CN108954431A - A kind of band can reduce the kitchen ventilator of the cellular noise filtering device of specific unifrequency - Google Patents
A kind of band can reduce the kitchen ventilator of the cellular noise filtering device of specific unifrequency Download PDFInfo
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- CN108954431A CN108954431A CN201810772825.3A CN201810772825A CN108954431A CN 108954431 A CN108954431 A CN 108954431A CN 201810772825 A CN201810772825 A CN 201810772825A CN 108954431 A CN108954431 A CN 108954431A
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- filtering device
- noise filtering
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Ventilation (AREA)
Abstract
A kind of band can reduce the kitchen ventilator of the cellular noise filtering device of specific unifrequency, be provided with smoke machine main body and can reduce the cellular noise filtering device of specific frequency noise, cellular noise filtering device is assemblied in smoke machine main body.The kitchen ventilator reaches the noise reduction of specific frequency noise by adjusting the combination settings of the apertures of different through-holes, the edge of through-hole at a distance from the edge minimum range of adjacent through-holes or cellular noise filtering device and smoke machine main body.The cellular noise filtering device is able to maintain long-term good noise reduction effect, which, which has, is easy to arrange, and dust, the grease on surface etc. can remove cleaning.The cellular noise filtering device has the advantages that low cost, reliability are high.The material of the cellular noise filtering device be anticorrosive, chemical resistance, be hardly damaged with advantage easy to clean, while can be reduced for specific noise frequency.
Description
Technical field
The present invention relates to kitchen ventilator field, in particular to a kind of band can reduce the cellular noise filtering device of specific unifrequency
Kitchen ventilator.
Background technique
It is chronically in the environment of high noisy, the hearing of people is often damaged, and can also be made in the environment of having noise for a long time
At user emotion problem.As people's quality of the life improves, people are also lower and lower to the tolerance of noise.Therefore kitchen ventilator
Noise reduction is also got more and more attention.
Kitchen ventilator noise reduction in the prior art is mostly the reduction that noise is realized by active noise reduction and passive noise reduction mode.
Active noise reduction mode can only act on noise of the frequency within 1000Hz, can only be by passive for the noise greater than 1000Hz
Noise reduction technology processing.And the specific noise frequency of reduction can be arranged in the passive denoising device of the prior art, for not
Same kitchen ventilator, the frequency for the maximum noise that may mainly generate is not and identical, the kitchen ventilator of the prior art, for main
Frequency into noise reduction.
Therefore in view of the shortcomings of the prior art, providing the oil that a kind of band can reduce the cellular noise filtering device of specific unifrequency
Smoke machine is very necessary to solve prior art deficiency.
Summary of the invention
A kind of band is provided it is an object of the invention to avoid in place of the deficiencies in the prior art can reduce specific unifrequency bee
The kitchen ventilator of nido noise filtering device.The band can reduce the oil smoke function drop pair of the cellular noise filtering device of specific unifrequency
Specific unifrequency noise is reduced.
Above-mentioned purpose of the invention is realized by following technical measures:
The kitchen ventilator that a kind of band can reduce the cellular noise filtering device of specific unifrequency is provided, be provided with smoke machine main body and
The cellular noise filtering device of specific frequency noise can be reduced, cellular noise filtering device is assemblied in smoke machine main body.
The cellular noise filtering device is distributed with multiple for offsetting the through-hole of specific unifrequency noise.
The cellular noise filtering device is stereochemical structure, and through-hole is through stereochemical structure.
The present invention is by adjusting the edge minimum range in the aperture of different through-holes, the edge of through-hole and adjacent through-holes or bee
Combination settings of the nido noise filtering device at a distance from smoke machine main body reach the noise reduction of specific frequency noise.
Preferably, the aperture of above-mentioned through-hole is defined as d, and d≤30mm.
Preferably, the edge minimum range of the edge of above-mentioned through-hole and adjacent through-holes is b, and b is the arbitrary value greater than 0.
Preferably, the shape of above-mentioned through-hole is circle, ellipse, triangle, square, rectangle, pentagon, six sides
At least one of shape, diamond shape or irregular shape.
Preferably, above-mentioned through-hole is rectilinear through-hole, corresponding through-hole while with cellular noise filtering device while it is vertical or
Person is parallel.
Preferably, there are gaps between above-mentioned cellular noise filtering device and the immediate wall surface of smoke machine main body, by between
The distance definition of gap is H1。
Preferably, above-mentioned smoke machine main body is provided with sound-absorbing part, the gap that sound-absorbing part is assemblied in.
The thickness of the sound-absorbing part is defined as H2, and H2≤0.6H1。
Preferably, above-mentioned sound-absorbing part is fiber, PP cotton, polyester fiber, Carbon fibe or porous foam；Or
The sound-absorbing part is porous plate.
Preferably, above-mentioned cellular noise filtering device is ceramic honeycomb noise filtering device or carbon honeycomb formula noise
Filter device.
Preferably, the surface of above-mentioned cellular noise filtering device is provided with the nano coating of oleophobic.
Preferably, it is 100Hz~8000Hz that above-mentioned cellular noise filtering device, which eliminates noisy frequency range,.
A kind of band of the invention can reduce the kitchen ventilator of the cellular noise filtering device of specific unifrequency, be provided with smoke machine master
Body and the cellular noise filtering device that can reduce specific frequency noise, cellular noise filtering device are assemblied in smoke machine main body.
The cellular noise filtering device is distributed with multiple for offsetting the through-hole of specific unifrequency noise.The cellular noise mistake
Filter device is stereochemical structure, and through-hole is through stereochemical structure.The kitchen ventilator is by adjusting the aperture of different through-holes, the edge of through-hole
Reach with the edge minimum range of adjacent through-holes or cellular noise filtering device with the combination settings at a distance from smoke machine main body
The noise reduction of specific frequency noise.The cellular noise filtering device is able to maintain long-term good noise reduction effect, the cellular noise
Filter device, which has, to be easy to arrange, and dust, the grease on surface etc. can remove cleaning.The cellular noise filtering device has low
The high advantage of cost, reliability.The material of the cellular noise filtering device is anticorrosive, chemical resistance, is hardly damaged and easily
The advantages of cleaning, while can be reduced for specific noise frequency.
Detailed description of the invention
Using attached drawing, the present invention is further illustrated, but the content in attached drawing is not constituted to any limit of the invention
System.
Fig. 1 is the cellular noise filtering device schematic perspective view of embodiment 1.
Fig. 2 is the schematic diagram of Fig. 1, and the A in Fig. 2 is main view, and the B in Fig. 2 is the schematic cross-section in the direction A in Fig. 2,
C in Fig. 2 is top view.
Fig. 3 is the aperture of through-hole of Fig. 2 and the edge minimum range schematic diagram at the edge of through-hole and adjacent through-holes.
Fig. 4 shows for the range hood structure that a kind of band of embodiment 2 can reduce the cellular noise filtering device of specific unifrequency
It is intended to.
Fig. 5 is the cellular noise filtering device stereoscopic schematic diagram of embodiment 4.
Fig. 1 includes into Fig. 5:
Cellular noise filtering device 1, through-hole 11,
Smoke machine main body 2, sound-absorbing part 21.
Specific embodiment
Technical solution of the present invention is described further with the following Examples.
Embodiment 1.
A kind of kitchen ventilator that band can reduce the cellular noise filtering device of specific unifrequency is provided with as shown in Figures 1 to 3
Smoke machine main body 2 and the cellular noise filtering device 1 that can reduce specific frequency noise, cellular noise filtering device 1 are assemblied in
Smoke machine main body 2.Cellular noise filtering device 1 is distributed with multiple for offsetting the through-hole 11 of specific unifrequency noise.It is cellular
Noise filtering device 1 is stereochemical structure, and through-hole 11 is through stereochemical structure.
The present invention is by adjusting the aperture of different through-holes 11, the edge of through-hole 11 and the edge minimum range of adjacent through-holes 11
Or combination settings of the cellular noise filtering device 1 at a distance from smoke machine main body 2 reach the noise reduction of specific frequency noise.
The aperture of through-hole 11 of the invention is defined as d, and d≤30mm.The edge of through-hole 11 and the edge of adjacent through-holes 11
Minimum range is b, and b is the arbitrary value greater than 0.
The present invention in the constant situation of aperture d, get over by the value of the edge minimum range b at the edge and adjacent through-holes 11 of through-hole 11
The target noise frequency of small elimination is bigger.In the edge of through-hole 11 and the constant situation of edge minimum range b of adjacent through-holes 11
Under, the smaller target noise frequency to be eliminated of the value of aperture d is with regard to smaller.
The shape of through-hole 11 of the present invention is circle, ellipse, triangle, square, rectangle, pentagon, hexagon, water chestnut
At least one of shape or irregular shape.The present embodiment through-hole 11 is preferably shaped to hexagon.
It should be noted that the shape of through-hole 11 may be ellipse, triangle, square, rectangle, pentagon, six sides
Shape, diamond shape or irregular shape, or the combination of the shape of above-mentioned a variety of through-holes 11, specific embodiment is with reality
Depending on situation.
Through-hole 11 is rectilinear through-hole 11, corresponding through-hole 11 while with cellular noise filtering device 1 while it is vertical or flat
Row.
Denoising device principle of the invention: cellular noise filtering device 1 can be in limited closed space, in noise
When source travels to cellular noise filtering device 1, noise reduction is carried out.Sound wave usually touch cellular noise filtering device 1 with
Opposite direction is propagated, so most incidence wave can be interfered with back wave.
Cellular noise filtering device 1 carries out noise reduction using the principle of resonance, when the edge of aperture d and through-hole 11 and phase
After the edge minimum range b of adjacent through-hole 11 is determined, specific noise frequency and the honeycomb for being already provided with target frequency in space
Formula noise filtering device 1 forms covibration.
Through-hole 11 of the invention forms independent space in cellular noise filtering device 1, it is ensured that cellular to make an uproar
Sound filter device 1 keeps the resonant frequency of itself in sound wave under incidence angles degree, is conducive to the drop to specific frequency noise
The stability made an uproar.
When resonate occur when, the sound wave of oscillation can intensely pierce into out through-hole 11 back and forth in air, and the sound of noise can be
It is converted to friction loss during this, achievees the effect that eliminate target frequency noise.
The band can reduce the kitchen ventilator of the cellular noise filtering device of specific unifrequency, be provided with smoke machine main body 2 and can drop
The cellular noise filtering device 1 of low specific frequency noise, cellular noise filtering device 1 are assemblied in smoke machine main body 2.The oil smoke
Machine is by adjusting the apertures of different through-holes 11, the edge of through-hole 11 and the edge minimum range of adjacent through-holes 11 or cellular makes an uproar
Combination settings of the sound filter device 1 at a distance from smoke machine main body 2 reach the noise reduction of specific frequency noise.The cellular noise filtering
Device 1 is able to maintain long-term good noise reduction effect, which, which has, is easy to arrange, dust, the oil on surface
Rouge etc. can remove cleaning.The cellular noise filtering device 1 has the advantages that low cost, reliability are high.The cellular noise
The material of filter device 1 is anticorrosive, chemical resistance and is hardly damaged.It can be reduced for specific noise frequency.
Embodiment 2.
A kind of band can reduce the kitchen ventilator of the cellular noise filtering device of specific unifrequency, as shown in figure 4, other features with
Embodiment 1 is identical, the difference is that, the shape of the through-hole 11 of the present embodiment is circle.
Compared with Example 1, round upper relatively easy in technique production, and because of the interference of not no corner angle, noise reduction effect is most
It is excellent.
There are gaps between cellular noise filtering device 1 and the immediate wall surface of smoke machine main body 2, and the distance in gap is determined
Justice is H1。
Denoising device principle of the invention: cellular noise filtering device 1 can be in limited closed space, in noise
When source travels to cellular noise filtering device 1, noise reduction is carried out.Sound wave usually touch cellular noise filtering device 1 with
Opposite direction is propagated, so most incidence wave can be interfered with back wave.In the fixed distance of characteristic about noise source wavelength
A quarter away from i.e. H at degree1, the speed of particle reaches highest, because the present invention passes through in noise filter and smoke machine main body 2
The distance of wall surface noise source wavelength a quarter away from degree at, the noise of the wavelength can be effectively eliminated.
Smoke machine main body 2 is provided with sound-absorbing part 21, the gap that sound-absorbing part 21 is assemblied in.The thickness of sound-absorbing part 21 is defined as H2,
And H2≤0.6H1。
The density and material of sound-absorbing part 21 also have an important influence, sound wave can directly through the sound-absorbing part of extremely-low density,
The frictional wear of sound energy can not be increased；Under high density, noise sound wave then can be reflected away directly, can not be entered cellular
The through-hole 11 of noise filtering device 1.Therefore sound-absorbing part 21 of the invention be preferably fiber, PP cotton, polyester fiber, Carbon fibe or
Porous foam.Or sound-absorbing part 21 is porous plate.
The determinant of the resonant frequency of cellular noise filtering device 1 of the invention: the aperture of through-hole 11, through-hole 11
At a distance from the edge minimum range or cellular noise filtering device 1 and smoke machine main body 2 of edge and adjacent through-holes 11 and through-hole
Whether 11 be independent space inside cellular noise filtering device 1, just can determine that the resonance of cellular noise filtering device 1
Frequency achievees the purpose that reduce specific frequency.
The present embodiment increases sound-absorbing part 21 compared with embodiment 1, and the setting of sound-absorbing part 21 can increase the consume of friction, reinforces drop
It makes an uproar effect.
Embodiment 3.
A kind of band can reduce the kitchen ventilator of the cellular noise filtering device of specific unifrequency, other features and 1 phase of embodiment
Together, the difference is that, the cellular noise filtering device 1 of the present embodiment is ceramic honeycomb noise filtering device 1.It is cellular
The surface of noise filtering device 1 is provided with the nano coating of oleophobic.
It should be noted that cellular noise filtering device 1 of the invention is preferably ceramic honeycomb noise filtering device 1,
Can also be carbon honeycomb formula noise filtering device 1, specific embodiment according to the actual situation depending on.
It is 100Hz~8000Hz that cellular noise filtering device 1 of the invention, which eliminates noisy frequency range,.
The cellular noise filtering device 1 of the present embodiment has the advantages that durable, oleophobic and elimination noisy frequency range are wide.
Embodiment 4.
A kind of band can reduce the kitchen ventilator of the cellular noise filtering device of specific unifrequency, as shown in figure 5, other features with
Embodiment 1 is identical, the difference is that, the shape of the through-hole 11 of the present embodiment is hexagon and circular combination.
The present embodiment compared with Example 1, increases the diversity of 11 shape of through-hole setting.
Embodiment 5.
A kind of band can reduce the design of the kitchen ventilator of the cellular noise filtering device of specific unifrequency:
Target frequency: 8000Hz.
The aperture d=10mm of through-hole 11, the edge of through-hole 11 and the edge minimum range b=23mm, H of adjacent through-holes 111
=2.5mm.
Therefore the cellular noise filtering device 1 of the kitchen ventilator is only in the spy with the corresponding through-hole 11 of above-mentioned target frequency
Property can effectively eliminate the noise of corresponding frequency.
It should be noted that the present embodiment only lists the design parameter of corresponding target frequency, table can not only for the present invention
For the noise of this frequency, only corresponding different parameter, the present invention can eliminate specific unifrequent noise.
Embodiment 6.
A kind of band can reduce the design of the kitchen ventilator of the cellular noise filtering device of specific unifrequency:
Target frequency: 800Hz.
The aperture d=5mm of through-hole 11, the edge of through-hole 11 and the edge minimum range b=23mm, H of adjacent through-holes 111=
20mm。
Therefore the cellular noise filtering device 1 of the kitchen ventilator is only in the spy with the corresponding through-hole 11 of above-mentioned target frequency
Property can effectively eliminate the noise of corresponding frequency.
It should be noted that the present embodiment only lists the design parameter of corresponding target frequency, table can not only for the present invention
For the noise of this frequency, only corresponding different parameter, the present invention can eliminate specific unifrequent noise.
Embodiment 7.
A kind of band can reduce the design of the kitchen ventilator of the cellular noise filtering device of specific unifrequency:
Target frequency: 100Hz.
The aperture d=2mm of through-hole 11, the edge of through-hole 11 and the edge minimum range b=23mm, H of adjacent through-holes 11=
50mm。
Therefore the cellular noise filtering device 1 of the kitchen ventilator is only in the spy with the corresponding through-hole 11 of above-mentioned target frequency
Property can effectively eliminate the noise of corresponding frequency.
It should be noted that the present embodiment only lists the design parameter of corresponding target frequency, table can not only for the present invention
For the noise of this frequency, only corresponding different parameter, the present invention can eliminate specific unifrequent noise.
Embodiment 8.
A kind of band can reduce the design of the kitchen ventilator of the cellular noise filtering device of specific unifrequency:
Target frequency: 7000Hz.
The aperture d=10mm of through-hole 11, the edge of through-hole 11 and the edge minimum range b=23mm, H of adjacent through-holes 11=
2.6mm。
Therefore the cellular noise filtering device 1 of the kitchen ventilator is only in the spy with the corresponding through-hole 11 of above-mentioned target frequency
Property can effectively eliminate the noise of corresponding frequency.
It should be noted that the present embodiment only lists the design parameter of corresponding target frequency, table can not only for the present invention
For the noise of this frequency, only corresponding different parameter, the present invention can eliminate specific unifrequent noise.
Embodiment 9.
A kind of band can reduce the design of the kitchen ventilator of the cellular noise filtering device of specific unifrequency:
Target frequency: 5000Hz.
The aperture d=10mm of through-hole 11, the edge of through-hole 11 and the edge minimum range b=25mm, H of adjacent through-holes 111
=2.5mm.
Therefore the cellular noise filtering device 1 of the kitchen ventilator is only in the spy with the corresponding through-hole 11 of above-mentioned target frequency
Property can effectively eliminate the noise of corresponding frequency.
It should be noted that the present embodiment only lists the design parameter of corresponding target frequency, table can not only for the present invention
For the noise of this frequency, only corresponding different parameter, the present invention can eliminate specific unifrequent noise.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than protects to the present invention
The limitation of range, although the invention is described in detail with reference to the preferred embodiments, those skilled in the art should be managed
Solution, can be with modifying or equivalently replacing the technical solution of the present invention, without departing from the essence and model of technical solution of the present invention
It encloses.
Claims (10)
1. the kitchen ventilator that a kind of band can reduce the cellular noise filtering device of specific unifrequency, it is characterised in that: it is provided with smoke machine
Main body and the cellular noise filtering device that can reduce specific frequency noise, cellular noise filtering device are assemblied in smoke machine master
Body；
The cellular noise filtering device is distributed with multiple for offsetting the through-hole of specific unifrequency noise；
The cellular noise filtering device is stereochemical structure, and through-hole is through stereochemical structure.
2. a kind of band according to claim 1 can reduce the kitchen ventilator of the cellular noise filtering device of specific unifrequency,
It is characterized by the edge in the aperture, through-hole that adjust different through-holes and the edge minimum range or cellular of adjacent through-holes
Combination settings of the noise filtering device at a distance from smoke machine main body reach the noise reduction of specific frequency noise.
3. band according to claim 2 can reduce the kitchen ventilator of the cellular noise filtering device of specific unifrequency, feature
Be: the aperture of the through-hole is defined as d, and d≤30mm.
4. band according to claim 3 can reduce the kitchen ventilator of the cellular noise filtering device of specific unifrequency, feature
Be: the edge minimum range of the edge of the through-hole and adjacent through-holes is b, and b is the arbitrary value greater than 0.
5. band according to claim 4 can reduce the kitchen ventilator of the cellular noise filtering device of specific unifrequency, feature
Be: the shape of the through-hole be circle, ellipse, triangle, square, rectangle, pentagon, hexagon, diamond shape or
At least one of irregular shape.
6. band according to claim 5 can reduce the kitchen ventilator of the cellular noise filtering device of specific unifrequency, feature
Be: the through-hole is rectilinear through-hole, corresponding through-hole while with cellular noise filtering device while it is vertical or parallel.
7. according to claim 6 with the kitchen ventilator that can reduce the cellular noise filtering device of specific unifrequency, feature exists
In: there are gaps between the cellular noise filtering device and the immediate wall surface of smoke machine main body, by the distance definition in gap
For H1。
8. according to claim 7 with the kitchen ventilator that can reduce the cellular noise filtering device of specific unifrequency, feature exists
In: the smoke machine main body is provided with sound-absorbing part, the gap that sound-absorbing part is assemblied in；
The thickness of the sound-absorbing part is defined as H2, and H2≤0.6H1。
9. according to claim 8 with the kitchen ventilator that can reduce the cellular noise filtering device of specific unifrequency, feature exists
In: the sound-absorbing part is fiber, PP cotton, polyester fiber, Carbon fibe or porous foam；Or
The sound-absorbing part is porous plate.
10. band according to claim 9 can reduce the kitchen ventilator of the cellular noise filtering device of specific unifrequency, feature
Be: the cellular noise filtering device is ceramic honeycomb noise filtering device or carbon honeycomb formula noise filtering device；
The surface of the cellular noise filtering device is provided with the nano coating of oleophobic；
It is 100Hz~8000Hz that the cellular noise filtering device, which eliminates noisy frequency range,.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810772825.3A CN108954431A (en) | 2018-07-14 | 2018-07-14 | A kind of band can reduce the kitchen ventilator of the cellular noise filtering device of specific unifrequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810772825.3A CN108954431A (en) | 2018-07-14 | 2018-07-14 | A kind of band can reduce the kitchen ventilator of the cellular noise filtering device of specific unifrequency |
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| CN108954431A true CN108954431A (en) | 2018-12-07 |
Family
ID=64483181
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| CN201810772825.3A Pending CN108954431A (en) | 2018-07-14 | 2018-07-14 | A kind of band can reduce the kitchen ventilator of the cellular noise filtering device of specific unifrequency |
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| CN207352959U (en) * | 2017-09-26 | 2018-05-11 | 国网上海市电力公司 | A kind of locally resonant type combining structure of substation's noise reduction |
| CN108172208A (en) * | 2018-03-28 | 2018-06-15 | 贵州大学 | A kind of locally resonant chirality honeycomb coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2656683Y (en) * | 2003-11-06 | 2004-11-17 | 宁波方太厨具有限公司 | Noise reducing casing for kitchen ventilator |
| CN201277205Y (en) * | 2008-10-24 | 2009-07-22 | 昆明理工大学 | Denoising centrifugal ventilation machine |
| DE102013100271A1 (en) * | 2013-01-11 | 2014-07-17 | Miele & Cie. Kg | Hood |
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Application publication date: 20181207 |