CN108758729B - Smoke machine noise reduction control method - Google Patents
Smoke machine noise reduction control method Download PDFInfo
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- CN108758729B CN108758729B CN201810293131.1A CN201810293131A CN108758729B CN 108758729 B CN108758729 B CN 108758729B CN 201810293131 A CN201810293131 A CN 201810293131A CN 108758729 B CN108758729 B CN 108758729B
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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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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The embodiment of the invention discloses a noise reduction control method for a cigarette machine, which comprises the following steps: performing vibration compensation on parts of the cigarette machine according to a preset compensation frequency spectrum; detecting a vibration spectrum of said range hood component; and if the vibration frequency spectrum of the parts of the cigarette machine does not meet the preset condition, adjusting the compensation frequency spectrum. According to the embodiment of the invention, closed-loop control of vibration compensation on the parts of the range hood is realized by adjusting the compensation frequency spectrum, so that noise reduction can be better performed on the range hood, and the noise reduction effect is improved.
Description
Technical Field
The embodiment of the invention relates to the technology of kitchen appliances, in particular to a noise reduction control method for a range hood.
Background
The noise becomes one of the three most main pain points of the cigarette making machine, the air duct turbulence, the body vibration, the volute vibration and the like are main noise sources in the operation process of the cigarette making machine, and the current main noise reduction method of the cigarette making machine is realized through the following aspects:
1. mechanical noise reduction and sound insulation: the design of making an uproar is fallen through spiral case and the air-out structure to the cigarette machine, can reduce the noise that the spiral case vortex produced, but because the noise source frequency spectrum difference of cigarette machine is big, various complicated noise environment is difficult to adapt to single structure.
2. The direct current brushless motor variable frequency speed regulation, low frequency operation and better power output can reduce fan operating noise to a certain extent, but can not fundamentally effectively reduce turbulent flow and resonance noise.
3. The active noise reduction technology is gradually known by everybody in nearly two years, environmental noise is sampled, signals which are inverted and have the same amplitude with the phase position of the noise are output, the effect of reducing the running noise of the cigarette machine is achieved, and because the distance between the human ear and the cigarette machine is far away, a human body and the cigarette machine are not a whole and are in a closed space, the interference of the environmental noise is avoided, and the active noise reduction effect is poor.
Disclosure of Invention
The embodiment of the invention provides a noise reduction control method for a range hood, which can be used for reducing noise of the range hood better and improving the noise reduction effect.
The embodiment of the invention adopts the following technical scheme:
a noise reduction control method for a range hood comprises the following steps:
performing vibration compensation on parts of the cigarette machine according to a preset compensation frequency spectrum;
detecting a vibration spectrum of said range hood component;
and if the vibration frequency spectrum of the parts of the cigarette machine does not meet the preset condition, adjusting the compensation frequency spectrum.
Optionally, the method for controlling noise reduction of a cigarette making machine further comprises:
detecting whether a check valve of the range hood is abnormal;
when the check valve of the range hood is abnormal, judging whether the number of pressurized smoke exhaust times is greater than a first preset threshold value, wherein the initial value of the number of pressurized smoke exhaust times is X, and X is an integer;
if the number of times of the pressurized smoke exhaust is smaller than or equal to the first preset threshold value, increasing the rotating speed of a fan of the range hood, and adding 1 to the number of times of the pressurized smoke exhaust; and if the number of times of the pressurized smoke exhaust is greater than the first preset threshold value, judging that the check valve of the range hood is damaged.
Optionally, the detecting whether the check valve of the cigarette machine is abnormal comprises:
detecting whether the cigarette machine check valve is abnormal according to the vibration frequency spectrum of the cigarette machine check valve.
Optionally, the method for controlling noise reduction of a cigarette making machine further comprises:
detecting whether the impeller of the cigarette machine is abnormal according to the vibration frequency spectrum of the impeller of the cigarette machine.
Optionally, the method for controlling noise reduction of a cigarette making machine further comprises:
if the mute mode of the cigarette machine is started, acquiring the sound intensity of the noise of the cigarette machine;
and if the sound intensity of the noise of the cigarette machine is greater than the preset mute intensity value, reducing the rotating speed of the fan of the cigarette machine.
Optionally, the predetermined condition comprises: the vibration amplitude of the cigarette machine component after vibration compensation is smaller than the vibration amplitude before vibration compensation, and/or the noise audio amplitude of the cigarette machine component after vibration compensation is smaller than the noise audio amplitude before vibration compensation.
Optionally, if the predetermined condition comprises: the vibration amplitude of the cigarette machine component after vibration compensation is smaller than the vibration amplitude before vibration compensation;
adjusting the compensation spectrum comprises:
if the vibration amplitude of the cigarette machine component after vibration compensation is larger than the vibration amplitude before vibration compensation, resetting the compensation frequency spectrum according to the current vibration frequency spectrum of the cigarette machine component;
and if the vibration amplitude of the cigarette machine component after vibration compensation is equal to the vibration amplitude before vibration compensation, keeping the compensation frequency in the compensation frequency spectrum unchanged, and increasing the compensation amplitude in the compensation frequency spectrum.
Optionally, if the vibration frequency spectrum of the cigarette machine component does not satisfy the predetermined condition, before adjusting the compensation frequency spectrum, the cigarette machine noise reduction control method further includes:
judging whether the adjustment times of the compensation frequency spectrum are larger than a second preset threshold value or not, wherein the initial value of the adjustment times of the compensation frequency spectrum is Y, and Y is an integer;
if the adjustment times of the compensation frequency spectrum are judged to be less than or equal to a second preset threshold value, executing the step of adjusting the compensation frequency spectrum, and adding 1 to the adjustment times of the compensation frequency spectrum; and if the adjustment times of the compensation frequency spectrum are judged to be larger than a second preset threshold value, executing a preset action, and setting the adjustment times of the compensation frequency spectrum as an initial value Y.
Optionally, the predetermined action comprises: reducing the rotating speed of a fan of the range hood;
after the rotating speed of the fan of the range hood is reduced, the noise reduction control method of the range hood further comprises the following steps:
and if an instruction for increasing the fan rotating speed of the range hood is detected, controlling the fan rotating speed of the range hood according to the instruction.
Optionally, a vibration spectrum of the component of the range hood is detected by a vibration sensor.
The embodiment of the invention has the beneficial effects that:
1. according to the embodiment of the invention, after vibration compensation is carried out on the cigarette machine part, if the vibration frequency spectrum of the cigarette machine part does not meet the preset condition, the vibration compensation is carried out on the cigarette machine part according to the preset compensation frequency spectrum, and the noise reduction is not realized or a better noise reduction effect is not achieved, the compensation frequency spectrum is readjusted, so that the vibration compensation is carried out on the cigarette machine part according to the adjusted compensation frequency spectrum, thereby realizing the closed-loop control of the vibration compensation, better reducing the noise of the cigarette machine, improving the noise reduction effect and further improving the use experience of users.
2. In the scheme of the embodiment of the invention, if the check valve of the range hood is abnormal, the oil smoke cannot be discharged normally, and the rotating speed of the fan of the range hood is increased to pressurize and discharge the smoke, so that the normal discharge of the oil smoke is ensured and the backflow of the oil smoke is avoided. If the number of times of pressurization is greater than a first preset threshold value, it is described that a plurality of times of pressurization is carried out and the smoke exhaust can not restore the cigarette machine check valve to normal, then the damage of the cigarette machine check valve can be judged to occur in a mode that the cigarette machine check valve can not be automatically repaired, and a user is required to maintain the cigarette machine check valve, so that the automatic detection of whether the cigarette machine check valve is damaged or not is realized.
3. In the scheme of the embodiment of the invention, if the mute mode of the cigarette making machine is started, the sound intensity of the noise of the cigarette making machine required by a user is relatively low. If the sound intensity of the noise of the cigarette making machine is less than or equal to the preset mute intensity value, the operation of the cigarette making machine meets the mute requirement of a user; if the sound intensity of the noise of the cigarette machine is greater than the preset mute intensity value, the noise is reduced by reducing the rotating speed of the fan of the cigarette machine, so that the operation of the cigarette machine meets the mute requirement of a user.
4. In the scheme of the embodiment of the invention, if the vibration amplitude of the cigarette machine part after vibration compensation is larger than the vibration amplitude before vibration compensation, the vibration compensation of the cigarette machine part is reverse ineffective noise reduction, and the reason for the reverse ineffective noise reduction can be noise superposition caused by the inconsistency of the vibration compensation frequency and the cigarette machine vibration frequency, the compensation frequency spectrum is reset according to the current vibration frequency spectrum of the cigarette machine part, so that the vibration compensation is carried out according to the reset compensation frequency spectrum, and the problem of reverse ineffective noise reduction is solved. If the vibration amplitude of the cigarette machine part after vibration compensation is equal to the vibration amplitude before vibration compensation, the vibration compensation of the cigarette machine part is invalid and noise reduction is performed, the compensation amplitude in the compensation frequency spectrum is increased to compensate the vibration amplitude of the cigarette machine part, and therefore the effect of positive noise reduction is achieved.
5. According to the embodiment of the invention, whether the adjustment times of the compensation frequency spectrum is greater than a second preset threshold value is judged, if the adjustment times of the compensation frequency spectrum is greater than the second preset threshold value, the vibration frequency spectrum of the parts of the cigarette machine cannot meet the preset conditions after the compensation frequency spectrum is adjusted for many times, and the noise reduction cannot be realized in a vibration compensation mode, and other modes (executing preset actions) are replaced to reduce the noise, so that the noise reduction effect of the cigarette machine is ensured.
6. In the scheme of the embodiment of the invention, the preset action comprises reducing the rotating speed of a fan of the range hood; after reducing the fan rotational speed of cigarette machine, if detect the instruction that improves the fan rotational speed of cigarette machine, explain the fan rotational speed that needs the priority to guarantee the cigarette machine, need not sacrifice the fan rotational speed of cigarette machine and reach the purpose of making an uproar of falling, then according to the instruction control cigarette machine of the fan rotational speed of cigarette machine, avoid reducing the fan rotational speed of cigarette machine and influence user's use and experience.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic flow chart of a noise reduction control method for a cigarette making machine according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a noise reduction control method of a cigarette making machine according to a second embodiment of the present invention;
fig. 3 is a schematic flow chart of a noise reduction control method of a cigarette making machine according to a third embodiment of the present invention;
fig. 4 is a schematic flow chart of a noise reduction control method of a cigarette making machine according to a fourth embodiment of the present invention;
FIG. 5 is a block diagram of a cigarette making machine according to a sixth embodiment of the present invention;
FIG. 6 is a schematic view of the structure of a cigarette maker volute provided by a sixth embodiment of the invention;
figure 7 is a front elevational view of the volute of the cigarette maker of figure 6;
figure 8 is an exploded view of the volute of the cigarette maker of figure 6;
fig. 9 is a schematic structural view of a cigarette machine body according to a sixth embodiment of the present invention.
The names of the components marked in the figures are as follows:
1 first vibration sensor, 2 first piezoelectric vibrator, 3 blotter, 4 first organisms, 5 second organisms, 6 second vibration sensor, 7 second piezoelectric vibrator, 8 audio collector.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
Example one
As shown in fig. 1, a method for controlling noise reduction of a cigarette making machine may include: step 101 to step 103.
Step 101: and carrying out vibration compensation on parts of the cigarette machine according to a preset compensation frequency spectrum.
Step 102: detecting a vibration spectrum of a cigarette machine component.
It should be noted that the vibration spectrum of a cigarette maker component includes: the vibration frequency of the cigarette machine components and the vibration amplitude of the cigarette machine components.
Step 101 comprises: the vibration frequency of the cigarette machine component is taken as the frequency in the compensation frequency spectrum, and the vibration amplitude of the cigarette machine component is unchanged, and the result of phase inversion is taken as the amplitude in the compensation frequency spectrum; and carrying out vibration compensation on parts of the cigarette machine according to the compensation frequency spectrum.
Optionally, in step 102, the vibration spectrum of a component of the cigarette machine may be detected by a vibration sensor.
Step 103: and if the vibration frequency spectrum of the parts of the range hood does not meet the preset condition, adjusting the compensation frequency spectrum.
It should be noted that whether the vibration spectrum of the cigarette maker component satisfies the predetermined condition may be periodically (e.g., every 10 seconds).
Alternatively, the predetermined condition may include: the vibration amplitude of the cigarette machine component after vibration compensation is smaller than the vibration amplitude before vibration compensation, and/or the noise audio amplitude of the cigarette machine component after vibration compensation is smaller than the noise audio amplitude before vibration compensation.
Preferably, the predetermined condition may include: the vibration amplitude of the cigarette machine component after vibration compensation is reduced by a preset value compared with the vibration amplitude before vibration compensation. Further preferably, the preset value satisfies 0.3mm/S-0.5 mm/S. Or
Alternatively, if the predetermined condition includes: the vibration amplitude of the cigarette machine component after vibration compensation is smaller than the vibration amplitude before vibration compensation; then step 103 may include:
if the vibration amplitude of the cigarette machine part after vibration compensation is larger than the vibration amplitude before vibration compensation, the vibration compensation of the cigarette machine part is reverse ineffective noise reduction, and the reason for the reverse ineffective noise reduction can be noise superposition caused by the fact that the frequency of the vibration compensation is inconsistent with the vibration frequency of the cigarette machine, and then the compensation frequency spectrum is reset according to the current vibration frequency spectrum of the cigarette machine part. For example, the current vibration frequency of the cigarette machine component is used as the frequency in the compensation frequency spectrum again, the current vibration amplitude of the cigarette machine component is inverted, the inverted result is used as the amplitude in the compensation frequency spectrum, and vibration compensation is carried out according to the reset compensation frequency spectrum, so that the problem of reverse ineffective noise reduction is solved.
If the vibration amplitude of the cigarette machine component after vibration compensation is equal to the vibration amplitude before vibration compensation, the vibration compensation of the cigarette machine component is invalid noise reduction, the compensation frequency in the compensation frequency spectrum is kept unchanged, and the compensation amplitude in the compensation frequency spectrum is increased to compensate the vibration amplitude of the cigarette machine component, so that the effect of positive noise reduction is achieved.
Optionally, before step 101, the method for controlling noise reduction of a cigarette making machine may include: judging whether the vibration frequency spectrum of the cigarette machine component meets a preset noise reduction condition or not; if the vibration frequency spectrum of the parts of the cigarette machine meets the preset noise reduction condition, executing the step 101; if the vibration frequency spectrum of the cigarette machine part does not meet the preset noise reduction condition, vibration compensation is not needed to be carried out on the cigarette machine part.
Wherein the preset noise reduction condition comprises: the vibration frequency of the cigarette machine component is in the range of 10Hz-2KHz, and/or the vibration amplitude of the cigarette machine component is greater than or equal to 0.5 mm/s.
In the embodiment of the invention, after the vibration compensation is performed on the cigarette machine part, if the vibration frequency spectrum of the cigarette machine part does not meet the predetermined condition, which indicates that the vibration compensation is performed on the cigarette machine part according to the preset compensation frequency spectrum and the noise reduction is not realized or a better noise reduction effect is not achieved, the compensation frequency spectrum is readjusted to perform the vibration compensation on the cigarette machine part according to the adjusted compensation frequency spectrum, so that the closed-loop control of the vibration compensation is realized, the noise reduction of the cigarette machine can be better performed, the noise reduction effect is improved, and the use experience of a user is improved.
Example two
The embodiment of the invention is based on the first embodiment, and the detection of the check valve and the detection of the impeller of the cigarette machine are added. As shown in fig. 2, the method for controlling noise reduction of a cigarette making machine may further include steps 104 to 108 in addition to steps 101 to 103.
Step 104: and (5) detecting whether the check valve of the range hood is abnormal or not, and executing the step 105 when the check valve of the range hood is detected to be abnormal.
Optionally, in step 104, it may be detected whether the cigarette machine check valve is abnormal based on a vibration spectrum of the cigarette machine check valve.
For example, if the vibration frequency of the check valve of the range hood is within the range of 100Hz-500Hz and/or the vibration amplitude of the check valve of the range hood is greater than 0.3mm/S, it can be detected that the check valve of the range hood is abnormal.
The spectrum of the vibration of the cigarette machine check valve may be extracted from the spectrum of the vibration of the cigarette machine components, in which case step 104 is performed after step 102.
Or detecting the vibration frequency spectrum of the check valve of the cigarette machine by using a vibration sensor corresponding to the check valve of the cigarette machine, in this case, the execution sequence among the step 101, the step 102 and the step 104 is not limited, for example, the step 104 may be executed before the step 101, or the step 104 may be executed after the step 102.
Step 105: and judging whether the number of times of pressurized smoke exhaust is greater than a first preset threshold (for example, the first preset threshold is 3), wherein the initial value of the number of times of pressurized smoke exhaust is X, and X is an integer. Preferably, the initial value of the number of pressurized smoke exhausts is 0. When the number of times of supercharging smoke exhaust is judged to be larger than the first preset threshold value, executing the step 107; when it is determined that the number of times of supercharged smoke evacuation is less than or equal to the first preset threshold, step 106 is executed.
Step 106: and increasing the fan rotating speed of the range hood, adding 1 to the number of the pressurized smoke exhaust and returning to the step 104.
In step 106, the fan of the range hood can be increased by at least one gear (the first gear is as much as 100 and 150 rpm) to increase the fan speed; or increasing the rotating speed of a fan of the range hood to the maximum rotating speed, and operating for 10 seconds at the maximum rotating speed; or the rotating speed of the fan of the range hood is increased by a preset rotating speed.
Step 107: judging the damage of the check valve of the range hood.
When judging cigarette machine check valve and damaging, can carry out the check valve and report an emergency and ask for help or increased vigilance to remind the user in time to maintain cigarette machine check valve.
Step 108: detecting whether the impeller of the range hood is abnormal.
Optionally, in step 108, it may be detected whether the cigarette machine impeller is abnormal based on the spectrum of vibration of the cigarette machine impeller.
For example, if the vibration frequency of the cigarette machine impeller is within the range of 10Hz-50Hz, and/or the vibration amplitude of the cigarette machine impeller is greater than 0.5mm/S, then the cigarette machine impeller abnormality can be detected.
The spectrum of the vibration of the cigarette machine impeller may be extracted from the spectrum of the vibration of the cigarette machine components, in which case step 108 is performed after step 102.
Or detecting the vibration spectrum of the cigarette machine impeller by using a vibration sensor corresponding to the cigarette machine impeller, in this case, the execution sequence among the step 101, the step 102 and the step 108 is not limited, for example, the step 108 can be executed before the step 101, or the step 108 can be executed after the step 102.
When the impeller of the cigarette machine is abnormal, the abnormal alarm of the impeller can be carried out so as to remind a user to maintain the impeller of the cigarette machine in time.
In the embodiment of the invention, if the check valve of the range hood is abnormal, the oil smoke cannot be normally discharged, and the rotating speed of the fan of the range hood is increased to pressurize and discharge the smoke, so that the normal discharge of the oil smoke is ensured and the backflow of the oil smoke is avoided. If the number of times of pressurizing smoke exhaust is larger than a first preset threshold value, the fact that the smoke exhaust check valve cannot be recovered to be normal after a plurality of times of pressurizing smoke exhaust is carried out is explained, and then it can be judged that the smoke exhaust check valve cannot be automatically repairably damaged. In addition, the accurate detection of whether the impeller of the cigarette machine is abnormal or not can be realized through the vibration frequency spectrum of the impeller of the cigarette machine.
It should be noted that, in this embodiment, the method for controlling noise reduction of the cigarette making machine includes steps 101 to 108, and of course, the method for controlling noise reduction of the cigarette making machine may include steps 101 to 107; or the smoke machine noise reduction control method can comprise the steps 101 to 103 and the step 108.
EXAMPLE III
The embodiment of the present invention is based on the first embodiment, and a step of determining the number of times of adjusting the compensation spectrum is added between step 102 and step 103. As shown in fig. 3, the method for controlling noise reduction of a cigarette making machine may further include steps 109 to 112 in addition to steps 101 to 103.
Step 109: after step 102, when the vibration frequency spectrum of the cigarette machine component does not meet the set condition, judging whether the adjustment times of the compensation frequency spectrum is greater than a second preset threshold, wherein the initial value of the adjustment times of the compensation frequency spectrum is Y, and Y is an integer (for example, Y = 0). When it is determined that the adjustment frequency of the compensation spectrum is greater than the second preset threshold, performing step 111; when the adjustment number of the compensation spectrum is determined to be less than or equal to the second preset threshold, step 103 of adjusting the compensation spectrum in step 101 is performed.
Step 110: the number of adjustments of the compensation spectrum is increased by 1 and the process returns to step 102.
Step 111: a predetermined action is performed.
Optionally, the predetermined action comprises: the rotating speed of a fan of the range hood is reduced.
Wherein, the fan speed of the cigarette machine can be reduced by one gear (the first gear speed is almost 100rpm-150 rpm).
After step 111, the method for controlling noise reduction of a cigarette making machine may further comprise:
if an instruction for improving the fan rotating speed of the range hood is detected, the fan rotating speed of the range hood needs to be preferentially ensured, the purpose of noise reduction is achieved without sacrificing the fan rotating speed of the range hood, then the fan deceleration and downshift control program is quitted, the fan rotating speed of the range hood is controlled according to the instruction, and the influence on the use experience of a user due to the reduction of the fan rotating speed of the range hood is avoided.
Step 112: the number of adjustments of the compensation spectrum is set to an initial value Y.
In the scheme of the embodiment of the invention, whether the adjustment times of the compensation frequency spectrum is greater than a second preset threshold value or not is judged, and if the adjustment times of the compensation frequency spectrum is greater than the second preset threshold value, the vibration frequency spectrum of the parts of the cigarette machine cannot meet the preset conditions after the compensation frequency spectrum is adjusted for many times, that is, the noise reduction cannot be realized in a vibration compensation mode, and the noise reduction is realized by replacing other modes (executing preset actions) so as to ensure the noise reduction effect of the cigarette machine.
Example four
In the embodiment, on the basis of the third embodiment, the vibration compensation can be respectively carried out on the volute and the machine body. As shown in fig. 4, the noise reduction control method of the cigarette making machine includes steps 201 to 213.
Step 201: and carrying out vibration compensation on the volute according to a preset volute compensation frequency spectrum.
Step 202: and detecting the vibration frequency spectrum of the volute, and entering step 203 when the vibration frequency spectrum of the volute does not meet a preset condition.
Step 203: judging whether the adjustment times of the volute compensation spectrum is greater than a1 (such as a1= 3), wherein the initial value of the adjustment times of the volute compensation spectrum is a0 (such as a0= 0), a0 is an integer, and executing step 206 when the adjustment times of the volute compensation spectrum is judged to be greater than a 1; when it is determined that the number of times the volute compensation spectrum is adjusted is less than or equal to a1, step 204 is performed.
Step 204: the volute compensation spectrum in the above is adjusted.
Step 205: the number of adjustments of the volute compensation spectrum is increased by 1 and the process returns to step 202.
Step 206: the number of adjustments of the volute compensation spectrum is set to the initial value a 0.
Step 207: and carrying out vibration compensation on the machine body according to a preset machine body compensation frequency spectrum.
When the range hood runs, the first vibration sensor detects the vibration frequency and the vibration amplitude of the volute in real time, and the volute compensation frequency spectrum is output according to the vibration frequency and the vibration amplitude of the volute, so that the volute performs vibration compensation according to the volute vibration frequency spectrum. The frequency of the volute compensation frequency spectrum is the same as the vibration frequency of the volute, the amplitude of the volute compensation frequency spectrum is the same as the vibration amplitude of the volute, and the phases of the volute compensation frequency spectrum and the volute are opposite.
Step 208: the vibration spectrum of the body is detected, and when the vibration spectrum of the body does not satisfy a predetermined condition, the process proceeds to step 209.
When the cigarette machine operates, the second vibration sensor detects the vibration frequency and the vibration amplitude of the machine body in real time, and outputs a compensation frequency spectrum of the machine body according to the vibration frequency and the vibration amplitude of the machine body, so that the machine body performs vibration compensation according to the vibration frequency spectrum of the machine body. The frequency of the body compensation frequency spectrum is the same as the vibration frequency of the body, and the amplitude of the body compensation frequency spectrum is the same as the vibration amplitude of the body and has opposite phases.
Step 209: whether the number of times of adjustment of the body compensation spectrum is greater than B1 (e.g., B1= 2) is determined, where the initial value of the number of times of adjustment of the body compensation spectrum is B0 (e.g., B0= 0) and B0 is an integer. When the number of times of adjusting the body compensation spectrum is determined to be greater than B1, execute step 212; when it is determined that the number of times of adjustment of the body compensation spectrum is less than or equal to B1, step 210 is performed.
Step 210: and adjusting the body compensation frequency spectrum.
Step 211: the number of adjustments of the body compensation spectrum is increased by 1.
Step 212: a predetermined action is performed. Optionally, the predetermined action comprises: the rotating speed of a fan of the range hood is reduced.
Step 213: the number of adjustments of the body compensation spectrum is set to an initial value B0.
In the scheme of the embodiment of the invention, the vibration source of the cigarette machine mainly comes from disturbed flow vibration generated in the running process of the fan, self vibration of the motor and the like, so vibration noise reduction is carried out to preferentially solve the vibration of the volute, the volute is firstly subjected to vibration compensation, and if the vibration compensation of the volute can achieve the noise reduction effect, the vibration compensation of the volute is continued, and the vibration compensation of the machine body can not be carried out. If the volute is subjected to vibration compensation and the noise reduction effect cannot be achieved, vibration compensation is performed on the machine body, and therefore noise reduction is achieved better.
In the embodiment, the vibration compensation is performed on the volute, and if the vibration compensation on the volute cannot achieve the noise reduction effect, the vibration compensation is performed on the machine body. Of course, the vibration compensation can be performed on the machine body first, and if the vibration compensation performed on the machine body cannot achieve the noise reduction effect, the vibration compensation is performed on the volute. Or the machine body and the volute are simultaneously subjected to vibration compensation. Or the vibration compensation is carried out on the machine body, and the vibration compensation is not carried out on the volute. Or the volute is subjected to vibration compensation, and the machine body is not subjected to vibration compensation.
EXAMPLE five
On the basis of any one of the first embodiment to the fourth embodiment, the method for controlling noise reduction of the cigarette making machine further comprises the following steps: if the mute mode of the range hood is started, acquiring the sound intensity of the noise of the range hood; and if the sound intensity of the noise of the cigarette machine is greater than the preset mute intensity value, reducing the rotating speed of the fan of the cigarette machine.
Preferably, the mute intensity value is in the range of 60db to 65 db.
It should be noted that, if the sound intensity of the noise of the range hood is greater than the preset mute intensity value, before the rotating speed of the fan of the range hood is reduced, the range hood noise reduction control method may further include: and adjusting the compensation frequency spectrum of the cigarette machine component, and if the sound intensity of the cigarette machine noise cannot be controlled within the range smaller than the mute intensity value by continuously adjusting the compensation frequency spectrum of the cigarette machine component for 5 times, executing the step of reducing the fan rotating speed of the cigarette machine.
In the scheme of the embodiment of the invention, if the mute mode of the cigarette making machine is started, the sound intensity of the noise of the cigarette making machine required by a user is relatively low. If the sound intensity of the noise of the cigarette making machine is less than or equal to the preset mute intensity value, the operation of the cigarette making machine meets the mute requirement of a user; if the sound intensity of the noise of the cigarette machine is greater than the preset mute intensity value, the noise is reduced by reducing the rotating speed of the fan of the cigarette machine, so that the operation of the cigarette machine meets the mute requirement of a user.
EXAMPLE six
On the basis of any one of the first embodiment to the fourth embodiment, the noise reduction control method for the cigarette making machine is used for the cigarette making machine, and as shown in fig. 5, the cigarette making machine comprises: the device comprises a smoke machine main control unit, a vibration frequency spectrum processing unit, a fan control circuit, a fan, a vibration control circuit, a piezoelectric vibrator and a vibration sensor.
The vibration frequency spectrum of the parts of the cigarette machine is detected through the vibration sensor and transmitted to the vibration frequency spectrum processing unit.
The vibration frequency spectrum (namely vibration detection input) of the cigarette machine component is processed through the vibration frequency spectrum processing unit, and the compensation frequency spectrum (namely piezoelectric vibration output) is output to the vibration control circuit, wherein the vibration frequency of the cigarette machine component is the same as the frequency in the compensation frequency spectrum, and the vibration amplitude of the cigarette machine component is the same as the amplitude in the compensation frequency spectrum and has opposite phases.
The vibration control circuit controls the piezoelectric vibrator to generate vibration according to the compensation frequency spectrum output by the vibration frequency spectrum processing unit so as to compensate the vibration generated by the cigarette machine component.
And sending the vibration frequency spectrum of the cigarette machine component detected by the vibration sensor before vibration compensation and the vibration frequency spectrum after vibration compensation to a cigarette machine main control unit through a vibration frequency spectrum processing unit.
And judging whether the vibration frequency spectrum of the cigarette machine component meets a preset condition or not through the cigarette machine main control unit, and sending an adjusting signal to the vibration frequency spectrum processing unit when the vibration frequency spectrum of the cigarette machine component does not meet the preset condition so that the vibration frequency spectrum processing unit adjusts the compensation frequency spectrum of the cigarette machine component according to the adjusting signal.
If the rotating speed of the fan needs to be controlled, a fan control signal is sent to a fan control circuit through a smoke machine main control unit; the rotating speed of the fan is controlled by the fan control unit.
If the abnormity of the check valve and/or the impeller of the cigarette machine needs to be detected, the vibration frequency spectrum of the cigarette machine component can be analyzed through the cigarette machine main control unit, so that the vibration frequency spectrum of the check valve and/or the vibration frequency spectrum of the impeller of the cigarette machine can be extracted from the vibration frequency spectrum of the cigarette machine component.
The number of piezoelectric vibrators and vibration sensors on a range hood may be one or more.
If the number of piezoelectric vibrators and vibration sensors is one, the piezoelectric vibrators and vibration sensors may be located on the same cigarette machine component, e.g., both the piezoelectric vibrators and the vibration sensors are located on the volute or the body. The piezoelectric vibrator and the vibration sensor can also be arranged on different parts of the cigarette machine, for example, the piezoelectric vibrator is arranged on a volute, and the vibration sensor is arranged on the machine body.
If the number of the piezoelectric vibrators and the vibration sensors is plural, respectively, the vibration sensors include: the first vibration sensor and/or the second vibration sensor. The piezoelectric vibrator includes: the first piezoelectric vibrator and/or the second piezoelectric vibrator.
As shown in fig. 6 to 8, a first vibration sensor 1 and a first piezoelectric vibrator 2 are provided on the scroll casing. The volute is also provided with a fan and an impeller.
The first vibration sensor 1 is mounted outside the volute and completely attached to the outside of the volute, so that vibration generated by operation of the volute can be fully detected by the first vibration sensor 1. The first vibration sensor 1 includes, but is not limited to, a combination of one or more of the following: piezoelectric sensors, gyro-type sensors, acceleration-type sensors.
First piezoelectric vibrator 2 carries out the complete installation through the cambered surface shell of blotter 3 with the spiral case, when guaranteeing that the compensation vibration that first piezoelectric vibrator 2 produced transmits for the spiral case, can avoid again that the clearance that first piezoelectric vibrator 2 direct mount exists on the spiral case causes unnecessary noise to take place. The material of the cushion pad 3 may be foam, silica gel, etc.
As shown in fig. 9, the body includes a first body 4 and a second body 5. A second vibration sensor 6 and a second piezoelectric vibrator 7 may be provided on the second body 5.
The machine body is also a noise source generated by vibration noise, the machine body can be processed by adopting welding, riveting or bending processes, and the problem that the large-area machine body can generate resonance or oscillation when vibrating at low frequency and the like can be solved.
Because the cigarette machine is installed on user's kitchen wall, the rear side is installed with the wall laminating, and the vibration is less for other organism faces, and if carry out vibration compensation to it, the effect also can be relative little. The area of the two sides of the machine body is larger, and the supporting structure is less, so the vibration source of the machine body is mainly the two sides of the machine body. Therefore, vibration compensation can be performed with emphasis on both sides and the top of the body. The second vibration sensor 6 can be installed on the both sides panel beating of organism or top, for example on the both sides inner wall of second vibration sensor 6 installation and organism, laminate with the organism completely. The number of the second vibration sensors 6 may be one or more. The second vibration sensor 6 includes, but is not limited to, a combination of one or more of the following: piezoelectric sensors, gyro-type sensors, acceleration-type sensors. The second piezoelectric vibrator 7 can be reliably connected to the body through the cushion pad.
The audio collector 8 can be arranged on the first body 4 and is used for collecting noise generated when the cigarette making machine operates.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A method for controlling noise reduction of a range hood is characterized by comprising the following steps:
performing vibration compensation on parts of the cigarette machine according to a preset compensation frequency spectrum;
detecting a vibration spectrum of said range hood component;
if the vibration frequency spectrum of the cigarette machine component does not meet a preset condition, adjusting the compensation frequency spectrum;
further comprising:
detecting whether a check valve of the range hood is abnormal;
when the check valve of the range hood is abnormal, judging whether the number of pressurized smoke exhaust times is greater than a first preset threshold value, wherein the initial value of the number of pressurized smoke exhaust times is X, and X is an integer;
if the number of times of the pressurized smoke exhaust is smaller than or equal to the first preset threshold value, increasing the rotating speed of a fan of the range hood, and adding 1 to the number of times of the pressurized smoke exhaust; and if the number of times of the pressurized smoke exhaust is greater than the first preset threshold value, judging that the check valve of the range hood is damaged.
2. The method for controlling noise reduction of a cigarette machine according to claim 1, wherein the detecting whether the check valve of the cigarette machine is abnormal comprises:
detecting whether the cigarette machine check valve is abnormal according to the vibration frequency spectrum of the cigarette machine check valve.
3. The noise reduction control method for the cigarette machine according to claim 1, further comprising:
detecting whether the impeller of the cigarette machine is abnormal according to the vibration frequency spectrum of the impeller of the cigarette machine.
4. The noise reduction control method for the cigarette machine according to claim 1, further comprising:
if the mute mode of the cigarette machine is started, acquiring the sound intensity of the noise of the cigarette machine;
and if the sound intensity of the noise of the cigarette machine is greater than the preset mute intensity value, reducing the rotating speed of the fan of the cigarette machine.
5. The noise reduction control method for a cigarette machine according to claim 1, wherein the predetermined condition includes: the vibration amplitude of the cigarette machine component after vibration compensation is smaller than the vibration amplitude before vibration compensation, and/or the noise audio amplitude of the cigarette machine component after vibration compensation is smaller than the noise audio amplitude before vibration compensation.
6. The noise reduction control method for a cigarette machine according to claim 5, wherein if the predetermined condition includes: the vibration amplitude of the cigarette machine component after vibration compensation is smaller than the vibration amplitude before vibration compensation;
adjusting the compensation spectrum comprises:
if the vibration amplitude of the cigarette machine component after vibration compensation is larger than the vibration amplitude before vibration compensation, resetting the compensation frequency spectrum according to the current vibration frequency spectrum of the cigarette machine component;
and if the vibration amplitude of the cigarette machine component after vibration compensation is equal to the vibration amplitude before vibration compensation, keeping the compensation frequency in the compensation frequency spectrum unchanged, and increasing the compensation amplitude in the compensation frequency spectrum.
7. The method for controlling noise reduction of a cigarette making machine according to claim 1, wherein if the vibration frequency spectrum of the cigarette making machine component does not meet the predetermined condition, before adjusting the compensation frequency spectrum, the method further comprises:
judging whether the adjustment times of the compensation frequency spectrum are larger than a second preset threshold value or not, wherein the initial value of the adjustment times of the compensation frequency spectrum is Y, and Y is an integer;
if the adjustment times of the compensation frequency spectrum are judged to be less than or equal to a second preset threshold value, executing the step of adjusting the compensation frequency spectrum, and adding 1 to the adjustment times of the compensation frequency spectrum; and if the adjustment times of the compensation frequency spectrum are judged to be larger than a second preset threshold value, executing a preset action, and setting the adjustment times of the compensation frequency spectrum as an initial value Y.
8. The method of noise reduction control for a cigarette machine according to claim 7, wherein the predetermined action comprises: reducing the rotating speed of a fan of the range hood;
after reducing the fan rotational speed of the cigarette machine, still include:
and if an instruction for increasing the fan rotating speed of the range hood is detected, controlling the fan rotating speed of the range hood according to the instruction.
9. The method of noise reduction control for a cigarette machine according to claim 1, wherein a vibration spectrum of the cigarette machine component is detected by a vibration sensor.
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| CN112361417A (en) * | 2020-12-10 | 2021-02-12 | 珠海格力电器股份有限公司 | Ultrasonic cleaning control method and device for range hood and range hood |
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| CN110529908A (en) * | 2019-09-29 | 2019-12-03 | 珠海格力电器股份有限公司 | The method of range hood control |
| TWI742520B (en) * | 2020-01-20 | 2021-10-11 | 大陸商寧波酷旺智能科技有限公司 | Noise reduction system using artificial intelligence and method thereof |
| CN114576661B (en) * | 2020-11-30 | 2023-05-05 | 广东美的白色家电技术创新中心有限公司 | Smoke machine |
| CN114893260B (en) * | 2022-04-13 | 2024-03-15 | 东风汽车股份有限公司 | Simple structure for eliminating noise of supercharger and testing method thereof |
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Effective date of registration: 20230609 Address after: Building 2, No. 52, 22nd Street, Baiyang Street, Qiantang New District, Hangzhou City, Zhejiang Province, 310000 Patentee after: Hangzhou Jiuchuang Home Appliances Co.,Ltd. Address before: No. 999, Mei Li Road, Huaiyin District, Ji'nan, Shandong Patentee before: JOYOUNG Co.,Ltd. |