Novel motor

Abstract

The utility model discloses a novel motor, which comprises a base, a space for accommodating a stator core and a rotor core is arranged in the base, a plurality of axially arranged stator teeth are arranged on the inner ring of the stator core, and the rotor core is detachably mounted in the internal space of the stator core. Rotating shafts are embedded in the two sides of the center of the rotor core, cooling fans are installed on the two sides of the rotor core, permanent magnet grooves are formed in the end face of the rotor core, permanent magnets are installed in the permanent magnet grooves, a junction box is fixedly arranged on the machine base, and an end cover is detachably arranged on the side, where the rotor core is installed, of the machine base. Two sides of the base are sealed by a housing, the permanent magnet grooves are arranged in a radial or U-shaped mixed structure, the rotor core is also provided with a magnetic isolation empty groove, the magnetic isolation empty groove is filled with a magnetic isolation material, and the magnetic isolation material is an aluminum matrix composite material.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and particularly relates to a new type of motor. Background Art

[0002] In the prior art, an electro-excited generator can only operate at a constant speed. When the speed changes greatly, the AVR of the electro-excited generator will desperately increase the excitation current, and to a certain extent, the excitation coil will be burned out. In the prior art, the rotor excitation winding of the electro-excited generator is a concentrated winding, which is the main heat source. It must be cooled by the outside air entering the generator interior, and it cannot be used in humid environments such as the ocean. Therefore, the output power of the generator is small under the same volume, and the generator volume is relatively large.

[0003] In view of the above factors, a new type of motor is specially designed, which does not require excitation windings and related components such as brushes and slip rings. The new structure is relatively simple, which helps to reduce the possibility of mechanical failures and maintenance costs. Content of the Utility Model

[0004] The purpose of the utility model is to provide a new type of motor to solve the problems raised in the above background art.

[0005] The purpose of the utility model is realized by the following technical solutions: a new type of motor, including a machine base, a space for accommodating a stator core and a rotor core is arranged inside the machine base, a plurality of axially arranged stator teeth are arranged on the inner circle of the stator core, and the rotor core is detachably installed inside the inner space of the stator core;

[0006] A rotating shaft is embedded in the center of the rotor core, and a cooling fan is installed on one side or both sides of the rotor core. A permanent magnet slot is opened along the end face of the rotor core, and a permanent magnet is installed in the permanent magnet slot;

[0007] A junction box is fixedly arranged on the machine base. One side of the machine base along the installation of the rotor core is provided with an end cover in a detachable manner, and both sides of the machine base are closed by a housing.

[0008] Further, the permanent magnet slot is arranged in a radial or U-shaped hybrid structure.

[0009] Further, a magnetic isolation empty slot is also opened on the rotor core, and a magnetic isolation material is filled in the magnetic isolation empty slot. The magnetic isolation material is an aluminum-based composite material.

[0010] Further, stator windings are arranged on a plurality of the stator cores, and the stator windings are arranged on the stator teeth of the stator core in a cross-ring array manner.

[0011] Furthermore, auxiliary magnetic pole slots are provided on the rotor core, and auxiliary magnetic poles are embedded in the auxiliary magnetic pole slots. The auxiliary magnetic poles are made of silicon steel structure.

[0012] Furthermore, the rotating shaft is connected to the end cover of the machine base through bearings.

[0013] Furthermore, the stator core is arranged in a structure of 4 pairs of poles and 24 slots.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] In the generator of the present utility model, a permanent magnet (rare earth permanent magnet material) is embedded in the rotor core to generate the main magnetic field of the generator, eliminating the excitation winding and the excitation control system, and no longer requiring an external power supply for excitation. Therefore, the high-efficiency, environmentally friendly and energy-saving generator has an efficiency 10% higher than that of the electro-excited generator.

[0016] The generator of the present utility model has no excitation winding, eliminating the slip ring, carbon brush device and excitation control part. Therefore, the environmentally friendly and energy-saving generator has high reliability, a compact structure, small size and light weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view schematic diagram of the present utility model;

[0018] Figure 2 is the side view schematic diagram of the present utility model;

[0019] Figure 3 is the explosion schematic diagram of the present utility model;

[0020] Figure 4 is the cross-sectional schematic diagram of the present utility model;

[0021] Figure 5 is the schematic diagram of the cross-shaped ring winding of the stator core of the present utility model;

[0022] Figure 6 is the schematic diagram of the structure of the permanent magnet motor with embedded magnetic steel of the present utility model;

[0023] Figure 7 is the schematic diagram of the rotor core with magnetic isolation empty slots of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0027] As Figures 1-7 shown, a new type of motor includes a machine base 1. A space for accommodating a stator core 2 and a rotor core 3 is provided inside the machine base 1. A plurality of axially arranged stator teeth are provided on the inner circle of the stator core 2. The rotor core 3 is detachably installed inside the inner space of the stator core 2;

[0028] A rotating shaft 5 is embedded in the center of the rotor core 3, and a cooling fan 6 is installed on one side or both sides of the rotor core 3. A permanent magnet slot 7 is formed along the end face of the rotor core 3, and a permanent magnet is installed in the permanent magnet slot 7;

[0029] A junction box 4 is fixedly provided on the machine base 1. An end cover 8 is detachably provided on the machine base 1 along the side where the rotor core 3 is installed. Both sides of the machine base 1 are closed by a housing 9.

[0030] The rotating shaft 5 is connected to the end cover of the machine base 1 through a bearing.

[0031] The stator core 2 is arranged in a 4-pole 24-slot structure.

[0032] In the operating state, a large torque is generated with a high air-gap magnetic flux density. The permanent magnet slot 7 is arranged in a radial or U-shaped hybrid structure.

[0033] In order to prevent the permanent magnet magnetic flux from being short-circuited during operation, a magnetic isolation empty slot 10 is also formed on the rotor core 3, and a magnetic isolation material is filled in the magnetic isolation empty slot 10. The magnetic isolation material is an aluminum-based composite material.

[0034] A stator winding is arranged on a plurality of the stator cores 2, and the stator winding is arranged on the stator teeth of the stator core 2 in a cross-ring array manner.

[0035] In the above structure, an embedded installation method is selected for the rotor permanent magnet, which reduces the possibility of danger caused by demagnetization of the permanent magnet.

[0036] In order to facilitate the use of an embedded magnetic steel structure to improve the operating performance of the motor, an auxiliary pole slot 11 is formed on the rotor core 3, and an auxiliary pole is embedded in the auxiliary pole slot 11. The auxiliary pole 11 is made of silicon steel structure.

[0037] The generator rotor of the present utility model has no excitation coil and can be easily made into multiple poles, such as 100 poles. When the generator rotates at 60 revolutions per minute, it can generate electric energy of 400V 50HZ. It is almost impossible to make an electric excitation generator into 100 poles, and even if it is made, the cost is much higher than that of the environmentally friendly and energy-saving generator.

[0038] The generator rotor of the present utility model adopts a strong constant magnetic field, and the motor will not be burned out due to speed changes.

[0039] The generator of the present utility model does not require an excitation winding, and the rotor does not heat up. The generator only needs to cool the outer surface of the motor, and the cooling air only needs to blow the motor housing. In special occasions, it can also be easily made into a water-cooled type, etc.

[0040] The rotor of the generator of the present utility model has a permanent magnet strong magnetic field, so the motor can be easily operated as a motor and is particularly suitable as a test motor. When the device under test drives the motor to run, the motor can generate electric energy. At this time, the motor provides a load torque to the device under test, and the torque characteristics of the device under test can be detected; when the device under test needs to be rotated by other power, the motor acts as a motor to drive the device under test to run, and parameters such as the braking performance, coasting condition, moment of inertia, and back electromotive force of the device under test can be measured. When the motor operates as a motor, it has the characteristics of smooth and continuous stepless speed regulation, large starting torque, small starting current, high speed, and can use alternating current or direct current, etc.

[0041] The present utility model has high reliability and has no problems of vulnerability of the excitation winding, such as burning out and breaking of wires, as well as problems of wear of brushes and slip rings, making the operation of the new energy generator more reliable.

[0042] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0043] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A new type of electric motor, comprising a machine base (1), characterized in that: A space for accommodating a stator core (2) and a rotor core (3) is provided inside the machine base (1). A plurality of axially arranged stator teeth are provided on the inner circumference of the stator core (2). The rotor core (3) is detachably installed inside the inner space of the stator core (2). A rotating shaft (5) is embedded in the center of the rotor core (3), and cooling fans (6) are installed on one or both sides of the rotor core (3). Permanent magnet slots (7) are formed along the end face of the rotor core (3), and permanent magnets are installed in the permanent magnet slots (7). A junction box (4) is fixedly provided on the machine base (1). An end cover (8) is detachably provided on one side of the machine base (1) along the installation side of the rotor core (3). Both sides of the machine base (1) are closed by a housing (9).

2. The novel electric motor according to claim 1, wherein: The permanent magnet slots (7) are arranged in a radial or U-shaped hybrid structure.

3. The novel electric motor according to claim 2, characterized in that: A magnetic isolation empty slot (10) is also formed on the rotor core (3), and a magnetic isolation material is filled in the magnetic isolation empty slot (10). The magnetic isolation material is an aluminum-based composite material.

4. The novel motor according to claim 3, characterized in that: Stator windings are provided on a plurality of the stator cores (2), and the stator windings are arranged on the stator teeth of the stator cores (2) in a cross-ring array manner.

5. The novel electric motor according to claim 4, wherein: Auxiliary pole slots (11) are formed on the rotor core (3), and auxiliary poles are embedded in the auxiliary pole slots (11). The auxiliary pole slots (11) are made of silicon steel structure.

6. The novel electric motor according to claim 5, characterized in that: The rotating shaft (5) is connected to the end cover of the machine base (1) through bearings.

7. The novel motor according to claim 6, characterized in that: The stator core (2) is arranged in a 4-pole 24-slot structure.

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