High-end food processor and duplex-winding multi-phase motor thereof

Abstract

The utility model discloses a high-end food processor and a duplex winding multiphase motor thereof, the duplex winding multiphase motor comprises a stator module and a plurality of driving modules, the stator module comprises a plurality of winding modules, each winding module comprises a main winding and an auxiliary winding, each driving module comprises a first switch module, a second switch module, a third switch module, a fourth switch module, a fifth switch module, a first diode, a second diode, a third diode and a fourth diode; and the first switch module, the second switch module, the third switch module, the fourth switch module and the fifth switch module respectively execute switching actions according to the control signals, so that the main winding and the auxiliary winding are connected in series or in parallel. According to the technical scheme, extremely high flexibility is provided, the configuration of the winding and the current path can be adjusted according to different operation requirements, the performance of the motor can be optimized, and the motor is suitable for various food processing tasks.

Description

Technical Field

[0001] This application belongs to the technical field of food processors, and particularly relates to a high-end food processor and its dual-winding multi-phase motor. Background Art

[0002] A high-end food processor is a highly automated kitchen appliance that combines multiple kitchen utensils and intelligent recipe programs. It can not only complete food material processing such as juicing, kneading, grinding, and shaving ice, but also perform food cooking such as stir-frying, stewing, steaming, fermenting, and soup boiling.

[0003] The motor of a high-end food processor needs to operate in a wide speed range of 20 RPM to 15000 RPM. In the low-speed range around 20 RPM, the motor needs to generate a large torque to complete tasks such as kneading and grinding, that is, low-speed heavy load. At the same time, the motor needs to operate in the high-speed range of 10000 RPM to complete tasks such as juicing, that is, high-speed light load. This is the basic requirement of a food processor for the motor. Further, if a higher torque can be generated in the high-speed range and the motor can operate with higher efficiency under heavy load in the low-speed range, it is a higher requirement of current food processors for the drive motor. The motors of current high-end food processors all operate in a single-winding mode, and the winding parameters including the number of turns and wire diameter of the coil are fixed and immutable. While using a dual-winding or multi-winding method, the structure is relatively complex. The winding parameters designed for the motor need to consider the operation of the motor in different speed ranges at the same time. The higher the number of turns of the coil, the larger the torque that can be generated theoretically, but it is not conducive to high-speed operation. Therefore, the winding design compromises the requirements of high and low speeds and is not optimal for both high-speed and low-speed working conditions. By controlling the speed and power of the motor in a closed loop, a large back electromotive force is generated in the high-speed and ultra-high-speed operation ranges of the motor, and enough drive current cannot be provided to generate enough torque, so the motor can only operate with light load in the high-speed range; while in the low-speed range, heavy load will inevitably lead to excessive motor current, resulting in a decrease in efficiency.

[0004] Therefore, traditional high-end food processors cannot take into account the different advantages brought by different coils and different wire diameters at the same time, which restricts the food material processing ability. Summary of the Utility Model

[0005] Embodiments of the present utility model provide a high-end food processor and its dual-winding multi-phase motor to solve the above technical problems.

[0006] In the first aspect of the embodiment of the present utility model, a dual-winding multi-phase motor for a high-end food processor is provided, including: a stator module and a plurality of drive modules. The stator module includes a plurality of winding modules, and each winding module includes a main winding and an auxiliary winding. The main winding and the auxiliary winding are wound around the same stator salient pole. Each drive module includes a first switch module, a second switch module, a third switch module, a fourth switch module, a fifth switch module, a first diode, a second diode, a third diode, and a fourth diode. One end of the first switch module, one end of the third switch module, the cathode of the second diode, and the cathode of the fourth diode are commonly connected to one end of the power supply. The other end of the first switch module is respectively connected to one end of the main winding and the cathode of the first diode. The other end of the main winding is respectively connected to one end of the second switch module, one end of the fifth switch module, and the anode of the second diode. The other end of the third switch module is connected to one end of the auxiliary winding, the other end of the fifth switch module, and the cathode of the third diode. The other end of the auxiliary winding is connected to one end of the fourth switch module and the anode of the fourth diode. The other ends of the second switch module, the fourth switch module, the anode of the first diode, and the anode of the third diode are commonly connected to the other end of the power supply.

[0007] The first switch module, the second switch module, the third switch module, the fourth switch module, and the fifth switch module respectively perform switching actions according to control signals to connect the main winding and the auxiliary winding in series or in parallel.

[0008] Optionally, the stator module includes a stator core, and the stator core is provided with a plurality of stator salient poles. The winding wires of the main winding and the auxiliary winding of each winding module are evenly distributed on some of the stator salient poles.

[0009] Optionally, the stator module further includes a winding frame, and inlet channels and outlet channels are provided on both sides of each pole of the stator on the winding frame.

[0010] Optionally, the winding frame includes a front-end winding frame and a rear-end winding frame. Inlet channels and outlet channels are provided on both sides of one end of each pole of the stator on the front-end winding frame, and inlet channels and outlet channels are provided on both sides of the other end of each pole of the stator on the rear-end winding frame.

[0011] Optionally, the winding wires of the main winding and the auxiliary winding in each winding module respectively enter from the inlet channels at any one end and exit from the outlet channels at any one end.

[0012] Optionally, the winding wire of one of the main winding and the auxiliary winding in each winding module enters through the wire inlet channel of the front end winding rack and exits through the wire outlet channel of the front end winding rack, and the winding wire of the other enters through the wire inlet channel of the rear end winding rack and exits through the wire outlet channel of the rear end winding rack.

[0013] Optionally, when the first switch module, the second switch module, the third switch module, and the fourth switch module are all turned on and the fifth switch module is turned off, the main winding and the auxiliary winding are connected in parallel.

[0014] Optionally, when the first switch module, the fourth switch module, and the fifth switch module are turned on and the second switch module and the third switch module are turned off, the main winding and the auxiliary winding are connected in series.

[0015] In a second aspect of the embodiments of the present invention, a high-end food processor is provided, including the dual-winding multi-phase motor described in the first aspect.

[0016] Optionally, the high-end food processor further includes a control module, and the control module is respectively connected to the control ends of the first switch module, the second switch module, the third switch module, the fourth switch module, and the fifth switch module.

[0017] The technical effects of the embodiments of the present invention are as follows: This technical solution provides extremely high flexibility, can adjust the winding configuration and current path according to different operation requirements, helps to optimize the performance of the motor, and adapts to various food processing tasks; through series and parallel configurations, the working state of the motor can be optimized under different speed and load conditions. At low-speed working conditions, higher efficiency can be provided; at high-speed working conditions, greater torque can be provided. By providing highly controllable and adjustable motor performance, it can adapt to diverse food processing requirements. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 is a schematic structural diagram of a dual-winding multi-phase motor of a high-end food processor provided in Embodiment 1 of the present invention;

[0020] Figure 2 is a circuit diagram of a dual-winding multi-phase motor of a high-end food processor provided in Embodiment 1 of the present invention;

[0021] Figure 3 This is another circuit diagram of a dual-winding multi-phase motor for a high-end food processor provided in the first embodiment of the present invention;

[0022] Figure 4 This is a current flow diagram when MOS transistors Q1, Q2, Q3, and Q4 are all turned on and MOS transistor Q5 is turned off in a dual-winding multi-phase motor of a high-end food processor provided by the first embodiment of the present invention;

[0023] Figure 5 This is a current flow diagram when MOS transistors Q1, Q3, and Q5 are disconnected and MOS transistors Q2 and Q4 are turned on in a dual-winding multi-phase motor of a high-end food processor provided by the first embodiment of the present invention;

[0024] Figure 6 This is a current flow diagram when MOS transistors Q1, Q2, Q3, Q4, and Q5 in a dual-winding multi-phase motor of a high-end food processor provided by the first embodiment of the present invention are all disconnected;

[0025] Figure 7 This is a current flow diagram when MOS transistors Q2 and Q3 are disconnected and MOS transistors Q1, Q4, and Q5 are turned on in a dual-winding multi-phase motor of a high-end food processor provided by the first embodiment of the present invention;

[0026] Figure 8 This is a current flow diagram when MOS transistors Q1, Q2, and Q3 are disconnected and MOS transistors Q4 and Q5 are connected in a dual-winding multi-phase motor of a high-end food processor provided by the first embodiment of the present invention;

[0027] Figure 9 This is a current flow diagram when MOS transistors Q1, Q2, Q3, and Q4 are all disconnected and MOS transistor Q5 is turned on in a dual-winding multi-phase motor of a high-end food processor provided by the first embodiment of the present invention;

[0028] Figure 10 This is a diagram showing the internal structure of a stator module of a dual-winding multi-phase motor for a high-end food processor provided in the first embodiment of the present invention;

[0029] Figure 11 This is a winding diagram of the main winding of the first winding module of a dual-winding multi-phase motor of a high-end food processor provided in the first embodiment of the present invention on the stator;

[0030] Figure 12It is the winding diagram of the main winding of the second winding module of a dual-winding multi-phase motor of a high-end food processor provided in the first embodiment of the present utility model on the stator;

[0031] Figure 13 It is the winding diagram of the main winding of the third winding module of a dual-winding multi-phase motor of a high-end food processor provided in the first embodiment of the present utility model on the stator;

[0032] Figure 14 It is the external view of the stator module of a dual-winding multi-phase motor of a high-end food processor provided in the first embodiment of the present utility model;

[0033] Figure 15 It is a wiring diagram of the main winding and the auxiliary winding of a dual-winding multi-phase motor of a high-end food processor provided in the first embodiment of the present utility model for incoming and outgoing wires on the stator;

[0034] Figure 16 It is another wiring diagram of the main winding and the auxiliary winding of a dual-winding multi-phase motor of a high-end food processor provided in the first embodiment of the present utility model for incoming and outgoing wires on the stator;

[0035] In the figure: 101, main winding; 102, auxiliary winding; 103, first switch module; 104, second switch module; 105, third switch module; 106, fourth switch module; 107, fifth switch module; 201, stator module; 202, stator salient pole; 203, winding; 204, winding frame; 205, incoming wire channel; 206, outgoing wire channel; 207, stator core; 211, front winding frame; 212, rear winding frame; 301, first diode; 302, second diode; 303, third diode; 304, fourth diode. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0037] It should be understood that the present utility model can be implemented in different forms and should not be construed as limited to the embodiments presented herein. On the contrary, providing these embodiments will make the present utility model thorough and complete, and will fully convey the scope of the present utility model to those skilled in the art. In the drawings, for clarity, the dimensions and relative dimensions of layers and regions may be exaggerated, and the same reference numerals denote the same elements throughout.

[0038] It should be understood that when an element or layer is referred to as being "on", "adjacent to", "connected to", or "coupled to" another element or layer, it can be directly on, adjacent to, connected or coupled to the other element or layer, or there may be intervening elements or layers. In contrast, when an element is referred to as being "directly on", "directly adjacent to", "directly connected to", or "directly coupled to" another element or layer, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers, and / or portions, these elements, components, regions, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer, or portion from another element, component, region, layer, or portion. Thus, without departing from the teachings of the present utility model, the first element, component, region, layer, or portion discussed below may be denoted as the second element, component, region, layer, or portion.

[0039] Spatial relationship terms such as "under", "below", "lower", "beneath", "above", "upper", etc. are used herein for convenience in describing the relationship of one element or feature shown in the figures to other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relationship terms are intended to include different orientations of the device in use and operation. For example, if the device in the figures is flipped, then an element or feature described as "under" or "beneath" or "below" other elements or features will be oriented "above" the other elements or features. Thus, the exemplary terms "under" and "beneath" can include both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatial descriptors used herein are to be interpreted accordingly.

[0040] The purpose of the terms used herein is only to describe specific embodiments and is not a limitation of the present utility model. As used herein, the singular forms "a", "an", and "the" are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising" and / or "including", when used in this specification, specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups. As used herein, the term "and / or" includes any and all combinations of the associated listed items.

[0041] To fully understand the present utility model, detailed structures and steps will be presented in the following description to illustrate the technical solutions proposed by the present utility model. The preferred embodiments of the present utility model are described in detail below. However, in addition to these detailed descriptions, the present utility model may have other embodiments.

[0042] Embodiment 1

[0043] Embodiment 1 of the present utility model provides a dual-winding multi-phase motor for a high-end food processor. As Figure 1 shown, it includes a stator module and multiple drive modules. The stator module includes multiple winding modules. Each winding module includes a main winding 101 and an auxiliary winding 102. The main winding 101 and the auxiliary winding 102 are wound around the same stator salient pole. Each drive module includes a first switch module 103, a second switch module 104, a third switch module 105, a fourth switch module 106, a fifth switch module 107, a first diode 301, a second diode 302, a third diode 303, and a fourth diode 304. One end of the first switch module 103, one end of the third switch module 105, the cathode of the second diode 302, and the cathode of the fourth diode 304 are commonly connected to one end of the power supply. The other end of the first switch module 103 is respectively connected to one end of the main winding 101 and the cathode of the first diode 301. The other end of the main winding 101 is respectively connected to one end of the second switch module 104, one end of the fifth switch module 107, and the anode of the second diode 302. The other end of the third switch module 105 is connected to one end of the auxiliary winding 102, the other end of the fifth switch module 107, and the cathode of the third diode 303. The other end of the auxiliary winding 102 is connected to one end of the fourth switch module 106 and the anode of the fourth diode 304. The other ends of the second switch module 104, the fourth switch module 106, the anode of the first diode 301, and the anode of the third diode 303 are commonly connected to the other end of the power supply. The first switch module 103, the second switch module 104, the third switch module 105, the fourth switch module 106, and the fifth switch module 107 respectively perform switching actions according to control signals to connect the main winding 101 and the auxiliary winding 102 in series or in parallel.

[0044] Among them, the multiple drive modules correspond to a multi-phase motor, and this technical solution can be used in motors with at least two phases. In the design of the dual-winding multi-phase motor of the high-end food processor, each winding module includes a main winding 101 and an auxiliary winding 102, and each drive module includes four diodes and five switch modules. The combination of these modules can achieve flexible control of the winding configuration and optimize the motor performance. The following are the functions of each module:

[0045] The main winding 101 is used to provide the basic driving function of the motor, providing the necessary magnetic field to drive the motor rotor. The auxiliary winding 102 assists the main winding 101 in working and can be connected in series or parallel with the main winding 101 when needed to adjust the characteristics of the motor. The main winding 101 and the auxiliary winding 102 can have the same parameters or different parameters. For example, when having the same parameters, the number of winding coils used is the same, and the winding wires with the same wire diameter have the same resistance and inductance characteristics, which can ensure uniform current distribution between the windings. The winding directions of the main winding 101 and the auxiliary winding 102 can be the same or different. The main winding 101 and the auxiliary winding 102 are wound on the same stator pole. This arrangement can save space and simplify the mechanical design of the stator. Here, the number of phases of the motor is not limited and can be a multi-phase motor, such as a three-phase motor.

[0046] Among them, the first switch module 103 is connected between one end of the power supply and the main winding 101 to control the energization state of the main winding 101 and can turn on or off the current flowing through the main winding 101. The second switch module 104 is connected between the main winding 101 and the other end of the power supply, and the fifth switch module 107 is connected between the main winding 101 and the auxiliary winding 102. The second switch module 104, the fifth switch module 107 and the first switch module 103 jointly control the current path of the main winding 101. The third switch module 105 is connected between one end of the power supply and the auxiliary winding 102 to control the energization state of the auxiliary winding 102 and is independently controlled from the main winding 101. The fourth switch module 106 is connected between the auxiliary winding 102 and the other end of the power supply. The fourth switch module 106, the fifth switch module 107 and the third switch module 105 jointly control the current path of the auxiliary winding 102.

[0047] Among them, the first switch module 103, the second switch module 104, the third switch module 105, the fourth switch module 106, and the fifth switch module 107 can be triodes, MOS transistors or IGBT modules. As an example, as Figure 2 shown, the first switch module 103 is the triode S1, the second switch module 104 is the triode S2, the third switch module 105 is the triode S3, the fourth switch module 106 is the triode S4, the fifth switch module 107 is the triode S5, the first diode 301 is the diode D1, the second diode 302 is the diode D2, the third diode 303 is the diode D3, the fourth diode 304 is the diode D4, the main winding 101 is the main winding L1, and the auxiliary winding 102 is the auxiliary winding L2. As another example, as Figure 3As shown, the first switching module 103 is the MOS transistor Q1, the second switching module 104 is the MOS transistor Q2, the third switching module 105 is the MOS transistor Q3, the fourth switching module 106 is the MOS transistor Q4, the fifth switching module 107 is the MOS transistor Q5, the first diode 301 is the diode D1, the second diode 302 is the diode D2, the third diode 303 is the diode D3, the fourth diode 304 is the diode D4, the main winding 101 is the main winding L1, and the auxiliary winding 102 is the auxiliary winding L2.

[0048] As Figure 4 shown, when the MOS transistors Q1, Q2, Q3, and Q4 are all turned on and the MOS transistor Q5 is turned off, the MOS transistor Q1, the main winding L1, and the MOS transistor Q2 form a first loop. At the same time, the MOS transistor Q3, the auxiliary winding L2, and the MOS transistor Q4 form a second loop.

[0049] As Figure 5 shown, when the MOS transistors Q1, Q3, and Q5 are turned off and the MOS transistors Q2 and Q4 are turned on, the main winding L1, the MOS transistor Q2, and the diode D1 form a third loop. At the same time, the auxiliary winding L2, the MOS transistor Q4, and the diode D3 form a fourth loop.

[0050] As Figure 6 shown, when the MOS transistors Q1, Q2, Q3, Q4, and Q5 are all turned off, the diode D1, the main winding L1, and the diode D2 form a fifth loop. At the same time, the diode D3, the auxiliary winding L2, and the diode D4 form a sixth loop.

[0051] As Figure 7 shown, when the MOS transistors Q2 and Q3 are turned off and the MOS transistors Q1, Q4, and Q5 are turned on, the MOS transistor Q1, the main winding L1, the MOS transistor Q5, the auxiliary winding L2, and the MOS transistor Q4 form a seventh loop.

[0052] As Figure 8 shown, when the MOS transistors Q1, Q2, and Q3 are turned off and the MOS transistors Q4 and Q5 are turned on, the main winding L1, the MOS transistor Q5, the auxiliary winding L2, the MOS transistor Q4, and the diode D1 form an eighth loop.

[0053] As Figure 9 shown, when the MOS transistors Q1, Q2, Q3, and Q4 are all turned off and the MOS transistor Q5 is turned on, the diode D1, the main winding L1, the MOS transistor Q5, the auxiliary winding L2, and the diode D4 form a ninth loop.

[0054] When low speed and high efficiency are required, the main winding 101 and the auxiliary winding 102 can be connected in series. At this time, the first switch module 103, the fourth switch module 106 and the fifth switch module 107 are turned on, and the second switch module 104 and the third switch module 105 are turned off. The current flows from one end of the power supply through the first switch module 103, through the main winding 101, through the fifth switch module 107, then enters the auxiliary winding 102, and finally flows to the other end of the power supply through the fourth switch module 106. This configuration is suitable for occasions where the motor operates continuously under low-speed conditions, which is beneficial to reducing the temperature rise of the motor and requires the motor to have the ability to work continuously for a longer time. When high speed and large torque are required, the main winding 101 and the auxiliary winding 102 can be connected in parallel. At this time, the first switch module 103 and the second switch module 104 are turned on, the third switch module 105 and the fourth switch module 106 are turned on, and the fifth switch module 107 is turned off. The current flows from one end of the power supply through the first switch module 103 and the third switch module 105, flows through the main winding 101 and the auxiliary winding 102 respectively, and then flows to the other end of the power supply through the second switch module 104 and the fourth switch module 106 respectively. This configuration is suitable for occasions where the motor operates briefly under high-speed conditions and requires the motor to be able to process more food at one time.

[0055] In this embodiment, when the constant speed control is adopted without changing the external shape structure of the motor, the maximum holding torque at high speed (15000 - 2700 RPM) can be increased by 100 - 340%, and the maximum efficiency at low speed (1000 - 20 RPM) can be increased by 4 - 7%. See Table 1 below:

[0056]

[0057] This technical solution expands the wire diameter selection range for high-speed applications of the motor and can further improve the slot fill factor. When using the same production equipment, the wire diameter can be increased by 41% and the slot fill factor can be increased by 10%. (1) Assuming that the maximum wire diameter that the winding machine can wind is Φ0.90, in the double-winding mode, 2×Φ0.90 (equivalent wire diameter is Φ1.27) can be used, that is, the wire diameter is increased by 41%; (2) Assuming that the winding machine uses the maximum wire diameter Φ0.90 and can wind up to 70 turns at most, in the double-winding mode, 2×Φ0.64 (equivalent wire diameter is Φ0.90) can be used. Due to the significant reduction in wire diameter, the winding wires can be distributed and arranged more evenly and tightly during winding, and up to 77 turns can be wound, that is, the slot fill factor is increased by 10%.

[0058] The technical effects of the dual-winding multi-phase motor provided by the first embodiment are as follows: This technical solution provides extremely high flexibility, can adjust the winding configuration and current path according to different operation requirements, helps to optimize the performance of the motor, and adapts to various food processing tasks; through series and parallel configurations, the operating state of the motor can be optimized under different speed and load conditions. At low speeds, higher efficiency can be provided; at high speeds, greater torque can be provided. By providing highly controllable and adjustable motor performance, it can adapt to diverse food processing requirements.

[0059] Regarding the winding method of the main winding 101 and the auxiliary winding 102, as Figure 10 shown, the dual-winding multi-phase motor further includes a stator module 201. The stator module 201 includes a stator core 207. The stator core 207 is provided with a plurality of stator poles 202. The winding wires of the main winding 101 and the auxiliary winding 102 of each winding module are evenly distributed on some of the stator poles 202.

[0060] Among them, for the number of poles of the dual-winding multi-phase motor, different numbers of poles can be set to realize the arrangement of the main winding 101 and the auxiliary winding 102. The cooperation of the stator and rotor with different numbers of poles can provide different electromagnetic characteristics and operating performances. The stator module includes, but is not limited to, the following pole number configurations:

[0061] 1. 8-pole stator and 6-pole rotor: The main windings 101 and the auxiliary windings 102 of 4 phases are respectively arranged on 2 poles, and a total of 8 poles are used.

[0062] 2. 10-pole stator and 12-pole rotor: The main windings 101 and the auxiliary windings 102 of 5 phases are respectively arranged on 2 poles, and a total of 10 poles are used.

[0063] 3. 12-pole stator and 8-pole rotor: The main windings 101 and the auxiliary windings 102 of 3 phases are respectively arranged on 4 poles, and a total of 12 poles are used.

[0064] 4. 14-pole stator and 10-pole rotor: The main windings 101 and the auxiliary windings 102 of 7 phases are respectively arranged on 2 poles, and a total of 12 poles are used.

[0065] 5. 16-pole stator and 10-pole rotor: The main windings 101 and the auxiliary windings 102 of 8 phases are respectively arranged on 2 poles, and a total of 16 poles are used.

[0066] As an implementation manner of the structure of the dual-winding multi-phase motor, this implementation manner is only an example and does not limit the structure of the dual-winding multi-phase motor. As Figures 11 to 13 shown, the dual-winding multi-phase motor further includes a stator module 201. The stator module 201 includes a 12-pole stator core. The winding wires of the main winding 101 and the auxiliary winding 102 of each winding module are wound on 4 stator poles in the 12-pole stator core at the same interval.

[0067] Among them, the stator module 201 includes a 12-pole stator core. Each winding module includes a main winding 101 and an auxiliary winding 102, which are respectively wound around 4 stator poles. For example, for three winding modules (A, B, C), the A-phase winding uses stator poles 1, 4, 7, 10, the B-phase winding uses stator poles 2, 5, 8, 11, and the C-phase winding uses stator poles 3, 6, 9, 12. On each specified 4 stator poles, the main winding 101 and the auxiliary winding 102 are wound according to the same winding direction and wire diameter. Specifically, there are two sets of windings on each pole, one set of main winding 101 and one set of auxiliary winding 102. The winding wires of the main winding 101 and the auxiliary winding 102 are wound around the stator poles according to the design requirements, with the same number of turns and wire diameter. The main winding 101 and the auxiliary winding 102 can adopt the same winding direction or different winding directions. A uniform interval is maintained between the 12 poles to ensure a uniform distribution of the electromagnetic field of the motor, which helps to balance the operation of the motor and reduce vibration and noise.

[0068] As an implementation manner, as Figure 11 shown, the winding module includes a first winding module. The first winding module includes a first main winding and a first auxiliary winding. The winding wires of the first main winding and the first auxiliary winding are respectively wound around the 1st pole, the 4th pole, the 7th pole, and the 10th pole of the 12-pole stator core in sequence. As Figure 12 shown, the winding module includes a second winding module. The second winding module includes a second main winding and a second auxiliary winding. The second main winding and the second auxiliary winding are respectively wound around the 2nd pole, the 5th pole, the 8th pole, and the 11th pole of the 12-pole stator core in sequence. As Figure 13 shown, the winding module includes a third winding module. The third winding module includes a third main winding and a third auxiliary winding. The third main winding and the third auxiliary winding are respectively wound around the 3rd pole, the 6th pole, the 9th pole, and the 12th pole of the 12-pole stator core in sequence.

[0069] The technical effect of this implementation manner is that by distributing the main winding and the auxiliary winding on different stator poles respectively, and the windings in each winding module are evenly distributed on the 12 stator poles, a uniform magnetic field distribution is achieved, reducing magnetic field fluctuations, thereby improving the smoothness of the motor operation; the main winding and the auxiliary winding in each winding module can be independently controlled, and by adjusting the on-off states of these windings, different operation modes can be achieved. For example, the main winding and the auxiliary winding can be activated simultaneously in the low-speed high-torque mode, or some windings can be selectively activated in the high-speed light-load mode.

[0070] As an implementation manner of the winding frame structure, as Figure 11 shown, the stator module 201 provided in this embodiment further includes a winding frame 204. AsFigure 14 As shown, the winding bobbin 204 includes a front-end winding bobbin 211 and a rear-end winding bobbin 212. In the initial design, there was only one channel for the incoming and outgoing wires in the winding bobbin, resulting in interference between the winding wires during winding, which easily damaged the winding wires and even produced defective products with broken wires.

[0071] As an implementation of the winding bobbin structure, the winding bobbin 204 is provided with an incoming wire channel 205 and an outgoing wire channel 206 on both sides of each stator pole for the incoming and outgoing of the winding wires during the winding process. The front-end winding bobbin 211 is provided with an incoming wire channel and an outgoing wire channel on both sides of one end of each stator pole, and the rear winding bobbin 212 is provided with an incoming wire channel and an outgoing wire channel on both sides of the other end of each stator pole. This implementation provides independent incoming and outgoing channels for the winding wires to enter and exit the winding bobbin, which can effectively reduce the interference between the winding wires when entering and exiting the winding bobbin.

[0072] As an implementation of winding, the winding wires of the main winding and the auxiliary winding in each winding module can enter from the incoming wire channel at any end and exit from the outgoing wire channel at any end. For example, as Figure 15 shown, the winding wires in the main winding and the auxiliary winding in each winding module enter from the incoming wire channel of the front-end winding bobbin 211 and exit from the outgoing wire channel of the front-end winding bobbin 211. The winding bobbin is provided with independent double channels at the front and rear ends of the stator module. The winding wires of one of the main winding and the auxiliary winding in each winding module enter from the incoming wire channel of the front-end winding bobbin and exit from the outgoing wire channel of the front-end winding bobbin, and the winding wires of the other enter from the incoming wire channel of the rear-end winding bobbin and exit from the outgoing wire channel of the rear-end winding bobbin, ensuring that there is only one incoming or outgoing wire in each incoming and outgoing wire channel. Through the double-channel design at the front and rear ends, the transition wires of the main winding and the auxiliary winding are completely independent when entering and leaving the winding slot, thus eliminating the cross-interference between the wires. For example, as Figure 16 shown, the winding wires of one of the main winding and the auxiliary winding in each winding module enter from the incoming wire channel of the front-end winding bobbin 211 and exit from the outgoing wire channel of the front-end winding bobbin 211, and the winding wires of the other enter from the incoming wire channel of the rear-end winding bobbin 212 and exit from the outgoing wire channel of the rear-end winding bobbin 212.

[0073] The technical effect of this implementation is that by designing independent incoming and outgoing channels for the main winding and the auxiliary winding, the winding wires do not interfere with each other during the winding process, effectively reducing various defective product problems caused by wire crossing, improving the quality and reliability of winding. The design of independent channels makes the winding process smoother, reduces the adjustment time, can improve production efficiency, and at the same time ensures the consistency of each winding, thereby improving the overall performance of the product.

[0074] Embodiment 2

[0075] Embodiment 2 provides a high-end food processor, including the dual-winding multiphase motor provided in Embodiment 1.

[0076] Furthermore, the high-end food processor further includes a control module, which is respectively connected to the control ends of the first switch module, the second switch module, the third switch module, the fourth switch module, and the fifth switch module.

[0077] By controlling the on / off states of each switch module, the control module can selectively excite the main winding and the auxiliary winding. According to the requirements of the processing task, the control module can switch the winding between series or parallel configurations, thereby adjusting the current and voltage characteristics of the motor to adapt to different operating modes. The control module may include sensor inputs, such as current, voltage, temperature, etc., to monitor the motor state in real time and adjust the control strategy as needed.

[0078] Through the precise control of the control module, the food processor can perform various operations, such as kneading, grinding, juicing, etc. These operations require different speed and torque characteristics, and the control module can dynamically adjust the winding configuration to meet these needs of the user.

[0079] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A dual-winding polyphase motor for a high-end food processor, characterized in that, Comprising: A stator module and a plurality of drive modules, the stator module comprising a plurality of winding modules, each winding module comprising a main winding and an auxiliary winding, the main winding and the auxiliary winding being wound around the same stator pole. Each drive module comprises a first switch module, a second switch module, a third switch module, a fourth switch module, a fifth switch module, a first diode, a second diode, a third diode and a fourth diode. One end of the first switch module, one end of the third switch module, the cathode of the second diode and the cathode of the fourth diode are commonly connected to one end of a power supply. The other end of the first switch module is respectively connected to one end of the main winding and the cathode of the first diode. The other end of the main winding is respectively connected to one end of the second switch module, one end of the fifth switch module and the anode of the second diode. The other end of the third switch module is connected to one end of the auxiliary winding, the other end of the fifth switch module and the cathode of the third diode. The other end of the auxiliary winding is connected to one end of the fourth switch module and the anode of the fourth diode. The other ends of the second switch module, the fourth switch module, the anode of the first diode and the anode of the third diode are commonly connected to the other end of the power supply; The first switch module, the second switch module, the third switch module, the fourth switch module and the fifth switch module respectively perform switching actions according to control signals to connect the main winding and the auxiliary winding in series or in parallel.

2. The dual-winding multiphase motor according to claim 1, wherein The stator module comprises a stator core, the stator core being provided with a plurality of stator poles, and the winding wires of the main winding and the auxiliary winding of each winding module being evenly distributed on some of the stator poles.

3. The dual-winding multiphase motor according to claim 2, wherein The stator module further comprises a winding frame, and inlet channels and outlet channels are provided on both sides of each pole of the stator on the winding frame.

4. The dual-winding multiphase motor according to claim 3, wherein The winding frame comprises a front-end winding frame and a rear-end winding frame. Inlet channels and outlet channels are provided on both sides of one end of each pole of the stator on the front-end winding frame, and inlet channels and outlet channels are provided on both sides of the other end of each pole of the stator on the rear-end winding frame.

5. The dual-winding multiphase motor according to claim 4, characterized in that, The winding wires of the main winding and the auxiliary winding in each winding module respectively enter from the inlet channels at any one end and exit from the outlet channels at any one end.

6. The dual-winding multiphase motor according to claim 5, characterized in that, The winding wire of one of the main winding and the auxiliary winding in each winding module enters from the inlet channel of the front-end winding frame and exits from the outlet channel of the front-end winding frame, and the winding wire of the other enters from the inlet channel of the rear-end winding frame and exits from the outlet channel of the rear-end winding frame.

7. The dual-winding multi-phase motor according to claim 1, characterized in that, When the first switch module, the second switch module, the third switch module and the fourth switch module are all turned on and the fifth switch module is turned off, the main winding and the auxiliary winding are connected in parallel.

8. The dual-winding multi-phase motor according to claim 1, characterized in that, When the first switch module, the fourth switch module and the fifth switch module are turned on and the second switch module and the third switch module are turned off, the main winding and the auxiliary winding are connected in series.

9. A high-end food processor, characterized in that, Comprising the dual-winding multi-phase motor according to any one of claims 1 to 8.

10. The high-end food processor according to claim 9, characterized in that, The high-end food processor further includes a control module, and the control module is respectively connected to the control ends of the first switch module, the second switch module, the third switch module, the fourth switch module, and the fifth switch module.

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