Food processor

Abstract

The utility model belongs to the technical field of kitchen appliances, and particularly relates to a food processor which comprises a main machine and a stirring cup detachably installed on the main machine, the stirring cup comprises a cup body and a cup base fixed below the cup body, a brushless motor is fixed in the cup base, a smashing cutter driven by the brushless motor is arranged in the cup body, and a power panel is arranged in the main machine. The upper end of the main machine is provided with a downwards-sunken installation groove, the lower end of the cup base is inserted into the installation groove, the brushless motor is located above the installation groove, the lower end of the cup base is provided with a heat dissipation opening for heat dissipation of the brushless motor, and a heat dissipation air channel for communicating the heat dissipation opening with the outside is arranged in the main machine. The groove side wall of the installation groove and the brushless motor are staggered in height, flattening of a host is achieved, rapid heat dissipation of the brushless motor is achieved, and efficient heat dissipation of the brushless motor is achieved through the heat dissipation opening and the heat dissipation air channel.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, specifically relating to a food processing machine. Background Technology

[0002] Traditional food processing machines, due to product pricing constraints and simple drive requirements, often use series motors for propulsion. The stator coils of a series motor protrude relative to the stator, and the necessary structural components such as carbon brushes and commutators contribute to the overall large size of the motor. This necessitates a larger design space to accommodate the motor in the food processing machine, resulting in a larger overall size that is inconvenient for handling and storage.

[0003] In most food processors, the series motor is located in the main unit. Some food processors, however, mount the series motor in the mixing cup's holder, with the main unit having a mounting cavity for the mixing cup. Because the series motor generates harsh noise during operation, such as rotor vibration and carbon brush friction, the mixing cup holder alone is insufficient to effectively block this noise. Typically, the cup holder needs to be completely submerged in the main unit's mounting cavity, with the series motor also submerged within, to meet noise reduction requirements. However, even with this setup, the main unit still needs sufficient height space to accommodate the cup holder. Since the mixing cup integrates the series motor, it also has considerable height, resulting in a large overall machine height, unstable center of gravity, and inconvenient operation.

[0004] With the continuous development and innovation of food processing machine technology, the applicant has previously developed a food processing machine using a variable frequency brushless motor. The variable frequency brushless motor is installed in the cup holder of the mixing cup, and the main unit has a mounting cavity for mounting the mixing cup. The cup holder and the variable frequency brushless motor are both recessed into the mounting cavity. This type of food processing machine utilizes a variable frequency brushless motor for drive, resulting in a compact size, constant and controllable speed and torque, low vibration, and low noise, thus improving the user experience. The cup holder in this food processing machine can accommodate a shorter brushless motor, thereby reducing the height of the cup holder compared to a series-wound motor, and allowing for better control of the mixing cup height. However, because the main unit needs to have a mounting cavity to accommodate the cup holder and enclose the brushless motor, the mounting cavity is quite deep, resulting in a still large main unit height, which causes inconvenience in use and storage. On the other hand, since the mounting cavity surrounds the cup holder, the heat from the brushless motor is blocked by the side wall of the mounting cavity as it is released outward through the cup holder. The heat is directly transferred to the main unit and cannot be directly exchanged with the outside, resulting in poor heat dissipation of the brushless motor. Similarly, mechanical vibration cannot be avoided between the cup holder and the side wall of the mounting cavity. The vibration is large, causing a numb and uncomfortable feeling when the user operates the program through the control panel on the main unit during the operation of the whole machine. Utility Model Content

[0005] This invention provides a food processing machine based on a brushless motor drive, which solves the problem in the prior art where the mounting cavity depth on the main unit is too large, resulting in a large main unit height and obstructing the heat release of the brushless motor, which is not conducive to the heat dissipation of the brushless motor.

[0006] The technical solution adopted by this utility model is as follows: This utility model provides a food processing machine, including a main unit and a mixing cup detachably installed on the main unit. The mixing cup includes a cup body and a cup base fixed below the cup body. A brushless motor is fixed inside the cup base. A pulverizing blade driven by the brushless motor is installed inside the cup body. A power board is installed in the main unit. The upper end of the main unit is provided with a downwardly recessed mounting groove. The lower end of the cup base is inserted into the mounting groove. The brushless motor is located above the mounting groove. A heat dissipation vent is opened at the lower end of the cup base for heat dissipation of the brushless motor. A heat dissipation duct is provided in the main unit to connect the heat dissipation vent to the outside.

[0007] The food processor provided by this utility model features a recessed mounting groove at the top of the main unit. The cup holder is inserted into this groove, ensuring the mixing cup is reliably mounted above the main unit, resulting in a stable structure. Since only the lower end of the cup holder is inserted into the mounting groove, and the brushless motor is located above the groove, the depth of the mounting groove is reduced, lowering the height of the main unit and achieving a flattened design, making it convenient for user operation and storage. Because the brushless motor is located above the mounting slot, and the sidewalls of the mounting slot are offset from the brushless motor in height, the heat generated by the brushless motor can be directly discharged to the outside through the cup holder without being blocked by the slot wall, achieving rapid heat dissipation. Furthermore, reducing the depth of the mounting slot also reduces the contact area between the cup holder and the main unit, thereby reducing vibration transmission and preventing the user from experiencing hand tingling when operating the control panel on the main unit during brushless motor operation. Further, a heat dissipation vent is provided at the lower end of the cup holder for the brushless motor to dissipate heat. A cooling duct is provided in the main unit to connect the heat dissipation vent to the outside, allowing outside cold air to enter the main unit through the cooling duct and vent to exchange heat with the brushless motor. The hot air is then discharged to the outside through the cooling duct, thus using airflow to carry away the heat from the brushless motor and reducing the residence time of hot air in the cup holder, achieving efficient heat dissipation for the brushless motor. Therefore, the food processing machine provided by this utility model can achieve a flattened main unit while improving the heat dissipation effect of the brushless motor.

[0008] In a preferred embodiment, the power board is provided with an IPM module for driving the brushless motor, and the host is provided with a heat insulation cavity to accommodate the IPM module, the heat insulation cavity being isolated from the heat dissipation duct.

[0009] By setting up an IPM module, or Intelligent Power Module, a highly integrated power electronic device, which integrates power switching devices, drive circuits, and fault detection circuits such as overvoltage, overcurrent, and overheating, the IPM module generates a lot of heat during operation. By isolating the heat insulation cavity containing the IPM module from the heat dissipation duct, the heat dissipation spaces are isolated from each other, preventing the heat from the IPM module from interfering with the heat dissipation airflow of the brushless motor. This is beneficial to the heat dissipation effect and reliability of both, achieving rapid heat dissipation and extending the life of the entire machine.

[0010] More preferably, the host is provided with a cover over the IPM module, and the cover and the bottom wall of the host form the heat insulation cavity.

[0011] By setting up a cover, a heat insulation cavity is formed by the cover and the bottom wall of the host, which facilitates the installation of the IPM module. The assembly is simple and the structure is simple. The heat of the IPM module can also be dissipated directly to the outside through the bottom wall of the host, resulting in high heat dissipation efficiency.

[0012] In a preferred embodiment, the heat dissipation duct includes an air inlet duct and an air outlet duct, and the heat dissipation port includes an air inlet and an air outlet respectively connected to the air inlet duct and the air outlet duct, wherein the air inlet duct and the air outlet duct are isolated from each other.

[0013] By configuring the cooling airflow into separate intake and exhaust ducts, unidirectional airflow is achieved. Cool air enters the heat sink through the intake duct and inlet, exchanges heat with the brushless motor within the heat sink, and then exhausts to the outside through the outlet and exhaust duct. This unidirectional flow of cool and hot air prevents mixing, thus improving cooling efficiency. Furthermore, the unidirectional airflow is more stable and orderly, helping to reduce wind resistance and pressure loss within the cooling airflow, while also reducing exhaust noise.

[0014] In a preferred embodiment, the heat dissipation vent includes an air inlet and an air outlet. The cup holder is provided with an air inlet guide tube communicating with the air inlet and an air outlet guide tube communicating with the air outlet. Both the air inlet guide tube and the air outlet guide tube extend upward from the bottom wall of the cup holder to the side of the brushless motor.

[0015] By incorporating inlet and outlet air guide tubes within the cup holder, the incoming cold air can be collected and guided, while the heated air after heat exchange is directed to the outlet. This facilitates orderly airflow, improving heat dissipation, reducing wind resistance and pressure loss within the cooling duct, and minimizing exhaust noise. Both the inlet and outlet air guide tubes extend upwards from the bottom wall of the cup holder to the side of the brushless motor. Therefore, the cold air entering through the inlet is guided directly to the side of the brushless motor by the inlet air guide tube, achieving a cooling effect. The heated air after heat exchange with the brushless motor is also directly discharged through the outlet air guide tube, reducing the residence time of hot air within the cup holder and achieving excellent heat dissipation.

[0016] More preferably, the brushless motor includes an end cover and a stator and a rotor located inside the end cover. The end cover has a first connecting port and a second connecting port, which correspond to the air inlet guide tube and the air outlet guide tube, respectively.

[0017] By opening a first connecting port and a second connecting port on the end cover, the first connecting port and the second connecting port are connected to achieve internal circulation heat dissipation of the stator and rotor inside the brushless motor, increasing the contact area and contact probability between the airflow and the stator and rotor, and improving the heat dissipation speed.

[0018] In a preferred embodiment, the heat dissipation vent is located on the bottom wall of the cup holder, and the bottom wall of the cup holder is provided with a side baffle extending upward along the edge of the heat dissipation vent and a top baffle connected to the upper end of the side baffle to laterally block the heat dissipation vent. The side baffle is provided with a lateral air passage.

[0019] By setting side baffles and top baffles at the edge of the heat dissipation vent, and opening lateral air vents in the side baffles, airflow is allowed to pass through the air vents and heat dissipation vents to achieve heat dissipation. At the same time, the side baffles and top baffles shield debris, preventing debris from directly entering the cup holder through the heat dissipation vents and protecting the electrical components inside the cup holder.

[0020] In a preferred embodiment, a fan is provided inside the cup holder, and the brushless motor includes an end cover and a stator and a rotor disposed inside the end cover. The lower end face of the end cover is higher than the opening of the mounting groove, and the fan is located inside the end cover and is driven by the rotor.

[0021] In a preferred embodiment, a fan is provided inside the cup holder, and the brushless motor includes an end cover and a stator and a rotor disposed inside the end cover. The lower end face of the end cover is higher than the opening of the mounting groove, and the fan is located outside the end cover and recessed into the mounting groove.

[0022] By incorporating a fan within the cup holder, whether the fan is inside or outside the end cap, it creates negative pressure or outward air pressure within the cup holder when rotating, accelerating airflow and facilitating rapid heat exchange between the cool air and the brushless motor, thus improving heat dissipation efficiency. When the fan is located inside the end cap, the brushless motor structure becomes more compact, further reducing its space requirement within the cup holder and lowering its overall height.

[0023] In a preferred embodiment, the cup holder has a clearance space located below the brushless motor, the sidewall of the mounting groove corresponds laterally to the clearance space, an upper coupler is provided in the clearance space located below the brushless motor, and an isolation gap is provided between the brushless motor and the upper coupler.

[0024] By providing clearance space within the cup holder below the brushless motor, and utilizing this clearance space to install the upper coupler, the cup holder achieves a compact structure, high space utilization, and electrical coupling with the host unit. The upper coupler's location below the brushless motor reduces the radial dimension of the cup holder. Furthermore, an isolation gap between the brushless motor and the upper coupler ensures a safe distance between them, enhancing operational safety. Attached Figure Description

[0025] 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:

[0026] Figure 1 This is a schematic diagram of the structure of a food processing machine in one embodiment of the present invention;

[0027] Figure 2 This is a partial cross-sectional view of a food processing machine according to one embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of an inverted stirring cup in one embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the host structure in one embodiment of the present invention;

[0030] Figure 5 This is a cross-sectional schematic diagram of the host in one embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the internal structure of the host in one embodiment of the present invention;

[0032] Figure 7This is a schematic diagram of the bottom wall structure of the host in one embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the air inlet of the cup holder in one embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the air outlet of the cup holder in one embodiment of the present invention.

[0035] Explanation of reference numerals in the attached drawings: 10. Main unit; 11. Mounting slot; 20. Stirring cup; 21. Cup body; 211. Crushing blade; 22. Cup base; 23. Heat dissipation vent; 231. Air inlet; 232. Air outlet; 24. Air inlet guide tube; 25. Air outlet guide tube; 26. Side baffle; 27. Top baffle; 28. Air passage; 30. Brushless motor; 31. Upper end cover; 32. Lower end cover; 33. Stator; 34. Rotor; 35. First connecting port; 36. Second connecting port; 40. IPM module; 51. Air inlet duct; 511. Cold air inlet; 512. Cold air outlet; 52. Exhaust duct; 521. Hot air outlet; 522. Hot air inlet; 60. Cover; 61. Insulation cavity; 70. Fan; 80. Upper coupler; 90. Lower coupler. Detailed Implementation

[0036] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0037] Many specific details are set forth in the following description 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. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0038] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] like Figure 1-9 As shown, in one embodiment, this utility model provides a food processing machine, combined with... Figure 1-4 As shown, the device includes a main unit 10 and a detachable mixing cup 20 mounted on the main unit 10. The mixing cup 20 includes a cup body 21 and a cup holder 22 fixed below the cup body 21. A brushless motor 30 is fixed inside the cup holder 22. A pulverizing blade 211 driven by the brushless motor 30 is installed inside the cup body 21. A power board is installed in the main unit 10. The upper end of the main unit 10 is provided with a downwardly recessed mounting groove 11. The lower end of the cup holder 22 is inserted into the mounting groove 11. The brushless motor 30 is located above the mounting groove 11. A heat dissipation vent 23 is opened at the lower end of the cup holder 22 for the brushless motor 30 to dissipate heat. A heat dissipation duct is provided in the main unit 10 to connect the heat dissipation vent 23 with the outside.

[0042] It should be noted that the brushless motor 30 being located above the mounting slot 11 means that the lower end wall of the brushless motor 30 is higher than or flush with the opening of the mounting slot 11. For example, the brushless motor 30 includes a lower end cover 32, and the bottom wall of the lower end cover 32 forms the lower end wall of the brushless motor.

[0043] The food processor provided by this utility model features a recessed mounting groove 11 at the upper end of the main unit 10. The cup holder 22 is inserted into the mounting groove 11, ensuring the mixing cup 20 is reliably mounted above the main unit 10, resulting in a stable structure. Since only the lower end of the cup holder 22 is inserted into the mounting groove 11, and the brushless motor 30 is located above the mounting groove 11, the depth of the mounting groove 11 is reduced, lowering the height of the main unit 10 and achieving a flattened design, making it convenient for user operation and storage. Because the brushless motor 30 is located above the mounting slot 11, and the sidewall of the mounting slot 11 is offset from the brushless motor 30 in height, the heat generated by the brushless motor 30 can be directly discharged to the outside through the cup holder 22 without being blocked by the wall of the mounting slot 11, achieving rapid heat dissipation. Furthermore, a heat dissipation vent 23 for the brushless motor 30 is provided at the lower end of the cup holder 22. A heat dissipation duct is provided in the main unit 10 to connect the heat dissipation vent 23 to the outside, allowing cold air from the outside to enter the main unit 10 through the heat dissipation duct and the heat dissipation vent 23 and exchange heat with the brushless motor 30. The hot air is then discharged to the outside through the heat dissipation duct, thereby using airflow to carry away the heat from the brushless motor 30 and reducing the residence time of the hot air in the cup holder 22, achieving efficient heat dissipation for the brushless motor 30. Therefore, the food processing machine provided by this utility model can achieve a flattened main unit 10 while improving the heat dissipation effect of the brushless motor 30.

[0044] In a preferred embodiment, such as Figure 5 As shown, the power board is equipped with an IPM module 40 that drives the brushless motor 30. The main unit 10 has a heat insulation cavity 61 that houses the IPM module 40. The heat insulation cavity 61 is isolated from the heat dissipation duct and the heat sink, meaning it is spatially isolated and not connected, so that the airflow used for cooling the brushless motor does not pass through the heat dissipation cavity 61. More preferably, as shown... Figure 5 As shown, the host 10 is provided with a cover 60 covering the IPM module 40, and the cover 60 and the bottom wall of the host 10 enclose a heat insulation cavity 61.

[0045] By setting up the IPM module 40, a highly integrated power electronic device, which integrates power switching devices, drive circuits, and fault detection circuits such as overvoltage, overcurrent, and overheating, the IPM module 40 generates a lot of heat during operation. By isolating the heat insulation cavity 61 that houses the IPM module 40 from the heat dissipation duct, the heat dissipation spaces are isolated from each other, avoiding interference between the heat from the IPM module 40 and the heat dissipation airflow of the brushless motor 30. This is beneficial to the heat dissipation effect and reliability of both, and achieves rapid heat dissipation and lifespan extension of the whole machine.

[0046] To achieve heat dissipation of the IPM module, more preferably, a vent hole corresponding to the IPM module 40 is opened on the bottom wall of the host 10 to enable the IPM module 40 to communicate with the outside world.

[0047] Alternatively, heat dissipation fins can be installed in the heat insulation cavity 61, and the IPM module can dissipate heat in the heat dissipation cavity 61 through the heat dissipation fins, without the need to open additional vents on the bottom wall of the host 10 to prevent insects and dust particles from entering the host.

[0048] By setting up a cover 60, a heat insulation cavity 61 is formed by the cover 60 and the bottom wall of the host 10, which facilitates the installation of the IPM module 40, makes assembly simple, and has a simple structure. The heat of the IPM module 40 can also be directly dissipated to the outside through the bottom wall of the host 10, resulting in high heat dissipation efficiency.

[0049] In a preferred embodiment, combined with Figure 5-7 The heat dissipation air duct includes an air inlet duct 51 and an air outlet 52. The heat dissipation port 23 includes an air inlet 231 and an air outlet 232 that are respectively connected to the air inlet duct 51 and the air outlet 52. The air inlet duct 51 and the air outlet 52 are isolated from each other.

[0050] Preferably, such as Figure 6 As shown, a cold air inlet 511 is opened on the bottom wall of the main unit to connect with the outside and form the inlet of the air intake duct 51, as shown. Figure 5 As shown, the main unit has a cold air outlet 512 located in the mounting slot that connects to the air inlet 231 of the cup holder. Figure 5 As shown, the main unit has a hot air inlet 522 located in the mounting slot, as... Figure 7 As shown, a hot air outlet 521 is opened on the side wall of the main unit to connect with the outside and form the outlet of the exhaust duct 52.

[0051] Combination Figure 5-7 As shown, the airflow path for the brushless motor is as follows: cold air enters the cold air duct 51 from the cold air inlet 511, connects with the air inlet 231 of the cup holder through the cold air outlet 512, and then enters the cup holder, where it exchanges heat with the brushless motor to form hot air. The hot air passes through the air outlet 232 of the cup holder to the hot air inlet 522, and is discharged to the outside through the hot air outlet 521 of the exhaust duct 52.

[0052] Of course, the inlet of the air intake duct 51 and the outlet of the exhaust duct 52 can be located in other positions of the main unit.

[0053] By configuring the heat dissipation air ducts as an inlet air duct 51 and an exhaust air duct 52, and isolating them from each other, the airflow forms a unidirectional flow. Cold air enters the cup holder 22 through the inlet air duct 51 and the air inlet 231. After heat exchange with the brushless motor 30 in the cup holder 22, the hot air is discharged to the outside through the air outlet 232 and the exhaust air duct 52. The cold and hot air flow in a single direction, avoiding the mixing of cold and hot air, thereby improving heat dissipation efficiency. At the same time, the unidirectional airflow is more stable and orderly, which helps to reduce wind resistance and pressure loss in the heat dissipation air duct, and also reduces exhaust noise.

[0054] In a preferred embodiment, such as Figure 8 , 9 As shown, the cup holder 22 is provided with an air inlet guide tube 24 that communicates with the air inlet 231 and an air outlet guide tube 25 that communicates with the air outlet 232. Both the air inlet guide tube 24 and the air outlet guide tube 25 extend upward from the bottom wall of the cup holder 22 to the side of the brushless motor 30.

[0055] By incorporating an inlet guide tube 24 and an outlet guide tube 25 within the cup holder 22, the cold air flowing in through the inlet 231 can be collected and guided, while the hot air after heat exchange is guided to the outlet 232. This facilitates orderly airflow, thereby improving heat dissipation, reducing wind resistance and pressure loss within the cooling duct, and lowering exhaust noise. Both the inlet guide tube 24 and the outlet guide tube 25 extend upwards from the bottom wall of the cup holder 22 to the side of the brushless motor 30. Therefore, the cold air entering through the inlet 231 is guided directly to the side of the brushless motor 30 by the inlet guide tube 24, achieving a cooling effect on the brushless motor 30. The hot air after heat exchange with the brushless motor 30 is also directly discharged through the outlet guide tube 25, reducing the residence time of hot air within the cup holder 22 and achieving good heat dissipation.

[0056] Of course, it should be noted that the air inlet guide tube 24 and the air outlet guide tube 25 can be an integrated cylindrical structure, or they can be a split structure with an air guide cavity formed by the side wall of the cup holder 22 and the baffle.

[0057] More preferably, combined with Figure 2 The brushless motor 30 includes end covers, comprising an upper end cover 31 and a lower end cover 32. The brushless motor 30 also includes a stator 33 and a rotor 34 located between the upper end cover 31 and the lower end cover 32. For example, the lower end cover has a first connecting port 35 and a second connecting port 36. (Refer to...) Figure 8 , 9 As shown, the first connecting port 35 and the second connecting port 36 correspond to the air inlet guide tube 24 and the air outlet guide tube 25, respectively.

[0058] By opening a first connecting port 35 and a second connecting port 36 in the end cover, the first connecting port 35 and the second connecting port 36 are connected to achieve internal circulation heat dissipation of the stator 33 and rotor 34 inside the brushless motor 30, thereby increasing the contact area and contact probability between the airflow and the stator 33 and rotor 34 and improving the heat dissipation speed.

[0059] In a preferred embodiment, such as Figure 8 As shown, the heat dissipation vent 23 is opened on the bottom wall of the cup holder 22. Taking the air inlet 231 as an example, the bottom wall of the cup holder 22 is provided with a side baffle 26 extending upward along the edge of the air inlet 231 and a top baffle 27 connected to the upper end of the side baffle 26 to horizontally block the air inlet 231. The side baffle 26 is provided with a lateral air passage 28.

[0060] By setting a side baffle 26 and a top baffle 27 at the edge of the heat dissipation vent 23, and the side baffle 26 having a lateral air passage 28, airflow is allowed to pass through the air passage 28 and the heat dissipation vent 23 to achieve heat dissipation. At the same time, the side baffle 26 and the top baffle 27 shield debris, preventing debris from directly entering the cup holder 22 through the heat dissipation vent 23 and protecting the electrical components inside the cup holder 22.

[0061] Understandably, the side and top baffle structures for the tree-mounted system are still applicable to the air outlet 232.

[0062] In a preferred embodiment, refer to Figure 2 The cup holder 22 is equipped with a fan 70. The brushless motor 30 includes an end cover and a stator 33 and a rotor 34 disposed in the end cover. The lower end face of the end cover is higher than the slot of the mounting groove 11. The fan 70 is located inside the end cover and is driven by the rotor 34.

[0063] In another preferred embodiment, a fan 70 is provided inside the cup holder 22. The brushless motor 30 includes an end cover and a stator 33 and a rotor 34 disposed inside the end cover. The lower end face of the end cover is higher than the opening of the mounting groove 11. The fan 70 is located outside the end cover and recessed into the mounting groove 11.

[0064] By incorporating a fan 70 within the cup holder 22, whether the fan 70 is inside or outside the end cap, its rotation creates negative pressure or outward air pressure within the cup holder 22, accelerating airflow and facilitating rapid heat exchange between the cool air and the brushless motor 30, thus improving heat dissipation efficiency. When the fan 70 is located inside the end cap, the brushless motor 30's structure becomes more compact, further reducing its space occupation within the cup holder 22, lowering the cup holder 22's height, and ultimately reducing the overall height of the device.

[0065] In a preferred embodiment, such as Figure 2 As shown, the cup holder 22 has a clearance space 220 located below the brushless motor 30. The sidewall of the mounting groove 11 corresponds laterally to the clearance space 220. Figure 3 An upper coupler 80 is provided in the clearance space 220 below the brushless motor 30. The upper coupler 80 cooperates with the lower coupler 90 of the host 10, and an isolation gap is provided between the brushless motor 30 and the upper coupler 80.

[0066] By providing a clearance space within the cup holder 22 below the brushless motor 30, and utilizing this clearance space to install the upper coupler 80, the cup holder 22 achieves a compact structure and high space utilization, while simultaneously enabling electrical coupling with the host unit 10. The upper coupler 80's location below the brushless motor 30 reduces the radial dimension of the cup holder 22. Furthermore, the isolation gap between the brushless motor 30 and the upper coupler 80 maintains a safe distance between them, enhancing operational safety.

[0067] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0068] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0069] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A food processing machine, comprising a main unit and a mixing cup detachably mounted on the main unit, the mixing cup comprising a cup body and a cup base fixed below the cup body, a brushless motor fixed inside the cup base, a pulverizing blade driven by the brushless motor disposed inside the cup body, and a power board disposed in the main unit, characterized in that, The upper end of the main unit is provided with a downwardly recessed mounting groove, the lower end of the cup holder is inserted into the mounting groove, the brushless motor is located above the mounting groove, the lower end of the cup holder is provided with a heat dissipation vent for the brushless motor to dissipate heat, and the main unit is provided with a heat dissipation duct that connects the heat dissipation vent to the outside.

2. The food processing machine according to claim 1, characterized in that, The power board is equipped with an IPM module that drives the brushless motor, and the host is provided with a heat insulation cavity to accommodate the IPM module, which is isolated from the heat dissipation duct.

3. A food processing machine according to claim 2, characterized in that, The host is provided with a cover over the IPM module, and the cover and the bottom wall of the host form the heat insulation cavity.

4. A food processing machine according to claim 1, characterized in that, The heat dissipation duct includes an air inlet duct and an air outlet duct, and the heat dissipation port includes an air inlet and an air outlet that are respectively connected to the air inlet duct and the air outlet duct. The air inlet duct and the air outlet duct are isolated from each other.

5. A food processing machine according to claim 1, characterized in that, The heat dissipation vent includes an air inlet and an air outlet. The cup holder is provided with an air inlet guide tube communicating with the air inlet and an air outlet guide tube communicating with the air outlet. Both the air inlet guide tube and the air outlet guide tube extend upward from the bottom wall of the cup holder to the side of the brushless motor.

6. A food processing machine according to claim 5, characterized in that, The brushless motor includes an end cover and a stator and a rotor located inside the end cover. The end cover has a first connecting port and a second connecting port, which correspond to the air inlet guide tube and the air outlet guide tube, respectively.

7. A food processing machine according to claim 1, characterized in that, The heat dissipation vent is located on the bottom wall of the cup holder. The bottom wall of the cup holder is provided with a side baffle extending upward along the edge of the heat dissipation vent and a top baffle connected to the upper end of the side baffle to horizontally block the heat dissipation vent. The side baffle is provided with a lateral air passage.

8. A food processing machine according to claim 1, characterized in that, A fan is installed inside the cup holder. The brushless motor includes an end cover and a stator and a rotor disposed inside the end cover. The lower end face of the end cover is higher than the opening of the mounting groove. The fan is located inside the end cover and is driven by the rotor.

9. A food processing machine according to claim 1, characterized in that, A fan is installed inside the cup holder. The brushless motor includes an end cover and a stator and a rotor disposed inside the end cover. The lower end face of the end cover is higher than the opening of the mounting groove. The fan is located outside the end cover and is recessed into the mounting groove.

10. A food processing machine according to claim 1, characterized in that, The cup holder has a clearance space located below the brushless motor. The sidewall of the mounting groove corresponds laterally to the clearance space. An upper coupler is provided in the clearance space located below the brushless motor, and an isolation gap is provided between the brushless motor and the upper coupler.

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