CN109124396B

CN109124396B - Low-noise pulping method of food processing machine

Info

Publication number: CN109124396B
Application number: CN201811003544.8A
Authority: CN
Inventors: 王旭宁; 许子悦; 郭明升
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2018-08-30
Filing date: 2018-08-30
Publication date: 2021-09-10
Anticipated expiration: 2038-08-30
Also published as: CN109124396A

Abstract

The embodiment of the invention discloses a low-noise pulping method of a food processor, which comprises the following steps: heating the slurry to a first preset temperature, starting continuous or intermittent pulping, and heating at a preset low power in the pulping process; the small power may include: power less than or equal to P/2, P is rated heating power. By the scheme of the embodiment, the pulping noise is reduced, the requirements on pulping performance are met, and the pulping effect is ensured.

Description

Low-noise pulping method of food processing machine

Technical Field

The embodiment of the invention relates to a control technology of cooking equipment, in particular to a low-noise pulping method of a food processing machine.

Background

At present, the pulping noise of food processing machines (such as soymilk makers) is generally over 75dB, and some pulping noises even exceed 85dB, so that the use experience of users is poor. The noise source of the food processor is mainly noise caused by the collision of the blade, the spoiler and the cup wall with materials due to the high-speed rotation of the crushing blade driven by the motor.

In order to solve the problem of noise, methods such as increasing the pulping temperature or reducing the pulping rotating speed are generally adopted, but the scheme can cause the problems of overflow or poor crushing and the like.

Disclosure of Invention

The embodiment of the invention provides a low-noise pulping method of a food processor, which can reduce pulping noise and meet the requirements on pulping performance.

To achieve the object of the embodiments of the present invention, the embodiments of the present invention provide a low noise pulping method of a food processor, which may include:

heating the slurry to a first preset temperature, starting continuous or intermittent pulping, and heating at a preset low power in the pulping process; the small power may include: power less than or equal to P/2, P is rated heating power.

Optionally, the method may further include: and determining different pulping processes according to the material quantity.

Alternatively, the pulping process may comprise any one or more of: heating time length with small power, power size with small power and pulping time length;

wherein, the heating time length of the small power, the power of the small power and the beating time length are in direct proportion to the material quantity.

Optionally, the food processing flow of the food processor may comprise: a preheating stage; the preheating stage is used for heating the slurry from room temperature to a preset temperature value;

heating the slurry to a first preset temperature, starting continuous or intermittent pulping, and heating at a preset low power in the pulping process comprises:

heating the slurry from the room temperature to a first preset temperature at a rated heating power P;

heating the pulp from a first preset temperature to a second preset temperature with preset first low-power heating power, and carrying out intermittent pulping at a first pulping speed and a first pulping period;

heating the pulp from the second preset temperature to a third preset temperature at a preset second low power, and performing intermittent pulping at a second pulping speed and a second pulping period;

the first preset temperature is lower than the second preset temperature, and the second preset temperature is lower than the third preset temperature; the first small power is larger than the second small power; the first pulping speed is lower than the second pulping speed; the cycle duration of the first pulping cycle is less than the cycle duration of the second pulping cycle.

Optionally, the first small power comprises: p/2;

the first beating speed comprises: 800rpm-1500 rpm;

the first pulping period satisfies: the stirring time is 1s-2s, and the stopping time is 1s-2 s;

the second small power includes: p/3 or P/4;

when the second small power is P/3, the second beating speed comprises the following steps: 1500rpm to 2500 rpm; the second pulping period satisfies the following conditions: the stirring time is 2s-3s, and the stopping time is 2s-3 s;

when the second small power is P/4, the second beating speed comprises the following steps: 2500rpm-3500 rpm; the second pulping period satisfies the following conditions: the stirring time comprises 3s-4s, and the stopping time comprises 3s-4 s.

Optionally, the food processing flow of the food processor further comprises: a pre-crushing stage; the pre-crushing stage is used for primarily crushing food materials in the slurry; the temperature of the slurry in the pre-crushing stage is higher than a first preset temperature;

the continuous or intermittent beating is started, and the heating at a preset low power in the beating process comprises the following steps:

continuously pulping at a preset third pulping speed and a first pulping time, and heating at a preset third low power;

wherein, the third beating speed is inversely proportional to the first beating time length, and the third low power is directly proportional to the third beating speed.

Optionally, the third beating speed comprises: 4000rpm to 6000 rpm;

the first pulping time period comprises: 40s-50 s;

the third small power includes: 80-120W.

Optionally, the food processing flow of the food processor further comprises: an anti-overflow collision stage; the anti-overflow stage is a stage in which the serous fluid continuously or intermittently touches a preset anti-overflow electrode; the temperature of the slurry in the anti-overflow stage is higher than a first preset temperature;

intermittent pulping is carried out at a preset fourth pulping speed and a third pulping period, and heating is carried out at a preset fourth low power;

wherein, the fourth beating speed is in direct proportion to the cycle time of the third beating cycle, and the fourth miniwatt is in direct proportion to the fourth beating speed.

Optionally, the food processing flow of the food processor further comprises: a formal crushing stage; the formal crushing stage is a stage of beating at a preset high rotating speed to further crush the blocky materials; the temperature of the slurry in the formal crushing stage is higher than a first preset temperature; high speed means a speed of 10000rpm or more;

intermittent pulping is carried out at a preset fifth pulping speed and a preset fourth pulping period, and heating is carried out at a preset fifth low power;

wherein the fifth beating speed is inversely proportional to the beating time period in the fourth beating cycle, and the heating time period of the fifth low power is inversely proportional to the fourth beating speed.

Optionally, the method may further include:

and in a preset voltage floating range of the local standard voltage, calculating the number of the half waves required to be conducted in each m half waves under the current working voltage according to the adopted heating power so as to enable the current voltage to reach the equivalent power of the local standard voltage.

The beneficial effects of the embodiment of the invention can include:

1. in the embodiment of the invention, the slurry is heated to a first preset temperature, continuous or intermittent pulping is started, and heating is carried out at preset low power in the pulping process; the small power may include: power less than or equal to P/2, P is rated heating power. By the scheme of the embodiment, the pulping noise is reduced, the requirements on pulping performance are met, and the pulping effect is ensured.

2. The method of the embodiment of the invention can also comprise the following steps: and determining different pulping processes according to the material quantity. If the small material amount is heated by high power, the temperature of the whole slurry is likely to rise along with pulping, and the overflow risk is increased; if low power heating is selected for the bulk material, the effect of maintaining the temperature is not achieved and the noise becomes loud. In addition, the maximization of pulping efficiency is guaranteed due to the fact that different material quantities correspond to different pulping time, the problems of surplus crushing efficiency and motor temperature rise which are possibly caused when a high rotating speed corresponds to a small material quantity for a long time are solved, and the problem of poor crushing which is possibly caused when a high rotating speed corresponds to a large material quantity for a short time is also solved. Therefore, through this embodiment scheme, can further reduce the making beating noise, prevent to overflow the risk, guarantee the slurrying effect.

3. The food processing flow of the food processor of the embodiment of the invention can comprise the following steps: a preheating stage; the preheating stage is used for heating the slurry from room temperature to a preset temperature value; heating the slurry to a first preset temperature, starting continuous or intermittent pulping, and heating at a preset low power in the pulping process comprises: heating the slurry from the room temperature to a first preset temperature at a rated heating power P; heating the pulp from a first preset temperature to a second preset temperature with preset first low-power heating power, and carrying out intermittent pulping at a first pulping speed and a first pulping period; heating the pulp from the second preset temperature to a third preset temperature at a preset second low power, and performing intermittent pulping at a second pulping speed and a second pulping period; the first preset temperature is lower than the second preset temperature, and the second preset temperature is lower than the third preset temperature; the first small power is larger than the second small power; the first pulping speed is lower than the second pulping speed; the cycle duration of the first pulping cycle is less than the cycle duration of the second pulping cycle. Through this embodiment scheme, can guarantee in the preheating stage that the material has the sufficient time water absorption softening, reach and fall the purpose of making an uproar to make the thick liquid temperature more even, avoid the heat sudden change and arouse the thick liquid foam to go up fast, cause the thick liquid to overflow.

4. The food processing flow of the food processor of the embodiment of the invention also comprises the following steps: a pre-crushing stage; the pre-crushing stage is used for primarily crushing food materials in the slurry; the temperature of the slurry in the pre-crushing stage is higher than a first preset temperature; starting continuous or intermittent beating and heating at a preset small power during beating may include: continuously pulping at a preset third pulping speed and a first pulping time, and heating at a preset third low power; wherein, the third beating speed is inversely proportional to the first beating time length, and the third low power is directly proportional to the third beating speed. Through this embodiment scheme, can guarantee the effect of smashing in advance to can prevent to spill over night, maintain thick liquid temperature and do not descend, do benefit to and fall the noise.

5. The food processing flow of the food processor of the embodiment of the invention also comprises the following steps: an anti-overflow collision stage; the anti-overflow stage is a stage in which the serous fluid continuously or intermittently touches a preset anti-overflow electrode; the temperature of the slurry in the anti-overflow stage is higher than a first preset temperature; starting continuous or intermittent beating and heating at a preset small power during beating may include: intermittent pulping is carried out at a preset fourth pulping speed and a third pulping period, and heating is carried out at a preset fourth low power; wherein, the fourth beating speed is in direct proportion to the cycle time of the third beating cycle, and the fourth miniwatt is in direct proportion to the fourth beating speed. Through this embodiment scheme, add interval stirring thick liquid and can make thick liquid temperature more even through stirring thick liquid, prevent that the heat is inhomogeneous to lead to the problem that thick liquid foam rises suddenly. In the third pulping period, the pulping time leads the pulp to flow to generate turbulent flow, the waiting time leads the pulp to flow fully, the fourth pulping speed is in direct proportion to the cycle duration of the third pulping period and the fourth low power, and the pre-crushing function can be realized at the same time under the condition of ensuring the uniform temperature,

6. the method of the embodiment of the invention can also comprise the following steps: and in a preset voltage floating range of the local standard voltage, calculating the number of the half waves required to be conducted in each m half waves under the current working voltage according to the adopted heating power so as to enable the current voltage to reach the equivalent power of the local standard voltage. Through the scheme of the embodiment, the consistency of the heating power is better, the overflow risk is reduced, and the cycle consistency is improved.

Additional features and advantages of embodiments of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the embodiments of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the examples of the application do not constitute a limitation of the embodiments of the invention.

FIG. 1 is a flow chart of a low noise pulping method of a food processor according to an embodiment of the present invention;

FIG. 2 is a flowchart of a method of the embodiment of the invention when the preheating stage starts continuous or intermittent beating and heating is performed at a preset low power during beating;

FIG. 3 is a flowchart of a method of continuous or intermittent beating at the beginning of the pre-crushing stage and heating at a preset low power during the beating process according to an embodiment of the present invention;

FIG. 4 is a flowchart of a method for starting continuous or intermittent beating in the anti-overflow stage and heating at a preset low power during the beating process according to the embodiment of the invention;

FIG. 5 is a flowchart of a method of starting continuous or intermittent beating in a formal crushing stage and heating at a preset low power during the beating process according to an embodiment of the present invention;

FIG. 6 is a schematic diagram illustrating the number of open half waves required for the heating power corresponding to 220V according to an embodiment of the present invention;

FIG. 7 is a schematic diagram comparing a new heating control algorithm and an old heating control algorithm according to an embodiment of the present invention;

fig. 8 is a comparison diagram of the control algorithms of the old and new motors according to the embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.

Example one

An embodiment of the present invention provides a low-noise pulping method for a food processor, as shown in fig. 1, the method may include S101:

s101, heating the slurry to a first preset temperature, starting continuous or intermittent pulping, and heating at a preset low power in the pulping process; the small power may include: power less than or equal to P/2, P is rated heating power.

In the embodiment of the invention, because the current pulping process can not give consideration to pulping noise, slurry overflow and pulping effect, the embodiment of the invention provides the low-noise pulping method of the food processor, continuous or intermittent pulping can be carried out according to different pulping stages in the pulping process, the pulping effect is ensured, and the pulping noise is reduced; can assist the miniwatt heating at the making beating in-process to can prevent that the thick liquid from producing the overflowed thick liquid because of the power is too big, and can make the material fully absorb water and soften, further reach the purpose of noise reduction.

Example two

This example is based on the first example, and shows a specific implementation manner of the embodiment of the present invention in the preheating stage when the food processing flow includes the preheating stage.

Optionally, the food processing flow of the food processor may comprise: a preheating stage; the preheating stage is used for heating the slurry from room temperature to a preset temperature value.

Alternatively, as shown in fig. 2, heating the slurry to a first preset temperature, starting continuous or intermittent beating, and heating at a preset small power during beating may include S201 to S203:

s201, heating the slurry from the room temperature to a first preset temperature T1 at a rated heating power P.

In the embodiment of the present invention, the first preset temperature T1 may satisfy: 75 ℃ T1 ℃ 80 ℃.

In an embodiment of the invention, in the initial heating phase of the preheating phase, heating at full power (i.e. rated heating power P) can be used to calculate the total amount of material in the milling cup. Specifically, the water (containing material) capacity can be determined according to the relationship among the heating energy W1 provided by the power supply to the whole machine, the temperature rise energy W2 of the water (containing material) and the heating efficiency eta: w1 ═ W2.

In the embodiment of the invention, the heating energy W1 from the power supply to the whole machine is heating power P, heating time t is working voltage U, heating current I, and heating time t; water (containing material) absorbed energy W2-water (containing material) specific heat capacity C-water (containing material) mass m-water (containing material) temperature rise Δ T; under the condition that the voltage, the current, the heating time, the specific heat capacity, the temperature rise and the heating efficiency are known, the total amount of the materials can be obtained.

S202, heating the pulp from the first preset temperature to the second preset temperature T2 with preset first low-power heating power, and carrying out intermittent pulping at the first pulping speed and the first pulping period.

In the embodiment of the present invention, the second preset temperature T2 may satisfy: 90 ℃ T2 ℃ 95 ℃.

In an embodiment of the present invention, the first small power may include: p/2. The half-power heating is intended to gradually increase the temperature by medium-fire heating. Compared with full-power heating to the same temperature point, the half-power heating time is longer, and more time for the material to absorb water and soften at the temperature of over 75 ℃ is ensured; the half power heating time is shorter and has less impact on the pulping cycle than 1/3 or less power heating to the same temperature point.

In an embodiment of the present invention, the first beating speed may include: 800rpm-1500 rpm. The initial temperature of the stage is not high, if the stirring rotation speed of the motor is too high, a large amount of materials are sucked into the turbulence cover to cause noise to be increased, on the other hand, the current heating power is 1/2P, and if the rotation speed is simultaneously increased, the liquid level of the slurry can be quickly raised to overflow due to the heating heat and the inertia of the high-speed rotation of the slurry.

In the embodiment of the invention, the first pulping speed can be selected to be 1000 rpm. The purpose of using 1000rpm is to agitate only the liquid in the cup and not to suck up the beans. This phase can therefore be agitated at short intervals at ultra low speeds of 1000rpm to achieve homogenisation temperature.

In the embodiment of the invention, the first pulping period can satisfy the following conditions: the stirring time is 1s-2s, and the stopping time is 1s-2 s.

S203, heating the pulp from the second preset temperature to a third preset temperature T3 at a preset second low power, and performing intermittent beating at a second beating speed and a second beating period.

In the embodiment of the present invention, the third preset temperature T3 may satisfy: 99 ℃ < (T3); the second small power may include: p/3 or P/4.

In the present embodiment, heating at low power (referred to herein as second low power) while agitating the slurry results in less thermal inertia because the entire slurry temperature is already near boiling, if heating at full or half power, the temperature rises quickly, the slurry foams quickly, and the thermal inertia is too great and can lead to spillage. The heating with the second low power and the simultaneous adding and stirring of the pulp can make the temperature of the pulp more uniform and avoid the sudden change of heat to cause the rapid uprush of pulp foam.

In the embodiment of the present invention, when the second low power is P/3, the second beating speed may include: 1500rpm to 2500 rpm; the second beating cycle can satisfy: the churning time may include 2s-3s and the stop time may include 2s-3 s.

In the embodiment of the present invention, when the second low power is P/4, the second beating speed may include: 2500rpm-3500 rpm; the second beating cycle can satisfy: the churning time may include 3s-4s and the stop time may include 3s-4 s.

In the embodiment of the invention, the initial temperature at this stage is higher, and a part of materials are already present, for example, beans float upwards due to the stress change of water absorption expansion, at this time, the stirring rotation speed can be properly increased to enable another part of beans stressed in balance to be subjected to an upward suction force, the suction force is determined by the motor stirring rotation speed, if the rotation speed is too high, more beans can be sucked into the turbulence cover to be cut by the blade, the noise becomes larger, and if the rotation speed is too low, the upward suction force of the beans cannot be provided, so the motor stirring rotation speed can be set to be 1500-. The heating power was chosen 1/3P or 1/4P because the purpose of this phase was to slowly increase the temperature with low power while increasing the bean-soaking time. If the heating power is too large, the soybean milk may overflow due to large thermal inertia on the one hand, and on the other hand, the heating time is shortened, so that the soybean soaking time is shortened, the soybean is not softened enough, and the crushing noise is large. 1/3P may correspond to 2000rpm, 1/4P to 3000rpm because 1/3P is more powerful than 1/4P, and the liquid is more fluid from bottom to top near boiling, where 2000rpm is sufficient to provide a corresponding suction force, and where too high a rotation speed may cause the slurry level to rise, or even overflow.

EXAMPLE III

This embodiment is based on the second embodiment, and in order to prevent overflow caused by too long heating time, a specific implementation is given that the heating time of the second low power (the power of the low power heating can be set to 1/3P to 1/4P), can be limited according to different capacities (or material quantities).

In the embodiment of the present invention, taking 1000W heating tube, 130W motor, 1300ml material as an example, assuming that the temperature rises from T2 to T3 to 5 ℃, the total absorbed energy of the material is C × m Δ T ═ 4200 × 1.3 × 5 ═ 27300J, the total heating energy provided by the power supply is U × I × T × η, the stirring speed of the 130W motor is 15W, the heating efficiency is 0.8, the motor is stopped for 3s by stirring, then (1000 × T/3+15 × T/2) × 0.8 ═ 27300, and T ═ 100s can be obtained, that is, the second low-power heating time can be limited to 100 s. It can be seen that the amount of material is directly proportional to the second low power heating time.

In the embodiment of the present invention, the correspondence between the material quantity and the second small power heating time (the rated heating power P is 1000w, and the second small power is 1/3P) may satisfy the following relation:

(1000*t/3+15*t/2)*0.8＝C*m*ΔT；

from this relationship, one can obtain: t is 15 × m Δ T.

In the embodiment of the invention, the stirring rotating speed can meet the following requirements: 1000< S1< > 3000, if the rotating speed is set to be too high, too much material is cut by the blade or sucked into the spoiler, and the noise becomes loud; if the rotating speed is set too low, the effect of uniform slurry temperature cannot be achieved.

In the embodiment of the invention, according to the actual material amount, the corresponding relation between the stirring rotating speed and the material amount can meet the following requirements:

actual material volume <700 ml: the rotating speed of the stirring slurry is 3000 rpm;

the actual material amount meets 700-900 ml: the rotating speed of the stirring paddle is 2000 rpm;

actual material volume >900 ml: the stirring speed is 1000 rpm.

In the embodiment of the invention, the interval slurry stirring working mode can be as follows: stirring the pulp t1s, and waiting for t2 s; 1< ═ t1< ═ 6, 1< ═ t2< ═ 6. The stirring time causes slurry to flow to generate turbulence, the waiting time causes the slurry to flow fully, and if the slurry is stirred all the time without waiting time, the temperature of the slurry is reduced, so that the slurry needs to be stirred at intervals. When the slurry is close to boiling, small bubbles flowing from the bottom to the upper part can be formed, the rotation of the motor can enable the slurry to rotate in a direction perpendicular to the flowing direction of the small bubbles, namely turbulent flow is generated on the slurry, more materials sinking at the bottom tend to move upwards as a result of the turbulent flow, and more materials float upwards under the action of water absorption, expansion and stress.

Example four

This embodiment provides a specific implementation process of the preheating stage based on the second embodiment or the third embodiment.

In an embodiment of the present invention, the pre-heating stage is heated to T3 ℃, which includes: full power heating to T1 deg.C, half power heating while stirring to T2 deg.C at intervals, 1/3 or 1/4 power heating while stirring to T3 deg.C at intervals. The pulping period can meet the following requirements: agitation t1s stopped the t2s cycle.

In the embodiment of the present invention, specifically, the following relationship may be satisfied:

heating power 1/2P, stirring speed 1000rpm, stirring time 1s and stopping time 1 s;

heating power 1/3P, stirring speed 2000rpm, stirring time 2s and stopping time 2 s;

heating power 1/4P, stirring speed 3000rpm, stirring time 3s and stopping time 3 s.

EXAMPLE five

This example is based on any of the above examples, and shows a specific implementation manner of the embodiment of the present invention in the pre-crushing stage when the food processing flow includes the pre-crushing stage.

Optionally, the food processing flow of the food processor may further include: a pre-crushing stage; the pre-crushing stage is used for primarily crushing food materials in the slurry; the temperature of the slurry in the pre-crushing stage is higher than a first preset temperature.

Alternatively, as shown in fig. 3, in the preliminary grinding stage, starting continuous or intermittent beating, and heating at a preset small power during beating may include S301:

s301, carrying out continuous pulping at a preset third pulping speed and a first pulping time, and heating at a preset third low power;

Alternatively, the third beating speed may include: 4000rpm to 6000 rpm; the first paste time period may include: 40s-50 s; the third small power may include: 80-120W.

In the embodiment of the present invention, the pre-pulverization stage may adopt a manner of beating and heating, the beating rotation speed (i.e. the third beating speed) may be controlled at 4000-6000rpm, and the heating power (i.e. the third low power) may be controlled at 80-120 w.

In the embodiment of the invention, the motor can continuously work for 40-50s in the pre-crushing stage, if the third low-power heating is not started at the same time, the slurry temperature can be reduced after 20s, and the slurry temperature is reduced to directly cause more materials sucked into the turbulence cover, so that the noise is increased. In addition, the pre-crushing only crushes a part of materials, if the rotating speed is too high, too much materials are sucked, so that the noise is increased, and therefore, the beating rotating speed is controlled at 4000-6000rpm, so that the phenomenon can be avoided.

In the embodiment of the invention, the ratio of the pulping rotating speed to the pulping time can achieve better pre-crushing effect. The heating control power is in direct proportion to the rotating speed of the slurry, and the higher the rotating speed of the motor under the same condition is, the faster the slurry rotates, and the more heat is dissipated, so that the beating rotating speed is in direct proportion to the heating power, and the excessive heat dissipation can be avoided. The reason that the heating power (namely the third small power) is selected to be 80-120W is that the liquid level rises along with the rotation of the slurry in the pre-crushing process, if the heating power is selected to be too large, the heat loss of the slurry is exceeded, the temperature of the slurry is increased equivalently, the liquid level further rises due to the fact that the temperature rises to the boiling point, and then the overflow is caused, so that the third small power is selected for heating, the overflow is avoided, the temperature of the slurry can be maintained, and the noise reduction is facilitated.

EXAMPLE six

The embodiment provides a specific implementation mode that different material quantities correspond to different heating powers in a pre-crushing stage when a food processing flow comprises the pre-crushing stage on the basis of the fifth embodiment.

In the embodiment of the invention, according to the actual material quantity, the corresponding relation between the heating power and the material quantity can satisfy the following conditions:

actual material volume <700 ml: the third small power may be 80 w;

the actual material amount meets 700-900 ml: the third small power may be 130 w;

actual material volume >900 ml: the third small power may be 180 w.

In the embodiment of the invention, different material quantities can correspond to different heating powers, the more the material quantities are, the larger the corresponding heating power is, and the purpose of heating during pulping is to maintain that the pulp temperature does not drop obviously or slightly rises. If high-power heating is selected at low capacity, the temperature of the whole slurry can be increased along with beating, and the overflow risk is increased; if low power heating is selected for high capacity, the effect of maintaining temperature is not achieved and noise becomes loud.

In the embodiment of the invention, after the preheating is completed, the boiling state is basically achieved, at least more than 1/3 materials float in the upper position in the slurry after absorbing water and expanding, 4000-. The purpose of beating is opened the miniwatt heating simultaneously and is aimed at maintaining thick liquid temperature, if do not open the heating, thick liquid temperature can reduce gradually along with the rotation of thick liquid, and the material that floats after thick liquid temperature reduces can sink fast, has more materials probably to be inhaled the spoiler or by the blade cutting promptly. Therefore, the temperature of the slurry is maintained by a third small power during the pre-crushing. On the other hand, the heating power during beating cannot be too large, and if the heating power is too large, the eddy current formed by beating can accelerate the foaming speed of heating, and overflow risk can be caused, so that the heating power needs to be controlled to be 80-120 w.

In the embodiment of the invention, in order to prevent the heating during pulping from causing high pulp foam or overflow risk, the detection of the overflow prevention signal is carried out in the pre-crushing stage. And if the pre-crushing stage detects an anti-overflow signal, adding 1 to the anti-overflow signal, recording the current working step, stopping beating and heating at the same time, continuing to recover to the previous working step after waiting for 30s, and if the anti-overflow signal is detected for 2 times, reducing the power of all beating in the later period. Aim at prevents that the user from placing too much material, and arouse and spill over the risk, promotes soybean milk machine operational reliability.

EXAMPLE seven

This example shows a specific implementation process of the pre-pulverization stage based on the fifth or sixth example.

In the embodiment of the invention, the pre-crushing stage can heat the pulp at the same time and detect the anti-overflow signal.

the pulping speed is 4000rpm, the pulping time is 50s, and the heating power is 80W

The pulping speed is 5000rpm, the pulping time is 45s, and the heating power is 100W

The beating speed is 6000rpm, the beating time is 40s, and the heating power is 120W.

Example eight

The embodiment provides a specific implementation mode of the anti-overflow stage when the food processing flow comprises the anti-overflow stage on the basis of any embodiment.

Optionally, the food processing flow of the food processor may further include: an anti-overflow collision stage; the anti-overflow stage is a stage in which the serous fluid continuously or intermittently touches a preset anti-overflow electrode; the temperature of the slurry in the anti-overflow stage is higher than a first preset temperature;

alternatively, as shown in fig. 4, starting continuous or intermittent beating and heating at a preset small power during beating may include S401:

s401, carrying out intermittent pulping at a preset fourth pulping speed and a preset third pulping period, and heating at a preset fourth low power;

In the embodiment of the invention, the overflow prevention stage can adopt a mode of heating and simultaneously stirring the pulp, the rotation speed of the stirring pulp can be controlled at 3000-4000rpm, and the working mode of stirring the pulp at intervals can comprise: stirring the pulp t3s, and waiting for t4 s; 3< ═ t3< ═ 6, 3< ═ t4< ═ 6.

In the embodiment of the invention, the purpose of the anti-overflow stage is to raise the temperature of the pulp to the boiling point by heating with small power (i.e. the fourth small power mentioned above) and simultaneously raise the pulp foam, and the heating is stopped immediately when the anti-overflow electrode detects the pulp foam signal. This process may overflow due to large thermal inertia if high power heating is used.

In the embodiment of the invention, the stirring rotation speed at 3000-4000rpm in the stage is because a part of materials, such as beans, are cut into small pieces after pre-crushing, the rotation speed is slightly higher in the stage to have certain crushing effect, and because 1/3P or 1/4P is heated at the same time, the stirring time is also short, and the noise can be controlled better. If the stirring speed is too high, the liquid level of the slurry may rise rapidly under the heating action due to the thermal inertia caused by the high speed, so that the overflow risk is generated.

In the embodiment of the invention, the advantage of adding interval stirring pulp at the stage is that the pulp temperature is more uniform by stirring the pulp, and the problem that the pulp foam suddenly rises due to nonuniform heat is prevented. The selection of the rotating speed can ensure the uniform temperature and simultaneously have a certain pre-crushing function, the pulp stirring time enables the pulp to flow to generate turbulence, the waiting time enables the pulp to flow fully, if the pulp is stirred all the time without the waiting time, the temperature can be reduced, the collision prevention time is prolonged to further influence the pulping period, and in addition, the problem of overhigh temperature rise of a motor can be generated, so the interval pulp stirring (namely the intermittent pulping) is selected.

Example nine

On the basis of the eighth embodiment, the embodiment provides a specific implementation mode that when the food processing flow includes the anti-overflow stage, different material quantities correspond to different heating times in the anti-overflow stage.

In the embodiment of the present invention, the heating power of the anti-overflow stage, that is, the fourth low power, may be set to 1/3P to 1/4P, and in order to prevent overflow due to too long heating time, the heating time of the anti-overflow stage may be set according to different volumes (material amounts).

In the embodiment of the invention, the corresponding relation between the material quantity and the anti-overflow heating time (the rated heating power P is 1000w, and the fourth low power is 1/3P) can still satisfy the following relational expression:

(1000*t/3+15*t/2)*0.8＝C*m*ΔT。

from this relationship, one can obtain: t is 15 × m Δ T.

actual material volume <700 ml: the rotating speed of the stirring paddle is 2000 rpm;

the actual material amount meets 700-900 ml: the rotating speed of the stirring slurry is 3000 rpm;

actual material volume >900 ml: the stirring speed is 4000 rpm.

In the embodiment of the invention, different material quantities correspond to different stirring powers, and the more the material quantity, the higher the corresponding stirring power. If a high rotational speed is selected for a low volume of material, this may result in a too fast rise of the pulp froth and an increased risk of spillage, and if a low rotational speed is selected for a high volume of material, this may result in an insufficient stirring force and a loss of the uniform temperature effect and an increased risk of spillage.

Example ten

The embodiment provides a specific implementation process of the anti-overflow stage on the basis of the seventh embodiment or the eighth embodiment.

In the embodiment of the invention, the pulp can be stirred simultaneously when the anti-overflow stage is heated, and the pulping period can meet the following requirements: agitation t3s stopped the t4s cycle.

heating power 1/3P, stirring speed 4000rpm, stirring time 4s and stopping time 4 s;

EXAMPLE eleven

This embodiment provides a specific implementation manner of the embodiment of the present invention in a formal grinding stage when a food processing flow includes the formal grinding stage on the basis of any of the above embodiments.

Optionally, the food processing flow of the food processor may further include: a formal crushing stage; the formal crushing stage is a stage of beating at a preset high rotating speed to further crush the blocky materials; the temperature of the slurry in the formal crushing stage is higher than a first preset temperature; high speed means a speed of 10000rpm or more;

alternatively, as shown in fig. 5, starting continuous or intermittent beating and heating at a preset small power during beating may include S501:

s501, carrying out intermittent pulping at a preset fifth pulping speed and a preset fourth pulping period, and heating at a preset fifth low power;

In the embodiment of the present invention, the motor speed in the high-speed pulverizing stage is generally selected from 10000-. Through the foregoing stages, for example: after preheating, pre-crushing and anti-overflow, the material is basically cut into small blocks, and at the moment, high rotating speed is needed for fine crushing. The pulping can be carried out in a way of heating t7s at the fifth low power for N times by pulping t5s and waiting for t6s, so that the crushing degree can meet the requirement. Wherein, each parameter can satisfy: 40< ═ t5< ═ 60, 8< ═ t6< ═ 12, 8< ═ t7< > 20, and N < ═ 5.

In the embodiment of the invention, 10000rpm < ═ 15000rpm, 50s of pulping time, 15000rpm < ═ 20000rpm and 40s of pulping time are satisfied, and the high-speed pulping stage is divided into a plurality of times because the temperature of the pulp is rapidly dissipated due to overlong single time, the temperature is reduced to cause more materials to be sucked into the vortex generator, the noise is obviously increased, and on the other hand, the temperature rise of the motor is overhigh due to overlong single working time of the motor to cause the performance attenuation of the motor, so that the pulp temperature can be kept not to be reduced by controlling 40-50s, and the crushing effect can be ensured. The choice of 40s below 15000 and 50s above 15000rpm is due to the fact that the motor, when running at full power, generates heat which is conducted through the motor housing to the outer wall of the head, which acts as a small heat source, which is always heating the slurry if the single time is too long, and the high speed rotation of the slurry causes the slurry level to rise slowly, with the risk of overflow. The heat above 15000rpm is much higher than below 15000rpm and therefore the single time above 15000rpm is shorter. In addition, the pulp temperature can also be reduced in a waiting stage after pulping, the fifth low power is required to be heated for a period of time before the next pulping to enable the pulp temperature to be raised to above 98 ℃, 1/3 power heating is selected, if the heating power is too high, the pulp can be overflowed when the heating is directly started after the pulp is raised and heated, if the heating power is too low, the effect of temperature loss compensation cannot be achieved, and the noise is large when the motor is started. Also, since the heat generated by the motor above 15000rpm is more, 10s can be selected for the fifth low-power heating time between beating, and 20s can be selected for the motor below 15000rpm, which generates less heat. The waiting time after the beating is finished also needs to ensure that the pulp can fall back to the normal height, and meanwhile, the waiting time cannot be too long to reduce the temperature of the pulp and enable more materials to be deposited at the bottom, and the waiting time can be selected to be 10s because the noise is larger when the motor is started again after the pulp is deposited at the bottom, so that the waiting time can be finely adjusted according to the actual situation. Namely, the temperature of the pulp is maintained to be more than 98 ℃ when the pulping is started each time, meanwhile, enough time is provided to enable the liquid level to fall back to the normal height after the pulping is finished each time, and the single pulping time is controlled to ensure low noise, the crushing effect, the temperature rise of the motor and no overflow.

Example twelve

The embodiment provides a specific implementation mode that different material quantities correspond to different heating times in a formal grinding stage when a food processing flow comprises the formal grinding stage on the basis of the fifth embodiment.

In the embodiment of the present invention, 1/3P may be adopted for the fifth low power heating, and the relationship between the actual material amount and the low power heating time may satisfy the following:

actual material volume <700 ml: the heating time is 8 s;

the actual material amount meets 700-900 ml: the heating time is 15 s;

actual material volume >900 ml: the heating time was 20 s.

In the embodiment of the invention, different material quantities correspond to different heating times, and the more the material quantity is, the longer the corresponding heating time is. The fifth low-power heating is carried out before each beating, so that the pulp temperature is maintained and the pulp flows. If the amount of the low-volume material is selected to be heated for a long time, the slurry foam may rise too fast to increase the risk of overflow, and if the amount of the high-volume material is selected to be heated for a short time, the slurry temperature may drop to cause insufficient fluidity of the slurry, thereby increasing the start-up noise.

In the embodiment of the invention, in the formal crushing stage, the single crushing time can be between 40 and 50 seconds, and the waiting time after the completion of the primary crushing can be controlled within 12 seconds, because the material is changed into fine particles after being crushed at a high speed, if the waiting time is too long, the fine particles can sink to the bottom under the action of gravity, most of the particles can be sucked into the spoiler when the high-speed rotation speed is started again, and the motor load is increased instantly, so that the starting noise is increased. Meanwhile, the low-power heating within 12s is added before starting, so that the inside of the slurry can continuously flow, fine particles cannot settle, and the starting noise is further reduced. The cycle is more than 5 times to ensure that the time of high rotation speed is at least more than 200 s.

EXAMPLE thirteen

This example shows a specific implementation process of the main pulverization stage based on the eleventh or twelfth example.

In the embodiment of the invention, the formal crushing stage can be pulped t8s, waits for t9s, heats t10s at the fifth low power and circulates for N times.

10000rpm & lt 15000rpm, 50s pulping time, 10s waiting, 1/3P heating power and 20s heating time;

15000rpm < beating speed of 20000rpm, beating time of 40s, waiting for 10s, heating power of 1/3P, and heating time of 10 s.

Example fourteen

The embodiment provides an embodiment scheme for determining different pulping processes according to the material quantity on the basis of any embodiment.

In the embodiment of the present invention, the material amount calculated in the preheating stage may be classified, for example: 700 below the first gear, 700 plus 900 above the first gear, the material amount of different gears can correspond to different heating time length, beating time length, power size, etc.

In the embodiment of the invention, the time for heating water with different volumes from 0 ℃ to 100 ℃ under the same heating power is different, and the more the water volume is, the longer the time is. Therefore, the time for heating materials with different capacities from T2 to T3 in the preheating stage is different, different low-power heating time is matched according to different material quantities, the temperature point is guaranteed to be reached in the shortest time, the problem of overflow or overlong period caused by overlong heating time is avoided, and the problem that the temperature point cannot be reached caused by overlong heating time is also avoided.

In the embodiment of the invention, in the pre-crushing stage and the formal crushing stage, the maximization of the pulping efficiency is ensured due to the fact that different capacities correspond to different pulping times, the problems of excessive crushing efficiency and motor temperature rise possibly caused when a high rotating speed corresponds to a low-capacity material for a long time are avoided, and the problem of poor crushing possibly caused by the fact that a high rotating speed corresponds to a high-capacity material for a short time is also avoided.

In the embodiment of the invention, the specific examples of different pulping processes determined according to the material amount can refer to the sixth example, the ninth example and the twelfth example.

Example fifteen

On the basis of any embodiment, the embodiment optimizes the heating control algorithm and provides an embodiment scheme for ensuring that the average heating power output at different voltages is more stable and consistent.

Optionally, the method may further include: and in a preset voltage floating range of the local standard voltage, calculating the number of the half waves required to be conducted in each m half waves under the current working voltage according to the adopted heating power so as to enable the current voltage to reach the equivalent power of the local standard voltage.

In the embodiment of the invention, the equivalent power of 220V can be realized by opening m half-waves every 100 half-waves under the current working voltage according to the required heating power (such as P, P/2, P/3 and P/4) in the range of 175V-265V. Then, the power combination mode (Heat _ H, Heat _ L) and the power working time (Vol _ TH, Vol _ TL) of each gear are determined according to m.

In the embodiment of the present invention, the number of open half waves required for 220V corresponding to the heating power is shown in fig. 6, taking 1/3 power and 240V as examples:

1) number of conduction half waves: m ═ ((220 × 220) × 100 × (1/3))/(240 × 240) ═ 28, i.e., 28 half-waves on and 72 half-waves off at 240V, and equivalent power to 220V is achieved;

2) the number of the conducting half waves is between 25 and 33, so that the combined power of P/4 and P/3 is selected;

3) assuming that the P/4 conduction half wave number is X and the P/3 conduction half wave number is Y, we can obtain:

4X +3Y ═ 100; (total 100 half waves)

X + Y ═ m; (number of conduction half waves)

X can be obtained as 100-3 m; y is 4 m-100;

therefore, the working time of P/4 is 400-12m, and the working time of P/3 is 12-300 m.

In the embodiment of the invention, a comparison graph of a new heating control algorithm and an old heating control algorithm is shown in fig. 7, compared with the original heating algorithm, the scheme of the embodiment of the invention adds a 2P/3 power gear when the power combination mode is selected, which is equivalent to higher resolution of power adjustment, on the other hand, the working time of each gear of power is adjustable, the equivalent power is more accurate than that of the previous mode of fixing 0.5s, and the deviation between high voltage and low voltage and medium voltage is smaller. The heating power consistency is better, the overflow risk is reduced, and the cycle consistency is improved.

Example sixteen

On the basis of any embodiment, the embodiment optimizes a motor control algorithm and provides an embodiment scheme for ensuring more consistent crushing effect when different input voltages are applied.

In the embodiment of the invention, if the working voltage is 175V-265V, 10V can be used as the first gear, and the first gear is divided into 9 gears. And adjusting the corresponding chopping point (starting step number) under the voltage in equal proportion according to the position of the voltage in the gear during beating.

In the embodiment of the invention, in the current motor control algorithm, the same chopping point is taken at the same voltage gear, and because the difference value between the upper limit voltage Umax and the lower limit voltage Umin of each gear is 10V, the higher the voltage in each gear is, the higher the rotating speed is. In the scheme of the embodiment of the invention, the proportion value of the current voltage U in the current gear is calculated as a coefficient, namely (U-Umin)/10, and is synchronously adjusted to the chopping point, namely the low-voltage chopping point of each gear is large and the high-voltage chopping point is small, so that the rotating speeds of different voltages are closer, and the crushing consistency is improved.

In the embodiment of the present invention, a comparison graph of the new and old motor control algorithms is shown in fig. 8, and according to the embodiment of the present invention, the measured rotation speed deviation between the high voltage and the medium voltage at the same chopping point is within 500rpm, so that the consistency is greatly improved.

The beneficial effects of the embodiment of the invention can include:

It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.

Claims

1. A low noise pulping method for a food processor, the method comprising:

heating the slurry to a first preset temperature, starting continuous or intermittent pulping, and heating at a preset low power in the pulping process; the small power includes: power less than or equal to P/2, wherein P is rated heating power; the food processing flow of the food processor comprises the following steps: a preheating stage; the preheating stage is used for heating the slurry from room temperature to a preset temperature value;

the heating of the slurry to a first preset temperature, the continuous or intermittent pulping, and the heating with preset low power in the pulping process comprises the following steps:

heating the slurry from the room temperature to the first preset temperature at the rated heating power P;

heating the pulp from the first preset temperature to a second preset temperature with preset first low-power heating power, and carrying out intermittent pulping at a first pulping speed and a first pulping period;

the first preset temperature is lower than the second preset temperature, and the second preset temperature is lower than the third preset temperature; the first small power is greater than the second small power; the first beating speed is lower than the second beating speed; the cycle duration of the first pulping cycle is less than the cycle duration of the second pulping cycle;

the first small power includes: p/2;

the first beating speed comprises: 800rpm-1500 rpm;

the second small power includes: p/3 or P/4;

when the second low power is P/3, the second beating speed comprises: 1500rpm to 2500 rpm; the second pulping period satisfies: the stirring time is 2s-3s, and the stopping time is 2s-3 s;

when the second low power is P/4, the second beating speed comprises: 2500rpm-3500 rpm; the second pulping period satisfies: the stirring time comprises 3s-4s, and the stopping time comprises 3s-4 s.

2. A method of low noise pulping for a food processor as defined in claim 1, further comprising: and determining different pulping processes according to the material quantity.

3. The low noise pulping method of a food processor of claim 2, wherein the pulping process comprises any one or more of the following: the heating duration of the low power, the power of the low power and the pulping duration;

the heating time length of the low power, the power size of the low power and the beating time length are in direct proportion to the material quantity.

4. A method for low noise pulping in a food processor according to any of claims 1-3, wherein the food processing flow of the food processor further comprises: a pre-crushing stage; the pre-crushing stage is used for primarily crushing food materials in the slurry; the temperature of the slurry in the pre-crushing stage is higher than the first preset temperature;

in the pre-crushing stage, starting continuous or intermittent beating, and heating at a preset low power in the beating process comprises:

wherein the third beating speed is inversely proportional to the first beating time, and the third low power is proportional to the third beating speed.

5. A low noise pulping process in a food processor according to claim 4,

the third beating speed includes: 4000rpm to 6000 rpm;

the first pulping time period comprises: 40s-50 s;

the third small power includes: 80-120W.

6. A method for low noise pulping in a food processor according to any of claims 1-3, wherein the food processing flow of the food processor further comprises: an anti-overflow collision stage; the anti-overflow stage is a stage in which the serous fluid continuously or intermittently touches a preset anti-overflow electrode; the temperature of the slurry in the anti-overflow collision stage is higher than the first preset temperature;

in the anti-overflow stage, the continuous or intermittent beating is started, and the heating with the preset low power in the beating process comprises the following steps:

wherein the fourth beating speed is proportional to the cycle time of the third beating cycle, and the fourth low power is proportional to the fourth beating speed.

7. A method for low noise pulping in a food processor according to any of claims 1-3, wherein the food processing flow of the food processor further comprises: a formal crushing stage; the formal crushing stage is a stage of beating at a preset high rotating speed to further crush the blocky materials; the temperature of the slurry in the formal crushing stage is higher than the first preset temperature; the high rotating speed is the rotating speed which is more than or equal to 10000 rpm;

in the formal crushing stage, starting continuous or intermittent beating, and heating at a preset low power in the beating process comprises:

wherein the fifth beating speed is inversely proportional to the beating time period in the fourth beating cycle, and the fifth low-power heating time period is inversely proportional to the fifth beating speed.

8. A method of low-noise pulping for a food processor according to any of claims 1 to 3, characterized in that the method further comprises:

and in a preset voltage floating range of the local standard voltage, calculating the number of half waves required to be conducted in each m half waves under the current working voltage according to the adopted heating power so as to enable the current voltage to reach the equivalent power of the local standard voltage.