CN220141486U - Noise-reducing food processor - Google Patents

Abstract

The utility model discloses a noise-reducing food processor, which comprises a crushing cup, wherein a crushing cutter assembly is arranged in the crushing cup, the crushing cutter assembly comprises a cutter shaft and a crushing cutter arranged on the cutter shaft, the crushing cutter comprises a first crushing cutter, the first crushing cutter comprises a plurality of first blades, the first blades are provided with cutting edges and cutter backs opposite to the cutting edges, the cutting edges face the rotating direction of the crushing cutter, and the cutter backs of the first blades are concavely provided with at least one groove. According to the food processor, the knife back of the first blade is optimized to form at least one groove, when the first blade rotates to cut, fluid flows to the knife back of the first blade, the groove can pass through the fluid first, so that vacuum is formed at the position, noise caused by release of the fluid can be reduced, noise explosion aggregation caused by release of the fluid trailing in the same direction can be avoided based on the shape of the knife back of the first blade, and therefore working noise of the processor is effectively reduced.

Description

Noise-reducing food processor

Technical Field

The utility model relates to the field of food processors, in particular to a noise-reducing food processor.

Background

The food processor generally comprises a main machine and a cup body, wherein a motor is arranged in the main machine, a crushing cutter assembly is arranged in the cup body, and the motor drives the crushing cutter assembly to rotate so as to cut and crush food materials. However, a great part of the working noise of the current food processor is derived from the interaction of the material and the blade, the vortex formed by the material in the cup body, the impact of the material and the inner wall of the cup body, the vibration of the fluid in all directions and the like, which are related to the modeling design of the crushing cutter assembly, and how to optimize the shape, parameters and the like of the crushing cutter assembly becomes one of key means for noise reduction.

In some existing schemes, although the structure of the cutter assembly is optimized, for example, different blades are combined together, so that various blades are limited by different bending angles to exert different functions and cooperate with each other, or the cutting length is prolonged, the sharpness of the cutter is improved by optimizing the shape of the cutting edge, and the like, the schemes are all used for improving the stirring and crushing effects of the cutter on food materials, but neglecting the noise problem caused by the cutter work, and particularly, when some cutters are improved, the crushing effect can be effectively improved, but the problem of noise increase is possibly brought. That is, the prior art still lacks research on the relation between cutter optimization and noise, so that the service performance of the product is required to be improved.

Disclosure of Invention

In order to solve the technical problems that in the working process of a crushing cutter in the prior art, the noise generated when the crushing cutter acts with materials and fluid is large, and the noise reduction performance is improved by improving the cutter back, the utility model provides a noise reduction food processor, which is used for optimizing the modeling and design of the crushing cutter, particularly optimizing the design form of the cutter back, and effectively reducing the working noise of the machine while improving the crushing effect of the materials.

The utility model discloses a noise-reducing food processor, which comprises a crushing cup, wherein a crushing cutter assembly is arranged in the crushing cup, the crushing cutter assembly comprises a cutter shaft and a crushing cutter arranged on the cutter shaft, the crushing cutter comprises a first crushing cutter, the first crushing cutter comprises a plurality of first blades, each first blade is provided with a cutting edge and a cutter back opposite to the cutting edge, the cutting edge faces the rotating direction of the crushing cutter, and the cutter back of each first blade is concavely provided with at least one groove.

The noise-reducing food processor of the utility model also has the following additional technical characteristics:

the back of the first blade is provided with a plurality of grooves and a plurality of protrusions, and the grooves and the protrusions are alternately distributed.

The cutting edge of the first blade is arc-shaped along the radial direction of the first crushing cutter and is provided with a plurality of saw teeth.

The width of the cutting edge of the first blade is 4.0 mm-5.0 mm; and/or the saw teeth comprise convex tooth parts and concave tooth parts, and the convex tooth parts and the concave tooth parts are alternately arranged.

The first blades include first upper blades extending obliquely upward and first lower blades extending obliquely downward, and the first upper blades and the first lower blades are alternately arranged.

The included angle formed by the first upper blade and the horizontal plane is 4-7 degrees; and/or the included angle formed by the first lower blade and the horizontal plane is 18-22 degrees.

The radius of the circle where the arc of the cutting edge of the first blade is located is R, and the length of the first blade is L, wherein R is less than or equal to 2L.

The first crushing cutter comprises a first mounting part, a plurality of first blades are arranged at intervals along the circumferential edge of the first mounting part, and the radius of an inscribed circle of the area where the first mounting part is positioned is R ₁ The adjacent two first blades are connected through an arc, and the radius of a circle where the arc between the adjacent two first blades is positioned is R ₂ Wherein 1/3R ₁ ≤R ₂ ≤1/2R ₁ 。

The crushing cutter further comprises a second crushing cutter, the second crushing cutter is arranged above the first crushing cutter, the second crushing cutter comprises a plurality of second blades, the second blades extend obliquely upwards, and an included angle formed by the second blades and the horizontal plane is 50-65 degrees.

The first crushing cutter comprises a first mounting part, a plurality of first blades are arranged along the circumferential edge of the first mounting part at intervals, the second crushing cutter comprises a second mounting part, a plurality of second blades are arranged along the circumferential edge of the second mounting part at intervals, the first mounting part is provided with a first through hole, the second mounting part is provided with a second through hole, the first through hole and the second through hole are coaxially arranged with the cutter shaft, and the shapes of the first through hole and the second through hole are non-circular.

By adopting the technical scheme, the utility model has the following beneficial effects:

1. according to the noise-reducing food processor, the knife back of the first blade is optimized to form at least one groove structure, when the first blade rotates to cut, fluid flows to the knife back of the first blade, the groove can pass through the fluid first, so that vacuum is formed at the position, noise released by the fluid can be reduced, and noise explosion aggregation caused by release of the fluid trailing in the same direction can be avoided based on the shape of the knife back of the first blade, so that working noise of the processor is effectively reduced.

Specifically, the grooves are formed by recessing in the direction facing the rotation direction of the crushing cutter, so that after fluid flows through the cutting edge of the first cutter blade, the fluid flows to the cutter back and preferentially passes through the grooves, and the vacuum cavity is formed at the grooves, so that the fluid tailing does not pass through the cutter back at the same time, and discontinuous release is formed at the cutter back, so that the noise of concentrated blasting of the fluid is effectively reduced.

2. As a preferred embodiment, the back of the first blade is provided with a plurality of grooves and a plurality of protrusions, and the grooves and the protrusions are alternately arranged; therefore, the back of the first blade can be wavy, the fluid flowing to the back of the first blade can be released in different directions by utilizing the plurality of discontinuous grooves, and the noise of fluid release can be reduced to a greater extent by forming a plurality of vacuum cavities at the positions of the plurality of grooves.

3. As a preferred embodiment, the cutting edge of the first blade is arc-shaped in the radial direction of the first crushing blade and is provided with a plurality of saw teeth; through optimizing the cutting edge of first blade, its arc structure can increase the area of contact with edible material to can improve crushing efficiency, and the sawtooth is then favorable to promoting crushing effect, for example improves crushing ice effect etc..

As a preferred example of the present embodiment, the width of the edge of the first blade is 4.0mm to 5.0mm; by optimizing the blade size of the first blade, the sharpness thereof can be improved, and the formation of the wedge-shaped blade helps to break open the fluid so that the fluid is dispersed and released toward the back of the blade, reducing noise.

As a further preferable example of the present embodiment, the serrations include convex tooth portions and concave tooth portions, which are alternately arranged; through setting up protruding tooth portion and the concave tooth portion of arranging in turn, the effect of breaking the water to the impact is dispersed, compares in neat blade noise reduction effect better to further reduce machine operating noise.

4. As a preferred embodiment, the first blade includes a first upper blade and a first lower blade, the first upper blade extending obliquely upward and the first lower blade extending obliquely downward, the first upper blade and the first lower blade being alternately arranged; the functions of the first blade can be enriched by adopting the combination of the first upper blade and the first lower blade, for example, the first upper blade can play roles of balancing liquid flow and upwards cleaning the cup body by pumping water, and the first lower blade can strengthen the crushing effect on the lower range of the cup body and reduce the crushing blind area of the lower part.

As a preferred embodiment of the present embodiment, an included angle formed by the first upper blade and the horizontal plane is 4 ° to 7 °; in this angular range, the flow smoothing effect can be optimized and the height of the liquid lifting can be moderately controlled to control the fluid noise.

As a preferable example of the present embodiment, an included angle formed by the first lower blade and the horizontal plane is 18 ° to 22 °; in this angular range, the crushing power can be optimized.

5. As a preferred embodiment, the radius of the circle where the circular arc of the blade edge of the first blade is located is R, and the length of the first blade is L, wherein L.ltoreq.R.ltoreq.2L; the longer the blade length under the same crushing effect, the larger the resistance to be overcome, the larger the power and the larger the noise are in the working condition, and the shorter the blade length is, the lower the crushing efficiency is; by optimizing the blade size of the first blade, the working noise is reduced as much as possible while the first blade has certain crushing efficiency.

6. As a preferred embodiment, the crushing cutter further comprises a second crushing cutter, the second crushing cutter is arranged above the first crushing cutter, the second crushing cutter comprises a plurality of second blades, the second blades extend obliquely upwards, and an included angle formed by the second blades and a horizontal plane is 50-65 degrees; through optimizing the extension angle of second blade, on the one hand can avoid its and the first blade mutual interference of below, on the other hand has guaranteed the crushing effect to the material, can reduce the crushing blind area in upper portion and middle part, and the balanced sword that is the first sword of smashing can avoid liquid stream idle beating to produce simultaneously and pause the noise.

7. As a preferred embodiment, the first crushing blade comprises a first mounting part, a plurality of first blades are arranged at intervals along the circumferential edge of the first mounting part, and the radius of an inscribed circle of the area where the first mounting part is arranged is R ₁ The adjacent two first blades are connected through an arc, and the radius of a circle where the arc between the adjacent two first blades is positioned is R ₂ Wherein 1/3R ₁ ≤R ₂ ≤1/2R ₁ The method comprises the steps of carrying out a first treatment on the surface of the Thus, R can be avoided ₂ When the liquid is whipped excessively, intermittent idle whipping and sound pause disorder are easy to occur, and meanwhile, R can be avoided ₂ When the size is too small, the total area of the cutter seat (namely the first installation part) is large, and the beating liquid flow is easy to vibrate up and down to push up noise.

8. As a preferred embodiment, the first crushing cutter comprises a first mounting part, a plurality of first blades are arranged at intervals along the circumferential edge of the first mounting part, the second crushing cutter comprises a second mounting part, a plurality of second blades are arranged at intervals along the circumferential edge of the second mounting part, the first mounting part is provided with a first through hole, the second mounting part is provided with a second through hole, the first through hole and the second through hole are coaxially arranged with the cutter shaft, and the shapes of the first through hole and the second through hole are non-circular; therefore, the concentricity of the cutter shaft, the first mounting part and the second mounting part can be optimized to ensure that the cutter shaft drives the first crushing cutter and the second crushing cutter to stably run, the first crushing cutter and/or the second crushing cutter can be prevented from being in a pause and contusion to increase working noise, and the non-circular through hole structure is arranged, so that the cutter shaft is ensured to drive the first crushing cutter and the second crushing cutter to synchronously move, the relative movement is avoided, and the use reliability of a product is influenced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a schematic view showing a structure of a crushing blade assembly according to an embodiment of the present utility model.

Fig. 2 is a schematic structural view of a first crushing blade according to an embodiment of the present utility model.

Fig. 3 is a schematic view showing the structure of a first crushing blade according to another embodiment of the present utility model.

Fig. 4 is a schematic view illustrating the included angle of the first bottom blade according to an embodiment of the present utility model.

Fig. 5 is a schematic view illustrating the included angle of the first upper blade according to an embodiment of the present utility model.

Fig. 6 is a schematic structural view of a second crushing blade according to an embodiment of the present utility model.

Fig. 7 is a schematic view of a blade edge sizing of a first blade in accordance with one embodiment of the present utility model.

Fig. 8 is a schematic diagram of the design of the arc between two adjacent first blades according to an embodiment of the present utility model.

Fig. 9 is a schematic diagram of the rotation operation of the first blade according to an embodiment of the present utility model.

Fig. 10 is a schematic diagram illustrating an arrangement of a first lower blade and a second blade according to an embodiment of the present utility model.

Reference numerals:

10-arbor, 11-first crushing sword, 12-second crushing sword, 13-first blade, 14-second blade, 131-recess, 132-arch, 133-convex tooth portion, 134-concave tooth portion, 13 a-first upper blade, 13 b-first lower blade, 111-first mounting portion, 112-first through-hole, 121-second mounting portion, 122-second through-hole.

Detailed Description

In order to more clearly illustrate the general inventive concept, reference will be made in the following detailed description, by way of example, to the accompanying drawings.

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than as described herein, and therefore the scope of the present utility model is not limited by the specific embodiments disclosed below.

In addition, in the description of the present utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. However, it is noted that direct connection indicates that two connected bodies are not connected through a transition structure, but are connected through a connection structure to form a whole. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1 to 10, the present utility model provides a noise-reducing food processor, comprising a crushing cup, wherein a crushing cutter assembly is arranged in the crushing cup, the crushing cutter assembly comprises a cutter shaft 10 and a crushing cutter arranged on the cutter shaft 10, the crushing cutter comprises a first crushing cutter 11, the first crushing cutter 11 comprises a plurality of first blades 13, the first blades 13 are provided with blades and a cutter back opposite to the blades, the blades face the rotation direction of the crushing cutter, and the cutter back of the first blades 13 is concavely provided with at least one groove 131.

According to the utility model, the knife back of the first blade 13 is optimized to form at least one groove 131 structure, when the first blade 13 rotates to cut, the groove 131 can pass through the fluid when the fluid flows to the knife back of the first blade 13, so that vacuum is formed at the position, noise caused by releasing the fluid can be reduced, and noise explosion aggregation caused by releasing the fluid trailing in the same direction can be avoided based on the shape of the knife back of the first blade 13, so that the working noise of a machine is effectively reduced.

It will be appreciated that the number of the grooves 131 may be one or more, and may be set according to actual requirements. For example, fig. 2 shows an example in which two grooves 131 are provided; fig. 3 shows an example in which four grooves 131 are provided. When a plurality of grooves 131 are provided, the plurality of grooves 131 are arranged at intervals. Adjacent two of the grooves 131 may be connected by a protrusion 132, whereby the back of the first blade 13 may be waved when a plurality of grooves 131 are provided. The fluid flowing to the back of the first blade 13 can be released in different directions by the plurality of discontinuous grooves 131, and noise of the fluid release can be reduced to a greater extent by forming a plurality of vacuum chambers at the positions of the plurality of grooves 131.

The width of the groove 131 can be set according to practical requirements, and the utility model is not required.

As a preferred embodiment of the present utility model, the blade edge of the first blade 13 is curved in the radial direction of the first crushing blade 11 and is provided with a plurality of serrations.

Specifically, as shown in fig. 2, the blade edge of the first blade 13 is opposite to the back of the knife, and by setting the arc blade and setting a plurality of saw teeth, the total cutting length can be effectively increased, and the crushing efficiency can be optimized. And the saw teeth are beneficial to cutting crushed ice, so that the ice crushing effect can be optimized.

It will be appreciated that in other examples the edge of the first blade 13 may also be rectilinear to simplify its manufacture and enrich its shape.

Preferably, the width of the edge of the first blade 13 is 4.0mm to 5.0mm. By optimizing the blade size of the first blade 13, the sharpness thereof can be improved, and the formation of a wedge-shaped blade helps to break open the fluid so that the fluid is dispersed and released toward the back of the knife, reducing noise.

Preferably, the serrations include convex tooth portions 133 and concave tooth portions 134, and the convex tooth portions 133 and the concave tooth portions 134 are alternately arranged. Through setting up protruding tooth portion 133 and the concave tooth portion 134 of arranging in turn, the effect to the broken water of impact is dispersed, compares in neat blade noise reduction effect better to further reduce machine operational noise. The width of the concave teeth 134 is, for example, 0.8-2mm, so as to reduce noise of cutting food materials or fluid while optimizing the pulverizing effect.

As a preferred embodiment of the present utility model, the first blades 13 include first upper blades 13a and first lower blades 13b, the first upper blades 13a extending obliquely upward, the first lower blades 13b extending obliquely downward, the first upper blades 13a and the first lower blades 13b being alternately arranged.

By adopting the combination of the first upper blade 13a and the first lower blade 13b, the functions of the first blade 13 can be enriched, for example, the first upper blade 13a can play a role in balancing liquid flow and lifting water to clean the cup body upwards, and the first lower blade 13b can strengthen the crushing effect on the lower range of the cup body and reduce the crushing blind area of the lower part. Preferably, as shown in fig. 1, the first upper blade 13a is provided in two and opposite to each other. The first lower blades 13b are provided in two and are disposed opposite to each other.

Further preferably, as shown in fig. 5, the first upper blade 13a forms an angle β with the horizontal plane, and β ranges from 4 ° to 7 °. Wherein the greater the angle beta, the higher the upward water lifting height when whipping, and the smaller the angle beta, the more smooth the flow.

Further, as shown in fig. 4, the first lower blade 13b forms an angle α with the horizontal plane, and α ranges from 18 ° to 22 °. Wherein, the larger the angle alpha, the larger the power of whipping, and the smaller the angle alpha, the worse the crushing. And the edge of the first lower blade 13b breaks water at a high speed and then presses the water downwards, so that the outward transmission of the noise of the excited water spray can be prevented. And by properly combining the lower angle alpha and the upper angle beta, a stable liquid flow is formed which presses the turbulent vortex during stirring.

On the basis of the scheme, as shown in fig. 7, the radius of the circle where the arc of the edge of the first blade 13 is located is R, and the length of the first blade 13 is L, wherein L is less than or equal to R is less than or equal to 2L.

The longer the blade length under the same crushing effect, the larger the resistance to be overcome, the larger the power and the larger the noise are in the working condition, and the shorter the blade length is, the lower the crushing efficiency is; by optimizing the blade edge size of the first blade 13, the working noise is reduced as much as possible while the crushing efficiency is improved.

As a preferred embodiment of the present utility model, the crushing blade further comprises a second crushing blade 12, the second crushing blade 12 is disposed above the first crushing blade 11, the second crushing blade 12 comprises a plurality of second blades 14, the second blades 14 extend obliquely upward, and an included angle formed by the second blades 14 and a horizontal plane is 50 ° to 65 °.

The utility model adopts the combination of the first crushing cutter 11 and the second crushing cutter 12, improves the crushing effect of materials, and simultaneously can effectively reduce the noise brought by the crushing cutters in the working process, thereby optimizing the working noise of the machine. The first blade 13 is a main blade and is used for crushing lower or middle-lower materials, and noise reduction can be realized in the process of breaking fluid. The second blade 14 takes care of crushing the upper or upper middle material and mainly cuts and crushes the larger size material. The first blade 13 and the second blade 14 can be combined to achieve the effect of layered crushing so as to ensure the crushing effect of the food materials.

Through optimizing the extension angle of second blade 14, on the one hand can avoid its and the first blade 13 mutual interference of below, on the other hand has guaranteed the crushing effect to the material, can reduce the crushing blind area in upper portion and middle part, and the balanced sword that is used as first crushing sword 11 simultaneously can avoid liquid stream idle beating to produce and pause the noise.

As shown in fig. 6, the second blades 14 are provided in two, for example, and are disposed opposite to each other. The width of the edge of the second blade 14, which may extend for example to the position of the holder platform, is for example 3-4mm, the main function of the second blade 14 being to handle larger sizes such as bulk material like sweet potato, fruit etc. providing an optimised cutting effect.

As a preferred embodiment of the present utility model, as shown in fig. 8, the first crushing blade 11 includes a first mounting portion 111, a plurality of first blades 13 are arranged at intervals along the circumferential edge of the first mounting portion 111, and the radius of an inscribed circle of the region where the first mounting portion 111 is located is R ₁ The adjacent two first blades 13 are connected by an arc, and the radius of the circle where the arc between the adjacent two first blades 13 is positioned is R ₂ Wherein 1/3R ₁ ≤R ₂ ≤1/2R ₁ 。

Thus, R can be avoided ₂ When the liquid is whipped excessively, intermittent idle whipping and sound pause disorder are easy to occur, and meanwhile, R can be avoided ₂ If too small, the overall surface of the tool holder (i.e. the first mounting part)The product is large, and the water beating flow is easy to vibrate up and down to push up noise when the water beating flow is whipped.

As a preferred embodiment of the present utility model, the first crushing blade 11 includes a first mounting portion 111, the plurality of first blades 13 are arranged at intervals along a circumferential edge of the first mounting portion 111, the second crushing blade 12 includes a second mounting portion 121, the plurality of second blades 14 are arranged at intervals along a circumferential edge of the second mounting portion 121, the first mounting portion 111 is provided with a first through hole 112, the second mounting portion 121 is provided with a second through hole 122, the first through hole 112 and the second through hole 122 are coaxially arranged with the cutter shaft 10, and the first through hole 112 and the second through hole 122 are each non-circular in shape.

The concentricity of the cutter shaft 10, the first mounting part 111 and the second mounting part 121 is optimized, so that the cutter shaft 10 can drive the first crushing cutter 11 and the second crushing cutter 12 to stably run, the occurrence of the pause of the first crushing cutter 11 and/or the second crushing cutter 12 can be avoided, the working noise is increased, and the arrangement of a non-circular through hole structure ensures that the cutter shaft 10 drives the first crushing cutter 11 and the second crushing cutter 12 to synchronously move, the occurrence of relative movement is avoided, and the use reliability of products is influenced.

As shown in fig. 2 and 6, the first through hole 112 and the second through hole 122 are, for example, in-line holes, and the corresponding cutter shaft 10 has in-line mounting positions to match and mount the first crushing cutter 11 and the second crushing cutter 12. The first and second through holes 112 and 122 may also be other shapes, such as D-shaped, for which the present utility model is not limited. Further, with respect to the installation of the shredder blade assembly, the shredder cup bottom is provided with an installation boss, for example, with an internal shaft seal and ball bearings, and if such an installation boss is not provided, the blade is easily free to run in when agitating the liquid stream, particularly the more diluted liquid stream. The crushing blade assembly comprises, for example, a blade holder, which is mounted to the mounting boss by the blade holder. Further, the cutter shaft 10 is arranged at the bottom of the crushing cup in a penetrating way, a first crushing cutter 11 and a second crushing cutter 12 are arranged at the upper end of the cutter shaft 10, and a thread structure is arranged at the lower end of the cutter shaft 10 and used for installing a clutch. Preferably, as shown in fig. 1, the first blades 13 are provided with four, the second blades 14 are provided with two, four first blades 13 are positioned below, and two second blades 14 are positioned above, and by combining the two sets of blades, the crushing effect is improved and the working noise is reduced.

As shown in fig. 9, during the high-speed rotation of the first blade 13 toward the blade edge, the liquid flow is broken and forms a liquid flow tail along the blade back due to the wedge angle of the front blade, the greater the linear speed (v=ωr), the longer the tail, the wave shape design of the blade back can release the liquid flow tail in different directions instead of being released straight in the same direction, and the concentrated noise of tailing and crushing can be effectively reduced.

As shown in fig. 10, an included angle is formed between the first lower blade 13b and the second blade 14, for example, the included angle is γ, and γ may be less than or equal to 15, so that large noise caused by large overlapping power between the two blades can be avoided, thereby further reducing the working noise of the machine.

The technical solution protected by the present utility model is not limited to the above embodiments, and it should be noted that, the combination of the technical solution of any one embodiment with the technical solution of the other embodiment or embodiments is within the scope of the present utility model. While the utility model has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.

Claims (10)

1. The noise-reducing food processor comprises a crushing cup, wherein a crushing cutter assembly is arranged in the crushing cup and comprises a cutter shaft and a crushing cutter arranged on the cutter shaft, and is characterized in that,

the crushing cutter comprises a first crushing cutter, the first crushing cutter comprises a plurality of first blades, the first blades are provided with blades and cutter backs opposite to the blades, the blades face the rotation direction of the crushing cutter, and the cutter backs of the first blades are sunken to be provided with at least one groove.

2. A noise reducing food processor according to claim 1, wherein,

the back of the first blade is provided with a plurality of grooves and a plurality of protrusions, and the grooves and the protrusions are alternately distributed.

3. A noise reducing food processor according to claim 1, wherein,

the cutting edge of the first blade is arc-shaped along the radial direction of the first crushing cutter and is provided with a plurality of saw teeth.

4. A noise reducing food processor according to claim 3, wherein,

the width of the cutting edge of the first blade is 4.0 mm-5.0 mm; and/or

The saw teeth comprise convex tooth parts and concave tooth parts, and the convex tooth parts and the concave tooth parts are alternately arranged.

5. A noise reducing food processor according to claim 1, wherein,

the first blades include first upper blades extending obliquely upward and first lower blades extending obliquely downward, and the first upper blades and the first lower blades are alternately arranged.

6. A noise reducing food processor according to claim 5, wherein,

the included angle formed by the first upper blade and the horizontal plane is 4-7 degrees; and/or

The included angle formed by the first lower blade and the horizontal plane is 18-22 degrees.

7. A noise reducing food processor according to claim 3, wherein,

the radius of the circle where the arc of the cutting edge of the first blade is located is R, and the length of the first blade is L, wherein R is less than or equal to 2L.

8. A noise reducing food processor according to claim 1, wherein,

the first crushing cutter comprises a first mounting part, a plurality of first blades are arranged at intervals along the circumferential edge of the first mounting part, and the radius of an inscribed circle of the area where the first mounting part is positioned is R ₁ The adjacent two first blades are connected through an arc, and the radius of a circle where the arc between the adjacent two first blades is positioned is R ₂ Wherein 1/3R ₁ ≤R ₂ ≤1/2R ₁ 。

9. A noise reducing food processor according to any one of claims 1 to 8, wherein,

the crushing cutter further comprises a second crushing cutter, the second crushing cutter is arranged above the first crushing cutter, the second crushing cutter comprises a plurality of second blades, the second blades extend obliquely upwards, and an included angle formed by the second blades and the horizontal plane is 50-65 degrees.

10. A noise reducing food processor according to claim 9, wherein,

the first crushing cutter comprises a first mounting part, a plurality of first blades are arranged along the circumferential edge of the first mounting part at intervals, the second crushing cutter comprises a second mounting part, a plurality of second blades are arranged along the circumferential edge of the second mounting part at intervals, the first mounting part is provided with a first through hole, the second mounting part is provided with a second through hole, the first through hole and the second through hole are coaxially arranged with the cutter shaft, and the shapes of the first through hole and the second through hole are non-circular.