BG1049U1 - Device for wind energy conversion - Google Patents

Abstract

The device finds application in the conversion of wind energy. It comprises a fixed base with a hollow vertical shaft resting on bearings therein, the lower portion of the latter being fixed to a leading away shaft (2), while its upper portion is shaped as a carousel with symmetrically and uniformly arranged radial arms (3). At each of the ends of the arms, at an equal distance from the center, there are fixed immovable and vertically orientated bearing bushes (4), in which a respective vertical shaft (5) rests the upper portion of which ends with a vertical panel (6) symmetrically orientated towards the shaft (5). Centrally in the carousel there rests a vertical orientating shaft (7) ending with a rigidly fastened wind indicator (8). Each of the shafts (5) is connected to the orientating shaft (7) through a respective mechanical gear (9) with a gear ratio 1:2. The panels (6) are fixed to the shafts (5) and, through their gears (9), they are pre-orientated to the arms (3) so that one of the panels (6), which is mounted on the arm (3) perpendicular to the guide of the wind indicator (8), is orientated perpendicularly to the guide of the wind indicator (8), while each of the others is rotated towards the preceding one at an angle alpha = 360/2n, where n is the number of the arms (3).

Description

Technical field

The utility model refers to a device with a vertical axis of rotation used for the conversion of wind energy, which is used for the production of electricity, for propulsion of water pumps and other wind power equipment.

BACKGROUND OF THE INVENTION

A device consisting of a vertical shaft bearing in a fixed base is known, and two helical opposing grooves are fixed along its height. In the cross section of the vertical shaft, the grooves are formed as semicircles, arranged one way in relation to the shaft. The height of the chutes curves around the vertical shaft at least one hundred and eighty degrees.

This device has a low efficiency, which is why it has not found a real wind power application, and is mainly used for advertising purposes.

A wind energy conversion device (BG 62455) is known, comprising at least two groups of blades fastened about a vertical rotating central axis, the blades being made with an opening which is closed with a valve pivotally mounted on the blade axis and provided with valve for turning the valves.

This solution has a low efficiency since the working area of the blades is limited to only half a turn (180 °).

The technical nature of the utility model

The task of the utility model is to create a simplified design wind energy conversion device that has a high efficiency.

The task is solved by creating a device consisting of a fixedly fixed base in which a hollow vertical shaft, which at its bottom is fixedly connected to a drive shaft, transmits the movement to a subsequent conversion unit. The hollow shaft at the top is shaped like a carousel with symmetrically and evenly spaced radial arms. At the ends of each arm, a fixed, vertically oriented bearing sleeve is fixed at equal distances from the center. A vertical shaft is mounted in each sleeve, with a vertically fixed, symmetrically oriented panel attached to the upper end of which is fixed. In the center of the carousel is a vertical orientation shaft, ending at the upper end with a firmly fixed windscreen. According to the utility model, each panel shaft is connected to the orientation shaft by means of a mechanical gearbox with a gear ratio of 1: 2, so that the rotation of the orientation shaft, which is the leading one, ensures the unidirectional rotation of the shafts of the panels which are driven. The mechanical gear unit can be designed as a gear, with one guide gear wheel mounted on each panel shaft and a fixed guide wheel with twice as many teeth as the guide gear wheels, such as between the drive gear, on the steering shaft. and the guide gears bear a free parasitic gear.

Another possible embodiment of the mechanical gear is by means of a chain gear, with as many guide wheels as the number of panels fixed to the steering shaft. Each drive shaft is mounted on a fixed drive wheel fixed at a height corresponding to the height of the respective drive sprocket wheel, with the number of gear wheels teeth being twice the number of drive wheel teeth. .

According to the utility model, the panels are fixed to the shafts and through their gears are pre-oriented to the shoulders so that one of the panels, which is mounted perpendicular to the wind direction arm, is oriented perpendicular to the wind direction guide, and each subsequent panel is rotated relative to the previous alpha angle = 360 / 2n, where η is the number of shoulders.

It may be possible to provide safety devices above the shaft bearings in order to prevent water and abrasive particles from entering the bearings.

1049 Sh

The hollow shaft safety device may have the form of a cup facing downwards, at the bottom of which there is a central opening through which the hollow shaft passes. The bottom of the cup is firmly attached to the bottom of the carousel, so that the side of the cup covers the fixed base in which the hollow shaft is supported.

The guarding device of the panel shaft may take the form of a cup facing downwards with a central opening at the bottom through which the shaft of the panel passes. The safety device is fixed centrally around the panel shaft just below the drive wheels. Centrally located under the protective device, the bearing sleeve is provided with a vertical side so that the cup edge covers the edge of the sleeve without resting therein.

It is possible that the safety device of the orientation shaft is fixed centrally around the orientation shaft directly below the guide wheels and has the form of a downward-facing cup with a central opening at the bottom through which the orientation shaft passes. Centrally beneath the guideline of the orientation shaft is a cover shaped like a circular plate with a molded inner side pointing upwards so that the guideline of the guideline of the guidance shaft covers the side of the lid without resting therein.

For areas with lower winds, the device can be constructed with longer rotating carousel arms, with a larger number and usable panel area.

Explanation of the annexed figures

Figure 1 is a vertical sectional view AA of the wind energy conversion device;

Figure 2 is a top view of a wind energy conversion device.

Exemplary implementation of the utility model

The wind energy conversion device consists of a hollow shaft 1 bearing in a fixedly fixed base 13, with the lower hollow shaft fixedly connected to the drive shaft 2, and at its upper part shaped like a carousel with four symmetrically and evenly spaced radial arms 3. At the ends of each arm 3, at a uniform distance from the center, a fixed, vertically oriented bearing sleeve 4 is fixed, in which a corresponding vertical shaft 5, terminating at its upper end with a vertical, symmetrically oriented shaft 5, is supported. n nel 6. Centrally in the carousel is mounted vertically oriented shaft 7 ending at its upper end with a firmly fixed vane 8. Each shaft 5 is connected to the orienting shaft 7 through a respective mechanical transmission 9 with a ratio 1: 2. The panels 6 are fixed to the shafts 5 and through their gears 9 are pre-oriented to the shoulders 3 such that one of the panels 6, which is mounted perpendicular to the guide 8 of the windscreen 8, is oriented perpendicular to the guide of the windscreen 8, and each subsequent one is rotated relative to the previous alpha angle = 45 °.

Four drive chain wheels 10 are mounted on the orientation shaft 7 above each other. One drive chain wheel 11 is mounted on each shaft 5, so that each drive wheel 11 is positioned opposite its respective drive wheel 10 from the orientation shaft 7. The drive chain wheels 11 have twice as many teeth as the drive sprocket 10, thus providing a gear ratio 9 between the drive shafts 5 and the drive shaft 7 with the chain drive 9.

Over the place of bearing of the hollow shaft 1, the orientation shaft 7 and the shafts of the panels 5 safety devices 12 are provided in order to prevent water and abrasive particles from entering the bearings of the bearings.

The safety device 12 of the hollow shaft 1 is in the form of a downward-facing cup, the bottom of which has a central opening through which the hollow shaft 1. The bottom of the cup is firmly attached to the underside of the carousel, so that the side of the cup covers the end of the fixed base. 13, in which the hollow shaft 1 is mounted.

The safety device 12 of the shaft 5 is in the form of a downward-facing cup with a central opening at the bottom through which the shaft 5 of the panel 6 runs. The safety device is mounted centrally around the shaft 5 directly below the guide wheels 11. Centrally located under the protective device, the bearing sleeve 4 is equipped with a vertical board so that

1049 W The cup board covers the bushing without resting on it.

The protective device of the orientation shaft 7 is fixed centrally around the orientation shaft 7 directly below the guide wheels 10 and has the form of a downward-facing cup with a central opening at the bottom through which the orientation shaft 7 passes. Centrally below the protective device of the orientation shaft 7 is a lid 14 shaped like a circular plate with a molded inner side pointing upwards so that the side of the protective device of the orientation shaft 7 covers the side of the lid 14 without resting therein.

Utility model action

Pre-orientation of panels

The panels 6 are fixedly fixed to the shafts 5, and through the corresponding gears 9, are oriented in advance with the arms 3 such that one of the panels 6, which is mounted perpendicular to the guide 8, is oriented perpendicular to the guide 8, and each subsequent is rotated relative to the previous angle α = 360 / 2n, where η is the number of arms 3.

Device operation

Under the influence of the wind, the wind indicator 8 together with the orienting shaft to which it is attached rotates and orientates in the wind direction, so that if the wind direction does not change, the orientation pole remains stationary.

When the wind exerts pressure on the panels 6, which are located at the edges of the arms 3, the carousel rotates in a certain direction, depending on the initial orientation of the panels 6. Since the gear ratio of the gear connecting the axes 5 to the orientation shaft 7 is 1: 2, it for a complete revolution of the hollow shaft 1 of the carousel axis 5 of the panel, respectively. the rigidly attached panel 6 performs a half turn. When the wind direction changes, the wind indicator 8, respectively. the associated orientation shaft 7 rotates at a certain angle. By means of gear 9, the change in wind direction is reflected on the shaft 5 by rotating it at a twice smaller angle. Thus, one of the panels 6, which is supported perpendicularly to the windscreen 8 guiding arm 3, is always perpendicular to the wind direction, and each subsequent one is rotated at an angle alpha = 360 / 2n, where η is the number of arms 3. This increases the effective working area of the panels 6 and increases the efficiency of the device.

The rotary motion of the hollow shaft 1 through the drive shaft 2 is transmitted to a subsequent energy conversion device.

Safety devices mounted above the hollow shaft bearing position, the orientation shaft and the panel shafts protect the bearing beds from water and abrasive particles and thus reduce friction losses.

Claims (7)

Claims A wind energy conversion device comprising a fixedly fixed base in which a vertical shaft is mounted, characterized in that the shaft (1) is hollow and at its lower part is fixedly connected to a drive shaft (2), and at its upper part it is shaped as a carousel with symmetrically and evenly spaced radial arms (3), at whose ends at equal distances from the center is fixed one fixed, vertically oriented bearing bushing (4), in which the corresponding vertical shaft (5) ending at the top with a corresponding vertical n, symmetrically oriented to the shaft (5) of the panel (6), centered in the carousel is a vertical orientation shaft (7), terminating at its upper end with a firmly fixed wind indicator (8), with each shaft (5) connected to the orientation shaft (7) by means of a corresponding mechanical gear (9) with a gear ratio of 1: 2, wherein the panels (6) are fixed to the shafts (5) and through their gears (9) are pre-oriented to the shoulders (3), that one of the panels (6) which is mounted perpendicular to the windscreen guide (8) mo (3) is oriented perpendicular to the guide of the wind indicator (8) and each subsequent one is rotated relative to the previous alpha = 360 / 2n, where η is the number of arms (3). A wind energy conversion device according to claim 1, characterized in that the mechanical gear (9) is 1049 W as a chain drive, with as many guide wheels (10) mounted on top of the orientation shaft (7) as the number of panels (6) and one driven shaft on each panel (5). a chain wheel (11) positioned opposite the respective guide wheel (10) of the orientation shaft (7) and providing a 1: 2 gear ratio. 3. Wind energy conversion device according to claim 1, characterized in that the mechanical gear (9) is designed as a gear, with a guide gear along the orientation shaft (7) and each shaft ( 5) a drive gear is mounted on one of the gears, providing the gear ratio between the shafts of the panels (5) and the orientation shaft (7) 1: 2, the interaction between the drive wheel and the drive wheel is carried out by a parasitic gear wheel. 4. A wind energy conversion device according to any one of claims 1, 2 or 3, characterized in that, to each shaft (1), (5) and (7), a safety device ( 12). 5. Wind energy conversion device according to claim 4, characterized in that the safety device (12) of the hollow shaft (1) is in the form of a downward-facing cup with a central opening at the bottom through which the hollow shaft (1) passes. , with the bottom of the cup firmly attached to the bottom of the carousel, and the side of the cup covering the fixed base (13). 6. Wind energy conversion device according to claim 4 or 5, characterized in that the safety device (12) of the panel shaft (5) is in the form of a downward-facing cup with a central opening at the bottom through which the shaft ( 5) and is fixed centrally around the shaft (5), directly below the guide wheels (11), and the centrally located bearing sleeve (4) is provided with a vertical side, so that the cup edge covers the edge of the sleeve (4) without to build on it. Wind energy conversion device according to one of Claims 4, 5 or 6, characterized in that the safety device (12) of the orientation shaft (7) is in the form of a downward-facing cup with a central opening at the bottom through which passes the orientation shaft (7) and is fixed centrally around the orientation shaft (7) directly below the guide wheels (10), and centrally below it is a lid (14) with a molded board on the inside so that the cup edge covers the lid side (14) without drawing on it.