CN211791195U - Novel four-stator four-rotor combined energy-saving motor - Google Patents

Abstract

The utility model discloses a novel four-stator four-rotor combined energy-saving motor, belonging to the technical field of motors, comprising a rotor and four stators, wherein the rotor comprises an outer rotor part and an inner rotor part; the outer rotor part is arranged outside the cylindrical inner rotor part; an inner stator area is formed between the outer rotor part and the inner rotor part, and an outer stator area is formed between the outer rotor part and the motor shell; the outer rotor part and the inner rotor part are connected through a flange, and the flange divides the inner stator area into a first inner stator area and a second inner stator area; the flange divides the outer stator area into a first stator area and a second stator area; the four stators are respectively arranged in the first and the second inner stator areas and the first and the second outer stator areas. The utility model discloses utilize the magnetic field of stator both sides to drive the rotor, avoided the waste of the energy. Compare with traditional motor, under the condition that reaches the same power, the utility model discloses used winding group number is less, causes the volume of stator to reduce, practices thrift wire winding material, and economic benefits is high.

Description

Novel four-stator four-rotor combined energy-saving motor

Technical Field

The utility model relates to the technical field of electric machines, more specifically relates to a novel four-stator four-rotor combined energy-saving motor.

Background

The conventional permanent magnet motor is divided into an inner rotor motor and an outer rotor motor according to the difference of the installation positions of the rotors, wherein the inner rotor motor is used for arranging the rotors in a circular area surrounded by the stators, and the outer rotor motor is used for arranging the rotors outside the stators. In a traditional permanent magnet motor, a winding on a stator is electrified, and the phase is automatically changed under the action of a magnetic induction Hall or a magnetic induction coil, so that a magnetic induction line rotating magnetic field is generated, and a rotor is driven to rotate.

After a stator of a traditional permanent magnet motor is electrified, only one side of a magnetic field generated by a winding acts on a rotor, and the magnetic field on the other side cannot act on the rotor, so that energy waste is caused.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model discloses the technical problem who solves is: how to drive the rotor by using the magnetic fields on both sides of the stator winding.

To achieve the purpose, the utility model adopts the following technical proposal:

a novel combined energy-saving motor with four stators and four rotors comprises a motor shell, a rotor and four stators, wherein the stators and the rotor are arranged in the motor shell; the stator comprises a plurality of stator cores which are distributed annularly, and coils with magnetic induction lines penetrating through two radial sides of the stator cores are wound on the stator cores; the rotor comprises an outer rotor part, an inner rotor part and a flange; the outer rotor part is arranged outside the cylindrical inner rotor part, and the outer rotor part and the inner rotor part are connected through a flange; an inner stator area is formed between the outer rotor part and the inner rotor part, and an outer stator area is formed between the outer rotor part and the motor shell; the outer rotor part and the inner rotor part are connected through a flange, and the flange divides the inner stator area into a first inner stator area and a second inner stator area; the flange divides the outer stator region into a first outer stator region and a second outer stator region; the four stators are respectively arranged in the first and second inner stator areas and the first and second outer stator areas; the inner side surface of the outer rotor part and the outer side surface of the inner rotor part are provided with a plurality of permanent magnet modules which are distributed annularly, and the polarities of the two adjacent permanent magnet modules are opposite; the permanent magnet modules of the inner rotor part and the outer rotor part are opposite in position and same in number, and the polarity of the permanent magnet modules facing the stator area at the opposite position of the inner rotor part and the outer rotor part is opposite; the permanent magnets of the permanent magnet modules of the inner rotor part are obliquely arranged along the outer side face of the inner rotor part, and the permanent magnets of the permanent magnet modules of the outer rotor part are obliquely arranged along the inner side face of the outer rotor part.

Advantageously or exemplarily, the stator core of the stator placed in the outer stator region is fixed on the inner surface of the machine housing.

Advantageously or exemplarily, the stator further comprises a fixed ring, a plurality of stator cores are annularly distributed on the fixed ring, and the stator further comprises a fixed frame for fixing the stator cores on the fixed ring; the stator iron core is of an I-shaped structure and comprises a first arc part, a second arc part and a middle part connecting the first arc part and the second arc part, and the coil is wound on the middle part of which the two sides are provided with grooves; a fixing hole of the first arc part which vertically penetrates through is formed in the first arc part, and the fixing frame penetrates through the fixing hole and is fixedly connected to the fixing ring; a stator core of the stator disposed in the inner stator region is configured to: with a first arc segment facing the outer rotor portion and a second arc segment facing the inner rotor portion.

Advantageously or exemplarily, each of the permanent magnet modules comprises a plurality of permanent magnets, wherein the plurality of permanent magnets of the permanent magnet module of the inner rotor portion are vertically installed along an outer side surface thereof, and the plurality of permanent magnets of the permanent magnet module of the outer rotor portion are obliquely installed along an inner side surface thereof;

advantageously or exemplarily, the plurality of permanent magnets of the permanent magnet modules of the inner rotor part are obliquely arranged along the outer side surface of the inner rotor part, and the plurality of permanent magnets of the permanent magnet modules of the outer rotor part are vertically arranged along the inner side surface of the outer rotor part.

Beneficially or exemplarily, the inclination angle of the obliquely installed plurality of permanent magnets is 5 to 15 degrees.

The rotor comprises an inner rotor part, a front end cover, a rear end cover and a stator, wherein the inner rotor part is arranged in the front end cover, the front end cover is arranged in the front end cover, the rear end cover is arranged in the rear end cover, the stator is arranged in the front end cover, the front end cover is arranged in the rear end cover, the stator is arranged in the rear end cover, and the stator is arranged in the front end cover.

The utility model has the advantages that:

the utility model discloses a design the structure of stator and rotor, make full use of the magnetic field and the effect of inner rotor part and external rotor part of the regional stator both sides of inner stator, motor whole output equals inner rotor part and external rotor part power sum, make full use of the magnetic field of stator both sides, avoided the waste of the energy.

Furthermore, the utility model discloses still make full use of the inside space of motor, set up the stator again between outer rotor part and motor housing for the both sides magnetic field of the permanent magnet module 35 of outer rotor part can be utilized equally, has further improved the whole output of motor.

Under above-mentioned two kinds of energy-conserving effects, compare with traditional motor, under the condition that reaches the same power, the utility model discloses used wire winding group number is showing and is reducing, causes the volume of stator to show the reduction, practices thrift wire winding material, and economic benefits is high.

Drawings

Fig. 1 is a sectional view of a novel four-stator four-rotor combined energy-saving motor according to an embodiment of the present invention.

Fig. 2 is a perspective view of a novel four-stator four-rotor combined energy-saving motor according to an embodiment of the present invention.

Fig. 3 is a matching view of four stators and rotors of a novel four-stator four-rotor combined energy-saving motor according to an embodiment of the present invention.

Fig. 4 is a stator structure diagram of an inner stator area of a novel four-stator four-rotor combined energy-saving motor according to an embodiment of the present invention.

Fig. 5 is a schematic diagram of the distribution of the stator cores of the novel four-stator four-rotor combined energy-saving motor according to an embodiment of the present invention.

Fig. 6 is a rotor structure diagram of a novel four-stator four-rotor combined energy-saving motor according to an embodiment of the present invention.

Fig. 7 is a stator structure diagram of an outer stator region of a novel four-stator four-rotor combined energy-saving motor according to an embodiment of the present invention.

Fig. 8 is a cross-sectional view of a stator and a rotor of a novel four-stator four-rotor combined energy-saving motor according to an embodiment of the present invention.

Fig. 9 is a magnetic induction line directional diagram of the permanent magnet modules of the inner rotor part and the outer rotor part of the novel four-stator four-rotor combined energy-saving motor according to an embodiment of the present invention.

Fig. 10 is a rotor structure diagram of a novel four-stator four-rotor combined energy-saving motor according to an embodiment of the present invention.

Fig. 11 is a rotor structure diagram of a novel square-wave permanent magnet energy-saving motor according to an embodiment of the present invention.

Fig. 12 is a rotor structure diagram of a novel sine wave permanent magnet energy-saving motor according to an embodiment of the present invention.

Fig. 13 is a structural diagram of a front end cover or a rear end cover of a novel four-stator four-rotor combined energy-saving motor according to an embodiment of the present invention.

Fig. 14 is another structural diagram of a front end cover or a rear end cover of a novel four-stator four-rotor combined energy-saving motor according to an embodiment of the present invention.

Fig. 15 is a matching diagram of a front end cover or a rear end cover and a stator of a novel four-stator four-rotor combined energy-saving motor according to an embodiment of the present invention.

Fig. 16 shows the magnetic induction line direction of the coil on the stator core at a certain time of the novel four-stator four-rotor combined energy-saving motor according to an embodiment of the present invention.

Fig. 17 is a cross-sectional view of a rotor of a novel four-stator four-rotor combined energy-saving motor according to an embodiment of the present invention.

Fig. 18 is a sectional view of a novel four-stator four-rotor combined energy-saving motor according to an embodiment of the present invention.

In the figure:

10-a motor housing; 20-a stator; 21-a fixed ring; 22-a stator core; 221-a first arc segment; 222-a second arc segment; 223-middle part; 224-fixation holes; 23-a coil; 24-a fixing frame; 30-a rotor; 31-an outer rotor portion; 32-an inner rotor portion; 33-a flange; 34-a rotating shaft; 35-permanent magnet modules; 36-inner stator region; 361-a first inner stator region; 362-a second inner stator region; 37-an outer stator region; 371 — a first outer stator region; a second outer stator region; 40-a front end cover; 50-rear end cap.

Detailed Description

Explanation of the drawings:

fig. 1 shows the structural relationship of the stator 20 and the rotor 30 from a sectional view, with four stators 20 being located in respective stator regions. Fig. 2 shows an overall view of the motor. Fig. 3 shows the mating relationship of the stator 20 and the rotor 30 in three dimensions, and fig. 4 shows the structural interrelationship of the components within the stator 20 in the inner stator region 36. Fig. 5 shows a distribution relationship of the stator cores 22 in the stator 20. Fig. 6 shows the structural interrelation of the components in the rotor 30, and fig. 6 shows a rotor structure of a hybrid electric machine in which the permanent magnet modules 35 of the outer rotor portion 31 are installed obliquely along the side surfaces thereof, and the permanent magnet modules 35 of the inner rotor portion 32 are installed vertically along the side surfaces thereof. Fig. 7 shows the stator structure in the outer stator region in three dimensions. Fig. 8 shows the structural relationship of the stator 20 and the rotor 30 from another sectional direction. Fig. 9 shows the magnetic induction line directions of the permanent magnet modules 35 on the inner rotor part 32 and the outer rotor part 31 in the rotor 30. Figures 10-12 show rotor structure diagrams of different embodiments of the invention; fig. 10 is a rotor structure of a hybrid motor, fig. 11 is a rotor structure of a square wave motor, and fig. 12 is a rotor structure of a sine wave motor. Fig. 13 shows a structure of a fixing bracket 24 capable of fixing the stator 20 to the front cover or the rear cover. Fig. 14 shows the structure of the front or rear cover in fig. 13 from another direction. Fig. 15 shows a structure in which the front cover or the rear cover in fig. 13 fixes the stator 20. Fig. 16 shows the direction of the induction lines of the coils 23 on the lower stator 20 at a certain time, and each coil 23 acts as a separate magnet to emit induction lines to both sides in the radial direction of the stator core 22. Fig. 17 shows a sectional structure of the rotor 30. Fig. 18 shows a sectional structure when the stator of the outer stator section 37 is disposed on the inner surface of the motor case 10.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Example 1: (embodiment using a two-sided magnetic field)

The embodiment provides a novel four-stator four-rotor combined energy-saving motor, which comprises a motor shell 10, a rotor 30 and four stators 20, wherein the stators 20 and the rotor 30 are arranged in the motor shell 10; the stator 20 includes a plurality of stator cores 22 distributed in an annular shape, and coils 23, which can pass through the stator cores 22 at two radial sides, are wound on the stator cores 22. The rotor 30 includes an outer rotor portion 31, an inner rotor portion 32, and a flange 33; an inner stator region 36 is formed between the outer rotor part 31 and the inner rotor part 32, and an outer stator region 37 is formed between the outer rotor part 31 and the motor housing 10; the outer rotor portion 31 and the inner rotor portion 32 are connected by a flange 33, the flange 33 dividing the inner stator region 36 into a first inner stator region 361 and a second inner stator region 362; the flange 33 divides the outer stator region 37 into a first outer stator region 371 and a second outer stator region 371; the four stators 20 are respectively arranged in the first and second inner stator areas and the first and second outer stator areas; the inner side surface of the outer rotor part 31 and the outer side surface of the inner rotor part 32 are provided with a plurality of permanent magnet modules 35 which are distributed annularly, and the polarities of the two adjacent permanent magnet modules 35 are opposite.

The winding way on the stator core is various, the proportioning way of the coil 23 and the permanent magnet module 35 is the same as that of a common motor, and in one embodiment, the ratio of the number of the permanent magnet modules 35 of the outer rotor part 31, the number of the coil 23 and the number of the permanent magnet modules 35 of the inner rotor part 32 is 2:3: 2. In other embodiments, other proportioning relationships are also possible.

Further, the outer rotor portion 31 is made of a nonmagnetic material so that magnetic induction lines can pass through the outer rotor portion 31.

The combined energy-saving motor with four stators and four rotors can be used as a motor and a generator.

When the motor is used, the coil 23 on the stator core 22 is electrified with three-phase current, and the working process of the two stators in the inner stator area 36 is explained: because the stator core 22 is made of a magnetic conductive material, after the coil 23 on the stator core 22 is energized, the magnetic induction lines of the coil 23 can pass through two radial sides of the stator core 22, and meanwhile, because the outer rotor part 31 and the inner rotor part 32 are respectively arranged at two radial sides of the stator core 22, the magnetic induction lines generated by the coil 23 act on the outer rotor part 31 and the inner rotor part 32 at two radial sides. At this time, each stator core 22 forms a single magnet, and generates magnetic fields having different phases, with N and S poles respectively facing the outer rotor portion 31 and the inner rotor portion 32 on both sides of the stator core 22 in the radial direction. The direction and intensity of the magnetic field generated by the coil 23 of the stator core 22 change with time, and the phases of the coils 23 of the adjacent stator cores 22 are different.

The operation of the two stators in the outer stator region 37 is explained: after three-phase current is applied, the coils 23 on the stator core 22 generate a magnetic field that acts on the permanent magnet modules 35 on the outer rotor portion 31.

When the three-phase current changes, the stators 20 of the outer stator area and the inner stator area respectively generate rotating magnetic fields to drive the outer rotor part 31 and the inner rotor part 32 provided with the permanent magnet module 35 to rotate together, when the magnetic field of the stator core 22 changes, the stators 20 of the outer stator area and the inner stator area form rotating magnetic fields, the magnetic field of the stator 20 in the inner stator area 36 acts on the permanent magnet modules 35 of the outer rotor part 31 and the inner rotor part 32, and the magnetic field of the stator 20 in the outer stator area 37 acts on the permanent magnet module 35 of the outer rotor part 31. Wherein the rotating magnetic field changes of the stators of the outer stator area and the inner stator area are synchronized, and the directions of the forces exerted on the rotor 30 by the stators 20 of the outer stator area and the inner stator area respectively can be superposed, so that the total output power of the rotor 30 is equal to the sum of the powers of the outer rotor part 31 and the inner rotor part 32. When the magnetic field of the stator core 22 changes, the two stators 20 form a rotating magnetic field.

In a further embodiment, in order to ensure that the forces exerted on the rotor 30 by the two stators of the outer stator region and the two stators of the inner stator region can produce a superposition effect, the number of the wire slots of the windings 23 on the stator cores 22 of the stators of the outer stator region and the inner stator region is the same, the arc angles are the same and symmetrical, the winding phases of the windings 23 on the opposite positions are the same, and the directions of the magnetic induction lines are the same, so that the rotating magnetic fields of the stators 20 of the outer stator region and the inner stator region are changed synchronously. In this case, the magnetic field changes of the stators 20 in the outer stator region and the inner stator region are synchronized and have the same phase, and the directions of the forces applied to the rotors 30 are the same, so that the superimposing effect is good.

In a further embodiment, in order to ensure that the stators of the first and second inner stator sections, the forces applied to the outer rotor portion 31 and the inner rotor portion 32 by the stators of the first and second outer stator sections can be superimposed, preferably, the two stators 20 of the first and second inner stator sections correspond to each other, and the two stators 20 of the first and second outer stator sections correspond to each other; specifically, the two stators 20 are laterally symmetrical, the phases of the currents in the coils 23 of the corresponding stator cores 22 are the same, and the phases and the directions of the rotating magnetic fields generated after the energization are the same. Further, the outer rotor part 31 and the inner rotor part 32 which are divided into two parts by the flange 33 are also transversely symmetrical, the positions of the permanent magnet modules 35 are consistent, and the magnetic pole directions are the same.

At this time, the number of poles of the two stators 20 corresponding to each other is identical, and the directions of forces applied to the outer rotor portion 31 and the inner rotor portion 32 are identical, so that the rotors 30 can be superimposed and rotated, and the output of the rotors 30 can be further improved.

As shown in fig. 9, in one embodiment, the direction of the lines of magnetic induction of the permanent magnet modules 35 is as shown.

In particular, when used as a motor, there are two effects for the stator 20 within the inner stator region 36, such that the output power of the rotor 20 is increased.

First, since the magnetic induction lines can pass through both sides of the stator core 22 in the radial direction, the magnetic induction lines of the coils 23 are fully utilized, the rotating magnetic field simultaneously drives the inner rotor portion 32 and the outer rotor portion 31 to rotate, and the output power of the rotor 20 is equal to the sum of the output powers of the inner rotor portion 32 and the outer rotor portion 31.

Second, the magnetic induction lines of the inner rotor portion 32 can enhance the magnetic field generated on the stator core 22 within a specific angular range, thereby enhancing the force of the magnetic field on the outer rotor portion 31. Specifically, when the rotor 30 rotates within a specific angle range, the stator core 22 with good magnetic conductivity is subjected to the magnetic induction line effect of the change of the inner rotor portion 32 to generate an induced magnetic field, and the induced magnetic field generated by the stator core 22 and the magnetic field generated by the coil 23 are in the same direction within the specific angle range, at this time, the two magnetic fields are superposed, and the magnetic field strength generated by the stator core 22 is equal to the sum of the rotating magnetic field of the coil 23 and the induced magnetic field of the stator core 22, so that the magnetic field generated by the stator core 22 is strengthened, the magnetic field acting on the outer rotor portion 31 is strengthened, and further, the acting force on the outer rotor portion 31 is improved. Likewise, in another specific angle range, the magnetic induction lines of outer rotor portion 31 can also enhance the magnetic field generated on stator core 22, thereby enhancing the force of the magnetic field on inner rotor portion 32. In one embodiment, the period of the three-phase current is adaptively adjusted to achieve the specific angle.

The specific angle is generated under the conditions: the direction of the induced magnetic field generated by the permanent magnet module 35 at the stator core 22 is the same as the direction of the rotating magnetic field of the coil 23 at that time.

The case where one of the specific angles occurs will be described by taking as an example the case where the inner rotor portion 32 reinforces the rotating magnetic field of the coil 23 on one of the stator cores 22: the direction and intensity of the magnetic field on one coil 23 change with time, and in a certain period of time, the coil 23 on one stator core 22 generates a magnetic field in one direction, and meanwhile, the direction of the magnetic induction line generated by one permanent magnet module 35 of the inner rotor part 32 to the inner stator area 36 is opposite to the direction of the magnetic induction line of the coil 23. When the permanent magnet module 35 rotates from one side of the stator core 22 to a position facing the stator core 22, the magnetic flux on the stator core 22 increases from small to large, so that the stator core 22 generates an induced magnetic field opposite to the direction of the magnetic field of the permanent magnet module 35, and at this time, the direction of the generated induced magnetic field is the same as the direction of the magnetic induction lines of the coil 23, thereby enhancing the rotating magnetic field of the coil 23. In the actual operation, the position of the coil 23 corresponding to the specific angle is large, and the magnetic field of the coil 23 can be effectively enhanced.

The above two functions, in cooperation, increase the output power of the rotor 30.

In particular, the term "four rotors" in the name of the present embodiment means two outer rotor portions 31 and two inner rotor portions 32 that are formed by dividing the four rotors by a flange 33.

The second action described above also enhances the force of the stator 20 of the outer stator region 37 against the outer rotor portion 31. Specifically, as described above, due to the presence of the second action, the stator core 22 of the inner stator region in which the magnetic field is enhanced causes the magnetic field of the outer rotor portion 31 to be enhanced within a certain angle range. At this time, the force of the stator 20 of the outer stator region 37 against the outer rotor portion 31 is increased.

In practice, the outer rotor portion 31 and the inner rotor portion 32 are each divided into two by the flange 33, one part of the two-divided rotor 30 corresponds to the two stators of the first inner stator region 361 and the first outer stator region 371, and the other part of the rotor 30 corresponds to the two stators of the second inner stator region 362 and the second outer stator region 372. This is true for stators 20 disposed within the second inner stator region 362 and the second outer stator region 372, respectively. In the present embodiment, four stators 20 drive four parts to rotate, and the overall output power of the rotor 30 is equal to the sum of the powers of the four rotating parts.

In a further embodiment, to ensure that the forces exerted by the four stators on the outer rotor portion 31 and the inner rotor portion 32 can be superimposed, it is preferable that the four stators 20 rotate synchronously with the same phase of the rotating magnetic field and the same number of turns of the coils 23; specifically, the four stators 20 are laterally symmetrical, the phases of the currents in the coils 23 of the corresponding stator cores 22 are the same, and the phases and the directions of the rotating magnetic fields generated after the energization are the same. Further, the outer rotor part 31 and the inner rotor part 32 which are divided into two parts by the flange 33 are also transversely symmetrical, the positions of the permanent magnet modules 35 are consistent, and the magnetic pole directions are the same.

At this time, the number of poles of the four stators 20 is uniform, and the directions of forces applied to the outer rotor portion 31 and the inner rotor portion 32 are uniform, so that the rotors 30 can be superimposed and rotated, thereby further improving the output of the rotors 30.

Compared with the conventional motor, in the present embodiment, through the structural design of the stator 20 and the rotor 30, the stator 20 in the inner stator region 36 uses each stator core 22 as a single electromagnetic winding, so that the outer rotor portion 31 and the inner rotor portion 32 of the rotor 30 are driven by the magnetic fields on both sides of the plurality of single electromagnetic windings, which is equivalent to driving the inner rotor portion 32 and the outer rotor portion 31 by the magnetic fields on both sides of the stator 20 using the inner stator region 36, the overall output power of the rotor 30 is equal to the sum of the output powers of the inner rotor portion 32 and the outer rotor portion 31, the magnetic fields on both sides of the stator 20 and the space inside the motor are fully utilized, and the waste of energy is avoided. The magnetic field of stator 20 within outer stator region 37 drives rotation of outer rotor portion 31, further increasing the output of rotor 30. Compare with traditional motor, under the condition that reaches the same power, the utility model discloses used winding group number is less, causes stator 20's volume to reduce, practices thrift wire winding material, and economic benefits is high. Meanwhile, the magnetic fields on the two sides of the permanent magnet module 35 on the outer rotor part 31 are also utilized, the two stators 20 act on the outer rotor part 31 through the magnetic field of the permanent magnet module 35 on the outer rotor part 31 respectively to drive the outer rotor part to rotate, so that the output power of the rotor 30 is further improved, and when the same power is achieved, the utilization efficiency of energy sources can be further improved compared with a traditional motor due to the utilization of the magnetic fields on the two sides of the outer rotor part 31, and the purposes of energy conservation and environmental protection are achieved.

When the permanent magnet generator is used as a generator, since the stator core 22 is made of a magnetic conductive material, the magnetic induction lines of the permanent magnet modules 35 of the inner rotor portion 32 and the outer rotor portion 31 can act on the coils 23 through the two sides of the stator core 22 of the stator 20 of the inner stator region 36 in the radial direction, and simultaneously, the magnetic induction lines of the permanent magnet modules 35 of the outer rotor portion 31 can act on the coils 23 of the stator 20 of the outer stator region 37. At this time, the rotor 30 rotates, the permanent magnet modules 35 thereon rotate to form a rotating magnetic field, and the coils 23 of the stator 20 of the outer and inner stator regions are electromagnetically induced to generate synchronous electromotive force and output electric power to the outside.

The same effect exists for stators 20 disposed within the second inner stator zone 362 and the second outer stator zone 372, respectively, with the generator output power being equal to the sum of the power generated by the four stator-driven four rotating parts.

In one embodiment, the outer rotor portion 31 and the inner rotor portion 32, which are divided into two parts by the flange 33, are also laterally symmetrical, and the permanent magnet modules 35 are uniformly distributed, so that the initial phases and frequencies of the alternating currents generated by the four stators 20 when the rotor 30 rotates are the same, and the electromotive forces generated by the stators 20 are superimposed.

Compared with the conventional generator, the coil 23 on the stator 20 of the inner stator region 36 in the present embodiment is simultaneously influenced by the magnetic induction lines generated by the permanent magnet modules 35 on the outer rotor portion 31 and the magnetic induction lines generated by the permanent magnet modules 35 on the inner rotor portion 32, so that the magnetic flux of the coil 23 on the stator 20 of the inner stator region 36 is changed more greatly, and the electromotive force can be generated more strongly. At the same time, the stator 20 of the outer stator region 37 is also subjected to magnetic induction lines to enhance the electromotive force of the output.

Example 2:

in the embodiment, as shown in fig. 18, the stator core 22 of the stator disposed in the outer stator region 37 is fixed on the inner surface of the motor housing 10, and at this time, the stator in the outer stator region 37 is disposed in the same manner as the stator of the conventional motor. Further, when the stators in the outer stator region 37 are disposed on the inner surface of the motor case 10, the stators of the outer stator region 37 may be disposed in two or more numbers to drive the outer rotor portion 31 to rotate together, thereby achieving a greater output power.

In another embodiment, as shown in fig. 5, the stators of the outer and inner stator regions 37 and 36 are fixed to the end cap, wherein the stators of the first inner stator region 361 and the first outer stator region 371 are fixed to the front end cap 40, and the stators of the second inner stator region 362 and the second outer stator region 372 are fixed to the rear end cap 50. Specifically, the stator 20 further includes a fixing ring 21, the plurality of stator cores 22 are annularly distributed on the fixing ring 21, the stator 20 further includes a fixing frame 24, and the fixing frame 24 is used for fixing the stator cores 22 on the fixing ring 21. Preferably, two stationary rings 21 are provided, and the stator core 22 is fixed between the two stationary rings 21.

In one embodiment, the stator core 22 has an i-shaped structure including a first arc portion 221, a second arc portion 222, and a middle portion 223 connecting the first arc portion and the second arc portion, and the coil 23 is wound around the middle portion 223 having grooves at both sides. The stator core 22 of the stator 20 disposed at the inner stator region 36 is configured to: the first arc portion 221 faces the outer rotor portion 31 and the second arc portion 222 faces the inner rotor portion 32.

In one embodiment, when the stator in the outer stator region 37 and the stator in the inner stator region 36 are both fixed on the front cover 40, the stator core 22 of the stator 20 disposed in the outer stator region 37 is configured to: the second arc portion 222 faces the outer rotor portion 31.

In a further embodiment, a fixing hole 224 of the first arc portion 221 is formed in the first arc portion 221 to penetrate vertically, and the fixing bracket 24 passes through the fixing hole 224 and is fixedly coupled to the fixing ring 21 to maintain the relative position between the stator cores 22.

Preferably, two fixing rings 21 are provided, the stator core 22 is fixed between the two fixing rings 21, and one end of the fixing frame 24 penetrates from one fixing ring 21 into the fixing hole 224, extends to the other fixing ring 21 along the fixing hole 224, and is fixed to the other fixing ring 21. Further, the other end of the fixing frame 24 is fixed on the front end cover 40 or the rear end cover 50, and the front end cover 40 is opposite to the rear end cover 50 and respectively disposed at two sides of the motor housing 10.

Example 3:

the present embodiment provides a novel wave mixing four-stator four-rotor combined energy-saving motor capable of generating wave mixing, as shown in fig. 6, fig. 6 shows a rotor structure of a wave mixing motor, each of the permanent magnet modules 35 includes a plurality of permanent magnets, wherein the plurality of permanent magnets of the permanent magnet module 35 of the inner rotor part 32 are vertically installed along the outer side surface thereof, and the plurality of permanent magnets of the permanent magnet module 35 of the outer rotor part 31 are obliquely installed along the inner side surface thereof. Or, as shown in fig. 10, fig. 10 shows another rotor structure of a hybrid electric machine, where the plurality of permanent magnets of the permanent magnet module 35 of the inner rotor portion 32 are installed obliquely along the outer side surface thereof, and the plurality of permanent magnets of the permanent magnet module 35 of the outer rotor portion 31 are installed vertically along the inner side surface thereof.

The operation of this embodiment, when used as a motor, is similar to that of example 1 above.

In the present embodiment, when used as a generator, the obliquely installed permanent magnet modules 35 can cause the stator 20 to generate sine-wave alternating current; meanwhile, the vertically installed permanent magnet modules 35 enable the stator 20 to generate square-wave alternating current. Therefore, the stator 20 can generate the mixing wave of the sine wave mixed square wave to realize the mixed wave output, and the waveform of the alternating current can be adaptively selected according to the use requirement, so that the alternating current is suitable for practical application.

In the present embodiment, since the output waveform is a mixed wave of a sine wave and a square wave, when the controller is selected, either the sine wave controller or the square wave controller can be selected, which improves the applicability of the motor of the present embodiment.

Further, the inclination angle of the plurality of obliquely arranged permanent magnets is 5-15 degrees, preferably 10 degrees. As shown in fig. 6 and 10, the plurality of permanent magnets installed obliquely in fig. 6 and 10 have an oblique angle of 10 degrees.

In one embodiment, when the permanent magnets 35 on the outer rotor portion 31 or the inner rotor portion 32 are installed obliquely, the obliquely installed permanent magnets 35 are divided into the stators 20 corresponding to different ones by the flange 33, and at this time, the positions of the permanent magnets 35 corresponding to different ones of the stators 20 are in one-to-one correspondence, so that the forces applied to the rotor portion where the permanent magnets are installed obliquely by the two stators 20 having the same rotating magnetic field can be maximally superimposed.

Example 4:

the present embodiment provides a novel four-stator four-rotor combined energy-saving motor capable of emitting a novel sine wave or a novel square wave of a sine wave or a square wave, as shown in fig. 11 and 12, the permanent magnet modules 35 of the inner rotor part 32 and the outer rotor part 31 are opposite in position and same in number, and the polarity of the permanent magnet modules 35 facing the inner stator region 36 at the position where the inner rotor part 32 is opposite to the outer rotor part 31 is opposite.

In the present embodiment, when used as a motor, the output of the rotor 30 can be further increased because:

because the polarities of the permanent magnet modules 35 at the opposite positions of the outer rotor part 31 and the inner rotor part 32 are opposite, the magnetic induction lines of the permanent magnet modules 35 of the outer rotor part 31 and the inner rotor part 32 are mutually constrained, so that most of the magnetic induction lines of the permanent magnet modules 35 are constrained between the opposite permanent magnet modules 35, the concentration degree of the magnetic induction lines at the inner stator region 36 is higher, and the magnetic field is stronger. Therefore, when the coil 23 is energized to generate a rotating magnetic field, the acting force of the rotating magnetic field on the permanent magnet modules 35 at the inner side and the outer side is enhanced, and the output power of the rotor is improved.

In particular, the outer rotor portion 31 and the stator in the outer stator region 37 constitute an inner rotor motor, and compared with the existing inner rotor motor, the output power of the inner rotor motor constituted by the outer rotor portion 31 and the stator in the outer stator region 37 is larger in this embodiment. The specific reasons are that:

because the stator 20 in the inner stator region 36 exists and the polarities of the permanent magnet modules 35 at the opposite positions of the outer rotor portion 31 and the inner rotor portion 32 are opposite, the magnetic induction lines of the permanent magnet modules 35 on the outer rotor portion 31 and the permanent magnet modules 35 on the inner rotor portion 32 are attracted by the ferrous stator 20, so that the magnetic induction lines emitted by the permanent magnet modules 35 on the inner rotor portion 32 can extend onto the outer rotor portion 31 after passing through the stator of the inner stator region 36, and further the magnetic field of the outer rotor portion 31 facing to the side of the outer stator region 37 is enhanced, so that the stator 20 of the outer stator region 37 can generate stronger driving force to the outer rotor portion 31, and further the whole output power of the motor is enhanced.

When the magnetic induction generator is used as a generator, similarly to the use as a motor, there is also a case where magnetic induction lines are bound to each other to cause magnetic induction line concentration, and the generated power of the generator is enhanced. Similarly, the inner rotor motor formed by the outer rotor part 31 and the stator in the outer stator region 37 can generate larger alternating current compared with the common inner rotor motor due to the reinforcing effect of the stator 20 in the inner stator region 36, and the alternating current generated by the action of the outer rotor part 31 on the stator of the inner stator region 36 and the alternating current generated by the action of the inner rotor part 32 on the stator of the inner stator region 36 are overlapped, so that the output efficiency is improved.

In a further embodiment, as shown in fig. 12, fig. 12 shows a rotor structure of a sine wave motor, and the plurality of permanent magnets of the permanent magnet module 35 of the inner rotor part 32 and the plurality of permanent magnets of the permanent magnet module 35 of the outer rotor part 33 are obliquely installed along the corresponding side surfaces thereof, and preferably, the oblique angles of the plurality of permanent magnets of the two parts are the same.

The operation of the present embodiment, when used as a motor, is similar to that described above.

In one embodiment, the plurality of permanent magnets of the permanent magnet module 35 installed obliquely is inclined at an angle of 5 to 15 degrees, preferably, at an angle of 10 degrees. As shown in fig. 12, the plurality of permanent magnets in fig. 12 have a slant angle of 10 degrees.

The operation of the present embodiment, when used as a motor, is similar to that described above. When the permanent magnet module 35 is used as a generator, a superimposed sine wave alternating current is generated, and the size of the inclination angle of the plurality of permanent magnets of the permanent magnet module 35 installed obliquely influences the waveform of the sine wave generated by the stator 20.

And reasonably selecting the inclination angle according to the practical application condition.

In a further another embodiment, as shown in fig. 11, fig. 11 shows a rotor structure of a square wave motor, in which a plurality of permanent magnets of the permanent magnet module 35 of the inner rotor portion are vertically installed along an outer side surface of the inner rotor portion, and a plurality of permanent magnets of the permanent magnet module 35 of the outer rotor portion are vertically installed along an inner side surface of the outer rotor portion.

This embodiment, when used as a motor, is similar to the foregoing process. In this embodiment, when used as a generator, square wave ac power is generated.

In this embodiment, when the permanent magnet modules 35 are vertically installed, they can be used as a damping motor, and when they are used as a damping motor, the positions of the permanent magnet modules 35 on the inner side surface of the outer rotor part 31 and the outer side surface of the inner rotor part 32 are opposite, and the magnetic field directions are the same. At this time, since the positions are opposite, the magnetic fields of the permanent magnet modules 35 of the inner rotor portion 32 and the permanent magnet modules 35 of the outer rotor portion 31 can be directly superimposed, so that the magnetic field acting on the stator 20 is larger than in the case where one of the permanent magnets is installed obliquely. When the rotor 30 rotates, especially when the stator 20 of the inner stator region 36 rotates between the two permanent magnet modules 35, the magnetic flux of the coil 23 on the stator 20 changes from one side to the other side, and the value changes greatly, so that the stator 20 generates a great induced electromotive force, which hinders further rotation of the rotor 30.

In the present embodiment, similarly, since the two parts of the permanent magnet modules 35 can be overlapped, compared with the conventional damping motor, the induced electromotive force generated on the stator 20 is larger, and the generated damping effect is better.

Example 5: (installation mode of rotating shaft and front cover)

The embodiment provides a rotating shaft setting mode of a novel sinusoidal wave or square wave four-stator four-rotor combined energy-saving motor, and the embodiment further includes a rotating shaft 34, the rotating shaft 34 is connected to the inner rotor part, the rotating shaft 34 passes through a front end cover 40 and a rear end cover 50 and is rotatably connected with the front end cover 40 and the rear end cover 50 through bearings, and the stator 20 is fixedly arranged on the front end cover 40 and the rear end cover 50.

When the stator core is combined with the embodiment 2, one end of the fixing frame 24 passes through the fixing ring 21 and then is fixed on the front end cover 40 or the rear end cover 50, and the other end of the fixing frame penetrates through the fixing hole 224 of the stator core 22, extends to the fixing ring 21 distributed annularly on the stator core 22, and is fixed with the fixing ring 21.

When the stator core 22 is provided with the fixing rings 21 on both vertical sides, a hole for the fixing frame 24 to pass through is formed in the fixing ring 21 facing the front end cover 40 or the rear end cover 50, and the fixing frame 24 passes through the hole, enters the fixing hole 224 of the stator core 22, and extends and is fixed to the fixing ring 21, far away from the end cover, of the stator core 22.

The present embodiment can provide a water-cooling heat dissipation structure to dissipate heat of the stator 20, and the specific structure thereof is similar to that disclosed in CN 204012958U.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims (6)

1. A novel combined energy-saving motor with four stators and four rotors is characterized by comprising a motor shell, a rotor and four stators, wherein the stators and the rotor are arranged in the motor shell;

the stator comprises a plurality of stator cores which are distributed annularly, and coils with magnetic induction lines penetrating through two radial sides of the stator cores are wound on the stator cores;

the rotor comprises an outer rotor part, an inner rotor part and a flange; the outer rotor part is arranged outside the cylindrical inner rotor part, and the outer rotor part and the inner rotor part are connected through a flange;

an inner stator area is formed between the outer rotor part and the inner rotor part, and an outer stator area is formed between the outer rotor part and the motor shell;

the outer rotor part and the inner rotor part are connected through a flange, and the flange divides the inner stator area into a first inner stator area and a second inner stator area; the flange divides the outer stator region into a first outer stator region and a second outer stator region; the four stators are respectively arranged in the first and second inner stator areas and the first and second outer stator areas;

the inner side surface of the outer rotor part and the outer side surface of the inner rotor part are provided with a plurality of permanent magnet modules which are distributed annularly, and the polarities of the two adjacent permanent magnet modules are opposite;

the permanent magnet modules of the inner rotor part and the outer rotor part are opposite in position and same in number, and the polarity of the permanent magnet modules facing the stator area at the opposite position of the inner rotor part and the outer rotor part is opposite;

the permanent magnets of the permanent magnet modules of the inner rotor part are obliquely arranged along the outer side face of the inner rotor part, and the permanent magnets of the permanent magnet modules of the outer rotor part are obliquely arranged along the inner side face of the outer rotor part.

2. The new four-stator four-rotor combined energy-saving motor as claimed in claim 1, wherein the stator core of the stator disposed in the outer stator region is fixed on the inner surface of the motor housing.

3. The novel combined energy-saving motor with four stators and four rotors as claimed in claim 1, wherein the stator further comprises a fixed ring, a plurality of stator cores are annularly distributed on the fixed ring,

the stator also comprises a fixed frame, and the fixed frame is used for fixing the stator core on the fixed ring; the stator iron core is of an I-shaped structure and comprises a first arc part, a second arc part and a middle part connecting the first arc part and the second arc part, and the coil is wound on the middle part of which the two sides are provided with grooves; a fixing hole of the first arc part which vertically penetrates through is formed in the first arc part, and the fixing frame penetrates through the fixing hole and is fixedly connected to the fixing ring;

a stator core of the stator disposed in the inner stator region is configured to: with a first arc segment facing the outer rotor portion and a second arc segment facing the inner rotor portion.

4. The novel combined energy-saving motor with four stators and four rotors as claimed in claim 1, wherein each permanent magnet module comprises a plurality of permanent magnets, wherein,

the permanent magnets of the permanent magnet modules of the inner rotor part are vertically arranged along the outer side surface of the inner rotor part, and the permanent magnets of the permanent magnet modules of the outer rotor part are obliquely arranged along the inner side surface of the outer rotor part;

or the like, or, alternatively,

the permanent magnets of the permanent magnet modules of the inner rotor part are obliquely arranged along the outer side face of the inner rotor part, and the permanent magnets of the permanent magnet modules of the outer rotor part are vertically arranged along the inner side face of the outer rotor part.

5. The novel combined energy-saving motor with four stators and four rotors as claimed in claim 4, wherein the inclination angle of the obliquely installed permanent magnets is 5-15 degrees.

6. The novel combined energy-saving motor with the four stators and the four rotors as claimed in claim 1, further comprising a rotating shaft, wherein the rotating shaft is connected to the inner rotor part, passes through the front end cover and the rear end cover and is rotatably connected with the front end cover and the rear end cover through bearings, and the stators are fixedly arranged on the front end cover and the rear end cover.

Images