Wind wheel

FIELD: machine building.

SUBSTANCE: wind wheel comprising a hub and blades from a bent resilient strip connected to the hub is proposed. Every blade is made by single-sided joint of the opposite ends of a bent resilient strip. Additionally its blades are set with the designed incidence angle at their end and at the units of their connection to the hub.

EFFECT: use of the invention will allow for the increase of wind turbine efficiency.

2 dwg

 

The invention relates to wind energy and can be used as a source of mechanical energy (and also used as an engine).

Known wind wheel (rotor of a wind turbine) having a hub and blades, each of which is formed by one-sided dock opposite ends of the curved elastic bands, characterized in that the blades mounted on the hub with the calculated angles zaklinania nodes in their connection with the hub the angles of zaklinania on the end of them is zero, which eliminates end loss (SU 1787207 A-3, F03D 1/06 from 07.01.1993 G., formula 2).

The disadvantage of this propeller - low efficiency due to the fact that half of the air flow within the swept them square wraps around it and is not converted into mechanical energy, because the angle of zaklinania the end of the blades is equal to zero.

The purpose of the invention - improving the efficiency of the propeller.

This object is achieved in that the blades are installed with the calculated angles zaklinania on their end and the junction with the hub.

Fig. 1 is a diagram of the propeller blade, front view;

Fig. 2 General view of the propeller, front view.

Wind wheel comprising a blade 1 is formed by one-sided dock opposite ends of the curved elastic bands, and the hub 2.

The hub 2 has a sleeve 3, the ring 4 and the flanges 5 (shown only one).

The blade 1 of the propeller is installed with the calculated angles zaklinaniaϕR*(not shown) on the ends and at the junction with the hubϕrwith mounting pads and bolts (not shown).

The manufacture of the propeller is shown in Fig. 2 calculated eccentricity

e=RsinϕR,

where e is the eccentricity;

the angleϕRequal to the calculated corner of zaklinaniaϕR*the ends of the blades of the propeller;

R is the radius of the propeller.

The goal is achieved by the fact that it (the propeller) blades are fitted with the calculated angles zaklinania on their end and the junction with the hub.

When designing the propeller designer may provide the possibility of the helical shaped blades (by twisting them around the longitudinal axis of the blade or spacing of the curved ends of the elastic bands along the axis of rotation), what is known and provides maximum efficiency.

Wind wheel comprising STU�Itza and blades each of which is formed by one-sided dock opposite ends of the curved elastic bands, characterized in that the blades are fitted with the calculated angles zaklinania on their end and the junction with the hub.



 

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