US 12,000,408 B2
Fairing and fan device
Qi Yao, Hefei (CN); Jie Zhou, Hefei (CN); and Xin Yang, Hefei (CN)
Assigned to Sungrow Power Supply Co., Ltd., Hefei (CN)
Filed by Sungrow Power Supply Co., Ltd., Hefei (CN)
Filed on Feb. 16, 2023, as Appl. No. 18/170,018.
Claims priority of application No. 202220490190.X (CN), filed on Mar. 3, 2022.
Prior Publication US 2023/0279871 A1, Sep. 7, 2023
Int. Cl. F04D 29/54 (2006.01); F04D 19/00 (2006.01); F04D 29/52 (2006.01)
CPC F04D 29/522 (2013.01) [F04D 19/002 (2013.01); F04D 29/541 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A fairing, comprising a fairing body which is arranged at an air vent of a fan, wherein an axis of the fairing body is collinear with an axis of the fan rotation shaft of the fan, wherein the fairing body has a fairing area, the fairing area is annular and is located at a periphery of a geometric center of the fairing body perpendicular to the axis of the fan rotation shaft, and the fairing area is provided with a plurality of fairing through holes,
wherein the fairing body is provided with a non-fairing area at an inner side of an inner ring of the fairing area perpendicular to the axis of the fan rotation shaft, and the non-fairing area is provided with a material saving structure,
wherein the material saving structure is a material saving through hole, an area of the material saving through hole is larger than each of the plurality of fairing through holes and a hole wall of the material saving through hole coincides with the inner ring of the fairing area,
wherein, along the axis of the fan rotation shaft, an inner side surface, close to the fan, of the non-fairing area is flush with an inner side surface of the fairing body, and an outer side surface, away from the fan, of the non-fairing area is flush with an outer side surface of the fairing body,
wherein, if an outer ring of the fairing area is in shape of circle, R≥R0;
if the outer ring of the fairing area is in shape of polygon, L≥R0;
wherein R is a radius of the outer ring of the fairing area, R0 is an inner diameter of a fan duct, and L is a minimum distance between a side of the polygon and a geometric center of the polygon.