CN108731067A - 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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- CN108731067A CN108731067A CN201810772815.XA CN201810772815A CN108731067A CN 108731067 A CN108731067 A CN 108731067A CN 201810772815 A CN201810772815 A CN 201810772815A CN 108731067 A CN108731067 A CN 108731067A
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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
- F24C15/2035—Arrangement or mounting of filters
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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)
- Filtering Of Dispersed Particles In Gases (AREA)
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 that multiple panels for eliminating the through-hole of multi-frequency are distributed with.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 can keep long-term good noise reduction, 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.Narrow frequency noise and broadband noise can be effectively reduced, noise reduction wide frequency range can reduce the noise of multiple frequencies.
Description
Technical field
The present invention relates to kitchen ventilator field, more particularly to the oil smoke of the multi-frequency noise filtering of a kind of multiple panel zones of band
Machine.
Background technology
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 increasingly paid attention to.
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 more than 1000Hz
Noise reduction technology processing.And the noise that the passive denoising device of the prior art can only be directed to single-frequency section is handled, 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
Kitchen ventilator can not be directed to for the passive denoising device of single-frequency section generate good noise reduction in technology.
Therefore, in view of the shortcomings of the prior art, providing a kind of kitchen ventilator of the multi-frequency noise filtering of the multiple panel zones of band
It is very necessary to solve prior art deficiency.
Invention content
A kind of multifrequency of the multiple panel zones of band is provided it is an object of the invention to avoid the deficiencies in the prior art place
The kitchen ventilator of rate noise filtering.The kitchen ventilator of the multi-frequency noise filtering with multiple panel zones has and can eliminate multi-frequency and make an uproar
The advantages of sound.
The above-mentioned purpose of the present invention is realized by following technical measures：
A kind of kitchen ventilator of the multi-frequency noise filtering of the 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 that multiple panels for eliminating the through-hole of multi-frequency noise are distributed with.
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 symmetrical 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 is parallel with the width in panel section；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 arbitrary more than 0
Value.
It is further preferred that 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, panel
Via regions distribution or noise filtering device reach 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 and 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 cottons, polyester fiber, Carbon fibe 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 present invention is provided with smoke machine main body and makes an uproar
Sound filter device, the noise filtering device that can eliminate multi-frequency noise are assemblied in smoke machine main body；The noise filtering device is set
It is set to and multiple panels for eliminating the through-hole of multi-frequency is distributed with.Denoising device in the prior art can only be directed to single
Target frequency noise reduction.A kind of kitchen ventilator of the multi-frequency noise filtering of the multiple panel zones of band of the present invention can be by adjusting not
With the edge minimum range in the aperture of through-hole, the edge of through-hole and adjacent through-holes, the distribution of the via regions of panel or noise mistake
Filter device reaches multi-frequency noise noise reduction at a distance from smoke machine main body.The noise filtering device can keep long-term good noise reduction effect
Fruit, which, which has, is easy to arrange, and dust, the grease on surface etc. can remove cleaning.The noise filtering device has
Have 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
Narrow frequency noise and broadband noise are effectively reduced, noise reduction wide frequency range can reduce the noise of multiple frequencies.
Description of the drawings
Using attached drawing, the present invention is further illustrated, but the content in attached drawing does not constitute any limit to the present invention
System.
Fig. 1 is the panel construction schematic diagram of the embodiment of the present invention 1.
Fig. 2 is through-hole different zones distribution mode, and the B in A and Fig. 2 in Fig. 2 is symmetrical 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 embodiment of the present invention 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 minimum range schematic diagram at the edge and adjacent through-holes of the through-hole of embodiment 3.
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 embodiment of the present invention 7.
In Fig. 1 to Figure 11, include：
Noise filtering device 1,
Panel 11, through-hole 111, reinforced structure 112,
Sound-absorbing part 12,
Smoke machine main body 2.
Specific implementation mode
Technical scheme of the present invention 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, as shown in Figure 1, being provided with smoke machine main body
2 and noise filtering device 1, the noise filtering device 1 that multi-frequency noise can be eliminated be assemblied in smoke machine main body 2.Noise filtering fills
1 is set to be set as that multiple panels 11 for eliminating the through-hole 111 of multi-frequency noise are distributed with.
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 11 position of corresponding 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
Need the frequency of target noise eliminated.
Panel 11 of the present invention is provided with multiple regions, and multiple through-holes 111 are by area distribution in 11 position of corresponding panel.This
The region of invention can be divided into symmetrical formula region, formula region symmetrical above and below or asymmetric formula region.Specifically, this implementation
The through-hole 111 of example panel 11 is by the B area in symmetrical formula region such as a-quadrant, formula region symmetrical above and below such as Fig. 1 in Fig. 1
And the various forms of area distributions in three kinds of the regions C and D in asymmetric formula region such as Fig. 1 are in panel 11.
The symmetrical formula region of the present embodiment, as shown in the A in Fig. 1.It should be noted that symmetrical in the present invention
Formula 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 symmetrical formula modes, other
The region of arbitrary symmetrical formula mode also meets the requirement in symmetrical formula region in the present invention, also in the protection model of the present invention
In enclosing.
The formula region symmetrical above and below of the present embodiment, as shown in the B in Fig. 1.It should be noted that symmetrical above and below in the present invention
Formula 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, any other
The region of formula mode symmetrical above and below also meets the requirement in present invention formula region symmetrical above and below, also within the scope of the present invention.
The asymmetric formula region of the present embodiment, as shown in the D in the C and Fig. 1 in Fig. 1.It should be noted that in the present invention
Asymmetric formula region is not limited to these four asymmetric formula sides of the F in E or Fig. 2 in D, Fig. 2 in C, Fig. 1 in Fig. 1
The region of formula, the region of any other asymmetry formula mode also meets the requirement in asymmetric formula region of the invention, also in the present invention
Protection domain in.
It should be noted that the through-hole 111 of the panel 11 of the present invention is not limited to the left and right as shown in Figure 1 of the present embodiment
The distribution mode in symmetrical region, formula region symmetrical above and below and asymmetric formula region, or symmetrical formula region, up and down
The multiple arrangements of any one in symmetrical region or asymmetric formula region, a row that can also be more than two kinds of regions
Row, or multiple arrangements more than two kinds of regions, depending on specific performance is with actual conditions.
The shape of through-hole 111 of the present invention be circle, ellipse, triangle, square, rectangle, pentagon, hexagon,
At least one of diamond shape or irregular shape.The present embodiment through-hole 111 it is conveniently of circular shape because circle in technique
It is relatively easy in making, and because of the interference of not no corner angle, noise reduction 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 present invention is such：Noise filtering device 1 can made an uproar in limited closed space
When sound source travels to noise filtering device 1, noise reduction is carried out.Sound wave is usually propagated with negative direction touching noise filtering device 1,
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 back and forth in air, and the acoustic energy of noise exists
It is converted to friction loss during this, 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 effectively reduce 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 111 spiral region of through-hole 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 regions 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 region in the present invention is not
It is confined 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
The requirement in divergence expression region of the present invention is also complied with, also within the scope of the present invention.
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, the spiral shell in the present invention
Rotating region is not limited to these four spiral regions of the D in the C or Fig. 4 in B, Fig. 4 in A, Fig. 3 in Fig. 3, other
Arbitrary spiraling manner region also complies with the requirement of the present invention, also within the scope of the present invention.
The random mode region of the present embodiment, as shown in the C in Fig. 3, the random mode region in the present invention is not limited in Fig. 3
C, Fig. 4 in I or Fig. 4 in J these three random mode regions, any other random mode mode region also complies with the present invention
Requirement, also within the scope of the present invention.
Wave region in the present invention is not limited to both wave regions of the F in the E and Fig. 4 in Fig. 4, other
Arbitrary wave mode region also complies with the requirement of the present invention, also within the scope of the present invention.
Winding type region in the present invention is not limited to both winding type modes of the H in the G and Fig. 4 in Fig. 4, other
Arbitrary winding type mode region also complies with the requirement of the present invention, also within the scope of the present invention.
It should be noted that the through-hole 111 of the panel 11 of the present invention is not limited to the diverging as shown in Figure 3 of the present embodiment
The distribution mode in formula region, random mode region and spiral region, or divergence expression region, spiral region, wave
The multiple arrangements of any one in the random mode region in region, winding type region or removing above-mentioned zone, can also be two kinds
A more than region arrangement, or multiple arrangement specific embodiments more than two kinds of regions can be according to practical feelings
Depending on condition.
The present embodiment compared with Example 1, increase through-hole 111 11 region of panel diversity.
Embodiment 3.
A kind of kitchen ventilator of the multi-frequency noise filtering in multiple 11 regions of panel of band, as shown in figure 5, other characteristics and implementation
Example 1 is identical, the difference is that：The through-hole 111 of the present embodiment is preferably rectilinear through-hole 111, the side of corresponding through-hole 111 and panel
The width in 11 sections is parallel, as shown in Figure 6.
It should be noted that the through-hole 111 or bevel edge through-hole 111 of the present invention, the bevel edge and panel of corresponding through-hole 111
Wide at included angle A, and A≤20 ° in 11 sections, as shown in Figure 4.May be combinations of the above, specific embodiment is with reality
Depending on situation.
Noise filtering can be improved in the selection of the diversity of the distribution mode of the through-hole 111 of the present embodiment and the shape of through-hole 111
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 more than 0.The value of the d and b of the present embodiment are all multiple.
The present invention is constant in aperture d, the value at the edge of through-hole 111 and the edge minimum range b of adjacent through-holes 111
The target noise frequency of smaller elimination is bigger.It is constant at the edge of through-hole 111 and the edge minimum range b of adjacent through-holes 111
In the case of, 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 present invention is to carry out noise reduction using the principle of resonance, when the side aperture d and through-hole 111
After the edge minimum range b of edge and adjacent through-holes 111 is determined, noise filtering device 1 can make in space specific noise frequency and make an uproar
The target frequency of sound filter device 1 forms covibration.When resonance occurs, the sound wave of oscillation can intensely come in air
It is threaded back through disengaging through-hole 111, the acoustic energy of noise is converted to friction loss in the process, reaches and eliminates target frequency noise.
A kind of kitchen ventilator of the multi-frequency noise filtering in multiple 11 regions of panel of band of the present invention can be by adjusting difference
The aperture of through-hole 111 and the edge of through-hole 111 and the edge minimum range of adjacent through-holes 111,111 region of through-hole point of panel 11
Cloth 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 effectively reduce 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 2 immediate wall surface of panel 11 and smoke machine main body, 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 is defined as
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 present invention can be with
It is fixed on the surface of panel 11 and 2 nearest wall surface of smoke machine main body or sound-absorbing part 12 is fixed on panel 11 and smoke machine main body 2 is nearest
Wall surface gap between, specific embodiment is depending on actual conditions.
Sound wave is usually propagated with negative 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 present invention passes through the inner wall of noise filter and smoke machine main body 2
The distance in face noise source wavelength a quarter away from degree at, the noise of the wavelength can be effectively eliminated, therefore to panel 11
Have difference of height, be adapted to eliminate different wave length noise source, reach multi-frequency noise noise reduction.
The density and material of sound-absorbing part 12 also have important influence, sound wave can directly through the sound-absorbing part of extremely-low density,
The frictional wear of acoustic 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 present invention is preferably fiber, PP cottons, polyester fiber, Carbon fibe 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 present invention may be plastic front board 11 or alloy 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
Bright, of the invention reinforced structure 112 or convex closure or recessed packet, or a variety of arbitrary combinations, it is specific real
Depending on mode is applied with actual conditions.
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, can cancel out each other to the sound wave of noise, 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 symmetrical 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 symmetrical area
Domain, the regions D in the regions 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, H1The thickness of=2.6mm, panel 11 are 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,H1The thickness of=20mm, panel 11 are 10mm.
Therefore the noise filtering device 1 of the kitchen ventilator is only in the spy with the corresponding through-hole of above-mentioned two target frequency 111
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
The table generation present invention can only be directed to the noise of two kinds of frequencies, and only corresponding different parameter, the present invention can eliminate the noise of multi-frequency,
Reach 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, H1The thickness of=2.5mm, panel 11 are 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,H1The thickness of=50mm, panel 11 are 10mm.
Therefore the noise filtering device 1 of the kitchen ventilator is only in the spy with the corresponding through-hole of above-mentioned two target frequency 111
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
The table generation present invention can only be directed to the noise of two kinds of frequencies, and only corresponding different parameter, the present invention can eliminate the noise of multi-frequency,
Reach wideband frequency noise reduction purpose.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than is protected to the present invention
The limitation of range, although being explained in detail to the present invention with reference to preferred embodiment, those skilled in the art should manage
Solution, can be modified or replaced equivalently 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 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 that multiple panels for eliminating the through-hole of multi-frequency noise are distributed with；
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
It is symmetrical formula region, formula region symmetrical above and below or asymmetric formula region to state 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
It is divergence expression region, spiral region, wave region, winding type region or the random mode area for removing above-mentioned zone to state region
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 is circle, ellipse, triangle, square, rectangle, pentagon, hexagon, diamond shape or not
At least one of regular shape.
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
It is rectilinear through-hole to state through-hole, and the side of corresponding through-hole is parallel with the width in panel section；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
It is b to state the minimum range between the edge of through-hole and the edge of adjacent through-holes, and b is the arbitrary value more 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 and 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 cottons, polyester fiber, Carbon fibe 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,.
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| CN201810772815.XA CN108731067A (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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117847000A (en) * | 2024-03-07 | 2024-04-09 | 山东省东澎冷暖工程有限公司 | Fan operation noise detection device |
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