阅读说明：本技术 风机 (Fan blower ) 是由 吴迪 武谷雨 陈金涛 龚黎明 诸自强 于 2018-07-03 设计创作，主要内容包括：本发明提供了一种风机,包括：电机、第一转轴、第二转轴、第一扇片和第二扇片,电机包括定子、第一转子和第二转子,定子、第一转子以及第二转子相互嵌套且可相互旋转,第一转子和第二转子相互独立旋转,定子包括定子铁芯及绕制在定子铁芯上的定子绕组,第一转子和第二转子分别用于驱动安装有第一扇片的第一转轴和安装有第二扇片的第二转轴同轴心旋转；特别地,第一转子为磁阻转子,第二转子为永磁转子,且定子、磁阻转子以及永磁转子依次由内向外或由外向内嵌套。本发明提供的风机,采用无机械差速、无离合的方式实现了双轴双动力旋转,系统集成度高、功率密度大、能耗低、可靠性高、噪音小。(The invention provides a fan, comprising: the motor comprises a stator, a first rotor and a second rotor, the stator, the first rotor and the second rotor are mutually nested and can mutually rotate, the first rotor and the second rotor mutually independently rotate, the stator comprises a stator core and a stator winding wound on the stator core, and the first rotor and the second rotor are respectively used for driving the first rotating shaft provided with the first fan and the second rotating shaft provided with the second fan to coaxially rotate; particularly, the first rotor is a reluctance rotor, the second rotor is a permanent magnet rotor, and the stator, the reluctance rotor and the permanent magnet rotor are sequentially nested from inside to outside or from outside to inside. The fan provided by the invention realizes double-shaft double-power rotation by adopting a mode without mechanical differential and clutch, and has the advantages of high system integration level, high power density, low energy consumption, high reliability and low noise.)

1. A fan, comprising:

the motor comprises a stator, a first rotor and a second rotor, wherein the stator, the first rotor and the second rotor are mutually nested and can mutually rotate, every two adjacent stators, the first rotor and the second rotor are separated by an air gap, the first rotor and the second rotor mutually independently rotate, and the stator comprises: the stator winding is wound on the stator core; first pivot and second pivot are followed respectively the axial both sides of motor are stretched out, perhaps the second pivot passes the hollow department in middle part of first pivot stretches out, first rotor with in the second rotor one with the relative fixed connection of first pivot is used for the drive first pivot is rotatory, just first rotor with in the second rotor another with the relative fixed connection of second pivot is used for the drive the second pivot is rotatory, install in the first pivot first fan, install in the second pivot the second fan, first pivot the second pivot first fan with the second fan is rotatory with the axle center.

2. The fan of claim 1,

the first rotor is a reluctance rotor, the second rotor is a permanent magnet rotor, and the stator, the reluctance rotor and the permanent magnet rotor are sequentially nested from inside to outside or from outside to inside.

3. The fan of claim 1,

the stator comprises one set of stator winding or two sets of stator windings.

4. The fan of claim 2,

the stator core comprises a stator shell, and the stator shell is sleeved on the outer side of the stator core.

5. The fan of claim 2,

the reluctance rotor comprises a magnetic reluctance iron core and non-magnetic spacer blocks, wherein the magnetic reluctance iron core and the spacer blocks are alternately arranged to form a ring shape.

6. The fan of claim 2,

the permanent magnet rotor comprises a permanent magnet core and magnetic steel, wherein the magnetic steel comprises a plurality of permanent magnet cores arranged at intervals in the circumferential direction, and the magnetic steel is opposite in polarity.

7. The fan according to claim 2, 4, 5 or 6,

the stator comprises a set of stator windings, the reluctance rotor comprises reluctance cores with magnetic conductivity and spacing blocks with non-magnetic conductivity, the reluctance cores and the spacing blocks are alternately arranged to form an annular shape, the number of the reluctance cores is pr, and the winding span of the stator windings is y_1sAnd form a number of pole pairs of p_sA rotating magnetic field, the permanent magnet rotor forms a pole pair number p_fThe permanent magnetic field of (a), wherein:

p_r＝|p_s±p_f|；p_f≠p_s。

8. the fan of claim 7,

the current injection frequency of the stator winding satisfies: omega_s＝p_rΩ_r-p_fΩ_fWherein ω is_sFor the control frequency, omega, of the stator winding_rAnd Ω_fThe mechanical rotation speeds of the reluctance rotor and the permanent magnet rotor respectively;

the current injection phase angle of the stator winding satisfies: theta_s＝-p_rθ_r+p_fθ_fWherein theta_sBeing the phase angle, theta, of the axis of the injected current of the stator winding_fAnd theta_rThe mechanical angle difference of the alignment positions of the permanent magnet rotor and the reluctance rotor with the d axis is respectively.

9. The fan according to claim 2, 4, 5 or 6,

the stator comprises two sets of stator windings, the reluctance rotor comprises reluctance cores with magnetic conductivity and spacing blocks with non-magnetic conductivity, the reluctance cores and the spacing blocks are alternately arranged in an annular shape, and the number of the reluctance cores is p_rThe winding span of the two sets of stator windings is y_1sAnd y_1adAnd respectively form a number of pole pairs of p_sAnd p_adThe permanent magnet rotor forms a pole pair number p_fThe permanent magnetic field of (a), wherein:

p_r＝|p_s±p_f|；p_ad＝p_f≠p_s；y_1s≠y_1ad。

10. the fan as recited in claim 9,

the current injection frequencies of the two sets of stator windings respectively meet the following conditions: omega_s＝p_rΩ_r-pfΩ_f；ω_ad＝p_fΩ_fWherein ω is_sAnd ω_adControl frequency, omega, of two sets of windings respectively_rAnd Ω_fThe mechanical rotation speeds of the reluctance rotor and the permanent magnet rotor respectively;

the current injection phase angles of the two sets of stator windings respectively meet the following conditions: theta_s＝-p_rθ_r+p_fθ_f；θ_ad＝-p_fθ_fWherein theta_sAnd theta_adThe phase angle, theta, of the axis of the injected current for each of the two sets of windings_fAnd theta_rThe mechanical angle difference of the alignment positions of the permanent magnet rotor and the reluctance rotor with the d axis is respectively.

11. The fan of claim 1,

the stator is arranged between the first rotor and the second rotor and comprises two sets of stator windings, the two sets of stator windings are wound on the stator core, and the two sets of stator windings respectively correspond to the first rotor and the second rotor to respectively and independently drive the first rotor and the second rotor to rotate.

12. The fan according to any one of claims 1 to 6 or 11,

the first fan blade and the second fan blade comprise at least one fan blade; or

The first fan blade and/or the second fan blade are/is a fan cover, an air duct or an impeller.

Technical Field

The invention relates to the technical field of household appliances, in particular to a fan.

Background

Disclosure of Invention

The present invention is directed to solving at least one of the above problems.

Therefore, the invention aims to provide a fan.

In order to achieve the above object, a technical solution of the present invention provides a fan, including: the motor comprises a stator, a first rotor and a second rotor, wherein the stator, the first rotor and the second rotor are mutually nested and can mutually rotate, every two adjacent stators, the first rotor and the second rotor are separated by an air gap, the first rotor and the second rotor mutually independently rotate, and the stator comprises: the stator winding is wound on the stator core; first pivot and second pivot are followed respectively the axial both sides of motor are stretched out, perhaps the second pivot passes the hollow department in middle part of first pivot stretches out, first rotor with in the second rotor one with the relative fixed connection of first pivot is used for the drive first pivot is rotatory, just first rotor with in the second rotor another with the relative fixed connection of second pivot is used for the drive the second pivot is rotatory, install in the first pivot first fan, install in the second pivot the second fan, first pivot the second pivot first fan with the second fan is rotatory with the axle center.

The fan provided by the technical scheme of the invention adopts a double-shaft double-power rotating structure, the first rotor and the second rotor respectively and independently drive the first rotating shaft and the second rotating shaft to rotate, the first rotating shaft drives the first fan blade to rotate, the second rotating shaft drives the second fan blade to rotate, the first fan blade and the second fan blade can rotate at different or same rotating speeds and in different or same directions, the system integration level is high, the power density is high, the energy consumption is low, the reliability is high, the noise is low, the weight and the cost of the motor are low, and the reliability is greatly improved due to the reduction of mechanical parts; meanwhile, compared with the existing scheme that two ends of a shaft of a single motor extend out to form two side shafts, but the single motor can only drive the fan blades to rotate at the same rotating speed or in the same direction, the two fan blades can rotate at different rotating speeds and/or different rotating directions, so that the true double-shaft double-power or double-freedom-degree control is realized; compared with a single fan and double fans, the double-fan motor has the advantages that the requirement on the rotating speed of the fan can be reduced, so that the performance requirement of the motor is reduced, and meanwhile, the motor runs at a relatively low speed, so that the double-fan motor is beneficial to the service life and the stable structure of the motor; meanwhile, compared with the existing scheme that two or more motors output double rotating speeds or multiple rotating speeds in series in the axial direction, the axial length, the weight and the cost of the motor can be reduced.

In addition, the fan provided in the above technical solution of the present invention may further have the following additional technical features:

in the above technical solution, preferably, the first rotor is a reluctance rotor, the second rotor is a permanent magnet rotor, and the stator, the reluctance rotor and the permanent magnet rotor are sequentially nested from inside to outside or from outside to inside.

The double-shaft double-power motor adopts a reluctance modulation effect to generate driving torque, the torque density is higher than that of a conventional permanent magnet motor, the power density of the system is further increased, and the energy consumption is reduced.

In the above technical solution, preferably, the stator includes one set of stator winding or two sets of stator windings.

Specifically, one set of stator winding can be used for driving the reluctance rotor and the permanent magnet rotor to rotate independently, and two sets of stator windings can be used for driving the reluctance rotor and the permanent magnet rotor to rotate independently; under the condition that the stator comprises two sets of stator windings, the number of phases of the two sets of stator windings can be the same or different, so that the number of phases of the two sets of stator windings can be selected according to actual needs, and the practicability of the stator is improved.

In the above technical solution, preferably, the stator core includes a stator casing, and the stator casing is sleeved outside the stator core.

The stator casing can protect and insulate the stator core, so that the safety and reliability of the double-shaft double-power motor in the running process are improved.

In the above technical solution, preferably, the reluctance rotor includes a magnetic reluctance core and a non-magnetic spacer, and the reluctance core and the spacer are alternately arranged in an annular shape.

Therefore, the structure of the reluctance rotor can be simplified, and the processing and the manufacturing of the reluctance rotor are convenient.

In the above technical solution, preferably, the permanent magnet rotor includes a permanent magnet core and magnetic steel, the magnetic steel includes a plurality of edges of the permanent magnet core arranged at intervals in the circumferential direction, and two adjacent magnetic steels have opposite polarities.

Therefore, the permanent magnet rotor and the stator can rotate through electromagnetic induction.

In the above technical solution, preferably, the stator includes a set of stator winding, the reluctance rotor includes a reluctance core with magnetic conductivity and a spacer block with non-magnetic conductivity, the reluctance core and the spacer block are alternately arranged in a ring shape, and the number of the reluctance cores is p_rThe winding span of the stator winding is y_1sAnd form a number of pole pairs of p_sA rotating magnetic field, the permanent magnet rotor forms a pole pair number p_fThe permanent magnetic field of (a), wherein: p is a radical of_r＝|p_s±p_f|；p_f≠p_s。

In the above technical solution, preferably, the current injection frequency of the stator winding satisfies: omega_s＝p_rΩ_r-p_fΩ_fWherein ω is_sFor the control frequency, omega, of the stator winding_rAnd Ω_fThe mechanical rotation speeds of the reluctance rotor and the permanent magnet rotor respectively; the current injection phase angle of the stator winding satisfies: theta_s＝-p_rθ_r+p_fθ_fWherein theta_sBeing the phase angle, theta, of the axis of the injected current of the stator winding_fAnd theta_rThe mechanical angle difference of the alignment positions of the permanent magnet rotor and the reluctance rotor with the d axis is respectively.

In the above technical solution, preferably, the stator includes two sets of stator windings, and the reluctance rotor includes a conductorThe magnetic reluctance motor comprises magnetic reluctance cores and non-magnetic-conductive spacing blocks, wherein the reluctance cores and the spacing blocks are alternately arranged in an annular shape, and the number of the reluctance cores is p_rThe winding span of the two sets of stator windings is y_1sAnd y_1adAnd respectively form a number of pole pairs of p_sAnd p_adThe permanent magnet rotor forms a pole pair number p_fThe permanent magnetic field of (a), wherein: p is a radical of_r＝|p_s±p_f|；p_ad＝p_f≠p_s；y_1s≠y_1ad。

In the above technical solution, preferably, the current injection frequencies of the two sets of stator windings respectively satisfy: omega_s＝p_rΩ_r-p_fΩ_f；ω_ad＝p_fΩ_fWherein ω is_sAnd ω_adControl frequency, omega, of two sets of windings respectively_rAnd Ω_fThe mechanical rotation speeds of the reluctance rotor and the permanent magnet rotor respectively; the current injection phase angles of the two sets of stator windings respectively meet the following conditions: theta_s＝-p_rθ_r+p_fθ_f；θ_ad＝-p_fθ_fWherein theta_sAnd theta_adThe phase angle, theta, of the axis of the injected current for each of the two sets of windings_fAnd theta_rThe mechanical angle difference of the alignment positions of the permanent magnet rotor and the reluctance rotor with the d axis is respectively.

In the above technical solution, preferably, the stator is disposed between the first rotor and the second rotor, the stator includes two sets of stator windings, the two sets of stator windings are wound on the stator core, and the two sets of stator windings respectively correspond to the first rotor and the second rotor to respectively and independently drive the first rotor and the second rotor to rotate.

The first rotor and the second rotor are respectively and independently driven to rotate by the two sets of stator windings, so that a first rotating shaft fixedly connected with the first rotor and a second rotating shaft fixedly connected with the second rotor are independently rotated, and the first fan blade and the second fan blade can rotate at different or same rotating speeds in different or same directions.

In any of the above technical solutions, preferably, the first fan blade and the second fan blade each include at least one fan blade; or the first fan blade and/or the second fan blade are/is a fan cover, an air duct or an impeller.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a blower fan according to a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a motor of a blower in accordance with one embodiment of the present invention;

FIG. 3 is a schematic structural view of a fan according to a second embodiment of the present invention;

FIG. 4 is a schematic structural view of a blower fan according to a third embodiment of the present invention;

FIG. 5 is a schematic structural view of a blower fan according to a fourth embodiment of the present invention;

fig. 6 is a schematic structural diagram of a double-shaft double-power motor of a fan according to an embodiment of the invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 6 is:

a fan 1;

a first fan blade 11, a second fan blade 12, a first rotating shaft 13 and a second rotating shaft 14;

a motor 10, a stator 101, a first rotor 102, a second rotor 103;

a stator core 1011, a stator winding 1012;

the double-shaft double-power motor 21, the stator 211, the reluctance rotor 212 and the permanent magnet rotor 213;

stator core 2111, stator winding 2112, stator casing 2113, reluctance core 2121, spacer 2122, magnetic steel 2131 and permanent magnet core 2132;

a first transmission shaft 31 and a second transmission shaft 32.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A wind turbine according to some embodiments of the present invention is described below with reference to fig. 1 to 6.

As shown in fig. 1 to 6, a wind turbine 1 according to some embodiments of the present invention includes: a motor (such as the motor 10 in fig. 1 and 2, and the dual-shaft dual-power motor 21 in fig. 3 to 6), a first fan blade 11, a second fan blade 12, a first rotating shaft 13, and a second rotating shaft 14.

Specifically, the motor includes a stator (e.g., the stator 101 in fig. 1 and 2, the stator 211 in fig. 3 to 6), a first rotor (e.g., the first rotor 102 in fig. 1 and 2, the reluctance rotor 212 in fig. 3 to 6), and a second rotor (e.g., the second rotor 103 in fig. 1 and 2, the permanent magnet rotor 213 in fig. 3 to 6), the stator, the first rotor, and the second rotor being nested and rotatable with each other, and each adjacent two of the stator, the first rotor, and the second rotor being spaced by an air gap, the stator including: stator core and stator winding, stator winding is around on stator core, first pivot 13 and second pivot 14 stretch out from the axial both sides of motor respectively, perhaps second pivot 14 passes the middle part hollow of first pivot 13 and stretches out, one in first rotor and the second rotor and first pivot 13 relatively fixed connection be used for driving first pivot 13 rotatory, and another in first rotor and the second rotor and second pivot 14 relatively fixed connection be used for driving second pivot 14 rotatory, install first fan blade 11 on the first pivot 13, install second fan blade 12 on the second pivot 14, first pivot 13, second pivot 14, first fan blade 11 and second fan blade 12 are rotatory with the axle center.

In some embodiments of the present invention, as shown in fig. 3 to 6, the electric machine 10 is a dual-shaft dual-power electric machine 21, the dual-shaft dual-power electric machine 21 includes an annular stator 211, a reluctance rotor 212 and a permanent magnet rotor 213, where the stator 211, the reluctance rotor 212 and the permanent magnet rotor 213 are nested from inside to outside or from outside to inside in sequence (i.e., a first rotor of the electric machine is the reluctance rotor 212, a second rotor of the electric machine is the permanent magnet rotor 213, and the stator, the first rotor and the second rotor are nested from inside to outside or from outside to inside in sequence), that is, the reluctance rotor 212 is always located between the stator 211 and the permanent magnet rotor 213, the stator 211 may be located outside the reluctance rotor 212 and the permanent magnet rotor 213 is located inside the reluctance rotor 212, or the stator 211 is located inside the reluctance rotor 212 and the permanent; and the stator 211, the reluctance rotor 212 and the permanent magnet rotor 213 can rotate mutually, and every two adjacent ones of the stator 211, the reluctance rotor 212 and the permanent magnet rotor 213 are spaced by an air gap, in other words, the stator 211 and the reluctance rotor 212 have an air gap spacing therebetween, and the reluctance rotor 212 and the permanent magnet rotor 213 also have an air gap spacing therebetween, so as to ensure the rotational independence among the stator 211, the reluctance rotor 212 and the permanent magnet rotor 213.

Further, as shown in fig. 3, the stator 211 includes: a stator core 2111 and a stator winding 2112, wherein the stator core is made of a high-permeability material, the stator winding 2112 is wound on the stator core, as shown in fig. 1 and 2, one of the reluctance rotor 212 and the permanent magnet rotor 213 is relatively fixedly connected with the first rotating shaft 13 for driving the first rotating shaft 13 to rotate, and the other of the reluctance rotor 212 and the permanent magnet rotor 213 is relatively fixedly connected with the second rotating shaft 14 for driving the second rotating shaft 14 to rotate; and first pivot 13 and second pivot 14 stretch out from the axial both sides of biax double-power motor 21 respectively, perhaps second pivot 14 passes the middle part hollow department of first pivot 13 and stretches out, installs first fan blade 11 on the first pivot 13, installs second fan blade 12 on the second pivot 14, and magnetic resistance rotor 212 and permanent magnet rotor 213 drive first pivot 13 and second pivot 14 respectively independently and rotate to realize first fan blade 11 and the coaxial rotation of second fan blade 12.

That is, when the reluctance rotor 212 is fixedly connected to the first rotating shaft 13 through the first transmission shaft 31 (or the second transmission shaft 34) and drives the first rotating shaft 13 to rotate, and then drives the first fan blade 11 to rotate, the permanent magnet rotor 213 is fixedly connected to the second rotating shaft 14 through the second transmission shaft 34 (or the first transmission shaft 31) and drives the second rotating shaft 14 to rotate, and then drives the second fan blade 12 to rotate, and the first fan blade 11 and the second fan blade 12 rotate coaxially; when the reluctance rotor 212 is fixedly connected to the second rotating shaft 14 through the first transmission shaft 31 (or the second transmission shaft 34) and drives the second rotating shaft 14 to rotate, and further drives the second fan 12 to rotate, the permanent magnet rotor 213 is fixedly connected to the first rotating shaft 13 through the second transmission shaft 34 (or the first transmission shaft 31) and drives the first rotating shaft 13 to rotate, and further drives the first fan 11 to rotate, and the first fan 11 and the second fan 12 rotate coaxially.

In one embodiment, as shown in fig. 3, the first fan blade 11 and the second fan blade 12 are located on the same side of the dual-shaft dual-power motor 21, the second rotating shaft 14 extends through the hollow center of the first rotating shaft 13, the stator 211 is located inside the reluctance rotor 212, the stator 211, the reluctance rotor 212 and the permanent magnet rotor 213 are sequentially nested from inside to outside, the reluctance rotor 212 is fixedly connected to the second rotating shaft 14 through the second transmission shaft 32 and drives the second rotating shaft 14 to rotate, and further drives the second fan blade 12 to rotate, the permanent magnet rotor 213 is fixedly connected to the first rotating shaft 13 through the first transmission shaft 31 and drives the first rotating shaft 13 to rotate, and further drives the first fan blade 11 to rotate, and the first fan blade 11 and the second fan blade 12 rotate coaxially.

Certainly, for the scheme that the first fan blades 11 and the second fan blades 12 are located on the same side of the dual-shaft dual-power motor 21, and the second rotating shaft 14 extends through the hollow center of the first rotating shaft 13, the stator 211 may also be located outside the reluctance rotor 212, the stator 211, the reluctance rotor 212, and the permanent magnet rotor 213 are sequentially nested from outside to inside, one of the reluctance rotor 212 and the permanent magnet rotor 213 is relatively fixedly connected to the first rotating shaft 13 for driving the first rotating shaft 13 to rotate, and the other of the reluctance rotor 212 and the permanent magnet rotor 213 is relatively fixedly connected to the second rotating shaft 14 for driving the second rotating shaft 14 to rotate.

In another embodiment, as shown in fig. 4, the first rotating shaft 13 and the second rotating shaft 14 respectively extend out from two axial sides of the dual-shaft dual-power motor 21, the stator 211 is located outside the reluctance rotor 212, the stator 211, the reluctance rotor 212 and the permanent magnet rotor 213 are sequentially nested from outside to inside, the reluctance rotor 212 is fixedly connected to the second rotating shaft 14 through the first transmission shaft 31 and drives the second rotating shaft 14 to rotate, and then drives the second fan 12 to rotate, the permanent magnet rotor 213 is directly fixedly connected to the first rotating shaft 13 and drives the first rotating shaft 13 to rotate, and then drives the first fan 11 to rotate, and the first fan 11 and the second fan 12 rotate coaxially.

In another embodiment, as shown in fig. 5, the first rotating shaft 13 and the second rotating shaft 14 respectively extend from two axial sides of the dual-shaft dual-power motor 21, the stator 211 is located inside the reluctance rotor 212, the stator 211, the reluctance rotor 212 and the permanent magnet rotor 213 are sequentially nested from inside to outside, the reluctance rotor 212 is fixedly connected to the first rotating shaft 13 through the first transmission shaft 31 and drives the first rotating shaft 13 to rotate, and then drives the first fan blade 11 to rotate, the permanent magnet rotor 213 is fixedly connected to the second rotating shaft 14 through the second transmission shaft 32 and drives the second rotating shaft 14 to rotate, and then drives the second fan blade 12 to rotate, and the first fan blade 11 and the second fan blade 12 rotate coaxially.

According to the fan 1, double-power food crushing is realized in a mode without mechanical differential and clutch, the system integration level is high, the energy consumption is low, and the reliability is greatly improved due to the reduction of mechanical parts. In addition, the double-shaft double-power motor 21 adopts a reluctance modulation effect to generate driving torque, the torque density is higher than that of a conventional permanent magnet motor, the power density of the system is further increased, and the energy consumption is reduced.

Further, the stator 211 may include one set of stator windings 2112 or two sets of stator windings 2112.

Specifically, the number of phases of the two sets of stator windings 2112 is the same or different, so that the number of phases of the two sets of stator windings 2112 can be selected according to actual needs, and the practicability of the stator 211 is improved.

Advantageously, as shown in fig. 6, when the stator 211 is located at the outer side of the reluctance rotor 212, the stator core 2111 includes a stator housing 2113, the stator housing 2113 is sleeved at the outer side of the stator core 2111, and the stator housing 2113 can protect and insulate the stator core 2111, thereby improving the safety and reliability of the dual-shaft dual-power motor 21 during operation.

In some embodiments of the present invention, as shown in fig. 6, the reluctance rotor 212 includes a magnetic conductive reluctance core 2121 and a non-magnetic conductive spacer 2122, and the reluctance core 2121 and the spacer 2122 are alternately arranged in a ring shape, so that the structure of the reluctance rotor 212 may be simplified and the manufacturing process may be facilitated.

In some embodiments of the present invention, as shown in fig. 6, the permanent magnet rotor 213 includes a permanent magnet core 2132 and a magnetic steel 2131, where the magnetic steel 2131 may include a plurality of magnetic steels 2131, and the magnetic steels 2131 are arranged at intervals along a circumferential direction of the permanent magnet core 2132, and polarities of two adjacent magnetic steels 2131 are opposite, thereby facilitating the permanent magnet rotor 213 and the stator 211 to rotate the permanent magnet rotor 213 through electromagnetic induction.

In some embodiments of the present invention, as shown in fig. 6, the stator 211 comprises a set of stator windings 2112, the reluctance rotor 212 comprises a magnetic reluctance core 2121 and a non-magnetic spacer block 2122, the reluctance core 2121 and the spacer block 2122 are alternately arranged in a ring shape, and the number of the reluctance cores 2121 is p_rThe winding span of the stator winding 2112 is y_1sAnd form a number of pole pairs of p_sThe permanent magnet rotor 213 forms a pole pair number p by rotating the magnetic field_fThe permanent magnetic field of (a), wherein: p is a radical of_r＝|p_s±p_f|；p_f≠p_s。

Further, the current injection frequency of the stator winding 2112 satisfies: omega_s＝p_rΩ_r-p_fΩ_fWherein ω is_sFor the control frequency, omega, of the stator windings 2112_rAnd Ω_fThe mechanical rotation speeds of the reluctance rotor 212 and the permanent magnet rotor 213, respectively, the current injection phase angle of the stator winding 2112 satisfies: theta_s＝-p_rθ_r+p_fθ_fWherein theta_sIs the phase angle, θ, of the axis of the injected current of the stator winding 2112_fAnd theta_rThe mechanical angle difference between the aligned positions of the permanent magnet rotor 213 and the reluctance rotor 212 with respect to the d-axis, respectively.

In other embodiments of the present inventionThe stator 211 includes two sets of stator windings 2112, which are respectively referred to as a first winding and a second winding, the reluctance rotor 212 includes a magnetic reluctance core 2121 and a non-magnetic spacer block 2122, the reluctance core 2121 and the spacer block 2122 are alternately arranged in a ring shape, and the number of the reluctance cores 2121 is p_rThe winding span of the first stator winding is y_1sAnd form a number of pole pairs of p_sThe winding span of the second stator winding is y_1adAnd form a number of pole pairs of p_adThe permanent magnet rotor 213 forms a pole pair number p_fThe permanent magnetic field of (a), wherein: p is a radical of_r＝|p_s±p_f|；p_ad＝p_f≠p_s；y_1s≠y_1ad。

Further, the current injection frequencies of the first winding and the second winding respectively satisfy: omega_s＝p_rΩ_r-p_fΩ_f；ω_ad＝p_fΩ_fWherein ω is_sAnd ω_adControl frequency, omega, of the first and second windings, respectively_rAnd Ω_fThe mechanical rotational speeds of the reluctance rotor 212 and the permanent magnet rotor 213, respectively; the current injection phase angles of the first winding and the second winding respectively satisfy the following conditions: theta_s＝-p_rθ_r+p_fθ_f；θ_ad＝-p_fθ_fWherein theta_sAnd theta_adPhase angle of the axis of the injected current, theta, of the first and second windings, respectively_fAnd theta_rThe mechanical angle difference between the aligned positions of the permanent magnet rotor 213 and the reluctance rotor 212 with respect to the d-axis, respectively, thereby facilitating the decoupling control of the reluctance rotor 212 and the permanent magnet rotor 213.

In other embodiments of the present invention, as shown in fig. 1 and 2, the motor 10 includes a stator 101, a first rotor 102, and a second rotor 103, the stator 101, the first rotor 102, and the second rotor 103 are nested and rotatable with each other, and each adjacent two of the stator 101, the first rotor 102, and the second rotor 103 are spaced by an air gap, the stator 101 includes: the motor comprises a stator core 1011 and a stator winding 1012, the stator winding 1012 is wound on the stator core 1011, a first rotating shaft 13 and a second rotating shaft 14 respectively extend out from two axial sides of the motor 10, or the second rotating shaft 14 extends out through a hollow part in the middle of the first rotating shaft 13, one of the first rotor 102 and the second rotor 103 is relatively and fixedly connected with the first rotating shaft 13 and is used for driving the first rotating shaft 13 to rotate, the other one of the first rotor 102 and the second rotor 103 is relatively and fixedly connected with the second rotating shaft 14 and is used for driving the second rotating shaft 14 to rotate, a first fan blade 11 is installed on the first rotating shaft 13, a second fan blade 12 is installed on the second rotating shaft 14, and the first rotating shaft 13, the second rotating shaft 14, the first fan blade 11 and the second fan blade 12 rotate coaxially.

In one embodiment, as shown in fig. 1 and 2, the stator 101 is disposed between the first rotor 102 and the second rotor 103, the stator 101 includes a stator core 1011 and two sets of stator windings 1012, the two sets of stator windings 1012 are wound around the stator core 1011, and the two sets of stator windings 1012 respectively correspond to the first rotor 102 and the second rotor 103 to respectively and independently drive the first rotor 102 and the second rotor 103 to rotate.

The first rotor 102 and the second rotor 103 are respectively and independently driven to rotate by two sets of stator windings 1012, so that the first rotating shaft 13 fixedly connected with the first rotor 102 and the second rotating shaft 14 fixedly connected with the second rotor 103 can independently rotate, and the first fan blade 11 and the second fan blade 12 can rotate at different or same rotating speeds and in different or same directions.

In a specific embodiment, as shown in fig. 1, the first rotating shaft 13 and the second rotating shaft 14 respectively extend from two axial sides of the motor 10, the stator 101 is located between the first rotor 102 and the second rotor 103, the first rotor 102, the stator 101, and the second rotor 103 are sequentially nested from inside to outside, the first rotor 102 is directly and fixedly connected to the first rotating shaft 13 and drives the first rotating shaft 13 to rotate, and then drives the first fan blade 11 to rotate, the second rotor 103 is fixedly connected to the second rotating shaft 14 through the first transmission shaft 31 and drives the second rotating shaft 14 to rotate, and then drives the second fan blade 12 to rotate, and the first fan blade 11 and the second fan blade 12 rotate coaxially.

In some embodiments of the invention, the first fan blade 11 and the second fan blade 12 each comprise at least one fan blade; or the first fan blade 11 and/or the second fan blade 12 are a fan cover or an air duct or an impeller.

The fan 1 of the invention adopts a double-rotating-shaft double-power rotating structure, the first rotating shaft 13 drives the first fan blade 11 to rotate, the second rotating shaft 14 drives the second fan blade 12 to rotate, the first fan blade 11 and the second fan blade 12 can rotate at different or same rotating speeds and in different or same directions, and the invention has the advantages of high system integration level, large power density, low energy consumption, high reliability, low noise, low motor weight and low cost.