Stirring knife and food processor

Abstract

The utility model relates to a stirring knife and a food processor. The stirring cutter comprises a cutter shaft, and an upper blade, a middle blade and a lower blade which are connected to the cutter shaft. The upper blade, the middle blade and the lower blade are sequentially arranged from top to bottom in the axial direction of the cutter shaft, the middle blade is a plane blade, the upper blade is bent upwards, the lower blade is bent downwards, and the distance between the blade point of the middle blade and the axis of the cutter shaft is larger than that between the blade point of the upper blade and the axis of the cutter shaft. And the distance between the tip of the middle blade and the axis of the cutter shaft is greater than that between the tip of the lower blade and the axis of the cutter shaft. According to the scheme, upward impact force of food materials and noise can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of small household appliances, in particular to a stirring blade and a food processor. BACKGROUND

[0002] Some stirring blades include two layers of blades, the lower blade is a flat blade, and the upper blade is a bent blade. When the lower blade rotates in a circular manner, it generates upward lift, which increases the upward impact force of the food material and also increases the noise. SUMMARY

[0003] The present application provides a stirring blade and a food processor, which can reduce the upward impact force of the food material and reduce the noise.

[0004] A stirring blade comprises:

[0005] a blade shaft;

[0006] an upper blade, an intermediate blade and a lower blade connected to the blade shaft, the upper blade, the intermediate blade and the lower blade are arranged in sequence from top to bottom along the axial direction of the blade shaft, the intermediate blade is a flat blade, the upper blade is bent upward, the lower blade is bent downward, the distance between the blade tip of the intermediate blade and the axis of the blade shaft is greater than the distance between the blade tip of the upper blade and the axis of the blade shaft, and the distance between the blade tip of the intermediate blade and the axis of the blade shaft is greater than the distance between the blade tip of the lower blade and the axis of the blade shaft.

[0007] The stirring blade provided by the present application can disturb the food material below the intermediate blade during the stirring process of the food material, so that the food material forms a vortex below the intermediate blade. In this way, the upward impact force of the food material when the intermediate blade rotates in a circular manner can be reduced, and the noise can be reduced. The distance between the blade tip of the intermediate blade and the axis of the blade shaft is greater than the distance between the blade tip of the upper blade and the axis of the blade shaft, and also greater than the distance between the blade tip of the lower blade and the axis of the blade shaft. In this way, the size of the blade of the intermediate blade is larger, which can be used to cut the food material, and the upper blade and the lower blade can be used to balance the vortex generated by the intermediate blade and reduce the impact force of the food material.

[0008] Optionally, the upper blade comprises upwardly bent upper blade leaves, one of which is a first upper blade leaf, and the lower blade comprises downwardly bent lower blade leaves, one of which is a first lower blade leaf. In the orthographic projection along the axial direction of the blade shaft, the included angle between the line connecting the blade tip of the first upper blade leaf and the axis of the blade shaft and the line connecting the blade tip of the first lower blade leaf and the axis of the blade shaft is θ4, and 0°≤θ4≤90°. In this way, the first upper blade leaf and the first lower blade leaf can be approximately opposite or slightly staggered in the circumferential direction of the blade shaft. In this way, the first upper blade leaf and the first lower blade leaf can be relatively close on the upper and lower sides of the intermediate blade, which is more conducive to balancing the upward lift when the intermediate blade rotates by the disturbance of the first upper blade leaf and the first lower blade leaf, so as to reduce the impact of the food material and further reduce the noise.

[0009] Optionally, the upper blade includes upwardly bent upper blade leaves, the lower blade includes downwardly bent lower blade leaves, and the blade roots of at least one of the upper blade leaves and the blade roots of the lower blade leaves are axially opposite along the blade shaft. In this way, the blade leaves of the upper blade and the blade leaves of the lower blade can be first ensured to be in an upper-lower opposite position at both sides of the middle blade, and even if the blade leaves of the upper blade and the blade leaves of the lower blade are bent and formed later, the blade leaves of the upper blade and the blade leaves of the lower blade can still be ensured to be close to each other in the circumferential direction of the blade shaft, thereby better balancing the upward lift when the middle blade rotates.

[0010] Optionally, the middle blade includes a planar middle blade leaf, and the blade leaves of the upper blade and the middle blade leaf are circumferentially spaced apart by an angle θ 11 , 0°≤θ 11 ≤120°. The blade leaves of the upper blade and the middle blade leaf can be axially opposite, which makes the blade leaves of each blade closer to each other and the beating more concentrated. The blade leaves of the upper blade and the middle blade leaf can also be circumferentially staggered to achieve dispersed beating.

[0011] Optionally, the middle blade includes a planar middle blade leaf, and the blade leaves of the lower blade and the middle blade leaf are circumferentially spaced apart by an angle θ 12 , 0°≤θ 12 ≤120°. The blade leaves of the lower blade and the middle blade leaf can be axially opposite, which makes the blade leaves of each blade closer to each other and the beating more concentrated. The blade leaves of the lower blade and the middle blade leaf can also be circumferentially staggered to achieve dispersed beating.

[0012] Optionally, the blade leaves of the upper blade are upwardly bent by an angle θ2, 30°≤θ2≤90°. The bending angle θ2 can increase the turbulence space and balance the lift of the upper blade above the middle blade, so that the food material is beaten more evenly.

[0013] Optionally, the blade leaves of the lower blade are downwardly bent by an angle θ3, 0°<θ3≤60°. The bending angle θ3 can increase the turbulence space and balance the lift of the lower blade below the middle blade, and also avoid the occurrence of paste bottom.

[0014] Optionally, the distance between the blade tip of at least one blade leaf of the upper blade and the axis of the blade shaft is a first distance, the distance between the blade tip of at least one blade leaf of the middle blade and the axis of the blade shaft is a second distance, and the distance between the blade tip of at least one blade leaf of the lower blade and the axis of the blade shaft is a third distance, the third distance being greater than the first distance and smaller than the second distance. In this way, during the circumferential movement of the stirring knife, each blade can form a vortex of different diameters for the food material, which is beneficial to the upward and downward flow of the food material and makes the beating more delicate.

[0015] Optionally, the distance between the upper blade and the middle blade along the axial direction of the blade shaft is H 21 , 0≤H 21 ≤20mm. The larger the interval distance H 21 , the larger the size of the blade shaft of the stirring blade, and the better the turbulence effect.

[0016] Optionally, the distance between the lower blade and the middle blade along the axial direction of the blade shaft is H 22 , 0≤H 22 ≤20mm. The larger the interval distance H 22 , the larger the size of the blade shaft of the stirring blade 22, and the better the turbulence effect.

[0017] Optionally, the upper blade is provided with three blade leaves, which are uniformly distributed along the circumferential direction of the blade shaft; and / or

[0018] the lower blade is provided with three blade leaves, which are uniformly distributed along the circumferential direction of the blade shaft; and / or

[0019] the middle blade is provided with three blade leaves, which are uniformly distributed along the circumferential direction of the blade shaft.

[0020] In this way, a nine-blade stirring blade is formed, and the number of blade leaves of each blade is moderate, so that the food material is more delicate after being stirred.

[0021] A food processor, comprising:

[0022] a main machine;

[0023] a cup assembly comprising a cup body and a stirring blade as described in any one of the above embodiments, the stirring blade being rotatably installed in the cup body.

[0024] Optionally, the cup body comprises a cup bottom at the bottommost part, and the axial distance between the blade tip of the lower blade of the stirring blade and the cup bottom is H, 3mm≤H≤25mm, so that the stirring blade can avoid contacting the cup bottom, and in addition, the food material at the cup bottom can be subjected to turbulence to prevent the occurrence of bottom paste; and / or

[0025] the maximum outer diameter of the stirring blade is set to be 0.4-0.9 times the inner diameter of the cup body, which takes into account both the delicacy of the food material after being stirred and the reduction of noise. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic view of a food processor according to an exemplary embodiment of the present application;

[0027] Figure 2 is a cross-sectional view of a cup assembly according to an exemplary embodiment of the present application; Figure 1

[0028] Figure 3 is a front view of a stirring blade according to an exemplary embodiment of the present application; ​

[0029] Figure 4 is a plan view of the stirring knife;

[0030] Figure 5 is a schematic view of the stirring knife from another perspective;

[0031] Figure 6 is an analysis diagram of the impact force of the blade of the upper knife blade, the blade of the middle knife blade and the blade of the lower knife blade on the food material;

[0032] Figure 7 is a schematic view of the stirring knife from another perspective;

[0033] Figure 8 is a schematic view of the stirring knife in a semi-finished state, wherein the upper knife blade and the lower knife blade are both in a flat state without being bent;

[0034] Figure 9 is a schematic view of the stirring knife from another perspective;

[0035] Figure 10 is a front view of another embodiment of the stirring knife;

[0036] Figure 11 is a plan view of the cup assembly. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments (or, the implementation manners) of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated.

[0038] If the application embodiments involve directional indications or positional relationships (such as up, down, left, right, front, back, inner, outer, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings); if the certain posture changes, the directional indication or positional relationship also changes accordingly. In addition, the terms “first”, “second”, etc. in the application embodiments are only used for convenience of description, and cannot be understood as indicating or implying relative importance.

[0039] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic view of the food processor 100 according to an exemplary embodiment of the present application. Figure 2 is a sectional view of the cup assembly 20.

[0040] The application provides a food processor 100, which comprises a main machine 10 and a cup assembly 20, the cup assembly 20 is mounted on the main machine 10, including but not limited to detachable mounting, the main machine 10 can be provided as a base type main machine, and the cup assembly 20 is mounted on the top of the main machine 10.

[0041] The cup assembly 20 comprises a cup body 21 and a stirring blade 22, the cup body 21 is provided with a cup cavity 210, and the stirring blade 22 is rotatably mounted on the cup body 21, the blade of the stirring blade 22 is located in the cup cavity 210 and used for stirring and crushing food materials in the cup body 21.

[0042] Please refer to Figure 3 and Figure 4 , Figure 3 It is a front view of the stirring blade 22. Figure 4 It is a top view of the stirring blade 22.

[0043] The stirring blade 22 comprises a blade shaft 220 and upper, middle and lower blades 221, 222 and 223 connected to the blade shaft 220, the upper, middle and lower blades 221, 222 and 223 are arranged in sequence from top to bottom along the axial direction of the blade shaft, the middle blade 222 is a plane blade, the upper blade 221 is upwardly bent, and the lower blade 223 is downwardly bent. During the stirring of the food materials, the lower blade 223 disturbs the food materials below the middle blade 222, so that the food materials form vortexes below the middle blade 222, thereby reducing the impact force of the food materials upwardly when the middle blade 222 moves in a circle and reducing the noise. The distance between the blade tip A1 of the middle blade 222 and the center O of the blade shaft is greater than the distance between the blade tip A2 of the upper blade 221 and the center O of the blade shaft, and the distance between the blade tip A1 of the middle blade 222 and the center O of the blade shaft is also greater than the distance between the blade tip A3 of the lower blade 223 and the center O of the blade shaft. In this way, the blade size of the middle blade 222 is relatively large and can be used for cutting the food materials, and the upper blade 221 and the lower blade 223 can be used for balancing the vortexes generated by the middle blade 222 and reducing the impact force of the food materials.

[0044] In an embodiment, the distance between the blade tip of at least one blade leaf of the upper blade 221 and the center O of the blade shaft is a first distance φ1 / 2, the distance between the blade tip of at least one blade leaf of the middle blade 222 and the center O of the blade shaft is a second distance φ2 / 2, and the distance between the blade tip of at least one blade leaf of the lower blade 223 and the center O of the blade shaft is a third distance φ3 / 2, the third distance φ3 / 2 is greater than the first distance φ1 / 2 and smaller than the second distance φ2 / 2. In this way, when the stirring blade 22 moves in a circle, each blade can make the food materials form vortexes with different diameters, which is beneficial to the up-and-down flow of the food materials and makes the stirring more delicate.

[0045] In Figure 4In the shown embodiment, the distance between the tip A2 of each blade of the upper blade 221 and the axis O of the blade shaft is equal, and is a first distance φ1 / 2. The distance between the tip A1 of each blade of the middle blade 222 and the axis O of the blade shaft is equal, and is a second distance φ2 / 2. The distance between the tip A3 of each blade of the lower blade 223 and the axis O of the blade shaft is equal, and is a third distance φ3 / 2.

[0046] In Figure 4 In the shown embodiment, the upper blade 221 includes three upwardly bent upper blades, which are evenly distributed along the circumference of the blade shaft. The lower blade 223 includes three downwardly bent lower blades, which are evenly distributed along the circumference of the blade shaft. The middle blade includes three planar middle blades, which are evenly distributed along the circumference of the blade shaft, thus forming a nine-blade knife. The number of blades of each blade is moderate, and the food materials are more delicate after being stirred. Of course, in other examples, the number of blades of each blade can be different, and is set according to actual needs.

[0047] In Figure 4 In the shown embodiment, the three upper blades of the upper blade 221 are symmetrical about the axis O of the blade shaft, and the diameter of the circle passing through the tips of the three upper blades is φ1. The three blades of the middle blade 222 are symmetrical about the axis O of the blade shaft, and the diameter of the circle passing through the tips of the three blades is φ2. The three lower blades of the lower blade 223 are symmetrical about the axis O of the blade shaft, and the diameter of the circle passing through the tips of the three lower blades is φ3.

[0048] Please refer to Figure 5 , Figure 5 Another perspective view of the stirring knife 22.

[0049] In one embodiment, the upper blade 221 includes an upper blade 2210, one of which is a first upper blade 2210a. The lower blade 223 includes a downwardly bent lower blade 2230, one of which is a first lower blade 2230a. In the orthographic projection along the axis of the blade shaft, the angle between the line L1 connecting the axis O of the blade shaft 220 and the tip A2 of the first upper blade 2210a and the line connecting the axis O of the blade shaft 220 and the tip A3 of the first lower blade 2230a is θ4, and 0°≤θ4≤90°. That is, the first upper blade 2210a and the first lower blade 2230a can be approximately opposite or slightly staggered in the circumferential direction of the blade shaft, so that the first upper blade 2210a and the first lower blade 2230a are relatively close on the upper and lower sides of the middle blade 222, which is more conducive to balancing the upward lift of the middle blade 222 during rotation by the first upper blade 2210a and the first lower blade 2230a, so as to reduce the impact of the food materials and further reduce the noise.

[0050] In an alternative embodiment, the included angle θ4 can be 0°, 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90°, but not limited to the above. When θ4 is 0°, the first upper blade 2210a and the first lower blade 2230a are substantially opposite along the axial direction of the cutter shaft, which makes the vortex area generated by the first upper blade 2210a and the first lower blade 2230a close to each other, so that the upward lift of the intermediate blade 222 during rotation can be better balanced.

[0051] In Figure 5 In the embodiment shown, three upper blades 2210 are provided, and three lower blades 2230 are provided. The included angle between the line connecting the tip A2 of each upper blade 2210 and the cutter shaft center O and the line connecting the tip A3 of the nearest lower blade 2230 and the cutter shaft center O is greater than or equal to 0° and less than or equal to 90°.

[0052] Please continue to refer to Figure 3 In an embodiment, the blade of the upper blade 221 is bent upward at a bending angle θ2, and 30°≤θ2≤90°. Specifically, the bending angle θ2 can be 30°, 40°, 50°, 60°, 70°, 80°, 90°, but not limited to the above. The bending angle θ2 can increase the turbulence space of the upper blade 221 above the intermediate blade 222 and balance the lift, so that the food material is stirred more uniformly. In an alternative embodiment, the bending angle θ2 can be set to 60°.

[0053] In an embodiment, the blade of the lower blade 223 is bent downward at a bending angle θ3, and 0°<θ3≤60°. Specifically, the bending angle θ3 can be 0°, 10°, 20°, 30°, 40°, 50°, 60°, but not limited to the above. The bending angle θ3 can increase the turbulence space of the lower blade 223 below the intermediate blade 222 and balance the lift, and can also avoid the occurrence of bottom paste. In an alternative embodiment, the bending angle θ3 can be set to 30°.

[0054] Please refer to Figure 6 , Figure 6 The analysis diagram of the impact force of the blade of the upper blade, the blade of the intermediate blade, and the blade of the lower blade on the food material.

[0055] The impact force of the blade of the intermediate blade 222 on the food material is F, the impact force of the blade of the upper blade 221 on the food material is F1=F*sinθ2, and the impact force of the blade of the lower blade 223 on the food material is F2=F*sinθ3. The ideal situation of the impact force of the whole stirring blade 22 on the food material is F+F1=F2. Therefore, by setting the bending angle θ2 of the upper blade 221 and the bending angle θ3 of the lower blade 223, the impact force of the stirring blade 22 on the food material in the axial direction of the blade shaft can be reduced, and the stress of the motor in the axial direction of the blade shaft can also be reduced, which is beneficial to noise reduction.

[0056] Please refer to Figure 7 and Figure 8 , Figure 7 is a schematic view of the stirring blade 22 from another perspective. Figure 8 is a schematic view of the stirring blade 22 in a semi-finished state, in which the upper blade and the lower blade are in a flat state before being bent.

[0057] In an embodiment, the upper blade 221 comprises an upper blade 2210 bent upward, and the lower blade 223 comprises a lower blade 2230 bent downward. The blade roots of at least one of the upper blade 2210 and the lower blade 2230 are opposite in the axial direction of the blade shaft. That is, the upper blade 2210 and the lower blade 2230 are opposite on the upper side and the lower side of the intermediate blade 222 before being bent, which makes the distance between the upper blade 2210 and the lower blade 2230 after being bent small, so as to ensure that the upper blade 2210 and the lower blade 2230 are close to each other in the circumferential direction of the blade shaft, and the upward lift of the intermediate blade 222 during rotation can be better balanced. Of course, in other embodiments, the positions where the upper blade 221 and the lower blade 223 are formed with blades can also be circumferentially staggered along the blade shaft. The smaller the stagger angle, the better the balancing effect of the upward lift of the intermediate blade 222.

[0058] Please refer to Figure 9 , Figure 9 is a schematic view of the stirring blade 22 from another perspective.

[0059] In an embodiment, the intermediate blade 222 comprises a planar intermediate blade 2220, and the circumferential interval angle between the blade of the upper blade 221 and the intermediate blade 2220 is θ 11 , 0°≤θ 11 ≤120°. That is, the blade of the upper blade 221 and the intermediate blade 2220 can be axially opposite, which makes the blades of the blades closer to each other, and the whipping is more concentrated. The blade of the upper blade 221 and the intermediate blade 2220 can also be circumferentially staggered to achieve dispersed whipping. In a specific embodiment, the interval angle θ 11may be set to 0°, 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, but not limited to the above. In an alternative embodiment, the interval angle θ 11 may be set to 60°.

[0060] In an embodiment, the interval angle θ 12 between the blade of the lower blade 223 and the middle blade 2220 in the circumferential direction of the blade shaft is θ 12 , 0°≤θ 12 ≤120°. That is, the blade of the lower blade 223 and the middle blade 2220 can be axially opposite, which makes the blades of each blade closer to each other, which makes the whipping more concentrated. The blade of the lower blade 223 and the middle blade 2220 can also be circumferentially staggered to achieve decentralized whipping. In a specific embodiment, the interval angle θ 12 may be set to 0°, 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, but not limited to the above. In an alternative embodiment, the interval angle θ 11 may be set to 60°.

[0061] It should be noted that the interval angle θ 11 is the angle between the line connecting the blade shaft center O and the blade tip of the middle blade 2220 and the line connecting the blade shaft center O and the blade tip of the upper blade. The interval angle θ 12 is the angle between the line connecting the blade shaft center O and the blade tip of the middle blade 2220 and the line connecting the blade shaft center O and the blade tip of the lower blade.

[0062] Please refer to Figure 10 , Figure 10 for another embodiment of the stirring blade 22.

[0063] In an embodiment, the axial interval distance H 21 between the upper blade 221 and the middle blade 222 along the blade shaft is H 21 , 0≤H 21 ≤20mm. In a specific embodiment, the axial interval distance H 21 may be 0mm, 5mm, 10mm, 15mm, 20mm. The larger the interval distance H 22 , the larger the size of the blade shaft of the stirring blade 22, and the better the turbulence effect.

[0064] In an embodiment, the axial interval distance H 22 between the lower blade and the middle blade along the blade shaft is H 22 , 0≤H 21Can be 0mm, 5mm, 10mm, 15mm, 20mm. Interval distance H 22 The greater the size of the blade shaft of the stirring blade 22, the better the turbulence effect.

[0065] Please refer to Figure 2 In an embodiment, the cup body 21 further comprises a bottom cup 211 at the bottommost part, and the axial distance between the tip of the lower blade 223 of the stirring blade and the bottom cup 211 is H, 3mm≤H≤25mm. This distance can avoid the stirring blade 22 from touching the bottom cup 211, and in addition, can also disturb the food material at the bottom cup 211 to prevent the occurrence of bottom paste. In an alternative embodiment, the axial distance H can be 3mm, 6mm, 8mm, 10mm, 12mm, 15mm, 18mm, 20mm, 22mm, 25mm, but is not limited thereto. For example, the axial distance H can be specifically set to 5mm.

[0066] Please refer to Figure 11 , Figure 11 is a top view of the cup assembly 20.

[0067] In an embodiment, the maximum outer diameter of the stirring blade 22 is set to 0.4-0.9 times the inner diameter φ of the cup body 21. In this embodiment, the maximum outer diameter of the stirring blade 22 is the maximum outer diameter φ3 of the middle blade 222. The size of the stirring blade 22 is small, the noise is small, but the beating fineness is slightly poor, and this scheme takes into account both the fineness of the food material after beating and the reduction of noise.

[0068] It should be further pointed out that the stirring blade 22 in the embodiment of the application adopts three-layer blades, the impact on the food material in the axial direction of the blade shaft is small, the noise is reduced, and the stress of the motor in the axial direction of the blade shaft is also reduced. Moreover, the three-layer blades have good turbulence effect and are not easy to paste the bottom.

[0069] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. A stirring blade, characterized by, The application relates to a stirring blade, which comprises: a blade shaft (220); upper, middle and lower blades (221, 222 and 223) connected to the blade shaft (220), the upper, middle and lower blades (221, 222 and 223) being arranged in sequence from top to bottom along the axial direction of the blade shaft, the middle blade (222) being a flat blade, the upper blade (221) being upwardly bent, the lower blade (223) being downwardly bent, the distance between the blade tip of the middle blade (222) and the axis of the blade shaft being greater than the distance between the blade tip of the upper blade (221) and the axis of the blade shaft, and the distance between the blade tip of the middle blade (222) and the axis of the blade shaft being greater than the distance between the blade tip of the lower blade (223) and the axis of the blade shaft.

2. The mixing blade according to claim 1, wherein The upper blade (221) comprises upwardly bent upper blade leaves (2210), one of which is a first upper blade leaf (2210a), the lower blade (223) comprises downwardly bent lower blade leaves (2230), one of which is a first lower blade leaf (2230a), and the angle between the line connecting the blade tip of the first upper blade leaf (2210a) and the axis of the blade shaft and the line connecting the blade tip of the first lower blade leaf (2230a) and the axis of the blade shaft is theta 4, 0 DEG <= theta 4 <= 90 DEG.

3. The mixing blade of claim 1, wherein The upper blade (221) comprises upwardly bent upper blade leaves (2210), the lower blade (223) comprises downwardly bent lower blade leaves (2230), and the position where at least one of the upper blade leaves (2210) extends is directly opposite to the position where at least one of the lower blade leaves (2230) extends along the axial direction of the blade shaft.

4. The mixing blade according to any one of claims 1 to 3, characterized in that, The intermediate blade (222) includes a planar intermediate blade (2220), the blade of the upper blade (221) and the intermediate blade (2220) are spaced apart in a circumferential direction of a blade shaft at an angle θ 11 , 0°≤θ 11 ≤120°, and / or the blade of the lower blade (223) and the intermediate blade (2220) are spaced apart in a circumferential direction of a blade shaft at an angle θ 12 , 0°≤θ 12 ≤120°.

5. The mixing blade according to any one of claims 1 to 3, wherein The blade leaves of the upper blade (221) are upwardly bent at an angle of theta 2, 30 DEG <= theta 2 <= 90 DEG, and / or the blade leaves of the lower blade (223) are downwardly bent at an angle of theta 3, 0 DEG < theta 3 <= 60 DEG.

6. The mixing blade according to any one of claims 1 to 3, wherein The distance between the blade tip of at least one of the blade leaves of the upper blade (221) and the axis of the blade shaft is a first distance, the distance between the blade tip of at least one of the blade leaves of the middle blade (222) and the axis of the blade shaft is a second distance, and the distance between the blade tip of at least one of the blade leaves of the lower blade (223) and the axis of the blade shaft is a third distance, the third distance being greater than the first distance and smaller than the second distance.

7. The mixing blade according to any one of claims 1 to 3, wherein The distance between the upper blade (221) and the middle blade (222) along the axial direction of the cutter shaft is H 21 , 0≤H 21 ≤20mm; and / or, the distance between the lower blade (223) and the middle blade (222) along the axial direction of the cutter shaft is H 22 , 0≤H 22 ≤20mm.

8. The mixing blade according to any one of claims 1 to 3, wherein The upper blade (221) is provided with three blade leaves which are uniformly distributed along the circumferential direction of the blade shaft, and / or The lower blade (223) is provided with three blade leaves which are uniformly distributed along the circumferential direction of the blade shaft, and / or The middle blade (222) is provided with three blade leaves which are uniformly distributed along the circumferential direction of the blade shaft.

9. A food processor, characterized in that, The application also relates to a cup assembly (20) comprising a cup body (21) and the stirring blade (22) as claimed in any one of claims 1 to 8, the stirring blade (22) being rotatably mounted in the cup body (21). The cup body (21) comprises a bottom (211) at the bottommost position, the axial distance between the blade tip of the lower blade (223) of the stirring blade (22) and the bottom (211) is H, 3 mm <= H <= 25 mm, and / or The maximum outer diameter of the stirring blade (22) is 0.4-0.9 times the inner diameter of the cup body (21).

10. The food processor of claim 9, wherein, ​ ​

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