TW201331470A - A fluid power conversion system for electricity generation through a linear reciprocating motion of a device - Google Patents

Abstract

The present invention relates to a fluid power conversion system for electricity generation through a linear reciprocating motion of a device in a fluid field. The fluid power conversion system comprises a reciprocating motion device and a fluid power conversion device. The reciprocating motion device includes a first linear shaft perpendicular to a hypothetical incident direction of the fluid field, and a first moving component capable of moving in a linear reciprocating motion manner on the first linear shaft. The fluid power conversion device includes a first wing connected to the first moving component. A fluid of the fluid field can generate a lift force to the first wing so as to drive linear reciprocating movement of the first moving component on the first linear shaft. The first wing does not need different cord lengths, and can remain the angle with respect to the hypothetical incident direction except at a returning point of the reciprocating motion when the lift force is being generated, thereby maintaining a good performance. In addition, linear motion generates lower noise and has a low probability to hit creatures.

Description

Linear reciprocating fluid power conversion system for power generation

The present invention relates to a fluid power conversion system, and more particularly to a linear reciprocating fluid power conversion system for power generation.

The problems of greenhouse effect and global warming have led to various natural disasters. How to save energy and reduce carbon has become an important issue facing the world. The development of natural energy such as wind power, ocean current power generation, or wave power generation is a green energy technology suitable for development in Taiwan and many countries around the world.

Taking wind power as an example, the various types of fans currently used are mainly divided into horizontal axis and vertical axis fans. Both types of fans use rotational motion to drive generators to generate electricity. Horizontal-axis fan blades have different rotational tangential speeds at different radii, and the resistance to rotation of the blades is also different. The larger the radius, the larger the tangential speed, and the greater the resistance to rotation of the blades. Therefore, the general design will gradually reduce the chord length of the blade along the direction in which the radius increases, so as to moderately reduce the area and reduce the resistance. However, this also reduces the effective area of the thrust generated by the fan. The rotational tangential speeds at different radii are different. If the direction of the fluid inflow velocity is constant, the tangential velocity at different radii is different from the combined velocity of the inflow velocity, and the angle of attack of the fan airfoil is different, which is not easy to be different. The thrust is generated at the optimum angle of attack at the radius. The vertical axis type fan does not have the above problems, but the angle of attack formed between the fan blade and the wind direction changes with the rotation motion, and cannot be maintained at the optimal angle of attack to increase the output power of the fan.

In addition, regardless of the horizontal axis or vertical axis fan, the rotary periodic motion will produce significant noise, and the low pressure formed during high-speed rotation will cause small flying organisms to die, pollute the environment and destroy ecological events.

Accordingly, it is an object of the present invention to provide a linear reciprocating fluid power conversion system for power generation that improves the prior art.

Thus, the linear reciprocating fluid power conversion system for power generation of the present invention is placed in a first-class field and includes a linear moving device and a fluid power converting device.

The linear movement device includes a first linear axis that is perpendicular to a hypothetical inflow direction of the flow field and extends in a first direction, and a first movement that is linearly reciprocally mounted on the first linear axis Pieces.

The fluid power conversion device includes a first wing connected to the first moving member, and when the fluid of the flow field flows through the first airfoil, generating lift force on the first airfoil to drive the first moving member Reciprocating on the first linear axis. The first fin can maintain an angle with the assumed inflow direction except at the reciprocating return point.

Preferably, the linear reciprocating fluid power conversion system for generating electricity defines a second direction perpendicular to the first direction and perpendicular to a hypothetical inflow direction of the flow field, wherein the first fin is vertical The first section of the second direction is symmetrical to a first center chord, and the first center chord and the hypothetical inflow direction of the flow field are each clamped by an adjustable first angle. The inflow direction of the aforementioned assumption is from front to back, but the actual inflow direction of the flow field is usually varied.

Preferably, the linear reciprocating fluid power conversion system for generating electricity further comprises two phase-spaced sidewalls on opposite sides of the moving range of the fluid power conversion device, and a vane steering device, the vane steering device The utility model comprises a body connected to the first moving member and forming a first guiding groove, a limiting member connected to the first guiding piece and movable in the first guiding groove, and two respectively disposed on the side walls The first elastic members on the first elastic members are adapted to interfere with the first fins when moving adjacent to the side walls to change the direction of the first fins.

The body of the airfoil steering device may be further configured to have a base connected to the first moving member and a movable portion movable forward and backward relative to the base, the first guiding groove being formed on the movable portion, The adjustable range of the first angle provided by the first guide slot relative to the base portion is greater than the adjustable range of the first angle provided by the first guide slot relative to the base portion.

Preferably, the linear reciprocating fluid power conversion system for generating electricity, wherein the fluid power conversion device further comprises a second fin disposed behind the first fin, which can generate a large lift force The first moving member reciprocates on the first linear axis.

Preferably, the linear reciprocating fluid power conversion system for generating electricity, wherein the fin steering device is further configured to include two pushers respectively disposed on the side walls, the pushers are provided for The second flaps collide when moved adjacent to the side walls to redirect the second flap.

More preferably, the linear reciprocating fluid power conversion system for generating electricity, wherein the second cross section of the second fin perpendicular to the second direction is symmetrical to a second center string, and the second center string An adjustable second angle is clamped to the first center string.

More preferably, the linear reciprocating fluid power conversion system for generating electricity, wherein the fluid power conversion device further comprises a connecting one of the second fin and the first moving member and the first fin The second elastic element maintains the second angle unchanged during movement of the fluid power conversion device until the fluid power conversion device moves to the side walls to steer.

Even if the first fin is designed to have an angle with the assumed inflow direction, the second fin can be designed as its second central chord and the hypothetical of the flow field, provided that the second fin is designed. The inflow direction clips an adjustable third angle.

Preferably, the linear reciprocating fluid power conversion system for generating electricity, wherein the linear moving device further comprises a second linear axis parallel to and spaced apart from the first linear axis, and a linear reciprocating movement a second moving member mounted on the second linear shaft, the second linear shaft being located on a side of the fluid dynamic conversion device opposite to the first linear axis.

The effect of the invention is that the hydrodynamic conversion device replaces the rotation with a linear displacement, wherein the first fin and the second fin move at equal linear velocity at different positions, and when the lift is generated, in addition to the reciprocating return point, During the movement, the angle of the inflow can be changed without changing the chord length, so that the chord length does not need to be reduced, and the chord length of the airfoil can be used, and the hydrodynamic conversion can be performed with the optimal area and the optimal thrust. Output. The optimization of the aforementioned fin area and thrust is not the main technical feature of the present invention, and therefore there is not much ink in this document. Under the design of the present invention, the noise generated by the linear motion is much lower than the noise generated by the rotational motion, and the possibility of accidentally hitting the creature is also much lower.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the invention.

Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Fig. 1, a first preferred embodiment of the linear reciprocating fluid power conversion system for power generation of the present invention is placed in an air flow field, the assumed inflow direction H of the flow field is determined by the going, but actually assumed The inflow direction H will vary depending on environmental factors. The embodiment comprises a linear moving device 1 connected to a power generation system (not shown), a fluid power converting device 2, two side walls 4 extending substantially from the rear to the left and right, and a vane steering device 3.

The linear moving device 1 includes a first linear axis 11 that is perpendicular to the assumed inflow direction H of the flow field and extends along a first direction J1, and a linearly reciprocally mounted to the first linear axis 11 The first moving member 12 on the upper. In the present embodiment, the linear moving device 1 further includes a second linear shaft 13 and a second moving member 14, thereby improving the stability, but not limited thereto. The second linear axis 13 is located on a side of the fluid dynamic conversion device 2 opposite to the first linear axis 11 and is parallel and spaced apart from the first linear axis 11. That is, as shown in FIG. 1, the first linear shaft 11 and the second linear shaft 13 are disposed above and below the fluid power conversion device 2 one above another. The second moving member 14 is mounted on the second linear shaft 13 in a linear reciprocating manner.

The fluid power conversion device 2 includes a first fin 21 connected to the first moving member 12 and the second moving member 14. A second direction J2 perpendicular to the first direction J1 and perpendicular to the assumed inflow direction H of the flow field is defined. In this embodiment, the first moving member 12 and the second moving member 14 are connected to each other by a rotating shaft 15 extending in the second direction J2. The first flap 21 is disposed on the rotating shaft 15, and thus is substantially erect. .

Referring to FIG. 2, the first fin 21 is symmetrical to a first central chord G1 in a first section perpendicular to the second direction J2, and the first center chord G1 is connected to the front end and the rear of the first fin 21 end. The first fin 21 may also be asymmetric with respect to the first center chord G1 if, for example, the process of the reciprocating and complex motions is required to produce unequal lift. The first central chord G1 and the hypothetical inflow direction H of the flow field are each clamped by an adjustable first angle δ1. The first fin 21 is linearly displaced and the angle-changing technique is described later.

The side walls 4 are located on opposite sides of the left and right sides of the range of movement of the fluid power conversion device 2. The flap steering device 3 includes a body 31, a limiting member 32, and two first elastic members 33 respectively disposed on the side walls 4. The body 31 has a base portion 311 connected to the first moving member 12 and a movable portion 312 movable forward and backward relative to the base portion 311, for example, by connecting the base portion 311 with a sleeve. The movable portion 312 is formed with an arcuate first guiding groove 313. The top surface of the first fin 21 is formed with a second guiding groove 211 extending along the first central chord G1 for the limiting member 32 to slide. The limiting member 32 is slidably disposed on the second guiding slot 211 and is disposed in the first guiding slot 313 of the movable portion 312. The curved first guiding groove 313 has a length limit, and the limiting member 32 can only move between the two ends of the first guiding groove 313. Since the limiting member 32 is slidably disposed on the second guiding groove 211, the first guiding groove 313 of the movable portion 312 can be engaged with the first wing piece 21 to rotate around the rotating shaft 15. In the flow field, the fluid will push the first flap 21 to rotate around the rotating shaft 15 to drive the limiting member 32 to one end of the first guiding groove 313, and is continuously fixed to the first guiding groove 313 without any external force. The endpoint.

Referring to FIG. 2 and FIG. 3, adjusting the movable portion 312 to move forward and backward can control the first guiding groove 313 to be relatively close to and away from the base portion 311. The first guiding groove 313 is relatively close to the base portion 311 and provides the first angle δ1. The adjustable range is greater than the adjustable range of the first guiding groove 313 relative to the first angle δ1 provided by the base 311. The movable portion 312 can be adjusted to maintain the distance after being adjusted to a position at a required distance from the base portion 311. The maximum first angle δ1 optimized by the linear displacement efficiency can be obtained by calculation, and the control of the first angle δ1 range is realized by adjusting the movable portion 312, so that when the lift is generated, in addition to the reciprocating turn-back point, during the movement Can maintain the first angle δ1 unchanged. The calculation method of the aforementioned maximum first angle δ1 and linear displacement optimization is not the main technical feature of the present invention, and therefore is not described herein.

The first elastic members 33 are adapted to interfere with the first flap 21 when moved adjacent to the side walls 4 to redirect the first flap 21.

In this embodiment, the mechanism for the first elastic member 33 to change the direction of the first flap 21 is that the maximum force of the first elastic member 33 is the lift generated by the first flap 21, and the first elastic member 33 is subjected to the lift. During the pressing process, the angle between the first fin 21 and the assumed inflow direction H is also gradually changed, and thus the lift force is gradually reduced, so that the first elastic member 33 has sufficient elastic force to push the first flap 21 to rotate in the reverse direction. In other words, the first angle δ1 is gradually decreased by the maximum first angle δ1, and then, as long as the first fin 21 is turned to a position exceeding the first angle δ1 of 0° parallel to the assumed inflow direction H of the flow field, Then, the fluid of the flow field can push the first fin 21 to rotate to the position of the maximum first angle δ1 in the opposite direction along the assumed inflow direction H.

The first elastic member 33 of the embodiment includes a sleeve 331 , a first compression spring 332 received in the sleeve 331 , and a rod member that protrudes from the first compression spring 332 and partially protrudes from the sleeve 331 . 333, and a roller 334 connected to the outer end of the rod 333 for the first flap 21 to collide, thereby providing a strong elastic structural design.

Referring to FIG. 2 and FIG. 4, when the fluid of the flow field flows through the first fin 21, a lift force is generated on the first fin 21 to drive the rotating shaft 15 to make the first moving member 12 and the second moving member 14 respectively. The first linear axis 11 and the second linear axis 13 move toward the first direction J1 or opposite to the first direction J1. In the lift described in this embodiment, it is not indicated that the first flap 21 can be raised or lowered by this. In the direction shown in Fig. 1, the first flap 21 is displaced left and right by the lift. When the first flap 21 is moved to the side wall 4 adjacent to the right side, the first elastic member 33 is reversing against the corresponding first elastic member 33, and the first moving member 12 and the second moving member 14 are respectively driven on the first linear shaft 11 And moving on the second linear axis 13 toward the first direction J1.

Referring to FIG. 5, the first flap 21 is reversing against the corresponding first elastic member 33 when moving to the side wall 4 adjacent to the left side, and the first moving member 12 and the second moving member 14 are respectively driven. The first linear axis 11 and the second linear axis 13 move opposite to the first direction J1, and then return to the state of FIG. 4, and thus reciprocate.

Therefore, the kinetic energy of the airflow in the air flow field is converted into the kinetic energy of the first moving member 12 and the second moving member 14, and is converted into electric energy by the power generation system to supply electric power.

Referring to Figure 6, a second preferred embodiment of the linear reciprocating fluid power conversion system for power generation of the present invention is substantially identical to the first preferred embodiment, with the difference that each of the first preferred embodiments The elastic member 33, in the second preferred embodiment, is replaced by an active resilient member 35 comprising an elliptical wheel 351 and an end switch 352 that are interconnected.

When the first flap 21 is moved in the first direction J1 (shown by the arrow in Fig. 6), the elliptical wheel 351 will be pressed, causing the end point switch 352 to make a path, and the elliptical wheel 351 is rotated as shown in FIG. The length difference between the major axis and the minor axis of the elliptical wheel 351 is greater than or equal to the distance that the active elastic member 35 is required to turn the first fin 21 to be pushed. Therefore, the process of rotating the elliptical wheel 351 can push the first fin. 21 turns.

After the first flap 21 is turned, it will move in the opposite direction to the first direction J1 (as indicated by the arrow in FIG. 8), the pressure phenomenon of the elliptical runner 351 is released, the end point switch 352 is broken, and the elliptical runner 351 is restored. Starting position. At this point, the action of the flap turning is completed.

Referring to Figure 9, the third preferred embodiment of the linear reciprocating fluid power conversion system for power generation of the present invention is substantially the same as the first preferred embodiment, with the difference that the assumed inflow direction H is also The first linear axis 11 and the second linear axis 13 extend up and down, and are disposed left and right on the left and right sides of the fluid power conversion device 2, and connect the first moving member 12 and the second moving member The shaft 15 of the 14 extends left and right, and the first flap 21 is thus disposed substantially horizontally. In general, the movement mode of the fluid power conversion device 2 different from the first preferred embodiment is a left-right direction, and the third preferred embodiment is an up-and-down direction, which is suitable for application in a liquid flow field, such as an environment of the ocean and the tidal zone. It is applied to ocean current power generation or tidal power generation. The flow field characteristics of the ocean and the river are such that the water surface is wider than the water depth, so that the first fin 21 is suitable to be horizontally unfolded, and is not limited by the water depth. Moreover, the density of the fluid is large, and the weight of the airfoil can be adjusted to be equal to the density of the water, so that the movement of the airfoil is not affected by gravity, and the same lifting force can be moved upwards and downwards, which is favorable for the repeated movement of the upper and lower directions. .

Referring to FIG. 10, a fourth preferred embodiment of the linear reciprocating fluid power conversion system for generating electricity of the present invention is substantially the same as the first preferred embodiment, except that the fluid power conversion device 2 further includes a A second flap 22 behind the first flap 21, a second elastic member 23 connecting the first flap 21 and the rear end of the second flap 22, and a straight rod 221.

In the application of aircraft navigation, the use of the second wing is mainly due to the fact that when the aircraft takes off and land, the flight speed is low, so the lift coefficient of the wing needs to be increased to increase the lift generated by the wing. The use of the second wing, although significantly increasing the lift coefficient, will also increase the resistance in the main inflow direction, so after the aircraft takes off, the second wing will be retracted to reduce flight resistance. In the present embodiment, the increase in the resistance in the inflow direction has no adverse effect on the power generation efficiency, but the increase in the lift force can increase the power generation efficiency, so it is worthwhile to use the second fin.

The second fin 22 of the present embodiment is much smaller than the first fin 21, and the main purpose of providing the second fin 22 is to effectively increase the total lift coefficient of the overall airfoil structure (including the first fin 21 and the second fin 22). And reducing the first angle δ1 when the maximum lift is generated.

The second flap 22 can be pivotally connected to the rear of the first flap 21 or can be spaced apart from the first flap 21 . The manner of the pivotal connection and the arrangement of the partitions is not the focus of the present invention and will not be described herein. In this embodiment, the second elastic member 23 can also be disposed to connect the first moving member 12 and the rear end of the second flap 22. The flap steering device 3 further includes two pushers 34 respectively disposed on the side walls 4.

The second section of the second flap 22 perpendicular to the second direction J2 (penetrating into the paper surface) is symmetrical to a second center string G2, and the second center string G2 is sandwiched by the first center string G1. The adjusted second angle δ2, and thus also the assumed inflow direction H of the flow field, is adjustable by a third angle δ3. The straight rod 221 is disposed on the upper side of the second fin 22 and extends along a second center chord G2 of its corresponding side. In this embodiment, the second flap 22 can further include a straight rod 221 disposed on the lower side of the second flap 22, and two corresponding pushers 34 to steer the second flap 22 More stable.

The second elastic member 23 of the present embodiment includes two pivot rods 231 pivotally connected to the rear end of the second flap 22 and the rear end of the first flap 21, and a second compression spring connected between the two pivot rods 231. 232, and a sleeve 233 that is sleeved outside the two pivots 231 and the second compression spring 232. When the fluid in the flow field flows through the first fin 21 and the second fin 22, the first fin 21 and the second fin 22 generate lift force and move along the first direction J1, by the The connection of the second elastic element 23 to the first flap 21 keeps the second angle δ2 constant during the movement.

Referring to FIG. 11 and FIG. 12, the pushing members 34 are adapted to the bottom rod 221 of the second flap 22 to move adjacent to the side walls 4, so that the second flap 22 changes direction, thereby The hydrodynamic converter 2 is caused to reciprocate between the side walls 4.

The feasibility of using the pusher 34 to change the second angle δ2 of the second center chord G2 of the second fin 22 and the first center chord G1 and maintaining the second angle δ2 with the second elastic member 23 is as follows When the front end of the first flap 21 is changed by the first elastic member 33 to change the first angle δ1, the thrust of the first elastic member 33 applies a moment about the rotation of the rotating shaft 15 to the first flap 21, and the first flap The end of 21 is also affected by the moment of rotation in the same direction. The front end shaft 222 of the second flap 22 is disposed at the trailing end of the first flap 21, so that the front end of the second flap 22 is also subjected to the same turning moment when the first flap 21 is rotated. The moment generated by the first flap 21 is much greater than the torque required to rotate the second flap 22, so that the pusher 34 at the second flap 22 smoothly steers the second flap 22. As long as the moment generated by the elastic force of the second elastic member 23 relative to the front end shaft 222 of the second flap 22 is greater than the moment generated by the lift of the second flap 22 and smaller than the lift of the first flap 21 relative to the first The moment generated by the rotating shaft 15 connected to the flap 21 can cause the second flap 22 to smoothly change the second angle δ2 as the first angle δ1 of the first flap 21 changes, and after the second angle δ2 is changed The second angle δ2 is maintained to move the first moving member 12 in the opposite direction.

Similarly, the change of the second angle δ2 of the second fin 22 and the setting of maintaining the second angle δ2 can have a variety of different designs, but the passive design is the simplest.

Referring to Figure 13, the theoretical basis and the benefits that can be produced by the linear reciprocating fluid power conversion system for power generation of the present invention are described below. Considering a horizontally disposed airfoil 5, if the horizontal inflow velocity of the fluid is u, the airfoil 5 is subjected to lift, and the upward velocity is v, the fluid has a relative flow velocity v relative to the airfoil 5, and is synthesized. The resultant velocity is w, and the angle between the synthetic flow rate and the level is β. The angle of attack of the resultant flow velocity with the airfoil 5 is α, and the pitch angle of the airfoil 5 is θ = α + β. Since the flow direction and the flow velocity fluctuate at any time, the above-mentioned respective speeds, the α angle and the β angle change with the flow field, and thus the angular relationship can be known by adjusting the elevation angle θ of the airfoil 5 to maintain the airfoil 5 at the most Good angle of attack α.

The airfoil 5 is subjected to a fluid having a synthetic inflow velocity w, and generates a lift L perpendicular to the w inflow direction and a resistance D parallel to the inflow direction. The components of the two forces (L and D) in the vertical axis direction are Lcosβ-Dsinβ. = Ww ² A(C _L cosβ-C _D sinβ)= Ρw ² AC _η , where C _η =C _L cosβ-C _D sinβ, C _L and C _D are the lift coefficient and drag coefficient of the airfoil 5 at an angle of attack α respectively, and A is the airfoil 5 The projected area, A = b × c, b is the width of the airfoil 5 (not shown), and c is the chord length of the airfoil.

The component of the lift of the airfoil 5 in the vertical direction is L _η = Ρw ² AC _η , the airfoil 5 is subjected to this lift, and the moving speed in the vertical direction is v=w(sinβ), and the vertical direction motion suffers from the shape resistance D _p =C _p Ρv ² Acosθ=C _p ρ(wsinβ) ² Acos θ, Acos θ is the component of the airfoil 5 area in the vertical direction, so the net force of the airfoil 5 in the vertical direction is L _η -D _p = w w ² A(C _η -C _p sin ² βcos θ). The airfoil 5 is subjected to this net force and moves at a speed of v=w(sinβ) in the vertical direction, and the airfoil 5 can output

The power of C _p sin ² βcos(α+β)). If you want to solve the flow rate angle β that can output the best power, you can make =0 to find the β angle. In general, the C _L >>C _{D of the} airfoil 5 is initially estimated here, and the influence of C _D can be neglected. Therefore, C _η =C _L cosβ, the equation of output power can be simplified to P= Ρw ³ Asinβ(C _L cosβ-C _p sin ² βcos(α+β)), derivation =0 relationship, available

Cosβ(C _L cosβ-C _p sin ² βcos(α+β))+sinβ[-C _L sinβ-2C _p sinβcosβcos(α+β)+C _p sin ² βsin(α+β)]=0

Available after combination

C _L (cos ² β-sin ² β)-3C _p sin ² βcosβcos(α+β)+C _p sin ³ βsin(α+β)=0

Therefore

C _L cos2β-3C _p sin ² βcosβcos(α+β)+C _p sin ³ βsin(α+β)=0

Assume that the wing shape used has a lift coefficient C _L when the angle of attack is α=15°. 1.65, and the resistance coefficient of the plate moving perpendicular to the inflow velocity is C _p 2.00, then try and error can be solved by β 35.8°, then v=w(sin35.8°)=0.585w, or v=0.721u, at which time the power output coefficient sinβ(C _L cosβ-C _p sin ² βcos(α+β))=0.530. If the area covered by the inflow velocity is A, the total inflow energy is Ww ³ A, and the output power is P= Ρw ³ Asinβ(C _L cosβ-C _p sin ² βcos(α+β))=0.53 Ρw ³ A, it can be seen that under this condition, the output efficiency of the airfoil 5 is 0.53 or 53%.

In the above lift estimation, if the influence of C _D sinβ is considered, the total lift will decrease slightly. The β angle obtained by the condition of =0 will be slightly different from 35.8°, but will not be too far apart, because C _L >>C _D . From this calculation result, it is known that the composite speed w due to the action of the airfoil 5 is only slightly larger than the inflow velocity u, w. 1.233u, will not cause too much change to the environmental flow field, thus effectively reducing environmental noise, or sudden changes in pressure and other adverse effects.

In summary, the fluid power conversion device 2 moves at a linear speed, so that the first fin 21 and the second fin 22 move at equal linear speeds at different positions along the second direction J2, so The chord length of the first center chord G1 and the second center chord G2 is changed, and the area is not required to be reduced, and an chord-length fin may be used. The invention can also adjust the optimal first angle δ1 according to the calculation result, so that the lift force and the generated thrust force are maximized, and when the lift force is generated, the first angle δ1 can be maintained during the moving process except for the reciprocating turn-back point. The hydrodynamic conversion output is performed with the largest area, the optimal thrust, and the optimal first angle δ1. Moreover, the noise generated by the linear motion is much lower than the noise generated by the rotational motion, and the possibility of accidentally hitting the creature is also much reduced, so that the object of the present invention can be achieved.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

1. . . Linear mobile device

11. . . First linear axis

12. . . First moving piece

13. . . Second linear axis

14. . . Second moving piece

15. . . Rotating shaft

2. . . Fluid power conversion device

twenty one. . . First fin

211. . . Second guide slot

twenty two. . . Second fin

221. . . Straight rod

222. . . Front end shaft

twenty three. . . Second elastic element

231. . . Pivot

232. . . Second compression spring

233. . . casing

3. . . Vane steering device

31. . . Ontology

311. . . Base

312. . . Activities section

313. . . First channel

32. . . Limiter

33. . . First elastic element

331. . . Sleeve

332. . . First compression spring

333. . . Lever

334. . . Wheel

34. . . Pusher

35. . . Active elastic element

351. . . Elliptical runner

352. . . Endpoint switch

4. . . Side wall

5. . . Airfoil

G1. . . First center string

G2. . . Second center string

H. . . Hypothetical inflow direction

J1. . . First direction

J2. . . Second direction

Δ1. . . First angle

Δ2. . . Second angle

Δ3. . . Third angle

Figure 1 is a perspective view showing a first preferred embodiment of the linear reciprocating fluid power conversion system for power generation of the present invention;

Figure 2 is a top plan view showing the first preferred embodiment;

Figure 3 is a top plan view showing a first guide groove of the first preferred embodiment relatively adjacent to a base portion;

Figure 4 is a top plan view showing the first flap of the first preferred embodiment moving to a position adjacent to one of the side walls;

Figure 5 is a top plan view showing the first flap of the first preferred embodiment moved to adjacent the other side wall;

Figure 6 is a top plan view showing a second preferred embodiment of the linear reciprocating fluid power conversion system for power generation of the present invention;

Figure 7 is a top plan view showing a second preferred embodiment of the linear reciprocating fluid power conversion system for power generation of the present invention;

Figure 8 is a top plan view showing a second preferred embodiment of the linear reciprocating fluid power conversion system for power generation of the present invention;

Figure 9 is a perspective view showing a third preferred embodiment of the linear reciprocating fluid power conversion system for power generation of the present invention;

Figure 10 is a top plan view showing a fourth preferred embodiment of the linear reciprocating fluid power conversion system for power generation of the present invention;

Figure 11 is a top plan view showing the fluid power conversion device of the fourth preferred embodiment moved to adjacent one of the side walls;

Figure 12 is a top plan view showing the fluid power conversion device of the fourth preferred embodiment moved to the adjacent side wall; and

Figure 13 is a theoretical analysis diagram illustrating the theoretical basis of the linear reciprocating fluid power conversion system of the present invention for power generation.

1. . . Linear mobile device

11. . . First linear axis

12. . . First moving piece

13. . . Second linear axis

14. . . Second moving piece

15. . . Rotating shaft

2. . . Fluid power conversion device

twenty one. . . First fin

211. . . Second guide slot

3. . . Vane steering device

31. . . Ontology

311. . . Base

312. . . Activities section

313. . . First channel

32. . . Limiter

33. . . First elastic element

331. . . Sleeve

332. . . First compression spring

333. . . Lever

334. . . Wheel

4. . . Side wall

H. . . Hypothetical inflow direction

J1. . . First direction

J2. . . Second direction

Claims (12)

A linear reciprocating fluid power conversion system for generating electricity, placed in a first-class field, and comprising: a linear moving device comprising a first line extending perpendicular to a flow direction of the flow field and extending in a first direction a first moving member that is linearly reciprocally mounted on the first linear shaft; and a fluid power conversion device including a first flap coupled to the first moving member, in the flow When the fluid of the field flows through the first fin, a lift force is generated on the first fin to drive the first moving member to reciprocate on the first linear axis. The first fin can maintain an angle with the assumed inflow direction except at the reciprocating return point. A linear reciprocating fluid power conversion system for generating electricity according to claim 1, wherein a second direction perpendicular to the first direction and perpendicular to a hypothetical inflow direction of the flow field is defined, wherein the first The first section of the fin perpendicular to the second direction is symmetrical to a first center chord, and the first center chord and the hypothetical inflow direction of the flow field are each clamped by an adjustable first angle. The linear reciprocating fluid power conversion system for generating electricity according to claim 2, further comprising a two-phase spaced side wall on opposite sides of the moving range of the fluid power conversion device, and a wing steering device, the wing The sheet steering device includes a body connected to the first moving member and forming a first guiding slot, a limiting member connected to the first wing and movable in the first guiding slot, and two respectively disposed on the The first elastic members on the side walls, the first elastic members are adapted to interfere with the first fins when moving adjacent to the side walls to redirect the first fins. The linear reciprocating fluid power conversion system for generating electricity according to claim 3, wherein the body has a base connected to the first moving member and a movable portion movable forward and backward relative to the base, a first guiding groove is formed on the movable portion, the adjustable range of the first guiding groove provided adjacent to the base portion is larger than the adjustable range of the first guiding groove provided by the first guiding slot relative to the first angle . The linear reciprocating fluid power conversion system for generating electricity according to claim 3, wherein the fluid power conversion device further includes a second fin disposed behind the first fin, which can generate a larger The lifting force drives the first moving member to reciprocate on the first linear axis, and the wing steering device further comprises two pushing members respectively disposed on the side walls, the pushing members for the second wing The sheets collide when moved to adjacent the side walls to cause the second flap to change direction. The linear reciprocating fluid power conversion system for generating electricity according to claim 5, wherein the second cross section of the second fin perpendicular to the second direction is symmetric to a second center string, and the second The central string and the first central string are clamped by an adjustable second angle, the fluid power conversion device further comprising a first connecting the second flap and the first moving member and the first flap The two elastic members maintain the second angle unchanged during the movement of the fluid power conversion device. The linear reciprocating fluid power conversion system for generating electricity according to claim 6, wherein the second elastic member includes two pivots respectively pivotally connected to the rear end of the second fin and the rear end of the first fin. a rod, a second compression spring connected between the two pivot rods, and a sleeve connected to the two pivot rods and the second compression spring. The linear reciprocating fluid power conversion system for generating electricity according to claim 3, wherein each of the first elastic members comprises a sleeve, a first compression spring accommodated in the sleeve, and a resistance The first compression spring and a portion of the rod extending partially from the sleeve, and a roller coupled to the outer end of the rod for the first flap to collide, thereby providing a strong elastic structural design. The linear reciprocating fluid power conversion system for generating electricity according to claim 2, further comprising a two-phase spaced side wall on opposite sides of the moving range of the fluid power conversion device, and a wing steering device, the wing The sheet steering device includes a body connected to the first moving member and forming a first guiding slot, a limiting member connected to the first wing and movable in the first guiding slot, and two respectively disposed on the An active elastic element on the side wall, the active elastic element comprising an elliptical wheel and an end switch connected to each other, and when the first wing moves in the first direction, the elliptical wheel is pressed, so that The end point switch generates a passage, and starts the rotation of the elliptical wheel. The length difference between the long axis and the short axis of the elliptical wheel is greater than or equal to the distance that the active elastic element needs to push the first fin to be pushed, so the ellipse The process of turning the wheel can push the first flap to turn. The linear reciprocating fluid power conversion system for generating electricity according to claim 1, wherein the fluid power conversion device further includes a second fin disposed behind the first fin, in the flow field When the fluid flows through the second fin, a lift is generated on the second flap to drive the first moving member to reciprocate on the first linear axis. A linear reciprocating fluid power conversion system for generating electricity according to claim 9 of the patent application, defining a second direction perpendicular to the first direction and perpendicular to a hypothetical inflow direction of the flow field, wherein the second The second section of the fin perpendicular to the second direction is symmetrical to a second center chord, and the second center chord is clipped to the assumed inflow direction of the flow field by an adjustable third angle. The linear reciprocating fluid power conversion system for generating electricity according to any one of claims 1 to 11, wherein the linear moving device further comprises a second parallel and spaced apart from the first linear axis a linear shaft, and a second moving member linearly reciprocally mounted on the second linear shaft, the second linear shaft being located on a side of the fluid dynamic conversion device opposite to the first linear axis.