A compact food processor

Abstract

The application relates to a compact food processor, which comprises a cup body with an upper and lower opening; a cutter disc arranged at the opening of the bottom of the cup body to close the opening of the bottom of the cup body, the center of the cutter disc is provided with a mounting table, the mounting table is provided with a mounting hole, and a bearing is arranged in the mounting hole; a rotor assembly comprising a rotating shaft and a rotor, the upper end of the rotating shaft penetrates through the bearing to be positioned and connected with the cutter disc, and the rotor is arranged at the lower end of the rotating shaft and is suspended; a stator assembly fixed to the bottom side of the cutter disc and sleeved on the outer periphery of the rotor; and a cup bottom shell sleeved on the outer periphery of the rotor assembly and the stator assembly to wrap the rotor assembly and the stator assembly. The rotor assembly and the stator assembly are directly arranged at the bottom of the cutter disc, the rotor assembly is only positioned and connected between the upper end and the cutter disc, and the bottom end is suspended, so that the mounting structure of the bottom end of the rotor assembly and the stator assembly can be reduced, the overall height of the food processor is reduced, the product structure is compact, the weight is light, and the operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of food processing technology, and in particular to a food processing machine with a compact spatial structure. Background Technology

[0002] Existing food processing machines, especially high-speed blenders, typically include a mixing cup assembly and a main unit. The main unit houses a motor, and the mixing cup assembly is placed on top of the main unit. The mixing cup assembly contains pulverizing blades driven by the motor, which pulverize the food ingredients. A transmission connector for power transmission and a coupler for electrical connection are provided between the main unit and the mixing cup assembly. In this design, both the mixing cup assembly and the main unit occupy a significant amount of space, resulting in an excessively large blender that is inconvenient for consumers to use and store.

[0003] In existing technologies, such as CN201921599967.0, an improved motor mounting structure is disclosed in a blender, including a cup body, a cup base, a heating plate, a motor, and a blade assembly. The upper end of the cup base is fixedly connected to the lower end of the cup body, and the heating plate is disposed within the lower opening of the cup body, sealing the lower opening. Compared to traditional technical solutions, this solution places the motor within the cavity of the cup base and below the heating plate. Screws pass through a through hole on the motor from bottom to top and engage with a support base, thus suspending and fixing the motor to the heating plate. This configuration, compared to traditional blenders, eliminates the need for a separate motor mounting structure and a transmission connector between the motor and the blender assembly by integrating the motor and the blending cup assembly, thereby compressing the space of the blender.

[0004] However, this structural solution has limited space compression for the blender. It simply installs the existing motor directly at the bottom of the mixing cup without changing the size of the motor itself. It still has the motor shaft and its own fixing bracket, which makes the space size of the mixing cup assembly, especially the part used to install the motor, too large. It cannot achieve more complete volume compression and also increases the weight of the mixing cup assembly itself, causing inconvenience to the user. Summary of the Invention

[0005] This utility model provides a compact food processing machine to solve the technical problems of existing food processing machines, especially those with integrated cup and motor assembly, which still have a large structural space volume and increase the weight of the food processing machine when the motor is installed in the cup, making them inconvenient to use.

[0006] To address the aforementioned technical problems, this application provides a compact food processing machine, comprising: a cup body having upper and lower openings; a blade disc disposed at the opening at the bottom of the cup body to close the opening at the bottom of the cup body, a mounting platform disposed at the center of the blade disc, the mounting platform having a mounting hole, and a bearing disposed within the mounting hole; a rotor assembly including a rotating shaft and a rotor, the rotating shaft passing through the bearing to be positioned and connected to the blade disc, the rotor being disposed at one end of the rotating shaft and cantilevered; a stator assembly fixed to the bottom side of the blade disc and sleeved on the outer periphery of the rotor; and a cup bottom shell sleeved on the outer periphery of the rotor assembly and the stator assembly to enclose the rotor assembly and the stator assembly.

[0007] The food processing machine described in this application has a cutter disc at the bottom of the cup body to close the bottom opening of the cup body. Furthermore, a rotor assembly and a stator assembly are directly disposed at the bottom of the cutter disc. In particular, the bottom of the rotor assembly is suspended, and the combination of the rotor and stator assemblies achieves the function of driving rotation. This design further reduces the installation structure when installing the motor, especially the front and rear limiting structures of the motor itself. The suspended bottom of the rotor assembly eliminates the need for a positioning structure at the bottom, reducing the distance between the rotor assembly, stator assembly, and cutter disc, thereby lowering the overall height of the food processing machine. Furthermore, reducing the positioning structure also reduces the weight of the food processing machine, making it easier for users to directly pick up and operate. The stator assembly is directly sleeved on the outer periphery of the rotor assembly and can be used to drive the rotor assembly to achieve power drive function, without excessively increasing the axial height of the food processing machine. A bottom shell is then provided at the bottom of the cup body to enclose the rotor assembly and stator assembly, providing safety protection and making the food processing machine safer and more reliable. Thus, the food processing machine described in this application can ultimately provide users with a product that is compact, lightweight, and easy to operate.

[0008] In a preferred embodiment, the stator assembly includes an iron core and stator coils disposed on the iron core, the iron core being fixed to the lower side of the cutter head by a fixing member.

[0009] The rotor assembly is driven by an iron core and stator coils. The iron core is directly fixed to the underside of the cutter head via fasteners, reducing the complexity of the installation structure and making it more compact, thus reducing the overall size of the food processing machine. The absence of other mounting components also reduces the overall weight. The stator assembly is directly fixed to the underside of the cutter head by the iron core via fasteners, which also facilitates assembly of the food processing machine and reduces production costs.

[0010] In a preferred embodiment, the iron core is provided with a fixing hole or fixing groove, and the fixing member includes a screw that passes through the fixing hole or fixing groove and is fixedly connected to the lower side of the cutter head.

[0011] Using simple screws and fixing holes, the iron core and coil can be reliably fixed to the bottom of the cutter head, resulting in a simple structure. Since the stator assembly and rotor assembly are not directly connected, the impact of the rotor assembly on the stator assembly during operation is reduced. Therefore, the structure, which is directly fixed with screws, can also meet the driving requirements between the stator and rotor assemblies, resulting in lower cost and stable and reliable fixing.

[0012] In a preferred embodiment, the stator assembly further includes a stator bracket fixed to the bottom of the iron core, the stator bracket having a limiting groove at its center, the bottom end of the rotating shaft extending into the limiting groove, and a fitting clearance between the rotating shaft and the limiting groove.

[0013] For the food processing machine, the rotor assembly rotates at high speed during operation, but it does not exhibit excessive sway during normal operation. Therefore, the suspended bottom of the rotor assembly does not affect its stability. However, the food processing machine is also subject to external impacts during use. In this case, the rotor assembly is affected by sway, which can impact its operational stability. A limiting groove is provided at the bottom of the stator assembly, with a clearance between the limiting groove and the rotor shaft. During normal operation, the rotor shaft does not contact the limiting groove. Only when subjected to external sway impacts does the limiting groove provide limiting support for the rotor shaft, preventing it from deflecting and affecting normal operation. Furthermore, compared to existing technologies where the motor has a support bracket at the end, this application only requires a stator bracket with a limiting groove, which does not excessively increase the axial height of the stator assembly and also reduces the overall height of the food processing machine.

[0014] In a preferred embodiment, the rotor includes a fixed frame and a permanent magnet, the fixed frame being sleeved outside the rotating shaft, and the permanent magnet being fixed to the fixed frame.

[0015] The rotor is fixedly connected to the rotating shaft via a mounting bracket, and a permanent magnet is mounted on the mounting bracket. Rotation is achieved through magnetic transmission between the permanent magnet and the stator assembly. The rotor assembly does not require external electrical connection, resulting in a simpler structure. Furthermore, the stator assembly matched with the rotor assembly can be configured as a three-phase driven coil for more efficient drive.

[0016] In a preferred embodiment, the bottom end of the rotating shaft is further provided with a locking member to fix the rotor.

[0017] The rotor is directly fixed to the bottom end of the rotating shaft using a locking device, and the rotating shaft and the rotor rotate synchronously. The locking device is used in the axial direction to ensure that the rotor is installed stably and reliably. The structure is simple, stable and reliable.

[0018] In a preferred embodiment, the bearing comprises two rolling bearings stacked one on top of the other.

[0019] For a rotor assembly that is suspended in the air, the end will bear a large force. By placing two rolling bearings at the connection between the shaft and the tool holder, the strength of the fit between the shaft and the bearings is increased, as well as the length of the bearing-shaft fit, thus reducing the proportion of the cantilever formed by the rotor and enhancing the stability of the rotor assembly itself. It should be noted that the rolling bearings can be commonly used ball bearings, or deep groove ball bearings, needle roller bearings, double row bearings, etc. Of course, the bearings do not necessarily have to be rolling bearings; oil-impregnated bearings, long sliding bearings, etc., can also be used.

[0020] In a preferred embodiment, the cutter head further includes a sleeve located between two rolling bearings.

[0021] A sleeve is further provided between the two rolling bearings to further increase the fit length between the shaft and the cutter head, thereby improving the stability of the shaft. Simultaneously, the increased axial distance between the two rolling bearings and the sleeve can be absorbed by the cutter head, particularly its mounting platform, without excessively increasing the axial height of the food processing machine, thus achieving a compact structure.

[0022] In a preferred embodiment, the mounting platform includes a boss extending into the interior of the cup body and a ring platform located at the bottom of the cutter head.

[0023] The mounting platform includes a boss that partially extends into the cup body. The boss can also increase the distance between the pulverizing blade located at the top of the rotating shaft and the bottom of the cup body, thereby improving the pulverizing effect of the pulverizing blade. At the same time, a ring platform is provided at the bottom of the cutter disc. The ring platform can reliably install the bearing and also play a role in centering and positioning the rotor assembly, stator assembly, etc., to ensure the stable and reliable operation of the stator assembly and rotor assembly.

[0024] In a preferred embodiment, a heating element is further provided on the bottom side of the cutter head, and the heating element is located on the upper side of the stator assembly.

[0025] Further improvements to the heating element allow the food processor to simultaneously pulverize and cook ingredients. Since the cutter head has a mounting platform at its center for mounting the rotor assembly, this platform occupies a certain axial space. Specifically, when the mounting platform extends downwards from the bottom of the heating element, it creates a space between the rotor and the bottom of the cutter head. Positioning the heating element on the upper side of the stator assembly does not increase the axial height of the food processor, ensuring a compact overall structure. Furthermore, the heating element positioned on the outer periphery of the stator assembly has a larger radius, resulting in a longer heating element and thus greater heating power.

[0026] In a preferred embodiment, the rotor assembly further includes a fan fitted onto the shaft, the fan being located below the bearing.

[0027] The coils in the stator assembly generate heat during operation. A fan mounted directly on the shaft can dissipate heat from these coils. Positioning the fan below the bearing ensures both greater stability and more efficient airflow across the stator assembly. Attached Figure Description

[0028] Figure 1 This is a cross-sectional view of the overall structure of the first embodiment of the compact food processing machine of this utility model.

[0029] Figure 2 This is a cross-sectional view of the second embodiment of the compact food processing machine of this utility model.

[0030] Figure 3 for Figure 2 A magnified view of part A in the diagram.

[0031] Figure 4 for Figure 2 A magnified view of part B in the diagram.

[0032] Figure 5 for Figure 2 A magnified view of part C in the diagram.

[0033] Figure 6 This is a structural cross-sectional view of the third embodiment of the compact food processing machine of this utility model.

[0034] The labels in the diagram correspond to the following names:

[0035] 11. Cup body; 12. Main unit; 13. Control panel; 2. Cutter disc; 20. Mounting hole; 21. Boss; 22. Ring platform; 23. Sealing cavity; 24. Bearing cavity; 25. Fixing post; 26. Heating element; 27. Gasket; 3. Bearing; 30. Sleeve; 31. Bearing gasket; 32. First snap ring; 33. Second snap ring; 4. Rotating shaft; 41. Upper fixing hole; 42. Crusher; 43. Rivet; 44. Shaft seal; 45. Snap ring groove; 46. Lower fixing hole; 47. Screw; 5. Rotor; 51. Fixing bracket; 52. Upper cover plate; 53. Lower cover plate; 54. Permanent magnet; 6. Stator assembly; 61. Iron core; 62. Coil; 63. Stator bracket; 64. Stator boss; 65. Limiting groove; 66. Limiting post; 7. Cup bottom shell; 8. Cup lid. Detailed Implementation

[0036] To more clearly illustrate the overall concept of this application, a detailed description is provided below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and not intended to limit the application. Furthermore, it should be noted that, for ease of description, only the parts relevant to the application are shown in the accompanying drawings.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present application will now be described in detail with reference to the accompanying drawings and embodiments. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0038] like Figures 1-6As shown, this utility model discloses a compact food processing machine, which includes a cup body 11, a blade disc 2, a rotor assembly, a stator assembly 6, and a cup bottom shell 7. The cup body 11 has upper and lower openings, and preferably, the cup body 11 is made of glass. The blade disc 2 is disposed at the lower opening of the cup body 11 to close the lower opening of the cup body 11, so that the cup body 11 and the blade disc 2 enclose an internal processing space. A mounting platform is disposed at the center of the blade disc 2, and the mounting platform has a mounting hole that is connected vertically. A bearing 3 is also disposed in the mounting hole. The rotor assembly includes a rotating shaft 4 and a rotor 5. The rotating shaft 4 passes through the bearing 3 and extends into the cup body 11. Preferably, a pulverizing blade 42 is disposed at the top of the rotating shaft 4. The rotor 5 is fixedly connected to one end of the rotating shaft 4 and together with the rotor 5 forms a cantilever structure, that is, the rotating shaft 4 and the rotor 5 do not have a limiting structure at the lower end. The stator assembly 6 is fixed to the bottom side of the cutter head 2 and is sleeved on the outer periphery of the rotor 5 to drive the rotor 5 to rotate. The cup bottom shell 7 is disposed at the bottom of the cup body 11 and can be directly connected to the bottom side of the cup body 11 or to the bottom side of the cutter head 2. The cup bottom shell 7 encloses the rotor assembly and the stator assembly to prevent the user from directly triggering the rotor assembly and the stator assembly. Compared to existing technologies that mount the motor at the bottom of the heating plate, this application's solution involves connecting the rotor assembly and stator assembly to the cutter disc respectively. The rotor assembly is mounted to the cutter disc via a shaft and bearings, ensuring that the rotor assembly can rotate with the cutter disc assembly while also allowing the bottom of the rotor assembly to be suspended. This eliminates the need for the motor's end mounting structure found in existing technologies, saving both the space occupied by the aforementioned structure and further compressing the axial dimensions of the food processor. This significantly reduces the overall height of the food processor. Furthermore, eliminating the motor mounting structure found in existing technologies also makes the food processor lighter. Ultimately, this provides users with a food processor that is smaller, more compact, lighter, and easier to operate without reducing the cup volume.

[0039] Example 1.

[0040] Specifically, as a first embodiment of the compact food processing machine described in this utility model, such as Figure 1 As shown, this application provides a food processing machine, including a cup body 11, a cutter disc 2, a rotor assembly, a stator assembly 6, and a cup bottom shell 7. The cup body 11 is preferably cylindrical with openings at the top and bottom. It should be noted that the cylindrical cup body can be cylindrical, conical (larger at the top and smaller at the bottom or smaller at the top and larger at the bottom), or polygonal in cross-section. These details will not be elaborated here.

[0041] The cutter head 2 is positioned at the lower opening of the cup body 11 to close the lower opening, so that the cup body 11 and the cutter head 2 together form an internal processing space. A mounting platform is provided at the center of the cutter head 2, and the mounting platform has a vertically communicating mounting hole 20. A bearing 3 is disposed within the mounting hole 20. Preferably, the bearing 3 comprises two rolling bearings stacked vertically, with a sleeve 30 positioned between the two rolling bearings. The sleeve 30 abuts against the outer cylinders of the two rolling bearings. A first retaining spring 32 is also provided on the inner side of the bottom end of the mounting platform at the mounting hole, and the first retaining spring 32 abuts against the bottom side of the bearing.

[0042] The rotor assembly includes a shaft 4 and a rotor 5. The shaft 4 passes through the bearing 3 and extends into the cup body 11. Preferably, the top of the mounting hole 20 is also provided with a shaft seal 44, through which the shaft 4 passes. The top of the shaft 4 is also provided with a pulverizing blade 42, which is located inside the cup body 11 to pulverize the food inside the cup. Preferably, a gasket 27 is also provided between the pulverizing blade 42 and the mounting platform. The rotor 5 is sleeved on one end of the shaft 4, and no limiting structure is provided between the rotor 5 and the cup body 11 and the blade disc 2. That is, the rotor assembly is only rotatably limited by the shaft 4 and the bearing 3, and the shaft and stator form a cantilever structure at the lower end. This configuration further eliminates the need for a fixed structure for the motor, especially the positioning structure of the motor at the lower end, based on existing technology. The axial height of the shaft and rotor in this application is smaller, resulting in a more compact spatial structure and a lower height for the food processing machine.

[0043] The stator assembly 6 is fixed to the bottom side of the cutter head 3 and is sleeved on the outer periphery of the rotor 5 to drive the rotor 5. This arrangement reduces the installation requirements between the stator assembly and the rotor assembly, making the food processing machine easier and faster to assemble. At the same time, since the stator assembly is only sleeved on the outer periphery of the rotor assembly, it does not increase the axial height of the food processing machine, ensuring that the spatial structure of the food processing machine is compact and small.

[0044] The cup bottom shell 7 is disposed on the outer periphery of the rotor assembly and stator assembly 6 to enclose the rotor assembly and stator assembly 6, preventing the user from directly touching the rotor assembly and stator assembly 6, thus making the food processing machine safer and more reliable. The cup bottom shell 7 can be directly fixedly connected to the cup body 11; preferably, the cup bottom shell 7 and the cup body 11 are directly fixedly connected by threads.

[0045] Understandably, the cup bottom shell 7 is directly fixedly connected to the cutter disc to shield the stator assembly and rotor assembly.

[0046] Example 2.

[0047] As a second embodiment of the compact food processing machine described in this utility model, such as Figures 2-5 As shown, compared to Embodiment 1, in this embodiment, the stator assembly further includes a stator support. It should be noted that the specific Embodiment 1 and Embodiment 2 described are not intended to be completely independent of each other, but merely to illustrate two preferred technical solutions. Furthermore, the technical features and solutions of the two embodiments are common and can be referenced from each other.

[0048] Specifically, such as Figures 2-5 As shown, the food processor includes a cup body 11, a blade disc 2, a rotor assembly, a stator assembly, a cup bottom shell 7, and a cup lid 8. Compared to Embodiment 1, in this embodiment, the food processor further includes a main unit 12. The cup body 11, blade disc 2, rotor assembly, stator assembly, and cup bottom shell together constitute a mixing cup assembly. The mixing cup assembly is detachably mounted on the main unit 12. An operation panel 13 is provided on the front side of the main unit 12. An electrical coupler assembly is provided between the mixing cup assembly and the main unit 12.

[0049] The blade 2 is positioned at the bottom opening of the cup body 11 to close the lower opening of the cup body 11. Thus, the blade 2 and the cup body 11 enclose each other to form a processing space within the cup body, where food ingredients can be placed for processing. A mounting platform is located at the center of the blade 2. Preferably, the mounting platform includes a boss 21 extending into the cup body 11 and a ring platform 22 located at the bottom of the blade 21 and extending downwards. The mounting platform has mounting holes. Preferably, the mounting holes include a sealing cavity 23 formed by the boss 21 and a bearing cavity 24 formed by the ring platform 22. It should be noted that the boss 21 extending into the cup body 11 means that the boss 21 extends into the processing space formed by the cup body 11 and the blade 2, that is, axially, the boss extends into the processing space of the food processor. This allows the rotor assembly and stator assembly to be closer to the bottom wall of the blade 2.

[0050] The cutter head 2 is provided with a shaft seal 44 in the sealing cavity 23, and a bearing 3 is provided in the bearing cavity 24. Preferably, the bearing 3 includes two ball bearings. A bearing washer 31 is provided at the top of the bearing 3 in the bearing cavity 24, a second retaining ring 33 is provided between the two ball bearings, and a first retaining ring 32 is provided at the bottom of the two ball bearings.

[0051] The rotor assembly includes a rotating shaft 4 and a rotor 5. The rotating shaft 4 passes through the bearing 3 and the shaft seal 44, providing a rotatable and limited connection between the rotating shaft 4 and the blade disc 2. Preferably, the top end of the rotating shaft 4 has an upper fixing hole 41, and a pulverizing blade 42 and a rivet 43 are provided at the top end of the rotating shaft 4. The pulverizing blade 42 is fixed to the top end of the rotating shaft 4 by the rivet. The shaft seal 44 is fitted onto the outside of the rotating shaft 4, sealing the processing space inside the cup body from the outside and preventing food from leaking out of the rotating shaft 4. The middle section of the rotating shaft 4 has a retaining spring groove 45, and the second retaining spring 33 is engaged in the retaining spring groove 45 to abut against and limit the bearing 3.

[0052] The rotor 5 includes a fixing frame 51 and a permanent magnet 54. Preferably, the fixing frame 51 has an axially arranged mounting groove, and the permanent magnet 54 is disposed in the mounting groove. An upper cover plate 52 and a lower cover plate 53 are provided at both ends of the fixing frame 51. The upper cover plate 52 and the lower cover plate 53 are fixedly connected to the fixing frame 51 and fix the permanent magnet 54 at both ends. A lower fixing hole 46 is provided at the bottom end of the rotating shaft 4. A locking element is provided at the lower fixing hole 46 to lock and fix the rotor 5. Preferably, the locking element is a screw 47, which limits the rotor 5 axially to fix the rotor 5 to one end of the rotating shaft 4. The rotor 5 and the rotating shaft 4 can be provided with an irregular structure, or the rotor 5 and the rotating shaft 4 can be interference-fitted to achieve synchronous rotation of the rotor 5 and the rotating shaft 4.

[0053] The rotating shaft 4 and the rotor 5 are cantilevered at one end of the rotor assembly. That is, the rotor assembly is limited by the cutter head 2, which can ensure the stable and reliable rotation of the rotor assembly. This eliminates the need for a limiting structure at the bottom of the rotor assembly in the food processing machine. Compared with the prior art of setting the motor assembly at the bottom of the cutter head, the present application can eliminate the motor assembly mounting bracket structure, which can greatly reduce the axial height of the rotor assembly. This can reduce the axial height of the food processing machine, making the overall height of the food processing machine lower and the space structure more compact.

[0054] like Figure 3 , Figure 4As shown, a fixing post 25 is provided on the bottom side of the cutter head 2, and the stator assembly 6 is fixed on the fixing post 25. In the radial direction, the stator assembly 6 is sleeved on the outer periphery of the rotor 5. The stator assembly 6 includes an iron core 61 and a coil 62. Preferably, the iron core 61 has a fixing hole that mates with the fixing post 25, and screws are provided at the fixing hole and the fixing post to fix the iron core 61 and the coil 62 to the bottom side of the cutter head 2. The coil 62 matches the rotor 5. Preferably, the coil 62 is provided with three phases U, V, and W to realize frequency conversion drive of the rotor 5. At the same time, by setting multiple sets of coils, the height of the rotor and stator assembly can be further reduced, making the overall height of the food processing machine lower. Preferably, the radial clearance between the stator assembly 6 and the rotor assembly is 0.3mm to 1mm. If the clearance between the stator assembly and the rotor assembly is too small, the rotor assembly is prone to wobbling and contacting and rubbing against the stator assembly during operation, affecting the normal operation of the food processing machine. If the clearance between the stator assembly and the rotor assembly is set too large, the transmission efficiency between the stator assembly and the rotor assembly will be reduced, affecting the normal operation of the rotor assembly.

[0055] Preferably, the stator assembly 6 further includes a stator bracket 63 disposed at the bottom of the iron core 61. A stator boss 64 is disposed in the middle of the stator bracket 63, and a limiting groove 65 is disposed at the center of the stator boss 64. The limiting groove 65 is located on the outer periphery of the bottom end of the rotating shaft 4, and a fitting clearance is provided between the limiting groove 65 and the bottom end of the rotating shaft 4. During normal operation, the rotating shaft 4 will not contact the side wall of the limiting groove 65. However, when the food processing machine is subjected to swaying impact that affects the rotor assembly, the limiting groove 65 can radially support the rotor assembly, preventing the rotor assembly from being impacted and causing swaying.

[0056] Preferably, the bottom side of the blade 2 is also provided with a heating tube 26, wherein the heating tube 26 is located radially on the outer periphery of the stator assembly to heat and process the food inside the cup body 11.

[0057] Since the stator coils and heating elements generate heat during operation, a fan is needed to dissipate heat from the rotor and stator assemblies. Preferably, a fan is mounted on the shaft, positioned below the bearing and above the rotor. On one hand, fans typically have poorer rotational balance than rotors; therefore, placing the fan closer to the bearing reduces the torque generated during fan rotation, resulting in smoother operation of the rotor assembly. On the other hand, the fan's upper position allows airflow to pass over the rotor and stator assemblies without requiring additional air ducts, achieving stable and reliable heat dissipation.

[0058] As mentioned earlier, compared to the prior art where the motor is located at the bottom of the cutter head, this application directly sets the rotor assembly and stator assembly at the bottom of the cutter head, eliminating the excessive motor mounting structure and the motor's own support structure in the prior art. Utilizing the bearings of the cutter head, especially the two bearings positioned axially, ensures that the rotor assembly can operate stably and reliably even with its bottom end suspended. The stator assembly only needs to be fixed to the bottom of the cutter head and fitted around the outer periphery of the rotor assembly to drive it. By reducing the number of mounting structural components, the overall height of the food processor is further optimized and compressed. Furthermore, the reduced axial height of the rotor assembly also reduces the length of the suspended arm at the suspended end, resulting in less torque on the rotor assembly. This creates a virtuous cycle between the rotor assembly, stator assembly, and the food processor, ultimately achieving a stable and reliable operation, and significantly reducing the overall height of the food processor without changing the cup shape and capacity. This results in a compact, lightweight, and easy-to-operate food processor.

[0059] Understandably, a sleeve may also be provided between the two bearings, the sleeve extending the bearing in the axial direction.

[0060] Understandably, the rotor can be configured as an integral magnetic material and sleeved on the bottom end of the rotating shaft, and the rotor can be made of encapsulable BMC magnetic material, etc.

[0061] Understandably, the bearing can also be an oil-lubricated bearing; or, the bearing can be a double-row ball bearing, etc. Its main function is to increase the axial fit length between the bearing and the shaft.

[0062] It is understandable that when the rotor and the shaft are directly interference-fitted, the screw may not be required.

[0063] Understandably, the stator assembly does not have a stator support at the bottom, but instead has a boss directly on the bottom shell of the cup. The boss forms a limiting groove and engages with the shaft clearance limiting groove.

[0064] Understandably, the heating element may also be disposed on the inner periphery of the stator assembly.

[0065] Understandably, the food processing machine includes a heat insulation element disposed between the heating element and the stator assembly.

[0066] It is understandable that the food processing machine may also be without a main unit, and the operation panel or operation buttons may be directly placed on the handle of the cup body.

[0067] Understandably, the food processor may also have only a pulverizing function and not be equipped with a heating element.

[0068] Example 3.

[0069] As a third embodiment of the compact food processing machine described in this utility model, such as Figure 6 As shown, compared to Embodiment 2, in this embodiment, the stator support of the stator assembly is provided with a limiting post, and the bottom end of the rotating shaft is provided with a lower fixing hole. The limiting post extends into the lower fixing hole and is clearance-fitted with the lower fixing hole. It should be noted that the specific Embodiment 1, Embodiment 2, and Embodiment 3 described are not intended to be completely independent of each other, but are merely for more specifically illustrating two preferred technical solutions. The technical features and solutions of the multiple embodiments are common and can be used for mutual reference.

[0070] Specifically, such as Figure 6 As shown, the rotor assembly includes a shaft 4 and a rotor 5, with the rotor 5 sleeved on the bottom end of the shaft 4. A lower fixing hole 46 is provided at the bottom end of the shaft 4. The stator assembly includes a stator bracket 63 disposed at the bottom end of the stator assembly. A limiting post 66 is provided at the center of the stator bracket 63, and the limiting post 66 is inserted into the lower fixing hole 46 with a clearance fit. The limiting post 66 and the lower fixing hole 46 do not directly contact each other during normal operation, and there is no precise dimensional fit between them. Contact only occurs when the food processing machine is subjected to abnormal impact causing the rotor assembly to wobble, preventing excessive wobble of the rotor assembly and ensuring the safety of the food processing machine.

[0071] Understandably, the stator support is provided with a limiting hole, and the bottom of the rotating shaft is provided with a limiting post that can be inserted into the limiting hole.

[0072] Understandably, the stator assembly does not have a stator support, the upper surface of the cup bottom shell is directly provided with a limiting post, the bottom end of the rotating shaft is provided with a lower fixing hole, and the limiting post is inserted into the lower fixing hole for clearance limiting fit.

[0073] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0074] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if a device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures, but this does not imply that the actual device is inverted. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other orientations, rotated 90 degrees, or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0075] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special definition and therefore should not be construed as limiting the scope of protection of this application.

[0076] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or equivalent features without departing from the application's concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application will not be listed here.

Claims

1. A compact food processing machine, characterized in that, The food processing machine includes: The cup body has openings at the top and bottom; A blade disc is provided at the opening at the bottom of the cup body to close the opening at the bottom of the cup body. The blade disc has a mounting platform at its center, and the mounting platform has a mounting hole. A bearing is provided in the mounting hole. A rotor assembly includes a shaft and a rotor, the shaft passing through the bearing for positioning connection with the cutter head, the rotor being disposed at the bottom end of the shaft and connected to the cutter head only through the bearing, such that the bottom end of the rotor is a cantilevered configuration without other support; A stator assembly, which is fixed to the bottom side of the cutter head and sleeved on the outer periphery of the rotor; The bottom shell is fitted around the rotor assembly and stator assembly to enclose them.

2. The compact food processing machine as described in claim 1, characterized in that, The bearing comprises two rolling bearings stacked one on top of the other.

3. The compact food processing machine as described in claim 2, characterized in that, The cutter head also includes a sleeve located between two rolling bearings.

4. The compact food processing machine as described in claim 1, characterized in that, The rotor includes a fixed frame and a permanent magnet. The fixed frame is sleeved outside the rotating shaft, and the permanent magnet is fixed to the fixed frame.

5. The compact food processing machine as described in claim 1, characterized in that, The stator assembly includes an iron core and stator coils disposed on the iron core, and the iron core is fixed to the lower side of the cutter head by a fixing member.

6. The compact food processing machine as described in claim 5, characterized in that, The iron core is provided with a fixing hole or fixing groove, and the fixing member includes a screw that passes through the fixing hole or fixing groove and is fixedly connected to the lower side of the cutter head.

7. The compact food processing machine as described in claim 5, characterized in that, The stator assembly also includes a stator bracket fixed to the bottom of the iron core. The stator bracket has a limiting groove at its center. The bottom end of the rotating shaft extends into the limiting groove, and there is a fitting clearance between the rotating shaft and the limiting groove.

8. The compact food processing machine as described in claim 1, characterized in that, The bottom end of the shaft is also provided with a locking device to fix the rotor.

9. The compact food processing machine as described in claim 1, characterized in that, The mounting platform includes a boss extending into the body of the cup and a ring platform located at the bottom of the cutter head.

10. The compact food processing machine as described in claim 1, characterized in that, A heating element is also provided on the bottom side of the cutter head, and the heating element is located on the upper side of the stator assembly.

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