公开(公告)号：US11976824B2

公开(公告)日：2024-05-07

申请号：US17603724

申请日：2019-06-13

Applicant: Mitsubishi Electric Corporation

Inventor： Hiroyasu Hayashi ,  Takuya Teramoto ,  Ryo Horie ,  Takahiro Yamatani ,  Hiroshi Tsutsumi

IPC: F04D29/42 ,  F04D17/16 ,  F04D29/06 ,  F04D29/40 ,  F04D29/44 ,  F04D29/60 ,  F24F1/0022

CPC classification number: F24F1/0022 ,  F04D29/4226 ,  F04D29/44

Abstract: 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.

公开(公告)号：US11885339B2

公开(公告)日：2024-01-30

申请号：US17288319

申请日：2018-10-30

Applicant: Mitsubishi Electric Corporation

Inventor： Takuya Teramoto ,  Hiroyasu Hayashi ,  Atsushi Kono ,  Ryo Horie ,  Kazuya Michikami ,  Takahiro Yamatani ,  Hiroshi Tsutsumi

IPC: F04D17/10 ,  F04D29/58 ,  F24F1/00 ,  F04D29/28 ,  F04D29/42 ,  F04D17/16 ,  F24F1/0022

CPC classification number: F04D17/10 ,  F04D17/162 ,  F04D29/281 ,  F04D29/424 ,  F04D29/5826 ,  F24F1/0022 ,  F05D2250/52

Abstract: 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.

公开(公告)号：USD963153S1

公开(公告)日：2022-09-06

申请号：US29757251

申请日：2020-11-04

Applicant: Mitsubishi Electric Corporation

Designer： Ryo Horie ,  Takuya Teramoto ,  Takahiro Iinuma

公开(公告)号：USD944966S1

公开(公告)日：2022-03-01

申请号：US29694038

申请日：2019-06-06

Applicant: Mitsubishi Electric Corporation

Designer： Ryo Horie ,  Takahiro Yamatani ,  Kazuya Michikami ,  Hiroshi Tsutsumi ,  Takuya Teramoto ,  Hiroyasu Hayashi

公开(公告)号：US12152600B2

公开(公告)日：2024-11-26

申请号：US17915389

申请日：2020-10-22

Applicant: Mitsubishi Electric Corporation

Inventor： Takuya Teramoto ,  Hiroyasu Hayashi ,  Ryo Horie ,  Takashi Yamaguchi ,  Tomohiro Nagano ,  Kazuya Michikami ,  Takahiro Yamatani

IPC: F04D29/28 ,  F04D17/16 ,  F04D25/06 ,  F24F1/0022

Abstract: 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.

公开(公告)号：US11808270B2

公开(公告)日：2023-11-07

申请号：US17438553

申请日：2019-04-25

Applicant: Mitsubishi Electric Corporation

Inventor： Takuya Teramoto ,  Hiroyasu Hayashi ,  Ryo Horie ,  Kazuya Michikami ,  Takahiro Yamatani ,  Hiroshi Tsutsumi

IPC: F04D17/16 ,  F04D29/28 ,  F04D29/30 ,  F04D29/42 ,  F04D29/44 ,  F04D29/60 ,  F04D29/68

CPC classification number: F04D17/162 ,  F04D29/282 ,  F04D29/30 ,  F04D29/424 ,  F04D29/44 ,  F04D29/60 ,  F04D29/68

Abstract: 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.

公开(公告)号：US11274678B2

公开(公告)日：2022-03-15

申请号：US17042620

申请日：2018-05-21

Applicant: Mitsubishi Electric Corporation

Inventor： Takuya Teramoto ,  Ryo Horie ,  Takahiro Yamatani ,  Kazuya Michikami ,  Hiroshi Tsutsumi ,  Hiroyasu Hayashi

IPC: F04D29/42 ,  F04D29/44 ,  F04D29/66 ,  F24F1/0022

Abstract: 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.

公开(公告)号：USD938570S1

公开(公告)日：2021-12-14

申请号：US29694036

申请日：2019-06-06

Applicant: Mitsubishi Electric Corporation

Designer： Ryo Horie ,  Takahiro Yamatani ,  Takuya Teramoto ,  Hiroyasu Hayashi

公开(公告)号：US12196218B2

公开(公告)日：2025-01-14

申请号：US17771056

申请日：2019-12-23

Applicant: Mitsubishi Electric Corporation

Inventor： Takuya Teramoto ,  Hiroyasu Hayashi ,  Ryo Horie ,  Takashi Yamaguchi ,  Tomohiro Nagano ,  Kazuya Michikami ,  Takahiro Yamatani ,  Hiroshi Tsutsumi

IPC: F04D29/28 ,  F04D17/16 ,  F04D29/30 ,  F04D29/42 ,  F24F1/0047 ,  F24F1/0317

Abstract: 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.

公开(公告)号：US11592032B2

公开(公告)日：2023-02-28

申请号：US16755732

申请日：2017-10-31

Applicant: Mitsubishi Electric Corporation

Inventor： Takuya Teramoto ,  Ryo Horie ,  Takahiro Yamatani ,  Kazuya Michikami ,  Hiroshi Tsutsumi ,  Hiroyasu Hayashi

IPC: F04D29/42 ,  F04D29/58 ,  F25D17/06 ,  F04D25/08 ,  F04D29/40 ,  F04D29/66

Abstract: 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.