Food processor with reliable structure

Abstract

The utility model belongs to the technical field of food processing devices, and discloses a food processor with a reliable structure, which comprises a stirring cup and a machine base, the stirring cup comprises a cup body, a heating disc and a crushing cutter, a motor for driving the crushing cutter is arranged in the machine base, and the heating disc is provided with a bottom wall and an induction side wall extending upwards from the edge of the bottom wall. The motor is a frequency conversion brushless motor located below the bottom wall of the heating disc, the food processor further comprises a coil located in the machine base and surrounding the periphery of the induction side wall and a plurality of magnetic conduction buckles arranged at intervals in the circumferential direction of the coil, and each magnetic conduction buckle comprises a magnetic strip vertically extending and shielding the outer side of the coil and an upper flange and a lower flange connected to the two ends of the magnetic strip. The upper flange and the lower flange shield the upper end and the lower end of the coil respectively, and the lower flange is arranged between the variable-frequency brushless motor and the coil in a blocking mode. The magnetic field of the coil is prevented from leaking outwards, the interference of the coil on the magnetic field of the motor is avoided, the heating condition of the motor is avoided, and the heating efficiency and the temperature rise of the motor are synchronously improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of food processing devices, and particularly relates to a food processor with reliable structure. Background Art

[0002] Generally, the wall-breaking cooking machine on the market includes a machine base, a cup body detachably installed on the machine base, and a cup cover buckled on the cup body. The heating methods of the cooking machine are mainly divided into two types: one is heating tube heating, that is, a heating plate is fixed at the bottom of the cup body, the heating tube is fixed outside the heating plate, a power supply board and a control board are arranged in the machine base, and a strong electric coupler is arranged between the cup body and the machine base to realize the strong electric supply to the heating tube, so that the heating tube can reliably heat the cup body. Due to the setting of the strong electric coupler, the cup body cannot be washed all over, otherwise there is a risk of water ingress into the cup body and the danger of electric connection. At the same time, the structural design of the cup body is complex. During the design process, it is necessary to ensure the waterproofness of the coupler and the reliability of the pin contact, which will also cause a large bonding force between the cup body and the machine base, and it is laborious for users to install.

[0003] Another heating method is electromagnetic induction heating. This method can eliminate the coupler between the cup body and the machine base, simplify the overall structure of the machine, reduce the strong electric connection between the cup body and the machine base, and reduce the potential safety hazards in cleaning the cup body. In the prior art, a food processor includes a main body and a stirring cup assembly. A guide disk extending horizontally is arranged at the bottom of the cup body of the stirring cup, and a coil disk is arranged in the main body, and the coil disk is relatively arranged below the guide disk. Among them, the coil disk includes a bracket, a coil and a magnetic strip installed on the bracket. The coil is formed by spiral laminating metal sheets. The coil is formed by spiral laminating flat metal sheets. The coil and the magnetic strip are both arranged on the same side of the bracket, and the magnetic strip is located between the coil and the bracket. The coil presses and buckles the magnetic strip on the bracket. By the coil, the magnetic strip is blocked on the bracket to prevent magnetic leakage and improve the magnetic field utilization rate of the food processor. At the same time, the coil and the magnetic strip are closely arranged, so that the heat generated by the coil can be transferred to the magnetic strip, thereby increasing the heat dissipation area, improving the heat dissipation efficiency to reduce the temperature rise of the coil, and having high heating efficiency and good heat dissipation performance.

[0004] However, since the coil disk is formed by spiral laminating flat metal sheets in the prior art, the coil disk forms the bottom of the cup body, and the ingredients in the cup are heated from bottom to top during the working process, resulting in poor heating uniformity, easy bottom burning, affecting the taste and nutrition of the ingredients. Moreover, since the motor is fixed below the coil disk, most motors in the prior art are series-excited motors. The series-excited motors have defects such as the coil protruding from the stator and large volume, and there is a problem of magnetic field interference between the coil of the motor and the coil disk, resulting in magnetic leakage of the coil disk, which not only reduces the heating efficiency, but also causes the motor to be heated, which is not conducive to the heat dissipation and normal operation of the motor. Summary of the Utility Model

[0005] The utility model provides a food processor with a reliable structure, which solves the problem of interference between the heating magnetic field and the motor magnetic field caused by magnetic leakage of the heating coil under the premise of realizing electromagnetic induction heating and three-dimensional surround heating.

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

[0007] The utility model provides a food processor with a reliable structure, including a mixing cup and a machine base. The mixing cup includes a cup body, a heating plate located at the bottom of the cup body, and a crushing knife located inside the cup body. A motor for driving the crushing knife is arranged inside the machine base. The heating plate has a bottom wall and an induction side wall extending upward from the edge of the bottom wall. The motor is a variable-frequency brushless motor located below the bottom wall of the heating plate. The food processor further includes a coil located inside the machine base and surrounding the outer periphery of the induction side wall, and a plurality of magnetic conduction buckles arranged at intervals along the circumference of the coil. The magnetic conduction buckle includes a magnetic strip extending vertically and shielding the outside of the coil, and an upper edge and a lower edge connected to both ends of the magnetic strip. The upper edge and the lower edge respectively shield the upper end and the lower end of the coil, and the lower edge is spaced between the variable-frequency brushless motor and the coil.

[0008] The food processor with a reliable structure provided by the utility model realizes electromagnetic induction heating by setting the heating plate to have a bottom wall and an induction side wall extending upward from the edge of the bottom wall, and arranging a coil surrounding the outer periphery of the induction side wall inside the machine base, thus eliminating the need for a strong electrical coupler between the cup body and the machine base, improving the use safety, facilitating full-body water washing of the cup body, and being convenient to use. Moreover, the induction side wall performs three-dimensional surround heating on the liquid inside the cup, with high heating efficiency, enabling the ingredients to start crushing in the most scientific temperature range, efficiently releasing rich nutrients, and bringing a mellow and strong taste. By adopting a variable-frequency brushless motor, it has the advantages of small volume and non-convex hidden coils compared with traditional series-wound motors, thus avoiding interference between the motor magnetic field and the coil magnetic field for heating. Further, a plurality of magnetic conduction buckles are arranged at intervals along the circumference of the coil. The magnetic conduction buckle includes a magnetic strip extending vertically and shielding the outside of the coil, and an upper edge and a lower edge connected to both ends of the magnetic strip. The upper edge and the lower edge respectively shield the upper end and the lower end of the coil, and the lower edge is spaced between the variable-frequency brushless motor and the coil. The magnetic field of the coil is shielded upward, outward, and downward by the magnetic conduction buckle, and only the magnetic field cooperating with the induction side wall inside is retained, thereby preventing the magnetic field of the coil from leaking outward, improving the heating efficiency. At the same time, since the lower edge is spaced between the variable-frequency brushless motor and the coil, it can not only avoid the interference of the coil on the motor magnetic field, avoid the situation of motor heating, and improve the motor temperature rise; at the same time, it can avoid the influence of the motor magnetic field on the coil, ensure that the induction side wall of the heating plate can fully heat, and improve the heating efficiency. Thus, the heating efficiency and the motor temperature rise are improved synchronously.

[0009] In a preferred embodiment, the mixing cup includes a wireless signal transmission module, a wireless receiving module is provided in the base and is matched with the wireless signal transmission module, and the magnetic strip is arranged between the coil and the wireless receiving module.

[0010] By adopting the wireless signal transmission module and the wireless receiving module, reliable signal transmission is achieved, so that the signal transmission between the mixing cup and the base does not need to be connected through wires or couplers, reducing the complexity of wiring, making installation and use more convenient, facilitating the cleaning of the mixing cup, reducing the failure risk caused by problems such as easy aging and breakage of wires in wire connections, improving the reliability of the whole machine and the stability of signal transmission. At the same time, eliminating wire connections improves the waterproof performance.

[0011] In a preferred embodiment, the mixing cup further includes a detection element connected to the wireless signal transmission module, and the detection element is a temperature sensor, an anti-overflow component or a water level sensor.

[0012] By setting the detection element, intelligent pulping is realized. The detection element is connected to the wireless signal transmission module, and signal transmission is realized by using the wireless signal transmission module and the wireless receiving module. The structure is simple and the signal transmission is stable and reliable. The detection element is a temperature sensor to be able to realize real-time monitoring of the temperature of the liquid in the mixing cup. Combined with the three-dimensional heating of the heating plate, accurate control of the temperature of the liquid and sufficient boiling are realized, improving the taste of soy milk; the detection element is an anti-overflow component to avoid overflow and make use worry-free; the detection element is a water level sensor, which can realize low water level detection, prevent dry burning, and can also be applied to automatic water inlet models to realize active quantitative water inlet, making use intelligent, liberating the user's hands and improving the convenience of use.

[0013] In a preferred embodiment, a bracket for fixing the coil is further provided in the base, and an annular groove for accommodating the coil is arranged on the outer side of the bracket.

[0014] By setting the bracket, the coil can be fixed by winding it in the annular groove on the outer side of the bracket. By setting the annular groove, the height position of the coil is determined, avoiding the coil from moving up or down or having installation errors, so that the induction side walls of the coil and the heating plate can be accurately aligned, realizing electromagnetic heating and reliable heating.

[0015] In a preferred embodiment, the annular groove is provided with a notch for cooperating with the magnetic guide buckle, and the magnetic guide buckle is fixed in the notch to limit the coil.

[0016] By providing a notch in the annular groove and cooperating and fixing with the magnetic conduction buckle through the notch, the limit fixation of the magnetic conduction buckle is achieved, preventing the magnetic conduction buckle from loosening. Furthermore, the magnetic conduction buckle is used to stably limit the coil in the annular groove, preventing the coil from radially displacing, and achieving reliable electromagnetic heating.

[0017] In a preferred embodiment, the induction sidewall includes a structural layer integrally connected to the bottom wall, a heat-conducting layer provided outside the structural layer, and a heating layer provided outside the heat-conducting layer. The eddy current effect generated by the heating layer is stronger than that of the structural layer.

[0018] The induction sidewall includes a structural layer, a heat-conducting layer, and a heating layer. At the same time, the eddy current effect generated by the heating layer is stronger than that of the structural layer. The structural layer is used to endow the heating disc with good structural strength to achieve reliable fixation with the cup body. At the same time, the structural layer can be separately selected as a food-grade material to ensure safety after contact with the liquid; the heat-conducting layer is used to achieve uniform and rapid heat conduction, and the heat generated after the heating layer induces the magnetic field is uniformly and rapidly transferred to the structural layer and then to the liquid in the cup body, improving the heating efficiency, preventing local overheating and bottom burning problems, and facilitating accurate temperature detection of the liquid; the heating layer has the characteristic of a strong eddy current effect, so that the heating layer quickly and efficiently generates heat under the action of the magnetic field of the coil. The combination of the heating layer, the heat-conducting layer, and the structural layer realizes efficient heating and heat conduction.

[0019] In a preferred embodiment, the heat-conducting layer extends below the bottom wall.

[0020] By extending the heat-conducting layer below the bottom wall, the induced heat of the laterally arranged heating layer can be transferred to the bottom wall through the heat-conducting layer, so that the liquid can be heated laterally and also from bottom to top, realizing all-round three-dimensional heating, improving the heating efficiency, and making full use of the heat.

[0021] In a preferred embodiment, the bottom wall has a heat-conducting portion covered by the heat-conducting layer and an exposed portion exposed outside the heat-conducting layer at the center of the heat-conducting portion. The exposed portion is provided with a shaft hole for the transmission connection between the crushing knife and the motor.

[0022] In a preferred embodiment, the exposed portion arches upward from bottom to top to form an installation chamber for installing a bearing on the lower side. The shaft hole is located at the top of the installation chamber. The knife shaft of the crushing knife is inserted through the shaft hole and cooperates with the bearing, and the lower end of the knife shaft is detachably connected to the rotating shaft of the motor.

[0023] Since the bottom wall has a heat-conducting portion covered by the heat-conducting layer and an exposed portion located at the center of the heat-conducting portion and exposed outside the heat-conducting layer, while achieving all-round heating by means of the heat-conducting portion, an exposed portion not covered by the heat-conducting layer is reserved at the center of the bottom wall, and reliable installation of components such as the tool shaft, bearing, and shaft seal is achieved by means of the exposed portion, preventing interference and friction between the tool shaft and the heat-conducting layer, and the structure is reliable.

[0024] By passing the tool shaft of the crushing knife through the shaft hole and detachably connecting the lower end to the rotating shaft of the motor, it is convenient for the user to flexibly remove and clean the mixing cup, and the use is convenient.

[0025] In a preferred embodiment, the variable-frequency brushless motor includes an upper end cover, a lower end cover, and a motor main body. The upper end cover and the lower end cover enclose an installation cavity for accommodating the motor main body, and the lower edge blocks between the upper end cover and the coil.

[0026] The variable-frequency brushless motor includes an upper end cover, a lower end cover, and a motor main body. The upper end cover and the lower end cover enclose an installation cavity for accommodating the motor main body, thereby wrapping the motor main body to prevent the coil of the motor from being exposed. At the same time, the lower edge blocks between the upper end cover and the coil. Therefore, the lower edge and the upper end cover layer-by-layer shield the magnetic field between the coil and the motor body, further reducing the interference risk between the coil heating magnetic field and the motor magnetic field, and the two do not affect each other, thereby improving the heating efficiency while improving the temperature rise of the motor. Brief Description of the Drawings

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0028] Figure 1 It is a schematic diagram of the overall structure of a food processor in an embodiment of the present invention;

[0029] Figure 2 It is an exploded schematic diagram of a partial structure of a food processor in an embodiment of the present invention;

[0030] Figure 3 It is a schematic diagram of the structure of a magnetic guide buckle in an embodiment of the present invention;

[0031] Figure 4 It is a schematic diagram of the cooperation between a heating plate assembly and a motor in an embodiment of the present invention;

[0032] Figure 5 It is a schematic diagram of the cooperation between a heating plate and a crushing knife in an embodiment of the present invention;

[0033] Figure 6For Figure 5 The partial enlarged structural schematic diagram of part A;

[0034] Figure 7 The exploded structure diagram of the heating plate assembly in an embodiment of the present utility model.

[0035] Explanation of reference numerals: 10, machine base; 20, stirring cup; 21, cup body; 22, heating plate; 220, induction side wall; 221, bottom wall; 2211, exposed part; 2212, heat conduction part; 2213, shaft hole; 222, structural layer; 223, heat conduction layer; 224, heating layer; 23, crushing knife; 231, knife shaft; 24, motor; 241, upper end cover; 242, lower end cover; 243, motor main body; 30, coil; 40, magnetic conduction buckle; 41, magnetic strip; 42, upper edge; 43, lower edge; 50, bracket; 51, first convex edge; 52, second convex edge; 53, annular groove; 54, notch; 60, wireless signal transmission module; 61, wireless receiving module; 70, detection element; 80, bearing; 81, shaft seal. Specific embodiments

[0036] In order to more clearly illustrate the overall concept of the present utility model, the following will be described in detail by way of examples in conjunction with the drawings of the specification.

[0037] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below. It should be noted that, without conflict, the embodiments of the present utility model and the features in each embodiment can be combined with each other.

[0038] In addition, in the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0039] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "attachment", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature can 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 terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0041] As Figures 1-4 shown, in one embodiment of the present utility model, a food processor with reliable structure is provided, which includes a mixing cup 20 and a machine base 10. The mixing cup 20 includes a cup body 21, a heating plate 22 located at the bottom of the cup body 21, and a crushing knife 23 located inside the cup body 21. A motor 24 for driving the crushing knife 23 is provided inside the machine base 10. The heating plate 22 has a bottom wall 221 and an induction side wall 220 extending upward from the edge of the bottom wall 221. The motor 24 is a variable-frequency brushless motor located below the bottom wall 221 of the heating plate 22. As Figure 2 shown, the food processor further includes a coil 30 located inside the machine base 10 and surrounding the outer periphery of the induction side wall 220, and a plurality of magnetic conduction buckles 40 arranged at intervals along the circumferential direction of the coil 30. As Figure 3 shown, the magnetic conduction buckle 40 includes a magnetic strip 41 extending vertically and shielding the outside of the coil 30, and an upper retaining edge 42 and a lower retaining edge 43 connected to both ends of the magnetic strip 41. The upper retaining edge 42 and the lower retaining edge 43 respectively shield the upper end and the lower end of the coil 30, and the lower retaining edge 43 is blocked between the variable-frequency brushless motor and the coil 30.

[0042] Optionally, in this embodiment, as Figure 2 、 Figure 4As shown, the variable-frequency brushless motor includes an upper end cover 241, a lower end cover 242, and a motor main body 243. The upper end cover 241 and the lower end cover 242 enclose an installation cavity for accommodating the motor main body 243. The lower edge 43 is interposed between the upper end cover 241 and the coil 30. Equivalently, the lower edge and the upper end cover together form a double shielding effect between the coil and the motor body, further reducing the risk of interference between the motor magnetic field and the heating magnetic field and the risk of magnetic leakage of the coil.

[0043] A food processor with a reliable structure provided by this embodiment sets the heating plate 22 to have a bottom wall 221 and an induction side wall 220 extending upward from the edge of the bottom wall 221, and a coil 30 is arranged in the machine base 10 around the outer periphery of the induction side wall 220, so as to realize electromagnetic induction heating by the cooperation of the coil 30 and the induction side wall 220, eliminating the setting of a strong electrical coupler between the cup body 21 and the machine base 10, improving the use safety, facilitating the full-body water washing of the cup body 21, and being convenient to use. Moreover, the induction side wall 220 performs a surrounding three-dimensional heating on the liquid in the cup body 21, with high heating efficiency, enabling the ingredients to start crushing in the most scientific temperature range, efficiently releasing rich nutrients, and bringing a mellow and rich taste. By adopting a variable-frequency brushless motor, the variable-frequency brushless motor includes an upper end cover 241, a lower end cover 242, and a motor main body 243. The upper end cover 241 and the lower end cover 242 enclose an installation cavity for accommodating the motor main body 243, thereby wrapping the motor main body 243 to prevent the coil 30 of the motor 24 from being exposed. At the same time, the lower edge 43 is interposed between the upper end cover 241 and the coil 30. Therefore, the lower edge 43 and the upper end cover 241 layer by layer shield the magnetic field between the coil 30 and the motor 24 body, further reducing the risk of interference between the heating magnetic field of the coil 30 and the motor magnetic field, and the two do not affect each other, thereby improving the heating efficiency and the temperature rise of the motor 24.

[0044] The variable-frequency brushless motor is smaller in size compared to the traditional series-wound motor 24, and the coil 30 is hidden without protruding outward, thus avoiding interference between the motor magnetic field and the magnetic field of the coil for heating. Further, a plurality of magnetic conduction buckles 40 are arranged at intervals along the circumferential direction of the coil 30. The magnetic conduction buckle 40 includes a magnetic strip 41 extending vertically and shielding the outside of the coil 30, and an upper edge 42 and a lower edge 43 connected to both ends of the magnetic strip 41. The upper edge 42 and the lower edge 43 respectively shield the upper end and the lower end of the coil 30, and the lower edge 43 is blocked between the variable-frequency brushless motor and the coil 30. By using the magnetic conduction buckle 40 to shield the outside of the coil 30, the magnetic fields of the coil 30 upward, outward, and downward are shielded, and only the magnetic field cooperating with the induction side wall 220 inside is retained, thereby preventing the magnetic field of the coil 30 from leaking outward and achieving an improvement in heating efficiency. At the same time, since the lower edge 43 is blocked between the variable-frequency brushless motor and the coil 30, it can not only avoid the interference of the coil 30 on the motor magnetic field, avoid the situation of the motor 24 heating up, and improve the temperature rise of the motor 24; at the same time, it can avoid the influence of the motor magnetic field on the coil 30, ensure that the induction side wall 220 of the heating plate 22 can fully heat up, and improve the heating efficiency. Thus, the synchronous improvement of the heating efficiency and the temperature rise of the motor 24 is achieved.

[0045] Combined with Figure 1 and Figure 2 As shown, in a preferred embodiment, the mixing cup 20 includes a wireless signal transmission module 60, and a wireless receiving module 61 cooperating with the wireless signal transmission module 60 is provided in the base 10. The magnetic strip 41 is blocked between the coil 30 and the wireless receiving module 61, that is, the setting position of the wireless receiving module 61 is directly opposite to the position of the magnetic strip 41. More specifically, the wireless receiving module includes a first induction coil, the wireless signal transmission module includes a second induction coil, and a control board connected to the first induction coil is further provided in the base. The first induction coil generates electromagnetic waves after the control board is powered on, and the second induction coil generates current under the action of the electromagnetic waves to realize the power-on and signal transmission of the wireless signal transmission module.

[0046] More preferably, the mixing cup 20 further includes a detection element 70 connected to the wireless signal transmission module 60. The detection element 70 includes a temperature sensor, an anti-overflow component, and a water level sensor. As Figure 1 , Figure 2 , the detection element 70 is a temperature sensor. Of course, in fact, the detection element 70 can also be selected as a conductive part for lid closing detection. For example, an upper conductive part is provided on the cup lid, and a lower conductive part is provided on the cup body 21. Among them, the lower conductive part is connected to the wireless signal transmission module 60. When the cup lid is closed in place, the upper conductive part and the lower conductive part are signal-conducted to realize the detection of the cup lid being closed in place. Further, an anti-overflow electrode is provided on the cup lid, and the anti-overflow electrode is connected to the upper conductive part to realize the transmission of the anti-overflow signal.

[0047] In this embodiment, by adopting the wireless signal transmission module 60 and the wireless receiving module 61, reliable signal transmission is achieved, enabling the signal transmission between the stirring cup 20 and the base 10 without being connected through wires or couplers. This reduces the complexity of wiring, makes installation and use more convenient, facilitates the cleaning of the stirring cup 20, reduces the risk of failures caused by problems such as easy aging and breakage of wires in wire connections, improves the reliability of the whole machine and the stability of signal transmission. At the same time, eliminating wire connections improves the waterproof performance.

[0048] Intelligent pulping is achieved by setting the detection element 70. The detection element 70 is connected to the wireless signal transmission module 60, and signal transmission is realized by using the wireless signal transmission module 60 and the wireless receiving module 61. The structure is simple, and the signal transmission is stable and reliable. The detection element 70 is a temperature sensor to enable real-time monitoring of the temperature of the liquid in the stirring cup 20. Combined with the three-dimensional heating of the heating plate 22, precise temperature control and sufficient boiling of the liquid are achieved, improving the taste of soy milk.

[0049] If the detection element 70 is an anti-overflow component, overflow can be effectively avoided, making it worry-free to use; if the detection element 70 is a water level sensor, low water level detection can be realized, preventing dry burning. Applied to automatic water inlet models, it realizes active quantitative water inlet, is intelligent, liberates the user's hands, and improves the convenience of use.

[0050] The present utility model does not limit the fixing method of the coil 30 and the magnetic conduction buckle 40. For example, Figure 2 As shown, in a preferred embodiment, a bracket 50 for fixing the coil 30 is further provided in the base 10. An annular groove 53 for accommodating the coil 30 is provided on the outer side of the bracket 50. As Figure 2 shown, the bracket 50 has a first convex edge 51 and a second convex edge 52 arranged at intervals and in a ring shape. The annular groove 53 is formed between the first convex edge 51 and the second convex edge 52. The coil 30 is axially limited by the first convex edge 51 and the second convex edge 52. More specifically, a notch 54 for cooperating with the magnetic conduction buckle 40 is opened in the annular groove 53, and the magnetic conduction buckle 40 is fixed in the notch 54 to limit the coil 30.

[0051] By providing the bracket 50, the coil 30 can be fixed by being wound in the annular groove 53 on the outer side of the bracket 50. By providing the annular groove 53, the height position of the coil 30 is determined, avoiding the upward or downward movement of the coil 30 or installation errors, so that the coil 30 and the induction side wall 220 of the heating plate 22 can be accurately aligned, realizing electromagnetic heating with reliable heating.

[0052] By providing a notch 54 on the annular groove 53 and mating and fixing with the magnetic conduction buckle 40 through the notch 54, the limit fixing of the magnetic conduction buckle 40 is realized, preventing the magnetic conduction buckle 40 from loosening. Furthermore, the magnetic conduction buckle 40 is used to stably limit the coil 30 in the annular groove 53, preventing the radial displacement of the coil 30 and achieving reliable electromagnetic heating.

[0053] As Figures 5-7 shown, in a preferred embodiment of the present utility model, the induction sidewall 220 includes a structural layer 222 integrally connected to the bottom wall 221, a heat conduction layer 223 disposed outside the structural layer 222, and a heating layer 224 disposed outside the heat conduction layer 223. The eddy current effect generated by the heating layer 224 is stronger than that of the structural layer 222.

[0054] Optionally, the structural layer 222 is made of food-grade stainless steel, the heat conduction layer 223 is made of an aluminum layer, and the heating layer 224 is stainless steel with an eddy current effect stronger than that of the structural layer 222. For example, compared with the structural layer 222, the heating layer 224 uses stainless steel with a higher content of nickel and chromium, making its magnetic permeability higher, and generating stronger heat after the coil 30 is energized.

[0055] In this embodiment, the induction sidewall 220 includes a structural layer 222, a heat conduction layer 223, and a heating layer 224. At the same time, the eddy current effect generated by the heating layer 224 is stronger than that of the structural layer 222. The structural layer 222 enables the heating plate 22 itself to have good structural strength, realizing reliable fixation with the cup body 21. At the same time, the structural layer 222 can be separately selected as a food-grade material to ensure safety after contact with the liquid. The heat conduction layer 223 is used to achieve uniform and rapid heat conduction, uniformly and quickly transferring the heat generated after the heating layer 224 senses the magnetic field to the structural layer 222 and then to the liquid in the cup body 21, improving the heating efficiency, preventing local overheating and bottom burning problems, and facilitating accurate temperature detection of the liquid. Utilizing the characteristic that the heating layer 224 has a strong eddy current effect, the heating layer 224 quickly and efficiently generates heat under the magnetic field of the coil 30. The combination of the heating layer 224, the heat conduction layer 223, and the structural layer 222 realizes efficient heating and heat conduction.

[0056] As Figure 5 、 6 shown, preferably, the heat conduction layer 223 extends below the bottom wall 221. Optionally, the heating layer 224 can extend below the bottom wall 221 together with the heat conduction layer 223, or only the heat conduction layer 223 extends below the bottom wall 221. More preferably, the bottom wall 221 has a heat conduction portion 2212 covered by the heat conduction layer 223 and an exposed portion 2211 exposed outside the heat conduction layer at the center of the heat conduction portion. The exposed portion 2211 is provided with a shaft hole 2213 for the transmission connection between the crushing knife 23 and the motor 24. As Figure 5As shown, specifically, the exposed part 2211 arches upward to form an installation chamber for installing the bearing 80 on the lower side. The shaft hole 2213 is located at the top of the installation chamber. The cutter shaft 231 of the crushing cutter 23 is inserted through the shaft hole and cooperates with the bearing 80. The lower end of the cutter shaft 231 is detachably connected to the rotating shaft of the motor 24. Preferably, a shaft seal 81 is also provided between the cutter shaft 231 and the shaft hole.

[0057] By extending the heat-conducting layer 223 below the bottom wall 221, the induced heat of the laterally arranged heating layer 224 can be transferred to the bottom wall 221 through the heat-conducting layer 223, so that the liquid can be heated laterally and from bottom to top, realizing all-round three-dimensional heating, improving the heating efficiency, and achieving full utilization of heat.

[0058] In this embodiment, since the bottom wall 221 has a heat-conducting part covered by the heat-conducting layer 223 and an exposed part located at the center of the heat-conducting part and exposed outside the heat-conducting layer 223, while realizing all-round heating by means of the heat-conducting part, an exposed part not covered by the heat-conducting layer 223 is reserved at the center of the bottom wall 221, and reliable installation of components such as the cutter shaft, bearing, and shaft seal is achieved by means of the exposed part, preventing interference and friction between the cutter shaft and the heat-conducting layer 223, and the structure is reliable. By passing the cutter shaft of the crushing cutter 23 through the shaft hole and detachably connecting the lower end of the cutter shaft to the rotating shaft of the motor 24, it is convenient for the user to flexibly remove and clean the mixing cup 20, and the use is convenient.

[0059] In the present utility model, the parts not described can be realized by adopting or referring to the existing technologies.

[0060] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and the key points of each embodiment are the differences from other embodiments.

[0061] The above are only the embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the scope of the claims of the present utility model.

Claims

1. A food processor with reliable structure, comprising a mixing cup and a machine base, wherein the mixing cup comprises a cup body, a heating plate at the bottom of the cup body, and a crushing knife located in the cup body, and a motor for driving the crushing knife is arranged in the machine base, characterized in that: The heating plate has a bottom wall and an induction side wall extending upward from the edge of the bottom wall. The motor is a variable frequency brushless motor located below the bottom wall of the heating plate. The food processor also includes a coil located in the base and surrounding the outer periphery of the induction side wall and a plurality of magnetic buckles arranged at circumferential intervals along the coil. The magnetic buckles include a magnetic strip extending vertically and shielding the outside of the coil and an upper rib and a lower rib connected to both ends of the magnetic strip. The upper rib and the lower rib respectively shield the upper end and the lower end of the coil, and the lower rib separates the variable frequency brushless motor and the coil.

2. A food processing machine with reliable structure according to claim 1, characterized in that: The blending cup comprises a wireless signal transmission module, a wireless receiving module cooperating with the wireless signal transmission module is arranged in the base, and the magnetic strip is separated between the coil and the wireless receiving module.

3. A food processing machine with reliable structure according to claim 2, characterized in that: The blending cup further comprises a detection element connected to the wireless signal transmission module, wherein the detection element is a temperature sensor, an anti-overflow component or a water level sensor.

4. A food processing machine with reliable structure according to claim 1, characterized in that: A bracket for fixing the coil is also provided in the base, and an annular groove for accommodating the coil is provided on the outer side of the bracket.

5. A food processing machine with reliable structure according to claim 4, characterized in that: The annular groove is provided with a notch matched with the magnetic buckle, and the magnetic buckle is fixed in the notch to limit the coil.

6. A food processing machine with reliable structure according to claim 1, characterized in that: The induction side wall includes a structural layer connected to the bottom wall as a whole, a heat-conducting layer arranged outside the structural layer, and a heating layer arranged outside the heat-conducting layer. The eddy current effect generated by the heating layer is stronger than that of the structural layer.

7. A food processing machine with reliable structure according to claim 6, characterized in that: The heat conducting layer extends to below the bottom wall.

8. A structurally reliable food processing machine according to claim 7, characterized in that: The bottom wall comprises a heat-conducting portion covered by the heat-conducting layer and an exposed portion located at the center of the heat-conducting portion and exposed to the heat-conducting layer. The exposed portion is provided with an axial hole for transmission connection between the crushing knife and the motor.

9. A food processing machine with reliable structure according to claim 8, characterized in that: The exposed portion is arched upward from bottom to top to form an installation chamber with a bearing installed on the lower side, the shaft hole is located at the top of the installation chamber, the blade shaft of the crushing knife is installed in the shaft hole and cooperates with the bearing, and the lower end of the blade shaft is detachably connected to the rotating shaft of the motor.

10. A food processing machine with reliable structure according to claim 1, characterized in that: The variable frequency brushless motor comprises an upper end cover, a lower end cover and a motor body. The upper end cover and the lower end cover are enclosed to form a mounting cavity for accommodating the motor body. The lower rib is between the upper end cover and the coil.

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