Food processor

Abstract

The utility model belongs to the technical field of kitchen appliances, and discloses a food processor which comprises a stirring cup and a cutter assembly detachably installed in the stirring cup. A mounting cavity is defined by the upper shell and the lower shell, the shaft sleeve is mounted in the mounting cavity, the bearing is mounted in the shaft sleeve, the transmission shaft penetrates through the bearing, the driven magnetic disc is located in the mounting cavity and connected to the lower end of the transmission shaft, and the upper end of the transmission shaft penetrates out of the upper shell and is connected with a blade. The shaft sleeve comprises a main body surrounding the periphery of the driven magnetic disc, and the upper end and the lower end of the main body abut against the upper shell and the lower shell correspondingly so that the installation cavity can be divided into a first cavity for containing the driven magnetic disc and a second cavity located on the periphery of the first cavity. According to the invention, the buzz generated by the driven magnetic disk in the working process of the food processor is reduced, the working noise of the whole machine is reduced, and the use experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to kitchen appliance technical field, concretely relates to a food processor. BACKGROUND

[0002] The existing food processor utilizes the high-speed rotation of the crushing blade to crush food materials, provides the user with a soybean milk beverage rich in nutrients, and is widely welcomed by users. However, the food processor has too much working noise during operation, which has been a research and development pain point in the industry. Therefore, the technical personnel in the field are continuously researching how to reduce the working noise of the food processor.

[0003] The noise sources of the existing food processor mostly come from the transmission noise of the connecting head between the motor shaft and the crushing blade, the collision noise of the crushing blade and the food materials, the operation noise of the motor itself, and the wind noise caused by the heat dissipation fan of the motor. Based on the above-mentioned multiple noise sources, the existing technical personnel also have corresponding technical improvements to solve the noise problem, such as adopting a magnetic drive knife assembly to solve the transmission noise of the connecting head, using a soundproof cover to solve the collision noise of the crushing blade and the food materials, and using soundproof cotton for the motor to solve the motor noise, etc.

[0004] However, for the food processor using the magnetic drive knife assembly, the knife assembly includes a knife seat with a mounting cavity, a blade located above the knife seat, a driven magnetic disk and a shaft sleeve installed in the knife seat, a bearing installed in the shaft sleeve, a transmission shaft passing through the bearing, an upper wall of the knife seat is provided with a shaft hole for the transmission shaft to extend out, the transmission shaft connects the blade and the driven magnetic disk, the driving magnetic disk of the main machine drives the driven magnetic disk to rotate, the driven magnetic disk drives the transmission shaft and the blade to rotate, and the crushing is realized. Most technical personnel believe that the above-mentioned technology has broken through the traditional mechanical connection transmission and solved the contact noise at the connecting head. Therefore, the technical personnel will shift their research direction to the crushing blade or the motor noise reduction, and will not further research and conquer other noises of the knife assembly. It is also more difficult to find other noises caused by the magnetic drive knife assembly.

[0005] The applicant has further researched the magnetic-driven knife assembly in order to further improve the transmission noise of the food processor, and has further found that the magnetic-driven knife assembly will bring certain transmission noise even without the collision noise caused by the mechanical connection, such as the high-speed rotating driven magnetic disk agitating the airflow in the installation cavity to form vortex or turbulent flow, or the driven magnetic disk will produce unbalanced centrifugal force when rotating due to the machining error and the installation error of the transmission shaft, resulting in vibration, or the driven magnetic disk and the transmission shaft will produce collision noise at the connection position, in short, the rotation of the driven magnetic disk will produce low-frequency humming sound, and the existing knife assembly structure cannot process the noise of the driven magnetic disk, and the rotation noise of the driven magnetic disk is directly transmitted outward through the knife seat and the stirring cup.

[0006] In addition, in the crushing scene of the food processor, the collision between the blade and the material will produce high-frequency crushing noise, therefore, during the working process of the food processor, the crushing noise will be mixed with the rotation noise of the driven magnetic disk, causing the working noise of the whole machine to be extremely large, affecting the user experience. Practical new type content

[0007] The utility model provides a kind of food processor, based on the knife assembly of magnetic drive in air, on the basis of solving the transmission noise of the mechanical collision of the transmission of traditional knife assembly through connector, continue to solve the transmission noise of magnetic-driven knife assembly, especially solve the noise produced by the rotation of driven magnetic disk will be directly transmitted outward technical problem.

[0008] The technical scheme adopted by the utility model is as follows:

[0009] The utility model provides a kind of food processor, including stirring cup, detachably installed in the knife assembly of stirring cup, the knife assembly includes the upper shell and lower shell of installation cavity formed by enclosing, the shaft sleeve installed in installation cavity, bearing installed in shaft sleeve, transmission shaft is passed in bearing, driven magnetic disk is located in installation cavity and is connected in the lower end of transmission shaft, the upper end of transmission shaft passes out the upper shell and is connected with blade, the shaft sleeve includes the main body around the outer periphery of driven magnetic disk, the upper end and the lower end of the main body are abutted on the upper shell and the lower shell respectively, to separate the installation cavity into the first chamber containing driven magnetic disk and the second chamber located in the outer periphery of first chamber.

[0010] The utility model provides a kind of food processing machine, by being provided with the main part around the driven magnetic disk outer periphery in shaft sleeve, simultaneously, the upper end and lower end of main part are respectively abutted on the upper shell and the lower shell, so that the installation cavity is separated into the first chamber for accommodating the driven magnetic disk and the second chamber located in the outer periphery of first chamber, therefore, when driven magnetic disk rotates, the rotation noise of driven magnetic disk directly occurs in first chamber, and rotation noise needs to be transmitted to outside by inside-out through first chamber, main part, second chamber, tool holder, stirring cup, when noise propagates in first chamber and second chamber, sound wave can be refracted and cancelled in first chamber and second chamber, to realize the weakening of sound wave energy, realize the purpose of noise reduction;Simultaneously, main part, tool holder, stirring cup also form multiple barriers to noise, block sound transmission outward.Therefore, the hum emitted by driven magnetic disk in the working process of food processing machine is reduced, the working noise of whole machine is reduced, and the use experience of user is improved.

[0011] In a preferred embodiment, the bottom of the stirring cup includes a sink and a mounting portion connected above the sink, the upper shell and the lower shell are sunk into the sink, and the outer side wall of the mounting portion is provided with a heating pipe.

[0012] Because of the existing magnetic drive knife assembly, after being installed in the stirring cup, the heat of the heating pipe is directly transmitted to the driven magnetic disk, causing the magnetic attraction of the permanent magnet in the driven magnetic disk to weaken, resulting in the technical problems of reduced transmission reliability and poor synchronization between the driven magnetic disk and the driving device. Therefore, to synchronously solve the technical problems that the noise generated by the rotation of the driven magnetic disk is directly transmitted outward and the heat in the heating process affects the driven magnetic disk, causing the magnetic attraction of the permanent magnet in the driven magnetic disk to weaken, in a preferred embodiment, a sink and a mounting portion are arranged at the bottom of the stirring cup, the tool holder, i.e., the upper shell and the lower shell, are sunk into the sink, accurate installation of the tool holder is realized, and the heating pipe is located on the outer side wall of the mounting portion. Therefore, the heat of the heating pipe can be directly transmitted to the crushing cavity surrounded by the upper shell and the stirring cup, the loss of heat due to the blocking of the tool holder is reduced, and the thermal efficiency is high. At the same time, since the heating pipe is arranged on the outer side wall of the mounting portion, the heating pipe and the driven magnetic disk are height-dislocated, the heat radiation effect of the heating pipe on the driven magnetic disk is reduced, even if a part of the heat of the heating pipe is transmitted to the sink, the heat needs to pass through the second chamber and the first chamber from outside to inside through the repeated barriers of the second chamber and the first chamber, the heat transmitted to the driven magnetic disk is weakened, the demagnetization of the driven magnetic disk is avoided, the driven magnetic disk is protected, and the sensitive and reliable transmission of the driven magnetic disk is improved.

[0013] In a preferred embodiment, the outer cavity wall of the second chamber is radially limited by the sink, the upper surface of the upper shell and the mounting portion form a heating cavity, and the heating pipe heats the heating cavity.

[0014] By utilizing the radial limiting effect of the outer wall of the second chamber and the settling tank, a reliable limiting mechanism is formed between the blade holder of the blade assembly and the stirring cup, restricting the blade holder from wobbling during blade rotation and further reducing resonance noise. Simultaneously, due to the radial limiting effect of the outer wall of the second chamber and the settling tank, the pulverizing chamber is effectively formed above the upper shell of the blade holder, elevating the material and increasing the probability of collision between the material and the blade within the pulverizing chamber, thus improving pulverizing efficiency. Furthermore, the upper surface of the upper shell and the mounting portion enclose a heating chamber, which is heated by the heating tube, further reducing heat radiation from the heating tube to the driven disk, preventing demagnetization of the driven disk, and ensuring reliable transmission of the driven disk.

[0015] In a preferred embodiment, the upper end of the main body is recessed downward to form an annular groove, and the groove and the upper shell enclose to form a third chamber.

[0016] By setting a groove at the upper end of the main body to form a third chamber with the upper shell, the rotational noise of the driven disk needs to pass through multiple silencing chambers (first, third, and second) on the path of transmission outward, thus improving the noise reduction effect. At the same time, the heat from the heating tube needs to pass through multiple barriers (second, third, and first chambers) on the path of transmission inward, thus improving the heat isolation and protection of the driven disk, thereby enhancing the sensitive and reliable transmission of the driven disk.

[0017] In a preferred embodiment, the body includes a surrounding wall around the outer periphery of the driven disk and a reinforcing wall connected to the bottom end of the surrounding wall and located on the outer periphery of the surrounding wall. The inner side of the surrounding wall defines the first chamber, and the surrounding wall and the reinforcing wall define the third chamber. The surrounding wall is inclined outward from top to bottom.

[0018] The main body defines the first and third chambers by setting up enclosures and reinforcing walls. The structure is simple and lightweight, which can reduce the overall weight of the blade assembly and make it easier for users to handle. By setting the enclosures to slope outward from top to bottom, the driven disk can be reasonably accommodated in the first chamber, while the third chamber has enough space, achieving a compact structure and improving the heat insulation and noise reduction effect of the third chamber.

[0019] In a preferred embodiment, the lower end of the main body is recessed upward to form a mounting groove, a magnet is disposed in the mounting groove, and an attractive member that cooperates with the magnet is disposed on the outer side of the bottom wall of the stirring cup.

[0020] By setting a mounting slot to reliably limit the magnet's position, and installing a magnetic suction device on the outer bottom wall of the mixing cup, the attraction between the magnetic device and the magnet achieves axial restraint between the blade assembly and the mixing cup. This prevents severe axial runout of the blade assembly during operation, thus reducing noise and reducing operating noise. It also prevents the blade assembly from detaching from the mixing cup and falling during the user's pouring process after processing, thus avoiding impact damage. Therefore, it improves the axial restraint between the blade assembly and the mixing cup, enhancing the user experience. The magnetic suction device can be a magnet block or an iron block.

[0021] In a preferred embodiment, the lower end of the main body is recessed upward to form a mounting groove, a magnet is disposed within the mounting groove, and a detection device is disposed on the outer bottom of the stirring cup to detect the position of the magnet in conjunction with the magnet. The detection device may be, for example, a reed switch or a Hall element.

[0022] By using a detection device and a magnet, the position of the tool holder can be detected, thereby identifying whether the tool holder is installed or whether it is installed flat and in place, avoiding program errors caused by missing or improperly installed tool holders, making the system more intelligent.

[0023] In a preferred embodiment, a magnetic shielding ring, which is a metal that isolates the magnet from the driven disk, is also installed in the mounting slot.

[0024] The isolation effect of the magnetic isolation ring reduces magnetic field interference between the magnet and the driven disk, preventing the formation of a closed loop of magnetic lines of force between the driven disk and the magnet. This ensures that the driven disk can form a closed loop with the drive device, achieving effective and sensitive transmission. Sufficient magnetic lines of force also form a closed loop between the magnet used for engagement and the engagement component, strengthening the magnetic force between them and ensuring reliable engagement. This not only achieves reliable positioning between the blade assembly and the mixing cup but also guarantees effective and sensitive transmission of the driven disk, enabling reliable rotation of the blade assembly.

[0025] In a preferred embodiment, the lower housing has an upwardly extending lower ring wall on its side, and the upper housing has a downwardly extending upper ring wall on its side. The lower ring wall and the upper ring wall are fitted together and fixedly connected.

[0026] Since the upper and lower ends of the main body abut against the upper and lower housings respectively, the upper and lower housings clamp the main body of the bushing. During the assembly of the tool assembly, the upper housing relies on the upper end of the main body of the bushing for axial positioning, and the lower housing relies on the lower end of the bushing for axial positioning. This achieves the limiting and fixing installation of the upper housing, bushing, and lower housing, thereby using the bushing as a unified positioning reference to assemble the tool assembly. The abutment between the bushing and the lower housing directly determines the clearance between the driven disk and the lower housing, thereby reducing the axial fit dimension chain of the tool assembly and enabling more direct and precise control over the clearance formed between the bottom surface of the lower housing and the driven disk. By employing an upwardly extending lower annular wall on the side of the lower housing and a downwardly extending upper annular wall on the side of the upper housing, the lower annular wall and the upper annular wall are fitted together and fixedly connected, forming a nested structure instead of abutting fit between the end faces of the upper and lower housings. After the upper and lower housings clamp the bushing and are fixedly connected, the nested structure formed by the upper and lower annular walls offsets the axial fit tolerance between the upper and lower housings, further avoiding the stacking of axial tolerances of the tool assembly. Therefore, precise assembly of the tool assembly is achieved, improving installation accuracy, and allowing the clearance between the lower housing and the bottom surface of the driven disk to be precisely controlled as required. This achieves rotational clearance between the driven disk and the lower housing, ensuring smooth rotation of the driven disk, and ultimately reducing the distance between the driven disk and the drive device, such as the drive disk, improving the effectiveness and reliability of the transmission. Therefore, this embodiment can ensure that the driven disk and the drive device are always kept within the preset transmission size range, and can also ensure reliable power transmission when the food processing machine is mass-produced and applied, thereby enabling the commercial application and promotion of non-contact magnetic transmission.

[0027] In a preferred embodiment, a guide slope is provided at the top of the lower ring wall to engage with the upper ring wall; by providing the guide slope, a guide is formed for the nesting engagement of the upper and lower ring walls, thereby facilitating assembly and alignment, reducing installation effort, and enabling quick engagement of the upper and lower ring walls, so as to further fix the upper and lower ring walls and improve assembly efficiency.

[0028] In a preferred embodiment, the top of the lower ring wall is inserted into the inner side of the upper ring wall, and the lower ring wall is welded to the upper ring wall. By inserting the top of the lower ring wall into the inner side of the upper ring wall, the upper shell wraps around the top of the lower shell, allowing the mating seam to face downwards, facilitating a tight seal between the upper and lower shells. Furthermore, the welding method between the lower and upper ring walls simplifies assembly and ensures reliable fixation. 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 cross-sectional structural diagram of a food processing machine according to one embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram illustrating the cooperation between the stirring cup and the blade assembly in one embodiment of the present invention;

[0032] Figure 3 This is a cross-sectional structural diagram of the blade assembly in one embodiment of the present invention;

[0033] Figure 4 This is an exploded structural diagram of the blade assembly in one embodiment of the present invention;

[0034] Figure 5 This is a bottom view of a partial structure of the blade assembly in one embodiment of the present invention;

[0035] Figure 6 This is a cross-sectional structural diagram of the blade assembly in another embodiment of the present invention.

[0036] List of components and reference numerals:

[0037] 10. Stirring cup; 11. Settling tank; 12. Mounting part; 13. Heating tube; 20. Blade assembly; 21. Blade holder; 211. Upper shell; 212. Lower shell; 213. First chamber; 214. Second chamber; 215. Third chamber; 22. Blade; 23. Driven disk; 24. Bushing; 241. Main body; 242. Cylinder; 243. Enclosure wall; 244. Reinforcing wall; 25. Bearing; 26. Drive shaft; 27. Shaft seal; 28. Magnet; 29. ​​Magnetic shielding ring; 30. Main unit; 40. Drive unit; 41. Motor; 42. Drive disk; 50. Suction element. 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 Figures 1-5 As shown, this utility model provides a food processing machine, including a mixing cup 10 and a blade assembly 20 detachably installed inside the mixing cup 10, combined with... Figure 3 , 4As shown in Figure 5, the blade assembly 20 includes an upper housing 211 and a lower housing 212 that enclose and form a mounting cavity, a bushing 24 installed in the mounting cavity, a bearing 25 installed in the bushing 24, a shaft seal 27, a drive shaft 26 that passes through the bearing 25, and a driven disk 23 located in the mounting cavity and connected to the lower end of the drive shaft 26. The upper end of the drive shaft 26 extends out of the upper housing 211 and is connected to a blade 22. The bushing 24 includes a cylindrical body 242 that accommodates the bearing 25 and the shaft seal 27, and a main body 241 connected below the cylindrical body 242 and surrounding the outer periphery of the driven disk 23. The upper and lower ends of the main body 241 abut against the upper housing 211 and the lower housing 212, respectively, to divide the mounting cavity into a first chamber 213 that accommodates the driven disk 23 and a second chamber 214 located on the outer periphery of the first chamber 213.

[0044] This invention provides a food processing machine. A main body 241 surrounds the driven disk 23 via a bushing 24. The upper and lower ends of the main body 241 abut against the upper housing 211 and lower housing 212, respectively. This divides the mounting cavity into a first chamber 213 for accommodating the driven disk 23 and a second chamber 214 located around the first chamber 213. Therefore, when the driven disk 23 rotates, the rotational noise occurs directly within the first chamber 213. The noise needs to be transmitted from the inside out through the first chamber 213, the main body 241, the second chamber 214, the blade holder 21, and the stirring cup 10. When the noise propagates within the first and second chambers 213 and 214, the sound waves are refracted and canceled out, thus weakening the sound wave energy and achieving noise reduction. Simultaneously, the main body 241, the blade holder 21, and the stirring cup 10 form multiple barriers against noise, preventing sound from being transmitted outwards. Therefore, the buzzing noise emitted by the driven disk 23 during the operation of the food processing machine is reduced, the overall operating noise of the machine is reduced, and the user experience is improved.

[0045] like Figure 1 As shown, preferably, the food processor also includes a main unit 30 that supports the mixing cup 10. The mixing cup 10 can be detachably installed on top of the main unit 30 or fixed on top of the main unit 30. The drive device 40 is installed inside the main unit 30.

[0046] It should be noted that this utility model does not limit the specific structure of the driving device 40. For example, in a preferred embodiment, such as... Figure 1 As shown, the drive device 40 includes a motor 41 and a drive disk 42 driven by the shaft of the motor 41. The drive disk 42 is located below the driven disk 23 and drives the driven disk 23 to rotate remotely.

[0047] Of course, in another preferred embodiment, the driving device 40 is an electromagnetic coil that generates a magnetic field after being energized, including a stator and a coil winding wound on the stator. The electromagnetic coil surrounds the outer periphery of the driven disk 23 and drives the driven disk 23 to rotate in the air.

[0048] Whether the drive device 40 uses a motor 41 and a drive disk 42 or a stator and coil windings, it can drive the driven disk 23 through changes in the magnetic field, thereby achieving effective rotation of the blade 22 and realizing the crushing and processing of food ingredients.

[0049] like Figure 2 As shown, in a preferred embodiment, the bottom of the stirring cup 10 includes a settling tank 11 and a mounting portion 12 connected above the settling tank 11. The upper shell 211 and the lower shell 212 are submerged in the settling tank 11, and a heating tube 13 is provided on the outer side wall of the mounting portion 12. More preferably, the outer wall of the second chamber 214 is radially limited to the settling tank 11.

[0050] Specifically, the stirring cup 10 includes a cup body and a heating plate fixed to the bottom of the cup body, and the settling tank 11 and the mounting part 12 connected above the settling tank 11 are located on the heating plate.

[0051] More preferably, the mounting portion 12 extends outward at an angle from bottom to top.

[0052] By setting a settling groove 11 and a mounting part 12 at the bottom of the mixing cup 10, the blade holder 21, namely the upper shell 211 and the lower shell 212, is submerged in the settling groove 11, thus achieving accurate installation of the blade holder 21. Furthermore, the heating tube 13 is located on the outer wall of the mounting part 12, rather than the outer wall of the settling groove 11. Therefore, the heat from the heating tube 13 can be directly transferred to the grinding chamber formed by the upper shell 211 and the mixing cup 10, reducing heat loss due to the blade holder 21 blocking the flow, resulting in high thermal efficiency. Meanwhile, since the heating tube 13 is located on the outer wall of the mounting part 12, the height of the heating tube 13 and the driven disk 23 is misaligned, which reduces the heat radiation effect of the heating tube 13 on the driven disk 23. Even if some of the heat from the heating tube 13 is transferred to the sink 11, by setting the first chamber 213 and the second chamber 214, the heat from the outside to the inside needs to pass through the multiple barriers of the second chamber 214 and the first chamber 213, which weakens the heat transferred to the driven disk 23, avoids the demagnetization of the driven disk 23, and achieves protection for the driven disk 23, thereby improving the sensitive and reliable transmission of the driven disk 23.

[0053] By using the outer wall of the second chamber 214 and the radial limiting of the settling tank 11, a reliable limiting is formed between the blade holder 21 of the blade assembly 20 and the stirring cup 10, which restricts the swaying of the blade holder 21 during the rotation of the blade 22 and further reduces resonance noise. At the same time, since the outer wall of the second chamber 214 and the settling tank 11 are radially limiting, it is equivalent to the crushing chamber being formed above the upper shell 211 of the blade holder 21, which raises the material, increases the probability of collision between the material in the crushing chamber and the blade 22, and improves the crushing efficiency.

[0054] This utility model does not limit the main structure of the bushing, such as Figure 3 , 4 As shown, in a preferred embodiment, the upper end of the main body 241 is recessed downward to form an annular groove, which, together with the upper housing 211, forms a third chamber 215. More specifically, the main body 241 includes a surrounding wall 243 surrounding the outer periphery of the driven disk 23 and a reinforcing wall 244 connected to the bottom end of the surrounding wall 243 and located on the outer periphery of the surrounding wall 243. The inner side of the surrounding wall 243 defines a first chamber 213, and the surrounding wall 243 and the reinforcing wall 244 define a third chamber 215. The surrounding wall 243 is inclined outward from top to bottom.

[0055] By setting a groove at the upper end of the main body 241 to form a third chamber 215 with the upper shell 211, the rotational noise of the driven disk 23 needs to pass through multiple silencing mechanisms, namely the first chamber 213, the third chamber 215, and the second chamber 214, to improve the noise reduction effect. At the same time, the heat from the heating tube 13 needs to pass through multiple barriers, namely the second chamber 214, the third chamber 215, and the first chamber 213, to improve the heat isolation and protection of the driven disk 23, thereby improving the sensitive and reliable transmission of the driven disk 23.

[0056] The main body 241 defines the first chamber 213 and the third chamber 215 by setting the enclosure wall 243 and the reinforcing wall 244. The structure is simple and lightweight, which can reduce the overall weight of the knife assembly 20 and make it easier for the user to handle. By setting the enclosure wall 243 outward from top to bottom, the driven disk 23 can be reasonably accommodated in the first chamber 213, while the third chamber 215 has enough space, achieving a compact structure and improving the heat insulation and noise reduction effect of the third chamber 215.

[0057] Of course, in another preferred embodiment, such as Figure 6 As shown, the main body 241 of the bushing 24 is a single-layer ring wall surrounding the driven disk 23. Based on this, the mounting cavity of the tool holder is divided into a first chamber 213 and a second chamber 214 by the ring wall.

[0058] like Figure 1 , 3As shown in Figure 4, in a preferred embodiment, the lower end of the main body 241 is recessed upward to form a mounting groove, a magnet 28 is disposed in the mounting groove, and an attractive member 50 that cooperates with the magnet 28 is disposed on the outer side of the bottom wall of the stirring cup 10.

[0059] The magnet 28 is reliably positioned by setting an installation groove. A magnetic suction device is installed on the outer side of the bottom wall of the mixing cup 10. The attraction between the magnetic suction device and the magnet 28 achieves axial positioning between the blade assembly 20 and the mixing cup 10, preventing severe axial runout and noise during the operation of the blade assembly 20, thus reducing operating noise. It also prevents the blade assembly 20 from detaching from the mixing cup 10 and falling during the user's pouring process after processing, thus avoiding impact damage. Therefore, the axial positioning between the blade assembly 20 and the mixing cup 10 is improved, enhancing the user experience. The magnetic suction device can be a single magnet 28 or an iron block.

[0060] Alternatively, in another preferred embodiment, the lower end of the main body 241 is recessed upward to form a mounting groove, and a magnet 28 is disposed in the mounting groove. A detection device is disposed on the outer bottom of the stirring cup 10 to cooperate with the magnet 28 and detect the position of the magnet 28. The detection device may be, for example, a reed switch or a Hall element.

[0061] By using the detection device and magnet 28 together, the position of the tool holder 21 can be detected, thereby identifying whether the tool holder 21 is installed or whether the tool holder 21 is installed flat and in place, so as to avoid program errors caused by the tool holder 21 being missing or not installed in place, making the use more intelligent.

[0062] Of course, in another preferred embodiment, a detection device and a suction member are provided on the bottom outer side of the stirring cup 10. The magnet 28 located in the mounting groove can be attracted with the suction member to limit the blade assembly and the stirring cup. At the same time, the magnet 28 is adapted to the detection device to realize the position detection of the blade assembly.

[0063] Preferably, a metal magnetic shielding ring 29 is also installed in the mounting slot to isolate the magnet 28 from the driven disk 23.

[0064] The isolation effect of the magnetic isolation ring 29 reduces magnetic field interference between the magnet 28 and the driven disk 23, preventing the formation of a closed loop of magnetic lines of force between the driven disk 23 and the magnet 28. This allows the driven disk 23 to form a closed loop with the drive device 40, achieving effective and sensitive transmission. The magnet 28 used for attraction also forms a closed loop with the attraction component 50, strengthening the magnetic force between them and ensuring reliable attraction. This not only achieves reliable positioning between the blade assembly 20 and the stirring cup 10 but also ensures effective and sensitive transmission of the driven disk 23, enabling reliable rotation of the blade assembly 20.

[0065] This utility model does not limit the connection method between the upper and lower shells, such as... Figure 1 As shown, in a preferred embodiment, the lower housing 212 has an upwardly extending lower annular wall on its side, and the upper housing 211 has a downwardly extending upper annular wall on its side. The lower annular wall and the upper annular wall are fitted together and fixedly connected, and the upper annular wall and / or the lower annular wall form the outer wall of the second chamber.

[0066] Since the upper and lower ends of the main body 241 abut against the upper housing 211 and the lower housing 212 respectively, the upper housing 211 and the lower housing 212 clamp the main body 241 of the bushing 24. During the assembly of the tool assembly 20, the upper housing 211 relies on the upper end of the main body 241 of the bushing 24 for axial positioning, and the lower housing 212 relies on the lower end of the bushing 24 for axial positioning. This achieves the limited and fixed installation of the upper housing 211, the bushing 24, and the lower housing 212, thereby using the bushing 24 as a unified positioning reference to achieve the assembly of the tool assembly 20. The abutment between the bushing 24 and the lower housing 212 directly determines the clearance size between the driven disk 23 and the lower housing 212, thereby reducing the axial fit dimension chain of the tool assembly 20 and enabling more direct and precise control over the clearance formed between the bottom surface of the lower housing 212 and the driven disk 23. By employing an upwardly extending lower annular wall on the side of the lower housing 212 and a downwardly extending upper annular wall on the side of the upper housing 211, the lower annular wall and the upper annular wall are fitted together and fixedly connected, forming a nested structure instead of abutting fit between the end faces of the upper housing 211 and the lower housing 212. After the upper housing 211 and the lower housing 212 clamp the bushing 24 and are fixedly connected, the nested structure formed by the upper annular wall and the lower annular wall cancels out the axial fit tolerance between the upper housing 211 and the lower housing 212, further avoiding the stacking of axial tolerances of the tool assembly 20. Therefore, precise assembly of the blade assembly 20 is achieved, improving installation accuracy. This allows for precise control of the clearance between the lower housing 212 and the bottom surface of the driven disk 23, ensuring rotational clearance between the driven disk 23 and the lower housing 212, enabling smooth rotation of the driven disk 23, and ultimately reducing the distance between the driven disk 23 and the drive device 40 (e.g., the drive disk 42), thus improving the effectiveness and reliability of the transmission. Therefore, this embodiment ensures that the driven disk 23 and the drive device 40 always remain within the preset transmission dimension range, guaranteeing reliable power transmission even in the mass production application of food processing machines. This facilitates the commercial application and promotion of non-contact magnetic transmission.

[0067] More preferably, a guide slope is provided at the top of the lower ring wall to engage with the upper ring wall; by providing the guide slope, a guide is formed for the nesting engagement of the upper and lower ring walls, thereby facilitating assembly and alignment, reducing installation effort, and enabling quick engagement of the upper and lower ring walls, so as to further fix the upper and lower ring walls and improve assembly efficiency.

[0068] More preferably, the top of the lower ring wall is inserted into the inner side of the upper ring wall, and the lower ring wall is welded to the upper ring wall. By inserting the top of the lower ring wall into the inner side of the upper ring wall, the upper shell 211 wraps around the top of the lower shell 212, allowing the mating seam between the two to face downwards, which facilitates sealing between the upper shell 211 and the lower shell 212. Moreover, the method of welding the lower ring wall to the upper ring wall simplifies assembly and ensures reliable fixation.

[0069] In addition to the connection method described above, in another preferred embodiment, the upper ring wall of the upper shell is aligned with the lower ring wall of the lower shell and then welded together for fixation.

[0070] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0071] 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.

[0072] The above description is merely an embodiment of this utility model and is 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 processor comprising a mixing bowl, a blade assembly removably mounted within the mixing bowl, characterised in that, The knife assembly comprises an upper shell and a lower shell enclosing a mounting cavity, a shaft sleeve mounted in the mounting cavity, a bearing mounted in the shaft sleeve, a transmission shaft penetrating the bearing, a driven magnetic disc located in the mounting cavity and connected to the lower end of the transmission shaft, the upper end of the transmission shaft penetrating the upper shell and connected with a blade, the shaft sleeve comprises a main body surrounding the outer periphery of the driven magnetic disc, the upper end and the lower end of the main body abutting against the upper shell and the lower shell respectively to divide the mounting cavity into a first chamber accommodating the driven magnetic disc and a second chamber located at the outer periphery of the first chamber.

2. A food processor as claimed in claim 1, characterised in that The bottom of the stirring cup comprises a sink and a mounting portion connected above the sink, the upper shell and the lower shell sink into the sink, and the outer sidewall of the mounting portion is provided with a heating pipe.

3. A food processor as claimed in claim 2, wherein The outer cavity wall of the second chamber is radially limited by the sink, the upper surface of the upper shell and the mounting portion enclose a heating cavity, and the heating pipe heats the heating cavity.

4. A food processor as claimed in claim 2, wherein The upper end of the main body is downwardly recessed to form an annular recess, and the recess and the upper shell enclose a third chamber.

5. A food processor as claimed in claim 4, wherein The main body comprises a surrounding wall surrounding the outer periphery of the driven magnetic disc and a reinforcing wall connected to the bottom end of the surrounding wall and located at the outer periphery of the surrounding wall, the inner side of the surrounding wall defines the first chamber, the surrounding wall and the reinforcing wall define the third chamber, and the surrounding wall is downwardly and outwardly inclined.

6. The food processor of claim 1, wherein, The lower end of the main body is upwardly recessed to form a mounting groove, a magnet is arranged in the mounting groove, and the outer side of the bottom wall of the stirring cup is provided with an attracting member matched with the magnet.

7. The food processor of claim 1, wherein, The lower end of the main body is upwardly recessed to form a mounting groove, a magnet is arranged in the mounting groove, and the outer side of the bottom wall of the stirring cup is provided with an attracting member matched with the magnet.

8. A food processor as claimed in claim 6 or 7, characterised in that, The mounting groove is further provided with a magnetic ring made of metal and isolating the magnet from the driven magnetic disc.

9. The food processor of claim 1, wherein, The side of the lower shell is provided with a lower ring wall extending upwardly, the side of the upper shell is provided with an upper ring wall extending downwardly, the lower ring wall and the upper ring wall are sleeved and fixedly connected.

10. A food processor as claimed in claim 9, characterised in that, A guide inclined surface is arranged on the top of the lower ring wall and inserted into the upper ring wall. Alternatively, the top of the lower ring wall is inserted into the inner side of the upper ring wall, and the lower ring wall and the upper ring wall are welded.

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