CN108954429A - A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency - Google Patents
A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency Download PDFInfo
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- CN108954429A CN108954429A CN201810772821.5A CN201810772821A CN108954429A CN 108954429 A CN108954429 A CN 108954429A CN 201810772821 A CN201810772821 A CN 201810772821A CN 108954429 A CN108954429 A CN 108954429A
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- panel
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- noise filtering
- noise
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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
- F24C15/2021—Arrangement or mounting of control or safety systems
Abstract
A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency is provided with smoke machine main body and can reduce the non-planar noise filtering device of multi-frequency noise, and non-planar noise filtering device is assemblied in smoke machine main body.The edge minimum range in the aperture of different through-holes and the edge of through-hole and adjacent through-holes of the invention, is reduced the noise of different target frequency, to can achieve wideband frequency noise reduction purpose by the division in faceplate through holes region, arrangement and arrangement.The non-planar 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 non-planar noise filtering device has low cost, reliability high.The material of the non-planar noise filtering device is anticorrosive, chemical resistance and is hardly damaged.Narrow frequency noise and broadband noise is effectively reduced, noise reduction frequency range is big, can reduce the noise of multiple frequencies.
Description
Technical field
The present invention relates to kitchen ventilator field, in particular to a kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency.
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 also get 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, for greater than 1000Hz noise can only pass through by
Dynamic noise reduction technology processing.And the passive denoising device of the prior art can only be handled for the noise of single-frequency section, no
Noise reduction can be carried out to the noise of multiband.Since the noisy frequency range that kitchen ventilator generates can be 100Hz~8000Hz, show
So good noise reduction effect can not be generated for kitchen ventilator for the passive denoising device of single-frequency section in the prior art.
Therefore in view of the shortcomings of the prior art, providing a kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency to solve
Certainly prior art deficiency is very necessary.
Summary of the invention
A kind of non-planar noise mistake of band multi-frequency is provided it is an object of the invention to avoid the deficiencies in the prior art place
Filter the kitchen ventilator of device.The kitchen ventilator with the non-planar noise filtering device of multi-frequency have can reduce the excellent of multi-frequency noise
Point.
Above-mentioned purpose of the invention is realized by following technical measures:
A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency is provided, smoke machine main body is provided with and can be reduced more
The non-planar noise filtering device of frequency noise, non-planar noise filtering device are assemblied in smoke machine main body.
Preferably, above-mentioned non-planar noise filtering device is set as being distributed multiple panels for offset noise through-hole.
Preferably, there are two or more for the minimum range of the wall surface at the center and smoke machine main body of above-mentioned multiple through-holes
Value.
Preferably, above-mentioned panel is non-planar panel.
Preferably, the horizontal highest point of above-mentioned panel and horizontal bottom position difference in height are 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 provided with multiple.
Preferably, above-mentioned multiple panel-mounteds are at continuous limited encirclement structural body or discontinuous limited encirclement structure
Body.
Another preferred, above-mentioned panel is flat panel.
Preferably, above-mentioned panel is provided with multiple；
Preferably, above-mentioned multiple panel-mounteds are at non-planar continuous limited encirclement structural body or discontinuous limited packet
Closed structure body.
Preferably, the aperture of above-mentioned through-hole is defined as d, and d≤30mm.
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, the value of above-mentioned b is multiple.
Preferably, the value of above-mentioned d 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 non-planar noise filtering device reach multi-frequency noise noise reduction at a distance from smoke machine main 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 non-planar 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 fibe or porous foam；Or
The sound-absorbing part is porous plate.
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；Or
The region is divergence expression region, spiral region, wave region, winding type region or removes above-mentioned area
The random mode region in domain.
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 at least one of rectilinear through-hole or bevel edge through-hole.
Panel is metal decking, plastic front board or alloy panel.
Panel is connected with reinforced structure.
Preferably, above-mentioned reinforced structure is convex closure, recessed packet or reinforcing rib.
A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency of the invention is provided with smoke machine main body and can drop
The non-planar noise filtering device of low multi-frequency noise, non-planar noise filtering device are assemblied in smoke machine main body.It is described non-planar
Noise filtering device is set as being distributed multiple panels for offset noise through-hole；The center of the multiple through-hole and smoke machine master
There are two or more values for the minimum range of the wall surface of body.Denoising device in the prior art can only be directed to single-frequency section
Noise reduction.A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency of the invention by adjusting different through-holes aperture, logical
The edge minimum range of the edge in hole and adjacent through-holes, the distribution of the via regions of panel or non-planar noise filtering device with
The distance of smoke machine main body achievees the purpose that multi-frequency noise noise reduction.The non-planar 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.This is non-planar to make an uproar
Sound filter device has the advantages that low cost, reliability are high.The material of the non-planar 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
Using attached drawing, the present invention is further illustrated, but the content in attached drawing is not constituted to any limit of the invention
System.
Fig. 1 is a kind of structural representation of kitchen ventilator embodiment 1 with the non-planar noise filtering device of multi-frequency of the invention
Figure.
Fig. 2 is the panel schematic diagram in Fig. 1, and the A in Fig. 2 is main view, and the B in Fig. 2 is top view.
Fig. 3 is mutation formula panel construction schematic diagram of the invention, and (1) A in Fig. 3 is main view, and (1) B in Fig. 3 is
The top view of (1) A in Fig. 3, (2) A in Fig. 3 are main view, the top view that (2) B in Fig. 3 is (2) A in Fig. 3.
Fig. 4 is gradual change type panel construction schematic diagram of the invention, and (1) A in Fig. 4 is the main view of gradual change type panel, figure
(1) B in 4 is the top view of (1) A in Fig. 4, and (2) A in Fig. 4 is the main view of gradual change type panel, and (2) B in Fig. 4 is
The top view of (2) A in Fig. 4, (3) A in Fig. 4 are the main view of gradual change type panel, and (3) B in Fig. 4 is (3) in Fig. 4
The top view of A.
Fig. 5 is the structural schematic diagram of the non-planar noise filtering device of embodiment 2.
Fig. 6 is the schematic diagram in the aperture of embodiment 3 and the center of through-hole.
Fig. 7 is a kind of structural schematic diagram of kitchen ventilator embodiment 4 with the non-planar noise filtering device of multi-frequency.
Fig. 8 is the panel construction schematic diagram of embodiment 5.
Fig. 9 is the panel construction schematic diagram of embodiment 6.
Figure 10 is through-hole different zones distribution mode, and the B in A and Figure 10 in Figure 10 is bilateral symmetry formula region, Figure 10
In C and Figure 10 in D be formula region symmetrical above and below, the F in E and Figure 10 in Figure 10 is asymmetric formula region.
Figure 11 is rectilinear through-hole schematic cross-section.
Figure 12 is bevel edge through hole section schematic diagram.
Figure 13 is the structural schematic diagram of the non-planar noise filtering device of embodiment 8.
Figure 14 is the panel construction schematic diagram of the embodiment of the present invention 9.
Figure 15 is through-hole different zones distribution mode, and the B in A and Figure 15 in Figure 15 is divergence expression region, in Figure 15
D in C and Figure 15 is spiral region, and the F in E and Figure 15 in Figure 15 is wave region, in the G and Figure 15 in Figure 15
H be winding type region, the J in I and Figure 15 in Figure 15 is random mode region.
Fig. 1 includes into Figure 15:
Non-planar noise filtering device 1, panel 11, through-hole 111, reinforced structure 112, sound-absorbing part 12,
Smoke machine main body 2.
Specific embodiment
Technical solution of the present invention is described further with the following Examples.
Embodiment 1.
A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency is provided with smoke machine main body as shown in Figures 1 to 4
2 and the non-planar noise filtering device 1 of multi-frequency noise can be reduced, non-planar noise filtering device 1 is assemblied in smoke machine main body 2.
Non-planar noise filtering device 1 is set as being distributed multiple panels 11 for offset noise through-hole 111.It is multiple logical
There are two or more values for the minimum range of the wall surface at the center and smoke machine main body 2 in hole 11.
The panel 11 of the present embodiment is non-planar panel 11.The horizontal highest point of panel 11 and horizontal bottom position difference in height
Be defined as Δ h, and Δ h≤100mm, the tool Δ h=50mm. of the present embodiment it should be noted that, Δ h can appointing less than 100mm
Meaning positive number, the tool Δ h=50mm of the present embodiment.The Δ h=50mm of the present embodiment be supported according to experimental data because
This numerical value is preferable to wideband frequency noise reduction.
The non-planar panel 11 of the present embodiment is specially that mutation formula panel 11 is as shown in Figure 2.
Mutation formula panel 11 of the invention is not limited to be mutated formula as shown in (2) B in (1) B and Fig. 3 in Fig. 2, Fig. 3
Panel 11, any other mutation formula 11 modes of panel are also within the scope of the present invention.Gradual change type panel 11 of the invention
Be not limited to the gradual change type panel 11 as shown in (3) B in (2) B and Fig. 4 in (1) B, Fig. 4 in Fig. 4, it is any other gradually
11 mode of variant panel is also within the scope of the present invention.
Denoising device principle of the invention: non-planar noise filtering device 1 can make an uproar in limited closed space
When sound source travels to non-planar noise filtering device 1, noise reduction is carried out.Sound wave is usually touching non-planar noise filtering device 1
It is propagated with opposite direction, so most incidence wave can be interfered with back wave.In the fixed distance of characteristic about noise source wavelength
A quarter away from degree at, the speed of particle reaches highest, because the present invention 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 the noise reduction of multi-frequency noise.
Non-planar noise filtering device 1 using resonance principle carry out noise reduction, when the edge of aperture d and through-hole 111 with
After the edge minimum range b of adjacent through-holes 111 is determined, specific noise frequency and target frequency is already provided in space
Non-planar noise filtering device 1 forms covibration.
When resonance occurs, the sound wave of oscillation can intensely pierce into out through-hole 111, the sound energy of noise back and forth in air
It is converted to friction loss in the process, achievees the effect that eliminate target frequency noise.
The kitchen ventilator with the non-planar noise filtering device of multi-frequency is provided with smoke machine main body 2 and can reduce multi-frequency and makes an uproar
The non-planar noise filtering device 1 of sound, non-planar noise filtering device 1 are assemblied in smoke machine main body 2.Noise reduction in the prior art
Device can only be directed to single target frequency noise reduction.The non-planar noise filtering device 1 is able to maintain long-term good noise reduction effect
Fruit, the non-planar noise filtering device 1 have the advantages that be easy to arrange, and dust, the grease on surface etc. can be clear by dismantling
Reason.The non-planar noise filtering device 1 has the advantages that low cost, reliability are high simultaneously.The non-planar noise filtering device 1
Material be anticorrosive, chemical resistance and to be hardly damaged.It can be effectively reduced narrow frequency noise and broadband noise, noise reduction frequency model
Width is enclosed, the noise of multiple frequencies can be reduced.
Embodiment 2.
A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency, as shown in figure 5, other features and 1 phase of embodiment
Together, the difference is that, the panel 11 of the present embodiment is flat panel 11.Panel 11 be provided with it is multiple, specially three.Three
A panel 11 is assembled into continuous limited encirclement structural body.
It should be noted that panel 11 of the invention can be set there are two or above any positive integer, and it is multiple
Panel 11 is assembled 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 that noise source can be placed in the center of structural body, made non-flat
Face noise filtering device 1 fills noise source and surrounds to the greatest extent, to reach maximum drop effect.
Embodiment 3.
A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency, as shown in fig. 6, other features and 1 phase of embodiment
Together, the difference is that, the aperture of the through-hole 111 of the present embodiment is defined as d, and d≤30mm.The edge of through-hole 111 with it is adjacent
The edge minimum range of through-hole 111 is b, and b is the arbitrary value greater than 0.The value of the d and b of the present embodiment are all multiple.
The present invention in the constant situation of aperture d, the edge minimum range b's at the edge and adjacent through-holes 111 of through-hole 111
The target noise frequency for being worth smaller elimination is bigger.Through-hole 111 edge and adjacent through-holes 111 edge minimum range b not
In the case of change, the smaller target noise frequency to be eliminated of the value of aperture d is with regard to smaller.
A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency of the invention can be by adjusting different through-holes
Edge minimum range, 111 area distribution of through-hole of panel 11 in 111 aperture and the edge of through-hole 111 and adjacent through-holes 111
Or non-planar noise filtering device 1 is reduced the noise of different target frequency at a distance from smoke machine main body 2, to pass through
Division, arrangement and the arrangement in 11 through-hole of panel, 111 region can achieve wideband frequency noise reduction purpose.
Embodiment 4.
A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency, as shown in fig. 7, other features and 1 phase of embodiment
Together, the difference is that, the present invention is minimum by adjusting the edge in the aperture of different through-holes, the edge of through-hole and adjacent through-holes
Distance or the distribution of the via regions of panel achieve the purpose that multi-frequency noise noise reduction.
There are gaps between the panel 11 and the immediate wall surface of smoke machine main body 2 of the present embodiment, by the distance definition in gap
For H1.Non-planar 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
It 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 sound-absorbing part 12 of the invention
Panel 11 and smoke machine main body 2 are fixed in the surface or sound-absorbing part 12 that panel 11 and the nearest wall surface of smoke machine main body 2 can be fixed on
Between nearest wall surface gap, 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
The through-hole 111 of filter device.Therefore sound-absorbing part 12 of the invention is preferably fiber, PP cotton, polyester fiber, Carbon fibe or more
Hole 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, reinforces
Noise reduction effect.
Embodiment 5.
A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency, as shown in figure 8, other features and 1 phase of embodiment
Together, the difference is that, the panel 11 of the present embodiment is specially metal decking 11, it should be noted that panel 11 of the invention
It can 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 should be noted that reinforced structure 112 of the invention or convex closure or recessed packet, or a variety of any
Combination, depending on specific embodiment is 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
Incidence 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,
To reduce the intensity of noise.The panel 11 of the metal of the present embodiment has the advantages that high temperature resistant, durable.
Embodiment 6.
A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency, as shown in figure 9, other features and 1 phase of embodiment
Together, the difference is that, panel 11 of the present invention is provided with multiple regions, and multiple through-holes 111 are by area distribution in corresponding panel
11 positions.Region of the invention can be divided into bilateral symmetry formula region, formula region symmetrical above and below or asymmetric formula region.Tool
Body, the through-hole 111 of the present embodiment panel 11 by bilateral symmetry formula region such as the a-quadrant in Fig. 9, formula region symmetrical above and below such as
The various forms of area distributions in three kinds of the region C and D in B area and asymmetric formula region such as Fig. 9 in Fig. 9 are in panel 11.
The bilateral symmetry formula region of the present embodiment, as shown in the A in Fig. 9.It should be noted that the left and right pair in the present invention
The B in A or Figure 10 that formula region is not limited in A, Figure 10 in Fig. 9 is referred to as the region of 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 present invention, also of the invention
In protection scope.
The formula region symmetrical above and below of the present embodiment, as shown in the B in Fig. 9.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 Figure 10 in B, Figure 10 in Fig. 9, other
The region for formula mode symmetrical above and below of anticipating also meets the requirement in present invention formula region symmetrical above and below, also in protection scope of the present invention
It is interior.
The asymmetric formula region of the present embodiment, as shown in the D in the C and Fig. 9 in Fig. 9.It should be noted that in the present invention
Asymmetric formula region is not limited to these four asymmetric formulas of the E in D, Figure 10 in C, Fig. 9 in Fig. 9 or F in Figure 10
The region of mode, the region of any other asymmetry formula mode also meets the requirement in asymmetric formula region of the invention, also at this
In the protection scope of invention.
It should be noted that the through-hole 111 of panel 11 of the invention is not limited to the left and right as shown in Figure 9 of the present embodiment
The distribution mode in symmetrical region, formula region symmetrical above and below and asymmetric formula region, or bilateral symmetry formula region, on
The multiple arrangements of any one in lower symmetrical expression region 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 by region by the effect that multiple regions are distributed
The frequency of the target noise of required elimination.
Embodiment 7.
A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency, as shown in Figure 11 to Figure 12, other features and reality
It is identical to apply example 1, the difference is that, through-hole 111 of the invention it is conveniently of circular shape because round in technique production
Relatively easily, 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
Circle, triangle, square, rectangle, pentagon, hexagon, diamond shape or irregular shape, or above-mentioned a variety of
The combination of the shape of through-hole 111, depending on specific embodiment is with actual conditions.
The through-hole 111 of the present embodiment is preferably rectilinear through-hole 111, as shown in figure 11, it should be noted that through-hole of the invention
111 may be bevel edge through-hole 111, as shown in figure 12, or combinations of the above, specific embodiment is with practical feelings
Depending on condition.
Non-planar make an uproar can be improved in the diversity choice of the shape of the distribution mode and through-hole 111 of the through-hole 111 of the present embodiment
The flexibility ratio that sound filter device 1 designs.
Embodiment 8.
A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency, as shown in figure 13, other features and embodiment 1
It is identical, the difference is that, there are two the settings of panel 11, and the specific panel 11 is gradual change type panel 11, two gradual change type faces
Plate 11 is assembled into discontinuous limited encirclement structural body.
It should be noted that panel 11 of the invention can be set there are two or above any positive integer, and it is multiple
Panel 11 is assembled into discontinuous limited encirclement structural body, while panel 11 can be gradual change type panel 11, or mutation
Formula panel 11 or gradual change type panel 11, depending on specific embodiment is with actual conditions.
The present embodiment compared with Example 1 the advantages of be that noise source can be placed in the center of structural body, made non-flat
Noise source inside face noise filtering device 1 can be surrounded to the greatest extent, to reach maximum drop effect.Simultaneously should
Gradual change type panel 11 is able to cooperate the shape of the inside of smoke machine main body 2.
Embodiment 9.
A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency, as shown in figure 14, other features and embodiment 6
It is identical, the difference is that, the region of the present embodiment can be divided into divergence expression region, spiral region, wave region, circuitous
It goes back to formula region or removes 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 Figure 14 in the spiral region of through-hole 111 of the present embodiment panel 11 such as Figure 14, divergence expression area
Domain such as the region D in Figure 14 and tri- kinds of various forms of area distributions of the C in random mode region such as Figure 14 are in panel 11.
The divergence expression region of the present embodiment, as shown in the D in Figure 14.It should be noted that the divergence expression region in the present invention
It is not limited to these three divergence expression regions of the B in the A or Figure 15 in D, Figure 15 in Figure 14, any other divergence expression side
Formula region also complies with the requirement in divergence expression region of the present invention, also within the scope of the present invention.
The spiral region of the present embodiment, as shown in the B in the A and Figure 14 in Figure 14, it should be noted that, in the present invention
Spiral region be not limited to the C in B, Figure 15 in A, Figure 14 in Figure 14 or D in Figure 15 these four are spiral
Region, any other spiraling manner region also comply with requirement of the invention, also within the scope of the present invention.
The random mode region of the present embodiment, as shown in the C in Figure 14, the random mode region in the present invention is not limited to figure
These three random mode regions of the J in the I or Figure 15 in C, Figure 15 in 14, any other random mode mode region also accords with
Requirement of the invention is closed, 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 Figure 15 in Figure 15,
Any other wave mode region also complies with requirement of the 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 Figure 15 in Figure 15,
Any other winding type mode region also complies with requirement of the invention, also within the scope of the present invention.
It should be noted that the through-hole 111 of panel 11 of the invention is not limited to the hair as shown in fig. 13 that of the present embodiment
Particulate region, random mode region and spiral region distribution mode, or divergence expression region, spiral region, wave
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 basis
Depending on actual conditions.
The present embodiment compared with Example 6, can increase the diversity in region.
Embodiment 8.
A kind of design of the kitchen ventilator with the non-planar noise filtering device of multi-frequency:
Target frequency 1:7000Hz.
The aperture d=10mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b=of adjacent through-holes 111
23mm,H1=2.6mm.
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,
H1=2.5mm.
Therefore the non-planar noise filtering device 1 of the kitchen ventilator is only with the corresponding through-hole of above-mentioned two target frequency
111 characteristic 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 can not only for the present invention
For the noise of two kinds of frequencies, 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 with the non-planar noise filtering device of multi-frequency:
Target frequency 1:8000Hz.
The aperture d=10mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b=of adjacent through-holes 111
23mm,H1=2.5mm.
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 non-planar noise filtering device 1 of the kitchen ventilator is only with the corresponding through-hole of above-mentioned two target frequency
111 characteristic 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 can not only for the present invention
For the noise of two kinds of frequencies, 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 protects to the present invention
The limitation of range is protected, although the invention is described in detail with reference to the preferred embodiments, those skilled in the art should
Understand, it can be with modifying or equivalently replacing the technical solution of the present invention, without departing from the essence of technical solution of the present invention
And range.
Claims (10)
1. a kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency, it is characterised in that: it is provided with smoke machine main body and can drop
The non-planar noise filtering device of low multi-frequency noise, non-planar noise filtering device are assemblied in smoke machine main body.
2. a kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency according to claim 1, it is characterised in that: institute
Non-planar noise filtering device is stated to be set as being distributed multiple panels for offset noise through-hole；
There are two or more values for the minimum range of the wall surface at the center and smoke machine main body of the multiple through-hole.
3. a kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency according to claim 2, it is characterised in that: institute
Stating panel is non-planar panel；
The horizontal highest point of the panel and horizontal bottom position difference in height are defined as Δ h, and Δ h≤100mm.
4. a kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency according to claim 3, it is characterised in that: institute
Stating panel is mutation formula panel or gradual change type panel.
5. a kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency according to claim 4, it is characterised in that: institute
State panel be provided with it is multiple；
The multiple panel-mounted is at continuous limited encirclement structural body or discontinuous limited encirclement structural body.
6. a kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency according to claim 2, it is characterised in that: institute
Stating panel is flat panel；
The panel is provided with multiple；
The multiple panel-mounted is at non-planar continuous limited encirclement structural body or discontinuous limited encirclement structural body.
7. a kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency according to claim 2 to 6 any one,
Be characterized in that: the aperture of the through-hole is defined as d, and d≤30mm；
The edge of the through-hole and the edge minimum range of adjacent through-holes are b, and b is the arbitrary value greater than 0.
8. a kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency according to claim 7, it is characterised in that: institute
It is multiple for stating the value of b；
The value of the d is multiple.
9. a kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency according to claim 7 or 8, feature exist
In: edge minimum range, the via regions of panel point by adjusting the aperture of different through-holes, the edge of through-hole and adjacent through-holes
Cloth or non-planar noise filtering device reach multi-frequency noise noise reduction at a distance from smoke machine main 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 non-planar 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.
10. a kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency according to claim 9, it is characterised in that:
The panel is provided with multiple regions, and multiple through-holes are by area distribution in corresponding positions of panels；
The region is bilateral symmetry formula region, formula region symmetrical above and below or asymmetric formula region；Or
The region be divergence expression region, spiral region, wave region, winding type region or remove above-mentioned zone with
Machine formula region；
The shape of the through-hole is circle, ellipse, triangle, square, rectangle, pentagon, hexagon, diamond shape or not
At least one of regular shape；
The through-hole is at least one of rectilinear through-hole or bevel edge through-hole；
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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810772821.5A CN108954429A (en) | 2018-07-14 | 2018-07-14 | A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810772821.5A CN108954429A (en) | 2018-07-14 | 2018-07-14 | A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency |
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| Publication Number | Publication Date |
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| CN108954429A true CN108954429A (en) | 2018-12-07 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810772821.5A Pending CN108954429A (en) | 2018-07-14 | 2018-07-14 | A kind of kitchen ventilator with the non-planar noise filtering device of multi-frequency |
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| CN (1) | CN108954429A (en) |
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| CN113753134A (en) * | 2021-09-16 | 2021-12-07 | 东风柳州汽车有限公司 | Engine timing cover, engine and automobile |
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Application publication date: 20181207 |