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

IPC: F04D29/42 ,  F04D17/16 ,  F04D29/44 ,  F04D29/24

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.

公开(公告)号：US10935049B2

公开(公告)日：2021-03-02

申请号：US16361315

申请日：2019-03-22

Applicant: DENSO CORPORATION

Inventor： Masanori Yasuda ,  Shouichi Imahigashi

IPC: F04D29/66 ,  F04D17/16 ,  F04D29/42 ,  F04D25/08

Abstract: A bladed wheel of a blower device has a main plate, a side plate and multiple fan blades between the main plate and the side plate. A fan casing of the blower device has a bell mouth portion and a guide wall portion, which extends in a radial-outward direction from an axial rear-side end of the bell mouth portion to an outer periphery of the side plate. An air reflecting space is formed in the fan casing at a radial-outside position of the guide wall portion and at an axial front-side position of the fan casing between an axial rear-side end of the guide wall portion and an axial front-end wall portion of the fan casing. Air blown out from the bladed wheel flows through an air blow-out passage, wherein sound wave of the air from the bladed wheel and sound wave of the air from the air reflecting space interfere with each other so that noise is decreased.

公开(公告)号：US09447792B2

公开(公告)日：2016-09-20

申请号：US14956832

申请日：2015-12-02

Applicant: DENSO CORPORATION ,  NIPPON SOKEN, INC.

Inventor： Yasushi Mitsuishi ,  Masaharu Sakai ,  Masanori Yasuda ,  Shouichi Imahigashi ,  Syunsuke Ishiguro

IPC: F04D29/42 ,  F04D17/16 ,  F04D17/10

CPC classification number: F04D29/4233 ,  F04D17/10 ,  F04D17/16 ,  F04D17/162 ,  F04D29/4213 ,  F04D29/4226

Abstract: A centrifugal blower provided with a spiral shaped scroll chamber where a bottom part of the scroll chamber gradually expands downward in the axial direction of the fan well along with expansion of the spiral and where a flow area gradually expands toward an air outlet from a spiral start part of the casing, the centrifugal blower having an initial slant angle θ0 at the spiral start part of the bottom part of the scroll chamber of a range of angle of 5.2° to 27.5° or setting a backflow prevention rib at the fan outlet.

Abstract translation: 一种设置有螺旋形涡旋室的离心式鼓风机，其中涡旋室的底部随着螺旋的膨胀在风扇的轴向方向上逐渐向下膨胀，并且流动面积从螺旋起始向空气出口逐渐膨胀 在所述壳体的一部分中，所述离心式鼓风机在所述涡旋室的底部的螺旋起始部分处具有5.2°至27.5°的角度范围内的初始倾斜角θ0或者在所述风扇出口处设置防回流肋。

公开(公告)号：US20150192143A1

公开(公告)日：2015-07-09

申请号：US14410796

申请日：2013-06-06

Applicant: DENSO CORPORATION

Inventor： Masaharu Sakai ,  Shouichi Imahigashi

IPC: F04D29/28 ,  F04D29/30 ,  F04D17/10

CPC classification number: F04D29/281 ,  F04D17/10 ,  F04D17/162 ,  F04D29/282 ,  F04D29/30

Abstract: A centrifugal multi-blade blower includes an impeller, and a casing that accommodates the impeller, and draws in air at least from an inlet port of the casing which opens on one end side of a rotation shaft and blows out the air radially outward of the rotation shaft. The impeller includes a main plate that is joined to the rotation shaft, vanes which are arranged around the axis of the rotation shaft and the other end sides of which in the rotation axis direction are connected to the main plate, and a side plate that connects together the vanes on their one end sides in the rotation axis direction. The vanes are characterized in that an inlet angle on a cross-sectional surface crossing each inner peripheral edge part of the vanes on a meridian plane of the impeller in a predetermined direction is evenly made in the entire region from the side plate-side through the main plate-side, and that outer peripheral edge parts of the vanes are configured to be away from the axis of the rotation shaft from the main plate-side toward the side plate-side.

Abstract translation: 离心多叶片鼓风机包括叶轮和容纳叶轮的壳体，并且至少从壳体的入口在空气中吸入，该入口在旋转轴的一端侧开口，并将空气径向向外吹出 旋转轴。 叶轮包括与旋转轴接合的主板，围绕旋转轴的轴线布置的旋转轴线方向的另一端侧连接到主板的侧板和连接到主旋转轴的侧板 叶片的一端在旋转轴线方向一体地组合在一起。 叶片的特征在于，在与叶轮的子午面相对的叶片的每个内周边缘部分的横截面上的预定方向上的入口角均匀地从侧板侧通过 主板侧，并且叶片的外周边缘部分构造成从主板侧朝向侧板侧远离旋转轴的轴线。

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

IPC: F04D29/28 ,  B60N2/56 ,  F04D29/42 ,  F04D29/16 ,  F04D25/06 ,  F04D29/66

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.

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

IPC: F04D29/28 ,  F04D17/16 ,  F04D29/42 ,  F04D29/66 ,  F04D29/30

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.

公开(公告)号：US09890789B2

公开(公告)日：2018-02-13

申请号：US14760019

申请日：2014-01-08

Applicant: DENSO CORPORATION

Inventor： Shouichi Imahigashi

IPC: F04D29/28 ,  F04D29/08 ,  F04D25/16 ,  F04D29/16 ,  B60H1/00 ,  F04D17/08 ,  F04D29/42 ,  F04D29/66

CPC classification number: F04D29/083 ,  B60H1/00471 ,  F04D17/08 ,  F04D25/166 ,  F04D29/162 ,  F04D29/281 ,  F04D29/4226 ,  F04D29/663

Abstract: A first fan is disposed in a first air passage, and a second fan is disposed in a second air passage. A partition wall that divides inside of a casing into the first air passage and the second air passage has an inclination part that is inclined toward the second fan as extending outward in a radial direction. The second fan has an end portion located adjacent to the first fan in a rotation axis direction and a projection part projected from the end portion outward in the radial direction. The inclination part is provided to cover the projection part across a clearance.