A compact food processor

Abstract

The utility model belongs to the technical field of food processing devices, and discloses a compact food processing machine, including a cup body, a variable frequency brushless motor and a crushing knife. A lower opening is set at the lower end of the cup body, and the variable frequency brushless motor includes a motor bracket and a stator and a rotor fixed below the motor bracket. The motor bracket closes the lower opening and is fixed with a heating tube. The rotating shaft of the rotor passes through the motor bracket and extends into the cup body to connect with the crushing knife. An installation cavity is set between the upper end surface of the stator and the motor bracket. A temperature measuring element fixed to the motor bracket is set in the installation cavity, and the heating tube is arranged around the outer periphery of the installation cavity. The compact food processing machine provided by the utility model adopts a variable frequency brushless motor, has a small size, integrates the heating function of the heating tube and the function of closing the lower opening of the cup body without increasing the height of the motor, so that the structural layout is compact, the height of the whole machine is reduced, the assembly process is simplified, the assembly efficiency is improved, the parts are reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of food processing devices, and in particular relates to a food processing machine with a compact structure. Background Art

[0002] Traditional food processors are often driven by series-excited motors due to product pricing restrictions and simple drive requirements. However, the stator coil of the series-excited motor protrudes relative to the stator, increasing the overall volume of the motor, requiring a larger space to accommodate the motor in the design of the food processor. A food processor generally includes a cup body, a heating plate fixed to the bottom of the cup body, and a series-excited motor. Usually, the heating plate and the cup body need to be fixed first, and then the series-excited motor is fixed to the bottom of the heating plate. The assembly process is numerous and the assembly efficiency is low. In addition, during the assembly process, the heating parts on the heating plate need to reasonably avoid the stator coils, resulting in structural layout limitations, non-compact layout of the components, waste of space inside the main machine, and a large size of the whole machine, which is inconvenient to take and store.

[0003] With the continuous development and innovation of food processing machine technology, the applicant has developed a food processing machine using a permanent magnet brushless motor. For example, the low-noise food processing machine disclosed in the patent with application number 202322295189.9 includes a cup body, which includes a cup body and a heating plate. The heating element is embedded in the heating plate, and the upper end cover is integrally formed and arranged on the heating plate. The cup body and the heating plate are integrally cast to form a cast aluminum cup body. The heating element is a heating tube embedded in the bottom of the cup body, and the upper end cover is integrally formed and arranged at the bottom of the cast aluminum cup body. The permanent magnet brushless motor used in this scheme has a compact structure. At the same time, because the upper end cover is integrally formed and arranged at the bottom of the cast aluminum cup body, the permanent magnet brushless motor and the cup body form a crushing power system assembly, which runs smoothly.

[0004] However, in order to achieve sufficient boiling of the slurry in the food processing machine and prevent the heating tube from overheating and causing the slurry to overflow, it is also necessary to install temperature measuring elements such as temperature sensors and thermostats on the heating plate. The traditional heating plate is a downwardly concave structure with limited size. The heating tube is generally embedded in the outer wall of the heating plate, and the temperature measuring element is arranged on the bottom wall of the heating plate. Therefore, in order to provide installation positions for the heating tube and the temperature measuring element, the height of the heating tube and the temperature measuring element needs to be vertically stacked. The structural arrangement is not compact enough and the space utilization rate is low, resulting in a large height of the heating plate assembly and an increase in the height of the entire machine. Utility Model Content

[0005] The utility model provides a food processing machine with a compact structure. On the basis of solving the problem of complicated assembly caused by independent components of the existing food processing machine, it solves the technical problem of large height of the whole machine caused by unreasonable use of vertical space of the whole machine, realizes structural integration and compactness, and reduces the height of the whole machine.

[0006] The technical solution adopted by the utility model is:

[0007] The utility model provides a food processing machine with a compact structure, comprising a cup body, a variable frequency brushless motor and a crushing knife, wherein a lower opening is arranged at the lower end of the cup body, the variable frequency brushless motor comprises a motor bracket and a stator and a rotor fixed below the motor bracket, the motor bracket closes the lower opening and is fixed with a heating tube, the rotating shaft of the rotor passes through the motor bracket and extends into the cup body to be connected with the crushing knife, an installation cavity is arranged between the upper end surface of the stator and the motor bracket, a temperature measuring element fixed to the motor bracket is arranged in the installation cavity, and the heating tube is arranged around the outer periphery of the installation cavity.

[0008] The compact food processing machine provided by the utility model adopts a variable frequency brushless motor, including a motor bracket and a stator and a rotor fixed under the motor bracket. Compared with the traditional series-excited motor, it is compact, convenient and reasonably avoids various components, and has high space utilization. The motor bracket closes the lower opening and is fixed with a heating tube. The motor bracket integrates multiple functions of heating and closing the lower opening of the cup body, so that the variable frequency brushless motor and the cup body form a crushing system to achieve structural integration, which can reduce the height overlap caused by the independent setting of each component and reduce the height of the whole machine. At the same time, it simplifies the assembly process during the assembly process, improves assembly efficiency, reduces parts, and reduces costs. Since the variable frequency brushless motor and the cup body directly form a crushing system, the rotating shaft of the rotor passes through the motor bracket and extends into the cup body to connect with the crushing knife. The height of the rotating shaft is also reduced, which reduces the probability of transmission deflection, greatly improves the stability of the transmission, and reduces working noise. By setting an installation cavity between the upper end surface of the stator and the motor bracket, a temperature measuring element fixed to the motor bracket is arranged in the installation cavity, and the heating tube is arranged around the outer periphery of the installation cavity. The temperature measuring element is used to detect the temperature of the cup body or the heating tube is controlled accordingly, which is conducive to achieving full boiling and heating power control of the whole machine, and the structure is reliable. By setting the installation cavity, the vertical space between the stator and the motor bracket is reasonably utilized, and the installation cavity is used to perform appropriate spatial isolation between the motor body (including the stator and the rotor) and the heating tube. The two are staggered in the height direction to avoid thermal interference between the heating tube and the motor body, and improve the temperature rise of the motor. At the same time, the temperature measuring element is installed in the installation cavity. The temperature measuring element and the motor body can be electrically connected to the heating tube while reasonably avoiding each other to ensure effective detection. Since the heating tube is arranged around the outer periphery of the installation cavity, the heating tube and the installation cavity share the vertical space, which avoids causing the overall height of the motor bracket to increase. The heating function of the heating tube and the function of closing the lower opening of the cup body are integrated without increasing the height of the variable frequency brushless motor, so as to maximize the space utilization, make the structure compact, and reduce the height of the whole machine.

[0009] In a preferred embodiment, the motor bracket is arched into the cup body and has a top wall and a side wall connected to the edge of the top wall, the installation cavity is located between the top wall and the upper end surface of the stator, and the installation cavity overlaps with the projection of the cup body in the horizontal direction.

[0010] By arching the motor bracket into the cup body, the installation cavity is located between the top wall and the upper end surface of the stator, the volume of the installation cavity can be expanded, and sufficient installation space is provided for the heating tube and the temperature measuring element under the limited height of the motor bracket, which is convenient for accommodating and installing the temperature measuring element. The structure is compact and the space utilization is reasonable. The installation cavity and the cup body have overlapping projections in the horizontal direction, so that reliable radial limitation is achieved between the motor bracket and the cup body.

[0011] In a preferred embodiment, the stator and the cup body overlap in horizontal projection.

[0012] The horizontal projections of the stator and the cup body overlap, making the vertical arrangement of the components more compact, which is beneficial to reducing the height of the entire machine and the height of the rotating shaft, improving the driving stability of the motor, and reducing working noise.

[0013] In a preferred embodiment, the heating pipe is arranged along the inner side of the side wall;

[0014] Arranging the heating tube along the inner side of the side wall can make full use of the radial space of the motor bracket, maximize the outer diameter of the heating tube, and improve the heating power to the cup body. At the same time, it is beneficial for the heating tube to be radially away from the motor body, reduce the heat interference to the motor body, and improve the temperature rise of the motor.

[0015] In a preferred embodiment, the motor bracket further comprises a flange folded outward from the bottom end of the side wall, and the food processor comprises a cup seat fixed under the cup body, and the cup seat and the cup body clamp the flange.

[0016] By arranging an outwardly folded flange on the motor bracket and clamping the flange with the cup seat and the cup body, the motor bracket can be reliably fixed. The motor bracket not only closes the lower opening of the cup body, but also is reliably sealed and fixed to the lower end of the cup body. The structure is complete and reliable, the assembly method is simple, and the assembly efficiency of the whole machine is improved.

[0017] In a preferred embodiment, the motor bracket has a top wall and a partition wall extending downward from the top wall, the partition wall, the upper end surface of the stator and the top wall of the motor bracket form the installation cavity, and the heating tube is arranged on the outside of the partition wall.

[0018] By arranging an isolation wall on the motor bracket, the isolation wall, the upper end surface of the stator and the top wall of the motor bracket form the installation cavity, and the heating tube is arranged on the outside of the isolation wall. The isolation wall directly blocks the heat of the heating tube, reduces the heat transfer of the heating tube to the installation cavity laterally, and then achieves the effect of heat insulation protection for the temperature measuring element arranged in the installation cavity and the motor body located below the installation cavity, reduces the influence of heat radiation on the motor, and prolongs the service life of the motor body.

[0019] In a preferred embodiment, the variable frequency brushless motor further comprises a lower bracket for accommodating the stator and the rotor, and the lower bracket is fixedly connected to the isolation wall.

[0020] By setting up the isolation wall, the heat insulation effect can be achieved, and at the same time, the lower bracket and the isolation wall are fixedly connected, so that the isolation wall plays the role of fixing the lower bracket. The isolation wall integrates multiple functions in one, eliminating the need to set up a separate fixing position in other parts of the motor bracket. The structure is compact and the layout is reasonable, which realizes maximum utilization of space.

[0021] In a preferred embodiment, the motor bracket further includes a side wall extending downward from the edge of the top wall, the side wall surrounds the outer circumference of the isolation wall, and an installation groove for installing the heating tube is formed between the side wall and the isolation wall.

[0022] By arranging side walls and isolation walls on the motor bracket, the side walls surround the outer circumference of the isolation walls, and an installation groove for installing the heating tube is formed between the side walls and the isolation walls, thereby achieving heat isolation between the inner and outer sides of the heating tube, and the heat is concentrated in the installation groove, and then concentratedly transferred to the cup body, thereby reducing heat loss and improving the heating efficiency of the heating tube. At the same time, in the process of assembling the heating tube to the motor bracket, the installation groove plays a certain positioning role, realizing the pre-positioning of the heating tube, and facilitating accurate and rapid installation of the heating tube.

[0023] In a preferred embodiment, the variable frequency brushless motor further comprises a lower bracket accommodating the stator and the rotor, the side wall of the lower bracket extending to be fixedly connected to the top wall of the motor bracket, and the side wall of the lower bracket isolates the heating tube from the stator.

[0024] By extending the side wall of the lower bracket to be fixedly connected to the top wall of the motor bracket, reliable fixation between the motor body and the motor bracket is achieved. At the same time, the side wall of the lower bracket isolates the heating tube and the stator, as well as the heating tube and the temperature measuring element, to avoid the heat radiation effect of the heating tube on the stator, which is also beneficial to reduce the heat loss of the heating tube and improve the heating efficiency of the cup body.

[0025] In a preferred embodiment, the motor bracket is provided with an axial hole for the rotating shaft to pass through, a shaft seal is provided between the rotating shaft and the axial hole, the rotating shaft is also sleeved with a bearing located below the shaft seal, and the bearing is fixed on the motor bracket.

[0026] By arranging a shaft hole and a shaft seal on the motor bracket, the bearing is fixed on the motor bracket and located below the shaft seal. The shaft seal prevents the liquid in the cup body from flowing downward into the installation cavity and the stator, and at the same time prevents the lubricating oil of the bearing from being thrown upward into the cup body. A single shaft seal can achieve a two-way sealing effect. While ensuring reliable sealing, the structure of each component is compact, the operation of the rotating shaft is smooth, and the motor drive is stable and reliable.

[0027] In a preferred embodiment, the top wall of the motor bracket is provided with an upwardly protruding boss, the top wall of the boss forms the shaft hole, and the shaft seal is fixed in the boss;

[0028] By providing an upwardly protruding boss on the top wall of the motor bracket and setting the shaft hole on the top wall of the boss, the position of the shaft hole is raised and the risk of leakage from the shaft hole is reduced. The shaft seal is fixed in the boss to further improve the sealing at the shaft hole and achieve a two-way sealing effect. The boss provides an installation space for the shaft seal and protects the periphery of the shaft seal to ensure reliable sealing of the shaft seal.

[0029] In a preferred embodiment, the top wall of the motor bracket is provided with an annular rib extending downward into the mounting cavity, and the annular rib encloses a bearing chamber for mounting the bearing.

[0030] An annular rib is arranged on the top wall of the motor bracket, and the annular rib surrounds a bearing chamber to form radial protection and limit the bearing, so that the positioning of the bearing and the motor bracket is stable, thereby providing a basis for the smooth rotation of the shaft and ensuring the stability of the motor operation.

[0031] In a preferred embodiment, the temperature measuring element comprises a temperature sensor, a temperature controller and a fuse, and the temperature sensor, the temperature controller and the fuse are all fixed in the installation cavity.

[0032] The temperature measuring element includes a temperature sensor, a thermostat and a fuse. The temperature sensor can monitor the temperature of the liquid in the cup in real time and transmit the temperature information to the thermostat. The thermostat controls the working state of the heating tube according to the preset temperature range to ensure that the liquid in the cup is kept within the required temperature range, which can not only achieve full boiling, but also effectively prevent overflow due to overheating, achieve precise temperature control, and provide a better user experience. By setting the fuse, the fuse plays a protective role in the circuit. When the temperature of the heating tube is too high or an abnormal situation occurs, the fuse can be melted and the circuit can be cut off, thereby preventing damage or danger that may be caused by overheating of the heating tube. The temperature sensor, the fuse and the thermostat are used in combination to provide double protection and improve the safety of use. The temperature sensor, the thermostat and the fuse are all fixed in the installation cavity to maximize the space utilization, make the structure compact, and reduce the height of the whole machine.

[0033] In a preferred embodiment, the temperature sensor, the temperature controller and the fuse are arranged at intervals around the rotating shaft.

[0034] The space of the installation cavity is further maximized, and a compact layout is achieved while maintaining a safe distance between the temperature sensor, the thermostat and the fuse, which is conducive to reducing the size of the entire machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0036] Figure 1 A structural schematic diagram of a food processing machine provided for implementation example 1 of the utility model;

[0037] Figure 2 A schematic diagram of the exploded structure of the cup assembly provided in Example 1 of the present utility model;

[0038] Figure 3 A cross-sectional schematic diagram of a variable frequency brushless motor provided in Example 1 of the present utility model;

[0039] Figure 4 The exploded structural diagram of the variable frequency brushless motor provided in Example 1 of the present utility model;

[0040] Figure 5 The schematic diagram of the assembly of the motor bracket and the temperature measuring element provided in the embodiment 1 of the utility model;

[0041] Figure 6 This is a schematic structural diagram of the lower bracket provided for implementation example 1 of the utility model.

[0042] Explanation of the reference numerals: 10, cup body; 11, cup holder; 12, cup cover; 13, handle; 20, variable frequency brushless motor; 21, motor bracket; 2101, top wall; 2102, side wall; 2103, flange; 2104, partition wall; 2105, upper stud; 211, boss; 212, shaft hole; 213, shaft seal; 214, bearing; 215, annular rib; 22, motor body; 221, stator; 222, rotor; 2221, rotating shaft; 223, lower bracket; 2231, lower stud; 30, crushing knife; 40, heating tube; 50, temperature measuring element; 51, temperature sensor; 52, temperature controller; 53, fuse; 60, installation cavity; 70, host; 80, coupler; 90, sealing ring. DETAILED DESCRIPTION

[0043] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present invention and the features in each embodiment may be combined with each other without conflict.

[0045] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0048] like Figure 1-6 As shown, the utility model provides a compact food processor in implementation example 1, including a cup body 10, a variable frequency brushless motor 20 and a crushing knife 30, and a lower opening is set at the lower end of the cup body 10, such as Figure 3 , Figure 4 As shown, the variable frequency brushless motor 20 includes a motor bracket 21 and a motor body 22. The motor body 22 includes a stator 221 and a rotor 222 fixed under the motor bracket 21. The motor bracket 21 closes the lower opening and is fixed with a heating tube 40. The rotating shaft 2221 of the rotor 222 passes through the motor bracket 21 and extends into the cup body 10 to be connected with the crushing knife 30. An installation cavity 60 is set between the upper end surface of the stator 221 and the motor bracket 21. A temperature measuring element 50 fixed to the motor bracket 21 is set in the installation cavity 60, and the heating tube 40 is arranged around the outer periphery of the installation cavity 60.

[0049] It should be noted that the temperature measuring element 50 may be any one or more of a temperature sensor 51, a temperature controller 52, and a fuse 53. In the implementation example 1, Figure 4 , Figure 5 As shown, preferably, the temperature measuring element 50 includes a temperature sensor 51, a temperature controller 52, and a fuse 53, and the temperature sensor 51, the temperature controller 52, and the fuse 53 are all arranged in the installation cavity 60. Optionally, the temperature sensor 51, the temperature controller 52, and the fuse 53 are respectively fixed to the motor bracket 21 by screws, and the temperature sensor 51, the temperature controller 52, and the fuse 53 are arranged at intervals around the rotating shaft.

[0050] The temperature measuring element includes a temperature sensor, a thermostat and a fuse. The temperature sensor can monitor the temperature of the liquid in the cup in real time and transmit the temperature information to the thermostat. The thermostat controls the working state of the heating tube according to the preset temperature range to ensure that the liquid in the cup is kept within the required temperature range, which can not only achieve full boiling, but also effectively prevent overflow due to overheating, achieve precise temperature control, and provide a better user experience. By setting the fuse, the fuse plays a protective role in the circuit. When the temperature of the heating tube is too high or an abnormal situation occurs, the fuse can be melted and the circuit is cut off, thereby preventing damage or danger that may be caused by overheating of the heating tube. The temperature sensor, the fuse and the thermostat are used in combination to provide double protection and improve the safety of use. The temperature sensor, the thermostat and the fuse are all fixed in the installation cavity and arranged at intervals around the rotating shaft. The space utilization is maximized, the structure is compactly arranged, the height of the whole machine is reduced, and the size of the whole machine is reduced.

[0051] like Figure 1 , Figure 2 As shown, in this embodiment, the food processor also includes a host 70 and a cup holder 11 fixed below the cup body 10, a cup cover 12 installed above the cup body, and a handle 13 arranged on the side of the cup body, forming a cup body assembly, and the cup body assembly is detachably installed above the host 70, a power board is arranged in the host 70, and a coupler 80 is arranged between the host 70 and the cup body assembly. Of course, the food processor provided by the utility model is not limited to the one type provided in embodiment 1. In other embodiments, the food processor can also be a food processor that does not need to be washed by hand, that is, the cup body assembly is fixed in the host 70.

[0052] The compact food processing machine provided in the implementation example 1 of the utility model adopts a variable frequency brushless motor 20, including a motor bracket 21 and a stator 221 and a rotor 222 fixed under the motor bracket 21. Compared with the traditional series-excited motor, it is compact, convenient and reasonably avoids various components, and has high space utilization. The motor bracket 21 closes the lower opening and is fixed with a heating tube 40. The motor bracket 21 integrates multiple functions of heating and closing the lower opening of the cup body 10, so that the variable frequency brushless motor 20 and the cup body 10 form a crushing system, realizing structural integration, which can reduce the height superposition caused by the independent setting of each component and reduce the height of the whole machine. At the same time, it simplifies the assembly process during the assembly process and improves the assembly efficiency. Since the variable frequency brushless motor 20 directly forms a crushing system with the cup body 10, the rotating shaft 2221 of the rotor 222 passes through the motor bracket 21 and extends into the cup body 10 to connect with the crushing knife 30. The height of the rotating shaft 2221 is also reduced, which reduces the probability of transmission deflection, greatly improves the stability of the transmission, and reduces the working noise. By setting an installation cavity 60 between the upper end surface of the stator 221 and the motor bracket 21, a temperature measuring element 50 fixed to the motor bracket 21 is arranged in the installation cavity 60, and the heating tube 40 is arranged around the outer periphery of the installation cavity 60, the temperature measuring element 50 is used to detect the temperature of the cup body 10 or the heating tube 40 is controlled accordingly, which is conducive to achieving full boiling and heating power control of the whole machine, and the structure is reliable. By setting the installation cavity 60, the vertical space between the stator 221 and the motor bracket 21 is reasonably utilized, and the installation cavity 60 is used to appropriately isolate the motor body 22 and the heating tube 40, and the two are staggered in the height direction to avoid the heating tube 4 0 and the motor body 22 to improve the temperature rise of the motor. At the same time, the temperature measuring element 50 is installed in the installation cavity 60. The temperature measuring element 50 and the motor body 22 are reasonably avoided and can be electrically connected to the heating tube 40 to ensure effective detection. Since the heating tube 40 is arranged around the outer periphery of the installation cavity 60, the heating tube 40 and the installation cavity 60 share the vertical space to avoid causing the overall height of the motor bracket 21 to increase. Under the premise of not increasing the height of the variable frequency brushless motor 20, the heating function of the heating tube 40 and the function of closing the lower opening of the cup body 10 are integrated to maximize the space utilization, make the structure compact, and reduce the height of the whole machine.

[0053] The present invention does not limit the structure of the motor bracket 21 and the formation method of the mounting cavity 60. For example:

[0054] Implementation example 1, such as Figure 1-6 As shown, the motor bracket 21 is arched into the cup body 10 and has a top wall 2101 and a side wall 2102 connected to the edge of the top wall. The installation cavity 60 is located between the top wall and the upper end surface of the stator 221, and the installation cavity 60 overlaps with the projection of the cup body 10 in the horizontal direction.

[0055] More specifically, if Figure 3As shown, the motor bracket 21 also has a partition wall 2104 extending downward from the top wall 2101, the partition wall 2104, the upper end surface of the stator 221 and the top wall 2101 of the motor bracket 21 form a mounting cavity 60, the heating tube 40 is surrounded on the outside of the partition wall, and a mounting groove for mounting the heating tube 40 is formed between the side wall and the partition wall. The heating tube 40 is arranged along the inner side of the side wall.

[0056] By setting a partition wall on the motor support 21, the partition wall, the upper end surface of the stator 221 and the top wall of the motor support 21 form a mounting cavity 60, and the heating tube 40 is surrounded by the outer side of the partition wall. The partition wall directly blocks the heat of the heating tube 40, reduces the heat of the heating tube 40 from being transferred horizontally into the mounting cavity 60, and then achieves the effect of heat insulation protection for the temperature measuring element 50 arranged in the mounting cavity 60 and the motor body 22 located below the mounting cavity 60, reduces the influence of heat radiation on the motor, and prolongs the service life of the motor body 22. Since the side wall surrounds the outer periphery of the partition wall, a mounting groove for mounting the heating tube 40 is formed between the side wall and the partition wall, thereby achieving heat isolation between the inner and outer sides of the heating tube 40, the heat is concentrated in the mounting groove, and then concentratedly transferred to the cup body 10, reducing heat loss and improving the heating efficiency of the heating tube 40. At the same time, in the process of assembling the heating tube 40 to the motor support 21, the mounting groove plays a certain positioning role, realizes the pre-positioning of the heating tube 40, and facilitates the accurate and rapid installation of the heating tube 40.

[0057] Arranging the heating tube 40 along the inner side of the side wall can make full use of the radial space of the motor bracket 21, maximize the outer diameter of the heating tube 40, and improve the heating power of the cup body 10. At the same time, it is beneficial for the heating tube 40 to be radially away from the motor body 22, reduce the heat interference to the motor body 22, and improve the temperature rise of the motor.

[0058] In addition, in this embodiment, the motor bracket 21 also has a flange 2103 folded outward from the bottom end of the side wall, and the food processor includes a cup seat fixed under the cup body 10, and the cup seat and the cup body 10 clamp the flange.

[0059] By providing an outward-folded flange on the motor bracket 21 and utilizing the cup seat and the cup body 10 to clamp the flange, the motor bracket 21 can be reliably fixed. The motor bracket 21 not only closes the lower opening of the cup body 10, but is also reliably sealed and fixed to the lower end of the cup body 10. The structure is complete and reliable, the assembly method is simple, and the assembly efficiency of the entire machine is improved.

[0060] In this embodiment, the motor bracket 21 is arched into the cup body 10 so that the installation cavity 60 is located between the top wall and the upper end surface of the stator 221, thereby expanding the volume of the installation cavity 60 and providing sufficient installation space for the heating tube 40 and the temperature measuring element 50 under the limited height of the motor bracket 21, thereby facilitating the accommodation and installation of the temperature measuring element 50. The structure is compact and the space utilization is reasonable. The projections of the installation cavity 60 and the cup body 10 in the horizontal direction overlap, so that reliable radial limitation is achieved between the motor bracket 21 and the cup body 10.

[0061] Preferably, the projections of the stator 221 and the cup body 10 in the horizontal direction overlap, that is, the upper end of the stator 221 also extends into the cup body.

[0062] The horizontal projections of the stator 221 and the cup body 10 overlap, making the vertical arrangement of the components more compact, which is beneficial to reducing the height of the entire machine and the height of the rotating shaft 2221, improving the driving stability of the motor, and reducing working noise.

[0063] Alternatively, if Figure 3 As shown, the motor body 22 of the variable frequency brushless motor 20 further includes a lower bracket 223 for accommodating a stator 221 and a rotor 222 . The lower bracket 223 is fixedly connected to the isolation wall to realize the assembly of the variable frequency brushless motor 20 .

[0064] Specifically, refer to Figure 5 and Figure 6 , the lower bracket 223 and the isolation wall 2104 are vertically aligned, the lower bracket 223 and the isolation wall 2104 are butted, a lower stud 2231 is arranged on the outer side of the lower bracket 223, an upper stud 2105 is arranged on the outer side of the isolation wall, and a screw passes through the lower stud and is locked on the upper stud to achieve fixation. By setting the isolation wall, the heat insulation effect can be achieved, and the lower bracket 223 and the isolation wall are fixedly connected, so that the isolation wall plays the role of fixing the lower bracket 223. The isolation wall integrates multiple functions in one, eliminating the need to set a separate fixing position in another part of the motor bracket 21, and has a compact structure and reasonable layout, thereby achieving maximum utilization of space.

[0065] Implementation Example 2 is different from Implementation Example 1 in that the motor bracket 21 in this implementation example only includes a top wall and a partition wall, and the partition wall, the upper end surface of the stator 221 and the top wall of the motor bracket 21 form an installation cavity 60, and the heating tube 40 is arranged on the outside of the partition wall.

[0066] Implementation Example 3 is different from Implementation Example 1 in that the motor bracket 21 in this implementation example only includes a top wall and a side wall, and does not include an isolation wall. Specifically, the motor bracket 21 is arched into the cup body 10 and has a top wall and a side wall connected to the edge of the top wall. The installation cavity 60 is located between the top wall and the upper end surface of the stator 221, and the heating tube 40 surrounds the side wall of the installation cavity 60.

[0067] Preferably, the installation cavity 60 overlaps with the projection of the cup body 10 along the horizontal direction.

[0068] Implementation Example 4. The structure of the motor bracket 21 in this implementation example is the same as that in Implementation Example 3. The difference from Implementation Example 3 is that the variable frequency brushless motor 20 also includes a lower bracket 223 for accommodating the stator 221 and the rotor 222. The lower bracket 223, the stator 221 and the rotor 222 constitute the motor body 22. The lower bracket 223 extends upward to be connected to the top wall of the motor bracket 21, that is, the lower bracket 223, the upper end surface of the stator 221 and the motor bracket 21 enclose a mounting cavity 60, thereby realizing thermal isolation of the heating tube 40 and the stator 221, as well as thermal isolation of the heating tube 40 and the temperature measuring element 50.

[0069] By extending the side wall of the lower bracket 223 to be fixedly connected to the top wall of the motor bracket 21, reliable fixation between the motor body 22 and the motor bracket 21 is achieved. At the same time, the side wall of the lower bracket 223 isolates the heating tube 40 and the stator 221, and separates the heating tube 40 and the temperature measuring element 50, thereby avoiding the heat radiation effect of the heating tube 40 on the stator 221, and is also beneficial to reducing the heat loss of the heating tube 40 and improving the heating efficiency of the cup body 10.

[0070] Implementation Example 5 is different from Implementation Example 1 in that the motor bracket 21 in this implementation example is a flat plate extending horizontally to close the lower opening. In this implementation example, optionally, a height difference is set between the stator 221 and the motor bracket 21, and the side wall of the heating tube 40 or the lower bracket 223 is used to form the installation cavity 60.

[0071] It should be noted that the present invention does not limit the sealing and matching methods of the rotating shaft 2221 and the motor bracket 21. For example, in the implementation example 1, Figure 3 , 4 As shown, the motor bracket 21 is provided with a shaft hole 212 for the rotating shaft 2221 to pass through, a shaft seal 213 is provided between the rotating shaft 2221 and the shaft hole 212 , and the rotating shaft 2221 is also sleeved with a bearing 214 located below the shaft seal 213 , and the bearing 214 is fixed on the motor bracket 21 .

[0072] By setting the shaft hole 212 and the shaft seal 213 on the motor bracket 21, the bearing 214 is fixed on the motor bracket 21 and is located below the shaft seal 213. The shaft seal 213 prevents the liquid in the cup body 10 from flowing downward into the installation cavity 60 and the stator 221, and prevents the lubricating oil of the bearing 214 from being thrown upward into the cup body 10. A single shaft seal 213 can achieve a two-way sealing effect. While ensuring reliable sealing, the structure of each component is compact, the rotation shaft 2221 runs smoothly, and the motor drive is stable and reliable.

[0073] More preferably, in implementation example 1, Figure 5 As shown, the top wall of the motor bracket 21 is provided with an upwardly protruding boss 211, the top wall of the boss 211 forms a shaft hole 212, and the shaft seal 213 is fixed in the boss 211;

[0074] By setting an upwardly protruding boss 211 on the top wall of the motor bracket 21 and setting the shaft hole 212 on the top wall of the boss 211, the position of the shaft hole 212 is raised and the risk of leakage from the shaft hole 212 is reduced. The shaft seal 213 is fixed in the boss 211 to further improve the sealing at the shaft hole 212 and achieve a two-way sealing effect. The boss 211 provides an installation space for the shaft seal 213 and protects the periphery of the shaft seal 213 to ensure reliable sealing of the shaft seal 213.

[0075] More preferably, if Figure 3 As shown, the top wall of the motor bracket 21 is provided with an annular rib 215 extending downward into the mounting cavity 60 , and the annular rib forms a bearing chamber for mounting the bearing 214 .

[0076] Annular ribs are arranged on the top wall of the motor bracket 21 to enclose a bearing chamber, providing radial protection and limiting for the bearing 214 , so that the positioning of the bearing 214 and the motor bracket 21 is stable, thereby providing a basis for the smooth rotation of the rotating shaft 2221 and ensuring the stability of the motor operation.

[0077] In addition, in order to improve the sealing of the motor bracket 21 and the bottom of the cup body 10, preferably, as Figure 2 As shown, a sealing ring 90 is provided between the motor bracket 21 and the cup body 10 .

[0078] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0079] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0080] The above are only embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A compact food processor, comprising a cup body, a variable frequency brushless motor and a crushing blade, characterized in that: A lower opening is provided at the lower end of the cup body, the variable frequency brushless motor comprises a motor bracket and a stator and a rotor fixed below the motor bracket, the motor bracket closes the lower opening and is fixed with a heating tube, the rotating shaft of the rotor passes through the motor bracket and extends into the cup body to be connected with the crushing knife, an installation cavity is provided between the upper end surface of the stator and the motor bracket, a temperature measuring element fixed to the motor bracket is provided in the installation cavity, and the heating tube is arranged around the outer periphery of the installation cavity.

2. A compact food processor according to claim 1, characterized in that: The motor bracket is arched toward the cup body and has a top wall and a side wall connected to the edge of the top wall. The installation cavity is located between the top wall and the upper end surface of the stator. The installation cavity overlaps with the projection of the cup body in the horizontal direction.

3. A compact food processor according to claim 2, characterized in that: The projections of the stator and the cup body along the horizontal direction overlap.

4. A compact food processor according to claim 2, characterized in that: The heating pipe is arranged along the inner side of the side wall; Alternatively, the motor bracket further comprises a flange folded outward from the bottom end of the side wall, and the food processor comprises a cup seat fixed below the cup body, and the cup seat and the cup body clamp the flange.

5. A compact food processor according to claim 1, characterized in that: The motor bracket has a top wall and a partition wall extending downward from the top wall, the partition wall, the upper end surface of the stator and the top wall of the motor bracket form the installation cavity, and the heating pipe is arranged on the outside of the partition wall.

6. A compact food processor according to claim 5, characterized in that: The variable frequency brushless motor further comprises a lower bracket for accommodating the stator and the rotor, and the lower bracket is fixedly connected to the isolation wall.

7. A compact food processor according to claim 5, characterized in that: The motor bracket also includes a side wall extending downward from the edge of the top wall, the side wall surrounds the outer circumference of the isolation wall, and an installation groove for installing the heating pipe is formed between the side wall and the isolation wall.

8. A compact food processor according to claim 1, characterized in that: The variable frequency brushless motor also includes a lower bracket for accommodating the stator and the rotor, the side wall of the lower bracket extends to be fixedly connected to the top wall of the motor bracket, and the side wall of the lower bracket isolates the heating tube from the stator.

9. A compact food processor according to claim 1, characterized in that: The temperature measuring element comprises a temperature sensor, a temperature controller and a fuse, and the temperature sensor, the temperature controller and the fuse are all fixed in the installation cavity.

10. A compact food processor according to claim 9, characterized in that: The temperature sensor, the temperature controller and the fuse are arranged at intervals around the rotating shaft.

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