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1. WO2022001691 - SHARK GILL-SHAPED BLADE DRAG REDUCTION STRUCTURE FOR WIND GENERATOR, BLADE, AND MANUFACTURING METHOD

Publication Number WO/2022/001691
Publication Date 06.01.2022
International Application No. PCT/CN2021/100836
International Filing Date 18.06.2021
Chapter 2 Demand Filed 22.04.2022
IPC
F03D 1/06 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
1Wind motors with rotation axis substantially parallel to the air flow entering the rotor
06Rotors
CPC
F03D 1/0675
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
1Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
06Rotors
065characterised by their construction, i.e. structural design details
0675of the blades
F05B 2260/97
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
2260Function
97Reducing windage losses
Y02E 10/72
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
10Energy generation through renewable energy sources
70Wind energy
72Wind turbines with rotation axis in wind direction
Y02P 70/50
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
70Climate change mitigation technologies in the production process for final industrial or consumer products
50Manufacturing or production processes characterised by the final manufactured product
Applicants
  • 上海海事大学 SHANGHAI MARITIME UNIVERSITY [CN]/[CN]
Inventors
  • 吴宛洋 WU, Wanyang
  • 钟兢军 ZHONG, Jingjun
Agents
  • 上海元好知识产权代理有限公司 SUNSHINEIP INTELLECTUAL PROPERTY LAWFIRM
Priority Data
202010599188.128.06.2020CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) SHARK GILL-SHAPED BLADE DRAG REDUCTION STRUCTURE FOR WIND GENERATOR, BLADE, AND MANUFACTURING METHOD
(FR) STRUCTURE DE RÉDUCTION DE TRAÎNÉE DE PALE EN FORME DE BRANCHIE DE REQUIN POUR AÉROGÉNÉRATEUR, PALE ET PROCÉDÉ DE FABRICATION
(ZH) 用于风力发电机的鲨鱼鳃式叶片减阻结构、叶片及制造方法
Abstract
(EN) A shark gill-shaped blade drag reduction structure for a wind generator, a blade, and a manufacturing method. The blade drag reduction structure of the wind generator is disposed on the surface of a blade and comprises a slot provided on the blade. The slot is provided with an airflow inlet (2) and multiple airflow outlets. An airflow channel (8) is formed between the airflow inlet and the multiple airflow outlets. When the blade rotates, airflow enters from the airflow inlet and then passes through the airflow outlet along the airflow channel so as to form a jet flow. The flow rate of air in the airflow channel is lower than that of a main flow. The flow path of the jet flow flowing out from the airflow outlet is bent under the impact of the main flow, such that a buffer region is formed between the blade surface and the main flow, thereby reducing the friction of the main flow on the blade.
(FR) L'invention concerne une structure de réduction de traînée de pale en forme de branchie de requin pour un aérogénérateur, une pale et un procédé de fabrication. La structure de réduction de traînée de pale de l'aérogénérateur est disposée sur la surface d'une pale et comprend une fente disposée sur la pale. La fente est pourvue d'une entrée d'écoulement d'air (2) et de multiples sorties d'écoulement d'air. Un canal d'écoulement d'air (8) est formé entre l'entrée d'écoulement d'air et les multiples sorties d'écoulement d'air. Lorsque la pale tourne, l'écoulement d'air entre par l'entrée d'écoulement d'air et passe ensuite par la sortie d'écoulement d'air le long du canal d'écoulement d'air de façon à former un écoulement de jet. Le débit d'air dans le canal d'écoulement d'air est inférieur à celui d'un écoulement principal. Le trajet d'écoulement de l'écoulement de jet sortant de la sortie d'écoulement d'air est courbé sous l'impact de l'écoulement principal, de telle sorte qu'une région tampon est formée entre la surface de pale et l'écoulement principal, ce qui permet de réduire le frottement de l'écoulement principal sur la pale.
(ZH) 一种用于风力发电机的鲨鱼鳃式叶片减阻结构、叶片及制造方法,该风机叶片减阻结构设置于叶片的表面,包括一开设于叶片上的凹槽,凹槽设有一气流进口(2)和多个气流出口,气流进口和多个气流出口之间形成气流通道(8);叶片转动,气流从气流进口进入,沿着气流通道依次经过气流出口形成射流,且在气流通道中的气体流速低于主流,从气流出口流出的射流在主流的冲击下流动路径弯曲,在叶片表面与主流之间形成缓冲区域,减小主流对叶片的摩擦。
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