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.

公开(公告)号：US11965522B2

公开(公告)日：2024-04-23

申请号：US17586786

申请日：2022-01-28

Applicant: DELTA ELECTRONICS, INC.

Inventor： Pei-Han Chiu ,  Chien-Ming Lee ,  Chung-Yuan Tsang ,  Chao-Fu Yang

IPC: B63H1/26 ,  F04D29/34 ,  F04D29/38 ,  F04D29/66

CPC classification number: F04D29/34 ,  F04D29/384 ,  F04D29/66

Abstract: An impeller includes a hub and a plurality of blades. The blades are arranged around the hub, and each blade includes a leading edge, a blade tip, a root portion, a trailing edge, a windward side and a leeward side. The windward side including a first turning point and a second turning point, a first vertical height difference is formed from the blade tip to the first turning point, and a second vertical height difference is formed from the first turning point to the second turning point, and the first vertical height difference is greater than the second vertical height difference. The impeller apparently reduces the noise.