A food processor

Abstract

The utility model belongs to kitchen appliance technical field discloses a kind of food processing machines, including host computer and the stirring cup subassembly installed in host computer, stirring cup subassembly includes stirring cup, stirring knife being set in stirring cup, the transmission disk being connected with stirring knife, host computer includes casing and the electromagnetic drive device being fixed in casing to drive transmission disk in space, electromagnetic drive device includes annular stator body and the multiple stator teeth of coil being wound with being protruded on stator body end face, multiple stator teeth are arranged with interval around the center hole of stator body, form air inlet passage between adjacent stator teeth, multiple stator teeth are enclosed into and along axial hollow hole being communicated with air inlet passage and being penetrated, hollow hole is communicated with center hole and forms air outlet passage, fan assembly is also provided in casing, fan assembly is located in the air outlet end of air outlet passage. The application can realize the high efficiency and sufficient heat dissipation of stator center area, improve the heat dissipation efficiency of electromagnetic drive device.

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] Patent CN116172423B discloses a food processor with an electromagnetic drive device installed within the main unit. The mixing component is housed within the mixing cup assembly and includes a driven magnet. The electromagnetic drive device enables both the rotation of the mixing element and the attachment of the mixing component to the bottom of the cup. By employing an electromagnetic drive device, the main unit eliminates the need for a motor, resulting in significant space savings and a reduced overall height.

[0003] In one embodiment of the patent, the iron core is cylindrical, and an electromagnetic coil is spirally wound around the iron core. Multiple iron cores are surrounded by annular winding supports to form a stator assembly. In a second embodiment of the patent, each iron core includes a first end located below the driven magnet and a second end located away from the first end. The second ends of all iron cores converge at the same point or are located on the same plane.

[0004] Because the electromagnetic drive device generates heat during operation, both the winding support surrounding the stator and the second end where the iron core is concentrated at a point will obstruct heat dissipation from the iron core. In particular, when the iron core is concentrated, the heat in the center of the iron core cannot dissipate outward. If the electromagnetic drive device operates for a long time, there will be a problem of stator overheating. Even if this solution relies on the large spacing between the columnar iron cores to reduce the heat dissipation requirement, the large spacing of the iron core structure itself limits the transmission of torque and cannot achieve high torque output.

[0005] Patent CN112421813B discloses a stator core, stator assembly, motor, food processor, and air supply device. The food processor requires a motor to drive the stirring blades. The motor includes a housing, a rotor assembly, and a stator assembly. A fan blade assembly is included, which rotates under the drive of the rotor assembly, driving gas flow. Although the stator core is a hollow cylindrical structure, the central through-hole is used to house the rotor assembly, allowing for easy insertion of the rotor assembly's rotating shaft. Furthermore, the rotor blocks the upper end of the central through-hole in the stator. Therefore, despite the fan blade assembly, it can only drive airflow along the outer periphery and surface of the stator for heat dissipation. The heat-generating area in the center of the stator is obstructed by the rotating shaft and rotor, preventing smooth airflow in the central region and resulting in inefficient heat dissipation in the central area. Utility Model Content

[0006] This utility model provides a food processing machine that solves the heat dissipation problem of the drive device, especially the technical problem that the heat in the central area of ​​the stator cannot be efficiently dissipated, by optimizing the stator structure of the drive device in a drive mode where the main unit does not rely on a motor.

[0007] The technical solution adopted in this utility model is as follows:

[0008] This utility model provides a food processing machine, including a main unit and a stirring cup assembly installed on the main unit. The stirring cup assembly includes a stirring cup, a stirring blade disposed inside the stirring cup, and a transmission disk connected to the stirring blade. The main unit includes a housing and an electromagnetic drive device fixed in the housing to drive the transmission disk in a non-contact manner. The electromagnetic drive device includes an annular stator body and multiple stator teeth with coils wound around them, protruding from the end face of the stator body. The multiple stator teeth are arranged at intervals around the central hole of the stator body, forming an air inlet channel between adjacent stator teeth. The multiple stator teeth form a hollow hole that communicates with the air inlet channel and penetrates axially. The hollow hole communicates with the central hole to form an air outlet channel. The housing also provides a fan assembly located at the air outlet end of the air outlet channel.

[0009] The food processing machine provided by this utility model, by setting an electromagnetic drive device in the main unit, and the stirring cup including a transmission disk that drives the stirring blade, utilizes the electromagnetic drive device to drive the transmission disk to rotate in the air, thereby driving the stirring blade to rotate and achieving the crushing operation. This eliminates the need for a motor, simplifying the main unit structure and facilitating miniaturization. The electromagnetic drive device includes a stator, which comprises a ring-shaped stator body and multiple stator teeth with coils wound around them, protruding from the end face of the stator body. The stator in the electromagnetic drive device provided in this application differs from the stator structure in existing motors. In this application, the stator teeth protrude from the end face of the stator body, rather than the inner circumferential surface. Based on this, multiple stator teeth are arranged at intervals around the central hole of the stator body, forming air intake channels between adjacent stator teeth, thus creating multiple air intake channels from the multiple stator teeth. Simultaneously, multiple stator teeth form a hollow hole that connects to the air inlet channel and extends axially. This hollow hole connects to the central hole to form an air outlet channel. A fan assembly is positioned at the outlet end of this channel. When the fan assembly operates, it drives the cool airflow around the stator radially from the multiple air inlet channels directly into the hollow hole, i.e., the central region of the stator. The cool airflow exchanges heat with the central region of the stator, generating hot airflow. Powered by the fan assembly, the hot airflow is discharged along the air outlet channel formed by the connection between the hollow hole and the central hole, thereby carrying away heat from the coils, especially from the central region of the stator, achieving efficient and thorough heat dissipation. The connection between the air inlet and outlet channels forms a circulating air duct that connects to the outside. The casing only needs to connect to the outside through a seam or a separate vent to allow airflow to circulate into the central region of the stator, achieving heat dissipation for the stator body, stator teeth, and coils, resulting in efficient and thorough heat dissipation.

[0010] In addition, by setting the fan assembly at the air outlet end of the air outlet channel, and based on the positional arrangement of the air inlet and outlet channels, the airflow is limited to enter radially along the stator and exit axially. This can accelerate the entry of cold air near the electromagnetic drive device through multiple air inlet channels more quickly. At the same time, the hot airflow after heat exchange with the central area of ​​the stator can be concentrated and discharged through a single air outlet channel. Compared to the reverse arrangement, this avoids the situation where the hot airflow would spill into the casing and be difficult to discharge quickly, thereby further improving the effect of circulating heat dissipation for the electromagnetic drive device, especially the center of the stator, and improving heat dissipation efficiency.

[0011] In a preferred embodiment, the fan assembly includes an air guide shroud connected to an air outlet channel and fan blades housed within the air guide shroud. The fan blades are coaxially arranged with the air outlet channel. The housing has an air outlet, and the air guide shroud extends toward and communicates with the air outlet.

[0012] The fan assembly includes an air guide shroud and fan blades. The fan blades are coaxially aligned with the air outlet channel, allowing for more direct and efficient extraction of airflow from the channel. This prevents hot air from lingering in the outlet channel for too long, accelerating airflow and improving heat dissipation efficiency. The air guide shroud connects to the air outlet channel and extends towards and connects to the outlet, concentrating and guiding the hot airflow. This allows the hot air to flow along the shroud towards the outlet and be expelled from the casing, preventing escape and diffusion into the casing and re-entering the intake channel, thus affecting heat dissipation and protecting other components inside the casing.

[0013] In a preferred embodiment, the housing is further provided with an air inlet, and the housing is provided with a mounting cavity for mounting a control panel, the mounting cavity being connected between the air inlet and the air intake channel.

[0014] By connecting the mounting cavity of the control board between the air inlet and the air intake channel, when the fan assembly is working, it drives the external airflow from the air inlet of the housing into the housing, passes through the mounting cavity to dissipate heat from the control board, and then enters the air intake channel to dissipate heat from the center of the electromagnetic drive device, thereby achieving the overall heat dissipation effect of the host and extending its service life.

[0015] More preferably, the air guide cover includes a first cover that houses the fan blades and a second cover connected to the outlet of the first cover, the second cover being positioned between the outlet of the first cover and the air outlet, and the second cover gradually expanding toward the air outlet.

[0016] By setting the air guide cover as a separate first cover and second cover, the fan blades are installed on the first cover to form a fan shell, and the second cover is connected between the outlet of the first cover and the air outlet, which creates the effect of concentrating air and guiding the airflow to be discharged, thereby achieving rapid heat dissipation. At the same time, the second cover gradually expands towards the air outlet. According to Bernoulli's equation, the airflow velocity decreases when the airflow is discharged along the second cover, thereby reducing wind noise at the air outlet and reducing heat dissipation noise.

[0017] More preferably, the housing is provided with a mounting cover for the control panel, the mounting cover and the bottom wall of the housing enclose the mounting cavity, the air inlet is opened on the bottom wall of the housing to communicate with the mounting cavity, the mounting cover is provided with a ventilation opening, and the ventilation opening is communicated with the air inlet channel.

[0018] By setting an installation cover inside the housing, and using the installation cover and the bottom wall of the housing to form an installation cavity, the control board can be conveniently positioned and installed. At the same time, the structure of the installation cavity and the main unit structure are simplified, and the assembly efficiency is improved.

[0019] In a preferred embodiment, the electromagnetic drive device further includes an annular mounting bracket fixed to the other end face of the stator body. The mounting bracket is fixed to the housing and has a connecting hole corresponding to the position of the central hole. The hollow hole, the central hole, and the connecting hole communicate to form the air outlet channel.

[0020] By using a ring-shaped mounting bracket, the stator body is installed by fixing it to the housing, ensuring stable and reliable installation with a simple structure. The mounting bracket has a connecting hole corresponding to the central hole. Therefore, the ring-shaped mounting bracket does not obstruct airflow and does not affect the heat dissipation of the stator body, stator teeth, or coils. The hollow hole, the central hole, and the connecting hole form the air outlet channel, which also facilitates heat dissipation of the mounting bracket as airflow passes through the air outlet channel, achieving efficient heat dissipation for the entire electromagnetic drive device.

[0021] More preferably, the stirring cup is supported on the top wall of the housing, the mounting bracket includes an annular frame supporting the stator body and mounting lugs protruding from the outer periphery of the annular frame, the top wall of the housing is provided with mounting posts extending toward the mounting lugs, the mounting lugs are fixedly connected to the mounting posts, and the stator teeth are in contact with the top wall of the housing.

[0022] By using a mounting bracket and fixing it to the mounting post with mounting lugs, the electromagnetic drive unit can be hoisted, reducing the installation tolerance above the stator teeth. This allows the stator teeth to be close to the top wall of the housing, reducing the axial distance between the stator teeth and the transmission disk, thus achieving reliable and efficient transmission. Simultaneously, the combination of the ring bracket and mounting lugs does not obstruct the airflow path for heat dissipation, ensuring efficient heat dissipation in the central area of ​​the electromagnetic drive unit.

[0023] More preferably, the fan assembly is fixedly mounted on the mounting bracket.

[0024] By fixing the fan assembly to the mounting bracket to form a complete assembly, modular assembly is achieved. The mounting bracket integrates functions, reduces the number of parts in the host, simplifies the host structure, and facilitates the fan's proximity to the stator body, reducing airflow loss and enhancing heat dissipation efficiency.

[0025] In a preferred embodiment, the top wall of the housing extends with an annular wall surrounding the outer periphery of a plurality of stator teeth, and an annular channel communicating with the air inlet channel is formed between the annular wall and the outer peripheral wall of the stator teeth, and an air inlet communicating with the annular channel is opened on the bottom wall of the housing.

[0026] More preferably, the top wall of the housing is provided with a mounting groove for limiting the position of the stirring cup, and the annular wall is connected to the bottom end of the mounting groove.

[0027] An annular wall is set on the top wall of the housing, which surrounds multiple stator teeth, thereby converging the airflow around the stator teeth. When the inner cavity of the housing is large, the airflow can be guided towards the air intake channel and then quickly enter the air intake channel to achieve efficient heat dissipation of the central area of ​​the electromagnetic drive device.

[0028] The installation groove is set on the top wall of the casing to limit the installation of the mixing cup. At the same time, the annular wall connected to the bottom of the installation groove not only guides the airflow, but also strengthens the bottom wall structure of the installation groove, providing strong support for the mixing cup and preventing the casing from deforming. Attached Figure Description

[0029] 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:

[0030] Figure 1 This is a schematic diagram of the structure of a food processing machine in one embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the host structure in one embodiment of the present invention;

[0032] Figure 3 This is a top view of the electromagnetic drive device and fan assembly in one embodiment of the present invention.

[0033] Figure 4 This is a longitudinal sectional view of the electromagnetic drive device and fan assembly in one embodiment of the present invention.

[0034] Figure 5 This is a schematic diagram of the structure of the air guide shroud in one embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of the top cover of the casing being inverted in one embodiment of the present invention.

[0036] List of components and reference numerals:

[0037] 10. Stirring cup assembly; 11. Stirring cup; 12. Stirring blade; 13. Drive disk; 20. Main unit; 21. Housing; 211. Mounting post; 212. Annular wall; 213. Air inlet; 214. Air outlet; 30. Electromagnetic drive device; 31. Stator body; 32. Stator teeth; 33. Air inlet channel; 34. Air outlet channel; 40. Fan assembly; 41. Air guide cover; 411. First cover; 412. Second cover; 413. Stud; 42. Fan blade; 50. Control board; 60. Mounting bracket; 601. Mounting lug. Detailed Implementation

[0038] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] like Figure 1 , Figure 2 As shown, in one embodiment, this utility model provides a food processing machine, including a main unit 20 and a mixing cup assembly 10 installed on the main unit 20. The mixing cup assembly 10 includes a mixing cup 11, a mixing blade 12 disposed within the mixing cup 11, and a transmission disk 13 connected to the mixing blade 12. The main unit 20 includes a housing 21 and an electromagnetic drive device 30 fixed in the housing 21 to drive the transmission disk 13 in a non-contact manner. Figure 2 As shown, the electromagnetic drive device 30 includes a ring-shaped stator body 31 and multiple stator teeth 32 with coils wound around them, protruding from the end face of the stator body 31. The multiple stator teeth 32 are arranged at intervals around the central hole of the stator body 31, combined with... Figure 3 As shown, an air inlet channel 33 is formed between adjacent stator tooth poles 32, such as... Figure 4 As shown, multiple stator teeth 32 form a hollow hole that is connected to the air inlet channel 33 and extends through it axially. The hollow hole is connected to the center hole to form an air outlet channel 34. A fan assembly 40 is also provided in the housing 21, and the fan assembly 40 is located at the air outlet end of the air outlet channel 34.

[0044] In this embodiment, the drive disk 13 is located inside the mixing cup 11. A blade holder housing is provided on the outer periphery of the drive disk 13, and a drive shaft connected to the drive disk passes through the blade holder housing and connects to the mixing blade. With this configuration, the mixing blade is mounted in the mixing cup by the blade holder housing, and the blade assembly can be detached from the mixing cup as a whole, making it convenient for the user to disassemble and clean.

[0045] Of course, the blade assembly of this utility model is not limited to this. In another preferred embodiment, the transmission disk 13 is disposed in the cup seat outside the mixing cup, and the transmission shaft connected to the transmission disk passes through the bottom wall of the mixing cup and is connected to the mixing blade.

[0046] The food processing machine provided by this utility model has an electromagnetic drive device 30 set in the main unit 20. The stirring cup 11 includes a transmission disk 13 that drives the stirring blade 12. The electromagnetic drive device 30 drives the transmission disk 13 to rotate in the air, thereby driving the stirring blade 12 to rotate and realize the crushing operation. There is no need to set a motor, which simplifies the structure of the main unit 20 and facilitates the miniaturization of the main unit 20.

[0047] The electromagnetic drive device 30 includes a stator, which comprises an annular stator body 31 and multiple stator teeth 32 with wound coils protruding from the end face of the stator body 31. The stator in the electromagnetic drive device 30 provided in this application differs from the stator structure in existing motors. In this application, the stator teeth 32 protrude from the end face of the stator body 31, rather than its inner circumferential surface. Based on this, multiple stator teeth 32 are arranged at intervals around the central hole of the stator body 31, forming air inlet channels 33 between adjacent stator teeth 32. Thus, multiple stator teeth 32 will form multiple air inlet channels 33. Simultaneously, multiple stator teeth 32 enclose a hollow hole that communicates with the air inlet channels 33 and extends axially. The hollow hole communicates with the central hole to form an air outlet channel 34. A fan assembly 40 is disposed at the air outlet end of the air outlet channel 34.

[0048] like Figure 1 , 2 As shown in Figures 3 and 4, the arrows in the figures indicate the direction of airflow. When the fan assembly 40 is working, it drives the cold airflow around the stator to enter the hollow hole of the stator directly from the radial direction of the stator through multiple air inlet channels 33, i.e., the central area of ​​the stator. The cold airflow and the central area of ​​the stator exchange heat to generate hot airflow. Under the power of the fan assembly 40, the hot airflow is discharged along the air outlet channel 34 formed by the connection between the hollow hole and the central hole, thereby carrying away the heat of the coil, especially the heat of the central area of ​​the stator, achieving efficient and sufficient heat dissipation. The connection between the air inlet channel 33 and the air outlet channel 34 forms a circulating air duct. As long as the housing 21 is connected to the outside through the mating seam or a separately opened air vent, the airflow can circulate into the central area of ​​the stator, achieving heat dissipation of the stator body 31, stator teeth 32 and coils, resulting in efficient and more sufficient heat dissipation.

[0049] In addition, by setting the fan assembly 40 at the air outlet end of the air outlet channel 34, and based on the positional arrangement of the air inlet channel 33 and the air outlet channel 34, the airflow is limited to enter radially along the stator and exit axially. This can accelerate the entry of cold air near the electromagnetic drive device 30 through multiple air inlet channels 33, while the hot airflow after heat exchange with the central area of ​​the stator can be concentrated and discharged through a single air outlet channel 34. Compared to the reverse arrangement, this avoids the situation where the hot airflow would spill into the housing 21 and be difficult to discharge quickly if the reverse arrangement is used, thereby further improving the effect of circulating heat dissipation on the electromagnetic drive device 30, especially the center of the stator, and improving heat dissipation efficiency.

[0050] like Figure 2 , 3 As shown, in a preferred embodiment, the housing 21 is further provided with an air inlet 213, and the housing 21 is provided with a mounting cavity for mounting the control board 50, which is connected between the air inlet 213 and the air inlet channel 33.

[0051] By connecting the mounting cavity of the control board 50 between the air inlet and the air inlet channel 33, when the fan assembly 40 is working, it drives the external airflow into the housing 21 through the air inlet of the housing 21, cools the control board 50 through the mounting cavity, and then cools the center of the electromagnetic drive device 30 through the air inlet channel 33, thus achieving the overall heat dissipation effect of the host 20 and extending its service life.

[0052] Preferably, the housing 21 is provided with a mounting cover for the control panel 50. The mounting cover and the bottom wall of the housing 21 enclose a mounting cavity. An air inlet is opened on the bottom wall of the housing 21 to communicate with the mounting cavity. The mounting cover has a ventilation opening that communicates with the air inlet channel 33. Of course, in another embodiment, the housing 21 itself encloses a mounting cavity to accommodate the control panel 50.

[0053] By setting an installation cover inside the housing 21, and using the installation cover and the bottom wall of the housing 21 to form an installation cavity, the control board 50 can be conveniently positioned and installed. At the same time, the structure of the installation cavity is simplified, the structure of the main unit 20 is simplified, and the assembly efficiency is improved.

[0054] like Figure 2 , 4 As shown, in a preferred embodiment, the fan assembly 40 includes an air guide shroud 41 connected to the air outlet 34 and a fan blade 42 housed in the air guide shroud 41. The fan blade 42 is preferably centrifugal fan blade 42 and is coaxially arranged with the air outlet 34. The housing 21 has an air outlet 214. The air guide shroud 41 extends toward the air outlet and communicates with the air outlet.

[0055] Specifically, the air guide shroud 41 can be an integral volute structure, as preferably, such as Figure 5 As shown, the air guide cover 41 includes a first cover 411 that accommodates the fan blades 42 and a second cover 412 connected to the outlet of the first cover 411. The second cover 412 is connected between the outlet of the first cover 411 and the air outlet, and the second cover 412 gradually expands toward the air outlet 214.

[0056] The fan assembly 40 includes an air guide shroud 41 and fan blades 42. The fan blades 42 are coaxially aligned with the air outlet 34, allowing for more direct and efficient extraction of airflow from the air outlet 34. This prevents hot air from lingering in the air outlet 34 for too long, accelerating airflow and improving heat dissipation efficiency. The air guide shroud 41 is connected to the air outlet 34 and extends towards and connects to the air outlet, concentrating and guiding the hot airflow. This allows the hot air to flow along the air guide shroud 41 towards the air outlet and be expelled from the housing 21. This prevents hot air from escaping and diffusing into the housing 21 and re-entering the air inlet 33, thus affecting heat dissipation and preventing hot air from affecting other components inside the housing 21.

[0057] By setting the air guide shroud 41 as a split first shroud 411 and second shroud 412, the fan blades 42 are installed on the first shroud 411 to form a fan shell, and the second shroud 412 is connected between the outlet and the air outlet of the first shroud 411 to form the effect of gathering air and guiding the airflow to be discharged, thereby achieving rapid heat dissipation. At the same time, the second shroud 412 gradually expands towards the air outlet. According to Bernoulli's equation, when the airflow is discharged along the second shroud 412, the flow velocity decreases, thereby reducing wind noise at the air outlet and reducing heat dissipation noise.

[0058] Combination Figure 3 In a preferred embodiment, the electromagnetic drive device 30 further includes an annular mounting bracket 60 fixed to the other end face of the stator body 31. The mounting bracket 60 is fixed to the housing 21 and has a communicating hole corresponding to the position of the central hole. The hollow hole, the central hole, and the communicating hole communicate to form an air outlet channel 34. More preferably, the stirring cup 11 is supported on the top wall of the housing 21, and the mounting bracket 60 includes an annular frame supporting the stator body 31 and mounting lugs 601 protruding from the outer periphery of the annular frame. Figure 6 As shown, the top wall of the housing 21 is provided with a mounting post 211 extending toward the mounting lug, combined with... Figure 3 , 6 As shown, the mounting lug 601 is fixedly connected to the mounting post 211, and the stator tooth pole 32 is attached to the top wall of the housing 21.

[0059] The stator body 31 is installed by fixing the annular mounting bracket 60 to the housing 21, ensuring stable and reliable installation with a simple structure. The mounting bracket 60 has a connecting hole corresponding to the center hole. Therefore, the annular shape of the mounting bracket 60 ensures that it does not obstruct airflow and does not affect the heat dissipation of the stator body 31, stator teeth 32, or coils. The hollow hole, center hole, and connecting hole form an air outlet channel 34, which also facilitates heat dissipation of the mounting bracket 60 as airflow passes through the air outlet channel 34, achieving efficient heat dissipation for the entire electromagnetic drive device 30.

[0060] By using the mounting bracket 60, and fixing it to the mounting post 211 with the mounting lugs of the mounting bracket 60, the electromagnetic drive device 30 can be hoisted, reducing the installation tolerance above the stator teeth 32. This allows the stator teeth 32 to fit snugly against the top wall of the housing 21, narrowing the axial distance between the stator teeth 32 and the transmission disk 13, thus achieving reliable and efficient transmission. Simultaneously, the combination of the ring bracket and the mounting lugs does not obstruct the airflow path for heat dissipation, ensuring efficient heat dissipation in the central area of ​​the electromagnetic drive device 30.

[0061] Optionally, the fan assembly 40 is fixedly mounted on the mounting bracket 60. By fixing the fan assembly 40 to the mounting bracket 60, a complete assembly is formed, achieving modular assembly. The mounting bracket 60 integrates functions, reducing the number of parts in the host 20, simplifying the structure of the host 20, and facilitating the fan's proximity to the stator body 31, thereby reducing airflow loss and enhancing heat dissipation efficiency.

[0062] Of course, the fan assembly can also be mounted on the chassis; for details, refer to [reference needed]. Figure 5 As shown, the fan assembly 40 has a stud 413 on its air guide shroud 41. The stud is fixed to the housing 21 with screws to achieve the installation of the air guide shroud 41. The fan blades 42 are installed inside the air guide shroud 41.

[0063] like Figure 1-6 As shown, in a preferred embodiment, the top wall of the housing 21 extends with an annular wall 212 surrounding the outer periphery of the plurality of stator teeth 32. An annular channel communicating with the air inlet channel 33 is formed between the annular wall 212 and the outer peripheral wall of the stator teeth 32. An air inlet communicating with the annular channel is opened on the bottom wall of the housing 21. More preferably, the top wall of the housing 21 is provided with a mounting groove for limiting the position of the stirring cup 11, and the annular wall 212 is connected to the bottom end of the mounting groove.

[0064] An annular wall 212 is provided on the top wall of the housing 21, surrounding multiple stator teeth 32. This annular wall 212 concentrates the airflow around the stator teeth 32. When the internal cavity of the housing 21 is large, it can guide the airflow towards the air inlet channel 33, allowing it to quickly enter the air inlet channel 33 and achieve efficient heat dissipation in the central area of ​​the electromagnetic drive device 30. A mounting groove is provided on the top wall of the housing 21 to limit the installation of the stirring cup 11. At the same time, the annular wall 212 is connected to the bottom of the mounting groove, which not only guides the airflow but also strengthens the bottom wall structure of the mounting groove, providing strong support for the stirring cup 11 and preventing deformation of the housing 21.

[0065] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0066] 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.

[0067] 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 assembly mounted on the main unit, the mixing cup assembly comprising a mixing cup, a mixing blade disposed within the mixing cup, and a transmission disk connected to the mixing blade, the main unit comprising a housing and an electromagnetic drive device fixed within the housing for air-driven operation of the transmission disk, characterized in that, The electromagnetic drive device includes a ring-shaped stator body and multiple stator teeth with coils wound around them, protruding from the end face of the stator body. The multiple stator teeth are arranged at intervals around the central hole of the stator body, forming an air inlet channel between adjacent stator teeth. The multiple stator teeth form a hollow hole that communicates with the air inlet channel and extends axially. The hollow hole communicates with the central hole to form an air outlet channel. A fan assembly is also provided in the housing, and the fan assembly is located at the air outlet end of the air outlet channel.

2. The food processing machine according to claim 1, characterized in that, The fan assembly includes an air guide shroud connected to the air outlet channel and fan blades housed within the air guide shroud. The fan blades are coaxially arranged with the air outlet channel. The housing has an air outlet, and the air guide shroud extends toward and communicates with the air outlet.

3. A food processing machine according to claim 1 or 2, characterized in that, The housing is also provided with an air inlet, and the housing is provided with a mounting cavity for mounting a control board, the mounting cavity being connected between the air inlet and the air intake channel.

4. A food processing machine according to claim 2, characterized in that, The air guide cover includes a first cover that houses the fan blades and a second cover that is connected to the outlet of the first cover. The second cover is positioned between the outlet of the first cover and the air outlet, and the second cover gradually expands toward the air outlet.

5. A food processing machine according to claim 3, characterized in that, The housing is provided with a mounting cover for the control panel. The mounting cover and the bottom wall of the housing form the mounting cavity. The air inlet is opened on the bottom wall of the housing to communicate with the mounting cavity. The mounting cover has a ventilation opening, which communicates with the air inlet channel.

6. A food processing machine according to claim 1, characterized in that, The electromagnetic drive device further includes an annular mounting bracket fixed to the other end face of the stator body. The mounting bracket is fixed to the housing. The mounting bracket has a connecting hole corresponding to the position of the central hole. The hollow hole, the central hole and the connecting hole communicate to form the air outlet channel.

7. A food processing machine according to claim 6, characterized in that, The stirring cup is supported on the top wall of the housing. The mounting bracket includes an annular frame supporting the stator body and mounting lugs protruding from the outer periphery of the annular frame. The top wall of the housing is provided with mounting posts extending toward the mounting lugs. The mounting lugs are fixedly connected to the mounting posts, and the stator teeth are in contact with the top wall of the housing.

8. A food processing machine according to claim 6, characterized in that, The fan assembly is fixedly mounted on the mounting bracket.

9. A food processing machine according to claim 1, characterized in that, The top wall of the housing extends with an annular wall surrounding the outer periphery of multiple stator teeth. An annular channel communicating with the air inlet channel is formed between the annular wall and the outer peripheral wall of the stator teeth. An air inlet communicating with the annular channel is opened on the bottom wall of the housing.

10. A food processing machine according to claim 9, characterized in that, The top wall of the housing is provided with a mounting groove for limiting the position of the stirring cup, and the annular wall is connected to the bottom end of the mounting groove.

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