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公开(公告)号：US11976824B2
公开(公告)日：2024-05-07
申请号：US17603724
申请日：2019-06-13
CPC分类号： F24F1/0022 , F04D29/4226 , F04D29/44
摘要： A centrifugal fan includes: an impeller having a back plate; and a scroll casing including a peripheral wall having a volute shape, a first side wall facing a virtual extension of the back plate and an inner end portion of the volute shape of the scroll casing, an expanded portion, and a first edge end portion being an end of a first edge defining the discharge port, of the first side wall, are arranged in a named order in the rotation direction, the first edge end portion being farther from the rotation shaft than an other end of the first edge and distance L1≥distance LM>distance LS is satisfied where LS is a distance between the first side wall at the inner end portion of the volute shape and the virtual extension of the back plate, LM is a distance between the first side wall at the expanded portion and the virtual extension of the back plate, the expanded portion being a portion at which the distance between the first side wall and the virtual extension of the back plate is larger than LS, and L1 is a distance between the first side wall at the first edge end portion and the virtual extension of the back plate.
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公开(公告)号：US11885339B2
公开(公告)日：2024-01-30
申请号：US17288319
申请日：2018-10-30
发明人： Takuya Teramoto , Hiroyasu Hayashi , Atsushi Kono , Ryo Horie , Kazuya Michikami , Takahiro Yamatani , Hiroshi Tsutsumi
CPC分类号： F04D17/10 , F04D17/162 , F04D29/281 , F04D29/424 , F04D29/5826 , F24F1/0022 , F05D2250/52
摘要： 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.
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公开(公告)号：USD963153S1
公开(公告)日：2022-09-06
申请号：US29757251
申请日：2020-11-04
设计人： Ryo Horie , Takuya Teramoto , Takahiro Iinuma
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公开(公告)号：USD944966S1
公开(公告)日：2022-03-01
申请号：US29694038
申请日：2019-06-06
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公开(公告)号：US11808270B2
公开(公告)日：2023-11-07
申请号：US17438553
申请日：2019-04-25
发明人： Takuya Teramoto , Hiroyasu Hayashi , Ryo Horie , Kazuya Michikami , Takahiro Yamatani , Hiroshi Tsutsumi
CPC分类号： F04D17/162 , F04D29/282 , F04D29/30 , F04D29/424 , F04D29/44 , F04D29/60 , F04D29/68
摘要： 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. In the first region and the second region, a ratio of the turbo blade portion in the radial direction is larger than a ratio of the sirocco blade portion in the radial direction.
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6.发明授权公开(公告)号：US11274678B2
公开(公告)日：2022-03-15
申请号：US17042620
申请日：2018-05-21
发明人： Takuya Teramoto , Ryo Horie , Takahiro Yamatani , Kazuya Michikami , Hiroshi Tsutsumi , Hiroyasu Hayashi
IPC分类号： F04D29/42 , F04D29/44 , F04D29/66 , F24F1/0022
摘要： 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.
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公开(公告)号：USD938570S1
公开(公告)日：2021-12-14
申请号：US29694036
申请日：2019-06-06
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8.发明授权公开(公告)号：US11592032B2
公开(公告)日：2023-02-28
申请号：US16755732
申请日：2017-10-31
发明人： Takuya Teramoto , Ryo Horie , Takahiro Yamatani , Kazuya Michikami , Hiroshi Tsutsumi , Hiroyasu Hayashi
摘要： 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.
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公开(公告)号：USD962418S1
公开(公告)日：2022-08-30
申请号：US29808193
申请日：2021-09-17
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公开(公告)号：USD961756S1
公开(公告)日：2022-08-23
申请号：US29802949
申请日：2021-08-09
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