A food processor

Abstract

This utility model relates to a food processing machine, which includes a main unit, a cup body, a pulverizing device, and a geomagnetic detection device. The geomagnetic detection device is located off-center from the center of the pulverizing blade. The projections of the driven magnets on the horizontal plane do not cover the first and second detection magnets, and the projections of the first and second detection magnets on the horizontal plane do not cover the geomagnetic detection device. The device detects the three-coordinate magnetic field vector resulting from the superposition of the first and second detection magnets, determining whether the pulverizing device is properly installed at the bottom of the cup body. This utility model effectively prevents the pulverizing device from starting if it is not properly positioned, which could lead to the pulverizing blades tilting severely and impacting the inner wall of the cup, or causing the slurry inside the cup to splash.

Description

Technical Field

[0001] This utility model relates to the field of food processing machine technology, and in particular to a food processing machine. Background Technology

[0002] Existing food processors, such as blenders and soy milk makers, generally consist of a main unit and a cup body. The cup body contains a motor-driven pulverizing blade, which includes pulverizing blades and a blade shaft. The blade shaft passes through the bottom of the cup body and connects to the motor, enabling the motor to drive the pulverizing blades to rotate and pulverize the food inside the cup. Because the pulverizing blades are fixed to the bottom of the cup body, it is difficult to clean the blades and the space beneath them, making cleaning inconvenient.

[0003] To address the issue of cleaning the shredder blades, a food processor with a detachable shredder blade assembly has emerged in the industry. This allows for thorough cleaning of the shredder blades and the space at the bottom of the cup by disassembling the assembly. However, because the blade shaft still needs to be in contact and connected to the motor output shaft, the shredder blades are difficult to disassemble and assemble, and frequent disassembly and reassembly can lead to inaccurate alignment during installation.

[0004] To completely solve the problems of inconvenient disassembly and assembly of the pulverizing blade and inaccurate installation alignment caused by frequent disassembly and assembly, patent application number CN202420835998.6 discloses a reliable food processing machine. This machine includes a rotating base for the blade assembly with a first magnetic element, and a motor with a second magnetic element to drive the first magnetic element. The first and second magnetic elements are two ring-shaped sets of magnets, enabling air-to-air transmission between the rotating base and the motor. The motor drives the blade assembly to rotate via the magnetic elements. The blade assembly is detachably mounted on a positioning shaft, which not only facilitates disassembly and assembly but also ensures precise installation alignment between the blade assembly and the motor, reducing transmission errors. However, a technical problem exists in this solution: the blade assembly is driven by the attraction of the upper and lower magnetic elements. If material gets stuck between the blade assembly and the bottom of the cup, the distance between the first and second magnetic elements increases, preventing the motor from effectively transmitting torque through magnetic transmission.

[0005] Therefore, the following technical problems exist: material is stuck between the crushing device and the bottom of the cup, which prevents the blade assembly from being placed flat in the cup. This makes it impossible for the blade assembly to process the material normally and smoothly through magnetic drive rotation, resulting in safety hazards such as liquid turbulence and slurry splashing. Utility Model Content

[0006] The purpose of this utility model is to provide a food processing machine to solve the technical problems of safety hazards such as liquid turbulence and slurry splashing caused by the blade assembly not being able to be placed flat in the cup.

[0007] To solve the above-mentioned technical problems, this utility model provides a food processing machine, comprising:

[0008] Host;

[0009] The cup body, installed on the main unit, is used to hold the slurry;

[0010] The pulverizing device is detachably disposed at the bottom of the cup body. The pulverizing device includes a pulverizing blade, a blade holder housing, and a driven magnet disposed in the blade holder housing to drive the pulverizing blade. The blade holder housing is also provided with a first detection magnet. The cup body is provided with a second detection magnet that cooperates with the first detection magnet. The second detection magnet is disposed below the first detection magnet.

[0011] A geomagnetic detection device for detecting the three-coordinate magnetic field vector after the superposition of the first and second detection magnets. The geomagnetic detection device is located at a position off from the center of the crusher. The projection of the driven magnet on the horizontal plane does not cover the first and second detection magnets, and the projection of the first and second detection magnets on the horizontal plane does not cover the geomagnetic detection device.

[0012] Preferably, the first detection magnet and the second detection magnet are both located outside the driven magnet, and the geomagnetic detection device is located outside the first detection magnet and the second detection magnet.

[0013] Preferably, the geomagnetic detection device is located on a different horizontal plane from both the first and second detection magnets.

[0014] Preferably, there are at least two geomagnetic detection devices.

[0015] Preferably, the geomagnetic detection device consists of at least two devices, and the line connecting them in the horizontal plane passes through the center of the crusher.

[0016] Preferably, there are two geomagnetic detection devices.

[0017] Preferably, the polarities of the first detection magnet and the second detection magnet are opposite on opposite sides.

[0018] Preferably, at least one of the first detection magnet and the second detection magnet is ring-shaped or ring-like.

[0019] Preferably, the first detection magnet is ring-shaped or near-ring-shaped, and the second detection magnet is dot-shaped.

[0020] Preferably, the bottom of the cup body is provided with a cup holder, the cup body is detachably installed on the main unit through the cup holder, the second detection magnet is installed in the cup holder, and the geomagnetic detection device is installed in the main unit.

[0021] The beneficial effects of this utility model are:

[0022] 1. This utility model provides a food processing machine that utilizes a first detection magnet within the blade holder housing and a second detection magnet cooperating with the first detection magnet within the cup body. A geomagnetic detection device is positioned offset from the center of the pulverizing blade. The second detection magnet is located below the first detection magnet. The projections of the driven magnets on the horizontal plane do not cover the first and second detection magnets, nor do the projections of the first and second detection magnets on the horizontal plane cover the geomagnetic detection device. By detecting the three-coordinate magnetic field vector formed by the superposition of the first and second detection magnets, the machine determines whether the pulverizing device is properly installed at the bottom of the cup body. Based on this, when the blade assembly is placed into the cup body, the first and second detection magnets superimpose to form a complete magnetic field. The geomagnetic detection device detects a three-dimensional three-coordinate magnetic field vector (XYZ), which can detect both the magnetic field strength and direction. Each time the pulverizing device is installed, the three-coordinate magnetic field vector formed by the superposition of the first and second detection magnets is detected to determine whether the pulverizing device is properly installed at the bottom of the cup body, thereby locating the pulverizing device. The placement state; when the magnetic field passes through the XYZ directions, it causes the strain gauge in the geomagnetic detection device to deform. The magnetic field signal is converted into a current signal through a bridge circuit, and then amplified by an amplifier to convert it into a signal that the geomagnetic detection device can recognize. Since the detected magnetic field signal is a magnetic field vector signal in the XYZ directions, a single geomagnetic detection device can measure the three-coordinate magnetic field vector. There is no need to set up multiple geomagnetic detection devices to construct a plane for detection. Because constructing a plane between multiple detection devices involves installation errors and high design requirements, setting up a single geomagnetic detection device can achieve three-dimensional magnetic field vector detection, which not only greatly improves the overall detection accuracy, but also reduces costs. When there is material stuck between the crushing device and the bottom of the cup, the three-coordinate magnetic field vector of the superposition of the first and second detection magnets detected by the geomagnetic detection device will change. Based on the detected signal, it is determined that the crushing device is not placed flat in place, which effectively prevents the crushing device from starting when it is not placed in place, which would cause the crushing blade to tilt severely and hit the inner wall of the cup or cause the slurry in the cup to splash.

[0023] 2. Based on the fact that both the first and second detection magnets are located outside the driven magnet, and the geomagnetic detection device is located outside the first and second detection magnets; the driven magnet is located at the center of the pulverizing blade, and both the first and second detection magnets are located outside the driven magnet, placing the geomagnetic detection device radially outside the first and second detection magnets increases the distance between the geomagnetic detection device and the driven magnet on the horizontal plane. This reduces the influence of the magnetic field generated by the driven magnet on the geomagnetic detection device, thereby reducing the interference of the driven magnet on the result of the geomagnetic detection device detecting the three-coordinate magnetic field vector after the detection magnets are superimposed. This further ensures the accuracy of the result of whether the pulverizing device is installed correctly, and effectively prevents the pulverizing blade from tilting severely and hitting the inner wall of the cup or the slurry in the cup from splashing. Secondly, when the pulverizing device is not placed correctly and tilts, the geomagnetic detection device is located far from the center outside the detection magnet, which can amplify the detection result of the geomagnetic detection device, causing at least one coordinate value in the XYZ three coordinates to change significantly. The result detected by the geomagnetic detection device can be significantly amplified.

[0024] 3. Since the geomagnetic detection device, the first detection magnet, and the second detection magnet are all located on different horizontal planes, the three-dimensional magnetic field lines resulting from the superposition of the first and second detection magnets can all pass through the XYZ coordinates of the geomagnetic detection device. This effectively ensures that the geomagnetic detection device and the detection magnets form a significant angle in three-dimensional space, preventing the geomagnetic detection device from only detecting the magnetic field strength value in a single direction in the XYZ coordinates. This avoids the situation where the magnetic field vector of the three coordinates after the detection magnets are superimposed cannot be measured, further ensuring the accuracy of the result of whether the pulverizing device is installed correctly. This effectively prevents the pulverizing blade from tilting severely and hitting the inner wall of the cup or the slurry inside the cup from splashing.

[0025] 4. Since there are at least two geomagnetic detection devices, material jamming can occur at any point between the bottom of the blade holder housing and the bottom surface of the cup of the crushing device. If material jamming occurs on the side of the crushing device away from a certain geomagnetic detection device, the three-coordinate magnetic field vector will not change significantly after the first and second detection magnets on the side closer to that geomagnetic detection device are superimposed, making it difficult to detect whether the crushing device is installed properly in the cup. Therefore, when there are two or more geomagnetic detection devices, multiple detection points are distributed circumferentially on the outside of the detection magnets. Even if one geomagnetic detection device does not detect the abnormality, the other geomagnetic detection devices can compensate for the abnormal signal, thereby improving the detection accuracy of whether the crushing device is installed properly and avoiding missed or incorrect detection.

[0026] 5. Each time the pulverizing device is installed at the bottom of the cup, the mating areas of the first and second detection magnets are the same. Since the geomagnetic detection device, the first and second detection magnets are determined before the machine leaves the factory, a reference vector can be recorded. When the reference vector is obtained, the mating areas of the first and second detection magnets are also determined. During subsequent use, each time the pulverizing device is installed, the geomagnetic detection device will re-detect the three-coordinate magnetic field vector resulting from the superposition of the first and second detection magnets. The three-coordinate magnetic field vector collected during use will be compared with the reference vector to determine whether the pulverizing device is properly installed at the bottom of the cup. Therefore, the mating areas of the first and second detection magnets must be the same as those when the reference vector is obtained to ensure the accuracy of the comparison between the reference vector and the three-coordinate magnetic field vector detected during use, thereby reducing the error in detecting whether the pulverizing device is properly installed.

[0027] 6. Based on the fact that the first detection magnet is ring-shaped or near-ring-shaped and the second detection magnet is dot-shaped; since the user's placement of the crushing device inside the cup is random, when the first detection magnet is ring-shaped or near-ring-shaped, the user can ensure that the contact area of ​​the first and second detection magnets is the same no matter how far they rotate in the circumferential direction. This not only ensures the user's installation convenience, but also greatly improves the accuracy of the three-coordinate magnetic field vector detected by the geomagnetic detection device, thereby greatly improving the installation accuracy of the crushing device. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a cross-sectional schematic diagram of a food processing machine according to one embodiment of the present invention.

[0030] Figure 2 for Figure 1 The diagram shows the structure of the cup and the crushing device.

[0031] Figure 3 for Figure 1 The diagram shows the structure of the host and geomagnetic detection device.

[0032] Figure 4 for Figure 1 The diagram shows a partial cross-sectional view of the cup and the crushing device.

[0033] Figure 5This is a schematic diagram showing the change in the X-axis magnetic field strength of the geomagnetic detection system, which is raised between the crushing device and the bottom of the cup in the food processing machine of this utility model.

[0034] Figure 6 This is a schematic diagram showing the change in the Y-axis magnetic field strength of the geomagnetic detection system, which is raised between the crushing device and the bottom of the cup in the food processing machine of this utility model.

[0035] Figure 7 This is a schematic diagram showing the change in the Z-axis magnetic field strength of the geomagnetic detection system, which is raised between the crushing device and the bottom of the cup in the food processing machine of this utility model.

[0036] The names of the components shown in the diagram are as follows:

[0037] 1. Main unit; 11. Active magnet; 2. Cup body; 21. Inner cup; 22. Outer cup; 23. Cup bottom; 3. Crushing device; 31. Crushing blade; 32. Blade holder housing; 33. Driven magnet; 41. First detection magnet; 42. Second detection magnet; 5. Geomagnetic detection device. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] In the prior art, a reliable food processing machine is disclosed, including a rotating base for a blade assembly equipped with a first magnetic element, and a motor equipped with a second magnetic element to drive the first magnetic element. The first and second magnetic elements are two ring-shaped magnet groups, achieving air-to-air transmission between the rotating base and the motor. The motor drives the blade assembly to rotate via the magnetic elements. The blade assembly is detachably mounted on a positioning shaft, which not only facilitates the assembly and disassembly of the blade assembly, but also ensures precise alignment between the blade assembly and the motor through the cooperation of the first and second magnetic elements, reducing transmission errors. However, a technical problem exists in this solution: the blade assembly is driven by the attraction of the first and second magnetic elements, which are arranged vertically. If material gets stuck between the blade assembly and the bottom of the cup, the distance between the first and second magnetic elements increases, preventing the motor and the blade assembly from effectively transmitting torque via magnetic transmission. Therefore, material stuck between the grinding device and the bottom of the cup prevents the blade assembly from being placed flat inside the cup, hindering its normal and stable magnetic rotation for material processing. This poses safety hazards such as liquid turbulence and slurry splashing.

[0040] In existing technologies, linear Hall effect sensors may be used to detect whether a knife assembly is placed flat. The knife assembly contains an upper magnetic field, and the cup body contains a lower magnetic field that engages with the upper magnetic field to prevent the knife assembly from spilling out when the cup is lifted. The linear Hall effect sensor is positioned within the horizontal projection range of the upper and lower magnetic fields. It can detect magnetic field lines that converge vertically. Since the magnetic force between magnets is greatly affected by distance, the linear Hall effect sensor can determine whether the knife assembly is placed flat based on the detected distance and magnetic field strength. However, linear Hall effect sensors can only detect the magnetic field perpendicular to their mounting surface. This necessitates surface mounting of the linear Hall effect sensor, and the mounting surface must be flush with the assembly surface of the knife assembly for accurate detection. Furthermore, the arrangement of the linear Hall effect sensors must ensure at least three detection points form a reliable plane for detection, placing high demands on installation and structural design.

[0041] To address the safety hazards such as liquid turbulence and slurry splashing caused by the blade assembly not being able to be placed flat within the cup body 2 in existing technologies, please refer to... Figures 1-7 The present invention provides a food processing machine, including a main unit 1, a cup body 2, a crushing device 3, a geomagnetic detection device 5, a driven magnet 33, an active magnet 11, a first detection magnet 41, and a second detection magnet 42.

[0042] A cup body 2, mounted on the main unit 1, is used to hold slurry. A pulverizing device 3 is detachably disposed at the bottom of the cup body 2. The pulverizing device 3 includes a pulverizing blade 31, a blade holder housing 32, and a driven magnet 33 disposed within the blade holder housing 32 to drive the pulverizing blade. A first detection magnet 41 is also disposed within the blade holder housing 32, and a second detection magnet 42 that cooperates with the first detection magnet 41 is disposed within the cup body 2. A geomagnetic detection device 5 is disposed at a position offset from the center of the pulverizing blade 31. The projection of the driven magnet 33 on the horizontal plane does not cover the first detection magnet 41 and the second detection magnet 42, and the projections of the first detection magnet 41 and the second detection magnet 42 on the horizontal plane do not cover the geomagnetic detection device 5. The device detects the three-coordinate magnetic field vector superimposed by the first detection magnet 41 and the second detection magnet 42 to determine whether the pulverizing device 3 is properly installed at the bottom of the cup body 2.

[0043] It should be noted that the food processing machine of this application can be applied to both axial magnetic flux and magnetic transmission.

[0044] The magnetic transmission is in the form of a magnetic coupling: preferably, the active magnet and the driven magnet are set as a disk, and the driven disk and the active disk are driven by non-contact transmission. The torque generated by the magnetic field generated by the active disk drives the driven disk to rotate, and the driven disk carries the crushing blade to rotate, so that the crushing blade crushes the material.

[0045] Structure of axial magnetic flux: For example, in the applicant's prior patent CN202520309627.9, a drive device for a food processing machine, the drive device includes a stator core and a coil winding. The function of the drive device is the same as that of the active magnet, used to drive the driven disk to rotate. The stator core and the coil winding are axially distributed with the crushing device along the rotation axis of the crushing blade. When energized, the coil winding generates a changing magnetic field. The driven disk rotates under the drive of the changing magnetic field and drives the crushing blade to rotate synchronously.

[0046] It is possible that the first detection magnet 41 and the driven magnet 33 are on the same plane, while the mounting planes of the second detection magnet 42 and the active magnet 11 can be misaligned and not on the same plane.

[0047] It should also be noted that "the crushing device 3 is installed in place at the bottom of the cup body 2" means that the crushing device 3 is installed inside the cup body 2, the bottom surface of the crushing device 3 fits stably with the bottom of the cup body 2, there is no material separation in between, and no abnormal material jamming. The bottom surface of the crushing device 3 is generally horizontal, almost consistent with the horizontal state of the cup bottom. "The geomagnetic detection device 5 is off-center from the crushing blade 31" means that it can be located at any position other than the center of the crushing blade 31, and it must not be covered by the projection of the driven magnet 33, the first detection magnet 41, and the second detection magnet 42 on the horizontal plane. If it is located at the center of the crushing blade 31, even a slight sway of the centrally located magnet will cause a large fluctuation, resulting in inaccurate detection of whether the crushing device 3 is horizontally placed.

[0048] In this application, as Figures 1-2 As shown, the cup body 2 includes an inner cup 21, a cup bottom 23 located at the bottom of the inner cup 21, and an outer cup 22 fitted over the inner cup 21 and the cup bottom. The inner cup 21 is used to hold the liquid. A second detection magnet 42 is located inside the cup bottom 23, and the second detection magnet 42 is located directly below the first detection magnet 41. The cup bottom 23 can be a metal base. The inner cup 21 and the outer cup 22 can both be made of glass, or they can be metal cups, etc. The inner body 21 extends upward to form the mouth of the cup body 2. Of course, in other embodiments, the cup body can be a single-layer glass cup body or a metal cup body, and a metal base located at the bottom of the cup body. The second detection magnet is located inside the metal base, and the second detection magnet is located directly below the first detection magnet.

[0049] Understandably, when the pulverizing device 3 is removed from the cup body 2, the detection device can only detect the three-coordinate magnetic field vector of the second detection magnet 42 and determine that the pulverizing device 3 is not installed inside the cup body 2. When the blade assembly is placed into the cup body 2, the first detection magnet 41 and the second detection magnet 42 will superimpose to form a complete magnetic field. The geomagnetic detection device 5 will detect a three-dimensional three-coordinate magnetic field vector in the XYZ direction, which can detect both the magnetic field strength and the magnetic field direction. Each time the pulverizing device 3 is installed, the three-coordinate magnetic field vector superimposed by the first detection magnet 41 and the second detection magnet 42 is detected to determine whether the pulverizing device 3 is installed in place at the bottom of the cup body 2, thereby locating the placement state of the pulverizing device 3. When the magnetic field passes through the XYZ directions, it will cause the strain gauge in the geomagnetic detection device 5 to deform. The magnetic field signal is converted into a current signal through a bridge circuit, then amplified by an amplifier, and converted into an AD signal that the geomagnetic detection device 5 can recognize for its use. The magnetic field signal detected here is the magnetic field vector signal in the XYZ directions. Meanwhile, a single geomagnetic detection device 5 can measure the three-coordinate magnetic field vector without the need to set up multiple geomagnetic detection devices 5 to construct a plane for detection. Since constructing a plane between multiple detection devices involves installation errors and high design requirements, setting up a single geomagnetic detection device 5 can achieve three-dimensional magnetic field vector detection, which not only greatly improves the overall detection accuracy but also reduces costs. Since the magnetic field detection method is the synchronous amplification of the strain gauge detection in the geomagnetic detection device 5, the overall detection accuracy is more than 20 times that of the linear Hall effect.

[0050] The geomagnetic detection device 5 detects the three-coordinate magnetic field vector of the superimposed first detection magnet 41 and the second detection magnet 42 to determine whether the bottom surface of the blade holder housing 32 is placed flat on the bottom of the cup. When there is material stuck between the crushing device 3 and the bottom of the cup, the three-coordinate magnetic field vector of the superimposed first detection magnet 41 and the second detection magnet 42 detected by the geomagnetic detection device 5 will change. Based on the detected signal, it is determined that the crushing device 3 is not placed flat in place, which effectively prevents the crushing device 3 from starting when it is not placed in place, which would cause the crushing blade 31 to tilt severely and hit the inner wall of the cup body 2 or cause the slurry in the cup body 2 to splash.

[0051] Specifically, before the machine leaves the factory, the magnetic field of the whole machine is calibrated. Since the geomagnetic detection device 5, the first detection magnet 41 and the second detection magnet 42 are determined before leaving the factory, the three-coordinate magnetic field vector of the superimposed first detection magnet 41 and the second detection magnet 42 can be recorded at the geomagnetic detection device 5 to obtain the reference vector. During use, each time the user installs the crushing device 3, the three-coordinate magnetic field vector of the superimposed first detection magnet 41 and the second detection magnet 42 will be re-detected. The three-coordinate magnetic field vector collected during use is compared with the reference vector to determine whether the crushing device 3 is installed in place at the bottom of the cup body 2. If it is different from the reference vector, the crushing device 3 is not installed in place at the bottom of the cup body 2, and vice versa. Therefore, the three-coordinate magnetic field vector of the magnet detected by the geomagnetic detection device 5 can be used to determine whether the crushing device 3 is placed in place.

[0052] Those skilled in the art generally believe that the magnetic field generated by the driven magnet itself will be superimposed on the three-coordinate magnetic field vector detected by the geomagnetic detection device. In other words, there is mutual interference between the driven magnet and the detection magnet. Furthermore, the driven magnet rotates during operation, resulting in an uncertain dynamic magnetic field. The geomagnetic detection device cannot directly detect the driven magnet to determine whether the crushing device is installed correctly. Given the mutual interference between the detection magnet and the driven magnet, those skilled in the art would not easily conceive of adding a detection magnet to allow the geomagnetic detection device to detect the three-coordinate magnetic field vector superimposed by the detection magnet. However, this application incorporates both a driven magnet and a detection magnet, ensuring that they do not interfere with each other, thus overcoming technical bias. Secondly, the projections of the first and second detection magnets on the horizontal plane do not cover the geomagnetic detection device, preventing the geomagnetic detection device from being unable to detect the magnetic field strength value in only one direction of the XYZ coordinate system at the magnetic field lines of the detection magnet. This avoids the situation where the three-coordinate magnetic field vector superimposed by the detection magnet cannot be measured, further ensuring the accuracy of the result regarding whether the crushing device 3 is installed correctly. Since the projections of the driven magnets onto the horizontal plane do not cover the first and second detection magnets, excessive magnetic field overlap between the driven and detection magnets on any one of the XYZ axes is avoided. This prevents the magnetic field strength on that axis from being too high, which would significantly interfere with the accuracy of the geomagnetic detection device in detecting the magnetic field on that axis. Furthermore, existing technologies using linear Hall effect sensors can only detect magnetic field strength in a single direction and cannot determine the magnetic field direction as determined by three coordinates. Since existing technologies differ from the techniques used in this application, those skilled in the art would not readily conceive of using a geomagnetic detection device based on linear Hall effect sensors.

[0053] It should be noted that when the crushing device 3 is placed flat in the position, the geomagnetic detection device 5 detects that the superimposed three-coordinate magnetic field vector is between the maximum and minimum magnetic field vectors of the reference vector; when the crushing device 3 is not placed flat in the position, and there are multiple geomagnetic detection devices 5, the superposition of the three-coordinate magnetic field vectors of the first detection magnet 41 and the second detection magnet 42 detected by at least one of the geomagnetic detection devices 5 is greater than the maximum magnetic field vector.

[0054] As a preferred embodiment, such as Figure 1-3 As shown, the bottom of the cup body 2 is provided with a cup holder, and the cup body 2 is detachably installed on the main unit 1 through the cup holder. The second detection magnet 42 is installed in the cup holder, and the geomagnetic detection device 5 is installed in the main unit 1. It can be understood that the first detection magnet 41 and the second detection magnet 42 superimpose a complete spherical magnetic field. Since the geomagnetic detection device 5 can detect the XYZ three directions, installing the geomagnetic detection device 5 in the main unit 1 can still detect the three-coordinate magnetic field vector after the superposition of the detection magnets. Moreover, the geomagnetic detection device 5 is fixed in position in the main unit 1 and will not change with the random placement of the user's crushing device 3, which helps to improve the accuracy of detection.

[0055] As a preferred embodiment, such as Figures 1-4 As shown, both the active magnet 11 and the driven magnet are disks. The first detection magnet 41 and the second detection magnet 42 are located outside the driven magnet 33 and the active magnet 11. The geomagnetic detection device 5 is located outside the first detection magnet 41 and the second detection magnet 42.

[0056] It is understood that the transmission magnet has an active magnet and a driven magnet that cooperates with the active magnet. The driven magnet 33 and the active magnet 11 are located at the center of the crushing blade 31. The first detection magnet 41 and the second detection magnet 42 are both located outside the driven magnet 33 and the active magnet 11. The geomagnetic detection device 5 is located radially outside the first detection magnet 41 and the second detection magnet 42. This increases the distance between the geomagnetic detection device 5 and the transmission magnet on the horizontal plane, which can reduce the influence of the magnetic field generated by the transmission magnet on the geomagnetic detection device 5. This reduces the interference of the transmission magnet on the result of the three-coordinate magnetic field vector of the geomagnetic detection device 5 after the detection magnets are superimposed. This further ensures the accuracy of the result of whether the crushing device 3 is installed in place and effectively prevents the crushing blade 31 from being severely tilted and hitting the inner wall of the cup body 2 or the slurry in the cup body 2 from splashing.

[0057] Secondly, when the crushing device 3 is tilted due to improper placement, the geomagnetic detection device 5 is located far from the center outside the detection magnet. This amplifies the detection results of the geomagnetic detection device 5, causing at least one coordinate value in the XYZ coordinate system to change significantly. The results detected by the geomagnetic detection device 5 are significantly amplified and exceed the reference vector. This can be illustrated by the following example: taking two geomagnetic detection devices 5 as an example.

[0058] like Figures 5-7 As shown, four test points (A, B, C, and D) are set at the bottom of the crushing device 3, distributed circumferentially along the bottom of the crushing device 3. Test points AB are farther from the first geomagnetic detection device 5, test points CD are closer to the first geomagnetic detection device 5, test points AB are closer to the second geomagnetic detection device 5, and test points CD are farther from the second geomagnetic detection device 5. These four test points are raised by 2mm. Taking the first geomagnetic detection device 5 as an example, if the three-coordinate magnetic field strength value measured by the first detection magnet 41 and the second detection magnet 42 is still between the maximum magnetic field strength (X / Y / Z - program max) and the minimum magnetic field strength (X / Y / Z - program min), it is confirmed that the crushing device 3 is properly installed at the bottom of the cup body 2. The detection of the superimposed three-coordinate magnetic field vector by the second geomagnetic detection device 5 is obtained similarly, and will not be described further.

[0059] like Figures 5-7 As shown, four test points (A, B, C, and D) are set at the bottom of the crushing device 3, distributed circumferentially along the bottom of the crushing device 3. Test points AB are farther from the first geomagnetic detection device 5, test points CD are closer to the first geomagnetic detection device 5, test points AB are closer to the second geomagnetic detection device 5, and test points CD are farther from the second geomagnetic detection device 5. These four test points are raised by 4mm. Taking the first geomagnetic detection device 5 as an example, the X / Y axis magnetic field strength value measured by the first detection magnet 41 and the second detection magnet 42 is still between the maximum magnetic field strength value (X / Y-program max) and the minimum magnetic field strength value (X / Y-program min). However, the Z axis magnetic field strength value measured by the first geomagnetic detection device 5 exceeds the maximum magnetic field strength value (Z-program max), thus determining that the crushing device 3 is not properly installed at the bottom of the cup body 2. The same logic applies to the detection of the superimposed three-coordinate magnetic field vector by the second geomagnetic detection device 5, which will not be elaborated further.

[0060] like Figures 5-7As shown, four test points A, B, C, and D are set at the bottom of the crushing device 3, distributed circumferentially along the bottom of the crushing device 3. Test points A and B are farther from the first geomagnetic detection device 5, test points C and D are closer to the first geomagnetic detection device 5, test points A and B are closer to the second geomagnetic detection device 5, and test points C and D are farther from the second geomagnetic detection device 5. These four test points are raised by 6mm. Taking the first geomagnetic detection device 5 as an example, the X / Y axis magnetic field strength value measured by the first detection magnet 41 and the second detection magnet 42 is still between the maximum magnetic field strength value (X / Y-program max) and the minimum magnetic field strength value (X / Y-program min). However, the Z axis magnetic field strength value measured by the first geomagnetic detection device 5 exceeds the maximum magnetic field strength value (Z-program max), thus determining that the crushing device 3 is not properly installed at the bottom of the cup body 2. The same logic applies to the detection of the superimposed three-coordinate magnetic field vector by the second geomagnetic detection device 5, which will not be elaborated further.

[0061] As can be seen from the above examples, in engineering applications, when material is stuck at the bottom of the crushing device 3 and the cup 2, if the crushing device 3 is tilted and raised by 2mm or less, it can be considered that the crushing device 3 is installed flat and in place. This application uses a 2mm or less elevation of the crushing device 3 due to material jamming as the dividing line; the geomagnetic detection device 5 can ignore this anomaly, and it will hardly cause safety hazards such as liquid turbulence or slurry splashing. When the crushing device 3 is tilted and raised by more than 2mm, the geomagnetic detection device 5 can detect obvious abnormalities of improper installation of the crushing device 3, which will cause safety hazards such as liquid turbulence and slurry splashing, requiring an alarm to be issued and the entire machine to stop working.

[0062] Of course, in other embodiments, when the magnetic field strength of the detection magnet is greater than that of the transmission magnet, the projection of the geomagnetic detection device 5 onto the horizontal plane can also be set between the transmission magnet and the detection magnet.

[0063] As a preferred embodiment, such as Figure 1 As shown, the geomagnetic detection device 5 is located on a different horizontal plane from the first detection magnet 41 and the second detection magnet 42. This ensures that the three-dimensional magnetic field lines resulting from the superposition of the first detection magnet 41 and the second detection magnet 42 can pass through the XYZ coordinates of the geomagnetic detection device 5. This effectively ensures that the geomagnetic detection device 5 and the detection magnets form a significant angle in three-dimensional space, preventing the geomagnetic detection device 5 from only detecting the magnetic field strength value in a single direction in the XYZ coordinates. This also avoids the situation where the magnetic field vector of the three coordinates after the detection magnets are superimposed cannot be measured, further ensuring the accuracy of the result of whether the crushing device 3 is installed in place. This effectively prevents the crushing blade 31 from being severely tilted and impacting the inner wall of the cup body 2 or the slurry inside the cup body 2 from splashing.

[0064] It should be noted that the number of geomagnetic detection devices 5 can be set to one or more.

[0065] In one embodiment, there are at least two geomagnetic detection devices 5. It is understood that material jamming may occur at any position between the bottom of the blade holder housing 32 of the crushing device 3 and the bottom surface of the cup body 2. If material jamming occurs on the side of the crushing device 3 away from a certain geomagnetic detection device 5, the three-coordinate magnetic field vector will not change significantly after the first detection magnet 41 and the second detection magnet 42 on the side closer to the geomagnetic detection device 5 are superimposed, making it difficult to detect whether the crushing device 3 is installed in place in the cup body 2. Therefore, when there are two or more, multiple geomagnetic detection devices 5 have multiple detection points distributed circumferentially on the outside of the detection magnets. Even if a certain geomagnetic detection device 5 does not detect the abnormality, other geomagnetic detection devices 5 can compensate for the abnormal signal, thereby improving the detection accuracy of whether the crushing device 3 is installed in place and avoiding missed detections or false detections.

[0066] It should be noted that when there are two or more geomagnetic detection devices 5, there are multiple ways to distribute them along the detection magnets. They can be arranged symmetrically in pairs along the center of the crusher 31, or the line connecting the projections of the two pairs on the horizontal plane passes through the center of the crusher 31, or the line connecting the two pairs with the projection of the center of the crusher 31 on the horizontal plane forms an angle.

[0067] In another embodiment, the geomagnetic detection device 5 consists of at least two devices, and the line connecting them in the horizontal projection passes through the center of the crushing blade 31. Alternatively, the geomagnetic detection devices 5 can be arranged symmetrically in pairs along the center of the crushing blade 31 in the horizontal projection. Or, the geomagnetic detection devices 5 can be located in pairs on opposite sides of the crushing device 3 in the horizontal projection, but the distance from the crushing device 3 in the horizontal projection varies. The technical effect is similar to that of the previous embodiment, and will not be described again.

[0068] In yet another embodiment, such as Figure 1As shown, there are two geomagnetic detection devices 5. The line connecting the projections of the two geomagnetic detection devices 5 onto the horizontal plane can pass through the center of the crusher blade 31. Alternatively, the two geomagnetic detection devices 5 can be symmetrically arranged along the center of the crusher blade 31. Or, the line connecting the projections of the two geomagnetic detection devices 5 onto the horizontal plane and the center of the crusher blade 31 can form an angle. The more geomagnetic detection devices 5 there are, the higher the cost. Setting up two geomagnetic detection devices 5 can effectively reduce costs. Secondly, if material jamming occurs on the side opposite to the horizontal projection of the crushing device 3 and the first geomagnetic detection device 5, that is, on the horizontal projection, the geomagnetic detection device is located on the far side of the material jamming in the crushing device 3, and the three-coordinate magnetic field vector of the first detection magnet 41 and the second detection magnet 42 near the first geomagnetic detection device 5 does not change significantly, then on the horizontal projection, the second geomagnetic detection device 5 will always be closer to the side of the crushing device 3 where the material is jammed than the first geomagnetic detection device 5, and will detect a significant change in the three-coordinate magnetic field vector of the first detection magnet 41 and the second detection magnet 42 near the second geomagnetic detection device 5. Even if the first geomagnetic detection device 5 does not detect the abnormality, the second geomagnetic detection device 5 can compensate for the abnormal signal, ensuring that any jamming in the crushing device 3 can be detected by the geomagnetic detection device 5. Therefore, it avoids missed detections and false detections, thereby improving the accuracy of detecting whether the crushing device 3 is installed correctly.

[0069] It should be noted that the first detection magnet is fixed inside the blade holder housing, while the second detection magnet is located inside the cup body. The detection magnets can be used solely for detection by the geomagnetic detection device 5. In this case, the first detection magnet 41 and the second detection magnet 42 can have the same polarity or opposite polarities. Regardless of whether the polarities of the first and second detection magnets are the same or opposite, the geomagnetic detection device detects a change in the superimposed XYZ three-coordinate magnetic field vector, with the greatest impact on the Y-axis magnetic field change. When the polarities of the first and second detection magnets are the same, the magnetic field lines both move outwards; when the polarities are opposite, the magnetic field lines move from one detection magnet to the other, for example, the magnetic field lines from the first detection magnet move towards the second detection magnet. As mentioned above, whether the polarities are the same or opposite is merely a difference in the reference vector set at the factory. When the polarities of the first detection magnet 41 and the second detection magnet 42 are the same on opposite sides, after the first and second detection magnets are fixedly installed, the geomagnetic detection device determines whether the pulverizing device is properly installed at the bottom of the cup body by detecting the superimposed three-coordinate magnetic field vector of the first and second detection magnets. It can also be used for both detection and attraction of the crushing device 3. When the polarities of the first detection magnet 41 and the second detection magnet 42 are opposite on opposite sides, the detection magnets can not only be used to allow the geomagnetic detection device to detect the installation of the cup body, but also to attract the crushing device 3. This is to prevent the crushing device 3 from being poured out of the cup body 2 when the cup is lifted. At this time, the polarities of the first detection magnet 41 and the second detection magnet 42 are opposite on opposite sides, allowing the two to attract each other.

[0070] In a preferred embodiment, the polarities of the first detection magnet 41 and the second detection magnet 42 are opposite on opposite sides. The detection magnets are used not only to allow the geomagnetic detection device 5 to detect the three-coordinate magnetic field vector and to determine whether the crushing device 3 is installed in place at the bottom of the cup body 2; at the same time, when the polarities of the two detection magnets are opposite on opposite sides, the second detection magnet 42 is located below the first detection magnet 41, and the first detection magnet 41 and the second detection magnet 42 can be attracted together from above and below to prevent the crushing device 3 from being poured out of the cup body 2 when the cup is lifted.

[0071] To determine whether the crushing device 3 is installed correctly, the mating areas of the first detection magnet 41 and the second detection magnet 42 are the same each time the crushing device 3 is installed at the bottom of the cup body 2.

[0072] Understandably, since the geomagnetic detection device 5, the first detection magnet 41, and the second detection magnet 42 are all determined before the machine leaves the factory, a reference vector can be recorded. When the reference vector is acquired, the mating area of ​​the first detection magnet 41 and the second detection magnet 42 is also determined. Later, during user operation, each time the pulverizing device 3 is installed, the geomagnetic detection device 5 will re-detect the three-coordinate magnetic field vector superimposed by the first detection magnet 41 and the second detection magnet 42. The three-coordinate magnetic field vector collected during use will be compared with the reference vector to determine whether the pulverizing device 3 is properly installed at the bottom of the cup body 2. Therefore, the mating area of ​​the first detection magnet 41 and the second detection magnet 42 must be the same as the mating area when the reference vector was acquired. Otherwise, the accuracy of the comparison between the reference vector and the three-coordinate magnetic field vector detected during use will be affected, leading to errors in determining whether the pulverizing device 3 is properly installed at the bottom of the cup body 2.

[0073] It should be noted that the detection magnet can be in various shapes, such as ring, arc, or dot.

[0074] In a preferred embodiment, at least one of the first detection magnet 41 and the second detection magnet 42 is ring-shaped or quasi-ring-shaped; if the first detection magnet is ring-shaped, the second detection magnet 42 is located below the first detection magnet 41, and the projected area of ​​the second detection magnet 42 on the first detection magnet 41 is always the same, ensuring that the mating area of ​​the first detection magnet 41 and the second detection magnet 42 is always the same.

[0075] In other embodiments, if both the first detection magnet 41 and the second detection magnet are dot-shaped or arc-shaped, since the user's placement of the crushing device 3 is random, alignment marks can be set on the crushing device 3 or the cup body 2 to ensure that the mating area of ​​the first detection magnet 41 and the second detection magnet 42 is always the same, and the vertical alignment of the first detection magnet 41 and the second detection magnet 42 remains unchanged each time they are installed.

[0076] More specifically, the first detection magnet 41 is ring-shaped or near-ring-shaped, and the second detection magnet 42 is dot-shaped. Since the user's placement of the pulverizing device 3 inside the cup body 2 is random, when the first detection magnet is ring-shaped or near-ring-shaped, the user can rotate it to any angle in the circumferential direction without ensuring that the mating area of ​​the first detection magnet 41 and the second detection magnet 42 is the same. This not only ensures the user's installation convenience but also greatly improves the accuracy of the three-coordinate magnetic field vector detected by the geomagnetic detection device 5, thereby greatly improving the installation accuracy of the pulverizing device 3.

[0077] In addition to the preferred embodiments described above, the technical solutions protected by this utility model are not limited to the above embodiments. It should be noted that the combination of multiple technical solutions in any one embodiment, as well as the combination of technical solutions in any one embodiment with technical solutions in one or more other embodiments, are within the protection scope of this utility model. Although this utility model has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A food processing machine, characterized in that, include: Host; The cup body, installed on the main unit, is used to hold the slurry; The pulverizing device is detachably disposed at the bottom of the cup body. The pulverizing device includes a pulverizing blade, a blade holder housing, and a driven magnet disposed in the blade holder housing to drive the pulverizing blade. The blade holder housing is also provided with a first detection magnet. The cup body is provided with a second detection magnet that cooperates with the first detection magnet. The second detection magnet is disposed below the first detection magnet. A geomagnetic detection device for detecting the three-coordinate magnetic field vector after the superposition of the first and second detection magnets. The geomagnetic detection device is located at a position off from the center of the crusher. The projection of the driven magnet on the horizontal plane does not cover the first and second detection magnets, and the projection of the first and second detection magnets on the horizontal plane does not cover the geomagnetic detection device.

2. The food processing machine according to claim 1, characterized in that, The first detection magnet and the second detection magnet are both located outside the driven magnet, and the geomagnetic detection device is located outside the first detection magnet and the second detection magnet.

3. The food processing machine according to claim 1, characterized in that, The geomagnetic detection device is located on a different horizontal plane from both the first and second detection magnets.

4. The food processing machine according to claim 1, characterized in that, The geomagnetic detection device comprises at least two devices.

5. The food processing machine according to claim 1, characterized in that, The geomagnetic detection device consists of at least two devices, and the line connecting them in the horizontal plane projection passes through the center of the shredder.

6. The food processing machine according to claim 4 or 5, characterized in that, There are two geomagnetic detection devices.

7. The food processing machine according to claim 1, characterized in that, The polarities of the first detection magnet and the second detection magnet are opposite on opposite sides.

8. The food processing machine according to claim 1, characterized in that, At least one of the first detection magnet and the second detection magnet is ring-shaped or ring-like.

9. The food processing machine according to claim 8, characterized in that, The first detection magnet is ring-shaped or near-ring-shaped, and the second detection magnet is dot-shaped.

10. The food processing machine according to claim 1, characterized in that, The cup body has a cup holder at the bottom, and the cup body is detachably installed on the main unit via the cup holder. The second detection magnet is installed in the cup holder, and the geomagnetic detection device is installed in the main unit.

Images