公开(公告)号：US20220282735A1

公开(公告)日：2022-09-08

申请号：US17824337

申请日：2022-05-25

Applicant: DENSO CORPORATION

Inventor： Syo KOSAKA

IPC: F04D29/42 ,  F04D25/08 ,  B60H3/06

Abstract: A blower includes an introduction duct provided in an air introduction box. A filter is provided downstream of the introduction duct and upstream of an impeller. A separation cylinder is formed in a cylindrical shape and is provided in the impeller. An inner wall of an air inlet portion of the separation cylinder is provided not overlap with an inner wall of an air outlet portion of the introduction duct over the entire circumference.

公开(公告)号：US20220065263A1

公开(公告)日：2022-03-03

申请号：US17454332

申请日：2021-11-10

Applicant: DENSO CORPORATION

Inventor： Syo KOSAKA ,  Syuzou ODA

IPC: F04D29/42 ,  F04D17/08

Abstract: A centrifugal blower has a scroll casing, and a separation cylinder. The scroll casing has a nose portion having a minimum scroll diameter and a scroll end portion having a maximum scroll diameter. A suction port of the scroll casing is divided into a first half region and a second half region by a reference line passing through a rotation axis and the nose portion. An air introduction portion of the separation cylinder is arranged to have an area overlapping the first half region in the axial direction, which is larger than an area overlapping the second half region. An outer peripheral wall of the scroll casing is set such that a divergence angle from the nose portion to an intermediate portion is larger than a divergence angle from the intermediate portion to the scroll end portion.

公开(公告)号：US20220252082A1

公开(公告)日：2022-08-11

申请号：US17728740

申请日：2022-04-25

Applicant: DENSO CORPORATION

Inventor： Syo KOSAKA ,  Yuuya SUZUKI

IPC: F04D29/44 ,  F04D17/10 ,  F04D29/42 ,  F04D29/70

Abstract: A casing, which receives a fan, has a suction port forming portion that forms a suction port. A separation tube has a tube upper end portion, which forms an air inlet, through which the air flows into an inside of the separation tube. The tube upper end portion is located on one side of the suction port forming portion in an axial direction such that the tube upper end portion overlaps with a portion of the suction port in the axial direction. A rib is formed at a periphery of the suction port. The periphery of the suction port has: an overlapping region, which overlaps with the tube upper end portion in the axial direction; and a non-overlapping region, which does not overlap with the tube upper end portion in the axial direction. The rib occupies more area in the non-overlapping region than in the overlapping region.

公开(公告)号：US20170130723A1

公开(公告)日：2017-05-11

申请号：US15334432

申请日：2016-10-26

Applicant: DENSO CORPORATION

Inventor： Syo KOSAKA ,  Shuzo ODA

IPC: F04D17/16 ,  F04D29/68 ,  F04D29/42 ,  F04D29/053 ,  F04D29/28

CPC classification number: F04D17/16 ,  F04D29/053 ,  F04D29/162 ,  F04D29/282 ,  F04D29/4213 ,  F04D29/4226 ,  F04D29/687

Abstract: A centrifugal blower includes a rotation shaft, an impeller, a casing, and a deflection portion. The impeller rotates about the rotation shaft to draw an air therein in an axial direction of the rotation shaft and discharge the air outward in a radial direction of the rotation shaft. The impeller includes a plurality of blades and a side panel having an annular shape and connecting the plurality of blades in the axial direction. The casing accommodates the impeller and includes an air intake portion adjacent to the side panel. The air intake portion has a bell mouth shape to have a rim portion that defines an opening through which the drawn air is guided to an inside of the impeller. The deflection portion deflects an airflow along the rim portion of the air intake portion toward the side panel.