CN112821847B - Motor control method for garbage disposer - Google Patents
Motor control method for garbage disposer Download PDFInfo
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- CN112821847B CN112821847B CN202011641261.3A CN202011641261A CN112821847B CN 112821847 B CN112821847 B CN 112821847B CN 202011641261 A CN202011641261 A CN 202011641261A CN 112821847 B CN112821847 B CN 112821847B
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- motor
- rotating speed
- duty ratio
- garbage disposer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/20—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors for controlling one motor used for different sequential operations
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Abstract
The invention relates to the technical field of garbage disposer motor control methods, in particular to a garbage disposer motor control method, which comprises the following steps that a, the rotating speed N0 of a motor spindle when no load exists under the normal input voltage of a motor used by a product and the rotating speed N1 of the motor spindle when the load is rated are determined through testing; b, testing the actual rotating speed N of the motor during working; and c, when N < N1< N0, keeping the duty ratio of the voltage input to the motor terminal to be D1, and when N0> N > N1, reducing the duty ratio of the voltage input to the motor terminal to be D2, wherein D2 is less than D1. Judging whether the motor is in an unloaded state or a loaded state according to the relation among the actual rotating speed N, the unloaded rotating speed N0 and the rated load rotating speed N1, adjusting the duty ratio input to the voltage of the motor terminal according to the loaded or unloaded state, and reducing the duty ratio input to the voltage of the motor terminal if the motor is in the unloaded state, thereby effectively reducing the noise generated by the high-speed rotation of the food waste disposer in the unloaded state and reducing the energy consumption.
Description
Technical Field
The invention relates to the technical field of garbage disposer motor control, in particular to a garbage disposer motor control method.
Background
After the existing food waste disposer is started, no matter whether food waste exists in the garbage disposer, the voltage obtained by a motor is fixed, so that the working mode not only can cause energy waste, but also can cause higher rotating speed of a smashing mechanism due to no resistance in the garbage disposer under the condition of no load, thereby generating great noise and influencing the use experience of consumers.
Voltage duty ratio: generally, the voltage input from the outside is continuously stable, which is 1 or 100%, and the voltage input to the motor can be controlled to be unstable with the development of various control technologies, and the voltage can be present for a period of time or absent for a period of time, and the ratio of the time with the voltage to the whole time is the duty ratio.
Disclosure of Invention
The invention aims to provide a garbage disposer motor control method aiming at the existing defects.
The purpose of the invention is realized by the following technical scheme: the application provides a garbage disposer motor control method, which comprises the following steps:
step a, determining the rotating speed N0 of a motor spindle when no load exists under the normal input voltage of a motor used by a product and the rotating speed N1 of the motor spindle when the load is rated through testing;
b, testing the actual rotating speed N of the motor during working;
and c, when N < N1< N0, keeping the duty ratio of the voltage input to the motor terminal to be D1, and when N0> N > N1, reducing the duty ratio of the voltage input to the motor terminal to be D2, wherein D2 is less than D1.
In the step c, a threshold value delta is set, if the actual rotating speed N-N1 is larger than the threshold value delta, the duty ratio of the voltage input to the motor end is reduced to D3 again, and if the actual rotating speed falls back to N-N1 which is smaller than the threshold value delta, the duty ratio of the voltage input to the motor end is increased to D2; d3 is more than D2 and less than D1.
And when the N is continuously larger than the N1 or the N1+ delta, the duty ratio is continuously switched between the D2 and the D3 for a certain time S1, and the motor is controlled to be stopped.
In step C, a threshold rotation speed C is set, and the motor is controlled to stop when the duty ratio of the motor is continuously D1 in time S2 but continuously N < C.
In step a, 0.5n0 or yarn n1 or yarn n 0.7n0 may be set.
Wherein, C <0.3N0.
Wherein S2<60 seconds.
Wherein S1<60 seconds.
The invention has the beneficial effects that: according to the garbage disposer motor control method, the motor is judged to be in a no-load state or a load state by detecting the actual rotating speed N of the motor according to the relation between the actual rotating speed N, the no-load rotating speed N0 and the rated load rotating speed N1, the duty ratio of the voltage of the input terminal of the motor is adjusted according to the load or no-load state, and if the motor is in the no-load state, the duty ratio of the voltage of the input terminal of the motor is reduced, so that the noise generated by high-speed rotation of the food garbage disposer in the no-load state can be effectively reduced, the use experience of a user is enhanced, the energy consumption is reduced, the garbage disposer can be controlled to be automatically shut down in a period of no-load, and therefore the garbage disposer is automatically shut down after being smashed; if the motor is in a load state, the duty ratio of the voltage input to the motor is kept, the power of the motor is ensured, and the smashing effect is ensured.
Overload can be judged when the rotating speed of the motor is continuously low under the condition of high duty ratio, and automatic shutdown can be set for more than a period of time so as to protect the motor from being burnt out.
Detailed Description
The invention is further described with reference to the following examples.
Example 1
One of the specific implementation modes of the garbage disposer motor control method comprises the following steps:
step a, determining the rotation speed N0 of a motor spindle under the normal input voltage of a motor used by a product when no load exists and the rotation speed N1 of the motor spindle under the rated load through testing, wherein N0 is the rotation speed of the motor spindle under the no load, and N1 is the rotation speed of the rated load.
And b, testing the actual rotating speed N of the motor during working.
And c, when the actual rotating speed N is less than the rated load rotating speed N1 and less than the no-load rotating speed N0, keeping the duty ratio input to the terminal voltage of the motor to be D1.
After the garbage disposer is powered on, the duty ratio of the voltage input to the motor end is D1, if no load exists in the cavity, the rotating speed can be continuously increased, when N0> N > N1, the duty ratio of the voltage input to the motor end is reduced to D2, and if the voltage continues to be increased to N > N1+ delta, the voltage duty ratio is further reduced to D3.
When food residues or running water are put into the garbage disposer, the food residues or the running water can generate certain resistance to a main shaft of the motor, so that the load of the main shaft of the motor is increased, the rotating speed can be reduced, the duty ratio of the voltage input to the motor end can be increased, the power and the torque of the motor are increased, the motor is ensured to have enough torsional force to keep normal work, and the motor is prevented from being locked. After the food waste is completely treated, the load of the food waste disposer is reduced, the food waste disposer enters an idle state, and the rotating speed of a main shaft of the food waste disposer is increased when the resistance of a motor is eliminated. Therefore, the load condition of the food waste disposer can be judged by detecting the rotating speed of the motor.
In the operation process of the garbage disposer motor, the actual rotating speed N is detected, and the actual rotating speed N is compared with the no-load rotating speed N0 and the rated load rotating speed N1. And if the actual rotating speed N is less than the rated load rotating speed N1 and less than the no-load rotating speed N0, judging that the food waste disposer is in a load state, and keeping the duty ratio of the voltage input to the motor end unchanged so as to ensure that the motor has enough torque to treat the residues. If the no-load rotating speed N0 is greater than the actual rotating speed N is greater than the rated load rotating speed N1, the garbage disposer is judged to be in an idle state, the duty ratio of the voltage input to the motor end is controlled to be reduced to D2, and D2 is smaller than D1, so that energy is saved, and generated noise is reduced.
Specifically, the magnitude relation ratio of the actual rotation speed N, the rated load rotation speed N1, and the no-load rotation speed N0 may be set to N1=0.6n0 and Δ =0.2n0, and may be adjusted and set according to actual requirements.
C =0.2n0, S1=30 seconds, and S2=30 seconds, which can be adjusted according to actual conditions.
Example 2
The second embodiment of the motor control method of the garbage disposer of the invention comprises the following steps:
step a, determining the rotation speed N0 of a motor spindle under the normal input voltage of a motor used by a product when no load exists and the rotation speed N1 of the motor spindle under the rated load through testing, wherein N0 is the rotation speed of the motor spindle under the no load, and N1 is the rotation speed of the rated load.
And b, testing the actual rotating speed N of the motor during working.
Step c, setting a threshold value delta,
if the actual rotating speed N is less than the rated load rotating speed N1 and less than the no-load rotating speed N0, keeping the duty ratio of the voltage input to the motor end to be D1;
if the no-load rotating speed N0 is greater than the actual rotating speed N and greater than the rated load rotating speed N1, and the actual rotating speed N-the rated load rotating speed N1 is less than a threshold value delta, reducing the duty ratio input to the terminal voltage of the motor to be D2;
if the no-load rotating speed N0 is greater than the actual rotating speed N is greater than the rated load rotating speed N1, and the actual rotating speed N-the rated load rotating speed N1 is greater than the threshold value delta, reducing the duty ratio input to the terminal voltage of the motor to be D3; d3 is more than D2 and less than D1.
In the operation process of a motor of the garbage disposer, the actual rotating speed N is detected, and the actual rotating speed N is compared with the no-load rotating speed N0 and the rated load rotating speed N1. When the actual rotating speed N is larger than the rated load rotating speed N1, and the actual rotating speed N-the rated load rotating speed N1 is larger than the threshold value delta, the fact that the actual rotating speed N is too high is proved, the motor needs to be controlled by a lower duty ratio, the motor is quickly stabilized, energy is saved, and generated noise is reduced.
In addition, when the relation of the actual rotating speed N > the rated load rotating speed N1 or the rated load rotating speed > N1+ the threshold value delta continuously appears in the time S1, and the duty ratio is continuously switched between the D2 and the D3 in the time S1, the motor is controlled to stop. S1=30 seconds, which can also be set according to actual requirements.
During the operation process of a motor of the garbage disposer, the actual rotating speed N is always greater than the rated load rotating speed N1 or the rated load rotating speed N1+ the threshold delta within a period of time S1, the duty ratio of the voltage input to the two ends of the motor is continuously switched between D2 and D3 within the time S1, the fact that the residue is broken is proved to be finished, the motor is controlled to stop, the motor is prevented from working for a long time in a no-load state, the service life of the motor is prolonged, energy is saved, and the generated noise is reduced.
Example 3
The third specific implementation mode of the garbage disposer motor control method comprises the following steps:
step a, determining the rotation speed N0 of a motor spindle under the normal input voltage of a motor used by a product when no load exists and the rotation speed N1 of the motor spindle under the rated load through testing, wherein N0 is the rotation speed of the motor spindle under the no load, and N1 is the rotation speed of the rated load.
And b, testing the actual rotating speed N of the motor during working.
Step C, setting a threshold rotating speed C,
if the no-load rotating speed N0 is larger than the actual rotating speed N is larger than the rated load rotating speed N1, reducing the duty ratio input to the terminal voltage of the motor to be D2;
and if the actual rotating speed N is less than the rated load rotating speed N1 and less than the no-load rotating speed N0, controlling the motor to stop when the duty ratio of the motor is continuously D1 within the time S2 and the actual rotating speed N is less than the threshold C continuously.
In the operation process of the motor of the garbage disposer, the actual rotating speed N is always less than the threshold value C within a period of time S2, and the motor always operates for the time S2 at a higher duty ratio D1, so that the situation that the motor is possibly locked or jammed is proved, therefore, the motor is controlled to stop, the motor is prevented from being burnt out due to the fact that the motor still works in a locked state, the service life of the motor is prolonged, and the safety is enhanced. Wherein, S2=30 seconds, can also be adjusted according to actual conditions.
The above embodiments are only used for illustrating the technical solution of the present invention, and should not be taken as limiting the structure of the present invention. Through the embodiment, a person skilled in the art can obtain technical modes with equivalent use effects through simple modification or equivalent replacement, and the technical modes are considered to fall within the protection scope of the technical right of the invention.
Claims (7)
1. A garbage disposer motor control method is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
step a, determining the rotating speed N0 of a motor spindle when no load exists under the normal input voltage of a motor used by a product and the rotating speed N1 of the motor spindle when the load is rated through testing;
b, testing the actual rotating speed N of the motor during working;
step c:
when N < N1< N0, keeping the duty ratio of the voltage input to the motor terminal to be D1,
when N0> N > N1, the duty ratio of the voltage input to the motor terminal is reduced to D2,
D2＜D1；
and in step C, setting a threshold rotating speed C, controlling the motor to stop when the duty ratio of the motor is continuously D1 in time S2 and N is continuously less than C.
2. The garbage disposer motor control method of claim 1, wherein: in step c, when N is greater than N1, setting a threshold value delta, if the actual rotating speed N-N1 is greater than the threshold value delta, reducing the duty ratio of the voltage input to the motor end to be D3 again, and if the actual rotating speed falls back to N-N1 which is less than the threshold value delta, increasing the duty ratio of the voltage input to the motor end to be D2; d3 is more than D2 and less than D1.
3. The garbage disposer motor control method of claim 2, wherein: and when N is continuously larger than N1 or N1+ delta, the duty ratio is continuously switched between D2 and D3 for a certain time S1, and the motor is controlled to stop.
4. The garbage disposer motor control method of claim 1, wherein: in step a, 0.5n0 yarn bundles n1 yarn bundles 0.7n0 may be set.
5. The garbage disposer motor control method of claim 1, wherein: c <0.3n0.
6. The garbage disposer motor control method of claim 1, wherein: s2<60 seconds.
7. The garbage disposer motor control method of claim 3, wherein: s1<60 seconds.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011641261.3A CN112821847B (en) | 2020-12-31 | 2020-12-31 | Motor control method for garbage disposer |
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| CN202011641261.3A CN112821847B (en) | 2020-12-31 | 2020-12-31 | Motor control method for garbage disposer |
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| CN112821847A CN112821847A (en) | 2021-05-18 |
| CN112821847B true CN112821847B (en) | 2023-03-14 |
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| CN115138469B (en) * | 2022-07-05 | 2023-08-15 | 佛山市扎尔电器科技有限公司 | Intelligent shutdown method of food waste disposer |
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| JPH0894156A (en) * | 1994-09-27 | 1996-04-12 | Toshiba Corp | Controlling device of blower in air conditioner |
| CN105262408B (en) * | 2015-11-23 | 2017-11-17 | 珠海格力电器股份有限公司 | The control method and system of a kind of motor |
| CN105435917B (en) * | 2015-12-22 | 2019-01-22 | 珠海格力电器股份有限公司 | A kind of food refuse disposer and its control method |
| US20210050807A1 (en) * | 2018-03-07 | 2021-02-18 | Guangdong Midea Consumer Electric Manufacturing Co., Ltd. | Food processor and rotational speed increase control method and apparatus therefor |
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