CN213850287U

CN213850287U - Food processing machine

Info

Publication number: CN213850287U
Application number: CN202022099347.XU
Authority: CN
Inventors: 朱泽春; 曹峰; 陶琳; 刘远
Original assignee: Hangzhou Joyoung Household Electrical Appliances Co Ltd
Current assignee: Hangzhou Jiuchuang Home Appliances Co ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-08-03
Anticipated expiration: 2030-09-23

Abstract

The utility model discloses a food preparation machine, it includes stirring cup, stirring sword and is used for driving the rotatory motor of stirring sword, and the stirring sword includes arbor and blade, and the arbor is coaxial to be fixed with liquid balance ring, and liquid balance ring inject the annular chamber way that is equipped with mobile liquid, and mobile liquid accumulates the energy of concentrating in the opposite direction to the barycenter of arbor at the rotatory in-process of arbor. In the food processor, the liquid balance ring can synchronously rotate along with the cutter shaft, and the flowing liquid can accumulate energy concentrated in the direction opposite to the mass center of the cutter shaft. When the cutter shaft rotates at a high speed, the flowing liquid has obvious hysteresis, the energy is strong, the flowing liquid is concentrated in the direction opposite to the center of mass of the cutter shaft, the unbalanced mass of the liquid can at least partially offset the unbalanced mass of the center of mass of the cutter shaft, the centrifugal force generated by the flowing liquid and the centrifugal force generated by the center of mass of the cutter shaft are at least partially offset, the aim of reducing the vibration of the cutter shaft is achieved, the vibration of the cutter shaft and a system is fundamentally reduced, and the vibration noise is low.

Description

Food processing machine

Technical Field

The utility model relates to a food processing device technical field, concretely relates to food preparation machine.

Background

At present, in order to obtain a good crushing effect, the rotating speed of a motor is high generally, and the motor drives a cutter shaft to rotate at a high speed, so that a blade cuts and crushes food materials at an ultrahigh speed in a stirring cup, and the cutting of the materials is realized.

However, the blade and the arbor are limited by the manufacturing process, and there is a certain error in the manufacturing dimension and the assembling accuracy, which results in that the center of mass of the arbor does not coincide with the center of rotation when the arbor rotates. The mass center of the cutter shaft deviates from the rotation center, so that the cutter shaft does not have good dynamic balance when rotating at a high speed, the eccentric mass can cause machine vibration, vibration noise is generated, and the user experience is influenced.

When solving this problem, prior art isolated the conduction of vibration through the damping pad damping more, and concrete structure is for setting up the damping pad on the motor shaft, utilizes the elastic deformation of damping pad to absorb the vibration energy of motor, reduces motor vibration. However, the vibration damping pad can only isolate part of vibration, and cannot solve the problem of motor vibration fundamentally, so that the vibration damping effect is not ideal, and larger vibration noise still exists in the operation process of the machine. In addition, the vibration damping pad is deteriorated after long-term use, and the reliability is poor.

Disclosure of Invention

An object of the utility model is to provide a food processor for solve current food processor's the big problem of vibration noise.

In order to achieve the above object, the utility model provides a food processor, it includes stirring cup, stirring sword and is used for driving the rotatory motor of stirring sword, and the stirring sword is including stretching into the arbor in the stirring cup and installing in the blade of arbor, and the arbor is coaxial to be fixed with liquid balance ring, and liquid balance ring is injectd the annular chamber way that is equipped with flowing liquid, and flowing liquid is at the rotatory in-process of arbor and is accumulated the energy of concentrating in the opposite direction to the barycenter of arbor.

The utility model provides a food preparation machine, it is rotatory through the motor drive arbor, make the blade smash eating the material cutting in stirring cup, realize the food processing purpose. The liquid balance ring is coaxially fixed on the cutter shaft, so that the liquid balance ring can synchronously rotate along with the cutter shaft. When the liquid balance ring rotates, the rotation of the flowing liquid is delayed relative to the rotation of the cutter shaft due to the viscosity of the liquid, and therefore the flowing liquid can accumulate energy concentrated in the direction opposite to the mass center of the cutter shaft. When the cutter shaft rotates at a high speed, the flowing liquid has obvious hysteresis, and the energy is relatively strong, so that the flowing liquid is concentrated in the direction opposite to the center of mass of the cutter shaft.

When the flowing liquid is concentrated in the opposite direction of the center of mass of the cutter shaft, the unbalanced mass of the liquid can at least partially offset the unbalanced mass of the center of mass of the cutter shaft, so that the aim of reducing the vibration of the cutter shaft is fulfilled; meanwhile, the centrifugal force generated by the flowing liquid and the centrifugal force generated by the center of mass of the cutter shaft are at least partially offset, so that the dynamic balance of the cutter shaft during rotation is kept, and the vibration reduction effect is further realized.

In addition, when the liquid balance ring rotates at a high speed along with the cutter shaft, a gyroscopic effect can be generated, the cutter shaft is stabilized, and the deflection of the cutter shaft is reduced; meanwhile, due to the inertia of the liquid balance ring, when the speed of the cutter shaft changes, the liquid balance ring blocks the change, so that the aim of stabilizing the rotating speed of the cutter shaft is fulfilled, and the system vibration is reduced.

Moreover, the liquid balance ring can rotate along with the cutter shaft, so that the liquid balance ring is not easy to wear compared with a damping pad in the use process, and the use is reliable.

To sum up, the utility model provides a food preparation machine reduces arbor and system vibration from the root through setting up the liquid balance ring, and vibration noise is little, and the arbor rotational speed is stable, and user experience is good, uses reliably.

In a preferred embodiment of the food processor, the output shaft of the motor projects into the mixing cup to form a knife shaft.

The output shaft of motor directly is as the arbor, can reduce the setting of spare part, reduces assembly tolerance to avoid the arbor to rotate off-centre, help maintaining the dynamic balance of arbor in rotatory process.

In a preferred implementation mode of the food processor, the cutter shaft is rotationally connected to the stirring cup, and the cutter shaft is in transmission connection with an output shaft of the motor through a coupler.

The arbor passes through the shaft coupling with the output shaft realization of motor and can dismantle the connection, does benefit to the nimble dismouting that realizes stirring cup, and convenience of customers uses. And when the liquid balance ring is damaged, the liquid balance ring is convenient to independently disassemble and replace.

In a preferred embodiment of the food processor, the knife shaft is provided with a positioning shoulder, and the liquid balance ring is sleeved on the knife shaft and abuts against the positioning shoulder through a fastening element.

The positioning shaft shoulder is matched with the fastener to realize axial limiting of the liquid balance ring, so that the liquid balance ring is prevented from shifting and falling off in the running process of the machine, and the stability and the reliability of the structure are ensured.

In a preferred implementation mode of the food processor, a positioning straight surface for rotation limiting is arranged on a matching surface of the cutter shaft and the liquid balance ring.

The positioning straight surface is limited in rotation of the liquid balance ring, so that circumferential rotation of the liquid balance ring is avoided, the cutter shaft is ensured to drive the liquid balance ring to rotate synchronously, and structural stability is maintained. In addition, the limiting mode of positioning the straight surface is adopted, the structure is simple and ingenious, extra fixing pieces are not needed, and the dynamic balance of the cutter shaft is more favorably maintained.

In a preferred embodiment of the food processor, a guide bevel is provided on the mating surface of the knife shaft and the liquid balancing ring.

Through setting up the direction inclined plane, can make things convenient for the assembly and the fixed of liquid balance ring, the assembly is light laborsaving, and assembly efficiency is high.

In a preferred implementation of the food processor, the liquid balancing ring comprises an upper cover and a lower cover, the upper cover and the lower cover are buckled to define an annular cavity, the lower cover is provided with a partition plate extending towards the upper cover, and a gap for liquid to flow is formed between the partition plate and the upper cover.

When the partition plate is not arranged, the liquid flows only under the driving of the friction force between the partition plate and the annular cavity channel, and the flowing efficiency is low, so that the partition plate plays a role in pushing the liquid to flow in the rotating process of the liquid balance ring, the flowing of the liquid is accelerated, and the stable speed of the system can be accelerated.

In a preferred embodiment of the food processor, the lower cover is provided with a plurality of partitions which are arranged at regular intervals in its circumferential direction.

Because baffle self exists weight, consequently, a plurality of baffles in interval and make the lower cover be rotational symmetry structure, can effectively avoid the condition because of the skew of the rotatory barycenter that the baffle caused, be favorable to the balance.

In a preferred embodiment of the food processor, the inner ring of the liquid compensation ring is fixedly provided with blades for dissipating heat from the motor.

The liquid balance ring rotates to enable the heat dissipation fan blades to rotate and drive air to flow, the air flow takes away heat of the motor through the motor, the purpose of cooling the motor is achieved, dangerous accidents caused by overhigh temperature of a coil of the motor are avoided, and use safety and normal operation of the machine are guaranteed. The heat dissipation fan blade is arranged at the inner ring of the liquid balance ring, so that the axial space of the liquid balance ring caused by the self height is reasonably utilized, the height of the whole machine is favorably reduced, and the heat dissipation fan blade is convenient to store.

In a preferred embodiment of the food processor, the volume V of the flowing liquid₁Volume V of the annular channel₂Satisfies the following conditions: 1/2V₂≤V₁＜V₂。

The flowing liquid occupies at least half of the volume of the annular channel, resulting in a greater ability to counteract equilibrium. If the flowing liquid is less than half of the volume of the annular cavity, the mass of the flowing liquid can not completely offset the eccentric mass of the center of mass of the cutter shaft, and the balancing effect is not ideal. The flowing liquid is smaller than the volume of the annular cavity, which is the precondition of liquid flowing, and the liquid can be conveniently and smoothly circulated and redistributed in the annular cavity, so that the system can quickly reach a balanced state.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a schematic view of a food processor according to an embodiment.

Fig. 2 is a schematic view of a liquid balance ring in an embodiment in a state when a cutter shaft rotates at a high speed.

Fig. 3 is a schematic view of the liquid balance ring in an embodiment when the cutter shaft rotates at a low speed.

Fig. 4 is a schematic view of an installation relationship between a liquid balance ring and a cutter shaft in an embodiment.

FIG. 5 is a schematic view of the connection between the motor and the fluid balancing ring according to one embodiment.

Fig. 6 is a partially enlarged view of a portion a in fig. 5.

Fig. 7 is a schematic cross-sectional view of a motor according to an embodiment.

Fig. 8 is a partially enlarged view of a portion B in fig. 7.

FIG. 9 is a schematic diagram of a liquid balancing ring according to one embodiment.

FIG. 10 is a schematic view of a portion of a liquid balancing ring according to an embodiment.

Fig. 11 is an exploded view of a liquid balancing ring according to an embodiment.

FIG. 12 is a cross-sectional view of a liquid balancing ring according to an embodiment.

List of reference numerals:

10-a stirring cup;

20-stirring a knife;

21-cutter shaft;

211-locating the shaft shoulder;

212-a fastener;

213-positioning straight surface;

214-a guide ramp;

22-a blade;

30-a motor;

40-liquid balancing ring;

41-flowing liquid;

42-annular channel;

43-upper cover;

44-lower cover;

45-a separator;

46-a gap;

47-wind blade.

Detailed Description

In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.

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 invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

In one embodiment, as shown in fig. 1, the food processor comprises a stirring cup 10, a stirring blade 20 and a motor 30 for driving the stirring blade 20 to rotate, the stirring blade 20 comprises a cutter shaft 21 extending into the stirring cup 10 and a blade 22 mounted on the cutter shaft 21, a liquid balance ring 40 is coaxially fixed on the cutter shaft 21, the liquid balance ring 40 defines an annular cavity 42 provided with a flowing liquid 41, and the flowing liquid 41 accumulates energy concentrated in the direction opposite to the centroid of the cutter shaft during the rotation of the cutter shaft 21.

Referring to fig. 2, since there is a certain error in the manufacturing dimension and the assembling accuracy of the arbor 21 and the blade 22, the centroid P of the arbor 21 does not coincide with the rotation center Q when the arbor 21 rotates. When the arbor 21 is rotated at a high speed, the flowing liquid 41 has a significant hysteresis, and the energy is relatively strong, resulting in concentration of the flowing liquid 41 in a direction opposite to the centroid of the arbor 21, i.e., in fig. 2, the centroid of the arbor 21 is on the right side and the flowing liquid 41 is on the left side.

In the food processing machine provided in the present embodiment, the motor 30 drives the cutter shaft 21 to rotate, so that the blade 22 cuts and pulverizes the food material in the stirring cup 10, thereby achieving the purpose of processing food.

The liquid balance ring 40 is coaxially fixed on the cutter shaft 21, so that the liquid balance ring 40 can synchronously rotate along with the cutter shaft 21. The liquid balance ring 40 defines an annular channel 42 provided with a flowing liquid 41, and when the liquid balance ring 40 rotates, the flowing liquid 41 rotates relative to the rotation of the cutter shaft 21 due to the viscosity of the liquid, and therefore, the flowing liquid 41 accumulates energy concentrated in the opposite direction of the center of mass of the cutter shaft 21.

Referring to fig. 2, when the arbor 21 rotates at a high speed, the flowing liquid 41 has a significant hysteresis, and the energy is relatively strong, which results in the flowing liquid 41 concentrating toward the opposite direction of the centroid of the arbor 21, for example, the liquid shown in fig. 2 lags behind 180 ° compared with the centroid of the arbor 21, and when the flowing liquid 41 concentrates toward the opposite direction of the centroid of the arbor 21, the unbalanced mass of the liquid at least partially offsets the unbalanced mass of the centroid of the arbor 21, so as to reduce the vibration of the arbor 21; meanwhile, the centrifugal force generated by the flowing liquid 41 and the centrifugal force generated by the center of mass of the cutter shaft 21 are at least partially offset, so that the dynamic balance of the cutter shaft 21 during rotation is kept, and the vibration reduction effect is further realized.

In addition, when the liquid balance ring 40 rotates at a high speed along with the cutter shaft 21, a gyroscopic effect is generated, the liquid balance ring has a stabilizing effect on the cutter shaft 21, and the deflection of the cutter shaft 21 is reduced; meanwhile, due to the inertia of the liquid balance ring 40, when the speed of the cutter shaft 21 changes, the liquid balance ring 40 hinders the change, so that the purpose of stabilizing the rotating speed of the cutter shaft 21 is achieved, and the system vibration is reduced.

Furthermore, the liquid balance ring 40 can rotate along with the cutter shaft 21, so that the liquid balance ring is not easy to wear compared with a damping pad in the use process, and the use is reliable.

In summary, the food processor provided by the present embodiment has the liquid balance ring 40, so as to radically reduce the vibration of the knife shaft 21 and the system, and has the advantages of low vibration noise, stable rotation speed of the knife shaft 21, good user experience, and reliable use.

It should be noted that, in the food processor according to the present embodiment, the influence of the eccentric vibration generated by the liquid rotating at the low speed of the knife shaft 21 on the whole machine is small, and as shown in fig. 3, the hysteresis of the flowing liquid 41 is not significant, and the stored energy is weak, so that the flowing liquid 41 rotates with the knife shaft 21, and the acceleration of the motor 30 is usually fast, so that the vibration generated by the liquid eccentricity disappears rapidly, and after the rotating speed is increased, the flowing liquid 41 balances the eccentric mass of the knife shaft 21 rapidly.

The utility model discloses do not injecing the concrete structural style of arbor 21, it can adopt following arbitrary one:

in the first embodiment, referring to fig. 1, the output shaft of the motor 30 extends into the stirring cup 10 to form the cutter shaft 21.

In this embodiment, the output shaft of the motor 30 directly serves as the cutter shaft 21, so that the arrangement of parts and assembly tolerance can be reduced, thereby avoiding the rotation eccentricity of the cutter shaft 21 and helping to maintain the dynamic balance of the cutter shaft 21 in the rotation process.

In the second embodiment, the cutter shaft is rotatably connected to the stirring cup and is in transmission connection with the output shaft of the motor through a coupler.

Preferably, a liquid balancing ring is provided between the blade and the coupling.

In this embodiment, the arbor passes through the output shaft of shaft coupling detachable connection with the motor and does benefit to the nimble dismouting that realizes the stirring cup, and convenience of customers uses. And when the liquid balance ring is damaged, the liquid balance ring is convenient to independently disassemble and replace.

In a preferred embodiment, as shown in fig. 4, the knife shaft 21 is provided with a positioning shoulder 211, and the liquid balance ring 40 is sleeved on the knife shaft 21 and abuts against the positioning shoulder 211 through a fastener 212.

Preferably, the fastener 212 is a lock nut.

The positioning shaft shoulder 211 and the fastener 212 are matched to realize axial limiting of the liquid balance ring 40, so that the liquid balance ring is prevented from shifting and falling off in the running process of the machine, and the stability and the reliability of the structure are ensured.

In a preferred embodiment of the present embodiment, referring to fig. 5 and 6, a positioning straight surface 213 for rotation limitation is provided on a mating surface between the knife shaft 21 and the liquid balance ring 40.

The positioning straight surface 213 limits the rotation of the liquid balance ring 40, so as to avoid circumferential rotation of the liquid balance ring, ensure that the cutter shaft 21 can drive the liquid balance ring 40 to rotate synchronously, and maintain the stability of the structure. In addition, the limiting mode of the positioning straight surface 213 is adopted, the structure is simple and ingenious, additional fixing parts are not needed, and the dynamic balance of the cutter shaft 21 is more favorably maintained.

More preferably, referring to fig. 5 and 6, a guiding inclined surface 214 is provided on the matching surface of the knife shaft 21 and the liquid balance ring 40.

As shown in fig. 7 and 8, the guide slope 214 is provided to facilitate the assembly and fixation of the liquid balance ring 40, and the liquid balance ring 40 is installed as shown by the arrow in the figure, so that the assembly is easy and labor-saving, and the assembly efficiency is high. Further, the liquid balance ring 40 is fastened to the cutter shaft 21 by pressing down the lock nut in the direction of the arrow shown in the figure.

As shown in fig. 9, the liquid balancing ring 40 has a mating surface that mates with the straight positioning surface 213 and the inclined guide surface 214.

In a preferred embodiment, as shown in fig. 10 and 11, the liquid balance ring 40 comprises an upper cover 43 and a lower cover 44, the upper cover 43 and the lower cover 44 are buckled to define the annular cavity 42, the lower cover 44 is provided with a partition plate 45 extending towards the upper cover 43, and a gap 46 for liquid to flow is formed between the partition plate 45 and the upper cover 43.

In the food processor provided by the embodiment, the partition plate 45 plays a role of pushing the liquid to flow in the rotating process of the liquid balance ring 40, so that the stable speed of the system can be accelerated.

Preferably, the lower cover 44 is provided with a plurality of partitions 45 arranged at regular intervals along the circumference thereof.

Because baffle 45 self has weight, consequently, a plurality of baffles 45 of interval and make lower cover 44 be rotational symmetry structure, can effectively avoid the condition because of the skew of the rotatory barycenter that the baffle caused, be favorable to the balance.

Preferably, the upper cover 43 and the lower cover 44 are connected by means of ultrasonic welding. Reliable connection and strong sealing performance.

In a preferred embodiment, referring to fig. 9, the inner ring of the liquid balance ring 40 is fixedly provided with fan blades 47 for dissipating heat of the motor 30.

Referring to fig. 7, the fan blade 47 drives the air to flow, so that the air flows through the motor 30 to take away heat of the motor 30, and the arrow in fig. 7 shows the air flowing direction, thereby achieving the purpose of cooling, avoiding dangerous accidents caused by overhigh temperature of the coil of the motor 30, and ensuring the use safety and normal operation of the machine.

In a preferred embodiment, as shown in FIG. 12, the volume V of flowing liquid 41₁Volume V of the annular channel 42₂Satisfy the requirement of：1/2V₂≤V₁＜V₂。

The flowing liquid 41 occupies at least half the volume of the annular channel 42, resulting in a greater ability to counteract the equilibrium. If the flowing liquid 41 is less than half of the volume of the annular channel 42, the mass of the flowing liquid 41 may not completely cancel the eccentric mass of the center of mass of the cutter shaft 21, and the balancing effect is not ideal. The flowing liquid 41 is smaller than the volume of the annular cavity 42, which is the precondition of liquid flowing, and can facilitate the smooth circulation and redistribution of the liquid in the annular cavity 42, so that the system can rapidly reach the equilibrium state.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "inner", "axial", "circumferential", and the like, indicate orientations or positional relationships based on actual use of the food processor, and are used merely for convenience of description and simplification of the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

The technical solution protected by the present invention is not limited to the above embodiments, and it should be noted that the technical solution of any one embodiment is combined with the technical solution of one or more other embodiments in the protection scope of the present invention. Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. A food processing machine comprises a stirring cup, a stirring knife and a motor for driving the stirring knife to rotate, wherein the stirring knife comprises a knife shaft extending into the stirring cup and a blade arranged on the knife shaft.

2. A food processor as defined in claim 1, wherein the output shaft of the motor extends into the blending cup to form the knife shaft.

3. The food processor as defined in claim 1, wherein the knife shaft is rotatably connected to the mixing cup, and the knife shaft is drivingly connected to the output shaft of the motor through a coupling.

4. A food processor as claimed in any one of claims 1 to 3, wherein the knife shaft is provided with a locating shoulder, the liquid balance ring being fitted to the knife shaft and abutting against the locating shoulder by means of a fastener.

5. The food processor as defined in claim 4, wherein a positioning straight surface for rotation limitation is provided on a matching surface of the knife shaft and the liquid balance ring.

6. A food processor as claimed in claim 5, wherein a guide ramp is provided at the mating surface of the knife shaft and the liquid balancing ring.

7. A food processor as defined in claim 1, wherein the fluid balancing ring comprises an upper cover and a lower cover, the upper cover and the lower cover being snap-fitted to define the annular channel, the lower cover being provided with a partition extending towards the upper cover, the partition and the upper cover having a gap therebetween through which fluid flows.

8. A food processor as claimed in claim 7, wherein the lower cover is provided with a plurality of said partitions arranged at regular intervals along its circumference.

9. The food processor of claim 1, wherein the inner ring of the liquid balance ring is fixedly provided with fan blades for dissipating heat of the motor.

10. A food processor as claimed in claim 1, characterized in that the volume V of flowing liquid₁Volume V of the annular cavity₂Satisfies the following conditions: 1/2V₂≤V₁＜V₂。