Knife assembly and food processor with same

Abstract

The invention discloses a cutter assembly and a food processor with the cutter assembly. The cutter assembly comprises a cutter shaft, a cutter blade and a cutter blade, the plurality of blades are connected with the cutter shaft and are arranged at intervals in the circumferential direction of the cutter shaft, one of the plurality of blades is a first blade, the shape of the first blade is different from that of at least one of the other blades, and in a first plane perpendicular to the axis of the cutter shaft, the number of the blades in the first plane is larger than that of the other blades. The distance between the geometric center of the cutter assembly and the gravity center of the cutter assembly is smaller than or equal to 1.3 mm. According to the knife assembly disclosed by the invention, the first blade is arranged, and the distance between the geometric center of the knife assembly comprising the first blade and the gravity center of the knife assembly is controlled to be 0-1.3 mm, so that the adaptability of the knife assembly can be improved, the diversity of food processed by the knife assembly is improved, and the stable operation of the knife assembly is ensured; the noise in the operation process of the knife assembly is reduced, and the experience feeling of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of food processing, and more particularly to a knife assembly and a food processor having the same. Background Art

[0002] Conventional meat grinder knife sets are four-blade or two-blade, and generally the two blades have the same shape and are symmetrically designed. This can achieve a balance of the knife set. However, since the diameters of different-height cup bodies are different, the unified blade design does not have a good effect on cutting meat. Therefore, currently, some technicians have designed some blades with differences, but the balance of this structure is not good, and there is a large vibration and noise during use, which needs further improvement. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. For this reason, the present invention provides a knife assembly, which can increase the adaptability of the knife assembly, improve the diversity of food processing by the knife assembly, while ensuring the stable operation of the knife assembly, reducing the noise during the operation of the knife assembly, and improving the user experience.

[0004] The present invention also provides a food processor having the above knife assembly.

[0005] The knife assembly according to the first aspect of the present invention includes: a knife shaft; a plurality of blades, the plurality of blades are connected to the knife shaft and arranged at intervals along the circumferential direction of the knife shaft, and one of the plurality of blades is a first blade, and the shape of the first blade is different from that of at least one of the remaining blades. Wherein, in a first plane perpendicular to the axis of the knife shaft, the distance between the geometric center and the center of gravity of the knife assembly is less than or equal to 1.3 mm.

[0006] According to the knife assembly of the present invention, by providing the first blade and controlling the distance between the geometric center and the center of gravity of the knife assembly including the first blade to be between 0 and 1.3 mm, it is possible to increase the adaptability of the knife assembly, improve the diversity of food processing by the knife assembly, while ensuring the stable operation of the knife assembly, reducing the noise during the operation of the knife assembly, and improving the user experience.

[0007] According to some embodiments of the present invention, the distance between the geometric center and the center of gravity in a first direction in the first plane is less than or equal to 0.9 mm, and the distance between the geometric center and the center of gravity in a second direction in the first plane is less than or equal to 0.9 mm, and the first direction is perpendicular to the second direction.

[0008] According to some embodiments of the present invention, the first blade has no cutting edge, or the thickness of the cutting edge of the first blade is a preset thickness, so that the cutting edge of the first blade is a blunt edge.

[0009] According to some embodiments of the present invention, the thickness of the first blade is 0.99 mm - 2.99 mm; and / or, the preset thickness is 0.1 mm - 1.5 mm.

[0010] According to some embodiments of the present invention, a plurality of the blades are arranged staggeredly in the axial direction of the knife shaft, and the first blade is located on one side of the remaining blades facing the bottom wall of the stirring cavity.

[0011] According to some embodiments of the present invention, the first blade extends linearly in the first plane.

[0012] According to some embodiments of the present invention, the first blade includes a body portion and a bent portion. One end of the body portion is connected to the knife shaft and the other end extends radially outward along the knife shaft. One end of the bent portion is connected to the other end of the body portion, and the other end of the bent portion extends radially outward along the knife shaft and axially toward the remaining blades.

[0013] According to some embodiments of the present invention, one of the plurality of blades is a second blade, and the second blade is arranged on the other side of the knife shaft diametrically opposite to the first blade. Wherein, in the first plane, the connection line between the center point of the end of the first blade connected to the knife shaft in the circumferential direction of the knife shaft and the center point of the knife shaft is a first line, and the connection line between the center point of the end of the second blade connected to the knife shaft in the circumferential direction of the knife shaft and the center point of the knife shaft is a second line, and the included angle between the first line and the second line is 120° - 178°.

[0014] According to some embodiments of the present invention, the thicknesses of at least two of the blades are different.

[0015] According to some embodiments of the present invention, the difference in thickness between any two of the blades is 0.4 mm - 0.7 mm.

[0016] According to some embodiments of the present invention, the thicknesses of the cutting edges of at least two of the blades are different.

[0017] According to some embodiments of the present invention, the rotation speed of the knife assembly is less than or equal to 5000 r / min.

[0018] According to some embodiments of the present invention, the rotation speed of the knife assembly is 2500 r / min - 4000 r / min.

[0019] The food processor according to the second aspect of the present invention includes a cup assembly and a knife assembly according to the first aspect of the present invention. The cup assembly has a stirring cavity, and the knife assembly is disposed in the stirring cavity.

[0020] According to the food processor of the present invention, by providing the knife assembly of the above first aspect, the overall performance of the food processor is improved.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of a food processor according to an embodiment of the present invention;

[0023] Figure 2 is a cross-sectional view of a food processor according to an embodiment of the present invention;

[0024] Figure 3 is a schematic diagram of a food processor from another angle according to an embodiment of the present invention;

[0025] Figure 4 is along Figure 3 the cross-sectional view taken along line A-A shown in

[0026] Figure 5 is along Figure 3 the cross-sectional view taken along line B-B shown in

[0027] Figure 6 is a schematic diagram of a food processor from yet another angle according to an embodiment of the present invention, wherein the geometric center and the center of gravity of the knife assembly are shown;

[0028] Figure 7 is Figure 1 a schematic diagram of the knife assembly shown in

[0029] Figure 8 is Figure 1 a schematic diagram of the knife assembly from another angle shown in

[0030] Figure 9 is along Figure 5 the cross-sectional view taken along line C-C shown in

[0031] Reference numerals:

[0032] 100, food processor;

[0033] 10, knife assembly; 11, knife shaft; 12, blade; 121, first blade; 1211, body portion; 1212, bent portion; 122, second blade;

[0034] 20, cup assembly; 21, cup body; 211, stirring chamber; 22, cup cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] Reference is made below to Figures 1 - 9 describe the knife assembly 10 according to an embodiment of the first aspect of the present invention.

[0037] As Figures 6 - 7 shown, the knife assembly 10 according to an embodiment of the first aspect of the present invention includes: a knife shaft 11 and a plurality of blades 12. The plurality of blades 12 are connected to the knife shaft 11 and are arranged at intervals along the circumferential direction of the knife shaft 11. One of the plurality of blades 12 is a first blade 121, and the shape of the first blade 121 is different from the shape of at least one of the remaining blades 12. Wherein, in a first plane perpendicular to the axis of the knife shaft 11, the distance between the geometric center and the center of gravity of the knife assembly 10 is less than or equal to 1.3 mm.

[0038] Specifically, the blade 12 is fixedly connected to the knife shaft 11, and the knife shaft 11 drives the blade 12 to rotate so as to cut and stir the food with the blade 12; there are a plurality of blades 12. For example, there can be two, three, four or more. The plurality of blades 12 can improve the processing effect of the knife assembly 10 on food. In addition, one of the plurality of blades 12 is a first blade 121, and the shape of the first blade 121 is different from the shape of at least one of the remaining blades 12. Wherein, the shape of the first blade 121 can be designed according to the actual use situation so that it can be adapted to different food processors 100, or designed according to different cutting effects, which can increase the adaptability of the knife assembly 10 and the diversity of food processing.

[0039] In a gravitational field, the point through which the resultant force of the gravity of all the component fulcrums passes when the object is in any orientation is called the center of gravity; the center of gravity of a regular and uniformly dense object is its geometric center. The shape of the first blade 121 is different from that of at least one of the remaining blades 12, that is, the cutter assembly 10 is an irregular object. Furthermore, the center of gravity of the cutter assembly 10 may deviate from the geometric center of the cutter assembly 10, which may lead to problems such as poor balance, unstable operation, and poor noise of the cutter assembly 10. However, in a first plane perpendicular to the axis of the cutter shaft 11, the distance between the geometric center of the cutter assembly 10 and the center of gravity of the cutter assembly 10 is less than or equal to 1.3 mm. For example, the distance between the geometric center of the cutter assembly 10 and the center of gravity of the cutter assembly 10 can be 0.1 mm, 0.2 mm, 0.4 mm, 0.6 mm, 0.8 mm, 1.0 mm, or 1.3 mm. Through three-dimensional simulation calculation, when the distance range between the center of gravity and the geometric center of the cutter assembly 10 is controlled within [0, 1.3 mm], the dynamic balance of the cutter assembly 10 can be improved, the vibration during the operation of the cutter assembly 10 can be reduced, and further, the running stability of the cutter assembly 10 can be improved, the noise during the operation of the cutter assembly 10 can be reduced, thereby improving the user experience.

[0040] According to the cutter assembly 10 of the embodiment of the present invention, by providing the first blade 121 and controlling the distance between the geometric center of the cutter assembly 10 including the first blade 121 and the center of gravity of the cutter assembly 10 to be between 0 and 1.3 mm, while increasing the adaptability of the cutter assembly 10 and improving the diversity of food processing by the cutter assembly 10, the stable operation of the cutter assembly 10 can be ensured, the noise during the operation of the cutter assembly 10 can be reduced, and the user experience can be improved.

[0041] According to some embodiments of the present invention, such as Figure 6As shown, the distance between the geometric center and the center of gravity in the first direction within the first plane is less than or equal to 0.9 mm, and the distance between the geometric center and the center of gravity in the second direction within the first plane is less than or equal to 0.9 mm. The first direction is perpendicular to the second direction. Among them, let the first direction be the X-axis direction, the second direction be the Y-axis direction, the geometric center be the origin O, and the center of gravity be point M. The perpendicular distance h2 between the geometric center and the center of gravity in the X-axis direction within the first plane, then the value range of h2 is [0, 0.9 mm]. The perpendicular distance h1 between the geometric center and the center of gravity in the Y-axis direction within the first plane, and the value range of h1 is [0, 0.9 mm]. That is to say, h1 can be 0.1 mm, 0.2 mm, 0.3 mm, 0.5 mm, 0.7 mm or 0.9 mm, and h2 can be 0.1 mm, 0.2 mm, 0.3 mm, 0.5 mm, 0.7 mm or 0.9 mm. Through three-dimensional simulation calculation, when h1 ∈ [0, 0.9 mm] and h2 ∈ [0, 0.9 mm], the dynamic balance of the cutter assembly 10 is in a better state, which can reduce the noise during the operation of the cutter assembly 10 and improve the running stability of the cutter assembly 10.

[0042] According to some embodiments of the present invention, the first blade 121 has no cutting edge, or the thickness of the cutting edge of the first blade 121 is a preset thickness, so that the cutting edge of the first blade 121 is a blunt edge. Among them, in some embodiments, the first blade 121 has no cutting edge, and the cutting ability of the non-cutting edge is poor, mainly playing a role of stirring and beating. In this way, when processing food, the cutting effect on the food can be reduced, and further, it can effectively prevent the food from being processed too finely, so that foods such as meatballs that do not need to be processed too finely can be made; at the same time, the first blade 121 has no cutting edge, that is, there is no need to perform edge-opening treatment on the first blade 121, which can reduce the production difficulty of the first blade 121 and further improve the production convenience of the first blade 121.

[0043] In other embodiments, the thickness of the cutting edge of the first blade 121 is a preset thickness, so that the cutting edge of the first blade 121 is a blunt edge. Among them, the preset thickness can be designed according to actual needs, and the preset thickness is greater than the thickness of the cutting edge of the sharp blade, so that the cutting edge of the first blade 121 is a blunt edge. The blunt edge has a certain cutting property and can be used to cut food, but its cutting effect is relatively poor compared with that of the sharp blade. Therefore, when processing food, the blunt edge can ensure that the food processing efficiency is not too low and can prevent the food from being processed too finely and unable to make some foods that require adhesiveness, such as meatballs.

[0044] According to some embodiments of the present invention, such as Figures 8 - 9As shown, the thickness of the first blade 121 is 0.99 mm - 2.99 mm. Among them, let the thickness of the first blade 121 be T, and the setting range of T is [0.99 mm, 2.99 mm]. For example, the value of T can be 0.99 mm, 0.1 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, or 2.99 mm. Setting the thickness of the first blade 121 at 0.99 mm - 2.99 mm can prevent the first blade 121 from being too thin and deforming, thereby ensuring the normal use of the food processor 100. At the same time, it can also prevent the first blade 121 from being too thick, resulting in poor operating stability of the machine, and it is easy to adhere the ingredients to the cup wall during the whipping process, and the efficiency of other blades in whipping the ingredients is low.

[0045] According to some embodiments of the present invention, as Figures 8 - 9 shown, the preset thickness is 0.1 mm - 1.5 mm. Specifically, the thickness of the cutting edge of the first blade 121 is 0.1 mm - 1.5 mm. Let the thickness of the cutting edge of the first blade 121 be t, and the value range of t is [0.1 mm, 1.5 mm]. For example, the thickness of the cutting edge of the first blade 121 can be 0.1 mm, 0.2 mm, 0.3 mm, 0.5 mm, 1 mm, 1.2 mm, or 1.5 mm. Among them, the smaller the thickness of the cutting edge, the sharper the cutting edge and the better the cutting effect. Therefore, setting 0.1 mm ≤ T ≤ 1.5 mm can reduce the cutting effect of the first blade 121, so that the food processor 100 can avoid cutting the food too finely on the premise of ensuring the food processing efficiency, and then the first blade 121 can mainly play the roles of impact, pulling, and slapping, so that foods such as meatballs that do not need to be processed too finely can be made.

[0046] In some specific embodiments of the present invention, as Figures 8 - 9 shown, the width of the cutting edge of the first blade 121 is 0.5 mm - 8 mm. Among them, let the width of the cutting edge of the first blade 121 be d, and the value range of d is [0.5 mm, 8 mm]. For example, the width of the cutting edge of the first blade 121 can be 0.5 mm, 0.6 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, or 8 mm. Setting the width of the cutting edge of the first blade 121 between 0.5 mm - 8 mm can enable the first blade 121 to improve the strength of the first blade 121 while ensuring the effective cutting of the ingredients by the cutting edge.

[0047] According to some embodiments of the present invention, as Figure 8As shown, a plurality of blades 12 are arranged staggeredly in the axial direction of the cutter shaft 11, and the first blade 121 is located on one side of the remaining blades 12 facing the bottom wall of the stirring cavity 211. Among them, the plurality of blades 12 being arranged staggeredly in the axial direction of the cutter shaft 11 can enable the plurality of blades 12 not to interfere with each other, and at the same time can also enable the blades 12 to process food at different positions, thereby improving the effect and efficiency of food processing. In addition, the first blade 121 is located on one side of the remaining blades 12 facing the bottom wall of the stirring cavity 211, that is, the blade 12 arranged at the bottommost is the first blade 121. Setting the first blade 121 at the bottommost can make the food at the bottom roll upward, prevent the food from depositing at the bottom, and thereby increase the cutting probability of the ingredients and the other blades 12, enhancing the stirring and pulverizing effect of the food processor 100.

[0048] According to some embodiments of the present invention, as Figure 7 shown, the first blade 121 extends linearly in the first plane, that is, the first blade 121 is formed into a blade 12 in the shape of a straight plate. The structure of the straight plate is simple and convenient to manufacture, thereby improving the convenience of processing and forming the first blade 121.

[0049] According to some embodiments of the present invention, as Figure 1 shown, the first blade 121 includes a body portion 1211 and a bending portion 1212. One end of the body portion 1211 is connected to the cutter shaft 11 and the other end extends radially outward along the cutter shaft 11. One end of the bending portion 1212 is connected to the other end of the body portion 1211, and the other end of the bending portion 1212 extends radially outward along the cutter shaft 11 and axially along the cutter shaft 11 toward the remaining blades 12.

[0050] Specifically, one end of the body portion 1211 is connected to the cutter shaft 11, and the other end extends horizontally outward in the radial direction of the cutter shaft 11. The bending portion 1212 is connected to the end of the body portion 1211 away from the cutter shaft 11 and extends obliquely upward and outward along the axial direction of the cutter shaft 11, so that an angle is formed between the bending portion 1212 and the body portion 1211, and the angle is an obtuse angle. Among them, during the process of the first blade 121 rotating to cut and stir the food, the bending portion 1212 can bring an oblique thrust in the circumferential direction to the food on the inner wall surface of the stirring cavity 211, which can drive the food at the bottom and the side to roll upward, prevent the food from depositing at the bottom and the side wall, and at the same time, can also increase the cutting probability of the flipped ingredients and the stirring blade, thereby enhancing the stirring and pulverizing effect.

[0051] In some specific embodiments, as Figure 2As shown, the distance between the first blade 121 and the peripheral wall of the stirring chamber 211 is 1 mm - 10 mm. Specifically, the first blade 121 includes a body portion 1211 and a bent portion 1212. The bent portion 1212 is connected to one end of the body away from the cutter shaft 11. Thus, the distance between the first blade 121 and the peripheral wall of the stirring chamber 211 is the distance between the end of the bent portion 1212 close to the cup wall and the peripheral wall of the stirring chamber 211. Let this distance be S, where 1 mm ≤ S ≤ 10 mm. For example, the value of S can be 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, or 10 mm. Among them, the gap between the bent portion 1212 and the peripheral wall of the cup body 21 can be used to define the acting force of the bent portion 1212 on the food. By controlling the size of the gap, the acting force of the bent portion 1212 can be controlled, thereby avoiding the situation where the food at the bottom cannot be provided with an upward rolling force due to the distance between the bent portion 1212 and the cup body 21 being too large or too small, and further avoiding food deposition and improving the food processing effect.

[0052] In some specific embodiments, as Figures 1 - 5 shown, the first blade 121 includes a body portion 1211 and a bent portion 1212. The plane passing through the free end of the bent portion 1212 and perpendicular to the axis of the cutter shaft 11 is the first plane. In the first plane, the minimum distance from the free end of the bent portion 1212 to the side wall of the stirring chamber 211 is S, and the inner diameter of the stirring chamber 211 is R1, satisfying: 0.03 ≤ S / R1 ≤ 0.28. It should be noted that the free end of the bent portion 1212 refers to the end of the bent portion 1212 far from the body portion 1211. It can be understood that since the end of the bent portion 1212 also has a certain thickness, for the sake of facilitating the description of the beating and stirring of the ingredients at the edge of the bent portion 1212, the "minimum distance from the free end of the bent portion 1212 to the side wall of the stirring chamber 211" is used to represent the distance between the beating position at the edge of the bent portion 1212 and the side wall of the stirring chamber 211.

[0053] When the relationship between the distance S between the beating position at the edge of the bent portion 1212 and the side wall of the stirring chamber 211 and the inner diameter R1 of the stirring chamber 211 satisfies the above relationship, on the one hand, an appropriate gap is reserved between the bent portion 1212 and the side wall to avoid interference between the bent portion 1212 and the side wall of the stirring chamber 211; on the other hand, an appropriate gap is reserved between the bent portion 1212 and the side wall, which helps the bent portion 1212 to push the ingredients downward and then roll upward under the drive of the bent portion 1212, helps the bent portion 1212 to press out the large pieces of ingredients at the side wall, and can drive the ingredients to roll upward. It can not only beat and stir the ingredients well but also avoid the ingredients sticking to the side wall of the stirring chamber 211, thus achieving full beating and stirring of the ingredients.

[0054] When the distance between the bent portion 1212 and the side wall of the stirring chamber 211 is too large, the first blade 121 cannot provide an inward rolling force to the food on the side wall, and the food will accumulate on the side wall, affecting the food processing effect.

[0055] When the distance between the bent portion 1212 and the side wall of the stirring chamber 211 is too small, the first blade 121 may touch the side wall, which is not conducive to the operation of the knife assembly 10.

[0056] Optionally, S / R1 can be 0.03, 0.04, 0.05, 0.06, 0.1, 0.2, 0.25, 0.26, 0.28, and there is no limitation here.

[0057] In some specific embodiments, as Figures 3 - 5 shown, the connection between the bent portion 1212 and the body portion 1211 is the bending position, and the plane passing through the bending position and perpendicular to the axis of the knife shaft 11 is the second plane. In the second plane, the minimum distance from the bending position to the side wall of the stirring chamber 211 is D, and the inner diameter of the stirring chamber 211 is R2, and it satisfies: 0.03 ≤ D / R2 ≤ 0.5. Among them, the bent portion 1212 can stir the food ingredients near the side wall of the stirring chamber 211, preventing the food ingredients from sticking to the side wall of the stirring chamber 211, and even to a certain extent making the food ingredients near the side wall of the stirring chamber 211 stir towards the direction of the knife shaft 11. Therefore, the "minimum distance from the bending position of the bent portion 1212 to the side wall of the stirring chamber 211" here represents the effective stirring position of the end of the bent portion 1212 near the body portion 1211. For the bending position, as shown in the attached drawings, there is a bending angle between the body portion 1211 and the bent portion 1212, and the tip of the bending angle is the bending position. In order to avoid stress concentration at the tip of the bending angle, the tip of the bending angle is usually processed with an arc transition to make the connection between the body portion 1211 and the bent portion 1212 more reliable.

[0058] When the present application satisfies the above relational expression, an appropriate distance is reserved between the bending position and the side wall, which helps the bent portion 1212 to push the food ingredients downward and roll upward under the drive of the bent portion 1212. The bent portion 1212 can better stir the food ingredients near the side wall of the stirring chamber 211, and even make the food ingredients near the side wall of the stirring chamber 211 stir towards the direction of the knife shaft 11, so that the side wall of the stirring chamber 211 is not easily adhered to the side wall of the stirring chamber 211, and the food ingredients in the stirring chamber 211 are always in a cyclic stirring process from the center of the knife shaft 11 towards the side wall of the stirring chamber 211 and then from the side wall of the stirring chamber 211 towards the knife shaft 11, so that the blade 12 can better beat and stir the food ingredients.

[0059] Optionally, D / R2 can be 0.03, 0.04, 0.05, 0.06, 0.1, 0.2, 0.3, 0.4, 0.5, without limitation here.

[0060] According to some embodiments of the present invention, as Figure 7 shown, one of the plurality of blades 12 is the second blade 122, and the second blade 122 is arranged on the other side of the knife shaft 11 radially opposite to the first blade 121. Among them, in the first plane, the line connecting the center point of the end of the first blade 121 connected to the knife shaft 11 in the circumferential direction of the knife shaft 11 and the center point of the knife shaft 11 is the first line, and the line connecting the center point of the end of the second blade 122 connected to the knife shaft 11 in the circumferential direction of the knife shaft 11 and the center point of the knife shaft 11 is the second line, and the included angle between the first line and the second line is 120° - 178°.

[0061] For example, the included angle between the first line and the second line is a, and a can be 120°, 135°, 150° or 165°. Specifically, the second blade 122 is arranged on the other side of the knife shaft 11 radially opposite to the first blade 121. It can be that the first blade 121 and the second blade 122 are arranged in the same plane perpendicular to the axis of the knife shaft 11 and are arranged on the other side of the knife shaft 11 radially opposite to the first blade 121. It can also be that the first blade 121 and the second blade 122 are not in the same plane, and the first blade 121 and the second blade 122 can be arranged at intervals along the axial direction of the knife shaft 11 and are correspondingly arranged on the opposite sides of the second blade 122.

[0062] The second blade 122 is different in shape from the first blade 121, and both the first blade 121 and the second blade 122 are mounted on the knife shaft 11. Among them, the positions where the first blade 121 and the second blade 122 are connected to the knife shaft 11 are the main stress points of the knife shaft 11. Furthermore, the included angle between the first line and the second line can be used to indicate the included angle between the first blade 121 and the second blade 122 in the circumferential direction of the knife shaft 11. When the included angle a between the first line and the second line is 120° - 178°, the centers of gravity of the first blade 121 and the second blade 122 can tend to a symmetrical relationship, thereby improving the dynamic balance of the knife assembly 10, further reducing the vibration of the knife assembly 10 during operation, and thus reducing the noise of the food processor 100 and improving the user experience.

[0063] The first blade 121 is located on the side of the second blade 122 facing the bottom wall of the stirring chamber 211. In the axial direction of the knife shaft 11, the minimum distance between the first plane and the second blade 122 is C, and the distance between the free end of the bending portion 1212 and the bending position of the first blade 121 is c, satisfying: 0.5 ≤ c / C ≤ 0.99. When the above relational expression is satisfied, when the bending portion 1212 conveys the food material in the direction of the knife shaft 11, the second blade 122 can better beat, stir, and convey this part of the food material, so that the food material can be fully beaten and stirred.

[0064] Optionally, c / C can be 0.5, 0.6, 0.7, 0.8, 0.9, 0.99, and there is no limitation here.

[0065] According to some embodiments of the present invention, the thicknesses of at least two blades 12 are different. Among them, one of the plurality of blades 12 is the first blade 121 and the shape of the first blade 121 is different from at least one of the shapes of the remaining blades 12. That is to say, the centers of gravity of the first blade 121 and at least one of the remaining blades 12 cannot tend to symmetric positions. Furthermore, the weight of the blade 12 can be adjusted by setting the thickness of the blade 12, so that the center of gravity of the blade assembly 10 can tend to the position of the geometric center, ensuring the dynamic balance of the blade assembly 10; at the same time, the process of adjusting the thickness is relatively simple, and thus the production complexity of the blade 12 can be reduced, and the production efficiency of the blade 12 can be improved.

[0066] According to some embodiments of the present invention, the difference in thickness between any two blades 12 is 0.4 mm - 0.7 mm. For example, the difference in thickness between any two blades 12 can be 0.4 mm, 0.5 mm, 0.6 mm, or 0.7 mm. In this way, the weight of the blade 12 can be further limited, which is beneficial to adjusting the center of gravity of the blade 12 and ensuring the dynamic balance of the blade assembly 10.

[0067] According to some embodiments of the present invention, the thicknesses of the cutting edges of at least two blades 12 are different. Among them, the thickness of the cutting edge can be adjusted according to the actual situation. For example, when the food needs to be processed more finely, all the remaining cutting edges except the first blade 121 can be made into sharp edges to increase the cutting effect; when the food does not need to be processed more finely, some can be made into sharp edges and some into blunt edges, so that the food processor 100 can meet the customer's needs while ensuring the processing efficiency.

[0068] According to some embodiments of the present invention, the rotation speed of the blade assembly 10 is less than or equal to 5000 r / min. In this way, it can effectively avoid the food being cut too finely due to too high a rotation speed of the blade assembly 10, and ensure the particle size of the food to the greatest extent possible.

[0069] According to some embodiments of the present invention, the rotational speed of the knife assembly 10 is 2500 r / min - 4000 r / min. For example, the rotational speed of the knife assembly 10 can be 2500 r / min, 3000 r / min, 3500 r / min, or 4000 r / min. This can effectively prevent the food from being cut too finely due to too high a rotational speed of the knife assembly 10, ensure the particle size of the food to the greatest extent possible, and can also effectively avoid the problems of incomplete cutting and low efficiency caused by too low a rotational speed.

[0070] The food processor 100 according to the second aspect embodiment of the present invention includes a cup assembly 20 and a knife assembly 10 according to the first aspect embodiment of the present invention. The cup assembly 20 has a stirring cavity 211, and the knife assembly 10 is disposed in the stirring cavity 211.

[0071] Specifically, the cup assembly 20 has a stirring cavity 211 for accommodating the food to be processed, such as meat, vegetables, etc. The knife assembly 10 is disposed in the stirring cavity 211 for stirring and cutting the food to be processed in the stirring cavity 211 to break it up and stir it evenly.

[0072] By providing the knife assembly 10 of the first aspect embodiment, the overall performance of the food processor 100 is improved according to the food processor 100 of the embodiment of the present invention.

[0073] In some specific embodiments of the present invention, as Figure 2 shown, the cup assembly 20 includes: a cup body 21 and a cup lid 22. The cup body 21 defines a stirring cavity 211 that is open on one side, and the cup lid 22 is disposed on the open side of the cup body 21 to open or cover the stirring cavity 211. Among them, the cup lid 22 is disposed on the open side of the cup body 21. When it is necessary to put food into the stirring cavity 211 or take food out of the stirring cavity 211, the cup lid 22 can be moved away from the open side of the cup body 21 to open the stirring cavity 211; when it is necessary to cut and stir the food, the cup lid 22 is covered on the open side of the cup body 21 to make the stirring cavity 211 in a sealed state, which can prevent splashing when the food processor 100 processes the food, and thus can improve the use safety of the food processor 100. Optionally, in some specific embodiments, the cup lid 22 and the cup body 21 are detachably connected; in other embodiments, the cup lid 22 and the cup body 21 are movably connected, and the cup lid 22 can move relative to the cup body 21 to open and seal the open side of the cup body 21.

[0074] In some specific embodiments of the present invention, a capacity indication area is provided on the inner wall of the stirring cavity 211. In the vertical direction, the first blade 121 is lower than the indication line at the uppermost side of the capacity indication area. Specifically, the capacity indication area is used to define the food placement capacity, which can effectively avoid the problems of incomplete food processing or food splashing out of the food processor 100 caused by excessive food placement, thereby ensuring the food processing effect and improving the use safety of the food processor 100. In addition, in the vertical direction, the first blade 121 is lower than the indication line at the uppermost side of the capacity indication area. Among them, the bent portion 1212 of the first blade 121 can push the food to roll upward. Furthermore, making the first blade 121 lower than the indication line at the uppermost side of the capacity indication area can effectively avoid the first blade 121 pushing the food to the uppermost end of the stirring cavity 211 during food processing, resulting in the food being unable to be cut by other stirring blades, thereby improving the processing effect of the food processor 100.

[0075] When food needs to be processed, first move the cup lid 22 away from the open side of the cup body 21 to open the stirring cavity 211. Then place the food to be processed in the stirring cavity 211. At the same time, note that the food should not exceed the highest indication line of the capacity indication area. Then cover the stirring cavity 211 with the cup lid 22 to make the stirring cavity 211 in a sealed state. Then start the drive device of the food processor 100 to drive the knife shaft 11 to move, thereby driving the plurality of blades 12 to rotate, so as to stir and crush the food and process the food to the required state. Turn off the power of the food processor 100, then open the stirring cavity 211 again, and transfer the food from the stirring cavity 211 to an external container to complete the food processing work.

[0076] In some embodiments of the present invention, such as Figure 2As shown, the minimum distance from the first blade 121 to the bottom wall of the stirring chamber 211 is h, and the minimum distance from the bottom wall of the stirring chamber 211 to the top wall of the stirring chamber 211 is H, satisfying 0.03 ≤ h / H ≤ 0.4. Meeting the above relationship can enable the first blade 121 to better stir the ingredients near the bottom wall of the stirring chamber 211. It can be understood that during the rotation of the first blade 121, the main body portion 1211 can better beat and stir the ingredients near the bottom of the stirring chamber 211, making it difficult for the ingredients to adhere to the bottom wall of the stirring chamber 211. Further, as the first blade 121 continues to rotate, under the action of centrifugal force, the ingredients will be transported towards the outer periphery of the main body portion 1211. When the ingredients are transported to the outer periphery of the main body portion 1211, the bent portion can further beat and stir the ingredients near the edge of the main body portion 1211, and the inclined upward bent portion 1212 can also better transport the ingredients that are continuously transported radially outward under the action of centrifugal force towards the direction of the knife shaft 11, so that the ingredients can be fully beaten and stirred in the stirring chamber 211, and the ingredients are not easily adhered to the bottom wall and side wall of the stirring chamber 211.

[0077] Optionally, h / H can be 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.2, 0.3, and there is no limitation here.

[0078] In some embodiments of the present invention, as Figure 2 shown, the angle β between the plane where the side wall of the stirring chamber 211 is located and the plane where the side surface of the bent portion 1212 facing the side wall is located satisfies: 1° ≤ β ≤ 60°. Meeting the above embodiments, the bent portion 1212 can better beat and stir the ingredients near the side wall of the stirring chamber 211, and to a certain extent, can transport the ingredients near the side wall of the stirring chamber 211 towards the direction of the knife shaft 11.

[0079] Optionally, β can be 1°, 2°, 3°, 4°, 10°, 20°, 30°, 40°, 50°, 60°, and there is no limitation here.

[0080] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by 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. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0081] In addition, 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 quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more, unless specifically defined otherwise.

[0082] In the present invention, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0083] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0084] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A knife assembly, characterized in that, Comprising: A tool shaft; A plurality of blades, the plurality of blades being connected to the tool shaft and arranged at intervals in the circumferential direction of the tool shaft. One of the plurality of blades is a first blade, and the shape of the first blade is different from the shape of at least one of the remaining blades. Wherein, in a first plane perpendicular to the axis of the tool shaft, the distance between the geometric center and the center of gravity of the tool assembly is less than or equal to 1.3 mm.

2. The knife assembly according to claim 1, wherein The distance between the geometric center and the center of gravity in a first direction in the first plane is less than or equal to 0.9 mm, and the distance between the geometric center and the center of gravity in a second direction in the first plane is less than or equal to 0.9 mm. The first direction is perpendicular to the second direction.

3. The knife assembly according to claim 1, wherein The first blade has no cutting edge, or the thickness of the cutting edge of the first blade is a preset thickness, so that the cutting edge of the first blade is a blunt edge.

4. The knife assembly according to claim 3, wherein, The thickness of the first blade is 0.99 mm - 2.99 mm; and / or, the preset thickness is 0.1 mm - 1.5 mm.

5. The knife assembly according to claim 3, characterized in that, The plurality of blades are arranged staggeredly in the axial direction of the tool shaft, and the first blade is located on the side facing the bottom wall of the stirring cavity of the remaining blades.

6. The knife assembly according to claim 5, characterized in that, The first blade extends in a straight line in the first plane.

7. The knife assembly according to claim 6, wherein The first blade includes a body portion and a bent portion. One end of the body portion is connected to the tool shaft and the other end extends radially outward along the tool shaft. One end of the bent portion is connected to the other end of the body portion, and the other end of the bent portion extends radially outward along the tool shaft and axially toward the remaining blades.

8. The knife assembly according to claim 1, wherein One of the plurality of blades is a second blade, and the second blade is arranged on the other side opposite to the first blade in the radial direction of the tool shaft. Wherein, in the first plane, the connection line between the center point in the circumferential direction of the end of the first blade connected to the tool shaft and the center point of the tool shaft is a first line, and the connection line between the center point in the circumferential direction of the end of the second blade connected to the tool shaft and the center point of the tool shaft is a second line. The included angle between the first line and the second line is 120° - 178°.

9. The knife assembly according to claim 1, characterized in that The thicknesses of at least two of the blades are different.

10. The knife assembly according to claim 9, wherein, The difference in thickness between any two of the blades is 0.4 mm - 0.7 mm.

11. The knife assembly according to claim 1, characterized in that, The thicknesses of the cutting edges of at least two of the blades are different.

12. The knife assembly according to claim 1, characterized in that, The rotational speed of the tool assembly is less than or equal to 5000 r / min.

13. The knife assembly according to claim 12, characterized in that, The rotational speed of the tool assembly is 2500 r / min - 4000 r / min.

14. A food processor, characterized in that, Comprising: a cup assembly and the tool assembly according to any one of claims 1 - 13, the cup assembly having a stirring cavity, and the tool assembly is disposed in the stirring cavity.

Images