CN208431851U - A kind of kitchen ventilator of the three-dimensional noise filtering device of band - Google Patents
A kind of kitchen ventilator of the three-dimensional noise filtering device of band Download PDFInfo
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- CN208431851U CN208431851U CN201821124940.1U CN201821124940U CN208431851U CN 208431851 U CN208431851 U CN 208431851U CN 201821124940 U CN201821124940 U CN 201821124940U CN 208431851 U CN208431851 U CN 208431851U
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Abstract
A kind of kitchen ventilator of the three-dimensional noise filtering device of band is provided with smoke machine main body and can reduce the noise filtering device of specific unifrequency noise or multi-frequency noise, and noise filtering device is assemblied in smoke machine main body.There are gaps between the noise filtering device and the immediate wall surface of smoke machine main body.The noise filtering device is set as being distributed with multiple for eliminating the panel of the through-hole of specific unifrequency noise or multi-frequency noise.A kind of kitchen ventilator of the three-dimensional noise filtering device of band of the utility model can adjust edge and the edge minimum range of adjacent through-holes, the through-hole distribution of panel or noise filtering device and the specific unifrequency noise of combination or multi-frequency noise noise reduction at a distance from smoke machine main body in the aperture of different through-holes, through-hole.The noise filtering device is able to maintain long-term good noise reduction effect, which has the advantages that be easy to arrange, and dust, the grease on surface etc. can be by removing cleaning.The noise filtering device has the advantages that low cost, reliability are high.
Description
Technical field
The utility model relates to kitchen ventilator field, in particular to the kitchen ventilator of a kind of three-dimensional noise filtering device of band.
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.
Existing kitchen ventilator noise reduction in the prior art, is mostly the drop that noise is realized by active noise reduction and passive noise reduction mode
It is low.Active noise reduction mode can only act on noise of the frequency within 1000Hz, and the noise greater than 1000Hz can only be passed through
Passive noise reduction technology processing.And the specific noise frequency of reduction can be arranged in the passive denoising device of the prior art, it is right
In different kitchen ventilators, the frequency for the maximum noise that may mainly generate is not and identical, and the kitchen ventilator of the prior art is not directed to
Main frequency into noise reduction.Again since the noisy frequency range that kitchen ventilator generates can be 100Hz~8000Hz, it is clear that single
The passive denoising device of frequency band 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 of three-dimensional noise filtering device of band to solve existing skill
Art deficiency is very necessary.
Utility model content
The purpose of this utility model is that providing a kind of three-dimensional noise filtering of band in place of avoiding the deficiencies in the prior art
The kitchen ventilator of device.The kitchen ventilator with three-dimensional noise filtering device have can reduce specific unifrequency noise or multi-frequency
The advantages of noise.
The above-mentioned purpose of the utility model is realized by following technical measures:
A kind of kitchen ventilator of three-dimensional noise filtering device of band is provided, smoke machine main body is provided with and specific unifrequency can be reduced
The noise filtering device of noise or multi-frequency noise, noise filtering device are assemblied in smoke machine main body.
There are gaps between the noise filtering device and the immediate wall surface of smoke machine main body.
The noise filtering device is set as being distributed with multiple for eliminating specific unifrequency noise or multi-frequency noise
Through-hole panel.
Preferably, above-mentioned gap is full open type space.
Another preferred, above-mentioned smoke machine main body also sets up protrusion, protrusion integrally connected and wall surface.
Preferably, above-mentioned gap is disconnected by the protrusion of smoke machine main body and constitutes semi-open-type space.
Preferably, above-mentioned noise filtering device is additionally provided with sound-absorbing part, and sound-absorbing part assembles smoke machine main body.
It is H by the distance definition of noise filtering device and the immediate wall surface of smoke machine main body1, the thickness of sound-absorbing part is defined as
H2, and H2≤0.6H1。
Preferably, above-mentioned sound-absorbing part is fixed on panel and is located towards a side of smoke machine main body；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, the aperture of above-mentioned through-hole is defined as d, and d≤30mm.
Preferably, above-mentioned d is single numerical value or multiple numerical value.
Preferably, the edge minimum range of the edge of above-mentioned through-hole and adjacent through-holes is b, and b is the arbitrary value greater than 0.
Preferably, above-mentioned b is single numerical value or multiple numerical value.
The utility model adjusts the edge minimum range in the aperture of different through-holes, the edge of through-hole and adjacent through-holes, panel
Through-hole distribution or combination specific unifrequency noise or multi-frequency noise of the noise filtering device at a distance from smoke machine main body
Noise reduction.
Preferably, the thickness of above-mentioned panel is less than 20mm.
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 sound-absorbing part is fiber, PP cotton, polyester fiber, Carbon fibe or porous foam；Or
The sound-absorbing part is porous plate.
Preferably, above-mentioned panel is metal decking, plastic front board or alloy panel.
Preferably, above-mentioned panel is fixedly 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,.
Preferably, above-mentioned panel is provided with multiple regions, and multiple through-holes are by area distribution in corresponding positions of panels.
Preferably, above-mentioned zone is divergence expression region, spiral region, wave region, winding type region or removing
The random mode region of above-mentioned zone.
Preferably, above-mentioned zone is bilateral symmetry formula region, formula region symmetrical above and below or asymmetric formula region.
A kind of kitchen ventilator of the three-dimensional noise filtering device of band of the utility model is provided with smoke machine main body and can reduce spy
The noise filtering device of order frequency noise or multi-frequency noise, noise filtering device are assemblied in smoke machine main body.The noise
There are gaps between filter device and the immediate wall surface of smoke machine main body.The noise filtering device is set as that multiple use are distributed with
In the panel for the through-hole for eliminating specific unifrequency noise or multi-frequency noise.Denoising device in the prior art can only be directed to
Single target frequency noise reduction.A kind of kitchen ventilator of the three-dimensional noise filtering device of band of the utility model can adjust different logical
The edge minimum range in the aperture in hole, the edge of through-hole and adjacent through-holes, the through-hole distribution of panel or noise filtering device with
The specific unifrequency noise of the combination of the distance of smoke machine main body or multi-frequency noise noise reduction.The noise filtering device is able to maintain for a long time
Good noise reduction effect, the noise filtering device have the advantages that be easy to arrange, and dust, the grease on surface etc. can be clear by removing
Reason.The noise filtering device has the advantages that low cost, reliability are high.The material of the noise filtering device is anticorrosive, anti-ization
Learn property and be hardly damaged.It can be effectively reduced narrow frequency noise and broadband noise, noise reduction wide frequency range can reduce multiple frequencies
Noise.
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 a kind of range hood structure schematic diagram of the three-dimensional noise filtering device of band of embodiment 1.
Fig. 2 is the panel schematic diagram in Fig. 1.
Fig. 3 is a kind of range hood structure schematic diagram of the three-dimensional noise filtering device of band of embodiment 2.
Fig. 4 is the panel schematic diagram of embodiment 4.
Fig. 5 is the panel construction schematic diagram of the utility model embodiment 5.
Fig. 6 is through-hole different zones distribution mode, and the B in A and Fig. 6 in Fig. 6 is bilateral symmetry formula region, the C in Fig. 6
It is formula region symmetrical above and below with the D in Fig. 6, the F in E and Fig. 6 in Fig. 6 is asymmetric formula region.
Fig. 7 is the panel construction schematic diagram of the utility model embodiment 6.
Fig. 8 is through-hole different zones distribution mode, and the B in A and Fig. 8 in Fig. 8 is divergence expression region, C and figure in Fig. 8
D in 8 is spiral region, and the F in E and Fig. 8 in Fig. 8 is wave region, and the H in G and Fig. 8 in Fig. 8 is winding type
Region, the J in I and Fig. 8 in Fig. 8 are random mode region.
Fig. 1 includes into Fig. 8:
Noise filtering device 1,
Panel 11, through-hole 111, reinforced structure 112,
Sound-absorbing part 12,
Smoke machine main body 2,
Full open type space 21, semi-open-type space 22, wall surface 23, protrusion 24.
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 three-dimensional noise filtering device of band is provided with smoke machine main body 2 and can reduce as shown in Fig. 1 to 2
The noise filtering device 1 of specific unifrequency noise or multi-frequency noise, noise filtering device 1 are assemblied in smoke machine main body 2.Noise
There are gaps between filter device 1 and the immediate wall surface 23 of 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 specific unifrequency noise or multi-frequency noise.
The gap of the present embodiment is full open type space 21.The experiment proved that in full open type space 21, different noises
The incidence angle of sound wave may have multiple, and the incidence angle of multi-angle can make noise filtering device 1 form different resonant frequencies.Noise
The target frequency of filter device 1, which may require that, to be corrected, and especially sound wave enters noise filter, full open type space with glancing angle
21 resonant frequency has great change.The correction function of the target frequency in full open type space 21 is FA=FT+ε；Wherein, FA
For revised target frequency, FTInitial theory target frequency, ε are frequency of amendment.
It is H by the distance definition of noise filtering device 1 and the immediate wall surface 23 of smoke machine main body 21.Noise filtering device 1
It is additionally provided with sound-absorbing part 12, 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 11 panel 11 of panel close to the outer surface of smoke machine main body 2.It should be noted that
The sound-absorbing part 12 of the utility model can also be fixed on surface or the sound-absorbing part of panel 11 and the nearest wall surface 23 of smoke machine main body 2
12 are fixed between panel 11 and nearest 23 gap of wall surface of smoke machine main body 2, depending on specific embodiment is with actual conditions.
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 fibe or porous bubble
Cotton.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, reinforces drop
It makes an uproar effect.
The aperture of the through-hole 111 of the utility model is defined as d, and d≤30mm；Wherein d is multiple numerical value.The utility model
The edge of through-hole 111 and the edge minimum range of adjacent through-holes 111 be b, b is arbitrary value greater than 0, and wherein b is multiple numbers
Value.The noise filtering device 1 of the present embodiment can reduce multi-frequency noise.
In the constant situation of aperture d, the value of the edge minimum range b at the edge and adjacent through-holes 111 of through-hole 111 is smaller to disappear
The target noise frequency removed is bigger.Under the edge of through-hole 111 and the constant situation of edge minimum range b of adjacent through-holes 111,
The smaller target noise frequency to be eliminated of the value of aperture 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 to specific unifrequency noise noise reduction.But work as b
Specific unifrequency noise or multi-frequency noise noise reduction are combined into d for that can match according to the value of the two when multiple and different values.B's
Value and the number of value of d, size according to the actual situation depending on.
The utility model is by adjusting the side in the aperture of different through-holes 111, the edge of through-hole 111 and adjacent through-holes 111
Edge minimum range, the distribution of through-hole 111 of panel 11 or combination specific list of the noise filtering device 1 at a distance from smoke machine main body 2
Frequency noise or multi-frequency noise noise reduction.And the thickness of every deck panels 11 is less than 20mm.
The shape of the through-hole 111 of the utility model is circle, ellipse, triangle, square, rectangle, pentagon, six
At least one of side shape, diamond shape or irregular shape.The through-hole 111 of specific the present embodiment is conveniently of circular shape, because
It is upper relatively easy in technique production for circle, 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 above-mentioned various shapes, specific embodiment with actual conditions and
It is fixed.
The denoising device principle of the utility model: noise filtering device 1 can be in limited closed space, in noise source
When traveling to noise filtering device 1, noise reduction is carried out.Sound wave is usually propagated with opposite 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, when the edge of aperture d and through-hole 111 with it is adjacent
After the edge minimum range b of through-hole 111 is determined, specific noise frequency is filled with the noise filtering that the frequency that sets the goal has been arranged in space
1 is set, covibration is formed.When resonance occurs, the sound wave of oscillation can intensely pierce into out through-hole 111 back and forth in air, make an uproar
The sound of sound can be converted to friction loss in the process, reach and eliminate target frequency noise.
The kitchen ventilator with three-dimensional noise filtering device is provided with smoke machine main body 2 and can reduce specific unifrequency noise
Or the noise filtering device 1 of multi-frequency noise, noise filtering device 1 are assemblied in smoke machine main body 2.The noise filtering device 1
There are gaps between the immediate wall surface 23 of smoke machine main body 2.The noise filtering device 1 is set as being distributed with multiple for disappearing
Except specific unifrequency noise or the panel 11 of the through-hole 111 of multi-frequency noise.Denoising device in the prior art can only be directed to
Single target frequency noise reduction.A kind of kitchen ventilator of the three-dimensional noise filtering device of band of the utility model can adjust different logical
The aperture in hole 111, the edge minimum range at the edge of through-hole 111 and adjacent through-holes 111, panel 11 the distribution of through-hole 111 or
The specific unifrequency noise of combination of the noise filtering device 1 at a distance from smoke machine main body 2 or multi-frequency noise noise reduction.The noise mistake
Filter device 1 is able to maintain long-term good noise reduction effect, which has the advantages that be easy to arrange, dust, the oil on surface
Rouge etc. can be by removing cleaning.The noise filtering device 1 has the advantages that low cost, reliability are high.The noise filtering device 1
Material be anticorrosive, chemical resistance and the advantages of be hardly damaged, can be effectively reduced specific unifrequency or broadband noise.
Embodiment 2.
A kind of kitchen ventilator of the three-dimensional noise filtering device of band, as shown in figure 3, other features are same as Example 1, it is different
Place is that the smoke machine main body 2 of the present embodiment is additionally provided with protrusion 24,24 integrally connected of protrusion and wall surface 23.Gap by
The protrusion 24 of smoke machine main body 2 disconnects and constitutes semi-open-type space 22.
The gap of noise filtering device 1 is semi-open-type space 22, sound of the noise filtering device 1 in different incidence angles
Wave formed resonant frequency be it is the same, in other words the target frequency of noise filtering device 1 is constant.
The present embodiment compared with Example 1 the advantages of be that it is that semi-open-type is empty that the noise filtering device 1, which is applicable in smoke machine host,
Between 22, such as the wall surface 23 of smoke machine main body 2 is provided with the structures such as protrusion 24 and forms discontinuous space.The face of the present embodiment
The assembly method of plate 11 improves noise filtering device 1 to the adaptability of smoke machine main body 2, while also improving noise filtering device
The stability of 1 target frequency.
Embodiment 3.
A kind of kitchen ventilator of the three-dimensional noise filtering device of band, other features are same as Example 1, the difference is that,
The panel 11 of the present embodiment is specially metal decking 11, it should be noted that the panel 11 of the utility model or plastic front board
11 or alloy panel 11, depending on specific embodiment is with actual conditions.
The panel 11 of the metal of the present embodiment has the advantages that high temperature resistant, durable.
Embodiment 4.
A kind of kitchen ventilator of the three-dimensional noise filtering device of band, as shown in figure 4, other features are same as Example 1, it is different
Place is that the panel 11 of the present embodiment is fixedly connected with reinforced structure 112.Specific reinforced structure 112 is reinforcing rib.This reality
Eliminating noisy frequency range with novel noise filtering device 1 is 100Hz~8000Hz.
It should be noted that the reinforced structure 112 of the utility model or convex closure or recessed packet, specific embodiment
Depending on 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, so that the sound wave of noise can cancel out each other, from
And reduce the intensity of noise.
Embodiment 5.
A kind of kitchen ventilator of the three-dimensional noise filtering device of band, as shown in figure 5, other features are same as Example 1, it is different
Place is that 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 presses bilateral symmetry formula region such as the a-quadrant in Fig. 5, formula region such as Fig. 5 symmetrical above and below
In B area and various forms of area distributions in three kinds of the region C and D in asymmetric formula region such as Fig. 5 in panel 11.
The bilateral symmetry formula region of the present embodiment, as shown in the A in Fig. 5.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. 6 in A, Fig. 6 in Fig. 5 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, as shown in the B in Fig. 5.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. 6 in B, Fig. 6 in Fig. 5, 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, as shown in the D in the C and Fig. 5 in Fig. 5.It should be noted that the utility model
In asymmetric formula region be not limited to the E in D, Fig. 6 in C, Fig. 5 in Fig. 5 or F in Fig. 6 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 5 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 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.
Embodiment 6.
A kind of kitchen ventilator of the three-dimensional noise filtering device of band, as shown in fig. 7, other features are same as Example 1, it is different
Place is, the region of embodiment can be divided into divergence expression region, spiral region, wave region, winding type region or
Remove the random mode region of 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. 7 in the spiral region of through-hole 111 of the present embodiment panel 11 such as Fig. 7, 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. 7 in Fig. 7 are in panel 11.
The divergence expression region of the present embodiment, as shown in the D in Fig. 7.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. 8 in D, Fig. 8 in Fig. 7, 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. 7 in Fig. 7, it should be noted that, in the utility model
Spiral region be not limited to these four spiral regions of the C in B, Fig. 8 in A, Fig. 7 in Fig. 7 or D in Fig. 8,
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. 7, 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. 8 in C, Fig. 8 in Fig. 7, 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 regions of the F in the E and Fig. 8 in Fig. 8,
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 modes of the H in the G and Fig. 8 in Fig. 8,
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 7 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.
Embodiment 7.
A kind of design of the kitchen ventilator of the three-dimensional noise filtering device of band:
Target frequency: 8000Hz.
The aperture d=10mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b=23mm of adjacent through-holes 111,
H1=2.5mm.
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 of the three-dimensional noise filtering device of band:
Target frequency: 100Hz.
The aperture d=2mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b=23mm of adjacent through-holes 111,
H1=50mm.
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 of the three-dimensional noise filtering device of band:
Target frequency 1:800Hz.
The aperture d=4mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b=18mm of adjacent through-holes 111,
H1=20mm.
Target frequency 2:800Hz.
The aperture d=5mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b=23mm of adjacent through-holes 111,
H1=20mm.
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 of the three-dimensional noise filtering device of band:
Target frequency 1:7000Hz.
The aperture d=10mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b=23mm of adjacent through-holes 111,
H1=2.6mm.
Target frequency 2:800Hz.
The aperture d=5mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b=23mm of adjacent through-holes 111,
H1=20mm.
Therefore the kitchen ventilator can only effectively eliminate pair in the characteristic with the corresponding through-hole 111 of above-mentioned two target frequency
The noise for the frequency answered.
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
The member of art, 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 three-dimensional noise filtering device of band, it is characterised in that: it is provided with smoke machine main body and can reduce specific
The noise filtering device of unifrequency noise or multi-frequency noise, noise filtering device are assemblied in smoke machine main body；
There are gaps between the noise filtering device and the immediate wall surface of smoke machine main body；
The noise filtering device is set as being distributed with multiple for eliminating the logical of specific unifrequency noise or multi-frequency noise
The panel in hole.
2. the kitchen ventilator of the three-dimensional noise filtering device of band according to claim 1, it is characterised in that: the gap is complete
Open type space.
3. the kitchen ventilator of the three-dimensional noise filtering device of band according to claim 1, it is characterised in that: the smoke machine main body
Also set up protrusion, protrusion integrally connected and wall surface；
The gap is disconnected by the protrusion of smoke machine main body and constitutes semi-open-type space.
4. the kitchen ventilator of the three-dimensional noise filtering device of band according to claim 2 or 3, it is characterised in that: the noise
Filter device is additionally provided with sound-absorbing part, and sound-absorbing part assembles smoke machine main body；
It is H by the distance definition of noise filtering device and the immediate wall surface of smoke machine main body1, the thickness of sound-absorbing part is defined as H2, and
H2≤0.6H1；
The sound-absorbing part is fixed on panel and is located towards a side of smoke machine main body；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.
5. the kitchen ventilator of the three-dimensional noise filtering device of band according to claim 4, it is characterised in that: the hole of the through-hole
Diameter is defined as d, and d≤30mm；
The d is single numerical value or multiple numerical value.
6. the kitchen ventilator of the three-dimensional noise filtering device of band according to claim 5, it is characterised in that: the side of the through-hole
The edge minimum range of edge and adjacent through-holes is b, and b is the arbitrary value greater than 0；
The b is single numerical value or multiple numerical value.
7. the kitchen ventilator of the three-dimensional noise filtering device of band according to claim 4, it is characterised in that: adjust different through-holes
Aperture, through-hole edge and the edge minimum ranges of adjacent through-holes, the through-hole distribution of panel or noise filtering device and cigarette
The specific unifrequency noise of the combination of the distance of owner's body or multi-frequency noise noise reduction；
The thickness of the panel is less than 20mm；
The shape of the through-hole is circle, ellipse, triangle, square, rectangle, pentagon, hexagon, diamond shape or not
At least one of regular shape.
8. the kitchen ventilator of the three-dimensional noise filtering device of band according to claim 7, it is characterised in that: the sound-absorbing part is
Fiber, PP cotton, polyester fiber, Carbon fibe or porous foam；Or
The sound-absorbing part is porous plate.
9. the kitchen ventilator of the three-dimensional noise filtering device of band according to claim 8, it is characterised in that: the panel is gold
Belong to panel, plastic front board or alloy panel；
The panel is fixedly 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,.
10. the kitchen ventilator of the three-dimensional noise filtering device of band according to claim 9, it is characterised in that: the panel is set
Multiple regions are equipped with, multiple through-holes are by area distribution in corresponding positions of panels；
The region be divergence expression region, spiral region, wave region, winding type region or remove above-mentioned zone with
Machine formula region；
The region is bilateral symmetry formula region, formula region symmetrical above and below or asymmetric formula region.
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