CN208794486U - A kind of kitchen ventilator with the cellular noise filtering device of multilayer - Google Patents
A kind of kitchen ventilator with the cellular noise filtering device of multilayer Download PDFInfo
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- CN208794486U CN208794486U CN201821121179.6U CN201821121179U CN208794486U CN 208794486 U CN208794486 U CN 208794486U CN 201821121179 U CN201821121179 U CN 201821121179U CN 208794486 U CN208794486 U CN 208794486U
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Abstract
A kind of kitchen ventilator with the cellular noise filtering device of multilayer is provided with smoke machine main body and can eliminate the cellular noise filtering device of noise, and cellular noise filtering device is assemblied in smoke machine body interior.Cellular noise filtering device is distributed with multiple for eliminating the through-hole of noise.Cellular noise filtering device is provided with multilayer honeycomb boards, and multilayer honeycomb boards are assemblied in smoke machine body interior respectively.The kitchen ventilator with the cellular noise filtering device of multilayer reaches specific unifrequency noise or specific multi-frequency noise noise reduction by adjusting the combination 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 kitchen ventilator has the advantages that low cost, reliability are high, and can be effectively reduced specific unifrequency noise and broadband noise, and noise reduction wide frequency range can reduce the noise of multiple frequencies.
Description
Technical field
The utility model relates to kitchen ventilator field, in particular to a kind of oil smoke with the cellular noise filtering device of multilayer
Machine.
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.Again since the noisy frequency range that kitchen ventilator generates can be 100Hz~8000Hz, it is clear that single-frequency
The passive denoising device of section can not generate good noise reduction effect for kitchen ventilator.
Therefore, in view of the shortcomings of the prior art, providing a kind of kitchen ventilator with the cellular noise filtering device of multilayer to solve
Prior art deficiency is very necessary.
Utility model content
The purpose of this utility model is that providing a kind of cellular noise of band multilayer in place of avoiding the deficiencies in the prior art
The kitchen ventilator of filter device.The kitchen ventilator with the cellular noise filtering device of multilayer can reduce specific unifrequency noise or
Specific multi-frequency noise noise reduction.
The above-mentioned purpose of the utility model is realized by following technical measures:
A kind of kitchen ventilator with the cellular noise filtering device of multilayer is provided, smoke machine main body is provided with and noise can be eliminated
Cellular noise filtering device, cellular noise filtering device is assemblied in smoke machine body interior.
Cellular noise filtering device is distributed with multiple for eliminating the through-hole of noise.
Cellular noise filtering device is provided with multilayer honeycomb boards, and multilayer honeycomb boards are assemblied in smoke machine body interior respectively.
Preferably, the through-hole of above-mentioned every layer of honeycomb boards is completely or partially mutually aligned with the through-hole of adjacent honeycomb boards.
Preferably, the through-hole of above-mentioned every layer of honeycomb boards is completely or partially in mutually stagger to set with the through-hole of adjacent honeycomb boards
It sets.
The utility model by adjusting the aperture of different through-holes, the edge of through-hole and adjacent through-holes edge minimum range or
Combination of the cellular noise filtering device of person at a distance from smoke machine main body reaches specific unifrequency noise or specific multi-frequency is made an uproar
Sound noise reduction.
Preferably, the aperture of above-mentioned through-hole is defined as d, and d≤30mm.
Preferably, the minimum range between the edge of above-mentioned through-hole and the edge of adjacent through-holes is b, and b is appointing greater than 0
Meaning value.
Preferably, the value of above-mentioned d is multiple.
Preferably, the value of above-mentioned b is multiple.
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 are gaps between above-mentioned honeycomb boards and the immediate wall surface of smoke machine main body, by the distance definition in gap
For H1。
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 fiber or porous foam；Or
The sound-absorbing part is porous plate.
Preferably, above-mentioned honeycomb boards are ceramic honeycomb plate or carbon honeycomb plate.
Preferably, the surface of above-mentioned honeycomb boards 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 kitchen ventilator with the cellular noise filtering device of multilayer of the utility model is provided with smoke machine main body and can
The cellular noise filtering device of noise is eliminated, cellular noise filtering device is assemblied in smoke machine body interior.Cellular noise
Filter device is distributed with multiple for eliminating the through-hole of noise.Cellular noise filtering device is provided with multilayer honeycomb boards, multilayer
Honeycomb boards are assemblied in smoke machine body interior respectively.The kitchen ventilator with the cellular noise filtering device of multilayer is logical by adjusting difference
The edge minimum range in the aperture in hole, the edge of through-hole and adjacent through-holes or cellular noise filtering device and smoke machine main body
The combination of distance reaches specific unifrequency noise or specific multi-frequency noise noise reduction.The kitchen ventilator has low cost, reliability
High advantage, and can be effectively reduced specific unifrequency noise and broadband noise, noise reduction wide frequency range can reduce multiple frequencies
The noise of rate.
Detailed description of the invention
The utility model is further described using attached drawing, but the content in attached drawing is not constituted to the utility model
Any restrictions.
Fig. 1 is the cellular noise filtering device perspective structure schematic diagram of embodiment 1.
Fig. 2 is the schematic partial cross-sectional view of Fig. 1.
Fig. 3 is the edge minimum range schematic diagram at the aperture of through-hole and the edge of through-hole and adjacent through-holes in Fig. 1.
Fig. 4 is the cellular noise filtering device perspective structure schematic diagram of embodiment 2.
Fig. 5 is the schematic partial cross-sectional view of Fig. 4.
Fig. 6 is the cellular noise filtering schematic device of embodiment 3.
Fig. 7 is the cellular noise filtering schematic device of embodiment 4.
Fig. 8 is a kind of kitchen ventilator with the cellular noise filtering device of multilayer of embodiment 5.
Fig. 1 includes into Fig. 8:
Honeycomb boards 1, through-hole 11,
Smoke machine main body 2, sound-absorbing part 21.
Specific embodiment
The technical solution of the utility model is described further with the following Examples.
Embodiment 1.
A kind of kitchen ventilator with the cellular noise filtering device of multilayer is provided with smoke machine main body 2 and energy as shown in Figures 1 to 3
The cellular noise filtering device of noise is enough eliminated, cellular noise filtering device is assemblied in inside smoke machine main body 2.
Cellular noise filtering device is distributed with multiple for eliminating the through-hole 11 of noise.Cellular noise filtering device is set
Multilayer honeycomb boards 1 are equipped with, multilayer honeycomb boards 1 are assemblied in respectively inside smoke machine main body 2.The honeycomb boards 1 of specific the present embodiment are set
It is set to two layers, two layers of honeycomb boards 1 is assemblied in smoke machine main body 2.
It should be noted that 1 number of plies of honeycomb boards of the utility model can be two layers, or any just whole greater than 2
Number, specific embodiment according to the actual situation depending on.
The through-hole 11 of every layer of honeycomb boards 1 of the present embodiment and the through-hole 11 of adjacent honeycomb boards 1 are all mutually aligned.By
The effect that many experiments data prove the through-hole 11 of every layer of honeycomb boards 1 and the through-hole 11 of adjacent honeycomb boards 1 is all mutually aligned compared with
It is good.
It should be noted that the whole phases of through-hole 11 of the through-hole 11 of every layer of honeycomb boards 1 of the utility model and adjacent honeycomb boards 1
It being mutually aligned to preferred, or the through-hole 11 of every layer of honeycomb boards 1 and 11 part of through-hole of adjacent honeycomb boards 1 are mutually aligned,
Or the through-hole 11 of every layer of honeycomb boards 1 and 11 all or part of through-hole of adjacent honeycomb boards 1 are in mutually stagger setting, specifically
Embodiment according to the actual situation depending on.
The shape of the utility model through-hole 11 is circle, ellipse, triangle, square, rectangle, pentagon, six sides
At least one of shape, diamond 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.
The utility model is minimum by adjusting the edge in the aperture of different through-holes 11, the edge of through-hole 11 and adjacent through-holes 11
The combination of distance or cellular noise filtering device at a distance from smoke machine main body 2 reaches specific unifrequency noise or specific
Multi-frequency noise noise reduction.
The aperture of the through-hole 11 of the utility model is defined as d, and d≤30mm；Wherein the value of d is 1.The utility model
The edge of through-hole 11 and the edge minimum range of adjacent through-holes 11 are b, and b is the arbitrary value greater than 0, and wherein the value of b is 1.This
The kitchen ventilator of embodiment is the kitchen ventilator for eliminating unifrequency noise.
In the constant situation of aperture d, the smaller elimination of value of the edge minimum range b at the edge and adjacent through-holes 11 of through-hole 11
Target noise frequency it is bigger.Under the edge of through-hole 11 and the constant situation of edge minimum range b of adjacent through-holes 11, aperture
The smaller target noise frequency to be eliminated of the value of d is with regard to smaller.It should be noted that when the value of value and d for b is unique, it can be with
To specific unifrequency noise noise reduction.But specific single-frequency can be combined into according to matching for the two value when b and d is multiple and different value
Rate noise or specific multi-frequency noise noise reduction.The number of the value of the value and d of b, size according to the actual situation depending on.
The denoising device principle of the utility model is such that travel to honeycomb in noise source in limited closed space
When formula noise filtering device, noise reduction is carried out.Sound wave is usually propagated with opposite direction touching cellular noise filtering device, so
Most incidence wave can be interfered with back wave.In specific distance, about a quarter of noise source wavelength away from degree at,
The speed of particle reaches highest.
Cellular noise filtering device 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, in space specific unifrequency be already provided with the cellular of target frequency
Noise filtering device forms covibration.
The through-hole 11 of the utility model forms independent space in cellular noise filtering device, it is ensured that cellular
Noise filtering device 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.
A kind of kitchen ventilator with the cellular noise filtering device of multilayer of the utility model is by adjusting different through-holes 11
Aperture, the edge of through-hole 11 and the edge minimum range of adjacent through-holes 11 or cellular noise filtering device and smoke machine main body 2
The combination of distance reach specific unifrequency noise or specific multi-frequency noise noise reduction.The kitchen ventilator has inexpensive, reliable
High advantage is spent, and can be effectively reduced specific unifrequency noise and broadband noise.
Embodiment 2.
A kind of kitchen ventilator with the cellular noise filtering device of multilayer, as shown in Fig. 4 to 5, other features and 1 phase of embodiment
Together, the difference is that, the through-hole 11 of the through-hole 11 of every layer of honeycomb boards 111 of the present embodiment and adjacent honeycomb boards 1 is all in phase
Mutually it is arranged in a staggered manner.
Compared with Example 1, the surface area of the cellular noise filtering device of the present embodiment is bigger, can guarantee bigger model
Exclosure reduces noise.
Embodiment 3.
A kind of kitchen ventilator with the cellular noise filtering device of multilayer, as shown in fig. 6, other features are same as Example 1,
The difference is that the value of the through-hole 11d and b of the present embodiment are 2.The kitchen ventilator of the present embodiment is to eliminate multi-frequency noise
Kitchen ventilator
Compared with Example 1, the value of the d and b of this implementation are two, the combination of the two can Cheng Erwei eliminate multi-frequency and make an uproar
Sound.11 inner space of through-hole of the present embodiment is used to adjust the noise for eliminating different frequency, improves the frequency range of noise.
Embodiment 4.
A kind of kitchen ventilator with the cellular noise filtering device of multilayer, as shown in fig. 7, other features are same as Example 3,
The difference is that the shape of the through-hole 11 of the present embodiment is hexagon and circular combination.
The circular through hole 11 of the present embodiment is upper relatively easy in technique production, and because of the interference of not no corner angle, with embodiment 1
It is optimal compared to noise reduction effect.The present embodiment increases the diversity of 11 shape of through-hole setting compared with embodiment 1.
Embodiment 5.
A kind of kitchen ventilator with the cellular noise filtering device of multilayer, as shown in figure 8, other features are same as Example 1,
The difference is that there are gap between cellular noise filtering device and the immediate wall surface of smoke machine main body 2, by gap away from
From being defined as H1。
The denoising device principle of the utility model: cellular noise filtering device can in limited closed space,
When noise source travels to cellular noise filtering device, noise reduction is carried out.Sound wave is usually touching cellular noise filtering device
It is propagated with opposite direction, 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 utility model passes through cellular noise filtering device
With at a quarter of noise source wavelength is away from degree, the wavelength can be effectively eliminated at a distance from the inner wall of smoke machine main body 2
Noise.
Smoke machine main body 2 is provided with sound-absorbing part 21, and sound-absorbing part assembles smoke machine main body 2.The thickness of sound-absorbing part 21 is defined as H2,
And H2≤0.6H1.The gap that sound-absorbing part 21 is assemblied in.
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.Therefore the sound-absorbing part 21 of the utility model is preferably fiber, PP cotton, polyester fiber, carbon fiber
Or porous foam.Or sound-absorbing part 21 is porous plate.
The determinant of the resonant frequency of the cellular noise filtering device of the utility model: the aperture of through-hole 11, through-hole
11 edge is at a distance from the edge minimum range of adjacent through-holes 11 or cellular noise filtering device and smoke machine main body 2 and logical
Whether hole 11 is independent space inside cellular noise filtering device, just can determine that the resonance of cellular noise filtering device
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 6.
A kind of kitchen ventilator with the cellular noise filtering device of multilayer, other features are same as Example 1, difference
It is, the honeycomb boards 1 of the present embodiment are ceramic honeycomb plate 1.The surface of honeycomb boards 1 is provided with the nano coating of oleophobic.
It should be noted that the honeycomb boards 1 of the utility model are preferably ceramic honeycomb plate 1, it can also be carbon honeycomb plate 1, specifically
Embodiment according to the actual situation depending on.
It is 100Hz~8000Hz that the cellular noise filtering device of the utility model, which eliminates noisy frequency range,.
The cellular noise filtering device of the present embodiment has the advantages that durable, oleophobic and elimination noisy frequency range are wide.
Embodiment 7.
A kind of design of the kitchen ventilator with the cellular noise filtering device of multilayer:
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, through-hole 11 are rectilinear through-hole 11.
It should be noted that the present embodiment only lists the design parameter for the single goal frequency that frequency is 8000Hz, not table
The noise of this frequency can only be directed to for the utility model, only corresponding different parameter, the utility model can be eliminated specifically
Unifrequent noise.
Embodiment 8.
A kind of design of the kitchen ventilator with the cellular noise filtering device of multilayer:
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 111=
50mm, through-hole 11 are rectilinear through-hole 11.
It should be noted that the present embodiment only lists the design parameter for the single goal frequency that frequency is 100Hz, not table generation
The utility model can only be directed to the noise of this frequency, and only corresponding different parameter, the utility model can eliminate specific list
The noise of frequency.
Embodiment 9.
A kind of design of the kitchen ventilator with the cellular noise filtering device of multilayer:
Target frequency 1:800Hz.
The aperture d=4mm of through-hole 11, the edge of through-hole 11 and the edge minimum range b=18mm, H of adjacent through-holes 111=
20mm, through-hole 11 are rectilinear through-hole 11.
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, through-hole 11 are rectilinear through-hole 11.
The present embodiment lists two different d and b combination, can produce identical target frequency.
It should be noted that the present embodiment only lists the design parameter of 800Hz target frequency, the utility model can also be with needle
To different unifrequent noises, target frequency is obtained by different parameter regulations, identical target frequency can also be joined by others
Number adjusts combination and obtains identical effect.
Embodiment 10.
A kind of design of the kitchen ventilator with the cellular noise filtering device of multilayer:
Target frequency 1:7000Hz.
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 111
=2.6mm, 11 bevel edge through-hole 11 of through-hole.
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, 11 bevel edge through-hole 11 of through-hole.
Therefore the kitchen ventilator only can be effectively eliminated in the characteristic with the corresponding through-hole 11 of above-mentioned two target frequency
The noise of corresponding frequency.
It should be noted that the present embodiment only lists the design parameter of two target frequencies, table is not for the utility model
It can only be directed to the noise of two kinds of frequencies, only corresponding different parameter, the utility model can eliminate the noise of multi-frequency, reach wide
Band frequency noise reduction purpose.
Finally it should be noted that above embodiments are only to illustrate the technical solution of the utility model rather than to this is practical
The limitation of novel protected range, although being explained in detail referring to preferred embodiment to the utility model, the common skill of this field
Art personnel, which should be appreciated that, can be modified or replaced equivalently technical solutions of the utility model, practical new without departing from this
The spirit and scope of type technical solution.
Claims (10)
1. a kind of kitchen ventilator with the cellular noise filtering device of multilayer, it is characterised in that: it is provided with smoke machine main body and can disappear
Except the cellular noise filtering device of noise, cellular noise filtering device is assemblied in smoke machine body interior；
The cellular noise filtering device is distributed with multiple for eliminating the through-hole of noise；
The cellular noise filtering device is provided with multilayer honeycomb boards, and multilayer honeycomb boards are assemblied in smoke machine body interior respectively.
2. the kitchen ventilator according to claim 1 with the cellular noise filtering device of multilayer, it is characterised in that: it is every layer described
The through-hole of honeycomb boards and the through-hole of adjacent honeycomb boards are completely or partially mutually aligned.
3. the kitchen ventilator according to claim 1 with the cellular noise filtering device of multilayer, it is characterised in that: it is every layer described
The through-hole of the through-hole of honeycomb boards and adjacent honeycomb boards is completely or partially in mutually stagger setting.
4. the kitchen ventilator according to claim 2 or 3 with the cellular noise filtering device of multilayer, it is characterised in that: pass through
Adjust the aperture of different through-holes, the edge of through-hole and adjacent through-holes edge minimum range or cellular noise filtering device with
The combination of the distance of smoke machine main body reaches specific unifrequency noise or specific multi-frequency noise noise reduction.
5. the kitchen ventilator according to claim 4 with the cellular noise filtering device of multilayer, it is characterised in that: the through-hole
Aperture be defined as d, and d≤30mm.
6. the kitchen ventilator according to claim 5 with the cellular noise filtering device of multilayer, it is characterised in that: the through-hole
Edge and adjacent through-holes edge between minimum range be b, b is arbitrary value greater than 0.
7. the kitchen ventilator according to claim 6 with the cellular noise filtering device of multilayer, it is characterised in that: the d's
Value is multiple；
The value of the b is multiple.
8. the kitchen ventilator according to claim 6 with the cellular noise filtering device of multilayer, it is characterised in that: the through-hole
Shape be at least one of circle, ellipse, triangle, square, rectangle, pentagon, hexagon or diamond shape.
9. the kitchen ventilator according to claim 8 with the cellular noise filtering device of multilayer, it is characterised in that: the honeycomb
There are gaps between plate and the immediate wall surface of smoke machine main body, are H by the distance definition in gap1；
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；
The sound-absorbing part is fiber, PP cotton, polyester fiber, carbon fiber 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 multilayer, it is characterised in that: the bee
Nest plate is ceramic honeycomb plate or carbon honeycomb plate；
The surface of the honeycomb boards 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108731072A (en) * | 2018-07-14 | 2018-11-02 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator with the cellular noise filtering device of multilayer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108731072A (en) * | 2018-07-14 | 2018-11-02 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator with the cellular noise filtering device of multilayer |
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