Food processor capable of detecting liquid level across air

Abstract

The utility model relates to kitchen appliances, in particular to a food processor capable of detecting liquid level across the air, which comprises a glass cup body, a stirring knife arranged in the glass cup body and a handle arranged on one side of the glass cup body, and a detection plate used for detecting the liquid level across the air is arranged between the glass cup body and the handle in a hidden mode. The inner side wall of the glass cup body is provided with a plurality of turbulent flow ribs which are arranged in a radially inward protruding mode, the multiple turbulent flow ribs and the detection plate are arranged in a staggered mode in the circumferential direction of the glass cup body, the turbulent flow ribs comprise the first turbulent flow rib closest to the detection plate in the rotating direction of the stirring cutter, and the first turbulent flow rib is located on the upstream of the detection plate. The circumferential distance between the edge of the side, opposite to the first turbulent flow rib, of the detection plate and the inner side wall of the glass cup body is L1, and L1 is not smaller than the width of the detection plate. According to the food processor disclosed by the utility model, a better structure between the turbulent flow rib and the detection plate is designed, so that the situation that the detection plate carries out empty detection or error detection on the liquid level is avoided, and the accuracy of the detection plate on the liquid level detection is also improved.

Description

Technical Field

[0001] The utility model relates to kitchen appliances, in particular to a food processor capable of detecting liquid levels in the air. Background Art

[0002] The basic logic of using a PCB detection board to detect the liquid level in the processing cup of a food processor is an existing solution. For example, the prior art CN201610753199.4 discloses a food processor with a host placed below, in which a signal PCB detection board is arranged between the cup body and the hand-held handle, and a metal sheet is arranged on the signal PCB board. When the volume of the food in the cup body changes, the capacitor formed by the metal sheet and the food in the cup body will generate a charge signal, and the signal PCB detection board will then transmit the charge signal to the control circuit board. The control circuit board can determine the height of the current liquid level of the food in the cup body according to the transmitted signal. At the same time, the control circuit board controls the electric heating element or the knife group according to the current liquid level, thereby effectively controlling the change of the liquid level of the food and preventing food from overflowing.

[0003] We know that, in general, spoiler ribs are provided on the side walls of the cup body of a food processor to enhance the spoiler of the food, so as to achieve high food crushing efficiency and good uniformity. However, the applicant discovered in the course of research that for a food processor with both spoiler ribs and a detection plate, during the pulping process of the food processor, there is a situation where the PCB detection board does not detect the charge signal or the charge signal is weak and the anti-overflow action is not fed back in time, but the actual slurry has overflowed. Alternatively, the slurry does not actually reach the anti-overflow point, but the detection board mistakenly detects the charge signal and takes an anti-overflow action in advance, resulting in a prolonged pulping cycle.

[0004] The most common existing glass cup body is tubular glass, and its cup wall thickness is about 3.5mm; the cup wall thickness of die-cast glass cup body is about 4.5mm-10mm. The applicant has detected the strength of the charge signal of the above-mentioned different cup bodies and found that the PCB detection board signal of the die-cast glass cup body is weaker than the charge signal strength of the tubular glass cup, and the detection accuracy is relatively weakened.

[0005] In summary, the prior art has not further considered how to set the structural relationship between the spoiler ribs and the signal PCB detection board to improve the accuracy of liquid level detection and avoid the problem of overflow caused by failure to detect the anti-overflow signal. Utility Model Content

[0006] The purpose of the utility model is to provide a food processing machine for detecting liquid level remotely, by improving the structural arrangement of the spoiler ribs and the detection plate, so as to enhance the accuracy of the detection plate in detecting the liquid level in the cup of the food processing machine, buffer the liquid flow, and reduce the risk of overflow caused by false detection.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a food processing machine for detecting liquid level in the air, comprising a glass body, a stirring knife arranged in the glass cup and a handle installed on one side of the glass body, a detection plate for detecting liquid level in the air is hidden between the glass body and the handle, a plurality of spoiler ribs protruding radially inward are provided on the inner wall of the glass body, the plurality of spoiler ribs and the detection plate are staggered along the circumference of the glass body, and along the rotation direction of the stirring knife, the spoiler ribs include a first spoiler rib that is most adjacent to the detection plate, the first spoiler rib is located upstream of the detection plate, and the circumferential distance between the edge of the detection plate on the opposite side of the detection plate to the first spoiler rib along the inner wall of the glass body is L1, wherein L1 is not less than the width of the detection plate.

[0008] Furthermore, the radial thickness of the first spoiler rib is H1, and the circumferential width of the first spoiler rib along the inner wall of the glass cup body is L1', wherein L1, H1 and L1' satisfy: L1≥1.25L1', 0.3≤H1 / L1'≤1.5.

[0009] Furthermore, the circumference of the inner wall of the glass body is C, wherein C and L1 satisfy: L1≤1 / 4C.

[0010] Furthermore, the spoiler rib also includes a second spoiler rib arranged adjacent to the other side of the detection plate, and the circumferential distance between the edge of the detection plate on the opposite side of the second spoiler rib along the inner wall of the glass cup body is L2, wherein L2 is not less than the width of the detection plate.

[0011] Furthermore, the second spoiler rib and the first spoiler rib are arranged symmetrically relative to the detection plate.

[0012] Further, the thickness of the first spoiler rib in the radial inward direction is H1, the detection plate includes an electrode sheet, the width of the electrode sheet is L3, wherein H1 and L3 satisfy: 0.1

[0013] The width of the detection plate ranges from 10 mm to 30 mm.

[0014] Furthermore, the detection plate is in a strip shape, and includes a plurality of electrode sheets distributed vertically, and the top end of the first spoiler rib is arranged not lower than the bottom end of the highest electrode sheet.

[0015] Furthermore, the detection plate is in a strip shape, and includes a plurality of electrode sheets distributed vertically and a control chip. The control chip is arranged below the lowest electrode sheet, and the first spoiler rib is arranged not lower than the bottom end of the lowest electrode sheet.

[0016] ​Furthermore, a plurality of the spoiler ribs are evenly distributed along the inner wall of the glass body; or,

[0017] The detection plate is connected to the central axis of the glass body along a vertical axis of symmetry to form a reference surface, and the plurality of spoiler ribs are arranged in an axisymmetric manner relative to the reference surface.

[0018] Furthermore, a central angle formed by the detection plate and the first spoiler rib relative to the center of the glass body ranges from 30° to 90°.

[0019] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0020] 1. The food processing machine used in this application realizes real-time detection of the liquid level height of the material in the glass cup body by hiding a detection plate for detecting the liquid level in the air between the glass cup body and the handle, and also avoids the exposure of the detection plate affecting the aesthetics of the whole machine. By setting up multiple spoiler ribs, the stirring and spoiling of the material are achieved, and the material crushing efficiency and crushing uniformity are improved. On this basis, by setting up multiple spoiler ribs and the detection plate in a circumferentially staggered arrangement along the glass cup body, it is avoided that any of the spoiler ribs are located in the position directly opposite the detection plate and the thickness of the glass cup body here is locally increased, and the induction path between the liquid level of the material and the metal sheet of the detection plate is extended, which is conducive to improving the strength and stability of the charge model detected by the detection plate.

[0021] Based on the fact that the existence of spoiler ribs in the prior art may lead to the situation that the charge signal cannot be detected or the charge signal detection is weak. Further in-depth research has been conducted and it is found that the reason is that the liquid flow and the foam layer, under the action of the spoiler ribs, are subjected to the reaction force of the spoiler ribs after hitting the spoiler ribs, and flow back to the spoiler ribs, that is, after crossing the most convex point of the spoiler ribs, a parabola-like motion path is generated. If the spoiler ribs are close to the detection plate, the parabola will cross the detection plate and contact the side wall of the glass cup body, that is, there is a section of the liquid flow and the foam layer that does not contact the cup wall or contacts very little. When there is a section of the liquid flow and the foam layer at the liquid surface that does not contact the cup wall, the metal sheet on the detection plate cannot form a circuit break with the liquid flow and the foam layer at the liquid surface, and no charge signal can be generated. When a very small amount of the liquid flow and the foam layer at the liquid surface fall back into the electrode sheet of the detection plate, the charge signal is weak and may not be fed back to the main control chip to take action. In particular, the foam layer is relatively light and can be easily thrown away by the reaction force of the spoiler ribs, making it impossible to detect the charge signal in time and take timely action, which greatly increases the risk of slurry overflow.

[0022] Therefore, in the present application, spoiler ribs are also provided along the rotation direction of the stirring blade, including a first spoiler rib that is provided closest to the detection plate, the first spoiler rib is located upstream of the detection plate, and the circumferential distance between the edge of the detection plate on the opposite side of the first spoiler rib along the inner wall of the glass cup body is L1, wherein L1 is not less than the width of the detection plate. When L1 is greater than the width of the detection plate, there is enough space between the first spoiler rib and the detection plate, either the liquid flow and the foam layer will fall back into the electrode sheet of the detection plate after crossing the first spoiler rib; or the liquid flow and the foam layer will fall back behind the detection plate after crossing the first spoiler rib, and then adhere to the inner wall of the glass cup body and flow into the electrode sheet of the detection plate. Regardless of the above situation, the setting of L1 in this scheme can ensure that the detection plate detects a strong and stable charge signal, and can timely feedback the current liquid level status to the main control chip to prevent the slurry from overflowing, and avoid the situation where the detection plate is empty or misdetected and causes the slurry to overflow.

[0023] In addition, the liquid flow always rotates in the same direction as the rotation direction of the stirring blade. Therefore, when the material liquid flow moves closer and closer to the detection plate, the flow rate will increase due to the flow inertia. At this time, by placing the detection plate in front of the first spoiler rib, it can play a certain role in blocking and slowing down the liquid flow. The liquid flow after flowing through the first spoiler rib continues to move along the inner wall of the glass cup body to the detection plate. The liquid flow will be more stable, and the charge signal detected by the detection plate will be more accurate.

[0024] 2. The applicant also found in the course of research that: the thicker the radial thickness H1 of the first spoiler rib, the farther the parabola can be thrown after passing the first spoiler rib when the liquid flow speed is the same, so it is necessary to greatly increase the circumferential spacing L1 between the rear of the detection plate and the front of the first spoiler rib along the inner wall of the glass cup body, resulting in a decrease in the total number of spoiler ribs that can be set on the inner wall of the glass cup body, weakening the spoiler and crushing uniformity effect on the material. In addition, the circumferential width L1' of the first spoiler rib along the inner wall of the glass cup body will also affect the final landing point of the liquid flow, that is, the larger the L1' value, the greater the probability that the liquid flow will still fall back at the first spoiler rib after passing the first spoiler rib, which is conducive to reducing the risk of empty detection or false detection of the detection plate. However, if the L1 value is too large, it is easy to increase the cost and the wall thickness of the glass cup body, and the user's visibility of the material will decrease.

[0025] In order to solve the above problems at the same time, in this solution, L1≥1.25L1' is set, so that the point where the liquid flow and the foam layer fall back to the inner wall of the glass cup body after passing the first spoiler rib is between the rear of the detection plate and the front of the first spoiler rib. At the same time, the range of H1 / L1' is set between 0.3 and 1.5. On the one hand, it is avoided that when the H1 / L1' value is greater than 1.5, the radial thickness H1 value of the first spoiler rib is too large, the generated liquid flow parabola is too large, and the spacing L1 needs to be increased, which affects the setting of the number of the first spoiler ribs and affects the spoiling and crushing uniformity of the material; on the other hand, it is also avoided that when the H1 / L1' value is less than 0.3, the H1 value is too small, the spoiling effect on the material is not obvious, or the L1' value is too large, which also affects the setting of the number of the first spoiler ribs, and also increases the cost and the wall thickness of the glass cup body, and reduces the visibility of the user to observe the material.

[0026] 3. Preferably, along the rotation direction of the stirring blade, if no spoiler ribs are provided behind the detection plate, or the spoiler ribs provided here are far from the detection plate, the liquid flow and the foam layer will gradually accelerate after crossing the spoiler ribs. If the speed when moving to the detection plate is too high, some foam in the foam layer may be thrown toward the detection plate, but the actual foam layer has not reached the overflow height, and the detection plate will mistakenly detect that it has reached an overflow state, and stop heating or stop / slow down stirring, thereby extending the production cycle. For this reason, the present solution also sets the circumference of the inner wall of the glass cup body to C and the L1 value to satisfy the relationship of L1≤1 / 4C, so that the liquid flow and the foam layer, especially the foam layer, after crossing the first spoiler rib, will not have a path too long along the inner wall of the glass cup body to the detection plate, thereby reducing the risk of the foam being thrown away.

[0027] 4. In order to enhance the spoiler effect of the spoiler ribs on the material and improve the uniformity of crushing, the spoiler ribs also include a second spoiler rib adjacent to the other side of the detection plate to avoid extending the path of the charge signal between the liquid level and the detection plate, which affects the strength of the charge signal. However, this may cause the liquid flow and foam layer to pass through the first spoiler rib and smoothly enter the electrode sheet of the detection plate. When flowing through the second spoiler rib, it will be subject to the reaction force of the second spoiler rib toward the detection plate, causing a small amount of liquid flow and foam layer to fall back into the electrode sheet of the detection plate. At the same time, due to the continuous influx of liquid flow and foam layer behind the detection plate, the liquid flow and foam layer that fall back will accumulate above the liquid flow and foam layer behind the detection plate, causing the detection plate to mistakenly detect that the slurry is overflowing. Therefore, in this solution, the circumferential distance between the edge of the detection plate and the side opposite to the second spoiler rib along the inner wall of the glass cup body is set to L2, wherein L2 is not less than the width of the detection plate, so as to prevent the liquid flow and the foam layer from rebounding and falling back onto the detection plate under the action of the second spoiler rib, resulting in false detection. Furthermore, in order to improve the flow stability of the liquid flow and the foam layer, the second spoiler rib is arranged symmetrically with the first spoiler rib relative to the detection plate. Alternatively, a plurality of spoiler ribs may be evenly distributed along the inner wall of the glass cup body, which can not only improve the spoiler effect, but also improve the flow stability of the liquid flow and the foam layer along the inner wall of the glass cup body.

[0028] 5. The most common problem in the operation of the food processor is the overflow of slurry. The high-temperature slurry can easily scald the user, and the overflowing slurry sticks to the outer wall of the glass cup body and the cup cover, which also increases the difficulty of cleaning. In this solution, by setting a detection plate including multiple vertically distributed electrode sheets, the liquid level can be monitored in real time for different material volumes in the glass cup body. In addition, the top electrode sheet is mainly used for overflow prevention detection. By setting the top of the spoiler rib to be no lower than the bottom of the top electrode sheet, the spoiler rib can buffer the flow rate of the liquid flow and foam passing through the top electrode sheet. After buffering, the liquid flow and foam, especially the foam, that pass through the spoiler rib can be stably attached to the inner wall of the glass cup body, making the charge signal detected at the top strong and stable, effectively improving the stability of overflow prevention detection.

[0029] 6. We know that in the prior art, the stirring blade is often located in the area near the bottom of the glass, and the stirring blade will fully stir the nearby materials. In this case, the materials at the bottom can be crushed well without the function of the spoiler ribs, and the area where the control chip is set does not need to consider the strength of the charge signal. Therefore, within the height range of the control chip below the lowest electrode sheet, the spoiler ribs can be omitted to save costs.

[0030] 7. Preferably, in the present solution, the central angle formed by the detection plate and the first spoiler rib relative to the center of the glass cup body is set to range from 30° to 90°, so that more spoiler ribs can be provided along the inner wall of the glass cup body to enhance the spoiler effect, while avoiding the spoiler ribs being too dense, which would reduce the visibility of the material for the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The utility model is further described below in conjunction with the accompanying drawings:

[0032] Figure 1 It is a cross-sectional view of a food processing machine according to one embodiment of the utility model;

[0033] Figure 2 This is a three-dimensional structural cross-sectional view of a food processing machine in one embodiment of the utility model;

[0034] Figure 3 This is a top view showing the detection plate and the first spoiler rib in one embodiment of the utility model;

[0035] Figure 4 for Figure 3 A partial enlarged view of area A shown in FIG.

[0036] Reference numerals:

[0037] 1. Glass cup body; 11. Stirring blade; 12. First spoiler rib; 13. Second spoiler rib; 2. Handle; 3. Detection board; 31. Electrode sheet; 32. Control chip; 4. Machine base; 41. Motor. DETAILED DESCRIPTION

[0038] like Figures 1 to 4 The figure shows a schematic diagram of the structure of a food processing machine for detecting liquid level in the air of the utility model. The food processing machine can be used to make soy milk drinks, including a glass cup body 1 forming a pulping container and a cup cover (not shown) mounted on the glass cup body 1. The bottom of the glass cup body 1 is provided with a heating device for heating the pulping container and a machine base 4 for fixing the heating device and the glass cup body 1 together, and a motor 41 is provided in the installation cavity below the glass cup body 1. The rotating shaft driven by the motor 41 passes through the machine base 4 and the heating device and extends into the pulping container, and the end of the rotating shaft is connected to a stirring knife 11. At the same time, a handle 2 is installed on one side of the glass cup body 1, and a detection plate 3 component for detecting liquid level in the air is hidden between the glass cup body 1 and the handle 2. A hook is provided on the top of the detection plate 3 component. The detection plate 3 component is hooked on the edge of the glass cup body 1 by the hook for positioning, and the handle 2 presses the detection plate 3 component against the outer wall of the glass cup body 1.

[0039] By hiding a detection plate 3 for detecting the liquid level in the air between the glass body 1 and the handle 2, the liquid level height of the material in the glass body 1 can be detected in real time, and the detection plate 3 is prevented from being exposed and affecting the aesthetics of the whole machine.

[0040] Specifically, the inner wall of the glass body 1 is provided with a plurality of spoiler ribs protruding radially inward, and the plurality of spoiler ribs and the detection plate 3 are staggered along the circumference of the glass body 1. By providing a plurality of spoiler ribs, stirring and spoiling of the material are achieved, thereby improving the material crushing efficiency and uniformity. By staggering the plurality of spoiler ribs and the detection plate 3 along the circumference of the glass body 1, it is avoided that any of the spoiler ribs are located at a position directly opposite to the detection plate 3, thereby partially increasing the thickness of the glass body 1 there, and extending the induction path between the liquid level of the material and the metal sheet of the detection plate 3, which is beneficial to improving the strength and stability of the charge model detected by the detection plate 3.

[0041] It should be noted that, in the present application, the multiple spoiler ribs and the detection plate 3 are staggered along the circumference of the glass cup body 1, which means that along the radial direction of the glass cup body 1, there is no overlap between any spoiler rib and the detection plate 3. At least, it is the area where the spoiler rib does not overlap with the electrode sheet 31 of the detection plate 3. In addition, the liquid level described in the present utility model refers to the liquid surface position of the pure liquid when there is only liquid without foam; when there is foam, it refers to the surface position of the foam or the liquid surface position of the pure liquid, depending on the situation. Of course, in most cases, it still refers to the surface position of the foam.

[0042] Based on the fact that the existence of spoiler ribs in the prior art may lead to the situation that the charge signal cannot be detected or the charge signal detection is weak. Further in-depth research has been conducted and it is found that the reason is that the liquid flow and the foam layer, under the action of the spoiler ribs, are subjected to the reaction force of the spoiler ribs after hitting the spoiler ribs, and flow back to the spoiler ribs, that is, after crossing the most convex point of the spoiler ribs, a parabola-like motion path is generated. If the spoiler ribs are close to the detection plate 3, the parabola will cross the detection plate 3 and contact the side wall of the glass cup body 1, that is, there is a section of the liquid flow and the foam layer that does not contact the cup wall or contacts very little. When there is a section of the liquid flow and the foam layer at the liquid surface that does not contact the cup wall, the metal sheet on the detection plate 3 cannot form a circuit break with the liquid flow and the foam layer at the liquid surface, and no charge signal can be generated. When a very small amount of the liquid flow and the foam layer at the liquid surface fall back into the electrode sheet 31 of the detection plate 3, the charge signal is weak and may not be fed back to the main control chip to take action. In particular, the foam layer is relatively light and can be easily thrown away by the reaction force of the spoiler ribs, making it impossible to detect the charge signal in time and take timely action, which greatly increases the risk of slurry overflow.

[0043] More specifically, see Figure 3, the arrowed indicator line on the right side of the stirring blade 11 indicates the rotation direction of the stirring blade 11. To solve the above problem, in this embodiment, the spoiler ribs are also arranged along the rotation direction of the stirring blade 11, including a first spoiler rib 12 which is arranged closest to the detection plate 3, the first spoiler rib 12 is located upstream of the detection plate 3, and the circumferential distance between the edge of the detection plate 3 on the side opposite to the first spoiler rib 12 along the inner wall of the glass body 1 is L1, wherein L1 is not less than the width of the detection plate 3, and the width of the detection plate is set with reference to Figure 1 As shown, marked as L0.

[0044] It should be noted that since the detection plate is located on the outside of the side wall of the glass cup body, and the first spoiler rib is located on the inside of the side wall of the glass cup body, in order to calculate the L1 value, in this application, the L1 value refers to the radially inward connection line of the edge of the detection plate close to the first spoiler rib and the inner wall of the glass cup body to form an intersection point, and the length of the arc formed by the edge of the first spoiler rib close to the detection plate along the circumference of the inner wall of the glass cup body.

[0045] After research, it was found that, for example, the width of the detection plate 3 is set to multiple sets of fixed values ​​from 6mm to 30mm, with a fixed value set every 2mm, respectively, and the following several common spoiler ribs are made under the same stirring blade 11 speed. Under the premise of consistent, when the liquid flow and / or foam position passes through the first spoiler rib 12 and hits the most convex point radially inward of the spoiler rib at an angle of 45 degrees, it is subjected to a reverse force and falls back in a parabolic form to the center point on the inner wall of the glass cup body 1. The circumferential spacing B from the front side of the first spoiler rib 12 (the schematic diagram of the parabola is referenced Figure 31 ). Among them, taking several common spoiler ribs as examples, the first one: the circumferential width L1' of the first spoiler rib 12 along the inner wall of the glass cup body 1 is 15 mm, and the radial thickness H1 of the first spoiler rib 12 is 6 mm; the second one: the circumferential width L1' of the first spoiler rib 12 along the inner wall of the glass cup body 1 is 10 mm, and the radial thickness H1 of the first spoiler rib 12 is 4 mm; the third one: the circumferential width L1' of the first spoiler rib 12 along the inner wall of the glass cup body 1 is 20 mm, and the radial thickness H1 of the first spoiler rib 12 is 2 mm; the fourth one: the circumferential width L1' of the first spoiler rib 12 along the inner wall of the glass cup body 1 is 10 mm, and the radial thickness H1 of the first spoiler rib 12 is 8 mm. After testing, in the above cases, when the width of the detection plate 3 is 6mm, the maximum value of B is about 12mm; when the width of the detection plate 3 is 8mm, the maximum value of B is about 16mm; when the width of the detection plate 3 is 10mm, the maximum value of B is about 20mm... When the width of the detection plate 3 is 30mm, the maximum value of B is about 60mm. It can be seen that after the liquid flow and / or foam layer passes over the first spoiler rib 12, the value of B is about twice the width of the detection plate 3. In this way, when setting L1 not less than the width of the detection plate 3, it is equivalent to that the value of L1 plus the width of the detection plate 3 is greater than twice the width of the detection plate 3, and the value of L1 plus the width of the detection plate 3 is greater than the value of B.

[0046] In summary, when L1 is set to be not less than the width of the detection plate 3, there is enough space between the first spoiler rib 12 and the detection plate 3, so that either the liquid flow and the foam layer will fall back into the electrode sheet 31 of the detection plate 3 after crossing the first spoiler rib 12; or the liquid flow and the foam layer will fall back behind the detection plate 3 after crossing the first spoiler rib 12, and then adhere to the inner wall of the glass cup body 1 and flow into the electrode sheet 31 of the detection plate 3. Regardless of the above situation, the setting of L1 in this solution can ensure that the detection plate 3 detects a strong and stable charge signal, and can timely feedback the current liquid level status to the main control chip to prevent the slurry from overflowing, and avoid the situation where the detection plate 3 is empty or misdetected and causes the slurry to overflow.

[0047] Preferably, in the present application, the detection board 3 includes an electrode sheet 31 and a control chip 32 disposed below the electrode sheet 31. Since electronic components such as capacitors and capacitors need to be installed on the control chip 32, the width of the detection board 3 should not be too narrow, otherwise the arrangement and precision of the electronic components are more difficult, and the installation is also more complicated. Of course, considering the comfort of the user holding the handle, the cost of the detection board, the installation space of the handle, and other issues, the width of the detection board should not be too large. Therefore, under comprehensive consideration, in the present application, it is preferred to set the width L0 value of the detection board 3 in the range of 10mm to 30mm. For example, the L0 value can be 13mm, 15mm, 17mm, 19mm, 20mm, 22mm, etc.

[0048] In addition to the need to install a device for conducting the liquid level on the detection plate, the liquid flow always rotates in the same direction as the rotation direction of the stirring blade 11. Therefore, when the material liquid flow moves closer and closer to the detection plate 3, the flow rate will increase due to the flow inertia. At this time, by setting the first spoiler rib 12 upstream of the detection plate 3, it can play a certain role in blocking and slowing down the liquid flow. The liquid flow after flowing through the first spoiler rib 12 will continue to move along the inner wall of the glass cup body 1 to the detection plate 3, and the liquid flow will be more stable, and the charge signal detected by the detection plate 3 will be more accurate.

[0049] In a preferred embodiment of the present invention, reference is made to Figure 3 and Figure 4 , the radial thickness of the first spoiler rib 12 is H1, and the circumferential width of the first spoiler rib 12 along the inner wall of the glass cup body 1 is L1'. The applicant found that the thicker the radial thickness H1 of the first spoiler rib 12, the farther the parabola can be thrown after crossing the first spoiler rib 12 when the liquid flow speed is the same, so it is necessary to greatly increase the circumferential spacing L1 between the rear of the detection plate 3 and the front of the first spoiler rib 12 along the inner wall of the glass cup body 1, resulting in a decrease in the total number of spoiler ribs that can be set on the inner wall of the glass cup body 1, weakening the spoiler and crushing uniformity effects on the material. In addition, the circumferential width L1' of the first spoiler rib 12 along the inner wall of the glass cup body 1 will also affect the final landing point of the liquid flow, that is, the larger the L1' value, the greater the probability that the liquid flow will still fall back at the first spoiler rib 12 after crossing the first spoiler rib 12, which is conducive to reducing the risk of empty detection or false detection of the detection plate 3. However, if the L1 value is too large, the cost and the wall thickness of the glass body 1 will increase, and the visibility of the material for the user will decrease.

[0050] In order to solve the above problems at the same time, in this solution, L1≥1.25L1' is set, so that the point where the liquid flow and the foam layer fall back to the inner wall of the glass cup body 1 after passing over the first spoiler rib 12 is between the rear of the detection plate 3 and the front of the first spoiler rib 12. At the same time, the range of H1 / L1' is set between 0.3 and 1.5. On the one hand, when the H1 / L1' value is greater than 1.5, the radial thickness H1 value of the first spoiler rib 12 is too large, the generated liquid flow parabola is too large, and the spacing L1 needs to be increased, which affects the setting of the number of the first spoiler ribs 12 and affects the spoiling and crushing uniformity of the material; on the other hand, it also avoids that when the H1 / L1' value is less than 0.3, the H1 value is too small, the spoiling effect on the material is not obvious, or the L1' value is too large, which also affects the setting of the number of the first spoiler ribs 12, and also increases the cost and the wall thickness of the glass cup body 1, and reduces the visibility of the user to observe the material.

[0051] We know that along the rotation direction of the stirring blade 11, if there is no spoiler rib upstream of the detection plate 3, or the spoiler rib is far from the detection plate 3, the liquid flow and the foam layer will gradually accelerate after passing over the spoiler rib. If the speed when moving to the detection plate 3 is too high, some foam in the foam layer may be thrown to the detection plate 3, but the actual foam layer has not reached the overflow height, and the detection plate 3 will mistakenly detect that the overflow state has been reached, and stop heating or stop / slow down stirring, which prolongs the production cycle.

[0052] To this end, in a preferred embodiment of the present invention, the circumference of the inner wall of the glass cup body 1 is set to C and the L1 value must satisfy the relationship of L1≤1 / 4C, so that the path of the liquid flow and the foam layer, especially the foam layer, moving along the inner wall of the glass cup body 1 to the detection plate 3 after crossing the first spoiler rib 12 will not be too long, thereby reducing the risk of the foam being thrown away. When the foam is thrown away, it is very easy to be thrown into the electrode sheet 31 of the detection plate 3. When the detection plate 3 mistakenly detects that the overflow state has been reached, it is possible to stop heating or stirring, thereby prolonging the entire pulping cycle.

[0053] In a preferred embodiment of the utility model, it is based on the premise that the charge signal can still be detected after the liquid flow and / or foam layer passes through the first spoiler rib 12. It can be understood that the larger the radial thickness H1 value of the first spoiler rib 12, the larger the parabola formed by the liquid flow and / or foam layer after passing through the first spoiler rib 12, and the greater the probability of falling back to the position in front of the vertical center axis of the detection plate 3. On the contrary, the greater the probability of falling back to the position behind the vertical center axis of the detection plate 3. However, in any case, the electrode sheet 31 of the detection plate 3 has a sufficiently large width, so whether it falls in front of the vertical center axis of the detection plate 3 or falls behind the vertical center axis of the detection plate 3, the liquid flow and foam layer that fall back are more, and the charge signal is strong and stable, which helps to improve the accuracy of the detection.

[0054] To this end, in this solution, H1 and L3 are set to satisfy: 0.1

[0055] Furthermore, we know that the most common problem in the operation of the food processor is the overflow of pulp foam. The high-temperature pulp foam can easily scald the user, and the overflowing pulp foam sticks to the outer wall of the glass cup body 1 and the cup cover, which can easily increase the difficulty of cleaning.

[0056] ​In a preferred embodiment of the present invention, reference is made to Figure 1 , by setting the detection plate 3 in a strip shape, including a plurality of vertically distributed electrode sheets 31, the plurality of electrode sheets 31 are arranged at intervals, which can avoid signal interference between the electrode sheets and can realize real-time monitoring of the liquid level in the glass cup body 1 under different material volumes. In addition, the highest electrode sheet 31 is mainly used for overflow prevention detection, that is, the top electrode sheet is mainly used for overflow prevention detection, and the top of the spoiler rib is set not lower than the bottom of the highest electrode sheet 31, so that the spoiler rib can buffer the flow rate of the liquid flow and foam passing through the top electrode sheet 31, and the liquid flow and foam, especially the foam, that pass through the spoiler rib after buffering can be stably attached to the inner wall of the glass cup body 1, so that the charge signal detected at the top is strong and stable, and the stability of overflow prevention detection is effectively improved.

[0057] Furthermore, the detection board 3 includes a plurality of electrode sheets 31 distributed vertically and a control chip 32, wherein the control chip 32 is disposed below the lowest electrode sheet 31, and electronic components such as capacitors and resistors are mounted on the back of the control chip 32. In this embodiment, the first spoiler rib 12 is disposed not lower than the bottom end of the lowest electrode sheet 31.

[0058] It is understandable that the stirring blade 11 is often located in the area near the bottom of the glass body 1. For example, in this embodiment, the stirring blade 11 is located at the bottom of the glass body 1, and the stirring blade 11 will fully stir the nearby materials. At this time, the materials at the bottom can be crushed well without the function of the spoiler ribs, and the area of ​​the control chip 32 does not need to consider the strength of the charge signal. Therefore, within the height range of the control chip 32 below the lowest electrode sheet 31, the spoiler ribs can be omitted to save costs.

[0059] In a preferred embodiment of the present invention, reference is made to Figure 3 , the center angle ɑ formed by the detection plate and the first spoiler rib relative to the center of the glass cup body ranges from 30° to 90°, so that the spoiler ribs can be provided along the inner wall of the glass cup body 1 to enhance the spoiler effect, while avoiding the spoiler ribs being too dense, which would reduce the visibility of the material for users. The specific measurement of the center angle ɑ refers to that the angle formed by the center of the detection plate 3 and the center of the first spoiler rib 12 relative to the center line of the glass cup body 1 is between 30° and 90°. Furthermore, in a preferred embodiment of the present invention, with reference to Figure 1 , 2 In order to enhance the spoiling effect of the spoiler ribs on the material and improve the uniformity of crushing, a second spoiler rib 13 is also provided in front of the detection plate 3. At the same time, the second spoiler rib 13 and the detection plate 3 are staggered along the circumference of the glass cup body 1 to avoid extending the path of the charge signal between the liquid level and the detection plate 3, which affects the strength of the charge signal.

[0060] However, considering that the liquid flow and foam layer may pass through the first spoiler rib 12 and smoothly enter the electrode sheet 31 of the detection plate 3, when flowing through the second spoiler rib 13, they will be subject to the reaction force of the second spoiler rib 13 toward the detection plate 3, so that a small amount of liquid flow and foam layer will fall back into the electrode sheet 31 of the detection plate 3. At the same time, since there is continuous liquid flow and foam layer pouring in from the rear of the detection plate 3, the liquid flow and foam layer falling back will accumulate on the liquid flow and foam layer behind the detection plate 3, so that the detection plate 3 mistakenly detects that the slurry is overflowing. In addition, when the stirring blade 11 can rotate in the opposite direction, this situation will also occur.

[0061] Therefore, in this solution, the spoiler ribs also include a second spoiler rib 13 adjacent to the other side of the detection plate 3, and the circumferential distance between the edge of the detection plate 3 and the second spoiler rib 13 on the opposite side along the inner wall of the glass cup body is L2, wherein L2 is not less than the width of the detection plate 3, so as to avoid the liquid flow and the foam layer from rebounding and falling back onto the detection plate 3 under the action of the second spoiler rib 13, resulting in the occurrence of misdetection. The specific principle is consistent with the above-mentioned setting of the L1 value not less than the width of the detection plate 3, and will not be repeated here.

[0062] Furthermore, in order to improve the stability of the liquid flow and the foam layer flow, the second spoiler rib 13 and the first spoiler rib 12 are arranged symmetrically relative to the detection plate 3. It should be noted that the symmetrical arrangement here means that the distance between the second spoiler rib 13 and the detection plate 3 is equal to the distance between the first spoiler rib 12 and the detection plate 3, and they are located on both sides of the detection plate 3 respectively.

[0063] Alternatively, multiple spoiler ribs may be provided, and the multiple spoiler ribs may be evenly distributed along the inner wall of the glass cup body 1, which may not only improve the spoiler effect, but also improve the stability of the liquid flow and the foam layer flowing along the inner wall of the glass cup body 1. For example, when two spoiler ribs are provided, they may be composed of a first spoiler rib and a second spoiler rib; when three spoiler ribs are provided, they may be composed of a first spoiler rib, a second spoiler rib, and other spoiler ribs located between the upstream of the first spoiler rib and the downstream of the second spoiler rib along the rotation direction of the stirring blade.

[0064] Specifically, in a preferred embodiment, the spoiler ribs are provided in plurality, the detection plate 3 is connected to the central axis of the glass body 1 along a vertical axis of symmetry to form a reference surface, and the plurality of spoiler ribs are arranged in an axisymmetric manner relative to the reference surface. Figure 3In this case, four spoiler ribs are provided, including a first spoiler rib 12, a second spoiler rib 13, and two spoiler ribs provided between the upstream of the first spoiler rib 12 and the downstream of the second spoiler rib 13. The aforementioned four spoiler ribs are staggered with the detection plate 3 and are arranged axially symmetrically with respect to the reference surface.

[0065] In addition, it should be noted that the liquid heater of the present invention is not limited to the food processor with the motor 41 and the cup body integrated as disclosed in the embodiment of the present invention, but can also be a soymilk machine with the motor 41 mounted on top, a wall-breaking machine with the cup body and the machine base 4 separated, and a food processor that can achieve automatic pulp discharge and automatic cleaning without hand washing. Moreover, the food processor of the present invention can also be set to be applied to heating appliances that can perform pulp boiling operations, rice paste making, etc., such as health pots, health pots, etc. Some health pots and health pots are also provided with a stirring blade 11.

[0066] Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A food processor for detecting liquid level in the air, comprising a glass body, a stirring blade arranged in the glass, and a handle installed on one side of the glass body, a detection plate for detecting liquid level in the air is hidden between the glass body and the handle, and a plurality of spoiler ribs protruding radially inward are arranged on the inner side wall of the glass body, characterized in that: The multiple spoiler ribs and the detection plate are staggered along the circumference of the glass cup body. Along the rotation direction of the stirring blade, the spoiler ribs include a first spoiler rib that is closest to the detection plate. The first spoiler rib is located upstream of the detection plate. The circumferential distance between the edge of the detection plate on the opposite side of the first spoiler rib along the inner wall of the glass cup body is L1, wherein L1 is not less than the width of the detection plate.

2. The food processing machine with remote liquid level detection according to claim 1, characterized in that: The radial thickness of the first spoiler rib is H1, and the circumferential width of the first spoiler rib along the inner wall of the glass cup body is L1', wherein L1, H1 and L1' satisfy: L1≥1.25L1', 0.3≤H1 / L1'≤1.

5.

3. The food processing machine with remote liquid level detection according to claim 1, characterized in that: The circumference of the inner wall of the glass body is C, wherein C and L1 satisfy: L1≤1 / 4C.

4. The food processing machine for remote liquid level detection according to any one of claims 1 to 3, characterized in that: The spoiler rib also includes a second spoiler rib arranged adjacent to the other side of the detection plate, and the circumferential distance between the edge of the detection plate on the opposite side of the second spoiler rib along the inner wall of the glass cup body is L2, wherein L2 is not less than the width of the detection plate.

5. The food processing machine with remote liquid level detection according to claim 4, characterized in that: The second spoiler rib and the first spoiler rib are arranged symmetrically relative to the detection plate.

6. The food processing machine with remote liquid level detection according to claim 1, characterized in that: The radial thickness of the first spoiler rib is H1, the detection plate includes a detection area, the width of the detection area is L3, wherein H1 and L3 satisfy: 0.1<H1 / L3≤1; or, The width of the detection plate ranges from 10 mm to 30 mm.

7. The food processing machine with remote liquid level detection according to claim 1, characterized in that: The detection plate is in a strip shape and includes a plurality of electrode sheets distributed vertically. The top end of the first spoiler rib is arranged not lower than the bottom end of the highest electrode sheet.

8. The food processing machine with remote liquid level detection according to claim 1, characterized in that: The detection plate is strip-shaped and includes a plurality of electrode sheets distributed vertically and a control chip. The control chip is arranged below the lowest electrode sheet, and the first spoiler rib is arranged not lower than the bottom end of the lowest electrode sheet.

9. The food processing machine with remote liquid level detection according to claim 1, characterized in that: A plurality of the spoiler ribs are evenly arranged along the inner wall of the glass body; or, The detection plate is connected to the central axis of the glass body along a vertical axis of symmetry to form a reference surface, and the plurality of spoiler ribs are arranged in an axisymmetric manner relative to the reference surface.

10. The food processing machine with remote liquid level detection according to claim 1, characterized in that: The central angle formed by the detection plate and the first spoiler rib relative to the center of the glass body ranges from 30° to 90°.

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