Motor and stirring equipment with same

Abstract

The motor comprises a stator assembly and a control module, the stator assembly comprises a stator iron core and multi-phase stator windings, the multi-phase stator windings are respectively arranged on the stator iron core, each phase stator winding comprises a plurality of turns of coil panels, the coil panels are arranged on the stator iron core, and the control module is arranged on the control module. The control module is electrically connected with the multi-phase stator winding to control the on-off state of each turn of coil panel, and the motor is configured to change the flux linkage of the motor by changing the number of used turns of the stator winding. The motor provided by the embodiment of the utility model not only can be compatible with high-speed and low-speed operation, but also has the advantages of small size, low cost, low noise and the like, and the performance of the motor is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field especially is related to a motor and have its stirring equipment. BACKGROUND

[0002] When the motor is applied to the multifunctional food processor, the multifunctional food processor not only needs to be used for high-speed stirring food materials, but also needs to be low-speed cooking or kneading, so the motor needs to meet high and low speed operation at the same time.

[0003] However, the existing motor for the multifunctional food processor generally adopts a series excited motor, which is affected by the mechanical characteristics of the motor, resulting in poor compatibility of high and low speed of the motor, and the problems of insufficient torque at low speed operation or unable to meet the speed standard at high speed operation.

[0004] In the prior art, in order to solve the above problems, a speed reduction structure is added to the motor, the motor is replaced by a reluctance motor or the outer diameter of the motor is increased, but the above scheme will increase the volume of the motor, resulting in increased cost of the motor. UTILITY MODEL CONTENTS

[0005] The utility model aims at least to solve one of the technical problems existing in the prior art. Therefore, the utility model provides a motor, which can realize compatible high and low speed, and can avoid increasing the volume and cost of the motor to a certain extent, solving the technical problems of poor compatibility of high and low speed of the motor in the prior art or increasing the volume of the motor when ensuring the compatibility of high and low speed of the motor.

[0006] The utility model also aims at providing a stirring equipment with the above motor.

[0007] The motor according to the utility model embodiment comprises a stator assembly, the stator assembly comprises a stator core and a multi-phase stator winding, the multi-phase stator winding is arranged on the stator core respectively, each phase of the stator winding comprises a multi-turn coil disc, a control module is electrically connected with the multi-phase stator winding respectively to control the on-off state of each turn of the coil disc, and the motor is configured to change the flux linkage of the motor by changing the number of turns of the stator winding.

[0008] According to the motor of the embodiment of the utility model, by setting each phase stator winding to include multiple turns of coil disc, and controlling the on-off state of each turn of coil disc by the control module, the flux linkage of the motor is changed, so that the flux linkage of the motor is adjustable, when the motor needs to output high speed, the flux linkage can be reduced by reducing the number of turns of the stator winding, so that the no-load speed of the motor is improved, when the motor needs to output low speed and large torque, the flux linkage of the motor can be improved by increasing the number of turns of the stator winding, so that the output torque of the motor is improved and the no-load speed is reduced, so that the motor can not only be compatible with high and low speed operation, but also has the advantages of small size, low cost and low noise, and the performance of the motor is improved.

[0009] In some embodiments, each phase of the stator winding includes a first part and a second part, the first part includes at least one turn of the coil disc, and the second part includes multiple turns of the coil disc, the multiple turns of the coil disc are connected in series, the number of turns of the first part is less than the number of turns of the second part, and the control module controls the first part or the second part to be powered on to change the flux linkage of the motor.

[0010] In some embodiments, the number of turns of the coil disc of each phase of the stator winding is k, and 2≤k≤5.

[0011] In some embodiments, the multiple turns of the coil disc of each phase of the stator winding are connected in parallel.

[0012] In some embodiments, each phase of the stator winding includes a third part and a fourth part, the third part includes multiple turns of the coil disc, the fourth part includes at least one turn of the coil disc, the number of turns of the fourth part is less than the number of turns of the third part, and the control module controls the third part or the fourth part to be powered on to change the flux linkage of the motor.

[0013] In some embodiments, a part of the coil disc in each phase of the stator winding is connected in series, and another part of the coil disc is connected in parallel.

[0014] In some embodiments, each phase of the stator winding includes a fifth part and a sixth part, the multiple turns of the coil disc in the fifth part are connected in parallel, the multiple turns of the coil disc in the sixth part are connected in series, and the control module controls the fifth part or the sixth part to be powered on to change the flux linkage of the motor.

[0015] In some embodiments, the outgoing line end of the multi-phase stator winding is located on the same side of the radial of the central axis of the stator core.

[0016] In some embodiments, the motor further includes a rotor assembly, and the rotor assembly is located on the inner side of the stator assembly.

[0017] According to the stirring equipment of the embodiment of the utility model, through adopt aforementioned motor, with guarantee the working performance of stirring equipment, and avoid increasing the size of stirring equipment to a certain extent, promote user experience.

[0018] According to the stirring equipment of the embodiment of the utility model, through adopt aforementioned motor, with guarantee the working performance of stirring equipment, and avoid increasing the size of stirring equipment to a certain extent, promote user experience.

[0019] The additional aspects and advantages of the utility model will become apparent from the following description, or will be appreciated by practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the utility model will become apparent and more readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0021] Figure 1 It is the explosion map of motor of some embodiments of the utility model.

[0022] Figure 2 It is the explosion map of stator assembly of some embodiments of the utility model.

[0023] Figure 3 It is the wiring diagram of stator winding of some embodiments of the first aspect of the utility model.

[0024] Figure 4 It is the wiring diagram of stator winding of some embodiments of the second aspect of the utility model.

[0025] Figure 5 It is the wiring diagram when the fourth part of stator winding of some embodiments of the second aspect of the utility model is electrified.

[0026] Figure 6 It is the wiring diagram when the third part of stator winding of some embodiments of the second aspect of the utility model is electrified.

[0027] Figure 7 It is the wiring diagram of stator winding of some embodiments of the third aspect of the utility model.

[0028] Figure 8 It is the wiring diagram when the fifth part of stator winding of some embodiments of the third aspect of the utility model is electrified.

[0029] Figure 9 It is the wiring diagram when the sixth part of stator winding of some embodiments of the third aspect of the utility model is electrified.

[0030] REFERENCE NUMERALS:

[0031] 1000, motor;

[0032] 100, stator assembly;

[0033] 110, stator core;

[0034] 120, stator winding;

[0035] 121, coil disc; 128, outgoing terminal;

[0036] 130, wire holder;

[0037] 200, control module;

[0038] 300, rotor assembly;

[0039] 310, rotor core; 320, motor shaft;

[0040] 400, first end cover; 500, second end cover; 600, support bearing. DETAILED DESCRIPTION

[0041] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0042] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0043] The motor 1000 of the embodiments of the present application is described below with reference to the drawings of the specification.

[0044] In combination with Figure 1 , Figure 2 and Figure 3 , the motor 1000 according to the embodiments of the present application comprises a stator assembly 100 and a control module 200.

[0045] Among them, in combination with Figure 1 and Figure 2As shown, the stator assembly 100 comprises a stator core 110 and a multi-phase stator winding 120, the multi-phase stator winding 120 is respectively arranged in the stator core 110, each phase stator winding 120 comprises a multi-turn coil disc 121.

[0046] In some embodiments, in combination with Figure 1 and Figure 2 As shown, the stator assembly 100 further comprises a wire holder 130, the multi-phase stator winding 120 is arranged in the stator core 110 through the wire holder 130, which can reduce the difficulty of fixing the multi-phase stator winding 120 while achieving the arrangement of the multi-phase stator winding 120 in the stator core 110.

[0047] In some embodiments, the multi-phase stator winding 120 is a three-phase winding.

[0048] In combination with Figure 1 , Figure 2 and Figure 3 As shown, the control module 200 is electrically connected with the multi-phase stator winding 120 to control the on-off state of each turn coil disc 121, and the motor 1000 is configured to change the flux linkage of the motor 1000 by changing the number of turns of the stator winding 120.

[0049] It should be noted that the motor 1000 has different requirements for the size of the flux linkage when outputting high speed or outputting low speed and large torque, wherein the motor 1000 needs a larger flux linkage when outputting low speed and large torque, and a smaller flux linkage when outputting high speed.

[0050] Based on this, the application designs a motor 1000 with adjustable flux linkage, specifically, each phase stator winding 120 is arranged to comprise a multi-turn coil disc 121, and a control module 200 is arranged to control the on-off state of each turn coil disc 121, when the control module 200 is used to control the on-off state of each turn coil disc 121, the number of turns of the stator winding 120 can be changed, thereby changing the flux linkage of the motor 1000, so as to realize the optimal matching of the flux linkage and the phase current, so that the motor 1000 can output high speed and low speed and large torque respectively under the premise of not increasing the volume, cost and noise of the motor 1000 too much, and the output performance is guaranteed, thereby guaranteeing the working performance of the motor 1000.

[0051] That is, the motor 1000 of the application not only guarantees the high-low speed compatibility of itself, but also has the advantages of small size, low cost and low noise.

[0052] According to the above structure, the motor 1000 of the embodiment of the utility model, every phase stator winding 120 of stator assembly 100 is set to include multi-turn coil disc 121, and control module 200 respectively connected with multi-phase stator winding 120 is set, so as to control the on-off state of every turn coil disc 121 by control module 200, so that the use of turns of stator winding 120 can be changed, so that the flux linkage of motor 1000 can be changed, so that motor 1000 can output high speed and low speed large torque respectively, and the output performance is guaranteed, and the working performance of motor 1000 is guaranteed.

[0053] Meanwhile, by the above-mentioned way, the high-low speed compatibility of the motor 1000 is ensured, and the volume of the motor 1000 and the noise generated by the motor 1000 during operation can be avoided to a certain extent, so that the motor 1000 is small in size, low in degree and low in noise.

[0054] In summary, the motor 1000 of the present application can not only be compatible with high-low speed operation, but also has the advantages of small size, low cost and low noise.

[0055] It can be understood that, compared with the prior art, the motor 1000 of the present application can not only be compatible with high-low speed operation, but also has the advantages of small size, low cost and low noise.

[0056] In some embodiments, each phase stator winding 120 includes a first part and a second part, the first part includes at least one turn coil disc 121, and the second part includes a plurality of turn coil discs 121, the plurality of turn coil discs 121 are connected in series, the number of turns of the first part is less than the number of turns of the second part, and the control module 200 controls the first part or the second part to be energized to change the flux linkage of the motor 1000. Here, the first part can include one turn coil disc 121 or a plurality of turn coil discs 121. When the first part includes a plurality of turn coil discs 121, the plurality of turn coil discs 121 of the first part are connected in series, the plurality of turn coil discs 121 of the second part are connected in series, and the number of turns of the plurality of turn coil discs 121 connected in series of the first part of each phase stator winding 120 is less than the number of turns of the plurality of turn coil discs 121 connected in series of the second part of each phase stator winding 120, so that the number of turns of the coil disc 121 connected in series of the first part and the number of turns of the coil disc 121 connected in series of the second part are different. When the control module 200 controls the first part or the second part to be energized, the flux linkage of the motor 1000 can be changed, so that the motor 1000 can output high speed and low speed large torque respectively, and the output performance is guaranteed, and the working performance of the motor 1000 is guaranteed.

[0057] In some embodiments, both the first part and the second part include multi-turn coil disks 121 connected in series, and the number of turns in the first part is less than the number of turns in the second part. This is to make the number of turns of the coil disks 121 connected in series in the first part different from the number of turns of the coil disks 121 connected in series in the second part, so as to facilitate the use of the first part and the second part to change the magnetic flux of the motor 1000 and ensure the working performance of the motor 1000.

[0058] In some embodiments, a switch can be provided for each turn of the coil disk 121. By controlling the on / off state of the coil disk 121, the number of turns of the coil disk 121 can be controlled, thereby changing the magnetic flux of the motor 1000 and reducing the difficulty of changing the magnetic flux of the motor 1000.

[0059] Among them, the switching on and off of the switching components can be controlled according to the set program.

[0060] In some embodiments, the first portion of the coil disk 121 has one turn, and the second portion of the coil disk 121 connected in series has multiple turns, so that the number of turns of the first portion of the coil disk 121 and the number of turns of the second portion of the coil disk 121 connected in series are different, so as to change the magnetic flux of the motor 1000.

[0061] With the above settings, when a higher speed is required for motor 1000, the control module 200 can be used to control the power supply to the first part, for example: Figure 3 The energization of Na1 / Nb1 / Nc1 in the stator winding 120 reduces the number of turns used, thereby reducing the magnetic flux and increasing the no-load speed of the motor 1000, thus ensuring that the motor 1000 can output high speed. When the motor 1000 needs to obtain low speed and high torque, the second part can be energized by the control module 200, for example: Figure 3 When (Na1+Na2+…+Nak) / (Nb1+Nb2+…+Nbk) / (Nc1+Nc2+…+Nck) is energized, the number of turns used in the stator winding 120 can be increased, thereby increasing the flux linkage of the motor 1000, increasing the torque of the motor 1000 and reducing the no-load speed, so as to ensure the working performance of the motor 1000.

[0062] It is worth noting that the above settings enable the motor 1000 to operate at both high and low speeds without increasing its size or operating noise. This allows the motor 1000 to maintain its performance while reducing its size and manufacturing cost.

[0063] In some embodiments, such as Figure 3 As shown, the on / off state of each coil disc 121 can be adjusted by setting segmented tap windings, reducing the difficulty of adjustment and enabling the motor 1000 to operate at both high and low speeds.

[0064] In some embodiments, the number of turns of the coil disc 121 of each phase stator winding 120 is k, and 2≤k≤5. When the number of turns k is large, a large number of taps are required, which requires more crossover wires and lead wires when the coil disc 121 is wired, and the external switching control circuit also requires more paths, resulting in a relatively complex structure of the motor 1000, and affecting the production efficiency and system cost of the motor 1000.

[0065] Therefore, the number of turns k of the coil disc 121 of each phase stator winding 120 is set to satisfy 2≤k≤5 in the present application, which not only ensures that each phase stator winding 120 includes a plurality of turns of coil discs 121, but also simplifies the structure of the motor 1000, improves the production efficiency of the motor 1000 to some extent, and is conducive to reducing the manufacturing cost of the motor 1000.

[0066] In specific examples, the number of turns k of the coil disc 121 of each phase stator winding 120 is 2, 3, 4, or 5.

[0067] In some embodiments, in combination with Figure 4 and Figure 5 As shown in FIGS. 1, 2, and 3, the plurality of turns of coil discs 121 of each phase stator winding 120 are connected in parallel. The parallel connection facilitates the improvement of overcurrent capacity, thereby ensuring the working performance of the motor 1000 to enable the motor 1000 to obtain low-speed large torque.

[0068] In some embodiments, each phase stator winding 120 includes a third part and a fourth part, the third part includes a plurality of turns of coil discs 121, and the fourth part includes at least one turn of coil disc 121. The number of turns of the fourth part is less than the number of turns of the third part. The control module 200 controls the energization of the third part or the fourth part to change the flux linkage of the motor 1000. Here, the fourth part can include one turn of coil disc 121 or a plurality of turns of coil disc 121. When the fourth part includes a plurality of turns of coil disc 121, the plurality of turns of coil disc 121 of the fourth part are connected in parallel, the plurality of turns of coil disc 121 of the third part are connected in parallel, and the number of turns of the plurality of turns of coil disc 121 of the fourth part of each phase stator winding 120 is less than the number of turns of the plurality of turns of coil disc 121 of the third part of each phase stator winding 120. Thus, the number of turns of the coil disc 121 connected in parallel in the third part and the number of turns of the coil disc 121 connected in parallel in the fourth part are different. When the control module 200 controls the energization of the third part or the fourth part, the motor 1000 can output high speed and low-speed large torque, respectively, and ensure the output performance, thereby ensuring the working performance of the motor 1000.

[0069] In some embodiments, the fourth part is a single-turn coil disc 121. That is, instead of changing the magnetic flux of the motor 1000 by controlling the number of turns of the coil disc 121 in series, the motor 1000 can also be controlled to output high speed and low speed and large torque respectively by controlling the energization of the multi-turn coil disc 121 in parallel or the single-turn coil disc 121, thereby ensuring the output performance and the working performance of the motor 1000.

[0070] In some embodiments, as shown in Figure 4 , each phase stator winding 120 includes a multi-turn coil disc 121. When the motor 1000 needs to obtain low speed and large torque, the third part is controlled to be energized by the control module 200 to realize parallel connection of the multi-turn coil disc 121 of the same phase, such as Na1∥Na2∥Na3 in Figure 4 and Figure 5 , and the multi-turn coil disc 121 in parallel can improve the overcurrent capacity, thereby ensuring the working performance of the motor 1000; when the motor 1000 needs to obtain high speed, the fourth part is controlled to be energized by the control module 200 to realize energization of the single-turn coil disc 121, such as Na1 / Nb1 / Nc1, Na2 / Nb2 / Nc2 or Na3 / Nb3 / Nc3 in Figure 4 and Figure 6 , and the use of the number of turns of the stator winding 120 is reduced, thereby realizing reduction of the magnetic flux, improving the no-load speed of the motor 1000, and enabling the motor 1000 to effectively output high speed to ensure the performance of the motor 1000.

[0071] Of course, in other embodiments, the fourth part can also include a two-turn coil disc 121, which can also reduce the number of turns of the stator winding 120 to some extent, thereby realizing reduction of the magnetic flux and improving the no-load speed of the motor 1000.

[0072] In some embodiments, as shown in Figure 7 , Figure 8 and Figure 9 , a part of the coil discs 121 in each phase stator winding 120 are connected in series and another part of the coil discs 121 are connected in parallel. When a part of the coil discs 121 are connected in series, the magnetic flux of the motor 1000 can be increased to realize improvement of the torque and reduction of the no-load speed, so that the motor 1000 can output low speed and large torque; when a part of the coil discs 121 are connected in parallel, that is, a smaller part of the coil discs 121 are connected in parallel, the magnetic flux of the motor 1000 can be reduced to realize improvement of the no-load speed of the motor 1000, so that the motor 1000 can output high speed, thereby making the motor 1000 compatible with high speed and low speed, and ensuring the working performance of the motor 1000.

[0073] In summary, the motor 1000 can be compatible with high and low rotating speeds by connecting a part of the coil disc 121 in series and another part of the coil disc 121 in parallel in each phase stator winding 120.

[0074] In some embodiments, the each phase stator winding 120 includes a fifth part and a sixth part, the multi-turn coil discs 121 in the fifth part are connected in parallel, the multi-turn coil discs 121 in the sixth part are connected in series, and the control module 200 controls the fifth part or the sixth part to be energized to change the flux linkage of the motor 1000. That is, the multi-turn coil discs 121 in parallel and the multi-turn coil discs 121 in series can also be controlled respectively to change the flux linkage of the motor 1000, so that the motor 1000 can output high rotating speed and low rotating speed large torque respectively, and the output performance is ensured, and thus the working performance of the motor 1000 is ensured.

[0075] In the description of the utility model, the features limited by "first", "second", "third", "fourth", "fifth", "sixth" can include one or more of the features explicitly or implicitly, for distinguishing the description features, and there is no order or difference.

[0076] In some embodiments, in combination with Figure 7 , Figure 8 and Figure 9 , the each phase stator winding 120 includes the multi-turn coil disc 121, when the motor 1000 needs to obtain low rotating speed large torque, the sixth part is controlled to be energized by the control module 200, so as to realize the series connection of the multi-turn coil discs 121 of the same phase, such as Figure 9 (Na1+Na2+Na3) / (Nb1+Nb2+Nb3) / (Nc1+Nc2+Nc3) energization, so as to increase the number of turns of the stator winding 120, and thus improve the flux linkage of the motor 1000, realize the improvement of the torque of the motor 1000 and the reduction of the no-load rotating speed; when the motor 1000 needs to obtain high rotating speed, the fifth part is controlled to be energized by the control module 200, so as to realize the parallel connection of a small part of the coil discs 121, such as Figure 8 (Na1∥Na2) / (Nb1∥Nb2) / (Nc1∥Nc2) energization, so as to realize the reduction of the flux linkage of the motor 1000, the improvement of the no-load rotating speed of the motor 1000, and the effective output of high rotating speed of the motor 1000, so as to ensure the performance of the motor 1000.

[0077] Of course, in other embodiments, the fifth part can also be set to include a single-turn coil disc 121, and the control module 200 is used to control the energization of the fifth part to energize the single-turn coil disc 121, such as: Na1 / Nb1 / Nc1, to reduce the number of turns of the stator winding 120, thereby reducing the magnetic flux linkage and increasing the no-load speed of the motor 1000, so that the motor 1000 can effectively output high speed to ensure the performance of the motor 1000.

[0078] It should be noted that the no-load speed formula of the motor 1000 is: n0=(Um / Ψf)*(60 / (2*π*p)), where Ψf=N*φ is the magnetic flux, i.e. n0=(Um / (N*φ))*(60 / (2*π*p)); the no-load torque formula of the motor 1000 is: Tem=1.5*p*Ψf*Im, i.e. Tem=1.5*p*N*φ*Im; where Um is the bus voltage; p is the number of pole pairs; N is the total number of conductors of the stator winding 120; φ is the air gap flux per pole; n0 is the load speed; Tem is the electromagnetic torque; and Im is the phase current. In order to make the motor 1000 meet the performance requirements of low-speed large torque and high-speed at the same time, the above three technical solutions are provided in combination with the above two formulas:

[0079] First, the total number of conductors N of the stator winding 120 is designed as a series of k coil discs 121 with intermediate taps (such as Figure 3 ), such as: N=N1+N2+…+Nk, when the motor 1000 requires different speeds and torques, the effective number of turns of the stator winding 120 can be adjusted by the tapping method, wherein when the motor 1000 needs to work at high speed or medium speed, the control module 200 is used to control the energization of the first part, so that N=N1 or N=N1+N2, the number of turns of the stator winding 120 is reduced, the magnetic flux linkage Ψf is reduced, and the speed of the motor 1000 is increased; when the motor 1000 needs low-speed large torque, the control module 200 is used to control the energization of the second part, so that N=N1+N2+…+Nk, the magnetic flux linkage Ψf is increased by increasing N, thereby increasing the torque of the motor 1000, and also reducing the no-load speed of the motor 1000.

[0080] Second: Each phase stator winding 120 is configured to include a third part and a fourth part. The third part includes a multi-turn coil disk 121 connected in parallel, and the fourth part is a single-turn coil disk 121. When the motor 1000 needs to obtain greater torque, the control module 200 controls the third part to be energized, so as to realize the parallel connection of the multi-turn coil disks 121 in the same phase, for example: Na1∥Na2∥Na3. The parallel connection of the multi-turn coil disks 121 can improve the overcurrent energy. When the motor 1000 needs to obtain high speed, the control module 200 controls the fourth part to be energized, thereby reducing the number of turns used in the stator winding 120, thereby reducing the magnetic flux and increasing the no-load speed of the motor 1000, so that the motor 1000 can effectively output high speed to ensure the performance of the motor 1000.

[0081] Third: Each phase stator winding 120 is configured to include a fifth section and a sixth section. The multi-turn coil discs 121 in the fifth section are connected in parallel, and the multi-turn coil discs 121 in the sixth section are connected in series. When the motor 1000 needs to obtain low speed and high torque, the control module 200 controls the sixth section to be energized, so as to realize the series connection of the multi-turn coil discs 121 of the same phase, for example: (Na1+Na2+Na3) / (Nb1+Nb2+Nb3) / (Nc1+Nc2+Nc3). This can increase the number of turns used in the stator winding 120, thereby improving the efficiency of the motor 1000. The flux linkage is reduced to 0, which increases the torque of motor 1000 and reduces the no-load speed. When motor 1000 needs to obtain a high speed, the control module 200 controls the fifth part to be energized, so as to connect the multi-turn coil disk 121 in parallel, for example: (Na1∥Na2) / (Nb1∥Nb2) / (Nc1∥Nc2); or to energize the single-turn coil disk 121, for example: Na1 / Nb1 / Nc1, thereby reducing the flux linkage and increasing the no-load speed of motor 1000, so that motor 1000 can effectively output a high speed to ensure the performance of motor 1000.

[0082] In summary, this application can achieve efficient operation in various speed ranges by adjusting the magnetic flux, thereby expanding the speed range of motor 1000 and improving the low-speed torque of motor 1000.

[0083] In some embodiments, such as Figure 1 and Figure 2 As shown, the lead-out terminals 128 of the multiphase stator winding 120 are located on the same radial side of the central axis of the stator core 110. This allows the lead-out terminals 128 of the multiphase stator winding 120 to be led out on the same side radially in the stator core 110, reducing the connection difficulty of the lead-out terminals 128 and simplifying the wiring of the stator assembly 100. This, to a certain extent, improves the manufacturing efficiency of the motor 1000 and helps to reduce the manufacturing cost of the motor 1000.

[0084] Of course, in some other embodiments, the outgoing ends 128 of the multiphase stator winding 120 can also be located on different sides of the radial direction of the central axis of the stator core 110, respectively.

[0085] In some embodiments, as shown in Figure 1 The motor 1000 also includes a rotor assembly 300 located inside the stator assembly 100. That is, the motor 1000 of the present application forms an internal rotor motor, which not only facilitates the layout, but also allows the motor 1000 to provide sufficient torque and power output while maintaining a small size. In addition, the internal rotor structure generally has fewer components, which helps to reduce the weight and complexity of the motor 1000, thereby reducing the cost and manufacturing difficulty of the motor 1000, so that the motor 1000 is compact in structure and facilitates the lightweight design of the motor 1000.

[0086] At the same time, by locating the rotor assembly 300 inside the stator assembly 100, heat can be more directly conducted to the housing of the motor 1000 and then dissipated through a cooling system (such as a fan or a heat sink), which helps to reduce heat accumulation during operation of the motor 1000 and improve the operating efficiency and life of the motor 1000.

[0087] Of course, in some other embodiments, the rotor assembly 300 can also be located outside the stator assembly 100, which is not specifically limited here.

[0088] In some embodiments, the rotor assembly 300 includes a rotor core 310 and permanent magnets, which cooperate with the stator winding 120 to form a magnetic coupling between the stator assembly 100 and the rotor assembly 300, thereby achieving the coupling of the stator assembly 100 and the rotor assembly 300. In this way, the stator assembly 100 and the rotor assembly 300 are connected by a magnetic field, so as to facilitate the reciprocating rotation of the rotor assembly 300 and reduce the difficulty of rotating the rotor assembly 300.

[0089] In a specific example, the stator winding 120 is supplied with three-phase alternating current to generate a rotating magnetic field, thereby driving the rotor assembly 300 to reciprocate.

[0090] In some embodiments, as shown in Figure 1 The motor 1000 also includes a first end cover 400 and a second end cover 500 connected to the axial ends of the housing of the stator assembly 100 to form the housing of the motor 1000.

[0091] The stirring device of the utility model embodiment is described below.

[0092] According to the stirring device of the utility model embodiment, the motor 1000 and the stirring part are included.

[0093] Wherein, the motor 1000 is the aforementioned motor 1000, and the specific structure of the motor 1000 is not described herein again. The stirring member is arranged on the motor shaft 320 of the motor 1000. In this way, the motor 1000 can be used to drive the stirring member to rotate, so as to process the food to be processed by the stirring member.

[0094] In some embodiments, the motor shaft 320 is fixedly connected with the rotor assembly 300, so as to drive the motor shaft 320 to rotate by the rotor assembly 300, reduce the rotation difficulty of the motor shaft 320, and then facilitate the rotation of the stirring member by the motor shaft 320, so as to ensure the working performance of the motor 1000.

[0095] In some embodiments, the stirring member is detachably connected with the motor shaft 320 of the motor 1000. While the stirring member is arranged on the motor shaft 320 of the motor 1000, the stirring member can also be removed, so as to facilitate the replacement of the stirring member and reduce the replacement difficulty of the stirring member.

[0096] From the above structure, it can be seen that the stirring device in the embodiment of the utility model can ensure the working performance of the stirring device by using the aforementioned motor 1000, and to a certain extent, avoid increasing the size of the stirring device and improve the user experience.

[0097] In some embodiments, the stirring device can be provided with multiple types of stirring members. When the motor 1000 outputs different rotation speeds, different types of stirring members can be replaced according to the working conditions of the stirring device, so as to ensure the working performance of the stirring member and the working performance of the stirring device, and improve the user experience.

[0098] Wherein, the stirring device mentioned herein can be a multifunctional food processor. The multifunctional food processor can not only stir food materials at high speed, but also cook or knead at low speed. When the stirring device uses the aforementioned motor 1000, it can ensure that the multifunctional food processor can output high-speed rotation force when stirring food materials at high speed, and the multifunctional food processor can also output low-speed torque when cooking at low speed. Therefore, the stirring device can output different rotation speeds, which not only enriches the functions of the stirring device, but also ensures the working performance of the stirring device, thereby improving the user experience.

[0099] In some embodiments, as Figure 1As shown, the motor 1000 further comprises support bearings 600, axial two ends of the motor shaft 320 are respectively towards the first end cover 400 and the second end cover 500 and are rotatably connected with the first end cover 400 and the second end cover 500 through the support bearings 600, so that the motor shaft 320 can be effectively rotated while being supported by the first end cover 400 and the second end cover 500, so as to ensure the working performance of the motor shaft 320 and facilitate the rotation of the stirring member driven by the motor shaft 320.

[0100] In the description of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0101] The motor 1000 and other configurations of the stirring device having the same according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail here.

[0102] In the description of the present application, the description of the terms "embodiment", "example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0103] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An electric machine characterized in that, Comprising: a stator assembly comprising a stator core and a multi-phase stator winding, the multi-phase stator winding being respectively arranged in the stator core, each phase of the stator winding comprising a multi-turn coil disc; a control module electrically connected with the multi-phase stator winding respectively to control the on-off state of each turn of the coil disc, the motor being configured to change the flux linkage of the motor by changing the number of turns used by the stator winding.

2. The electric machine of claim 1, wherein, Each phase of the stator winding comprises a first part and a second part, the first part comprising at least one turn of the coil disc, the second part comprising a plurality of turns of the coil disc, the plurality of turns of the coil disc being connected in series, the number of turns of the first part being less than the number of turns of the second part, the control module controlling the first part or the second part to be energized to change the flux linkage of the motor.

3. The electric machine of claim 2, wherein, The number of turns of the coil disc of each phase of the stator winding is k, 2≤k≤5.

4. The electric machine of claim 1, wherein, The plurality of turns of the coil disc of each phase of the stator winding are connected in parallel.

5. The electric machine of claim 4, wherein, Each phase of the stator winding comprises a third part and a fourth part, the third part comprising a plurality of turns of the coil disc, the fourth part comprising at least one turn of the coil disc, the number of turns of the fourth part being less than the number of turns of the third part, the control module controlling the third part or the fourth part to be energized to change the flux linkage of the motor.

6. The electric machine of claim 1, wherein, A part of the coil disc in each phase of the stator winding is connected in series and another part of the coil disc is connected in parallel.

7. The electric machine of claim 6, wherein, Each phase of the stator winding comprises a fifth part and a sixth part, the plurality of turns of the coil disc in the fifth part being connected in parallel, the plurality of turns of the coil disc in the sixth part being connected in series, the control module controlling the fifth part or the sixth part to be energized to change the flux linkage of the motor.

8. The electric machine of claim 1, wherein, The outgoing terminal of the multi-phase stator winding is located on the same side of the central axis of the stator core in the radial direction.

9. The electric machine of any of claims 1-8, wherein, Further comprising a rotor assembly, the rotor assembly being located on the inner side of the stator assembly.

10. A stirring apparatus, characterized by Comprising: a motor according to any one of claims 1-9; a stirring member arranged on the motor shaft of the motor.

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