公开(公告)号：US12006942B2

公开(公告)日：2024-06-11

申请号：US17410767

申请日：2021-08-24

Applicant: Delta Electronics, Inc.

Inventor： Po-Wei Huang ,  Chien-Ming Lee ,  Shun-Chen Chang

IPC: F04D19/00 ,  F04D29/38 ,  F04D29/52 ,  F04D29/70

CPC classification number: F04D19/007 ,  F04D19/002 ,  F04D29/386 ,  F04D29/522 ,  F04D29/703

Abstract: A serial-type diagonal fan assembly having a first fan and at least one second fan is provided. The first fan has a first front fan frame and a first fan wheel. A first hub of the first fan wheel has a radial cross-sectional area increased from a top toward a bottom of the first hub. The second fan has a second front fan frame and a second fan wheel, the second hub of the second fan wheel has an axial cross-sectional area increased from a top to a bottom of the second hub. The first fan and the second fan are arranged in a series. A spoiler is arranged on a second air inlet of the second front fan frame, an outer edge of the spoiler is embedded in a positioning groove of the second front fan frame without protruding from the second front fan frame.