CN114448326B - Method for controlling overheating and noise reduction of motor of wall breaking machine - Google Patents

Method for controlling overheating and noise reduction of motor of wall breaking machine Download PDF

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CN114448326B
CN114448326B CN202210168297.7A CN202210168297A CN114448326B CN 114448326 B CN114448326 B CN 114448326B CN 202210168297 A CN202210168297 A CN 202210168297A CN 114448326 B CN114448326 B CN 114448326B
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current value
value
food
wall breaking
stage
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CN114448326A (en
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龚盛鹏
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Guangzhou Chuangqi Industrial Co ltd
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/20Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors for controlling one motor used for different sequential operations
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J43/00Implements for preparing or holding food, not provided for in other groups of this subclass
    • A47J43/04Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
    • A47J43/07Parts or details, e.g. mixing tools, whipping tools
    • A47J43/08Driving mechanisms
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/02Providing protection against overload without automatic interruption of supply
    • H02P29/032Preventing damage to the motor, e.g. setting individual current limits for different drive conditions
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/40Regulating or controlling the amount of current drawn or delivered by the motor for controlling the mechanical load

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Food-Manufacturing Devices (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Automatic Control Of Machine Tools (AREA)

Abstract

The invention discloses a method for controlling overheating and noise reduction of a motor of a wall breaking machine, which comprises the following steps of dividing the process of crushing food by the wall breaking machine into an initial stage, a transition stage and a completion stage, and respectively setting the standard working current value of the corresponding stage as I 1 、I 2 And I 3 (ii) a Extracting the actual current value I in the control circuit of the wall breaking machine 0 (ii) a The actual current value I 0 And the standard working current value I 1 、I 2 And I 3 And comparing, substituting the set expected value, and working at the preset current value of the corresponding stage. The invention prevents the risk of heating, service life reduction or burning caused by overcurrent of the motor and protects the motor and products on one hand, and reduces the noise by reducing the rotating speed on the other hand, thereby achieving the purpose of noise reduction.

Description

Method for controlling overheating and noise reduction of motor of wall breaking machine
Technical Field
The invention relates to the technical field of motor control, in particular to a method for controlling overheating and noise reduction of a motor of a wall breaking machine.
Background
The wall breaking machine is also called as a wall breaking food processor, integrates the functions of a juice extractor, a soybean milk machine, an ice cream machine, a food processor, a grinding machine and other products, completely achieves the multi-purpose function of one machine, and can instantly break the cell walls of food and release phytochemicals.
In order to pulverize food finer and easier to absorb, high rotational speed wall breaking machines have emerged. However, the increase of the rotation speed tends to bring about a rapid increase of the load of the motor in operation and an increase of the noise of the product. The rapid increase of the load will generate a large current, which in turn will generate a large amount of heat in the motor coil, which will bring about two hazards: on one hand, the enameled wire of the motor coil generates peculiar smell due to a large amount of heat, so that the whole product emits peculiar smell and the body health of people is influenced; on the other hand, the large amount of heat shortens the life of the motor and may even cause the motor to easily burn or cause a risk of fire in the entire product. In addition, the increase of noise causes environmental pollution, so that the people can generate dysphoric mood and the normal life of the people is influenced.
In order to solve the above mentioned problems, most of the existing wall breaking machines adopt a multi-gear design, i.e. the rotating speeds of different gears are different, and different foods are crushed at different rotating speeds. Although the problems of overheating and excessive noise of the motor are solved to a great extent, the motor still works at a certain fixed output power in the whole working process of each gear, namely the motor only passively changes the rotating speed after receiving the change of the load, and does not intelligently select a proper rotating speed to work according to the crushing result, so the generated noise and the heating of a circuit are still at the maximum level of the gear, and the effect is not ideal.
Disclosure of Invention
The invention aims to provide a method for controlling overheating and noise reduction of a motor of a wall breaking machine, which solves the following technical problems:
the motor can not automatically adjust the rotating speed according to the state of food, the generated noise and the heating of the circuit are still at the maximum level of the gear, and the effect is not ideal enough.
The purpose of the invention can be realized by the following technical scheme:
a method for controlling overheating and noise reduction of a motor of a wall breaking machine comprises the following steps:
dividing the process of crushing food by a wall breaking machine into an initial stage, a transition stage and a finishing stage, and respectively setting the standard working current value of the corresponding stage as I 1 、I 2 And I 3
Extracting the actual current value I in the control circuit of the wall breaking machine 0
The actual current value I 0 And the standard working current value I 1 、I 2 And I 3 And comparing, substituting the set expected value, and operating at the preset current value of the corresponding stage.
As a further scheme of the invention: the actual current value I 0 And the standard working current value I 1 、I 2 And I 3 The comparison of (a) is specifically calculated in a linear piecewise function manner as follows:
Figure BDA0003517500750000021
wherein, I Input device Is the output in the comparison process.
As a further aspect of the invention: the standard working current value I 1 、I 2 And I 3 The specific calculation, in relation to the working time, is shown in the following table:
Figure BDA0003517500750000022
Figure BDA0003517500750000031
as a further scheme of the invention: the standard current value I 3 <I 2 <I 1 And when the detected current value is larger than the standard current threshold value, the detected current value is equal to the standard current threshold value, and the current threshold value is smaller than the rated current value.
As a further scheme of the invention: the preset current value is the actual current value I 0 And the standard working current value I 1 、I 2 And I 3 The expected value obtained after comparison is obtained as the actual current value I 0 ≤I 3 When the current is measured, the expected value is the actual current value I 0
As a further scheme of the invention: in the dividing process of the actual food crushing stage of the wall breaking machine, the current parameter is prior to the time parameter, and the wall breaking machine works at the preset current value of the corresponding stage after being started.
As a further scheme of the invention: extracting the hardness information of the food, and when the hardness of the food is larger than the maximum value in the set threshold interval, enabling the standard current value of the current working stage to be equal to the standard current value of the next working state; and when the hardness of the food is smaller than the minimum value in the set threshold interval, enabling the standard current value of the current working stage to be equal to the measured current value.
As a further scheme of the invention: extracting the quality data of the food, and when the total mass of the food is larger than the maximum value in the set threshold interval, making the standard current value of the current working stage equal to the standard current value of the next working state; and when the total mass of the food is smaller than the minimum value in the set threshold interval, enabling the standard current value of the current working stage to be equal to the measured current value.
As a further scheme of the invention: extracting the viscosity data of the food, and when the viscosity of the food is greater than the maximum value in the set threshold interval, enabling the standard current value of the current working stage to be equal to the standard current value of the next working state; and when the viscosity of the food is smaller than the minimum value in the set threshold interval, enabling the standard current value of the current working stage to be equal to the measured current value.
The invention has the beneficial effects that: size data of the inside pending food of broken wall machine is obtained through the analytic data, thereby obtain the current working phase of broken wall machine according to the particle size of food, obtain the standard current value in this stage according to the current working phase of broken wall machine, thereby further restrict the actual current value in the circuit, thereby indirectly know the rotational speed, and then come to control electric current and rotational speed according to the concrete state of food, prevented on the one hand that the motor from overflowing and arousing to generate heat, the life-span reduces or the risk of burning out, motor and product have been protected, on the other hand, the rotational speed descends, the noise has been reduced, thereby reach the purpose of making an uproar.
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The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic flow diagram of a method for controlling overheating and noise reduction of a motor of a wall breaking machine according to a preferred embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Along with the improvement of living standard, different types of electric small household appliances also appear, and a high-rotation-speed wall breaking machine is provided for crushing food to be finer and easy to absorb. However, the increase of the rotation speed inevitably brings about rapid increase of the load and increase of the noise of the product during the operation of the motor. The rapid increase in load will generate a large current which in turn will generate a large amount of heat in the motor coil, which can cause two hazards: on one hand, a large amount of heat causes the enameled wire of the motor coil to generate peculiar smell, so that the whole product emits the peculiar smell and the body health of people is influenced; on the other hand, a large amount of heat can shorten the service life of the motor, and even the motor is easy to burn or cause the risk of fire of the whole product, so that the whole product is invalid and loss is brought. The increase of noise causes environmental pollution, which causes the people to have a fussy mood and influences the normal life of the people.
As a wall breaking machine adopting a high-speed motor, a measure in the aspect that the motor generates large heat to reduce the service life of a product is generally to install a heat protection switch on the motor, when the motor generates large heat due to overcurrent, the heat protection switch can disconnect a circuit to stop the product, and when the temperature of the motor is reduced, the switch is connected with the circuit again to continue working. Regarding the noise aspect, the noise of the wall breaking machine mainly comes from the following aspects: firstly, the noise generated by the high-speed running of the motor; secondly, the blade crushes the food and generates noise when colliding with the food; thirdly, the blade drives the water flow to rotate at a high speed and the water flow and the food collide with the cup to generate noise; fourth, the motor operates at high speed, producing resonant noise with the machine. Therefore, most methods for reducing noise adopt a structure designed with vibration damping and sound insulation, such as adding damping rubber and soundproof cotton, which inevitably brings about a great increase in cost.
In order to reconcile the contradiction between the two aspects, most of the existing wall breaking machines adopt a multi-gear design, namely, the rotating speeds of different gears are different, and different foods are crushed at different rotating speeds. Although the problems of overheating and excessive noise of the motor are solved to a great extent, the motor still works at a certain fixed output power in the whole working process of each gear, namely the motor only passively changes the rotating speed under the change of load, and does not intelligently select a proper rotating speed to work according to the crushing result, so the generated noise is at the maximum level of the gear. Therefore, to sum up, can find a technique or method, can reduce and can make the broken wall machine lower in the noise ratio under higher rotational speed again because of the too big product life that leads to of electric current, and can be according to the broken wall machine at different working stages or according to the edible material of difference, select different rotational speeds intelligently, become the problem that the broken wall machine trade is used for awaiting solution.
Referring to fig. 1, the present invention is a method for controlling overheating and noise reduction of a motor of a wall breaking machine, comprising the following steps:
dividing the process of crushing food by a wall breaking machine into an initial stage, a transition stage and a finishing stage, and respectively setting the standard working current value of the corresponding stage as I 1 、I 2 And I 3
Extracting the actual current value I in the control circuit of the wall breaking machine 0
The actual current value I 0 And the standard working current value I 1 、I 2 And I 3 And comparing, substituting the set expected value, and working at the preset current value of the corresponding stage.
It will be appreciated that the actual current value I is described 0 And the standard working current value I 1 、I 2 And I 3 The comparison of (a) is specifically calculated in a linear piecewise function manner as follows:
Figure BDA0003517500750000061
wherein, I Input the method Is the output in the comparison process.
It is noted that the standard operating current value I is 1 、I 2 And I 3 The specific calculation method is shown in the following table in relation to the working time:
Figure BDA0003517500750000062
it will be understood that the specific food items referred to in this embodiment are food items of standard firmness, standard quality and standard consistency, and that I 1 、I 2 And I 3 It is the nominal current that needs to be carried out to crush the particular food in question, i.e. the desired value.
In another case of this embodiment, the standard current value I is 3 <I 2 <I 1 And when the detected current value is larger than the standard current threshold value, the detected current value is equal to the standard current threshold value, and the current threshold value is smaller than the rated current value.
It is understood that the preset current value is the actual current value I 0 And the standard working current value I 1 、I 2 And I 3 The expected value obtained after comparison is obtained as the actual current value I 0 ≤I 3 When the current is larger than the predetermined value, the expected value is the actual current value I 0
In another preferred embodiment of the present invention, in the dividing process of the actual food crushing stage of the wall breaking machine, the current parameter is prior to the time parameter, and the wall breaking machine operates at a current value preset in the corresponding stage after being started.
In another preferred embodiment of the present invention, the hardness information of the food is extracted, and when the hardness of the food is greater than the maximum value in the set threshold interval, the standard current value of the current working stage is made equal to the standard current value of the next working state; and when the hardness of the food is smaller than the minimum value in the set threshold interval, enabling the standard current value of the current working stage to be equal to the measured current value.
In another preferred embodiment of the present invention, the quality data of the food is extracted, and when the total mass of the food is greater than the maximum value in the set threshold interval, the standard current value of the current working stage is made equal to the standard current value of the next working state; and when the total mass of the food is smaller than the minimum value in the set threshold interval, enabling the standard current value of the current working stage to be equal to the measured current value.
In another preferred embodiment of the present invention, the viscosity data of the food is extracted, and when the viscosity of the food is greater than the maximum value in the set threshold interval, the standard current value of the current working stage is made equal to the standard current value of the next working state; and when the viscosity of the food is smaller than the minimum value in the set threshold interval, enabling the standard current value of the current working stage to be equal to the measured current value.
It is understood that in the above three embodiments, the consistency, quality and hardness of the food are individually defined, and in the normal case, that is, when the consistency, quality and hardness of the food are within the set threshold value interval, the standard current value is not changed.
It is worth noting that the viscosity, quality and hardness of the food are very important factors influencing the operation of the wall breaking machine, and when the viscosity, quality and hardness of the food exceed the set standard values, the viscosity, quality and hardness of the food can greatly influence the whole operation of the wall breaking machine, so that the current is correspondingly adjusted according to the change of the three factors.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (4)

1. A method for controlling overheating and noise reduction of a motor of a wall breaking machine is characterized by comprising the following steps:
the process of crushing food by a wall breaking machine is divided into an initial stage, a transition stage and a completion stageAnd respectively setting the standard working current values of the corresponding stages as I 1 、I 2 And I 3
Extracting the actual current value I in the control circuit of the wall breaking machine 0
The actual current value I 0 And the standard working current value I 1 、I 2 And I 3 Comparing, substituting the set expectation value, and working at the preset current value of the corresponding stage;
the actual current value I 0 And the standard working current value I 1 、I 2 And I 3 The comparison of (a) is specifically calculated in a linear piecewise function manner as follows:
Figure DEST_PATH_IMAGE002
wherein, I Input device Is an expected value in the comparison process;
the standard working current value I 1 、I 2 And I 3 The specific calculation, in relation to the working time, is shown in the following table:
phases Time/minute Electric current Current value taking Initial stage 0-1.5 I 1 I 1 Is specially crushed by a wall breaking machineWhen food is eaten, the average value of the current is obtained within 1.5 minutes after the food is started to work; transition phase 1.5-4 I 2 I 2 When a wall breaking machine is used for crushing specific food, the average value of current is obtained within the time from 1.5 minutes to 4 minutes; completion phase 4-end of I 3 I 3 When a wall breaking machine is used for crushing specific food, the average value of current from 4 minutes to the end of the work is obtained;
the standard working current value I 3 <I 2 <I 1 When the actual current value is larger than the set standard working current value, the actual current value is equal to the standard working current value, and the standard working current value is smaller than the rated current value;
the preset current value is the actual current value I 0 And the standard working current value I 1 、I 2 And I 3 The expected value obtained after comparison is obtained as the actual current value I 0 ≤I 3 When the current is measured, the expected value is the actual current value I 0
In the dividing process of the actual food crushing stage of the wall breaking machine, the current parameter is prior to the time parameter, and the wall breaking machine works at the preset current value of the corresponding stage after being started.
2. The method for controlling overheating and noise reduction of a motor of a wall breaking machine according to claim 1, wherein hardness information of the food is extracted, and when the hardness of the food is greater than a maximum value within a set threshold interval, a standard working current value of a current working stage is made equal to a standard working current value of a next working state; and when the hardness of the food is smaller than the minimum value in the set threshold interval, the standard working current value of the current working stage is equal to the actual current value.
3. The method for controlling overheating and noise reduction of a motor of a wall breaking machine according to claim 1, wherein the quality data of the food are extracted, and when the total mass of the food is greater than the maximum value in the set threshold interval, the standard working current value of the current working stage is made equal to the standard working current value of the next working state; and when the total mass of the food is smaller than the minimum value in the set threshold interval, the standard working current value of the current working stage is equal to the actual current value.
4. The method for controlling overheating and noise reduction of a motor of a wall breaking machine according to claim 1, wherein the viscosity data of the food is extracted, and when the viscosity of the food is greater than a maximum value in a set threshold interval, a standard working current value of a current working stage is made equal to a standard working current value of a next working state; and when the viscosity of the food is smaller than the minimum value in the set threshold interval, the standard working current value of the current working stage is equal to the actual current value.
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CN102273934B (en) * 2011-05-27 2015-05-20 浙江绍兴苏泊尔生活电器有限公司 Multifunctional operation mode grinding soybean milk machine and speed-regulating grinding method thereof
CN105982523B (en) * 2015-01-28 2018-11-20 佛山市顺德区美的电热电器制造有限公司 The control method of cooking apparatus
TWI625929B (en) * 2017-07-20 2018-06-01 益航電子股份有限公司 Motor apparatus and motor driving circuit
CN110870661B (en) * 2018-08-31 2021-11-19 佛山市顺德区美的电热电器制造有限公司 Fan operation control method and device, fan, cooking appliance and storage medium
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Denomination of invention: A method for controlling the overheating and noise reduction of the wall breaking machine motor

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