CN110165855B - Stator iron core, stator assembly, motor and food processor - Google Patents
Stator iron core, stator assembly, motor and food processor Download PDFInfo
- Publication number
- CN110165855B CN110165855B CN201810140209.6A CN201810140209A CN110165855B CN 110165855 B CN110165855 B CN 110165855B CN 201810140209 A CN201810140209 A CN 201810140209A CN 110165855 B CN110165855 B CN 110165855B
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract 8
- 238000004804 winding Methods 0.000 claims description 40
- 238000003756 stirring Methods 0.000 claims description 18
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000000712 assembly Effects 0.000 abstract description 17
- 238000000429 assembly Methods 0.000 abstract description 17
- 238000009434 installation Methods 0.000 abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 230000009347 mechanical transmission Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000002337 anti-port Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/141—Stator cores with salient poles consisting of C-shaped cores
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
本发明公开了一种定子铁芯、定子总成、电机和食物料理机，所述定子铁芯(11)包括铁芯外圈部(117)，所述铁芯外圈部(117)内形成有对置式布置且朝向彼此向内伸出的第一定子齿(111)和第二定子齿(112)以及位于所述第一定子齿(111)与第二定子齿(112)之间的第一转子安装孔(113)和第二转子安装孔(114)，所述第一转子安装孔(113)与第二转子安装孔(114)的孔中心连线方向垂直于所述第一定子齿(111)和第二定子齿(112)的对置式伸出方向。通过优化本发明中的定子铁芯的形状和结构，安装在电机的第一转子安装孔与第二转子安装孔中的两个转子总成能够实现相互独立枢转，有效提高了定子铁芯的使用率以及低减了电机的工作噪音。
The invention discloses a stator iron core, a stator assembly, a motor and a food processor. The stator iron core (11) includes an iron core outer ring portion (117), and the iron core outer ring portion (117) is formed in the inner ring portion (117). There are first (111) and second (112) stator teeth (111) and second stator teeth (112) arranged oppositely and projecting inwardly towards each other and between said first (111) and second stator teeth (112) The first rotor mounting hole (113) and the second rotor mounting hole (114), the direction of the connection line between the center of the first rotor mounting hole (113) and the second rotor mounting hole (114) is perpendicular to the first rotor mounting hole (113) and the second rotor mounting hole (114). The opposite protruding directions of the stator teeth (111) and the second stator teeth (112). By optimizing the shape and structure of the stator iron core in the present invention, the two rotor assemblies installed in the first rotor installation hole and the second rotor installation hole of the motor can pivot independently of each other, effectively improving the stability of the stator iron core. The usage rate and the low working noise of the motor are reduced.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a stator core, a stator assembly, a motor and a food processor.
Background
The motor cannot simultaneously drive a plurality of rotor assemblies arranged in parallel to each other to independently pivot at a plurality of rotation directions or rotation speeds respectively due to the shape and the structure of the existing stator core. Therefore, household appliances such as a food processor and the like with a parallel double-cutter shaft structure can only be additionally provided with mechanical transmission structures such as gear engagement and the like between the double cutter shafts to adjust the steering and rotating speed of the cutter shafts.
However, the mechanical transmission structure can obviously increase the noise of the food processor in a working state, and seriously affect the use experience of a user; on the other hand, the complex structure is not beneficial to simple production and installation, and the production difficulty and the production cost are increased to a certain degree.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, the present invention provides a stator core, a stator assembly, a motor, and a food processor, which can achieve a reduction in operating noise and an improvement in production efficiency of the motor and the food processor by optimizing the shape and structure of the stator core.
In order to achieve the above object, the present invention provides a stator core, which includes a core outer ring portion, in which first and second stator teeth arranged oppositely and extending inward toward each other and first and second rotor mounting holes located between the first and second stator teeth are formed, a hole center connecting line direction of the first and second rotor mounting holes is perpendicular to an opposite extending direction of the first and second stator teeth, and in the opposite extending direction, stator winding slots are formed between a root of the first stator tooth and the core outer ring portion and between a root of the second stator tooth and the core outer ring portion.
Optionally, the first stator tooth and the second stator tooth are the same shape and symmetrical about the hole center line.
Optionally, the addendum line of the first stator tooth includes a partial outer circumferential arc line of the first rotor mounting hole and a partial outer circumferential arc line of the second rotor mounting hole.
Optionally, the tooth top of the first stator tooth includes two side tooth boots and orientation the central sharp corner portion that the middle air gap between first rotor mounting hole and the second rotor mounting hole extends, central sharp corner portion by the partial outer periphery circular arc line of first rotor mounting hole with the partial outer periphery circular arc line cutting of second rotor mounting hole the tooth top forms, tooth boots is the winding form edge the outer periphery circular arc line of first rotor mounting hole or second rotor mounting hole extends.
Optionally, the central pointed portion of the first stator tooth and the central pointed portion of the second stator tooth are disconnected from each other at a spacing.
Optionally, the distance between the central pointed corner of the first stator tooth and the central pointed corner of the second stator tooth is 5mm to 8 mm.
Optionally, the length of the hole center line is s, the radius of the first rotor mounting hole is R, and the radius of the second rotor mounting hole is R, so that: s > R + R.
In addition, the invention also provides a stator assembly which comprises the stator core, wherein the first stator teeth are provided with first stator windings, the second stator teeth are provided with second stator windings, and stator magnetic fields generated by the first stator windings and the second stator windings cover the first rotor mounting hole and the second rotor mounting hole.
Optionally, the stator magnetic field is distributed in a spindle shape.
In addition, the invention also provides a motor which comprises a first rotor assembly, a second rotor assembly and the stator assembly, wherein the first rotor assembly is installed in the first rotor installation hole and extends out of a first motor shaft, the second rotor assembly is installed in the second rotor installation hole and extends out of a second motor shaft, and the first motor shaft and the second motor shaft are arranged in parallel.
In addition, the invention also provides a food processor which comprises a first stirring cutter component, a second stirring cutter component and the motor, wherein the first stirring cutter component is fixedly arranged on the first motor shaft, and the second stirring cutter component is fixedly arranged on the second motor shaft.
Through the technical scheme, the shape and the structure of the first stator tooth and the second stator tooth in the stator core can guide magnetic induction lines of a stator magnetic field to cover the first rotor mounting hole and the second rotor mounting hole without mutual interference, so that two rotor assemblies arranged in the first rotor mounting hole and the second rotor mounting hole can pivot independently, and the utilization rate of the stator core is effectively improved.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a plan view of a stator core in an embodiment of the present invention;
fig. 2 is a side view of an electric machine employing the stator core of fig. 1;
FIG. 3 is a side cross-sectional view of the motor of FIG. 2;
FIG. 4 is a front cross-sectional view of the motor of FIG. 2;
FIG. 5 is a cross-sectional schematic view of the motor of FIG. 2;
fig. 6 is a schematic circuit diagram of the motor of fig. 2.
Description of reference numerals:
100 motor
1 stator Assembly 2 first rotor Assembly
3 second rotor assembly 4 commutator
5 carbon brush 6 carbon brush holder
7 bearing 8 motor casing
11 stator core 12 first stator winding
13 second stator winding 21 first motor shaft
22 first rotor winding 31 second motor shaft
32 second rotor winding 81 upper shell assembly
82 lower casing assembly
111 first stator teeth 112 second stator teeth
113 first rotor mounting hole 114 second rotor mounting hole
115 center sharp corner 116 tooth shoe
117 core outer ring 118 addendum line
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like are generally described with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, or gravitational direction.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The present embodiment provides a stator core 11. As shown in fig. 1, the stator core 11 includes a core outer ring portion 117. The core outer ring portion 117 has first and second stator teeth 111 and 112 formed therein, which are oppositely disposed and protrude inward toward each other, and first and second rotor mounting holes 113 and 114 formed between the first and second stator teeth 111 and 112 and arranged in parallel with each other. The direction of the center line of the first rotor mounting hole 113 and the second rotor mounting hole 114 is perpendicular to the opposing projecting direction of the first stator tooth 111 and the second stator tooth 112. Further, in the opposed projecting direction, stator winding grooves are formed between the root portion of the first stator tooth 111 and the core outer ring portion 117 and between the root portion of the second stator tooth 112 and the core outer ring portion 117.
When the winding manner of the stator winding disposed in the stator winding slot is reasonable, the unique stator tooth shape of the stator core 11 can effectively guide the magnetic induction lines of the stator magnetic field generated by the stator winding being energized, i.e., the magnetic induction lines can be relatively independently distributed in the first rotor mounting hole 113 and the second rotor mounting hole 114. Therefore, the two rotor assemblies correspondingly installed in the first rotor installation hole 113 and the second rotor installation hole 114 can pivot independently under the electromagnetic action, and two motor shafts extending out of the two rotor assemblies in parallel do not need to be driven through an additional mechanical structure, so that the noise generated when the motors work is effectively reduced. In addition, the structure of the stator core 11 of the present embodiment is simpler than the structure of mechanical transmission and the like, which is beneficial to reducing the production difficulty, thereby improving the production efficiency and reducing the production cost.
In some specific operating conditions, it may be desirable to have approximately the same output power for both motor shafts of the motor. At this time, the first stator teeth 111 and the second stator teeth 112 of the stator core 11 may be preferably provided in the same shape and symmetrical structure with respect to the hole center line, so that the stator magnetic field is uniformly distributed in the first rotor mounting hole 113 and the second rotor mounting hole 114, i.e., having substantially the same magnetic field shape and magnetic field density. At this time, the overall shape of the stator core 11 is more uniform, and the motor has a better internal space utilization rate and a beautiful appearance.
Specifically, the tooth top line 118 of the first stator tooth 111 includes a partial outer circumferential arc line of the first rotor mounting hole 113 and a partial outer circumferential arc line of the second rotor mounting hole 114, and in the case where the first stator tooth 111 and the second stator tooth 112 have the same shape and are symmetrical about the hole center line, the tooth top line shapes thereof are also identical. The addendum line is shaped to form a smaller air gap between the stator teeth and the rotor assembly, which is more favorable for the distribution of the stator magnetic field in the rotor mounting hole.
Further, the tooth top of the first stator tooth 111 is provided with a center pointed portion 115 extending toward the intermediate air gap between the first and second rotor mounting holes 113 and 114. The center pointed portion 115 is formed by cutting the tooth tops from the partial outer peripheral arc line of the first rotor mounting hole 113 and the partial outer peripheral arc line of the second rotor mounting hole 114. When the two partial outer circumferential arc lines intersect or are tangent, the tip of the central acute angle portion 115 is formed in a sharp angle shape; when the two partial outer circumference arc lines do not intersect, the top end of the central sharp corner portion 115 is formed into an approximate sharp corner shape, and at this time, the distance between the two partial outer circumference arc lines should not be too large, otherwise, the magnetic field density of the stator magnetic field at the central sharp corner portion 115 is too large, so that the two rotor assemblies are forced to interfere with each other.
Further, the tooth tip portion is provided with tooth shoes 116 formed on both sides of the central pointed portion 115, and the tooth shoes 116 extend in a wrap-around shape along the outer circumferential arc line of the first rotor mounting hole 113 or the second rotor mounting hole 114. The arrangement of the tooth shoe 116 is beneficial to enlarging the coverage area of the stator magnetic field in the first rotor mounting hole 113 or the second rotor mounting hole 114, ensures that the rotor assembly can continuously and stably rotate at high speed, and improves the working stability of the motor.
From the above, in order to avoid the interference of the two rotor assemblies in the first rotor mounting hole 113 and the second rotor mounting hole 114, the distribution of the stator magnetic field at the central sharp corner 115 should be minimized. In addition to providing the center pointed portion 115 as sharp as possible, the center pointed portion 115 of the first stator tooth 111 and the center pointed portion 115 of the second stator tooth 112 may be preferably provided in a structure that is spaced apart. With this structure, a large air gap exists between the two central pointed portions 115, and the permeability of the air gap is small relative to the permeability of the stator core 11, so that the transition region between the first rotor mounting hole 113 and the second rotor mounting hole 114 is hardly covered with the stator magnetic field, thereby avoiding the situation of force interference between the two rotor assemblies and ensuring that the two rotor assemblies can pivot independently of each other.
However, the distance between the two central sharp corners 115 is also not suitable to be too small, otherwise the effective stator magnetic field area covering the first rotor mounting hole 113 or the second rotor mounting hole 114 is reduced. In the present embodiment, the distance between the center pointed portion 115 of the first stator tooth 111 and the center pointed portion 115 of the second stator tooth 112 is preferably set to 5mm to 8 mm.
Further, in the case where the first stator tooth 111 and the second stator tooth 112 are identical in shape and symmetrical about the hole center line, in order to prevent the two rotor assemblies mounted in the first rotor mounting hole 113 and the second rotor mounting hole 114 from interfering with each other when rotated, the radius R of the first rotor mounting hole 113, the radius R of the second rotor mounting hole 114, and the length s of the hole center line are set to satisfy the relationship: s > R + R.
In addition, the present embodiment also provides a stator assembly 1. As shown in fig. 2 and 5, the stator assembly 1 includes the stator core 11 described above. The first stator teeth 111 of the stator core 11 are provided with first stator windings 12, and the second stator teeth 112 are provided with second stator windings 13. The stator magnetic field generated by the first stator winding 12 and the second stator winding 13 is covered in the first rotor mounting hole 113 and the second rotor mounting hole 114. And, by properly setting the shapes of the first stator teeth 111 and the second stator teeth 112, the stator magnetic field generated by the stator winding can be distributed in the shape of a spindle in the first rotor mounting hole 113 and the second rotor mounting hole 114, respectively, so that the two rotors mounted in the first rotor mounting hole 113 and the second rotor mounting hole 114 can pivot independently of each other.
This embodiment also provides a motor 100, as shown in fig. 2 to 5, the motor 100 includes a motor housing 8 and a plurality of mutually independent rotor assemblies disposed in a motor cavity in the motor housing 8, each rotor assembly extends with a corresponding motor shaft, and each motor shaft is parallel to each other and can pivot along with the corresponding rotor assembly.
In a structure that enables mutually independent pivoting of a plurality of rotor assemblies of the motor 100, the plurality of rotor assemblies are installed in rotor installation holes of a plurality of stator assemblies in a one-to-one correspondence, the plurality of stator assemblies are all installed in the same motor case 8, and the plurality of rotor installation holes are all axial through holes. Through setting up this many stators many rotors' structure, need not carry out transmission output through mechanical drive mechanism such as gear engagement between many parallel motor shafts of motor 100 to reduce the mechanical vibration and the mechanical wear of motor shaft, life can effectively improve. However, this configuration requires a high current overload capability of the motor 100, and in the case of insufficient voltage, the motor 100 may have a slow rotation or intermittent stall of a certain motor shaft. Furthermore, in the case where multiple stator and rotor members operate simultaneously, the operating noise of the motor 100 may not be reduced most effectively.
To further solve the above-mentioned structural deficiencies, the present embodiment further provides another single-stator dual-rotor structure capable of realizing mutually independent pivoting of a plurality of rotor assemblies of the motor 100. In this configuration, motor 100 includes a common stator assembly, first rotor assembly 2, second rotor assembly 3, first motor shaft 21, and second motor shaft 31. The rotor core of the first rotor assembly 2 is provided with a first rotor winding 22, and the rotor core of the second rotor assembly 3 is provided with a second rotor winding 32.
In the present embodiment, the stator assembly 1 may be used as a common stator assembly, and the stator core 11 is a common stator core of the common stator assembly. In this case, the common stator core of the common stator assembly is provided with a first rotor mounting hole 113 and a second rotor mounting hole 114 which penetrate in the axial direction and are parallel to each other. First rotor assembly 2, mounted in first rotor mounting hole 113, is capable of driving rotation of first motor shaft 21, and second rotor assembly 3, mounted in second rotor mounting hole 114, is capable of driving rotation of second motor shaft 31. It can be seen that the motor 100 adopting the single-stator and double-rotor structure in the present embodiment can effectively make up for the above-mentioned disadvantages of the multi-stator and multi-rotor structure, and has the advantages of low working noise, long service life, high working stability, and the like.
Specifically, the motor housing 8 of the motor 100 includes an upper housing assembly 81 and a lower housing assembly 82, and the top end of each motor shaft extends out of the upper housing assembly 81 and the bottom end of each motor shaft extends out of the lower housing assembly 82. Wherein, bearings 7 for supporting each motor shaft are provided at the top position of the upper housing assembly 81 and at the bottom position of the lower housing assembly 82. The bottom of each motor shaft all is the rigid coupling has commutator 4 one by one, and each commutator 4 all sliding contact one-to-one installs a plurality of carbon brushes 5 in a plurality of carbon brush holders 6.
Fig. 6 shows one of the circuit connections of the electric machine 100. The positive electrode of the power supply is connected to the current inflow end of the first stator winding 12, the current outflow end of the first stator winding 12 is connected to one corresponding carbon brush 5 of each of the first rotor assembly 2 and the second rotor assembly 3 in a shunt manner, the other corresponding carbon brush 5 of each of the first rotor assembly 2 and the second rotor assembly 3 is simultaneously connected to the current inflow end of the second stator winding 13, and finally the current outflow end of the second stator winding 13 is connected to the negative electrode of the power supply, so that the motor 100 forms a complete electric loop.
When the direction of current through the first rotor winding 22 in the first rotor assembly 2 and the second rotor winding 32 in the second rotor assembly 3 is the same, the pivoting direction of the first rotor assembly 2 and the second rotor assembly 3 is the same; when the direction of the current flow is reversed, the first rotor assembly 2 and the second rotor assembly 3 pivot in opposite directions. As can be seen, the motor 100 using the stator core 11 of the present embodiment can simultaneously rotate the first rotor assembly 2 and the second rotor assembly 3 in the same direction or in the opposite direction, and the current direction can be switched by adjusting the connection sequence between the stator winding and the carbon brush.
Further, when the above-described magnitudes of currents through the first rotor winding 22 and the second rotor winding 32 are the same, the first rotor assembly 2 and the second rotor assembly 3 rotate at the same speed; when the current levels are different, the first rotor assembly 2 and the second rotor assembly 3 rotate at a differential speed. The magnitude of the current can be adjusted by changing the resistance of the circuit, for example, by adding an adjustable resistance element to the circuit or by changing the number of turns of the rotor winding.
The above-described circuit connection should be considered as an explanation of the function of the motor 100 of the present invention and should not be considered as a limitation of the present invention. In other words, connection modes suitable for different working conditions, such as series excitation, shunt excitation, compound excitation, and the like, may also be adopted between the stator winding and the rotor winding, and details are not described here. In addition, the motor 100 may employ a permanent magnet core having the same shape and structure as the stator core 11 in the present embodiment, and in this case, the motor 100 may omit the stator winding, and this structure is suitable for a permanent magnet dc motor.
This embodiment also provides a food processor that adopts above-mentioned motor 100. This food processor still includes a plurality of stirring knife tackle spares, and each stirring knife tackle spare one-to-one installs on the top of each motor shaft and follows each the motor shaft is rotatory. For example, when the food processor is provided with two stirring blade assemblies (including a first stirring blade assembly and a second stirring blade assembly), the motor 100 may adopt a single-stator and double-rotor structure, in which the first stirring blade assembly is fixedly mounted on the first motor shaft 21 and the second stirring blade assembly is fixedly mounted on the second motor shaft 31. Wherein, when first motor shaft 21 and second motor shaft 31 are rotatory with antiport or syntropy differential, the relative rotation rate between first stirring knife tackle spare and the second stirring knife tackle spare is great to make and eat and keep having great relative speed between the stirring knife tackle spare all the time, be favorable to improving food processor's crushing efficiency.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (11)
1. A stator core, characterized in that the stator core (11) comprises a core outer ring portion (117), a first stator tooth (111) and a second stator tooth (112) which are oppositely arranged and protrude inwards towards each other and a first rotor mounting hole (113) and a second rotor mounting hole (114) which are positioned between the first stator tooth (111) and the second stator tooth (112) are formed in the iron core outer ring part (117), the central connecting line direction of the first rotor mounting hole (113) and the second rotor mounting hole (114) is vertical to the opposite extending direction of the first stator tooth (111) and the second stator tooth (112), in the opposed projecting direction, stator winding grooves are formed between the root of the first stator tooth (111) and the core outer ring portion (117) and between the root of the second stator tooth (112) and the core outer ring portion (117).
2. The stator core according to claim 1, characterized in that the first stator tooth (111) and the second stator tooth (112) are identical in shape and symmetrical about the hole center line.
3. The stator core according to claim 2, wherein the tooth top line (118) of the first stator tooth (111) includes a partial outer circumferential arc line of the first rotor mounting hole (113) and a partial outer circumferential arc line of the second rotor mounting hole (114).
4. The stator core according to claim 3, wherein the tooth top portion of the first stator tooth (111) includes two side tooth shoe portions (116) and a center pointed portion (115) extending toward the intermediate air gap between the first rotor mounting hole (113) and the second rotor mounting hole (114), the center pointed portion (115) being formed by cutting the tooth top portion from a partial outer peripheral arc line of the first rotor mounting hole (113) and a partial outer peripheral arc line of the second rotor mounting hole (114), the tooth shoe portions (116) extending in a wrap-around shape along the outer peripheral arc line of the first rotor mounting hole (113) or the second rotor mounting hole (114).
5. The stator core according to claim 4, characterized in that the central pointed portion (115) of the first stator tooth (111) and the central pointed portion (115) of the second stator tooth (112) are disconnected from each other at a distance.
6. The stator core according to claim 5, characterized in that the distance between the central pointed part (115) of the first stator tooth (111) and the central pointed part (115) of the second stator tooth (112) is 5-8 mm.
7. The stator core according to claim 1, wherein the length of the hole center line is s, the radius of the first rotor mounting hole (113) is R, and the radius of the second rotor mounting hole (114) is R, such that: s > R + R.
8. A stator assembly, characterized in that the stator assembly (1) comprises a stator core (11) according to any one of claims 1-7, the first stator tooth (111) is provided with a first stator winding (12), the second stator tooth (112) is provided with a second stator winding (13), and a stator magnetic field generated by the first stator winding (12) and the second stator winding (13) covers the first rotor mounting hole (113) and the second rotor mounting hole (114).
9. The stator assembly according to claim 8, wherein the stator magnetic field is distributed in a spindle shape.
10. An electric machine, characterized in that the electric machine (100) comprises a first rotor assembly (2), a second rotor assembly (3) and a stator assembly (1) according to claim 8 or 9, the first rotor assembly (2) is mounted in the first rotor mounting hole (113) and extends with a first motor shaft (21), the second rotor assembly (3) is mounted in the second rotor mounting hole (114) and extends with a second motor shaft (31), the first motor shaft (21) and the second motor shaft (31) are arranged parallel to each other.
11. A food processor, characterized in that, food processor includes first stirring knife subassembly, second stirring knife subassembly and according to claim 10 motor (100), first stirring knife subassembly fixed mounting in on first motor shaft (21), second stirring knife subassembly fixed mounting in on second motor shaft (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810140209.6A CN110165855B (en) | 2018-02-11 | 2018-02-11 | Stator iron core, stator assembly, motor and food processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810140209.6A CN110165855B (en) | 2018-02-11 | 2018-02-11 | Stator iron core, stator assembly, motor and food processor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110165855A CN110165855A (en) | 2019-08-23 |
| CN110165855B true CN110165855B (en) | 2021-05-07 |
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| CN201810140209.6A Expired - Fee Related CN110165855B (en) | 2018-02-11 | 2018-02-11 | Stator iron core, stator assembly, motor and food processor |
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| CN115313789B (en) * | 2022-08-31 | 2024-04-30 | 哈尔滨理工大学 | Stator coupling area structure of radial double-parallel rotor motor |
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| JPH05146120A (en) * | 1991-11-19 | 1993-06-11 | Toshiba Corp | Motor |
| CN101202480A (en) * | 2006-07-14 | 2008-06-18 | 杨泰和 | Double-electric-unit structure |
| CN206023522U (en) * | 2016-08-31 | 2017-03-15 | 王雄才 | Birotor brushed DC motor and electrical equipment |
| CN207994743U (en) * | 2018-02-11 | 2018-10-19 | 佛山市顺德区美的电热电器制造有限公司 | Stator core, field frame assembly, motor and food cooking machine |
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- 2018-02-11 CN CN201810140209.6A patent/CN110165855B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04178143A (en) * | 1990-11-07 | 1992-06-25 | Sumitomo Special Metals Co Ltd | Integral type two-shaft synchronous driving motor |
| JPH05146120A (en) * | 1991-11-19 | 1993-06-11 | Toshiba Corp | Motor |
| CN101202480A (en) * | 2006-07-14 | 2008-06-18 | 杨泰和 | Double-electric-unit structure |
| CN206023522U (en) * | 2016-08-31 | 2017-03-15 | 王雄才 | Birotor brushed DC motor and electrical equipment |
| CN207994743U (en) * | 2018-02-11 | 2018-10-19 | 佛山市顺德区美的电热电器制造有限公司 | Stator core, field frame assembly, motor and food cooking machine |
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| CN110165855A (en) | 2019-08-23 |
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