KR102508134B1 - Rim Driven Small Hydro Generator - Google Patents

Abstract

The present invention relates to a rim driven small hydro power generator. More specifically, the rim driven small hydro power generator of the present invention comprises a rim formed in a ring shape. A permanent magnet is provided on the outer circumferential surface of the rim. The inner circumferential surface of the rim is provided with: a rotor equipped with blades to generate a rotational motion through a fluid flowing in a drain pipe; and a frame formed to have a larger diameter than the rotor. The inside of the frame is provided with: a stator provided with a coil capable of generating an electric energy according to the rotation of the rotor corresponding to the permanent magnet; and a support plate connected to the drain pipe while supporting the front and the rear of the stator and the rotor. Provided is the rim driven small hydro power generator capable of maximizing power generation efficiency.

Description

Rim Driven Small Hydro Generator {Rim Driven Small Hydro Generator}

The present invention relates to a rim driven small hydro power generator, and more particularly, to a rim driven small hydro power generator provided integrally with a drain pipe to enable small hydro power generation using a fluid flow flowing inside the drain pipe.

In general, hydroelectric power refers to a power generation method that converts the potential energy of water into the kinetic energy of a generator turbine using the drop of water located in a high place to obtain electricity. .

Accordingly, small hydro power generation is attracting attention as an eco-friendly energy source because it does not affect the surrounding natural environment and is configured relatively simply.

Such small-scale hydropower generation has the effect of replacing petroleum imports, has excellent supply stability compared to climate-related natural energies such as solar and wind power, and has the advantage of contributing to regional distributed power generation.

On the other hand, conventional small hydro power generators require extensive construction to be installed in a drain pipe, and are not easy to maintain and repair, resulting in low efficiency.

For example, Patent Document 1 discloses a technology related to a “pipeline built-in small hydro power generator”, and the invention adjusts the angle of the blade according to the flow rate so that the blade rotates at a constant speed, thereby preventing overload of the generator due to excessive flow rate. It relates to a pipe-embedded small hydro power generator capable of preventing

The small hydro generator according to the above invention has an advantage in that it can produce stable power regardless of the flow rate flowing through the drain pipe, but the structure is complicated, the repairability is poor, and the watertightness is unstable, so the failure rate may increase. this remains

Republic of Korea Patent Registration No. 10-1944805

Therefore, the present invention has been made to solve the problems of the prior art as described above, and is provided integrally with the drain pipe, by applying a method in which the rim including the blade is rotated and driven, thereby maximizing the power generation efficiency. A driven small hydro power generator is intended for that purpose.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems to be solved by the present invention that are not mentioned here are to those of ordinary skill in the art to which the present invention belongs from the description below. will be clearly understood.

In order to achieve the above object, a rim driven small hydro power generator according to the present invention includes a rim formed in a ring shape, a permanent magnet is provided on an outer circumferential surface of the rim, and a fluid flowing in a drain pipe is disposed on an inner circumferential surface of the rim. A rotor provided with blades to generate rotational motion through a rotor, and a frame formed to have a diameter larger than that of the rotor, the inside of the frame corresponding to the permanent magnet, so as to generate electricity according to the rotation of the rotor. It is characterized in that it includes a stator equipped with a coil capable of generating energy, and a support plate connected to the drain pipe while supporting the front and rear sides of the stator and the rotor.

In addition, in the present invention, a branch gap is formed between the front and rear ends of the rim and the support plate, respectively, and some of the liquid flowing in the drain pipe is introduced into the space between the rotor and the stator through the branch gap, and then again By coming out of the drain pipe, it is characterized in that the permanent magnet and the coil can be cooled.

In addition, the permanent magnet and the coil of the present invention are molded with an epoxy-based material, so that they can be prevented from being corroded by the fluid.

In addition, the support plate of the present invention is provided on one side of the support plate and includes a plurality of bearings in contact with the outer circumferential surface of the rim, and the rim is closely supported by the bearing, so that the rotor can maintain a free rotation state. characterized by being able to

In addition, the blade of the present invention is characterized in that it is provided with a plurality and is formed to protrude from the inner circumferential surface of the rotor toward the center of rotation of the rotor.

As described above, according to the present invention, since the rim driven small hydro power generator can be installed on a pre-installed pipe, maintenance and repair can be facilitated.

In addition, the rim driven small hydro power generator of the present invention has a simple and compact structure, so that it can be reduced in size and weight.

In addition, since the stator and the rotor of the rim-driven small hydro power generator of the present invention are formed in a waterproof structure, durability can be improved.

In addition, since the rim-driven small hydro power generator of the present invention is formed so as not to be caught by foreign substances, there is an effect that the failure rate can be minimized.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the detailed description and claims.

1 is a perspective view showing a state in which a rim driven small hydro power generator according to the present invention is installed in a drain pipe.
2 is an exploded perspective view showing a disassembled rim-driven small hydro power generator installed in a drain pipe according to the present invention.
3 is a cross-sectional view showing a side of a rim driven small hydro power generator according to the present invention.
4 is a cross-sectional view showing the front of a rim driven small hydro power generator according to the present invention.
5 is a perspective view showing a cross section of a rim driven small hydro power generator according to the present invention.
6 is a perspective view of a rim driven small hydro power generator as viewed from the front side according to the present invention.
FIG. 7 is a view of FIG. 5 (A) viewed from the front.
FIG. 8 is a view showing a path in which liquid flows into the space between the stator and the rotor in FIG. 7 and exits again.
FIG. 9 is an enlarged view of the left side of FIG. 7 based on the permanent magnet, and is a view showing a portion where fluid flows into a branch gap formed between the rim and the support plate.
FIG. 10 is an enlarged view of the right side of FIG. 7 based on the permanent magnet, and is a view showing a portion through which fluid escapes through a branch gap formed between the rim and the support plate.

The terms used in this specification will be briefly described, and the present invention will be described in detail.

The terms used in the present invention have been selected from general terms that are currently widely used as much as possible while considering the functions in the present invention, but these may vary depending on the intention of a person skilled in the art or precedent, the emergence of new technologies, and the like. Therefore, the term used in the present invention should be defined based on the meaning of the term and the overall content of the present invention, not simply the name of the term.

In the entire specification, when a certain part is said to "include" a certain component, this means that it may further include other components without excluding other components unless otherwise stated.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein.

The specific details, including the problem to be solved, the means for solving the problem, and the effect of the invention with respect to the present invention are included in the embodiments and drawings to be described below. Advantages and features of the present invention, and methods for achieving them, will become clear with reference to the embodiments described below in detail in conjunction with the accompanying drawings.

1 is a perspective view showing a rim driven small hydro power generator according to the present invention installed in a drain pipe, FIG. 2 is an exploded perspective view showing a disassembled state of a rim driven small hydro power generator installed in a drain pipe according to the present invention, and FIG. 3 is an exploded perspective view of the present invention 4 is a cross-sectional view showing the front of the rim driven small hydro power generator according to the present invention, and FIG. 5 is a perspective view showing a cross section of the rim driven small hydro power generator according to the present invention. 6 is a perspective view of the rim driven small hydro power generator viewed from the front side, FIG. 7 is a front view of FIG. 5 (A), and FIG. 8 is a view showing liquid flowing into the space between the stator and the rotor in FIG. 7 FIG. 9 is an enlarged view of the left side with respect to the permanent magnet in FIG. 7, showing the portion where the fluid flows into the branch gap formed between the rim and the support plate, FIG. 10 is In FIG. 7, the right side is enlarged based on the permanent magnet, and it is a view showing a portion where fluid escapes through a branch gap formed between the rim and the support plate.

Hereinafter, the rim driven small hydro power generator 1 according to the present invention will be described in detail with reference to the accompanying drawings.

First, with respect to the front and rear directions of the rim driven small hydro power generator 1 of the present embodiment, the present invention will be described by defining the negative direction of the X-axis shown in FIG. 1 as 'front' and the both directions as 'rear'. That is, the direction in which the fluid flowing inside the drain pipe is introduced may be referred to as 'front', and the direction in which the fluid exits may be referred to as 'rear'. This is only for explanation so that the present invention can be clearly understood, and each direction may be defined differently depending on where the reference is placed.

1 to 6, the rim driven small hydro power generator 1 according to the present invention includes a rim 11 formed in a ring shape, and a permanent magnet 12 is provided on an outer circumferential surface of the rim 11 And, on the inner circumferential surface of the rim 11, a rotor 10 equipped with a blade 13 to generate rotational motion through the fluid flowing in the drain pipe A, having a larger diameter than the rotor 10 A coil 22 capable of generating electric energy according to the rotation of the rotor 10 corresponding to the permanent magnet 12 inside the frame 21, but including a frame 21 formed to It includes a stator 20 and a support plate 30 connected to the drain pipe A while supporting the front and rear sides of the stator 20 and the rotor 10.

First, the rotor 10 is provided. The rotor 10 is composed of a rotating part in the rim-driven small hydro generator 1, and includes the rim 11, permanent magnets 12, and blades 13.

The rim 11 is a part corresponding to the main body of the rotor 10 and is formed in a ring shape so that the fluid flowing in the drain pipe A can pass therethrough. In addition, the rim 11 may be configured in three stages based on the direction in which the fluid passes. In other words, the rim 11 may be separated into three parts based on the direction in which the fluid passes.

The permanent magnet 12 is provided on the outer circumferential surface of the rim 11 . The permanent magnet 12 is formed so that magnetization is in one direction, and is provided as a magnet in a state in which magnetization is not easily lost. That is, the permanent magnet 12 is provided as a magnet that does not permanently lose its magnetic force. In addition, the permanent magnet 12 is formed by mixing another material with a natural ferromagnetic material such as iron to form a large magnetic force.

The blade 13 is provided on the inner circumferential surface of the rim 11 . The blade 13 is provided so that the rotor 10 can rotate by the fluid flowing in the drain pipe A. The blades 13 are provided in plural, and may protrude from the inner circumferential surface of the rotor 10 toward the center of rotation of the rotor 10 . In other words, the blade 13 may be formed in a twisted shape.

Next, the stator 20 is provided. The stator 20 is composed of a fixed part in the rim driven small hydro power generator 1, and includes the frame 21 and the coil 22.

The frame 21 is a part corresponding to the main body of the stator 20 and is formed in a ring shape to surround the rotor 10 from the outside. Accordingly, the frame 21 is formed to have a larger diameter than the rotor 10 . And, the frame 21 is formed with a smaller width than the rotor 10 .

The coil 22 is composed of a closed loop-shaped wire formed of a thin metal wire through which current can flow. The coil 22 is provided inside the frame 21 . The coil 22 may generate electrical energy according to the rotation of the rotor 10 in response to the permanent magnet 12 . More specifically, when the rotor 10 is rotated by the blades 13, induced electromotive force is generated by the permanent magnet 12, and the coil 22 converts this induced electromotive force into electrical energy. can make it

In addition, the stator 20 may further include a socket 23 capable of moving the electrical energy converted by the coil 22 . The socket 23 may be formed on an outer circumferential surface of the frame. Of course, the socket 23 may be provided in plurality.

In addition, the permanent magnet 12 and the coil 22 may be molded with an epoxy-based material. Accordingly, the permanent magnet 12 and the coil 22 can be prevented from being corroded by the fluid.

Next, the support plate 30 is provided. The support plate 30 is provided between the stator 20 and the rotor 10 . That is, the support plate 30 is provided in plurality, and covers and supports the stator 20 and the rotor 10 from the front and rear. In other words, the support plate 30 may cover and support both sides of the frame 21 and the rim 11 . In addition, the support plate 30 may be connected to the drain pipe (A), and allow the fluid flowing in the drain pipe (A) to pass through the inside of the rotor (10).

In addition, the support plate 30 is provided on one side of the support plate 30 and includes a plurality of bearings 31 in contact with the outer circumferential surface of the rim 11 .

The bearing 31 is provided to reduce rotational frictional force generated when the rotor 10 rotates. The bearing 31 may be provided in the form of, for example, a dial ball bearing 31 having iron beads inside. Also, the bearings 31 may be arranged in multiple rows on the rim 11 .

In addition, the bearing 31 is provided on the inside of the support plate 30 in a state where the support plate 30 is disposed between the stator 20 and the rotor 10, and the outer circumferential surface of the rim 11 can come into contact with In other words, the rim 11 can rotate while being supported by the bearing 31 . As a result, since the rim 11 is closely supported by the bearing 31, the rotor 10 can maintain a free rotation state.

In addition, branch gaps 40 are formed between both front and rear ends of the rim 11 and the support plate 30, respectively. Some of the liquid flowing in the drain pipe (A) may be introduced into the space between the rotor 10 and the stator 20 through the branch gap 40 and then come out again through the drain pipe (A). there is. As a result, since the liquid flows into the rotor 10 and the stator 20 through the branch gap 40 , the permanent magnet 12 and the coil 22 may be cooled.

Also, referring to FIGS. 9 and 10 , the rim 11 includes a front inclined portion 111 , a magnet seating portion 112 and a rear inclined portion 113 .

Referring to FIG. 9 , the front inclined portion 111 is formed toward the front of the rim 11 . The front inclined portion 111 is in contact with the bearing 31 and allows the fluid to flow into the permanent magnet 12 and the coil 22 .

More specifically, the front inclined portion 111 includes a front inclined surface 1111, a front bottom surface 1112, a front first protruding surface 1113 and a front second protruding surface 1114.

The front inclined surface 1111 is formed to be continuous with the end of the branch gap 40 . The front inclined surface 1111 is inclined upward so that the liquid flowing into the branch gap 40 can flow into the permanent magnet 12 and the coil 22 .

The front bottom surface 1112 is formed to be continuous with the end of the front inclined surface 1111. The front bottom surface 1112 is formed as a bottom surface to be in contact with the bearing 31 . In other words, the front bottom surface 1112 is formed in a straight line at the end of the front inclined surface 1111 in the same direction as the flow of the fluid.

The front first protruding surface 1113 is formed in a continuous form with the end of the front bottom surface 1112 . The first forward protruding surface 1113 is formed in a straight line in the same direction as the flow of the fluid. Also, the front first protruding surface 1113 protrudes toward the frame 21 more than the front bottom surface 1112 .

The front second protruding surface 1114 is formed to be continuous with the end of the front first protruding surface 1113. The front second protruding surface 1114 is formed in a straight line in the same direction as the flow of the fluid. Also, the front second protruding surface 1114 protrudes more toward the frame 21 than the first front protruding surface 1113 .

Taken together, the front inclined surface 1111, the front bottom surface 1112, the front first protruding surface 1113, and the front second protruding surface 1114 are the permanent magnets at the end of the branch gap 40. (12) and the coil 22 are formed sequentially in the direction in which they are located, and are formed in an upward cascade as a whole. As a result, the front inclined portion 111 is formed so that the liquid flowing into the branch gap 40 can more easily flow into the permanent magnet 12 and the coil 22 .

The magnet seating portion 112 is formed in a continuous form with one end of the front inclined portion 111 . In other words, the magnet mounting portion 112 is formed in a continuous form with the front second protruding surface 1114 . The magnet seating portion 112 is formed in a straight line in the same direction as the flow of the fluid so that the permanent magnet 12 can be seated.

The rear inclined portion 113 is formed at the rear of the rim 11 . The rear inclined portion 113 is formed symmetrically with the front inclined portion 111 based on the center of the permanent magnet 12 as a whole. The rear inclined portion 113 is in contact with the bearing 31 as well, and the fluid introduced into the permanent magnet 12 and the coil 22 can escape.

More specifically, the rear inclined portion 113 includes a rear inclined surface 1131, a rear bottom surface 1132, a rear first protruding surface 1133 and a rear second protruding surface 1134.

First, the rear second protruding surface 1134 is formed to be continuous with the end of the magnet mounting portion 112 . The rear second protruding surface 1134 has the same height and length as the front second protruding surface 1114 .

The rear first protruding surface 1133 is formed to be continuous with the end of the rear second protruding surface 1134. The rear first protruding surface 1133 is formed at the same height as the front first protruding surface 1113 . However, the rear first protruding surface 1133 is formed to have a longer length than the front first protruding surface 1113 . Accordingly, there is an effect that the liquid flowing into the permanent magnet 12 and the coil 22 can slowly escape.

The rear bottom surface 1132 is formed to be continuous with the end of the rear first protruding surface 1133. The rear bottom surface 1132 has the same height and length as the front bottom surface 1112 .

The rear inclined surface 1131 is formed in a continuous form with the end of the rear bottom surface 1132 . The rear inclined surface 1131 is formed with the same inclination and length as the front inclined surface 1111 .

Taken together, the rear inclined surface 1131, the rear bottom surface 1132, the rear first protruding surface 1133, and the rear second protruding surface 1134 form the branch gap 40 at the end of the magnet seat 112. ) is formed sequentially in the direction in which it is located, and is formed in a downward cascade as a whole. As a result, the rear inclined portion 113 is formed so that the liquid cooling the permanent magnet 12 and the coil 22 can be discharged back to the branch gap 40 .

As a result, the front inclined part 111, the magnet mounting part 112, and the rear inclined part 113 prevent the liquid introduced into the branch gap 40 located at the front from the permanent magnet 12 and the coil 22. ) is formed so that it can be discharged again to the branch gap 40 located at the rear after cooling.

In addition, the support plate 30 further includes a bearing support part 301 and a frame support part 302 .

The bearing support part 301 protrudes from one side of the support plate 30 in a direction where the coil 22 is positioned so as to be coupled with the bearing 31 . The bearing support part 301 allows the bearing 31 to come into contact with the front bottom surface 1112 and the rear bottom surface 1132 respectively in a state of being coupled with the bearing 31 . In other words, the bearing support part 301 may protrude with a length such that the bearing 31 can contact the front bottom surface 1112 and the rear bottom surface 1132, respectively.

The frame support part 302 protrudes from one side of the support plate 30 in the direction where the coil 22 is located so as to support the lower end of the frame 21 .

As such, it will be understood that the technical configuration of the present invention described above can be implemented in other specific forms without changing the technical spirit or essential features of the present invention by those skilled in the art to which the present invention belongs.

Therefore, the embodiments described above should be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and the meaning and scope of the claims and their All changes or modified forms derived from equivalent concepts should be construed as being included in the scope of the present invention.

A: Drain pipe
B: fluid passage
1: Rim driven small hydro power generator
10: rotor
11 : Rim
111: front slope
1111: front slope
1112: front bottom surface
1113: front first protruding surface
1114: front second protruding surface
112: magnet seating part
113: rear inclined portion
1131: rear slope
1132: rear bottom surface
1133: rear first protruding surface
1134: rear second protruding surface
12: permanent magnet
13 : Blade
20: stator
21: frame
22: Coil
23: socket
30: support plate
301: bearing support
302: frame support
31: bearing
40: branch gap

Claims (5)

A rotor including a rim formed in a ring shape, a permanent magnet is provided on an outer circumferential surface of the rim, and a blade is provided on an inner circumferential surface of the rim to generate rotational motion through fluid flowing in a drain pipe;
A stator including a frame formed to have a diameter larger than that of the rotor, and provided with a coil inside the frame corresponding to the permanent magnet to generate electric energy according to rotation of the rotor; and
A support plate connected to the drain pipe while supporting the front and rear sides of the stator and the rotor,
A branch gap is formed between both the front and rear ends of the rim and the support plate, respectively,
The rim is
a front inclined portion formed in a forward direction through which the fluid is introduced from the rim;
a magnet seating portion connected to one end of the front inclined portion so that the permanent magnet is seated thereon; and
Doedoe connected to one end of the magnet mounting portion, including a rear inclined portion formed in the rear through which the fluid is discharged from the rim,
Some of the liquid flowing in the drain pipe flows into the front inclined portion through the branch gap, passes through the magnet seating portion, and then exits the drain pipe through the rear inclined portion, thereby cooling the permanent magnet and the coil. A rim driven small hydro generator, characterized in that.
delete According to claim 1,
The permanent magnet and coil,
A rim-driven small hydro power generator, characterized in that it is molded with an epoxy-based material to prevent corrosion due to the fluid.
According to claim 1,
The support plate,
It is provided on one side of the support plate and includes a plurality of bearings in contact with the outer circumferential surface of the rim,
The rim driven small hydro power generator according to claim 1 , wherein the rim is closely supported by the bearing, so that the rotor can maintain a free rotation state.
According to claim 1,
The blades are provided in plurality,
A rim driven small hydro power generator, characterized in that formed by protruding from the inner circumferential surface of the rotor toward the center of rotation of the rotor.

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