阅读说明：本技术 一种复合式双转子电机及洗衣机 (Combined type birotor motor and washing machine ) 是由 沈恩明 沈以撒 于 2021-08-09 设计创作，主要内容包括：本发明公开了一种复合式双转子电机及洗衣机,包括定子组件(1),定子组件(1)上分别设有两组定子绕组(2),两组定子绕组(2)呈周向分布定子组件(1)上,每组定子绕组(2)位于定子组件(1)的部分周向区域内,两组定子绕组(2)外部均连接有电源连接端子(3),所述定子组件(1)的内外两侧分别设有内转子(4)和外转子(5)。本发明通过将两组定子绕组呈周向绕组在定子组件上,使得本发明能够通过两组定子绕组分别对内转子和外转子进行驱动,提高对洗衣机的驱动效果,同时两组定子绕组在布置后还无需额外增加其径向上的空间,有效缩小本发明所需的空间尺寸。(The invention discloses a combined type double-rotor motor and a washing machine, which comprise a stator assembly (1), wherein two groups of stator windings (2) are respectively arranged on the stator assembly (1), the two groups of stator windings (2) are circumferentially distributed on the stator assembly (1), each group of stator windings (2) is positioned in a partial circumferential area of the stator assembly (1), the outer parts of the two groups of stator windings (2) are respectively connected with a power supply connecting terminal (3), and the inner side and the outer side of the stator assembly (1) are respectively provided with an inner rotor (4) and an outer rotor (5). According to the invention, the two groups of stator windings are arranged on the stator component in a circumferential winding manner, so that the inner rotor and the outer rotor can be respectively driven through the two groups of stator windings, the driving effect on the washing machine is improved, and the radial space of the two groups of stator windings does not need to be additionally increased after the two groups of stator windings are arranged, so that the space size required by the washing machine is effectively reduced.)

1. A combined type birotor motor is characterized in that: including stator module (1), be equipped with two sets of stator winding (2) on stator module (1) respectively, on two sets of stator winding (2) were circumference distribution stator module (1), every group stator winding (2) were located the part circumference region of stator module (1), and two sets of stator winding (2) outside all is connected with power connection terminal (3), the inside and outside both sides of stator module (1) are equipped with inner rotor (4) and outer rotor (5) respectively.

2. The composite dual rotor motor of claim 1, wherein: the stator assembly (1) is provided with a plurality of stator teeth in an annular distribution mode, the stator teeth are divided into a first winding portion and a second winding portion along the circumferential direction, and the first winding portion and the second winding portion are respectively connected with two groups of stator windings (2).

3. The composite dual rotor motor of claim 1, wherein: the external connection control power of power connection terminal (3), control power passes through two sets of stator winding (2) of circuit control and moves simultaneously, perhaps control power passes through circuit switching control two sets of stator winding (2) and moves in turn.

4. The composite dual rotor motor of claim 1, wherein: stator module (1) includes stator core, and stator core is including being a plurality of iron core teeth (6) of annular distribution, and alternate segregation between each iron core tooth (6), through articulamentum (7) interconnect between a plurality of iron core teeth (6).

5. The composite dual rotor motor of claim 4, wherein: the two ends of the iron core teeth (6) are respectively provided with a first tooth top (601) and a second tooth top (602), and the connecting layer (7) is a plastic-coated layer or a stator framework.

6. The composite dual rotor motor of claim 5, wherein: the stator framework comprises an upper stator framework (8) and a lower stator framework (9) which are detachably connected, and a buckling cavity (10) for connecting a stator core is formed between the upper stator framework (8) and the lower stator framework (9); a first tooth top (601) and a second tooth top (602) at two ends of the iron core tooth (6) respectively extend to the outer side of the buckling cavity (10) and are buckled with the buckling cavity (10) mutually; and a plastic coating layer is arranged on the outer side of the stator framework.

7. The composite dual rotor motor of claim 4, wherein: and the connecting layer (7) is provided with a mounting groove, and two Hall sensors (11) are arranged in the mounting groove.

8. Washing machine, its characterized in that: the washing machine includes the composite double-rotor motor of any one of claims 1 to 7.

9. The washing machine as claimed in claim 8, wherein: the washing machine is a pulsator washing machine, an inner rotor of a combined type double-rotor motor is connected with a washing machine pulsator through an inner rotating shaft, and an outer rotor of the combined type double-rotor motor is connected with an inner tub of the washing machine through an outer rotating shaft; the impeller and the inner barrel of the washing machine rotate in different directions and different rotating speeds during washing, or the impeller and the inner barrel of the washing machine rotate in different directions and different rotating speeds during washing; the impeller and the inner tub rotate in the same direction and at the same speed during dewatering.

10. The washing machine as claimed in claim 8, wherein: the washing machine is a drum-type washing machine, an inner rotor and an outer rotor of a combined double-rotor motor are both connected with a rotating shaft, the outer part of the rotating shaft is connected with an outer barrel of the washing machine, the inner rotor and the outer rotor rotate at the same rotating speed in the same direction when the outer barrel of the washing machine is used for washing, and the inner rotor and the outer rotor rotate at the same rotating speed in the same direction when the outer barrel of the washing machine is used for dewatering.

Technical Field

The invention relates to a washing machine motor, in particular to a combined type double-rotor motor and a washing machine.

Background

The traditional washing machine motor comprises a stator and a rotor which are matched with each other, the outside of the rotor is connected with a washing machine impeller through a rotor shaft, so that the rotor can drive the impeller to rotate through magnetic field repulsion force between the rotor and the stator, and clothes can be cleaned in an inner barrel in a rotating mode. However, the driving method of fixing the inner barrel and rotating the impeller causes the problem that the clothes are difficult to clean because of too low kneading force. The requirements of manufacturers and users cannot be met.

To solve the problem, manufacturers add a rotor on the basis of the existing motor structure to form a dual-rotor motor, so that the inner barrel and the impeller can be driven by the two rotors to rotate in opposite directions, and the cleaning effect is improved. The dual-rotor motor has two driving modes for the rotors, the first mode is to drive the two rotors to act by using a group of stator windings, but the matching effect between the stator and the rotors is relatively limited and the driving effect is poor due to the fixed number of pole slots of the stator windings in the driving structure. The second is that two sets of different stator windings are respectively arranged at the inner side and the outer side of the stator component, and the two sets of stator windings respectively correspond to the inner rotor and the outer rotor and realize driving; compared with the first structure, the structure can independently control the pole slot matching between the stator and the rotor, but the structure only actually combines two motor stators, and the wiring structure, the occupied space and the production cost of the stator winding of the structure are twice of those of the existing motor stators, so that manufacturers cannot meet the actual pursuit of a double-rotor motor. Therefore, there is a need for a motor for a washing machine having a good driving effect and a small occupied space.

Disclosure of Invention

The invention aims to provide a combined type double-rotor motor and a washing machine. The driving device has the characteristics of good driving effect and small occupied space.

The technical scheme of the invention is as follows: the utility model provides a combined type birotor motor, includes stator module, is equipped with two sets of stator winding on the stator module respectively, and two sets of stator winding are on the stator module that distributes of circumference, and every group stator winding is located stator module's part circumference region, and two sets of stator winding outsides all are connected with power connection terminal, stator module's inside and outside both sides are equipped with inner rotor and outer rotor respectively.

In the combined type dual-rotor motor, the stator assembly is annularly provided with the plurality of stator teeth, the plurality of stator teeth are divided into the first winding portion and the second winding portion along the circumferential direction, and the first winding portion and the second winding portion are respectively connected with the two groups of stator windings.

In the composite dual-rotor motor, the power connection terminal is externally connected with a control power supply, and the control power supply controls the two sets of stator windings to operate simultaneously through a circuit or controls the two sets of stator windings to operate alternately through circuit switching.

In the aforementioned combined type birotor motor, stator module includes stator core, and stator core includes a plurality of iron core teeth that are the annular and distribute, and the alternate segregation between each iron core tooth is through articulamentum interconnect between a plurality of iron core teeth.

In the combined type dual-rotor motor, the two ends of the core teeth are respectively provided with the first tooth top and the second tooth top, and the connecting layer is a plastic-coated layer or a stator framework.

In the combined type dual-rotor motor, the stator framework comprises an upper stator framework and a lower stator framework which are detachably connected, and a fastening cavity connected with a stator core is formed between the upper stator framework and the lower stator framework; the first tooth tops and the second tooth tops at two ends of the iron core teeth respectively extend to the outer side of the buckling cavity and are buckled with the buckling cavity; and a plastic coating layer is arranged on the outer side of the stator framework.

In the combined type dual-rotor motor, the connecting layer is provided with a mounting groove, and two hall sensors are arranged in the mounting groove.

The washing machine comprises the combined type double-rotor motor.

In the foregoing washing machine, the washing machine is a pulsator washing machine, an inner rotor of the combined type dual-rotor motor is connected with a washing machine pulsator through an inner rotating shaft, and an outer rotor of the combined type dual-rotor motor is connected with an inner tub of the washing machine through an outer rotating shaft; the impeller and the inner barrel of the washing machine rotate in different directions and different rotating speeds during washing, or the impeller and the inner barrel of the washing machine rotate in different directions and different rotating speeds during washing; the impeller and the inner tub rotate in the same direction and at the same speed during dewatering.

In the washing machine, the washing machine is a drum-type washing machine, the inner rotor and the outer rotor of the combined type dual-rotor motor are both connected with the rotating shaft, the outer part of the rotating shaft is connected with the outer barrel of the washing machine, the inner rotor and the outer rotor rotate at the same rotating speed in the same direction when the outer barrel of the washing machine is used for washing, and the inner rotor and the outer rotor rotate at the same rotating speed in the same direction when the outer barrel of the washing machine is used for dewatering.

Compared with the prior art, the invention has the following characteristics:

(1) according to the invention, the two groups of stator windings are circumferentially distributed on the stator assembly, and each group of stator windings is positioned in a partial circumferential region of the stator assembly, so that the two groups of stator windings can completely cover the whole circumferential region, and the wire arrangement effect same as that of the conventional stator windings is formed; under the cooperation, the inner rotor and the outer rotor can be respectively driven by two groups of stator windings, so that the working efficiency of the motor is improved by a principle of magnetic field superposition; the number of pole slots of the two groups of stator windings can be adjusted according to the requirement during winding, so that the stator assembly, the inner rotor and the outer rotor can form different pole slot coordination, and the driving effect on the motor is effectively improved;

(2) through the optimization of the winding structure, two groups of stator windings can be arranged along the circumferential direction of the stator assembly, so that the occupation of a radial area of one group of stator windings can be effectively reduced compared with the arrangement structure of the existing double stator windings, and the radial space of the stator windings can be the same as the structure of the existing single stator winding;

(3) the stator core can be changed into a plurality of single tooth-shaped structures from the original annular structure through the structural matching of the stator core and the connecting layers, and the connecting and fixing among the core teeth are realized by utilizing the connecting layers; the single iron core teeth can be arranged more tightly when in punching and stock layout, thereby reducing waste materials generated in the punching process, improving the material utilization rate of the invention and further reducing the raw material cost;

(4) by optimizing the buckling structure of the stator framework and the stator core, the connection stability of the stator core after buckling can be effectively improved, so that the stator core is prevented from loosening and moving in the radial direction after buckling; through the plastic coating layer outside the stator framework, on one hand, the rigidity of the motor stator after being formed can be improved, and on the other hand, the relative position between the stator core and the stator framework can be limited, so that the roundness and the concentricity of the stator core after being formed are improved, and the driving effect of the motor stator is further improved;

(5) the two Hall sensors arranged on the stator component can respectively sense the magnetic pole positions of the inner rotor and the outer rotor, so that the positioning accuracy of the invention is improved;

therefore, the invention has the characteristics of good driving effect and small occupied space.

Drawings

Fig. 1 is a schematic structural view of a double-rotor motor;

FIG. 2 is a schematic structural view of an inner rotor and an outer rotor;

FIG. 3 is a schematic view of a stator assembly;

FIG. 4 is a diagram of a connection configuration of the stator bobbin, stator windings and stator core;

FIG. 5 is a partial block diagram of the upper stator frame;

FIG. 6 is a partial block diagram of the lower stator frame;

FIG. 7 is a schematic view of a stator core and fastening cavity connection;

fig. 8 is a connection structure view of the stator core and the stator frame at the inner side;

FIG. 9 is a view of the outer shape of the core teeth;

FIG. 10 is a schematic view showing the structure of a core tooth in example 2;

FIG. 11 is a wiring diagram of the stator winding;

fig. 12 is a drawing showing a punching pattern of the stator core in example 1.

The labels in the figures are: 1-a stator component, 2-a stator winding, 3-a power supply connecting terminal, 4-an inner rotor, 5-an outer rotor, 6-an iron core tooth, 7-a connecting layer, 8-an upper stator framework, 9-a lower stator framework, 10-a buckling cavity, 11-a Hall sensor, 601-a first tooth top, 602-a second tooth top, 603-a first buckling surface, 604-a second buckling surface, 801-a plug board and 901-a slot.

Detailed Description

The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.

Example 1. The utility model provides a combined type birotor motor, constitutes as shown in fig. 1-3, including stator module 1, is equipped with two sets of stator winding 2 on the stator module 1 respectively, and two sets of stator winding 2 are on the stator module 1 that distributes of circumference, and every group stator winding 2 is located stator module 1's part circumference region, and two sets of stator winding 2 outsides all are connected with power connection terminal 3, the inside and outside both sides of stator module 1 are equipped with inner rotor 4 and outer rotor 5 respectively.

The stator assembly 1 is provided with a plurality of stator teeth which are distributed annularly, the plurality of stator teeth are divided into a first winding part and a second winding part along the circumferential direction, the first winding part and the second winding part are respectively connected with two groups of stator windings 2, the winding diagram of the two groups of stator windings 2 is shown in fig. 11, in the diagram, U1, V1 and W1 are the winding diagram of one group of stator windings 2, U2, V2 and W2 are the winding diagram of the other group of stator windings 2, and arrows in the diagram mark the current trend in each winding.

The external connection control power of power connection terminal 3, control power passes through two sets of stator winding 2 of circuit control and moves simultaneously, perhaps control power passes through circuit switching control two sets of stator winding 2 and moves in turn (namely first set of stator winding 2 when the circuit switches on, second set of stator winding 2 keeps breaking, then first set of stator winding 2 disconnection when second set of stator winding 2 switches on), and the circuit switching frequency of control power is the millisecond level.

Stator module 1 includes stator core, and stator core is including being a plurality of iron core teeth 6 of annular distribution, and mutual separation between each iron core tooth 6, through articulamentum 7 interconnect between a plurality of iron core teeth 6.

The two ends of the iron core teeth 6 are respectively provided with a first tooth top 601 and a second tooth top 602, the iron core teeth 6, the first tooth top 601 and the second tooth top 602 are connected with each other in an I shape, the iron core teeth 6, the first tooth top 601 and the second tooth top 602 are integrally punched and formed, the connecting layer 7 is made of plastic materials or thermosetting materials, and the iron core teeth 6 are connected into a whole through integral plastic coating and form a plastic coating layer.

A first fastening surface 603 is arranged on one side of the first tooth top 601 close to the iron core tooth 6, a second fastening surface 604 is arranged on one side of the second tooth top 602 close to the iron core tooth 6, and the first fastening surface 603 and the second fastening surface 604 are symmetrically arranged on the left side and the right side of the iron core tooth 6; the width of the first tooth top 601 is greater than that of the second tooth top 602, and the width of the second tooth top 602 is greater than the sum of the widths of the first fastening surfaces 201 on both sides.

The connecting layer 7 is provided with a mounting groove, two Hall sensors 11 are arranged in the mounting groove, and the two Hall sensors 11 are respectively used for sensing the inner rotor 4 and the outer rotor 5.

The working principle of the invention is as follows: when the stator winding 2 of the invention is wound, each group of stator winding 2 respectively occupies partial stator teeth of the stator assembly 1 in the circumferential direction. Under the structure, the stator tooth structure arranged in the annular shape can be simultaneously used for winding the two groups of stator windings 2, namely the two groups of stator windings 2 share one set of stator tooth, on one hand, compared with the stator assembly 1 of the existing single stator winding, the radial size of the stator assembly is not increased, on the other hand, the two groups of stator windings 2 are used for respectively driving the inner rotor 4 and the outer rotor 5 independently, so that the stator tooth structure can adjust the pole slot matching between the two groups of stator and rotor by changing the winding structure, and different driving effects are generated.

Stator module 1 adds man-hour, through the split type iron core tooth 6 of punching press formation earlier, recycles the articulamentum 7 and moulds each iron core tooth 6 package and form stator module 1, and this structure makes iron core tooth 6 become the I-shaped structure by original loop configuration to make stator core can effectively shorten the interval between each iron core tooth 6 when the punching press stock layout, improve the utilization ratio of counterpunching material and reduce the production of waste material, reach reduce cost's effect. On this basis, by optimizing the widths of the first tooth top 601 and the second tooth top 602, the arrangement distance between adjacent core teeth 6 can be further shortened by the staggered arrangement structure from end to end when the stator core performs the stock layout, and the punching stock layout effect is as shown in fig. 12, that is, the first tooth top 601 and the second tooth top 602 are overlapped with each other along the longitudinal direction during the stock layout, so that the material utilization rate of the invention is further improved and the material cost is reduced.

Example 2. The combined type dual-rotor motor comprises a stator assembly 1, wherein two groups of stator windings 2 are arranged on the stator assembly 1 respectively, the two groups of stator windings 2 are distributed on the stator assembly 1 in the circumferential direction, each group of stator windings 2 is located in a partial circumferential region of the stator assembly 1, the two groups of stator windings 2 are connected with power supply connecting terminals 3 on the outside, and an inner rotor 4 and an outer rotor 5 are arranged on the inner side and the outer side of the stator assembly 1 respectively.

Stator module 1 is last to be the annular distribution and has a plurality of stator teeth, and a plurality of stator teeth divide into first wire winding portion and second wire winding portion along circumference, and two sets of stator winding 2 are connected respectively to first wire winding portion and second wire winding portion.

The external part of the power supply connecting terminal 3 is connected with a control power supply, and the control power supply controls the two groups of stator windings 2 to be switched on and off at different time through circuit switching; the connection and disconnection time of the two groups of stator windings 2 are arranged alternately, and the circuit switching frequency of the control power supply is in millisecond level.

Stator module 1 includes stator core, and stator core is including being a plurality of iron core teeth 6 of annular distribution, and mutual separation between each iron core tooth 6, through articulamentum 7 interconnect between a plurality of iron core teeth 6.

The two ends of the iron core tooth 6 are respectively provided with a first tooth top 601 and a second tooth top 602, the iron core tooth 6, the first tooth top 601 and the second tooth top 602 are of split structures, and the iron core tooth 6, the first tooth top 601 and the second tooth top 602 are connected with each other through a concave-convex buckling structure after being formed separately.

The connecting layer 7 is a stator framework, the stator framework comprises an upper stator framework 8 and a lower stator framework 9 which are detachably connected, and a buckling cavity 10 for connecting a stator core is formed between the upper stator framework 8 and the lower stator framework 9; the first tooth top 601 and the second tooth top 602 respectively extend to the outer side of the buckling cavity 10 and are buckled with the buckling cavity 10; and a plastic coating layer is arranged on the outer side of the stator framework.

An inserting plate 801 and an inserting groove 901 which are positioned at the outer side of the stator core are respectively arranged on the upper stator framework 8 and the lower stator framework 9, and the upper stator framework 8 and the lower stator framework 9 are mutually buckled through the inserting plate 801 and the inserting groove 901.

The connecting layer 7 is provided with a mounting groove, two Hall sensors 11 are arranged in the mounting groove, and the two Hall sensors 11 are respectively used for sensing the inner rotor 4 and the outer rotor 5.

This embodiment is through connecting iron core tooth 6 with first addendum 601 and second addendum 602 lock for first addendum 601, second addendum 602 and iron core tooth 6 can be respectively alone stamping forming, thereby further improve the compactness of arranging of each stamping workpiece, improve the utilization ratio to stamping material and reduce the production of punching press waste. Through the lock to stator core by last stator skeleton 8 and lower stator skeleton 9, can also improve stator core's connection stability and positioning effect, prevent stator core's drunkenness and throw off. The layer is moulded through the package of cladding in the stator skeleton outside, can improve the holistic rigidity of stator module 1 on the one hand, and on the other hand can also carry on spacingly to the radial position of each iron core tooth 6 to improve stator core circularity and concentricity after the package is moulded.

Example 3. A pulsator washing machine comprises a double-rotor motor, wherein an inner rotor of the double-rotor motor is connected with a washing machine pulsator through an inner rotating shaft, and an outer rotor of a combined double-rotor motor is connected with an inner washing machine barrel through an outer rotating shaft; the impeller and the inner barrel of the washing machine rotate in different directions and different rotating speeds during washing, or the impeller and the inner barrel of the washing machine rotate in different directions and different rotating speeds during washing; the impeller and the inner tub rotate in the same direction and at the same speed during dewatering.

Example 4. A drum-type washing machine comprises the double-rotor motor, wherein an inner rotor and an outer rotor of the double-rotor motor are both connected with a rotating shaft, the outer part of the rotating shaft is connected with an outer drum of the washing machine, the inner rotor and the outer rotor rotate at the same rotating speed in the same direction when the outer drum of the washing machine is used for washing, and the inner rotor and the outer rotor rotate at the same rotating speed in the same direction when the outer drum of the washing machine is used for dewatering.

Embodiments 3 and 4 further optimize the application of the dual-rotor motor of the present application to a pulsator washing machine and a drum washing machine, and the washing machine can adjust the rotation direction and the rotation speed between the inner rotor and the outer rotor according to different working conditions by limiting the structure of the dual-rotor motor, thereby further improving the washing and dewatering effects of the washing machine.