CN108954436A - A kind of kitchen ventilator with the cellular noise filtering device of multi-frequency - Google Patents
A kind of kitchen ventilator with the cellular noise filtering device of multi-frequency Download PDFInfo
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- CN108954436A CN108954436A CN201810772846.5A CN201810772846A CN108954436A CN 108954436 A CN108954436 A CN 108954436A CN 201810772846 A CN201810772846 A CN 201810772846A CN 108954436 A CN108954436 A CN 108954436A
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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)
- Ventilation (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
A kind of kitchen ventilator with the cellular noise filtering device of multi-frequency is provided with smoke machine main body and can reduce the cellular noise filtering device of multi-frequency of multi-frequency noise, and the cellular noise filtering device of multi-frequency is assemblied in smoke machine main body.The kitchen ventilator reaches the noise reduction of multi-frequency noise by adjusting the combination settings of the apertures of different through-holes, the edge of through-hole at a distance from the cellular noise filtering device of edge minimum range or multi-frequency of adjacent through-holes and smoke machine main body.The cellular noise filtering device of the multi-frequency is able to maintain long-term good noise reduction effect, and the cellular noise filtering device of the multi-frequency, which has, to be easy to arrange, and dust, the grease on surface etc. can remove cleaning.The cellular noise filtering device of the multi-frequency has the advantages that low cost, reliability are high.The material of the cellular noise filtering device of the multi-frequency be anticorrosive, chemical resistance, be hardly damaged with advantage easy to clean, while can be reduced for multi-frequency noise frequency.
Description
Technical field
The present invention relates to kitchen ventilator field, in particular to a kind of kitchen ventilator with the cellular noise filtering device of multi-frequency.
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 passive denoising device of the prior art can only be handled for the noise of single-frequency section, it cannot be right
The noise of multiband carries out noise reduction.Since the noisy frequency range that kitchen ventilator generates can be 100Hz~8000Hz, it is clear that existing
In technology good noise reduction effect can not be generated for kitchen ventilator for the passive denoising device of single-frequency section.
Therefore in view of the shortcomings of the prior art, providing a kind of kitchen ventilator with the cellular noise filtering device of multi-frequency to solve
Prior art deficiency is very necessary.
Summary of the invention
A kind of cellular noise mistake of band multi-frequency is provided it is an object of the invention to avoid the deficiencies in the prior art place
Filter the kitchen ventilator of device.The kitchen ventilator with the cellular noise filtering device of multi-frequency have can reduce the excellent of multi-frequency noise
Point.
Above-mentioned purpose of the invention is realized by following technical measures:
A kind of kitchen ventilator with the cellular noise filtering device of multi-frequency is provided, smoke machine main body is provided with and multifrequency can be reduced
The cellular noise filtering device of the multi-frequency of rate noise, the cellular noise filtering device of multi-frequency are assemblied in smoke machine main body.
The cellular noise filtering device of multi-frequency is distributed with multiple for offsetting the through-hole of multi-frequency noise.
The cellular noise filtering device of multi-frequency is stereochemical structure, and through-hole is through stereochemical structure.
Preferably, the aperture of above-mentioned through-hole is defined as d.
Preferably, above-mentioned 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 value of above-mentioned b is multiple.
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 more
Combination settings of the cellular noise filtering device of frequency at a distance from smoke machine main body reach multi-frequency noise noise reduction.
Preferably, above-mentioned through-hole is rectilinear through-hole, corresponding through-hole while with the cellular noise filtering device of multi-frequency while
It is vertical or parallel；Or
The through-hole is bevel edge through-hole, and the longitudinal section of through-hole and the side of the cellular noise filtering device of multi-frequency are at angle a；
Or
The side of the through-hole longitudinal section is curve；Or
The side of the longitudinal section of the through-hole is at least one of broken line.
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, there is sky between the cellular noise filtering device of above-mentioned multi-frequency and the immediate wall surface of smoke machine main body
The distance definition in gap is H by gap1。
Preferably, above-mentioned smoke machine main body is provided with sound-absorbing part, the gap that sound-absorbing part is assemblied in.
Preferably, the thickness of above-mentioned 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, the cellular noise filtering device of above-mentioned multi-frequency be the cellular noise filtering device of ceramic multi-frequency or
The cellular noise filtering device of carbon multi-frequency.
Preferably, the surface of the cellular noise filtering device of above-mentioned multi-frequency is provided with the nano coating of oleophobic.
Preferably, it is 100Hz~8000Hz that the cellular noise filtering device of above-mentioned multi-frequency, which eliminates noisy frequency range,.
A kind of kitchen ventilator with the cellular noise filtering device of multi-frequency of the invention is provided with smoke machine main body and can reduce
The cellular noise filtering device of the multi-frequency of multi-frequency noise, the cellular noise filtering device of multi-frequency are assemblied in smoke machine main body.
The cellular noise filtering device of multi-frequency is distributed with multiple for offsetting the through-hole of multi-frequency noise.The multi-frequency honeycomb
Formula noise filtering device is stereochemical structure, and through-hole is through stereochemical structure.The kitchen ventilator by adjusting different through-holes aperture, logical
The edge in hole is at a distance from the cellular noise filtering device of edge minimum range or multi-frequency of adjacent through-holes and smoke machine main body
Combination settings reach the noise reduction of multi-frequency noise.The cellular noise filtering device of the multi-frequency is able to maintain long-term good noise reduction
Effect, the cellular noise filtering device of the multi-frequency, which has, to be easy to arrange, and dust, the grease on surface etc. can remove cleaning.It should
The cellular noise filtering device of multi-frequency has the advantages that low cost, reliability are high.The cellular noise filtering device of the multi-frequency
Material be anticorrosive, chemical resistance, be hardly damaged with advantage easy to clean, while can for multi-frequency noise frequency carry out
It reduces.
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 multi-frequency of embodiment 1.
Fig. 2 is the multi-angle schematic diagram in Fig. 1, and the A in Fig. 2 is main view, and the B figure in Fig. 2 is that the section of the A in 2 shows
It is intended to, the 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 is the cellular noise filtering device multi-angle schematic diagram of multi-frequency of embodiment 2, and the A in Fig. 4 is main view,
B in Fig. 4 is the schematic cross-section of the A in Fig. 4, and the C in Fig. 4 is top view.
Fig. 5 is the cellular noise filtering device multi-angle schematic diagram of multi-frequency of embodiment 3, and the A in Fig. 5 is main view,
B in Fig. 5 is the schematic cross-section of the A in Fig. 5, and the C in Fig. 5 is top view.
Fig. 6 is a kind of kitchen ventilator stereoscopic schematic diagram with the cellular noise filtering device of multi-frequency of embodiment 3.
Fig. 1 includes into Fig. 6:
The cellular noise filtering device 1 of multi-frequency, 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 with the cellular noise filtering device of multi-frequency is provided with 2 He of smoke machine main body as shown in Figures 1 to 3
The cellular noise filtering device 1 of multi-frequency of multi-frequency noise can be reduced, the cellular noise filtering device 1 of multi-frequency is assemblied in cigarette
Owner's body 2.
The cellular noise filtering device 1 of multi-frequency is distributed with multiple for offsetting the through-hole 11 of multi-frequency noise.Multi-frequency
Cellular noise filtering device 1 is stereochemical structure, and through-hole 11 is through stereochemical structure.
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.Wherein the value of d and b is all multiple.
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 present invention is by adjusting the aperture of different through-holes 11 and logical
The edge in hole 11 and the edge minimum range setting of adjacent through-holes 11 reach the noise reduction of multi-frequency noise.
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.
Denoising device principle of the invention: the cellular noise filtering device 1 of multi-frequency can in limited closed space,
When noise source travels to the cellular noise filtering device 1 of multi-frequency, noise reduction is carried out.Sound wave is usually touching multi-frequency honeycomb
Formula noise filtering device 1 is propagated with opposite direction, so most incidence wave can be interfered with back wave.
The cellular noise filtering device 1 of multi-frequency carries out noise reduction using the principle of resonance, when the side aperture d and through-hole 11
After the edge minimum range b of edge and adjacent through-holes 11 is determined, in space multi-frequency be already provided with the cellular of target frequency
Noise filtering device 1 forms covibration.
Through-hole 11 of the invention forms independent space in the cellular noise filtering device 1 of multi-frequency, it is ensured that more
The cellular noise filtering device 1 of frequency keeps the resonant frequency of itself in sound wave under incidence angles degree, is conducive to specific
The stability of the noise reduction of frequency noise.
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 kitchen ventilator with the cellular noise filtering device of multi-frequency is provided with smoke machine main body 2 and can reduce multi-frequency and makes an uproar
The cellular noise filtering device 1 of the multi-frequency of sound, the cellular noise filtering device 1 of multi-frequency 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 multi-frequency bee
Combination settings of the nido noise filtering device 1 at a distance from smoke machine main body 2 reach the noise reduction of multi-frequency noise.The multi-frequency honeycomb
Formula noise filtering device 1 is able to maintain long-term good noise reduction effect, and the cellular noise filtering device 1 of the multi-frequency, which has, to be easy to beat
Reason, dust, the grease on surface etc. can remove cleaning.The cellular noise filtering device 1 of the multi-frequency has low cost, reliability
High advantage.The material of the cellular noise filtering device 1 of the multi-frequency is anticorrosive, chemical resistance and is hardly damaged.It being capable of needle
Specific noise frequency is reduced.
Embodiment 2.
A kind of kitchen ventilator with the cellular noise filtering device of multi-frequency, as shown in figure 4, other features and 1 phase of embodiment
Together, the difference is that, the through-hole 11 of the present embodiment is bevel edge through-hole 11, the longitudinal section of through-hole 11 and the cellular noise of multi-frequency
The side of filter device 1 is at angle a.
Aperture for multiple cross sections of bevel edge through-hole 11 is actually multiple values, therefore corresponding through-hole 11 is bevel edge
Through-hole 11 also can be used in reducing the multi-frequency noise in 11 space of through-hole.
It should be noted that through-hole 11 of the invention can be bevel edge through-hole 11, the longitudinal section of the through-hole 11 and multi-frequency bee
The side of nido noise filtering device 1 is at angle；Through-hole 11 or rectilinear through-hole 11, the side of corresponding through-hole 11 and multi-frequency bee
The side of nido noise filtering device 1 is vertical or parallel；Or the side of 11 longitudinal section of through-hole is curve；Or through-hole 11
The side of longitudinal section is any one meaning of broken line, or the multiple combinations of this above 4 kinds of modes, and specific embodiment is according to reality
Depending on situation.
Compared with Example 1,11 inner space of through-hole of the present embodiment is also adjusted for eliminating the noise of different frequency, mentions
The high frequency range of noise.
Embodiment 3.
A kind of kitchen ventilator with the cellular noise filtering device of multi-frequency, as shown in figure 5, other features and 1 phase of embodiment
Together, the difference is that, the shape of the through-hole 11 of the present embodiment is hexagon and circular combination.Through-hole 11 is rectilinear through-hole
11, corresponding through-hole 11 while with the cellular noise filtering device 1 of multi-frequency while it is vertical or parallel.
Compared with Example 1, the through-hole 11 of the present embodiment is rectilinear through-hole 11, because rectilinear through-hole 11 is in technique production
Relatively easily.The present embodiment compared with Example 1, increases the diversity of 11 shape of through-hole setting.
Embodiment 4.
A kind of kitchen ventilator with the cellular noise filtering device of multi-frequency, as shown in fig. 6, other features and 1 phase of embodiment
Together, the difference is that, there are gap between the cellular noise filtering device 1 of multi-frequency and the immediate wall surface of smoke machine main body 2,
It is H by the distance definition in gap1。
Denoising device principle of the invention: the cellular noise filtering device 1 of multi-frequency can in limited closed space,
When noise source travels to the cellular noise filtering device 1 of multi-frequency, noise reduction is carried out.Sound wave is usually touching multi-frequency honeycomb
Formula noise filtering device 1 is propagated with opposite direction, so most incidence wave can be interfered with back wave.Characteristic it is fixed away from
From the about a quarter of noise source wavelength away from i.e. H at degree1, the speed of particle reaches highest, because the present invention passes through multi-frequency bee
Nido noise filtering device 1 at a distance from the inner wall of smoke machine main body 2 at a quarter of noise source wavelength is away from degree, energy
Effectively eliminate the noise of the wavelength.
Smoke machine main body 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 enter multi-frequency
The through-hole 11 of cellular noise filtering device 1.Therefore sound-absorbing part 21 of the invention is preferably fiber, PP cotton, polyester fiber, Carbon fiber
Dimension or porous foam.Or sound-absorbing part 21 is porous plate.
The determinant of the resonant frequency of the cellular noise filtering device 1 of multi-frequency of the invention: the aperture of through-hole 11 leads to
The edge in hole 11 and the edge minimum range of adjacent through-holes 11 or the cellular noise filtering device 1 of multi-frequency and smoke machine main body 2
Distance and through-hole 11 whether be independent space inside the cellular noise filtering device 1 of multi-frequency, just can determine that multi-frequency
The resonant frequency of cellular noise filtering device 1 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 5.
A kind of kitchen ventilator with the cellular noise filtering device of multi-frequency, other features are same as Example 1, difference
It is, the cellular noise filtering device 1 of the multi-frequency of the present embodiment is the cellular noise filtering device 1 of ceramic multi-frequency.Multifrequency
The surface of the cellular noise filtering device 1 of rate is provided with the nano coating of oleophobic.
It should be noted that the cellular noise filtering device 1 of multi-frequency of the invention is preferably that multi-frequency is cellular makes an uproar for ceramics
Sound filter device 1, can also be the cellular noise filtering device 1 of carbon multi-frequency, specific embodiment according to the actual situation depending on.
It is 100Hz~8000Hz that the cellular noise filtering device 1 of multi-frequency of the invention, which eliminates noisy frequency range,.
The cellular noise filtering device 1 of the multi-frequency of the present embodiment has durable, oleophobic and elimination noisy frequency range wide
The advantages of.
Embodiment 6.
A kind of design of the kitchen ventilator with the cellular noise filtering device of multi-frequency:
Target frequency 1:8000Hz.
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.
Target frequency 2:800Hz.
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 multi-frequency of the kitchen ventilator is only corresponding with above-mentioned two target frequency
The characteristic of through-hole 11 can effectively eliminate the noise of corresponding frequency.
It should be noted that the present embodiment only lists the design parameter of two target frequencies, table can not only for the present invention
For the noise of two kinds of frequencies, only corresponding different parameter, the present invention can eliminate the noise of multi-frequency, reach wideband frequency drop
It makes an uproar purpose.
Embodiment 7.
A kind of design of the kitchen ventilator with the cellular noise filtering device of multi-frequency:
Target frequency 1:5000Hz.
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.
Target frequency 2:100Hz.
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 111=
50mm。
Therefore the cellular noise filtering device 1 of multi-frequency of the kitchen ventilator is only corresponding with above-mentioned two target frequency
The characteristic of through-hole 11 can effectively eliminate the noise of corresponding frequency.
It should be noted that the present embodiment only lists the design parameter of two target frequencies, table can not only for the present invention
For the noise of two kinds of frequencies, only corresponding different parameter, the present invention can eliminate the noise of multi-frequency, reach wideband frequency drop
It makes an uproar purpose.
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. a kind of kitchen ventilator with the cellular noise filtering device of multi-frequency, it is characterised in that: it is provided with smoke machine main body and can drop
The cellular noise filtering device of the multi-frequency of low multi-frequency noise, the cellular noise filtering device of multi-frequency are assemblied in smoke machine master
Body；
The cellular noise filtering device of multi-frequency is distributed with multiple for offsetting the through-hole of multi-frequency noise；
The cellular noise filtering device of multi-frequency is stereochemical structure, and through-hole is through stereochemical structure.
2. the kitchen ventilator according to claim 1 with the cellular noise filtering device of multi-frequency, it is characterised in that: it is described logical
The aperture in hole is defined as d；
D≤the 30mm.
3. the kitchen ventilator according to claim 2 with the cellular noise filtering device of multi-frequency, it is characterised in that: it is described logical
The edge in hole and the edge minimum range of adjacent through-holes are b, and b is the arbitrary value greater than 0；
The value of the b is multiple.
4. the kitchen ventilator according to claim 3 with the cellular noise filtering device of multi-frequency, it is characterised in that: pass through tune
The cellular noise filtering of edge minimum range or multi-frequency in the aperture, the edge and adjacent through-holes of through-hole of whole difference through-hole fills
It sets the combination settings at a distance from smoke machine main body and reaches multi-frequency noise noise reduction.
5. the kitchen ventilator according to claim 4 with the cellular noise filtering device of multi-frequency, it is characterised in that: it is described logical
Hole is rectilinear through-hole, corresponding through-hole while with the cellular noise filtering device of multi-frequency while it is vertical or parallel；Or
The through-hole is bevel edge through-hole, and the longitudinal section of through-hole and the side of the cellular noise filtering device of multi-frequency are at angle a；Or
The side of the through-hole longitudinal section is curve；Or
The side of the longitudinal section of the through-hole is at least one of broken line.
6. the kitchen ventilator according to claim 4 or 5 with the cellular noise filtering device of multi-frequency, it is characterised in that: institute
The shape for stating through-hole is circle, ellipse, triangle, square, rectangle, pentagon, hexagon, diamond shape or irregular shape
At least one of shape.
7. the kitchen ventilator according to claim 6 with the cellular noise filtering device of multi-frequency, it is characterised in that: the multifrequency
There are gaps between the cellular noise filtering device of rate and the immediate wall surface of smoke machine main body, are H by the distance definition in gap1。
8. the kitchen ventilator according to claim 7 with the cellular noise filtering device of multi-frequency, it is characterised in that: 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. the kitchen ventilator according to claim 8 with the cellular noise filtering device of multi-frequency, it is characterised in that: the sound-absorbing
Portion is fiber, PP cotton, polyester fiber, Carbon fibe or porous foam；Or
The sound-absorbing part is porous plate.
10. the kitchen ventilator according to claim 9 with the cellular noise filtering device of multi-frequency, it is characterised in that: it is described
The cellular noise filtering device of multi-frequency is the cellular noise filtering device of ceramic multi-frequency or the cellular noise of carbon multi-frequency
Filter device；
The surface of the cellular noise filtering device of multi-frequency is provided with the nano coating of oleophobic；
It is 100Hz~8000Hz that the cellular noise filtering device of multi-frequency, which eliminates noisy frequency range,.
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| CN201810772846.5A CN108954436A (en) | 2018-07-14 | 2018-07-14 | A kind of kitchen ventilator with the cellular noise filtering device of multi-frequency |
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| CN201810772846.5A CN108954436A (en) | 2018-07-14 | 2018-07-14 | A kind of kitchen ventilator with the cellular noise filtering device of multi-frequency |
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Application publication date: 20181207 |