SI20708A2 - Wind turbine with diffuser - Google Patents

Abstract

The invention of a wind turbine with a diffuser enables to carry out such a wind turbine that would be able to exploit the feeblest winds. The solution is obtained by a wind-guiding shroud and a diffuser fixed to blade carriers. The wind-guiding shroud itself extends to the rear side of the blades and makes possible to increase the speed of the wind entering the blades. In order to exploit still a greater part of the available kinetic energy, the right solution lies in the lowering of the outflow speed behind the rotor of the wind turbine, which means that the diffuser should be added at the exit from the rotor. By increasing the flow cross-section in this manner, the outflow speed is decreased raising thus the pressure difference which may be exploited by the wind turbine rotor.

Description

Alojz FERLAN

Horseradish 16 2000 MARIBOR

WINDOW WITH DIFFUSER

The object of the invention is a windmill which allows the exploitation of the smallest winds, since in our places there are winds with a speed of 2 m / s.

As a result, I decided to develop a wind farm that would take advantage of these winds.

I have not yet found a known solution to this problem. Although diffuser windmills exist, they only take advantage of stronger winds and the diffusers are completely different in design.

In the following example, I would like to give you a more detailed introduction of a wind turbine with a diffuser and a wind router. The advantage of such a windmill is that the wind router directs the wind flow to the ends of the blades, where the efficiency is much higher. From the same air flow, the wind speed on the blades increases, which means more power utilization.

-2-2 I will explain the invention in more detail from the attached pictures, of which it shows:

FIG. 1 is a cross-sectional view of a diffuser windmill according to variant I;

FIG. 2 is a cross-sectional view of a diffuser windmill according to Embodiment II;

FIGURE 3 front view of the windmill

The wind tunnel with the diffuser and the wind router according to the invention is shown in FIG. 1 in a cross-sectional side view I. The essence of the solution is that a wind guide (5) is attached to the blades (2), which extends to the end edge of the blades (1). The design of the wind router itself allows for an even greater amount of flow air, thus further increasing the inlet speed. An oscillator (3) is mounted on the axle between the blades and is mounted (4). If we want to use even more of the available velocity energy, the right direction is to reduce the outflow velocity behind the rotor. This means that it is necessary to add a diffuser (6) at the outlet of the rotor. In this way, by increasing the flow cross section, we reduce the discharge velocity and thus increase the pressure difference that can be exploited with the wind rotor.

Figure 2 shows the windmill in variant solution II in cross-sectional side view. The point of the solution is that the wind rectifier (5) is away from the blade location, so that the wind flow can pass through the diffuser (6), which is created between the blade and the wind router and a lower pressure (underpressure) is created behind said router. The suction effect increases the wind speed on the blades.

-3-3Figure 3 shows the windmill from the front. The front shows blades (1) and a wind rotor (5) that almost touches the blades.

Claims (1)

1. A diffuser windmill is characterized by having a wind rectifier (5) attached in the middle, which directs the wind to the extreme edge of the blades, thereby increasing the wind speed on the windmill blades and having a diffuser (6) attached at the extreme edge of the blades.