CN222674007U

CN222674007U - AC generator

Info

Publication number: CN222674007U
Application number: CN202421251272.4U
Authority: CN
Inventors: 张渭; 郑荣华
Original assignee: Taizhou Mingya Electromechanical Co ltd
Current assignee: Taizhou Mingya Electromechanical Co ltd
Priority date: 2024-06-04
Filing date: 2024-06-04
Publication date: 2025-03-25
Anticipated expiration: 2034-06-04

Abstract

The utility model provides an AC generator, belonging to the field of electromechanical technology. It solves the problem of low efficiency of the generator in the prior art. The utility model includes a casing, a front cover and a rear cover, a stator core and a rotor are fixedly installed inside the casing, a stator winding is fixedly wound on the stator core, the rotor is installed inside the stator core, the rotor includes a first rotor core, a second rotor core and a rotor coil, the first rotor core and the second rotor core are placed oppositely, a plurality of first pole claws and a plurality of second pole claws are formed on the first rotor core and the second rotor core respectively, the first pole claws and the second pole claws are arranged alternately, a placement cavity is formed in the middle of the first rotor core and the second rotor core, the rotor coil is fixedly installed in the placement cavity, and the length of the first pole claw and the second pole claw is the same as that of the rotor coil. The utility model has the advantage of high working efficiency.

Description

AC generator

Technical Field

The utility model belongs to the technical field of electromechanics and relates to an alternating current generator.

Background

A generator set refers to a power generation device that is capable of converting mechanical or other renewable energy sources into electrical energy. The magnetic circuit and the circuit which mutually perform electromagnetic induction are formed by proper magnetic conduction and electric conduction materials so as to generate electromagnetic power and achieve the purpose of energy conversion.

Chinese patent publication No. CN211557026U discloses an alternator including a rotor shaft having an output end, a bearing having an inner race and an outer race, the output end of the rotor shaft rotatably supported within the inner race of the bearing, a mating ring sleeved on the outer race of the bearing, an end cover defining an axially extending through hole within which the mating ring fits and the output end of the rotor shaft extends out of the through hole, a shield mounted to the end cover to cover the through hole, wherein the shield has a circular body, a first projection extending radially outward from the body, and a second projection projecting axially outward from an outer surface of the body and extending radially outward beyond the first projection, the end cover defining a radially inward extending flange at an outer edge of the through hole, the end cover defining a notch in the flange and defining a groove in the flange that communicates with the notch, the first projection being received within the groove, the second projection being received in the notch and abutting axially against a bottom wall of the notch.

As can be seen from the description and drawings provided by this patent, in an alternator provided by this patent, the area of the core and armature in the rotor is not large enough, and the power generation efficiency is limited.

Disclosure of utility model

The object of the present utility model is to solve the above-mentioned problems occurring in the prior art and to provide an alternator.

The alternating current generator comprises a shell, a front end cover and a rear end cover, wherein a stator core and a rotor are fixedly arranged in the shell, a stator winding is fixedly wound on the stator core, the rotor is arranged in the stator core, the rotor comprises a first rotor core, a second rotor core and a rotor coil, the first rotor core and the second rotor core are oppositely arranged, a plurality of first pole claws and a plurality of second pole claws are respectively formed on the first rotor core and the second rotor core, the first pole claws and the second pole claws are alternately arranged, a placing cavity is formed in the middle of the first rotor core and the second rotor core, the rotor coil is fixedly arranged in the placing cavity, and the lengths of the first pole claws and the second pole claws are the same as that of the rotor coil.

In the above-mentioned ac generator, a through hole is formed in the first rotor core, and a single wire extends from the front end of the rotor coil, and passes through the through hole.

In the above-mentioned ac generator, a generator shaft is provided inside the rotor coil, and the generator shaft extends out of the front end cover and the rear end cover, respectively.

In the above-mentioned ac generator, a yoke is integrally formed inside the first rotor core, and the yoke is in a ring column shape.

In the alternator, a bearing is sleeved on the generator shaft, a damping spring is fixed on the bearing, and one end of the damping spring is connected with the inner wall of the front end cover.

Compared with the prior art, the alternating current generator has the advantages that 1, through the structural arrangement of the first rotor iron core and the second rotor iron core, the first pole claws and the second pole claws are alternately arranged, the lengths of the first pole claws and the second pole claws are the same as that of the rotor coils, the magnetic field density formed between the rotor coils and the first rotor iron core and between the rotor coils and the second rotor iron core during operation is increased, the power generation efficiency is improved, and 2, the magnetic field density between the first rotor iron core and the rotor coils is further improved through the arrangement of the magnetic yoke in the first rotor iron core.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of an explosive structure of the present utility model;

FIG. 3 is a schematic view of a rotor construction;

Fig. 4 is a schematic view of a first rotor core structure.

1, A machine shell, 2, a front end cover, 3, a rear end cover, 4, a stator core, 41, a stator winding, 5, a rotor, 51, a first rotor core, 511, a first pole claw, 512, a through hole, 513, a magnetic yoke, 52, a second rotor core, 521, a second pole claw, 53, a rotor coil, 531, a single wire, 54, a placing cavity, 6, a generator shaft, 61, a bearing, 7 and a damping spring.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1 to 4, the present embodiment includes a casing 1, a front end cover 2 and a rear end cover 3, the front end cover 2 and the rear end cover 3 are respectively and fixedly mounted on the front side and the rear side of the casing 1, a stator core 4 and a rotor are fixedly mounted in the casing 1, a stator winding 41 is wound and fixed on the stator core 4, a rotor 5 is mounted in the stator core 4, a first rotor core 51 and a second rotor core 52 are oppositely disposed, a plurality of strip-shaped first pole claws 511 and second pole claws 521 are respectively formed on the first rotor core 51 and the second rotor core 52, the first pole claws 511 and the second pole claws 521 are alternately arranged during assembly, a placement cavity 54 is formed in the middle of the first rotor core 51 and the second rotor core 52, a rotor coil 53 is fixedly mounted in the placement cavity 54, the lengths of the first pole claws 511 and the second pole claws 521 are the same as the rotor coil 53, the inner walls of the first pole claws 511 and the second pole claws 521 are close to the outer walls of the rotor coil 53, a motor shaft 6 is arranged in the rotor coil 53 in a penetrating manner, and the motor shaft 6 and the first rotor core 51 and the second rotor core 52 are fixedly arranged on the motor shaft 52 and the rotor core 52 and the first rotor core and the second rotor core 52 are driven to rotate when the first rotor core and the second rotor core 52 and the first rotor core and the second rotor core 52 are fixedly arranged.

Further, as shown in fig. 1 to 4, the first rotor core 51 is provided with two through holes 512, and a single wire 531 is extended from the front end of the rotor coil 53, and the single wire 531 passes through the through holes 51 and is close to the outer surface of the generator shaft 6.

Further, as shown in fig. 1 to 4, the yoke 513 is integrally formed in the first rotor core 51, and the yoke 513 is formed in a ring-column shape, and the yoke 513 of this structure increases the surface area of the first rotor core 51 and increases the magnetic field density between the first rotor core 51 and the rotor coil 53 during operation.

Further, as shown in fig. 2, a bearing 61 is sleeved on the generator shaft 6 located inside the front end cover 2, a damper spring 7 is fixed on the bearing 61, one end of the damper spring 7 is connected with the inner wall of the front end cover 2, and the damper spring 7 plays a role in protecting the bearing 61.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although various terms are used more herein, the use of other terms is not precluded. These terms are only used to more conveniently describe and explain the nature of the utility model and should be construed in a manner consistent with their spirit and scope.

Claims

1. An AC generator, comprising a housing (1), a front cover (2) and a rear cover (3), wherein a stator core (4) and a rotor (5) are fixedly mounted inside the housing (1), a stator winding (41) is fixedly wound on the stator core (4), and the rotor (5) is mounted inside the stator core (4), characterized in that: the rotor (5) comprises a first rotor core (51), a second rotor core (52) and a rotor coil (53), and the first rotor core (51) and the second rotor core (52) are disposed opposite to each other. The first rotor iron core (51) and the second rotor iron core (52) are respectively formed with a plurality of first pole claws (511) and a plurality of second pole claws (521); the first pole claws (511) and the second pole claws (521) are arranged alternately; a placement cavity (54) is formed in the middle of the first rotor iron core (51) and the second rotor iron core (52); the rotor coil (53) is fixedly mounted in the placement cavity (54); and the length of the first pole claw (511) and the second pole claw (521) is the same as that of the rotor coil (53).

2. An AC generator according to claim 1, characterized in that: a through hole (512) is opened on the first rotor core (51), a single wire (531) extends from the front end of the rotor coil (53), and the single wire (531) passes through the through hole (512).

3. An AC generator according to claim 1, characterized in that a generator shaft (6) is passed through the rotor coil (53), and the generator shaft (6) extends out of the front cover (2) and the rear cover (3) respectively.

4. An AC generator according to claim 1, characterized in that a yoke (513) is integrally formed inside the first rotor core (51), and the yoke (513) is in the shape of a ring cylinder.

5. An AC generator according to claim 3, characterized in that: a bearing (61) is sleeved on the generator shaft (6), a shock-absorbing spring (7) is fixed on the bearing (61), and one end of the shock-absorbing spring (7) is connected to the inner wall of the front end cover (2).