Food processor

Abstract

The utility model provides a food processing machine, which comprises a main machine, a lower transmission magnet and a lower transmission magnet, the cup body assembly comprises a cup body and a cup cover, and the cup body assembly is installed on the main machine; the smashing device is separably arranged in the cup body, the smashing device comprises a smashing cutter, a cutter holder shell and an upper transmission magnet arranged in the cutter holder shell, and an upper detection magnet is further arranged in the cutter holder shell; the detection device is located below the upper detection magnet, and 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 by detecting a signal of the upper detection magnet. And when the crushing device is placed in the cup body, the detection device detects a signal of the upper detection magnet and feeds back the signal to a control module of the food processor.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of food processing machines, especially relates to a non-contact magnetic drive safe 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 power device, 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 power device to realize the rotation of the crushing knife driven by the power device and the crushing processing of the food materials in the cup body.

[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, which realizes the thorough cleaning of the crushing knife and the space at the bottom of the cup body by detaching the crushing knife assembly.

[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 power device, and a base in which the power device is arranged. The food processor further comprises a driving coupling arranged on a power output shaft of the power device 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 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 crushing knife to be stuck, and the power device to be blocked and burned. 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 power device 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, there are the problems of missing installation of the crushing device, wrong installation of the crushing device, and the safety risk of flying knife and splashing of the slurry due to the fact that the crushing device is not placed flat on the bottom of the cup because of the particle materials between the crushing device and the cup bottom, and the crushing device cannot be normally and smoothly rotated for processing the materials by the magnetic drive. The above problems are urgent problems to be solved for the food processor with non-contact transmission. Practical new type content

[0006] The purpose of the utility model is to provide a food processor, which adopts non-contact driving of the crushing device to rotate and process. The problems of failure to normally start the processing program caused by missing installation of the crushing device or wrong installation of the crushing device, and the problem that the crushing device cannot be placed in place on the bottom of the cup caused by the fact that the user first places the material and then places the crushing device, thereby affecting the effective power transmission and even the transmission failure.

[0007] In order to solve the above technical problems, the utility model provides a food processor, include: host computer, including by power device drive lower transmission magnet, cup body subassembly, including cup body and cup cover, cup body subassembly installation in host computer, comminution device, can separate setting in cup body, comminution device includes comminution knife, knife seat casing and set up in the upper transmission magnet of knife seat casing, be equipped with upper detection magnet in the knife seat casing, detection device, be located the below of upper detection magnet, the detection device is used to through the signal of upper detection magnet is detected, with detection comminution device whether in the cup bottom of cup body is placed in place.

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

[0009] Further, the linear Hall is provided with a plurality of linear Halls, and the plurality of linear Halls are distributed circumferentially around a central axis of the cup body.

[0010] Further, the detection device includes a Hall plate, the linear Hall is arranged on the Hall plate, and the Hall plate is located on the outer side of the lower transmission magnet.

[0011] Further, the cup body bottom is provided with a cup seat, and the cup body is detachably mounted on the host computer through the cup seat, and the detection device is mounted in the cup seat.

[0012] Further, the upper detection magnet is annular or ring-like.

[0013] Further, the detection device is provided with a magnetic separation ring between the upper transmission magnet and / or the lower transmission magnet.

[0014] Further, the upper transmission magnet is annular, and the upper detection magnet is arranged on the inner side of the upper transmission magnet.

[0015] Further, the detection device is mounted on the host computer.

[0016] Further, the upper transmission magnet and the lower transmission magnet are 4-9 pairs of pole magnets.

[0017] The utility model has the advantages that:

[0018] 1. A food processor main machine is provided with a lower transmission magnet driven by a power device, and a crushing device including a crushing knife, a knife seat shell and an upper transmission magnet arranged in the knife seat shell. The power device realizes non-contact torque transmission between the upper transmission magnet and the lower transmission magnet, thereby driving the crushing knife to rotate and process the food materials in the cup body. The knife seat shell is provided with an upper detection magnet. When the crushing device is taken out of the cup body, the detection device outputs a signal that the upper detection magnet is not detected and feeds back to the control module. When the crushing device is placed in the cup body, the detection device detects the signal of the upper detection magnet and feeds back to the food processor control module.

[0019] 2. The detection device includes a linear Hall, and the projection of the upper detection magnet on the horizontal plane covers the projection of the linear Hall on the horizontal plane. Since the magnetic force between the magnets is greatly affected by the distance, the linear Hall is closer to the upper detection magnet in the vertical direction, which can more accurately detect the signal of the upper detection magnet to accurately detect the in-place state of the crushing device. If the linear Hall is not within the projection range of the upper detection magnet on the horizontal plane, the linear distance between the linear Hall and the suction magnet increases, the signal value deviation is large, and it is easy to be affected by the interference of the upper transmission magnet.

[0020] 3. The linear Hall is provided with a plurality of linear Halls which are distributed circumferentially around the central axis of the cup body. The food processor detects the vector magnetic field signal of the upper detection magnet through the detection device to determine whether the bottom surface of the knife seat shell is placed flat on the cup bottom. When the crushing device is partially raised or completely isolated by the material between the crushing device and the cup bottom, the distance between the upper detection magnet and the linear Hall is not the same due to the improper placement of the crushing device, and the signals of the upper detection magnet vector magnetic field detected by the plurality of linear Halls from different positions change. According to the detected signal, it is judged that the crushing device is not placed flat on the cup bottom, and the food processor control module controls the power device not to start, and prompts the user to place the crushing device correctly. This ensures the safe use of the food processor and prevents the crushing knife from being severely tilted and hitting the inner wall of the cup or the slurry in the cup from splashing due to the start of the crushing device in the improper placement state. Specifically, when the bottom surface of the knife seat shell of the crushing device is raised by one or more hard particles such as soybeans between the bottom surface of the knife seat shell and the cup bottom, at least one linear Hall can sense the abnormal signal of the upper detection magnet vector magnetic field. The abnormal signal is fed back to the food processor control module, which identifies that the bottom surface of the knife seat shell of the crushing device is not placed flat, and there is a situation of uneven gap between the cup bottom.

[0021] 4、The detection device comprises a Hall plate, a linear Hall is arranged on the Hall plate, 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, and forming a suction space and a detection space of the crushing device in the height direction of the Hall plate on the outer side of the magnetic transmission space. Thus, in terms of space structure, the radial dimension of the cup body is more reasonable and compact, the outer circumference of the crushing device is longer, the detection device and the corresponding upper detection magnet are arranged on the outer side of the upper transmission magnet, the crushing device is inclined at a certain angle, and the linear Hall on the Hall plate can accurately and sensitively sense the difference in signal change, thereby quickly identifying and determining the flatness of the installation of the crushing device relative to the cup bottom by comparing with the reference value.

[0022] 5、The cup body base is provided with a cup seat, and the detection device is installed in the cup seat, so that the detection device is closest to the upper detection magnet, the change of the vector magnetic field of the upper detection magnet that can be detected by the detection device is more obvious, the detection of the flatness of the crushing device placed on the cup bottom is more accurate, and problems such as tilting, warping, and unevenness of the bottom surface of the crushing device due to the jamming of the bottom surface of the crushing device knife seat shell and the cup bottom, flying of the crushing knife, splashing of the slurry, and failure of magnetic drive are avoided.

[0023] 6、The upper transmission magnet is annular, and the upper detection magnet is arranged on the inner side of the upper transmission magnet. In space, the magnetic drive space formed by the upper and lower transmission magnets is on the outer side of the suction detection space. The advantage of this arrangement is that the detection space is surrounded by the transmission magnet from the outside, the influence on the detection device is relatively small, and the upper and lower transmission magnets have sufficient magnetic suction driving area to fully ensure the reliable transmission of torque between the transmission magnets. On the basis of large-torque magnetic transmission, the upper detection magnet and the detection device on the inner side of the upper transmission magnet can ensure the flatness of the placement of the bottom surface of the crushing device knife seat shell relative to the cup bottom, avoid the separation of the knife seat shell and the cup bottom by beans and other materials, and reduce the magnetic force between the upper and lower transmission magnets, thereby affecting the normal driving of the crushing knife.

[0024] 7、The upper detection magnet is annular or ring-like, so that the upper detection magnet is continuously distributed in the circumferential direction. No matter how the user installs the crushing device, and no matter how the food processor is driven to rotate the crushing device to any angular position in the circumferential direction during operation, the detection device can detect the magnetic field signal of the upper detection magnet to accurately detect whether the bottom of the crushing device is installed flat on the cup bottom, thereby improving the user's experience of installing the crushing device, and improving the stability and reliability of the detection device.

[0025] 8、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, the flatness of the bottom surface of the crushing device relative to the cup bottom can be effectively detected, so that the crushing device can be correctly placed, the bottom surface of the knife seat shell is as close as possible to the cup bottom to ensure strong torque transmission, and when the crushing device cannot be placed flat on the cup bottom, the control module can prevent the food processor power device from starting and timely remind the user to clean the foreign matter on the cup bottom and reposition the crushing device.

[0026] 9、The magnets of the upper transmission magnet and the lower transmission magnet are preferably 4-9 pole magnets, and the upper transmission magnet and the lower transmission magnet are circular or annular, and the N and S poles are alternately distributed in the circumferential direction, so that the upper transmission magnet is driven to rotate under the alternating existence of attractive force and repulsive force of the opposite poles when the lower transmission magnet is driven to rotate by the power device. The upper transmission magnet of a single magnetic pole and the lower transmission magnet of a single magnetic pole opposite to it form a pair of pole magnets. The more the magnetic force poles of the magnets, 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 fewer the magnetic force poles of the magnets, the more difficult the installation and positioning for the user, and the production and assembly are relatively simple. BRIEF DESCRIPTION OF DRAWINGS

[0027] 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 be obtained by those skilled in the art without creating laborious work.

[0028] Figure 1 A food processor whole machine structure schematic view is described in the present application.

[0029] Figure 2 A food processor transmission magnet schematic view is described in the present application.

[0030] Figure 3 A food processor transmission magnet magnetic attraction force distance change schematic view is described in the present application.

[0031] Figure 4 A food processor Hall detection circuit schematic view is described in the present application.

[0032] Figure 5 A food processor crushing device not flatly placed schematic view is described in the present application.

[0033] Figure 6 A food processor transmission magnet and detection device exploded structure schematic view is described in the present application.

[0034] Figure 7The food processor detection device and the upper detection magnet structure schematic view of the utility model are shown in the figure.

[0035] Figure 8a The upper transmission magnet and the upper detection magnet structure schematic view of the utility model are shown in the figure.

[0036] Figure 8b The lower transmission magnet structure schematic view of the utility model is shown in the figure.

[0037] Figure 9a The upper detection magnet structure schematic view of the utility model is shown in the figure.

[0038] Figure 9b The lower transmission magnet structure schematic view of the utility model is shown in the figure.

[0039] Figure 10 The main machine installation part structure schematic view of the utility model is shown in the figure.

[0040] The names of the components in the figure are as follows: 100, main machine; 101, lower transmission magnet; 102, installation part; 200, cup body assembly; 201, cup body; 202, cup bottom; 203, turbulence rib; 204, cup seat; 205, heating piece; 300, crushing device; 301, crushing knife; 302, knife seat shell; 303, upper transmission magnet; 304, upper detection magnet; 305, magnetic isolation ring; 306, knife shaft; 400, detection device; 401, linear Hall; 402, Hall plate; 500, material; 600, N pole; 700, S pole. DETAILED DESCRIPTION

[0041] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0042] As Figures 1-10The utility model provides a safe food processing machine, including host computer, cup body subassembly, comminution device and detection device, the host computer includes by power device driven lower transmission magnet, cup body subassembly includes cup body and cup cover (not shown in the drawing), cup body subassembly installs in the host computer. Comminution device is detachable and is arranged in the cup body, the comminution device includes comminution knife, cutter seat casing and the upper transmission magnet of being arranged in cutter seat casing, the lower transmission magnet drives the upper transmission magnet rotation, the cutter seat casing still is equipped with upper detection magnet. The detection device is used to through the signal of upper detection magnet to detect whether the comminution device is placed in place at the cup bottom of cup body. The " place in place " in the utility model refers to whether the comminution device is installed at the cup bottom of cup body, including user leak detection and / or user misplacement detection. When the user does not place the comminution device in the cup body and starts the function program needing comminution knife to carry out comminution processing, the detection device does not detect the signal of the upper detection magnet, and the food processing machine control module prompts and triggers alarm processing according to the electric signal of detection device feedback, and prompts the user to place the comminution device. Similarly, when the user selects the function program without comminution to carry out comminution processing, the comminution device is placed in the cup body, at this time, the food processing machine control module prompts and triggers the alarm processing according to the electric signal of detection device feedback, and prompts the user to take out the comminution device. Similarly, when the user has placed material in advance and does not place the comminution device in the cup body and starts the function program needing comminution knife to carry out comminution processing, the detection device does not detect the signal of the upper detection magnet, and the food processing machine prompts the user to place the comminution device, when the user directly places the comminution device in the cup body that has placed material in advance, the bottom surface of the comminution device is not placed close to the cup bottom but is separated by material, when the detection device can detect the weak signal of the upper detection magnet due to long detection distance, the intelligent recognition is that the comminution device is not placed in place.

[0043] Specifically, as shown in the drawings, Figure 1 The utility model provides a kind of food processing machine, including host computer 100, cup body subassembly 200, comminution device 300 and detection device 400. The host computer includes by power device driven lower transmission magnet 101, the cup body subassembly includes cup body 201 and cup cover (not shown in the drawing), cup body inner wall is equipped with turbulence rib 203, cup body subassembly installs in host computer 100, comminution device is detachable and is arranged in cup body 201, comminution device includes comminution knife 301, cutter seat casing 302 and the upper transmission magnet 303 of being arranged in cutter seat casing, power device realizes non-contact type torque transmission between upper transmission magnet 303 and lower transmission magnet 101, to drive comminution knife rotation and process food material in cup body. Therefore, the cup bottom of cup body is continuous surface, without perforation and shaft seal structure, can avoid the problem that liquid in cup body seeps downward to power device, leading to food processing machine damage.

[0044] The cutter seat shell 302 is also provided with an upper detection magnet 304, as shown. Figure 2 The detection device 400 is located below the upper detection magnet, and the detection device detects the signal of the vector magnetic field of the upper detection magnet to detect whether the crushing device 300 is placed flat on the bottom of the cup. When the crushing device 300 is taken out of the cup, the detection device 400 does not detect the signal of the upper detection magnet, and when the crushing device is placed in the cup, the detection device can detect the signal of the upper detection magnet, so as to determine whether the crushing device is placed on the bottom of the cup according to different detection signals. The distance between the detection device and the upper detection magnet can be adjusted and matched according to the specific requirements of detection accuracy and the specifications of the detection device.

[0045] Further, when the crushing device is placed flat on the bottom of the cup and there is no material or foreign matter between the bottom surface of the crushing device and the bottom of the cup, the signal of the vector magnetic field of the upper detection magnet detected by the detection device is the reference value of the correct placement of the crushing device. When the crushing device is elevated by beans and other materials 500, the signal of the vector magnetic field of the upper detection magnet detected by the detection device changes, and according to the difference between the detected signal and the reference value, it is judged that the crushing device is not placed flat, the food processor control module controls the power device 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 an unplaced state, causing the crushing knife to tilt and hit the inner wall of the cup or the slurry in the cup to splash.

[0046] As shown in Figure 3 The magnetic attraction between the upper transmission magnet 303 and the lower transmission magnet 101 and the distance between them is related, and the magnetic attraction decreases exponentially with the increase of the distance. Therefore, when the crushing device is inserted with beans, black beans or rice and other solid materials with hard texture, or the user first puts the material and then places the crushing device in the cup, a gap will appear between the bottom surface of the crushing device cutter 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 between the crushing knife and the power device is large and unstable, the crushing knife tilts to cause the slurry to splash during rotation, and the magnetic drive abnormally transmits abnormal noise to cause noise increase. In addition, too much material between the crushing device and the cup bottom will cause the magnetic transmission to fail directly, 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.

[0047] Embodiment one

[0048] As Figures 1 to 10 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 power device. 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 in transmission connection 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 detection magnet 304. Specifically, 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 transmission disc body is fixedly connected with the lower end of a knife shaft 306. The upper end of the knife shaft 306 is fixedly provided with the crushing knife 301. The detection device is located below the upper detection magnet. In the embodiment, the detection device is arranged below the upper detection magnet. When the crushing device 300 is installed in the cup, it includes the upper detection magnet 304, the bottom surface of the knife seat shell of the crushing device, the bottom of the cup and the detection device 400 from top to bottom in height. The magnetic induction line of the upper detection magnet passes through the detection point of the detection device. The detection device detects the signal of the vector magnetic field of the upper detection magnet passing through the detection point of the detection device to detect whether the crushing device is placed on the bottom of the cup and whether it is placed in position. Preferably, the detection device 400 comprises a plurality of detection points. The detection points 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 on 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 detection magnet can accurately detect the signal of the vector magnetic field of the upper detection magnet.

[0049] 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 signal of the upper detection magnet. The linear Hall generates a deflection voltage according to the magnetic field of the upper detection magnet, so as to realize the conversion of the magnetic field signal of the upper detection magnet to a voltage signal. As Figure 4As shown, the single linear Hall includes a +5V power supply 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.

[0050] When the crushing device 300 is installed to the cup bottom 202 of the cup body, the projection of the upper detection magnet 304 on the horizontal plane covers the projection of the linear Hall on the horizontal plane, so that the upper detection 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, and when the magnetic induction lines of the upper detection 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 detection magnet in the vertical direction, which can more accurately detect the signal of the upper detection magnet to accurately detect whether the crushing device is placed flat in place. If the linear Hall is not within the projection range of the upper detection magnet on the horizontal plane, the linear distance between the linear Hall and the upper detection magnet increases, the signal value is greatly deviated, and it is easy to be affected by the interference of the upper driving magnet and the lower driving magnet.

[0051] The linear Hall 401 is provided in plurality, and 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 separated by one or more hard particles such as soybeans, at least one linear Hall can sense the signal anomaly of the vector magnetic field of the upper detection magnet 304 at the position of the linear Hall, 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.

[0052] As a preferred, the surface magnetic intensity of the upper driving magnet 303 and the lower driving magnet 101 is 475GS-750GS, and the preferred embodiment is 500GS, to meet the reliable transmission of torque and stable operation of the crushing knife. The surface magnetic intensity of the upper detection magnet is 267GS-386GS, to meet 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 on the cup bottom when the cup body is separated from the main machine to pour the slurry, to avoid falling off when pouring the slurry.

[0053] As Figure 6 and Figure 7As shown, the detection device 400 includes a Hall plate 402, the linear Hall is arranged on the Hall plate, the Hall plate is arranged outside the lower transmission magnet, thereby forming a magnetic transmission space inside the Hall plate 402, forming a suction space and a detection space of the crushing device in the height direction of the Hall plate outside the magnetic transmission space. Thus, in terms of space structure, the radial dimension of the cup body is more reasonable and compact, the outer circumference of the crushing device is longer, the detection device and the corresponding upper detection magnet are arranged outside the upper transmission magnet and the lower transmission magnet, when the crushing device is inclined at a certain angle, the height change of the area away from the center of the crushing device is greater than that of the area close to the center, therefore, the linear Hall on the Hall plate outside 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 cup bottom by comparing with the reference value.

[0054] As shown in the figure, Figure 7 The upper detection magnet 304 is annular or ring-like, preferably continuous annular, so that the upper detection magnet 304 is continuously distributed in the circumferential direction, whether the user installs the crushing device 300 at any angle, and whether the food processor drives the crushing device to rotate to any angular position in the circumferential direction during operation, the detection device can detect the magnetic field signal of the upper detection magnet to detect whether the bottom of the crushing device is installed flat to the cup bottom, improve the user's experience of installing the crushing device, and the stability and reliability of the detection device.

[0055] As preferred, the upper transmission magnet 303 and the lower transmission magnet 101 are disc-shaped on the inside, and the upper detection magnet 304 is annular or ring-like or arc-shaped on the outside of the upper transmission magnet and the lower transmission magnet. In this embodiment, specifically, the upper detection magnet 304 is arranged on the outer circumferential side of the upper transmission magnet, and the detection device 400 is arranged outside the projection of the lower transmission magnet in the horizontal projection plane. When the crushing device is placed on the cup bottom, the signal of the vector magnetic field of the upper detection magnet 304 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 Halls 401 tend to approach the reference value of each linear Hall, and when there is material clamped between the bottom surface of the crushing device and the cup bottom, the distance between the upper detection magnet and the detection device at the position where the material is clamped increases, the signal of the vector magnetic field that the detection device can detect becomes weaker, at least one of the plurality of linear Halls detects an abnormal signal, thereby determining that the crushing device is not completely placed flat in place. Specifically, the Hall plate 402 is provided with two arc-shaped segments, arranged below the upper detection magnet, each Hall plate is provided with two linear Halls, and the two linear Halls are arranged at the two ends of the Hall plate, which is equivalent to that the detection device includes four linear Halls.

[0056] 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 detection device 400 is arranged in the cup seat, so that the detection device 400 is closest to the upper detection magnet 304. The more obvious the change of the vector magnetic field of the upper detection magnet that can be detected by the detection device 400, the more accurate the detection of the flatness of the placement plane of the crushing device on the cup bottom. The problems such as the crushing device bottom surface being tilted, warped, having a large gap or being uneven with the cup bottom, the crushing knife flying, the slurry splashing, and the magnetic drive being invalid due to the crushing device knife seat shell bottom surface and the cup bottom being clamped are avoided.

[0057] As shown in Figure 8a and Figure 8b , 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 repulsion and attraction of the opposite poles exist alternately when the lower transmission magnet is driven to rotate by the power device. 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.

[0058] The upper transmission magnet and the lower transmission magnet are preferably 6-pole magnets. The magnetic properties of the magnets close to each other are opposite, and when the user installs the crushing device in the cup body, the magnetic properties of the transmission magnet closest to the linear Hall are random, and the magnetic field detected by the linear Hall is also in a random state. In this embodiment, the linear Hall is arranged below the lower transmission magnet. When the crushing device 300 is placed in the cup body, a plurality of linear Halls detect the signal of the vector magnetic field of the upper detection magnet 304 from different positions. 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 size of the magnetic field of the detection point, μ0 is the magnetic permeability of vacuum, m is the magnetic moment of the magnet, which is a vector related to the strength and direction of the magnet, and r is the distance from the magnetic pole to the test point. The intensity of the magnetic field is inversely proportional to the third power of the distance of the detection point. The distance between the linear Hall and the transmission magnet is much larger than the distance between the linear Hall and the upper detection magnet, so the magnetic field of the transmission magnet that can be detected by the position of the linear Hall is much smaller than the magnetic field of the upper detection magnet. In order to further improve the detection signal accuracy 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.

[0059] As preferred, a magnetic isolation ring is arranged between the upper transmission magnet and / or the lower transmission magnet and the upper detection magnet. In this embodiment, a magnetic isolation ring 305 is preferably arranged between the lower transmission magnet and the detection device to avoid magnetic interference of the detection device by the nearest transmission magnet.

[0060] It can be understood that the Hall plate is arranged outside the lower transmission magnet and can be arranged in the same height or with a height difference. In this embodiment, the Hall plate is preferably arranged below and outside the lower transmission magnet, and the projections of the lower transmission magnet and the Hall plate on the horizontal plane do 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 to further avoid signal interference.

[0061] It can be understood that the lower end of the cup side wall connected to the cup bottom is provided with a guide surface to facilitate smooth installation of the crushing device to the cup bottom.

[0062] 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 that can be separated from the cup body, the main machine is provided with a power device for driving the crushing device to rotate, and 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 to ensure that the crushing device is normally started after being placed flat on the cup bottom. Food processor works to avoid mechanical accidents.

[0063] It can be understood that in the case where the first magnetic isolation ring and the second magnetic isolation ring are not arranged, a magnetic isolation ring is arranged only between the detection device and the lower transmission magnet to shield the detection signal interference of the transmission magnet on the detection device.

[0064] It can be understood that the detection device can also be other detection elements with vector magnetic field signal detection function other than linear Hall.

[0065] Embodiment two

[0066] In this embodiment, the spatial position of the upper detection magnet relative to the upper transmission magnet and the lower transmission magnet is different. For example, Figure 9a and 9bAs shown, the upper transmission magnet 303 is annular, and the upper detection magnet 304 is arranged on the inner side of the upper transmission magnet 303, and the upper transmission magnet 303 is arranged around the upper detection magnet 304. The upper transmission magnet 303 is annular, and the upper detection 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 outside the suction detection space. The advantage of such arrangement is that the detection space is surrounded by the transmission magnet from the outside, and the influence on the detection device is relatively small. The upper transmission magnet 303 and the lower transmission magnet 101 have sufficient magnetic suction driving area to fully ensure the reliable transmission of torque between the transmission magnets. The upper detection magnet 304 and the detection device 400 located on the inner side of the upper transmission magnet 101 can ensure the flatness of the bottom surface of the cutter holder 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 holder shell and the cup bottom by soybeans and other materials, and the increase of the distance between the upper transmission magnet 101 and the lower transmission magnet 101 will cause the magnetic force to decrease suddenly, which will affect the normal driving of the crushing knife.

[0067] Embodiment three

[0068] In this embodiment, the installation position of the detection device is set differently. Specifically, as shown in Figure 10 The detection device 400 is installed on the main machine 100. Whether the user installs the crushing device first and then installs the cup assembly on the main machine, or installs the cup 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, and the crushing device can be placed correctly. The bottom surface of the cutter holder 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 food processor from starting and timely reminds the user to clean 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 upper end surface of the upper shell of the main machine protruding upward. 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 cup coupler.

[0069] 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 food processor, characterised in that, The application relates to a coffee machine, comprising: a main body, including a lower transmission magnet driven by a power device; a cup assembly, including a cup body and a cup cover, the cup assembly being installed on the main body; a crushing device, which is detachably arranged in the cup body, the crushing device including a crushing knife, a knife seat shell and an upper transmission magnet arranged in the knife seat shell, and an upper detection magnet being further arranged in the knife seat shell; a detection device, which is arranged below the upper detection magnet and is used for detecting whether the crushing device is placed in place on the bottom of the cup body by detecting a signal of the upper detection magnet.

2. The food processor of claim 1, wherein, The detection device includes a linear Hall, and a projection of the upper detection magnet on a horizontal plane covers a projection of the linear Hall on the horizontal plane.

3. The food processor of claim 2, wherein, A plurality of linear Halls are circumferentially distributed around a central axis of the cup body.

4. The food processor of claim 2, wherein, The detection device includes a Hall plate, and the linear Hall is arranged on the Hall plate, and the Hall plate is located on the outer side of the lower transmission magnet.

5. The food processor of claim 1, wherein, The bottom of the cup body is provided with a cup seat, the cup body is detachably installed on the main body through the cup seat, and the detection device is installed in the cup seat.

6. The food processor of claim 1, wherein, The upper detection magnet is annular or ring-like.

7. The food processor of claim 1, wherein, A magnetic isolation ring is arranged between the detection device and the upper transmission magnet and / or the lower transmission magnet.

8. The food processor of claim 1, wherein, The upper transmission magnet is annular, and the upper detection magnet is arranged on the inner side of the upper transmission magnet.

9. The food processor of claim 1, wherein, The detection device is installed on the main body.

10. The food processor of claim 1, wherein, The upper transmission magnet and the lower transmission magnet are 4-9-pole magnets.

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