JP4584638B2 - Vertical axis wind turbine and vertical spindle - Google Patents

Description

  The present invention relates to a vertical wind turbine and a vertical main shaft, and in particular, constructs a support frame as a wind dam, arranges a large number of blades to increase a wind receiving rate, and receives a wind receiving area in a fixed installation area. The present invention relates to a vertical wind turbine that can be used as a wind power generator having a large received wind force, a low installation cost, and a large total power generation amount per fixed area, and a vertical main shaft used for the wind turbine.

  Conventionally, as a wind turbine of a wind power generator, the vertical axis wind turbine is not used because it has a poor wind power recovery rate. This is because a plurality of blades are arranged around the vertical main shaft, and when the blades on one side of the vertical main shaft are rotated by wind, the blades on the other side receive wind resistance and the rotational force cancels out. It is supposed to be done. In addition, it is said that a single blade has a low axial torque and is not practical.

Propeller type wind power generators usually have a small prop installation area, but the length of the propeller is usually 30 m or 50 m, and the land area underneath is large.
As for the vertical axis windmill, the larger the turning radius, the larger the land area used. These land purchase costs, usage fees, etc., are a significant cost burden in terms of profitability.

  In addition, installation of large wind power generators requires a place with good wind conditions, which requires a large amount of invested capital, such as road construction to that place, construction at the installation site, and collection of generated power. Has a major impact on power profitability.

  The present invention provides a vertical axis wind turbine suitable for a wind power generator that can drastically increase the wind receiving area per installation area of the wind turbine and extremely reduce the installation cost by reducing the size and weight. The purpose is to do.

  In the present invention, in order to solve the above-mentioned problems and achieve the object, a plurality of lift-type blades are vertically arranged on one vertical main shaft, and a plurality of lift-type blades are connected in the horizontal direction. The specific contents of the invention are as follows.

(1) In a wind turbine in which one longitudinal main shaft disposed in the shaft disposition portion of the support frame is disposed in a plurality of upper and lower vertical lifting blades in each step, The lift type blades form slopes that incline in the longitudinal main axis direction at the upper and lower ends, and the plane phase of the lift type blades is displaced in one direction of rotation at equal angles sequentially from the upper stage part to the lower stage part, As a whole, a vertical wind turbine comprising lift type blades arranged at equal intervals around a vertical main shaft.

(2) In a wind turbine in which two vertically long lift-type blades are arranged in a plurality of upper and lower stages around one of the vertical main shafts arranged in the shaft arrangement part of the support frame body, Inclined portions that incline in the longitudinal main axis direction at the upper and lower ends of each lift-type blade, and the plane phase of the lift-type blade is displaced in one direction of rotation at equal angles sequentially from the upper step to the lower step. A vertical axis wind turbine in which lift-type blades are arranged at equal intervals around the vertical main shaft as a whole.

(3) The vertical wind turbine according to (1) or (2), wherein a longitudinal intermediate portion of the vertical main shaft is supported by a bearing, and lift type blades are disposed between the upper and lower bearings.

(4) The vertical wind turbine according to any one of (1) to (3), wherein a reinforcing body is attached to a surface of the vertical main shaft except for the vicinity of a bearing portion.

(5) By forming a fitting protrusion on one of the upper and lower end surfaces of each of the vertical main shafts and a fitting recess on the other, and fitting the other fitting protrusion on the fitting recess of the vertical main shaft. The vertical axis wind turbine according to any one of (1) to (4), wherein a plurality of vertical main shafts are vertically connected to each other.

(6) A plurality of shaft arrangement portions arranged in the horizontal direction are formed on the support frame body, vertical main shafts are arranged on the respective shaft arrangement portions, and lift-type blades are arranged around the respective main shafts. The vertical axis windmill according to any one of (1) to (5).

(7) The longitudinal direction according to (6), in which the planar phase of each of the shaft arrangement portions provided in the horizontal direction in the support frame is displaced in a direction different from the continuous direction. Axial windmill.

  According to the present invention, the following effects can be obtained.

In the vertical wind turbine according to the invention described in (1), a longitudinal main shaft is provided with a vertically long lift type blade in a plurality of upper and lower stages, one for each stage. The output of is the rotational torque of the blades in one stage × the number of stages, and a large rotational force can be obtained for one vertical main shaft.
A single blade of a windmill has a higher rotational speed, but since the wind receiving area is narrow and no axial torque is generated, it is not practically used alone, but it is rotated in each stage by being arranged in multiple stages. It is efficient and hardly affected by turbulence caused by the blades that rotate in advance.
The plane phase of each lift type blade is displaced in one direction of rotation by an equal angle sequentially from the upper stage to the lower stage, and as a whole, the lift type blades are arranged at regular intervals around the main axis. Therefore, the wind turbine as a whole can obtain wind in all directions. Furthermore, it is possible to obtain different wind currents at the top and bottom to obtain a rotational force. When the upper and lower lift-type blades rotate by obtaining wind power, the other lift-type blades rotate by other forces, and due to the characteristics of the lift-type blade shape (wing shape), self-propelled lift (rotational thrust) As a result, wind resistance will be exceeded.
In particular, since the slopes are formed at the upper and lower ends of the blade, the wind that hits the left side of the blade and escapes upward and downward with low resistance is blocked by the slope and pushes the blade outward. Will increase. When this is used for a wind power generator, an efficient wind power generator can be obtained.
By arranging the lift type blades in multiple stages, the vertical length of the blades can be reduced, the conveyance and assembly are simplified, and even if the installation area of the windmill is small, the effect more than using large blades Is obtained.
The support frame is composed of a plurality of struts and does not support the load of the entire vertical spindle with the struts, so use thin struts in a range that can withstand shear loads to make a rigid support frame. Can do. It is excellent in workability and cost such as transportation and assembly, and can reduce installation cost and power generation cost as a wind power generator. Further, since the support frame is located outside the lift-type blades, it is difficult for vibration and vibration to occur even when the lift-type blades rotate and wind pressure.

  In the vertical wind turbine of the invention described in (2), two lift-type blades are arranged symmetrically across the longitudinal main shaft, and these are arranged in multiple stages. However, the rotational efficiency is reduced, but the rotational stability is high, and the wind turbine as a whole has good rotational efficiency. The rest is the same as the above (1).

  The vertical wind turbine of the invention described in the above (3) supports the longitudinal middle of the longitudinal main shaft with an intermediate bearing, so that even if the longitudinal main shaft is long and thin, it is difficult to bend, and multistage arrangement of lift type blades Can be advantageously set.

The vertical main shaft according to the invention described in (4) above has a reinforcing body integrally formed on the surface of the vertical main shaft except for the vicinity of the bearing, so that even if the long metal main shaft is thin, it can rotate. Sometimes the longitudinal main shaft is not bent by centrifugal force or wind pressure.
By using the reinforcing body, the metal longitudinal main shaft can be made thin. If, for example, an FRP or aluminum mold is used for the reinforcing body, the longitudinal main shaft can be reduced in weight as a whole. Thereby, the multistage arrangement | positioning of a lift type | mold blade | wing can be made easy.

   The vertical main shaft of the invention described in the above (5) is excellent in assembling workability, ease of transportation, and the like because a plurality of short vertical main shafts can be connected through the connecting shaft. In addition, by reducing the connecting shaft, a small bearing can be used, the friction area can be reduced, and the rotation efficiency can be increased.

In the vertical wind turbine described in the above (6), a plurality of shaft arrangement portions are formed in a horizontal direction on one support frame, and the vertical main shaft is supported by each.
This support frame acts as a large wind dam, and the wind force gathered in one support frame rotates the lift-type blades arranged in a plurality of upper and lower stages on each vertical main shaft, and collects the large force As a body, a generator connected to each vertical main shaft is rotated to form one wind turbine for one support frame, and one wind generator for generating a large amount of power.
For example, if there are 10 lift-type blades on one vertical main shaft and 10 stations in the horizontal direction, the wind receiving area of the blades is 100. This means that one support frame acts as one wind dam, and the wind force collected in the wind dam rotates all the longitudinal main shafts to generate power.
The support frame body in which a plurality of shaft arrangement parts are formed in the horizontal direction has a large area as a whole, and can be formed with a combination of thin columns, etc., so the installation cost is small and strong against typhoons and earthquakes Rigidity can be maintained.
Since the rear of the windmill is in a windless state, if the support frame is disposed in a windy place, the power generation efficiency is good and the windbreak can be played.

In the vertical axis wind turbine of the invention described in (7), since the vertical main shafts arranged in parallel on the left and right are alternately different from each other in plane phase, a partial overlap is caused by overlapping a plurality of wind directions. A decrease in wind power reception can be avoided.
That is, when the support frame is set long in the east and west, the wind from the east and west passes to the east and west of the support frame, so that it is difficult for the wind to hit some of the lift type blades. Can be used effectively.

  A plurality of lift-type blades are arranged in a plurality of upper and lower stages on one of the longitudinal main shafts arranged on the support frame, and the plane phases are arranged at equal intervals. A plurality of the vertical main shafts are disposed on one support frame body in the horizontal direction to form one windmill.

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a main part front view of a vertical axis wind turbine according to a first embodiment of the present invention, and FIG. 2 is a main part plan view showing a plane phase of lift type blades of the vertical axis wind turbine.
In the figure, the support frame (4) is omitted from the illustration of the intermediate fixed arm and the bracing material. The base end portion of the support frame (4) is fixed to a concrete base (not shown).

In FIG. 1, the vertical wind turbine (1) has a shaft arrangement portion (4a) formed inside a support frame (4), which is composed of a plurality of support posts (2) and a fixed arm (3). ing.
A vertical main shaft (5) is vertically and rotatably supported on the shaft arrangement portion (4a) by upper and lower bearings (6) and (6). As the support column (2), a pipe material, an L-shaped material, an H-shaped material, a U-shaped material, or the like can be used. A plurality of short ones can also be connected.

  The base (7) in FIG. 1 is box-shaped, and a bearing (not shown) that supports the lower end portion of the longitudinal main shaft (5) is disposed therein. Further, in the base (7), a generator (not shown) is connected to the vertical main shaft (5) via an arbitrary transmission means, and a wind power generator is formed as a whole of the support frame (4). ing.

  The vertical main shaft (5) is provided with a plurality of fixed bodies (8) and (8) which are paired vertically. The shape of the fixed body (8) is, for example, a disk shape, a hole is formed in the center, and is fixed by being externally fitted to the vertical main shaft (5). It can also be screwed by pressing the left and right pieces.

  The fixed bodies (8) are arranged in four stages at regular intervals in FIG. For each set of fixed bodies (8), one set of upper and lower support arms (9) are arranged in parallel, and the base ends thereof are screwed to the fixed bodies (8).

The vertical distance between the upper and lower sets of support arms (9) is determined according to the height of the lift-type blade (10).
When the upper and lower support arms (9) are used as a set, the fixed bodies (8) are also provided in a set of three.

  The direction of the tip of each of the support arms (9) is different for each set from the upper stage to the lower stage, and as shown in FIG. 2, the uppermost support arm (9a) faces the front direction. The second stage support arm (9b) is disposed by turning 90 degrees in one direction of rotation (indicated by arrow A).

  The third stage support arm (9c) is further rotated 90 degrees in one direction of rotation, and the fourth stage support arm (9d) is also disposed about 90 degrees in one rotation direction. Is done. This direction of rotation may be counterclockwise or clockwise.

  As a result, the total turning angle from the uppermost support arm (9a) to the lowermost support arm (9d) is 360 degrees, which is a total of four 90 degree changes, as shown in FIG. In addition, the support arms (9a) to (9d) are arranged at equal intervals of 90 degrees in the plane phase.

  In FIG. 1, each of the upper and lower sets of support arms (9 a) to (9 d) has a vertically long lift type blade (10) at the tip of each support arm (9 a) to (9 d). It is fixed vertically so as to face the longitudinal main shaft (5). The fixing method of the support arms (9a) to (9d) and the lift type blade (10) is based on the size, weight, etc. of the lift type blade (10), screwing, bonding, FRP integral fixing, etc. It is selected appropriately.

The support arm (9) is rigid enough to support the lift-type blade (10) and has a shape with as little resistance as possible by wind. The illustrated support arms (9a) to (9d) are formed of, for example, an FRP plate having a thickness of about 5 mm.
This is because the weight of the lift-type blade (10) is as light as 1.3 kg when the chord length (front / rear width) is 20 cm and the height is 100 cm, for example.

Since the lift type blade (10) is required to be light, a core obtained by integrally molding a hard foamed resin molded body and an FRP outer layer are preferably used. Aggregates can be formed on the core.
The size of the lift type blade (10) is, for example, 100 cm to 180 cm in height, 16 cm to 30 cm in chord length, and 4 cm to 6 cm in thickness.

  In front view, the upper and lower ends of the lift-type blade (10) are inclined in the direction of the longitudinal main axis (5) to form an inclined portion (10a). When this inclination angle is larger than 45 degrees, the escape of the wind is reduced, and when the inclination angle is too small, the wind recovery rate is reduced. Therefore, a preferable angle is 30 degrees to 45 degrees.

  The transverse plane shape of the lifting type blade (10) is along the curve of the rotating track of the lifting type blade (10) on the outer surface during rotation, and swells in front of the surface facing the longitudinal main shaft (5). A protruding portion is formed.

  Thereby, the wind resistance at the time of rotation is small on the outer side surface at the time of rotation of the lift type blade (10). In addition, the bulging portion increases the wind speed on the inner side surface from the outer side surface side of the blades to generate lift, so that the swelled portion rotates by itself when the lift type blades (10) are rotated by wind power.

  In FIG. 1, the height of the vertical main shaft (5) is, for example, 7 m, and a reinforcing body (5a) is attached to the outer surface of the vertical main shaft (5a) except for the vicinity of the bearing. The reinforcing body (5a) is made of, for example, an FRP molded body, a single aluminum mold, or a combination thereof.

As shown in FIG. 1, the reinforcing body (5a) covers the fixed body (8) from the outside, thereby improving the weather resistance of the fixed portions of the support arms (9a) to (9d). be able to.
In this case, the connecting portion between the reinforcing body (5a) and the fixed body (8) can be bonded by being filled with a soft FRP resin and cured.

  The vertical wind turbine (1) configured as described above has four stages on the vertical main shaft (5) of 7 m, for example, even if the height of the lift-type blade (10) is as low as 1 m, for example. By arranging in a shape, the four-blade vertical wind turbine (1) has a large wind receiving area, and a strong axial torque can be obtained when it rotates.

  Since each lift type blade (10) in each stage is a single blade, there is no wind resistance on the opposite side of the longitudinal main shaft (5), and the rotation efficiency is high. And even for winds that change direction instantaneously, the lift-type blades (10) at each stage are each turned 90 degrees, so that a smooth and continuous wind force is applied like a 4-cylinder engine. Due to the force, a strong shaft torque can be obtained.

  In this case, when one lift type blade (10) is rotated by receiving wind force, the other lift type blades receiving the wind force as resistance are rotating by other force. Due to the lifting force in the centripetal direction due to the shape of 10), a self-propelled thrust is generated and rotates.

  Further, when the vertical main shaft (5) having a high height is used, a thin shaft is used within a range capable of withstanding a shear load in order to reduce the weight. Thereby, the thin vertical main shaft (5) bends due to the centrifugal force during rotation and the wind pressure applied to the lift-type blade (10).

  However, the vertical main shaft (5) bends during rotation by attaching a lightweight and rigid FRP or a lightweight alloy reinforcement body (5a) such as aluminum to the outer surface of the vertical main shaft (5). Will disappear. Further, since the FRP can be molded lightly, the entire longitudinal main shaft (5) can be lightened, and the rotation efficiency can be improved.

  In the first embodiment, the lift-type blades (10) are arranged in four stages. For example, the lift-type blades (10) are arranged in 12 stages by stacking the longitudinal main shaft (5) in three stages. can do.

  Further, the longitudinal main shaft (5) can be shortened, and the lift-type blades (10) can be arranged in three or six stages. In that case, the height of the upper and lower lift-type blades (10) can be changed to be longer or shorter. By increasing the chord length of one blade in each stage, a large shaft torque can be obtained.

  The chord length of the lift type blade (10) varies depending on the rotation radius of the lift type blade (10). For example, at the rotation radius, the angle between the front and rear ends of the lift type blade (10) and the axis is within 30 degrees, for example, The chord length of the lift-type blade (10) ranges from about 40% to 50% of the rotation radius of the lift-type blade (10), that is, when the rotation radius of the lift-type blade (10) is 1 m The length can be increased to a range of 40 cm to 50 cm.

  When the chord length of the lift type blade (10) is short, the rotational speed increases, but the shaft torque is small. Therefore, even if the rotation speed is increased, the shaft torque is reduced and the shaft torque is remarkably reduced when the wind speed is changed. However, if the chord length is increased as described above, the shaft torque is increased at a low speed even in a weak wind.

  As the lift-type blade (10) rotates, the air adheres to the side surface of the lift-type blade (10) and rotates due to its viscosity. As a result, the airflow entering the rotating track of the lift type blade (10) flows in the vertical direction of the lift type blade having a low resistance.

  However, if inclined portions (10a) facing inward are formed at the upper and lower end portions of the inner surface of the lift-type blade (10), the airflow that tends to flow in the vertical direction is blocked by the inclined portions (10a). Rarely, the lift-type blade (10) is pushed in the rotational direction, so the rotational efficiency of the lift-type blade (10) with the inclined portion (10a) is compared with that without the inclined portion (10a). For example, it is increased by 5% to 20%.

FIG. 3 is a front view of an essential part of a vertical axis wind turbine showing Embodiment 2 of the present invention, and FIG. 4 is a plan view of the essential part. The same parts as those in the previous example are denoted by the same reference numerals, and description thereof is omitted.
In the support frame (4) in the figure, illustration of an intermediate fixed arm, a bracing material, etc. is omitted.

In FIG. 3, the vertical main shaft (5) is supported by a plurality of intermediate bearings (66). Each intermediate bearing (66) is provided on a fixed arm (3) provided between the columns (2).
As a result, the vertical main shaft (5) is difficult to be bent as a whole, so that the metal vertical main shaft (5) can be made thin and light within a range capable of withstanding a shear load. Further, by attaching a reinforcing body (5a) to the outer surface of the vertical main shaft (5) except for the vicinity of the bearing, the metal vertical main shaft (5) can be made thinner and lighter. it can.

In FIG. 3, the lift-type blades (10) at the upper and lower stages are composed of two lift-type blades (10) provided so as to face each other with the longitudinal main shaft (5) interposed therebetween.
When there are two lift-type blades (10), it is advantageous for wind resistance to make the chord length (front-rear width) of the lift-type blade (10) considerably smaller than that of one blade.

  For example, it is preferable to correspond to half the chord length of one blade (10). Therefore, for example, when the rotational radius of the lift type blade (10) is 1 m, it is preferable that the chord length is equivalent to 20% to 25% of the radius at the maximum.

  The support arms (9a) to (9e) at the same level are set on the same radiation. As a result, the rotational balance of the two lift-type blades (10) at the same level during rotation is improved, and the rotational balance of the vertical axis wind turbine (1) as a whole is improved.

  As shown in FIG. 4, the top phase of the support arms (9 a) to (9 e) in the upper and lower stages is arranged so that the uppermost support arm (9 a) faces in the left-right direction. (9b) is arranged at a position changed 72 degrees in the rotation direction (indicated by arrow A).

  Further, the third-stage support arm (9c) is disposed at a position turned 72 degrees in the rotational direction. Hereinafter, the fourth-stage and fifth-stage support arms (9d) and (9e) are also arranged at positions that are each turned in the rotational direction by 72 degrees.

  As a result, the planar phases of the support arms (9a) to (9e) are 36 degrees in the rotational direction (9a), (9d), (9b), (9e), (9c) as shown in FIG. , (9a), (9d), (9b), (9e), and (9c) are set in a diverted array.

  In the vertical axis wind turbine (1) of the second embodiment configured as described above, the total number of lift-type blades (10) is 10 and the wind receiving area can be increased. Torque can be obtained.

  In particular, the wind receiving area of the vertical wind turbine (1) in the same installation area is overwhelmingly five times when the lifting blades (10) are arranged in five stages compared to one stage. The larger the wind turbine, the better.

  Further, as shown in FIG. 4, the plane phase of the lift-type blade (10) is displaced by 36 degrees in the rotation direction, so even if the wind direction changes instantaneously, any lift-type blade ( The wind force can be obtained in 10), and the airflow from the same direction can obtain a smooth and stable rotational force by the continuous wind force as in a multi-cylinder engine of an automobile.

In the second embodiment, the lift type blades (10) are arranged in five stages, but the lift type blades (10) are arranged in ten stages in a state where the longitudinal main shaft (5) is stacked in two stages. It can also be.
Further, the longitudinal main shaft (5) can be shortened, and the lift-type blade (10) can be made into three stages, four stages, and the like. In that case, the height of the upper and lower lift-type blades (10) can be changed to be longer or shorter.

FIG. 5 is a front view showing Embodiment 3 of the present invention. The same parts as those in the previous example are denoted by the same reference numerals, and description thereof is omitted.
In the support frame (4) in FIG. 5, illustration of an intermediate fixed arm, a bracing material, and the like is omitted.

The third embodiment is characterized in that a plurality of shaft arrangement portions (4a) arranged side by side are formed on one support frame (4), and a plurality of longitudinal main shafts (5) are arranged. There is.
In FIG. 5, two shaft arrangement portions (4a) are shown on the left and right sides, but they can be continuously formed with 10 or 20 in the horizontal direction.

  Thus, a large number of shaft arrangement portions (4a) are formed in one support frame (4), and the vertical main shaft (5) is arranged in each of them. Even if a plurality of lift-type blades (10) are arranged in multiple stages on each longitudinal main shaft (5), the adjacent blades (10) have different directions, so the wind is good and they rotate. Airflow interference caused by the adjacent lift-type blades (10) at the time is reduced.

In the vertical axis wind turbine (1) of the third embodiment configured as described above, a plurality of shaft arrangement portions (4a) are provided on one support frame (4), and as a whole, one vertical axis It is a windmill (1).
One lift-type blade (10) has a small wind receiving area, but a number of lift-type blades (10) are arranged in multiple stages on one longitudinal main shaft (5). Therefore, the wind receiving area of the plurality of lift-type blades (10) as a whole is large.

  As a result, each vertical main shaft (5) rotates a generator (not shown) in the base (7), and collects this power to produce a large-scale power generation as a whole. Wind power generator can be formed.

The lift type blade (10) in the third embodiment may be a two-blade arrangement shown in FIG.
Also, the number of stages of the lift-type blades (10) is made different, for example, 5 stages, 4 stages, 3 stages, and 5 stages, in the shaft arrangement part (4a) in the support frame (4) adjacent to the left and right. Can do. This is suitable, for example, when installing on uneven terrain.

  FIG. 6 is a plan view of an essential part of a vertical axis wind turbine showing Embodiment 4 of the present invention. The same parts as those in the previous example are denoted by the same reference numerals and description thereof is omitted. The support frame (4) in the figure does not show an intermediate fixed arm or bracing material.

  In Example 4 as well, a large number of shaft arrangement portions (4a) are continuously formed in one horizontal direction in one support frame (4), and each shaft arrangement portion (4a) Each is provided with a longitudinal main shaft (5).

  In FIG. 6, a plurality of shaft arrangement portions (4a) are connected in the left and right, but as shown in the figure, the shaft arrangement portions (4a) are staggered in the left and right directions, and each vertical main shaft. The planar phases arranged in (5) are arranged different from each other in the direction different from the connecting direction.

  In FIG. 6, for example, when the wind of arrow A is blowing and the lift type blade (10) in each longitudinal main shaft (5) rotates in the direction of arrow B, the lee of the lift type blade (10) is no wind. It becomes a state close to. Therefore, when the wind blows from the left-right direction in FIG. 6, it is difficult to receive the wind immediately after the upwind lift type blade (10).

  When the lift-type blade (10) rotates, the air layer adheres to the outer surface of the lift-type blade (10) and rotates due to the viscosity of the fluid. Therefore, the wind indicated by the arrow A moves backward as indicated by the arrow C. As a result, in FIG. 6, the wind indicated by the arrow D is in the direction indicated by the arrow E, and the leeward lift type blade (10) is rotated.

FIG. 7 is a main part front view showing Example 2 of the longitudinal main shaft (5), and FIG. 8 is a plan view thereof. The same parts as those in the previous example are denoted by the same reference numerals, and description thereof is omitted.
The longitudinal main shaft (5) has a short length and is configured to connect a plurality of the longitudinal main shafts (5) in the longitudinal direction.

  A fitting projection (5b) is formed on the upper end surface of the vertical main shaft (5). A fitting recess (5c) is formed on the lower end surface of the longitudinal main shaft (5). When connecting multiple vertical main shafts (5), the fitting protrusion (5b) is fitted into the fitting recess (5c) of the separate vertical main shaft (5), and the collar (5d) is fitted to the outside. Fix it together.

  In order to dispose the longitudinal main shaft (5) on the support frame (4), the collar (5d) is supported by the fixed arm (3) so that the intermediate bearing (66) contacts the portion of the collar (5d). Accordingly, the connecting portions (5b) and (5c) of the longitudinal main shaft (5) are firmly supported by the collar (5d), the intermediate bearing (66), the fixed arm (3), etc., and refraction is prevented.

  When the vertical main shaft (5) configured as described above is set so as to fit the length between the upper and lower portions of the intermediate bearing (66) shown in FIG. 3, for example, it is transported and the entire vertical wind turbine (1) is assembled. Work becomes easy.

FIG. 9 is a main part front view showing Embodiment 3 of the longitudinal main shaft of the present invention, and FIG. 10 is a plan view thereof. The same parts as those in the previous example are denoted by the same reference numerals, and description thereof is omitted.
The longitudinal main shaft (5) in this embodiment has a connecting shaft (5e) formed separately.

  In FIG. 9, concave fitting portions (5f) are formed on both end faces of the longitudinal main shaft (5), and anti-slip ridges (5g) are formed in the fitting portions (5f). Anti-skid grooves (5h) are formed on both end surfaces of the connecting shaft (5e).

  In use, the lower end portion of the connecting shaft (5e) is fitted into the fitting portion (5f) on the vertical main shaft (5). Further, the upper end portion of the connecting shaft (5e) is fitted into the fitting portion (5f) below the vertical main shaft (5). As a result, as shown in FIG. 9, a plurality of vertical main shafts (5) can be connected vertically.

  For example, the vertical main shaft (5) is used in the vertical wind turbine (1) of FIG. 3 to support the connecting shaft (5e) portion at the intermediate bearing (66) portion, so that the upper and lower intermediate bearings (66 ) Between the vertical main shafts (5) and the vertical main shaft (5) in the vertical direction of the support frame (4).

  The connecting shaft (5e) has a diameter of about 2 cm and a length of about 10 to 30 cm, for example. Even if the diameter is small, the connecting shaft (5e) is short and is supported by the bearing (66) in the middle. Further, since it is thin, a small bearing can be used, and since the friction area is small, the frictional resistance is small and the rotation efficiency is good.

Maintenance is also simple because only this connecting shaft (5e) needs to be replaced.
When a projecting fitting portion is formed at one end of the connecting shaft (5e) and a concave fitting portion is formed at the other end, the connecting shaft is connected to the fitting projecting portion and the recessed portion of the longitudinal main shaft (5) shown in FIG. be able to.

The diameter of the longitudinal main shaft (5) is, for example, 4 cm and a length of about 150 cm to 200 cm. If necessary, rigidity can be maintained by attaching the reinforcing body (5a) to the surface of the longitudinal main shaft (5).
The length of the vertical main shaft (5) is short, and there are at most two lift-type blades (10). Therefore, even if the diameter of the vertical main shaft (5) is thin, it is difficult to bend and is light in weight. Can be.

  In addition, this invention is not limited to each said Example, A design change can be suitably performed according to the objective. For example, the support arm (8) can be three in the vertical direction, or a brace can be arranged.

  By linking the generator to the vertical main shaft, it can be used as a wind power generator, as well as used for pumping, milling, and other industrial power.

It is a principal part front view of the vertical axis | shaft windmill which shows 1st Example of this invention. It is a principal part top view of the vertical axis | shaft windmill which shows 1st Example of this invention. It is a principal part front view of the vertical axis | shaft wind turbine which shows 2nd Example of this invention. It is a principal part top view of the vertical axis | shaft windmill which shows 2nd Example of this invention. It is a principal part front view of the vertical axis | shaft wind turbine which shows 3rd Example of this invention. It is a principal part front view of the vertical axis | shaft windmill which shows 4th Example of this invention. It is a principal part front view which shows Example 2 of a vertical main axis | shaft. It is a top view of the vertical main axis | shaft in FIG. It is a principal part front view which shows Example 3 of a vertical main shaft. FIG. 10 is a plan view of the longitudinal main axis in FIG. 9.

(1) Vertical axis windmill
(2) Prop
(3) Fixed arm
(4) Support frame
(4a) Shaft arrangement part
(5) Vertical spindle
(5a) Reinforcing body
(5b) Mating protrusion
(5c) Mating recess
(5d) Color
(5e) Connecting shaft
(5f) Fitting part
(5g) Non-slip ridge
(5h) non-slip groove
(6) Bearing
(66) Intermediate bearing
(7) Base
(8) Fixed body
(9) (9a) to (9e) Support arm
(10) Lift type blade
(10a) Inclined part

Claims (7)

In a wind turbine in which one vertically long lift type blade is arranged in a plurality of upper and lower stages around one of the vertical main shafts arranged in the shaft arrangement part of the support frame body, each lift type blade Forms an inclined portion that inclines in the longitudinal principal axis direction at the upper and lower end portions, and the plane phase of the lift-type blades is sequentially displaced from the upper step portion to the lower step portion in one direction of rotation with an equal angle, A vertical wind turbine comprising lift type blades arranged at equal intervals around a vertical main shaft. In a wind turbine in which two vertically long lifting blades are arranged in a plurality of upper and lower stages around one of the longitudinal main shafts arranged in the shaft arrangement part of the support frame body, each lifting type An inclined part that inclines in the longitudinal main axis direction is formed at the upper and lower ends of the blade, and the plane phase of the lift-type blade is sequentially displaced from the upper step portion to the lower step portion in one direction of rotation direction at an equal angle, As a whole, a vertical axis wind turbine comprising lift type blades arranged at equal intervals around a vertical main axis. The vertical wind turbine according to claim 1 or 2, wherein a longitudinal intermediate portion of the vertical main shaft is supported by a bearing, and lift type blades are disposed between the upper and lower bearings. Wherein the vertical main axis, with the exception of the vicinity of the shaft receiving portion, characterized in that a reinforcement on the surface are deposited, the vertical axis wind turbine according to any one of claims 1 to 3. A fitting projection is formed on one of the upper and lower end surfaces of each of the vertical main shafts, and a fitting recess is formed on the other, and the other fitting projection is fitted into the fitting recess of the vertical main shaft. The vertical axis wind turbine according to any one of claims 1 to 4, wherein the vertical main shaft is vertically connected to each other. A plurality of shaft arrangement portions arranged in the horizontal direction are formed on the support frame body, vertical main shafts are arranged on the respective shaft arrangement portions, and lift type blades are arranged around each main shaft. The vertical axis windmill according to any one of claims 1 to 5. In the support frame, characterized in that for each axis arrangement portion in which a plurality continuously provided in a horizontal direction, a planar phase, consisting by displacing each next to each other to continuously provided direction different directions, according to claim 6 Vertical axis windmill.

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