开(公告)号：US11085459B2
公开(公告)日：2021-08-10
申请号：US16437181
申请日：2019-06-11
Applicant: DENSO CORPORATION
Inventor： Fumiya Ishii , Shuzo Oda , Shouichi Imahigashi
Abstract: A centrifugal blower includes a centrifugal fan and a case that houses the centrifugal fan. A blade of the centrifugal fan has an intake side edge portion extending from a shroud inward in a radial direction. The intake side edge portion has a negative pressure side inclined portion inclined to a negative pressure surface side of the blade with respect to an axial direction. The negative pressure side inclined portion has an inclination length in the axial direction, and the inclination length is larger in a reverse flow portion of the intake side edge portion close to the shroud than in a radially innermost portion of the intake side edge portion located at an innermost side in the radial direction.
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