WO2016030905A2

WO2016030905A2 - Vertical axis wind mill with popping up drag door pans and wind pressure release system

Info

Publication number: WO2016030905A2
Application number: PCT/IN2014/000554
Authority: WO
Inventors: Mohamed Ali M.
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-08-28
Filing date: 2014-08-28
Publication date: 2016-03-03
Anticipated expiration: 2017-02-28
Also published as: WO2016030905A3

Abstract

It is a vertical axis wind mill with sets of popping up drag door pans (2) attached to the lateral side of the central axis (1). Popping up drag doors (3) are pivotally attached to the pans (2). The opposite pans (2) have doors (3) openable towards opposite directions. The popping up drag doors (3) are aerodynamically shaped. When the wind lashes, one pan (2) with closed drag doors (3) is pushed and at the same time the drag doors (3) of the opposite pan [2) opens towards opposite direction and allows the wind to pass other side of the pan (2). Thus two opposite pans (2) create the imbalance of forces and the central axis (1) is rotated. The aerodynamically shaped drag doors (3) also create a life force which also exert force to the pans (2) in the same direction. Thus the central axis (1) gets the pushing force of the wind and lift force generated by the aerodynamic shaped drag doors (3). The rotation of the central axis (1) is converted in to mechanical force and then into electrical force using and an alternator. The doors [12) are pushed by the excess wind and let the excess wind to pass without excreting force on the pans (2).

Description

The present invention relates to VERTICAL AXIS WIND MILL WITH POPPING UP DRAG DOOR PANS AND WIND PRESSURE RELEASE SYSTEM.

There have been many proposals to generate electricity using the verti jal axis wind mills. These wind mills have rigid slim vertical rotor blades or paps which register the thrusting force of the moving wind. But these types of wijid mills fails to register the maximum thrusting force of the striking wind. Maximum quantity of wind escapes through the space between the rotor blad|es or pans without delivering the thrusting force in full. Usually, the rotor blades pr the pans of the vertical axis wind mills, intended to register the wind force, aire laterally fixed. While one. rotor blade or pan resisting the wind, the opposite blade or pan should not resist the wind. But in the conventional types pf vertical axis wind mills, the opposite blade or pan also resist the wind to some extent. A fraction quantum of the total force registered by one rotor blade lor pan is nullified by the opposite rotor blade or pan by providing some resistanpe to the wind.

These problems are overcome by the present invention which provides opportunity to register the maximum thrusting force of the striking wind.

The specialities and novelties in this invention are

1. The popping up drag door pans [no.2] are used in the place of usual rol|or blade or pan of the conventional wind mills.

2. These popping up drag door pans [no.2] of this wind mill can register the maximum thrusting force of the striking wind.

3. « In all the conventional systems when there is a heavy wind which is detrimental to the windmill, there is provided a halt system which stops t|he functioning of the windmill in total. The windmill is restarted soon after the wind blowing comes to favourable speed. But according to ^* this invention theTe is provided a wind pressure release system which diffuses the wind pressure registered over the surface of the popping up drag door pans [no.2], by releasing some wind through the pressure release doors [no.12] and the windrqill continue to function without stoppage. This is an another speciality of this invention.

4. While the popping up drag door pan [no.2] with closed doors registers t|he thrusting force of the wind by resisting the wind, this popping up drag door pan [no.2] is pushed back by the wind force and in turn the vertical axis [no.1] rotated.

The popping up drag door/s [no.3] are aerodynamically shaped airfojls. While the wind is passing through the gaps in between the opened doors of tjhe opposite side popping up drag door pan [no.2], aerodynamic forces like DRAG and LIFT forces are produced. The LIFT force is acting towards the outward direction and gives circular motion to the popping up drag door pan [no.2] and in turn rotates the vertical axis [no.l].

Thus the opposite side popping up drag door pan [no.2] with openjed doors also tregister the force of the blowing wind which creates DRAG apd LIFT forces' and exert some positive force in the direction of the vertical a^is [no.l] rotation. Thus the two opposite popping up drag door pans [no.2] separate y provides rotational force to the vertical axis [no. l] in the same direction. So the maximum quantum of the force of the striking wind can be converted in o mechanical force by both of the opposite pans. This can generate mofe ' electricity than the conventional wind mill generators.

5. Conventional wind mills, the main factors governing the power production are wind speed, density of the wind and altitude. High altitude provides turbulence free wind. So, only the high pillar can provide quality power. So the pillar cost is more. But in the present invention ; HORIZANTAL AXIS WIN D MILL WITH LATERAL SETS OF SLIDING DOOR PANS can produce quality power even in low altitude . So the pillar cost can be reduced.

6. This needs no yawing system and also pitching of blades.

According to the Invention, there is provided a VERTICAL AXIS WIND MILL WITH POPPING UP DRAG DOOR PANS AND WIND PRESSURE jRELEASE SYSTEM comprising of a vertical axis [no. l] with which the popping ¹ up drag door pans [no;2] are attached laterally and vertically in multiple numbers at equal distances and at equal angles. The popping up drag door/s [no.3] which are attached with the popping up drag door pans [no.2] by means of pivotal hinges, the pressure release doors [no.12] which is built-in with each the popping up drag door pans [no.2] and a force transferring arrangement which transfer the mechanical force from the vertical axis [no.l] to tljie generator.

There now follows a description of some particular embodiments of tljie invention, by way of examples only, with reference to the drawings in which

Figure 1 shows the example of front elevation of vertical axis [no. l] with the popping up drag door pans [no.2] assembly in which a set of 2 >r more popping up drag door pans [no.2] are attached with the vertical axis [no. l ] and each popping up drag door pan [no.2] having a popping up drag door/s [no.3] at vertical position and each popping up drag door [no.3] have one built-in pressure release door [no.12].

Figure 2 shows another example, the elevation view of the vertical ax is [no. l ] with popping up drag door pans [no.2] assembly in which a set of 2 r more popping up drag door pans [no.2] are attached with the vertical ax is [no. l] and each popping up drag door pan [no.2] ^: is having popping u drag door/s [no.3] at vertical position and each popping up drag door [no.3] ha e one built-in pressure release door [no.12].

Figure 3 shows an another example, the front elevation of the vertic al axis [no. l] with popping up drag door pans [no.2] pole [no.8] assembly in which each popping up drag door pan [no.2] having popping up drag dooif/s [no.3] at vertical position with built-in pressure release door [no.12].

Figure 4 is an example of schematic diagram which shows horizom al cross section of vertical axis [no. l] with 4 nos. of popping door pans [no.2] assembly in which each popping up drag - door pan [no.2] is having aerodynamically shaped popping up drag door/s [no.3] at vertical position a id with built-in pressure release door [no.12].

Figure 5 is another example of schematic diagram which shows tjie horizontal cross sections of vertical axis [no. l] with 3 nos. of popping up drag door pans [no.2] assembly in which each popping up drag door pans [no. ] having aerodynamically shaped popping up drag door/s [no.3] at vertical position and with built-in pressure release door [no.12].

Figure 6 is an example of schematic diagram which shows the horizontal cross sections of vertical axis [no.l] with 2 nos. of popping up drag- door pais [no.2] assembly which shows action of the aerodynamic forces like DRAG and LIFT acting on the aerodynamically shaped aerofoils which are used as the popping up drag doors [no.3].

Figure 7 is an another example of schematic diagram which shows the horizontal cross sections of vertical axis [no.l] with 2 nos. of popping up drag door pans [no.2] assembly with the first method of wind pressure release system which is at normal wind condition.

Figure 8 is an example of schematic diagram which shows the horizontal cross sections of single popping up drag door pan [no.2] with closed doors and with the first method of wind pressure release system which is at normal wind condition.

Figure 9 is an another example of schematic diagram which shows the horizontal cross section of single popping up drag doOr pan [no.2] with closed doors and with the first method of wind pressure release system which is at heavy wind blowing condition.

Figure 10 is an example of schematic diagram which shows the horizontal cross section of single popping up drag door pan [no.2] with closed doors and with the second method of wind pressure release system which is at normal wind blowing condition.

Figure 11 is an another example of schematic diagram which shows the horizontal cross section of single popping up drag door pan [no.2] with Qlosed doors and with the second method of wind pressure release system which is at heavy wind blowing condition.

Figure 12 is an example of schematic diagram which shows the horizontal cross section of single popping up drag door [no.3] at closed position and with the second method of wind pressure release system which is at normal wind blowing condition.

Figure 13 is an another example of schematic diagram which shows the horizontal cross section of single popping up drag door [no.3] at closed position and with the second method of wind pressure release system which is at heavy wind blowing condition.

< Figure 14 is an example of a single popping up drag door [no.3] with door stoppers [no.6] and door angle stopper [no.6A].

Referring to the figures 1, 2 and 3 it can be seen that the fro it elevation , the figures 4 and 5, it can be seen the horizontal cross section view of the assembly of vertical axis [no.l] with popping up drag door pans [no.2] in which the vertical axis [no.l] is the central axis of this instrument and the popping up drag door pans [no.2] which comprises of one frame and the popping up drag door/s [no.3] with door stoppers [no.6] are attached to the frame * vertically by means of pivotal hinges with the frame at the pivots [no.5 ] and these door/s freely opens at only one side of the popping up drag door pan [no.2]. The popping up drag doors [no.3] of the two opposite popping up drag door pans [no.2] opens towards the opposite directions. The popping up drag door/s [no.3] ca be a single or multiple in numbers in each popping up drag door pan [no.2]. The popping up drag door pans [no.2] are in plurality attached laterally with the vertical axis [no.l] at equal distances and at equal angles.

The popping up drag doors [no.3] are aerodynamically shaped aerofo Is with at least one pressure release door [no.12] which is at the surface of ea ;h popping up drag door [no.3] and open able to the back side of that popping ψ drag door [no.3]. *

When the popping up drag door/s [no.3] are closed or kept in contact with the frame of the popping up drag door pans [no.2] the air flow is blocke d. The popping up drag door/s [no.3] do not cross to the other side of the oppi ig up drag door pan [no.2] because of the door stoppers [no. 6]. When tlie poppingup drag door/s [no.3] of a popping up drag door pan [no.2] are opened, the wind is allowed to flow to the other side of that popping up drag door pan [no.2] through the gaps in between the opened doors. The opening of doors is limited to narrow angle that is lesser than the right angle, by the door anj;le_¾ stoppers [no. 6 A] provided.

These popping up drag door pans [no.2] . can be in set of 2 or 3 or 4 or 5 or 6 in numbers are laterally fixed with the vertical axis [no.l] at equal distances. Within the surface area of each popping up drag door [no.3] at least one pressure release door [no.12] which is open able to the back side of the popping up drag door [no.3], is fixed by means of pivotal hinge fixed with the popping up drag door [no.3]. The force transfer system which consist of a gear or a belt pulley or a chain pulley [no.7] attached at the one end of the vertical axis [no.l] is meant for the transmission of mechanical force registered by the assembly of vertical axis [no.l] and the popping up drag door pans [no.2] to the alternator [no.10] to produce electricity. The^■ vertical axis [no. l] is kept in vertical position by the vertical pole/s [no.8] and the horizontal beams [no 9] which are connecting the poles [no. 8]. The bearings [no.4] allows the vertical axis [no.l] to spin freely.

A wind pressure releasing system is necessary to save the wind mill, when there is a heavy wind strikes the wind mill.

There are two methods of pressure release system symbolically suggesled in this invention.

First method [figs. 7, 8 and 9] of pressure releasing system which is to be used in an environment with heavy wind blowing areas, is side vane pressure release system.

It consists of at least one hinged pressure release door [no.12] to cover up a same size hole at the surface of each popping up drag door [no.3] and op en able to the back side of that popping up drag door [no.3]. At normal condition when there is a normal and favourable wind, the pressure release doors [no.^' 2] are kept closed by the support of door closing roller [no.13] at the back. Tiis door closing roller [no.13] is a projection attached to door closure rod [no.: 4] which is connected with side vane [no.15] at its lateral end and spring laden at the other side. A side vane [no.12] is a small sized popping up drag door pan but horizontally attached at the lateral end the door closure rod [no.14]. The side vane [no.12] is composed of a frame with ; at least one popping up drag door [no.3] but without pressure release doors [no.12]. This pressure release system is positioned at the back side of the popping up drag door pans [no.2^ and the side vane [no.12] is positioned at the extreme lateral side of the popping up drag door pans [no.2]. Side vane [no.15] is hung vertically upside down and attached at the lateral end of the door closure rod [no.14] by means of a set pf cams [no.16]. the second method is spring pressure method.

The second method [figs. 10, 11 , 12, and 13] of pressure releasi g system which is to be used in an environment with a moderate heavy wind blowing, is the spring backed and hinged pressure release door [no. 12]. It consists of at least one pressure release door [no.12] to cover up a same si: e hole at the surface of each popping up drag door [no.3] and open able to the back side of that popping up drag door [no.3], a half round ring [no.17], a pressure release door spring [no.18] and spring tensioner. The one end of the half round ring [no.17] is attached to the back surface of the popping up drag door [no.3] in between the hinges of popping up drag door [no.3] and the hing is of the pressure release door [no.12]. The other end of half round ring [no.17] is inserted in to a hole at the surface of the pressure release door [no.12]. A pressure release door spring [no.18] is inserted in to the half round ring [no.1 7] and this spring is capped and resisted by the back surface of the popping up drag door [no.3] at one end and with the spring tensioner [no.19] at the othsr end. The spring tensioner [no.19] a clamp made up of solid metal with a hole at the centre through which the half round ring [no.17] is inserted and a screw at the right angle to hold spring tensioner [no.19] with the half round ring [no.17]. The spring tensioner [no.19] helps to increase the tension of the pressure release door spring [no.18] to a required level.

When the wind blows at normal speed the pressure release doors [no.1 2] are at closed position with the back support of the pressure release door spring [no.18]. If the wind blows at high speed, the pressure release door [no.12] is opened to the requirement and allows a quantum of the thrusting wind to escape. Then the total wind pressure registered over the surface of the popping up drag door pan [no.2] with closed doors^" is diffused to some extent to avoid damage to the windmill by the occasional rash wind.

The complete device operates as follows.

When [while] the wind blows over the wind mill and strikes the popping up drag door pans [no.2]. The popping up drag doors [no.3] of some popping up drag door pans [no.2] are forced to close and kept in closed position, [n such a position these popping up drag door pahs [no.2] are forced by the blowing wind to rotate around along with the vertical axis [no.l]. At the same time, the

wind forcefully opens the popping up drag doors [no.3] of the opposite side popping up drag door pans [no.2] and the wind passes to the other side Df those opposite popping up drag door pans [no.2] through^* the gaps in between the aerodynamically shaped popping up drag doors [no.3] without hindrance. In this way these opposite popping up drag door pans [no.2] projects no resistance to the wind.

Since the popping up drag door/s [no.3] are aerodynamically shaped aerofoils. The inner facing side is slightly concave and the outer facing side is convex in shape. when the wind passes through the gaps in between the opened doors, t e leading edges of the popping up drag doors [no.3] splits . the wind in to two layers. One layer passes in contact with the inner facing surface of the popping up drag doors [no.3] and a force called DRAG force is generated. The air pressure of this side is more. The other layer of split up wind passes in conta t with the outer facing surface of the popping up drag doors [no.3]. The passir g wind layer travels a long way this side. So the wind pressure is lesser than ti e inner facing side. A force called LIFT force is generated towards outward surface of the doors. This force pushes these opposite popping up drag do< r pans [no.2] with opened doors further towards forward.

Thus the opposite side popping up drag door pans [no.2] with opened doors do not resist the wind and at the same time produces the force calh d 'lift' and helps to turn the vertical axis [no.l] along with the popping up drag door pans [no.2] with closed doors. ^*

Both the popping up drag door pans [no.2] with closed doors and the popping up drag door pans [no.2] with opened doors, simultaneously transfer the force to the vertical axis [no.l] and continuously rotating the vertical axis [no. 1] in one direction.

The first method [figs. 7,8 and 9] of the wind pressure releasing systelm operates in the following way.

When there is a heavy wind, for example, say above 75 kilometres speed, the side vane [no.15] is pushed back up to horizontal position. When the Side vane [no.l 5] is pushed back, the door closure rod [no.14] is turned and the door closing roller [no.13] is moved away to permit the pressure release doors [no.12] to open and allow a quantum of the thrusting wind to escap e. Then the total wind pressure registered over the surface of^' the popping up dng door pans [no.2] with closed doors is diffused to some extent to avo|id damage to the windmill by the occasional rash wind.

The second method [figs. 10,1 1 , 12 and 13] : of the wind pressure releasing system operates in the following way.

If the wind blows at high speed, the wind forces the pressure release door [no.12] to open back to the requirement and such opening allows a quantum of the thrusting wind to escape. Then the total wind pressure registered over the surface of the popping up drag door pan [no.2] with closed doors is diffused to some extent to avoid_x damage to the windmill by the occasional rash wind. The level of tension of the pressure release door spring [no.18] is adjusted by the spring tensioner [no.19] to allow the pressure release do|or [no.12] to open as to the requirements. ^*

The force transferring system consists jof the gear or belt pulley or chain pulley [no.7] which is firmly attached to the \ vertical axis [no.l] at its e id is also rotated and in turn rotates the contacting gear or pulley [no.l l] attached with the alternator [no.10] and produces electricity.

Claims

I claim

1. A vertical axis wind mill with popping up drag door pans and wind pressure release system comprising of a vertical axis, popping up drag door pais which are attached to the vertical axis, pressure release system meant to diffuse the wind pressure registered over the surface of the popping up drag door pais when the wind is blowing heavily, force transferring system meant for the transmission of force to the alternator and the poles, beams meant to hold tjie vertical axis at vertical position.

la. The device as claimed in claim 1 wherein the vertical axis is the cential axis of the assembly in which the popping up drag door pans are laterally attached to the vertical axis in such a mode that the vertical axis is rotatable by the popping tup drag door pans.

lb. The device as claimed in the claims 1 and la wherein each popping up drag door pan comprising of an outer frame, popping up drag door/s laterally and pivotally fixed with the frame in single or multiple numbers and door ang le stoppers.

2. The device as claimed in claim l b wherein the popping up drag door/s comprising of rigid surfaced and aerodynamical ly shaped airfoils, door stoppe rs and pressure release doors.

2a. The device as claimed in claim lb wherein the door angle stopp rs includes any arrangement or projection attached with the popping up drag door pan to restrict the opening of popping up drag door/s to an angle which is less than the right angle.

2b. The device as claimed in claim 2 wherein the door stoppers include any projection or attachment at the edges of the popping up drag door ^">y lengthwise or breadth wise and arranged in a manner that do not permit t le popping up drag door to cross over to the other side of the popping up drig door pans.

3. The device as claimed in the claims 1 to 2 wherein the popping up dr ig door/s of each popping up drag door pan is any suitable rigid surfac d arrangement connected with the frame by hinges and open able only one side of the popping up drag door pan, in single or in multiple numbers.

3 a. The device as claimed in the claim 3 wherein the hinges are any suitable arrangement that enables pivotal action of the popping up drag door/s aid permits the popping up drag door/s to open and close.

3b. The device as claimed in the above claims wherein^* the popping up drig door/s of each popping up drag door pans are aerodynamically shaped aerofo Is which are capable to experience aerodynamic forces.

4. The device as claimed in the claim 1 wherein the pressure release system comprising of 'side vane pressure releasing · system' to be used in an environment with heavy wind blowing areas or 'spring pressure method' to pe used in an environment with moderate wind blowing areas.

4a. The device as claimed in the claim 4 wherein the side vane pressure releasing system comprising of pressure release door, door closing roller, door closing rod, side vane and a set of cams.

4b. The device as claimed in the claim 4 wherein the spring pressure method' comprising of pressure release doors, half round ring, pressure release door spring and spring tensioner.

5. The device as claimed in the claims 4a and 4b wherein pressure releake door which can cover up a same size hole at the surface of each popping up drag door and at least one such pressure release door hinged at the surface _>f each popping up drag door and open able to the back side of that popping up drag door and includes any arrangement that is open able with a specific for ;e exerted by an unusual speed of wind and permit the wind to cross over to ti te other side of the popping up drag door.

5a. The device as claimed in the claim 4a wherein door closing rolljer includes any moveable arrangement that do not permit pressure release doors open at normal speed of wind and permit to open the pressure release door if the blowing wind exceeds a specific speed.

5b. The device as claimed in the claim 4a wherein door closure rod includes any arrangement connecting the side vane and the door closing roller, and conveying the action of the side vane to door closing roller.

6. The device as claimed in the claim 4a wherein the side vane is fixed at the lateral end of the door closure rod comprising of a frame with at least o ie popping up drag door vertically and pivot ably fixed with the frame but withe ut pressure release doors, and that includes any arrangement that do not turns or swings the door closure rod and the door closing roller to and fro by the wind blowing up to a specific speed and get the movement only by a high spe≥d wind and also includes any flat surfaced arrangement with or without any doors. 6a. The device as claimed in the claim 4b wherein the cams includes aiy type of cams attached to the side vane enable the side vane to turn the' door closure rod.

6b. The device as claimed in the claim 4b wherein the half round ri ig includes any arrangement that holds the tension spring in a position to enable to exert a specific pressure on the back surface of the pressure release door.

7. The device as claimed in the claim 4b wherein the pressure release dcor spring is a spring in any form meant to exert a specific pressure qn the bask surface of the pressure release door and holds the pressure release door closed until the wind attains a specific speed.

7a. The device as claimed in the claim 4b wherein the spring tensior.er includes any arrangement to vary the tension of the pressure release door spri ng as to the- level of tensioning of the pressure release door spring is adjusted to enable the pressure release door to open at a required wind speed.

7b. The device as claimed in the claim 1 wherein the force · transferring system includes gears or belt pulleys or chain gears at the end of the vertical axis or any arrangement capable to transfer the torque force of the vertical axis to ijhe alternator.

8. The device as claimed in the claim 1 wherein the poles, beams meant to hold the vertical axis at vertical position and includes any arrangement enable keep the vertical axis at vertical position.

8a. Vertical axis wind mill with popping up drag door pans and wijiid pressure release system substantially as here in described and illustrated in t|he figures of the accompanying drawing.