CN207994880U - Motor and food cooking machine - Google Patents

Abstract

The utility model discloses a kind of motor and food cooking machines, the motor (100) includes sharing field frame assembly, birotor assembly and the first motor axis (21) projected in parallel out from the birotor assembly and the second motor shaft (31), in the shared stator core of the shared field frame assembly be equipped with axially through birotor mounting hole, the birotor assembly being installed in the birotor mounting hole drives the first motor axis (21) and the second motor shaft (31) to pivot independently of each other, the shared field frame assembly includes stator winding, the birotor assembly includes rotor windings, the stator winding is connected in parallel with the rotor windings.The motor of the utility model realizes the mutual indepedent rotation of two rotor assemblies by the structure of single stator and double-rotor and its corresponding winding connection mode, the mechanicalness noise that motor generates during the work time is efficiently reduced, durability and job stability are substantially increased.

Description

Motor and food cooking machine

Technical field

The utility model is related to household electrical appliance technical fields, and in particular, to a kind of motor and food cooking machine.

Background technology

The technological deficiency of a variety of steerings or rotating speed cannot be exported simultaneously by being limited by existing motor, be had in the market parallel double The food cooking machine of cutter shaft structure generally can be anti-between two groups of mixing blade assemblies to realize by the way that rational mechanical mechanism is arranged To or differential speed rotation, to improve to the crush efficiencies of food materials.Wherein, which generally includes operator axis and secondary cutter shaft, main Cutter shaft is to directly drive rotation by the motor shaft of motor, and secondary cutter shaft then passes through the gear transmission structure between axis of operating Realize driven rotation.

However, said gear drive mechanism can make the noise of food cooking machine in the operating condition further increase, Seriously affect the usage experience of user；On the other hand, the complexity of structure is unfavorable for easily producing installation, is increasing to a certain degree Production difficulty and production cost are added.

Utility model content

For the drawbacks described above or deficiency of the prior art, the utility model provides a kind of motor and food cooking machine, energy It is enough to realize two kinds of steerings or the output of rotating speed in the case of low noise-reduction and optimization drive mechanism, effectively improve food cooking machine Crush efficiency.

To achieve the above object, the utility model provides a kind of motor, the motor include share field frame assembly, double turns Sub- assembly and the first motor axis and the second motor shaft projected in parallel out from the birotor assembly, the shared field frame assembly Share stator core in be equipped with axially through birotor mounting hole, the birotor being installed in the birotor mounting hole Assembly drives the first motor axis and the second motor shaft to pivot independently of each other, and the shared field frame assembly includes stator winding, The birotor assembly includes rotor windings, and the stator winding is connected in parallel with the rotor windings.

Optionally, the shared stator core includes iron core outer ring portion, and the iron core outer ring is formed with opposed type cloth in portion It sets and the first stator tooth inwardly stretched out toward each other and the second stator tooth and is located at first stator tooth and the second stator The birotor mounting hole between tooth, the birotor mounting hole include the first rotor mounting hole being mutually parallel and second turn The hole center line connecting direction of sub- mounting hole, the first rotor mounting hole and the second rotor mounting hole is perpendicular to first stator The opposed type of tooth and the second stator tooth stretches out direction, and the birotor assembly includes the first rotor assembly and the second rotor assembly, The first rotor assembly being installed in the first rotor mounting hole drives the first motor axis rotation, is installed on described Second rotor assembly in second rotor mounting hole drives the second motor shaft rotation.

Optionally, the stator winding includes winding described in the first stator winding and the winding of the first stator tooth setting Second stator winding of the second stator tooth setting, first stator winding are connected in series with the second stator winding.

Optionally, the rotor windings include the first rotor assembly the first rotor winding and second rotor it is total At the second rotor windings, the first rotor winding is connected in parallel with the second rotor windings.

Optionally, the motor further includes the first carbon brush and the second carbon of the commutator of first motor axis described in sliding contact The third carbon brush and the 4th carbon brush of the commutator of second motor shaft described in brush and sliding contact；

Wherein, in the parallel circuit of the first rotor winding and the second rotor windings, first carbon brush and third Carbon brush connects and is located at the same end of the parallel circuit, and second carbon brush connect with the 4th carbon brush and is located at the electricity in parallel The other end on road.

Optionally, the rotor windings include the first rotor assembly the first rotor winding and second rotor it is total At the second rotor windings, the first rotor winding is connected in series with the second rotor windings.

Optionally, the motor further includes the first carbon brush and the second carbon of the commutator of first motor axis described in sliding contact The third carbon brush and the 4th carbon brush of the commutator of second motor shaft, first carbon brush, the second carbon described in brush and sliding contact Brush, third carbon brush and the 4th carbon brush are sequentially connected in series, the electric current of the stator winding flow into one of end and electric current outflow end with The first carbon brush electrical connection, another one are electrically connected with the 4th carbon brush.

Optionally, the first rotor winding and the second rotor windings include multiturn coil, coil series connection described in multiturn, In parallel or connection in series-parallel composite joint.

Optionally, the first rotor winding and/or the second rotor windings are connected with the change resistance electricity with slide rheostat Road.

In addition, the utility model additionally provides a kind of food cooking machine, the food cooking machine includes above-mentioned motor.

Through the above technical solutions, the motor of the utility model is total provided with two rotors that can be rotated independently of each other At, and using the mode of connection between rational stator winding and rotor windings so that two motor shafts being mutually parallel need not It can be realized by mechanical drive modes such as gear engagements and synchronize independent pivot, effectively reduced the operating noise of motor and carry Its high durability and job stability.

Other features and advantages of the utility model will be described in detail in subsequent specific embodiment part.

Description of the drawings

Attached drawing is to be used to provide a further understanding of the present invention, an and part for constitution instruction, and following Specific implementation mode be used to explain the utility model together, but do not constitute limitations of the present invention.In the accompanying drawings：

Fig. 1 is the vertical view of the stator core in specific embodiment of the present utility model；

Fig. 2 is the side view for the motor for using the stator core in Fig. 1；

Fig. 3 is the sectional view of the motor in Fig. 2；

Fig. 4 is the main sectional view of the motor in Fig. 2；

Fig. 5 is the cross-sectional view of the motor in Fig. 2；

Fig. 6 is the circuit diagram of the motor in Fig. 2；

Fig. 7 is the first shunt excitation circuit diagram of the motor in Fig. 2；

Fig. 8 is second of shunt excitation circuit diagram of the motor in Fig. 2；

Fig. 9 is the third shunt excitation circuit diagram of the motor in Fig. 2；

Figure 10 is the first series excitation circuit diagram of the motor in Fig. 2；

Figure 11 is second of series excitation circuit diagram of the motor in Fig. 2；

Figure 12 is the third series excitation circuit diagram of the motor in Fig. 2；

Figure 13 is the 4th kind of series excitation circuit diagram of the motor in Fig. 2；

Figure 14 is the first compound excitation circuit diagram of the motor in Fig. 2；

Figure 15 is second of compound excitation circuit diagram of the motor in Fig. 2；

Figure 16 is the first circuit diagram for the motor that stator core is shared using permanent magnet；

Figure 17 is second of circuit diagram of the motor that stator core is shared using permanent magnet.

Reference sign：

100 motors

1 field frame assembly, 2 the 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 axis

22 the first rotor winding, 31 second motor shaft

32 second rotor windings, 51 first carbon brush

52 second carbon brush, 53 third carbon brush

54 the 4th carbon brush, 81 upper shell assembly

82 lower housing assemblies

111 first stator tooth, 112 second stator tooth

113 the first rotor mounting hole, 114 second rotor mounting hole

115 center corners, 116 tooth boot portion

117 iron core outer ring portion, 118 addendum line

Specific implementation mode

Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein Described specific implementation mode is only used for describing and explaining the present invention, and is not intended to limit the utility model.

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.

In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, top, bottom " is usually Be for direction shown in the drawings either for it is vertical, vertically or on gravity direction for each component mutual alignment Relationship description word.

The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

Present embodiments provide for a kind of stator cores 11.As shown in Figure 1, the stator core 11 includes iron core outer ring portion 117.The first stator tooth 111 and second for being formed with opposed type arrangement in the iron core outer ring portion 117 and inwardly stretching out toward each other Stator tooth 112, and between the first stator tooth 111 and the second stator tooth 112 and the first rotor arranged in parallel peace Fill hole 113 and the second rotor mounting hole 114.The hole line of centres side of the first rotor mounting hole 113 and the second rotor mounting hole 114 Direction is stretched out to perpendicular to the opposed type of the first stator tooth 111 and the second stator tooth 112.

When the winding mode of stator winding is reasonable, 11 unique stator odontoid of stator core can be guided effectively by fixed The magnetic induction line trend for the stator field that sub- winding energization generates, that is, enable the magnetic induction line to be distributed in first turn relatively independently In sub- mounting hole 113 and the second rotor mounting hole 114.In this way, in the first rotor mounting hole 113 and the second rotor mounting hole 114 In two rotor assemblies accordingly installing can independently of each other be pivoted under electromagnetic action, and put down from two rotor assemblies Two motor shafts that row stretches out need not be also driven by the mechanical structure of additional form, effectively low to have subtracted when motor works Noise.In addition, the structure of the stator core 11 of present embodiment is more simple compared with structures such as machine drivings, life is advantageously reduced Difficulty is produced, to improve production efficiency and reduce production cost.

Under some specific work condition environments, it may be necessary to which two motor shafts of motor all have roughly the same output work Rate.At this point, the first stator tooth 111 of stator core 11 and the second stator tooth 112 can be preferably arranged to shape it is identical and about Hole line of centres symmetrical structure, to make stator field be evenly distributed on the first rotor mounting hole 113 and the installation of the second rotor In hole 114, that is, there is roughly the same magnetic field shape and magnetic density.At this point, the global shape of stator core 11 is also more It is well-balanced, it is ensured that motor has the shape of preferable inner space utilization rate and generous beauty.

Specifically, the addendum line 118 of the first stator tooth 111 includes the portion perimeter circular arc line of the first rotor mounting hole 113 With the portion perimeter circular arc line of the second rotor mounting hole 114, and in the shape phase of the first stator tooth 111 and the second stator tooth 112 With and about the hole line of centres it is symmetrical in the case of, the tooth top wire shaped of the two is also identical.The shape of the addendum line can Make that there is smaller air gap between stator tooth and rotor assembly, is more advantageous to distribution of the stator field in rotor mounting hole.

Further, the tooth crest of the first stator tooth 111 is equipped with towards the first rotor mounting hole 113 and the second rotor and installs The center corners 115 that intermediate air gap between hole 114 extends.It should be noted that the center corners 115 is exactly by the At the top of the portion perimeter circular arc line cutting teeth of the portion perimeter circular arc line of one rotor mounting hole 113 and the second rotor mounting hole 114 And formed.When two portion perimeter circular arc lines intersect or is tangent, the top of center corners 115 is formed as pointed shape Shape；When two portion perimeter circular arc lines are non-intersecting, the top of center corners 115 is then formed as approximate angular shape, this When two portion perimeter circular arc lines between spacing should not be too large, it is no that it will cause stator fields at center corners 115 Magnetic density is excessive, to cause the stress between two rotor assemblies to interfere.

In addition, tooth crest is additionally provided with the tooth boot portion 116 for the both sides for being formed in center corners 115, the tooth boot portion 116 is in packet Extend along the periphery circular arc line of the first rotor mounting hole 113 or the second rotor mounting hole 114 around shape.The setting of tooth boot portion 116 Be conducive to expand overlay area of the stator field in the first rotor mounting hole 113 or the second rotor mounting hole 114, it is ensured that rotor Assembly can improve the job stability of motor sustainedly and stably rotate at high speed.

It can be seen from the above, to avoid two rotor assemblies in the first rotor mounting hole 113 and the second rotor mounting hole 114 Stress interference is generated, the stator field distribution at center corners 115 should be reduced to the greatest extent.In addition to as far as possible by center corners 115 are set as except tip shape, can also be by the middle apex of the heart of the center corners 115 of the first stator tooth 111 and the second stator tooth 112 Corner 115 is preferably arranged to the structure that interval disconnects.Under this structure, two can exist between apex of the heart corner 115 among the above compared with Big air gap, and the magnetic conductivity of air gap is smaller for the magnetic conductivity of stator core 11, to make the first rotor mounting hole 113 and the second transitional region between rotor mounting hole 114 almost without covering stator field, avoid two rotor assemblies it Between there is the case where stress interference, it is ensured that two rotor assemblies can pivot independently of each other.

But the spacing of two center corners 115 is also unsuitable too small, otherwise can be covered in the first rotor mounting hole 113 Or second effective stator field region in rotor mounting hole 114 becomes smaller.Hereby, in the present embodiment by the first stator tooth The spacing of 111 center corners 115 and the center corners 115 of the second stator tooth 112 is preferably arranged to 5mm~8mm.

Further, identical as the shape of the second stator tooth 112 in the first stator tooth 111 and symmetrical about the hole line of centres In the case of, two rotor assemblies being mounted in the first rotor mounting hole 113 and the second rotor mounting hole 114 in order to prevent exist It is interfered when rotation, in the radius R of the first rotor mounting hole 113, the radius r of the second rotor mounting hole 114 and hole It is set as meeting relationship between the length s of heart line：s>r+R.

In addition, present embodiment additionally provides a kind of field frame assembly 1.As shown in Figure 2 and Figure 5, which includes upper The stator core 11 stated.Wherein, the stator winding of field frame assembly 1 include wind the first stator tooth 111 setting the first stator around Group 12 and the second stator winding 13 of winding the second stator tooth 112 setting.First stator winding 12 and the second stator winding 13 The stator field of generation is covered in the first rotor mounting hole 113 and the second rotor mounting hole 114.Also, by being rationally arranged The shape of first stator tooth 111 and the second stator tooth 112, the stator field that stator winding generates can be in that spindle shape is distinguished It is distributed in the first rotor mounting hole 113 and the second rotor mounting hole 114, so that being mounted on the first rotor mounting hole 113 It can be pivoted independently of each other with two rotors in the second rotor mounting hole 114.

Present embodiment additionally provides a kind of motor 100, as shown in Figures 2 to 5, the motor 100 include motor casing 8 and Mutually independent multiple rotor assemblies, each rotor assembly in motor cavity in motor casing 8 are set and are extended with corresponding motor Axis, each motor shaft are mutually parallel and corresponding rotor assembly can be followed to pivot.

The structure that multiple rotor assemblies of motor 100 pivot independently of each other can be realized a kind of, multiple rotor assemblies It is mounted in the rotor mounting hole of multiple field frame assemblies correspondingly, multiple field frame assembly is installed in the same motor casing In 8 and multiple rotor mounting holes are axial pass-through holes.By being arranged the structure of the more rotors of the multiple stators, more of motor 100 Transmission output need not be carried out by mechanical transmission mechanisms such as gear engagements between parallel electrical machinery axis, to reduce the machine of motor shaft Tool vibrates and mechanical wear, service life are effectively improved.But the structure wants the current overload ability of motor 100 Ask higher, and in the case of undertension, motor 100 is it is possible that certain root motor shaft rotates slow or intermittent stalling etc. Situation.In addition, in the case of coordinating running in multiple stator sames, the operating noise of motor 100 may not most be had The low of effect subtracts.

Further to solve the deficiency of above structure, present embodiment, which additionally provides another kind, can realize motor 100 Single stator and double-rotor structure that multiple rotor assemblies pivot independently of each other.In this configuration, motor 100 includes that shared stator is total At, birotor assembly and the first motor axis 21 projected in parallel out from birotor assembly and the second motor shaft 31, it is total to share stator At shared stator core in be equipped with axially through birotor mounting hole, the birotor assembly being installed in birotor mounting hole First motor axis 21 and the second motor shaft 31 is driven to pivot independently of each other.

In the present embodiment, said stator assembly 1 can be used in shared field frame assembly, and shares the shared fixed of field frame assembly Sub- iron core is said stator iron core 11.Specifically, birotor mounting hole includes 113 He of the first rotor mounting hole being mutually parallel Second rotor mounting hole 114, birotor assembly include the first rotor assembly 2 and the second rotor assembly 3, are installed on the first rotor peace The first rotor assembly 2 filled in hole 113 drives first motor axis 21 to rotate, second be installed in the second rotor mounting hole 114 Rotor assembly 3 drives the rotation of the second motor shaft 31.Also, the rotor windings of birotor assembly include the of the first rotor assembly 2 Second rotor windings 32 of one rotor windings 22 and the second rotor assembly 3.

As it can be seen that the motor 100 for using single stator and double-rotor structure in present embodiment can effectively make up it is above-mentioned more The deficiency of the more rotor structures of stator, has the advantages that operating noise is small, service life is long and job stability is high.

Specifically, the motor casing 8 of motor 100 includes upper shell assembly 81 and lower housing assembly 82, the top of each motor shaft End stretches out upper shell assembly 81 and lower housing assembly 82 is stretched out in bottom end.Wherein, the top position of upper shell assembly 81 with And the bottom position of lower housing assembly 82 is both provided with the bearing 7 for supporting each motor shaft.The bottom end of each motor shaft is equal It is connected with commutator 4 one by one, the 4 equal sliding contact of each commutator is mounted on multiple carbon in multiple carbon brush holders 6 correspondingly Brush 5.

And for using the motor 100 of single stator and double-rotor structure, the sliding of commutator 4 of first motor axis 21 connects Touching has the first carbon brush 51 and the second carbon brush 52, and then sliding contact has third carbon brush 53 and the 4th to the commutator 4 of the second motor shaft 31 Carbon brush 54.

In addition, Fig. 6 show the one of which circuit connecting mode of motor 100.Wherein, the anode of power supply is connected to first The electric current of stator winding 12 flows into end, and the electric current outflow end shunting of the first stator winding 12 is connected to the first rotor assembly 2 and the On two rotor assemblies, a 3 corresponding carbon brush 5, the first rotor assembly 2 and the second rotor assembly 3 it is corresponding another The electric current that carbon brush 5 is then connected to the second stator winding 13 simultaneously flows into end, and the electric current outflow end of final second stator winding 13 connects It is connected to power cathode, to make motor 100 form complete electrical circuit.

When passing through the second rotor windings in the first rotor winding 22 and the second rotor assembly 3 in the first rotor assembly 2 When 32 current direction is identical, the first rotor assembly 2 is identical with the pivotal orientation of the second rotor assembly 3；When current direction is opposite When, the pivotal orientation of the first rotor assembly 2 and the second rotor assembly 3 is opposite.Determine in present embodiment it can be seen that using The motor 100 of sub- iron core 11 can make the first rotor assembly 2 and the second rotor assembly 3 in the same direction or to reversely rotate simultaneously, and electric Stream direction then can be by adjusting stator winding and between carbon brush the order of connection switch.

In addition, when identical with the above-mentioned size of current of the second rotor windings 32 by the first rotor winding 22, first turn Sub- assembly 2 and the second rotor assembly 3 to rotate at the same speed；When size of current difference, the first rotor assembly 2 and the second rotor assembly 3 with differential speed rotation.The size of electric current can be adjusted by changing the resistance of circuit, for example, can be by the way that add in circuit can The resistive element of adjusting or by change rotor windings coil turn come regulation resistance.

Foregoing circuit connection type should be regarded as the explanation of the function to the motor 100 of the utility model, without that should regard For limitations of the present invention.In other words, such as series excitation, shunt excitation can also be used between stator winding and rotor windings and are answered It the connection type for being suitable for different operating modes such as encourages, does not repeat one by one herein.Furthermore motor 100 can also be used and this embodiment party The identical permanent magnetism iron core of shape and structure of stator core 11 in formula, at this time motor 100 can be omitted the setting of stator winding, should Structure is suitable for permanent magnet DC motor.

Specifically, present embodiment will also provide following several different circuit connection methods about above-mentioned motor 100. First, as shown in Figure 7 to 9, by being connected in parallel (i.e. shunt excitation) between the stator winding and rotor windings of motor 100, and the By being connected in series between one stator winding 12 and the second stator winding 13.

In the case shown in figure 7, the second of the first rotor winding 22 of the first rotor assembly 2 and the second rotor assembly 3 By being connected in parallel between rotor windings 32.Also, in the parallel circuit of the first rotor winding 22 and the second rotor windings 32, First carbon brush 51 connect with third carbon brush 53 and positioned at the same end of parallel circuit, and the second carbon brush 52 is connect simultaneously with the 4th carbon brush 54 Positioned at the other end of parallel circuit.In other words, at this time between stator winding and the first rotor winding 22 and stator winding and By being connected in parallel between two rotor windings 32.

Or in the case of figure 8, by being connected in series between the first rotor winding 22 and the second rotor windings 32. Wherein, the first carbon brush 51, the second carbon brush 52, third carbon brush 53 and the 4th carbon brush 54 are sequentially connected in series, and the electric current stream of stator winding Enter one of end and electric current outflow end to be electrically connected with the first carbon brush 51, another one is electrically connected with the 4th carbon brush 54.I.e. at this time One rotor windings 22 and the second rotor windings 32 are first connected, then whole to be connected in parallel again with stator winding.

In addition, in the situation illustrated in figure 9, one of the first rotor winding 22 and the second rotor windings 32 are fixed with first By being connected in parallel between sub- winding 12, also by being connected in parallel between another one and the second stator winding 13.For example, when first Stator winding 12 is connected in parallel with the first rotor winding 22 and the second stator winding 13 is connected in parallel with the second rotor windings 32 When, the first carbon brush 51, the second carbon brush 52, third carbon brush 53 and the 4th carbon brush 54 are sequentially connected in series, and the electricity of the first stator winding 12 Stream inflow end is electrically connected with the first carbon brush 51 and its electric current outflow end is electrically connected with the second carbon brush 52, the second stator winding 13 Electric current inflow end is then electrically connected with third carbon brush 53 and electric current outflow end is electrically connected with the 4th carbon brush 54.

Since the mechanical hardware features of the motor 100 using one of above-mentioned three kinds of shunt excitation structures are obvious, the motor 100 compared with Rotating speed suitable for motor shaft is not by load effect and convenient in the operating mode occasion of a wide range of interior speed governing.

As shown in Figure 10 to Figure 13, present embodiment additionally provides the stator winding and rotor windings string of a kind of motor 100 The circuit connecting mode of connection connection (i.e. series excitation).

Specifically, shown in Figure 10 and Figure 11 it is feelings that the first rotor winding 22 and the second rotor windings 32 are connected in parallel Condition.As shown in Figure 10, one of the first stator winding 12 and the second stator winding 13 and the electric current of rotor windings flow into end It is connected in series with, the electric current outflow end of another one and rotor windings is connected in series with, i.e. the first stator winding 12 and the second stator at this time It is not to be directly connected in series between winding 13.And as shown in Figure 11, the first stator winding 12 is then gone here and there with the second stator winding 13 The electric current that connection is connected to rotor windings flows into the homonymy of end or electric current outflow end, i.e. the first stator winding 12 and the second stator at this time It is directly connected in series between winding 13.

In addition, shown in Figure 12 and Figure 13 being the first rotor winding 22 and the case where the second rotor windings 32 are connected in series with. As shown in Figure 12, one of the first stator winding 12 and the second stator winding 13 flow into end with the electric current of rotor windings and connect The electric current outflow end of connection, another one and rotor windings is connected in series with, i.e. the first stator winding 12 and the second stator winding at this time It is not to be directly connected in series between 13.And as shown in Figure 13, the first stator winding 12 is connected in series with the second stator winding 13 The homonymy of end or electric current outflow end is flowed into the electric current of rotor windings, i.e. the first stator winding 12 and the second stator winding 13 at this time Between be directly connected in series with.

Mechanical software feature using the motor 100 of one of above-mentioned four kinds of series excitation structures is more apparent, at this time turn of its motor shaft Speed can quickly decline when load torque increases, and relatively be suitable for the operating modes occasions such as kitchen appliance.

Furthermore a kind of as shown in FIG. 14 and 15, the first stator winding 12 and second of motor 100 in present embodiment One of stator winding 13 is connected in parallel with rotor windings, and another one is connected in series with rotor windings, i.e., stator winding with turn It is compound excitation structure between sub- winding.

Shown in Figure 14, the first rotor winding 22 of motor 100, the second rotor windings 32 and the second stator around By being connected in parallel between group 13.At this point, in the parallel circuit of the first rotor winding 22 and the second rotor windings 32, first Carbon brush 51 connect with third carbon brush 53 and positioned at the same end of parallel circuit, and the second carbon brush 52 connect and is located at the 4th carbon brush 54 The other end of parallel circuit.

And in the case that shown in figure 15, first lead between the first rotor winding 22 of motor 100 and the second rotor windings 32 It crosses and is connected in series with, then the entirety of rotor windings is in parallel with the second stator winding 13 again.At this point, the first carbon brush 51, the second carbon brush 52, third carbon brush 53 and the 4th carbon brush 54 are sequentially connected in series, and the electric current of the second stator winding 13 flows into end and electric current outflow end One of be electrically connected with the first carbon brush 51, another one is electrically connected with the 4th carbon brush 54.

When connecting between the first rotor winding 22 and the second rotor windings 32, the resistance of the branch where rotor windings compared with Greatly, that is, flowing through keeps the electric current of the branch too small, and the output power for be easy to causeing rotor assembly is too small and smooth cannot rotate.To keep away Exempt from the appearance of the situation, the line of one of rotor windings can will be connected in parallel in the first stator winding 12 and the second stator winding 13 Circle the number of turns is preferably arranged to the coil turn more than another one, and coil turn increases the resistance that can make the stator winding branch Increase, to reduce the shunting to total current so that electric current can more flow to the branch where rotor windings to ensure it Output power.

Using one of above two compound excitation structure motor 100 mechanical property between with shunt excitation structure and series excitation structure Motor between, when the magnetomotive force of shunt excitation plays a major role, the mechanical property of motor 100 is closer to shunt-excited machine, when When the magnetomotive force of series excitation plays a major role, the mechanical property of motor 100 is then closer to series machine.In other words, compound excitation electricity Machine both can apply to the softer operating mode occasion of mechanical property, can also apply to the harder operating mode occasion of mechanical property.

Further, as shown in Figure 16 and Figure 17, present embodiment additionally provides a kind of shared stator core of motor 100 For permanent magnet when circuit connecting mode, at this time stator field be not necessarily to generate by the current excitation of stator winding, and only by Share stator core itself generate covering the first rotor mounting hole 113 and the second rotor mounting hole 114 have spindle shape Stator field.

Shown in Figure 16, pass through string between the first rotor winding 22 of motor 100 and the second rotor windings 32 Connection connection.The first carbon brush 51 of motor 100, the second carbon brush 52, third carbon brush 53 and the 4th carbon brush 54 are sequentially connected in series at this time.

Alternatively, shown in Figure 17, lead between the first rotor winding 22 of motor 100 and the second rotor windings 32 It crosses and is connected in parallel.At this point, in the parallel circuit of the first rotor winding 22 and the second rotor windings 32, the first carbon brush 51 and third Carbon brush 53 connects and positioned at the same end of parallel circuit, and the second carbon brush 52 connect with the 4th carbon brush 54 and positioned at the another of parallel circuit One end.

The motor 100 that stator core is shared using permanent magnet is single stator and double-rotor magneto.With above-mentioned excitation electricity Machine is compared, and magneto, which is not required to the extraneous energy that provides, can generate stable stator field, have simple in structure, reliability and effect The high performance characteristics of rate are relatively specific for low power operating mode occasion.

In addition, for any one of the above motor 100, the first rotor winding 22 and the second rotor windings 32 may each comprise Multiturn coil, the multiturn coil can connect in such a way that series, parallel or connection in series-parallel are compound etc..Also, the first rotor winding 22 The change resistance circuit with slide rheostat can be connected to adjust 2 He of the first rotor assembly respectively with the second rotor windings 32 The rotating speed of second rotor assembly 3, to realize the synchronized or differential output of first motor axis 21 and the second motor shaft 31.

Present embodiment additionally provides a kind of food cooking machine using any one of the above motor 100.The food cooking Machine further includes multiple mixing blade assemblies, and each mixing blade assembly is mounted on the top of each motor shaft and follows each correspondingly Motor shaft described in root rotates.For example, when food cooking machine is set there are two when mixing blade assembly, it is double that single stator can be used in motor 100 The structure of rotor, at this time two mixing blade assemblies can be separately mounted to the top of first motor axis 21 and the second motor shaft 31.Its In, when first motor axis 21 and the second motor shaft 31 to reversely rotate or when differential speed rotation in the same direction, food materials and mixing blade assembly Larger relative velocity is remained between rotating blade, is conducive to the crush efficiency for improving food cooking machine.

Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail above in association with attached drawing Detail in the above embodiment can be to the skill of the utility model in the range of the technology design of the utility model Art scheme carries out a variety of simple variants, these simple variants belong to the scope of protection of the utility model.

It is further to note that specific technical features described in the above specific embodiments, in not lance It in the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the utility model is to each The possible combination of kind no longer separately illustrates.

In addition, arbitrary combination can also be carried out between a variety of different embodiments of the utility model, as long as it is not disobeyed The thought for carrying on the back the utility model, equally should be considered as content disclosed in the utility model.

Claims (10)

1. a kind of motor, which is characterized in that the motor (100) includes sharing field frame assembly, birotor assembly and from described The first motor axis (21) and the second motor shaft (31) that birotor assembly projects in parallel out, the shared stator of the shared field frame assembly In iron core be equipped with axially through birotor mounting hole, be installed in the birotor mounting hole the birotor assembly driving The first motor axis (21) and the second motor shaft (31) pivot independently of each other, and the shared field frame assembly includes stator winding, The birotor assembly includes rotor windings, and the stator winding is connected in parallel with the rotor windings.

2. motor according to claim 1, which is characterized in that the shared stator core includes iron core outer ring portion (117), Opposed type arrangement is formed in iron core outer ring portion (117) and the first stator tooth (111) for inwardly stretching out toward each other and the Two stator tooths (112) and the birotor installation between first stator tooth (111) and the second stator tooth (112) Hole, the birotor mounting hole include the first rotor mounting hole (113) being mutually parallel and the second rotor mounting hole (114), institute The first rotor mounting hole (113) is stated with the hole center line connecting direction of the second rotor mounting hole (114) perpendicular to first stator The opposed type of tooth (111) and the second stator tooth (112) stretch out direction, the birotor assembly include the first rotor assembly (2) and Second rotor assembly (3) is installed on described in the first rotor assembly (2) driving in the first rotor mounting hole (113) First motor axis (21) rotates, second rotor assembly (3) the driving institute being installed in the second rotor mounting hole (114) State the second motor shaft (31) rotation.

3. motor according to claim 2, which is characterized in that the stator winding includes winding first stator tooth (111) the second stator winding (13) for the first stator winding (12) and winding the second stator tooth (112) setting being arranged, institute The first stator winding (12) is stated to be connected in series with the second stator winding (13).

4. motor according to claim 3, which is characterized in that the rotor windings include the first rotor assembly (2) The first rotor winding (22) and second rotor assembly (3) the second rotor windings (32), the first rotor winding (22) it is connected in parallel with the second rotor windings (32).

5. motor according to claim 4, which is characterized in that the motor (100) further includes first described in sliding contact Second motor shaft described in the first carbon brush (51) of the commutator (4) of motor shaft (21) and the second carbon brush (52) and sliding contact (31) the third carbon brush (53) and the 4th carbon brush (54) of commutator (4)；

Wherein, in the parallel circuit of the first rotor winding (22) and the second rotor windings (32), first carbon brush (51) the same end of the parallel circuit, second carbon brush (52) and the 4th carbon brush are connect and are located at third carbon brush (53) (54) it connects and positioned at the other end of the parallel circuit.

6. motor according to claim 3, which is characterized in that the rotor windings include the first rotor assembly (2) The first rotor winding (22) and second rotor assembly (3) the second rotor windings (32), the first rotor winding (22) it is connected in series with the second rotor windings (32).

7. motor according to claim 6, which is characterized in that the motor (100) further includes first described in sliding contact Second motor shaft described in the first carbon brush (51) of the commutator (4) of motor shaft (21) and the second carbon brush (52) and sliding contact (31) the third carbon brush (53) and the 4th carbon brush (54) of commutator (4), first carbon brush (51), the second carbon brush (52), Three carbon brush (53) and the 4th carbon brush (54) are sequentially connected in series, and the electric current of the stator winding flows into one of end and electric current outflow end It is electrically connected with first carbon brush (51), another one is electrically connected with the 4th carbon brush (54).

8. the motor according to any one of claim 4~7, which is characterized in that the first rotor winding (22) and Second rotor windings (32) include multiturn coil, coil series, parallel or connection in series-parallel composite joint described in multiturn.

9. the motor according to any one of claim 4~7, which is characterized in that the first rotor winding (22) and/ Or second rotor windings (32) be connected with the change resistance circuit with slide rheostat.

10. a kind of food cooking machine, which is characterized in that the food cooking machine includes according to any one of claim 1~9 The motor (100).