CN110762576A - Noise reduction method and device for range hood, range hood and storage medium - Google Patents
Noise reduction method and device for range hood, range hood and storage medium Download PDFInfo
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- CN110762576A CN110762576A CN201911067003.6A CN201911067003A CN110762576A CN 110762576 A CN110762576 A CN 110762576A CN 201911067003 A CN201911067003 A CN 201911067003A CN 110762576 A CN110762576 A CN 110762576A
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- 238000000034 method Methods 0.000 title claims abstract description 57
- 230000009467 reduction Effects 0.000 title claims abstract description 46
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 97
- 239000000779 smoke Substances 0.000 claims abstract description 85
- 230000008859 change Effects 0.000 claims description 28
- 230000001133 acceleration Effects 0.000 claims description 22
- 230000003116 impacting effect Effects 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000003517 fume Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 238000005070 sampling Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2035—Arrangement or mounting of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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Abstract
The invention discloses a noise reduction method and device for a range hood, the range hood and a storage medium. The method comprises the following steps: receiving a close signal; according to the closing signal, a variable frequency motor of the cigarette machine is closed, a smoke collecting cover of the cigarette machine is provided with a smoke collecting port and a fan, and the variable frequency motor is used for driving the fan; collecting the rotating speed of the variable frequency motor; determining the state of the variable frequency motor according to the rotating speed; according to inverter motor's state is closed the baffle of cigarette machine, the baffle is used for sheltering from the collection mouth shelters from the collection mouth of collection petticoat pipe, avoids closing under the condition of baffle when the frequency conversion cigarette machine is closed, and the cigarette machine cavity is inside because the surge of air current causes inside to produce unpleasant noise, strikes the noise that the baffle caused when can reduce the interior suction fan of collection petticoat pipe and adsorb the air current.
Description
Technical Field
The embodiment of the invention relates to the technical field of noise reduction of a cigarette making machine, in particular to a noise reduction method and device of a cigarette making machine, the cigarette making machine and a storage medium.
Background
The range hood is a device for pumping and exhausting smoke, and for example, a range hood is taken as an example, and nowadays, the range hood becomes one of essential kitchen appliances in the life of residents. The traditional range hood adopts an alternating current motor, and the regulation of the rotating speeds of the motors in multiple levels (for example, the rotating speeds of the motors are set to be high, medium and low three gears) is realized by arranging a plurality of groups of coils in the motors, so that the stepless speed regulation can not be realized. The variable frequency range hood adopts a variable frequency motor, and the rotating speed of the motor can be automatically adjusted according to the size of oil smoke in a kitchen, so that stepless speed regulation is realized.
The existing variable frequency range hood closes the baffle when the variable frequency motor is closed. After the baffle is closed, the motor in the range hood still does not stop rotating, and unpleasant noise is generated inside the cavity of the variable frequency range hood due to surging of airflow.
Disclosure of Invention
The invention provides a noise reduction method and device for a smoke machine, the smoke machine and a storage medium, which are used for reducing noise caused by impacting a baffle plate when an exhaust fan in a smoke collection hood adsorbs airflow.
In a first aspect, an embodiment of the present invention provides a noise reduction method for a cigarette making machine, which is applied to the cigarette making machine, and includes:
receiving a close signal;
according to the closing signal, a variable frequency motor of the cigarette machine is closed, a smoke collecting cover of the cigarette machine is provided with a smoke collecting port and a fan, and the variable frequency motor is used for driving the fan;
collecting the rotating speed of the variable frequency motor;
determining the state of the variable frequency motor according to the rotating speed;
and closing a baffle of the cigarette machine according to the state of the variable frequency motor, wherein the baffle is used for shielding the cigarette collecting port.
In a second aspect, an embodiment of the present invention further provides a noise reduction device for a cigarette making machine, where the noise reduction device is applied to a cigarette making machine, and the noise reduction device includes:
a closing signal receiving module for receiving a closing signal;
the motor closing module is used for closing a variable frequency motor of the cigarette machine according to the closing signal, a smoke collecting cover of the cigarette machine is provided with a smoke collecting port and a fan, and the variable frequency motor is used for driving the fan;
the rotating speed acquisition module is used for acquiring the rotating speed of the variable frequency motor;
the state determining module is used for determining the state of the variable frequency motor according to the rotating speed;
and the baffle closing module is used for closing a baffle of the cigarette machine according to the state of the variable frequency motor, and the baffle is used for shielding the cigarette collecting port.
In a third aspect, an embodiment of the present invention further provides a cigarette making machine, including:
one or more processors;
storage means for storing one or more programs;
the smoke collecting hood is provided with a smoke collecting port and a ventilator;
the variable frequency motor is used for driving the exhaust fan;
the baffle is used for shielding the smoke collecting port;
when executed by the one or more processors, cause the one or more processors to implement a method of noise reduction for a range hood as provided by the first aspect of the invention.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the noise reduction method for a cigarette making machine according to the first aspect of the present invention.
According to the noise reduction method for the range hood, provided by the embodiment of the invention, after the variable frequency motor of the range hood is turned off, the rotating speed of the variable frequency motor is collected, the state of the variable frequency motor is determined according to the rotating speed of the variable frequency motor, the baffle plate of the range hood is turned off according to the state of the variable frequency motor, and the smoke collection port of the smoke collection hood is shielded, so that unpleasant noise generated inside a cavity of the range hood due to the surge of airflow under the condition that the baffle plate is turned off while the variable frequency range hood is turned off is avoided, and the noise caused by the impact on the baffle plate when the exhaust fan in the smoke.
Drawings
Fig. 1 is a flowchart of a noise reduction method for a range hood according to an embodiment of the present invention;
FIG. 2 is a flowchart of a noise reduction method for a range hood according to a second embodiment of the present invention
Fig. 3 is a variation curve of the rotating speed of the inverter motor according to the embodiment of the present invention;
FIG. 4 is a logic diagram of a noise reduction method for a range hood according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of a noise reduction device of a cigarette making machine according to a fourth embodiment of the present invention;
fig. 6 is a schematic structural diagram of a cigarette making machine according to a fifth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
An embodiment of the present invention provides a noise reduction method for a cigarette making machine, where the method may be implemented by a noise reduction device for a cigarette making machine provided in an embodiment of the present invention, and the device may be implemented in a software and/or hardware manner and is integrated in a cigarette making machine, and fig. 1 is a flowchart of a noise reduction method for a cigarette making machine provided in an embodiment of the present invention, as shown in fig. 1, the method specifically includes the following steps:
and S101, receiving a closing signal.
Illustratively, the range hood in the embodiment of the invention is a range hood, and the range hood comprises a smoke collecting hood which is arranged right above or obliquely above a kitchen cooking bench. An exhaust fan is arranged in the exhaust fume collecting hood and is connected with a variable frequency motor, and the variable frequency motor is used for driving the exhaust fan to rotate. The fume collecting hood is provided with a fume collecting port and a fume exhaust port, the fume collecting port is aligned with the kitchen range, the fume exhaust port is connected with a fume exhaust pipeline, and the fume exhaust pipeline leads to the outside. The smoke collecting cover is also provided with a baffle which can act so as to open or shield the smoke collecting port. Specifically, when the range hood works, the baffle is in an open state, the variable frequency motor drives the exhaust fan to rotate, negative pressure is generated near a smoke collecting port of the smoke collecting hood, oil smoke of a kitchen range is adsorbed into the smoke collecting hood, and the oil smoke is exhausted out of a room through the smoke exhaust port and the smoke exhaust pipeline.
The smoke collecting cover is provided with a control panel, the control panel comprises a control key, and the key can be a physical key or a touch key, and the invention is not limited herein. In the working process of the cigarette machine, if a user wants to close the cigarette machine, the user can press or touch the control key by fingers to send a closing signal to the cigarette machine, and the cigarette machine receives the closing signal sent by the user through the control key.
And S102, turning off a variable frequency motor of the range hood according to the turning-off signal.
And after the cigarette machine receives the closing signal, the variable frequency motor is closed. It should be noted that, as will be understood by those skilled in the art, when the inverter motor is turned off, the inverter motor does not completely lose its driving force, but there is a process in which the driving force gradually decreases until it reaches zero. The inverter motor stops rotating after a certain time when the driving force becomes zero.
S103, collecting the rotating speed of the variable frequency motor.
After the inverter motor is turned off, the rotating speed of the inverter motor changes, and the rotating speed of the inverter motor needs to be sampled at certain time intervals. Specifically, a plurality of sampling moments can be set, any two adjacent sampling moments have the same time interval, and when the sampling moments are reached, the rotating speed of the variable frequency motor is acquired. Illustratively, after a variable frequency motor of the cigarette machine is turned off, the rotating speed of the variable frequency motor is collected every 200ms, and 200ms is just the time interval of serial communication every time, so that the collected signal transmission of the rotating speed of the variable frequency motor is facilitated.
And S104, determining the state of the variable frequency motor according to the rotating speed.
For example, the state of the variable frequency motor can be determined by comparing the collected rotating speeds of the variable frequency motor and determining the variation trend of the variable frequency motor. For example, the correspondence between the rotation speed of the inverter motor and the state of the inverter motor may be established in advance. Specifically, inverter motor's rotational speed corresponds the rotational speed of extraction fan, and the rotational speed of extraction fan influences the intensity of air current in the cigarette machine, and the noise that the baffle caused is strikeed when the intensity of air current influences the air current in the cigarette machine to the rotational speed of extraction fan, at research and development test stage, can test the sampling, sets for different threshold value rotational speeds, and the noise size after the test baffle is closed is less than the default (for example 10dB), and inverter motor's state sets up to the target state.
And S105, closing a baffle of the range hood according to the state of the variable frequency motor.
Illustratively, the state of the inverter motor is determined according to a correspondence relationship between the rotating speed of the inverter motor and the state of the inverter motor which is established in advance. Specifically, when the state of the variable frequency motor is determined to be the target state, the baffle plate of the smoke collector is closed, and the smoke collecting port of the smoke collecting hood is shielded. Under the target state, the baffle of the smoke machine is closed, so that the internal noise of the smoke machine is smaller than a preset value, and the noise caused by impacting the baffle when the exhaust fan in the smoke collecting hood adsorbs airflow is reduced.
According to the noise reduction method for the range hood, provided by the embodiment of the invention, after the variable frequency motor of the range hood is turned off, the rotating speed of the variable frequency motor is collected, the state of the variable frequency motor is determined according to the rotating speed of the variable frequency motor, the baffle plate of the range hood is turned off according to the state of the variable frequency motor, and the smoke collection port of the smoke collection hood is shielded, so that unpleasant noise generated inside a cavity of the range hood due to the surge of airflow under the condition that the baffle plate is turned off while the variable frequency range hood is turned off is avoided, and the noise caused by the impact on the baffle plate when the exhaust fan in the smoke.
Example two
On the basis of the above embodiment, a second embodiment of the present invention provides another noise reduction method for a range hood, which details specific processes of determining a variation trend of a rotation speed and determining a target state, and fig. 2 is a flowchart of the noise reduction method for the range hood provided by the second embodiment of the present invention, as shown in fig. 2, the method specifically includes the following steps:
s201, receiving a closing signal.
And S202, turning off a variable frequency motor of the cigarette machine according to the turning-off signal.
And S203, collecting the rotating speed of the variable frequency motor.
And S204, comparing the rotating speeds to determine the variation trend of the rotating speeds.
For example, the rotation speeds acquired within a certain time period after the variable frequency motor is turned off (for example, within 2s after the variable frequency motor is turned off) are compared, and the variation trend of the rotation speed of the variable frequency motor is determined.
Specifically, according to the difference of the time for turning off the variable frequency motor, after the variable frequency motor is turned off, the rotating speed of the variable frequency motor can have three different variation trends, specifically, the three different variation trends are a first variation trend of firstly accelerating and then decelerating, a second variation trend of only decelerating and a third variation trend of only uniform speed.
Fig. 3 is a rotation speed variation curve of a variable frequency motor according to an embodiment of the present invention, as shown in fig. 3, after the variable frequency motor is started (coordinate origin position), the motor is slowly accelerated for a period of time from the abscissa origin to a time point a in fig. 3. Then rapidly accelerates until the maximum rotation speed Vmax is reached, i.e., from the time point a to the time point B on the abscissa in fig. 3. In the normal working process, the variable frequency motor rotates at a constant speed with the maximum rotating speed Vmax, namely from the time point B to the time point C in fig. 3.
If the time when the variable frequency motor is turned off is in the rapid acceleration section, that is, at any time point between the time point a and the time point B in fig. 3, since the driving force still exists after the variable frequency motor is turned off, the variable frequency motor may have an acceleration process, and after the driving force becomes zero, the variable frequency motor gradually decelerates until the driving force becomes zero, that is, the variation trend of the rotation speed is the first variation trend of first accelerating and then decelerating, and the first variation trend has an acceleration stage and a deceleration stage. If the time when the inverter motor is turned off is after the rotating speed Vmax is reached, that is, at any time point between abscissa B and C in fig. 3 (including end point of B, C), for example, taking the case of turning off the inverter motor at time point C on the abscissa in fig. 3, after the inverter motor is turned off, the rotating speed will slowly decrease until it is zero due to the decrease of the driving force, that is, the variation trend of the rotating speed is the second variation trend of only reducing speed, and the second variation trend only exists in the speed reduction stage. If the time of turning off the inverter motor is in the slow acceleration section, that is, at any time point between the origin and the time point a in fig. 3, since the driving force of the inverter motor is small in the slow acceleration section, after the inverter motor is turned off, the influence of the reduction of the driving force on the rotation speed is negligible, and since the speed is small in the slow acceleration section, the change of the rotation speed of the whole acceleration section is not large, it can be considered that there is a stage of rotating at a small constant speed after the inverter motor is turned off, and after the driving force becomes zero, the rotation speed decreases until the rotation stops (the time of the rotation speed decrease is short and can be ignored), that is, the change trend of the rotation speed is a third change trend at a constant speed only, and the third change trend only exists at a.
For example, the process of determining the trend of the rotation speed is as follows:
comparing the rotating speeds acquired within a certain time period after the variable frequency motor is turned off (for example, within 2s after the variable frequency motor is turned off), and comparing the rotating speeds acquired at any two adjacent acquisition moments.
And if the rotating speed acquired at the previous acquisition moment is less than the rotating speed acquired at the next acquisition moment, determining that the variation trend of the rotating speed has an acceleration stage, namely the variation trend of the rotating speed is a first variation trend of first acceleration and then deceleration.
And if the rotating speed acquired at the previous acquisition moment is greater than the rotating speed acquired at the next acquisition moment, determining that the variation trend of the rotating speed only exists in a deceleration stage, namely the variation trend of the rotating speed is a second variation trend of only deceleration.
If the absolute value of the difference value of the rotating speeds acquired at any two acquisition moments is smaller than the preset value, namely the acquired rotating speed has small overall change, the change trend of the rotating speed is determined to exist only in a constant speed stage, namely the change trend of the rotating speed is a third change trend which is only constant.
It should be noted that, the collected rotating speed of the variable frequency motor may be filtered, so as to filter the rotating speed of the transmission mutation, eliminate the influence of the external interference on the collected rotating speed, and improve the accuracy of the judgment of the variation trend. The determined variation trend is used for illustrating the embodiment of the present invention, but the present invention is not limited thereto, and in other embodiments of the present invention, the collected motor rotation speed may be fitted to a curve, and the curve is derived, so that the variation trend of the rotation speed may be determined.
And S205, determining the state of the variable frequency motor based on the variation trend.
For example, if the variation trend has an acceleration stage, that is, the variation trend is a first variation trend, the initial rotation speed of the variable frequency motor is compared with a preset first threshold rotation speed, where the initial rotation speed is the rotation speed when the variable frequency motor is turned off.
And when the initial rotating speed is greater than or equal to the first threshold rotating speed, waiting for the change trend to change from the acceleration phase to the deceleration phase. Specifically, after the inverter motor is turned off, the rotation speed of the inverter motor is collected once every preset interval time (e.g., 200 ms). And after determining that the variation trend is a first variation trend of first acceleration and then deceleration, continuously comparing the rotating speeds acquired at any two adjacent acquisition moments, and if the rotating speed acquired at the previous acquisition moment is greater than the rotating speed acquired at the next acquisition moment, determining to enter a deceleration stage of the first variation trend.
After the change trend is converted into a deceleration stage, namely after the deceleration stage of the first change trend is entered, comparing the collected rotating speed with a preset second threshold rotating speed, wherein the second threshold rotating speed is greater than the first threshold rotating speed.
After the baffle plate of the range hood is closed, the variable frequency motor still does not stop rotating, and airflow generated by the rotation of the exhaust fan impacts the baffle plate to generate unpleasant noise. Specifically, in a research and development test stage, test sampling can be performed, different threshold rotating speeds are set, the noise level after the baffle is closed is tested, and when the noise level is smaller than a preset value (for example, 10dB), the threshold rotating speed at the moment is used as a second threshold rotating speed.
It should be noted that, for each cigarette making machine, the second threshold rotation speed may differ due to the limitation of the production process, but for the same batch of cigarette making machines of the same model, the difference between the first threshold rotation speeds is not very large due to the same production process, so that a common or average value may be selected as the second threshold value for the same batch of cigarette making machines of the same model. The first threshold rotational speed is less than the second threshold rotational speed, which may be, for example, one-third of the second threshold rotational speed.
When the rotating speed is lower than the second threshold rotating speed, the state of the variable frequency motor is determined to be a target state, and the baffle of the range hood is closed under the target state, so that the noise is smaller than a preset value, and the noise caused by the impact of the adsorption airflow generated by the rotation of the exhaust fan in the smoke collection hood on the baffle is reduced.
For example, when the variation trend of the rotation speed is determined to be a first variation trend of first acceleration and then deceleration, the initial rotation speed of the variable frequency motor is compared with a preset first threshold rotation speed, and when the initial rotation speed is smaller than the first threshold rotation speed, the state of the variable frequency motor is determined to be the target state. Specifically, when the initial rotation speed is less than the first threshold rotation speed, that is, the initial rotation speed is less than one third of the second threshold rotation speed, after the variable frequency motor is turned off, the variable frequency motor is not accelerated to the second threshold rotation speed in the acceleration stage of the first variation trend, that is, after the variable frequency motor is turned off, the rotation speed is always less than the second threshold rotation speed, and therefore, when the variable frequency motor is turned off, the state of the variable frequency motor can be determined to meet the target state. And under the target state, closing a baffle of the smoke machine to enable the noise to be smaller than a preset value, so as to reduce the noise caused by impact of adsorption airflow generated by rotation of the exhaust fan in the smoke collection hood on the baffle.
Illustratively, when the change trend of the rotating speed is determined to be a third change trend only in a constant speed stage, waiting for a preset time, in an embodiment of the present invention, the preset time may be 2s, and after waiting for 2s, determining the state of the inverter motor to be the target state. And under the target state, closing a baffle of the smoke machine to enable the noise to be smaller than a preset value, so as to reduce the noise caused by impact of adsorption airflow generated by rotation of the exhaust fan in the smoke collection hood on the baffle.
And S206, closing a baffle of the range hood according to the state of the variable frequency motor.
According to the noise reduction method for the range hood provided by the embodiment of the invention, after the variable frequency motor of the range hood is turned off, the rotating speed of the variable frequency motor is collected, the state of the variable frequency motor is determined according to the rotating speed of the variable frequency motor, and when the state of the variable frequency motor is determined to be the target state, the baffle plate of the range hood is turned off to shield the smoke collection port of the smoke collection hood. Under the target state, the baffle of the smoke machine is closed, so that the internal noise of the smoke machine is smaller than a preset value, and the noise caused by impacting the baffle when the exhaust fan in the smoke collecting hood adsorbs airflow is reduced.
EXAMPLE III
In order to make the embodiment of the present invention better understood by those skilled in the art, the noise reduction method of the cigarette machine in the embodiment is described below by a specific example.
Fig. 4 is a logic schematic diagram of a noise reduction method for a cigarette making machine according to a third embodiment of the present invention, as shown in fig. 4, in this specific embodiment, the noise reduction method for a cigarette making machine includes:
and S301, receiving a closing signal.
And S302, turning off the variable frequency motor.
And according to the closing signal, closing the variable frequency motor.
And S303, collecting the rotating speed of the variable frequency motor.
After the variable frequency motor is turned off, the rotating speed of the variable frequency motor is collected once every preset time interval (for example, 200 ms).
And S304, comparing the rotating speeds.
According to the comparison result, the variation trend of the rotation speed is determined, specifically, step S305 is executed first to determine whether the variation trend is a first variation trend of first acceleration and then deceleration, if not, step S306 is executed to determine whether the variation trend is a second variation trend of only deceleration, and if not, step S307 is executed to determine whether the variation trend is a third variation trend of only uniform speed. It should be noted that, the above-mentioned sequence of determining the first variation trend, the second variation trend and the third variation trend is an exemplary description, in other embodiments of the present invention, it may also be determined whether the first variation trend is the second variation trend, then determined whether the first variation trend is the first variation trend, and finally determined whether the third variation trend is the third variation trend, that is, the sequence of determining the first variation trend, the second variation trend and the third variation trend is not limited in the embodiments of the present invention.
Further, in step S305, if it is determined that the variation trend of the rotation speed is the first variation trend, step S308 is executed to determine whether the initial rotation speed of the inverter motor is less than a first threshold rotation speed, and if the initial rotation speed is less than the first threshold rotation speed, step S309 is executed to control the baffle to be closed; if the initial rotating speed is greater than or equal to the first threshold rotating speed, executing step S310, determining whether the acquired rotating speed is less than the second threshold rotating speed, if the acquired rotating speed is greater than or equal to the second threshold rotating speed, continuing to acquire the rotating speed of the variable frequency motor, and returning to execute step S310 until the acquired rotating speed is less than the second threshold rotating speed, at this moment, the rotating speed is in a deceleration stage with a first variation trend, and the rotating speed is less than the second threshold rotating speed, executing step S309, and controlling the baffle to be closed.
In step S306, if it is determined that the variation trend of the rotation speed is the second variation trend, step S310 is executed to determine whether the acquired rotation speed is less than the second threshold rotation speed, if the acquired rotation speed is greater than or equal to the second threshold rotation speed, the rotation speed of the inverter motor is continuously acquired, and step S310 is executed again until the acquired rotation speed is less than the second threshold rotation speed, step S309 is executed to control the baffle to be closed.
In step S307, if it is determined that the variation trend of the rotation speed is the third variation trend, step S311 is executed to determine whether the waiting time reaches 2S, and if the waiting time does not reach 2S, the waiting is continued, and the step S311 is returned to be executed until the waiting time reaches 2S, step S309 is executed to control the shutter to close.
Example four
An embodiment of the present invention fourth provides a noise reduction device for a cigarette machine, and fig. 5 is a schematic structural diagram of the noise reduction device for a cigarette machine provided in the fourth embodiment of the present invention, as shown in fig. 5, the noise reduction device for a cigarette machine includes:
a shutdown signal receiving module 501, configured to receive a shutdown signal;
a motor closing module 502, configured to close a variable frequency motor of the cigarette making machine according to the closing signal, where a smoke collection hood of the cigarette making machine is provided with a smoke collection port and a smoke exhaust fan, and the variable frequency motor is used to drive the smoke exhaust fan;
a rotating speed acquisition module 503, configured to acquire a rotating speed of the variable frequency motor;
a state determining module 504, configured to determine a state of the inverter motor according to the rotation speed;
and the baffle closing module 505 is used for closing a baffle of the cigarette making machine according to the state of the variable frequency motor, and the baffle is used for shielding the cigarette collecting port.
According to the noise reduction device for the range hood, provided by the embodiment of the invention, after the variable frequency motor of the range hood is turned off, the rotating speed of the variable frequency motor is collected, the state of the variable frequency motor is determined according to the rotating speed of the variable frequency motor, and when the state of the variable frequency motor is determined to be the target state, the baffle plate of the range hood is turned off to shield the smoke collection port of the smoke collection hood. Under the target state, the baffle of the smoke machine is closed, so that the internal noise of the smoke machine is smaller than a preset value, and the noise caused by impacting the baffle when the exhaust fan in the smoke collecting hood adsorbs airflow is reduced.
On the basis of the above embodiment, the rotation speed acquisition module 503 includes:
and the acquisition unit is used for acquiring the rotating speed of the variable frequency motor when the acquisition time is reached, wherein any two adjacent acquisition time intervals are the same.
The state determination module 504 includes:
the variation trend determining unit is used for comparing the rotating speeds to determine the variation trend of the rotating speeds;
and the state determining unit is used for determining the state of the variable frequency motor based on the variation trend.
The variation tendency determination unit includes:
the rotating speed comparison subunit is used for comparing the rotating speeds acquired at any two adjacent acquisition moments;
the change trend determining subunit is used for determining that the change trend of the rotating speed has an acceleration stage and a deceleration stage when the rotating speed acquired at the previous acquisition moment is less than the rotating speed acquired at the next acquisition moment;
when the rotating speed acquired at the previous acquisition moment is greater than the rotating speed acquired at the next acquisition moment, determining that the variation trend of the rotating speed only exists in a deceleration stage;
and when the absolute value of the difference value of the rotating speeds acquired at any two acquisition moments is smaller than a preset value, determining that the variation trend of the rotating speeds only exists in a constant speed stage.
The state determining unit is used for comparing the initial rotating speed of the variable frequency motor with a preset first threshold rotating speed when the variation trend has an acceleration stage, wherein the initial rotating speed is the rotating speed when the variable frequency motor is closed;
when the initial rotating speed is greater than or equal to the first threshold rotating speed, waiting for the change trend to be converted from an acceleration stage to a deceleration stage;
after the change trend is converted into the deceleration stage, comparing the rotating speed with a preset second threshold rotating speed, wherein the second threshold rotating speed is greater than the first threshold rotating speed;
and when the rotating speed is less than the second threshold rotating speed, determining that the state of the variable frequency motor is a target state.
The state determining unit is further used for determining that the state of the variable frequency motor is a target state when the initial rotating speed is smaller than the first threshold rotating speed.
The state determining unit is further used for comparing the rotating speed with a preset second threshold rotating speed when the change trend only has a deceleration stage;
and when the rotating speed is less than the second threshold rotating speed, determining that the state of the variable frequency motor is a target state.
The state determining unit is further used for waiting for preset time when the change trend only exists in a constant speed stage;
and when the preset time is reached, determining the state of the variable frequency motor as a target state.
The flapper closing module 505 includes:
the target state determining unit is used for determining that the state of the variable frequency motor is a target state;
and the baffle closing unit is used for closing the baffle of the smoke machine in the target state so as to reduce noise caused by impacting the baffle when the exhaust fan adsorbs airflow in the smoke collecting hood.
The noise reduction device of the cigarette machine provided by the embodiment can be used for implementing the noise reduction method of the cigarette machine provided by the embodiment, and has corresponding functions and beneficial effects.
EXAMPLE five
Fig. 6 is a schematic structural diagram of a cigarette making machine according to a fifth embodiment of the present invention, and as shown in fig. 6, the cigarette making machine includes a processor 601, a memory 602, a communication module 603, an input device 604, and an output device 605; the number of processors 601 in the cigarette machine may be one or more, and one processor 601 is taken as an example in fig. 6; the processor 601, memory 602, communication module 603, input device 604 and output device 605 of the cigarette machine may be connected by a bus or other means, as exemplified by a bus connection in figure 6. The processor 601, memory 602, communication module 603, input device 604 and output device 605 described above may be integrated on the control motherboard of the cigarette maker. The cigarette machine also comprises a smoke collection cover (not shown in the figure), wherein an exhaust fan 606 is arranged in the smoke collection cover, the exhaust fan 606 is connected with a variable frequency motor 607, the variable frequency motor 607 is used for driving the exhaust fan to rotate, and the variable frequency motor 607 is electrically connected with the bus. The smoke collecting cover is provided with a smoke collecting port and a smoke exhaust port, the smoke exhaust port is connected with a smoke exhaust pipeline, and the smoke exhaust pipeline leads to the outside. The fume collecting hood is also provided with a flap 608, the flap 608 being actuatable to open or shield the fume collecting opening, the flap 608 being electrically connected to the bus. Specifically, when the range hood works, the baffle 608 is in an open state, the variable frequency motor 607 drives the exhaust fan 606 to rotate, negative pressure is generated near a smoke collecting port of the smoke collecting hood, smoke is absorbed into the smoke collecting hood, and the smoke is exhausted out of a room through the smoke exhaust port and the smoke exhaust pipeline.
The smoke collecting cover is provided with a control panel, the control panel comprises a control key, and the key can be a physical key or a touch key, and the invention is not limited herein. In the working process of the cigarette machine, if a user wants to close the cigarette machine, the user can press or touch the control key by fingers to send a closing signal to the cigarette machine, and after receiving the closing signal, the processor 601 executes the noise reduction method of the cigarette machine according to the above embodiment of the present invention, and finally controls the baffle 608 to close.
The memory 602 is used as a computer-readable storage medium for storing software programs, computer-executable programs, and modules, such as the modules corresponding to the noise reduction method of a range hood in the present embodiment (for example, the shutdown signal receiving module 501, the motor shutdown module 502, the rotation speed collecting module 503, the state determining module 504, and the damper shutdown module 505 in the noise reduction device of a range hood). The processor 601 executes various functional applications and data processing of the cigarette making machine by running software programs, instructions and modules stored in the memory 602, namely, the noise reduction method of the cigarette making machine is realized.
The memory 602 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of a cigarette machine, and the like. Further, the memory 602 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 602 may further include memory located remotely from the processor 601, which may be connected to the electronic device through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The communication module 603 is configured to establish a connection with an external device (e.g., an intelligent terminal), and implement data interaction with the external device. The input device 604 may be used to receive entered numerical or character information and to generate key signal inputs relating to user settings and function controls of the cigarette maker.
The cigarette machine provided by the embodiment of the invention can execute the noise reduction method of the cigarette machine provided by the embodiment of the invention, and has corresponding functions and beneficial effects.
EXAMPLE six
An embodiment of the present invention provides a storage medium containing computer-executable instructions, where a computer program is stored on the storage medium, and when the computer program is executed by a processor, the method for reducing noise of a cigarette making machine according to an embodiment of the present invention is implemented, where the method includes:
receiving a close signal;
according to the closing signal, a variable frequency motor of the cigarette machine is closed, a smoke collecting cover of the cigarette machine is provided with a smoke collecting port and a fan, and the variable frequency motor is used for driving the fan;
collecting the rotating speed of the variable frequency motor;
determining the state of the variable frequency motor according to the rotating speed;
and closing a baffle of the cigarette machine according to the state of the variable frequency motor, wherein the baffle is used for shielding the cigarette collecting port.
Of course, the storage medium containing the computer-executable instructions provided by the embodiments of the present invention is not limited to the method operations described above, and may also perform related operations in the noise reduction method of the cigarette making machine provided by the embodiments of the present invention.
It should be noted that, as for the device, the cigarette machine and the storage medium embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and in relation to the description, reference may be made to some parts of the method embodiments.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, and the computer software product may be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions to enable a computer device (which may be a robot, a personal computer, a server, or a network device) to execute the noise reduction method of the cigarette machine according to any embodiment of the present invention.
It should be noted that, in the above apparatus, each unit and each module included in the apparatus are merely divided according to functional logic, but are not limited to the above division as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by suitable instruction execution devices. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (12)
1. A noise reduction method of a cigarette making machine is applied to the cigarette making machine and is characterized by comprising the following steps:
receiving a close signal;
according to the closing signal, a variable frequency motor of the cigarette machine is closed, a smoke collecting cover of the cigarette machine is provided with a smoke collecting port and a fan, and the variable frequency motor is used for driving the fan;
collecting the rotating speed of the variable frequency motor;
determining the state of the variable frequency motor according to the rotating speed;
and closing a baffle of the cigarette machine according to the state of the variable frequency motor, wherein the baffle is used for shielding the cigarette collecting port.
2. The noise reduction method for the cigarette machine according to claim 1, wherein the collecting the rotating speed of the variable frequency motor comprises:
and when the acquisition time is reached, acquiring the rotating speed of the variable frequency motor, wherein the interval between any two adjacent acquisition times is the same.
3. The method of reducing noise in a cigarette machine of claim 1 or 2, wherein said determining a state of said variable frequency motor based on said rotational speed comprises:
comparing the rotating speeds to determine the variation trend of the rotating speeds;
and determining the state of the variable frequency motor based on the variation trend.
4. The method of reducing noise in a cigarette machine of claim 3 wherein said comparing said rotational speeds to determine a trend of change in said rotational speeds comprises:
comparing the rotating speeds acquired at any two adjacent acquisition moments;
if the rotating speed acquired at the previous acquisition moment is less than the rotating speed acquired at the next acquisition moment, determining that the variation trend of the rotating speed has an acceleration stage and a deceleration stage;
if the rotating speed acquired at the previous acquisition moment is greater than the rotating speed acquired at the next acquisition moment, determining that the variation trend of the rotating speed is a deceleration trend;
and if the absolute value of the difference value of the rotating speeds acquired at any two acquisition moments is smaller than a preset value, determining that the variation trend of the rotating speeds has a uniform trend.
5. The method of reducing noise in a cigarette machine of claim 3, wherein said determining the state of said variable frequency motor based on said trend of change comprises:
if the variation trend has an acceleration stage, comparing the initial rotating speed of the variable frequency motor with a preset first threshold rotating speed, wherein the initial rotating speed is the rotating speed when the variable frequency motor is closed;
when the initial rotating speed is greater than or equal to the first threshold rotating speed, waiting for the change trend to be converted from an acceleration stage to a deceleration stage;
after the change trend is converted into the deceleration stage, comparing the rotating speed with a preset second threshold rotating speed, wherein the second threshold rotating speed is greater than the first threshold rotating speed;
and when the rotating speed is less than the second threshold rotating speed, determining that the state of the variable frequency motor is a target state.
6. The method of reducing noise in a cigarette machine of claim 3, further comprising:
if the variation trend has an acceleration stage, comparing the initial rotating speed of the variable frequency motor with a preset first threshold rotating speed, wherein the initial rotating speed is the rotating speed when the variable frequency motor is closed;
and when the initial rotating speed is less than the first threshold rotating speed, determining that the state of the variable frequency motor is a target state.
7. The method of reducing noise in a cigarette machine of claim 3, wherein said determining the state of said variable frequency motor based on said trend of change comprises:
if the change trend is a deceleration trend, comparing the rotating speed with a preset second threshold rotating speed;
and when the rotating speed is less than the second threshold rotating speed, determining that the state of the variable frequency motor is a target state.
8. The method of reducing noise in a cigarette machine of claim 3, wherein said determining the state of said variable frequency motor based on said trend of change comprises:
if the change trend is a uniform trend, waiting for a preset time;
and when the preset time is reached, determining the state of the variable frequency motor as a target state.
9. The method of reducing noise in a cigarette machine according to any one of claims 1 to 8 wherein said closing a damper of said cigarette machine based on the state of said variable frequency motor comprises:
determining the state of the variable frequency motor as a target state;
and under the target state, closing a baffle of the smoke machine so as to reduce noise caused by impacting the baffle when the exhaust fan in the smoke collection hood adsorbs airflow.
10. The utility model provides a device of making an uproar falls in cigarette machine is applied to the cigarette machine, its characterized in that includes:
a closing signal receiving module for receiving a closing signal;
the motor closing module is used for closing a variable frequency motor of the cigarette machine according to the closing signal, a smoke collecting cover of the cigarette machine is provided with a smoke collecting port and a fan, and the variable frequency motor is used for driving the fan;
the rotating speed acquisition module is used for acquiring the rotating speed of the variable frequency motor;
the state determining module is used for determining the state of the variable frequency motor according to the rotating speed;
and the baffle closing module is used for closing a baffle of the cigarette machine according to the state of the variable frequency motor, and the baffle is used for shielding the cigarette collecting port.
11. A range hood, characterized in that said range hood comprises:
one or more processors;
storage means for storing one or more programs;
the smoke collecting hood is provided with a smoke collecting port and a ventilator;
the variable frequency motor is used for driving the exhaust fan;
the baffle is used for shielding the smoke collecting port;
when executed by the one or more processors, cause the one or more processors to implement a method of noise reduction for a range hood as claimed in any one of claims 1 to 9.
12. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out a method of noise reduction for a range hood as claimed in any one of the claims 1 to 9.
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| CN110762576B (en) | 2021-06-11 |
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