CN211830522U

CN211830522U - Double-rotor motor

Info

Publication number: CN211830522U
Application number: CN202020847364.4U
Authority: CN
Inventors: 沈恩明; 沈以撒; 沈荣泉; 林谦元
Original assignee: HUZHOU NANYANG ELECTRIC-MOTOR CO LTD
Current assignee: HUZHOU NANYANG ELECTRIC-MOTOR CO LTD
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-10-30
Anticipated expiration: 2030-05-20

Abstract

The utility model discloses a double-rotor motor, which comprises a stator (1), wherein the outer side of the stator (1) is provided with an outer rotor (2), the outer rotor (2) is provided with an outer rotor shaft, the inner side of the stator (1) is provided with an inner rotor (3), and the inner rotor (3) is provided with an inner rotor shaft; the stator (1) comprises an annular stator outer framework (10), and a plurality of first magnetic poles (11) distributed in the circumferential direction are arranged in the stator outer framework (10). Adopt the utility model discloses a washing machine has the clothing and easily washs the cleanliness factor, be difficult for washing the advantage that destroys and the energy consumption is lower.

Description

Double-rotor motor

Technical Field

The utility model belongs to washing machine motor field especially relates to a birotor motor that washing machine used.

Background

The structure of the motor for the existing washing machine comprises a stator, wherein a rotor is arranged in the stator, a rotor shaft is arranged on the rotor, motor covers which are penetrated by the rotor shaft are arranged on two sides of the stator, and the motor covers are used for fixing the rotor shaft. The motor is in the mounting structure of washing machine, the stator passes through the motor lid to be fixed with washing machine's base, the rotor passes through the rotor shaft and is fixed with washing machine's impeller, and the rotor is ordered about to the magnetic field repulsion between stator and the rotor and rotates to the drive impeller rotates, and the impeller drives the clothing and stirs in outer bucket and washs, for the slew velocity that improves the impeller, makes the clothing wash cleaner, still can set up the gearbox usually between rotor shaft and impeller.

The applicant finds that, as the outer barrel is fixed, the clothes are driven only by the impeller and have single power, the clothes are driven by a unidirectional and constant rotating force, the rubbing force is too low for some dirty clothes and is difficult to clean, and the rubbing force is too high for some easily deformed clothes (such as woolen clothes) and is easy to wash (wash and deform). In addition, the gearbox has large resistance, and the driving force of the motor is greatly lost in the process of transmitting the driving force to the impeller, so that the energy consumption of the washing machine is large.

Therefore, the washing machine adopting the existing motor has the defects that the clothes are difficult to clean or easy to wash and destroy, and the energy consumption is larger.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a birotor motor. Adopt the utility model discloses a washing machine has the clothing and easily washs the cleanliness factor, be difficult for washing the advantage that destroys and the energy consumption is lower.

The technical scheme of the utility model: a double-rotor motor comprises a stator, wherein an outer rotor is arranged on the outer side of the stator, an outer rotor shaft is arranged on the outer rotor, an inner rotor is arranged on the inner side of the stator, and an inner rotor shaft is arranged on the inner rotor.

In the double-rotor motor, the stator comprises an annular stator outer framework, and a plurality of first magnetic poles distributed circumferentially are arranged in the stator outer framework.

In the aforementioned dual-rotor motor, thirty-six first magnetic poles are provided, and each first magnetic pole includes a coil and an iron core having an i-shaped cross section; the stator outer frame is of a hollow structure, an annular stator inner frame is arranged in the stator outer frame, a plurality of magnetic pole fixing portions are arranged on the outer side of the stator inner frame, the iron core is embedded in the magnetic pole fixing portions, the two ends of the iron core extend outwards and penetrate through the inner side wall and the outer side wall of the magnetic pole fixing portions respectively, the coil is wound on the magnetic pole fixing portions, and a baffle plate connected with the magnetic pole fixing portions is arranged on the outer side of the coil.

In the above-mentioned birotor motor, the bottom of the outer skeleton of the stator is provided with the first connecting part which horizontally extends inwards, the first connecting part is annular, and the inner side of the first connecting part is upwards bulged to form the first concave part.

In the double-rotor motor, the outer rotor comprises a first cover plate located above the outer framework of the stator, a first flanging extending downwards is arranged at the outer edge of the first cover plate, the first flanging is located on the outer side of the outer framework of the stator, a second magnetic pole is arranged between the first flanging and the outer framework of the stator, and the second magnetic pole is fixed to the inner side wall of the first flanging.

In the above-mentioned dual-rotor motor, the second magnetic pole is made of a permanent magnet, the second magnetic pole is in an arc shape, the number of the second magnetic poles is twelve, and each second magnetic pole corresponds to four first magnetic poles.

In the dual-rotor motor, the middle part of the first cover plate is sunken downwards to form a second sunken part, a first ventilation hole is formed between the second sunken part and the first cover plate, a positioning hole is formed in the second sunken part, a positioning block is arranged in the positioning hole, a connecting plate connected with the second sunken part is arranged at the top of the positioning block, the bottom of the positioning block extends outwards to form a second connecting part, the second connecting part is fixed with the second sunken part, a first adjusting block is arranged on the positioning block, the first adjusting block is connected with the positioning block through splines, a first shaft hole penetrated by the outer rotor shaft is formed in the first adjusting block, and the first adjusting block is connected with the outer rotor shaft through splines.

In the double-rotor motor, the inner rotor comprises a second cover plate located between the first cover plate and the outer framework of the stator, the outer edge of the second cover plate extends downwards to form a second flanging, the second flanging is located on the inner side of the outer framework of the stator, a third magnetic pole is arranged between the second flanging and the outer framework of the stator, and the third magnetic pole is fixed to the outer side wall of the second flanging.

In the above-mentioned dual-rotor motor, the third magnetic pole is made of a permanent magnet, the third magnetic pole is in an arc shape, the number of the third magnetic poles is fourteen, and each third magnetic pole corresponds to three first magnetic poles.

In the double-rotor motor, the middle part of the second cover plate is downwards sunken to form a third sunken part, a second ventilation hole is formed in the joint of the third sunken part and the second cover plate, a fourth sunken part is arranged on the inner side of the third sunken part, a switching sleeve is arranged in the fourth sunken part, a second adjusting block is arranged on the switching sleeve, a second shaft hole which is penetrated by the inner rotor shaft is formed in the second adjusting block, and the second adjusting block is connected with the inner rotor shaft through a spline.

Compared with the prior art, the utility model discloses an inner rotor can be used to link to each other with the impeller for the drive impeller rotates, and the outer rotor can be used to be connected with outer bucket, is used for the outer bucket rotation of drive, and the stator is fixed with washing machine's base. The utility model discloses have inside and outside birotors, possess two power take off ends, stator of birotor sharing realizes winding (first magnetic pole) sharing, utilizes the stack principle in magnetic field, effectively utilizes the winding, only needs a motor just can realize rotating when impeller and outer bucket. Because the utility model has the double rotors, the impeller can be ensured to rotate, and the outer barrel can also rotate, when the rotating directions of the double rotors are opposite, the impeller and the outer barrel rotate oppositely, the relative rotating speed is high, and the clothes are driven by two rotating forces in opposite directions, the rubbing force is high, and the clothes can be cleaned completely; when the double rotors rotate in the same direction, the relative rotating speed between the impeller and the outer barrel is low, and the rubbing force applied to the clothes is small, so that the clothes which are easy to deform can not be washed. The utility model discloses can realize that rotation in opposite directions and syntropy between impeller and the outer bucket rotate, through changing the motion mode between impeller and the outer bucket, can simulate out the hand of artifical laundry and frustrate the mode, under the prerequisite of guaranteeing that the clothing is not washed out, can further improve the clean degree of clothing. Because the inner rotor and the outer rotor can rotate oppositely and the relative rotating speed is high, the rotation of the impeller or the outer barrel is not required to be improved by using a gearbox, the inner rotor directly drives the impeller to rotate, the outer rotor directly drives the outer barrel to rotate, the loss of the driving force of the motor is small, and the energy consumption of the washing machine is low.

Therefore, the washing machine of the utility model has the advantages of easy cleaning and cleanliness of clothes, difficult washing and destruction and low energy consumption.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a top perspective exploded view of the present invention.

Fig. 3 is a bottom perspective exploded view of the present invention.

Fig. 4 is a schematic structural view of the stator exoskeleton.

Fig. 5 is a top view of the stator endoskeleton.

Fig. 6 is a cross-sectional view at a-a of fig. 5.

Fig. 7 is a front view of the outer rotor.

Fig. 8 is an exploded schematic view of the outer rotor.

Fig. 9 is a front view of the inner rotor.

Fig. 10 is an exploded schematic view of the inner rotor.

Fig. 11 is a schematic top view of the first, second and third magnetic poles.

Fig. 12 is a wiring schematic diagram of the present invention.

Fig. 13 is a wiring schematic of a conventional motor.

The labels in the figures are: 1-stator, 2-outer rotor, 3-inner rotor, 10-stator outer skeleton, 11-first magnetic pole, 12-stator inner skeleton, 20-first cover plate, 21-first flanging, 22-second magnetic pole, 23-first adjusting block, 24-positioning block, 25-connecting plate, 30-second cover plate, 31-third magnetic pole, 32-adapter sleeve, 33-second adjusting block, 101-first connecting part, 102-first recess, 110-iron core, 111-coil, 112-connecting terminal, 120-magnetic pole fixing part, 121-baffle, 201-second recess, 202-first vent hole, 204-second connecting part, 230-first shaft hole, 231-extension part, 300-second flanging, 301-third recess, 302-second vent hole, 303-fourth recess, 330-second shaft hole.

Detailed Description

The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.

Examples are given. A dual rotor motor, as shown in fig. 1 to 3, includes a stator 1, an outer rotor 2 is disposed outside the stator 1, an outer rotor shaft (not shown) is disposed on the outer rotor 2, an inner rotor 3 is disposed inside the stator 1, and the inner rotor 3 is provided with an inner rotor shaft (not shown).

As shown in fig. 4, the stator 1 includes an annular stator outer frame 10, and a plurality of circumferentially distributed first magnetic poles 11 are disposed in the stator outer frame 10.

As shown in fig. 5, there are thirty-six first magnetic poles 11, and each first magnetic pole 11 includes a coil 111 and an iron core 110 having an i-shaped cross section; the stator outer frame 10 is of a hollow structure, an annular stator inner frame 12 is arranged in the stator outer frame 10, and a plurality of magnetic pole fixing portions 120 are arranged on the outer side of the stator inner frame 12. The bottom of the stator outer frame 10 is provided with a first connecting portion 101 extending horizontally and inwardly, the first connecting portion 101 is annular, and the inner side of the first connecting portion 101 is raised upwards to form a first recess 102.

As shown in fig. 6, the iron core 110 is embedded in the magnetic pole fixing portion 120, the magnetic pole fixing portion 120 is square, two ends of the iron core 110 extend outward and respectively penetrate through the magnetic pole fixing portion 120, the iron core 110 is i-shaped when viewed from above, a vertical arm of the iron core is located in the magnetic pole fixing portion 120, two transverse arms are respectively located on the inner side and the outer side of the magnetic pole fixing portion 120, the coil 111 is wound on the magnetic pole fixing portion 120, a baffle 121 connected with the magnetic pole fixing portion 120 is arranged on the outer side of the coil 111, and the baffle 121 is used for preventing the coil.

As shown in fig. 7 and 8, the outer rotor 2 includes a first cover plate 20 located above the stator outer frame 10, a first flange 21 extending downward is disposed on an outer edge of the first cover plate 20, the first flange 21 is located on an outer side of the stator outer frame 10, a second magnetic pole 22 is disposed between the first flange 21 and the stator outer frame 10, and the second magnetic pole 22 is fixed to an inner side wall of the first flange 21.

The second magnetic poles 22 are made of permanent magnets, the second magnetic poles 22 are cambered, the number of the second magnetic poles 22 is twelve, and each second magnetic pole 22 corresponds to four first magnetic poles 11.

The middle of the first cover plate 20 is recessed downwards to form a second recessed portion 201, a first vent 202 is arranged between the second recessed portion 201 and the first cover plate 20, a positioning hole is formed in the second recessed portion 201, a positioning block 24 is arranged in the positioning hole, a connecting plate 25 connected with the top surface of the second recessed portion 201 is arranged at the top of the positioning block 24, the connecting plate 25 is penetrated through by an outer rotor shaft, the bottom of the positioning block 24 extends outwards to form a second connecting portion 204, the second connecting portion 204 is fixed with the bottom surface of the second recessed portion 201, a first adjusting block 23 is embedded in the top surface of the positioning block 24, the first adjusting block 23 is in spline connection with the positioning block 24, an extending portion 231 penetrating through the positioning block 24 is arranged at the lower end of the first adjusting block 23, a first shaft hole 230 penetrating through the outer rotor shaft is arranged on the first adjusting block 23, and the first adjusting block 23.

As shown in fig. 9 and 10, the inner rotor 3 includes a second cover plate 30 located between the first cover plate 20 and the stator outer frame 10, an outer edge of the second cover plate 30 extends downward to form a second flange 300, the second flange 300 is located on an inner side of the stator outer frame 10, a third magnetic pole 31 is disposed between the second flange 300 and the stator outer frame 10, and the third magnetic pole 31 is fixed to an outer side wall of the second flange 300.

The third magnetic poles 31 are made of permanent magnets, the third magnetic poles 31 are cambered, the number of the third magnetic poles 31 is fourteen, and each third magnetic pole 31 corresponds to three first magnetic poles 11.

The middle part of the second cover plate 30 is downwards sunken to form a third sunken part 301, a second ventilation hole 302 is formed in the joint of the third sunken part 301 and the second cover plate 30, a fourth sunken part 303 is arranged on the inner side of the third sunken part 301, a switching sleeve 32 is arranged in the fourth sunken part 303, a second adjusting block 33 is embedded on the top surface of the switching sleeve 32, a second shaft hole 330 penetrated by the inner rotor shaft is formed in the second adjusting block 33, and the second adjusting block 33 is in spline connection with the inner rotor shaft.

As shown in fig. 11, each of the second magnetic poles 22 corresponds to four first magnetic poles 11, which means that two first magnetic poles 11 are completely located within the wrap angle range of the arc-shaped second magnetic pole 22, and two other first magnetic poles are partially located within the wrap angle range of the arc-shaped second magnetic pole 22, and each of the second magnetic poles 22 is influenced by the magnetic fields of the four first magnetic poles 11. Each third magnetic pole 31 corresponds to three first magnetic poles 11, which means that there are three first magnetic poles 11 passing through the angular coverage of the third magnetic pole 31, and each third magnetic pole 31 is influenced by the magnetic fields of the three first magnetic poles 11.

As shown in fig. 13. The existing wiring mode of the motor is commonly powered by a three-phase power supply, three adjacent electrified magnetic poles are taken as a group, three magnetic poles in the same group are respectively connected with three live wires of the three-phase power supply, and the three magnetic poles in the same group are all connected with a zero line; the numerals in fig. 13 only indicate the nth magnetic pole, and since three magnetic poles are grouped, only the first magnetic pole number in the group is drawn without drawing. As shown in fig. 12, the utility model discloses a two three phase current supply, three phase current of looks spaced group parallel use, three first magnetic pole of group is connected with three live wires that correspond three phase current respectively to connect corresponding zero line simultaneously.

The utility model discloses mounting means in the washing machine: the first cover plate 20, the adapter sleeve 32 and the first connecting part 101 are used for being fixed with a base of the washing machine, the outer rotor shaft is fixed with an outer barrel of the washing machine, and the inner rotor shaft is fixed with a wave wheel of the washing machine.

Claims

1. A double-rotor motor is characterized in that: the motor stator comprises a stator (1), wherein an outer rotor (2) is arranged on the outer side of the stator (1), an outer rotor shaft is arranged on the outer rotor (2), an inner rotor (3) is arranged on the inner side of the stator (1), and the inner rotor shaft is arranged on the inner rotor (3).

2. The dual-rotor motor of claim 1, wherein: the stator (1) comprises an annular stator outer framework (10), and a plurality of first magnetic poles (11) distributed in the circumferential direction are arranged in the stator outer framework (10).

3. The dual rotor motor of claim 2, wherein: thirty-six first magnetic poles (11), wherein each first magnetic pole (11) comprises a coil (111) and an iron core (110) with an I-shaped cross section; stator exoskeleton (10) is hollow structure, be equipped with annular stator inner frame (12) in stator exoskeleton (10), the outside of stator inner frame (12) is equipped with a plurality of magnetic pole fixed part (120), iron core (110) are inlayed and are located in magnetic pole fixed part (120), and the both ends of iron core (110) all extend to the outside, pass the inside and outside lateral wall of magnetic pole fixed part (120) respectively, coil (111) twine on magnetic pole fixed part (120), and the outside of coil (111) is equipped with baffle (121) of being connected with magnetic pole fixed part (120).

4. The dual rotor motor of claim 2, wherein: the bottom of the stator outer framework (10) is provided with a first connecting portion (101) which extends horizontally inwards, the first connecting portion (101) is annular, and the inner side of the first connecting portion (101) is raised upwards to form a first concave portion (102).

5. The dual-rotor motor of claim 1, wherein: the outer rotor (2) comprises a first cover plate (20) located above a stator outer framework (10), a first flanging (21) extending downwards is arranged on the outer edge of the first cover plate (20), the first flanging (21) is located on the outer side of the stator outer framework (10), a second magnetic pole (22) is arranged between the first flanging (21) and the stator outer framework (10), and the second magnetic pole (22) is fixed to the inner side wall of the first flanging (21).

6. The dual rotor motor of claim 5, wherein: the material of second magnetic pole (22) is the permanent magnet, and second magnetic pole (22) are the cambered surface shape, and the quantity of second magnetic pole (22) has twelve, and every second magnetic pole (22) corresponds four first magnetic poles (11).

7. The dual rotor motor of claim 5, wherein: the middle of the first cover plate (20) is downwards sunken to form a second sunken part (201), a first ventilation hole (202) is formed between the second sunken part (201) and the first cover plate (20), a positioning hole is formed in the second sunken part (201), a positioning block (24) is arranged in the positioning hole, a connecting plate (25) connected with the second sunken part (201) is arranged at the top of the positioning block (24), the bottom of the positioning block (24) extends outwards to form a second connecting part (204), the second connecting part (204) is fixed with the second sunken part (201), a first adjusting block (23) is arranged on the positioning block (24), the first adjusting block (23) is in spline connection with the positioning block (24), a first shaft hole (230) penetrated by an outer rotor shaft is formed in the first adjusting block (23), and the first adjusting block (23) is in spline connection with the outer rotor shaft.

8. The dual-rotor motor of claim 1, wherein: the inner rotor (3) comprises a second cover plate (30) located between the first cover plate (20) and the stator outer framework (10), the outer edge of the second cover plate (30) extends downwards to form a second flanging (300), the second flanging (300) is located on the inner side of the stator outer framework (10), a third magnetic pole (31) is arranged between the second flanging (300) and the stator outer framework (10), and the third magnetic pole (31) is fixed to the outer side wall of the second flanging (300).

9. The dual rotor motor of claim 8, wherein: the third magnetic poles (31) are made of permanent magnets, the third magnetic poles (31) are cambered, the number of the third magnetic poles (31) is fourteen, and each third magnetic pole (31) corresponds to three first magnetic poles (11).

10. The dual rotor motor of claim 8, wherein: the middle part of second apron (30) is sunken downwards and is formed third depressed part (301), third depressed part (301) are equipped with second ventilation hole (302) with the junction of second apron (30), the inboard of third depressed part (301) is equipped with fourth depressed part (303), be equipped with switching cover (32) in fourth depressed part (303), be equipped with second regulating block (33) on switching cover (32), be equipped with second shaft hole (330) that are passed by the inner rotor axle on second regulating block (33), splined connection between second regulating block (33) and the inner rotor axle.