A food processor

Abstract

The utility model belongs to kitchen appliance technical field discloses a kind of food processing machines, including host computer, stirring cup, stirring knife, transmission disk, knife seat, and stirring cup bottom is equipped with heating disc, and host computer includes casing and electromagnetic drive device, and electromagnetic drive device includes annular stator body and multiple stator teeth, and multiple stator teeth are arranged around the center hole of stator body with interval, and form the first passageway communicated with outside between adjacent stator teeth, and multiple stator teeth are enclosed into hollow hole communicated with the first passageway and penetrate along axial direction, and hollow hole is communicated with center hole to form the second passageway communicated with outside;Fan is equipped in casing;The top end surface of multiple stator teeth is close to the lower surface of the top wall of casing, and heating disc is attached to the upper surface of the top wall of casing.The application is cooled by electromagnetic drive device to realize the cooling of casing and heating disc close to transmission disk area, avoid the appearance of local high temperature in this area, to prevent paste bottom phenomenon.

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] Existing magnetically driven food processors utilize magnetic force to drive the blade assembly to rotate in a vacuum, allowing the blade assembly to be removed from the mixing cup for easy disassembly and cleaning. Simultaneously, the mixing cup does not require perforation to install the blade assembly, achieving a good seal. Typically, the blade assembly includes a mixing blade, a drive disk connected to the mixing blade, and a blade holder fitted around the drive disk. The main unit includes an electromagnetic drive device that generates a changing magnetic field, causing the drive disk to rotate, which in turn drives the mixing blade to rotate.

[0003] There are two main types of existing electromagnetic drive devices: one is the stator assembly disclosed in patent CN116172423B, where the stator core is cylindrical, and electromagnetic coils are spirally wound around the core. Multiple cores are surrounded by annular winding supports to form the stator assembly. The electromagnetic coils, when energized, create a magnetic field that drives the stirring blades to rotate. The other type, disclosed in patent CN112421813B, uses a motor to drive a turntable. The turntable is equipped with magnetic components, and during its rotation, the drive disk and stirring blades rotate.

[0004] However, during the research and development process, the applicant discovered that regardless of the driving method, the aforementioned food processing machine experienced localized scorching at the bottom of the mixing cup. Further investigation revealed that the high-speed rotation of the motor and the heating of the coils during operation of the electromagnetic drive device resulted in higher temperatures near the drive device. Simultaneously, magnetic eddy currents were generated between the area around the transmission disk within the blade holder and the area directly opposite the electromagnetic drive device, causing temperature concentration on the bottom wall of the mixing cup at the point directly opposite the transmission magnet. Since the blade assembly is mounted on the bottom of the mixing cup via the blade holder, gaps inevitably exist between the blade holder and the bottom wall, allowing the slurry to flow to the bottom wall, leading to scorching in the areas of concentrated temperature and uneven heating of the bottom of the mixing cup. This uneven heating of the slurry, if caused by localized overheating, could even result in some parts of the slurry remaining undercooked.

[0005] Although existing technologies include a heat dissipation device inside the main unit, this device can only circulate airflow over the motor surface, providing some cooling effect. However, the heat in the central area of ​​the motor is still difficult to dissipate, as is the heat in the area where the mixing cup faces the drive disk. Therefore, it is still impossible to avoid problems such as scorching at the bottom of the mixing cup or uneven heating of the slurry. Utility Model Content

[0006] This invention provides a food processing machine that addresses the technical problem of localized scorching at the bottom of the mixing cup due to concentrated temperature caused by magnetic eddy currents generated near the transmission disk in a magnetically driven food processing machine.

[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, a stirring cup detachably installed in the main unit, and a blade assembly detachably installed inside the stirring cup. The blade assembly includes a stirring blade, a transmission disk connected to the stirring blade, and a blade holder fitted around the outer periphery of the transmission disk. A heating plate is provided at the bottom of the stirring cup. The main unit includes a housing and an electromagnetic drive device installed in the housing to drive the transmission disk remotely. The electromagnetic drive device includes a ring-shaped stator body and multiple stator teeth with coils wound around the top of the stator body. The multiple stator teeth are arranged at intervals around the central hole of the stator body, forming a first channel communicating with the outside between adjacent stator teeth. The multiple stator teeth form a hollow hole communicating with the first channel and penetrating axially. The hollow hole communicates with the central hole to form a second channel communicating with the outside. A fan is provided inside the housing to drive airflow along the first and second channels. The top surfaces of the multiple stator teeth are close to the lower surface of the top wall of the housing, and the heating plate is attached to the upper surface of the top wall of the housing.

[0009] The food processing machine provided by this utility model includes an electromagnetic drive device comprising a ring-shaped stator body and multiple stator teeth with coils wound around them, protruding from the top of the stator body. The stator body and the stator teeth define a first channel and a second channel. The electromagnetic drive device itself has a structure that allows for airflow and heat dissipation through both the first and second channels. When the fan operates, taking the airflow entering through the first channel as an example, since the top surfaces of the multiple stator teeth are close to the lower surface of the top wall of the casing, the airflow exchanges heat with the top wall of the casing during its flow within the first channel, carrying away heat from the casing. Heat is transferred from the heating plate, which is attached to the top surface of the casing. Therefore, as the airflow dissipates heat from the casing, it indirectly exchanges heat with the heating plate. The airflow, after exchanging heat through the first channel, exits through the second channel, carrying away heat from the casing and the heating plate. This further dissipates heat from the casing and the area near the drive disk, even though magnetic eddy currents may form between the drive disk and the electromagnetic drive unit. The airflow through the first and second channels effectively dissipates heat from the heating plate, especially in this area, preventing localized overheating and thus avoiding burnt surfaces. Similarly, if the fan reverses the airflow, directing it from the second channel into the first channel and out through the second channel, the same effect can be achieved.

[0010] Furthermore, a first channel connecting to the outside is formed between adjacent stator teeth, and multiple stator teeth surround a hollow hole that connects to the first channel and extends axially. This hollow hole connects to the central hole, forming a second channel connecting to the outside. Therefore, the first and second channels achieve excellent heat dissipation in the central area of ​​the electromagnetic drive device. Compared to traditional heat dissipation methods where airflow only passes through the device surface, this method offers better heat dissipation and higher efficiency. Moreover, the top surfaces of multiple stator teeth are close to the lower surface of the top wall of the housing, and the heating plate is attached to the upper surface of the top wall of the housing. This ensures that the transmission disk and electromagnetic drive device remain within a preset transmission dimension range, guaranteeing reliable power transmission even during mass production applications of the food processing machine. This facilitates the commercial application and promotion of non-contact magnetic transmission technology.

[0011] In a preferred embodiment, the stator teeth are attached to the lower surface of the top wall of the housing, and the fan is coaxially arranged below the second channel, drawing the airflow of the second channel downwards.

[0012] By attaching the stator teeth to the lower surface of the top wall of the housing, gaps between the stator teeth and the housing are avoided, preventing disordered airflow for heat dissipation. Therefore, when airflow passes through the first channel formed between adjacent stator teeth, the airflow in different first channels can flow orderly along the first channel, directly contacting the top wall of the housing and efficiently carrying away heat from the top wall and indirectly removing heat from the heating element. By coaxially arranging the fan below the second channel and drawing the airflow downwards from the second channel, the airflow entering the second channel from the first channel can be more fully extracted, preventing the already heat-exchanged hot airflow from remaining in the first and second channels for too long, thus accelerating airflow speed and improving heat dissipation efficiency. Simultaneously, the downward extraction of airflow from the second channel by the fan allows cool airflow to enter radially along multiple first channels, and the heat-exchanged hot airflow to be concentrated and discharged axially along the second channel, enhancing the airflow for heat dissipation. This concentrated discharge of hot air prevents it from escaping and diffusing into the housing and re-entering the first channel, thus affecting heat dissipation and preventing hot airflow from affecting other components inside the housing.

[0013] In a preferred embodiment, the housing has an air outlet, and the housing also has an air guide shroud. The air guide shroud is positioned between the second channel and the air outlet, and the fan is housed within the air guide shroud.

[0014] The air guide shroud is connected between the second channel and the air outlet, which serves to gather and guide the hot airflow, allowing the hot airflow to flow along the air guide shroud to the air outlet and be discharged from the casing. This prevents the hot airflow from escaping and spreading into the casing and re-entering the air intake channel, thus affecting the heat dissipation effect, and also prevents the hot airflow from affecting other components inside the casing.

[0015] In a preferred embodiment, the electromagnetic drive device further includes an annular mounting bracket fixed to the bottom end 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 second channel.

[0016] 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.

[0017] In a preferred embodiment, the housing includes a shell with an opening at the top and a top cover encapsulated at the opening. The top cover is pasted and fixed to the upper end face of the stator tooth pole. The stator body is suspended and fixed to the shell by a mounting bracket, and the top cover is sealed and pressed tightly against the edge of the opening. The heating plate is attached to the top cover.

[0018] By dividing the housing into a shell and a top cover, with the top cover set independently of the shell and glued and fixed to the upper end face of the stator teeth, a tight fit is achieved. There will be no assembly errors in the area above the stator teeth, resulting in high installation accuracy. Furthermore, after the top cover is fixed to the shell, the heating plate adheres to the top cover, ensuring that the stator teeth of the transmission disk and electromagnetic drive device always remain within the preset transmission dimension range, achieving reliable transmission.

[0019] In a preferred embodiment, the mounting bracket includes an annular frame supporting the stator body and a mounting lug protruding from the outer periphery of the annular frame. The top of the housing is provided with a downwardly extending mounting post, and the mounting lug is fixedly connected to the mounting post.

[0020] By using a mounting bracket and securing it to the mounting post with mounting lugs, the electromagnetic drive unit can be hoisted, reducing the installation tolerance between the stator teeth and the top wall of the housing. 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.

[0021] In a preferred embodiment, the top cover arches upwards to protrude from the opening and support the heating plate. A flange is provided at the lower edge of the top cover, the flange is pressed against the edge of the opening, and a sealing ring is held between the flange and the edge of the opening.

[0022] The top cover arches upwards from bottom to top to support the heating plate through the opening, facilitating a tight fit between the top cover and the heating plate while providing effective support for the heating plate. A flange is provided at the lower edge of the top cover, and a sealing ring is clamped between the flange and the edge of the opening. This achieves a sealed assembly of the top cover and the housing, preventing water from entering the housing. Furthermore, the sealing ring absorbs assembly tolerances, ensuring a highly reliable fit between the top cover and the stator teeth, as well as reliable fixation between the top cover and the housing, and between the electromagnetic drive device and the housing.

[0023] In a preferred embodiment, the distance S between the stator tooth pole and the top wall of the housing is ≤1mm.

[0024] If the distance S between the stator teeth and the top wall of the housing is ≤1mm, the stator teeth will be close to the top wall of the housing, avoiding an excessively large gap between them. For example, if the gap is greater than 1mm, the airflow will escape into the gap when passing through the first channel, causing disordered airflow interference and affecting the airflow circulation rate. By setting a reasonable distance S, and S≤1mm, the cold airflow can diffuse appropriately between the stator teeth and the top wall of the housing, expanding the heat exchange area between the cold airflow and the housing to a certain extent, and achieving efficient heat dissipation. Of course, when S=0, the stator teeth are attached to the lower surface of the top wall of the housing, and the airflow in different first channels can flow orderly along the first channel, and then directly contact the top wall of the housing, efficiently carrying away the heat of the top wall of the housing and indirectly carrying away the heat of the heating plate, preventing the heating plate from experiencing local high temperature and burning.

[0025] In a preferred embodiment, the housing has an air inlet communicating with a first channel and an air outlet communicating with a second channel, and the housing has a mounting cavity for mounting a control board, the mounting cavity being connected between the air inlet and the first channel.

[0026] The fan operates, driving airflow along the direction of the air inlet, the first channel, the second channel, and the air outlet, forming a circulating cooling airflow to achieve cyclical heat dissipation for the electromagnetic drive device, the top wall of the casing, and the heating plate. By connecting the mounting cavity between the air inlet and the first channel, the airflow entering from the air inlet can also dissipate heat from the control board, achieving a good overall heat dissipation effect for the host.

[0027] In a preferred embodiment, the top wall of the housing includes a supporting top plate that fits against the heating plate and a recessed platform that sinks from the edge of the supporting top plate. The top surface of the stator tooth pole is close to the supporting top plate, and the recessed platform has a drain outlet that communicates with the outside.

[0028] By attaching the stator teeth to the top surface of the stator teeth while the top plate is in contact with the heating plate, airflow through the first and second channels achieves good heat dissipation for the top plate and the heating plate. At the same time, by setting a recessed platform that sinks from the edge of the top plate and has a drain outlet, water spillage or water stains from cleaning the mixing cup are prevented from accumulating on the top of the casing, thus preventing water from flowing onto the top plate. This saves the user the trouble of cleaning and also prevents water from remaining on the top plate and affecting the heat dissipation effect of the high-temperature area of ​​the heating plate facing the transmission disk. 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 the fan in one embodiment of the present invention;

[0033] Figure 4 This is a longitudinal sectional view of the electromagnetic drive device and the fan 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 inverted housing of the casing in one embodiment of the present invention;

[0036] Figure 7 This is an exploded view of the host computer in one embodiment of the present invention;

[0037] Figure 8 This is a partial exploded view of the food processing machine in one embodiment of the present invention.

[0038] List of components and reference numerals:

[0039] 10. Stirring cup assembly; 11. Stirring cup; 12. Stirring blade; 13. Drive disk; 14. Blade holder; 15. Drive shaft; 16. Blade assembly; 17. Heating plate; 20. Main unit; 21. Housing; 211. Mounting post; 213. Air inlet; 214. Air outlet; 23. Shell; 24. Top cover; 241. Flanged edge; 242. Support plate; 243. Settled platform; 25. Bottom cover; 26. Sealing ring; 30. Electromagnetic drive device; 31. Stator body; 32. Stator tooth pole; 33. First channel; 34. Second channel; 41. Air guide shroud; 411. First cover; 412. Second cover; 413. Stud; 42. Fan; 50. Control board; 60. Mounting bracket; 601. Mounting lug. Detailed Implementation

[0040] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] like Figure 1 , Figure 2 As shown, in one embodiment, this utility model provides a food processing machine, including a main unit 20, a mixing cup 11 detachably installed on the main unit 20, and a blade assembly 16 detachably installed inside the mixing cup 11. The blade assembly 16 includes a mixing blade 12, a transmission disk 13 connected to the mixing blade 12 via a transmission shaft 15, and a blade holder 14 fitted around the outer periphery of the transmission disk 13. A heating plate 17 is provided at the bottom of the mixing cup 11. The main unit 20 includes a housing 21 and an electromagnetic drive device 30 installed in the housing 21 to drive the transmission disk 13 in a non-contact manner. Figure 2 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 top of the stator body 31. Figure 2-4 As shown, multiple stator teeth 32 are arranged at intervals around the central hole of the stator body 31, forming a first channel 33 between adjacent stator teeth 32 that communicates with the outside. Multiple stator teeth 32 form a hollow hole that communicates with the first channel 33 and passes through it axially. The hollow hole communicates with the central hole to form a second channel 34 that communicates with the outside. A fan 42 is provided inside the housing 21 to drive airflow along the first channel 33 and the second channel 34. The top surfaces of multiple stator teeth 32 are close to the lower surface of the top wall of the housing 21, and the heating plate 17 is attached to the upper surface of the top wall of the housing 21.

[0046] In the food processing machine provided in this embodiment, the electromagnetic drive device 30 includes a ring-shaped stator body 31 and a plurality of stator teeth 32 with coils wound around them protruding from the top of the stator body 31. The stator body 31 and the stator teeth 32 define a first channel 33 and a second channel 34. That is, the structure of the electromagnetic drive device 30 itself enables it to have a first channel 33 and a second channel 34 for airflow and heat dissipation.

[0047] This embodiment uses the first channel 33 as the air inlet channel and the second channel 34 as the air outlet channel as an example to illustrate the effect. Figure 2 ,3 In section 4, the arrows indicate the airflow direction: When the fan 42 is working, since the top surfaces of the multiple stator teeth 32 are close to the lower surface of the top wall of the housing 21, the airflow exchanges heat with the top wall of the housing 21 during its flow in the first channel 33, carrying away the heat from the housing 21. Since the heating plate 17 is attached to the upper surface of the top wall of the housing 21, the airflow indirectly exchanges heat with the heating plate 17 while dissipating heat from the housing 21. The airflow after the exchange through the first channel 33 is then discharged through the second channel 34, thereby carrying away the heat from the housing 21 and the heating plate 17, achieving further heat dissipation of the housing 21 and the area of ​​the heating plate 17 near the transmission disk 13. Even if magnetic eddy currents are formed between the transmission disk 13 and the electromagnetic drive device 30, the airflow in the first channel 33 and the second channel 34 achieves good heat dissipation of the heating plate 17, especially in this area, thereby avoiding local high temperatures in this area and preventing the bottom from burning.

[0048] Of course, if the fan 42 reverses the airflow direction, causing it to enter through the second channel 34 and exit through the first channel 33, the above-mentioned effect can still be achieved. Specifically, when the airflow enters the second channel 34 and flows axially to the top wall of the casing, it then continues to flow radially along the second channel through the top wall of the casing, thereby dissipating heat from the top wall of the casing and indirectly carrying away the heat from the heating plate.

[0049] Furthermore, a first channel 33 connecting to the outside is formed between adjacent stator teeth 32. Multiple stator teeth 32 form a hollow hole that connects to the first channel 33 and extends axially. This hollow hole connects to the central hole, forming a second channel 34 connecting to the outside. Therefore, the first channel 33 and the second channel 34 achieve good heat dissipation in the central area of ​​the electromagnetic drive device 30. Compared to traditional heat dissipation methods where airflow only passes through the device surface, this method offers better heat dissipation and higher efficiency. Moreover, the top surfaces of multiple stator teeth 32 are close to the lower surface of the top wall of the housing 21, and the heating plate 17 is attached to the upper surface of the top wall of the housing 21. This ensures that the transmission disk 13 and the electromagnetic drive device 30 remain within a preset transmission dimension range, guaranteeing reliable power transmission even during mass production applications of food processing machines. This facilitates the commercial application and promotion of non-contact magnetic transmission technology.

[0050] It should be noted that the top surfaces of the multiple stator teeth 32 of this utility model are close to the lower surface of the top wall of the housing 21. This means that there is a small gap between the stator teeth and the top wall of the housing. In a preferred embodiment, the distance S between the stator teeth 32 and the top wall of the housing 21 is ≤1mm.

[0051] If the distance S between the stator tooth 32 and the top wall of the housing 21 is ≤1mm, the stator tooth 32 and the top wall of the housing 21 will be close together, avoiding the formation of an excessive gap between them. For example, if the gap is greater than 1mm, the airflow will escape into the gap between them when it flows through the first channel 33, causing disordered airflow interference and affecting the airflow circulation rate. By setting a reasonable distance S, and S≤1mm, the cold airflow can be diffused appropriately between the stator tooth 32 and the top wall of the housing 21, which will increase the heat exchange area between the cold airflow and the housing 21 to a certain extent and achieve efficient heat dissipation.

[0052] Of course, when S=0, the stator tooth pole 32 is attached to the lower surface of the top wall of the housing 21, and the airflow in the different first channels 33 can flow along the first channel 33 in an orderly manner, and then directly contact the top wall of the housing 21, efficiently carrying away the heat of the top wall of the housing 21 and indirectly carrying away the heat of the heating plate 17, preventing the heating plate 17 from having local high temperature and burning phenomenon.

[0053] like Figure 2 , 3 As shown in Figure 4, the stator tooth pole 32 is attached to the lower surface of the top wall of the housing 21, and the fan 42 is coaxially arranged below the second channel 34, drawing the airflow of the second channel 34 downward.

[0054] By attaching the stator teeth 32 to the lower surface of the top wall of the housing 21, gaps are avoided between the stator teeth 32 and the housing 21, preventing disordered airflow. Therefore, when airflow passes through the first channel 33 between adjacent stator teeth 32, the airflow in different first channels 33 can flow orderly along the first channel 33 and directly contact the top wall of the housing 21, efficiently removing heat from the top wall of the housing 21 and indirectly removing heat from the heating plate 17. By coaxially arranging the fan 42 below the second channel 34 and drawing the airflow downwards from the second channel 34, the airflow entering the second channel 34 from the first channel 33 can be drawn out more fully, preventing the hot airflow that has already undergone heat exchange from staying in the second channel 34 and the first channel 33 for too long, thus accelerating the airflow speed and improving heat dissipation efficiency. Meanwhile, by using the fan 42 to draw the airflow downward through the second channel 34, the cold airflow enters radially along multiple first channels 33, and the hot airflow after heat exchange is concentrated and discharged axially along the second channel 34, which enhances the heat dissipation airflow. At the same time, the hot airflow can be concentrated and discharged, preventing the hot airflow from escaping and spreading into the casing 21 and re-entering the first channel 33, thus affecting the heat dissipation effect, and preventing the hot airflow from affecting other components inside the casing 21.

[0055] like Figure 2As shown, in a preferred embodiment, the housing 21 has an air inlet 213 communicating with the first channel 33 and an air outlet 214 communicating with the second channel 34. The housing 21 has a mounting cavity for mounting the control board 50, which is connected between the air inlet 213 and the first channel 33.

[0056] The fan 42 drives airflow along the direction of the air inlet 213, the first channel 33, the second channel 34, and the air outlet 214, forming a circulating cooling airflow to achieve circulating heat dissipation for the electromagnetic drive device 30, the top wall of the casing 21, and the heating plate 17. By connecting the mounting cavity between the air inlet 213 and the first channel 33, the airflow entering from the air inlet 213 can also dissipate heat for the control board 50, achieving a good overall heat dissipation effect for the host 20.

[0057] like Figure 1-4 As shown, in a preferred embodiment, the housing 21 has an air outlet 214, and the housing 21 also has an air guide shroud 41. The air guide shroud 41 is connected between the second channel 34 and the air outlet 214, and the fan 42 is housed in the air guide shroud 41.

[0058] 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 houses the fan 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 214, and the second cover 412 gradually expands toward the air outlet 214.

[0059] The air guide shroud 41 connects between the second channel 34 and the air outlet 214, which serves to gather and guide the hot airflow, allowing the hot airflow to flow along the air guide shroud 41 to the air outlet 214 to be discharged from the housing 21. This prevents the hot airflow from escaping and spreading into the housing 21 and re-entering the air intake channel, thus affecting the heat dissipation effect, and also prevents the hot airflow from affecting other components inside the housing 21.

[0060] like Figure 5 As shown, the fan 42 assembly has a stud 413 on its air guide cover 41. The stud 413 is fixed to the housing 21 by screws to achieve the installation of the air guide cover 41. The fan 42 is installed inside the air guide cover 41.

[0061] like Figure 3 As shown, in a preferred embodiment, the electromagnetic drive device 30 further includes an annular mounting bracket 60 fixed to the bottom end of the stator body 31. The mounting bracket 60 is fixed to the housing 21, and the mounting bracket 60 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 a second channel 34. In a specific embodiment of this invention, the fan 42 is fixedly mounted on the mounting bracket 60.

[0062] The stator body 31 is mounted by means of a ring-shaped mounting bracket 60, which is fixed to the housing 21. The installation is stable, reliable, and simple. The mounting bracket 60 has a connecting hole corresponding to the center hole. Therefore, the ring shape of the mounting bracket 60 does not obstruct the heat dissipation airflow and does not affect the heat dissipation of the stator body 31, stator teeth 32, and coils. The hollow hole, the center hole, and the connecting hole form an air outlet channel, which also achieves the heat dissipation effect of airflow through the air outlet channel on the mounting bracket 60, thus achieving efficient heat dissipation of the entire electromagnetic drive device 30. By fixing the fan 42 to the mounting bracket 60, a modular assembly is achieved. The mounting bracket 60 integrates functions, reduces the number of parts in the main unit 20, simplifies the structure of the main unit 20, and facilitates the proximity of the fan 42 to the stator body 31, reducing airflow loss and enhancing heat dissipation efficiency.

[0063] like Figure 7 , 8 As shown, in a preferred embodiment, the housing 21 includes a shell 23 with an opening at the top and a top cover 24 encapsulated at the opening. Preferably, the shell 23 has an opening at the bottom and is encapsulated by a bottom cover 25. The top cover 24 is adhered and fixed to the upper end face of the stator tooth pole 32. The stator body 31 is suspended and fixed to the shell 23 by a mounting bracket 60, which seals and presses the top cover 24 against the edge of the opening. The heating plate 17 is attached to the top cover 24. Optionally, a sealing ring 26 is clamped between the shell 23 and the top cover 24 to achieve a sealed installation.

[0064] By dividing the housing 21 into a shell 23 and a top cover 24, the top cover 24 is set independently of the shell 23. At the same time, the top cover 24 is glued and fixed to the upper end face of the stator tooth pole 32 to achieve a tight fit. There will be no errors caused by assembly in the area above the stator tooth pole 32, resulting in high installation accuracy. Furthermore, when the top cover 24 is fixed to the shell 23, the heating plate 17 is attached to the top cover 24, which can ensure that the transmission disk 13 and the stator tooth pole 32 of the electromagnetic drive device 30 are always kept within the preset transmission size range, thus achieving reliable transmission.

[0065] This utility model does not limit the assembly method of the electromagnetic drive device, and combines... Figure 3 , 6 As shown in Figure 7, 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. Specifically, the top of the housing 21 has a downwardly extending mounting post 211 on the housing 23, and the mounting lugs 601 are fixedly connected to the mounting post 211.

[0066] By using the mounting bracket 60 and fixing it to the mounting post 211 with the mounting lug 601 of the mounting bracket 60, the electromagnetic drive device 30 can be hoisted, reducing the installation tolerance between the stator teeth 32 and the top wall of the housing 21. This allows the stator teeth 32 to be closer to the top wall of the housing 21, reducing the axial distance between the stator teeth 32 and the transmission disk 13, thus achieving reliable and efficient transmission. At the same time, the combination of the ring frame and the mounting lug 601 will not obstruct the flow path of heat dissipation airflow, achieving efficient heat dissipation in the central area of ​​the electromagnetic drive device 30.

[0067] like Figure 7 As shown, in a preferred embodiment, the top cover 24 arches upward to protrude from the opening to support the heating plate 17. A flange 241 is provided at the lower edge of the top cover 24. The flange 241 is pressed against the edge of the opening, and a sealing ring 26 is clamped between the flange 241 and the edge of the opening.

[0068] The top cover 24 arches upwards from bottom to top to support the heating plate 17 through the opening, which facilitates a tight fit between the top cover 24 and the heating plate 17 and provides effective support for the heating plate 17. A flange 241 is provided on the lower edge of the top cover 24, and a sealing ring 26 is clamped between the flange 241 and the edge of the opening. On the one hand, the top cover 24 and the housing 23 are sealed together to prevent water from entering the housing 21. On the other hand, the sealing ring 26 absorbs assembly tolerances, which can ensure that the top cover 24 and the stator tooth pole 32 are reliably fitted together, and also ensure that the top cover 24 and the housing 23, and the electromagnetic drive device 30 and the housing 23 are reliably fixed.

[0069] like Figure 7 As shown, in a preferred embodiment, the top wall of the housing 21 includes a top cover 24, the top cover 24 includes a supporting top plate 242 that fits against the heating plate 17 and a recessed platform 243 that sinks from the edge of the supporting top plate 242, the top surface of the stator tooth pole 32 is close to the supporting top plate 242, and the recessed platform 243 has a drain port that communicates with the outside.

[0070] To connect the drain outlet with the outside, a water outlet can be opened on the bottom wall of the casing, and a drainage channel can be set between the drain outlet and the water outlet.

[0071] By having the top surface of the stator tooth pole 32 close to the support top plate 242 when it is attached to the heating plate 17, airflow through the first channel 33 and the second channel 34 can achieve good heat dissipation for the support top plate 242 and the heating plate 17. At the same time, by setting a recessed platform 243 that sinks from the edge of the support top plate 242 and having a drain outlet on the platform 243, the accumulation of water stains carried by the mixing cup 11 after washing is avoided on the top of the casing 21 when there is overflow or cleaning. This saves the user the trouble of cleaning and also prevents water from accumulating on the support top plate 242, which would affect the heat dissipation effect of the high-temperature area of ​​the heating plate 17 facing the transmission disk 13.

[0072] In one embodiment, this utility model also provides a food processing machine, including a main unit 20, a stirring cup 11 installed in the main unit 20, a stirring blade 12 located in the stirring cup 11, and a transmission disk 13 connected to the stirring blade 12. The main unit 20 includes a housing 21 and an electromagnetic drive device 30 installed in the housing 21 to drive the transmission disk 13 in the air. The electromagnetic drive device 30 includes a ring-shaped stator body 31 and a plurality of stator teeth 32 with coils wound on the top of the stator body 31. The plurality of stator teeth 32 are arranged at intervals around the central hole of the stator body 31, forming a first channel 33 communicating with the outside between adjacent stator teeth 32. The plurality of stator teeth 32 form a hollow hole communicating with the first channel 33 and penetrating along the axial direction. The hollow hole communicates with the central hole to form a second channel 34 communicating with the outside.

[0073] In this embodiment, the stirring cup 11 can be detachably or fixedly installed with the main unit 20; in this embodiment, the transmission disk 13 is located inside the stirring cup 11; or the transmission disk 13 is located below the stirring cup 11, and the transmission disk 13 is connected to the stirring blade 12 through the transmission shaft 15, which passes through the bottom wall (or heating plate 17) of the stirring cup 11. In this embodiment, the stator body and the mounting bracket are coaxially arranged; more preferably, the stator body, the mounting bracket, and the fan are coaxially arranged.

[0074] In a preferred embodiment of this invention, the assembly of the electromagnetic drive device 30 and the host 20 can be selected as follows:

[0075] Reference Figure 3 , 6 7. The electromagnetic drive device 30 also includes an annular mounting bracket 60 fixed to the stator body 31, and the mounting bracket 60 is fixed to the housing 21.

[0076] Reference Figure 3 As shown, 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, as... Figure 6As shown, the housing 21 is provided with a mounting part, and the mounting lug 601 is fixedly connected to the mounting part. Specifically, the mounting part is a mounting post 211 extending from the top wall of the housing 21 toward the mounting lug 601. Mounting holes are provided in the mounting lug 601, and screws are passed through the mounting holes and locked to the mounting post 211 to achieve the hoisting of the electromagnetic drive device 30. This allows the stator teeth 32 to fit against the top wall of the housing 21.

[0077] In this embodiment, the mounting bracket 60 is fixed to the top surface of the stator body 31, or the mounting bracket 60 is fixed to the bottom surface of the stator body 31, or the mounting bracket 60 is sleeved and fixed to the outer periphery of the stator body 31, such as by interference fit. The mounting bracket 60 and the stator body 31 can also be fixed by adhesive.

[0078] When the mounting bracket 60 is fixed on the top or bottom surface of the stator body 31, the mounting bracket 60 is provided with a connecting hole, and the hollow hole and the center hole are connected to the connecting hole to form a second channel 34.

[0079] Of course, in other embodiments of this implementation, the mounting part may also be a mounting post 211 extending from the bottom wall of the housing 21 toward the mounting lug 601.

[0080] The food processing machine provided in this embodiment simplifies the installation and positioning of the electromagnetic drive device 30, thereby simplifying the internal space of the main unit 20. The main unit 20 has a large space and sufficient heat dissipation space, which is conducive to the overall heat dissipation of the main unit and simplifies the air duct and heat dissipation requirements in the main unit 20.

[0081] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0082] 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.

[0083] 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, a mixing cup detachably mounted on the main unit, and a blade assembly detachably mounted inside the mixing cup, the blade assembly comprising a mixing blade, a transmission disk connected to the mixing blade, and a blade holder fitted around the outer periphery of the transmission disk; a heating plate is provided at the bottom of the mixing cup; the main unit comprises a housing and an electromagnetic drive device installed in the housing to drive the transmission disk in a non-contact manner, characterized in that, The electromagnetic drive device includes a ring-shaped stator body and multiple stator teeth with coils wound around the top of the stator body. The multiple stator teeth are arranged at intervals around the central hole of the stator body, forming a first channel communicating with the outside between adjacent stator teeth. The multiple stator teeth form a hollow hole communicating with the first channel and penetrating axially. The hollow hole communicates with the central hole to form a second channel communicating with the outside. A fan is provided inside the housing to drive airflow along the first and second channels. The top surfaces of the multiple stator teeth are close to the lower surface of the top wall of the housing, and the heating plate is attached to the upper surface of the top wall of the housing.

2. The food processing machine according to claim 1, characterized in that, The stator teeth are attached to the lower surface of the top wall of the housing, and the fan is coaxially arranged below the second channel, drawing the airflow of the second channel downwards.

3. A food processing machine according to claim 2, characterized in that, The housing has an air outlet, and the housing also has an air guide shroud. The air guide shroud is connected between the second channel and the air outlet, and the fan is housed in the air guide shroud.

4. A food processing machine according to claim 1, characterized in that, The electromagnetic drive device further includes an annular mounting bracket fixed to the bottom end 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 second channel.

5. A food processing machine according to claim 1, characterized in that, The housing includes a shell with an opening at the top and a top cover encapsulated at the opening. The top cover is pasted and fixed to the upper end face of the stator tooth pole. The stator body is hoisted and fixed to the shell by a mounting bracket, and the top cover is sealed and pressed tightly against the edge of the opening. The heating plate is attached to the top cover.

6. A food processing machine according to claim 4 or 5, characterized in that, 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 of the housing is provided with a downwardly extending mounting post, and the mounting lugs are fixedly connected to the mounting post.

7. A food processing machine according to claim 5, characterized in that, The top cover arches upwards to protrude from the opening and support the heating plate. A flange is provided at the lower edge of the top cover, and the flange is pressed against the edge of the opening. A sealing ring is held between the flange and the edge of the opening.

8. A food processing machine according to claim 1, characterized in that, The distance S between the stator tooth pole and the top wall of the housing is ≤1mm.

9. A food processing machine according to claim 1, characterized in that, The housing has an air inlet communicating with a first channel and an air outlet communicating with a second channel. The housing has a mounting cavity for mounting a control board, and the mounting cavity is connected between the air inlet and the first channel.

10. A food processing machine according to claim 1, characterized in that, The top wall of the housing includes a supporting top plate that fits against the heating plate and a recessed platform that sinks from the edge of the supporting top plate. The top surface of the stator tooth pole is close to the supporting top plate, and the recessed platform has a drain outlet that communicates with the outside.

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