A food processor

Abstract

The application discloses a food processor, which comprises an open cup body, a cutter disc arranged at the lower end opening of the cup body, a cup base arranged below the cup body and a crushing cutter arranged in the cup body. The bottom wall of the cutter disc is concave to form a cavity. The bottom wall of the cavity is inclined. The crushing cutter is perpendicular to the bottom wall of the cavity. The cutter disc is provided with a stepped portion, which comprises the side wall of the cavity and an annular flange extending from the side wall of the cavity to the cup body. The annular flange and the inner wall of the cup body form a slow-flow space for delaying the flow of materials back to the cavity. The width of the annular flange corresponding to the highest point of the bottom wall of the cavity is greater than the width of the annular flange corresponding to the lowest point of the bottom wall of the cavity. The application can solve the technical problem that the inclined bottom wall of the heating disc causes the materials to quickly deposit towards the low-position side area of the heating disc when the materials are crushed, so that the materials around the crushing cutter are not uniformly mixed and stirred, and the crushing effect is improved.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, specifically to a food processing machine. Background Technology

[0002] With the improvement of people's living standards and the diversification of kitchen ingredients, food processors have become one of the indispensable household appliances in people's kitchens. Existing food processors usually use a cup body with openings at the top and bottom and a blade plate to form a food grinding chamber. The blade plate is equipped with grinding blades to grind the food in the grinding chamber, thereby realizing the grinding and processing of food.

[0003] To improve the pulverization effect of food, existing technologies disclose technical solutions that improve the structure of the blade assembly. For example, patent application number CN202020597509.X (hereinafter referred to as Patent 1) discloses a cooking cup with a blade mounted on an inclined bottom wall at the bottom opening of the cup body. The pulverizing blade is vertically mounted on the bottom wall of the blade. Due to the inclined arrangement of the pulverizing blade, when the blade rotates at high speed, it forms an inclined vortex inside the cup body. This vortex continuously pulls the material flowing to the upper part of the cup body towards the pulverizing blade for pulverization, achieving up-and-down movement and improving the pulverization effect. However, as the material moves with the inclined vortex, it falls onto the blade under the action of gravity. Because the bottom wall of the blade is inclined relative to the horizontal plane, the material settles towards the lower side of the blade when it falls. The material settled in the lower side of the blade cannot flow back to the pulverizing blade for pulverization, especially large particles, resulting in uneven particle size, poor pulverization, and poor pulping effect.

[0004] To address the problem of materials falling and settling on the blade disc due to gravity and failing to be pulverized, patent application CN201910980693.8 (hereinafter referred to as Patent 2) discloses a food processing machine with good cleaning effect. This machine includes a cup body with openings at the top and bottom, a blade disc with a flat bottom wall, and a cup body support. The lower opening of the cup body aligns with the mounting skirt at the upper end of the blade disc. The cup body support connects and secures the cup body and blade disc together, and ensures that the inner wall of the cup body is aligned with the inner wall of the blade disc, with an alignment deviation of no more than 2mm. In other words, if precise alignment cannot be achieved, the mounting skirt forms a radially equal-width annular protrusion protruding towards the center of the cup body, with a width of no more than 2mm. This prevents materials from falling onto this annular protrusion due to gravity during pulverization and being unable to be washed by the liquid flow driven by the pulverizing blades. This allows the materials to fall back into the blade disc for pulverization, improving the pulverization effect and facilitating cup cleaning.

[0005] Although Patent 2 addresses the technical problem of preventing material from falling onto the annular protrusion under gravity and failing to be flushed into the cutter disc by the circulating liquid flow within the cup by setting an alignment deviation between the inner wall of the cup and the inner wall of the cutter disc—that is, limiting the width of the radially equal-width annular protrusion formed at the top of the cutter disc—it also avoids the problem of material depositing on the lower side of the cutter disc under gravity due to the inclined bottom wall of the cutter disc, thus preventing it from flowing back to the pulverizing blades for further pulverization. Therefore, its technical solution does not solve the technical problem present in Patent 1. It is evident that the technical problem of insufficient pulverization, uneven particle size, and poor pulping effect caused by the inclined bottom wall of the cutter disc and the pulverizing blades perpendicular to it during pulverization, where material falls towards the lower side of the cutter disc under gravity and deposits, unable to flow back to the pulverizing blades for further pulverization, urgently needs to be solved. Summary of the Invention

[0006] The purpose of this invention is to provide a food processing machine that addresses the technical problem of material settling towards the lower side of the cutter disc due to gravity during crushing, provided that the bottom wall of the cutter disc is inclined and the crushing blades are perpendicular to the bottom wall of the cutter disc in existing food processing machines. This problem prevents the material from flowing back to the crushing blades for further crushing, especially large particles, resulting in uneven particle size, poor particle size, and unsatisfactory pulping effect.

[0007] To achieve the above objectives, the present invention provides a food processing machine, comprising a cup body with openings at the top and bottom, a blade disc with an opening at the lower end of the cup body, a cup base located below the cup body, and a pulverizing blade located inside the cup body. The bottom wall of the blade disc is recessed to form a cavity, and the bottom wall of the cavity is inclined. The pulverizing blade is perpendicular to the bottom wall of the cavity. The blade disc has a stepped portion, which includes a side wall of the cavity and an annular flange extending from the side wall of the cavity towards the cup body. The annular flange and the inner wall of the cup body enclose a slow-flow space that delays the flow of material back into the cavity. The width of the annular flange at the highest point of the bottom wall of the cavity is greater than the width of the annular flange at the lowest point of the bottom wall of the cavity.

[0008] Optionally, the width of the annular flange gradually decreases from the highest point of the bottom wall of the cavity toward the lowest point.

[0009] Optionally, the plane containing the bottom wall of the cavity extends to intersect the annular flange.

[0010] Optionally, the bottom wall of the cavity extends upward at an angle to the radially inner side of the annular flange.

[0011] Optionally, the highest point of the bottom wall of the cavity intersects with the annular flange.

[0012] Optionally, the annular flange is inclined downwards from the outside to the inside.

[0013] Optionally, the annular flange forms a first inclined angle with the horizontal plane, and the bottom wall of the cavity forms a second inclined angle with the horizontal plane, wherein the first inclined angle is smaller than the second inclined angle.

[0014] Optionally, the blade axis of the shredder is offset from the center of the blade disc and positioned close to the lower side of the cavity.

[0015] Optionally, the bottom of the cutter head is provided with a heating element, which includes an arc-shaped heating tube and terminals at both ends of the heating tube, with the terminals corresponding to the lower side area of ​​the cavity.

[0016] Optionally, the inner wall of the cup body is provided with multiple baffles extending along the axial direction of the cup body, and the height of the top of the multiple baffles increases in a gradient along the rotation direction of the crusher.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. This application features a cavity formed by a recessed bottom wall of the cutter disc, with the bottom wall of the cavity inclined. With the pulverizing blade perpendicular to the bottom wall of the cavity, a stepped portion is provided on the cutter disc. The stepped portion includes the side wall of the cavity and an annular flange extending from the side wall of the cavity towards the cup body. The annular flange and the inner wall of the cup body enclose a slow-flow space that delays the return of material to the cavity. When the material moves with the inclined vortex, it will fall into this slow-flow space due to its own gravity, thereby changing its original flow direction and slowing the flow rate. This prevents the material from falling directly to the lower side of the cavity or falling to the bottom wall of the cavity and settling along the inclined bottom wall towards the lower side of the cavity, thus reducing material deposition in the lower side of the cavity. The material can then flow back to the area around the pulverizing blade for direct pulverization. However, due to the inclined vortex inside the cup, the material inside the cup is mostly distributed in the high side area of ​​the corresponding cavity. When the material falls into the slow flow space due to gravity, if the width of the annular flange used to receive the material in the slow flow space is too small, when too much material is deposited and cannot be contained by the slow flow space, it cannot be flushed back to the area around the crushing blade in time by the inclined vortex. Some material will be pushed down and settle along the inclined bottom wall towards the low side area of ​​the cavity. At the same time, the material inside the cup is subject to less centrifugal force in the low side area of ​​the corresponding cavity. When the material moves to the slow flow space corresponding to the low side area of ​​the cavity, the rotational flow rate of the material will further decrease. If the width of the annular flange used to receive the material in the slow flow space is too large, the material cannot be returned to the area around the crushing blade to be crushed due to the smaller rotational flow rate. Instead, it will be deposited on the annular flange. When the material is deposited to a certain extent and too much material is deposited and cannot be contained by the slow flow space, some material will also be pushed down to the low side of the cavity for deposition. To address the technical issue of material settling on the lower side of the cavity due to the design of the slow-flow space, which delays the return of material to the cavity, this application addresses this problem by making the width of the annular flange at the highest point of the cavity's bottom wall greater than the width of the annular flange at the lowest point. This ensures that the slow-flow space on the higher side of the cavity is large enough to accommodate more falling material, reducing the amount of material falling back to the bottom wall. This allows the material to flow back with the rotating liquid flow to the area around the pulverizer for direct pulverization. Conversely, the relatively smaller width of the annular flange in the slow-flow space on the lower side of the cavity reduces the loss of rotational flow velocity, allowing the material to also flow back with the rotating liquid flow to the area around the pulverizer for better pulverization. This effectively delays the material's return to the cavity and prevents deposition on the lower side, ensuring that the material, when falling under gravity, flows back with the rotating liquid flow to the area around the pulverizer for pulverization. This improves the uniformity and fineness of the pulverized particles, enhancing the pulping effect.

[0019] 2. This application improves the matching between the width of the annular flange and the material distribution within the cup formed by the inclined vortex by setting the width of the annular flange to gradually decrease from the highest point to the lowest point of the bottom wall of the cavity. In other words, in the circumferential direction, the carrying capacity of the slow flow space is relatively matched with the material distribution within the cup, reducing the phenomenon of material being pushed into the cavity and depositing towards the lower side of the cavity. At the same time, the flow rate loss of the material flowing back into the cavity by the annular flange gradually decreases from the high side of the cavity to the low side. In the circumferential direction, the matching between the flow rate of the material after passing through the slow flow space and the flow rate during material crushing is improved, so that the material has sufficient flow rate after passing through the slow flow space to smoothly flow back to the vicinity of the crushing blade for crushing, instead of falling into the cavity and depositing towards the lower side of the cavity, thus failing to flow back and contact the crushing blade, thereby improving the crushing effect of the material.

[0020] 3. By extending the plane of the bottom wall of the cavity to intersect with the annular flange, this application can effectively reduce the effective crushing volume of the cavity caused by an excessively steep slope of the bottom wall, and prevent material falling from the high side of the cavity into the cavity from rapidly rushing towards the low side along the inclined bottom wall of the cavity. This reduces the probability of the settled material contacting the crushing blade, thus reducing the crushing effect. It also avoids the problem of overflow caused by a steeply inclined vortex forming in the cup due to an excessively steep slope of the bottom wall of the cavity. At the same time, it can also ensure that the crushing cavity enclosed by the cavity and the cup can form a better inclined vortex, generating better turbulence and improving the crushing effect.

[0021] 4. For materials in the high side zone of the cavity, after passing through the slow flow space, some materials may not flow directly back to the vicinity of the crushing blade, but fall into the cavity and deposit along the inclined bottom wall of the cavity towards the low side zone. This application eliminates the height difference between the annular flange and the bottom wall of the cavity by extending the bottom wall of the cavity inclined upward to the radially inner side of the annular flange. This avoids a large change in the flow velocity of the material when it falls into the cavity, preventing it from rushing rapidly towards the low side zone of the cavity along the inclined bottom wall of the cavity. This reduces the probability of the material contacting the crushing blade, allowing the material to flow towards the low side zone of the cavity at a relatively slow speed. This increases the probability of the material being agitated and pulled back to the vicinity of the crushing blade when flowing under it and being crushed, further improving the crushing effect of the material.

[0022] 5. During material crushing, the material moving in an inclined vortex will fall into the slow flow space due to gravity. The annular flange of the slow flow space can not only catch the falling material, but also reduce the flow rate of the falling material to a certain extent, thus slowing down the flow rate of the material. This can cause some material to rotate at a slower speed, which may result in it not being able to flow back to the crushing blade and instead depositing on the annular flange.

[0023] Especially when material settles to a certain extent, and the material becomes too much to be contained in the slow-flow space, some material will be pushed down and deposited in the lower side area of ​​the cavity. This application uses an annular flange that is tilted downwards from the outside to the inside, which can guide the material that has fallen into the slow-flow space back to the vicinity of the crushing blade, thereby improving the crushing effect of the crushing blade on the material.

[0024] 6. Furthermore, this application forms a first inclined angle between the annular flange and the horizontal plane, and a second inclined angle between the bottom wall of the cavity and the horizontal plane. The first inclined angle is smaller than the second inclined angle. Under the premise of ensuring that the annular flange effectively guides the material back to the vicinity of the crushing blade, for materials that cannot flow back to the vicinity of the crushing blade and fall onto the bottom wall of the cavity, the inclination of the annular flange is smaller than the inclination of the bottom wall of the cavity. This prevents the material in the high side area of ​​the cavity from experiencing a large sudden change in flow velocity when falling into the cavity. Instead, it allows the material to flow to the low side area of ​​the cavity at a relatively slow speed, increasing the probability that the material will be agitated and pulled back to the vicinity of the crushing blade when flowing under it and be crushed, thereby further improving the crushing effect of the material.

[0025] 7. By setting the blade shaft of the pulverizer to be offset from the center of the blade disc and close to the lower side of the cavity, the pulverizer can agitate the material deposition area formed in the lower side of the cavity, thereby improving the pulverizing effect and making the material more finely pulverized.

[0026] 8. Because materials tend to accumulate in the lower side area of ​​the cavity, the bottom of the cutter head in this application is equipped with a heating element. The heating element includes an arc-shaped heating tube and terminals at both ends of the heating tube. The terminals are set in the lower side area of ​​the cavity. This can avoid the heat source from concentrating on heating the material in the lower side area of ​​the cavity, thus preventing the material from sticking to the bottom.

[0027] 9. This application features multiple turbulence ribs extending axially along the inner wall of the cup body. The height of the tops of these ribs increases gradually along the rotation direction of the pulverizing blade. As the slurry rotates, the resistance encountered by the slurry gradually increases, reducing slurry turbulence, minimizing vibration caused by the liquid flow impact on the cup body, and improving noise reduction. Simultaneously, when the liquid flows down from the highest turbulence rib, it creates a height difference for agitation, resulting in a larger impact and making it easier for the material to reach the pulverizing area of ​​the pulverizing blade, thereby improving the pulverizing effect. Attached Figure Description

[0028] Figure 1 This is a cross-sectional schematic diagram of a food processing machine in some embodiments of the present invention;

[0029] Figure 2 for Figure 1 A magnified view of part A in the image;

[0030] Figure 3 for Figure 1 Schematic diagram of the middle cutter head assembly;

[0031] Figure 4 for Figure 3 Top view of the cutter head structure;

[0032] Figure 5 for Figure 3 Cross-sectional schematic diagram of the middle cutter head structure;

[0033] Figure 6 for Figure 1 Schematic diagram of another embodiment of the middle cutter head assembly;

[0034] Figure 7 This is a cross-sectional schematic diagram of a food processing machine in some embodiments of the present invention;

[0035] Figure 8 for Figure 7 Schematic diagram of the middle cutter head structure;

[0036] Figure 9 for Figure 8 Top view of the cutter head structure;

[0037] Figure 10 for Figure 8 A cross-sectional view of the cutter head structure.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Cup body; 11. Receiving part; 12. Turbulence rib; 2. Cutter disc; 21. Cavity; 211. Bottom wall; 2111. Lowest point of bottom wall of cavity; 2112. Highest point of bottom wall of cavity; 212. Side wall; 22. Stepped part; 221. Annular flange; 222. Arc-shaped transition part; 23. Rotating zone; 25. High side zone of cavity; 26. Low side zone of cavity; 3. Cup base; 4. Slow flow space; 5. Crushing blade; 51. Cutter shaft; 52. Blade; 6. Seal; 7. Heating element; 71. Heating tube; 72. Terminal; 8. Base; 81. Motor; 811. Motor shaft; 9. Upper coupling; 10. Lower coupling. Detailed Implementation

[0040] To more clearly illustrate the overall concept of the present invention, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0041] Many specific details are set forth in the following description to provide a thorough understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore, the scope of protection of the invention is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, embodiments of the invention and features thereof can be combined with each other.

[0042] Furthermore, in the description of this invention, it should be understood that the terms "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] The purpose of this application is to overcome the existing technical problem in the food processing machine, which is that the cutter disc assembly is designed with an inclined bottom wall and the pulverizing blades perpendicular to the bottom wall of the cutter disc. During pulverization, material, due to gravity, falls and deposits in the lower side area of ​​the cutter disc, failing to flow back to the pulverizing blades for further pulverization. This technical problem prevents the material deposited in the lower side area of ​​the cutter disc from being pulverized, especially large particles (such as soybeans, black beans, peas, grapes, and large pieces of fruit). Because of their greater weight, these materials are more likely to accumulate and deposit in the lower side area of ​​the cutter disc, resulting in uneven particle size, poor pulverization, and a poor pulverization effect. Particularly during the cooking of slurries, the thicker deposits in the lower side area of ​​the cutter disc cause the bottom to burn during heating, further worsening the texture of the slurry.

[0046] This application provides a food processing machine that allows the material falling during crushing to flow back to the vicinity of the crushing blade for better crushing, thereby reducing material deposition in the lower side area of ​​the blade disc, which helps to improve the degree of crushing and enhance the crushing effect.

[0047] The food processing machine in this application can be a similar food processing machine with a material crushing function, such as a soy milk maker, a high-speed blender, a juicer, or a food processor.

[0048] like Figure 1 As shown, this embodiment illustrates a food processing machine, including a cup body 1 with openings at the top and bottom, a blade disc 2 with an opening at the lower end of the cup body 1, and a cup base 3 located below the cup body 1. A pulverizing blade 5 is provided inside the cup body 1, comprising a blade shaft 51 and blades 52 fixed to the top of the blade shaft 51. A baffle 12 is provided on the inner wall of the cup body 1. The bottom wall of the cup body 1 extends inward to form a receiving portion 11. The blade disc 2 overlaps on the receiving portion 11. A sealing element 6 is provided between the blade disc 2 and the cup body 1. The blade disc 2 and the cup base 3 are fastened together by screws, clamping and fixing the cup body 1, so that the cup body 1 and the blade disc 2 enclose a pulverizing chamber, thereby improving the assembly efficiency of the food processing machine. A base 8 is provided below the cup base 3, and an inclined motor 81 is provided inside the base 8. The motor 81 and the pulverizing blade 5 are connected by an upper coupling 9 and a lower coupling 10, enabling the motor 81 to drive the pulverizing blade 5 to rotate.

[0049] In this embodiment, such as Figure 1-5 As shown, the bottom wall of the blade disc 2 is recessed to form a cavity 21, and the bottom wall 211 of the cavity is inclined. The blade shaft 51 of the pulverizing blade 5 is perpendicular to the bottom wall 211 of the cavity. The blade disc 2 has a stepped portion 22, which includes the side wall 212 of the cavity and an annular flange 221 extending from the side wall 212 of the cavity towards the cup body. The annular flange 221 and the inner wall of the cup body enclose a slow-flow space 4 that delays the flow of material back into the cavity. The annular flange 221 overlaps the receiving portion 11, which facilitates the clamping and fixing of the cup body 1 by the blade disc 2 and the cup base 3.

[0050] In this embodiment, such as Figure 3-5As shown, the stepped portion 22 includes a side wall 212 of the cavity, an annular flange 221, and an arc-shaped transition portion 222. The side wall 212 of the cavity and the annular flange 222 are connected by the arc-shaped transition portion 222. Due to the presence of the arc-shaped transition portion 222, the flow rate loss of the material flowing back to the vicinity of the crushing blade 5 after passing through the slow flow space 4 can be reduced, allowing more material to flow back to the vicinity of the crushing blade 5 and be crushed. It can also relatively alleviate the sudden change in flow rate of the material falling to the bottom wall 211 of the cavity, which cannot flow back to the vicinity of the crushing blade 5 and falls to the bottom wall 211 of the cavity. This reduces the deposition rate of the material towards the low side area 26 of the cavity and increases the probability that the material can flow back to the vicinity of the crushing blade 5 and be crushed again during the process of settling to the low side area 26 of the cavity, thereby improving the crushing effect.

[0051] Understandably, the annular flange 222 is formed by the top of the side wall 212 of the cavity extending toward the side wall of the cup body 1, which is a well-known technology in the field and will not be elaborated here.

[0052] Understandably, the step portion 22 may also include the side wall 212 of the cavity and the annular flange 221, wherein the side wall 212 of the cavity extends directly into the inner wall of the cup body 1 to form the annular flange 221. In other words, the step portion 22 is formed by the side wall 212 of the cavity and the annular flange 221 being directly connected by a corner.

[0053] In this embodiment, such as Figure 2 As shown, the slow-flow space 4 refers to the annular corner area formed by the annular flange 221 and the cup body 1. It is used to receive materials falling due to gravity and can change the original flow direction and slow down the flow rate of the materials. This prevents or delays the materials from falling directly to the lower side area 26 of the cavity or falling to the bottom wall 211 of the cavity and settling along the inclined bottom wall 211 towards the lower side area 26 of the cavity, allowing more material to flow back to the area around the crushing blade 5 for further crushing. Figure 2 The two ends of the dotted line in the diagram intersect with the inner wall of the cup body 1 and the inner side of the annular flange 211 to indicate the slow-flow space 4.

[0054] like Figure 1 and 2As shown, due to the inclined arrangement of the bottom wall 211 of the cavity, the crushing blade 5 is perpendicular to the bottom wall 211 of the cavity, resulting in the inclined arrangement of the crushing blade 5. Compared with the vertically arranged crushing blade on the bottom wall 211 of the cavity, the crushing blade 5 will form a more inclined vortex with a larger inclination when rotating at high speed in the cup body 1, generating greater turbulence in the cup body. This causes more material to fall towards the cavity 21 under the action of gravity during crushing. Because the material is driven by the inclined crushing blade 5, it will rotate circumferentially along the inner wall of the cup body 1 under the action of centrifugal force. When falling, almost all the material will pass through the slow flow space 4, which can change the original flow direction of the material and slow down the flow rate, preventing and delaying the material from falling directly to the lower side area 26 of the cavity or falling to the bottom wall 211 of the cavity and settling towards the lower side area 26 of the cavity along the inclined bottom wall 211. This reduces the deposition of material in the lower side area 26 of the cavity, and the material can flow back to the area around the crushing blade 5 for direct crushing.

[0055] In existing technologies, assembly issues in food processing machines can lead to material residue at the junction of the cup and the blade, resulting in uneven pulverization of the material within the cup and hindering post-processing cleaning. To address this problem, Patent 2 discloses a method that precisely aligns the inner wall of the cup with the inner wall of the blade, with an alignment deviation of no more than 2mm. This deviation is understood to be limited to between -2mm and 2mm to prevent material buildup at the junction from being flushed away by the circulating liquid flow within the cup and pulverized around the blades. In other words, under ideal assembly conditions, the inner wall of the cup and the inner wall of the blade are precisely aligned, ensuring that material falls directly towards the blade without depositing at the junction, facilitating cleaning.

[0056] However, those skilled in the art know that due to the machining precision and installation errors of the cup and the blade, an alignment deviation that is not zero is unavoidable. If this alignment deviation is less than zero but greater than -2mm, the inner wall of the cup will guide the material to fall onto the blade at the joint between the cup and the blade. If dirt remains in this area, the user may easily miss it and fail to clean it, or even if they notice it, it will be difficult to clean. Therefore, as a compromise, the deviation is set to be less than 2mm, which makes it easier for the user to observe and clean. In other words, if the alignment deviation is greater than zero but less than 2mm, the mounting skirt at the top of the blade will form an annular boss protruding towards the center of the cup, i.e., forming an annular boss of equal radial width, with a width not exceeding 2mm. This prevents the material from falling onto this annular boss due to gravity during crushing and being unable to be washed by the liquid flow driven by the crushing blade, thus allowing the material to fall back into the blade for crushing, improving the crushing effect and facilitating the cleaning of the cup.

[0057] From the perspective of someone skilled in the art, considering the technical problem, technical solution, and technical effect of Patent 2, Patent 2 undoubtedly suggests avoiding alignment deviations greater than 0. That is, the annular protrusion at the junction of the cup and the blade should be eliminated. Even if objective assembly reasons prevent it from being removed, the alignment deviation should be less than 2mm to minimize the area of ​​the annular protrusion. This ensures that the material at the junction of the cup and the blade can be flushed back to the vicinity of the blade by the circulating liquid flow driven by the pulverizing blade, thus improving the pulverizing effect and cleaning convenience. Furthermore, the bottom wall of the blade in Patent 2 is horizontally positioned, eliminating the problem of material falling and depositing on the lower side of the blade under gravity due to an inclined bottom wall, preventing it from flowing back to the vicinity of the pulverizing blade for further pulverization. Patent 2 also does not provide any guidance on this technical problem. Therefore, someone skilled in the art cannot obtain any effective technical means from Patent 2 to obtain the technical solution of this application and solve the technical problem in this application.

[0058] However, in this application, as Figure 1 As shown, due to the inclined vortex inside the cup 1, the material inside the cup 1 is more concentrated in the high side area 25 of the corresponding cavity. When the material falls into the slow flow space 4 due to gravity, if the width of the annular flange 221 of the slow flow space 4 used to receive the material is too small, when too much material accumulates and cannot be contained by the slow flow space 4, it cannot be flushed back to the vicinity of the crushing blade 5 in time. Some material will be pushed down and settle along the inclined bottom wall 211 towards the low side area 26 of the cavity. At the same time, the material inside the cup 1 is subjected to... Because the centrifugal force on the lower side zone 26 of the cavity is small, when the material moves to the slow-flow space 4 corresponding to the lower side zone 26, the rotational velocity of the material will further decrease. If the width of the annular flange 221 of the slow-flow space 4 used to receive the material is too large, the material cannot flow back to the vicinity of the crushing blade 5 to be crushed due to the small rotational velocity, but instead deposits on the annular flange 221. When the deposition reaches a certain level, if too much material is deposited and cannot be contained by the slow-flow space 4, some material will also be pushed down to the lower side 26 of the cavity for deposition. Figure 1 The liquid distribution inside the middle cup 1 represents the liquid distribution when the pulverizer 5 rotates at high speed and forms an inclined vortex inside the cup 1. The elliptical dashed path represents the trajectory of the liquid flow inside the cup 1.

[0059] To address the technical problem of material flowing back to cavity 21 via the slow-flow space 4, which causes material to fall and deposit in the lower side region 26 of the cavity due to the design of the slow-flow space 4, such as... Figure 3-5As shown, in this embodiment, the width of the annular flange 221 corresponding to the highest point 2112 of the bottom wall of the cavity is greater than the width of the annular flange 221 corresponding to the lowest point 2111 of the bottom wall of the cavity. This ensures that the slow-flow space 4 at the high side 25 of the cavity is large enough to accommodate more falling material and reduce the material falling back to the bottom wall 211 of the cavity. This allows the material to flow back to the vicinity of the crushing blade 5 with the rotating liquid flow and be directly crushed. At the low side 26 of the cavity, the slow-flow space 4 has a relatively small width of the annular flange 221, which reduces the loss of the rotational flow velocity of the liquid flow at that location. This allows the material to flow back to the vicinity of the crushing blade 5 with the rotating liquid flow and be crushed. The slow-flow space 4 can effectively delay the material from flowing back to the cavity 21 and depositing on the low side 26 of the cavity. This ensures that the material can flow back to the vicinity of the crushing blade 5 with the rotating liquid flow when falling under gravity and be crushed. This improves the uniformity and fineness of the crushed particle size and enhances the pulping effect.

[0060] Specifically, in this implementation, the width W1 of the annular flange 221 corresponding to the highest point 2112 of the bottom wall of the cavity is 10mm, and the width W2 of the annular flange 221 corresponding to the lowest point 2111 of the bottom wall of the cavity is 3.8mm.

[0061] Understandably, the width W1 of the annular flange 221 corresponding to the highest point 2112 of the bottom wall of the cavity can also be 8mm, 9mm, 11mm, 12mm, 13mm, or 14mm.

[0062] Understandably, the width W2 of the annular flange 221 corresponding to the lowest point 2111 of the bottom wall of the cavity can be 3.5mm, 3.6mm, 3.7mm, 3.9mm, 4.0mm, 4.1mm, 4.2mm, 4.3mm, or 4.5mm.

[0063] Furthermore, in this embodiment, such as Figures 3 to 5 As shown, the width of the annular flange 221 gradually decreases from the highest point 2112 of the bottom wall of the cavity to the lowest point 2111 of the bottom wall of the cavity, improving the matching between the annular flange 221 of the slow-flow space 4 and the material distribution in the cup 1 formed by the inclined vortex. That is to say, in the circumferential direction, the holding capacity of the slow-flow space 4 is relatively matched with the material distribution in the cup 1, reducing the phenomenon of material being pushed into the cavity 21 and depositing towards the low side area 26 of the cavity. At the same time, the flow rate loss of the material flowing back into the cavity 21 by the annular flange 221 gradually decreases from the high side area 25 of the cavity to the low side 26 of the cavity. In the circumferential direction, the matching between the flow rate of the material after passing through the slow-flow space 4 and the flow rate during material crushing is improved, so that the material has sufficient flow rate after passing through the slow-flow space 4 to smoothly flow back to the vicinity of the crushing blade 5 for crushing, instead of falling into the cavity 21 and depositing towards the low side area 36 of the cavity, thus failing to flow back and contact the crushing blade 5, improving the crushing effect of the material.

[0064] Furthermore, the plane of the bottom wall 211 of the cavity extends and intersects with the annular flange 221. This can effectively reduce the effective crushing volume of the cavity 21 caused by the excessive slope of the bottom wall 211, and reduce the material falling from the high side area 25 of the cavity to the low side area of ​​the cavity 21, which rushes rapidly along the inclined bottom wall of the cavity 21. The probability of this settled material contacting the crushing blade 5 is reduced, thus reducing the crushing effect. It also avoids the problem of overflow caused by the formation of a steeply inclined vortex in the cup 1 due to the excessive slope of the bottom wall 211 of the cavity. At the same time, it can also ensure that the crushing cavity enclosed by the cavity 21 and the cup 1 can form a better inclined vortex and generate better turbulence, thereby improving the crushing effect.

[0065] For the material in the high side zone 25 of the cavity, after passing through the slow flow space 4, some material will not flow directly back to the vicinity of the crushing blade 5, but will fall into the cavity 21 and deposit along the inclined bottom wall 211 of the cavity 21 towards the low side zone 26 of the cavity. Exemplarily, in one specific embodiment, such as... Figure 5 As shown, the bottom wall 211 of the cavity extends upward at an angle to the radial inner side of the annular flange 221, thereby eliminating the height difference between the annular flange 221 of the high side area 25 of the cavity and the bottom wall 211 of the cavity. This prevents the material from experiencing a large sudden change in flow velocity when falling into the cavity 21 and rushing rapidly along the inclined bottom wall 211 of the cavity to the low side area 26 of the cavity. This reduces the probability of the material contacting the crushing blade 5, allowing the material to flow to the low side area 26 of the cavity at a relatively slow speed. This increases the probability that the material will be agitated and pulled back to the vicinity of the crushing blade 5 when flowing under it and be crushed, further improving the crushing effect of the material.

[0066] Preferably, the highest point of the bottom wall 211 of the cavity intersects with the annular flange 221, so that the material in the high side area 25 of the cavity can better maintain its flow velocity after passing through the slow flow space 4 when it flows back into the cavity 21, further alleviating the problem of sudden changes in flow velocity when it flows along the bottom wall 211 of the cavity, making the material distribution in the area around the crushing blade 5 relatively uniform and improving the crushing effect.

[0067] For example, in one specific embodiment, as shown in Figure 6, the plane extending from the bottom wall 211 of the cavity intersects the annular flange 221. The side wall 212 of the cavity corresponding to the high side 25 is inclined towards the inside of the cavity 21, reducing the height difference between the annular flange 221 and the bottom wall 211 of the cavity, thus minimizing the impact on the flow velocity of the material after passing through the slow-flow space 4. Figure 5 The dashed line in the figure represents the extension line that extends obliquely upward from the bottom wall 211 of the cavity and intersects the annular flange 221.

[0068] During material crushing, the material, moving in an inclined vortex, falls into the slow-flow space 4 due to gravity. The annular flange 221 of the slow-flow space 4 not only receives the falling material but also reduces its flow velocity to a certain extent, thus slowing down the flow. This causes some material to rotate at a slower speed, potentially preventing it from flowing back to the crushing blade 5 and causing it to deposit on the annular flange 221. Especially when the material deposits to a certain extent, and the slow-flow space 4 cannot accommodate it due to excessive deposition, some material will be pushed down and deposited in the lower side area 26 of the cavity.

[0069] Furthermore, in this embodiment, such as Figure 5 As shown, the annular flange 221 is inclined downward from the outside to the inside, which can guide the material that falls into the slow flow space 4 and deposits back to the vicinity of the crushing blade 5, thereby improving the crushing effect of the crushing blade on the material.

[0070] Specifically, such as Figure 5 As shown, the annular flange 221 forms a first inclined angle α with the horizontal plane, and the bottom wall 211 of the cavity forms a second inclined angle β with the horizontal plane. The first inclined angle α is smaller than the second inclined angle β. Under the premise of ensuring that the annular flange 221 effectively guides the material back to the vicinity of the crushing blade 5, for materials that cannot flow back to the vicinity of the crushing blade 5 and fall onto the bottom wall 211 of the cavity, the inclination of the annular flange 221 is smaller than the inclination of the bottom wall 211 of the cavity. This prevents the material in the high side area 25 of the cavity from experiencing a large change in flow velocity when falling into the cavity 21. Instead, it allows the material to flow to the low side area 26 of the cavity at a relatively slow speed, increasing the probability that the material will be agitated and pulled back to the vicinity of the crushing blade 5 when flowing under it and thus being crushed, further improving the crushing effect of the material.

[0071] Furthermore, in this embodiment, the blade shaft 51 of the pulverizer 5 is offset from the center of the blade disc 2 and is located close to the lower side area 26 of the cavity, which allows the pulverizer 5 to agitate the material deposition area formed in the lower side area 26 of the cavity, thereby improving the pulverizing effect and making the material pulverized more finely.

[0072] Because material easily deposits in the lower side region 26 of the cavity, in this embodiment, such as Figure 5 As shown, the bottom of the cutter head 2 is provided with a heating element 7. The heating element 7 includes an arc-shaped heating tube 71 and wiring terminals 72 located at both ends of the heating tube 71. The wiring terminals 72 are provided corresponding to the low side area 26 of the cavity. This can avoid the heat source from concentrating on heating the material in the low side area 26 of the cavity, thus preventing the material from sticking to the bottom.

[0073] It is understandable that, such as Figure 7-10As shown, the motor 8 can also be set inside the cup base 3. The motor shaft 811 of the motor 8 is fixedly connected to the blade 51 of the crusher 5. This can replace the method of connecting the motor 8 and the crusher 5 through the upper coupling 9 and the lower coupling 10. This avoids the problem of poor alignment of the upper and lower couplings due to the oblique setting of the blade assembly, thereby improving the reliability of the transmission and reducing noise.

[0074] In this embodiment, such as Figure 7 As shown, the inner wall of the cup body 1 is provided with multiple turbulence ribs 12 extending along the axial direction of the cup body. The height of the top of the multiple turbulence ribs 12 increases in a gradient along the rotation direction of the crushing blade 5. During the rotation of the slurry, the resistance encountered by the slurry gradually increases, which can reduce slurry turbulence, reduce the vibration of the cup body 1 caused by the impact of the liquid flow, and improve the noise reduction effect. At the same time, when the slurry flows down from the highest turbulence rib 12, it can form a height difference of agitation, thereby forming a larger impact, making it easier for the material to reach the crushing area of ​​the crushing blade 5, thereby improving the crushing effect of the material.

[0075] Because the blade disc 2 is set at a certain angle to the horizontal plane, during the grinding process, the liquid in the cup 1 will move in a circular motion around the blade shaft 51. The upper surface of the liquid will also be at a certain angle to the horizontal plane, with the lowest point of the upper surface above the lowest point of the blade disc 2 and the highest point above the highest point of the blade disc 2. After colliding with the corresponding baffles 12 at different liquid levels, the liquid bounces back and falls near the blades of the grinding blade 5, where it is further agitated. By setting baffles 12 of different lengths according to the liquid level, the liquid in the cup 1 can contact the raised positions of the baffles 12 at different locations, promoting a faster return of the liquid to the vicinity of the blades of the grinding blade 5 and improving the grinding effect.

[0076] In this embodiment, such as Figure 7 As shown, the highest baffle 12 is positioned in the lower side region 26 of the cavity. Since the lower side region 26 is the main deposition area for materials, by placing the highest baffle 12 on this side, the height between the top of the highest baffle 12 and the lower side region 26 of the cavity is maximized, which can further enhance the impact force when the liquid flows down, causing the material to contact the blade of the crusher 5, thereby strengthening the material crushing effect.

[0077] like Figure 8-10 As shown, the sidewall of the blade disc 2 unfolds in an involute shape along the rotation direction of the pulverizing blade 5. The distance from the tail end of the pulverizing blade 5 to the sidewall of the blade disc 2 gradually decreases along the rotation direction of the pulverizing blade 5, where dimension A > B > C. With this arrangement, the material, under the action of the blades of the pulverizing blade 5, passes through the continuously shrinking space of the cavity 21 of the blade disc 2, and is subjected to differential speed by the compression of the sidewall and the shearing of the blades. This increases the probability of the material colliding with each other and with the blades, thus improving the fineness of the pulverization. Figure 8The arrow in the image indicates the direction of rotation of the shredder 5.

[0078] like Figure 7 As shown, a stepped section 22 is provided at the high edge of the cutter head 2. The stepped section 22 and the adjacent bottom plane of the cutter head 2 form a rotating zone 23. When the material moves to this point, it is blocked by the stepped section 22. After the collision, the original velocity direction is changed, and the momentum of the material is converted into impulse, increasing the impact energy. At the same time, the material is driven by the blades of the crushing blade 5 to move from the low point to the high point at a relatively high speed. It is then impacted by the rotating zone, further increasing the collision energy, improving the turbulence effect of the slurry, and enhancing the crushing effect of the material. With this setting, the direction and magnitude of the slurry flow velocity in the rotating zone 23 change significantly, increasing the degree of turbulence and impact of the slurry at the bottom of the cutter head 2, and increasing the probability of collision and shearing with the blades, thus improving the turbulence effect and the fineness of the crushing.

[0079] Furthermore, such as Figure 10 As shown, in one embodiment, the edge portion of the cutter disc 2 includes an arcuate portion (i.e., an arcuate transition portion 222) and a flat portion (i.e., the bottom wall 211 of the cavity). The arcuate portion is located in the high point region of the cutter disc 2, and the rest is a flat portion. The flat portion is parallel to the blade, and the arcuate portion forms a certain angle with the blade. When the blade cuts the material, the material is simultaneously subjected to the downward thrust of the blade and the guidance of the arcuate portion, which can cause the material to slide from the arcuate portion 11 to the flat portion, making more contact with the blade and thus improving the crushing effect.

[0080] Furthermore, in this embodiment, such as Figure 10 As shown, in the lower side region 26 of the cavity, the bottom wall 211 of the cavity and the side wall 212 of the cavity form an angle γ, where 180°>γ>90°. Under the shearing action of the blade, the material collides with the side wall 212 of the cavity. Due to the setting of the tilt angle of the side wall 212 of the cavity, the material avoids the blade sweeping area after the collision, and after colliding with the inner side wall of the cup 1, it falls back to the vicinity of the blade. This can avoid the material from repeatedly colliding with the blade in the bottom volume cavity area of ​​the cavity 21, increasing the temperature rise of the motor 81, and reducing the probability of scorching at the bottom. It utilizes the gravitational potential energy conversion of the material falling from a high place to improve the crushing performance while reducing the energy consumption of the motor 81.

[0081] The technical solutions protected by this invention are not limited to the above embodiments. It should be noted that any combination of the technical solutions of any embodiment with one or more other embodiments is within the protection scope of this invention. Although the invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this invention are within the scope of protection claimed by this invention.

Claims

1. A food processing machine, comprising a cup body with openings at the top and bottom, a blade disc with an opening at the lower end of the cup body, a cup base located below the cup body, and a pulverizing blade disposed within the cup body, wherein the bottom wall of the blade disc is recessed to form a cavity, the bottom wall of the cavity is inclined, and the pulverizing blade is perpendicular to the bottom wall of the cavity, characterized in that, The cutter head is provided with a stepped portion, which includes the side wall of the cavity and an annular flange extending from the side wall of the cavity to the cup body. The annular flange and the inner wall of the cup body enclose a slow-flow space that delays the material flow back to the cavity. The width of the annular flange corresponding to the highest point of the bottom wall of the cavity is greater than the width of the annular flange corresponding to the lowest point of the bottom wall of the cavity.

2. The food processing machine as described in claim 1, characterized in that, The width of the annular flange gradually decreases from the highest point of the bottom wall of the cavity toward the lowest point.

3. The food processing machine as described in claim 1, characterized in that, The plane containing the bottom wall of the cavity extends and intersects the annular flange.

4. A food processing machine as described in claim 1, characterized in that, The bottom wall of the cavity extends upward at an angle to the radial inner side of the annular flange.

5. A food processing machine as described in claim 4, characterized in that, The highest point of the bottom wall of the cavity intersects with the annular flange.

6. A food processing machine as described in claim 1, characterized in that, The annular flange is inclined downwards from the outside in.

7. A food processing machine as described in claim 5, characterized in that, The annular flange forms a first inclined angle with the horizontal plane, and the bottom wall of the cavity forms a second inclined angle with the horizontal plane. The first inclined angle is smaller than the second inclined angle.

8. A food processing machine as described in claim 1, characterized in that, The blade axis of the shredder is offset from the center of the blade disc and is located near the lower side of the cavity.

9. A food processing machine as described in claim 1, characterized in that, The bottom of the cutter head is provided with a heating element, which includes an arc-shaped heating tube and terminals at both ends of the heating tube. The terminals are located in the lower side area of ​​the cavity.

10. A food processing machine as described in claim 1, characterized in that, The inner wall of the cup is provided with multiple baffles extending along the axial direction of the cup, and the height of the top of the baffles increases in a gradient along the rotation direction of the crusher.

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