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公开(公告)号：US20240159238A1
公开(公告)日：2024-05-16
申请号：US18549418
申请日：2021-05-07
发明人： Atsushi KONO , Takuya TERAMOTO , Yuki UGAJIN , Koji YAMAGUCHI , Tetsuo YAMASHITA , Takashi IKEDA
CPC分类号： F04D17/04 , F04D29/324
摘要： An air sending device is provided with a cross flow fan including an impeller in which a plurality of blades is arranged annularly. Each of the blades includes a pressure surface, a suction surface, an inner peripheral end face, and an outer peripheral end face. The pressure surface of the blade satisfies the following relationship: a curvature of a second pressure-surface side curved surface>a curvature of a third pressure-surface side curved surface>a curvature of a first pressure-surface side curved surface. When a first, a second, and a third pressure-surface side area of a surface of part of a pressure surface side of the blade are projected on a chord line connecting the inner and outer peripheral end of the blade, a length of the third pressure-surface side area>a length of the first pressure-surface side area>a length of the second pressure-surface side area.
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公开(公告)号：US20230130474A1
公开(公告)日：2023-04-27
申请号：US17915389
申请日：2020-10-22
发明人： Takuya TERAMOTO , Hiroyasu HAYASHI , Ryo HORIE , Takashi YAMAGUCHI , Tomohiro NAGANO , Kazuya MICHIKAMI , Takahiro YAMATANI
IPC分类号： F04D29/28 , F24F1/0022 , F04D17/16 , F04D25/06
摘要： 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.
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公开(公告)号：US20200166048A1
公开(公告)日：2020-05-28
申请号：US16619692
申请日：2017-08-09
发明人： Takuya TERAMOTO , Takahide TADOKORO , Katsuyuki YAMAMOTO , Hiroya ITO , Yuki UGAJIN , Shingo HAMADA , Takashi IKEDA , Takafumi ABE
IPC分类号： F04D29/38 , F04D25/02 , F04D29/053
摘要： A propeller fan includes a shaft portion disposed on a rotation axis, and a blade disposed on an outer peripheral side of the shaft portion and including a leading edge and a trailing edge. The blade includes a negative pressure surface in which a plurality of recesses are formed, and the plurality of recesses include a first recess and a second recess disposed on the trailing edge side than the first recess in a circumferential direction about the rotation axis as a center. The first recess has a depth larger than a depth of the second recess.
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公开(公告)号：US20190293091A1
公开(公告)日：2019-09-26
申请号：US16437190
申请日：2019-06-11
摘要： A propeller fan includes a boss on a rotation axis, and a blade at an outer circumferential portion of the boss. The blade includes a leading edge and a trailing edge. The blade includes a first area, a first sub-area located inward of the first area, and a second sub-area located outward of the first area. The first area includes a notch formed in the trailing edge. Each of the first sub-area and the second sub-area include plural notches formed in the trailing edge. The notch in the first area is larger than each of the plural notches in each of the first sub-area and the second sub-area.
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公开(公告)号：US20190120253A1
公开(公告)日：2019-04-25
申请号：US16072210
申请日：2016-07-01
摘要： A propeller fan includes a boss on a rotation axis, and a blade at an outer circumferential portion of the boss. The blade includes a leading edge and a trailing edge. The blade includes a first area, a second area inward of the first area, and third areas outward of the second area. The third areas are located inward and outward of the first area, with the first area interposed between the third areas. The first area, the second area and the third areas each include at least one notch in the trailing edge. The notches satisfy the relationship “P1>P2>P3”, where P1 is the width of the notch in the first area, P2 is the width of the notch in the second area, and P3 is the width of the notch in each of the third areas.
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公开(公告)号：US20240026899A1
公开(公告)日：2024-01-25
申请号：US18043917
申请日：2020-10-23
CPC分类号： F04D29/4226 , F04D29/281 , F04D17/08
摘要： A multi-blade centrifugal air-sending device includes an impeller 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 disposed to face the back plate, the rim fixing the plurality of blades; and a scroll casing having a spiral shape and housing the impeller, the scroll casing being configured such that air is introduced from the side of the rim and blown out to the outer peripheral side. The impeller is constituted by a metal. Each of the blades has a wall thickness constant from the side of the back plate to the side of the rim and extends toward the inner side further than an inner peripheral end of the rim.
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公开(公告)号：US20240026887A1
公开(公告)日：2024-01-25
申请号：US18043161
申请日：2020-10-27
CPC分类号： F04D19/002 , F24F1/38 , F04D29/522 , F04D29/38
摘要： In an axial flow fan, a plurality of blades are rotated about a rotation axis of the plurality of blades to generate an air current. Each of the plurality of blades includes a leading edge portion on a forward side in a rotation direction, and a trailing edge portion on a rearward side in the rotation direction. At the trailing edge portion of the blade, a first recessed portion is formed such that the first recessed portion is recessed toward the leading edge portion. At the leading edge portion of the blade, the second recessed portion is recessed toward the trailing edge portion. Ranges of the first recessed portion and the second recessed portion in a radial direction overlap with each other or completely coincide with each other.
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8.发明公开公开(公告)号：US20240011500A1
公开(公告)日：2024-01-11
申请号：US18453642
申请日：2023-08-22
发明人： Takuya TERAMOTO , Ryo HORIE , Takahiro YAMATANI , Kazuya MICHIKAMI , Hiroshi TSUTSUMI , Keijiro YAMAGUCHI
IPC分类号： F04D29/42
CPC分类号： F04D29/4226 , F04D29/422 , F04D29/441
摘要： 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.
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公开(公告)号：US20220196254A1
公开(公告)日：2022-06-23
申请号：US17603724
申请日：2019-06-13
IPC分类号： F24F1/0022 , F04D29/42
摘要： A centrifugal fan includes: an impeller having a back plate; and a scroll casing including a peripheral wall 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：US20220145893A1
公开(公告)日：2022-05-12
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
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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