CN216649344U

CN216649344U - Direct current generator

Info

Publication number: CN216649344U
Application number: CN202220116322.2U
Authority: CN
Inventors: 孙鲁平
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-17
Filing date: 2022-01-17
Publication date: 2022-05-31
Anticipated expiration: 2032-01-17

Abstract

The utility model discloses a direct current generator, which belongs to the technical field of generators and comprises a stator, a rotor and a rotating shaft, wherein the rotor and the rotating shaft are arranged in the stator, the rotor comprises a carrier made of a non-magnetic material, a plurality of windings and rotor permanent magnet groups, the windings and the rotor permanent magnet groups are circumferentially arranged on the carrier at intervals, the rotor permanent magnet groups comprise two rotor permanent magnets, and magnetic poles with opposite polarities of the two rotor permanent magnets are oppositely arranged; the stator is located rotor axial both sides are provided with two opposite polarity's stator permanent magnet respectively, and the rotor is at the in-process of stator magnetic field internal rotation, and the induced field direction that the magnetic field of rotor permanent magnet and winding produced is opposite, because induced field hinders the rotation of rotor, and the magnetic field that the rotor permanent magnet produced can play the effect of helping the rotor to rotate to improve the efficiency of generator.

Description

Direct current generator

Technical Field

The utility model belongs to the technical field of generators, and particularly relates to a direct-current generator.

Background

The working principle of the traditional permanent magnet direct current generator is that alternating electromotive force induced and generated in an armature coil is changed into direct current electromotive force when being led out from the end of an electric brush by matching the reversing action of the electric brush by a commutator; the structure is that the permanent magnet and the stator winding along the axial direction are both in a single structure form. At present, permanent magnet direct current generator products are serialized, and the development direction is more convenient to use, energy-saving, safe and reliable. Based on the design, the generator with higher generating efficiency is designed to meet the requirement of industry and agriculture production which is increasingly prosperous at present.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the direct current generator is provided, and the permanent magnet is utilized to assist the rotor to rotate, so that the generating efficiency of the generator is improved.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

a direct current generator comprises a stator, a rotor and a rotating shaft, wherein the rotor and the rotating shaft are installed in the stator, the rotor comprises a carrier made of a non-magnetic material, a plurality of windings and rotor permanent magnet groups, the windings and the rotor permanent magnet groups are circumferentially arranged on the carrier at intervals, each rotor permanent magnet group consists of two rotor permanent magnets, and magnetic poles of the two rotor permanent magnets with opposite polarities are oppositely arranged; two stator permanent magnets with opposite polarities are respectively arranged on two sides of the stator in the axial direction of the rotor.

Further, the windings and the rotor permanent magnet groups are closely arranged.

Further, the rotor permanent magnet is of a fan-shaped structure.

Further, the winding is wound on the carrier along a radial direction of the carrier.

Further, the stator still includes the casing, the pivot axial install in the carrier, the both ends of pivot rotate respectively install in the casing is provided with on the lateral wall of stator permanent magnet.

Furthermore, a plurality of windings are connected in series.

Furthermore, 4 windings and 4 rotor permanent magnet groups are arranged respectively.

After the technical scheme is adopted, the utility model has the beneficial effects that:

the direct current generator comprises a stator, a rotor and a rotating shaft, wherein the rotor and the rotating shaft are arranged in the stator, the rotor comprises a carrier made of a non-magnetic material, and a plurality of windings and rotor permanent magnet groups, the windings and the rotor permanent magnet groups are circumferentially arranged on the carrier at intervals, the rotor permanent magnet groups are composed of two rotor permanent magnets, and magnetic poles of the two rotor permanent magnets with opposite polarities are oppositely arranged; the stator is located the axial both sides of rotor and is provided with two opposite polarity's stator permanent magnet respectively, and the rotor is at the in-process of stator magnetic field internal rotation, and the induction field opposite direction that the magnetic field of rotor permanent magnet and winding produced, because induction field hinders the rotation of rotor, consequently, the magnetic field that the rotor permanent magnet produced can play the effect of helping the rotor pivoted to improve the efficiency of generator.

Drawings

FIG. 1 is a partial schematic view of the front side construction of a DC generator of the present invention in operation;

FIG. 2 is a partial schematic view of the side structure of the DC generator of the present invention in operation;

FIG. 3 is a magnetic flux distribution diagram of a rotor permanent magnet when not in operation;

FIG. 4 is a magnetic field line distribution diagram when two magnets are in the same pole;

in the figure, 1-shell, 2-stator permanent magnet, 3-rotating shaft, 4-carrier, 5-rotor permanent magnet and 6-winding.

Detailed Description

The utility model is further illustrated with reference to the following figures and examples.

All directions referred to in the present specification are based on the drawings, and represent relative positional relationships only, and do not represent absolute positional relationships.

As shown in fig. 1 and 2, a dc generator includes a stator, a rotor and a rotating shaft 3 installed in the stator, the rotor includes a carrier 4 made of a non-magnetic material, a plurality of windings 6 and rotor permanent magnet 5 groups, the windings 6 and the rotor permanent magnet 5 groups are circumferentially arranged on the carrier 4 at intervals, the rotor permanent magnet 5 groups are composed of two rotor permanent magnets 5, and the magnetic poles of the two rotor permanent magnets 5 with opposite polarities are oppositely arranged. Two stator permanent magnets 2 with opposite polarities are respectively arranged on two sides of the stator in the axial direction of the rotor.

As shown in fig. 1, the windings 6 and the rotor permanent magnets 5 on the rotor are closely arranged, and the rotor permanent magnets 5 forming the rotor permanent magnet 5 are in a fan-shaped structure. The winding 6 is wound on the carrier 4 along the radial direction of the carrier 4, and a plurality of windings 6 are connected in series, so that stable direct current can be obtained. The winding manner of the winding 6 is prior art and is not an improvement point of the present application, and thus is not particularly limited.

As shown in fig. 2, the stator further includes a housing 1, a rotating shaft 3 is axially mounted on the carrier 4, and two ends of the rotating shaft 3 are respectively rotatably mounted on the side wall of the housing 1 where the stator permanent magnet 2 is disposed.

As shown in fig. 4, when the two magnets have the same poles, the same poles of the two magnets repel each other, the magnetic lines of force of the left magnet can only be on the left side, and the magnetic lines of force of the right magnet can only be on the right side, so that the magnetic lines of force of the rotor permanent magnet 5 in fig. 2 are influenced by the induced magnetic field generated by the winding 6 and can only diverge to the left or to the right.

As shown in fig. 1 and fig. 2, when the generator works, a uniform clockwise moment is applied to the rotor to overcome the resistance between the rotor and the generator, and after the rotor rotates, each winding 6 cuts magnetic lines of force to generate induced electromotive force respectively. According to the right-hand rule, induced current with an outward direction is generated in the winding 6, according to the right-hand spiral rule, the direction of the magnetic line of the induced magnetic field above the rotor is from the right side to the left side, the movement of the rotor is hindered by the acting force generated by the stator magnetic field, and due to the action of the magnetic line of the induced magnetic field above the rotor, the direction of the magnetic line of the rotor permanent magnet 5 is opposite to that of the magnetic line of the induced magnetic field above the rotor, and the acting force generated by the stator magnetic field plays a role in assisting the rotation of the rotor. Similarly, the magnetic line of force direction of rotor below induction field is from the left side to the right side, hinders the motion of rotor with the effort that stator magnetic field produced, because the effect of rotor below induction field magnetic line of force, makes the whole right side of following of rotor permanent magnet 5 magnetic line of force direction to the left side, and is opposite with the magnetic line of force direction of rotor below induction field, and the effort that produces with stator magnetic field has also played the effect that assists the rotor pivoted. Therefore, the purpose of generating power can be achieved only by applying smaller torque. When the magnetic field intensity of the induction magnetic field is equal to the magnetic field intensity of the rotor permanent magnet 5, the power generation efficiency of the corresponding generator is the highest, and the rotating speed of the generator is the optimal rotating speed.

As shown in fig. 3, when the generator does not operate, the magnetic field of the rotor permanent magnet 5 is automatically distributed to both sides (multiple sides) in the uniform magnetic field of the circular stator permanent magnet 2, no current exists in the winding 6, no induced magnetic field exists, and a part of the external magnetic field of the rotor permanent magnet 5 can pass through the winding 6 to form a loop. At this time, the forces received by the rotor are also balanced.

The direct current generator is characterized in that a plurality of windings and rotor permanent magnet groups are circumferentially arranged on a carrier made of a non-magnetic material at intervals, each rotor permanent magnet group consists of two rotor permanent magnets, magnetic poles with opposite polarities of the two rotor permanent magnets are oppositely arranged, and in the process that the rotors rotate in a stator magnetic field, the magnetic field induced by the rotor permanent magnets has the same external magnetic field direction, so that the magnetic field generated by the rotor permanent magnets can play a role in assisting the rotation of the rotors, and the power generation efficiency of the generator is improved.

While specific embodiments of the utility model have been described above, it will be understood by those skilled in the art that the described embodiments are only some, and not all, of the present invention, which is presented by way of example only, and the scope of the utility model is defined by the appended claims. Various changes or modifications to these embodiments may be made by those skilled in the art without departing from the principle and spirit of the utility model, and these changes and modifications all fall within the scope of the utility model.

Claims

1. A direct current generator comprises a stator, a rotor and a rotating shaft, wherein the rotor and the rotating shaft are arranged in the stator, and the direct current generator is characterized in that the rotor comprises a carrier made of a non-magnetic material, a plurality of windings and rotor permanent magnet groups, the windings and the rotor permanent magnet groups are circumferentially arranged on the carrier at intervals, each rotor permanent magnet group consists of two rotor permanent magnets, and magnetic poles of the two rotor permanent magnets with opposite polarities are oppositely arranged;

two stator permanent magnets with opposite polarities are respectively arranged on two sides of the stator in the axial direction of the rotor.

2. The direct current generator of claim 1, wherein the windings and the rotor permanent magnet groups are closely arranged.

3. The direct current generator of claim 2, wherein the rotor permanent magnets are of a fan-shaped configuration.

4. A direct current generator according to claim 3, wherein the windings are wound on the carrier in a radial direction of the carrier.

5. The direct current generator of claim 1, wherein the stator further comprises a housing, the shaft is axially mounted on the carrier, and two ends of the shaft are respectively rotatably mounted on the side wall of the housing where the stator permanent magnet is disposed.

6. The direct current generator of claim 1, wherein a plurality of said windings are connected in series.

7. The direct current generator according to any one of claims 1 to 6, wherein there are 4 windings and 4 rotor permanent magnet groups, respectively.