JP5296249B1 - Dragonfly blade-like blades, J-shaped cross-section blades, and J-shaped back-to-back blades used for rotor blades with shrouds, linear blowers, and linear wind power generators - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a large-diameter rotor blade for a rotor blade with a shroud, a linear blower, or a linear wind power generator, it is difficult to manufacture by the conventional method, or even if it can be manufactured, it is extremely expensive. It became difficult to sell.
A dragonfly blade-like blade or a dragonfly blade-like blade configured such that a cross section in a blade width (chord) direction is stepped from a tread surface 111, a kick-up surface 112, and a slope (inclined surface) 113 J-shaped cross-section blades composed of a kick-up surface with a kick-in length and a slope (inclined surface), excluding the treads that make up the blades, and J-shaped cross-section blades composed of two back-to-back blades One of the blades of the back-to-back cross section is a rotor blade for a shroud rotor blade, a linear blower, or a linear wind power generator.
[Selection] Figure 7

Description

A shroud that is stationary with respect to a platform such as a terrain feature or a fuselage and has at least one of an armature or a field magnet, and a shroud that rotates with respect to the shroud to determine whether it is a field magnet or an armature When manufacturing blades used in rotating blades with a shroud, linear blowers, and linear wind power generators that are configured in combination with a rotating duct with at least one of them, they are easy to manufacture, robust, lightweight, and can be enlarged The present invention also relates to a dragonfly blade-like blade, a J-shaped cross-section blade, and a J-shaped back-to-back blade.

A shroud that is stationary with respect to a platform such as a terrain feature or a fuselage and has at least one of an armature or a field magnet, and a shroud that rotates with respect to the shroud to determine whether it is a field magnet or an armature In a rotor blade with a shroud, a linear blower, or a linear wind power generator that is configured by a combination with a rotating duct in which at least one of them is disposed, the driving unit and the power generating unit occupy a width of about 10 cm in the diameter direction. For this reason, if an attempt is made to produce a rotor blade with a shroud, a linear blower, or a linear wind power generator with a diameter of about 20 cm, the exclusive portion of the blade becomes 0%, and the rotor blade with a shroud, the linear blower, or the linear wind power generator. The machine cannot be realized. On the other hand, if the diameter is 200 m, the occupied width of the drive unit or the power generation unit is 10 cm, and the diameter of the rotating shaft is 20 cm, the occupancy rate of the blade is 99.8%. A linear blower or a linear wind power generator can be configured.

Lifting blades used in helicopters and the like and drag blades used in blowers and the like increase the diameter and the amount of airflow by about the square of the diameter. However, in order to rotate the lift blade and the drag blade with the power connected to the rotation shaft at the center of the blade, the required power is increased by about the cube of the diameter of the lift blade, and the diameter of the drag blade is increased. Increases by a factor of 4-5. For this reason, even if a powerful power that can be used at present is searched from all over the world, a lift blade such as a helicopter has a diameter of about 30 m even if a turboshaft engine is used, and a drag blade such as a blower is about 8 m with a motor. Even if an internal combustion engine is used, about 12 m is the limit of production, and helicopters and blowers having diameters larger than that are extremely difficult to realize due to insufficient power. In addition, in a wind turbine generator that generates power by receiving wind and rotating blades, increasing the diameter increases the amount of power generation by about a factor of two, but the strength of the blades needs to be strengthened by a factor of about the cube of the diameter. For example, in a structure that supports a heavy object such as a blade or a nacelle with only one support such as a propeller type wind power generator, the diameter that can be manufactured is approximately 100 m from the limit of the strength of the support. It was about.

On the other hand, in a rotor blade with a shroud and a linear blower having a drive unit at the blade tip, an increase in lift and an increase in air volume due to an increase in diameter are about 2 mm in diameter, as in conventional helicopters and blowers. In order to increase by multiplication, the required power of the power is almost the same as the increase in diameter, or an increase of about 1.5 power. For this reason, both the lift blades having a diameter exceeding 30 m in the rotor blade with the shroud and the drag blades having a diameter exceeding 10 m in the linear blower can be easily manufactured in terms of the required power of the drive unit. Moreover, in a linear wind power generator, since a shroud that does not rotate is covered around the device, a plurality of support columns are attached to the shroud and fixed to a terrain feature to support heavy objects such as blades. There is no problem and it is easy to manufacture a linear wind generator with a huge diameter.

As described above, the rotor blade with a shroud, the linear blower, and the linear wind power generator have characteristics that the advantages can be exhibited as the diameter is larger than that of the conventional helicopter, blower, or propeller type wind power generator. However, if the drive unit or power generation unit, which is a combination of an armature and a field magnet, is configured with the blade tip of the blade for power or power generation, there are the following five problems, and there is a large diameter shroud attached. Manufacturing rotor blades, linear blowers, and linear wind power generators is not so easy.

When a blade with a very large blade diameter, for example, a blade with a diameter of 200 m, is used to make a shroud-equipped rotor blade, a linear blower, or a linear wind power generator with a combination of an armature on the shroud side and a field magnet on the rotary duct side, Second, rotating ducts and blades are affected by temperature changes and centrifugal force, causing expansion and contraction in the diameter direction, that is, in the radial direction. In particular, when a radial gap is used in which the gap between the armature and the field magnet faces in the diametrical direction, the armature on the shroud side and the field magnet on the rotating duct side come too close to each other, and the safety factor As a result, the gap (gap) is too large and the driving force and power generation amount do not increase sufficiently. The gap (gap) between the armature and the field magnet is appropriately maintained even when the rotary duct or the blades are expanded or contracted, because the armature and the field magnet disclosed in Patent Literature 4 and Patent Literature 11 are opposed to each other. The problem was solved by making the direction an axial gap parallel to the axis of rotation. However, secondly, even if the opposing method of the armature and the field magnet is an axial gap, if stress due to disturbance occurs on the rotor blade with a shroud, the linear blower, or the linear wind power generator, the field magnet is arranged. The installed rotating duct may temporarily move in the axial direction. Then, since the gap between the armature and the field magnet is about 5 mm at the maximum, or 1 mm or less in the small case, there is a possibility of collision. As a mechanism for preventing the axial stress generated in the rotating duct and blades from colliding with the armature and the field magnet, the gap holding bearing of Patent Document 4 and the cam follower of Patent Document 1 are configured with a shroud and the rotating duct. Since the distance is finally maintained against an external force that shrinks the gap between the armature and the field magnet, the gap (air gap) between the armature and the field magnet is maintained so as not to collide. But thirdly, shrouded rotor blades, linear blowers, and linear wind power generators with diameters as large as 200 meters can maintain such high roundness and produce shrouds and rotating ducts with such large diameters. There is a problem. About this problem, the method of winding a thin strip around a giant winding wheel in Patent Document 2 or Patent Document 3 is disclosed and can be solved. Fourth, when the armature is configured as a toroidal core coil, a wound core for a core having a diameter of 200 m is not manufactured by a conventional method. By winding silicon steel or amorphous thin strip, it is possible to manufacture a huge wound iron core, and the problem is solved.

As mentioned above, even though four of the five problems have already been solved, the fifth problem that needs to be solved in the manufacture of blades for use in large diameter rotor blades with shrouds, linear blowers, and linear wind power generators Exists. That is, if the blade diameter of the rotor blade with shroud, linear blower, or linear wind power generator is 2 to 3 m at maximum, a plate-like resin can be obtained. Even if it can be manufactured by FRP after making a wooden mold or mold, blades larger than that will increase the weight by 3 times the increase in diameter will affect the thickness of the blade as a volume. Also, because the production cost of large molds rises sharply, the rotor blades with shrouds used for flight have a problem with the weight of the blades, and in linear blowers and linear wind power generators that are installed on the ground and have no weight problems, Since the blades are very expensive, it has been extremely difficult to reduce the amount of blades that can be sold even if they are actually manufactured.

However, the cross-sections of the dragonfly blades of Patent Document 5, Patent Document 10, Patent Document 22, and Non-Patent Document 1 are substantially the same thickness, and have a convex beam (after all) and a step-shaped cross-section unevenness (diaper). Nevertheless, if the angle of attack is 0 ° to 15 ° and the air is maintained while moving at a speed higher than the stall speed, sufficient lift is generated. Further, when a prototype of a fan in which the blades having a certain thickness like a dragonfly blade and the angle of attack of a blade having a convex beam or a stepped cross section is set to 20 ° to 75 ° is produced, a sufficient air volume is generated. The blade of a dragonfly having such a substantially constant thickness and a convex beam or a stepped cross section prevents the blade from bending in the long direction by preventing the bent portion of the convex beam or the stepped shape from being elongated. It is increasing. Therefore, when the diameter is extremely small, a conventional helicopter, blower, or propeller type wind power generator can be manufactured by attaching and fixing the blade root portion of the blade having a blade-like cross section of the dragonfly to the rotating shaft. . However, compared with a conventional blade having a three-dimensional cross section, a blade having a dragonfly blade-like cross section is fragile and easy to break, and the blade is fixed and fixed only on one side of the rotating shaft. In conventional helicopters, blowers, and propeller-type wind power generators that are open to the air, blades having a blade-like cross section of a large diameter dragonfly cannot be used effectively.

Patent Document 16 is intended to reduce the noise by forming a groove that becomes a recess in the blade length direction on the surface of the blade, and includes a dragonfly with a convex beam that becomes a protrusion in the blade length direction on the surface of the blade. Although it is different from the blades, the groove may reinforce the strength in the blade length direction. Patent Document 17 has a multilayer structure in which a dimple core or a corrugated core is sandwiched, and Patent Document 18 has a laminated structure. Any of these is a reference when producing a light and difficult-to-break blade such as a blade of a dragonfly.

Patent Document 13 forms a cavity in the front edge by partially cutting out the rotating shaft side of the rear edge of the high-speed ratio / low-torque lift blade generally used for vertical axis wind turbines, It also has the effect as a drag blade with low peripheral speed ratio and high torque. For this reason, the blade is a skin-only blade whose cross section in the wing width (chord) direction is roughly shaped with a J-shaped outline (hereinafter referred to as a “J-shaped cross-section blade”), and is made of an aluminum plate or a steel plate. Molding is possible simply by bending a thin plate with a constant thickness. Patent Document 8 is also a vertical axis wind turbine, and Patent Document 13 has a notch portion on the rotating shaft side, whereas Patent Document 8 has a notch portion outside the circumference. The same effect as in Reference 13 is obtained. Since the cross section in the blade width (chord) direction is also generally J-shaped, it is referred to as a blade having a J-shaped cross section. The shape of the J-shaped blade is different from that of the dragonfly blade, but is a reference for maintaining the strength in the blade length direction when the blade is made of a steel plate having a constant thickness.

Patent Literature 9, Patent Literature 12, Patent Literature 15, Patent Literature 20, Patent Literature 21, and Patent Literature 23 are formed by simply bending a thin plate having a constant thickness such as an aluminum plate or a steel plate used for a horizontal axis wind turbine. It has a blade whose cross section in the blade width direction (blade chord) direction is a J-shaped cross section or a U-shaped cross section. Among these, Patent Document 12, Patent Document 20, Patent Document 21, and Patent Document 23 have a J-shaped cross section only in a part close to the rotation axis in the blade length direction, and the other part is a substantially flat thin plate. Therefore, even if it is combined with the rotating duct or the annular ring of Patent Document 11 and used as both supports, the strength in the blade length direction cannot be strengthened, resulting in a large diameter. A windmill cannot be configured.

On the other hand, in Patent Document 9 and Patent Document 15, even if the cross section in the blade width (chord) direction has a J-shaped cross section or a U-shaped cross section in the entire region in the blade length direction, It can be prevented from breaking in the blade length direction. However, the wind turbines of Patent Document 9 and Patent Document 15 are characterized in that the wind turbine rotates by guiding the air volume in the vicinity of the center of the wind turbine to the concave (cavity) portion inside the front edge of the J-shaped section or U-shaped section. It is to guide to the tip part by the centrifugal force of this, and to eject from the tip part in the tangential direction of the circumference of the windmill to increase the rotation speed. For this reason, all the blade length directions of the blades having the J-shaped cross section and the U-shaped cross section excluding FIG. 7 of Patent Document 9 are bent or curved in the middle, and the concave portion of the J-shaped cross section or the U-shaped cross section. It has a mechanism that collects and blows off the amount of air flowing through the (hollow) part at the tip. In order to realize the object and gist of such an invention, the tip end portion needs to be open in the tangential direction of the circumference. Therefore, if a rotating duct or a ring like the one disclosed in Patent Document 11 is attached, if the air flow around the spouted outlet hits the rotating duct or the ring, the jetted force is reduced or invalidated. Therefore, the blade cannot be used in combination with a rotating duct or a ring.

Further, in Patent Document 9, there is a description of FIG. 7 in which the shape in the blade length direction is an elongated straight, and there is no bending or bending in the middle of the blade length direction. Further, in claim 7 of patent document 9 and paragraph 13 of the specification, there is a description that “it is an elongated straight line and the tip of the recess is blocked”, and the rotation of patent document 11 It seems that it can be combined with ducts and rings. However, when FIG. 7 of Patent Document 9 is viewed in detail, the tip portion where the flow of the air flow described by the solid line and the broken line is gathered is shown in FIGS. 2 (a), 2 (b), FIG. 5 and FIG. As a substitute for the bent portion or curved portion in the blade length direction of the blade shown in Fig. 1, the tip has a small curved portion. Therefore, the amount of air flowing from the rotary shaft to the blade tip direction by centrifugal force in the recesses (cavities) of the blades of the J-shaped section or U-shaped section is converted into the circumferential direction by this small curved portion at the tip. I understand that. Therefore, the phrase “the tip of the recess is closed” here does not mean both supports for strengthening the strength in the blade length direction, but the air volume induced by the centrifugal force to the tip. Is not diffused, but is accumulated at the tip and then ejected in the circumferential direction. Furthermore, if “strictly comprehending the“ end where the tip of the recess is blocked ”” described in Patent Document 9 is understood, the “closed” range is only the recess (cavity) portion of the tip, It is understood that it is a necessary condition to establish Patent Document 9 to keep the part of FIG. 7 open, and when the details of the illustration of the tip part of FIG. The figure is clearly opened, and it can be confirmed from the figure that it is opened. From this, when a person skilled in the art looks at FIG. 7 of Patent Document 9 in view of the purpose and gist of the invention of Patent Document 9, it is described in claim 7 of Patent Document 9 and paragraph 13 of the specification. The “closing” range of “the tip portion of the recess is blocked” is only the portion directly above the tip of the recess (cavity) portion of the blade tip, and the “closing” range is the blade width of the blade tip (blade blade). It can be understood that the length of the string should not be longer than that, and “blocking” the entire circumference reduces the flow of the air that blows out contrary to the purpose and gist of the invention of Patent Document 9. Or disable it. Therefore, when considering FIG. 7 of Patent Document 9 and Patent Document 11 in consideration of the purpose and the gist, even those skilled in the art can understand the relationship between FIG. 7 of Patent Document 9 and the rotating duct of Patent Document 11. It cannot be said that the combination was easily recalled.

In FIG. 18 of Patent Document 14 and Patent Document 7, there is a description of a windmill that seems to be held in the middle of the blade length direction of the blade with a ring. In such a case, when using a dragonfly blade-like blade or a J-shaped cross-section blade, use a dragonfly blade-like blade or a J-shaped cross-section blade on the inside of the ring, Is a reference when using a normal blade to make a hybrid.

Normally, in a rotor blade with a shroud, a linear blower, or a linear wind power generator, at least one of a rotating beam and a rotating beam (hereinafter referred to as a “rotating beam”) between the rotating shaft and the rotating duct is used. Use to crosslink. Therefore, since the blade or the rotating beam supports the rotating duct with the rigidity of the blade or the rotating beam, the weight increases greatly in order to secure the rigidity as the diameter is increased. On the other hand, Patent Document 6, Patent Document 19, and Non-Patent Document 2 stop the bridge between the rotating shaft and the rotating duct from depending on the rigidity of the blades and the rotating beam, and the hub and spoke as in the bicycle. A windmill is made up of parts consisting of a rim and a rim. Spokes in a bicycle are used as a set of four, and the space between the hub and the rim is regulated. However, Patent Document 19 describes that two spokes are dedicated to the windmill described in the document in a single U-shape. In summary, by making two sets of spokes, the shape and angle of attack of the blades attached to the wind turbine are made substantially uniform. Patent Document 6 and Non-Patent Document 2 are composed of a hub exactly the same as a conventional bicycle wheel, a set of four spokes, and a rim. The windmill is composed of a plurality of blades having different angles of attack using the same. When utilizing the rigidity of the blades when bridging the rotating shaft and the rotating duct as in the prior art, it is necessary to produce the blades with a strong member having a considerable thickness. For this reason, it is not easy to replace the blades when damage occurs. However, in Patent Document 6, Patent Document 19, and Non-Patent Document 2 comprising a hub, a spoke, and a rim, a blade can be manufactured with a light and thin synthetic resin, and the blade root of the blade is used as a rotating shaft. There is no need to attach and fix the end to the inner periphery of the rotating duct. Therefore, the replacement of the blade when the blade is damaged has been important until now. However, in Patent Document 6, Patent Document 19, and Non-Patent Document 2, it is easy to replace the blade in the middle or partially. . In particular, Patent Document 6 uses a blade with a cloth material similar to that of a sail, and can be partially removed and is extremely easy to replace. In Patent Document 6 and Patent Document 19, the position of the generator when the windmill is used for wind power generation is unknown, but Non-Patent Document 2 is similar to Patent Document 4 and Patent Document 11 in that the power generation unit is at the tip. Power generation is performed by a combination of a sled plate-like permanent magnet on one side of the rim and an armature disposed in the axial direction on one side of the rim opposite to the permanent magnet. Although the method using these spokes is different from the direction of improving the blade itself, it is useful as a technique for reducing and solidifying the rotor blade with a shroud, the linear blower, and the linear wind power generator.

JP, 2012-117373, A: A cam follower; JP 2009-196227 A: strips; Patent No. 4053584 gazette: sheet strip; Japanese Patent No. 3946755: Bearing for holding a gap; JP, 2007-205359, A: Dragonfly blade; JP 2007-127113 A: A windmill like a bicycle wheel; JP, 2006-219981, A: A blade fixed in the middle of a blade length; JP, 2006-037753, A: A vertical axis inverted J-shaped cross-section blade; JP, 2005-061233, A: A blade of a J-shaped section across the horizontal axis; JP, 2005-030317, A: Dragonfly blade; Japanese Patent No. 3595988: Rotary vane with rotating duct type shroud; JP, 2004-340108, A: A blade of a horizontal axis J-shaped section; Patent 3451085 gazette: Vertical axis J-shaped cross-section blade; JP, 2002-147336, A: A blade fixed on the way of a wing length; JP 2001-32761 A: A blade having a J-shaped cross section across the horizontal axis; JP-A-5-340392: low noise propeller fan; JP-A-5-052101: Hollow fan blades; JP-A-60-113096: Laminated blades; US Pat. No. 03942839: Bicycle wheel-like windmill; Utility model registration No. 3038364 gazette: Horizontal axis partially J-shaped blades; Utility Model Registration No. 3029106: Blades with a partial J-shaped horizontal axis; Japanese Utility Model Publication No. 58-64895: Dragonfly blades; Japanese Utility Model Laid-Open No. 54-4942: Horizontal axis partially J-shaped blades;

Mitsubishi Heavy Industries, Ltd. Aerospace Business Headquarters “Why don't you read the shape of an airplane? Part 6: The shape of an airplane, the shape of a living thing”, [online], [Search January 6, 2012], Internet <http: // www. mhi. co. jp / aero / introduction / story / design / chapter6. html> TAM Energy LLC “TAM Wind Turbins”, [online], [March 2, 2012 search], Internet <http: // www. Tamergy. com />

In order to prevent the collision between the armature and the field magnet from the expansion and contraction of the first rotating duct and blades, among the five problems in manufacturing a rotor blade with a shroud, a linear blower and a linear wind power generator The gap between the armature and the field magnet is maintained by the stress in the axial direction due to disturbance to the second device, etc., by making the opposing direction of the armature and the field magnet the axial direction. Solved by a gap-bearing bearing and cam follower, the production of the third highly rounded shroud and rotating duct was solved by a method of winding a thin strip around a giant winding wheel, and the fourth giant toroidal core coil. The wound iron core was also solved by winding a giant steel wheel with silicon steel or amorphous strip. However, with the conventional method, the manufacture itself is difficult, or even if it can be manufactured, the manufacture of a rotor blade that forms a large diameter, which is extremely expensive and difficult to sell, is the fifth issue. Remained as.

In the present invention, attention is paid to the dragonfly blade as in Patent Document 5, Patent Document 10, Patent Document 22, and Non-Patent Document 1. The dragonfly blades do not easily fold in the blade length direction, even though the thickness in the blade width (chord) direction is constant. The reason why it does not break is that, as described in Patent Document 5 and Patent Document 10, even if the blade width (chord) direction of the blade is approximately constant thickness, the vein-shaped convex beam extending in the blade length direction in some places And, as can be generally inferred from Patent Document 22 and Non-Patent Document 1, it is composed of a bent portion like a stepped structure composed of a stepped surface and a raised surface of a staircase. It is understood that this is the reason. Therefore, even if a steel plate having a constant thickness can be formed, for example, a steel plate having a constant thickness can be formed as long as at least one of a convex beam extending in the blade length direction and a portion bent in a staircase shape can be formed. If it is cut out horizontally and welded so that the cross section has a stepped shape or combined with a round bar like a hinge, a lightweight blade that cannot be easily broken in the blade length direction can be constructed. In addition, it is possible to form a lightweight blade that is difficult to break even if a thin steel plate is pressed in a step shape and several sheets are stacked. When superposing thin steel plates, the mesh described in Patent Document 2 and Patent Document 3 can be used to reduce the weight, or the uneven shape and honeycomb shape such as dimples and corrugated sheets described in Patent Document 17 can be pressed. Thus, the blades can be strengthened, and the lamination described in Patent Document 18 is easy. Furthermore, in the case of a long object, the length of the raw material was insufficient in the past, and it was necessary to connect the parts to make a long object. In some cases, the strip-shaped steel sheet shipped as a coil with a thickness of about 2 to 3 mm from the steel works is used as it is, so that the length in the longitudinal direction of the blade is 100 m, 1 km or 2 km. Can be produced without connecting, and the price can be reduced. In addition, such a rotating blade of a long object cannot be mounted and fixed by a single support of only the central rotating shaft. However, a rotating blade with a shroud, a linear blower, or a linear wind power generator has a blade root portion of the blade. If the blade is attached to the rotating shaft at two locations, including the blade tip on the inner periphery of the rotating duct, and if necessary, at multiple locations including any location in the blade length direction, the blade has no thickness. However, it is easy to maintain the strength in the longitudinal direction. Therefore, in order to solve the fifth problem related to the rotor blade, the thickness in the blade width direction is generally constant, and the convex beam extending in the blade length direction or the uneven shape extending in the blade length direction or the staircase construction In other words, a blade having at least one of a stepped structure of a tread surface and a kick-up surface and characterized by a dragonfly blade-like cross section (hereinafter referred to as a dragonfly blade-like blade) ), And fix and fix the blade root part of the dragonfly blade-like blade to the rotating shaft, and attach and fix the blade tip part of the dragonfly blade-like blade to the inner periphery of the rotating duct. By using a rotary blade for a linear blower or a linear wind power generator, even a large diameter can be produced firmly.

However, in a complicated structure like a vein like Patent Document 5 and Patent Document 10 and a structure composed of a large number of step-like cross sections like Patent Document 22 and Non-Patent Document 1, there is an increase in processing cost. It cannot be made cheap. Therefore, if the minimum combination that can exert lift and drag as a blade like a dragonfly without excessively reducing the strength of the blade in the blade length direction is configured based on simple experimental results, the actual dragonfly blade Even with a more simplified structure, lift blades and drag blades can be configured. Its structure is composed of only three surfaces, one tread surface, one kick surface, and one slope (inclined surface). However, the angle of attack of the blades is changed, and each surface is arranged from the traveling direction of the blades. It can be used as a lift blade or a drag blade by changing the order or the length of each surface.

Such a structure of one tread surface, one kick surface, and one slope (inclined surface) can be integrated at a stretch from the beginning by pressing or bending a flat plate. However, in the present application, a pair of a thin plate molded so as to have an approximately L-shaped cross section with one tread surface and one kick surface, one kick surface, and one slope (inclined surface). It is divided into two sets of component blocks, a thin plate molded so as to have an approximately L-shaped cross section. The two parts blocks are overlapped one by one or several at the part of the kick-up surface and fixed by at least one of bonding, welding, welding, explosive bonding, and bolting to form the kick-up surface Strengthen the blade in the blade length direction while keeping the entire blade light by making the number of thin plates to be at least one more than the number of thin plates that make up other treads and slopes (inclined surfaces) In addition, it can be manufactured at low cost because it is easy to work.

The dragonfly blades have the same shape, and can be used both as blowing blades and wind receiving blades for wind power generation. However, if it is limited to wind power generation and manufactured at a lower cost, the effect of increasing the strength of the blade in the blade length direction will be lost due to the overlap of the multiple kick-up surfaces of the blades of the dragonfly. A blade that constitutes a J-shaped cross section (hereinafter referred to as “blade with a J-shaped cross section”) can be constructed from only two surfaces, one long kick-up surface and one slope (inclined surface). Further advantageous.

A dragonfly blade-like blade with a stepped structure consisting of a tread surface, a kick-up surface, and a slope (inclined surface) extending in the blade length direction with a generally constant thickness in the blade width (chord) direction of the blade. Making a rotor blade with a shroud, a linear blower, or a linear wind power generator makes it easy and cheap to make a rotor blade with a shroud, a linear blower, or a linear wind power generator with a large or huge diameter exceeding several hundred meters. Can do. Also, a J-shaped cross-section blade composed of a kick-up surface with a kick-in length and a slope (inclined surface) or a blade combining two J-shaped cross-section blades back to back (hereinafter referred to as “J-shaped back-to-back cross section”). If you make a linear wind generator, you can easily and inexpensively make a linear wind generator with a large or huge diameter exceeding several hundred meters. An increase in production costs can be suppressed.

(A) In the figure, the armature is arranged on the shroud side, the field magnet is arranged on the rotating duct side, and the blade tip portion when the armature and the field magnet are opposed in the axial direction is shown. It is sectional drawing. In order to withstand the external pressure applied to the rotating duct and blades and maintain the gap (gap) between the armature and the field magnet, this is an example using a gap holding bearing attached to the end of the armature. Further, when the field magnet is disposed on the shroud side and the armature is disposed on the rotating duct side, the gap holding bearing is disposed on the rotating duct side as the armature moves. (B) The figure shows the blade tip when the armature is disposed on the shroud side, the field magnet is disposed on the rotating duct side, and the armature and the field magnet face each other in the axial direction. It is sectional drawing. This is an example using a cam follower attached to the inner peripheral portion (inner wall) of the shroud in order to withstand the external pressure applied to the rotating duct and blades and maintain the gap (air gap) between the armature and the field magnet. Also, when a field magnet is arranged on the shroud side and an armature is arranged on the rotating duct side, the cam follower is a device independent of the armature, but it can be moved and rotated in the same manner as in (A) above. A cam follower is disposed on the outer periphery (outer wall) of the duct. (A) The figure shows a large circular ring, shroud, rotating duct, and wound iron core. It is a top view in the case of producing. (B) The figure shows a large circular ring, shroud, rotating duct, and wound iron core when a thin strip is wrapped around a huge winding wheel when making a huge ring, shroud, rotating duct, and wound core. It is a side view in the case of producing. FIG. 4A is a cross-sectional view showing components of a part of a blade-like blade of a dragonfly having a substantially constant thickness in the blade width (chord) direction. The dragonfly blade-like blade is an example in which a convex beam extending in the blade length direction is attached to the tread surface to prevent the blade from breaking in the blade length direction. FIG. 4B is a cross-sectional view showing components of a part of a blade-like blade of a dragonfly having a substantially constant thickness in the blade width (chord) direction. A dragonfly blade-like blade is an example in which a tread structure is combined with a tread surface and a kick-up surface to prevent folding in the blade length direction. In this example, the angle formed by the tread surface and the kicking surface is 90 °, and in this case, it does not have a kicking length referred to as a staircase. FIG. 4C is a cross-sectional view showing constituent elements of a part of a blade-like blade of a dragonfly with a substantially constant thickness in the blade width (chord) direction. A dragonfly blade-like blade is an example in which a tread structure is combined with a tread surface and a kick-up surface to prevent folding in the blade length direction. In this example, the angle formed by the tread surface and the kicking surface is smaller than 90 °, and has a portion of the kicking length referred to as a staircase. FIG. 4D is a cross-sectional view showing constituent elements of a part of a blade-like blade of a dragonfly having a substantially constant thickness in the blade width (chord) direction. A dragonfly blade-like blade is an example in which a tread structure is combined with a tread surface and a kick-up surface to prevent folding in the blade length direction. In this example, the kick-up surface is in the shape of a square, and the concave portion (cavity) is the kick length. FIG. 5E is a cross-sectional view showing constituent elements of a part of a blade-like blade of a dragonfly having a substantially constant thickness in the blade width (chord) direction. A dragonfly blade-like blade is an example in which a tread structure is combined with a tread surface and a kick-up surface to prevent folding in the blade length direction. In this example, the kick-up surface is an arc shape, and the concave portion (cavity) of the arc is the kicking length. (A) is an example of a cross-sectional view of a dragonfly blade-like blade comprising a tread surface, a kick-up surface, and a slope (inclined surface). (B) is a sectional view of a dragonfly blade-like blade comprising a tread surface, a kick-up surface, and a slope (inclined surface), and the tread surface is an example reinforced with a convex beam extending in the blade length direction. FIG. 4C is a sectional view of a dragonfly blade-like blade comprising a tread surface, a kick-up surface, and a slope (inclined surface), and is an example in which the tread surface is formed in an uneven shape extending in the blade length direction. Although the described uneven shape is a corrugated sheet, the uneven shape may be (a) a triangular shape, (b) a square shape, or (c) a mountain shape. (A) The figure is a cross-sectional view. Of the blades of a dragonfly consisting of a tread surface, a kick-up surface, and a slope (inclined surface), a flat tread surface on the negative pressure side and a wing length direction on the positive pressure side It is an example which stuck and strengthened the uneven | corrugated shaped tread board surface to extend. (B) The figure is a cross-sectional view. Of the blade-like blades of a dragonfly consisting of a tread surface, a kick-up surface and a slope (inclined surface), the uneven tread surface extending in the blade length direction toward the negative pressure side is shown on the positive pressure side. This is an example in which a flat tread surface is attached and strengthened. (C) The figure is a cross-sectional view. Of the blade-like blades of a dragonfly consisting of a tread surface, a kick-up surface, and a slope (inclined surface), both the negative pressure side and the positive pressure side are constituted by flat tread surfaces, This is an example in which a concavo-convex tread surface extending in the blade length direction with a flat tread surface is sandwiched and strengthened. The figure shows a pair of thin plates with a generally constant thickness in the wing span (chord) direction, with a cross-section consisting of a tread surface and a kick surface, and an approximately L shape, and a kick surface and slope (inclined surface). FIG. 6 is a cross-sectional view of each of a pair of a pair and a pair of which is substantially L-shaped. According to a simple experiment, it is appropriate that the angle between the tread surface and the kicking surface is 75 ° to 100 °, and the angle between the kicking surface and the slope (inclined surface) is 90 ° to 115 °. Also, if the length of the wing width (chord) is W, the length of the tread is T, the length of the slope (inclined surface) is S, and the height of the kicking surface is K, the distribution of each length is , T = 0.2W ~ 0.4W, S = 0.6W ~ 0.8W, K = 0.1T ~ 2T it can. (A) The figure shows a pair of thin plates having a substantially constant thickness in the wing span (chord) direction, the cross-section of which is a combination of a tread surface and a kick surface, and a kick surface and a slope ( It is each sectional drawing at the time of preparing 1 set so that the combination with an inclined surface) may form a substantially L shape. (B) The figure shows one set of a combination of a tread surface and a kick-up surface having a substantially L-shaped cross section, and one set of a combination of a kick-up surface and a slope (inclined surface) having a substantially L-shaped cross section. Is an example in which the members are connected to each other by the kicking surfaces. It can be seen that the kicking surface has been strengthened with two. (C) The figure shows two sets of a combination of a tread surface and a kicking surface whose cross section is generally L-shaped, and one pair of a combination of a kick surface and a slope (inclined surface) whose cross section is generally L-shaped. Is an example in which the members are connected to each other by the kicking surfaces. It can be seen that the kicking surface has been strengthened with three. (D) The figure shows two sets of a combination of a tread surface and a kick-up surface having a substantially L-shaped cross section, and two combinations of a kick-up surface and a slope (inclined surface) having a substantially L-shaped cross section. Is an example in which the members are connected to each other by the kicking surfaces. It can be seen that the kicking surface has been strengthened with four. (A) The figure shows two sets of thin plates having a substantially uniform thickness in the wing span (chord) direction, the cross section of which is a combination of a tread surface and a kick surface, and an approximately L-shape, a kick surface and a slope ( This is an example of a case where a pair with a slanted surface) is formed in a generally L shape and joined together by a kick-up surface. If the angle of attack is an angle formed by the slope (inclined surface) in the traveling direction of the blade, the angle is 15 °. (B) A figure is an example at the time of using the blade | wing of a dragonfly as a lift blade | wing. If the angle of attack of the blade is moved in the direction of the black arrow at a relatively high speed between 0 ° and 15 °, the lift indicated by the white double line arrow is generated. (C) The figure is an example in which a blade like a dragonfly is a drag blade. If the angle of attack of the blade is between 20 ° and 75 °, even if it is moved at a relatively slow speed in the direction of the black arrow, the drag indicated by the white double line arrow is generated. (A) The figure shows two sets of thin plates having a substantially uniform thickness in the wing span (chord) direction, the cross section of which is a combination of a tread surface and a kick surface, and an approximately L-shape, a kick surface and a slope ( This is an example of a case where a pair with a slanted surface) is formed in a generally L shape and joined together by a kick-up surface. If the angle of attack is an angle formed by the slope (inclined surface) in the traveling direction of the blade, the angle is 15 °. (B) A figure is an example at the time of using the blade | wing of a dragonfly as a lift blade | wing. When the angle of attack of the blade is between 0 ° and 15 °, when the wind from the direction of the white arrow at a relatively high speed is received, the blade is sucked and moves in the direction of the black arrow. (C) The figure is an example in which a blade like a dragonfly is a drag blade. Even when the angle of attack of the blade is between 20 ° and 75 °, even when the wind is received from the direction of the white arrow even at a relatively slow speed, the blade is pushed and moved in the direction of the black arrow. (A) The figure shows two sets of thin plates having a substantially uniform thickness in the wing span (chord) direction, the cross section of which is a combination of a tread surface and a kick surface, and an approximately L-shape, a kick surface and a slope ( A pair of dragonfly blades in the case of a combination of a slanted surface) and a pair of L-shaped joints joined together by a kick-up surface to form a drag blade with an angle of attack of 20 ° to 75 °. It is an example of a blade | wing. In this state, when the wind is received from the direction of the white arrow, the blade moves in the direction of the black arrow, so that it can be used as a blade of a linear wind power generator. (B) The figure shows two sets of thin plates with a substantially constant thickness in the wing span (chord) direction, the cross-section of which is a combination of a tread surface and a kick surface, and an approximately L-shape, a kick surface and a slope. A pair of dragonfly blades with a combination of (inclined surface) and an L-shaped combination joined together by a kick-up surface and a drag blade with an angle of attack of 20 ° to 75 ° It is an example of a blade | wing. If the blade is moved in the direction of the black arrow in this state, the wind can be sent in the direction of the white arrow, so that it can be used as a linear blower. When used in combination with the result of the previous (A) term, the drag blade in this case means that it can be used as it is for a linear wind power generator or a linear blower without changing the angle of attack. . (A) The figure shows a roughly J-shaped cross section in the wing span (chord) direction, with the tread surface removed from the wing of the dragonfly and only the kick-up surface with a kick-in length and a slope (inclined surface). It is an example in the case of becoming a wing. When a horizontal axis wind turbine is composed of blades having a J-shaped cross section and the notch portion of the J-shaped cross section is directed to the windward, the blades rotate in the direction of the black arrow. (A) a combination of a kick-up surface with a kick-in length and a tread surface, (b) a combination of a kick-up surface and a tread surface that form a square shape, and (c) a combination of a kick-up surface and a tread surface that form an arc. There will be three. (B) The figure shows a J-shaped back-to-back section of a blade that is configured back-to-back so that the leading and trailing edges of the two J-shaped sections and the trailing and trailing edges overlap. When attached to the windmill and one notch portion of the blade of the J-shaped back-to-back cross section is directly opposed to the windward, the blade rotates in the direction of the black arrow. In addition, the relationship between the two J-shaped cross-section blades that make up the J-shaped back-to-back section blades is affixed back to back as in (a-1), (b-1), and (c-1). It is also possible to leave a space as shown in (a-2), (b-2), (c-2), (a-3), (b-3), (c You may reinforce by putting a reinforcing material in the empty space as in 3). FIG. 4A is a cross-sectional view of the a-a ′ portion of a dragonfly blade-like blade. FIG. 4B is a plan view of a dragonfly blade-like blade, in which the blade root portion is attached and fixed to the rotating shaft, and the blade tip portion is fixedly attached to the inner peripheral portion of the rotating duct. FIG. 5C is an example of a plan view in which a blade of a linear wind power generator is configured by attaching and fixing a blade having a J-shaped cross section to the inner peripheral portion of the rotating duct. FIG. 4D is a cross-sectional view of the a-a ′ portion of a J-shaped cross-section blade and a J-shaped back-to-back cross-section blade. (E) is a plan view when viewed from one direction of notches on both sides of the trailing edge of a J-shaped back-to-back cross section. (A) is a normal example of the blade | wing of a J-shaped back-to-back cross section. (B) shows that there is almost no abnormal noise even when the blades with the J-shaped section rotate at high speed, whereas the blades with the J-shaped back-to-back section may generate abnormal noise. By making the end part in the notch direction and the rear end part of the blade the same shape as a chevron nozzle with a triangle or corrugation and a notch nozzle with a V-shaped or U-shaped cut, the noise was reduced. It is an example. (A) The figure is an example of an empty hollow carrier provided with eight shroud-equipped rotor blades having a diameter of about 200 m using lift blades of dragonfly blade-like blades. (B) The figure is an example of an air ferry provided with 12 shroud rotary blades having a diameter of about 18 m using lift blades of dragonfly blade-like blades. The figure shows a dragonfly blade-like blade with a diameter of 9m in a tea plantation. Usually, it is generating power as a linear wind power generator. It is an example of the linear blower which blows the air volume of the grade which reaches and prevents frost damage. The figure shows the use of a toroidal core coil, using either dragonfly blades, J-shaped blades or J-shaped back-to-back blades as drag blades with a diameter of about 1 km in the valley where the wind passes. It is an example of a linear wind power generator that produces hydrogen and oxygen by electrolysis of water as a direct current generator.

When the present invention is described with reference to the drawings, as shown in FIG. 4, the front edge portion is always a tread surface (111), and includes a plurality of tread surfaces (111) and a plurality of kick-up surfaces (112). In the stepped structure, most of the kick-up surface (112) is provided with a kick-in length (114), and the rear edge portion is always a slope (inclined surface) (113). To represent. In addition, a combination with a kicking surface (112) having no kick length (114), a combination with a kicking surface (112) bent into a square shape, a combination with a kicking surface (112) that is an arc, The combination of the convex beam (118) extending in the blade length direction and the combination of the concavo-convex shape (119) extending in the blade length direction, the blade-like blade (110) of the dragonfly also has a function as a blade. Since the strength in the long direction is almost the same, additional explanation will be given only when there is a difference.

When the blade-like blade (110) of the dragonfly of the present invention is divided into the minimum components, when it is composed only of the tread surface (111) and the convex beam (118), it becomes FIG. When the cross section in the (string) direction is stepped, the result is as shown in FIGS. Among (B) to (E) whose cross sections are stepped, (C) to (E) have a kick length (114).

As a reinforcing measure in the blade length direction of the dragonfly blade-like blade (110) in the present invention, it is difficult to break by combining a plurality of tread surfaces (111) and kick-up surfaces (112) as shown in FIG. A blade can be constructed. In order to make it harder to break, it can be strengthened by combining convex beams (118) as shown in FIG. 4B or making the tread surface (111) as shown in FIG. 5A to 5C show a case where all the tread surfaces (111) are reinforced with the uneven shape (119).

In the present invention, the blades used in the rotor blades with shrouds (10), the linear blower (20), and the linear wind power generator (30) are aimed to be manufactured inexpensively even if they have large or huge diameters. Therefore, each of the tread surface (111), the kicking surface (112), and the slope (inclined surface) (113) with the wings (110) of the dragonfly shown in FIGS. Even if it is configured only with a cage, it has been confirmed that the lift blade is also a drag blade by a simple experiment as shown in FIGS. For this reason, first, from a tread surface (111) and a kick surface (112) that form a substantially L-shaped cross section in the wing width (chord) direction with a thin plate having a substantially constant thickness as shown in FIG. Constitutes one set. Next, in the same manner, a set of a kick-up surface (112) and a slope (inclined surface) that form an approximately L-shaped cross section in the blade width (chord) direction from the thin plate is formed. The pair of the tread surface (111) and the kick surface (112) and the pair of the kick surface (112) and the slope (inclined surface) (113) are formed in an approximately L-shaped cross section. Can be easily formed by welding or hinge-shaped.

A pair of a tread surface (111) and a kick surface (112) having a substantially L-shaped cross section prepared in FIG. 6 of the present invention, and a pair of a kick surface (112) and a slope (inclined surface) (113) are: Each pair can be combined and the kick-up surfaces (112) can be connected together as shown in FIG. 7B. Then, the tread surface (111) and the slope (inclined surface) (113) are each composed of one thin plate, but the kicking surface (112) is always composed of two more sheets. The blade can be strengthened in the blade length direction while minimizing the increase in the weight of the entire blade.

A plurality of pairs of a tread surface (111) and a kick surface (112) having a substantially L-shaped cross section prepared in the present invention and a plurality of pairs of a kick surface (112) and a slope (inclined surface) (113) are prepared. Thus, the combinations as shown in FIGS. 7C to 7D can be further strengthened in the blade length direction. Even in this case, the number of the thin plates constituting the kick-up surface (112) is always at least one more than the number of the adjacent tread surfaces (111) and slopes (inclined surfaces) (113). This can contribute to making the blade length direction difficult to break by minimizing the increase in the weight of the blade. In addition, as a method for connecting the respective kicking surfaces (112), adhesion by an adhesive, welding, explosive adhesion by explosion, connection by bolts, or the like can be used alone or in combination.

As shown in FIGS. 8A and 9A, the wing width (chord) length of the wings (110) of the dragonfly is W, the length of the tread (111) is T, When the length of the slope (inclined surface) (113) is S and the height (length) of the raised surface (112) is K, the angle of the inclined surface is the angle of attack, and T = 0.25W, S = 0 .75W, K = 0.8T, angle of attack 15 °, even dragonfly blade-like blades (110) of the same shape can be used as lift blades and drag blades by changing the angle of attack be able to. FIG. 8 shows the case of the rotor blade with shroud (10) and the linear blower (20), but the rotor blade with shroud (10) with an angle of attack between 0 ° and 15 ° as shown in FIG. 8B. When the blade is rotated in the direction of the black arrow at a speed equal to or greater than the stall speed, lift force may be generated in the direction of the white double line arrow when the blade is used as a lifting blade on the rotor blade with shroud (10). it can. When the angle of attack is rotated between 20 ° and 75 ° in the direction of the black arrow, the wind can be sent in the direction of the white arrow when used in the linear blower (20) as a drag blade. In addition, when there is sufficient driving power, it can be used for the rotor blade with shroud (10). In this case, the amount of energy consumed is four to five times that of the lift blade, but the lift blade It is also possible to configure a silent shroud-equipped rotor blade (10) that does not generate suction sound or impact sound.

FIG. 9 shows a case of a linear wind power generator (30) that receives wind in the direction of the white arrow, and lift force is obtained by changing the angle of attack of the blade-like blade (110) of the same shape as in FIG. It can be used for both vanes and drag vanes. If the wind turbine is attached to a horizontal axis wind turbine so as to face the wind and the angle of attack is 0 ° to 15 °, the wind turbine can be rotated as a lift blade at a high speed when the wind speed is somewhat high. Further, when the angle of attack is between 20 ° and 75 °, even a very weak wind can be rotated slowly as a drag blade, and the torque can be sufficiently exhibited. Since the linear wind power generator (30) has the power generation unit at the blade tip, it can generate sufficient power even if the blades rotate slowly. Therefore, in general, the linear wind power generator (30) often uses the dragonfly blade-like blade (110) as a drag blade with a large generated torque although the rotation speed is low.

FIG. 10 is an example in which, in the case of the linear blower (20), the attachment angle of the dragonfly blade-like blade (110) is set to be the same as that of the linear wind power generator (30). Then, when this linear blower (20) faces the windward and receives wind from the direction of the white arrow as shown in FIG. 10 (A), the windmill rotates in the direction of the black arrow and generates electricity at the blade tip. Can do. Furthermore, if the blades are rotated in the black arrow direction as shown in FIG. 10B with the blade mounting angle as it is, it is possible to blow in the white arrow direction. Therefore, when such an operation is performed, a device for changing the direction of the blades is not necessary, so that a linear blower (20) having both a wind power generator and a blower can be configured at a reduced price.

The tread surface (111) is removed from the tread surface (111), the kick-up surface (112), and the slope (inclined surface) (130) constituting the blade (110) of the dragonfly, and the kick length (114) If there is only a certain lifting surface (112) and slope (inclined surface) (113), it becomes a blade (130) having a J-shaped cross section as shown in FIG. 11 (A) and used for the linear wind power generator (30). Can do. The blade (130) having a J-shaped cross section can flow in a direction perpendicular to the blade longitudinal axis as soon as the wind received from the front in the entire blade length direction is collected in the hollow portion of the kick-shaped length of the J-shaped cross section. So you can generate a big Turkey. Also, compared to the dragonfly blade-like blade (110), the strength in the blade length direction is reduced by the absence of the tread surface (111) and the riser surface (112), but the blade root portion is rotated. Since the blade tip portion is connected to the rotating duct (100) or the ring to support both shafts, the blades are less likely to break in the blade length direction.

The blade (130) having a J-shaped cross section is formed as a blade (140) having a J-shaped back-to-back cross section when the two blades (130) having the J-shaped cross section are integrated back to back as shown in FIG. Can do. When the J-shaped back-to-back blades (140) are used in the linear wind power generator (30), the direction when facing the windward is considerably lower than the J-shaped blades (130). Although it is an axial windmill, it has a feature that the windmill rotates regardless of the wind direction from all directions. The linear wind power generator (30) usually has an uplifting device, and converts the windmill surface by 90 ° from a vertical position to a horizontal position during a strong wind. In this case, although the wind turbine can continue to generate power as a vertical axis wind turbine, the blade (140) having a J-shaped back-to-back cross section generates much power even as a vertical axis wind turbine. Also, the J-shaped back-to-back blades (140) support the rotating duct (100) with two J-shaped cross-section blades (130). (30) can be configured.

A dragonfly blade-like blade (110), a blade with a J-shaped cross section (130), and a blade with a J-shaped back-to-back cross section (140), as shown in FIG. Since the strength in the blade length direction can be maintained since the blade is attached and fixed to the rotary duct (100) and used for both supports, the rotor blade with shroud (10), the linear blower (20) and the linear wind turbine having a large or huge diameter. The generator (30) can be easily configured.

When a blade like a dragonfly blade (110) is used as a lifting blade for a rotor blade with a shroud (10), a huge or large diameter rotor blade with a shroud (10) as shown in FIG. 13 constitutes an air hollow carrier or an air ferry. can do.

When the linear fan (20) and the linear wind power generator (30) are used as the drag blades (110) as the drag blades, the linear fan (20) of FIG. 14 that can combine wind power generation and air blowing, and FIG. A linear wind power generator (30) with a huge diameter enough to straddle 15 canyons can be constructed.

Using a J-shaped cross-section blade (130) or a J-shaped back-to-back cross-section blade (140), a linear wind power generator (30) having a huge diameter enough to straddle a valley can be configured.

FIGS. 7 to 10 and FIGS. 12 to 14 show that a tread surface or a tread surface is formed by at least one method of bending, pressing, welding, or connecting in a hinge-like manner. The blade surface (blade chord) direction is configured as a blade with a kick-up surface and a slope (inclined surface), and the blade root is attached and fixed to the rotating shaft, and the blade tip is attached and fixed to the rotating duct and ring In the blades of shrouds and blades like dragonflies used in linear blowers and linear wind power generators with both supported blades, the number of thin plates constituting the lifting surface in the blade length direction is the blade width (chord) direction. This is an embodiment of a dragonfly blade-like blade characterized by having at least one more than the number of adjacent tread surfaces and slopes (inclined surfaces).

11, 12, and 15 show a stepping surface, a kicking surface, and a slope (inclined surface) that constitute the blades of the dragonfly of the first embodiment, and a kicking length with a kicking length is removed. The blade root part of the blade (hereinafter referred to as “blade with J-shaped cross section”) whose cross section in the blade width (chord) direction is approximately J-shaped is used only as a combination of a surface and a slope (inclined surface). Or a blade with a wing tip attached to and fixed to a rotating duct or an annulus, or a blade with two J-shaped cross-section blades back-to-back (hereinafter referred to as a “J-shaped back-to-back cross-section blade”). And the blade root portion is attached and fixed to a rotating shaft, and the blade tip portion is attached and fixed to a rotating duct or a ring. This is an example.

The dragonfly blade-like blades, J-shaped cross-section blades and J-shaped back-to-back cross-section blades described in the present invention can be manufactured easily and inexpensively, as well as mass production and continuous production. Is also possible. Therefore, if a rotor blade with a shroud is made by using such a huge dragonfly blade-like blade, a new aircraft such as an air hollow carrier or an air ferry can be manufactured. In addition, if a large-diameter dragonfly blade-like blade is used, for example, a frost damage can be prevented during windless periods in a tea plantation over a wide area in winter, and a linear blower that normally generates power with wind power can be manufactured. Furthermore, if you make a windmill using either a dragonfly blade like a dragonfly with a very large diameter, a blade with a J-shaped cross section, or a blade with a J-shaped back-to-back cross section, for example, you can It is possible to create a very large linear wind power generator that can be completely covered, and to create new industries even in regions where power conditions are severe.

DESCRIPTION OF SYMBOLS 10 Rotor blade with shroud 20 Linear blower 30 Linear wind power generator 100 Rotating duct 101 Rotating duct inner periphery 110 Dragonfly blades 111 Tread surface 112 Lifting surface 113 Slope (inclined surface)
114 Kicking length 115 Blade root 116 Blade tip 117 Notched portion 118 Convex beam 119 Concavity and convexity 120 Field magnet 130 J-shaped section blade 140 J-shaped back-to-back section blade 200 Shroud 210 Armature 220 Bearing for holding gap 230 Cam follower 310 Giant winding wheel 320 Thin strip coil θ Angle formed by the tread surface and the kicking surface Black arrow: Direction of blade movement White arrow: Direction of wind flow White double line arrow: Direction in which lift or drag occurs

Claims (2)

A wing is formed by forming a tread surface, a kick-up surface, or a slope (inclined surface) by at least one of bending, pressing, welding, or connecting in a hinge-like manner. A blade with a shroud that has a blade with a width (blade chord) direction that is stepped, a blade root portion attached and fixed to a rotating shaft, and a blade tip portion attached and fixed to a rotating duct or ring. In the blades of dragonfly blades used in blowers and linear wind power generators, the number of thin plates that form the lifting surface in the blade length direction is the number of treads and slopes (inclined surfaces) adjacent in the blade width (chord) direction. A dragonfly wing-like wing characterized by having at least one more than the wing. A combination of a kick-up surface with a kick-in length and a slope (inclined surface) by removing the tread surface of the tread surface, the kick-up surface and the slope (inclined surface) constituting the blade-like blade of the dragonfly of claim 1 The blade root part of the blade (hereinafter referred to as “blade with J-shaped cross section”) whose cross section in the blade width (chord) direction is approximately J-shaped is attached and fixed to the rotating shaft, and the blade tip part is rotated. The axis of rotation of the blade root part of a blade (hereinafter referred to as a “blade with a J-shaped back-to-back cross section”) that is configured by mounting and fixing to a duct or an annulus, or two back-to-back blades with a J-shaped cross section. A linear wind power generator comprising at least one blade configured to be fixedly attached to a blade and a blade tip portion fixed to a rotating duct or a ring.

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