A food processor with stable operation

Abstract

This utility model discloses a stable food processing machine, including a cup assembly. The cup assembly includes a grinding cup with a built-in grinding device, a heating plate located below the grinding cup, a cup base surrounding the bottom of the grinding cup, and a motor fixed in the cup base and driving the grinding device to rotate. The motor includes a rotor assembly and a stator assembly located on the outer periphery of the rotor assembly. The rotor assembly includes a rotating shaft and a magnet fixed to the rotating shaft. The magnet includes an inner magnet fixed to the rotating shaft and an outer magnet covering the outer periphery of the inner magnet. A heat insulation structure is provided between the inner magnet, the outer magnet, and the heating plate, effectively isolating the inner magnet from the outer magnet and the heating plate. This prevents heat from the heating plate from being directly conducted to the magnet, thus avoiding significant temperature rise in the magnet, which would cause its magnetism to decay due to high temperature, resulting in a significant reduction in the magnet's output torque. This would prevent the grinding device from being unable to meet the processing requirements of ingredients with high torque, thus ensuring the working performance of the motor.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a food processing machine that operates stably. Background Technology

[0002] Existing food processors typically consist of a cup with a built-in crushing device and a motor located below the cup that drives the crushing device. When using the food processor, the user places the food into the cup, and the motor rotates at high speed, driving the crushing device to process the food. Currently, most food processors on the market use brushed motors, which are noisy and bulky. To reduce noise and achieve miniaturization, some manufacturers are using brushless motors in food processors. This effectively reduces noise and occupies less space, meeting the requirement for overall miniaturization. Existing brushless motors in food processors typically consist of a shaft, a balance weight, an iron core, and a permanent magnet. The ratio of the rotor's axial thickness H to its radial outer diameter R is often around 1, not within 0.5, resulting in a relatively high rotor axial height. This makes it impossible to achieve an extremely flat design for the motor and the entire machine. Furthermore, the permanent magnet is made of neodymium iron boron, and the price of the rare earth element neodymium continues to rise, increasing the motor's cost. To achieve a flattened design and reduce the cost of brushless motors, the applicant's earlier patent application CN202223180384.9 discloses a motor and a cleaning robot. This patent uses a novel brushless motor in the cleaning robot, comprising a stator assembly and a rotor assembly. The stator assembly is located within a housing and on the outer periphery of the rotor assembly. The rotor assembly includes a shaft and magnets fixed to the outside of the shaft. The magnets include an inner magnet and an outer magnet, with the outer magnet covering the outer periphery of the inner magnet. This type of brushless motor effectively reduces the overall axial height and has lower production costs. Those skilled in the art would readily conceive of applying this type of brushless motor in food processing machines to achieve an extremely flattened design for both the motor and the entire machine. However, some models have a heating plate at the bottom of the cup to heat the food inside. The heat from the heating plate is also conducted downwards to the motor. Since the plastic magnetic rotor itself contains plastic material, its heat resistance is easily affected by the heat source. The magnetic strength of the inner and outer magnets will be significantly reduced after being exposed to high temperatures, resulting in a significant reduction in the output torque of the motor. When the crushing device is processing ingredients that require high torque, such as kneading dough, the motor is prone to stalling and cannot process the ingredients, which seriously affects the user experience. Utility Model Content

[0003] The purpose of this utility model is to provide a food processing machine with good heat dissipation, in order to solve the problem of how to avoid the inner and outer magnets from being affected by the high temperature of the heating element of the food processing machine, which would reduce the magnetism and thus reduce the torque output, under the premise that the magnets of the motor are set as inner magnets and outer magnets covering the inner magnets.

[0004] To achieve the above objectives, this utility model provides a stable food processing machine, including a cup assembly. The cup assembly includes a grinding cup with a built-in grinding device, a heating plate located below the grinding cup, a cup base surrounding the bottom of the grinding cup, and a motor fixed in the cup base and driving the grinding device to rotate. The motor includes a rotor assembly and a stator assembly located on the outer periphery of the rotor assembly. The rotor assembly includes a rotating shaft and a magnet fixedly connected to the rotating shaft. The magnet includes an inner magnet fixedly connected to the rotating shaft and an outer magnet covering the outer periphery of the inner magnet. A heat insulation structure is provided between the inner magnet, the outer magnet, and the heating plate.

[0005] This application, by configuring the magnets of the motor rotor assembly to include an inner magnet fixed to the shaft and an outer magnet covering the outer periphery of the inner magnet, significantly increases the magnetic strength of the magnets within a given motor size. This allows the motor to generate greater torque to drive the crushing device, improving the performance of the food processor and meeting user needs. Furthermore, by adjusting the material, grade, and thickness of the two magnet layers, the air gap magnetic field strength requirements of different motors can be met, ensuring the stability of the food processor. Simultaneously, under the same radial dimensions and magnetic field strength, the inner and outer magnets can be made flatter, effectively reducing the axial dimension of the motor, meeting the flattening requirements of existing models, and improving the overall compactness of the machine structure. Meanwhile, when the motor is placed in the cup holder, the inner and outer magnets are very close to the heating plate. By setting a heat insulation structure between the inner and outer magnets and the heating plate, the inner and outer magnets are effectively isolated from the heating plate. This avoids the situation where the heat from the heating plate is directly conducted to the inner and outer magnets, causing a significant temperature rise in the magnets. This effectively prevents the magnets from weakening due to high temperature during operation, which would greatly reduce the output torque of the magnets and prevent the crushing device from meeting the processing requirements of ingredients with high torque requirements. This ensures the working performance of the motor.

[0006] In a preferred embodiment of a stable food processing machine, the motor further includes an upper cover, the stator assembly is fixed on the upper cover, and the upper cover is isolated between the inner magnet and the outer magnet and the heating plate, with the upper cover serving as the heat insulation structure.

[0007] By setting the heat insulation structure as the upper cover, and isolating the inner magnet from the outer magnet and the heating plate, the upper cover can not only fix the stator assembly, but also effectively insulate the inner magnet from the outer magnet and the heating plate. This dual-purpose design eliminates the need for a separate heat insulation structure to isolate the heating plate, simplifies the motor structure, reduces manufacturing costs, and reduces the axial height of the heating plate and motor, thereby further reducing the overall axial height of the machine. This helps to improve the overall compactness of the food processing machine, optimize space utilization, and meet the miniaturization needs of modern kitchens.

[0008] In a preferred embodiment of a stable food processing machine, the upper cover is fixed to the bottom of the heating plate, and a heat insulation gap is provided between the upper cover and the heating plate.

[0009] By providing a heat insulation gap between the upper cover and the heating plate, the two systems can be isolated from each other. This prevents heat from the heating plate from being directly conducted to the upper cover and then further conducted downwards to the stator assembly and magnets, thus reducing the overall temperature rise of the motor. On the other hand, the heat insulation gap allows air to convect through the gap as the motor rotates, carrying away some of the heat from below the heating plate and the upper cover. This effectively dissipates heat from the upper cover and the entire motor, further reducing the motor's temperature rise and ensuring its operational stability.

[0010] In a preferred embodiment of a stable food processing machine, the motor further includes a lower end cover, the stator assembly is fixed to the lower end cover, the lower end cover is suspended and fixed to the heating plate, and the inner magnet and the outer magnet and the heating plate are fitted with a gap to form a heat insulation space, and the heat insulation structure is a heat insulation space.

[0011] By including a lower end cover in the motor, fixing the stator assembly to the lower end cover, and suspending the lower end cover to the heating plate, the stator assembly can be installed and fixed through the lower end cover, eliminating the need for an upper end cover. This further simplifies the overall motor structure, reduces the number of parts, and further reduces the axial dimension of the motor, contributing to a more streamlined design. Furthermore, the gap between the inner and outer magnets and the heating plate forms a heat insulation space. This heat insulation structure isolates the inner and outer magnets from the heating plate, effectively blocking heat conduction. Simultaneously, the motor's rotation drives airflow within the heat insulation space, creating convection cooling for the motor and heating plate, ensuring long-term stable operation, extending service life, and improving equipment reliability.

[0012] In a preferred embodiment of a stable food processing machine, the heating plate is provided with a mounting post that extends downward and is fixedly connected to the lower end cover. The axial height of the mounting post is greater than the axial thickness of the inner and outer magnets to form a heat insulation space.

[0013] In a preferred embodiment of a stable food processing machine, the cup holder is provided with a heat dissipation channel that communicates with the outside, and the heat insulation space constitutes part of the heat dissipation channel.

[0014] By incorporating the heat insulation space into a heat dissipation channel, the cool air within the channel can guide the heat generated by the heating plate downwards to the outside, effectively preventing the heat from the heating plate from being conducted downwards to the inner and outer magnets. This further reduces the temperature rise of the inner and outer magnets. At the same time, the heat generated by the motor during operation can also be dissipated through the heat dissipation channel, further reducing the motor's temperature rise and ensuring the stability and efficiency of the motor's operation.

[0015] In a preferred embodiment of a stable food processing machine, the motor further includes a lower end cover, the stator assembly is fixed to the lower end cover, the lower end cover is suspended and fixed to the heating plate, and a heat insulation plate is provided between the inner magnet, the outer magnet and the heating plate, and the heat insulation structure is a heat insulation plate.

[0016] By setting the heat insulation structure as a heat insulation plate, the heat on the heating plate can be effectively blocked when it is conducted downwards, preventing heat from being transferred to the inner and outer magnets. This ensures that the motor can maintain low-temperature operation even in high-temperature environments, further improving the stability and service life of the equipment.

[0017] In a preferred embodiment of a stable food processing machine, a circumferential limiting structure is also provided between the outer magnet and the inner magnet.

[0018] By providing a circumferential limiting structure between the outer and inner magnets, the relative positions of the inner and outer magnets are kept stable, preventing the inner and outer magnets from sliding relative to each other and separating, thus preventing them from rotating normally.

[0019] In a preferred embodiment of a stable food processing machine, the circumferential limiting structure includes a radially outwardly convex protrusion and a radially inwardly concave recess on the outer peripheral wall of the inner magnet. The protrusion and the recess extend along the axial direction of the inner magnet, and multiple protrusions and recesses are provided and continuously alternately arranged along the circumference of the inner magnet.

[0020] By configuring the circumferential limiting structure to include a radially outward-protruding portion on the outer peripheral wall of the inner magnet and a radially inward-recessed portion relative to the protrusion, the protrusion and recess on the outer peripheral wall of the inner magnet can be tightly attached to the outer magnet, greatly improving the bonding strength between the two magnets. When the motor operates at high speed, the inner magnet drives the shaft to rotate, and the outer magnet achieves a tight bond with the inner magnet through the protrusion and recess. This allows the outer magnet to apply a positive forward thrust to the inner magnet when transmitting torque to it, thanks to the protrusion and recess. The protrusions and recesses can transmit greater torque to the inner magnet, effectively preventing the inner magnet from experiencing a large reaction force when the shaft is subjected to a large torque, while the outer magnet still exerts a large forward driving force on the inner magnet. This can lead to relative sliding between the outer and inner magnets, causing them to separate and resulting in motor damage and inability to rotate. On the other hand, the presence of protrusions and recesses can greatly increase the contact area between the inner and outer magnets, enhance the friction between the magnets, effectively prevent relative sliding, ensure the stability and durability of the motor under high load operation, and extend the service life of the equipment.

[0021] In a preferred embodiment of a stable food processing machine, a fan is also fixedly connected to the bottom of the inner magnet.

[0022] By fixing a fan to the bottom of the inner magnet, the inner and outer magnets rotate synchronously, driving the fan to rotate as well. This drives the airflow near the inner and outer magnets, increasing the gas flow rate passing near the magnets per unit time, thereby improving heat dissipation and ensuring motor performance. Simultaneously, the fan is directly fixed to the bottom of the inner magnet, allowing it to simultaneously drive the fan while the inner magnet rotates the shaft. This dual-purpose design enhances its functionality and also enables rapid heat dissipation from within the motor. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0024] Figure 1 This is a cross-sectional view of a food processing machine according to one embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the rotor assembly in one embodiment of the present invention;

[0026] Figure 3 This is a cross-sectional view of a rotor assembly in one embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the rotor assembly from another angle in one embodiment of the present invention.

[0028] List of components and reference numerals:

[0029] 1-Cup body; 2-Pulverizing device; 3-Motor; 31-Rotor assembly; 311-Shaft; 312-Outer magnet; 313-Inner magnet; 3131-Protrusion; 3132-Recess; 314-Fan; 32-Stator assembly; 33-Lower end cover; 4-Heating plate; 5-Insulation space. Detailed Implementation

[0030] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0031] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0032] like Figures 1 to 4 As shown, this utility model provides a stable food processing machine, including a cup body 1 assembly. The cup body 1 assembly includes a grinding cup with a built-in grinding device 2, a heating plate 4 located below the grinding cup, a cup base surrounding the bottom of the grinding cup, and a motor 3 fixed in the cup base and driving the grinding device 2 to rotate. The motor 3 includes a rotor assembly 31 and a stator assembly 32 located on the outer periphery of the rotor assembly 31. The rotor assembly 31 includes a rotating shaft 311 and a magnet fixedly connected to the rotating shaft 311. The magnet includes an inner magnet 313 fixedly connected to the rotating shaft 311 and an outer magnet 312 covering the outer periphery of the inner magnet 313. A heat insulation structure is provided between the inner magnet 313, the outer magnet 312, and the heating plate 4.

[0033] This application, by configuring the magnet of the rotor assembly 31 of the motor 3 to include an inner magnet 313 fixed to the rotating shaft 311 and an outer magnet 312 covering the outer periphery of the inner magnet 313, allows the magnetic strength of the magnet to be greatly increased within a given size of the motor 3. This enables the motor 3 to generate greater torque to drive the crushing device 2, improving the working performance of the food processor and meeting user needs. Furthermore, by adjusting the material, grade, and thickness of the two magnets, the air gap magnetic field strength requirements of the motor 3 can be met for different needs, ensuring the stability of the food processor. Simultaneously, under the same radial dimensions and magnetic field strength, the inner magnet 313 and outer magnet 312 can be made flatter, effectively reducing the axial dimension of the motor 3, meeting the flattening requirements of existing models, and improving the compactness of the overall structure. Meanwhile, when the motor 3 is placed on the cup holder, the inner magnet 313 and the outer magnet 312 are very close to the heating plate 4. By providing a heat insulation structure between the inner magnet 313, the outer magnet 312 and the heating plate 4, the inner magnet 313 and the outer magnet 312 and the heating plate 4 are effectively isolated. This avoids the heat on the heating plate 4 being directly conducted to the inner magnet 313 and the outer magnet 312, which would cause a significant increase in magnet temperature. This effectively avoids the significant increase in magnet temperature during operation, which would cause the magnetism of the inner magnet 313 and the outer magnet 312 to decay due to high temperature, resulting in a significant reduction in magnet output torque. Consequently, the crushing device 2 would be unable to meet the processing requirements of ingredients with high torque, thus ensuring the working performance of the motor 3.

[0034] It should be noted that this application does not specifically limit the thermal insulation structure, which can be any of the following embodiments:

[0035] Example 1: In this example, the motor 3 also includes an upper end cover, the stator assembly 32 is fixed on the upper end cover, and the upper end cover is isolated between the inner magnet 313 and the outer magnet 312 and the heating plate 4. The heat insulation structure is the upper end cover.

[0036] By setting the heat insulation structure as the upper cover, and isolating the inner magnet 313, the outer magnet 312, and the heating plate 4 between them, the upper cover can not only fix the stator assembly 32, but also effectively insulate the inner magnet 313, the outer magnet 312, and the heating plate 4. This dual-purpose design eliminates the need for a separate heat insulation structure to isolate the heating plate 4, simplifies the structure of the motor 3, reduces manufacturing costs, and reduces the axial height of the heating plate 4 and the motor 3, thereby further compressing the axial height of the entire machine. This helps to improve the overall compactness of the food processing machine, optimize space utilization, and meet the needs of modern kitchens for equipment miniaturization.

[0037] Furthermore, the upper cover is fixed to the bottom of the heating plate 4, and a heat insulation gap is provided between the upper cover and the heating plate 4.

[0038] By providing a heat insulation gap between the upper cover and the heating plate 4, on the one hand, the upper cover and the heating plate 4 can be isolated, thereby preventing the heat on the heating plate 4 from being directly conducted to the upper cover and then from the upper cover to the stator assembly 32 and the magnet, which would cause a significant temperature rise in the entire motor 3. This helps to further reduce the temperature rise of the motor 3. On the other hand, the existence of the heat insulation gap allows the air driven by the motor 3 to form convection at the heat insulation gap when it rotates, thereby carrying away some of the heat below the heating plate 4 and on the upper cover, achieving effective heat dissipation for the upper cover and the entire motor 3, further reducing the temperature rise of the motor 3 and ensuring the stability of the motor 3's operation.

[0039] Example 2: As Figure 1 As shown, in this embodiment, the motor 3 also includes a lower end cover 33, the stator assembly 32 is fixed to the lower end cover 33, the lower end cover 33 is suspended and fixed to the heating plate 4, and the inner magnet 313 and the outer magnet 312 and the heating plate 4 are fitted with a gap to form a heat insulation space 5. The heat insulation structure is the heat insulation space 5.

[0040] By including a lower end cover 33 in the motor 3, fixing the stator assembly 32 to the lower end cover 33, and suspending the lower end cover 33 to the heating plate 4, the stator assembly 32 can be installed and fixed through the lower end cover 33, eliminating the need for an upper end cover. This further simplifies the overall structure of the motor 3, reduces the number of parts, and further reduces the axial dimension of the motor 3, contributing to a more streamlined design. Furthermore, the inner magnet 313 and the outer magnet 312 are fitted together with the heating plate 4 to form a heat insulation space 5. This heat insulation space 5 isolates the inner magnet 313 from the outer magnet 312 from the heating plate 4, effectively blocking heat conduction. Simultaneously, when the motor 3 rotates, it drives airflow within the heat insulation space 5, creating convection cooling to effectively cool the motor 3 and the heating plate 4, ensuring long-term stable operation of the motor 3, extending its service life, and improving equipment reliability.

[0041] It should be noted that this application does not specifically limit how the heat insulation space 5 is formed. As a preferred embodiment of this application, the heating plate 4 is provided with a mounting post that extends downward and is fixedly connected to the lower end cover 33. The axial height of the mounting post is greater than the axial thickness of the inner magnet 313 and the outer magnet 312, so as to form the heat insulation space 5.

[0042] As a preferred embodiment of this example, the cup holder is provided with a heat dissipation channel that communicates with the outside, and the heat insulation space 5 constitutes part of the heat dissipation channel.

[0043] By incorporating the heat insulation space 5 into a heat dissipation channel, the cool air within the heat dissipation channel can guide the heat generated by the heating plate 4 downwards to the outside, effectively preventing the heat on the heating plate 4 from being conducted downwards to the inner magnet 313 and the outer magnet 312. This further reduces the temperature rise of the inner magnet 313 and the outer magnet 312. At the same time, the heat generated by the motor 3 during operation can also be dissipated through the heat dissipation channel, further reducing the temperature rise of the motor 3 and ensuring the stability and efficiency of the motor 3's operation.

[0044] Example 3: In this example, the motor 3 also includes a lower end cover 33, the stator assembly 32 is fixed to the lower end cover 33, the lower end cover 33 is suspended and fixed to the heating plate 4, and a heat insulation plate is provided between the inner magnet 313 and the outer magnet 312 and the heating plate 4. The heat insulation structure is a heat insulation plate.

[0045] By setting the heat insulation structure as a heat insulation plate, the heat on the heating plate 4 can be effectively blocked by the heat insulation plate when it is conducted downward, preventing the heat from being transferred to the inner magnet 313 and the outer magnet 312, ensuring that the motor 3 can still maintain low temperature operation in high temperature environment, and further improving the stability and service life of the equipment.

[0046] As a preferred embodiment of this application, such as Figure 2 As shown, a circumferential limiting structure is also provided between the outer magnet 312 and the inner magnet 313.

[0047] By providing a circumferential limiting structure between the outer magnet 312 and the inner magnet 313, the relative positions of the inner magnet 313 and the outer magnet 312 are kept stable, thus preventing the inner magnet 313 and the outer magnet 312 from sliding relative to each other and causing them to separate and become unable to rotate normally.

[0048] It should be noted that this application does not specifically limit the circumferential limiting mechanism; as one preferred option in this application, such as... Figure 2 As shown, the circumferential limiting structure includes a radially outward protrusion 3131 and a radially inward recess 3132 on the outer peripheral wall of the inner magnet 313. The protrusion 3131 and the recess 3132 extend along the axial direction of the inner magnet 313. There are multiple protrusions 3131 and recesses 3132, which are continuously and alternately arranged along the circumference of the inner magnet 313.

[0049] By configuring the circumferential limiting structure to include a radially outward protrusion 3131 on the outer peripheral wall of the inner magnet 313 and a radially inward recess 3132 relative to the protrusion 3131, the protrusion 3131 and the recess 3132 on the outer peripheral wall of the inner magnet 313 are in close contact with the outer magnet 312, which can greatly improve the bonding strength between the two magnets. When the motor 3 runs at high speed, the inner magnet 313 drives the rotating shaft 311 to rotate, and the outer magnet 312 achieves a tight bond with the inner magnet 313 through the protrusion 3131 and the recess 3132. This allows the outer magnet 312 to transmit torque to the inner magnet 313, and the protrusion 3131 and the recess 3132 enable the outer magnet 312 to be inwardly... The inner magnet 313 applies a forward thrust, which can transmit a larger torque to the inner magnet 313. This effectively avoids the situation where, when the shaft 311 is subjected to a large torque, the inner magnet 313 is also subjected to a large reaction force, while the outer magnet 312 still has a large forward driving force on the inner magnet 313. In this case, the outer magnet 312 and the inner magnet 313 may slide relative to each other, causing them to separate and leading to damage to the motor 3 and preventing it from rotating. On the other hand, the presence of the protrusion 3131 and the recess 3132 can greatly increase the contact area between the inner magnet 313 and the outer magnet 312, enhance the friction between the magnets, effectively prevent relative sliding, ensure the stability and durability of the motor 3 under high load operation, and extend the service life of the equipment.

[0050] As a preferred embodiment of this application, such as Figure 3 , Figure 4 As shown, a fan 314 is also fixedly connected to the bottom of the inner magnet 313.

[0051] By fixing a fan 314 to the bottom of the inner magnet 313, the inner magnet 313 and the outer magnet 312 can rotate synchronously, driving the fan 314 to rotate as well. This drives the airflow near the inner magnet 313 and the outer magnet 312, increasing the gas flow rate near the magnets per unit time, thereby improving the heat dissipation effect on the magnets and ensuring the working performance of the motor 3. At the same time, the fan 314 is directly fixed to the bottom of the inner magnet 313, so that the inner magnet 313 can drive the shaft 311 to rotate while simultaneously driving the fan 314 to rotate. This dual-purpose design enhances its functionality and also allows for rapid heat dissipation from inside the motor 3.

[0052] The technical solutions protected by this utility model are not limited to the above embodiments. It should be noted that any combination of the technical solutions of any embodiment with one or more other embodiments is within the protection scope of this utility model. Although this utility model has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A food processing machine with stable operation, comprising a cup assembly, the cup assembly including a grinding cup with a built-in grinding device, a heating plate disposed below the grinding cup, a cup base surrounding the bottom of the grinding cup, and a motor fixed within the cup base and driving the grinding device to rotate, the motor including a rotor assembly and a stator assembly disposed around the outer periphery of the rotor assembly, characterized in that, The rotor assembly includes a rotating shaft and a magnet fixedly connected to the rotating shaft. The magnet includes an inner magnet fixedly connected to the rotating shaft and an outer magnet covering the outer periphery of the inner magnet. A heat insulation structure is provided between the inner magnet, the outer magnet, and the heating plate.

2. The food processing machine with stable operation according to claim 1, characterized in that, The motor also includes an upper end cover, the stator assembly is fixed on the upper end cover, and the upper end cover is isolated between the inner magnet, the outer magnet and the heating plate, and the heat insulation structure is the upper end cover.

3. The food processing machine with stable operation according to claim 2, characterized in that, The upper cover is fixed to the bottom of the heating plate, and a heat insulation gap is provided between the upper cover and the heating plate.

4. The food processing machine with stable operation according to claim 1, characterized in that, The motor also includes a lower end cover, the stator assembly is fixed to the lower end cover, the lower end cover is suspended and fixed to the heating plate, and the inner magnet and the outer magnet and the heating plate are fitted with a gap to form a heat insulation space, and the heat insulation structure is the heat insulation space.

5. A food processing machine with stable operation according to claim 4, characterized in that, The heating plate is provided with a mounting post that extends downward and is fixedly connected to the lower end cover. The axial height of the mounting post is greater than the axial thickness of the inner magnet and the outer magnet, so as to form the heat insulation space.

6. A food processing machine with stable operation according to claim 4, characterized in that, The cup holder has a heat dissipation channel that communicates with the outside, and the heat insulation space constitutes part of the heat dissipation channel.

7. The food processing machine with stable operation according to claim 1, characterized in that, The motor also includes a lower end cover, the stator assembly is fixed to the lower end cover, the lower end cover is suspended and fixed to the heating plate, and a heat insulation plate is provided between the inner magnet, the outer magnet and the heating plate, and the heat insulation structure is the heat insulation plate.

8. The food processing machine with stable operation according to claim 1, characterized in that, A circumferential limiting structure is also provided between the outer magnet and the inner magnet.

9. A food processing machine with stable operation according to claim 8, characterized in that, The circumferential limiting structure includes a radially outward protrusion on the outer peripheral wall of the inner magnet and a radially inward recess relative to the protrusion. The protrusion and the recess extend along the axial direction of the inner magnet. Multiple protrusions and recesses are provided and are continuously and alternately arranged along the circumference of the inner magnet.

10. A food processing machine with stable operation according to claim 1, characterized in that, A fan is also fixedly connected to the bottom of the inner magnet.

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