CN113116187B

CN113116187B - Smash sword, stirring knife tackle spare and food processor

Info

Publication number: CN113116187B
Application number: CN202010044794.7A
Authority: CN
Inventors: 刘苗; 梅长云; 刘华; 曹正; 郭长帅
Original assignee: Guangdong Midea Consumer Electric Manufacturing Co Ltd
Current assignee: Guangdong Midea Consumer Electric Manufacturing Co Ltd
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2022-07-08
Anticipated expiration: 2040-01-15
Also published as: CN113116187A

Abstract

The invention discloses a crushing cutter, a stirring cutter assembly and a food processor. Wherein, the crushing cutter comprises a blade body and a microstructure; the micro structure is convexly arranged on the blade body; the height dimension of the microstructure is defined as h, wherein h is more than or equal to 0.1mm and less than or equal to 3 mm. According to the invention, the microstructure is convexly arranged on the blade body, so that the friction resistance between the fluid and the wall surface of the microstructure can be reduced when the blade body moves in the fluid, and the movement noise of the blade body in the fluid can be reduced, namely, the problem of higher noise is improved from a sound source. Further, by defining the height dimension of the microstructure as h, and h is in the following range: h is more than or equal to 0.1mm and less than or equal to 3mm, so that the drag reduction effect is realized, and the noise is reduced; on the other hand, the energy utilization rate is improved, and the load of a driving part (for example, the driving part can be a motor) for driving the crushing knife to rotate is reduced.

Description

Smash sword, stirring knife tackle spare and food processor

Technical Field

The invention relates to the technical field of food processors, in particular to a crushing knife, a stirring knife assembly applying the crushing knife and a food processor applying the stirring knife assembly.

Background

In the food processor, the rotation speed of the stirring blade is high, so that the crushing capability of the food is good, but the beating noise is large. The traditional food processer usually achieves the noise reduction effect by adding a sound insulation device to block the path of noise, but the production cost is increased, and the whole food processer looks heavier.

The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.

Disclosure of Invention

The invention mainly aims to provide a crushing cutter, and aims to solve the problem of high noise improvement from a sound source.

In order to achieve the purpose, the crushing cutter provided by the invention comprises a blade body and a microstructure; the micro structure is convexly arranged on the blade body; the height dimension of the microstructure is defined as h, wherein h is more than or equal to 0.1mm and less than or equal to 3 mm.

Optionally, the width of the microstructure is defined as s, 0 < s < 3 h.

Optionally, the number of the micro-structures is multiple, the plurality of the micro-structures are arranged at intervals, and the distance between two adjacent micro-structures is defined as w, and w is greater than 0.2h and less than 3 h.

Optionally, the microstructures are ribs, protrusions, or dimples.

Optionally, the crushing cutter further comprises a connecting plate, the blade body is polygonal, and the blade body is provided with a connecting edge connected with the connecting plate; defining the connecting edge has first direction and the second direction that sets up that deviates from mutually to extend, the length direction of rib with the connecting edge is in the contained angle that the first direction formed is alpha, one of them diagonal of blade body with the connecting edge forms minimum contained angle Q1 in the first direction, one of them diagonal of blade body with the connecting edge forms maximum contained angle Q2 in the first direction, and the scope of alpha is: alpha is more than or equal to Q1 and less than or equal to Q2; or, the length direction of rib with the contained angle that the connection limit formed in the second direction is alpha, one of them diagonal of blade body with the connection limit is formed with minimum contained angle Q1 in the second direction, one of them diagonal of blade body with the connection limit is formed with the biggest contained angle Q2 in the second direction, and wherein the scope of alpha is: q1 is not less than alpha and not more than Q2.

Optionally, the blade body is long, and the length direction of the rib extends along the length direction of the blade body.

Optionally, the cross-sectional shape of the rib is rectangular, triangular or cylindrical.

Optionally, the cross-sectional shapes of a plurality of ribs of the same blade body are the same or different; the shapes of a plurality of convex parts of the same blade body are the same or different; the shapes of a plurality of pits of the same blade body are the same or different.

The invention also provides a stirring knife assembly which comprises a crushing knife, wherein the crushing knife comprises a blade body and a microstructure; the micro structure is convexly arranged on the blade body; and defining the height dimension of the microstructure as h, wherein h is more than or equal to 0.1mm and less than or equal to 3 mm.

The invention also provides a food processor, which comprises a stirring cup assembly, wherein the stirring cup assembly comprises a crushing knife, and the crushing knife comprises a blade body and a microstructure; the micro structure is convexly arranged on the blade body; and defining the height dimension of the microstructure as h, wherein h is more than or equal to 0.1mm and less than or equal to 3 mm.

According to the technical scheme, the microstructure is arranged on the blade body in a protruding mode, so that the frictional resistance between the fluid and the wall surface of the microstructure can be reduced when the blade body moves in the fluid, and therefore the motion noise of the blade body in the fluid can be reduced, namely the problem of high noise is solved from a sound source. Furthermore, by defining the height dimension of the microstructure as h, wherein h is more than or equal to 0.1mm and less than or equal to 3mm, when a turbulent boundary layer of the fluid close to the blade body touches the microstructure, a vortex is easily formed around the turbulent boundary layer, so that the vortex rotates like an air bearing, the liquid is subjected to the action of rolling friction, the friction force between the fluid and the crushing knife is reduced, the anti-drag effect is greatly realized, and the noise is reduced on the one hand; on the other hand, the energy utilization rate is improved, and the load of a driving part (for example, the driving part can be a motor) for driving the crushing knife to rotate is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a stirring blade assembly according to the present invention;

FIG. 2 is a partial schematic view of a first embodiment of a crushing blade according to the invention;

FIG. 3 is a partial schematic view of a second embodiment of a crushing blade according to the invention;

FIG. 4 is a partial schematic view of a third embodiment of a crushing blade according to the invention;

FIG. 5 is a partial schematic view of a fourth embodiment of a crushing blade according to the invention;

FIG. 6 is a schematic view of a portion of a fifth embodiment of a crushing blade according to the invention;

FIG. 7 is a top view of an embodiment of the crushing blade with ribs according to the present invention;

FIG. 8 is a top view of another embodiment of the crushing blade of the present invention with ribs;

FIG. 9 is a top view of another embodiment of the crushing blade according to the present invention with ribs;

FIG. 10 is a top view of a further embodiment of the crush blade of the present invention having ribs thereon;

FIG. 11 is an enlarged view of a portion of FIG. 10 at A;

FIG. 12 is a schematic view of a plurality of ribs of an embodiment of the shredding knife of the present invention;

FIG. 13 is a schematic view of a plurality of ribs of another embodiment of the shredding knife of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Stirring knife assembly	110	Cutter shaft
120	Crushing knife	121	Blade body
				122	Micro-structure	122a	Rib
122b	Raised part	122c	Pit
				122d	Connecting edge		123	Connecting plate

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The present invention provides a crushing blade 120.

In an embodiment of the present invention, referring to fig. 2 to 13, the crushing blade 120 includes a blade body 121 and a microstructure 122; the microstructure 122 is convexly arranged on the blade body 121; the height dimension of the microstructure 122 is defined as h, wherein h is greater than or equal to 0.1mm and less than or equal to 3 mm.

The microstructure 122 refers to a protrusion or a depression smaller than the blade body 121, so that the surface of the blade body 121 is rough. When the crushing blade 120 moves in a fluid medium at a certain speed, an extremely thin fluid layer is prevented from being formed by the crushing blade 120, and by convexly arranging the microstructure 122 on the surface of the blade body 121, the viscous shear stress at the boundary layer can be reduced, and further the frictional resistance can be reduced, so that the noise generated when the crushing blade 120 rotates in the fluid can be reduced. Specifically, the microstructure 122 may be a rib 122a, a protrusion 122b, or a pit 122 c. Based on the property of the liquid stirred in the food processor, the height h of the microstructure 122 convexly disposed on the blade body 121 in the invention can be in a range of 0.1mm ≤ h ≤ 3mm, e.g., h can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3.0mm, etc., so that the height of the microstructure 122 cannot be too large or too small, and the friction of the microstructure can be reduced after the microstructure 122 contacts with the liquid, the friction is reduced to form a stable vortex, and the friction effect can be achieved, thereby reducing noise on the one hand; on the other hand, the energy utilization rate is improved, and the load of a driving member (for example, the driving member may be a motor) for driving the crushing blade 120 to rotate is reduced. When h is less than 0.1mm, the height of the microstructure 122 is too small, and the liquid is difficult to form a vortex around the microstructure 122, so that a good resistance reduction effect is difficult to achieve; when h > 3mm, the height of the microstructure 122 is too large, so that the liquid swirls in the microstructure 122 are not stable and cannot easily pass over the microstructure 122, but rather, the liquid swirls are a large obstacle, and the resistance between the liquid and the microstructure 122 is increased.

Of course, in other technical fields, i.e., when the crushing blade 120 is applied to devices other than food processors for whipping in other fluids, the height dimension of the microstructure 122 can be adaptively defined by specific application scenarios. In addition, regarding the arrangement of the microstructure 122, one, two or more microstructures 122 may be provided in the present invention, when at least two microstructures 122 are provided, the arrangement of the microstructures 122 may be in a regular shape or not, the arrangement of the microstructures 122 may have periodicity or not, and the shape of a single microstructure 122 may be in a regular shape or not, as long as the resistance reduction performance of the microstructure in motion in a fluid can be improved.

According to the technical scheme of the invention, the microstructure 122 is convexly arranged on the blade body 121, so that the friction resistance between the fluid and the wall surface of the microstructure 122 can be reduced when the blade body moves in the fluid, and the movement noise of the blade body in the fluid can be reduced, namely, the problem of high noise is improved from a sound source. Further, by defining the height dimension of the microstructure 122 as h, wherein h is more than or equal to 0.1mm and less than or equal to 3mm, when the fluid touches the microstructure 122, a vortex is easily formed around the microstructure, so that the vortex rotates like an air bearing, the liquid is subjected to rolling friction, the friction force between the fluid and the crushing knife 120 is reduced, the drag reduction effect is greatly realized, and the noise is reduced on the one hand; on the other hand, the energy utilization rate is improved, and the load of a driving member (for example, the driving member may be a motor) for driving the crushing blade 120 to rotate is reduced.

Further, referring to FIG. 12 and FIG. 13, based on the above-mentioned 0.1mm ≦ h ≦ 3mm, in the present embodiment, the width dimension of the microstructure 122 is defined as s, and 0 < s < 3 h.

It is understood that, after the height dimension of the microstructure 122 is determined, the range of the width dimension of the microstructure 122 can be determined according to the range of the ratio of the width dimension to the height dimension of the microstructure 122 in the present embodiment. When the height dimension of the microstructure 122 and the width dimension of the microstructure 122 are maintained at 0 < s < 3h, for example, s may be 0.1h, 0.2h, 0.3h, 0.4h, 0.5h, 0.6h, 0.7h, 0.8h, 0.9h, 1.0h, 1.1h, 1.2h, 1.3h, 1.4h, 1.5h, 1.6h, 1.7h, 1.8h, 1.9h, 2.0h, 2.1h, 2.2h, 2.3h, 2.4h, 2.5h, 2.6h, 2.7h, 2.8h, 2.9h, etc., the microstructure 122 has a good resistance-reducing effect, thereby reducing noise, improving energy utilization rate, and reducing a load of a driving member (for example, the driving member may be a motor) for driving the rotation of the milling cutter 120. It is understood that the microstructure 122 has a certain height, so the ratio of the height dimension to the width dimension of the microstructure 122 is greater than 0, and when s > 3h, the width dimension of the microstructure 122 is too large, which makes it difficult for the fluid to form a vortex around the microstructure 122 for a better drag reduction effect.

In order to study the effect of the width s of the microstructure 122 on the drag reduction effect, taking the operating conditions that 3 kinds of blade bodies 121 are provided with the microstructures 122 arranged in the same way and under the same shift (for example, the following experiment adopts the 8-shift working condition, that is, the rotation speed of the driving device for driving the crushing cutter 120 to rotate is provided with a plurality of shift stages, the working condition of the experiment is the working condition when the driving device adopts the 8-shift working condition), by changing the width s of the rib 122a without changing the height h (for example, h is 0.2mm in the following experiment) of the rib 122a and the distance w between two adjacent ribs 122a (for example, w is 0.3mm in the following experiment), three different widths s of the rib 122a are respectively designed (s is 0.2mm, s is 0.6mm, and s is 1.0mm in the following experiment), the ratio of the width s to the height h is respectively s/h is 1, s/h is 3 and s/h is 5. The 3 types of blade bodies 121 are compared with a whiteboard blade (i.e., a blade without any microstructure), where 1 is defined as s/h, 2 is defined as s/h, and 5 is defined as s/h, and 3 is defined as follows:

working conditions	Noise(s)	Rotational speed	Power of
				Number 1	82.72	238	832.93
Number 2	82.02	228	895.92
				No. 3	82.64	230	855.45
White board blade	82.41	232	860.75

As can be seen from the data in the above list, when the microstructure 122 of the crush blade 120 is s/h 3 and s/h 5, the rotation speed thereof has already started to be smaller than that of the white board blade, and therefore it is difficult to make the microstructure 122 have the drag reduction effect when s/h 3 and s/h 5.

The invention is not limited to the test under the working conditions, and s is less than 3h when the test is carried out under the working conditions; it should be noted, however, that other conditions (e.g., different fluid types or fluid velocities) may still be tested with a drag reduction effect at s/h of 4 or s/h of 5.

Further, referring to fig. 12 and fig. 13, based on that h is greater than or equal to 0.1mm and less than or equal to 3mm, in the embodiment, a plurality of micro structures 122 are disposed at intervals, and a distance between two adjacent micro structures 122 is defined as w, where w is greater than 0.2h and less than 3 h.

When a plurality of microstructures 122 are provided, a better drag reduction effect can be ensured under the combined action of the plurality of microstructures 122, so that on one hand, noise is reduced, on the other hand, the energy utilization rate is improved, and the load of a driving member (such as a motor) for driving the rotation of the crushing cutter 120 is reduced. When w is less than 0.2h, the distance between two adjacent microstructures 122 is too large, so that a stable vortex is difficult to form, rolling friction between the fluid and the crushing blade 120 is difficult to ensure, and a good drag reduction effect is difficult to realize. When w is greater than 3h, the distance between two adjacent microstructures 122 is too small, so that complete vortex cannot be formed between two adjacent microstructures 122, rolling friction cannot be formed between fluid and the crushing knife 120, the effect of reducing friction cannot be realized, and a better drag reduction effect cannot be realized.

Further, referring to fig. 2 to fig. 6, the microstructure 122 may be specifically a rib 122a, a protrusion 122b or a pit 122 c.

Specifically, the cross section of the rib 122a may be a rectangular, triangular rib 122a, or cylindrical, etc. The cross section of the rib 122a refers to a section perpendicular to the longitudinal direction of the rib 122 a. In addition, when a plurality of ribs 122a are provided, the longitudinal directions of the plurality of ribs 122a may be uniform or non-uniform. One or more of the convex portions 122b or the concave portions 122c may be provided; when a plurality of the projections 122b are provided, the shapes of the plurality of projections 122b may be the same or different; when a plurality of recesses 122c are provided, the plurality of recesses 122c may be identical in shape or different in shape.

Referring to fig. 10 and 11, when the microstructure 122 is a rib 122a, in the present embodiment, the crushing blade 120 further includes a connecting plate 123, the blade body 121 is polygonal, and the blade body 121 has a connecting edge 122d connected to the connecting plate 123; the connecting edge 122d is defined to have a first direction and a second direction which are opposite to each other and extend, an included angle formed between the length direction of the rib 122a and the connecting edge 122d in the first direction is α, a minimum included angle Q1 is formed between one diagonal line of the blade body 121 and the connecting edge 122d in the first direction, and a maximum included angle Q2 is formed between the other diagonal line of the blade body 121 and the connecting edge 122d in the first direction, wherein α is in a range: q1 is not less than alpha and not more than Q2.

Of course, in other embodiments, the longitudinal direction of the rib 122a forms an included angle α with the connecting edge 122d in the second direction, one diagonal line of the blade body 121 forms a minimum included angle Q1 with the connecting edge 122d in the second direction, and the other diagonal line of the blade body 121 forms a maximum included angle Q2 with the connecting edge 122d in the second direction, where α is in the range: q1 is not less than alpha and not more than Q2.

The following description will be made by taking an embodiment in which the rib 122a and the connecting edge 122d form an included angle α in the first direction, one diagonal line of the blade body 121 and the connecting edge 122d form a minimum included angle Q1 in the first direction, and the other diagonal line of the blade body 121 and the connecting edge 122d form a maximum included angle Q2 in the first direction. It is understood that the connecting plate 123 of the crushing blade 120 may be regular polygon or circular, and the blade body 121 may be provided with a plurality of blades, and the plurality of blade bodies 121 are radially distributed. When the blade body 121 is polygonal, it has a connecting edge 122d connected to the connecting plate 123, so as to realize a stable connection effect of the blade body 121 and the connecting plate 123. In the longitudinal direction of the connecting side 122d, it is specified that the direction from one end to the other end of the connecting side 122d is a first direction, and the opposite direction is a second direction. It can be understood that, when the crushing blade 120 rotates in the fluid, the flow velocity direction of the fluid agitated by one of the blade bodies 121 is approximately parallel to the connecting edge 122d of the blade body 121. Therefore, each diagonal line of the blade body 121 can ensure an included angle different from zero with the connecting edge 122d in the first direction (or the connecting edge 122d) by taking the diagonal line of the blade body 121 as a reference. The included angle is greater or smaller, wherein the minimum included angle is Q1, the maximum included angle is Q2, and when the included angle α formed between the length direction of the rib 122a and the connecting edge 122d in the first direction is within the range: when the Q1 is not less than α and not more than Q2, it is ensured that the rib 122a and the connecting edge 122d are not parallel, and further the length direction of the rib 122a is not parallel to the fluid flow velocity direction, so that most of the fluid impacts the rib 122a and forms stable vortices around the rib 122a, and these vortices are blocked by the rib 122a and then stay in a suitable space and rotate like an air bearing, thereby receiving the rolling friction effect to achieve a good drag reduction effect, thereby achieving the effect of reducing noise when the crushing knife 120 rotates in the fluid, on the other hand, also improving the energy utilization rate, and reducing the load of a driving member (for example, the driving member may be a motor) for driving the crushing knife 120 to rotate. When α is not within the above range, the length extending direction of the rib 122a is easily approximately parallel to the length direction of the connecting edge 122d, i.e. the length direction of the rib 122a is approximately parallel to the velocity direction of the fluid, so that most of the fluid is difficult to hit the rib 122a and form a vortex, but most of the fluid slides along the length direction of the rib 122a, and thus the fluid is difficult to be subjected to rolling friction at the rib 122a, and thus the fluid is difficult to have a good drag reduction effect.

Of course, the invention is not limited to the blade body 121 being polygonal, and in other embodiments, the blade body 121 may also be arc-shaped or have other shapes, so long as the length direction of the rib 122a is prevented from being non-parallel to the velocity direction of the fluid touching the rib 122a, and thus a better drag reduction effect can be achieved.

In order to investigate the effect of the ribs 122a of different arrangement directions on the drag reduction effect, the following 3 kinds of differently arranged rectangular ribs were compared with the whiteboard blade, in which the length direction of each blade body 121 extended radially outward along the stirring circumference of the crushing blade 120. The crushing blade 120 having a rectangular rib parallel to the length direction of each blade body 121 on each blade body 121 is defined as a longitudinal blade; each crushing blade 120 with rectangular ribs perpendicular to the length direction of the blade body 121 on each blade body 121 is a horizontal blade; the crushing blades 120, in which half of the blade bodies 121 have rectangular ribs parallel to the longitudinal direction of the blade bodies 121, and the other half of the blade bodies 121 have rectangular ribs perpendicular to the longitudinal direction of the blade bodies 121, are longitudinal and transverse blades. In addition, in the following experiment, the height h and the width s of 3 different arranged rectangular ribs are both 0.1mm, and the distance w between two adjacent ribs 122a in each arranged rectangular rib is 0.2 mm. The experimental data are as follows:

working conditions	Noise(s)	Rotational speed	Power of	Power to speed ratio	Noise to rotation ratio
						Longitudinal knife 8 grades	84.85	264	703	2.66	0.32
Horizontal knife 8 steps	84.18	252	752	2.98	0.33
						Longitudinal and transverse knife 8 grades	81.66	229	884	3.86	0.36
White board blade 8 shelves	83.59	223	940	4.22	0.37
						Longitudinal knife 6 shelves	81.38	227	626	2.76	0.36
6-step transverse cutter	81.15	216	664	3.07	0.38
						Longitudinal and transverse knife 6 steps	81.81	196	773	3.94	0.42
Whiteboard blade 6 shelves	81.72	189	791	4.19	0.43

It can be understood that the driving device for driving the crushing cutter 120 to rotate has different gear speeds, and the "8 th gear" in the above table means that the rotating speed of the driving device is selected to be the rotating speed corresponding to the 8 th gear; "6 th gear" means that the rotation speed of the driving device is selected to be the rotation speed corresponding to 6 th gear, wherein the larger the gear is, the higher the rotation speed is. The power-to-rotation ratio in the above table is the power required per unit rotation speed, and a smaller value of the power-to-rotation ratio indicates a better resistance reduction effect of the crushing blade 120. As can be seen from the data in the above list, when the crushing blades 120 are longitudinal blades, the drag reduction effect is the best, and then when the crushing blades 120 are transverse blades and the crushing blades 120 are transverse longitudinal blades, respectively, the better drag reduction effect is the worst case when all the crushing blades 120 are white blades.

The noise rotation speed ratio is the magnitude of noise generated per rotation speed, and a smaller value of the noise rotation speed ratio indicates a better noise reduction effect of the crushing blade 120. As can be seen from the data in the above list, when the crushing blade 120 is a vertical blade, the noise reduction effect is the best, and when the crushing blade 120 is a horizontal blade and the crushing blade 120 is a horizontal vertical blade, which are the better noise reduction effects, respectively, the noise reduction effect is the worst when all the crushing blades 120 are white blades.

Based on the above experimental data, as shown in fig. 8, in the present embodiment, in order to have a good drag reduction effect, the blade body 121 is elongated, and the longitudinal direction of the rib 122a extends in the longitudinal direction of the blade body 121.

With such arrangement, when the length direction of the blade body 121 extends along the radial outward direction of the circumferential surface of the crushing cutter 120, the length direction of the rib 122a is approximately perpendicular to the flow velocity direction of the fluid touching the rib 122a, so that the fluid is easy to form a vortex around the rib 122a, and a roller effect of an included angle is formed, thereby being more beneficial to having a better drag reduction effect when the fluid flows through the rib 122a, and greatly reducing the noise of the fluid when the fluid passes through the crushing cutter 120 on the one hand; on the other hand, the energy utilization rate is improved, and the load of a driving member (for example, the driving member may be a motor) for driving the crushing blade 120 to rotate is reduced.

Specifically, when a plurality of blade bodies 121 are provided on the same crushing blade 120, the length direction of the rib 122a on each blade body 121 extends along the length direction of the blade body 121.

Of course, referring to fig. 7 to 10, in other embodiments, when a plurality of blade bodies 121 are disposed on the same crushing blade 120, the protruding rib 122a of one portion of the blade bodies 121 extends along the length direction of the blade bodies 121, and the protruding rib 122a of the other portion of the blade bodies 121 extends along the width direction of the blade bodies 121. Alternatively, when a plurality of blade bodies 121 are provided on the same crushing blade 120, the length direction of the rib 122a of each blade body 121 extends along the width direction of the blade body 121. Alternatively, when a plurality of blade bodies 121 are provided on the same crushing blade 120, a rib 122a is convexly provided on a part of the blade bodies 121, and the longitudinal extending direction of the rib 122a may extend along the longitudinal direction of the blade body 121 on which the rib 122a is provided, or may extend along the width direction of the blade body 121 on which the rib 122a is provided; the other part of the blade body 121 may not be provided with the rib 122 a. Or, when a plurality of blade bodies 121 are disposed on the same crushing blade 120, the extending direction of the ribs 122a protruding from some or all of the blade bodies 121 forms an included angle with the length direction and the width direction of the blade bodies 121. In addition, it can be understood that when a plurality of ribs 122a are disposed on the same blade body 121, the extending directions of different ribs 122a may be the same or different; the cross-sectional shapes of the plurality of ribs 122a may be the same or different. Similarly, when a plurality of blade bodies 121 are disposed on the same crushing blade 120, a protrusion 122b and/or a recess 122c may be protruded on the same blade body 121, and the plurality of protrusions 122b of the same blade body 121 may have the same or different shapes; the plurality of recesses 122c of the same blade body 121 are identical or different in shape. In addition, the same blade body 121 may be provided with a rib 122a, a protrusion 122b, or a recess 122 c.

The present invention further provides a stirring blade assembly 100, wherein the stirring blade assembly 100 includes a crushing blade 120, the specific structure of the crushing blade 120 refers to the above embodiments, and since the stirring blade assembly 100 adopts all technical solutions of all the above embodiments, at least all beneficial effects brought by the technical solutions of the above embodiments are provided, and no further description is given here.

The present invention further provides a food processor, which includes a stirring blade assembly 100, and the specific structure of the stirring blade assembly 100 refers to the above embodiments, and since the food processor adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and are not repeated herein.

Further, the food processor also comprises a base assembly, the base assembly comprises a shell and a motor arranged in the shell, a cup body assembly is arranged on the base assembly, the cup body assembly comprises a cup body and a stirring knife assembly 100 arranged in the cup body, and the stirring knife assembly 100 comprises a knife shaft 110 and a crushing knife 120 arranged on the knife shaft 110; the motor is connected with the cutter shaft 110 in a transmission way, so as to drive the crushing cutter 120 to rotate, and further realize the beating effect on the food in the cup body.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A comminuting knife for rotation within a fluid, comprising:

a blade body; and

the micro structure is convexly arranged on the blade body; defining the height dimension of the microstructure as h, wherein h is more than or equal to 0.1mm and less than or equal to 3 mm;

the blade body is polygonal and is provided with a connecting edge connected with the connecting plate;

defining the connecting edge to have a first direction and a second direction which are arranged to be opposite to each other in an extending manner;

the included angle formed between the length direction of the rib and the connecting edge in the first direction is alpha, the minimum included angle Q1 is formed between one diagonal line of the blade body and the connecting edge in the first direction, the maximum included angle Q2 is formed between the other diagonal line of the blade body and the connecting edge in the first direction,

wherein the range of α is: q1 is not less than alpha and not more than Q2;

or the included angle formed by the length direction of the rib and the connecting edge in the second direction is alpha, the minimum included angle Q1 is formed between one diagonal line of the blade body and the connecting edge in the second direction, the maximum included angle Q2 is formed between the other diagonal line of the blade body and the connecting edge in the second direction,

wherein the range of α is: q1 is not less than alpha and not more than Q2.

2. The comminuting knife of claim 1, wherein the width of the microstructure is defined as s, and 0 < s < 3 h.

3. The shredding knife of claim 1, wherein said microstructures are provided in a plurality, and a plurality of said microstructures are spaced apart to define a spacing between adjacent ones of said microstructures of w, 0.2h < w < 3 h.

4. A crushing blade according to claim 1, wherein the blade body has an elongated shape, and a longitudinal direction of the rib extends in a longitudinal direction of the blade body.

5. The crushing blade as claimed in claim 1, wherein the cross-sectional shape of the rib is rectangular, triangular or cylindrical.

6. The crushing cutter as claimed in claim 1, wherein the cross-sectional shapes of the plurality of ribs of the same blade body are the same or different; the shapes of a plurality of convex parts of the same blade body are the same or different; the shapes of a plurality of pits of the same blade body are the same or different.

7. A stirring blade assembly comprising a comminuting blade according to any of claims 1 to 6.

8. A food processor comprising the blender blade assembly of claim 7.