CN208566809U - A kind of kitchen ventilator with multi-frequency noise filtering device - Google Patents
A kind of kitchen ventilator with multi-frequency noise filtering device Download PDFInfo
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- CN208566809U CN208566809U CN201821124397.5U CN201821124397U CN208566809U CN 208566809 U CN208566809 U CN 208566809U CN 201821124397 U CN201821124397 U CN 201821124397U CN 208566809 U CN208566809 U CN 208566809U
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Abstract
A kind of kitchen ventilator with multi-frequency noise filtering device, is provided with smoke machine main body and noise filtering device, and 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 a kind of kitchen ventilator with multi-frequency noise filtering device.
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, to provide a kind of kitchen ventilator with multi-frequency noise filtering device existing to solve
Technical deficiency is very necessary.
Utility model content
The purpose of this utility model is that providing a kind of band multi-frequency noise filtering in place of avoiding the deficiencies in the prior art
The kitchen ventilator of device.The kitchen ventilator with multi-frequency noise filtering device has the advantages that multi-frequency noise can be eliminated.
The above-mentioned purpose of the utility model is realized by following technical measures:
A kind of kitchen ventilator with multi-frequency noise filtering device is provided, smoke machine main body is provided with and multi-frequency can be eliminated and make an uproar
The noise filtering device of sound, noise filtering device are 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 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, 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 bilateral symmetry formula region, formula region symmetrical above and below or asymmetric formula region.
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, the aperture of above-mentioned through-hole is defined as d, and d≤30mm.
Preferably, 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.
Preferably, the value of above-mentioned b is multiple.
Preferably, above-mentioned panel is non-planar panel.
Preferably, the difference in height between the horizontal highest point and horizontal bottom position of above-mentioned panel is defined as Δ h, and Δ h≤
100mm。
Preferably, above-mentioned panel is mutation formula panel or gradual change type panel.
Preferably, above-mentioned panel is flat panel.
Further, panel is set as multiple.
Multiple panel-mounteds are at continuous limited encirclement structural body or discontinuous limited encirclement structural body.
There are gaps between panel and the immediate wall surface of smoke machine main body, are H by the distance definition in gap1。
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.
Panel is metal decking, plastic front board or alloy panel.
Panel is connected with reinforced structure.
The reinforced structure is convex closure, recessed packet or reinforcing rib.
It is 100Hz~8000Hz that noise filtering device, which eliminates noisy frequency range,.
A kind of kitchen ventilator with multi-frequency noise filtering device of the utility model, is provided with smoke machine main body and noise filtering
Device, the noise filtering device that can eliminate multi-frequency noise are assemblied in smoke machine main body；The noise filtering device is set as point
It is furnished with multiple for eliminating the panel of the through-hole of multi-frequency.Denoising device in the prior art, can only be for single target frequency
Rate noise reduction.A kind of kitchen ventilator with multi-frequency noise filtering device of the utility model can be by adjusting the hole of different through-holes
Edge minimum range, the distribution of the via regions of panel or the noise filtering device and cigarette of diameter, the edge of through-hole and adjacent through-holes
The distance of owner's body reaches multi-frequency noise noise reduction.The noise filtering device is able to maintain long-term good noise reduction effect, the noise
Filter device, which has, to be easy to arrange, and dust, the grease on surface etc. can remove cleaning.The noise filtering device have low cost,
The high advantage of reliability.The advantages of material of the noise filtering device is anticorrosive, chemical resistance and is hardly damaged, while can
Narrow frequency noise and broadband noise is effectively reduced.
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 aperture schematic diagram of the through-hole of embodiment 2.
Fig. 4 is the edge of the through-hole of embodiment 3 and the edge minimum range schematic diagram of adjacent through-holes.
(1) A of Fig. 5 is the main view of mutation formula panel, the top view that (1) B in Fig. 5 is (1) A in Fig. 5；
(2) A of Fig. 5 is the main view of mutation formula panel, the top view that (2) B in Fig. 5 is (2) A in Fig. 5；
(3) A of Fig. 5 is the main view of mutation formula panel, the top view that (3) B in Fig. 5 is (3) A in Fig. 5；
(4) A of Fig. 5 is the main view of gradual change type panel, the top view that (4) B in Fig. 5 is (4) A in Fig. 5；
(5) A of Fig. 5 is the main view of gradual change type panel, the top view that (5) B in Fig. 5 is (5) A in Fig. 5；
(6) A of Fig. 5 is the main view of gradual change type panel, the top view that (6) B in Fig. 5 is (6) A in Fig. 5.
Fig. 6 is the perspective view of the noise filtering device of embodiment 6.
Fig. 7 is a kind of kitchen ventilator schematic diagram with multi-frequency noise filtering device of embodiment 7.
Fig. 8 is the panel schematic diagram of embodiment 8.
Fig. 9 is the panel construction schematic diagram of the utility model embodiment 9.
Figure 10 is through-hole different zones distribution mode, and the B in A and Figure 10 in Figure 10 is divergence expression region, in Figure 10
D in C and Figure 10 is spiral region, and the F in E and Figure 10 in Figure 10 is wave region, in the G and Figure 10 in Figure 10
H be winding type region, the J in I and Figure 10 in Figure 10 is random mode region.
Fig. 1 includes into Figure 10:
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 with multi-frequency noise filtering device, as shown in Figure 1, being provided with smoke machine main 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 point
It is furnished with multiple for eliminating the panel 11 of the through-hole 111 of multi-frequency noise.
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, 111 area distribution of through-hole of panel 11 or noise filtering device 1 reach multifrequency at a distance from smoke machine main body 2
Rate noise noise reduction.
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 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 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 is to carry out noise reduction, the mesh of specific noise frequency and setting in space using the principle of resonance
The noise filtering device 1 of frequency is marked, covibration is formed.
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.
A kind of kitchen ventilator with multi-frequency noise filtering device of the utility model can be by adjusting different through-holes 111
Edge minimum range, 11 area distribution of through-hole of panel 11 or the noise in aperture and the edge of through-hole 111 and adjacent through-holes 111
Filter device 1 reaches multi-frequency noise noise reduction at a distance from smoke machine main body 2.Therefore the utility model can pass through 11 through-hole of panel
Division, arrangement and the arrangement in 111 regions can achieve wideband frequency noise reduction purpose.
The kitchen ventilator with multi-frequency noise filtering device, is provided with smoke machine main body 2 and noise filtering device 1, can disappear
Except the noise filtering device 1 of multi-frequency noise is assemblied in smoke machine main body 2；The noise filtering device 1 is set as being distributed with multiple
For eliminating the panel 11 of the through-hole 111 of multi-frequency.The noise filtering device 1 is able to maintain long-term good noise reduction effect.
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 with multi-frequency noise filtering device, as shown in figure 3, other characteristics are same as Example 1, it is different
Place is: the aperture of through-hole 111 is defined as d, and d≤30mm in the present embodiment.The value of the d of the present embodiment is multiple.
In the case where through-hole 111 other situations are constant, the smaller target noise to be eliminated of the value of the aperture d of through-hole 111
Frequency 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 resonance occurs, band through-hole
111 noise filtering device 1 and noise source forms covibration, and the sound wave of oscillation can be pierced into out intensely back and forth in air to be led to
Therefore hole 111, the sound of noise can be converted to friction loss, realize and eliminate target frequency noise.
A kind of kitchen ventilator with multi-frequency noise filtering device of the utility model can be by adjusting different through-holes 111
Aperture is reduced the noise of different target frequency, is reduced the noise of different target frequency, to pass through 11 through-hole of panel
Division, arrangement and the arrangement in 111 regions can achieve wideband frequency noise reduction purpose.
Embodiment 3.
A kind of kitchen ventilator with multi-frequency noise filtering device, as shown in figure 4, other features are same as Example 1, it is different
Place is that the edge of the through-hole 111 of the present embodiment and the edge minimum range of adjacent through-holes 111 are b, and b is any greater than 0
Value.The value of the b of the present embodiment is multiple.
In the case where through-hole 111 other situations are constant, the edge of through-hole 111 and the edge most narrow spacing of adjacent through-holes 111
Target noise frequency from the smaller elimination of the value of b is bigger.
A kind of kitchen ventilator with multi-frequency noise filtering device of the utility model can be by adjusting the edge of through-hole 111
The noise of different target frequency is reduced with the edge minimum range b of adjacent through-holes 111, to pass through 11 through-hole 111 of panel
Division, arrangement and the arrangement in region can achieve wideband frequency noise reduction purpose.
Embodiment 4.
A kind of kitchen ventilator with multi-frequency noise filtering device, other features are same as Example 1, the difference is that,
The panel 11 of the present embodiment is non-planar panel 11, and the panel 11 of the present embodiment is specially (1) institute of such as Fig. 5 of mutation formula panel 11
Show.The horizontal highest point of panel 11 and horizontal bottom position difference in height are defined as Δ h, and Δ h≤100mm, the tool Δ h of the present embodiment
=50mm.The Δ h=50mm of the present embodiment be supported according to experimental data because this numerical value to wideband frequency noise reduction compared with
It is good.
It should be noted that Δ h can be less than 100mm any positive number, specific numerical value can according to the actual situation depending on.This
The panel 11 of utility model can be mutation formula panel 11, or gradual change type panel 11, specific embodiment is with reality
Depending on situation.
The mutation formula panel 11 of the utility model is not limited to dash forward as shown in (3) of (1) of Fig. 5, (2) of Fig. 5 and Fig. 5
Variant panel 11, any other mutation formula 11 modes of panel are also within the protection scope of the present utility model.The utility model
Gradual change type panel 11 is not limited to the gradual change type panel 11 as shown in (6) of (4) of Fig. 5, (5) of Fig. 5 and Fig. 5, any other
11 mode of gradual change type panel is also within the protection scope of the present utility model.
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.In specific distance, about the four of noise source wavelength
/ mono- away from degree at, the speed of particle reaches highest, because the utility model passes through in noise filter and smoke machine main body 2
The distance of wall surface noise source wavelength a quarter away from degree at, the noise of the wavelength can be effectively eliminated, therefore to non-flat
Faceplate panels 11 have difference of height, are adapted to eliminate the noise source of different wave length, reach multi-frequency noise noise reduction.
Embodiment 5.
A kind of kitchen ventilator with multi-frequency noise filtering device, other features are same as Example 4, the difference is that,
Panel 11 is flat panel 11.The present embodiment is compared with embodiment 4, the advantages of 11 specific handling ease of flat panel.
Embodiment 6.
A kind of kitchen ventilator with multi-frequency noise filtering device, as shown in fig. 6, other features are same as Example 5, it is different
Place is, the panel 11 of the present embodiment be provided with it is multiple, specially three.Three panels 11 are assembled into continuous limited encirclement knot
Structure body.The panel 11 of the present embodiment is specially flat panel 11.
It should be noted that the utility model panel 11 can be flat panel 11, or it is non-planar, it is specific to implement
Depending on mode is with actual conditions.Panel 11 can be set there are two or above any positive integer, and multiple panels 11 fill
It is made into discontinuous limited encirclement structural body, depending on specific embodiment is with actual conditions.
The present embodiment compared with Example 1 the advantages of be the center of structural body that can be placed in noise source, it is non-planar to make an uproar
Sound filter device 1 can farthest surround noise source, to reach maximum drop effect.
Embodiment 7.
A kind of kitchen ventilator with multi-frequency noise filtering device, as shown in fig. 7, other features are same as Example 1, it is different
Place is that it is H by the distance definition in gap that there are gaps between panel 11 and the immediate wall surface of smoke machine main body 21.Noise
Filter 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.
The denoising device principle of the utility model is such that travel to noise in noise source in limited closed space
When filter device 1, noise reduction is carried out.Sound wave is usually propagated with opposite direction touching water conservancy diversion noise filtering device 1, so most of
Incidence wave can and back wave interfere.In specific distance, about a quarter of noise source wavelength away from i.e. H at degree1,
The speed of particle reaches highest.
It should be noted that the sound-absorbing part 12 of the utility model can be fixed on the table of panel 11 Yu the nearest wall surface of smoke machine main body 2
Face or sound-absorbing part 12 are fixed between panel 11 and the nearest wall surface gap of smoke machine main body 2, and specific embodiment is according to reality
Depending on the situation of border.
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.
Therefore the sound-absorbing part 12 of the utility model is preferably fiber, PP cotton, 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 8.
A kind of kitchen ventilator with multi-frequency noise filtering device, as shown in figure 8, other features are same as Example 1, it is different
Place is that the panel 11 of the present embodiment is specially metal decking 11.Noise filtering device 1 eliminates noisy frequency range
100Hz~8000Hz is it should be noted that the panel 11 of the utility model may be plastic front board 11 or alloy panel 11, tool
Depending on the embodiment of body 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 9.
A kind of kitchen ventilator with multi-frequency noise filtering device, as shown in Figures 9 and 10, other features are same as Example 1,
The difference is that the region of the present embodiment can be divided into divergence expression region, spiral region, wave region, winding type area
Domain 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. 9 in the spiral region of through-hole 111 of the present embodiment panel 11 such as Fig. 9, 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. 9 in Fig. 9 are in panel 11.
The divergence expression region of the present embodiment, as shown in the D in Fig. 9.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 Figure 10 in D, Figure 10 in Fig. 9, any other divergence expression side
Formula 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. 9 in Fig. 9, it should be noted that, in the utility model
Spiral region be not limited to these four spiral areas of the C in B, Figure 10 in A, Fig. 9 in Fig. 9 or D in Figure 10
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. 9, the random mode region in the utility model is not limited to
These three random mode regions of the J in the I or Figure 10 in C, Figure 10 in Fig. 9, any other random mode mode region also accords with
The requirement of the utility model is closed, 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 Figure 10 in Figure 10
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 Figure 10 in Figure 10
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 9 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 10.
A kind of design of the kitchen ventilator with multi-frequency noise filtering device:
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=2mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b=23mm of adjacent through-holes 111,
H12.5mm。
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, 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.
Embodiment 11.
A kind of design of the kitchen ventilator with multi-frequency noise filtering device:
Target frequency 1:8000Hz.
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.
Target frequency 2:100Hz.
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.
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, table is not for the utility model
It can only be directed to the noise of two kinds of frequencies, only corresponding different parameter, the utility model can eliminate the noise of multi-frequency, reach wide
Band frequency noise reduction purpose.
Finally it should be noted that above embodiments are only to illustrate the technical solution of the utility model rather than to this is practical
The limitation of novel protected range, although being explained in detail referring to preferred embodiment to the utility model, the common skill of this field
Art personnel, which should be appreciated that, can be modified or replaced equivalently technical solutions of the utility model, practical new without departing from this
The spirit and scope of type technical solution.
Claims (10)
1. a kind of kitchen ventilator with multi-frequency noise filtering device, it is characterised in that: it is provided with smoke machine main body and can eliminate more
The noise filtering device of frequency noise, noise filtering device are 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.
2. the kitchen ventilator according to claim 1 with multi-frequency noise filtering device, it is characterised in that: by adjusting difference
Edge minimum range, the distribution of the via regions of panel or the noise filtering in the aperture of through-hole, the edge of through-hole and adjacent through-holes
Device reaches multi-frequency noise noise reduction at a distance from smoke machine main body.
3. the kitchen ventilator according to claim 2 with multi-frequency noise filtering device, it is characterised in that: the panel setting
There are multiple regions, multiple through-holes are by area distribution in corresponding positions of panels.
4. the kitchen ventilator according to claim 3 with multi-frequency noise filtering device, it is characterised in that: the region is a left side
Right symmetrical expression region, formula region symmetrical above and below or asymmetric formula region.
5. the kitchen ventilator according to claim 3 with multi-frequency noise filtering device, it is characterised in that: the region is hair
Particulate region, spiral region, wave region, winding type region or the random mode region for removing above-mentioned zone.
6. the kitchen ventilator according to claim 4 or 5 with multi-frequency noise filtering device, it is characterised in that: the through-hole
Aperture be defined as d, and d≤30mm；
The value of the d is multiple.
7. the kitchen ventilator according to claim 6 with multi-frequency noise filtering device, it is characterised in that: the side of the through-hole
Minimum range between edge 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 according to claim 7 with multi-frequency noise filtering device, it is characterised in that: the panel is non-
Flat panel；
Difference in height between the horizontal highest point and horizontal bottom position of the panel is defined as Δ h, and Δ h≤100mm；
The panel is mutation formula panel or gradual change type panel.
9. the kitchen ventilator according to claim 7 with multi-frequency noise filtering device, it is characterised in that: the panel is flat
Faceplate panels.
10. the kitchen ventilator with multi-frequency noise filtering device according to claim 8 or claim 9, it is characterised in that: panel setting
It is multiple；
Multiple panel-mounteds are at continuous limited encirclement structural body or discontinuous limited encirclement structural body；
There are gaps between 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；
The 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；
The sound-absorbing part is fiber, PP cotton, polyester fiber, Carbon fibe or porous foam；Or
The sound-absorbing part is porous plate；
Panel is metal decking, plastic front board or alloy panel；
Panel is connected with reinforced structure；
The reinforced structure is convex closure, recessed packet or reinforcing rib；
It is 100Hz~8000Hz that noise filtering device, which eliminates noisy frequency range,.
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| CN201821124397.5U CN208566809U (en) | 2018-07-14 | 2018-07-14 | A kind of kitchen ventilator with multi-frequency noise filtering device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731076A (en) * | 2018-07-14 | 2018-11-02 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator with multi-frequency noise filtering device |
| CN111706433A (en) * | 2020-05-11 | 2020-09-25 | 中国航发沈阳发动机研究所 | Sound lining combined structure |
-
2018
- 2018-07-14 CN CN201821124397.5U patent/CN208566809U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731076A (en) * | 2018-07-14 | 2018-11-02 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator with multi-frequency noise filtering device |
| CN111706433A (en) * | 2020-05-11 | 2020-09-25 | 中国航发沈阳发动机研究所 | Sound lining combined structure |
| CN111706433B (en) * | 2020-05-11 | 2022-02-22 | 中国航发沈阳发动机研究所 | Sound lining combined structure |
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