KR20180060462A - revolving field magnet type generator - Google Patents

Abstract

The present invention relates to a rotating-type power generator, and more particularly, to a rotating-type power generator according to the present invention, which comprises a housing having a terminal terminal, a stator fixed inside the housing and connected to the terminal, and a plurality of permanent magnet units Wherein the permanent magnet unit comprises a rotor installed to have a constant inclination angle with respect to the rotational direction of the central shaft, a rotor mount fixed to the rim, coupled to the rear of the housing through bearing means, And a rotating shaft coupled to a center of the rotor mount, wherein air flowing through a fan formed in the rotor mount is moved through a spacing space between the permanent magnets and discharged through a discharge port formed in a front surface of the housing. do.

Description

[0001] The present invention relates to a revolving field magnet type generator,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a power generation device, and more particularly, to a power generating device that can remove ripple noise and improve cooling performance.

The alternator is a device for generating electric power by rotating the rotor, such as a small ship, a small wind turbine generator, etc., and is divided into a rotary type and a rotary type. The rotary type is a type in which a conductor is stopped and a magnetic field is rotated. It is the opposite.

1 is an internal configuration diagram of a conventional rotary type AC generator.

As shown in FIG. 1, inside the pair of brackets 10 and 11, which are hermetically closed in the front and rear and have inlet and outlet 11a (10a) through which air is sucked and exhausted, a rotor 21 ).

And an excitation coil 22 fixed to the bracket 11 is installed inside the rotor 21. [ The rotary shaft 20 is pivoted by a pair of bearings 30 and 31 at the front and rear sides thereof. A stator 40 is fixed to the inner peripheral surface of the brackets 10 and 11. A ring 41 is provided on the rotor 21 as a non-magnetic body as shown in FIG.

A cooling fan 50 and a pulley 60 are installed at one end of the rotating shaft 20 protruding outward of the bracket 10 so as to rotate together with the rotating shaft 20.

The pulley 60 is connected to the engine of the vehicle or the ship by a belt or the like.

A rectifier (70) and a voltage regulator (80) are provided on the lower side and the upper side of the rear bearing (31).

Hereinafter, the operation of the conventional AC generator constructed as described above will be described.

That is, when the alternator is driven and the rotary shaft 20 rotates, the fan 50 provided at one end of the rotary shaft 20 rotates integrally to suck and exhaust air outside, The internal heat is cooled. More specifically, by the suction force generated by the rotation of the fan 50 together with the rotary shaft 20, external air flows toward the inlet 11a side of the rear bracket 11 And is cooled by the stator 40 and the rotor 21 and then exhausted through the outlet 10a of the front bracket 10 and is generated when the alternator is driven by external air The internal heat is cooled.

However, such a structure has a problem that the cooling performance is poor because the flow can not be smoothly performed inside the rotating generator.

Such prior art includes Application No. 10-1995-017835 filed by the Korean Intellectual Property Office (filed on June 26, 1995).

In recent years, harmonics are inevitably generated due to slot openings where the coils are wound around the stator and the pitch of the permanent magnets provided on the rotor, and ripple noise due to such harmonics is removed A technique has been proposed in which the arrangement of the permanent magnets is shifted at a constant pitch interval and adjusted.

These prior arts include Registration No. 10-1104346 (registered on January 01, 2012) registered in the Korean Intellectual Property Office.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rotary-type power generator capable of removing ripple noise while improving cooling performance.

The permanent magnet unit includes a plurality of permanent magnet units that are spaced apart from each other by a predetermined distance. The permanent magnet unit includes permanent magnets, and the permanent magnets are connected to the terminal terminals. The rotor assembly includes a rotor mounted to an edge of the rotor and coupled to a rear portion of the housing through bearing means, and a rotary shaft coupled to a center of the rotor mount. The air flowing through the fan formed in the rotor mount is moved through the spacing space between the permanent magnets and discharged through a discharge port formed on the front surface of the housing.

Here, the permanent magnet unit is characterized in that a plurality of permanent magnets are arranged stepwise in the width direction.

The rotor type generator according to the present invention can reduce the ripple noise significantly by using a rotor installed so that the permanent magnet unit has a constant inclination angle with respect to the rotation direction of the central axis, It is advantageous that the generator can be cooled while being moved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an internal configuration diagram of a conventional rotary type AC generator. FIG.
2 is an exploded perspective view showing a rotary-type power generator according to a preferred embodiment of the present invention.
Fig. 3 is a conceptual diagram illustrating air flow in Fig. 2; Fig.
4 is a cross-sectional view illustrating a rotary-type power generator according to a preferred embodiment of the present invention.
5 is a partial perspective view showing a rotor according to a preferred embodiment of the present invention;

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings.

However, the present invention is not limited to the embodiments described herein but may be embodied in other forms.

Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In the drawings, the thicknesses of layers and regions are exaggerated for clarity.

Terms such as top, bottom, top, bottom, or top, bottom, etc. are used to distinguish relative positions in components.

For example, in the case of naming the upper part of the drawing as upper part and the lower part as lower part in the drawings for convenience, the upper part may be named lower part and the lower part may be named upper part without departing from the scope of right of the present invention .

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be construed as ideal or overly formal in meaning unless explicitly defined in the present application Do not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is an exploded perspective view showing a rotary-type power generator according to a preferred embodiment of the present invention.

As shown in FIG. 2, the rotary generator of the present invention includes a housing 10, a stator 20, a rotor 30, a rotor mount 40, and a rotary shaft 50.

First, the housing 10 is provided with a terminal terminal 12, and a stator 20 to which a terminal terminal 12 is connected is fixed. A plurality of outlets 14 through which air can be discharged are radially arranged on the front surface of the housing 10.

Next, the rotor 30 is formed in a ring shape, and a plurality of permanent magnet units 32 are installed on the inner circumferential surface of the ring to form a constant spacing space 34.

The rotor 30 is fixed to an edge of the rotor mount 40 and the permanent magnet unit 32 is installed to have a predetermined inclination angle a with respect to the rotation direction of the center shaft 50.

Here, the rotor mount 40 is fixed to the center of the rotary shaft 50, which is rotated through an energy source such as wind power or water power, which is an external power source, and is coupled to the rear of the housing 10 through bearing means.

A fan 42 is installed in the rotor mount 40 to transfer the air introduced through the inlet 41. The fan 42 may be rotated through a separate power source, And a plurality of blades are installed on the rotor mount 40 fixed to the rotary shaft 50 to introduce outside air.

Referring to the internal air flow, FIG. 3 is a conceptual diagram illustrating the air flow in FIG.

The rotation of the rotor mount 40 causes the fan 42 installed in the rotor mount 40 to rotate in the same direction so that the external air flows into the outer side and the introduced air is separated from the permanent magnet units 32 of the rotor 30 And is discharged to the outside through a discharge port (14) formed on the front surface of the housing (10).

FIG. 4 is a cross-sectional view illustrating a rotating-type power generator according to a preferred embodiment of the present invention. Referring to FIG.

4, the air introduced through the inlet 41 formed in the rotor mount 40 is moved to the outer side through the rotation of the fan 42, and the moved air passes through the rotor 20 and the stator 20, As well as the spacing space between the permanent magnet units.

In particular, since the spacing space is inclined at an angle corresponding to the rotation direction of the rotary shaft 50 as described above, the flow of air forwarded while being rotated by the fan is smooth, .

That is, since the air is moved through the spacing space having the inclination angle between the permanent magnet units in the process of being discharged forward through the fan, the power generation efficiency due to the air resistance is prevented from being reduced.

The transferred air is discharged to the outside through the discharge port (14) of the housing (10).

The permanent magnet unit may be manufactured by twisting a single permanent magnet with respect to the inner circumferential surface of the rotor, but may be formed by inclining a plurality of small permanent magnets to form an inclined shape.

5 is a partial perspective view showing a rotor according to a preferred embodiment of the present invention.

As shown in FIG. 5, the small permanent magnets 32a are arranged stepwise in the width direction so as to be inclined at a constant angle (a) with respect to the rotation axis as a whole.

Since the arrangement of the permanent magnets has been proposed in the prior art for eliminating the conventional harmonic ripple, a detailed description will be omitted.

However, the small permanent magnets 32a are provided so as to have a certain angle with respect to the center direction of the rotary shaft through a certain angle.

And can be designed to be fixed to the rotor by using a separate fastener provided with the permanent magnet 32a.

 And is discharged through a discharge port formed on the front surface of the housing.

As described above, according to the present invention, it is a principal technical idea to provide a generator of a rotary type generator, and since the above-described embodiments are only one embodiment with reference to the drawings, the true scope of the present invention is determined by the claims .

10: Housing
12: Terminal terminal
14: Outlet
20:
30: Rotor
32: permanent magnet unit
34: Spacing space
40: Rotor mount
41: inlet
42: Fans
50:

Claims (2)

A housing having a terminal terminal;
A stator fixed to the inside of the housing and connected to the terminal terminal;
A plurality of permanent magnet units are installed on the inner circumferential surface so as to form a constant spacing space, the permanent magnet unit having a constant inclination angle with respect to the rotational direction of the center shaft;
A rotor mounted on an edge of the rotor and coupled to the rear of the housing through bearing means;
And a rotating shaft coupled to the rotor mount center,
Wherein the air flowing through the fan formed in the rotor mount is moved through the spacing space between the permanent magnets and discharged through a discharge port formed on the front surface of the housing.
The method according to claim 1,
The permanent magnet unit includes:
And a plurality of permanent magnets are arranged in a stepwise manner in the width direction.

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