Stirring pulverizing knife, stirring knife assembly and food processor

Abstract

The utility model discloses a kind of stirring and crushing knives, stirring knife assemblies and food processors, and stirring and crushing knife includes installation part and blade, blade is connected with installation part, blade has blade edge side, blade edge side includes straight line section and arc section, the proximal end of straight line section is connected with installation part, the proximal end of arc section is connected with the distal end of straight line section, smooth transition between straight line section and arc section, so that blade edge side extends smoothly.The stirring and crushing knife of the utility model, the efficiency and the effect of crushing are improved, foam is less, and noise is small.

Description

Technical Field

[0001] This utility model relates to the field of food processor technology, specifically to a blending and pulverizing blade, a blending blade assembly, and a food processor. Background Technology

[0002] Food processors, such as blenders, juicers, and soy milk makers, typically include a blending cup and a blending blade inside the cup. The blade blends and grinds the ingredients in the blending chamber to process them. However, these food processors suffer from low grinding efficiency, excessive bubbles and foam, and high noise levels. Utility Model Content

[0003] This application is based on the inventor's discoveries and understanding of the following facts and problems:

[0004] In related technologies, the blade edge of a mixing and pulverizing blade is usually a straight side. When the mixing and pulverizing blade is working, the blade edge has limited effect on mixing and pulverizing food, resulting in low mixing and pulverizing efficiency, poor effect, many bubbles, and loud noise.

[0005] Based on the inventor's above-mentioned findings and understanding, the inventor discovered through research that by making the blade side of the mixing and pulverizing blade include both straight and curved segments, and when the straight-line distance between the far and near ends of the blade side is constant, the blade side is longer. When pulverizing food, it has a greater pulverizing length, which is more conducive to throwing the food outward. The rebound of the food through the inner wall of the cooking chamber forms turbulence, further improving the disturbance effect, thereby improving the mixing and pulverizing effect, reducing bubbles and lowering noise.

[0006] This utility model aims to at least partially solve one of the technical problems in the related art.

[0007] Therefore, embodiments of this utility model propose a stirring and pulverizing blade that improves pulverizing effect, reduces foam, and minimizes noise.

[0008] An embodiment of this utility model also proposes a food processor.

[0009] The mixing and pulverizing blade of this utility model includes a mounting part and a blade. The blade is connected to the mounting part and has a cutting edge side. The cutting edge side includes a straight segment and an arc segment. The proximal end of the straight segment is connected to the mounting part, and the distal end of the straight segment is connected to the proximal end of the arc segment. The straight segment and the arc segment have a smooth transition so that the cutting edge side extends smoothly.

[0010] The mixing and pulverizing blade of this embodiment features a blade side edge that includes both a straight segment and an arc segment. Compared to a blade side edge that is entirely straight, the side edge can be longer, further improving the efficiency and effectiveness of pulverizing food. Furthermore, by positioning the arc segment on the side of the straight segment furthest from the mounting part, and ensuring a smooth transition between the straight and arc segments, the blade side edge is smoother, allowing for smoother cutting and throwing of food, thereby improving mixing and pulverizing effects, reducing air bubbles generated during food mixing, and lowering noise.

[0011] In some embodiments, the length of the straight line segment is L1, and the length of the arc segment is L2, wherein 9.6mm≤L1≤16.6mm, and 17.1mm≤L2≤28.6mm.

[0012] In this embodiment, the mixing and pulverizing blade, by limiting the length of the straight segment to between 9.6 mm and 16.6 mm, is particularly effective when the mixing and pulverizing blade is used in a non-circular cooking cavity, such as a square cooking cavity. The far end of the straight segment can be closer to the middle of the side wall of the cooking cavity, resulting in better pulverization of ingredients near the middle of the side wall. By setting the length of the curved segment to between 17.1 mm and 28.6 mm, when the curved segment moves to the corner of the cooking cavity, it has a greater pulverization length for ingredients at the corner, thereby improving the pulverization efficiency and effect of that part of the ingredients.

[0013] In some embodiments, the ratio of the length of the straight line segment to the length of the arc segment is S1, wherein 0.31 ≤ S1 ≤ 0.56.

[0014] In this embodiment, by setting S1 to be greater than or equal to 0.31, the straight segment of the mixing and pulverizing blade can be ensured to have sufficient length. Especially when the mixing and pulverizing blade is used in a non-circular cooking cavity, the far end of the straight segment is closer to the middle of the side wall of the cooking cavity, resulting in greater pulverization efficiency for ingredients near the middle of the side wall. By setting S1 to be less than or equal to 0.56, the curved segment can be ensured to have sufficient length. When the curved segment moves to the corner of the cooking cavity, it has a greater pulverization length for ingredients at the corner, thereby achieving higher pulverization efficiency and effect for that part of the ingredients.

[0015] In some embodiments, the arc segment includes a first arc segment and a second arc segment. The first arc segment is connected to the straight segment and transitions smoothly. The blade also has a back edge. The second arc segment is directly connected to the back edge. The radius of curvature of the first arc segment is R1, and the radius of curvature of the second arc segment is R2, wherein R1 ≥ 24.8 mm, and 8.5 mm ≤ R2 ≤ 16.7 mm.

[0016] The mixing and pulverizing blade of this embodiment is designed with an arc segment including a first arc segment and a second arc segment whose radius of curvature decreases in the direction away from the mounting part. This allows the blade width to increase and then decrease again. The second arc segment can be used as a transition segment between the blade side and the blade back side, resulting in a smooth transition between the blade side and the blade back side. The blade extension length can be longer, which improves the pulverizing and tossing effect on food and makes the blade less prone to deformation.

[0017] In some embodiments, the ratio of the length of the first arc segment to the length of the blade side is S2, wherein 0.49≤S2≤0.84.

[0018] The mixing and pulverizing blade in this embodiment ensures that the first arc segment has sufficient length, extending the blade length. Furthermore, it also ensures that the blade has sufficient strength.

[0019] In some embodiments, the proximal end of the blade back side is connected to the mounting portion, the distal end of the blade back side is connected to the second arc segment, the blade back side is a straight side, and the included angle between the blade back side and the straight segment is M, wherein 4.5°≤M≤33°.

[0020] The mixing and pulverizing blade in this embodiment reduces the processing cost of the blade and improves its strength by setting the back side of the blade to a straight side. By setting 4.5°≤M≤33°, on the one hand, it can ensure that the near end of the blade has sufficient width, and the connection between the blade and the mounting part is less likely to bend and deform. On the other hand, it can also avoid the maximum width of the blade being too large due to the excessive angle between the two, which would cause excessive noise.

[0021] In some embodiments, the blade is provided with a pressure relief hole.

[0022] In this embodiment, the mixing and pulverizing blade allows water to flow through a pressure relief hole during rotation, balancing the pressure on both sides of the blade and effectively reducing the likelihood of cavitation. The pressure relief hole also cuts and breaks down cavitation bubbles, preventing their accumulation and resulting noise.

[0023] In some embodiments, the outline of the pressure relief hole includes a first outline segment adjacent to and parallel to the side of the blade edge and a second outline segment adjacent to and parallel to the side of the blade back edge. The distance between the first outline segment and the side of the blade edge is a, and the distance between the second outline segment and the side of the blade back edge is b, wherein a > b, 2.4 mm ≤ a ≤ 8.8 mm, and 1.8 mm ≤ b ≤ 8.8 mm.

[0024] In this embodiment, the mixing and pulverizing blade, by setting a to be greater than or equal to 2.4 mm and b to be greater than or equal to 1.8 mm, ensures that the solid part of the blade has sufficient width at any position along its length, thereby possessing sufficient strength and reducing the possibility of deformation and damage during high-speed rotation. By setting a to be less than or equal to 8.8 mm and b to be less than or equal to 8.8 mm, it ensures that the pressure relief hole has a sufficiently large area, resulting in better noise reduction. When the blade rotates at high speed, the edge of the blade experiences greater impact strength than the back edge. By setting a to be greater than b, the structural strength of the blade is ensured, effectively increasing the area of ​​the pressure relief hole to better achieve the noise reduction effect.

[0025] In some embodiments, the ratio of the area of ​​the pressure relief hole to the area of ​​the blade is L5, wherein 0.12 ≤ L5 ≤ 0.65.

[0026] In this embodiment, the mixing and pulverizing blade is designed with L5 less than or equal to 0.65 to ensure that the solid part of the blade has sufficient width and strength, thereby improving its service life. By setting L5 greater than or equal to 0.12, the pressure relief hole is designed to have a sufficiently large area, so that the blade has a better noise reduction effect and improves the smoothness of food flow through the pressure relief hole.

[0027] In some embodiments, there are multiple blades, including a first blade and a second blade, wherein the first blade is inclined toward the upper side of the mounting portion relative to the mounting portion, and the second blade is inclined toward the lower side of the mounting portion relative to the mounting portion.

[0028] In this embodiment, the mixing and pulverizing blade is designed with the first and second blades tilted upwards and downwards relative to the mounting portion, respectively. This creates a height difference between the distal ends of the first and second blades. As the first and second blades rotate with the mounting portion, they can achieve three-dimensional mixing of the food in a larger area along the vertical direction, resulting in higher pulverization efficiency and better effect. Furthermore, by having the first blade with a downward-facing first blade bevel and the second blade with a downward- or upward-facing second blade bevel, the first blade can throw the food downwards via the first blade bevel, and the second blade can throw the food downwards or upwards via the second blade bevel. This effectively increases the disturbance to the food flow, resulting in better pulverization efficiency and effect, fewer bubbles, and lower noise.

[0029] In some embodiments, the first blade is tilted at an angle e relative to the mounting portion toward the upper side of the mounting portion, wherein 15°≤e≤36°.

[0030] In this embodiment, by setting e to be greater than or equal to 15°, the height difference between the proximal and distal ends of the blade side on the first blade is sufficiently large to achieve pulverization of food in a wider area along the height direction. By setting e to be less than or equal to 36°, while maintaining a fixed length of the first blade, the distance between the distal end of the blade side and the inner wall of the cooking cavity is prevented from becoming too large, thus avoiding reduced pulverization efficiency of food near the inner wall of the adjacent cooking cavity.

[0031] In some embodiments, both the first blade and the second blade are single-edged, the first blade has a downward-facing first cutting edge bevel, and the second blade has an upward-facing or downward-facing second cutting edge bevel.

[0032] The mixing and pulverizing blade in this embodiment has a first blade with a downward-facing first blade bevel and a second blade with a downward-facing or upward-facing second blade bevel. The first blade can throw the food downwards through the first blade bevel, and the second blade can throw the food downwards or upwards through the second blade bevel. This effectively increases the disturbance to the flow of the food, resulting in better pulverizing efficiency and effect, fewer bubbles, and lower noise.

[0033] In some embodiments, the second blade is divided into a root portion and a tip portion in a direction away from the mounting portion, the root portion is in contact with the mounting portion, the tip portion is bent upward relative to the root portion, and the included angle between the tip portion and the root portion is an obtuse angle.

[0034] In this embodiment, the mixing and pulverizing blade features a second blade with its tip bent upwards relative to its base. This design ensures a smaller angle between the tip's extension direction and the bottom wall of the cooking chamber, resulting in higher pulverization efficiency for ingredients below it. Furthermore, while maintaining a constant distance between the distal end of the tip and the rotation axis, the bending design of the tip relative to the base further increases the length of the side edge of the second blade, further enhancing the pulverization efficiency.

[0035] In some embodiments, the angle of inclination of the blade root relative to the mounting portion toward the lower side of the mounting portion is c, and the angle of inclination of the blade tip relative to the mounting portion toward the lower side of the mounting portion is d, wherein 18°≤c≤55.5° and 4.5°≤d≤31°.

[0036] In this embodiment, the mixing and pulverizing blade, by setting c to be greater than or equal to 18° and d to be greater than or equal to 4.5°, ensures a sufficiently large height difference between the proximal end of the blade side at the base and the distal end of the blade tip, thereby achieving pulverization of more areas of food in the height direction. By setting c to be less than or equal to 55.5° and d to be less than or equal to 31°, while maintaining a fixed length of the second blade, it avoids an excessively large distance between the distal end of the blade side and the inner wall of the cooking cavity, which would reduce the pulverization efficiency of food on the adjacent inner wall of the cooking cavity.

[0037] In some embodiments, the ratio of the length of the blade root to the length of the blade tip is L4, wherein L4 ≥ 1.45.

[0038] In this embodiment, the mixing and pulverizing blade, by setting L4≥1.45, effectively avoids the average distance between the second blade and the bottom wall of the cooking cavity being too small, resulting in less noise generated by the movement of food between the second blade and the bottom wall of the cooking cavity under the impact of the second blade.

[0039] In some embodiments, the first blade and the second blade are alternately arranged circumferentially along the mounting portion, the first blades are arranged in pairs and the two first blades in each pair are arranged symmetrically with respect to the center of the mounting portion, and the second blades are arranged in pairs and the two second blades in each pair are arranged symmetrically with respect to the center of the mounting portion.

[0040] In this embodiment, the mixing and pulverizing blade has two first blades and two second blades working together to pulverize the food. At the same rotation speed, the food is pulverized by the first blades and the second blades in sequence, thus achieving higher pulverization efficiency.

[0041] In some embodiments, the blade is twisted relative to the mounting portion about the length of the blade, and the twist angle of the blade is f, wherein 0.5°≤f≤25°.

[0042] In this embodiment, the mixing and pulverizing blade, by setting f to be greater than or equal to 0.5°, allows the upper or lower side of the blade to assist in agitating and guiding the food during rotation. This makes the food flow more freely and allows it to be more efficiently pulverized by the side of the blade. By setting f to be less than or equal to 25°, the blade is effectively prevented from deforming or being damaged due to excessive impact from the food during high-speed rotation.

[0043] The stirring blade assembly according to an embodiment of the present invention includes a stirring and pulverizing blade and a blade shaft. The stirring and pulverizing blade can be the stirring and pulverizing blade of the above embodiment, and the mounting part is mounted on the blade shaft.

[0044] In this embodiment, the mixing blade assembly features a blade width that first increases and then decreases along the direction away from the mounting part, resulting in high pulverization efficiency and excellent pulverization effect for food.

[0045] In some embodiments, the stirring blade assembly further includes a rotating shaft to which the blade shaft is detachably assembled.

[0046] The stirring blade assembly of this embodiment is designed to be detachably connected to the blade shaft and the rotating shaft, which facilitates disassembly and assembly, thus making it easy to clean. Furthermore, it is easy to replace the blade shaft or the stirring and pulverizing blade when it is damaged, resulting in low replacement costs.

[0047] The food processor according to the present invention includes the mixing and pulverizing blade or mixing blade assembly described in the above embodiments. Attached Figure Description

[0048] Figure 1 This is a three-dimensional schematic diagram of a stirring and pulverizing blade according to an embodiment of the present invention.

[0049] Figure 2 This is a top view schematic diagram of the stirring and pulverizing blade according to an embodiment of the present invention.

[0050] Figure 3 This is a partially enlarged schematic diagram of the stirring and pulverizing blade according to an embodiment of the present invention.

[0051] Figure 4 This is a side view of a stirring and pulverizing blade according to an embodiment of the present invention.

[0052] Figure 5 This is a side view schematic diagram of the stirring and pulverizing blade according to an embodiment of the present invention.

[0053] Figure 6 This is a bottom view schematic diagram of the stirring and pulverizing blade according to an embodiment of the present invention.

[0054] Figure 7 This is a three-dimensional schematic diagram of a stirring and pulverizing blade mounted on a blade shaft to form a stirring blade assembly according to an embodiment of the present invention.

[0055] Figure 8 This is a bottom view schematic diagram of a mixing and pulverizing blade according to another embodiment of the present invention.

[0056] Figure 9 This is a top view schematic diagram of a stirring and pulverizing blade according to another embodiment of the present invention.

[0057] Figure label:

[0058] 100. Mixing and pulverizing blade; 200. Mixing blade assembly; 1. Mounting part; 101. Blade; 2. First blade; 21. Blade edge side; 211. Straight section; 212. Curved section; 2121. First arc section; 2122. Second arc section; 22. Blade back side; 23. Pressure relief hole; 24. First blade bevel; 3. Second blade; 31. Blade root; 32. Blade tip; 33. Second blade bevel; 4. Blade shaft. Detailed Implementation

[0059] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0060] The following describes the mixing and pulverizing blade according to an embodiment of the present invention, with reference to the accompanying drawings.

[0061] It is understood that the mixing and pulverizing blade of this utility model embodiment is generally also referred to as a mixing blade or a pulverizing blade. In the description of this utility model embodiment, "ingredients" should be interpreted broadly, for example, it is generally also referred to as an ingredient mixture, a mixture of ingredients and water, a mixture, a fluid, a slurry, a liquid, etc. The mixing and pulverizing blade of this utility model embodiment can be used in a food processor, such as a high-speed blender, juicer, soy milk maker, etc., for example, to prepare soy milk, rice paste, corn juice, nut milk, mung bean soup, etc., but is not limited thereto.

[0062] The mixing and pulverizing blade 100 of this utility model embodiment includes a mounting part 1 and a blade 101. The blade 101 is connected to the mounting part 1 and has a cutting edge 21. The cutting edge 21 includes a straight segment 211 and an arc segment 212. The proximal end of the straight segment 211 is connected to the mounting part 1, and the distal end of the straight segment 211 is connected to the proximal end of the arc segment 212. The straight segment 211 and the arc segment 212 have a smooth transition so that the cutting edge extends smoothly. The cutting edge 21 extends smoothly, that is, the cutting edge 21 has no bends. Here, a bend means, for example, that the cutting edge 21 is divided into two straight segments 211 with an included angle less than a predetermined angle, such as 90 degrees, or that a distinct edge is formed at the junction of two adjacent segments of the cutting edge 21 or on the cutting edge 21.

[0063] It should be noted that "far" and "near" are relative terms. For example, "near" means relatively close to the center of the mounting part 1, and "far" means relatively far from the center of the mounting part 1. The near end is closer to the mounting part 1 than the far end.

[0064] The mixing and pulverizing blade 100 of this embodiment features a blade 101 with a blade side 21 comprising a straight segment 211 and an arc segment 212. Compared to a blade side 21 that is entirely straight, the blade side 21 can be longer, further improving the efficiency and effect of pulverizing food. Furthermore, by positioning the arc segment 212 on the side of the straight segment 211 away from the mounting part 1, and ensuring a smooth transition between the straight segment 211 and the arc segment 212, the blade side is smoother, resulting in smoother cutting and throwing of food, thereby improving the mixing and pulverizing effect, reducing air bubbles generated during food mixing, and lowering noise.

[0065] Understandably, the blade side 21 extends smoothly, meaning there are no bends. A bend here refers to, for example, the blade side 21 dividing into two straight segments 211 with an angle less than a predetermined angle, such as 90 degrees, or the junction of two adjacent segments of the blade side 21, or the formation of a distinct angle on the blade side 21. By setting a smooth transition between the straight segments 211 and the curved segments 212, the blade 101 can better cut and throw food outwards, thereby improving the mixing and pulverizing effect and reducing bubbles and noise.

[0066] For example, such as Figure 2 As shown, the blade 101 also has a back edge 22, which is a straight side. By setting an arc segment 212, the width of the blade 101 between the cutting edge side 21 and the back edge side 22 first increases and then decreases in the direction away from the mounting part 1.

[0067] In some embodiments, such as Figure 3 As shown, the length of the straight segment 211 is L1, and the length of the arc segment 212 is L2, where 9.6mm ≤ L1 ≤ 16.6mm and 17.1mm ≤ L2 ≤ 28.6mm. By limiting the length of the straight segment 211 to between 9.6mm and 16.6mm, especially when the mixing blade 100 is used in a non-circular cooking cavity, such as a square cooking cavity, the distal end of the straight segment 211 can be closer to the middle of the side wall of the cooking cavity, resulting in a better pulverizing effect on the food near the middle of the side wall. By setting the length of the arc segment 212 to between 17.1mm and 28.6mm, when the arc segment 212 moves to the corner of the cooking cavity, it has a greater pulverizing length for the food at the corner, thus improving the pulverizing efficiency and effect for that part of the food.

[0068] For example, the length L1 of the straight segment 211 can be 9.6mm, 13mm or 16.6mm, and the length L2 of the arc segment 212 can be 17.1mm, 22mm or 28.6mm.

[0069] In some embodiments, the ratio of the length of the straight segment 211 to the length of the arc segment 212 is S1, where 0.31 ≤ S1 ≤ 0.56. By setting S1 to be greater than or equal to 0.31, it can be ensured that the straight segment 211 has sufficient length, especially when the mixing blade 100 is used in a non-circular cooking cavity, the distal end of the straight segment 211 is closer to the middle of the side wall of the cooking cavity, resulting in greater pulverization efficiency for food near the middle of the side wall. By setting S1 to be less than or equal to 0.56, it can be ensured that the arc segment 212 has sufficient length, and when the arc segment 212 moves to the corner of the cooking cavity, it has a greater pulverization length for food at the corner, thereby achieving higher pulverization efficiency and effect for that part of the food.

[0070] For example, the ratio S1 of the length of the straight line segment 211 to the length of the arc segment 212 can be 0.31, 0.4 or 0.56.

[0071] In some embodiments, such as Figure 3 As shown, the arc segment 212 includes a first arc segment 2121 and a second arc segment 2122. The first arc segment 2121 is connected to the straight segment 211 and transitions smoothly. The blade 101 also has a blade back side 22. The second arc segment 2122 is directly connected to the blade back side 22. The radius of curvature of the first arc segment 2121 is R1, and the radius of curvature of the second arc segment 2122 is R2, where R1≥24.8mm and 8.5mm≤R2≤16.7mm.

[0072] By setting the arc segment 212 to include a first arc segment 2121 and a second arc segment 2122 whose radius of curvature decreases in the direction away from the mounting part 1, the width of the blade 101 increases and then decreases again. The second arc can be used as a transition segment between the blade side 21 and the back side 22, so that the blade side 21 and the back side 22 transition smoothly, and the blade extension length can be longer, thereby improving the crushing and tossing effect on food and making the blade 101 less prone to deformation.

[0073] For example, the radius of curvature R1 of the first arc segment 2121 can be 24.8mm, 26mm or 28.2mm, and the radius of curvature R2 of the second arc segment 2122 can be 8.5mm, 12mm or 16.7mm.

[0074] In some embodiments, the ratio of the length of the first arc segment 2121 to the length of the blade side 21 is S2, where 0.49 ≤ S2 ≤ 0.84. This ensures that the first arc segment 2121 has sufficient length to extend the blade length and that the blade 101 has sufficient strength.

[0075] For example, the ratio S2 of the length of the first arc segment 2121 to the length of the blade side 21 can be 0.49, 0.65 or 0.84.

[0076] In some embodiments, the proximal end of the blade back side 22 is connected to the mounting portion 1, and the distal end of the blade back side 22 is connected to the second arc segment 2122. The blade back side 22 is a straight side, and the included angle between the blade back side 22 and the straight segment 211 is M, wherein 4.5°≤M≤33°. By setting the blade back side 22 to be a straight side, the processing cost of the blade 101 is reduced and the strength of the blade 101 is improved. By setting 4.5°≤M≤33°, on the one hand, it can be ensured that the proximal end of the blade 101 has sufficient width, and the connection between the blade 101 and the mounting portion 1 is less prone to bending and deformation. On the other hand, it can also avoid the maximum width of the blade 101 being too large due to the excessive angle between the two, which would cause excessive noise.

[0077] For example, the angle M between the blade back side 22 and the straight line segment 211 can be 4.5°, 12°, 20°, or 33°. Figure 3 As shown, the width of the blade 101 between the straight segment 211 and the first arc segment 2121 connected to it and the blade back side 22 gradually increases in the direction away from the mounting part 1, while the width of the blade 101 between the remaining first arc segment 2121 and the blade back side 22 gradually decreases in the direction away from the mounting part 1.

[0078] In some embodiments, the blade 101 is provided with a pressure relief hole 23, and the ratio of the area of ​​the pressure relief hole 23 to the area of ​​the blade 101 is L5, wherein 0.12≤L5≤0.65.

[0079] During the rotation of blade 101, water flow can pass through pressure relief hole 23 to balance the pressure on both sides of blade 101, effectively reducing the probability of cavitation. Pressure relief hole 23 can also cut and break down cavitation, preventing cavitation from accumulating and generating excessive noise. By setting L5 to less than or equal to 0.65, the solid part of blade 101 is ensured to have sufficient width and strength, improving its service life. By setting L5 to greater than or equal to 0.12, the pressure relief hole 23 is ensured to have a sufficiently large area, enabling blade 101 to have better noise reduction and improving the smoothness of food flow through pressure relief hole 23.

[0080] For example, such as Figures 1-3 , Figures 6-9 As shown, each blade 101 has a pressure relief hole 23. On a plane orthogonal to the rotation axis of the blade 101, the projected outer contour of the pressure relief hole 23 has the same shape as the projected outer contour of the blade 101. The area of ​​the pressure relief hole 23 is the area of ​​the projected outer contour of the pressure relief hole 23 on the projection plane orthogonal to the rotation axis of the blade 101, and the area of ​​the blade 101 is the area of ​​the projected outer contour of the blade 101 on the projection plane orthogonal to the rotation axis of the blade 101. The ratio L5 of the area of ​​the pressure relief hole 23 to the area of ​​the blade 101 can be 0.12, 0.3, or 0.65.

[0081] In some embodiments, such as Figure 3 As shown, the outline of the pressure relief hole 23 includes a first outline segment adjacent to and parallel to the blade side 21 and a second outline segment adjacent to and parallel to the blade back side 22. The distance between the first outline segment and the blade side 21 is a, and the distance between the second outline segment and the blade back side 22 is b, where a > b, 2.4 mm ≤ a ≤ 8.8 mm, and 1.8 mm ≤ b ≤ 8.8 mm.

[0082] By setting a to be greater than or equal to 2.4 mm and b to be greater than or equal to 1.8 mm, the solid part of the blade 101 can be ensured to have sufficient width at any position along its length, thus possessing sufficient strength and reducing the possibility of deformation and damage during high-speed rotation. By setting a to be less than or equal to 8.8 mm and b to be less than or equal to 8.8 mm, the pressure relief hole 23 can be ensured to have a sufficiently large area, resulting in better noise reduction. When the blade 101 rotates at high speed, the cutting edge side 21 experiences greater impact strength than the back side 22. By setting a to be greater than b, the structural strength of the blade 101 is ensured, effectively increasing the area of ​​the pressure relief hole 23 to achieve better noise reduction.

[0083] For example, the distance d between the first contour line segment and the blade side 21 can be 2.4mm, 4mm, 6mm or 8.8mm, and the distance e between the second contour line segment and the blade side 21 can be 1.8mm, 3.8mm or 8.8mm.

[0084] like Figure 2 and Figure 6 As shown, in some embodiments, there are multiple blades 101, including a first blade 2 and a second blade 3. The first blade 2 is inclined towards the upper side of the mounting part 1 relative to the mounting part 1, and the second blade 3 is inclined towards the lower side of the mounting part 1 relative to the mounting part 1. Both the first blade 2 and the second blade 3 are single-edged. The first blade 2 has a downward-facing first cutting edge 24, and the second blade 3 has a downward-facing second cutting edge 33.

[0085] By setting the first blade 2 and the second blade 3 to be tilted upwards and downwards relative to the mounting part 1, respectively, a certain height difference is created between the distal ends of the first blade 2 and the distal ends of the second blade 3. When the first blade 2 and the second blade 3 rotate with the mounting part 1, they can achieve three-dimensional mixing of the food in a larger area in the vertical direction, resulting in higher food crushing efficiency and better effect. Moreover, by setting the first blade 2 to have a downward-facing first blade bevel 24 and the second blade 3 to have a downward-facing second blade bevel 33, the first blade 2 can throw the food downwards through the first blade bevel 24, and the second blade 3 can throw the food downwards or upwards through the second blade bevel 33, effectively increasing the disturbance to the flow of food, resulting in better crushing efficiency and effect, fewer bubbles, and lower noise.

[0086] like Figure 8 and Figure 9 The first blade 2 has a downward-facing first blade bevel 24, and the second blade 3 has an upward-facing second blade bevel 3. In use, the first blade bevel 24 pushes the food downwards, and the second blade bevel 33 pushes the food upwards, thus allowing the food to be more thoroughly stirred and pulverized within the space between the first blade 2 and the second blade 3, further improving the pulverizing effect, enhancing the pulp quality, and reducing noise.

[0087] For example, such as Figure 1 , Figure 2 , Figures 6-9 As shown, there is a pair of first blades 2 and second blades 3, with the two first blades 2 and the two second blades 3 arranged alternately along the circumference of the mounting portion 1. Figure 1 , Figure 2 , Figures 4-6 As shown, the first blade 2 has a downward-facing first cutting edge bevel 24, and the second blade 3 has a downward-facing second cutting edge bevel 33. Figure 8 and Figure 9 As shown, the first blade 2 has a downward-facing first cutting edge bevel 24, and the second blade 3 has an upward-facing second cutting edge bevel 33.

[0088] In some embodiments, the second blade 3 is divided into a root portion 31 and a tip portion 32 in the direction away from the mounting portion 1. The root portion 31 is connected to the mounting portion 1, and the tip portion 32 is bent upward relative to the root portion 31, with the included angle between the tip portion 32 and the root portion 31 being an obtuse angle.

[0089] By setting the tip 32 of the second blade 3 to bend upward relative to the base 31, the angle between the extension direction of the tip 32 and the bottom wall of the cooking cavity is made smaller, resulting in higher pulverization efficiency of the tip 32 on the food below it. Furthermore, while maintaining a constant distance between the distal end of the tip 32 and the axis of rotation, the bending design of the tip 32 relative to the base 31 further increases the length of the blade side 21 on the second blade 3, further improving the pulverization efficiency.

[0090] For example, such as Figure 1 and Figure 4 As shown, the angle between the extension direction of the blade tip 32 and the horizontal plane is smaller than the angle between the extension direction of the blade root 31 and the horizontal plane, and the distal end of the blade tip 32 is lower than the distal end of the blade root 31.

[0091] In some embodiments, such as Figure 4 As shown, the angle of inclination of the blade root 31 relative to the mounting part 1 towards the lower side of the mounting part 1 is c, and the angle of inclination of the blade tip 32 relative to the mounting part 1 towards the lower side of the mounting part 1 is d, wherein 18°≤c≤55.5° and 4.5°≤d≤31°.

[0092] By setting c to be greater than or equal to 18° and d to be greater than or equal to 4.5°, a sufficiently large height difference is ensured between the proximal end of the blade side 21 on the blade root 31 and the distal end of the blade tip 32, so as to achieve pulverization of more food in the height direction. By setting c to be less than or equal to 55.5° and d to be less than or equal to 31°, while keeping the length of the second blade 3 constant, the distance between the distal end of its blade side 21 and the inner wall of the cooking cavity is avoided from being too large, which would reduce the pulverization efficiency of food on the adjacent inner wall of the cooking cavity.

[0093] In some embodiments, the inclination angle of the first blade 2 relative to the mounting portion 1 towards the upper side of the mounting portion 1 is e, where 15°≤e≤36°. By setting e to be greater than or equal to 15°, the height difference between the proximal and distal ends of the blade edge 21 on the first blade 2 can be ensured to be sufficiently large, thereby achieving pulverization of food in a larger area in the height direction. By setting e to be less than or equal to 36°, while keeping the length of the first blade 2 constant, the distance between the distal end of its blade edge 21 and the inner wall surface of the cooking cavity is prevented from being too large, thus avoiding reduced pulverization efficiency of food near the inner wall surface of the adjacent cooking cavity.

[0094] For example, the angle c of inclination of the blade root 31 relative to the mounting portion 1 towards the lower side of the mounting portion 1 can be 18°, 30°, or 55.5°, and the angle d of inclination of the blade tip 32 relative to the mounting portion 1 towards the lower side of the mounting portion 1 can be 4.5°, 15°, or 31°. The upward inclination angle e of the first blade 2 can be 15°, 22°, or 36°.

[0095] In some embodiments, the ratio of the length of the blade root 31 to the length of the blade tip 32 is L4, where L4 ≥ 1.45. By setting L4 ≥ 1.45, the average distance between the second blade 3 and the bottom wall of the cooking cavity is effectively avoided from being too small, and the noise generated by the movement of food between the second blade 3 and the bottom wall of the cooking cavity under the impact of the second blade 3 is reduced.

[0096] For example, in the projection plane orthogonal to the rotation axis of the blade 101, along the direction away from the rotation axis, the size of the root portion 31 is the length of the root portion 31, and the size of the tip portion 32 is the length of the tip portion 32. The ratio L4 of the two lengths can be 1.45, 1.6, or 2.

[0097] In some embodiments, the first blade 2 and the second blade 3 are alternately arranged circumferentially along the mounting portion 1. The first blades 2 are arranged in pairs, and the two first blades 2 in each pair are arranged symmetrically with respect to the center of the mounting portion 1. The second blades 3 are also arranged in pairs, and the two second blades 3 in each pair are arranged symmetrically with respect to the center of the mounting portion 1. The two first blades 2 and the two second blades 3 work together to pulverize the food. At the same rotation speed, the food is pulverized sequentially by the first blades 2 and the second blades 3, resulting in higher pulverization efficiency.

[0098] For example, such as Figure 1 , Figure 2 , Figures 6-9 As shown, there is a pair of first blades 2 and second blades 3, with two first blades 2 and two second blades 3 arranged alternately along the circumference of the mounting portion 1. The embodiments of the present invention are not limited thereto, and the number of first blades 2 and second blades 3 is not limited thereto. An appropriate number of first blades 2 and second blades 3 can be provided as needed. Preferably, the number of first blades 2 and second blades 3 is the same and they are arranged alternately along the circumference of the mounting portion 1. Figure 2 As shown, there is a second blade 3 between two adjacent first blades 2, and a first blade 2 between two connected second blades 3. Optionally, two first blades 2 can be grouped together, and two second blades 3 can be grouped together, with one group of first blades 2 and one group of second blades 3 arranged alternately.

[0099] In some embodiments, the blade 101 is twisted relative to the mounting portion 1 about the length direction of the blade 101, and the twist angle of the blade 101 is f, wherein 0.5°≤f≤25°.

[0100] By setting f to be greater than or equal to 0.5°, the blade 101 can assist in agitating and guiding the food through its upper or lower side during rotation, making the food flow more freely and thus more efficiently pulverized by the blade edge 21 of the blade 101. By setting f to be less than or equal to 25°, the blade 101 is effectively prevented from being deformed or damaged due to excessive impact from the food during high-speed rotation.

[0101] For example, the torsion angle f of blade 101 can be 0.5°, 5°, 15°, or 25°. The first blade 2 and the second blade 3 can both be torsion in the same direction. Optionally, the first blade 2 can be torsion while the second blade 3 is not torsion, or the first blade 2 can be not torsion while the second blade 3 is torsion.

[0102] like Figure 7 As shown, the stirring blade assembly 200 of this utility model embodiment includes a stirring and pulverizing blade 100 and a blade shaft 4. The stirring and pulverizing blade 100 can be the stirring and pulverizing blade 100 of the above embodiment, and the mounting part 1 is mounted on the blade shaft 4.

[0103] The mixing blade assembly 200 of this embodiment has a high grinding efficiency and good grinding effect because the width of the blade 101 in the mixing and grinding blade 100 first increases and then decreases in the direction away from the mounting part 1.

[0104] In some embodiments, the mixing blade assembly 200 further includes a rotating shaft, and the blade shaft 4 is detachably assembled to the rotating shaft. The mixing and pulverizing blade 100 is connected to the rotating shaft via the blade shaft 4, and the rotating shaft drives the mixing and pulverizing blade 100 to rotate to pulverize food. By setting the blade shaft 4 to be detachably connected to the rotating shaft, it is easy to disassemble and assemble, thereby facilitating cleaning, and it is also easy to replace the blade shaft 4 or the mixing and pulverizing blade when damaged.

[0105] For example, the rotating shaft is rotatably mounted at the bottom of the blending cup, and the blade shaft 4 can be plugged into the rotating shaft, or the blade shaft 4 can be spirally engaged with the rotating shaft, etc. In a specific embodiment, the rotating shaft may be provided with a drive section, which includes a plurality of edges extending in the vertical direction and deflecting circumferentially, and the deflection direction of the plurality of edges from top to bottom is opposite to the rotation direction of the blending blade assembly 200. The blade shaft 4 is provided with a drive hole that matches the drive section, and the drive hole includes a plurality of edges extending vertically in the vertical direction. The blade shaft 4 and the rotating shaft are detachably connected through the cooperation of the drive hole and the drive section.

[0106] In some embodiments, the shaft may be directly connected to the motor; in other embodiments, the shaft may be connected to the motor via a coupling.

[0107] The food processor of this utility model embodiment includes the mixing and pulverizing blade 100 or the mixing blade assembly 200 of the above embodiment.

[0108] The food processor of this utility model has a mixing and pulverizing blade 100 that is suitable for placement or installation in the food processing chamber of the food processing cup, especially in a non-circular food processing chamber, which can further improve the mixing and pulverizing effect and reduce noise.

[0109] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0110] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0111] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0112] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0113] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0114] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A mixing and pulverizing blade (100), characterized in that, include: Installation section (1); A blade (101) is connected to the mounting part (1). The blade (101) has a cutting edge side (21). The cutting edge side (21) includes a straight segment (211) and an arc segment (212). The proximal end of the straight segment (211) is connected to the mounting part (1), and the distal end of the straight segment (211) is connected to the proximal end of the arc segment (212). The straight segment (211) and the arc segment (212) have a smooth transition so that the cutting edge side (21) extends smoothly.

2. The mixing and pulverizing blade (100) according to claim 1, characterized in that, The length of the straight segment (211) is L1, and the length of the arc segment (212) is L2, wherein 9.6mm≤L1≤16.6mm and 17.1mm≤L2≤28.6mm.

3. The stirring and pulverizing blade (100) according to claim 1, characterized in that, The ratio of the length of the straight line segment (211) to the length of the arc segment (212) is S1, where 0.31≤S1≤0.

56.

4. The stirring and pulverizing blade (100) according to claim 1, characterized in that, The arc segment (212) includes a first arc segment (2121) and a second arc segment (2122). The first arc segment (2121) is connected to the straight segment (211) and smoothly transitions. The blade (101) also has a back edge (22). The second arc segment (2122) is directly connected to the back edge (22). The radius of curvature of the first arc segment (2121) is R1, and the radius of curvature of the second arc segment (2122) is R2, wherein R1≥24.8mm, 8.5mm≤R2≤16.7mm; And / or, the ratio of the length of the first arc segment (2121) to the length of the blade side (21) is S2, where 0.49≤S2≤0.

84.

5. The stirring and pulverizing blade (100) according to claim 4, characterized in that, The proximal end of the blade back side (22) is connected to the mounting part (1), and the distal end of the blade back side (22) is connected to the second arc segment (2122). The blade back side (22) is a straight side, and the included angle between the blade back side (22) and the straight segment (211) is M, wherein 4.5°≤M≤33°.

6. The stirring and pulverizing blade (100) according to any one of claims 1-5, characterized in that, The blade (101) is provided with a pressure relief hole (23).

7. The stirring and pulverizing blade (100) according to claim 6, characterized in that, The blade (101) also has a back edge (22), and the outline of the pressure relief hole (23) includes a first outline segment adjacent to and parallel to the blade edge side (21) and a second outline segment adjacent to and parallel to the back edge side (22). The distance between the first outline segment and the blade edge side (21) is a, and the distance between the second outline segment and the back edge side (22) is b, where a > b, 2.4 mm ≤ a ≤ 8.8 mm, and 1.8 mm ≤ b ≤ 8.8 mm.

8. The stirring and pulverizing blade (100) according to claim 6, characterized in that, The ratio of the area of ​​the pressure relief hole (23) to the area of ​​the blade (101) is L5, where 0.12≤L5≤0.

65.

9. The mixing and pulverizing blade (100) according to any one of claims 1-5, characterized in that, There are multiple blades (101), and the multiple blades (101) include a first blade (2) and a second blade (3). The first blade (2) is inclined towards the upper side of the mounting part (1) relative to the mounting part (1), and the second blade (3) is inclined towards the lower side of the mounting part (1) relative to the mounting part (1).

10. The stirring and pulverizing blade (100) according to claim 9, characterized in that, The first blade (2) has an inclination angle e relative to the mounting part (1) toward the upper side of the mounting part (1), where 15°≤e≤36°; And / or, both the first blade (2) and the second blade (3) are single-edged, the first blade (2) has a downward-facing first cutting edge (24), and the second blade (3) has an upward-facing or downward-facing second cutting edge (33).

11. The mixing and pulverizing blade (100) according to claim 9, characterized in that, The second blade (3) is divided into a root portion (31) and a tip portion (32) in a direction away from the mounting portion (1). The root portion (31) is connected to the mounting portion (1), and the tip portion (32) is bent upward relative to the root portion (31) and the included angle between the tip portion (32) and the root portion (31) is an obtuse angle.

12. The stirring and pulverizing blade (100) according to claim 11, characterized in that, The angle of inclination of the root portion (31) relative to the mounting portion (1) towards the lower side of the mounting portion (1) is c, and the angle of inclination of the tip portion (32) relative to the mounting portion (1) towards the lower side of the mounting portion (1) is d, wherein 18°≤c≤55.5° and 4.5°≤d≤31°.

13. The mixing and pulverizing blade (100) according to claim 11, characterized in that, The ratio of the length of the root portion (31) to the length of the tip portion (32) is L4, where L4 ≥ 1.

45.

14. The stirring and pulverizing blade (100) according to claim 9, characterized in that, The first blade (2) and the second blade (3) are alternately arranged along the circumference of the mounting part (1). The first blades (2) are arranged in pairs and the two first blades (2) in each pair are arranged symmetrically with respect to the center of the mounting part (1). The second blades (3) are arranged in pairs and the two second blades (3) in each pair are arranged symmetrically with respect to the center of the mounting part (1).

15. The mixing and pulverizing blade (100) according to any one of claims 1-5, characterized in that, The blade (101) is twisted relative to the mounting part (1) about the length direction of the blade (101), and the twist angle of the blade (101) is f, where 0.5°≤f≤25°.

16. A stirring blade assembly (200), characterized in that, It includes a stirring and pulverizing blade (100) and a blade shaft (4), wherein the stirring and pulverizing blade (100) is the stirring and pulverizing blade (100) according to any one of claims 1-15, and the mounting part (1) is mounted on the blade shaft (4).

17. The stirring blade assembly (200) according to claim 16, characterized in that, The stirring blade assembly (200) also includes a rotating shaft, to which the blade shaft (4) is detachably assembled.

18. A food processor, characterized in that, Includes the mixing and pulverizing blade (100) according to any one of claims 1-15 or the mixing blade assembly (200) according to claim 16 or 17.

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