Synchronous reluctance motor

Abstract

The utility model relates to a synchronous reluctance motor, which comprises a stator core and a rotor core, the stator core is sleeved on the periphery of the rotor core, a gap is reserved between the stator core and the rotor core, a plurality of stator tooth grooves are uniformly arranged on the surface of the stator core along the circumferential direction, windings are arranged in the stator tooth grooves, and ferrite is embedded in magnetic barrier grooves. A plurality of second through grooves are evenly distributed along the circumference of the rotor core, one side of each second through groove is communicated with the corresponding magnetic barrier groove, the other side of each second through groove penetrates to the outer side of the rotor core, a plurality of first through grooves penetrating through the inner side and the outer side of the stator core are formed in the stator core, and connecting grooves are communicated between the stator tooth grooves and the first through grooves. The outer side of the rotor core is uniformly connected with a plurality of fan blades along the circumferential direction of the rotor core. According to the utility model, heat generated during operation of the rotor and the stator can be effectively dissipated, and the aging process of each part of the motor is prevented from being accelerated due to a high-temperature environment generated during continuous operation, so that the service life of the whole system is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to reluctance motor technical field especially synchronous reluctance motor. BACKGROUND

[0002] Synchronous reluctance machines generally comprise a rotor rotatably arranged within a stator, wherein the stator generally comprises a plurality of windings and magnetic poles with alternating polarity, and the rotor is made of steel or other ferrous material and preferably comprises one or more intrinsic poles. Torque is generated by the reluctance phenomenon, wherein a controller controls the stator to generate a rotating magnetic field, which induces a magnetic field in the rotor, and the interaction of these two magnetic fields generates torque on the rotor.

[0003] During the operation of the synchronous reluctance motor, when the current passes through the stator winding, the Joule heat will be generated due to the resistance of the winding, and when the alternating magnetic field passes through the iron core material, the iron loss and eddy current loss will be caused, which are finally converted into heat energy, so that a certain heat will be generated on the rotor and the stator, and the heat is not convenient to dissipate, which leads to temperature rise, and the high temperature environment in the continuous operation will accelerate the aging process of each part of the motor, thereby shortening the service life of the whole system. SUMMARY

[0004] The utility model provides synchronous reluctance motor in view of prior art's insufficient, specific technical scheme is as follows:

[0005] Synchronous reluctance motor, including stator core and rotor core, the stator core is set up in the periphery of rotor core and is left the gap between rotor core, the stator core surface is evenly provided with a plurality of stator tooth slot along the circumferential direction, the stator tooth slot is arranged with winding, a plurality of magnetic barrier grooves are evenly distributed on the rotor core along the circumference of the rotor core, the magnetic barrier groove is embedded with ferrite, a plurality of second through slots are evenly distributed along the circumference of the rotor core, one side of the second through slot is communicated with the magnetic barrier groove, the other side of the second through slot penetrates to the outside of the rotor core, a plurality of first through slots that penetrate the inside and outside of the stator core are arranged on the stator core, the connecting groove is communicated between the stator tooth slot and the first through slot, a plurality of fan blades are evenly connected to the outside of the rotor core along the circumference of the rotor core.

[0006] As the improvement of the above technical solution: the magnetic barrier groove is connected with a plurality of first heat dissipation strips, the second through slot is connected with a second heat dissipation strip, one end of the first heat dissipation strip is connected with the second heat dissipation strip, one end of the second through slot located on the outside of the rotor core is provided with a cooling fin, and the cooling fin is connected with the second heat dissipation strip.

[0007] As the improvement of the above technical scheme, the first through slot is connected with an L-shaped heat dissipation block, one end of the L-shaped heat dissipation block extends to the outside of the stator core, and the other end of the L-shaped heat dissipation block sequentially passes through the connecting slot and the stator tooth slot.

[0008] As the improvement of the above technical scheme, the first heat dissipation strip, the second heat dissipation strip, the heat dissipation fin and the L-shaped heat dissipation block are all made of copper or aluminum material.

[0009] The motor device has the advantages that:

[0010] 1. When the motor device is running, heat is generated around the ferrite and the windings in the stator tooth slot, and the rotor core will rotate continuously during operation, thereby driving the fan blades on the rotor core to rotate synchronously, so that air flow is generated between the stator core and the rotor core, the heat stored in the magnetic barrier groove around the ferrite is introduced into the first through slot through the second through slot, and then flows out to the outside of the stator core from the first through slot, and the heat generated in the stator tooth slot flows out to the outside of the stator core through the stator tooth slot and the first through slot, thereby effectively dissipating the heat generated on the stator core and the rotor core.

[0011] 2. Part of the heat generated around the ferrite is absorbed into the first heat dissipation strip, the heat of the first heat dissipation strip is then transferred to the second heat dissipation strip and the heat dissipation fin, and then is discharged through the gap and the first through slot, and part of the heat dissipated in the stator tooth slot flows out to the outside through the L-shaped heat dissipation block on the connecting slot along with the first through slot, thereby further effectively dissipating the heat generated during the operation of the rotor and the stator, avoiding the generation of high temperature environment during continuous operation and accelerating the aging process of the motor components, thereby improving the service life of the entire system. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the whole utility model;

[0013] Figure 2 It is Figure 1 an enlarged structural schematic diagram of position A.

[0014] Reference signs: 1, stator core; 11, stator tooth slot; 111, connecting slot; 12, first through slot; 13, L-shaped heat dissipation block; 2, rotor core; 21, magnetic barrier groove; 211, first heat dissipation strip; 22, second through slot; 23, second heat dissipation strip; 3, fan blade; 4, ferrite; 5, heat dissipation fin. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the utility model more clear and explicit, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and do not limit the utility model.

[0016] Embodiment

[0017] Please refer to Figures 1-2 The synchronous reluctance motor comprises a stator core 1 and a rotor core 2, the stator core 1 is sleeved outside the rotor core 2 and a gap is left between the stator core 1 and the rotor core 2, a plurality of stator tooth slots 11 are evenly arranged on the surface of the stator core 1 along the circumferential direction, the stator tooth slots 11 are arranged with windings, a plurality of magnetic barrier grooves 21 are evenly distributed on the rotor core 2 along the circumference of the rotor core 2, ferrites 4 are embedded in the magnetic barrier grooves 21, a plurality of second through grooves 22 are evenly distributed along the circumference of the rotor core 2, one side of the second through groove 22 is connected with the magnetic barrier groove 21, and the other side of the second through groove 22 penetrates to the outside of the rotor core 2, a plurality of first through grooves 12 are arranged on the stator core 1 and penetrate the inside and outside of the stator core 1, the connection grooves 111 are connected between the stator tooth slots 11 and the first through grooves 12, and a plurality of fan blades 3 are evenly connected to the outside of the rotor core 2 along the circumferential direction of the rotor core 2.

[0018] Specifically, during the operation of the synchronous reluctance motor, the rotor pole units composed of the magnetic barrier grooves 21 and the ferrites 4 are arranged alternately in N poles and S poles, the windings can be controlled by the controller to generate a rotating electric field, the rotating electric field induces a magnetic field adjacent to the rotor to generate a mechanical torque in the rotor. The motor can be controlled to operate as a torque motor and / or a generator. The overall operation of the above-mentioned synchronous reluctance motor is known to those skilled in the art, and therefore will not be described in detail here.

[0019] In an optional embodiment, a plurality of first heat dissipation strips 211 are connected in the magnetic barrier grooves 21, a second heat dissipation strip 23 is connected in the second through groove 22, one end of the first heat dissipation strip 211 is connected with the second heat dissipation strip 23, and a heat dissipation fin 5 is arranged at one end of the second through groove 22 on the outside of the rotor core 2, and the heat dissipation fin 5 is connected with the second heat dissipation strip 23.

[0020] In an optional embodiment, an L-shaped heat dissipation block 13 is connected in the first through groove 12, one end of the L-shaped heat dissipation block 13 extends to the outside of the stator core 1, and the other end of the L-shaped heat dissipation block 13 sequentially penetrates the connection grooves 111 and the stator tooth slots 11.

[0021] In an optional embodiment, the first heat dissipation strips 211, the second heat dissipation strip 23, the heat dissipation fin 5 and the L-shaped heat dissipation block 13 are all made of copper or aluminum material, specifically, copper or aluminum has good heat conductivity, and they are non-magnetic materials, which do not affect the normal operation of the whole device.

[0022] Specifically, when the motor device is running, heat is generated around the ferrite 4 and the winding in the stator tooth slot 11. During running, the rotor core 2 rotates continuously, thereby driving the fan blades 3 on the rotor core 2 to rotate synchronously, so that air flow is generated between the stator core 1 and the rotor core 2. The heat stored in the magnetic barrier slot 21 around the ferrite 4 is guided into the first through slot 12 through the second through slot 22, and then flows out of the first through slot 12 to the outside of the stator core 1. The heat generated in the stator tooth slot 11 flows out of the stator core 1 through the stator tooth slot 11 and the first through slot 12, thereby effectively dissipating the heat generated on the stator core 1 and the rotor core 2;

[0023] Part of the heat generated around the ferrite 4 is absorbed into the first heat dissipation strip 211, and the heat of the first heat dissipation strip 211 is then transferred to the second heat dissipation strip 23 and the heat dissipation fin 5, and then guided out through the gap and the first through slot 12. Part of the heat dissipated in the stator tooth slot 11 flows out to the outside through the L-shaped heat dissipation block 13 on the connecting slot 111 along with the first through slot 12, thereby further effectively dissipating the heat generated during the running of the rotor and the stator.

[0024] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A synchronous reluctance motor comprising a stator core (1) and a rotor core (2), the stator core (1) being sleeved on the periphery of the rotor core (2) and leaving a gap between the stator core (1) and the rotor core (2), a plurality of stator tooth slots (11) being uniformly arranged on the surface of the stator core (1) in the circumferential direction, the stator tooth slots (11) being arranged with windings, a plurality of magnetic barrier grooves (21) being uniformly distributed on the rotor core (2) in the circumferential direction, and ferrite (4) being embedded in the magnetic barrier grooves (21), characterized in that, A plurality of second through-slots (22) are uniformly distributed along the circumferential direction of the rotor core (2), one side of the second through-slots (22) is communicated with the magnetic barrier slot (21), the other side of the second through-slots (22) penetrates to the outside of the rotor core (2), a plurality of first through-slots (12) penetrating the inside and outside of the stator core (1) are arranged on the stator core (1), the stator tooth slot (11) and the first through-slot (12) are communicated with the connecting slot (111), a plurality of fan blades (3) are uniformly connected to the outside of the rotor core (2) along the circumferential direction of the rotor core (2).

2. The synchronous reluctance machine of claim 1, wherein: A plurality of first heat dissipation strips (211) are connected in the magnetic barrier slot (21), a second heat dissipation strip (23) is connected in the second through-slot (22), one end of the first heat dissipation strip (211) is connected with the second heat dissipation strip (23), one end of the second through-slot (22) located at the outside of the rotor core (2) is provided with a heat dissipation fin (5), the heat dissipation fin (5) is connected with the second heat dissipation strip (23).

3. The synchronous reluctance machine of claim 2, wherein: An L-shaped heat dissipation block (13) is connected in the first through-slot (12), one end of the L-shaped heat dissipation block (13) extends to the outside of the stator core (1), the other end of the L-shaped heat dissipation block (13) sequentially penetrates the connecting slot (111) and the stator tooth slot (11).

4. The synchronous reluctance machine of claim 3, wherein: The first heat dissipation strip (211), the second heat dissipation strip (23), the heat dissipation fin (5) and the L-shaped heat dissipation block (13) are all made of copper or aluminum material.

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