US 12,221,977 B2
Fan apparatus and air conditioner outdoor unit
Qizhen Wang, Shanghai (CN); Yuefei Li, Shanghai (CN); Naitong Liu, Shanghai (CN); Feng Yang, Shanghai (CN); Yandong Wu, Shanghai (CN); Zhenjiang Zhan, Shanghai (CN); Longxin Zhang, Shanghai (CN); and Weitao Chen, Shanghai (CN)
Assigned to GD MIDEA HEATING & VENTILATING EQUIPMENT CO., LTD., Foshan (CN); and MIDEA GROUP CO., LTD., Foshan (CN)
Filed by GD Midea Heating & Ventilating Equipment Co., Ltd., Foshan (CN); and Midea Group Co., Ltd., Foshan (CN)
Filed on Nov. 22, 2022, as Appl. No. 17/992,806.
Application 17/992,806 is a continuation of application No. PCT/CN2021/121841, filed on Sep. 29, 2021.
Claims priority of application No. 202011080566.1 (CN), filed on Oct. 10, 2020; and application No. 202022248414.X (CN), filed on Oct. 10, 2020.
Prior Publication US 2023/0078022 A1, Mar. 16, 2023
Int. Cl. F04D 19/02 (2006.01); F04D 25/08 (2006.01); F04D 25/16 (2006.01); F04D 29/38 (2006.01); F04D 29/54 (2006.01); F24F 1/38 (2011.01); F01P 5/02 (2006.01); F04D 19/00 (2006.01)
CPC F04D 29/38 (2013.01) [F04D 25/08 (2013.01); F04D 25/166 (2013.01); F04D 29/541 (2013.01); F24F 1/38 (2013.01); F01P 2005/025 (2013.01); F04D 19/007 (2013.01); F04D 19/024 (2013.01); F04D 29/384 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A fan apparatus, comprising:
a first wind wheel and a second wind wheel, axially arranged at an interval;
wherein a spacing S1 between the first wind wheel and the second wind wheel is configured as: S1<H1+H2/2, where H1 is a length of the first wind wheel along the axial direction, and H2 is a length of the second wheel along the axial direction;
wherein the fan apparatus further comprises a guide lobe spaced axially from the first wind wheel and the second wind wheel, wherein each of the first wind wheel, the second wind wheel, and the guide lobe comprises a plurality of blades; a number n1 of the plurality of blades in the first wind wheel, a number n2 of the plurality of blades in the second wind wheel, and a number n3 of the plurality of blades in the guide lobe satisfies
n1≤n2, n2≤n3≤2n1; or
n2≤n1,n1≤n3≤2n2.