An intelligently controlled juicer

Abstract

The present invention relates to an intelligently controlled juicer, comprising a hopper, a pre-cutting assembly, an extrusion assembly, an extrusion screw, and a motor. When the motor is detected to have decreased from satisfying the workload to not satisfying the workload, the motor is controlled to rotate in the reverse direction and then resumes forward rotation. When forward rotation resumes, it is detected that the motor still does not satisfy the workload, and it is determined that the material has been extruded and the machine stops working. When the pre-cutting assembly and the extrusion screw resume forward rotation, it is detected that the motor resumes satisfying the workload and it is determined that the motor has decreased from satisfying the workload to not satisfying the workload, the tip of the machine pierces the material and the material has been detached during the reversal of the pre-cutting assembly, and the pre-cutting assembly and the extrusion screw continue to rotate forward to process the material. The technical solution of the present invention distinguishes whether the motor is in an idle state after the juice extraction is normally completed when the workload is reduced from satisfying the workload to not satisfying the workload during forward rotation, or in an idle state where the material pierces the tip of the cutting edge, so as to ensure that the juice extraction work is completed normally.

Description

Technical Field

[0001] The present invention relates to the technical field of food processing machines, in particular to an intelligently controlled juicer. Background Art

[0002] Juicers, developed from conventional juicers, primarily convert fruit into juice for enhanced taste and ease of consumption. Compared to a juicer, juicers extract juice through a low-speed screw extrusion process. The lower the speed, the better. This process extracts the juice slowly, like squeezing a towel, without damaging the fruit's cellular structure and preserving its nutrients. Furthermore, this low-speed juice extraction doesn't generate high heat, thus avoiding the problem of heat-induced oxidation. In related technologies, a motor combined with a reduction mechanism outputs slow, high-torque output to meet the high torque requirements of the screw for slow extraction.

[0003] In order to achieve better juicing effect, the prior art discloses a technical solution in which a feed barrel is provided with a pre-cutting component and a screw is installed below the feed barrel. For example, the applicant's patent application number CN202323192008.6 discloses that a first cutting edge and a second cutting edge are installed in the feed barrel, the first cutting edge extends along the upper surface of the bottom plate of the feed barrel, and the second cutting edge bends and extends upward. When the material is put into the feed barrel, the second cutting edge cooperates with the first blocking portion of the inner wall of the feed barrel to complete a pre-cutting, and cuts the whole fruit material put into the feed barrel into large pieces of material; the material continues to run downward and the first cutting edge completes a second pre-cutting of the material, cutting the large pieces of material into small pieces of material. The material is cut into small pieces of material before entering the screw by the first cutting edge and the second cutting edge arranged in the feed barrel, which greatly improves the juice squeezing efficiency of the screw. However, the technical problem with the above-mentioned technical solution is that, although the installation of the first and second cutting edges in the feed barrel to pre-cut the material greatly improves the efficiency of the screw in squeezing out juice, the second cutting edge has a relatively sharp upper end due to its upward spiral curvature. Therefore, when whole fruit or large pieces of material are placed in the large-diameter feed barrel, the upper end of the second cutting edge may penetrate the middle part of the material or other parts of the material that are easily penetrated. At this time, the load changes from the normal working load to the idling load (from large to small). The idling load after the normal completion of juicing also changes from the normal juicing working load to the idling load (from large to small). Since both changes are from a large load to a small load, the machine may idle after the material is penetrated and mistakenly stop because the juicing is completed, ultimately leaving whole fruit or large pieces of material in the feed barrel. It is understandable that some patents in the prior art also disclose technical solutions in which the feed barrel is equipped with a pre-cutting assembly and the screw is installed below the feed barrel.

[0004] Therefore, there is the following technical problem: since it is difficult to distinguish between the idle load after the normal completion of juicing and the idle load when the material penetrates the cutting edge tip, it is easy to cause the whole fruit or large pieces of material to remain in the feeding barrel. Summary of the Invention

[0005] The purpose of the present invention is to provide an intelligently controlled juicer to solve the technical problem that whole fruits or large pieces of materials may remain in the feed barrel due to the difficulty in distinguishing between the idle load after normal juicing and the idle load caused by the material piercing the tip of the cutting edge.

[0006] In order to solve the above technical problems, the present invention provides an intelligently controlled juicer, comprising:

[0007] A hopper for holding whole fruit materials and provided with a pre-cutting assembly, wherein the pre-cutting assembly includes a cutting edge with a tip portion extending spirally upward, and the pre-cutting assembly rotates forward to cut the material with the tip portion;

[0008] An extrusion assembly is disposed below the hopper and includes an extrusion screw drivingly connected to the pre-cutting assembly;

[0009] a motor driving the pre-cutting assembly and the extrusion screw to rotate forward, and controlling the motor to drive the pre-cutting assembly and the extrusion screw to rotate in the reverse direction for a first preset time period and then resume forward rotation when detecting that the motor decreases from satisfying the workload to not satisfying the workload;

[0010] The pre-cutting assembly and the extrusion screw resume forward rotation, and it is detected that the motor does not maintain sufficient workload, and it is determined that the material has been extruded and the operation is stopped;

[0011] The pre-cutting assembly and the extrusion screw resume forward rotation, and when it is detected that the motor resumes to meet the workload and it is determined that the motor has decreased from meeting the workload to not meeting the workload, the tip pierces the material and the material has been detached during the reversal process of the pre-cutting assembly, and continues to drive the pre-cutting assembly and the extrusion screw to rotate forward to process the material.

[0012] Preferably, the tip portion is provided with a material backing surface convex radially outward, and the inner wall of the hopper is provided with a blocking rib.

[0013] The motor drives the pre-cutting assembly to rotate in the opposite direction for the first preset time. During the process of rotating from the back material surface to the outer end of the tip portion, the radial distance between the pre-cutting assembly and the blocking rib gradually decreases to separate the material that has penetrated into the tip portion.

[0014] Preferably, after the pre-cutting assembly and the extrusion screw resume forward rotation for a second preset time, it is detected that the motor resumes to meet the extrusion load,

[0015] When it is determined that the motor is reduced from satisfying the workload to not satisfying the workload, the tip pierces the material and the material has been separated during the reversal process of the pre-cutting component, and continues to drive the extrusion screw to rotate forward to extrude the material.

[0016] Preferably, the pre-cutting assembly and the extrusion screw resume forward rotation for a third preset time, and it is detected that the motor resumes to meet the cutting load.

[0017] When it is determined that the motor is reduced from satisfying the workload to not satisfying the workload, the tip pierces the material and the material has been separated during the reversal process of the pre-cutting component, and continues to drive the extrusion screw to rotate forward to extrude the material.

[0018] Preferably, the pre-cutting assembly and the extrusion screw are driven to rotate forward, and when the motor is detected to decrease from satisfying the workload to not satisfying the workload, the motor is immediately controlled to drive the pre-cutting assembly and the extrusion screw to rotate in the opposite direction for the first preset time.

[0019] Preferably,

[0020] After continuing to drive the pre-cutting assembly and the extrusion screw to rotate forward to process the material, the intelligently controlled juicer further includes:

[0021] detecting that the motor is reduced from satisfying the workload to not satisfying the workload again, controlling the motor to drive the pre-cutting assembly and the extrusion screw to rotate in the reverse direction for a first preset time period, and then resuming forward rotation;

[0022] It is detected that the motor does not maintain the working load, and it is determined that the material has been processed and the motor stops working.

[0023] Preferably, after continuing to drive the pre-cutting assembly and the extrusion screw to rotate forward to process the material, the intelligently controlled juicer further includes:

[0024] detecting that the motor is reduced from satisfying the workload to not satisfying the workload again, controlling the motor to drive the pre-cutting assembly and the extrusion screw to rotate in the reverse direction for a first preset time period, and then resuming forward rotation;

[0025] When it is detected that the motor has resumed meeting the workload and it is determined that the motor has decreased from meeting the workload to not meeting the workload again, the tip pierces the material again and the material has been detached during the reversal process of the pre-cutting component, and continues to drive the pre-cutting component and the extrusion screw to rotate forward to process the material.

[0026] Preferably, when entering the extrusion stage of driving the extrusion screw to rotate forward to extrude the material, the extrusion screw continues to rotate forward until the extrusion stage is completed, the detection motor decreases from satisfying the workload to not satisfying the workload, and the motor is controlled to drive the pre-cutting assembly and the extrusion screw to rotate in the opposite direction for a first preset time.

[0027] Preferably, the intelligently controlled juicer further comprises a voltage detection module and a current detection module for detecting the motor load, wherein the voltage detection module and the current detection are combined to obtain a power value, and the load value of the motor is detected based on the power value.

[0028] Preferably,

[0029] The pre-cutting assembly and the extrusion screw resume forward rotation, detect that the motor maintains no load that does not meet the workload, determine that the material has been extruded, and reduce the motor speed to continue forward rotation for a fourth preset time before stopping.

[0030] The beneficial effects of the present invention are:

[0031] 1. The present invention provides an intelligently controlled juicer, which detects changes in the motor load value when the motor rotates forward. When the load value decreases from meeting the working load to not meeting the working load (the load decreases from large to small), the motor is controlled to reverse with the pre-cutting component and the extrusion screw. If the tip is pierced by material, the material is separated from the tip during the reversal process, the state of the material being stuck at the tip is released, and the material is scraped from the tip and can be normally cut by the pre-cutting component in the hopper. After the cutting is completed, the material enters the extrusion screw to complete the extrusion and juicing, thereby effectively ensuring that all the material pierced at the tip is completely squeezed out of the juice. At the same time, by detecting whether the motor meets the working load after resuming forward rotation, it is identified that the motor still does not meet the working load (the load is always small), which means that the material has been squeezed and the juicing is completed; when the motor resumes meeting the working load (the load increases from small to large again), the material pierced by the tip has been separated. And continue to process the material; that is to say, by detecting the motor load after resuming forward rotation, it is possible to distinguish whether the motor is in a no-load state after the normal completion of juicing, or an idling state where the material is pierced into the tip of the cutting edge, so that the juicer can get the correct feedback signal, and the state of the material piercing the tip can be intelligently identified. After the identification, the juicing work is guaranteed to be completed normally, and the whole fruit or large pieces of material are avoided from remaining in the feed barrel, which also greatly improves the user experience; therefore, a method of satisfying a workload that is larger than the no-load and piercing load is adopted, based on the change from a large load to a small load, a large load change is used for the reversal operation, and a state judgment is made based on the load recovery after the reversal, so as to intelligently identify whether the state of the juicer is no-load after the juicing is completed or idling after piercing. This judgment method with a large load change is more significant.

[0032] 2. Based on the fact that the tip is provided with a backing surface protruding radially outward, the inner wall of the hopper is provided with a blocking rib, and the motor drives the pre-cutting assembly to rotate in the opposite direction for a first preset time. In the process of rotating from the backing surface to the outer end of the tip, the radial distance between the blocking rib and the backing surface gradually decreases to separate the material inserted into the tip; in the reverse rotation process, the material will pass through the two cutting edges on the blocking rib in turn, and the surfaces of the blocking rib and the backing surface relative to each other are inclined, so that the material will have two different distances when passing through the two cutting edges, and the backing surface and the two cutting edges will interact with each other, causing the material to loosen twice; therefore, the distance between the backing surface and the blocking rib changes, and the material is separated by the material-prying effect produced by the cooperation of the two cutting edges and the tip, thereby ensuring that the material inserted into the tip can also be effectively squeezed out.

[0033] 3. By detecting that the motor has decreased from satisfying the workload to not satisfying the workload again, the motor is controlled to drive the pre-cutting component and the extrusion screw to rotate in the opposite direction for the first preset time, and then resume forward rotation; when it is detected that the motor has resumed satisfying the workload again and it is determined that the motor has decreased from satisfying the workload to not satisfying the workload again, the tip pierces the material for the second time and the material has been detached during the reversal process of the pre-cutting component, and continues to drive the pre-cutting component and the extrusion screw to rotate forward to process the material; that is, the whole fruit material starts from being put into the hopper, and after the material is pierced and detached from the tip, another whole fruit material is put in and pierced, and the material is detached for the second time after piercing, the juicer obtains the correct feedback signal, so that multiple materials can be effectively identified when they are pierced at the tip at different stages, and the juicer can be identified even if it pierces the material multiple times, which further ensures the normal completion of the juicing work and greatly improves the juicing experience of the entire process.

[0034] 4. Based on entering the extrusion stage of driving the extrusion screw to rotate forward to extrude the material, the extrusion screw continues to rotate forward until the extrusion stage is completed, and the detection motor is reduced from satisfying the workload to not satisfying the workload, and the motor is controlled to drive the pre-cutting component and the extrusion screw to rotate in the opposite direction for a first preset time; that is, multiple whole fruit materials may have entered the stage where some materials have been extruded since they were put into the hopper. At this moment, a certain fruit in the middle is tied, and after the material is tied, the material is separated by reverse transfer, so that in the entire juicing process, the untied whole fruit can be normally squeezed in the first half of the time, ensuring the smoothness of the juicing process in the first half, and at the same time, the remaining middle fruit tying status is effectively identified to ensure that all materials can be squeezed, thereby ensuring the normal completion of the juicing work while ensuring the smoothness of the juicing process.

[0035] 5. Based on driving the pre-cutting component and the extrusion screw to rotate forward, when the motor is detected to decrease from satisfying the workload to not satisfying the workload, the motor is immediately controlled to drive the pre-cutting component and the extrusion screw to rotate in the opposite direction for the first preset time; since the direction of the forward speed is opposite to the direction of the reverse speed, the speed acting on the cutting edge is the speed difference between the forward speed and the reverse speed. The pierced material is subjected to inertial forces in two different directions on the tip, and there is a swing back and forth, which causes the material to loosen on the tip. At the moment of reverse rotation, the cutting edge carries the material, and the material can be easily detached from the tip due to the looseness, thereby achieving the purpose of detaching the material pierced by the tip when the motor changes from forward rotation to reverse rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 The figure is a cross-sectional schematic diagram of an intelligently controlled juicer according to one embodiment of the present invention.

[0038] Figure 2 for Figure 1 Schematic cross-section of the hopper and pre-cutting assembly shown.

[0039] Figure 3 for Figure 2 An enlarged schematic diagram of point A is shown.

[0040] Figure 4 for Figure 2 A cross-sectional schematic diagram from another perspective is shown.

[0041] Figure 5 for Figure 4 An enlarged schematic diagram of point B is shown.

[0042] The names of the components in the figure are as follows:

[0043] 1. Hopper; 11. Blocking rib; 111. First side surface; 112. Second side surface; 113. Inclined surface; 114. First cutting edge; 115. Second cutting edge; 2. Cutting edge; 21. Tip; 211. Back surface; 3. Extrusion screw; 4. Motor. DETAILED DESCRIPTION

[0044] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] In the prior art, a scheme is adopted in which a first cutting edge and a second cutting edge are installed in the feed barrel. The first cutting edge extends along the upper surface of the bottom plate of the feed barrel, and the second cutting edge bends and extends upward. When the material is put in, the second cutting edge cooperates with the first blocking portion of the inner wall of the feed barrel to complete a pre-cutting, and cuts the whole fruit material put into the feed barrel into large pieces of material; the material continues to run downward and the first cutting edge completes a second pre-cutting of the material, cutting the large pieces of material into small pieces of material. The first cutting edge and the second cutting edge arranged in the feed barrel cut the material into small pieces of material before entering the screw, which greatly improves the juice squeezing efficiency of the screw. Although the pre-cutting of materials in the feed barrel greatly improves the efficiency of the screw in squeezing out juice, the second cutting edge has a sharper shape at the upper end of the upward spiral extension. Therefore, when whole fruits or large pieces of materials are put into the large-diameter feed barrel, the upper end of the second cutting edge may penetrate into the middle part of the material or other easily penetrated parts of the material. At this time, the load changes from the normal working load to the idling load (from large to small). The no-load state after the normal completion of juicing also changes from the normal juicing working load to the no-load state (from large to small). Since both are changes from large load to small load, these two states are difficult to be intelligently identified. Therefore, after the material is penetrated, the machine may idle and mistakenly think that the machine has stopped after the juicing is completed, and eventually the whole fruits or large pieces of materials will remain in the feed barrel.

[0046] For a given motor, the juicer aims for constant speed control (especially for brushless motors) to achieve better juicing results. Due to manufacturing and installation variations (variations in motor manufacturing and the installation of drive components like the screw within the entire machine), even within the same batch of machines (same model), each motor's no-load power, while maintaining the same speed, is not unique (i.e., fluctuates within a range). This results in overlaps between machines with no-load power at the upper and lower limits. Specifically, the no-load data intervals detected by some machines of the same model overlap with the load data intervals detected by other machines during idling while feeding. This is a problem discovered by the applicant during large-scale industrial production and unexpected by those skilled in the art. The control program set for multiple machines of the same model is generally consistent, which is why the aforementioned non-unique no-load power detection issue was discovered. Setting up a fixed program for each machine to directly detect both no-load and feeding loads is costly and therefore generally not adopted. However, due to manufacturing variations among machines within the same batch, no-load power fluctuates, making it difficult to set up a universal program to detect all machines. Therefore, the present application does not solve the problem by detecting small load changes (not significant), but adopts a method that satisfies the working load (extrusion load and cutting load) to be larger than the no-load and piercing load. Based on the change from a large load to a small load, a large load change is used to perform a reversal operation, and a state judgment is made based on the load recovery after the reversal, so as to intelligently identify whether the state of the juicer is no-load after the juicing is completed or idling after the piercing. This judgment method of large load changes is more significant.

[0047] The prior art discloses a method of solving the problem of residue blockage in the juice collecting chamber by reversing the rotation. The application number is CN202321354380.X, and the name of the utility model is "A food processing machine with good use effect". It discloses that a material bin is provided above the juice collecting chamber, and a cutting blade is extended into the material bin. The cutting blade includes a first cutting blade inclined upward and extending outward, and a second cutting blade extending horizontally outward. When material blockage occurs in the juice collecting chamber or the rotation is not smooth, the motor is reversed to move the material upward and loosen it. After the motor reversal is completed, it continues to rotate forward to process the food. The applicant has also studied the reversal method. When the juice collecting chamber is clogged with material in the prior art, the load value detected by the motor must be greater than the load value for normal operation, and the reversal occurs under overload. However, after the material penetrates the upper end of the first cutting blade, the idling load of the present application is lower than the load value for normal operation, and the reversal occurs under light load. The state is intelligently identified based on the load recovery after the reversal. The technical means used in the prior art and the present application are different. The prior art is applicable to the scenario of slag blockage and reversal, while the present application is to reverse when the workload changes from being satisfied to not being satisfied (large load to small load). The premise scenarios for reversal and the technical problems to be solved are also completely different. Therefore, those skilled in the art have no motivation to combine the prior art.

[0048] In order to solve the technical problem in the prior art that it is difficult to distinguish between the idle load after the normal completion of juicing and the idle load when the material penetrates the tip of the cutting edge 2, which makes it difficult to complete the juicing work normally. The present invention provides an intelligently controlled juicer, please refer to Figure 1-Figure 5 The intelligently controlled juicer of the present invention includes a hopper 1, an extrusion assembly, a pre-cutting assembly and a motor 4, wherein the extrusion assembly includes a screw and the pre-cutting assembly includes a cutting edge 2.

[0049] The hopper 1 is used to hold whole fruit materials and is provided with a pre-cutting assembly, the pre-cutting assembly including a cutting edge 2 with a tip portion 21 extending upward in a spiral manner, and the pre-cutting assembly rotates forward to cut the material with the tip portion 21; an extrusion assembly is provided below the hopper 1, including an extrusion screw 3 in transmission connection with the pre-cutting assembly;

[0050] a motor 4 for driving the pre-cutting assembly and the extrusion screw 3 to rotate in a forward direction, and when detecting that the motor 4 decreases from satisfying the workload to not satisfying the workload, controlling the motor 4 to drive the pre-cutting assembly and the extrusion screw 3 to rotate in the reverse direction for a first preset time period, and then resuming forward rotation;

[0051] The pre-cutting assembly and the extrusion screw 3 resume forward rotation, and it is detected that the motor 4 does not maintain the working load, and it is determined that the material has been extruded and stops working;

[0052] The pre-cutting assembly and the extrusion screw 3 resume forward rotation, and when it is detected that the motor 4 resumes satisfying the workload and it is determined that the motor 4 has decreased from satisfying the workload to not satisfying the workload, the tip 21 pierces the material and the material has been detached during the reversal process of the pre-cutting assembly, and continues to drive the pre-cutting assembly and the extrusion screw 3 to rotate forward to process the material.

[0053] It should be noted that not meeting the workload, i.e., a load value less than the workload, refers to a lightly loaded or no-load state. Meeting the workload includes both the extrusion load and the cutting load. The extrusion load refers to the load on the motor 4 detected when the material is squeezed out of the extrusion screw 3, while the cutting load refers to the load on the motor 4 detected when the material in the hopper 1 is only being cut. Generally speaking, the cutting load is less than the extrusion load.

[0054] It can be understood that when the motor 4 rotates forward, by detecting the change in the load value of the motor 4, when the load value decreases from meeting the workload to not meeting the workload (the load decreases from large to small), the motor 4 is controlled to reverse with the pre-cutting component and the extrusion screw 3. If the tip 21 is pierced with material, the material is separated from the tip 21 during the reversal process, and the state of the tip 21 piercing the material is released. After the material is scraped from the tip 21, it can be normally cut by the pre-cutting component in the hopper 1. After the cutting is completed, it enters the extrusion screw 3 to complete the extrusion and juicing, thereby effectively ensuring that the material pierced into the tip 21 is fully squeezed. At the same time, by detecting whether the motor 4 meets the workload after resuming forward rotation, it is identified that the motor 4 If the working load is still not satisfied (the load is always small), the material has been squeezed and the juice has been extracted; if the motor 4 resumes to satisfying the working load (the load increases from small to large), the material pierced by the tip 21 has been separated, and the material continues to be processed; that is, by detecting the load of the motor 4 after resuming forward rotation, it can be distinguished whether the motor 4 is reduced from satisfying the working load to not satisfying the working load when rotating forward, whether it is an idle state after the juicing is completed normally, or an idle state where the material is pierced into the tip of the cutting edge 2, so that the juicer can obtain the correct feedback signal, and the state of the material piercing the tip 21 can be intelligently identified. After the identification is completed, the juicing work is guaranteed to be completed normally, and the whole fruit or large pieces of material are avoided from remaining in the feed barrel, which also greatly improves the user experience.

[0055] The present invention utilizes the tip portion 21 to crush the material, and at the same time, when the tip portion is engaged, the tip portion is driven by a motor to reverse to free the engaged material from the tip portion; thus, the tip portion is used to both crush the material during forward rotation and to release the material from the engaged state in combination with reverse rotation, which is difficult for those skilled in the art to conceive. To solve the problem of material being engaged at the tip portion, those skilled in the art generally tend to think of changing the structural form of the cutting edge, but it is difficult to conceive of continuing to utilize the tip portion of the cutting edge in combination with reverse rotation to release the material from the engaged state without changing the cutting edge structure.

[0056] In order to solve the problem of the material pierced by the tip 21 being separated during reversal, the tip 21 can be matched with the inner wall of the hopper 1 to achieve this, or the material pierced by the tip 21 can be separated by switching between the forward and reverse states and utilizing the speed difference.

[0057] In one embodiment, Figure 2-Figure 5 As shown, the tip 21 is cooperated with the inner wall of the hopper 1 to realize the release of the material stuck in the tip 21, the tip 21 is provided with a backing surface 211 protruding radially outward, the inner wall of the hopper 1 is provided with a blocking rib 11, and the motor 4 drives the pre-cutting component to rotate in the opposite direction for the first preset time. During the process of rotating from the backing surface 211 to the outer end of the tip 21, the radial distance between the blocking rib 11 gradually decreases to separate the material stuck in the tip 21.

[0058] It can be understood that the blocking rib 11 is provided near the bottom of the hopper 1, and the blocking rib 11 includes a first side surface 111 and a second side surface 112 arranged vertically, and an inclined surface 113 (the back material surface 211 is arranged oppositely) provided between the first side surface 111 and the second side surface 112. The inclined surface 113 is inclined radially inward from top to bottom, and gradually inclined radially outward along the positive rotation direction. A first cutting edge 114 is provided at the connection between the inclined surface 113 and the first side surface 111, and a second cutting edge 115 is provided at the connection between the inclined surface 113 and the second side surface 112. The first cutting edge 114 protrudes radially inward relative to the second cutting edge 115. During the reverse rotation of the tip portion 21, during the reverse rotation of the cutting edge 2, the radial distance between the blocking rib 11 and the cutting edge 2 gradually decreases during the process from the back material surface 211 to the outer end of the tip portion 21; during the reverse rotation, the material will pass through the first cutting edge 114 in turn. The second cutting edge 115 and the first cutting edge 114, because the distance between the second cutting edge 115 and the backing surface 211 of the tip portion 21 is still relatively large, can loosen the material stuck in the tip portion 21. When it passes through the first cutting edge 114, the distance between the first cutting edge 114 and the backing surface 211 decreases, further loosening the material. When the outer end of the tip portion 21 passes through the first cutting edge 114, the distance between the first cutting edge 114 and the outer end of the tip portion 21 is minimized, and the material is completely separated from the tip portion 21 after the first two loosenings. In other words, by changing the distance between the backing surface 211 and the blocking rib 11 during the reverse rotation, the material is separated by the material-displacing effect generated by the cooperation of the two cutting edges and the tip portion 21, thereby ensuring that the material stuck in the tip portion 21 is effectively squeezed out.

[0059] In another embodiment, the speed difference is used to separate the material pierced on the tip 21, drive the pre-cutting assembly and the extrusion screw 3 to rotate forward, and when the detection motor 4 is reduced from satisfying the workload to not satisfying the workload, the motor 4 is immediately controlled to drive the pre-cutting assembly and the extrusion screw 3 to rotate in the opposite direction for the first preset time period.

[0060] It can be understood that when it is detected that the motor 4 decreases from satisfying the workload to not satisfying the workload (the load changes from large to small), the motor 4 is controlled to immediately switch from forward rotation to reverse rotation. The direction of the forward speed is opposite to the direction of the reverse speed. The speed acting on the cutting edge 2 is the speed difference between the forward speed and the reverse speed. The pierced material is subjected to two inertial forces in different directions on the tip 21, causing the material to loosen on the tip 21. The cutting edge 2 carries the material and at the moment of reverse rotation, the material can be easily detached from the tip 21 due to the looseness of the material, thereby achieving the purpose of switching the motor 4 from forward rotation to reverse rotation to detach the material pierced by the tip 21.

[0061] It should be noted that satisfying the workload includes both extrusion load and cutting load. The detected load values will vary depending on the time it takes for the motor 4 to recover its workload after resuming forward rotation. If the motor 4 load is detected a short time after forward rotation, the material that has separated from the tip 21 has only been cut by the pre-cutting assembly in the hopper 1 and has not yet fallen into the extrusion screw section 3. In this case, the detected load is the cutting load. If the motor 4 load is detected a long time after forward rotation, the material that has separated from the tip 21 may have already fallen into the extrusion screw section 3 after being cut and extruded. In this case, the detected load is the extrusion load.

[0062] In one embodiment, the load of the motor 4 is detected after a long period of time after forward rotation, and after a second preset period of time after the pre-cutting component and the extrusion screw 3 resume forward rotation, it is detected that the motor 4 resumes meeting the extrusion load, and when it is determined that the motor 4 has decreased from meeting the working load to not meeting the working load, the tip 21 pierces the material and the material has been detached during the reversal process of the pre-cutting component, and continues to drive the extrusion screw 3 to rotate forward to extrude the material.

[0063] It is understandable that after resuming forward rotation for the second preset time, it is detected that the motor 4 has resumed meeting the extrusion load. The material pierced by the tip 21 has fallen into the extrusion screw 3 section after being cut in the hopper 1 and has been extruded. The extrusion load is greater than the cutting load. The extrusion load obtained when detecting the load of the motor 4 is the extrusion load. After resuming forward rotation, it is detected that the motor 4 has changed from not meeting the working load to the extrusion load (the load increases from small to large), that is, the material pierced by the tip 21 has been separated and entered the extrusion screw 3 to process the material. It is recognized that the motor 4 has decreased from meeting the working load to not meeting the working load when rotating forward, which is the idling state where the material has penetrated the tip of the cutting edge 2. This allows the juicer to receive the correct feedback signal, ensuring that the juicing work is completed normally, and avoiding the situation where the juicer stops working before the material is squeezed out, greatly improving the user experience.

[0064] In another embodiment, the load of the motor 4 is detected after a short period of time after forward rotation, and the pre-cutting component and the extrusion screw 3 resume forward rotation for a third preset period of time. When it is detected that the motor 4 resumes meeting the cutting load and it is determined that the motor 4 has decreased from meeting the workload to not meeting the workload, the tip 21 pierces the material and the material has been detached during the reversal process of the pre-cutting component, and continues to drive the extrusion screw 3 to rotate forward to extrude the material.

[0065] It is understandable that the second preset time is greater than the third preset time. After resuming forward rotation for the third preset time, it is detected that the motor 4 has resumed meeting the cutting load. The material that has separated from the tip 21 is only cut by the pre-cutting component in the hopper 1 and has not yet fallen into the extrusion screw 3. When detecting the load of the motor 4, only the cutting load can be detected. After resuming forward rotation, it is detected that the motor 4 has changed from not meeting the working load to the cutting load (the load has increased from small to large), that is, the material pierced by the tip 21 has been separated. It is recognized that the motor 4 has decreased from meeting the working load to not meeting the working load when rotating forward, and it is an idling state where the material has penetrated the tip of the cutting edge 2. This allows the juicer to receive correct feedback signals, ensuring that the juicing work is completed normally, and avoiding the situation where the juicer stops working before the material is squeezed out, which greatly improves the user experience.

[0066] It should be noted that during the operation of the juicer, there may be the following working conditions: after resuming forward rotation, the material is added again and the material gets stuck again; or, after resuming forward rotation, the juicing work is completed normally, and the load changes from large to small again; or, when multiple whole fruits are added at the same time, some materials have entered the extrusion screw 3 and are squeezed, a whole fruit in the middle gets stuck. Since there is still material to be squeezed or cut, the detected load of the motor 4 always meets the working load value, and the problem of material getting stuck can only be identified after the other whole fruits are squeezed; or, if the whole fruit gets stuck in the tip 21 as soon as it is added, the material getting stuck state can be identified immediately.

[0067] In one embodiment, after the forward rotation is restored, the juice extraction operation is completed normally and the load changes from large to small again.

[0068] Step 1: Whole fruit material is put into the hopper 1, and the pre-cutting assembly and the extrusion screw 3 are driven to rotate forward. When the motor 4 is detected to reduce from satisfying the workload to not satisfying the workload, the motor 4 is controlled to drive the pre-cutting assembly and the extrusion screw 3 to rotate in the reverse direction for a first preset time, and then resume forward rotation;

[0069] Step 2: The pre-cutting assembly and the extrusion screw 3 resume forward rotation, and when it is detected that the motor 4 resumes satisfying the workload and it is determined that the motor 4 has decreased from satisfying the workload to not satisfying the workload, the tip 21 pierces the material and the material has been separated during the reversal process of the pre-cutting assembly, and the pre-cutting assembly and the extrusion screw 3 continue to be driven to rotate forward to process the material;

[0070] Step 3: Detecting that the motor 4 is reduced from satisfying the workload to not satisfying the workload again, controlling the motor 4 to drive the pre-cutting assembly and the extrusion screw 3 to rotate in the reverse direction for a first preset time, and then resuming forward rotation;

[0071] Step 4: Detecting that the motor 4 does not maintain sufficient workload, determining that the material has been processed and stopping the work.

[0072] It is understandable that during the forward rotation of the whole fruit material, the tip 21 pierces the material, detecting that the load of the motor 4 has decreased from satisfying the workload to not satisfying the workload (changing from large to small). After reversing for a first preset time, it resumes forward rotation, detecting that the load of the motor 4 has again recovered from not satisfying the workload to satisfying the workload (changing from small to large). After resuming forward rotation to process the material for a period of time, the material has been squeezed and juiced, detecting that the load of the motor 4 has decreased from satisfying the workload to not satisfying the workload (changing from large to small), and stopping. In other words, the whole fruit material starts from being put into the hopper, undergoes the process of piercing the material, and completes the normal juicing process after the material is separated from the tip 21. Because the juicer receives the correct feedback signal, the state of the material piercing the tip 21 is effectively identified, effectively ensuring the normal completion of the juicing process, avoiding the situation where the juicer stops working before the material is completely squeezed, and greatly improving the user experience.

[0073] In another embodiment, after the forward rotation is restored, the material jamming occurs again.

[0074] Step 1: Whole fruit material is put into the hopper 1, and the pre-cutting assembly and the extrusion screw 3 are driven to rotate forward. When the motor 4 is detected to reduce from satisfying the workload to not satisfying the workload, the motor 4 is controlled to drive the pre-cutting assembly and the extrusion screw 3 to rotate in the reverse direction for a first preset time, and then resume forward rotation;

[0075] Step 2: The pre-cutting assembly and the extrusion screw 3 resume forward rotation, and when it is detected that the motor 4 resumes satisfying the workload and it is determined that the motor 4 has decreased from satisfying the workload to not satisfying the workload, the tip 21 pierces the material and the material has been separated during the reversal process of the pre-cutting assembly, and the pre-cutting assembly and the extrusion screw 3 continue to be driven to rotate forward to process the material;

[0076] Step 3: After resuming forward rotation, another whole fruit material is added, and the motor 4 is detected to be reduced from satisfying the workload to not satisfying the workload again, and the motor 4 is controlled to drive the pre-cutting assembly and the extrusion screw 3 to rotate in the opposite direction for a first preset time, and then resume forward rotation;

[0077] Step 4: When it is detected that the motor 4 resumes meeting the workload and it is determined that the motor 4 has decreased from meeting the workload to not meeting the workload again, the tip 21 pierces the material for the second time and the material has been separated during the reversal process of the pre-cutting component, and continues to drive the pre-cutting component and the extrusion screw 3 to rotate forward to process the material.

[0078] It can be understood that during the forward rotation juicing process of the whole fruit material, the tip 21 pierces the material, and it is detected that the load of the motor 4 is reduced from meeting the workload to not meeting the workload (changing from large to small). After the first preset time period, the reverse rotation is restored and the forward rotation is resumed. It is detected that the load of the motor 4 is restored from not meeting the workload to meeting the workload (changing from small to large). After the forward rotation is restored to process the material for a period of time, the whole fruit material is put into the hopper 1 again, and the whole fruit is also pierced. It is detected that the load of the motor 4 is reduced from meeting the workload to not meeting the workload (changing from large to small). After the second reversal, the forward rotation is resumed for the second time. It is detected that the load of the motor 4 is restored from not meeting the workload to meeting the workload (changing from small to large) again. That is to say, the whole fruit material starts from being put into the hopper, and after being stuck until the material is separated from the tip part 21, another whole fruit material is put in and stuck, and the material is separated for the second time after being stuck. The juicer obtains the correct feedback signal, so that multiple materials can be effectively identified when they are stuck at the tip part 21 at different stages. The juicer can identify the material even if it is stuck multiple times, which further ensures the normal completion of the juicing work and greatly improves the juicing experience of the whole process.

[0079] In another embodiment, a plurality of whole fruits are fed in at the same time, and when part of the material has entered the extrusion screw 3 and been extruded, a whole fruit in the middle is stuck.

[0080] Step 1: When entering the extrusion stage of driving the extrusion screw 3 to rotate forward to extrude the material, the extrusion screw 3 continues to rotate forward until the extrusion stage is completed, and the motor 4 is detected to be reduced from satisfying the workload to not satisfying the workload, and the motor 4 is controlled to drive the pre-cutting assembly and the extrusion screw 3 to rotate in the opposite direction for a first preset time, and then resume forward rotation;

[0081] Step 2: The pre-cutting assembly and the extrusion screw 3 resume forward rotation, and when it is detected that the motor 4 resumes satisfying the workload and it is determined that the motor 4 has decreased from satisfying the workload to not satisfying the workload, the tip 21 pierces the material and the material has been detached during the reversal process of the pre-cutting assembly, and continues to drive the pre-cutting assembly and the extrusion screw 3 to rotate forward to process the material.

[0082] It is understandable that when multiple whole fruits are put in, the material of the first whole fruit is stuck (some whole fruit in the middle is stuck), and the other whole fruits are not stuck, and part of the material has entered the extrusion screw 3 to be squeezed. Since there is still material to be squeezed or cut, the detected load of the motor 4 always meets the workload value. It is necessary to wait until the other whole fruits are squeezed before it is identified that some fruit in the middle has a problem of sticking. It is detected that the load of the motor 4 is reduced from meeting the workload to not meeting the workload (changing from large to small), and after reversing for a first preset time, it resumes forward rotation, and it is detected that the load of the motor 4 is restored from not meeting the workload to meeting the workload (changing from small to large). That is to say, multiple whole fruit materials may enter the stage of partial material extrusion from the time they are put into the hopper. At this moment, a certain fruit in the middle is squeezed, and after squeezing, the material is separated by reverse transfer, so that in the entire juicing process, the un-buried whole fruit can be juiced normally in the first half of the time, ensuring the smoothness of the juicing process in the first half, and at the same time, the status of the remaining middle fruit squeezing material can be effectively identified to ensure that all materials can be squeezed, thereby ensuring the normal completion of the juicing work while ensuring the smoothness of the juicing process.

[0083] In addition, the intelligently controlled juicer further includes a voltage detection module and a current detection module for detecting the load of the motor 4. The power value is obtained by combining the voltage detection module and the current detection, and the load value of the motor 4 is detected based on the power value.

[0084] It is understandable that obtaining the load value of the motor 4 through a single current detection module or voltage detection module will greatly reduce the accuracy of the load value of the motor 4 due to the unstable voltage or current in the power grid; while first obtaining the power value through the signal measured by the current detection module and the voltage detection module, the power is always constant, which greatly improves the accuracy of the load value of the motor 4, thereby ensuring the accuracy of the juicing signal, and is more conducive to distinguishing whether the juicer is in a no-load state after the normal completion of juicing, or in an idling state where the material has penetrated the tip of the cutting edge 2.

[0085] In some embodiments, the pre-cutting assembly and the extrusion screw 3 resume forward rotation, detect that the motor 4 maintains no load that does not meet the workload, determine that the material has been extruded, and reduce the speed of the motor 4 to continue forward rotation for the fourth preset time before stopping.

[0086] It is understandable that when it is identified that the juicer does not meet the workload because it is in a state where the material has been squeezed, the juicer speed is adjusted to reduce energy consumption, and the juicer stops working after a fourth preset time (for example, 20 minutes, etc.).

[0087] In addition to the preferred embodiments described above, the technical solutions protected by the present invention 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 the technical solution of any one embodiment with the technical solutions in one or more other embodiments, are within the scope of protection of the present invention. Although the present invention has been described in detail above using general descriptions and specific embodiments, it is obvious to those skilled in the art that modifications or improvements can be made based on the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention are within the scope of protection claimed by the present invention.

Claims

1. An intelligently controlled juicer, characterized in that: include: A hopper for holding whole fruit materials and provided with a pre-cutting assembly, wherein the pre-cutting assembly includes a cutting edge with a tip portion extending spirally upward, and the pre-cutting assembly rotates forward to cut the material with the tip portion; An extrusion assembly is disposed below the hopper and includes an extrusion screw drivingly connected to the pre-cutting assembly; a motor driving the pre-cutting assembly and the extrusion screw to rotate forward, and controlling the motor to drive the pre-cutting assembly and the extrusion screw to rotate in the reverse direction for a first preset time period and then resume forward rotation when detecting that the motor decreases from satisfying the workload to not satisfying the workload; The pre-cutting assembly and the extrusion screw resume forward rotation, and it is detected that the motor does not maintain sufficient workload, and it is determined that the material has been extruded and the operation is stopped; The pre-cutting assembly and the extrusion screw resume forward rotation, and when it is detected that the motor resumes to meet the workload and it is determined that the motor has decreased from meeting the workload to not meeting the workload, the tip pierces the material and the material has been detached during the reversal process of the pre-cutting assembly, and continues to drive the pre-cutting assembly and the extrusion screw to rotate forward to process the material.

2. The intelligently controlled juicer according to claim 1, characterized in that: The tip portion is provided with a material backing surface convex outwardly in the radial direction, and the inner wall of the hopper is provided with a blocking rib. The motor drives the pre-cutting assembly to rotate in the opposite direction for the first preset time. During the process of rotating from the back material surface to the outer end of the tip portion, the radial distance between the pre-cutting assembly and the blocking rib gradually decreases to separate the material that has penetrated into the tip portion.

3. The intelligently controlled juicer according to claim 1, characterized in that: After the pre-cutting assembly and the extrusion screw resume forward rotation for a second preset time, it is detected that the motor resumes to meet the extrusion load, When it is determined that the motor is reduced from satisfying the workload to not satisfying the workload, the tip pierces the material and the material has been separated during the reversal process of the pre-cutting component, and continues to drive the extrusion screw to rotate forward to extrude the material.

4. The intelligently controlled juicer according to claim 1, characterized in that: The pre-cutting assembly and the extrusion screw resume forward rotation for a third preset time, and it is detected that the motor resumes to meet the cutting load. When it is determined that the motor is reduced from satisfying the workload to not satisfying the workload, the tip pierces the material and the material has been separated during the reversal process of the pre-cutting component, and continues to drive the extrusion screw to rotate forward to extrude the material.

5. The intelligently controlled juicer according to claim 1, characterized in that: The pre-cutting assembly and the extrusion screw are driven to rotate forwardly. When it is detected that the motor decreases from satisfying the workload to not satisfying the workload, the motor is immediately controlled to drive the pre-cutting assembly and the extrusion screw to rotate in the opposite direction for the first preset time period.

6. The intelligently controlled juicer according to claim 1, characterized in that: After continuing to drive the pre-cutting assembly and the extrusion screw to rotate forward to process the material, the intelligently controlled juicer further includes: detecting that the motor is reduced from satisfying the workload to not satisfying the workload again, controlling the motor to drive the pre-cutting assembly and the extrusion screw to rotate in the reverse direction for a first preset time period, and then resuming forward rotation; It is detected that the motor does not maintain the working load, and it is determined that the material has been processed and the motor stops working.

7. The intelligently controlled juicer according to claim 1, characterized in that: After continuing to drive the pre-cutting assembly and the extrusion screw to rotate forward to process the material, the intelligently controlled juicer further includes: detecting that the motor is reduced from satisfying the workload to not satisfying the workload again, controlling the motor to drive the pre-cutting assembly and the extrusion screw to rotate in the reverse direction for a first preset time period, and then resuming forward rotation; When it is detected that the motor has resumed meeting the workload and it is determined that the motor has decreased from meeting the workload to not meeting the workload again, the tip pierces the material again and the material has been detached during the reversal process of the pre-cutting component, and continues to drive the pre-cutting component and the extrusion screw to rotate forward to process the material.

8. The intelligently controlled juicer according to claim 1, characterized in that: When entering the extrusion stage of driving the extrusion screw to rotate forward to extrude the material, the extrusion screw continues to rotate forward until the extrusion stage is completed, the detection motor is reduced from satisfying the workload to not satisfying the workload, and the motor is controlled to drive the pre-cutting assembly and the extrusion screw to rotate in the opposite direction for a first preset time.

9. The intelligently controlled juicer according to claim 1, characterized in that: The intelligently controlled juicer further comprises a voltage detection module and a current detection module for detecting the motor load. The power value is obtained by combining the voltage detection module and the current detection, and the load value of the motor is detected based on the power value.

10. The intelligently controlled juicer according to claim 1, characterized in that: The pre-cutting assembly and the extrusion screw resume forward rotation, detect that the motor maintains no load that does not meet the workload, determine that the material has been extruded, and reduce the motor speed to continue forward rotation for a fourth preset time before stopping.

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