CN208794487U - A kind of kitchen ventilator of the multi-frequency noise filtering of the multiple panel zones of band - Google Patents
A kind of kitchen ventilator of the multi-frequency noise filtering of the multiple panel zones of band Download PDFInfo
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- CN208794487U CN208794487U CN201821121222.9U CN201821121222U CN208794487U CN 208794487 U CN208794487 U CN 208794487U CN 201821121222 U CN201821121222 U CN 201821121222U CN 208794487 U CN208794487 U CN 208794487U
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Abstract
A kind of kitchen ventilator of the multi-frequency noise filtering of the multiple panel zones of band, is equipped with smoke machine main body and noise filtering device, the noise filtering device that can eliminate multi-frequency noise is assemblied in smoke machine main body；The noise filtering device is set as being distributed with multiple for eliminating the panel of the through-hole of multi-frequency.The kitchen ventilator can be distributed by adjusting the apertures of different through-holes, the edge of through-hole and edge minimum range, the via regions of panel of adjacent through-holes or noise filtering device and smoke machine main body at a distance from reach multi-frequency noise noise reduction.The 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 noise filtering device has the advantages that low cost, reliability are high.The material of the noise filtering device is anticorrosive, chemical resistance and is hardly damaged.It can be effectively reduced narrow frequency noise and broadband noise, 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 the multi-frequency noise filtering of a kind of multiple panel zones of band
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 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 of the multi-frequency noise filtering of multiple panel zones of band
It is very necessary to solve prior art deficiency.
Utility model content
The purpose of this utility model is that avoiding in place of the deficiencies in the prior art and providing a kind of multiple panel zones of band
The kitchen ventilator of multi-frequency noise filtering.The kitchen ventilator of the multi-frequency noise filtering with multiple panel zones have can eliminate multifrequency
The advantages of rate noise.
The above-mentioned purpose of the utility model is realized by following technical measures:
A kind of kitchen ventilator of the multi-frequency noise filtering of multiple panel zones of band is provided, smoke machine main body is provided with and can be disappeared
Except the noise filtering device of multi-frequency noise, noise filtering device is assemblied in smoke machine main body.
The noise filtering device is set as being distributed with multiple for eliminating the panel of the through-hole of multi-frequency noise.
The panel is provided with multiple corresponding regions for eliminating one or more target frequency noises, and multiple through-holes press region
It is distributed in corresponding positions of panels.
Preferably, above-mentioned zone is bilateral symmetry formula region, formula region symmetrical above and below or asymmetric formula region.
It is another preferred, above-mentioned zone be divergence expression region, spiral region, wave region, winding type region or
Remove the random mode region of above-mentioned zone.
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, and the side of corresponding through-hole and the width in panel section are parallel；Or
The through-hole is bevel edge through-hole, wide at included angle A, and A≤20 ° in the bevel edge of corresponding through-hole and panel section.
Preferably, the aperture of above-mentioned through-hole is defined as d, and d≤30mm.
It is further preferred that the value of above-mentioned d is multiple.
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.
It is further preferred that the value of above-mentioned b is multiple.
The utility model by adjusting the aperture of different through-holes, the edge of through-hole and adjacent through-holes edge minimum range,
The via regions of panel are distributed or noise filtering device reaches multi-frequency noise noise reduction at a distance from smoke machine main body.
Preferably, there are gaps between above-mentioned panel and the immediate wall surface of smoke machine main body, are by the distance definition in gap
H1。
Preferably, above-mentioned noise filtering device is additionally provided with sound-absorbing part, and sound-absorbing part assembles smoke machine main body.
Preferably, the thickness of above-mentioned sound-absorbing part is defined as H2, and H2≤0.6H1。
Preferably, above-mentioned sound-absorbing part is fixed on the outer surface of panel；Or
The sound-absorbing part is fixed on the surface of panel Yu the nearest wall surface of smoke machine main body；Or
The sound-absorbing part is fixed between panel and the nearest wall surface gap of smoke machine main body.
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 panel is metal decking, plastic front board or alloy panel.
Preferably, above-mentioned panel is connected with reinforced structure.
Preferably, above-mentioned reinforced structure is convex closure, recessed packet or reinforcing rib.
Preferably, it is 100Hz~8000Hz that above-mentioned noise filtering device, which eliminates noisy frequency range,.
A kind of kitchen ventilator of the multi-frequency noise filtering of the multiple panel zones of band of the utility model, is provided with smoke machine main body
With noise filtering device, the noise filtering device that can eliminate multi-frequency noise is assemblied in smoke machine main body；The noise filtering dress
Install the panel for being set to and multiple through-holes for being used to eliminate multi-frequency being distributed with.Denoising device in the prior art, can only be for single
One target frequency noise reduction.A kind of kitchen ventilator of the multi-frequency noise filtering of the multiple panel zones of band of the utility model can lead to
Cross the edge in the aperture, through-hole that adjust different through-holes and the edge minimum range of adjacent through-holes, the distribution of the via regions of panel or
Person's noise filtering device reaches multi-frequency noise noise reduction at a distance from smoke machine main body.The noise filtering device is able to maintain long-term good
Noise reduction effect, the noise filtering device have is easy to arrange, dust, the grease on surface etc. can remove cleaning.The noise mistake
Filter device has the advantages that low cost, reliability are high.The material of noise filtering device rapid wear for anticorrosive, chemical resistance and not
It is bad.It can be effectively reduced narrow frequency noise and broadband noise, noise reduction wide frequency range can reduce the noise of multiple frequencies.
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 panel construction schematic diagram of the utility model embodiment 1.
Fig. 2 is through-hole different zones distribution mode, and the B in A and Fig. 2 in Fig. 2 is bilateral symmetry formula region, the C in Fig. 2
It is formula region symmetrical above and below with the D in Fig. 2, the F in E and Fig. 2 in Fig. 2 is asymmetric formula region.
Fig. 3 is the panel construction schematic diagram of the utility model embodiment 2.
Fig. 4 is through-hole different zones distribution mode, and the B in A and Fig. 4 in Fig. 4 is divergence expression region, C and figure in Fig. 4
D in 4 is spiral region, and the F in E and Fig. 4 in Fig. 4 is wave region, and the H in G and Fig. 4 in Fig. 4 is winding type
Region, the J in I and Figure 10 in Fig. 4 are random mode region.
Fig. 5 is the schematic cross-section of the rectilinear through-hole of embodiment 3.
Fig. 6 is the schematic cross-section of bevel edge through-hole.
Fig. 7 is the aperture schematic diagram of the through-hole of embodiment 4.
Fig. 8 is the edge of the through-hole of embodiment 3 and the edge minimum range schematic diagram of adjacent through-holes.
Fig. 9 is a kind of kitchen ventilator schematic diagram of the multi-frequency noise filtering of the multiple panel zones of band of embodiment 5.
Figure 10 is the panel schematic diagram of embodiment 6.
Figure 11 is the panel construction schematic diagram of the utility model embodiment 7.
Fig. 1 includes into Figure 11:
Noise filtering device 1,
Panel 11, through-hole 111, reinforced structure 112,
Sound-absorbing part 12,
Smoke machine main body 2.
Specific embodiment
The technical solution of the utility model is described further with the following Examples.
Embodiment 1.
A kind of kitchen ventilator of the multi-frequency noise filtering in multiple 11 regions of panel of band is provided with smoke machine master as shown in Fig. 1
Body 2 and noise filtering device 1, the noise filtering device 1 that can eliminate multi-frequency noise are assemblied in smoke machine main body 2.Noise filtering
Device 1 is set as being distributed with multiple for eliminating the panel 11 of the through-hole 111 of multi-frequency noise.
Panel 11 is provided with multiple corresponding regions for eliminating one or more target frequency noises, and multiple through-holes 111 press area
Domain is distributed in corresponding 11 position of panel.
The through-hole 111 of the panel 11 of the present embodiment is to be conducive to be configured institute by region by the effect that multiple regions are distributed
The frequency for the target noise for needing to eliminate.
The utility model panel 11 is provided with multiple regions, and multiple through-holes 111 are by area distribution in corresponding panel 11
It sets.The region of the utility model can be divided into bilateral symmetry formula region, formula region symmetrical above and below or asymmetric formula region.Specifically
, the through-hole 111 of the present embodiment panel 11 is by bilateral symmetry formula region a-quadrant as shown in figure 1, formula region such as Fig. 1 symmetrical above and below
In B area and asymmetric formula region various forms of area distributions in three kinds of the region C and D as shown in figure 1 in panel 11.
The bilateral symmetry formula region of the present embodiment, shown in A as shown in figure 1.It should be noted that the left and right in the utility model
Symmetrical region is not limited to the region that the B in the A or Fig. 2 in A, Fig. 2 in Fig. 1 is these three bilateral symmetry formula modes,
The region of any other bilateral symmetry formula mode also meets the requirement in bilateral symmetry formula region in the utility model, also practical at this
In novel protection scope.
The formula region symmetrical above and below of the present embodiment, shown in B as shown in figure 1.It should be noted that upper and lower in the utility model
Symmetrical region is not limited to these three the formula mode symmetrical above and below regions the D in the C or Fig. 2 in B, Fig. 2 in Fig. 1, other
The region of any formula mode symmetrical above and below also meets the requirement in the utility model formula region symmetrical above and below, also in the utility model
In protection scope.
The asymmetric formula region of the present embodiment, shown in the D in C and Fig. 1 as shown in figure 1.It should be noted that the utility model
In asymmetric formula region be not limited to the E in D, Fig. 2 in C, Fig. 1 in Fig. 1 or F in Fig. 2 these four are asymmetric
The region in the region of formula mode, any other asymmetry formula mode also meets the requirement in the utility model asymmetry formula region,
It is within the protection scope of the present utility model.
It should be noted that the through-hole 111 of the panel 11 of the utility model is not limited to the as shown in Figure 1 of the present embodiment
The distribution mode in bilateral symmetry formula region, formula region symmetrical above and below and asymmetric formula region, or bilateral symmetry formula region,
The multiple arrangements of any one in formula region symmetrical above and below or asymmetric formula region, can also more than two kinds of regions one
Arrangement, or multiple arrangements more than two kinds of regions, depending on specific performance is with actual conditions.
The shape of the utility model through-hole 111 is circle, ellipse, triangle, square, rectangle, pentagon, six sides
At least one of shape, diamond shape or irregular shape.The present embodiment through-hole 111 it is conveniently of circular shape because round exist
Technique production is upper relatively easy, and because of the interference of not no corner angle, noise reduction effect is optimal.
It should be noted that the shape of through-hole 111 may be ellipse, triangle, square, rectangle, pentagon, six
Side shape, diamond shape or irregular shape, or the combination of the shape of above-mentioned a variety of through-holes 111, specific embodiment with
Depending on actual conditions.
The denoising device principle of the utility model be such that noise filtering device 1 can in limited closed space,
When noise source travels to noise filtering device 1, noise reduction is carried out.Sound wave is usually touching noise filtering device 1 with opposite direction
It propagates, so most incidence wave can be interfered with back wave.
Noise filtering device 1 be using resonance principle carry out noise reduction, in space specific noise frequency be set
The noise filtering device 1 of target frequency forms covibration.
When resonance occurs, the sound wave of oscillation can intensely pierce into out through-hole 111, the sound energy of noise back and forth in air
It is converted to friction loss in the process, achievees the effect that eliminate target frequency noise.
The noise filtering device 1 is easy to arrange, while the dust on 1 surface of noise filtering device, grease can be by removing
It removes.The noise filtering device 1 has the advantages that low cost and reliability are high.The material of the noise filtering device 1 is anticorrosive
And the advantages of chemical resistance, it is hardly damaged.The noise filtering device 1 can be effectively reduced narrow frequency noise and broadband noise, noise reduction
Frequency range is big, while can reduce the noise of multiple frequencies.
Embodiment 2.
A kind of kitchen ventilator of the multi-frequency noise filtering in multiple 11 regions of panel of band, as shown in figure 3, other features and implementation
Example 1 is identical, the difference is that, the region of the present embodiment can be divided into divergence expression region, spiral region, wave region,
Winding type region or the random mode region for removing above-mentioned zone.
The region of the present embodiment can be divided into two spiral regions, a divergence expression region and a random mode region.
Specifically, the B area in A and Fig. 3 in the spiral region of through-hole 111 of the present embodiment panel 11 such as Fig. 3, divergence expression region is such as
Tri- kinds of various forms of area distributions of C in the region D and random mode region such as Fig. 3 in Fig. 3 are in panel 11.
The divergence expression region of the present embodiment, as shown in the D in Fig. 3.It should be noted that the divergence expression area in the utility model
Domain is not limited to these three divergence expression regions of the B in the A or Fig. 4 in D, Fig. 4 in Fig. 3, any other divergence expression mode
Region also complies with the requirement in the utility model divergence expression region, also within the protection scope of the present utility model.
The spiral region of the present embodiment, as shown in the B in the A and Fig. 3 in Fig. 3, it should be noted that, in the utility model
Spiral region be not limited to these four spiral areas of the C in B, Fig. 4 in A, Fig. 3 in Fig. 3 or D in Fig. 4
Domain, any other spiraling manner region also complies with the requirement of the utility model, also within the protection scope of the present utility model.
The random mode region of the present embodiment, as shown in the C in Fig. 3, the random mode region in the utility model is not limited to
These three random mode regions of the J in the I or Fig. 4 in C, Fig. 4 in Fig. 3, any other random mode mode region also complies with
The requirement of the utility model, it is also within the protection scope of the present utility model.
Wave region in the utility model is not limited to both wave areas of the F in the E and Fig. 4 in Fig. 4
Domain, any other wave mode region also complies with the requirement of the utility model, also within the protection scope of the present utility model.
Winding type region in the utility model is not limited to both winding type sides of the H in the G and Fig. 4 in Fig. 4
Formula, any other winding type mode region also complies with the requirement of the utility model, also within the protection scope of the present utility model.
It should be noted that the through-hole 111 of the panel 11 of the utility model is not limited to the as shown in Figure 3 of the present embodiment
The distribution mode in divergence expression region, random mode region and spiral region, or divergence expression region, spiral region, wave
Unrestrained formula region, winding type region remove multiple arrangements of any one in the random mode region of above-mentioned zone, can also be with
A more than two kinds of regions arrangement, or multiple arrangement specific embodiments more than two kinds of regions can be according to reality
Depending on the situation of border.
The present embodiment compared with Example 1, increases through-hole 111 in the diversity in 11 region of panel.
Embodiment 3.
A kind of kitchen ventilator of the multi-frequency noise filtering in multiple 11 regions of panel of band, as shown in Fig. 5, other characteristics and reality
Apply that example 1 is identical, the difference is that: the through-hole 111 of the present embodiment is preferably rectilinear through-hole 111, the side and face of corresponding through-hole 111
The width in 11 section of plate is parallel, as shown in Figure 6.
It should be noted that the through-hole 111 of the utility model or bevel edge through-hole 111, the bevel edge of corresponding through-hole 111 with
Wide at included angle A, and A≤20 ° in 11 section of panel, as shown in Figure 4.May be combinations of the above, specific embodiment with
Depending on actual conditions.
Noise filtering can be improved in the diversity choice of the shape of the distribution mode and through-hole 111 of the through-hole 111 of the present embodiment
The flexibility ratio that device 1 designs.
Embodiment 4.
A kind of kitchen ventilator of the multi-frequency noise filtering in multiple 11 regions of panel of band, as shown in Fig. 7 and 8, other characteristics with
Embodiment 1 is identical, the difference is that: the aperture of the through-hole 111 of the present embodiment is defined as d, and d≤30mm.The side of through-hole 111
The edge minimum range of edge and adjacent through-holes 111 is b, and b is the arbitrary value greater than 0.The value of the d and b of the present embodiment are all more
It is a.
The utility model is in the constant situation of aperture d, the edge of through-hole 111 and the edge minimum range of adjacent through-holes 111
The target noise frequency of the smaller elimination of the value of b is bigger.In the edge of through-hole 111 and the edge minimum range b of adjacent through-holes 111
In constant situation, the smaller target noise frequency to be eliminated of the value of aperture d is with regard to smaller.
The noise filtering device 1 of the utility model is to carry out noise reduction using the principle of resonance, when aperture d and through-hole 111
Edge and adjacent through-holes 111 edge minimum range b determine after, noise filtering device 1 can make specific noise frequency in space
With the target frequency of noise filtering device 1, covibration is formed.When resonance occurs, the sound wave of oscillation in air can be fierce
Ground pierces into out through-hole 111 back and forth, and the sound of noise can be converted to friction loss in the process, reaches elimination target frequency and makes an uproar
Sound.
A kind of kitchen ventilator of the multi-frequency noise filtering in multiple 11 regions of panel of band of the utility model can be by adjusting
111st area of through-hole of the edge minimum range of the aperture of different through-holes 111 and the edge of through-hole 111 and adjacent through-holes 111, panel 11
Domain distribution or noise filtering device 1 achieve the purpose that the noise for reducing different target frequency at a distance from smoke machine main body 2.
The noise filtering device 1 is easy to arrange, while the dust on 1 surface of noise filtering device, grease can be by removing
It removes.The noise filtering device 1 has the advantages that low cost and reliability are high.The material of the noise filtering device 1 is anticorrosive
And the advantages of chemical resistance, it is hardly damaged.The noise filtering device 1 can be effectively reduced narrow frequency noise and broadband noise, noise reduction
Frequency range is big, while can reduce the noise of multiple frequencies.
Embodiment 5.
A kind of kitchen ventilator of the multi-frequency noise filtering in multiple 11 regions of panel of band, as shown in figure 9, other features and implementation
Example 1 is identical, the difference is that, there are gaps between panel 11 and the immediate wall surface of smoke machine main body 2, and the distance in gap is determined
Justice is H1.Noise filtering device 1 is additionally provided with sound-absorbing part 12, and sound-absorbing part assembles smoke machine main body 2.The thickness of sound-absorbing part 12 defines
For H2, and H2≤0.6H1。
The sound-absorbing part 12 of the present embodiment is fixed on the outer surface of panel 11.It should be noted that the sound-absorbing part 12 of the utility model
Panel 11 and smoke machine main body 2 are fixed in the surface or sound-absorbing part 12 that panel 11 and the nearest wall surface of smoke machine main body 2 can be fixed on
Between nearest wall surface gap, specific embodiment according to the actual situation depending on.
Sound wave is usually propagated with opposite direction touching noise filtering device 1, so most incidence wave meeting and reflection
Wave interferes.So most incidence wave can be interfered with back wave.It is H in specific distance1, about noise source wavelength
A quarter away from degree at, the speed of particle reaches highest, because the utility model passes through noise filter and smoke machine main body 2
Inner wall distance noise source wavelength a quarter away from degree at, the noise of the wavelength can be effectively eliminated, therefore right
Panel 11 has difference of height, is adapted to eliminate the noise source of different wave length, reaches multi-frequency noise noise reduction.
The density and material of sound-absorbing part 12 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 noise mistake
Filter the hole of device 1.
Therefore the sound-absorbing part 12 of the utility model is preferably fiber, PP cotton, polyester fiber, carbon fiber or porous foam.
Or sound-absorbing part 12 is porous plate.
The present embodiment increases sound-absorbing part 12 compared with embodiment 1, and the setting of sound-absorbing part 12 can increase the consume of friction, enhancing drop
It makes an uproar effect.
Embodiment 6.
A kind of kitchen ventilator of the multi-frequency noise filtering in multiple 11 regions of panel of band, as shown in Figure 10, other features and reality
It is identical to apply example 1, the difference is that, the panel 11 of the present embodiment is specially metal decking 11.Noise filtering device 1 eliminates noise
Frequency range is 100Hz~8000Hz it should be noted that the panel 11 of the utility model may be plastic front board 11 or close
Golden panel 11, depending on specific embodiment is with actual conditions.
The panel 11 of the present embodiment is connected with reinforced structure 112.Specific reinforced structure 112 is reinforcing rib.It needs
It is bright, the reinforced structure 112 or convex closure or recessed packet of the utility model, or a variety of any combination, specifically
Embodiment with actual conditions depending on.
Compared with Example 1, the more rigid of panel 11 is low resistance structure to the present embodiment.Low resistance structure can make into
Ejected wave and back wave have out of phase under the specific distance with reflecting surface, so that the sound wave of noise can cancel out each other, from
And reduce the intensity of noise.The panel 11 of the metal of the present embodiment has the advantages that high temperature resistant, durable.
Embodiment 7.
A kind of kitchen ventilator of the multi-frequency noise filtering in multiple 11 regions of panel of band, as shown in Figure 11, other features and reality
It is identical to apply example 1, the difference is that, the shape of the through-hole 111 of the present embodiment is ellipse, triangle, square and irregularly
The combination of shape.The area distribution that above-mentioned through-hole 111 is pressed in panel 11, the form in region have bilateral symmetry formula region, up and down
Symmetrical region and asymmetric formula region.A-quadrant in Figure 11 is region symmetrical above and below, and the region in Figure 11 is bilateral symmetry area
Domain, the region D in the region C and Figure 11 in Figure 11 are asymmetric region.
Each region of the present embodiment has multiple d and b values, therefore each region correspondence of the present embodiment can disappear
Except the noise of multiple frequencies, compared with Example 1, the shape of the through-hole 111 of the present embodiment is more diversified for the present embodiment, can improve
The flexibility that through-hole 111 is distributed in panel 11, the more sharp elimination for carrying out multi-frequency noise.
Embodiment 8.
A kind of design of the kitchen ventilator of the multi-frequency noise filtering in multiple 11 regions of panel of band:
Target frequency 1:7000Hz.
Region 1: the aperture d=10mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b of adjacent through-holes 111
=23mm, H1=2.6mm, panel 11 with a thickness of 10mm.
Target frequency 2:800Hz.
Region 2: the aperture d=5mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b=of adjacent through-holes 111
23mm,H1=20mm, panel 11 with a thickness of 10mm.
Therefore the noise filtering device 1 of the kitchen ventilator is only in the spy with the corresponding through-hole 111 of above-mentioned two 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 two target frequencies and corresponding two regions, not
Table can only be directed to the noise of two kinds of frequencies for the utility model, and only corresponding different parameter, the utility model can eliminate multifrequency
The noise of rate reaches wideband frequency noise reduction purpose.
Embodiment 9.
A kind of design of the kitchen ventilator of the multi-frequency noise filtering in multiple 11 regions of panel of band:
Target frequency 1:8000Hz.
Region 1: the aperture d=10mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b of adjacent through-holes 111
=23mm, H1=2.5mm, panel 11 with a thickness of 10mm.
Target frequency 2:100Hz.
Region 2: the aperture d=2mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b=of adjacent through-holes 111
23mm,H1=50mm, panel 11 with a thickness of 10mm.
Therefore the noise filtering device 1 of the kitchen ventilator is only in the spy with the corresponding through-hole 111 of above-mentioned two 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 two target frequencies and corresponding two regions, not
Table can only be directed to the noise of two kinds of frequencies for the utility model, and only corresponding different parameter, the utility model can eliminate multifrequency
The noise of rate reaches wideband 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 of the multi-frequency noise filtering of the multiple panel zones of band, it is characterised in that: be provided with smoke machine main body and
The noise filtering device of multi-frequency noise can be eliminated, noise filtering device is assemblied in smoke machine main body；
The noise filtering device is set as being distributed with multiple for eliminating the panel of the through-hole of multi-frequency noise；
The panel is provided with multiple corresponding regions for eliminating one or more target frequency noises, and multiple through-holes press area distribution
In corresponding positions of panels.
2. the kitchen ventilator of the multi-frequency noise filtering of the multiple panel zones of band according to claim 1, it is characterised in that: institute
Stating region is bilateral symmetry formula region, formula region symmetrical above and below or asymmetric formula region.
3. the kitchen ventilator of the multi-frequency noise filtering of the multiple panel zones of band according to claim 1, it is characterised in that: institute
Stating region is divergence expression region, spiral region, wave region, winding type region or the random mode area for removing above-mentioned zone
Domain.
4. the kitchen ventilator of the multi-frequency noise filtering of the multiple panel zones of band according to claim 2 or 3, feature exist
In: the shape of the through-hole be circle, in ellipse, triangle, square, rectangle, pentagon, hexagon or diamond shape
It is at least one.
5. the kitchen ventilator of the multi-frequency noise filtering of the multiple panel zones of band according to claim 4, it is characterised in that: institute
Stating through-hole is rectilinear through-hole, and the side of corresponding through-hole and the width in panel section are parallel；Or
The through-hole is bevel edge through-hole, wide at included angle A, and A≤20 ° in the bevel edge of corresponding through-hole and panel section.
6. the kitchen ventilator of the multi-frequency noise filtering of the multiple panel zones of band according to claim 5, it is characterised in that: institute
The aperture for stating through-hole is defined as d, and d≤30mm；
The value of the d is multiple.
7. the kitchen ventilator of the multi-frequency noise filtering of the multiple panel zones of band according to claim 6, it is characterised in that: institute
Stating the minimum range between the edge of through-hole and the edge of adjacent through-holes is b, and b is the arbitrary value greater than 0；
The value of the b is multiple.
8. the kitchen ventilator of the multi-frequency noise filtering of the multiple panel zones of band according to claim 7, it is characterised in that: it is logical
Cross the edge in the aperture, through-hole that adjust different through-holes and the edge minimum range of adjacent through-holes, the distribution of the via regions of panel or
Person's noise filtering device reaches multi-frequency noise noise reduction at a distance from smoke machine main body；
There are gaps between the panel and the immediate wall surface of smoke machine main body, are H by the distance definition in gap1；
The noise filtering device is additionally provided with sound-absorbing part, and sound-absorbing part assembles smoke machine main body；
The thickness of the sound-absorbing part is defined as H2, and H2≤0.6H1。
9. the kitchen ventilator of the multi-frequency noise filtering of the multiple panel zones of band according to claim 8, it is characterised in that: institute
State the outer surface that sound-absorbing part is fixed on panel；Or
The sound-absorbing part is fixed on the surface of panel Yu the nearest wall surface of smoke machine main body；Or
The sound-absorbing part is fixed between panel and the nearest wall surface gap of smoke machine main body.
10. the kitchen ventilator of the multi-frequency noise filtering of the multiple panel zones of band according to claim 9, it is characterised in that:
The sound-absorbing part is fiber, PP cotton, polyester fiber, carbon fiber or porous foam；Or
The sound-absorbing part is porous plate；
The panel is metal decking, plastic front board or alloy panel；
The panel is connected with reinforced structure；
The reinforced structure is convex closure, recessed packet or reinforcing rib；
It is 100Hz~8000Hz that the noise filtering device, which eliminates noisy frequency range,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821121222.9U CN208794487U (en) | 2018-07-14 | 2018-07-14 | A kind of kitchen ventilator of the multi-frequency noise filtering of the multiple panel zones of band |
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| CN108731067A (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 of the multi-frequency noise filtering of the multiple panel zones of band |
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| CN108731067A (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 of the multi-frequency noise filtering of the multiple panel zones of band |
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