CN110149036B - Motor and food processor - Google Patents
Motor and food processor Download PDFInfo
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- CN110149036B CN110149036B CN201810140199.6A CN201810140199A CN110149036B CN 110149036 B CN110149036 B CN 110149036B CN 201810140199 A CN201810140199 A CN 201810140199A CN 110149036 B CN110149036 B CN 110149036B
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- motor
- stator
- rotor
- mounting hole
- rotor mounting
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
- A47J43/04—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
- A47J43/04—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
- A47J43/07—Parts or details, e.g. mixing tools, whipping tools
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
- A47J43/04—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
- A47J43/07—Parts or details, e.g. mixing tools, whipping tools
- A47J43/08—Driving mechanisms
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
- A47J43/04—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
- A47J43/07—Parts or details, e.g. mixing tools, whipping tools
- A47J43/08—Driving mechanisms
- A47J43/087—Driving mechanisms for machines with several driving units
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/006—Structural associations of commutators
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a motor and a food processor, wherein the motor (100) comprises a motor shell (8) and a plurality of mutually independent rotor assemblies arranged in a motor cavity in the motor shell (8), wherein corresponding motor shafts extend out of the rotor assemblies, and the motor shafts are mutually parallel. The multiple rotor assemblies in the motor can realize mutually independent rotation through the matching structure of multiple stators or single stators, so that a mechanical transmission structure among multiple parallel motor shafts is omitted, the mechanical noise generated in the working process of the motor is effectively reduced, and the durability and the working stability are greatly improved.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a motor and a food processor.
Background
The food processor who suffers from current motor can not export the multiple technical defect who turns to or the rotational speed simultaneously, possesses parallel double knife axle structure on the market generally can realize the reverse or differential rotation between two sets of stirring knife tackle spares through setting up reasonable mechanical mechanism to improve the crushing efficiency to eating the material. The double cutter shafts usually include a main cutter shaft and an auxiliary cutter shaft, the main cutter shaft is directly driven to rotate by a motor shaft of a motor, and the auxiliary cutter shaft realizes driven rotation by a gear transmission structure between the auxiliary cutter shaft and the main cutter shaft.
However, the above gear transmission structure can further increase the noise of the food processor in the working state, which seriously affects the user experience; 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
Aiming at the defects or shortcomings in the prior art, the invention provides the motor and the food processor, which can realize the output of various steering or rotating speeds under the conditions of low noise reduction and optimized transmission structure, and effectively improve the crushing efficiency of the food processor.
In order to achieve the purpose, the invention provides a motor which comprises a motor shell and a plurality of mutually independent rotor assemblies arranged in a motor cavity in the motor shell, wherein the motor shell is provided with a plurality of bearing mounting holes, each rotor assembly extends out to form a corresponding motor shaft, and the plurality of motor shafts are mutually parallel and are inserted in a one-to-one corresponding manner and penetrate through the plurality of bearing mounting holes.
Optionally, the motor further includes a plurality of stator assemblies disposed in the motor cavity and engaged with the plurality of rotor assemblies one by one, a stator core of the stator assembly is provided with a rotor mounting hole axially penetrating therethrough, and the corresponding rotor assembly is mounted in the plurality of rotor mounting holes.
Optionally, the motor includes a shared stator assembly, a first rotor assembly, a second rotor assembly, a first motor shaft, and a second motor shaft, a first rotor mounting hole and a second rotor mounting hole are axially formed in a shared stator core of the shared stator assembly and are parallel to each other, the first rotor assembly mounted in the first rotor mounting hole drives the first motor shaft to rotate, and the second rotor assembly mounted in the second rotor mounting hole drives the second motor shaft to rotate.
Optionally, the common stator core includes a core outer ring portion, first and second stator teeth arranged in an opposite manner and extending inward toward each other and first and second rotor mounting holes located between the first and second stator teeth are formed in the core outer ring portion, and 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.
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 both sides tooth boots and orientation the central apex portion that the intermediate air gap between first rotor mounting hole and the second rotor mounting hole extends, central apex portion by the partial outer peripheral circular arc line of first rotor mounting hole with the partial outer peripheral circular arc line cutting of second rotor mounting hole the tooth top forms, the first stator tooth the central apex portion with the second stator tooth the central apex portion breaks off at an interval each other, tooth boots are the surrounding form and follow the outer peripheral circular arc line of first rotor mounting hole or second rotor mounting hole extends.
Optionally, the first stator teeth are provided with first stator windings, the second stator teeth are provided with second stator windings, stator magnetic fields generated by the first stator windings and the second stator windings cover the first rotor mounting holes and the second rotor mounting holes, and the stator magnetic fields are distributed in a spindle shape.
Optionally, the motor casing includes casing assembly and lower casing assembly, each the top of motor shaft all stretches out go up casing assembly and bottom and all stretch out casing assembly down, each the bottom of motor shaft all is the rigid coupling one by one has the commutator, each the equal sliding contact a plurality of carbon brushes of commutator.
In addition, the invention also provides a food processor which comprises a plurality of stirring knife assemblies and the motor, wherein the stirring knife assemblies are arranged at the top ends of the motor shafts in a one-to-one correspondence manner and rotate along with the motor shafts.
Through the technical scheme, the plurality of rotor assemblies capable of rotating independently are arranged in the motor shell of the motor, so that the synchronous independent pivoting of the motor shafts which are parallel in pairs can be realized without mechanical transmission modes such as gear meshing, the working noise of the motor is effectively reduced, and the durability and the working stability of the motor are 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.
When the winding manner of the stator winding 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 electrifying the stator winding, i.e. the magnetic induction lines can be distributed in the first rotor mounting hole 113 and the second rotor mounting hole 114 relatively independently. 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 case 8 of the motor 100 includes an upper case assembly 81 and a lower case assembly 82. Wherein, a plurality of corresponding bearing mounting holes are arranged on the upper shell assembly 81 and the lower shell assembly 82. The top end of each motor shaft extends out of a bearing mounting hole in the upper housing assembly 81 and the bottom end extends out of a bearing mounting hole in 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 opposite directions, 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, the motor 100 may adopt a single-stator and double-rotor structure, and the two stirring blade assemblies may be respectively mounted on the top ends of the first motor shaft 21 and the second motor shaft 31. Wherein, when first motor shaft 21 and second motor shaft 31 rotate with antiport or syntropy differential, it has great relative speed to keep all the time between the rotating blade of edible material and stirring knife tackle spare, is 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 (7)
1. A motor is characterized in that the motor (100) comprises a motor shell (8) and a plurality of mutually independent rotor assemblies arranged in a motor cavity in the motor shell (8), wherein the motor shell (8) is provided with a plurality of bearing mounting holes, each rotor assembly extends out to form a corresponding motor shaft, and the motor shafts are mutually parallel and are inserted in a one-to-one corresponding manner and penetrate out of the bearing mounting holes;
the motor (100) comprises a common stator assembly, a first rotor assembly (2), a second rotor assembly (3), a first motor shaft (21) and a second motor shaft (31), wherein a common stator core of the common stator assembly is internally provided with a first rotor mounting hole (113) and a second rotor mounting hole (114) which are axially communicated and parallel to each other, the first rotor assembly (2) installed in the first rotor mounting hole (113) drives the first motor shaft (21) to rotate, and the second rotor assembly (3) installed in the second rotor mounting hole (114) drives the second motor shaft (31) to rotate;
the common stator core comprises a core outer ring part (117), a first stator tooth (111) and a second stator tooth (112) which are oppositely arranged and inwards extend towards each other are formed in the core outer ring part (117), a first rotor mounting hole (113) and a second rotor mounting hole (114) are formed between the first stator tooth (111) and the second stator tooth (112), and the direction of the central connection line of the first rotor mounting hole (113) and the second rotor mounting hole (114) is perpendicular to the oppositely extending direction of the first stator tooth (111) and the second stator tooth (112).
2. The electrical machine according to claim 1, wherein the first stator tooth (111) and the second stator tooth (112) are identical in shape and symmetrical about the hole center line.
3. The electric machine according to claim 2, wherein the crest line (118) of the first stator tooth (111) comprises 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 electric machine according to claim 3, wherein the tooth top of the first stator tooth (111) comprises two side tooth shoes (116) and a central pointed portion (115) extending towards the intermediate air gap between the first and second rotor mounting holes (113, 114), the central pointed portion (115) being formed by cutting the tooth top from 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), the central pointed portion (115) of the first stator tooth (111) and the central pointed portion (115) of the second stator tooth (112) being spaced apart from each other, the tooth shoes (116) extending in a wrap-around manner along an outer circumferential arc line of the first or second rotor mounting hole (113, 114).
5. The electrical machine according to claim 1, wherein the first stator tooth (111) is provided with a first stator winding (12) and the second stator tooth (112) is provided with a second stator winding (13), and wherein 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), and wherein the stator magnetic field is distributed in a spindle shape.
6. The motor according to any one of claims 1 to 5, wherein the motor housing (8) comprises an upper housing assembly (81) and a lower housing assembly (82), 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), the bottom end of each motor shaft is fixedly connected with a commutator (4), and each commutator (4) is in sliding contact with a plurality of carbon brushes (5).
7. A food processor, characterized in that, food processor include a plurality of stirring knife tackle spares and according to any one of claims 1-6 motor (100), each stirring knife tackle spare installs the top at each motor shaft and follows each the motor shaft rotation one-to-one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810140199.6A CN110149036B (en) | 2018-02-11 | 2018-02-11 | Motor and food processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810140199.6A CN110149036B (en) | 2018-02-11 | 2018-02-11 | Motor and food processor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110149036A CN110149036A (en) | 2019-08-20 |
| CN110149036B true CN110149036B (en) | 2021-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810140199.6A Active CN110149036B (en) | 2018-02-11 | 2018-02-11 | Motor and food processor |
Country Status (1)
| Country | Link |
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| CN (1) | CN110149036B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112421830A (en) * | 2019-08-23 | 2021-02-26 | 广东美的生活电器制造有限公司 | Motor, food processor and air supply device |
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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 |
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|---|---|---|---|---|
| JP2001128422A (en) * | 1999-10-25 | 2001-05-11 | Ebara Corp | Dual-axis synchronous motor |
| JP2008092752A (en) * | 2006-07-14 | 2008-04-17 | Tai-Her Yang | Associated structure where twin electric machines presenting coaxial input/output are arranged in parallel |
| CN103444060A (en) * | 2011-05-18 | 2013-12-11 | 丰田自动车株式会社 | Method for manufacturing double-axial parallel motor and cover assembly jig |
| CN206023522U (en) * | 2016-08-31 | 2017-03-15 | 王雄才 | Birotor brushed DC motor and electrical equipment |
| CN207994876U (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 | Motor and food cooking machine |
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