CN210898664U

CN210898664U - Motor for 12-slot 8-pole electric compressor

Info

Publication number: CN210898664U
Application number: CN201921404144.8U
Authority: CN
Inventors: 朱利青; 吴志民; 周华平; 顾建新
Original assignee: Suzhou Bote Motor Co ltd
Current assignee: Suzhou Bote Motor Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-06-30
Anticipated expiration: 2029-08-27

Abstract

The utility model discloses a 12 slot 8 utmost point motors for electric compressor, including stator core and rotor core, stator core inner wall sets up slottedly all around, two be provided with the stator tooth utmost point between the adjacent one side in groove, the surface of stator tooth utmost point is provided with stator coil, rotor core' S surface is provided with permanent magnet S utmost point and permanent magnet N utmost point respectively, the groove is seted up around the stator core inner wall to the quantity in groove is twelve groups, the quantity of stator tooth utmost point is twelve groups, the tooth tip of stator tooth utmost point all is provided with the pole shoe, four be provided with hall element A, hall element B and hall element C between the adjacent one side of stator tooth utmost point respectively. A12 slot 8 utmost point motor for electric compressor, be equipped with stator tooth utmost point and stator coil, can realize that efficiency is higher, can also realize reduction in production cost's purpose, be fit for most popularization, bring better use prospect.

Description

Motor for 12-slot 8-pole electric compressor

Technical Field

The utility model relates to the technical field of motors, specifically be a 12 grooves 8 utmost point motors for electric compressor.

Background

The motor is an electromagnetic device which realizes the conversion or transmission of electric energy according to the law of electromagnetic induction, or converts one form of electric energy into another form of electric energy, the motor converts the electric energy into mechanical energy, commonly called as a motor, the generator converts the mechanical energy into the electric energy, the motor is represented by a letter M in a circuit and mainly has the main function of generating driving torque to be used as a power source of electrical appliances or various machines, the electromagnetic direct current motor is composed of a stator magnetic pole, a rotor (armature), a commutator (commonly called as a commutator), an electric brush, a shell, a bearing and the like, and the stator magnetic pole (main magnetic pole) of the electromagnetic direct current motor is composed of an iron core and an excitation winding. The motors can be classified into series-excited dc motors, parallel-excited dc motors, separately-excited dc motors, and compound-excited dc motors according to their excitation (old standard called excitation). Because of different excitation modes, the magnetic flux of the stator magnetic pole (generated by the excitation coil of the stator magnetic pole after being electrified) is different, and the commutator segments of the commutator are made of alloy materials such as silver, copper, cadmium, copper and the like and are molded by high-strength plastics. The brushes are in sliding contact with the commutator to provide armature current to the rotor windings. The brush of the electromagnetic dc motor is generally a metal graphite brush or an electrochemical graphite brush.

The general motors for the electric compressors mostly adopt permanent magnet synchronous motors according to requirements, but the general permanent magnet synchronous motors are mostly three-slot motors, higher-grade motors are five-slot motors or seven-slot motors, the power of the general permanent magnet synchronous motors does not support the future market, and the teeth of the general motors are not in the surface current direction, so that the general motors are easy to disorder during machining and cause machining failure.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a 12 slots 8 utmost point motors for electric compressor possesses the advantage that improves electric compressor motor power and improve stator coil winding rate, has solved the lower and lower problem of winding rate of current electric compressor motor power.

(II) technical scheme

For realizing above-mentioned improvement motor compressor power purpose, the utility model provides a following technical scheme: the utility model provides a 12 slot 8 utmost point motors for electric compressor, includes stator core and rotor core, be provided with slottedly, two around the stator core inner wall be provided with the stator tooth utmost point between the adjacent one side in groove, the surface of stator tooth utmost point is provided with stator coil, rotor core 'S inner wall is provided with permanent magnet S utmost point and permanent magnet N utmost point respectively, the winding groove has been seted up on the surface of stator tooth utmost point to stator core' S surface mounting has the instruction arrow point.

Preferably, the slots are arranged on the periphery of the inner wall of the stator core, and the number of the slots is twelve.

Preferably, the number of the stator tooth poles is twelve, and the tooth ends of the stator tooth poles are provided with pole shoes.

Preferably, a hall element a, a hall element B and a hall element C are respectively arranged between adjacent sides of the four stator teeth.

Preferably, the stator coils are wound on the surface of the stator tooth pole, and the number of the stator coils is twelve.

Preferably, the number of the S poles of the permanent magnets and the number of the N poles of the permanent magnets are four groups respectively and are arranged alternately.

Preferably, the stator core is adapted to the rotor core.

(III) advantageous effects

Compared with the prior art, the utility model provides a motor for 12 groove 8 utmost points electric compressor possesses following beneficial effect:

the motor for the 12-slot 8-pole electric compressor is characterized in that twelve groups of stator tooth poles and stator coils are arranged, and rotor cores with eight magnetic poles are arranged, wherein the pitch of all the stator coils is 1 and is called as concentrated winding, so that the effect of fractional slot concentrated winding is achieved, the motor has the advantages of excellent torque characteristic, small positioning torque and small torque fluctuation, the length of the end parts of the stator coils is short, copper loss is small, efficiency is high, copper loss is small, the service life of the stator coils is longer, the use is more durable, no overlapping exists between the windings, phase insulation is good, the stator coils are easy to be mechanically off-line, the purpose of reducing production cost is achieved, the motor is suitable for most popularization, has better power compared with the traditional motor for the low-slot electric compressor, larger power is provided, the use effect is better, and through the arrangement of winding slots and indicating arrows, when a worker installs the stator coils on the stator tooth poles, can twine rapidly according to the winding groove, need not to calculate the winding many circles, can twine rapidly, through the setting of instruction arrow point, can distinguish stator coil current direction fast again, further improve winding efficiency, increased machining efficiency to a certain extent.

Drawings

Fig. 1 is a schematic structural view of a motor stator core for a 12-slot 8-pole electric compression machine according to the present invention;

fig. 2 is a schematic structural diagram of a motor rotor core for a 12-slot 8-pole electric compressor according to the present invention;

fig. 3 is a schematic structural view of a stator tooth and a stator coil of a motor for a 12-slot 8-pole motor compressor according to the present invention;

fig. 4 is a schematic structural diagram of a motor stator tooth pole and a winding groove for a 12-slot 8-pole motor compressor according to the present invention.

In the figure: 1. a stator core; 2. a rotor core; 3. a groove; 4. a stator tooth pole; 5. a stator coil; 6. a permanent magnet S pole; 7. a permanent magnet N pole; 8. a Hall element A; 9. a Hall element B; 10. a Hall element C; 11. a winding groove; 12. indicating an arrow.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a motor for a 12-slot 8-pole electric compressor includes a stator core 1 and a rotor core 2, slots 3 are formed around the inner wall of the stator core 1, a stator tooth pole 4 is arranged between adjacent sides of the two slots 3, a stator coil 5 is arranged on the surface of the stator tooth pole 4, the pitch of all the stator coil 5 is 1, which is called a concentrated winding, 12 stator coils 5 are totally arranged, a permanent magnet S pole 6 and a permanent magnet N pole 7 are respectively arranged on the inner wall of the rotor core 2, the four permanent magnet S poles 6 and the permanent magnet N poles 7 are in a surface mount type, the magnetic field direction of the magnetic poles is radial, winding slots 11 are formed in the surface of the stator tooth pole 4, the number of the winding slots 11 can be preprocessed according to the number of the coils, and an indication arrow 12 is installed on.

Further, the slots 3 are arranged on the periphery of the inner wall of the stator core 1, the number of the slots 3 is twelve, and twelve slots 3 form twelve stator teeth 4.

Furthermore, the number of the stator teeth 4 is twelve, and the teeth end parts of the stator teeth 4 are provided with pole shoes, so that the stator coil 5 can be wound conveniently.

Furthermore, a Hall element A8, a Hall element B9 and a Hall element C10 are respectively arranged between adjacent sides of the four stator teeth 4, the polarity change is detected through the Hall element A8, the Hall element B9 and the Hall element C10, a signal is sent to control a driving circuit to switch three-phase currents, the Hall element is a magnetic sensor based on a Hall effect, the magnetic field and the change of the magnetic field can be detected through the Hall element A8, the Hall element B9 and the Hall element C10, and the Hall element has the advantages of firm structure, small volume, light weight, long service life, convenience in installation, low power consumption, high frequency, vibration resistance and no fear of pollution or corrosion of dust, oil stain, water vapor, salt mist and the like.

Further, the stator coils 5 are wound on the surface of the stator teeth 4, the number of the stator coils 5 is twelve, the twelve stator coils 5 form a three-phase winding, and the ends of the three phases are connected to form a star connection.

Further, the permanent magnet S poles 6 and the permanent magnet N poles 7 are respectively in four groups and are arranged alternately.

Further, the stator core 1 is matched with the rotor core 2, so that the rotor core 2 can be smoothly inserted into the stator core 1.

The working principle is as follows: when the permanent magnet motor is required to work, different from a three-phase backstepping motor or a three-phase synchronous motor, the input of the permanent magnet motor is not a sine wave, only two phases are electrified at each moment, the Hall element A8, the Hall element B9 and the Hall element C10 are respectively installed at a gap between two stator teeth 4 of the stator core 1, when the junction of two magnetic poles of the rotor core 2 passes through the Hall element A8, the Hall element B9 and the Hall element C10, the Hall element A8, the Hall element B9 and the Hall element C10 detect the polarity change, a signal is sent to control a driving circuit to switch three-phase currents, after the stator coil 5 is powered on, the motor is started to rotate according to the asynchronous motor principle, when the motor is accelerated to rotate to the synchronous rotating speed, the synchronous electromagnetic torque generated by the permanent magnet field of the rotor core 2 and the stator core magnetic field 1 is synthesized with the reluctance torque generated by the permanent magnet field of the stator core 1, the rotor core 2 is drawn into synchronization and the motor enters synchronous operation.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a motor for 12 slots 8 poles electric compressor, includes stator core (1) and rotor core (2), its characterized in that: stator core (1) inner wall be provided with all around slottedly (3), two be provided with stator tooth utmost point (4) between the adjacent one side in groove (3), the surface of stator tooth utmost point (4) is provided with stator coil (5), the inner wall of rotor core (2) is provided with permanent magnet S utmost point (6) and permanent magnet N utmost point (7) respectively, winding groove (11) have been seted up on the surface of stator tooth utmost point (4) to the surface mounting of stator core (1) has instruction arrow point (12).

2. A motor for a 12-slot 8-pole motor-compressor according to claim 1, characterized in that: the slots (3) are arranged on the periphery of the inner wall of the stator core (1), and the number of the slots (3) is twelve.

3. A motor for a 12-slot 8-pole motor-compressor according to claim 1, characterized in that: the number of the stator teeth poles (4) is twelve, and the teeth ends of the stator teeth poles (4) are provided with pole shoes.

4. A motor for a 12-slot 8-pole motor-compressor according to claim 1, characterized in that: hall element A (8), Hall element B (9) and Hall element C (10) are respectively arranged between one adjacent sides of the four stator teeth (4).

5. A motor for a 12-slot 8-pole motor-compressor according to claim 1, characterized in that: the stator coils (5) are wound on the surfaces of the stator teeth poles (4), and the number of the stator coils (5) is twelve.

6. A motor for a 12-slot 8-pole motor-compressor according to claim 1, characterized in that: the permanent magnet S poles (6) and the permanent magnet N poles (7) are respectively in four groups and are arranged alternately.

7. A motor for a 12-slot 8-pole motor-compressor according to claim 1, characterized in that: the stator core (1) is matched with the rotor core (2).