KR20130017770A - The case of wind blades considering the difference of internal wind speeds-induced internal pressure drop and the complex vertical-axis wind blades which are built into this case - Google Patents

Abstract

PURPOSE: A wing container customized to an internal pressure drop caused by differences of internal wind speed and a composite vertical axis wing installed therein are provided to generate an expanded amplification effect for a wind force by the differences of internal pressure caused by an increase of wind speed by applying Bernoulli's principle. CONSTITUTION: A wings container and a composite vertical axis wing installed therein comprise the composite vertical wing which rotates clockwise and is composed of six straight vertical blades and installed in the inlet of the container. The composite vertical axis wing set up in the outlet in the container has a greater rotation radius and weight than a wing set up in the inlet. The speed of a wind current passing through the inside of the container of the wings is determined by Bernoulli's principle based on an inversed ratio of the size of the inlet area to the size of the outlet area. The speed of the wind current in the section of the outlet with the composite vertical axis wing installed, therefore, is faster than the speed of the wind current in the section of the inlet on which the composite vertical axis wing is installed. The wind current of the container flowed in to fill up the slight pressure difference of the inside is merged with the wind current of the inside of container through a slot(T(10)) which is set up on the lower wall of the container in which the composite vertical axis wing of the outlet is installed. The wind with a more powerful wind force, therefore, passes through the vertical axis wing on the outlet.

Description

The case of wind blades considering the difference of internal wind speeds-induced internal pressure drop and the complex vertical-axis wind blades which are built into this case}

The present invention is a technology belonging to the field of eco-friendly, renewable energy. In more detail, the number of vertical-axis blades used in vertical-axis wind turbines (VWATs) can be efficiently placed, embedded, and passed through the vessel. Case of wind blades that allow the built-in wings to take full advantage of the flow of wind and wind energy that is installed inside the vessel and passes through the interior of the vessel. Rotational power to rotate wind turbine gears allows for maximum conversion of complex vertical-axis wind blades, ie triggering vertical-axis wind blades and main vertical shafts. The present invention relates to a method for designing and manufacturing a composite vertical shaft blade composed of a main vertical-axis wind blade, and related technologies.

Horizontal-Axis Wind Turbines (HAWTs), which use propeller-type horizontal-axis wind blades, are used to scatter the flow of wind. As a result, they cannot be installed tightly in rows and are usually installed laterally, requiring a large installation area. On the other hand, Vertical-Axis Wind Turbines (VAWTs), which use vertical-axis wind blades, do not scatter the wind flow, so that the fruit trees are arranged closely and horizontally. Therefore, even a small area can form a wind farm similar to the fruit farm (see Fig. 1).

Unlike the horizontal blades, in addition to the nature of the wind flow passing between the vertical blades, in addition to the nature of the study published in (Non Patent Literature 1), through "-carefully arranged vertical wind turbines (VAWTs) While the wind flow that rotates the vertical blades, as shown in FIG. 2, with no scattering, empirical fact that they form a circular race or sinusoidal path "(Non-Patent Document 2) Designing and manufacturing techniques for case of wind blades that cleverly install and incorporate a plurality of vertical blades at once, applying Bernoulli's principle, and sufficient rotational power at low wind speeds. Background Art of the present invention has been to secure a design and fabrication technology for composite vertical axis blades capable of generating.

Application No. 10-2010-0043002 (Park Kwang-hyun and one other person), 2010.05.07. Application No. 10-2010-0082195 (Park Kwang-hyun and six others), 2010.08.24. Application No. 10-2010-0123042 (Park Kwang-hyun and six others), 2010.12.03. US patent 1,835 018, 1931

 Robert Whittlesey and John Dabir, “Fish Schooling as a basis for wind farm design”, 62nd Annual Meeting of the APS Division of Fluid Dynamics (Minneapolis, Mennesota), vol. 54, No. 19, Nov. 22 ~ 24, 2008.  Daniel Bernoulli, "Bernoulli" s principle ", 1738.

Patent documents pending, (Patent Document 0001), (Patent Document 0002), (Patent Document 0003) has already described the application principle and effect in detail, as already mentioned in the [Background] section In the background, the problem to be solved in the present invention is that when the Bernoulli's principle is applied, "the speed of wind passing through the inside of the case (the speed of wind) is that the wind is introduced Not only does this increase to the size of the reverse ratio of the area size of the inlet to the area of the outlet exit, but also a slight difference in the positional pressure in the vessel (see Figure 3). In addition to the design and fabrication method of the vessel that utilizes the slight pressure difference generated by the position of the vessel as if it were a turbocharger function of an internal combustion engine, Triggering vertical-axis on all the vertical vanes in the vessel to allow for easier rotation of vertical vanes arranged and arranged efficiently according to the sinusoidal path of wind flow. The present invention relates to the design and manufacture of complex vertical-axis wind blades comprising a wind blade and a main vertical-axis wind blade.

A new design technique and a manufacturing method for a case of wind blades part of a vertical axis wind generator to be proposed in the present invention will be conceptually described first with reference to FIG. 3, and further description will be given with reference to FIGS. 4 and 5. do. 3 is a bird's eye view of a vertical axis wind generator introduced as a representative view, and the following figure shows Bernoulli's principle.

Referring first to the case of the wind blades part of the vertical shaft wind turbine shown above, the inlet velocity V _a of the inlet side A is determined by the size of the outlet side smaller than the inlet size. On the side, the exit speed changes to V _b . The relationship between the two speeds is V _a <V _b . In this way, if the area of the inlet and outlet of the vessel into which the wind flows is different, Bernoulli's principle, which is conceptually shown in the figure below, is applied.

(Inlet internal pressure of the container) P _a > P _b (External internal pressure of the container)

Will have the same relationship as

The proper use of the phenomenon in which the difference in internal pressure occurs depending on the position inside the vessel can make the wind velocity at the outlet of the vessel faster, ie, the wind energy more powerfully. It is easier and faster to rotate the heavier and larger compound vertical wing than the front wing, which is installed at the rear of the car.

Now, a method of properly utilizing the internal pressure difference caused by the internal speed difference of the container of the present disease will be described in detail with reference to FIGS. 4 and 5.

As already mentioned, the outlet internal pressure P _b inside the vessel is less than the inlet side internal pressure P _{a and} is smaller than the outlet side external pressure P _B outside the vessel (i.e., the inlet side internal pressure P outside the vessel as shown in FIG. 4). The magnitude relationship between _a and the outlet external pressure P _B is P _a = P _B, and the magnitude relationship between the outlet internal pressure P _b and the outlet external pressure P _B is P _B > P _b ).

Therefore, as the inflow passage of the outside wind flow passing through the outside of the outlet side of the container corresponding to the D portion (the outlet side front wall portion of the vessel bird's-eye view) of the wing container shown in Figs. By devising and installing the slot T (slot T), it acts as a wind passage connecting the inside and outside of the container. By the difference P _B -P _b > 0 between the external pressure P _B outside the container and the internal pressure P _b inside the container, which occurs at the portion where the slot T is installed, that is, the difference between the pressure inside and outside the container is P _B. > because it has the relation of P _b, slot T is installed, the D portion the passing vessel wind flow of outside that is by the action of a high external pressure than the vessel inside pressure P _b P _B, it passes through the slot T of the onset of vessel Flows into the inside of the vessel, with the lower internal pressure P _b being passed through the vessel, and merges with the flow of wind inside the vessel, as shown in Figure 5. Is to rotate the second composite vertical vane blades installed in the more powerful and faster.

Thus, the slot T of the present invention acts as a turbocharger of an internal combustion engine.

In addition, in the present invention, the vertical axis blades arranged and installed inside the container were installed with composite vertical axis blades designed and manufactured in the same shape and structure as shown in FIG. 7 so that they can be easily maneuvered at a lower wind speed.

The composite vertical axis blade shown in Fig. 7 is composed of a main vertical axis ⓐ consisting of three straight-vertical blades having a left direction (counterclockwise) and a driving vertical axis wing ⓑ.

In FIG. 8, a bonding part with a cog wheel for separating the main drawing shafts (a), (b), (c) and connecting the rotational power of the main vertical shaft shown in FIG. 7ⓐ to the wind turbine shaft cog wheel; ) And the connection part (cp) between the drive vertical shaft wing ⓑ can be examined in detail. An enlarged view of part ⓐ in FIG. 8 (a) is shown in FIG. 8 (b), and an enlarged view of part ⓑ in FIG. 8 (a) is shown in FIG. 8 (c). FIG. 9 shows the drive vertical shaft blades constituting the composite vertical shaft blade together with the main vertical shaft blade of FIG.

Three rectilinear rotational forces of the drive vertical shaft blades, designed with three vertically vertical blades with a left direction, rotating counterclockwise (left) as shown in FIG. The principle and process of transferring the initial triggering power of the main vertical blade designed as the vertical blade, that is, the starting power of the main vertical blade, can be conceptually described as follows.

As can be seen in Figure 7, the drive vertical shaft blade that rotates in the radius of the main vertical shaft blade can be designed and manufactured smaller and lighter than the main vertical shaft blade. On the other hand, the main vertical blades transmit the rotational power of the composite vertical shaft blades (rotational power of the main vertical blades + the rotational force of the drive vertical shaft blades) to the wind turbine gears. As shown in Fig. 8 (c), the gear is coupled with the cogwheel by a bonding part (bp), which is larger and heavier than the driving vertical shaft blade.

Therefore, compared to the main vertical blade, the drive vertical shaft blade that can be easily rotated first with a smaller starting force, that is, the rotational power of the drive vertical shaft that reacts and rotates even at lower wind speeds passing through the vessel. 8 (a) and ⓐ part of FIG. 9 are contacted and combined to combine the starting force of the composite vertical shaft main blade. In addition, after starting, the composite vertical shaft blades consisting of the driving vertical shaft blades and the main vertical shaft blades are continuously rotated in the same direction by a total of six vertical blades having the same directionality. If the wind turbine is driven at the same speed as the wind of the same size, the drive vertical shaft blades always rotate faster than the main vertical shaft blades, so that the rotational power of the drive vertical shaft blades is continuously supplied to the main vertical shaft blades.

The method of connecting the rotational powers of the drive vertical shaft blades and the main vertical shaft blades shown by the connection part (cp) of FIG. 8 (a) and the connection part (a) of FIG. 9 to provide a visual understanding. As one example, the part connecting the rotational power of two vertical axis blades can be designed and manufactured using various structures, shapes, and methods.

10, 11, and 12, the main vertical shaft blade composed of two vertical vertical blades having a left direction, the driving vertical shaft blade, and thus composed of a total of four vertical vertical blades, the combined angle is 90 ° composite vertical shaft blades Seemed to be an example. In comparison with this, in Fig. 13, another design and manufacturing method for connecting the rotational powers of the driving vertical shaft and the main vertical shaft, which rotate in the left direction (counterclockwise), that is, a coupling such as the connection part cp of Fig. 14 It has also been shown that all four straight vertical blades constituting the composite vertical axis blades rotate in one direction (left direction) while being located in a straight line.

In Fig. 15, when the vertical axis blades composed of the right vertical blades all rotate in the right direction as shown in Fig. 13, they are perpendicular to the four vertical blades constituting the compound vertical axis blade. Conceptually, the momentary path of passing wind flows.

Figure 16 is attached to the outlet side of the vessel, shown as pf (prevention funnel of reverse flow) on the outlet side of Figures 3, 4, and 5, in which wind flow outside the outlet side vessel may flow into the vessel. This is a diagram of a nearly square anti-reflection funnel that can prevent the case in advance, and when designing the outlet of the container to prevent the reverse air flow that can be introduced by the low pressure P _b at the outlet side inside the container, As an example, a method of designing an outlet or providing an anti-wind device such as FIG. 16 on the outlet side is presented.

Finally, Figures 17 and 18 also apply Bernoulli's principle, which can be designed and used in cases where larger rotor rotational powers are needed to drive wind turbines of varying generation capacity on a larger scale. Figure 3 shows a vessel of wings with three composite vertical axis wings, which creates an amplification effect of wind power by amplification of the wind turbine.

As shown in these two figures, it was also suggested that the composite vertical shaft blades of different numbers and sizes can be installed in terms of the number of straight vertical blades and the size of the radius of rotation of the blades through three composite vertical shaft blades installed inside the wing container.

When two or more composite vertical shafts are installed in one wing container, considering the speed and sine path of the wind flow through the inside of the container, the wind flow through the inside of the container, that is, wind power Since it can be utilized to the maximum, it is possible to generate the maximum rotational power for rotating the wind turbine gear by the installed vertical shaft wings.

The present invention applies Bernoulli's principle as can be seen in the representative figure, and re-utilizes even the internal pressure drop (internal pressure difference) of the vessel due to the change in the internal speed, for the amplification of the speed (amplification of the wind power). In addition to a "vessel with built-in wings" designed in such a way, it makes the most of the accelerated wind flow through the interior of the vessel without scattering, while maintaining a sine wind path, only a slight wind flow between the wings. The "two or more compound vertical shaft blades" embedded in appropriate locations within the vessel, which are easily maneuverable even though they form the blades of the vertical wind turbine generator. Therefore, the case of wind blades part of the present invention can not only deliver more powerful and richer synthetic rotational power of the blades to the wind turbine gear, but also, depending on the required power generation capacity, As many composite vertical axles as necessary may be built into the container to generate synthetic rotational power of the wings that can drive wind turbines. As described above, the wing buoy of the present invention, which incorporates two or more composite vertical axis wings, makes the most of the wind power through the inside of the container and the amplification of the wind by the more perfect application of the Bernoulli principle, and does not scatter the wind flow. In addition, multiple composite vertical vanes installed to maintain a sine path can achieve power generation efficiencies several times greater than any conventional vertical wind turbine.

1 is a photograph showing vertical wind turbines (VAWTs) employing non-directional vertical shaft blades in the form of a wind garden. Photo provided by the CIT (California Institude of Technology) in the Chosun Ilbo newspaper on December 3, 2009.
FIG. 2 is a cross-sectional view of the photo of FIG. 1 viewed from above to show a sinusoidal path of wind flow through the non-directional vertical shaft wings when the non-directional vertical shafts are arranged as shown in FIG. The direction of the blowing wind, the direction of rotation of the vertical blades, and the path of the wind flow passing between the arranged wings can be seen.
3 is a view for explaining the principle of Bernoulli applied to the wing container design, fabrication of the present invention.
4 is a method for generating an internal pressure difference due to a wind speed difference occurring inside the wing container and a method for utilizing the internal pressure difference, and a funnel pf for preventing the counterwind on the slot T and the outlet side serving as an inflow passage of the outside wind of the container. Bird's eye view of the wing container conceptually installed.
FIG. 5 is a cross-sectional view of the view of FIG. 4 from above, in which the wind flows through the inside of the container and the outside of the container flowing through the slot T;
6 is an enlarged view of the slot T and the wind flow flowing through the slot T in three directions in detail.
Fig. 7 is a composite vertical shaft blade (main vertical axis blade ⓐ + driving vertical axis blade ⓑ) designed and manufactured with a total of six vertical blades having a left direction and rotating in a left direction (counterclockwise).
FIG. 8A shows only the main vertical axis ⓐ of FIG. 7. FIG. 8B is an enlarged view of part ⓐ of FIG. 7A, and FIG. This is an enlarged view of part ⓑ.
9 is a view showing only the drive vertical shaft wing ⓑ of FIG. This part is combined with the part ⓐ in Fig. 8 and Fig. 8 (a).
Fig. 10 is a bird's eye view of the main vertical shaft blade designed with two straight vertical blades having left direction; It also has a left-hand drive and rotates in combination with a drive vertical shaft blade (drive vertical shaft blade shown in Fig. 11) designed at two perpendicular vertical blades at a 90 ° angle.
FIG. 11 is a view of a drive vertical shaft blade (part) of the composite vertical shaft blade, which is combined with FIG. 10 and is composed of a total of four straight vertical blades as shown in FIG.
FIG. 12 is a view of a composite vertical shaft wing having a straight vertical blade having a total of four left directions composed of the main vertical shaft wing of FIG. 10 and the driving vertical shaft wing of FIG. During rotation, the drive vertical and main vertical blades always maintain a 90 ° angle due to the structure of the joint cp of the two blades.
FIG. 13 is a view of a composite vertical shaft blade in which straight vertical blades are arranged in a straight line during rotation by a structural design different from that of the coupling portion cp shown in FIG.
FIG. 14 is an enlarged view of the engaging portion cp of the composite vertical shaft blade shown in FIG. 13. FIG.
FIG. 15 shows the extreme path of the wind flow through the composite vertical axis blades at right angles when four straight vertical blades having right direction are rotated in a straight line by the structure of the coupling portion as shown in FIG. A conceptual view of the cross section seen from above.
FIG. 16 is an enlarged view of a funnel of a reverse wind prevention square shape (in this case, octagonal form in this case) marked pf on the outlet side of the wing container shown in FIGS. 3, 4, and 5;
Figure 17 is a bird's eye view of a wing container with three composite vertical shaft wings, which is shown as another design example of a wing container applying the design and manufacturing principles of the present invention.
FIG. 18 is a sectional view of the bird's-eye view shown in FIG. 17 when viewed from above. FIG. The cogwheel, labeled WT, is a wind turbine gear, and the IW is an internal windflow guide wall that leads to more sinusoidal windflow inside the vessel.
19 is a view corresponding to a cross-sectional view from above as a view for better understanding of the practice of the present invention.

Designed and manufactured according to Bernoulli's principle, the ultimate wind amplification effect is generated inside the vessel, and it is equipped with complex vertical shaft blades with excellent rotational efficiency that does not scatter the wind flow. An embodiment of the present invention that can achieve efficiency will be described with reference to FIG. 19.

On the inlet ⑧ side shown in Fig. 19, six vertical vertical blades have the same shape as shown in Fig. 17, but the rotational direction is provided with a composite vertical shaft blade① that rotates in a clockwise direction (right direction), and on the inlet side on the outlet ⑨ side. It has a larger radius of rotation than one wing, and a heavy composite vertical shaft ② is installed.

The main reason for installing composite vertical shafts of different sizes and weights on the inlet and outlet sides is that the speed of the wind flow through the inside of the wing container is based on Bernoulli's principle. Since it is determined by the inverse relationship with the size, the wind speed is much faster in the section where the composite vertical axis blades are installed at the exit side than at the entrance side.

Therefore, the composite vertical shaft blade installed at the outlet side can rotate faster even if it is larger and heavier than the blade installed at the inlet side due to the increased wind speed, that is, the amplified wind power, and generates more powerful rotational power. By being able to transmit to a gear, it is possible to achieve higher power generation efficiency than any existing wind turbine generator.

At this time, inside the vane container of the present invention, a momentary and insignificant internal pressure difference is generated due to the speed difference of the wind flow generated by the Bernoulli principle, and in order to use such a phenomenon, the exit side (outlet-side composite vertical shaft wing is used). Slot T 'is installed in the section).

Thus, through the slot T⑩ installed on the bottom wall of the container (wall where slot T⑩ is installed in FIG. 19) of the part where the exit composite vertical shaft wing② is installed, the wind flow outside the container that flows in to fill the slight pressure difference therein. The wind is combined with the wind flow inside the vessel, and is transformed into more powerful wind energy and passes through the exit vertical axle, thus generating greater rotational power.

In addition, if a rectangular funnel (or outlet type) is attached to the outlet side of the container to prevent a backwind, or the outlet is designed and manufactured in such a way, even in a chaotic state of instantaneous wind flow. It is possible to prevent vortices or backwinds that may flow into the outlet side of the vessel through the outlet.

In the wing part container of the present invention designed and manufactured as described above, in the clockwise direction (right direction) ⑤ provided on the inlet ⑧ side, among the two composite vertical shaft wings installed in the container when the wind flows through the container. The rotating power generated from the rotating composite vertical shaft ① is transmitted as the power to rotate the wind turbine gear ④ counterclockwise through the attached cog wheel (see ⓓ in Figure 7), and exit ⑨ side The rotational power generated from the composite vertical shaft blade ② rotating in the counterclockwise direction (left direction) ⑥ installed in the shaft is changed to the right direction⑦ by the turning wheel ③, and then the wind turbine gear④ is clocked. It is transmitted by the power to rotate in the direction.

As a result, the rotational power of the composite vertical shaft blade ② on the exit side is a rotational power in the opposite direction that is different in magnitude from that of the composite vertical shaft blade ① on the inlet side, and is transmitted to the wind turbine gear ④ as asymmetrical rotational power. Can drive wind turbines.

Embodiment of the invention described so far, it can be applied to the case of wind blades (case of wind blades part) for installing two or more composite vertical shaft wings shown in Figures 17, 18, through which, Using design, fabrication methods and established techniques and theories, it is possible to design and build any wing container that can meet the numerous power generation specifications of the various wind turbines used according to the required power generation capacity. Exemplify.

Claims (2)

By increasing and concentrating the speed of the wind flow through the container, the representative view of "applying Bernoulli's principle to have an amplification effect of the wind power", designed to have the same structure as shown in Figures 3, 4 and 5 When designing and manufacturing vane vessels that perform the functions described in "Details of the Invention," it not only eliminates the slight internal pressure differences that may occur inside the vessel, but also ensures that the perfect Bernoulli principle is applied. To install a slot, which is an elongated groove as shown in Fig. 6, which serves as a wind inflow passage from the outside to the inside of the container to have a higher amplification effect of the wind power, and the backwind prevention exit structure as shown in Fig. A wing container with a device. 7, 8, 9, 10, 11, 12, 13, and 14 are composed of the drive vertical shaft wing and the main vertical shaft blade, not only scatter the path of the wind flow, Composite vertical shaft blades designed with directional vertical blades to set the desired direction of rotation.

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