JP2013000645A - Wind power water cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that it is impossible for a conventional wind power water cleaning device to efficiently use wind energy fluctuating with a place or time, the conventional wind power water cleaning device being equipped with a windmill unit for converting wind power to rotation power by a windmill and a water stream generating unit for rotating a screw by the rotation power to generate a water stream.SOLUTION: The screw 9 includes a blade supporter 40 which is rotated by a screw shaft 8 for transmitting the rotation power, and blades 42, 142 which are rotatably supported via a blade shaft 41 on the outer periphery of the blade supporter 40. The screw 9 further includes angle control mechanisms 38, 138 which automatically increase or decrease inclination angles 51, 151 between the blade 42 and the surface 53 of rotation of the screw 9 according to the rotation speed of the screw 9, and a cylindrical body 32 which forms a water passage 58 surrounding the screw 9 between the body itself and the blade supporter 40.

Description

  The present invention relates to a wind water purification apparatus provided with a wind turbine unit that floats on the surface of a water area and converts wind power into rotational power by the wind turbine, and a water flow generation unit that generates a water flow by rotating a screw with the rotational power, In particular, the present invention relates to a configuration of a water flow generation unit capable of generating a stable water flow according to the size of wind power.

  Conventionally, when water stays in a closed system such as lakes, reservoirs, and the back of sea bays, water agitation and red tide occur, water agitation is performed using an electric motor or an underwater pump or screw driven by an engine. However, from the viewpoint of energy saving, wind energy, which is the kinetic energy of the wind, is used to generate rotational power by converting the wind energy into rotational energy by the windmill, and the screw in water is directly driven to rotate by the rotational power. In addition, a technique for generating a water flow and performing water agitation is known (for example, see Patent Document 1).

JP 2001-47084 A

However, the above-described technology has a problem that it is not possible to efficiently use wind energy that varies greatly depending on location and time.
For example, when the wind power is low and the wind power is low, if the rotational power of the screw is smaller than the drag force that the blade of the screw receives from water during the rotation, the screw cannot be rotated. Conversely, when the wind power is high and the wind power is high, if the rotational power of the screw becomes excessive compared to the drag that the blade receives during rotation, the screw rotates at a very high speed, and the reaction force received from the large amount of water flow that is generated, In downflow, the wind water purification device is lifted to near the surface of the water and falls out of balance. To do. For this reason, there existed a problem that the lifetime of an apparatus deteriorated and it was difficult to generate | occur | produce the stable water flow.
Therefore, from the viewpoint of improving the rotation startability and installation stability, the angle between the blade and the screw rotation surface (hereinafter referred to as “inclination angle”) is set to be small from the beginning, so that the magnitude of the wind force is affected. First, it is conceivable to reduce the drag received by the blade and the amount of water pushed out by the blade. However, there has been a problem that even if wind power increases, a sufficient amount of water flow cannot be obtained, and wind energy is wasted.
In addition, since wind energy with large time fluctuations is used, the rotational power of the screw fluctuates greatly with time, and the generated water flow tends to be pulsating, and the surroundings of the screw are almost only provided with a float. It is in an open state. For this reason, most of the generated water flow becomes a pulsating flow and is dispersed to the surroundings, and there is a problem that a sufficient amount of a stable water flow cannot be obtained.

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
That is, in Claim 1, the wind water provided with the windmill unit which floats on the water surface of a water area and converts wind power into rotational power by a windmill, and the water flow generation unit which rotates a screw with this rotational power and generates a water flow In the purification device, the screw includes a blade support that is rotated by a screw shaft to which the rotational power is transmitted, and a blade that is rotatably supported on the outer periphery of the blade support via the blade shaft. An angle control mechanism that automatically increases or decreases an inclination angle formed by the blade and the rotation surface of the screw according to the rotation speed of the screw, and a cylinder that forms a water channel surrounding the screw between the blade support and the blade body. It is provided.
The offset control mechanism according to claim 2, wherein the angle control mechanism shifts the drag center of water during the rotation of the screw from the rotation axis of the blade shaft to the upper side of the water flow flowing along the direction of the rotation axis of the screw. The tilt angle is increased in accordance with an increase in the rotational speed of the screw by providing a structure and a return spring that urges the blade shaft around the axis and sets the blade shaft to a predetermined initial position.
According to a third aspect of the present invention, the angle control mechanism includes an offset structure that shifts the drag center of water during the rotation of the screw from the rotation axis of the blade shaft toward the lower side of the water flow that flows in the direction of the rotation axis of the screw; The blade shaft is provided with a return spring that urges the blade shaft around the shaft to set the blade shaft at a predetermined initial position, thereby reducing the tilt angle in accordance with an increase in the rotational speed of the screw.
According to a fourth aspect of the present invention, an auxiliary power mechanism that supplements the shortage of rotational power from the windmill is attached.

Since this invention was comprised as mentioned above, there exists an effect shown below.
That is, in the first aspect, when the rotational power of the screw is small in a low wind force state, by first reducing the inclination angle, the cross-sectional area of the portion that receives resistance from the water in the blade that is moving in water (hereinafter referred to as the cross-sectional area) , “Resistance cross-sectional area”) can be reduced, the drag received by the blade can be reduced, and the rotational startability of the screw can be improved. During the stable rotation after the screw starts rotating, the amount of water pushed out by the blade can be increased by increasing the tilt angle, and a sufficient water flow can be secured. When the rotational power of the screw is high in a high wind force state, the screw can be easily rotated without reducing the tilt angle, and a sufficient water flow can be secured even after the screw has been rotated and activated. And when the rotational power increases with time and the screw rotates at high speed, the amount of water pushed out by the blade is reduced by reducing the tilt angle, and the wind water purification device is prevented from falling over and flooding due to the reaction force of the water flow Thus, the installation stability of the wind water purification device can be improved. Further, the cylindrical body relaxes the pulsating flow due to the flow path resistance while passing through the water channel around the screw, and is not unnecessarily dispersed to the surroundings without being released halfway, and is uniform and sufficient. A series of water streams can be secured. In this manner, the angle control mechanism and the cylinder can improve the rotation startability, the installation stability, and the water flow stability, and the wind energy can be used efficiently.
According to the second aspect of the present invention, the simple structure including the offset structure and the return spring can ensure sufficient water flow while improving the rotational startability of the screw even in a low wind force state, and can reduce and maintain the apparatus cost. It is possible to improve the performance.
According to the third aspect of the present invention, the installation stability of the wind water purification apparatus can be improved even in a high wind force state by a simple configuration including the offset structure and the return spring, and the apparatus cost can be reduced and the maintainability can be improved. be able to.
According to the fourth aspect of the present invention, even when the screw cannot be rotationally driven in an extremely low wind force state, the screw can be rotationally driven by the rotational power from the auxiliary power mechanism, so that the wind water purification device can be always driven stably.

It is a side view which shows the whole structure of the wind-water purification apparatus concerning this invention. It is an external view of a windmill, Comprising: Fig.2 (a) is a top view of a windmill, FIG.2 (b) is a side view similarly. It is side surface partial sectional drawing of a transmission support apparatus. It is side surface sectional drawing of a screw. It is a top view of the screw corresponding to a low wind force state. FIG. 6A is a side view of the screw at the blade initial position, FIG. 6B is a side view of the screw at the blade rising position, and FIG. 6C is the screw at the time of returning to the blade initial position. FIG. It is a top view of the screw corresponding to a high wind force state. FIG. 8A is a side view of the screw at the blade initial position, FIG. 8B is a side view of the screw at the blade substantially horizontal position, and FIG. 8C is a view when the blade is returned to the initial position. It is a side view of a screw. It is a side view of a flow guide. It is also a plan view. It is a side view which shows the whole structure of the wind power purification apparatus of another form.

Hereinafter, embodiments of the present invention will be described in detail.
First, the whole structure of the wind water purification apparatus 1 concerning this invention is demonstrated with reference to FIG. 1 thru | or FIG.
The wind water purification apparatus 1 includes a wind turbine unit 2 that floats on a water surface 4 in a water area and converts wind power into rotational power by a wind turbine 5, and a water flow generation unit 3 that generates a water flow by rotating a screw 9 with the rotational power. The water flow generating unit 3 is suspended below the wind turbine unit 2.

  In the wind turbine unit 2, a base 7 is mounted by fixing a plate-like base body 11 on a plurality of floats 12 made of a hollow material such as stainless steel or plastic, or a solid material such as wood or polystyrene foam. Is formed, and the transmission support device 6 is erected at a substantially central portion in plan view of the base body 11.

  The transmission support device 6 includes a pipe 14 in which a flange portion 14a is fastened and fixed to the upper surface of the base body 11 by a plurality of bolts 13, and bosses 15 and 16 fitted to upper and lower portions inside the pipe 14, respectively. The transmission shaft 20 is rotatably supported by the bosses 15 and 16.

  The transmission shaft 20 includes an upper shaft portion 20a and a lower shaft portion 20b. Then, after the tapered portion 20b1 of the lower shaft portion 20b is inserted into the concave portion 20a1 at the lower end of the upper shaft portion 20a from below, the opening portion on the side surface of the pipe 14 is inserted into the screw hole drilled in the radial direction of the upper shaft portion 20a. The bolts 21 and 21 are screwed from 14b and the top ends of the bolts 21 and 21 are pressed against the side surfaces of the tapered portion 20b1, thereby integrally connecting the upper shaft portion 20a and the lower shaft portion 20b. .

  The upper and lower ends of the upper shaft portion 20a are rotatably supported by the bearing 17 of the boss 15 and the bearing 18 of the boss 16, respectively. 23, and the lids 22 and 23 are fastened and fixed to the bosses 15 and 16, respectively, so that the upper shaft portion 20a is not detached from the bosses 15 and 16.

  That is, the transmission shaft 20 is composed of a plurality of members, that is, an upper shaft portion 20a and a lower shaft portion 20b, and only the upper shaft portion 20a is provided with bearings 17 and 18 with the pipe 14 to prevent it from coming off. Therefore, it is easy to incorporate the transmission shaft 20 into the pipe 14 and the assembly of the transmission support device 6 is improved. The wind turbine 5 is connected to the upper end of the transmission shaft 20 of the transmission support device 6.

  The wind turbine 5 sandwiches the vertical axis 25 extending coaxially and upward with the transmission shaft 20, the pair of blades 26 and 26 supported by the vertical axis 25, and the upper and lower ends of the blades 26 and 26. The disk-shaped top plate 27 and bottom plate 28 are arranged in this manner.

  A flange portion 25b is formed at the lower end of the vertical axis 25. After the bottom plate 28 is placed on the upper surface of the flange portion 25b, a plurality of bolts 24 are screwed from above the bottom plate 28, and the bottom plate 28 is inserted. The flange portion 25b and the flange portion 20a2 at the upper end of the upper shaft portion 20a are fastened together.

  A flange portion 25a is also formed at the upper end of the vertical axis 25. After the top plate 27 is brought into contact with the lower surface of the flange portion 25a from below, a plurality of bolts 24 are screwed from above the flange portion 25a. The top plate 27 is fastened to the flange portion 25a.

  The pair of blades 26 and 26 are disposed between the top plate 27 and the bottom plate 28. The blades 26 and 26 are both halved, and sandwich the vertical axis 25 in a plan view so that the convex side is directed in a clockwise direction (hereinafter referred to as “forward rotation direction”) F. The inner edges 26 a and 26 a are fixed around the longitudinal axis 25 while being arranged at point symmetry positions.

  The upper and lower ends of the blades 26 and 26 are fixed to the lower surface of the top plate 27 and the upper surface of the bottom plate 28, respectively, whereby the rigidity of the blades 26 and 26 can be increased. The life of the parts is improved by preventing them from being deformed even if 26 and 26 rotate at high speed.

  In the water flow generation unit 3, a screw shaft 8 extends coaxially with the transmission shaft 20. A flange portion 8 a is formed at the upper end of the screw shaft 8, and the flange portion 8 a is fastened to the flange portion 20 b 2 at the lower end of the lower shaft portion 20 b by a bolt 30.

  As a result, when the concave side of the blades 26 and 26 receives wind, the windmill 5 rotates in the forward rotation direction F, and the rotational power is not changed from the rotation direction to the screw from the transmission shaft 20 to which the vertical axis 25 is connected. Is transmitted to the shaft 8. A screw 9 is connected to the lower end of the screw shaft 8 as described later, and a flow guide 10 is disposed so as to surround the screw 9 and the screw shaft 8.

Next, the screw 9 will be described with reference to FIGS.
In the screw 9, a flange portion 8 b at the lower end of the screw shaft 8 is fastened to the upper surface of the columnar blade support body 40 by a bolt 39, and a plurality of outer peripheral side surfaces of the upper half portion of the blade support body 40 are provided on the outer peripheral side surface. Cylindrical support recesses 40 a are formed at equal intervals radially around the rotation axis 46 of the blade support 40. Further, the lower half of the blade support 40 is hollowed to reduce the weight of the screw 9 and its lower end is formed into a spherical surface to suppress resistance during rotation of the screw 9.

  In the support recess 40 a, a screw portion 43 a constituting the inner half of the shaft support 43 is screwed and fixed to the blade support 40 via a washer 45, and the outer half of the shaft support 43. The shaft main body 41a of the blade shaft 41 is rotatably inserted into the shaft support cylinder 43b constituting the shaft.

  A ring-shaped blade receiver 41b having an outer diameter larger than that of the shaft main body 41a and substantially the same as the inner diameter of the support recess 40a is fitted and fixed near the blade support 40 in the shaft main body 41a. The blade receiver 41b is engaged with a locking portion 44a at one end of a torsion coil-shaped return spring 44 wound around the shaft support cylinder 43b, while the other end of the return spring 44 is connected with the shaft. It is locked to the support cylinder 43b. As a result, even if the blade shaft 41 rotates around the rotation axis 47 due to an external load, the blade shaft 41 is moved to the initial position in the no-load state shown in FIG. It is always energized in the direction returning to 49.

  Further, a fixing bolt 41c is screwed into the outer end of the shaft main body 41a, and the mounting cylinder portion 42a is detachable between the fixing bolt 41c and the stepped recess 41b1 on the inner edge of the blade receiver 41b. It is attached to. The blade 42 is configured by fixing a fan-shaped front wing 42b and a rear wing 42c before and after the forward rotation direction F across the mounting cylinder portion 42a.

  As described above, the three support recesses 40a are formed at equal intervals on the same horizontal plane on the outer periphery of the blade support 40, and the blade shaft 41 to which the blade 42 is attached is formed in the support recesses 40a. However, it is supported so as to be rotatable in a state in which it is constantly urged to return to the initial position 49.

  Further, when the screw 9 having such a configuration rotates in the forward rotation direction F, water is pushed downward by the three blades 42 rotating in the forward rotation direction F, and accordingly, the rotation of the screw 9 is rotated. A downward flow 34 is generated along the direction of the axis 46.

  Here, the blade 42 is inclined obliquely upward in the forward rotation direction F and is rotated so as to return to the initial position 49 and the outer periphery of the blade 42 and the rotation of the screw 9 in a side view. The inclination angle formed with the surface 53 is set to 51. The center D of the drag that the blade 42 receives from water (hereinafter referred to as “drag center”) D is offset by a length 57 from the rotation axis 47 of the blade shaft 41 toward the upper side of the downward flow 34. Set to the moved position.

  In the case of the present embodiment, such an offset structure 56 is configured such that the center angle 54 of the front wing 42b is larger than the center angle 55 of the rear wing 42c, as shown in FIG. The drag center D is shifted to the upper side of the downward flow 34 by enlarging the area 42c. The drag center D may be adjusted by changing the shapes of the front wing 42b and the rear wing 42c, and the configuration of the offset structure 56 is not particularly limited.

The operation of the angle control mechanism 38 including the offset structure 56 and the return spring 44 will be described.
When the rotational power of the screw 9 is small in a low wind force state, as shown in FIG. 6A, the initial inclination angle 51 is set small to reduce the resistance cross-sectional area of the blade 42 and rotate. The drag P0 received from the water at startup is reduced. Thereby, even if it is a low wind force, the drag P0 can be easily exceeded and the screw 9 can be rotationally started.

  When the wind turbine 5 starts to rotate stably and the rotational speed increases after the screw 9 starts rotating, the drag concentrated on the drag center D increases from PO to P1, as shown in FIG. 6B. To do. When the moment M1 in the increasing direction of the inclination angle of the blade 42 due to the drag force P1 becomes larger than the moment M2 in the decreasing direction of the inclination angle of the blade 42 due to the elastic force of the return spring 44, the inclination angle of the blade 42 is 51. And stabilizes at an inclination angle 52 where both moments M1 and M2 are balanced. As a result, the blade 42 changes from the initial position 49 to the rising position 50, the amount of water pushed out by the blade 42 increases, and the generated downward flow also increases from 34 to 34H, thereby securing a sufficient amount of water. The amount of water can be freely adjusted by changing the inclination angle 52 by adjusting the elastic force of the return spring 44.

  Thereafter, as shown in FIG. 6C, when the wind force decreases and the drag decreases from P1 to the original P0, and the moment M1 due to the drag P0 becomes smaller than the moment M2 due to the return spring 44, the blade 42 Also, the inclination angle decreases from 52 to the original 51. Thus, when the blade 42 returns from the rising position 50 to the initial position 49, the amount of water pushed out by the blade 42 also decreases, and the generated downward flow also returns from 34H to 34.

Next, another type of screw 9A as described above will be described with reference to FIGS.
The screw 9A changes the blade 42 of the screw 9 to a blade 142 having a different drag center position so that the wind water purification apparatus 1 can cope with a high wind force state.

  Also in the screw 9A, the blade shaft 41 is constantly urged in a direction to return to the initial position 149 in the no-load state shown in FIG.

  Further, a mounting cylinder part 142a of the blade 142 is detachably attached to the shaft main body 41a of the blade shaft 41. The blade 142 is configured by fixing the rear wing 142c.

  Accordingly, three support recesses 40a formed at equal intervals on the same horizontal plane are formed on the outer periphery of the blade support 40, and a blade shaft 41 to which the blade 142 is attached is formed in the support recess 40a. In a state of being always urged so as to return to the initial position 149, it is rotatably supported.

  Similarly to the screw 9, the screw 9 </ b> A having such a configuration rotates in the normal rotation direction F around the rotation axis 46 and rotates the three blades 142 rotating in the normal rotation direction F. As a result, water is pushed downward, and a downward flow 34 </ b> A is generated along the direction of the rotational axis 46 of the screw 9.

  Here, the blade 142 is inclined obliquely upward in the forward rotation direction F, and at the initial position 149 shown in FIG. 8A, the blade 142 is biased so as to return to the initial position 149. The inclination angle formed by the outer peripheral edge of the blade 142 and the rotating surface 53 of the screw 9A is set to 151 as viewed. The drag center DA of the blade 142 is set at a position shifted by a length 157 from the rotational axis 47 of the blade shaft 41 to the lower side of the downward flow 34A.

  In the case of this embodiment, such an offset structure 156 makes the center angle 155 of the rear wing 142c larger than the center angle 154 of the front wing 142b so that the area of the rear wing 142c is increased as shown in FIG. The drag center DA is shifted to the lower side of the downward flow 34A by enlarging the area of 142b. The drag center DA may be adjusted by changing the shapes of the front wing 142b and the rear wing 142c, and the configuration of the offset structure 156 is not particularly limited.

The operation of the angle control mechanism 138 including the offset structure 156 and the return spring 44 will be described.
When the rotational power of the screw 9A is high in a high wind force state, as shown in FIG. 8A, even if the initial inclination angle 151 is not set small, the drag PA0 exceeds the drag 9A. It is possible to easily start rotation in the forward rotation direction F and to secure a sufficient downward flow 34A.

  When the rotational speed of the windmill 5 increases after the screw 9A starts rotating, the drag concentrated on the drag center DA increases from PAO to PA1, as shown in FIG. 8B. When the moment MA1 in the direction of decreasing the tilt angle of the blade 142 due to the drag PA1 is greater than the moment MA2 in the direction of increasing the tilt angle of the blade 142 due to the elastic force of the return spring 44, the tilt angle of the blade 142 is 151. And stabilizes at an inclination angle 152 where both moments MA1 and MA2 balance. As a result, the blade 142 changes from the initial position 149 to the substantially horizontal position 150, the amount of water pushed out by the blade 42 decreases, the generated downward flow also decreases from 34A to 34AL, and the wind water purification apparatus 1 is caused by the reaction force of the water flow. Prevents falling and flooding.

  Thereafter, as shown in FIG. 8C, when the wind force decreases and the drag decreases from PA1 to the original PA0, and the moment MA1 due to the drag PA0 becomes smaller than the moment MA2 due to the return spring 44, the blade 142 The tilt angle increases from 152 to the original 151. Thereby, when the blade 142 returns from the substantially horizontal position 150 to the initial position 149, the amount of water pushed out by the blade 42 also increases, and the generated downward flow also returns from 34AL to 34A, and a sufficient downward flow 34A can be secured.

Next, the flow guide 10 will be described with reference to FIGS.
The flow guide 10 is vertically suspended from the lower surface of the base body 11 and a plurality of stays 31 that are spaced apart from each other at equal intervals on the circumference, and a lower portion of the stay 31 is fixed to an outer peripheral side surface. The cylindrical body 32 is made up of.

  The screw shaft 8 is disposed substantially in the center of the cylindrical body 32 in plan view, and the blade support 40, the blade shaft 41, and the blade 42 are provided on the screw shaft 8, and the outer peripheral surface of the blade support 40 And a sufficiently long water channel 58 in a ring shape in plan view is provided between the cylindrical body 32 and the inner peripheral surface of the cylindrical body 32.

  As a result, the suction flow 33 first sucked intermittently from the gap between the adjacent stays 31 above the cylindrical body 32 toward the upper opening of the cylindrical body 32 passes through the water channel 58 as the downward flow 34. In the meantime, the pulsating flow is relaxed and flows out as a uniform discharge flow 35 from the lower end opening of the cylindrical body 32. The series of water streams 33, 34, and 35 changes to a uniform and sufficient amount of water as the time passes. The length 36 of the cylindrical body 32 is preferably set to a diameter length 37 or more which is the maximum diameter of the screw 9. This is because if the length is shorter than the length 37, the effect of reducing the pulsating flow due to the flow path resistance is reduced, and a uniform and sufficient amount of water flow 33, 34, 35 cannot be secured.

  That is, with the configuration shown in FIGS. 1 to 10, the wind turbine unit 2 that floats on the water surface 4 in the water area and converts wind power into rotational power by the wind turbine 5 and the screw 9 is rotated by the rotational power to rotate the water flow. In the wind water purification apparatus 1 including the water flow generation unit 3 that generates 33, 34, and 35, the screws 9 and 9A include a blade support 40 that is rotated by a screw shaft 8 to which the rotational power is transmitted, Blades 42 and 142 are rotatably supported on the outer periphery of the blade support 40 via a blade shaft 41, and inclination angles 51 and 151 formed by the blades 42 and 142 and the rotation surface 53 of the screw 9 are set. Angle control mechanisms 38 and 138 that automatically increase and decrease according to the rotational speed of the screws 9 and 9A, and a water channel 58 that surrounds the screws 9 and 9A Since the cylindrical body 32 formed between the blade support 40 and the blade support 40 is provided, when the rotational power of the screw 9 is small in a low wind power state, the inclination angle is first reduced to 51, By reducing the resistance cross-sectional area, the drag P0 received by the blade 42 can be reduced, and the rotational startability of the screw 9 can be improved. During the stable rotation after the screw 9 starts rotating, by increasing the inclination angle from 51 to 52, the amount of water pushed out by the blade 42 can be increased and a sufficient water flow can be secured. When the rotational power of the screw 9A is high in a high wind force state, the screw 9A can be easily rotated without reducing the inclination angle, and a sufficient water flow can be secured even after the screw 9A is rotated. When the rotational power increases with time and the screw 9A rotates at a high speed, the inclination angle is decreased from 151 to 152, thereby reducing the amount of water pushed out by the blade 142, and the wind water purification apparatus 1 is counteracting the water flow. It is possible to improve the installation stability of the wind water purification apparatus 1 by preventing falling or flooding by force. Further, the cylindrical body 32 reduces the pulsating flow due to the flow path resistance while passing through the water channel 58 around the screw 9 and is not unnecessarily dispersed to the surroundings without being released halfway. A sufficient amount of water stream 33, 34, and 35 can be secured. In this manner, the angle control mechanisms 38 and 138 and the cylindrical body 32 can improve rotational startability, installation stability, and water flow stability, and wind energy can be used efficiently.

  Further, the angle control mechanism 38 is a downward flow 34 that is a water flow that flows along the direction of the rotation axis 46 of the screw 9 from the rotation axis 47 of the blade shaft 41 to the drag center D of the water when the screw 9 rotates. The rotation speed of the screw 9 is provided by providing an offset structure 56 that shifts by a length 57 on the upper side of the screw and a return spring 44 that urges the blade shaft 41 around the axis and sets it to a predetermined initial position 49. The inclination angle is increased from 51 to 52 in accordance with the increase in the rotation angle, so that the simple structure including the offset structure 56 and the return spring 44 can sufficiently increase the rotational startability of the screw 9 even in a low wind force state. Therefore, the water flow 34 can be secured, and the apparatus cost can be reduced and the maintainability can be improved.

  In addition, the angle control mechanism 138 has a drag force center DA of the water when the screw 9A rotates, from a rotation axis 47 of the blade shaft 41 to a downward flow 34A that is a water flow flowing in the direction of the rotation axis 46 of the screw 9A. By providing an offset structure 156 that shifts by a length 157 on the lower side and a return spring 44 that biases the blade shaft 41 around the axis and sets it to a predetermined initial position 149, the rotational speed of the screw 9A can be reduced. Since the inclination angle is decreased from 151 to 152 in accordance with the increase, the installation stability of the wind water purification apparatus 1 can be improved even in a high wind state by a simple configuration including the offset structure 156 and the return spring 44. It is possible to reduce the apparatus cost and improve the maintainability.

  In the screw 9 and 9A described above, the downflows 34 and 34A are generated, but the blades 42 and 142 are turned upside down around the rotation axis 47 of the blade shaft 41 in the forward rotation direction F. An upward flow can be generated by inclining obliquely downward. And also in this case, the rotational stability of the screw in the low wind state and the installation stability of the wind water purification apparatus 1 in the high wind state can be improved by the same configuration and action as the angle control mechanisms 38 and 138 described above. It can be done.

  Next, another embodiment of the wind water purification apparatus 1A as described above will be described with reference to FIG. The direction indicated by the arrow L in FIG. 11 is the left direction of the wind water purification apparatus 1A, and the positions and directions of the members described below are based on the left direction.

  The wind water purification apparatus 1A compensates the shortage of the rotational power from the wind turbine unit 2 of the wind water purification apparatus 1 by the rotational power from the newly provided auxiliary power unit 59, and the water surface 4 in the water area. A windmill unit 2A that floats upward and converts wind power into rotational power by the windmill 5; the water flow generation unit 3 that generates a water flow by rotating a screw 9; and auxiliary rotational power is supplied to the water flow generation unit 3 And the auxiliary power unit 59.

  A plurality of floats 12 of the wind water purification apparatus 1 are added and connected to the right, and an expanded base body 11A is placed and fixed thereon, thereby forming a base 7A. The windmill unit 2A and the auxiliary power unit 59 are juxtaposed on the left and right on the base 7A.

  The auxiliary power unit 59 includes an electric motor 62 that outputs auxiliary rotational power to the transmission support device 6A of the wind turbine unit 2A, a battery 63 that supplies electric power to the electric motor 62, and power generation that supplies electric power to charge the battery 63. And a controller 64 for controlling the driving of the electric motor 62 and the generator 60.

  In the electric motor 62, a bevel gear 68 is fixed to a tip portion of an output shaft 67 extending leftward via a clutch 66, and the bevel gear 68 is externally fixed to the transmission shaft 20. 65, and the rotational power output from the electric motor 62 is input to the transmission shaft 20 from the output shaft 67 through the bevel gear pair 65 and 68 so as to be connectable and disconnectable. In addition, the screw 9 can be rotationally driven via the screw shaft 8.

  The transmission shaft 20 is provided with a rotational speed sensor 70 for detecting the state of generation of rotational power by the windmill unit 2 </ b> A, and the rotational speed sensor 70 is connected to the controller 64. Based on the rotation number signal, a drive / stop signal is transmitted from the controller 64 to the electric motor 62.

  Further, the battery 63 is provided with a wattmeter 71 for detecting the remaining power amount of the battery 63, and the wattmeter 71 is also connected to the controller 64, and a remaining power signal from the wattmeter 71 is provided. Based on the above, a power generation / stop signal is transmitted from the controller 64 to the generator 60.

  In such a configuration, when it is determined by the rotational speed sensor 70 that there is a high wind power state and it is not necessary to supply auxiliary rotational power to the water flow generation unit 3, the controller 64 applies the clutch 66 to the clutch 66. An “OFF” signal is transmitted, the connection between the auxiliary power unit 59 and the transmission shaft 20 is cut off, and the screw 9 is driven to rotate only by the rotational power from the windmill unit 2A.

  When it is determined by the rotational speed sensor 70 that the wind force is low and it is necessary to supply auxiliary rotational power to the water flow generation unit 3, a clutch “ON” signal is transmitted from the controller 64 to the clutch 66. At the same time, a drive signal is transmitted to the electric motor 62, and rotational power is transmitted from the auxiliary power unit 59 to the transmission shaft 20, and the screw 9 is rotated by rotational power from both the wind turbine unit 2A and the auxiliary power unit 59. Drive.

  About the power supply of the said electric motor 62, sufficient electric power is charged to the battery 63 only with the electric power from the solar panel 61 normally. If the wattmeter 71 reveals that the necessary sunlight cannot be obtained due to cloudy or rainy weather and the remaining power amount of the battery 63 is lower than the limit power amount, the controller 64 generates a generator. A power generation signal is transmitted to 60, the generator 60 is driven, and sufficient power is supplied to the battery 63.

  In this embodiment, the generator 60 is provided. However, since the sunshine time of the water area where the wind water purification apparatus 1A is disposed is sufficiently long, sufficient power is always supplied to the battery 63 using only the solar panel 61. When the battery can be charged, the generator 60 can be omitted.

  That is, since the auxiliary power unit 59 that is an auxiliary power mechanism that supplements the rotational power from the wind turbine 5 is attached, even if the screw 9 cannot be driven to rotate in an extremely low wind force state, the rotational power from the auxiliary power unit 59 The screw 9 can be rotationally driven, so that the wind water purification apparatus 1A can be always driven stably.

  The present invention includes a windmill unit that floats on the water surface of a water area and converts wind power into rotational power by the windmill, and a water flow generation unit that generates a water flow by rotating a screw by the rotational power. It can be applied to the device.

1.1A Wind water purification device 2 Wind turbine unit 3 Water flow generation unit 4 Water surface 5 Wind turbine 9 / 9A Screw 8 Screw shaft 32 Cylindrical body 33/34/35 Water flow 34 / 34A Downflow (water flow)
38/138 Angle control mechanism 40 Blade support 41 Blade shaft 42/142 Blade 44 Return spring 46 Screw rotation axis 47 Blade shaft rotation axis 51/52/151/152 Inclination angle 53 Rotation surface 56/156 Offset structure 58 Waterways 59 Auxiliary power unit (auxiliary power mechanism)
D / DA Drag center

Claims (4)

  In the wind water purification apparatus comprising a wind turbine unit that floats on the surface of the water area and converts wind power into rotational power by the wind turbine, and a water flow generation unit that generates a water flow by rotating the screw by the rotational power, the screw is A blade support that is rotated by a screw shaft to which the rotational power is transmitted; and a blade that is rotatably supported on the outer periphery of the blade support via the blade shaft; An angle control mechanism that automatically increases or decreases an inclination angle formed by the screw according to a rotational speed of the screw, and a cylindrical body that forms a water channel that surrounds the screw between a blade support and a wind power Water purification device.   The angle control mechanism includes an offset structure that shifts the drag center of water when the screw rotates from the rotation axis of the blade shaft toward the upper side of the water flow that flows along the direction of the rotation axis of the screw, and the blade shaft. The wind power according to claim 1, wherein the inclination angle is increased in accordance with an increase in the rotational speed of the screw by providing a return spring that biases the shaft around the axis and sets the spring at a predetermined initial position. Water purification device.   The angle control mechanism includes an offset structure that shifts the center of the drag force of the water when the screw rotates from the rotation axis of the blade shaft toward the lower side of the water flow that flows in the direction of the rotation axis of the screw, and the blade shaft. 2. The wind water purification according to claim 1, wherein the inclination angle is decreased according to an increase in the rotational speed of the screw by providing a return spring that is biased around and set to a predetermined initial position. apparatus.   The wind power purification apparatus according to any one of claims 1 to 3, further comprising an auxiliary power mechanism that supplements a shortage of rotational power from the windmill.

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