JP2007177776A - Phase inverting cross flow type power generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a new phase inverting cross flow type power generator which has never been before. <P>SOLUTION: The power generator is provided with a first type blade wheel 11 rotating in a first direction by receiving water flow, a second type blade wheel 12 rotating in a second direction opposite to the first direction by receiving the water flow, a first rotary shaft 21 provided coaxially with the first and second blade wheels rotating while engaging with the first type blade wheel, a second rotary shaft 22 rotating while engaging with the second type blade wheel and being inserted into an inside of the first rotary shaft in an axis direction, a power generating means comprising one or more magnets integrally rotating with either one of the first and second rotary shafts and one or more coils integrally rotating with the other rotary shaft, a first nozzle 41 accelerating the influent water flow toward the first type blade wheel, a second nozzle 42 accelerating the influent water flow toward the second type blade wheel, and a casing 31 in which the power generating means is hermetically enclosed in a water tight manner. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a phase inversion crossflow power generator.

Hydropower and wind power generation, which convert hydropower and wind energy into electrical energy, is a power generation method that does not consume global resources and does not involve environmental pollution. It is being recognized.
In particular, simple power generators that can be easily installed in rivers and waterways with a head and using water flow, or installed in the sea and using tidal currents to generate relatively small amounts of power, are used for leisure activities such as camping, It is getting attention from the aspect of securing the lifeline at the time of disaster.

  Such simple power generators can be broadly divided into an “axial flow type” that allows water to flow in the direction of the rotation axis of the rotor, and a “cross flow type” in which the rotation axis of the rotor (rotor) is installed in a direction that intersects the flow. And divided.

An axial flow type simple power generator is disclosed in Patent Document 1, for example.
A cross-flow type simple power generator is disclosed in Patent Document 2, for example.
Power generation by these simple power generators rotates the impeller by water flow, and the relative displacement between the magnet provided fixedly on the impeller as a rotor (rotor) and the coil provided on the stator (stator), This is done by inducing a voltage in the coil, but the electromotive force induced in the coil is proportional to the “time rate of change of magnetic flux across the coil”, and this rate of change is proportional to the relative speed between the magnet and the coil. In view of this point, Non-Patent Document 1 reports an “axial-flow generator” that increases the electromotive force by rotating a stator and a rotor with coils fixed in “opposite directions”.

JP 2001-248532 A JP2003-120499A Proceedings of the Japan Opportunity Society Fluid Engineering Division Lecture Summary Page 608 “Development of Phase Inverted Hydroelectric Generators” (2003. 9.11-20)

  This invention makes it a subject to implement | achieve the novel phase inversion crossflow type power generator which is not in the past.

The phase inversion crossflow type power generator of the present invention is a “crossflow type power generator having a rotating shaft in a direction crossing a water flow”, and includes a first type impeller, a second type impeller, a first rotating shaft, It has two rotating shafts, power generation means, first and second nozzles, and a casing.
The “first type impeller” is an impeller that rotates in a first direction in response to a water flow.
The “second type impeller” is an impeller that rotates in a “second direction opposite to the first direction” in response to a water flow.
The “first rotating shaft” is coaxial with the first and second type impellers, and is engaged with the first type impeller and rotated.

The “second rotating shaft” is engaged with the second type impeller and rotated, and is provided inside the first rotating shaft and penetrating in the axial direction.
The “power generation means” includes one or more magnets that rotate integrally with one of the first rotation shaft and the second rotation shaft, and one or more coils that rotate integrally with the other. Of course, the relative positional relationship between the magnet and the coil is set so that a voltage can be induced in the coil by the relative displacement between the magnet and the coil.

The “first nozzle” accelerates the inflowing water stream toward the first type impeller.
The “second nozzle” accelerates the inflowing water stream toward the second type impeller.
The “casing” hermetically seals the power generation means.

  The phase inversion cross-flow power generation device according to claim 1 includes: “an inlet that surrounds the first-type impeller and the second-type impeller and receives a water flow from the first and second nozzles; It is preferable to have a housing having a discharge port for discharging the water flow obtained by rotating the second type impeller. In this case, it is preferable that the discharge port of the housing has a “diffuser shape”. The housing may be integral with the first and second nozzles. That is, the first and second nozzles can be configured as part of the housing.

The phase-inversion cross-flow power generation device according to claim 1, 2, or 3 can have an “auxiliary nozzle that accelerates the water flow toward the first and second nozzles” (claim 4).
The phase-inversion cross-flow power generator according to any one of claims 1 to 4, wherein “the blades of the first-type impeller and the second-type impeller are movable and the radial direction of the impeller at a portion that receives water flow from the nozzles”. Then, after receiving the water flow and rotating the shaft, the position is changed so as to fall in a direction following the water flow at a portion close to the portion that receives the water flow by the nozzle.

The phase inversion cross-flow power generator according to claim 5 is provided with a cam that changes the state of the blades of the first and second type impellers coaxially with the first and second rotation shafts. It is fixedly provided in the space, and each of the blades of the first type wheel and the second type wheel is made swingable by supporting a part in the radial direction of the impeller, and one end portion in the radial direction of the impeller is cam follower. As follows. (Claim 6). In other words, by changing the position of the swingable blade by a cam, a portion that stands in the radial direction of the impeller at the portion that receives the water flow by the nozzle, rotates the shaft by receiving the water flow, and approaches the portion that receives the water flow by the nozzle Then sleep in the direction that follows the water flow. " The cam may be provided on the “shaft side of the first type impeller and the second type impeller” (claim 7).
The phase-inverted cross-flow type power generator “rotates the first and second type impellers, and the inlet that surrounds the first and second type impellers and receives the water flow from the first and second nozzles. In the case of having a “housing having a discharge port for discharging the water flow”, the cam can be “provided on the inner wall of the housing” (claim 8). The “cam provided on the inner wall of the housing” in claim 8 may be a “fixed cam configured in the shape of the inner wall itself” of the housing.

  Again, the housing may be integral with the first and second nozzles, and the first and second nozzles may be configured as part of the housing.

  The phase-inversion cross-flow power generator according to claim 6 includes a first-type impeller and a second-type impeller having “blade end locking means” coaxially with the rotation shaft. Each blade of the type 2 impeller is “swinged freely by being pivotally supported on the outer end side in the radial direction of the impeller”, and is configured to lock the swinging of the blade due to the water flow by the blade end locking means. (Claim 9).

  If it supplements a little, a 1st type impeller will engage with a 1st rotating shaft, will rotate a 1st rotating shaft by receiving a water flow and rotating to a 1st direction. The second type impeller is engaged with the second rotation shaft, receives the water flow, rotates in the “second direction opposite to the first direction”, and rotates the second rotation shaft. The first and second type impellers are the impellers defined as described above. As specific forms, both the first and second type impellers are constituted by a single impeller. In addition, one or both of the first-type and second-type impellers can be constituted by two or more impellers.

  In other words, taking the type 1 impeller as an example, the type 1 impeller can be configured as a “single impeller”, but it is “fixed in common to the first rotating shaft and receives a water flow. The first-type impeller can also be configured by two or more same-type impellers rotating in the first direction. The same applies to the type 2 impeller.

  As described above, the “power generation means” includes one or more magnets and one or more coils, and the one or more magnets rotate integrally with “one of the first rotating shaft and the second rotating shaft”. Rotates integrally with the other. For example, if one or more magnets rotate together with the first rotating shaft, the one or more coils rotate integrally with the second rotating shaft. In this case, the rotation of the magnet occurs in the “first direction”, and the rotation of the coil occurs in the “second direction”.

  In order to rotate the magnet / coil integrally with one or the other of the first and second rotating shafts, the magnet or coil may be directly fixed to the rotating shaft. May be fixed to the rotating shaft or provided integrally with the rotating shaft, and a magnet or a coil may be fixed to these supporting means. Thus, when the magnet or coil is “fixed to the rotating shaft via the support means”, the rotational speed of the magnet or coil increases.

  That is, the angular velocity of the first rotating shaft (assuming to rotate integrally with the coil) is “W1”, and the angular velocity of the second rotating shaft (assuming to rotate integrally with the magnet) is “−W2”. For example, the angular velocity of the second rotating shaft viewed from the first rotating shaft is “W1 + W2”, the rotating radius of the coil fixedly held via the support means is “r1”, and the rotating radius of the magnet is “r2”. Then, the relative speed of both is “r1 · W1 + r2 · W2”.

  As the radii of rotation: r1 and r2 increase, the relative speed between the coil and the magnet increases, and the temporal change in the magnetic flux across the coil also increases. Therefore, it is preferable to set the magnet and the coil appropriately large within the range in which the rotation of the impeller does not become heavy without increasing the size of the power generation means portion.

  The number of magnets / coils to be rotated integrally with the first and second rotating shafts is one in principle. The number of magnets / coils is not particularly limited and can be appropriately selected. However, from the practical viewpoint, it is preferably 2 or more, for example, 5 or more in order to reduce pulsation.

  In the case of having a “housing” as in the phase-inversion cross-flow power generation device according to claim 2, it is preferable that the outlet of the housing has a “diffuser shape” as in claim 3 (claim 3). .

  The water flow is accelerated by the first and second nozzles, rotated after the impeller, and then discharged from the discharge port of the housing. Even after the impeller is rotated, the flow velocity of the water flow remains in the housing The pressure head of the water flow toward the discharge port is lower than the pressure head outside the housing, and if the discharge port is formed as a mere opening in the housing, “ It is difficult for the “water flow after” to be discharged outside the housing.

  Therefore, as in claim 3, the discharge port has a “diffuser shape”, and by the action of this shape, the dynamic pressure is gradually reduced to increase the pressure head, thereby ensuring the water flow after rotating the impeller to the outside of the housing. Can be discharged.

  Further, by using the “auxiliary nozzle” as in claim 4, a “water flow having a larger flow velocity” can be supplied to the first and second type impellers, and the rotational speed of the impeller can be increased. . Also in this case, the diffuser shape of the housing discharge port works effectively.

  The “phase-inverted cross-flow power generation device” of the present invention basically assumes that the entire device is operated by immersing it in a water stream, and if the blade of the impeller is a “fixed wing”, the impeller After being subjected to the action of the driving water flow, the water pressure acts as a resistance force at a portion that returns to the position where the water flow action is applied again. Therefore, it is preferable to reduce the resistance as much as possible at the “return portion” that is not affected by the driving water flow.

  As in claim 5, each blade of the first type impeller and the second type impeller is movable, and in a portion that receives the water flow by the nozzle, it is made to “stand in the radial direction of the impeller sufficiently to receive the water flow”. After rotating the shaft in response to this, the position is changed so as to `` sleep in the direction following the water flow '' at the part that is close to the part that receives the water flow by the nozzle, thereby effectively reducing the resistance at the return part. To increase the rotational force.

  As described above, according to the present invention, a novel “phase-inverted cross-flow power generation device” can be realized. Since this “phase-inverted cross-flow type power generation device” is a cross-flow type, the blade shape of the impeller may be simpler than that of the axial flow type, is easy to manufacture, and is a phase-inverted type. Therefore, a large electromotive force can be obtained.

Hereinafter, embodiments will be described.
FIG. 1 is a diagram for explaining one embodiment of a “phase-inversion cross-flow power generation device”.

  Fig.1 (a) is the general | schematic figure which looked at the phase inversion crossflow type power generator from the inflow side of the water flow.

In FIG. 1A, reference numeral 31 denotes a casing for hermetically sealing the power generation means, reference numeral 41 denotes a first nozzle, reference numeral 42 denotes a second nozzle, and reference numeral 50 denotes a housing.
1 (b) is a cross-sectional view taken along line bb of FIG. 1 (a), FIG. 1 (c) is a cross-sectional view taken along line cc, and FIG. It is the general-view figure seen from the outflow side.

  In this embodiment, the horizontal size in FIGS. 1A and 1D is 500 mm, the height size is 300 mm, and the horizontal size in FIGS. 1B and 1C is about 700 mm. .

  As shown in FIG. 1A, when the phase-reversed cross-flow power generation device is viewed from the inflow side of the water flow, the casing 31 and the housing 50 are arranged in the left-right direction, and the housing 50 includes first and second nozzles 41. , 42 are connected, and the casing 31 seals the “power generation means” in a watertight manner. The water flow flows from the front side to the back side of the drawing in a direction orthogonal to the drawing of FIG.

  In FIG. 1B, reference numeral 12 denotes a second type impeller, reference numeral 22 denotes a second rotating shaft, and reference numeral 51 denotes a discharge port of the housing 50. In FIG.1 (c), the code | symbol 11 has shown the 1st type impeller, and the code | symbol 21 has each shown the 1st rotating shaft. As shown in these drawings, the first nozzle 41 and the second nozzle 42 are formed integrally with the housing 50 as a part of the housing 50.

  As shown in FIG. 1C, the water flow WI flows into the first nozzle 41 from the left side of the figure. The flow path cross section of the first nozzle 41 is narrowed from the inlet toward the jet nozzle 41A on the first type impeller 11 side, and the inflowing water flow WI travels through the first nozzle 41 toward the jet outlet 41A. The flow is accelerated by decreasing the “flow cross-sectional area”. The water flow accelerated and increased in flow velocity is ejected from the ejection hole 41A toward the blade 111 of the first type impeller 11, and after rotating the first type impeller 11 counterclockwise, becomes a water flow WF. It is discharged from the outlet 51 and becomes a water flow WO.

  As shown in FIG. 2B, the water flow WI flows into the second nozzle 42 from the left side of the figure. The flow path section of the second nozzle 42 becomes narrower from the inlet toward the jet outlet 42A on the second type impeller 12 side, and the inflowing water flow WI travels through the second nozzle 42 toward the jet outlet 42A. The flow is accelerated by decreasing the “flow cross-sectional area”. The water flow accelerated and increased in flow velocity is ejected from the ejection hole 42A toward the blade 121 of the second type impeller 12, and after rotating the second type impeller 12 clockwise, becomes a water flow WF. It is discharged from 51 and becomes a water stream WO.

As shown in FIG. 1D, in the housing 50, the first-type impeller 11 and the second-type impeller 12 are separated by a partition wall 52 of the housing 50, and water flows that rotate the respective impellers interfere with each other. It is supposed not to. The discharge port 51 formed in the housing 50 is opened in common with respect to the water flow in which the first type impeller 11 and the second main impeller 12 are rotated, as shown in FIGS. 1B and 1C. The “diffuser shape whose cross-sectional area gradually increases toward the discharge side end” is used.
In addition, as shown in FIGS. 1B to 1D, the first type impeller 11 has a base 11 </ b> A fixed to the first rotating shaft 21, and the second type impeller 12 is attached to the second rotating shaft 22. The base 12A is fixed. The first rotating shaft 21 has a hollow cylinder shape, the second rotating shaft 22 is arranged inside the first rotating shaft 11, and the first rotating shaft 21 is orthogonal to the drawings in the axial direction (FIGS. 1B and 1C). In the direction in which it is inserted).

  The first rotating shaft 21 and the second rotating shaft 22 are engaged with each other so as to be “rotatable around the axis”, and the first rotating shaft 21 is integrated with the first type impeller 11 in the first direction. The second rotating shaft 22 rotates in a second direction (clockwise in FIG. 1B) integrally with the second type impeller 12. As will be described below, the one or more magnets and the one or more coils included in the power generation means rotate integrally with the first rotating shaft 21 and the second rotating shaft.

  In addition, although the wings 111 and 121 of the first and second type impellers are drawn in a planar shape for the sake of simplicity of illustration, they are actually formed so that the water flow can be effectively received. Needless to say.

FIG. 2 illustrates the inside of the power generation apparatus in an explanatory manner.
As shown in the figure, the first type impeller 11 has its base portion 11A fixed to the first rotating shaft 21, and the second type impeller 12 has its base portion 12A fixed to the second rotating shaft 22.
The first rotating shaft 21 is hollow, and the second rotating shaft 22 penetrates inside the first rotating shaft 21 in the axial direction. The first rotating shaft 21 and the second rotating shaft 22 are coupled by a watertight bearing 210 so that the first rotating shaft 21 and the second rotating shaft 22 are “rotatable in any rotation direction with respect to each other”. ing. The watertight bearing 210 is, for example, a “water-repellent lubricant”.

  A flange-like support means 300 is integrally provided at the left end portion of the first rotating shaft 21, and a plurality of hollow cylinder-like bent portions formed at the radial end portions are provided on the inner peripheral surface of the first rotary shaft 21. The magnets 301 are fixed at regular intervals in the circumferential direction. The number of magnets is not particularly limited and can be appropriately selected. For example, it is about 10 to 32.

  On the other hand, in the vicinity of the left end portion of the second rotating shaft 22, a flange-like support means 303 is provided integrally with the second rotating shaft 22 and is formed in a hollow cylinder shape formed at the radial end portion thereof. The outer peripheral surface portion of the bent portion is opposed to the inner peripheral surface of the bent portion of the support means 303, and a plurality of coils 304 corresponding to the magnets 301 are fixed to the outer peripheral surface portion. The number of coils is not particularly limited and can be appropriately selected. For example, it is about 10 to 32.

  The coil 304 is connected to a commutator 306 by a conducting wire 305, and the voltage of the brush 307 that is in sliding contact with the commutator 306 is applied to the capacitor 308 and the load 309.

  The flange-shaped support means 300, 303, the plurality of magnets 301, the plurality of coils 304, the conducting wire 305, the commutator 306, and the brush 307 constitute “power generation means” and are sealed in the casing 31 in a watertight manner. In addition, it can replace with what consists of a commutator and a brush, and can use the bearingless thing which has a rotor and a stator as a component.

  That is, the power generator shown in FIG. 1 and FIG. 2 is a cross-flow power generator having a rotating shaft in the direction intersecting the water flow, and receives the water flow in the first direction (FIG. 1C). First type impeller 11 that rotates counterclockwise in FIG. 1 and second type impeller 12 that rotates in a second direction opposite to the first direction (clockwise in FIG. 1B) upon receiving a water flow. A first rotating shaft 21 that is coaxial with the first and second type impellers 11, 12, is engaged with the first type impeller 11, and is rotated with an engagement with the second type impeller 12. A second rotary shaft 22 penetrating in the axial direction inside the first rotary shaft 21, and one or more magnets 301 that rotate integrally with one of the first rotary shaft 21 and the second rotary shaft 22, And the power generation means including one or more coils 304 that rotate integrally with the other and the inflowing water flow WI toward the first type impeller 11 Has a first nozzle 41 that fast, the second nozzle 42 to accelerate toward the water flow WI Second Tanetsubasasha 12 flowing, and a casing 31 for sealing the power generating means watertight (claim 1).

  Further, the inlets 41A and 42A that surround the first-type impeller 11 and the second-type impeller 12 and receive the water flow from the first and second nozzles 41 and 42, and the first-type impeller 11 and the second The housing 50 has a discharge port 51 for discharging the water flow WE obtained by rotating the seed impeller 12 (Claim 2), and the discharge port 51 of the housing 50 has a diffuser shape (Claim 3).

FIG. 3 is a view for explaining one embodiment of the phase-inversion cross-flow power generator according to claim 4.
In this embodiment, the water flow is accelerated toward the first and second nozzles 41 and 42 in the phase-inversion cross-flow power generator described above with reference to FIGS. 1 and 2. An auxiliary nozzle 400 is provided (claim 4).
The auxiliary nozzle 400 has a cross-sectional area that gradually decreases from the inlet of the water flow WI (the left end in the figure) to the portion connected to the inlets of the first and second nozzles 41 and 42, and the incoming water flow WI is reduced. It is accelerated and flows into the first and second nozzles 41 and 42. The auxiliary nozzle 400 is separate from the main body of the phase-inverted crossflow power generator, and is installed in a portion where the flow velocity or the drop of the water flow of the phase-inverted crossflow power generator main body is small. 1. It arrange | positions so that it may connect with the 2nd nozzle side.

  The water flows flowing in from the first and second nozzles 41 and 42 are “accelerated further” by the nozzles 41 and 42, and are injected to the first and second type impellers 11 and 12. Thereby, it is possible to “increase the rotational speed of the impeller” further than in the case of the embodiment of FIGS.

  FIG. 4 is a diagram for explaining a characteristic part of the phase-inversion cross-flow power generation device according to claims 5 to 8. In order to avoid confusion, the same reference numerals as those in FIGS. 1 and 2 are attached to those which are not likely to be confused.

  The form of FIG. 4A shows “part of the second type impeller”. A cam 122 that changes the state of the blade 121 of the second type impeller coaxially with the second rotating shaft 22 is fixedly provided in the device space, and the blade 121 is attached to the ring-shaped support member 120 on the “impeller radius”. A part of the direction is pivotally supported by the shaft J ”, and the cam 122 is driven by the cam 122 as one end portion in the radial direction of the impeller (Claim 6).

  A pair of ring-shaped support members 120 are provided in a direction orthogonal to the drawing, and support both ends of the blade 121 in the width direction (direction orthogonal to the drawing) to be “swingable about the axis J”. Yes. The support member 120 is integral with the second rotation shaft 22 and rotates the second rotation shaft 22.

  The blades 121 stand in the radial direction of the impeller at the portion (the upper portion in FIG. 4A) that receives the water flow W1 by “the one end portion in the radial direction of the impeller follows the cam 122 as a cam follower”. After receiving and rotating the shaft, it swings so as to lie down in a direction following the water flow at a portion close to the portion that receives the water flow W1 by the nozzle, and changes its position. Due to this change in position, the portion that receives the water flow W1 effectively receives the water flow W1 and generates an effective torque to rotate the second rotating shaft. However, the water flow W2 obtained by rotating the second type impeller is applied to the blade. When it does not act, the wing 121 is in a position to sleep in a direction following the water flow, and the resistance is reduced (Claim 5).

In the embodiment of FIG. 4B, the wing 121 is attached to the pair of ring-shaped support members integrated with the second rotating shaft 22 as in the case of FIG. Is pivotally supported by a shaft J ”.
In this embodiment, the first type impeller and the second type impeller surround the inlet that receives the water flow W1 from the first and second nozzles, and the water flow obtained by rotating the first and second type impellers. A cam 123 having a housing having a discharge port for discharging W2 and controlling the swing of the blade 121 is provided on the inner wall of the housing (claim 8).

  The water flow W1 causes the fluid pressure to act on the blade 121 to rotate the second rotating shaft 22 together with the support member 120. At this time, the portion where the blade 121 effectively receives the water flow W1 stands in the radial direction of the impeller, rotates the shaft 22 by receiving the water flow, and then sleeps in a direction following the water flow at a portion approaching the portion receiving the water flow W1 again. To change the position. The cam 123 acts on the end of the blade 121 in the radial direction of the impeller and controls the swing of the blade 121 so as to cause the above-described change of position.

  The driving of the blades of the first type impeller is the same as described above.

  The layer reversal crossflow generator shown in the embodiment in FIG. 4 is effective when the first and second type impellers are rotated at a high speed of, for example, about 300 rpm to 2400 rpm.

  FIG. 5 shows an embodiment of the phase inversion crossflow power generator according to claim 9. In order to avoid complications, the same reference numerals as those in FIGS. 1, 2, and 4 are attached to those that are not likely to be confused.

  The rotation of the type 2 impeller will be described. The type 2 impeller has a pair of blade end locking means 23 coaxially with the rotation axis. The blade end locking means 23 is disk-shaped and fixed to the second rotating shaft 22, and a plurality of locking pins 230 are implanted at equal intervals around the periphery thereof.

  Each blade 121 is swingable on the outer end side in the radial direction of the impeller by being pivotally supported by the pair of ring-shaped support members 120A by the axis J1, and the blade end is caused to swing by the water flow W1. It is locked by the locking means 23.

  The water flow W1 applies a flow pressure to the blades 121 to rotate the second rotating shaft 22 together with the support member 120A. At this time, at the portion where the blade 121 effectively receives the water flow W1, as shown in the drawing, the free end side of the blade 121 is locked by the locking pin 230, so that the blade 121 stands in the radial direction of the impeller, but receives the water flow W1. After rotating the shaft 22, the lock by the locking pin 230 of the wing 121 is released at a portion close to the portion that receives the water flow by the nozzle, and the greedy 121 changes its position to “sleep in the direction following the water flow”. To effectively reduce the water supply at this site.

  This type of form is effective when the first and second type impellers are rotated at a rotational speed of, for example, about 80 rpm to 300 rpm.

It is a figure for demonstrating one Embodiment of a phase inversion crossflow type electric power generating apparatus. It is a figure for demonstrating the part of the electric power generation means in embodiment of FIG. It is a figure for demonstrating one Embodiment of the invention of Claim 4. It is a figure for demonstrating the characterizing part of embodiment of invention of Claims 5-8. It is a figure for demonstrating the characterizing part of embodiment of invention of Claim 9.

Explanation of symbols

11 first type impeller 12 second type impeller 21 first rotating shaft 22 second rotating shaft 30 power generation means 41 first nozzle 42 second nozzle 31 casing

Claims (9)

A cross flow type power generator having a rotation axis in the direction intersecting the water flow,
A first type impeller that rotates in a first direction in response to a water flow;
A second type impeller that receives a water flow and rotates in a second direction opposite to the first direction;
A first rotating shaft that is coaxial with the first and second type impellers and is rotated by engaging with the first type impeller;
A second rotating shaft that is engaged with and rotated by the second type impeller and penetrates in the axial direction inside the first rotating shaft;
Power generation means including one or more magnets that rotate integrally with one of the first rotation shaft and the second rotation shaft, and one or more coils that rotate integrally with the other;
A first nozzle for accelerating the inflowing water stream toward the first type impeller,
A second nozzle for accelerating the inflowing water stream toward the second type impeller,
A phase inversion cross-flow power generation device comprising a casing for watertightly sealing the power generation means. In the phase inversion crossflow type power generator according to claim 1,
Surrounding the first type impeller and the second type impeller and receiving the water flow from the first and second nozzles, and discharging the water flow rotating the first type impeller and the second type impeller A phase-inversion cross-flow power generation device comprising a housing having a discharge port to be discharged. In the phase inversion crossflow type power generator according to claim 2,
A phase inversion cross-flow power generator characterized in that a discharge port of a housing has a diffuser shape. In the phase inversion crossflow type power generator according to claim 1, 2 or 3,
A phase-inversion cross-flow power generator having an auxiliary nozzle for accelerating water flow toward the first and second nozzles. In the phase inversion crossflow type power generator according to any one of claims 1 to 4,
Each blade of the first type impeller and the second type impeller is movable and stands in the radial direction of the impeller at a portion that receives the water flow by the nozzle, receives the water flow, rotates the shaft, and then receives the water flow by the nozzle. A phase-inversion cross-flow power generator characterized in that the position is changed so as to fall in a direction following a water flow at a part approaching the part. In the phase inversion crossflow type power generator according to claim 5,
A cam that changes the state of the blades of the first type impeller and the second type impeller is fixedly provided in the device space coaxially with the first rotary shaft and the second rotary shaft.
Each blade of the first type impeller and the second type impeller is swingably supported by a part of the impeller radial direction, and is driven by the cam using one end portion in the radial direction of the impeller as a cam follower. A phase inversion cross-flow power generator characterized by that. In the phase inversion crossflow type power generator according to claim 6,
A phase-inverted cross-flow power generator characterized in that a cam is provided on the shaft side of the first type impeller and the second type impeller. In the phase inversion crossflow type power generator according to claim 6,
An inlet that surrounds the first-type impeller and the second-type impeller and receives the water flow from the first and second nozzles, and an outlet that discharges the water flow obtained by rotating the first and second-type impellers And a housing with
A phase-inversion cross-flow power generator characterized in that a cam is provided on the inner wall of the housing. In the phase inversion crossflow type power generator according to claim 6,
The first type impeller and the second type impeller have blade end locking means coaxially with the rotation shaft,
The blades of the first type wheel and the second type wheel are pivotally supported on the outer end side in the radial direction of the wheel and can swing freely. A phase inversion cross-flow power generation device characterized in that it is configured to be locked by means.

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