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公开(公告)号：US12140155B2
公开(公告)日：2024-11-12
申请号：US17674207
申请日：2022-02-17
Applicant: DENSO CORPORATION
Inventor： Fuminobu Watanabe , Fumiya Ishii , Shoichi Imahigashi , Kenji Yoshida
Abstract: A fan includes blades and a side plate. The side plate includes a fan ring portion having a cylindrical shape centered on a fan axis. A guide part that is annular is arranged on one side of the fan ring portion in the axial direction and forms a suction port through which the air sucked into the fan passes. A communication path that allows an upstream space located on the one side in the axial direction with respect to the guide part to communicate with a gap between the fan ring portion and the guide part is formed outside the guide part in a radial direction of the fan axis. The fan ring portion is located outside in the radial direction with respect to an innermost peripheral portion of the guide part located on an innermost side in the radial direction.
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公开(公告)号：US11761456B2
公开(公告)日：2023-09-19
申请号：US17479805
申请日：2021-09-20
Applicant: DENSO CORPORATION
Inventor： Shoichi Imahigashi , Syuzou Oda
CPC classification number: F04D29/4226 , F04D17/16 , F04D29/281
Abstract: A centrifugal fan sucks in air from one side in an axial direction and blows out air outward in a radial direction. A blade leading edge is connected to a cylinder inner surface of a side plate. The blade leading edge has: a tip end extended linearly by an apex of a convex surface and connected to the cylinder inner surface; and a convex surface end indicating a boundary between the convex surface and a side surface of the blade. When the cylinder inner surface has: a diameter Φa at a first position, which is an end position of the upstream tubular portion of the side plate on one side in the axial direction, a diameter Φb at a second position where the blade leading edge is connected; and a diameter Φc at a third position where the convex surface end is connected, a relationship of Φa≥Φb≥Φc is satisfied.
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