CN220124539U - Noise-reducing food processor - Google Patents

Abstract

The utility model discloses a noise-reducing food processor, which comprises a main machine, a crushing cup with a built-in stirring knife and a motor, wherein a heating plate is arranged at the bottom of the crushing cup, the motor is arranged below the heating plate and is used for driving the stirring knife, the motor is a brushless motor, the crushing cup is provided with a liquid discharge hole, a liquid discharge valve assembly is arranged at the liquid discharge hole, the gravity center of the liquid discharge valve assembly is positioned above the gravity center of the brushless motor, and the transverse distance between the gravity center of the liquid discharge valve assembly and the gravity center of the brushless motor is W ₁ At a distance in the longitudinal direction ofW ₂ ，1/3W ₁ ≤W ₂ ≤3/2W ₁ . The utility model adopts the brushless motor to enable the gravity center of the motor to move upwards relative to the crushing system, so that the stabilizing effect on the crushing system can be enhanced; and the liquid discharge valve assembly forms a counterweight structure, so that the force transmission and vibration transmission among the components of the crushing system, the crushing power system, the transmission system and the like can be balanced, resonance points can be reduced, or the frequency of resonance can be weakened, and the superposition of high-frequency noise can be weakened, thereby reducing the working noise of the food processor.

Description

Noise-reducing food processor

Technical Field

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

Background

The food processor is characterized in that the food material is crushed and processed by driving the crushing cutter to rotate through the motor, and the source of working noise of the machine comprises the motor, noise generated by high-speed rotation of the crushing cutter, noise caused by resonance among structural members and superposition among different noises.

In the running process of the existing food processor, vibration of a motor causes resonance of other structural components, such as a crushing cup, a crushing cutter, a heating disc and other structures, so that a plurality of resonance points are formed, high-frequency noise superposition of the resonance points is easy to occur, and the working noise of the machine is increased. Moreover, the existing motor is large in size, the center of gravity of the motor is far away from the heating plate or the crushing cutter, the crushing cup and the crushing cutter are not beneficial to being stabilized, the motor triggers the crushing cup to vibrate, the floating amplitude of the crushing cup is large, the crushing cup further causes resonance of other structures, the working noise of the machine is increased, and the use experience of a user is influenced.

Disclosure of Invention

In order to solve the technical problems that in the prior art, a motor is far away from a heating disc or a crushing cutter, the motor causes high-frequency noise superposition of a plurality of resonance points and causes high working noise of a machine, the utility model provides a noise-reducing food processor.

The utility model discloses a noise-reducing food processor, which comprises a host machine, a crushing cup with a built-in stirring knife and a motor, wherein a heating plate is arranged at the bottom of the crushing cup, the motor is arranged below the heating plate and is used for driving the stirring knife, the motor is a brushless motor, the crushing cup is provided with a liquid discharge hole, a liquid discharge valve assembly is arranged at the liquid discharge hole, the gravity center of the liquid discharge valve assembly is positioned above the gravity center of the brushless motor, and the distance between the gravity center of the liquid discharge valve assembly and the gravity center of the brushless motor along the transverse direction is W ₁ Distance in longitudinal direction W ₂ ，1/3W ₁ ≤W ₂ ≤3/2W ₁ 。

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

and a clearance space is arranged below the brushless motor, and the height of the clearance space is not less than 1/2 of the height of the brushless motor.

The liquid discharge valve assembly comprises a valve group driving motor, and the projection of the gravity center of the valve group driving motor in the horizontal plane is not overlapped with the projection of the brushless motor in the horizontal plane.

The gravity center of the liquid discharge valve assembly and the gravity center of the brushless motor are respectively located at two sides of the central axis of the crushing cup.

The distance between the gravity center of the brushless motor and the axis of the stirring cutter shaft is L ₀ ，0≤L ₀ ≤10mm。

The radial distance from the gravity center of the liquid discharge valve assembly to the center of the stirring blade is L ₁ The radial distance from the bottom circumference of the heating plate to the center of the stirring blade is L ₂ Wherein, 3/2L ₂ ≤L ₁ ≤2L ₂ 。

The distance from the bottom of the brushless motor to the top end of the stirring blade is L ₃ The height of the crushing cup is L ₄ ，1/2L ₄ ≤L ₃ ≤2/3L ₄ 。

The heating plate is connected with the host through a flexible positioning structure, and the flexible positioning structure comprises a positioning column and a positioning hole which are in plug-in fit and an elastic piece arranged between the positioning column and the positioning hole.

The liquid discharge valve assembly is a rotary valve, the rotary valve comprises a valve body, a valve core arranged on the valve body and a valve group driving motor for driving the valve core to rotate, the valve group driving motor forms a counterweight structure, and the valve group driving motor is arranged on one side, away from the brushless motor, of the valve body in a biasing manner; the rotary valve further comprises a valve sleeve arranged between the valve body and the valve core, the valve body is provided with a liquid inlet hole, the valve sleeve extends to a position between the liquid discharge hole and the liquid inlet hole, and the valve group driving motor drives the valve core to rotate so as to conduct or cut off the liquid discharge hole and the liquid inlet hole.

The brushless motor comprises a motor main body and a motor lower shell arranged on the outer side of the bottom of the motor main body, wherein the motor lower shell is fixed with the heating disc, so that the motor main body is clamped between the motor lower shell and the heating disc, and the top end of a motor shaft of the motor main body is fixedly connected with the stirring knife.

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

1. compared with a traditional brush motor, the noise reduction food processor provided by the utility model has the advantages that the brushless motor is adopted, the rotating noise of the motor is lower, the noise reduction effect is realized, meanwhile, the brushless motor can realize variable frequency control, so that the food processor can control the brushless motor to output different rotating speeds according to different food materials and processing processes, the processing effect of the food materials is better, the processing is more sufficient, the output taste of the food materials is improved, the occupied space of the brushless motor is smaller, the compactness of the internal structure of the whole processor is improved, the occupied space of the food processor is reduced, and the storage of a user is facilitated.

And the transmission distance between the motor and the stirring knife is greatly reduced, so that the stability of driving the stirring knife can be improved, meanwhile, the self vibration of the motor is weakened, the distance between the motor and the crushing cup is reduced, the floating amplitude of the crushing cup is reduced, the stabilizing effect on the crushing cup is improved, and the noise reduction is optimized.

And the liquid discharge valve component is arranged on one side of the crushing cup in a biased manner to form a counterweight structure, and the relation between the gravity center of the liquid discharge valve component and the gravity center of the motor can balance the force transmission and vibration transmission among the crushing system (the crushing cup and the stirring blade), the crushing power system (the brushless motor), the transmission system (the motor shaft/the cutter shaft) and the liquid discharge system (the liquid discharge valve component), so that the number of resonance points can be reduced, or the frequency of resonance can be weakened, the superposition between high-frequency noise can be weakened, the integral vibration and the crushing noise can be weakened, the working noise of the food processor can be reduced, and good hearing and touch experiences can be provided for users.

2. As a preferred embodiment, a space is arranged below the brushless motor, and the height of the space is not less than 1/2 of the height of the brushless motor; therefore, the gravity center of the motor is effectively moved upwards, the gravity center of the motor is closer to the heating plate or the stirring blade, a larger clearance space is formed below the motor, the height of the clearance space depends on the change of the height of the motor on the premise of a certain axial height, the relation between the motor and the upper crushing system can be indirectly reflected, the height design of the motor can maximally stabilize the crushing system, and resonance is reduced; in addition, the space can form a noise reduction cavity, which is favorable for assisting in noise reduction, thereby improving the noise reduction effect; the clearance space is also beneficial to the arrangement of the heat dissipation air duct and the fan so as to improve the heat dissipation effect on the motor.

3. As a preferred embodiment, the drain valve assembly comprises a valve block driving motor, wherein the projection of the gravity center of the valve block driving motor in the horizontal plane is not coincident with the projection of the brushless motor in the horizontal plane; when the gravity center of the valve group driving motor is equivalent to that of the liquid discharge valve assembly, the relation between the gravity center of the liquid discharge valve assembly and the gravity center of the brushless motor in the transverse direction can be ensured by limiting the projection relation, so that the condition that the liquid discharge valve assembly forms a counterweight structure is ensured, and the counterweight structure is exerted.

4. As a preferred embodiment, the gravity center of the liquid discharge valve assembly and the gravity center of the brushless motor are respectively located at two sides of the central axis of the pulverizing cup; in this embodiment, the brushless motor may be arranged eccentrically, and the drain valve assembly and the brushless motor are disposed on opposite sides of the pulverizing cup, respectively, and serve as two counterweight bodies, so that the pulverizing cup can be balanced in the radial direction, and the pulverizing cup can be weakened to float/deflect in the radial direction, thereby helping to weaken the resonance degree or reduce the resonance point, weakening the noise superposition, and reducing the machine working noise.

5. As a preferred embodiment, the distance between the center of gravity of the brushless motor and the axis of the stirring cutter shaft is L ₀ ，0≤L ₀ Less than or equal to 10mm; thus, the brushless motor may be provided directly below the pulverizing cup or may be provided eccentrically with respect to the central axis of the pulverizing cup, and when the brushless motor is provided eccentrically, L is as follows ₀ Greater than 10mm will result in an excessively long drive chain, at this pointThe disadvantage of stably driving the agitating blade may result in an increase in pulverizing noise.

6. As a preferred embodiment, the radial distance from the center of gravity of the drain valve assembly to the center of the stirring blade is L ₁ The radial distance from the bottom circumference of the heating plate to the center of the stirring blade is L ₂ Wherein, 3/2L ₂ ≤L ₁ ≤2L ₂ The method comprises the steps of carrying out a first treatment on the surface of the The stabilizing effect of the liquid discharge valve assembly as a counterweight structure on the stirring blade can be optimized through the parameter so as to reduce the noise caused by the stirring blade.

7. As a preferred embodiment, the distance from the bottom end of the brushless motor to the top end of the stirring blade is L ₃ The height of the crushing cup is L ₄ ，1/2L ₄ ≤L ₃ ≤2/3L ₄ The method comprises the steps of carrying out a first treatment on the surface of the Therefore, the axial dimension of the whole brushless motor and the stirring blade is compressed, so that the axial height of the whole machine is lower and thinner on one hand, the occupied space of the food processor is reduced, and the gravity center height of the whole machine is reduced, so that the food processor is more stable in working; on the other hand, the brushless motor can form a stabilizing effect on the stirring knife, resonance and noise superposition caused by radial deflection of the stirring knife can be avoided, and meanwhile, the vibration of the motor and the vibration of the crushing cup are balanced, the noise superposition of resonance is weakened, and therefore noise reduction is optimized.

8. As a preferred embodiment, the heating disc is connected with the host through a flexible positioning structure, and the flexible positioning structure comprises a positioning column and a positioning hole which are in plug-in fit, and an elastic piece arranged between the positioning column and the positioning hole; therefore, the crushing cup is arranged in a floating mode, low-frequency vibration is generated by the crushing cup due to floating, high-frequency vibration generated by the motor can be overlapped, vibration amplitude of the crushing cup can be attenuated when the vibration amplitude is effectively overlapped, probability of resonance noise caused by other parts is greatly reduced, and the vibration reduction device is beneficial to reducing working noise of a food processor.

9. As a preferred embodiment, the drain valve assembly is a rotary valve, the rotary valve comprises a valve body, a valve core arranged on the valve body and a valve group driving motor for driving the valve core to rotate, the valve group driving motor forms a counterweight structure, and the valve group driving motor is arranged on one side of the valve body, which is away from the brushless motor in an offset manner; the rotary valve further comprises a valve sleeve arranged between the valve body and the valve core, the valve body is provided with a liquid inlet hole, the valve sleeve extends to a position between the liquid discharge hole and the liquid inlet hole, and the valve group driving motor drives the valve core to rotate so as to conduct or cut off the liquid discharge hole and the liquid inlet hole; therefore, when the weight of the valve group driving motor is larger than that of other parts of the rotary valve, the position of the gravity center of the rotary valve depends on the setting position of the valve group driving motor, and the relation between the gravity center of the rotary valve and the gravity center of the brushless motor (compared with the axial direction of the valve group driving motor arranged on the valve body) can be optimized by offsetting the valve group driving motor, so that the stabilizing effect of the crushing cup along the axial direction and the radial direction is ensured; and valve group driving motor locates the valve body and deviates from brushless motor's one side, can avoid interfering brushless motor's installation, guaranteed the reliability of respectively installing of change valve and brushless motor.

The valve sleeve is arranged, so that the valve sleeve not only provides sealing for the valve core, but also enables the rotary valve to be flexibly arranged on the crushing cup, and the valve sleeve can absorb vibration as a flexible piece, and can prevent the vibration of the crushing cup from being transmitted outwards so as to reduce the occurrence of resonance, and further reduce vibration and noise.

10. As a preferred embodiment, the brushless motor comprises a motor main body and a motor lower shell arranged at the outer side of the bottom of the motor main body, wherein the motor lower shell is fixed with the heating disc, so that the motor main body is clamped between the motor lower shell and the heating disc, and the top end of a motor shaft of the motor main body is fixedly connected with the stirring blade; from this, the top and the stirring sword fixed connection of motor shaft of motor main part for the motor shaft can be directly be connected and then realize direct drive stirring sword with the stirring sword, has saved to establish transmission parts such as shaft coupling etc. in addition, not only can promote the transmission efficiency of motor, can also reduce simultaneously between each part because the noise that transmission collision or vibrations produced, has reduced the spare part quantity of complete machine moreover, makes inner structure compacter, and has further reduced the weight of complete machine, and the convenience of customers takes the operation.

In addition, the motor lower shell is fixed with the heating disc so as to fix the motor main body between the motor lower shell and the heating disc, so that on one hand, structural components for fixing the whole motor in the base through the motor bracket after the motor main body is sleeved with the shell are omitted, the number of whole parts of the whole motor and the whole machine is greatly simplified, the compactness of the internal structure of the whole machine is improved, and the whole weight is reduced; on the other hand, compare in traditional mode of fixing the motor in the base through last motor support and lower motor support, only through a motor inferior valve alright realize whole motor main part and the fixed of dish that generates heat, further reduced spare part quantity, compressed brushless motor and the axial height of the integrative subassembly of dish that generates heat simultaneously to make complete machine axial height lower, thinner, further reduce the occupation space of food processor, reduced the focus height of complete machine simultaneously, make the food processor more stable at the during operation.

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 of a food processor according to an embodiment of the present utility model.

Fig. 2 is a schematic structural view of a heat generating plate according to an embodiment of the present utility model.

Fig. 3 is a bottom schematic view of the heat-generating plate of fig. 2.

Fig. 4 is a schematic diagram of an assembly of a heat generating plate and a brushless motor according to an embodiment of the utility model.

Reference numerals:

10-host computer, 11-stirring sword, 12-crushing cup, 13-motor, 14-heating dish, 20-flowing back valve subassembly, 121-flowing back hole, 122-reference column, 131-motor main part, 132-motor inferior valve, 133-motor shaft, 141-mounting groove, 142-fender muscle, 143-screw hole, 144-supporting rib, 145-air intake.

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 4, the utility model provides a noise-reducing food processor, which comprises a main machine 10, a crushing cup 12 with a built-in stirring blade 11 and a motor 13, wherein a heating plate 14 is arranged at the bottom of the crushing cup 12, the motor 13 is arranged below the heating plate 14 and is used for driving the stirring blade 11, the motor 13 is a brushless motor, the crushing cup 12 is provided with a liquid discharge hole 121, a liquid discharge valve assembly 20 is arranged at the liquid discharge hole 121, the gravity center of the liquid discharge valve assembly 20 is positioned above the gravity center of the brushless motor, and the distance between the gravity center of the liquid discharge valve assembly 20 and the gravity center of the brushless motor along the transverse direction is W ₁ Distance in longitudinal direction W ₂ ，1/3W ₁ ≤W ₂ ≤3/2W ₁ 。

According to the utility model, compared with a traditional brush motor, the brushless motor is adopted, the rotating noise of the motor 13 is lower, the frequency conversion control can be realized by the brushless motor while the noise reduction is realized, so that the food processor can control the brushless motor to output different rotating speeds according to different food materials and processing processes, the processing effect of the food materials is better and the processing is more sufficient, the output taste of the food materials is improved, the occupation space of the brushless motor is smaller, the compactness of the internal structure of the whole machine is improved, the occupation space of the food processor is reduced, and the storage of a user is facilitated.

The transmission distance between the motor 13 and the stirring blade 11 is greatly reduced, the stability of driving the stirring blade 11 can be improved, meanwhile, the self vibration of the motor 13 is weakened, the distance between the motor 13 and the crushing cup 12 is reduced, the floating/vibration amplitude of the crushing cup 12 is reduced, the stabilizing effect on the crushing cup 12 is improved, and the noise reduction is optimized. The whole thickness of the motor 13 is reduced, the gravity center of the motor 13 moves upwards relative to the crushing cup 12, on one hand, the stabilizing effect on the crushing cup 12 can be responded faster in the running process of the machine, the axial floating amount of the crushing cup 12 is reduced, on the other hand, the distance between the stirring cutter 11 and the crushing cup is shortened, the stabilizing effect on the stirring cutter 11 can be improved, and the noise caused by the stirring cutter 11 is reduced.

In addition, the liquid discharge valve assembly 20 is biased at one side of the pulverizing cup 12 to form a counterweight structure, and force transmission and vibration transmission between the pulverizing system (pulverizing cup and stirring blade), the pulverizing power system (brushless motor), the transmission system (motor shaft/cutter shaft) and the liquid discharge system (liquid discharge valve assembly) can be balanced through the relationship between the gravity center of the liquid discharge valve assembly and the gravity center of the motor, so that the number of resonance points can be reduced, or the resonance frequency and superposition between high-frequency noise can be weakened, thereby weakening the integral vibration and pulverizing noise, reducing the working noise of the food processor, and providing good hearing and touch experience for users.

It should be noted that the center of gravity of the drain valve assembly 20 may be determined as follows. The drain valve assembly 20 includes a valve block driving motor, and when the weight of the drain valve assembly 20 is almost concentrated in the valve block driving motor, the center of gravity of the valve block driving motor can be regarded as the center of gravity of the drain valve assembly 20, and the center of gravity of the valve block driving motor is measured as the position of the center of gravity of the drain valve assembly 20. Alternatively, the drain valve assembly 20 may be removed and the location of its center of gravity determined using physical suspension.

Wherein W is ₁ Refers to the vertical distance, W, of the projection of the center of gravity of the drain valve assembly 20 onto the horizontal plane to the projection of the center of gravity of the brushless motor onto the horizontal plane ₂ Refers to the vertical distance of the projection of the center of gravity of the drain valve assembly 20 onto the vertical plane to the projection of the center of gravity of the brushless motor onto the vertical plane.

In one embodiment, W ₁ 94mm, W ₂ 45mm. In another embodiment, W ₁ 102mm, W ₂ 41mm. It will be appreciated that W ₁ And W is ₂ The specific values of (a) may be other, so long as the above-mentioned proportional relation is satisfied, the present utility model is not listed here one by one. The brushless motor may be provided directly under the heat generation plate 14 or may be provided eccentrically with respect to the center of the heat generation plate 14. For the drain valve assembly 20, the valve group driving motor can be arranged along the axial direction of the valve body or at one side of the valve body, and when the weight of the drain valve assembly 20 is concentrated on the valve group driving motor, the arrangement of the valve group driving motor influences W ₂ Is a variation of (c). By W ₁ And W is ₂ By taking appropriate numerical values, the positional relationship between the brushless motor and the drain valve assembly 20 is optimized, so that resonance points can be effectively balanced, vibration and crushing noise can be reduced, and thus, working noise of the machine can be effectively reduced.

It should be noted that, the motor 13 is a brushless motor, and is different from the valve group driving motor of the drain valve assembly 20.

In a preferred embodiment of the present utility model, a space is provided below the brushless motor, and the height of the space is not less than 1/2 of the height of the brushless motor.

According to the utility model, the brushless motor is adopted, the gravity center of the motor 13 moves upwards relative to the crushing system, and the gravity center of the motor 13 is closer to the heating plate 14 or the stirring blade 11, so that a larger clearance space is formed below the motor 13, the height of the clearance space depends on the change of the height of the motor 13 on the premise of a certain axial height, the relation between the motor 13 and the crushing system above can be indirectly reflected, the crushing system can be stabilized to the greatest extent by the height design of the motor, and the resonance is reduced; in addition, the space can form a noise reduction cavity, which is favorable for assisting in noise reduction, thereby improving the noise reduction effect; the space is also advantageous for the arrangement of the heat dissipation air duct and the fan to improve the heat dissipation effect on the motor 13.

As a preferred embodiment of the present utility model, drain valve assembly 20 includes a valve train drive motor whose center of gravity is projected in the horizontal plane and the brushless motor is projected in the horizontal plane.

When the weight of the drain valve assembly 20 is concentrated on the valve group driving motor, by defining the above projection relationship, the relationship between the center of gravity of the drain valve assembly 20 and the center of gravity of the brushless motor in the lateral direction can be ensured to ensure the condition that the drain valve assembly 20 forms a weight structure, thereby functioning as a weight structure.

As a preferred embodiment of the present utility model, the center of gravity of the drain valve assembly 20 and the center of gravity of the brushless motor are located on either side of the central axis of the pulverizing cup 12.

In this embodiment, the brushless motor is eccentrically disposed, and the drain valve assembly 20 and the brushless motor are respectively disposed on opposite sides of the pulverizing cup 12, and serve as two weight bodies, so that the pulverizing cup 12 can be balanced in the radial direction, the floating/deflection of the pulverizing cup 12 in the radial direction can be reduced, the resonance degree can be reduced, the resonance point can be reduced, the noise superposition can be reduced, and the machine operation noise can be reduced.

The brushless motor of the present utility model may be disposed directly under the heat generating plate 14 or may be disposed eccentrically with respect to the center of the heat generating plate 14, and when the brushless motor is disposed eccentrically, the motor shaft may be driven by a driving member such as a gear or the like, which will not be described in detail herein. Specifically, the distance between the center of gravity of the brushless motor and the axis of the shaft of the stirring blade 11 is L ₀ ，0≤L ₀ If less than or equal to 10mm, when the brushless motor is eccentrically arranged, if L ₀ Greater than 10mm will result in an excessively long transmission chain, which is disadvantageous in stably driving the stirring blade 11, possibly resulting in an increase in crushing noise. In addition, the brushless motor changes position relative to the pulverizing cup 12, so that the brushless motor and the liquid discharge valve assembly 20 cooperate to better balance resonance points, and the noise reduction effect is further improved.

As a preferred embodiment of the present utility modelIn the embodiment, the radial distance from the center of gravity of the drain valve assembly 20 to the center of the stirring blade 11 is L ₁ The radial distance from the bottom circumference of the heating plate 14 to the center of the stirring blade is L ₂ Wherein, 3/2L ₂ ≤L ₁ ≤2L ₂ 。

For the drain valve assembly 20, the valve group driving motor thereof may be disposed along the axial direction of the valve body, or may be disposed at one side of the valve body, and when the weight of the drain valve assembly 20 is concentrated on the valve group driving motor, the position change of the center of gravity of the valve group driving motor may be focused. By making 3/2L ₂ ≤L ₁ ≤2L ₂ The stabilizing action of the drain valve assembly 20 as a counter weight structure on the stirring blade 11 may be optimized to reduce the amount of noise caused by the stirring blade 11.

As a preferred embodiment of the present utility model, the distance from the bottom end of the brushless motor to the top end of the stirring blade 11 is L ₃ The height of the pulverizing cup 12 is L ₄ ，1/2L ₄ ≤L ₃ ≤2/3L ₄ 。

The axial dimension of the whole brushless motor and the stirring blade 11 is compressed, so that the axial height of the whole machine is lower and thinner on one hand, the occupied space of the food processor is reduced, and the gravity center height of the whole machine is reduced, so that the food processor is more stable in working; on the other hand, the brushless motor can form a stabilizing effect on the stirring blade 11, resonance and noise superposition caused by radial deflection of the stirring blade 11 can be avoided, and meanwhile, the vibration of the motor 13 and the vibration of the crushing cup 12 are balanced, the resonance noise superposition is weakened, and therefore noise reduction is optimized.

In one embodiment, L ₃ 155mm, L ₄ 300mm.

As a preferred embodiment of the present utility model, the heat-generating plate 14 is connected to the host 10 by a flexible positioning structure, which includes a positioning post and a positioning hole that are in plug-in fit, and an elastic member disposed between the positioning post and the positioning hole.

The crushing cup 12 is arranged in a floating mode, the crushing cup 12 generates low-frequency vibration due to floating, the low-frequency vibration can be overlapped with high-frequency vibration generated by the motor 13, the vibration amplitude of the crushing cup 12 can be attenuated when the low-frequency vibration is effectively overlapped, the probability of resonance noise caused by other parts is greatly reduced, and the working noise of the food processor is reduced.

In one embodiment, the bottom of the heat-generating plate 14 is provided with a positioning post 122 extending downward, the host 10 is provided with a positioning hole, and the positioning post 122 passes through the elastic member and then is in plug-in fit with the positioning hole when assembled. The elastic member is, for example, a silicone sleeve or a spring. In another embodiment, the bottom of the heating plate 14 is provided with a positioning hole, and the host 10 is provided with an upward extending positioning column, and when assembled, the positioning column passes through the elastic member and then is in plug-in fit with the positioning hole. The elastic member is, for example, a silicone sleeve or a spring.

As a preferred embodiment of the present utility model, the drain valve assembly 20 is a rotary valve, the rotary valve includes a valve body, a valve core disposed on the valve body, and a valve group driving motor for driving the valve core to rotate, the valve group driving motor forms a counterweight structure, and the valve group driving motor is disposed at one side of the valve body away from the brushless motor in an offset manner; the rotary valve further comprises a valve sleeve arranged between the valve body and the valve core, the valve body is provided with a liquid inlet hole, the valve sleeve extends between the liquid discharge hole and the liquid inlet hole, and the valve group drives the valve core to rotate so as to conduct or cut off the liquid discharge hole and the liquid inlet hole.

Specifically, the present utility model does not limit the arrangement direction of the valve group driving motor, for example, the valve group driving motor may be disposed above and below the valve body in the axial direction, or disposed at a side of the valve body away from the brushless motor. The valve group driving motor is arranged in consideration of the relationship between the center of gravity of the drain valve assembly 20 and the center of gravity of the brushless motor so as to function as a counterweight of the drain valve assembly 20.

The valve sleeve is arranged, so that the valve sleeve not only provides sealing for the valve core, but also enables the rotary valve to be flexibly arranged on the crushing cup, and the valve sleeve can absorb vibration as a flexible piece, and can prevent the vibration of the crushing cup 12 from being transmitted outwards so as to reduce resonance and further reduce vibration and noise. Preferably, the valve sleeve extends to the point where the valve body is connected to the shredder cup 12 to enhance the flexible connection. It will be appreciated that flexible mounting of the drain valve assembly 20 to the shredder cup 12 may also be accomplished in other ways, and the present utility model will not be described in detail herein.

As a preferred embodiment of the present utility model, as shown in fig. 4, the brushless motor includes a motor body 131 and a motor lower case 132 provided at the outer side of the bottom of the motor body 131, the motor lower case 132 being fixed to the heating plate 14 such that the motor body 131 is interposed between the motor lower case 132 and the heating plate 14, and the top end of a motor shaft 133 of the motor body 131 is fixedly connected to the stirring blade 11.

The top of the motor shaft 133 of the motor main body 131 is fixedly connected with the stirring blade 11, so that the motor shaft 133 can be directly connected with the stirring blade 11 to directly drive the stirring blade 11, transmission components such as a coupling and the like are omitted, the transmission efficiency of the motor can be improved, noise generated by transmission collision or vibration between the components can be reduced, the number of parts of the whole machine is reduced, the internal structure is more compact, the weight of the whole machine is further reduced, and the user can conveniently take the stirring blade.

In addition, the motor lower shell 132 is fixed with the heating plate 14 so as to fix the motor main body 131 between the motor lower shell 132 and the heating plate 14, so that on one hand, structural components for fixing the whole motor in the base through a motor bracket after the motor main body 131 is sleeved with a shell are omitted, the number of whole parts of the whole motor and the whole machine is greatly simplified, the compactness of the internal structure of the whole machine is improved, and the whole weight is reduced; on the other hand, compared with the traditional mode of fixing the motor in the base through the upper motor support and the lower motor support, the whole motor main body 131 and the heating plate 14 can be fixed only through the motor lower shell 132, the number of parts is further reduced, and meanwhile, the axial height of the brushless motor and the heating plate 14 integrated component is compressed, so that the axial height of the whole machine is lower and thinner, the occupied space of the food processor is further reduced, the gravity center height of the whole machine is reduced, and the food processor is more stable in working.

Specifically, the motor main body 131 includes a stator assembly and a rotor assembly rotationally disposed in the stator assembly, the motor lower shell 132 may be carried at the bottom of the stator assembly, the motor lower shell 132 is provided with a connection portion, the stator assembly includes a stator coil and a stator housing, the stator housing is provided with a fixing portion aligned with the connection portion, and the connection member may sequentially pass through the connection portion and the fixing portion and be fixed to the heating plate 14. The connecting portion and the fixing portion may be provided with aligned through holes, for example, the heating plate 14 is provided with a mounting column, a threaded hole is formed in the mounting column, the connecting member is preferably a bolt, and the bolt sequentially passes through the through holes in the connecting portion and the fixing portion and is locked in the threaded hole, so that the motor lower shell 132, the motor main body 131 and the heating plate 14 are fixedly connected. Adopt same connecting piece to realize fixing motor inferior valve 132, motor main part 131 and heating plate 14 three, help promoting the axiality of three, and then guarantee brushless motor pivoted stability to can promote assembly efficiency, shorten assembly time. It can be appreciated that the motor lower shell 132 may also be wrapped around the outer side of the stator assembly, so as to improve the flexibility of assembly, and the specific assembly structure and assembly method will not be described herein.

As shown in fig. 3, a mounting groove 141 penetrating up and down is provided at the bottom center of the heating plate 14, so that the arbor of the stirring blade 11 or the motor shaft 133 passes through the mounting groove 141, in the scheme of fig. 4, the arbor is not required to be provided, and the motor shaft 133 directly extends out of the mounting groove 141, so that the upper end of the motor shaft 133 is used for fixing the stirring blade 11, which is helpful for simplifying the structural configuration and the assembly process. The bottom of the heating plate 14 is further provided with a downward extending rib 142, and the rib 142 surrounds the outer side of the mounting groove 141, which can limit the mounting position of the motor 13. Specifically, the rib 142 is provided with a plurality of screw holes 143 arranged at intervals along the circumferential direction, so as to fix the motor lower shell 132 and the heating plate 14 by screws. The inner side of the baffle rib 142 is also provided with a support rib 144, and the top of the motor main body 131 is abutted against the support rib 144, so that the motor main body 131 (iron core) is prevented from being too close to the heating plate 14 and being easy to generate heat conduction, and the heat dissipation of the motor is prevented from being influenced. Further, at least one side of the rib 142 is provided with a notch as the air inlet 145 to meet the heat dissipation requirement of the motor 13, so as to prevent the service life and the service life of the motor 13 from being affected when the temperature of the motor 13 is too high.

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 main machine, a crushing cup with a built-in stirring knife and a motor, wherein a heating plate is arranged at the bottom of the crushing cup, the motor is arranged below the heating plate and is used for driving the stirring knife,

the motor is a brushless motor, the crushing cup is provided with a liquid discharge hole, the liquid discharge hole is provided with a liquid discharge valve assembly, the gravity center of the liquid discharge valve assembly is positioned above the gravity center of the brushless motor, and the distance between the gravity center of the liquid discharge valve assembly and the gravity center of the brushless motor along the transverse direction is W ₁ Distance in longitudinal direction W ₂ ，1/3W ₁ ≤W ₂ ≤3/2W ₁ 。

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

and a clearance space is arranged below the brushless motor, and the height of the clearance space is not less than 1/2 of the height of the brushless motor.

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

the liquid discharge valve assembly comprises a valve group driving motor, and the projection of the gravity center of the valve group driving motor in the horizontal plane is not overlapped with the projection of the brushless motor in the horizontal plane.

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

the gravity center of the liquid discharge valve assembly and the gravity center of the brushless motor are respectively located at two sides of the central axis of the crushing cup.

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

the distance between the gravity center of the brushless motor and the axis of the stirring cutter shaft is L ₀ ，0≤L ₀ ≤10mm。

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

the radial distance from the gravity center of the liquid discharge valve assembly to the center of the stirring blade is L ₁ The radial distance from the bottom circumference of the heating plate to the center of the stirring blade is L ₂ Wherein, 3/2L ₂ ≤L ₁ ≤2L ₂ 。

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

the distance from the bottom end of the brushless motor to the top end of the stirring blade is L ₃ The height of the crushing cup is L ₄ ，1/2L ₄ ≤L ₃ ≤2/3L ₄ 。

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

the heating plate is connected with the host through a flexible positioning structure, and the flexible positioning structure comprises a positioning column and a positioning hole which are in plug-in fit and an elastic piece arranged between the positioning column and the positioning hole.

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

the liquid discharge valve assembly is a rotary valve, the rotary valve comprises a valve body, a valve core arranged on the valve body and a valve group driving motor for driving the valve core to rotate, the valve group driving motor forms a counterweight structure, and the valve group driving motor is arranged on one side, away from the brushless motor, of the valve body in a biasing manner;

the rotary valve further comprises a valve sleeve arranged between the valve body and the valve core, the valve body is provided with a liquid inlet hole, the valve sleeve extends to a position between the liquid discharge hole and the liquid inlet hole, and the valve group driving motor drives the valve core to rotate so as to conduct or cut off the liquid discharge hole and the liquid inlet hole.

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

the brushless motor comprises a motor main body and a motor lower shell arranged on the outer side of the bottom of the motor main body, wherein the motor lower shell is fixed with the heating disc, so that the motor main body is clamped between the motor lower shell and the heating disc, and the top end of a motor shaft of the motor main body is fixedly connected with the stirring knife.