Cup body assembly for food processor

Abstract

The utility model provides a cup body assembly for a food processor, which comprises a cup body provided with a processing cavity; the crushing device is separably arranged in the cup body, the crushing device comprises a crushing cutter and a cutter holder shell, an upper suction magnet is arranged in the cutter holder shell, and a lower suction magnet located below the upper suction magnet is arranged at the bottom of the cup body; the detection device is located below the upper attraction magnet and used for detecting signals of the lower attraction magnet when the smashing device is separated from the cup body and signals generated after vector magnetic fields of the upper attraction magnet and the lower attraction magnet are overlapped when the smashing device is placed in the cup body. The detection device is used for detecting whether the smashing device is placed in place at the cup bottom of the cup body or not, so that safe use of the food processor is ensured, and the situation that a smashing cutter seriously inclines to impact the inner wall of the cup body or slurry in the cup body splashes due to the fact that the smashing device is started under the condition that the smashing device is not installed in place is prevented.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of food processing machines, especially relates to a non-contact magnetic drive food processing machine. BACKGROUND

[0002] The existing food processing machines such as wall breaking machines, soybean milk machines and the like generally comprise a main machine and a cup body, the cup body is internally provided with a crushing knife driven by a motor, the crushing knife comprises a crushing blade and a knife shaft, the knife shaft passes through the bottom of the cup body and is connected with the motor to realize rotation of the crushing knife driven by the motor and crushing processing of food materials in the cup body. The crushing knife is fixed at the bottom of the cup body, and it is difficult to clean the crushing blade and the space below the blade in the cup body, resulting in inconvenient cleaning.

[0003] In order to solve the problem of cleaning the crushing knife, the industry has appeared a food processing machine with a detachable crushing knife assembly, and the complete cleaning of the crushing knife and the space at the bottom of the cup body is realized by detaching the crushing knife assembly. Since the knife shaft of the crushing knife and the output shaft of the motor still need to be in contact and transmission connection, the problems of inconvenient disassembly and assembly of the crushing knife and reduced installation alignment and sealing reliability caused by frequent disassembly and assembly of the crushing knife are still difficult to solve. In addition, whether the crushing knife needs to be disassembled and cleaned or not, there is a risk of sealing aging and liquid leakage damaging the motor at the connection between the crushing knife shaft and the cup body.

[0004] In order to completely solve the problems of difficult cleaning of the crushing knife and leakage caused by aging of the shaft seal at the connection between the crushing knife and the bottom of the cup, the patent with the application number CN201110155563.4 discloses an indirect transmission food processor, which comprises a container, a crushing knife arranged in the container, a motor, and a motor seat with the motor arranged therein. The food processor further comprises a driving coupling arranged on the power output shaft of the motor and a driven coupling connected with the crushing knife. The driving coupling and the driven coupling are non-contact transmission. The driven coupling is rotatably arranged in the container, and the driven coupling is arranged floatingly relative to the container and has a certain floating space in the axial direction, so that the driven coupling can be automatically adjusted when rotating. The non-contact transmission focuses on solving the problems of transmission noise, transmission wear, shaft seal failure leading to water leakage of the cup, and the problem that the blade is easy to cut the fingers when cleaning. The above patent also solves the problem that in the traditional wall breaking machine, the blade and the cup are relatively fixed, and when processing materials, the materials will be stuck between the crushing knife and the container, thereby causing the motor to be blocked, burned out, and the like. However, since the crushing knife is detachably connected relative to the container, when the user installs the crushing knife into the container, the local distance between the driving coupling and the driven coupling of the non-contact transmission becomes larger, the crushing knife is locally raised, and the problem of failure of the non-contact transmission is caused. In addition, there is a situation that the user first places the material in the cup and then installs the crushing knife. At this time, the material separates the bottom of the cup from the crushing knife, the interval distance increases, and the problem that the motor and the crushing knife cannot effectively transmit the torque through magnetic transmission is caused.

[0005] Therefore, when the user uses the food processor such as the wall breaking machine, the soybean milk machine and the like, since the crushing device and the cup bottom are separated by the granular material, the crushing device cannot be placed flat on the bottom of the cup, and the crushing device cannot be normally and smoothly rotated for processing the material through the magnetic drive, and even the safety risk of flying knife and splashing of the slurry is caused. This is a problem to be solved for the non-contact transmission food processor. Practical new type content

[0006] The utility model discloses a cup body assembly for food processor, in the scene of the crushing device being removable, solve the crushing device and the cup bottom between the existence of granular material when being put into the cup and causing the non-contact transmission to fail, the crushing device cannot crush the food material, and even cause the slurry to splash the use safety problem.

[0007] In order to solve the above technical problems, the utility model provides a cup body assembly for food processor, including cup body, have processing cavity, the device of smashing, the device of smashing is set up in cup body, the device of smashing includes the knife rest casing of smashing knife, be equipped with upper suction magnet in the knife rest casing, the cup body bottom is equipped with lower suction magnet below the upper suction magnet, detection device, be below the upper suction magnet, the detection device is used for detecting the signal of lower suction magnet when the device of smashing is separated with cup body, and when the device of smashing is placed in cup body the signal of upper suction magnet and lower suction magnet vector magnetic field superposition, for detecting whether the device of smashing is placed in place in the cup bottom of cup body.

[0008] Further, the detection device includes a plurality of linear Hall, the projection of the upper suction magnet and the lower suction magnet in the horizontal plane covers the projection of the linear Hall in the horizontal plane.

[0009] Further, the lower suction magnet is circumferentially provided with a plurality of, each lower suction magnet is correspondingly provided with at least one linear Hall.

[0010] Further, the detection device includes a Hall plate, and the linear Hall is arranged on the Hall plate.

[0011] Further, the bottom of the cup body is provided with a cup seat, and the lower suction magnet and the detection device are installed in the cup seat.

[0012] Further, the detection device is arranged below the lower suction magnet.

[0013] Further, the detection device is arranged between the upper suction magnet and the lower suction magnet.

[0014] Further, the upper suction magnet is annular or ring-like.

[0015] Further, the knife rest casing is provided with an upper transmission magnet, the main machine of the food processor is provided with a lower transmission magnet, and a magnetic separation ring is arranged between the detection device and the upper transmission magnet and / or the lower transmission magnet.

[0016] Further, the upper suction magnet is arranged on the outer periphery of the upper transmission magnet, the lower suction magnet and the lower transmission magnet are arranged below and above the upper suction magnet and the upper transmission magnet respectively, and the detection device is arranged on the outer side of the projection of the lower transmission magnet in the horizontal projection plane.

[0017] Further, the upper transmission magnet is annular, the upper suction magnet is arranged on the inner side of the upper transmission magnet, and the lower suction magnet and the lower transmission magnet are arranged below and above the upper suction magnet and the upper transmission magnet respectively.

[0018] Further, the lower suction magnet is an arc-shaped magnet or a point-shaped magnet, and the lower suction magnet is arranged in at least two and in a ring shape.

[0019] Further, the cup body is provided with a cup seat, the lower suction magnet and a radial sliding device are arranged in the cup seat, the radial sliding device drives the lower suction magnet to slide in a radial direction, and the lower suction magnet is transversely dislocated with the upper suction magnet, so that the crushing device is taken out of the cup body.

[0020] Further, the detection device is arranged on the main machine of the food processor and below the lower suction magnet.

[0021] Further, the lower suction magnet is dislocated with the lower transmission magnet in height.

[0022] Further, the upper transmission magnet and the lower transmission magnet are 4-9-pole magnets.

[0023] The food processor has the advantages that:

[0024] 1. The upper suction magnet is arranged in the cutter seat shell of the crushing device, and the lower suction magnet is arranged at the bottom of the cup body. When the crushing device is taken out of the cup body, the detection device can only detect the signal of the vector magnetic field of the lower suction magnet, and when the crushing device is placed into the cup body, the magnetic attraction force between the upper suction magnet and the lower suction magnet causes the upper and lower suction magnets to be attracted to each other, the detection device below the upper suction magnet can accurately detect the signal of the superposition of the vector magnetic fields of the upper and lower suction magnets, and whether the crushing device is placed flat at the bottom of the cup body is determined according to the detected signal.

[0025] The food processor detects the signal of the superposition of the vector magnetic fields of the upper and lower suction magnets through the detection device, determines whether the bottom surface of the cutter seat shell is placed flat on the cup bottom, and when the crushing device is separated from the cup bottom by the material such as soybeans, the signal of the superposition of the vector magnetic fields of the upper and lower suction magnets detected by the detection device changes, the crushing device is determined to be not placed flat according to the detected signal, the food processor controls the motor not to start, and prompts the user to correctly place the crushing device. The safety use of the food processor is ensured, the upper and lower suction magnets can prevent the crushing device from falling when the pulp is poured, and can prevent the crushing device from being started under the condition that the crushing device is not placed in place, so that the crushing knife is seriously tilted to impact the inner wall of the cup body or the pulp in the cup body is splashed.

[0026] 2. The detection device includes a linear Hall effect sensor. The projections of the upper and lower attracting magnets on the horizontal plane both cover the projection of the linear Hall effect sensor on the horizontal plane. Since the magnetic force between magnets is greatly affected by distance, the linear Hall effect sensor is closer to the upper and lower attracting magnets in the vertical direction, enabling more accurate detection of the signals from the upper and lower attracting magnets. This allows for precise detection of whether the crushing device is placed flat and in the correct position. If the linear Hall effect sensor is not within the projection range of the upper and lower attracting magnets on the horizontal plane, the straight-line distance between the linear Hall effect sensor and the attracting magnets increases, resulting in a larger deviation in the sensed signal value and making it more susceptible to interference from the upper and lower drive magnets.

[0027] 3. Multiple linear Hall effect sensors are provided, with multiple lower attraction magnets arranged circumferentially. Each lower attraction magnet corresponds to at least one linear Hall effect sensor. When one or more hard particles, such as soybeans, are placed between the bottom surface of the pulverizer's blade housing and the bottom of the cup, at least one linear Hall effect sensor will detect an anomaly in the superposition of the vector magnetic fields of the upper and lower attraction magnets. This anomaly is fed back to the food processing machine control module, identifying that the bottom surface of the pulverizer's blade housing is not placed flat and that there is an uneven gap between it and the bottom of the cup. Preferably, the lower attraction magnet is arranged in an arc shape, with linear Hall effect sensors at both ends of each arc-shaped lower attraction magnet. This allows for more accurate detection of whether the pulverizer is placed stably on the bottom of the cup, regardless of whether there is a single soybean particle, two soybean particles, or multiple particles spread flat between the bottom surface of the pulverizer's blade housing and the bottom of the cup.

[0028] 4. The detection device includes a Hall plate with linear Hall effect sensors disposed on it. The Hall plate is positioned outside the lower drive magnet, thus forming a magnetic drive space inside the Hall plate. A suction space and a detection space for the pulverizing device are formed along the height direction of the Hall plate outside the magnetic drive space. This spatial structure makes the radial dimensions of the cup more reasonable and compact, and the outer perimeter of the pulverizing device longer. The detection device and corresponding upper and lower suction magnets are positioned outside the upper and lower drive magnets. When the pulverizing device is tilted at a certain angle, the linear Hall effect sensors on the Hall plate can accurately and sensitively sense differences in signal changes. By comparing with a reference value, the flatness of the pulverizing device relative to the bottom of the cup can be quickly identified and determined.

[0029] 5. The cup base is equipped with a cup holder, and the lower attracting magnet and the detection device are both installed inside the cup holder. This allows the detection device to be as close as possible to the upper and lower attracting magnets. The more obvious the change in the superposition of the vector magnetic fields of the upper and lower attracting magnets that the detection device can detect, the more accurate the detection of the flatness of the crushing device placed on the bottom of the cup will be. This fully avoids problems such as the bottom surface of the crushing device tilting, lifting, large gaps between the bottom surface of the crushing device blade holder housing and the bottom of the cup, unevenness, etc., which can lead to the crushing blade flying, slurry splashing, and magnetic drive failure.

[0030] 6. The upper drive magnet is ring-shaped, and the upper attraction magnet is located inside the upper drive magnet. Spatially, this is equivalent to the magnetic drive space formed by the upper and lower drive magnets of the food processor being outside the attraction detection space. The advantage of this arrangement is that the detection space is surrounded by the drive magnet from the outside, which has a relatively small impact on the detection device. Furthermore, the upper and lower drive magnets have sufficient magnetic attraction drive area to ensure reliable torque transmission between the drive magnets. The upper attraction magnet located inside the upper drive magnet, the lower attraction magnet located inside the lower drive magnet, and the detection device can ensure the flatness of the bottom surface of the pulverizing device blade holder housing relative to the bottom of the cup on the basis of high torque magnetic transmission. This prevents the blade holder housing from being separated from the bottom of the cup by materials such as soybeans, which would increase the distance between the upper and lower drive magnets and cause a sharp decrease in magnetic force, thus affecting the normal driving of the pulverizing blade.

[0031] 7. The upper attracting magnet is ring-shaped or near-ring-shaped, so that the upper attracting magnet is continuously distributed in the circumferential direction. No matter what angle the user installs the crushing device at, and no matter how the crushing device is driven to any circumferential angle position during the operation of the food processor, the detection device can detect the magnetic field signal of the upper attracting magnet. By appropriately superimposing the magnetic field of the lower attracting magnet, it can accurately detect whether the bottom of the crushing device is installed flat on the bottom of the cup, improving the user's experience in installing the crushing device, as well as the stability and reliability of the detection device.

[0032] 8. The lower attracting magnet is an arc-shaped magnet or a point magnet, allowing it to easily and accurately align with the upper attracting magnet in a ring-shaped distribution. When the crushing device is placed at the bottom of the cup, the signal of the vector magnetic field superimposed on the upper and lower attracting magnets in the vertical direction can be detected by the detection device. When there is no material stuck between the bottom surface of the crushing device and the bottom of the cup, the signals detected by multiple linear Hall effect sensors tend to be consistent. When material gets stuck between the bottom surface of the crushing device and the bottom of the cup, the distance between the upper and lower attracting magnets at the location where the material is stuck increases, the superimposed vector magnetic field weakens, and at least one of the multiple linear Hall effect sensors detects an abnormal signal, thus determining that the crushing device is not completely placed flat and in the correct position.

[0033] 9. The cup seat is further provided with radial sliding device for driving the lower suction magnet radially sliding, and the upper suction magnet is transversely dislocated with the lower suction magnet in the state of the cup body and the main machine, the transversely dislocation of the upper suction magnet and the lower suction magnet greatly weakens the magnetic force, so that the user can easily take out the crushing device from the cup body.

[0034] 10. The detection device can also be installed on the main machine, whether the user installs the crushing device first and then installs the cup body on the main machine, or installs the cup body assembly on the main machine first and then installs the crushing device, which can effectively detect the flatness of the bottom surface of the crushing device relative to the cup bottom, ensure that the crushing device can be placed correctly, and the bottom surface of the knife seat shell is as close as possible to the cup bottom to ensure strong torque transmission. When the crushing device cannot be placed flat on the cup bottom, the control module can prevent the food processor motor from starting and timely remind the user to clean the cup bottom foreign matter and reposition the crushing device.

[0035] 11. The upper transmission magnet and the lower transmission magnet are preferably 4-9 pairs of pole magnets, and the upper transmission magnet and the lower transmission magnet are circular or annular, and the N magnetic pole and the S magnetic pole are alternately distributed in the circumferential direction, so that the upper transmission magnet is driven to rotate under the condition that the repulsive force and the attractive force of the opposite poles exist alternately when the lower transmission magnet is driven to rotate by the motor. The upper transmission magnet of a single magnetic pole and the lower transmission magnet of a single magnetic pole opposite to it constitute a pair of pole magnets, the more the magnetic force of the magnet, the more convenient the installation and positioning, but the cost is higher and the assembly of the transmission magnet as a whole is more complex. The less the magnetic force of the magnet, the more difficult the user to install and position, and the production and assembly are relatively simple. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art without creating laborious work.

[0037] Figure 1 The food processor whole machine structure schematic diagram of the present application is shown.

[0038] Figure 2 The transmission magnet and suction magnet schematic diagram of the food processor of the present application is shown.

[0039] Figure 3 The magnetic attraction force of the transmission magnet of the food processor of the present application changes with distance.

[0040] Figure 4 The food processor Hall detection circuit schematic diagram of the present application is shown.

[0041] Figure 5The utility model discloses a food processor smashing device unevenly placed schematic diagram.

[0042] Figure 6 The utility model discloses a food processor smashing device flatly put into the cup bottom hall detection signal AD value change schematic diagram.

[0043] Figure 7 The utility model discloses a food processor smashing device and cup bottom between the pad mung bean hall detection signal AD value change schematic diagram.

[0044] Figure 8 The utility model discloses a food processor smashing device and cup bottom between the pad mung bean hall detection signal AD value change schematic diagram.

[0045] Figure 9 The utility model discloses a food processor transmission magnet, attract magnet decomposition structure schematic diagram.

[0046] Figure 10 The utility model discloses a food processor attract magnet structure schematic diagram.

[0047] Figure 11a The utility model discloses a food processor transmission magnet and attract magnet structure schematic diagram.

[0048] Figure 11b The utility model discloses a food processor transmission magnet and attract magnet structure schematic diagram.

[0049] Figure 12 The utility model discloses a food processor linear hall is located below attract magnet below structure schematic diagram.

[0050] Figure 13 The utility model discloses a food processor sliding device structure schematic diagram.

[0051] Figure 14 The utility model discloses a food processor linear hall is located above attract magnet above structure schematic diagram.

[0052] Figure 15a The utility model discloses a food processor attract magnet is located in transmission magnet inside structure schematic diagram.

[0053] Figure 15b The utility model discloses a food processor attract magnet is located in transmission magnet inside structure schematic diagram.

[0054] Figure 16 The utility model discloses a food processor host computer installation part structure schematic diagram.

[0055] The components shown in the diagram are named as follows: 100, Main unit; 101, Lower drive magnet; 102, Mounting part; 200, Cup body assembly; 201, Cup body; 202, Cup bottom; 203, Lower attracting magnet; 204, Cup seat; 205, Heating element; 206, Radial sliding device; 207, Sliding bracket; 208, Connecting rod bracket; 209, Connecting rod; 210, First guide surface; 211, Second guide surface; 212, Pushing surface; 213, Arc segment; 214, Guide segment; 300, Crushing device; 301, Crushing blade; 302, Blade holder housing; 303, Upper drive magnet; 304, Upper attracting magnet; 305, Magnetic isolation ring; 306, Blade shaft; 400, Detection device; 401, Linear Hall effect sensor; 402, Hall plate; 500, Material; 600, N pole; 700, S pole. Detailed Implementation

[0056] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0057] like Figures 1 to 16 As shown, this utility model provides a food processing machine, including a main unit 100, a cup assembly 200, a crushing device 300, and a detection device 400. The main unit includes a lower drive magnet 101 driven by a motor. The cup assembly includes a cup body 201 and a cup lid (not shown). The cup assembly is installed in the main unit 100. The crushing device is detachably disposed within the cup body 201. The crushing device includes a crushing blade 301, a blade holder housing 302, and an upper drive magnet 303 disposed within the blade holder housing. The motor achieves non-contact torque transmission between the upper drive magnet 303 and the lower drive magnet 101, thereby driving the crushing blade to rotate and process the food inside the cup. Therefore, the bottom of the cup body is a continuous surface without perforations or shaft seals, completely preventing liquid leakage from the cup body down to the motor and causing damage to the food processing machine.

[0058] The cutter seat shell 302 is also provided with an upper suction magnet 304, and the cup bottom is provided with a lower suction magnet 203 below the upper suction magnet 304. The detection device 400 is located below the upper suction magnet, and the detection device detects the signal of the lower suction magnet and the signal of the superposition of the vector magnetic field of the upper and lower suction magnets, so as to detect whether the crushing device 300 is placed flat on the bottom of the cup. The placement in the utility model refers to that the crushing device is installed in the cup, the bottom surface of the crushing device cooperates stably with the cup bottom, and there is no material isolation in the middle, nor is there abnormal material blocking. When the crushing device is placed in position, the bottom surface of the crushing device tends to be horizontal as a whole, and tends to be consistent with the overall horizontal state of the cup bottom. When the crushing device 300 is taken out of the cup, the detection device 400 can only detect the signal of the vector magnetic field of the lower suction magnet, and when the crushing device is placed in the cup, the magnetic attraction between the upper and lower suction magnets makes the upper and lower suction magnets attract each other, and the detection device located below the upper suction magnet can accurately detect the signal of the superposition of the vector magnetic field of the upper and lower suction magnets, so as to determine whether the crushing device is placed flat on the bottom of the cup according to the detection signal after superposition. When the crushing device and the cup bottom are separated by soybeans and other materials, the signal of the superposition of the vector magnetic field of the upper and lower suction magnets detected by the detection device changes, and according to the detected signal, it is judged that the crushing device is not placed flat, the food processor control module controls the motor not to start, and prompts the user to place the crushing device correctly. Ensure the safe use of the food processor, prevent the crushing device 300 from starting in the case of not being placed in position, and cause the crushing knife to be severely tilted and hit the inner wall of the cup or the slurry in the cup to splash.

[0059] As Figure 3As shown, there is a correlation between the magnetic attraction between the upper transmission magnet 303 and the lower transmission magnet 101 and the distance, and the magnetic attraction decreases exponentially with the increase of the distance. Therefore, when the bottom surface of the crushing device is clamped with solid materials such as hard-textured soybeans, black beans or rice, or the user first puts the materials and then places the crushing device in the cup, a gap will appear between the bottom surface of the crushing device seat shell 302 and the upper surface of the cup bottom, which will increase or locally increase the distance between the upper transmission magnet and the lower transmission magnet, and the crushing knife will tilt. At this time, the transmission torque loss between the crushing knife and the motor is large and the transmission is unstable, the crushing knife tilts, which causes the slurry to splash during rotation, and the magnetic drive abnormal transmission noise increases. In addition, too much material between the crushing device and the cup bottom will cause the magnetic transmission to directly fail, and the machine will appear abnormal. The detection device 400 can detect whether the crushing device is installed flat and in place as soon as the food processor is powered on, so as to avoid the above problems and fully ensure the safety of the user and the use experience.

[0060] Embodiment one

[0061] As Figures 1 to 13As shown, the embodiment provides a food processor, which comprises a main machine 100, a cup assembly 200, a crushing device 300 and a detection device 400. The main machine is further provided with a control module electrically connected with the detection device. The main machine comprises a lower transmission magnet 101 driven by a motor. The cup assembly comprises a cup 201 and a cup cover (not shown in the figure). The outer wall of the cup is provided with a heating element 205, which is preferably a heating tube in the embodiment. The cup assembly is installed on the main machine. The crushing device is detachably arranged in the cup. The crushing device 300 comprises a crushing knife 301, a knife seat shell 302 and an upper transmission magnet 303 arranged in the knife seat shell. Specifically, the upper transmission magnet is connected with the crushing knife through a knife shaft. The upper transmission magnet 303 rotates and drives the crushing knife 301 to rotate synchronously. The knife seat shell 302 is further provided with an upper suction magnet 304. The bottom of the cup is provided with a lower suction magnet 203 below the upper suction magnet. After the crushing device 300 is placed in position, the lower transmission magnet is arranged directly below the upper transmission magnet, so that the upper transmission magnet and the lower transmission magnet are close enough to utilize the magnetic attraction force to the greatest extent to achieve strong torque transmission. As a preferred, the upper transmission magnet is circular and the N and S poles are alternately distributed in the circumferential direction. The upper transmission magnet is fixedly arranged on a metal transmission disc body. The lower end of the transmission disc body is fixedly connected with a knife shaft 306. The upper end of the knife shaft 306 is fixedly provided with the crushing knife 301. The detection device is below the upper suction magnet. As a preferred in the embodiment, the detection device is arranged below the upper suction magnet and the lower suction magnet. When the crushing device 300 is installed in the cup, the detection device 400 is below the upper suction magnet 304 and the lower suction magnet 203 from top to bottom. The magnetic induction lines of the upper suction magnet and the lower suction magnet pass through the detection points of the detection device. The detection device detects the signal of the lower suction magnet passing through the detection points of the detection device and the signal after the vector magnetic field of the upper suction magnet and the lower suction magnet is superimposed, to detect whether the crushing device is placed in position at the bottom of the cup. The detection device 400 comprises a plurality of detection points, which are distributed in the circumferential direction. Since the upper transmission magnet and the lower transmission magnet cooperate when transmission, the radial position of the crushing device at the bottom of the cup is relatively fixed. The crushing device 300 has a free placement position in the circumferential direction. No matter how the crushing device is placed in the circumferential direction, each detection point below the upper suction magnet and the lower suction magnet can accurately detect the signal after the vector magnetic field of the upper and lower suction magnets is superimposed. When the crushing device is not installed, the magnetic field signal of the lower suction magnet.

[0062] As a preferred, the detection device 400 comprises a plurality of linear Hall 401, which are detection points of the detection device for detecting the magnetic field signals of the upper suction magnet and the lower suction magnet. The linear Hall generates a deflection voltage according to the magnetic field of the suction magnet, to realize the conversion of the magnetic field signal of the suction magnet to a voltage signal. As shown in the figure, the linear Hall is arranged in the detection device.Figure 4 As shown, the single linear Hall includes a +5V power pin (VDD pin), an output pin (OUT pin), and a ground pin (GND pin). A first capacitor C1 is arranged between the output pin and the ground pin. In this embodiment, the upper attracting magnet 304 is arranged as an N-pole, and the lower attracting magnet 203 is arranged as an S-pole. When the crushing device is separated from the cup body, the S-pole magnetic field of the lower attracting magnet passes through the linear Hall, and the voltage varies between 0 and 2.5V with the change of the magnetic field. The stronger the magnetic field, the smaller the voltage value, and the weaker the magnetic field, the larger the voltage value. When the crushing device is placed at the bottom of the cup, the N-pole magnetic field of the upper attracting magnet passes through the linear Hall, and the voltage varies between 2.5 and 5V with the change of the magnetic field. The stronger the magnetic field, the larger the voltage value, and the weaker the magnetic field, the smaller the voltage value. The food processor control module performs AD conversion according to the voltage value signal, and converts the voltage of 0-5V to 0-4096.

[0063] When the crushing device 300 is installed at the bottom 202 of the cup, the projections of the upper attracting magnet 304 and the lower attracting magnet 203 on the horizontal plane cover the projection of the linear Hall on the horizontal plane, so that the upper attracting magnet, the lower attracting magnet and the linear Hall 401 are more gathered in the vertical direction, so that the magnetic induction lines passing through the linear Hall are more concentrated. When the magnetic induction lines of the upper attracting magnet pass through the corresponding linear Hall below, the change of the magnetic field is more obvious, and the linear Hall can accurately detect the change amplitude of the signal. Since the magnetic force between the magnets is greatly affected by the distance, the linear Hall 401 is closer to the upper attracting magnet and the lower attracting magnet in the vertical direction, and can more accurately detect the signals of the upper attracting magnet and the lower attracting magnet, so as to accurately detect whether the crushing device is placed in place. If the linear Hall is not within the projection range of the upper and lower attracting magnets on the horizontal plane, the linear distance between the linear Hall and the attracting magnet increases, the signal value deviation is large, and it is easy to be affected by the upper driving magnet and the lower driving magnet.

[0064] The linear Hall 401 is provided in plurality, and the lower suction magnet 203 is provided in plurality circumferentially, and each lower suction magnet 203 is provided with at least one linear Hall 401. The plurality of linear Halls 401 are distributed circumferentially, when the bottom surface of the cutter seat shell 302 of the crushing device and the cup bottom 202 are padded by one or more hard particles such as soybeans, at least one linear Hall can sense that the vector magnetic field superposition of the upper suction magnet 304 and the lower suction magnet 203 at the position of the linear Hall is abnormal, and feedback to the food processor control module, to identify that the bottom surface of the cutter seat shell of the crushing device is not placed flat, and there is a situation of uneven gap between the cup bottom. The signal anomaly is that the linear Hall has a significant abnormal fluctuation compared with the reference signal value at the position when the crushing device is placed flat. Preferably, the distance of the linear Hall from the center of the cutter shaft is R, the minimum distance of the upper suction magnet and the lower suction magnet from the center axis of the cutter shaft is A, and the maximum distance from the center axis of the cutter shaft is B, A < R < B is set, so that the linear Hall can accurately detect the change of the magnetic field of the suction magnet.

[0065] As a preferred, the lower suction magnet 203 is provided in arc segments, and each arc segment of the lower suction magnet is provided with a linear Hall 401 at both ends, no matter whether there is a single particle of soybean food material between the bottom surface of the cutter seat shell 302 of the crushing device and the cup bottom 202, or two soybean food materials, or multiple materials are laid flat between the cutter seat shell bottom and the cup bottom, the signal strength and change of the vector magnetic field superposition of the upper suction magnet 304 and the lower suction magnet 203 can be more accurately detected to detect whether the crushing device 300 is placed stably on the cup bottom. Figure 6 As shown, taking the detection device including three linear Halls as an example, the A area represents the AD values of the three linear Halls measured by the external detection device under the condition that the crushing device is not placed, the cup is not placed, and the crushing knife does not rotate. The B area represents the AD values of the three linear Halls detected under the condition that the crushing device is not placed, only the cup is placed on the main machine, and the crushing knife does not rotate. The C area represents the AD values of the three linear Halls detected under the condition that the crushing device is not placed, only the cup is placed on the main machine, and the crushing knife is driven to rotate by the motor. The D area represents the change of the AD values of the three linear Halls detected under the condition that the cup is placed on the main machine, the crushing device is flatly installed on the cup bottom of the cup, and there is no material gap or material jamming between the cup bottom and the crushing device, and the crushing knife does not rotate. The E area represents the AD values of the three linear Halls detected under the condition that the crushing device is flatly installed on the cup bottom of the cup, the cup is placed on the main machine, and the crushing knife is driven to rotate by the motor.

[0066] As shown in A area, B area, C area, when the pulverizing device is not placed, the S-pole magnetic field of the lower suction magnet passes through the lower linear hall, and the AD values of the three linear halls are respectively around 1300, 1170 and 1150. As shown in C area, when the motor drives the lower transmission magnet to rotate, the magnetic field of the lower transmission magnet interferes with the detection of the linear hall, but the interference value is within 30 AD values, the interference is limited and controllable. As shown in D area and E area, when the pulverizing device is placed flat on the cup bottom and there is no food material between the bottom surface of the knife seat shell and the cup bottom, the magnetic field of the upper suction magnet and the lower suction magnet is superimposed, so that the magnetic field passing through the linear hall increases, and the AD values of the three linear halls are respectively changed from 1300 to 1050, from 1170 to 800 and from 1150 to 800. Moreover, when the upper suction magnet and the lower suction magnet are attracted, the control module controls the motor to drive the lower transmission magnet to rotate and drive the upper transmission magnet and the pulverizing knife of the pulverizing device to rotate, at this time, the signal interference of the upper transmission magnet and the lower transmission magnet on the linear hall is further weakened, and is reduced to within 15 AD values, which does not affect the signal detection of the linear hall on the suction magnet.

[0067] As shown in Figure 7 The cup assembly is installed on the main machine, and the pulverizing device 300 is installed in the cup 201. Taking soybeans as an example, the diameter of the material 500 is about 4.5 mm, which is equivalent to being able to raise or completely raise the bottom surface of the pulverizing device knife seat shell 302 by 4.5 mm. The soybeans are placed on the cup bottom 202 to raise the pulverizing device 300 and detect the signal value of the linear hall. Among them, the F area represents that three points between the lower part of the pulverizing device 300 and the cup bottom 202 are raised by three soybeans, the G area represents that two points between the lower part of the pulverizing device and the cup bottom are raised by two soybeans, the H area represents that one point between the lower part of the pulverizing device and the cup bottom is raised by one soybean, and the I area represents the AD values of the three linear halls when the pulverizing device is placed flat and there is no material between the cup bottom and the bottom surface of the knife seat shell. By comparing and analyzing, the AD values of the three linear halls in the F area, the G area and the H area are raised to different degrees, and the AD values of the three linear halls are significantly different from the AD values of the three linear halls in the I area. The value of each linear hall in the I area is significantly lower than the AD value of each linear hall when the pulverizing device is raised. If the AD value in the I area is taken as the reference value, the AD values of the three linear halls in the F area, the G area and the H area with different points and quantities of raising will change abnormally, and can be accurately detected and recognized. By setting different quantities of soybeans between the knife seat shell of the pulverizing device and the cup bottom to raise, specifically including a single soybean to raise a single point of the bottom surface of the knife seat shell, two soybeans to raise two points of the bottom surface of the knife seat shell, and multiple soybeans to raise the entire plane of the bottom surface of the knife seat shell, the detection signal of the linear hall can still be obviously distinguished relative to the normal detection signal of each linear hall when the pulverizing device is placed flat.

[0068] As shown in Figure 8 Another group of tests for different material heightening, the material 500 used for heightening the crushing device is mung bean with smaller granularity. The J area represents the AD value detected by the three linear Hall when the crushing device 300 is placed horizontally and flat on the bottom of the cup. The K area and the L area represent the difference in AD value detected by the three linear Hall when the bottom of the crushing device is single-sidedly heightened by a mung bean, and when the mung beans are flatly laid between the bottom of the crushing device and the bottom of the cup. By comparing the K area and the L area, the AD value detected by each linear Hall changes significantly relative to the J area, and the linear Hall can accurately detect whether there is a mung bean separating the bottom of the crushing device from the bottom of the cup. When the bottom of the crushing device is separated from the bottom of the cup by a mung bean, the distance between the upper attracting magnet 304 and the lower attracting magnet 203 changes relatively small compared to the distance when the bottom of the crushing device is separated from the bottom of the cup by a soybean. The linear Hall can still correctly identify and distinguish the changed signal relative to the baseline signal detected when the crushing device is placed horizontally and flat, thereby feeding back to the control module and identifying the abnormal state of the placement of the crushing device.

[0069] Preferably, the surface magnetic intensity of the upper transmission magnet 303 and the lower transmission magnet 101 is 475GS-750GS, and the preferred value in the embodiment is 500GS, so as to satisfy the reliable transmission of torque and the stable operation of the crushing knife. The surface magnetic intensity of the upper attracting magnet and the lower attracting magnet is 267GS-386GS, so as to satisfy the effective identification of the linear Hall 401 when the crushing device 300 is in the separated state and the placed state. In addition, the crushing device can be reliably kept at the bottom of the cup when the cup is separated from the main machine for pouring, thereby avoiding falling when pouring.

[0070] As shown in Figure 9 The detection device 400 includes a Hall plate 402, the linear Hall is arranged on the Hall plate, and the Hall plate is arranged on the outer side of the lower transmission magnet, thereby forming a magnetic transmission space on the inner side of the Hall plate 402, and forming an attracting space and a detection space of the crushing device on the height direction of the outer side of the Hall plate outside the magnetic transmission space. Thus, in terms of space structure, the radial dimension of the cup is more reasonable and compact, the outer circumference of the crushing device is longer, the detection device and the corresponding upper attracting magnet and lower attracting magnet are arranged on the outer side of the upper transmission magnet and the lower transmission magnet, and when the crushing device is inclined at a certain angle, the height change of the area away from the center is larger than the height change of the area close to the center. Therefore, the linear Hall on the outer side of the lower transmission magnet can accurately and sensitively sense the difference in signal change, thereby quickly identifying and determining the installation flatness of the crushing device relative to the bottom of the cup by comparing with the reference value.

[0071] As shown in Figure 9 and Figure 10As shown, the upper suction magnet 304 is annular or ring-like, preferably continuous annular, so that the upper suction magnet 304 is continuously distributed in the circumferential direction, no matter how the user installs the crushing device 300, and no matter how the crushing device is driven to rotate to any angular position in the circumferential direction during the operation of the food processor, the detection device can detect the magnetic field signal of the upper suction magnet, and through the appropriate superposition of the magnetic field of the lower suction magnet, accurately detect whether the bottom of the crushing device is flatly installed to the bottom of the cup, improve the user's installation experience of the crushing device, and the stability and reliability of the detection device.

[0072] As preferred, the upper transmission magnet 303 and the lower transmission magnet 101 are disc-shaped on the inner side, and the upper suction magnet 304 and the lower suction magnet 203 are annular or ring-like or arc-shaped segments on the radial outer side of the upper transmission magnet and the lower transmission magnet. In this embodiment, specifically, the upper suction magnet 304 is arranged on the outer circumferential side of the upper transmission magnet, the lower suction magnet 203 and the lower transmission magnet 101 are arranged in a one-to-one correspondence with the upper suction magnet and the upper transmission magnet, respectively, and the detection device 400 is arranged on the outer side of the projection of the lower transmission magnet in the horizontal projection plane. The lower suction magnet is an arc-shaped magnet or a point-shaped magnet, and at least two lower suction magnets are arranged in a ring shape, so that the lower suction magnet can be conveniently and accurately matched with the upper suction magnet in a one-to-one correspondence and arranged in a ring shape. When the crushing device is placed on the cup bottom, the signal of the vector magnetic field superimposed by the upper suction magnet 304 and the lower suction magnet 203 in the vertical direction can be detected by the detection device. When there is no material clamped between the bottom surface of the crushing device 300 and the cup bottom 202, the signals detected by the plurality of linear Hall sensors 401 tend to approach the reference value of each linear Hall sensor. When the material is clamped between the bottom surface of the crushing device and the cup bottom, the distance between the upper suction magnet and the lower suction magnet at the clamped material position increases, the superimposed vector magnetic field becomes weaker, and at least one of the plurality of linear Hall sensors detects an abnormal signal, so as to determine that the crushing device is not completely placed flat in place. The detection device is arranged below the lower suction magnet. Specifically, as shown in the figure, the lower suction magnet 203 is preferably provided with two arc-shaped segments, and the Hall plate 402 is provided with two arc-shaped segments and matched with the shape of the lower suction magnet, arranged directly below the lower suction magnet. Each Hall plate is provided with two linear Hall sensors, which are arranged at the two ends of the Hall plate and closer to the two poles of the arc-shaped lower suction magnet, so that the detection device includes four linear Hall sensors. Figure 9 As shown, the lower suction magnet 203 is preferably provided with two arc-shaped segments, and the Hall plate 402 is provided with two arc-shaped segments and matched with the shape of the lower suction magnet, arranged directly below the lower suction magnet. Each Hall plate is provided with two linear Hall sensors, which are arranged at the two ends of the Hall plate and closer to the two poles of the arc-shaped lower suction magnet, so that the detection device includes four linear Hall sensors.

[0073] The cup body 201 is preferably detachably arranged relative to the main machine. Specifically, the cup body is provided with a cup seat 204, and the cup body is detachably arranged on the main machine 100 through the cup seat 204. The lower suction magnet 203 and the detection device 400 are arranged in the cup seat, so that the detection device 400 is maximally close to the upper suction magnet 304 and the lower suction magnet 203. The more obvious the change of the superposition of the vector magnetic field of the upper suction magnet and the lower suction magnet that can be detected by the detection device 400, the more accurate the detection of the flatness of the cup bottom on which the crushing device is placed. The problems such as the crushing device bottom being tilted, raised, having a large gap and being uneven with the cup bottom, the crushing knife flying, the slurry splashing, and the magnetic drive being invalid due to the material being stuck between the bottom surface of the crushing device knife seat shell and the cup bottom are avoided.

[0074] As shown in Figure 11a and Figure 11b , the upper transmission magnet 303 and the lower transmission magnet 101 are preferably 4-9-pole magnets. The upper transmission magnet 303 and the lower transmission magnet 101 are circular or annular, and the circumferential direction is alternately distributed with N poles 600 and S poles 700, so that the upper transmission magnet is driven to rotate under the condition that the attractive force and the repulsive force of the opposite poles exist alternately when the lower transmission magnet is driven to rotate by the motor. The upper transmission magnet of a single magnetic pole and the lower transmission magnet opposite to the single magnetic pole constitute a pair of pole magnets. The more the number of magnetic poles of the magnet, the more convenient the installation and alignment, but the cost is higher and the assembly of the whole transmission magnet is more complex. The fewer the number of magnetic poles of the magnet, the more difficult the installation and alignment for the user, and the production and assembly are relatively simple.

[0075] The upper transmission magnet and the lower transmission magnet are preferably 6-pole magnets. The magnetic properties of the similar magnets are opposite, and when the user installs the crushing device in the cup body, the magnetic property of the transmission magnet closest to the linear Hall is random, and the magnetic field detected by the linear Hall is also in a random state. In the embodiment, the linear Hall is arranged below the lower transmission magnet, as shown in Figure 12 When the crushing device 300 is placed in the cup body, the linear Hall detects the change of the basic magnetic field of the lower suction magnet to the superposition of the vector magnetic field between the upper suction magnet 304 and the lower suction magnet 203. The approximate relationship between the size of the magnetic field and the distance is B(r)≈(μ0 / 4π)×(2m / r 3), wherein B(r) is the magnitude of the magnetic field at the detection point, μ0 is the vacuum permeability, m is the magnetic moment of the magnet, is a vector related to the strength and direction of the magnet, and r is the distance from the pole to the test point. The strength of the magnetic field is inversely proportional to the cube of the distance from the detection point. The distance between the linear Hall distance transmission magnet and the attraction magnet is much greater than the distance between the linear Hall distance transmission magnet and the attraction magnet, so the magnetic field of the linear Hall distance transmission magnet detected at the position of the linear Hall is much smaller than the magnetic field of the attraction magnet. Moreover, the upper attraction magnet 304 and the lower attraction magnet 203 are respectively attracted to or repelled from the adjacent upper transmission magnet and lower transmission magnet, thereby closing the magnetic lines of force of the transmission magnet, which can further weaken the influence of the transmission magnet. For the food processor with the detachable cup and main machine, the upper attraction magnet and the lower attraction magnet are functionally reused, accurately detecting whether the crushing device is placed horizontally on the cup bottom and is flat in place, and can also prevent the crushing device from falling during pouring. Of course, in order to further improve the accuracy of the detection signal of the linear Hall on this basis, a magnetic shielding ring 305 can be arranged between the detection device and the transmission magnet to eliminate the influence of the transmission magnet on the detection signal of the detection device. In this way, based on the superposition of the vector magnetic field, when the crushing device is placed on the cup bottom, the vector magnetic field strength detected at one of the linear Hall positions is B≈B1+B2, wherein B1 is the magnetic field of the upper attraction magnet at the linear Hall detection point, and B2 is the magnetic field of the lower attraction magnet at the linear Hall detection point. When the crushing device is not placed, B≈B2.

[0076] As a preferred embodiment, a magnetic shielding ring is arranged between the upper transmission magnet and the upper attraction magnet; or a magnetic shielding ring is arranged between the lower transmission magnet and the lower attraction magnet. In this embodiment, a magnetic shielding ring 305 is preferably arranged between the lower transmission magnet and the detection device to sufficiently avoid the magnetic interference of the closest transmission magnet on the detection device. It can be understood that a first magnetic shielding ring can also be arranged between the upper transmission magnet and the upper attraction magnet, and a second magnetic shielding ring can be arranged between the lower transmission magnet, the lower attraction magnet, and the detection device, so that the upper transmission magnet and the lower transmission magnet are both separated from the detection device by the magnetic shielding ring. Thus, the influence of the upper transmission magnet and the lower transmission magnet on the attraction magnet and the detection device is avoided, and the detection of the detection device is more accurate.

[0077] As preferred, the cup body of the food processor is further optimized. The cup body is provided with a cup seat 204, the cup seat is provided with the lower suction magnet and a radial sliding device 206, the radial sliding device 206 drives the lower suction magnet 203 to slide radially and is transversely dislocated with the upper suction magnet 304. After the upper suction magnet 304 is transversely dislocated with the lower suction magnet 203, the magnetic force is greatly weakened, thereby facilitating the user to take out the crushing device from the cup body. The radial sliding device is arranged below the cup bottom. The radial sliding device comprises a sliding support 207, a connecting rod support 208 driving the sliding support linkage, and a connecting rod 209 driving the connecting rod support to slide. The connecting rod is arranged along the central axis of the cup body and is arranged to reciprocate in the axial direction. The sliding support 207 is provided with two sliding supports, which comprise an arc-shaped section 213 and a guide section 214 connected with the arc-shaped section. The arc-shaped section is provided with the lower suction magnet 203. The guide section 214 provides a guide function for the movement of the sliding support 208 in the cup seat, preventing the sliding support from deviating from the sliding track when moving. The connecting rod support 208 is arranged between the two sliding supports. The connecting rod support is provided with a first guide surface 210 linked with the connecting rod and a second guide surface 211 pushing the sliding support to move at two ends thereof. The first end of the connecting rod protrudes out of the cup bottom. The second end of the connecting rod is provided with a pushing surface 212. The connecting rod moves upward and pushes the first guide surface 210, so that the connecting rod support moves radially towards the center of the cup bottom. The second guide surface 211 is arranged as an inclined surface relative to the end of the sliding support. The second guide surface moves synchronously with the connecting rod support 208 and pushes the end of the sliding support, so that the sliding support moves away from the center of the cup bottom. The lower suction magnet moves with the sliding support and is arranged to be dislocated radially with the upper suction magnet. The first end of the connecting rod is lower than the bottom surface of the cup body. When the cup body is placed on a horizontal table, the connecting rod moves upward and triggers the linkage of the connecting rod support and the sliding support to make the lower suction magnet move radially and be dislocated with the upper suction magnet, thereby facilitating the user to remove the crushing device. When the cup body is placed on the main machine 100, the main machine is provided with a mounting platform matched with the cup bottom. The mounting platform is provided with a avoiding portion avoiding the first end of the connecting rod. The avoiding portion is preferably an avoiding hole, so that the first end of the connecting rod protrudes out of the cup bottom and the cup assembly is mounted on the main machine, and the upper suction magnet and the lower suction magnet are kept in the suction state of being arranged correspondingly. Further, the sliding device further comprises a reset device, which is preferably a spring.

[0078] It can be understood that the lower suction magnet can be arranged to be consistent in height with the lower transmission magnet, or can be dislocated in height with the lower transmission magnet. The design is free according to the space degree of the cup seat of the cup body, while ensuring the effective suction distance between the upper suction magnet and the lower suction magnet, and the magnetic adsorption distance between the upper transmission magnet and the lower transmission magnet.

[0079] It can be understood that the Hall plate is arranged outside the lower transmission magnet and can be arranged in a flush manner or with a height difference. In the embodiment, the Hall plate is preferably arranged below and outside the lower transmission magnet. The projection of the lower transmission magnet and the Hall plate on a horizontal plane does not coincide, the space in the cup seat is fully utilized, and the distance between the lower transmission magnet and the detection device is further increased, thereby further avoiding signal interference.

[0080] It can be understood that the lower end of the cup side wall connected with the cup bottom is provided with a guide surface, which facilitates smooth installation of the crushing device to the cup bottom. During the attraction of the upper and lower attraction magnets, the crushing device can be quickly and accurately installed to the cup bottom along the guide surface.

[0081] It can be understood that the overall shape of the food processor can also be expanded in other forms. The food processor can be an integrated food processor with a cup body that cannot be detached from the main machine. The cup body and the main machine are integrally fixed and cannot be detached, and the crushing device is arranged in the cup body. Alternatively, the food processor can also be in the form of a fully automatic wall breaking machine that automatically discharges slurry and waste water. Specifically, the cup body is provided with a liquid discharge port and a liquid discharge valve. The cup body is provided with the crushing device which can be separated from the cup body. The main machine is provided with a power device for driving the crushing device to rotate. The main machine is also provided with a liquid supply system. The crushing device is driven to rotate in a non-contact manner. Whether the cup body can be detached from the main machine or not, the installation position of the crushing device can be detected by the detection device, so that the food processor can be normally started only after the crushing device is placed flat on the cup bottom, thereby avoiding mechanical accidents.

[0082] It can be understood that in the case where the first and second magnetic separation rings are not arranged, a magnetic separation ring is arranged between the detection device and the lower transmission magnet to shield the detection signal interference of the transmission magnet on the detection device.

[0083] Embodiment two

[0084] In the embodiment, the detection device is arranged at different positions relative to the lower attraction magnet. Specifically, as shown in Figure 14 The detection device is arranged between the upper attraction magnet 304 and the lower attraction magnet 203, that is, the detection device 400 is arranged above the lower attraction magnet. The magnetic force lines of the transmission magnet are shielded by the magnetic field of the attraction magnet. At this time, when the crushing device is placed in the cup body, the vector magnetic field strength B of any linear Hall position is approximately B2-B1. Wherein B1 is the magnetic field of the upper attraction magnet at the linear Hall position, and B2 is the magnetic field of the lower attraction magnet at the linear Hall position. When the crushing device is not placed in the cup body, B is approximately B2.

[0085] Embodiment three

[0086] In the embodiment, the spatial positions of the upper attracting magnet and the lower attracting magnet relative to the upper transmission magnet and the lower transmission magnet are different. As shown in Figure 15a and 15b The upper transmission magnet 303 is annular, and the upper attracting magnet 304 is arranged on the inner side of the upper transmission magnet 303. The upper transmission magnet 303 surrounds the upper attracting magnet 304. The lower attracting magnet 203 and the lower transmission magnet 101 are arranged correspondingly above and below the upper attracting magnet and the upper transmission magnet. The upper transmission magnet 303 is annular, and the upper attracting magnet is arranged on the inner side of the upper transmission magnet 303. In space, the magnetic driving space formed by the upper transmission magnet 303 and the lower transmission magnet 101 is on the outer side of the attracting detection space. The advantage of such arrangement is that the detection space is surrounded by the transmission magnets from the outside, and the influence on the detection device is relatively small. In addition, the upper transmission magnet 303 and the lower transmission magnet 101 have sufficient magnetic attraction driving area to fully ensure the reliable transmission of torque between the transmission magnets. The upper attracting magnet 304 located on the inner side of the upper transmission magnet 101 and the lower attracting magnet 203 located on the inner side of the lower transmission magnet 101 and the detection device 400 can ensure the flatness of the bottom surface of the cutter seat shell of the crushing device relative to the placement plane of the cup bottom on the basis of large torque magnetic transmission, avoid the separation of the cutter seat shell and the cup bottom by the soybeans and other materials, and reduce the magnetic force due to the increased distance between the upper transmission magnet and the lower transmission magnet, thereby affecting the normal driving of the crushing knife.

[0087] Embodiment Four

[0088] In the embodiment, the installation position of the detection device is different. Specifically, as shown in Figure 16 The detection device 400 is installed on the main machine 100 and located directly below the lower attracting magnet 203. Whether the user installs the crushing device first and then installs the cup body on the main machine or installs the cup body assembly on the main machine first and then installs the crushing device, the flatness of the bottom surface of the crushing device relative to the cup bottom can be effectively detected to ensure that the crushing device can be placed correctly, and the bottom surface of the cutter seat shell is as close as possible to the cup bottom to ensure strong torque transmission. When the crushing device 300 cannot be placed flat on the cup bottom, the control module prevents the motor of the food processor from starting and timely reminds the user to clean the foreign matter on the cup bottom and reposition the crushing device. Specifically, the main machine is provided with a mounting portion 102, which is specifically a mounting cavity arranged around the outer periphery of the lower transmission magnet. The Hall plate 402 and the linear Hall 401 are located in the mounting cavity. The mounting cavity is an annular mounting cavity formed by the upward protrusion of the upper end surface of the upper shell of the main machine. The main machine upper end is provided with a coupler, which is arranged on one side of the mounting cavity. The coupler is coupled and connected with the coupler of the cup body.

[0089] In addition to the above preferred embodiments, the technical solutions of the utility model are not limited to the above embodiments, it should be pointed out that the combination of multiple technical solutions in any one embodiment and the combination of the technical solution of any one embodiment and the technical solution of other one or more embodiments are within the protection scope of the utility model. Although the utility model has been described in detail by general description and specific embodiments above, some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model all belong to the range of the utility model required to be protected.

Claims

1. A cup assembly for a food processor, characterised in that, The application relates to a food processor, comprising: a cup body with a processing cavity; a crushing device which is detachably arranged in the cup body, the crushing device comprising a crushing blade and a blade seat shell, wherein an upper suction magnet is arranged in the blade seat shell, and a lower suction magnet is arranged below the upper suction magnet at the bottom of the cup body; a detection device which is arranged below the upper suction magnet, and is used for detecting a signal of the lower suction magnet when the crushing device is separated from the cup body, and a signal of the superposition of the vector magnetic fields of the upper suction magnet and the lower suction magnet when the crushing device is placed in the cup body, so as to detect whether the crushing device is placed in place at the bottom of the cup body.

2. The cup assembly for a food processor according to claim 1, wherein, The detection device comprises a plurality of linear Hall elements, and the projections of the upper suction magnet and the lower suction magnet on a horizontal plane cover the projections of the linear Hall elements on the horizontal plane.

3. The cup assembly for a food processor according to claim 2, wherein, A plurality of lower suction magnets are circumferentially arranged, and each lower suction magnet is correspondingly provided with at least one linear Hall element.

4. The cup assembly for a food processor according to claim 2, wherein, The detection device comprises a Hall plate, and the linear Hall elements are arranged on the Hall plate.

5. The cup assembly for a food processor of claim 1, wherein, The cup body is provided with a cup seat, and the lower suction magnet and the detection device are arranged in the cup seat.

6. The cup assembly for a food processor according to claim 1, wherein, The detection device is arranged below the lower suction magnet.

7. The cup assembly for a food processor according to claim 1, wherein, The detection device is arranged between the upper suction magnet and the lower suction magnet.

8. The cup assembly for a food processor according to claim 1, wherein, The upper suction magnet is annular or ring-like.

9. The cup assembly for a food processor according to claim 1, wherein, A transmission magnet is arranged in the blade seat shell, a lower transmission magnet is arranged in the main body of the food processor, and a magnetic isolation ring is arranged between the detection device and the upper transmission magnet and / or the lower transmission magnet.

10. The cup assembly for a food processor according to claim 9, wherein, The upper suction magnet is arranged at the outer circumferential side of the upper transmission magnet, the lower suction magnet and the lower transmission magnet are arranged in a one-up-and-one-down mode with the upper suction magnet and the upper transmission magnet, and the detection device is arranged at the outer side of the projection of the lower transmission magnet on a horizontal projection plane.

11. The cup assembly for a food processor according to claim 9, wherein, The upper transmission magnet is annular, the upper suction magnet is arranged at the inner side of the upper transmission magnet, and the lower suction magnet and the lower transmission magnet are arranged in a one-up-and-one-down mode with the upper suction magnet and the upper transmission magnet.

12. The cup assembly for a food processor according to claim 1, wherein, The lower suction magnet is an arc-shaped magnet or a point-shaped magnet, and at least two lower suction magnets are arranged in a ring shape.

13. The cup assembly for a food processor according to claim 1, wherein, The cup body is provided with a cup seat, the cup seat is provided with the lower suction magnet and a radial sliding device, the radial sliding device drives the lower suction magnet to slide in a radial direction, and the lower suction magnet is transversely dislocated with the upper suction magnet, so as to take out the crushing device from the cup body.

14. The cup assembly for a food processor according to claim 1, wherein, The detection device is arranged in the main body of the food processor and below the lower suction magnet.

15. The cup assembly for a food processor according to claim 9, wherein, The lower suction magnet and the lower transmission magnet are dislocated in height.

16. The cup assembly for a food processor according to claim 9, wherein, The upper transmission magnet and the lower transmission magnet are 4-9-pole magnets.

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