阅读说明：本技术 料理机 (Food processor ) 是由 武谷雨 吴迪 龚黎明 于 2018-07-03 设计创作，主要内容包括：本发明提供了一种料理机,包括：外桶、内桶、底座、双轴双动力电机、第一转轴、第二转轴、刀具,安装于底座内部的双轴双动力电机包括定子、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相互可旋转,第一转子和第二转子相互独立旋转,定子包括定子铁芯、绕制在定子铁芯上的定子绕组,其中第一转子和第二转子分别用于驱动与内桶底部固定连接的第二转轴和安装有刀具的第一转轴相对反向旋转,从而充分粉碎食物,提高粉碎效率和粉碎效果。本发明提供的料理机,采用无机械差速、无离合的方式实现了双动力粉碎食物,降低了杯座的轴向高度、重量和成本,系统集成度高、功率密度大、能耗低、可靠性高。(The invention provides a food processor, comprising: outer bucket, interior bucket, a pedestal, the double dynamical motor of biax, first pivot, the second pivot, the cutter, install in the inside double dynamical motor of biax of base including the stator, first rotor and second rotor, the stator, first rotor and second rotor are nested each other and rotatable each other, first rotor and second rotor mutual independence are rotatory, the stator includes stator core, the stator winding of coiling on stator core, wherein first rotor and second rotor are used for driving respectively with interior barrel bottom fixed connection's second pivot and install the relative antiport of first pivot of cutter, thereby fully smash food, improve crushing efficiency and crushing effect. The food processor provided by the invention realizes double-power food crushing by adopting a mode without mechanical differential and clutch, reduces the axial height, weight and cost of the cup holder, and has the advantages of high system integration level, high power density, low energy consumption and high reliability.)

1. A food processor, comprising:

the double-shaft double-power motor is arranged in the base and is connected with a first rotating shaft and a second rotating shaft;

an outer tub mounted above the base; and

the inner barrel can be rotatably arranged in the outer barrel and used for placing food to be crushed, the second rotating shaft is fixedly connected with the bottom of the inner barrel and is a hollow shaft, the first rotating shaft penetrates through the hollow part in the middle of the second rotating shaft to extend upwards and into the inner cavity of the inner barrel, and a cutter is arranged on the first rotating shaft;

wherein the double-shaft double-power motor comprises a stator, a first rotor and a second rotor, the stator, the first rotor and the second rotor are nested with each other and can rotate with each other, every two adjacent stators, the first rotor and the second rotor are separated by an air gap, the first rotor and the second rotor rotate independently of each other, and the stator comprises: the inner barrel comprises a stator core and a stator winding, wherein the stator winding is wound on the stator core, one of the first rotor and the second rotor is relatively and fixedly connected with the first rotating shaft and used for driving the cutter to rotate, and the other of the first rotor and the second rotor is relatively and fixedly connected with the second rotating shaft and used for driving the inner barrel to rotate.

2. The food processor 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 food processor of claim 1,

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

4. The food processor 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 food processor 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 food processor 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 food processor of claim 2, 4, 5 or 6,

the stator comprises a set of stator winding, 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, 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_r＝|p_s±p_f|；p_f≠p_s。

8. the food processor 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 food processor of 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 food processor of claim 9,

the current injection frequencies of the two sets of stator windings respectively meet the following conditions: 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 two sets of stator windingsThe current injection phase angles of the groups respectively satisfy: 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 food processor 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 food processor of any one of claims 1 to 6 or 11,

the tool comprises one or a set of blades; or

The cutter comprises a plurality of or a plurality of groups of blades, the blade closest to the lower part of the inner barrel is inclined upwards, and the blade closest to the upper part of the inner barrel is inclined downwards; or

The cutter comprises one or more stirring claws, and the stirring claws are used for uniformly stirring the food to be crushed.

13. The food processor of any one of claims 1 to 6 or 11,

the inner barrel is a filter screen; or

The inner barrel is a metal barrel with a smooth inner wall; or

The inner barrel is a metal barrel with a bulge on the inner wall; or

The inner wall of the inner barrel is connected with one or more of a stirring claw, a stirring rod and a stirring blade.

Technical Field

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

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 food processor.

In order to achieve the above object, the present invention provides a food processor, including: the double-shaft double-power motor is arranged in the base and is connected with a first rotating shaft and a second rotating shaft; an outer tub mounted above the base; the inner barrel can be rotatably arranged in the outer barrel and used for placing food to be crushed, the second rotating shaft is fixedly connected with the bottom of the inner barrel and is a hollow shaft, the first rotating shaft penetrates through the hollow part in the middle of the second rotating shaft to extend upwards and into the inner cavity of the inner barrel, and a cutter is arranged on the first rotating shaft; wherein the double-shaft double-power motor comprises a stator, a first rotor and a second rotor, the stator, the first rotor and the second rotor are nested with each other and can rotate with each other, every two adjacent stators, the first rotor and the second rotor are separated by an air gap, the first rotor and the second rotor rotate independently of each other, and the stator comprises: the inner barrel comprises a stator core and a stator winding, wherein the stator winding is wound on the stator core, one of the first rotor and the second rotor is relatively and fixedly connected with the first rotating shaft and used for driving the cutter to rotate, and the other of the first rotor and the second rotor is relatively and fixedly connected with the second rotating shaft and used for driving the inner barrel to rotate.

The food processor provided by the technical scheme of the invention adopts a double-power rotating structure with double rotating shafts, the first rotor and the second rotor respectively and independently drive the second rotating shaft fixedly connected to the bottom of the inner barrel and the first rotating shaft provided with a cutter (such as a blade) to rotate, preferably, the second rotating shaft and the first rotating shaft are driven to rotate oppositely (of course, the second rotating shaft and the first rotating shaft can also rotate in the same direction, at the same speed or at different speeds), the inner barrel drives food to be crushed to rotate at a high speed, and the first rotating shaft drives the blade to rotate at a high speed, so that the food is fully crushed, the crushing efficiency and the crushing effect are improved, and a beverage with high nutritive value; meanwhile, compared with the existing wall breaking food processor with a single blade, the blade can achieve twice crushing effect under the condition that only half of the rotating speed of the blade of the existing wall breaking food processor is required, the performance requirement of the motor is reduced, and meanwhile, the motor runs at a relatively low speed, so that the motor is beneficial to the service life and the structure stability of the motor; meanwhile, compared with the existing scheme that two motors are axially connected in series to output double rotating speeds, the axial height, weight and cost of the cup base (namely the base) are reduced; secondly, the double-power food crushing is realized by adopting 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 food processor 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.

At the upper partIn 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, 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 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 utilizing the two sets of stator windings, so that the first rotating shaft fixedly connected with the first rotor and the second rotating shaft fixedly connected with the second rotor relatively rotate independently, and the inner barrel and the cutter can rotate at different or same rotating speeds and in different or same directions.

In any of the above solutions, preferably, the cutter comprises one or a group of blades; or the cutter comprises a plurality of or a plurality of groups of blades, and the blade closest to the lower part of the inner barrel is inclined upwards, and the blade closest to the upper part of the inner barrel is inclined downwards; the cutter comprises one or more stirring claws, and the stirring claws are used for uniformly stirring the food to be crushed.

The food to be crushed is put into the inner cavity of the container, and the food to be crushed is sufficiently crushed for a plurality of times in a crushing area formed among a plurality of or a plurality of groups of blades, so that the crushing efficiency and the crushing effect are improved, and the beverage with high nutritive value can be obtained; preferably, the cutter comprises a plurality of groups of blades which are sequentially arranged along the axial direction of the first rotating shaft, each group of blades comprises a plurality of blades which are positioned at the same height and distributed along the circumferential direction of the first rotating shaft, one group of blades which are arranged closest to the lower part of the inner barrel are all inclined upwards, one group of blades which are arranged closest to the upper part of the inner barrel are all inclined downwards, and the directions of the blades at other positions are not limited, so that the crushing efficiency and the crushing effect are further improved; the cutter can also comprise a plurality of stirring claws so as to uniformly stir the food to be crushed by using the stirring claws.

In any of the above technical solutions, preferably, the inner barrel is a filter screen; or the inner barrel is a metal barrel with smooth inner wall; or the inner barrel is a metal barrel with a bulge on the inner wall; or the inner wall of the inner barrel is connected with one or more of stirring claws, a stirring rod and stirring blades.

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 diagram of a food processor according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a food processor according to another embodiment of the present invention;

fig. 3 is a schematic structural diagram of a food processor according to another embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a dual-shaft dual-power motor according to an embodiment of the invention;

fig. 5 is a schematic structural diagram of a food processor according to yet another embodiment of the invention;

fig. 6 is a schematic structural view of a two-shaft dual-power motor according to another embodiment of the invention.

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

a food processor 1;

an outer tub 10, a base 20;

a blade 11, an inner barrel 12, a first rotating shaft 13, a second rotating shaft 14, a stirring rod 15 and a stirring blade 16;

the double-shaft double-power motor 21, the stator 211, the reluctance rotor 212, the permanent magnet rotor 213, the first rotor 214 and the second rotor 215;

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

a first bearing 31, a second bearing 32, a first transmission shaft 33 and a second transmission shaft 34.

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.

The food processor 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, according to some embodiments of the present invention, there is provided a food processor 1, including: the food crushing machine comprises an outer barrel 10, a base 20, a double-shaft double-power motor 21, cutters (such as blades 11 in figures 1, 2, 3 and 5), an inner barrel 12, a first rotating shaft 13 and a second rotating shaft 14, wherein food to be crushed is placed in the inner cavity of the inner barrel 12, the inner barrel 12 can be rotatably arranged in the outer barrel 10, the outer barrel 10 is arranged above the base 20, the double-shaft double-power motor 21 is arranged in the base 20, the double-shaft double-power motor 21 is connected with the first rotating shaft 13 and the second rotating shaft 14, the second rotating shaft 14 is fixedly connected with the bottom of the inner barrel 10 and is a hollow shaft 14, the first rotating shaft 13 penetrates through the hollow part in the middle of the second rotating shaft 14 to extend upwards and into the inner cavity of the inner barrel 10, and the cutters are arranged.

Specifically, the two-shaft dual-power motor 21 includes a stator 211, a first rotor (e.g., a reluctance rotor 212 in fig. 1 to 4, a first rotor 214 in fig. 5 and 6), and a second rotor (e.g., a permanent magnet rotor 213 in fig. 1 to 4, a second rotor 215 in fig. 5 and 6), where the stator 211, the first rotor, and the second rotor are nested and rotatable with each other, and every two adjacent ones of the stator 211, the first rotor, and the second rotor are separated by an air gap, the first rotor and the second rotor rotate independently of each other, and the stator 211 includes: the food crushing machine comprises a stator core 2111 and a stator winding 2112, wherein the stator winding 2112 is wound on the stator core 2111, one of a first rotor and a second rotor is relatively and fixedly connected with a first rotating shaft 13 and used for driving a cutter to rotate, and the other of the first rotor and the second rotor is relatively and fixedly connected with a second rotating shaft 14 and used for driving an inner barrel 12 to rotate, so that the first rotor and the second rotor respectively and independently drive the inner barrel 12 and the cutter to rotate, food to be crushed rotates in the inner cavity of the inner barrel 12 at a high speed, and the food is sufficiently crushed under the high-speed rotation action of the cutter such as a blade 11.

In an embodiment of the present invention, as shown in fig. 1 to 4, the two-shaft dual-power motor 21 includes a stator 211, a reluctance rotor 212 and a permanent magnet rotor 213, which are annular, and 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, 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 magnet rotor 213 is located outside the reluctance rotor 212; 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. 4, the stator 211 includes: a stator core 2111 and a stator winding 2112, wherein the stator core is made of a high permeability magnetic material, the stator winding 2112 is wound on the stator core, as shown in fig. 1, 2 and 3, 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 cutter 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 inner barrel 12 to rotate; the second rotating shaft 14 is a hollow shaft, the first rotating shaft 13 extends upwards through the hollow part in the middle of the second rotating shaft 14 and extends into the inner cavity of the inner barrel 12, the blades 11 are mounted on the first rotating shaft 13, and the reluctance rotor 212 and the permanent magnet rotor 213 respectively and independently drive the first rotating shaft 13 and the second rotating shaft 14 to rotate, so that the inner barrel 12 and the blades 11 rotate independently, food rotates at a high speed in the inner cavity of the inner barrel 12 and is fully crushed under the high-speed rotation action of the blades 11.

That is, when the reluctance rotor 212 is fixedly connected to the second rotating shaft 14 through the first transmission shaft 33 (or the second transmission shaft 34) and drives the second rotating shaft 14 to rotate, thereby driving the inner tub 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 33) (or directly fixedly connected to the first rotating shaft 13) and drives the first rotating shaft 13 to rotate, thereby driving the blades 11 to rotate; when the reluctance rotor 212 is fixedly connected to the first rotating shaft 13 through the first transmission shaft 33 (or the second transmission shaft 34) and drives the first rotating shaft 13 to rotate, thereby driving the blades 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 33) and drives the second rotating shaft 14 to rotate, thereby driving the inner tub 12 to rotate, and the food is sufficiently pulverized under the interaction of the inner tub 12 and the blades 11 rotating coaxially.

In one embodiment, as shown in fig. 1, the stator 211 is located at the outer side of the reluctance rotor 212, the stator 211, the reluctance rotor 212 and the permanent magnet rotor 213 are sequentially nested from the outside to the inside, the reluctance rotor 212 is fixedly connected to the second rotating shaft 14 through the first transmission shaft 33 and drives the second rotating shaft 14 to rotate, thereby driving the inner barrel 12 to rotate, and the permanent magnet rotor 213 is directly fixedly connected to the first rotating shaft 13 and drives the first rotating shaft 13 to rotate, thereby driving the blades 11 mounted on the first rotating shaft 13 to rotate.

In another embodiment, as shown in fig. 2, 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 second transmission shaft 34 and drives the first rotating shaft 13 to rotate, and further drives the blades 11 to rotate, the permanent magnet rotor 213 is fixedly connected to the second rotating shaft 14 through the first transmission shaft 33 and drives the second rotating shaft 14 to rotate, so as to drive the inner tub 12 to rotate, and the food is sufficiently pulverized under the interaction of the inner tub 12 and the blades 11 rotating coaxially.

In another embodiment, as shown in fig. 3, 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 first rotating shaft 13 through the second transmission shaft 34 and drives the first rotating shaft 13 to rotate, thereby driving the blades 11 mounted on the first rotating shaft 13 to rotate, and the permanent magnet rotor 213 is directly fixedly connected to the second rotating shaft 14 and drives the second rotating shaft 14 to rotate, thereby driving the inner tub 12 fixedly connected to the second rotating shaft 14 to rotate.

According to the food processor 1, double-power food crushing is realized in a mode of no mechanical differential and no 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.

As shown in fig. 1 to 3, in order to ensure smooth rotation of the first and second rotating shafts 13 and 14, a first bearing 31 is supported between the first and second rotating shafts 13 and 14, and a second bearing 32 is supported between the outside of the second rotating shaft 14 and the base 20 and the outer tub 10.

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. 4, when the stator 211 is located at the outer side of the reluctance rotor 212, the stator core 2111 includes a stator casing 2113, the stator casing 2113 is sleeved at the outer side of the stator core 2111, and the stator casing 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. 4, 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. 4, 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. 4, 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 invention, stator 211 includes two sets of stator windings 2112, referred to as a first winding and a second winding, respectively, and reluctance rotor 212 includes a magnetically permeable reluctance core 2121 and a non-conductive reluctance coreMagnetic spacing blocks 2122, reluctance cores 2121 and spacing blocks 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. 5 and 6, the stator 211 is disposed between the first rotor 214 and the second rotor 215, the stator 211 includes a stator core 2111 and two sets of stator windings 2112, the two sets of stator windings 2112 are wound on the stator core 2111, and the two sets of stator windings 2112 respectively correspond to the first rotor 214 and the second rotor 215 to respectively and independently drive the first rotor 214 and the second rotor 215 to rotate.

The first rotor 214 and the second rotor 215 are respectively and independently driven to rotate by two sets of stator windings 2112, so that the first rotating shaft 13 (or the second rotating shaft 14) fixedly connected with the first rotor 214 and the second rotating shaft 14 (or the first rotating shaft 13) fixedly connected with the second rotor 215 independently rotate, and the blades 11 and the inner barrel 12 can rotate at different or same rotating speeds, in different or same directions.

In some embodiments of the present invention, as shown in fig. 1 and 2, the cutter includes a plurality or sets of blades 11, and the blades 11 closest to the lower portion of the inner tub 12 are inclined upward and the blades 11 closest to the upper portion of the inner tub 12 are inclined downward.

The number of the blades 11 may be plural, the blade 11 closest to the lower portion of the inner tub 12 is inclined upward, the blade 11 closest to the upper portion of the inner tub 12 is inclined downward, the directions of the remaining blades 11 are not limited, a crushing region is formed between the blade 11 and the blade 11, the food to be crushed is put into the inner cavity of the inner tub 12, and the food to be crushed is sufficiently crushed a plurality of times in the crushing region formed between the inner tub 12 and the blade 11, and between the blade 11 and the blade 11.

In one embodiment, as shown in fig. 1 and 2, the cutter includes a plurality of sets of blades 11 sequentially arranged along an axial direction of the first rotating shaft 13, each set of blades 11 includes a plurality of blades 11 located at the same height and distributed along a circumferential direction of the first rotating shaft 13, and one set of blades 11 is located at a position close to an upper portion of the inner barrel 12 and the set of blades 11 are all inclined downward, and the other set of blades 11 is located at a position close to a lower portion of the inner barrel 12 and the set of blades 11 are all inclined upward, so as to further improve the crushing efficiency and the crushing effect.

In some embodiments of the present invention, the first rotating shaft 13 and the second rotating shaft 14 rotate in opposite directions, so that the inner tub 12 rotates the food to be pulverized at a high speed, the first rotating shaft 13 rotates the blades 11 at a high speed to perform the function of pulverizing the food, and the food to be pulverized is sufficiently pulverized a plurality of times in the pulverizing region formed between the inner tub 12 and the blades 11, and between the blades 11 and the blades 11, thereby improving the pulverizing efficiency and the pulverizing effect.

Of course, the rotation directions of the first rotating shaft 13 and the second rotating shaft 14 may be the same, and the rotation speeds of the first rotating shaft 13 and the second rotating shaft 14 may be set to be different.

Of course, the tool may also comprise only one or a set of blades 11, as shown in fig. 3 and 5; the cutter can also comprise one or more stirring claws, and the food to be crushed is uniformly stirred under the action of the stirring claws.

In some embodiments of the present invention, the inner barrel 12 is a strainer; or the inner barrel 12 is a metal barrel (such as a stainless steel barrel) with a smooth inner wall; or the inner barrel 12 is a metal barrel (such as a stainless steel barrel) with a bulge on the inner wall; or one or more of a stirring claw, a stirring rod 15 and a stirring blade 16 are connected to the inner wall of the inner barrel 12.

The inner wall of the inner barrel 12 is provided with the bulges, so that the inner barrel 12 can form the effect similar to the fish scale-shaped inner wall of the inner barrel of a washing machine or the planer tool-shaped bulges for cutting the potato shreds, the impact and friction degree between the food to be crushed and the inner wall of the inner barrel 12 is increased, and the crushing efficiency and the crushing effect are improved.

In one embodiment, as shown in fig. 3, a stirring rod 15 is connected to the inner wall of the upper portion of the inner barrel 12, so that the food to be pulverized is uniformly stirred by the stirring rod 15, and the pulverizing efficiency and the pulverizing effect are improved; meanwhile, the blade 11 is fixedly connected at a lower position of the first rotating shaft 13, and preferably the blade 11 is inclined upward, so that the crushing efficiency and the crushing effect are further improved by the cooperation of the stirring rod 15 and the blade 11.

In another embodiment, as shown in fig. 5, a fixing rod is connected to the inner wall of the bottom of the inner barrel 12, and a stirring blade 16 is fixed on the fixing rod, so that the food to be crushed is uniformly stirred by the stirring blade 16, and the crushing efficiency and the crushing effect are improved; meanwhile, the blade 11 is fixedly connected at an upper position of the first rotating shaft 13, and preferably the blade 11 is inclined downward, so that the crushing efficiency and the crushing effect are further improved by the cooperation of the stirring blade 16 and the blade 11.

Specifically, the stirring rod 15 and the stirring blade 16 may be designed into one or more groups according to needs.

The food processor 1 adopts a double-power rotating structure with double rotating shafts, the inner barrel 12 drives food to be crushed to rotate at a high speed, the first rotating shaft 13 drives the blade 11 to rotate at a high speed to crush the food, and the food to be crushed is crushed fully for multiple times in a crushing area formed between the inner barrel 12 and the blade 11 and between the blade 11 and the blade 11, so that the crushing efficiency and the crushing effect are improved, and the beverage with high nutritive value can be obtained; compared with the existing wall-breaking food processor with a single blade, the blade can achieve twice crushing effect under the condition that the rotating speed of the blade is only half of that of the existing wall-breaking food processor, so that the performance requirement of the motor is reduced, and meanwhile, the motor runs at a relatively low speed, so that the motor is beneficial to the service life and the structural stability; meanwhile, compared with the existing scheme that two motors are axially connected in series to output double rotating speeds, the axial height, weight and cost of the cup base (namely the base) are reduced; secondly, the double-power food crushing is realized by adopting 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.