CN108954430A - A kind of kitchen ventilator with multi-frequency plane noise filter device - Google Patents
A kind of kitchen ventilator with multi-frequency plane noise filter device Download PDFInfo
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- CN108954430A CN108954430A CN201810772822.XA CN201810772822A CN108954430A CN 108954430 A CN108954430 A CN 108954430A CN 201810772822 A CN201810772822 A CN 201810772822A CN 108954430 A CN108954430 A CN 108954430A
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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
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- Chemical & Material Sciences (AREA)
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- General Engineering & Computer Science (AREA)
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
A kind of kitchen ventilator with multi-frequency plane noise filter device is provided with smoke machine main body and can reduce the plane noise filter device of multi-frequency noise, and plane noise filter device is assemblied in smoke machine main body.A kind of kitchen ventilator with multi-frequency plane noise filter device of the invention can reach multi-frequency noise noise reduction at a distance from the edge minimum range of adjacent through-holes, the through-hole distribution of panel or plane noise filter device and smoke machine main body by adjusting the aperture of different through-holes, the edge of through-hole.The plane noise filter 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 plane noise filter device has the advantages that low cost, reliability are high.
Description
Technical field
The present invention relates to kitchen ventilator field, in particular to a kind of kitchen ventilator with multi-frequency plane noise filter 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 plane noise filter device existing to solve
There is technical deficiency very necessary.
Summary of the invention
A kind of band multi-frequency plane noise filtering is provided it is an object of the invention to avoid the deficiencies in the prior art place
The kitchen ventilator of device.The kitchen ventilator with multi-frequency plane noise filter device has the advantages that multi-frequency noise can be reduced.
Above-mentioned purpose of the invention is realized by following technical measures:
A kind of kitchen ventilator with multi-frequency plane noise filter device is provided, smoke machine main body is provided with and multi-frequency can be reduced
The plane noise filter device of noise, plane noise filter device are assemblied in smoke machine main body.
Preferably, above-mentioned plane noise filter device is set as being distributed with multiple for offsetting different frequency noise through-hole
Planar panel.
Preferably, the aperture of above-mentioned through-hole is defined as d, and d≤30mm.
It is further preferred that the value of above-mentioned d is multiple.
Preferably, the 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.
It is further preferred that the value of above-mentioned b is multiple.
It is further preferred that above-mentioned through-hole planar panel distribution mode be formula symmetrical above and below, bilateral symmetry formula or
Asymmetric formula；Or
The through-hole is divergence expression, spiral, wave, winding type or in addition to above-mentioned in planar panel distribution mode
The random mode of four kinds of modes.
It is further preferred that the shape of above-mentioned through-hole be circle, ellipse, triangle, square, rectangle, pentagon,
At least one of hexagon, diamond shape or irregular shape.
It is further preferred that above-mentioned through-hole is at least one of rectilinear through-hole or bevel edge through-hole.
It is further preferred that above-mentioned planar panel be provided with it is multiple.
Multiple planar panels, which are staggered, is assemblied in smoke machine body interior.
The through-hole of each planar panel and the through-hole of adjacent flat planar panel are all in mutually stagger setting.
It is further preferred that above-mentioned planar panel be provided with it is multiple.
Multiple planar panels in alignment are assemblied in smoke machine body interior.
The through-hole of each planar panel and the through-hole of adjacent flat planar panel are all mutually aligned.
Preferably, there are gaps between above-mentioned planar panel and the immediate wall surface of smoke machine main body, by the distance in gap
It is defined as H1。
Preferably, above-mentioned plane noise filter device is additionally provided with sound-absorbing part, and sound-absorbing part assembles smoke machine main body.
It is further preferred that the thickness of above-mentioned sound-absorbing part is defined as H2, and H2≤0.6H1。
The sound-absorbing part is fixed on the outer surface of planar panel；Or
The sound-absorbing part is fixed on the surface of planar panel Yu the nearest wall surface of smoke machine main body；Or
The sound-absorbing part is fixed between planar 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.
It is further preferred that above-mentioned planar panel is that metal flat shape panel, Plastic Flat planar panel or alloy are flat
Planar panel.
It is further preferred that above-mentioned planar panel is fixedly connected with reinforced structure.
It is further preferred that above-mentioned reinforced structure is convex closure, recessed packet or reinforcing rib.
Preferably, the thickness of above-mentioned planar panel is less than 20mm.
By adjusting the edge minimum range in the aperture of different through-holes, the edge of through-hole and adjacent through-holes, the through-hole of panel
Distribution or plane noise filter device reach multi-frequency noise noise reduction at a distance from smoke machine main body.
A kind of kitchen ventilator with multi-frequency plane noise filter device of the invention is provided with smoke machine main body and can reduce more
The plane noise filter device of frequency noise, plane noise filter device are assemblied in smoke machine main body.Noise reduction dress in the prior art
It sets, single target frequency noise reduction can only be directed to.A kind of oil smoke function with multi-frequency plane noise filter device of the invention
The through-hole distribution of enough logical edge minimum ranges, panel by adjusting the aperture of different through-holes, the edge of through-hole and adjacent through-holes
Or plane noise filter device achievees the purpose that multi-frequency noise noise reduction at a distance from smoke machine main body, to pass through planar face
Division, arrangement and the arrangement of plate via regions can achieve wideband frequency noise reduction purpose.The plane noise filter device is able to maintain
Long-term good noise reduction effect, the plane noise filter device have the advantages that be easy to arrange, and dust, the grease on surface etc. can lead to
It crosses and removes cleaning.The plane noise filter device has the advantages that low cost, reliability are high.The material of the plane noise filter device
Material is anticorrosive, chemical resistance and is hardly damaged.It can be effectively reduced narrow frequency noise and broadband noise, noise reduction wide frequency range,
The noise of multiple frequencies can be reduced.
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 range hood structure schematic diagram with multi-frequency plane noise filter device of the invention.
Fig. 2 is the planar panel schematic diagram in Fig. 1.
Fig. 3 is through-hole different distributions mode, and the B in A and Fig. 2 in Fig. 2 is bilateral symmetry formula, in the C and Fig. 3 in Fig. 3
D be formula symmetrical above and below, the F in E and Fig. 3 in Fig. 3 is asymmetric formula.
Fig. 4 is rectilinear through-hole schematic cross-section.
Fig. 5 is bevel edge through hole section schematic diagram.
Fig. 6 is the noise filtering device perspective view of embodiment 2.
Fig. 7 is the schematic cross-section of Fig. 6.
Fig. 8 is the noise filtering device perspective view of embodiment 3.
Fig. 9 is the schematic cross-section of Fig. 8.
Figure 10 is the planar panel schematic diagram of embodiment 5.
Figure 11 is the kitchen ventilator schematic diagram with multi-frequency plane noise filter device of embodiment 6.
Figure 12 is the panel construction schematic diagram of the embodiment of the present invention 7.
Figure 13 is through-hole different distributions mode, and the B in A and Figure 13 in Figure 13 is divergence expression, in the C and Figure 13 in Figure 13
D be it is spiral, the F in E and Figure 13 in Figure 13 is wave, and the H in G and Figure 13 in Figure 13 is winding type, Tu13Zhong
I and Figure 13 in J be random mode.
Fig. 1 includes into Figure 13:
Plane noise filter device 1,
Planar 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 multi-frequency plane noise filter device is provided with smoke machine main body 2 and energy as shown in Figs. 1-5
The plane noise filter device 1 of multi-frequency noise is reduced, plane noise filter device 1 is assemblied in smoke machine main body 2.
Plane noise filter device 1 is set as being distributed with multiple for offsetting the planar of different frequency noise through-hole 111
Panel 11.
The aperture of through-hole 111 of the invention is defined as d, and d≤30mm；Wherein the value of d is multiple.
The edge of through-hole 111 of the invention and the edge minimum range of adjacent through-holes 111 are b, and b is the arbitrary value greater than 0,
Wherein the value of b is multiple.
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.
Through-hole 111 can be divided into bilateral symmetry formula, formula symmetrical above and below or asymmetry in planar 11 distribution mode of panel
Formula.Specifically, the present embodiment faceplate through holes 111 are pressed in asymmetric formula such as Fig. 2.
It is both bilateral symmetry formula sides that bilateral symmetry formula in the present invention, which is not limited to the B in the A or Fig. 3 in Fig. 3,
Formula, any other bilateral symmetry formula mode also meets the requirement of bilateral symmetry formula in the present invention, also in protection scope of the present invention
It is interior.
Formula symmetrical above and below in the present invention is not limited to both formula modes symmetrical above and below of the D in the C or Fig. 3 in Fig. 3,
Any other formula mode symmetrical above and below also meets the requirement of present invention formula symmetrical above and below, also within the scope of the present invention.
The asymmetric formula of the present embodiment, as shown in Figure 2.It should be noted that the asymmetric formula in the present invention be not limited to Fig. 2,
These three asymmetric formula modes of the F in E or Fig. 3 in Fig. 3, it is not right that any other asymmetry formula mode also meets the present invention
The requirement of title formula, also within the scope of the present invention.
It should be noted that the through-hole 111 of planar panel 11 of the invention is not limited to the as shown in Figure 2 of the present embodiment
Asymmetric formula distribution mode, or in bilateral symmetry formula, formula symmetrical above and below or asymmetric formula any one
One or more arrangement, can also above one or more arrangements in two ways, or more than two ways one
Or multiple arrangements, depending on specific performance is with actual conditions.
Through-hole 111 of the invention it is conveniently of circular shape because round upper relatively easy in technique production, and because not having
The interference of corner angle, noise reduction effect are optimal.It should be noted that the shape of through-hole 111 may be ellipse, triangle, square,
Rectangle, pentagon, hexagon, diamond shape or irregular shape, or the combination of above-mentioned various shapes, it is specific to implement
Depending on mode is with actual conditions.
The through-hole 111 of the present embodiment is preferably rectilinear through-hole 111, as shown in figure 4, it should be noted that through-hole of the invention
111 may be bevel edge through-hole 111, as shown in Figure 5, or combinations of the above, specific embodiment is with actual conditions
Depending on.
The present invention is minimum by adjusting the edge in the aperture of different through-holes 111, the edge of through-hole 111 and adjacent through-holes 111
Distance, the distribution of through-hole 111 of panel or plane noise filter device 1 reach multi-frequency noise drop at a distance from smoke machine main body 2
It makes an uproar.
Denoising device principle of the invention: plane noise filter device 1 can be in limited closed space, in noise source
When traveling to plane noise filter device 1, noise reduction is carried out.Sound wave is usually touching plane noise filter device 1 with opposite direction
It propagates, so most incidence wave can be interfered with back wave.
Plane noise filter device 1 be 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, in space specific noise frequency be already provided with the flat of target frequency
Face noise filtering device 1 forms covibration.When resonance occurs, the sound wave of oscillation can be pierced into intensely back and forth in air
The sound of through-hole 111 out, noise can be converted to friction loss in the process, reach and eliminate target frequency noise.
The kitchen ventilator with multi-frequency plane noise filter device is provided with smoke machine main body 2 and can reduce multi-frequency noise
Plane noise filter device 1, plane noise filter device 1 is assemblied in smoke machine main body 2.Denoising device in the prior art, only
Single target frequency noise reduction can be directed to.A kind of kitchen ventilator with multi-frequency plane noise filter device of the invention can pass through
The edge minimum range for adjusting the aperture of different through-holes 111 and the edge of through-hole 111 and adjacent through-holes 111, to reduce difference
The purpose of the noise of target frequency, to pass through division, arrangement and the arrangement or plane in planar 11 through-hole of panel, 111 region
The minimum range of noise filtering device 1 and smoke machine main body 2 can achieve wideband frequency noise reduction purpose.The plane noise filter device
1 is able to maintain long-term good noise reduction effect, which has the advantages that be easy to arrange, dust, the grease on surface
Etc. can by remove cleaning.The plane noise filter device 1 has the advantages that low cost, reliability are high.The plane noise mistake
The material of filter device 1 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.
Embodiment 2.
A kind of kitchen ventilator with multi-frequency plane noise filter device, as shown in Fig. 6 to 7, other features and 1 phase of embodiment
Together, the difference is that, planar panel 11 be provided with it is multiple, specially two.Two planar panels 11 are staggered and are assemblied in
Inside smoke machine main body 2.The through-hole 111 of each planar panel 11 and the through-hole 111 of adjacent flat planar panel 11 are all in mutually
It is arranged in a staggered manner.
It should be noted that planar panel 11 of the invention is two, or any positive integer greater than 2, specifically
Number according to the actual situation depending on.
Compared with Example 1, multiple planar panels 11 are more advantageous to noise reduction to the present embodiment.
Embodiment 3.
A kind of kitchen ventilator with multi-frequency plane noise filter device, as shown in Figure 8-9, other features and 1 phase of embodiment
Together, the difference is that, planar panel 11 be provided with it is multiple, specially two.Specially two.Two planar panels 11
Alignment is assemblied in inside smoke machine main body 2.The through-hole 111 of each planar panel 11 and the through-hole 111 of adjacent flat planar panel 11
All it is mutually aligned.
Compared with Example 1, multiple planar panels 11 are more advantageous to noise reduction to the present embodiment.Simultaneously compared with Example 2,
The through-hole 111 of Different Plane shape panel 11 is all mutually aligned the elimination of more conducively noise.
Embodiment 4.
A kind of kitchen ventilator with multi-frequency plane noise filter device, other features are same as Example 1, and difference exists
In the planar panel 11 of the present embodiment is specially metal flat shape panel 11, it should be noted that planar panel of the invention
11 may be Plastic Flat planar panel 11 or the planar panel 11 of alloy, depending on specific embodiment is with actual conditions.
The planar panel 11 of the metal of the present embodiment has the advantages that high temperature resistant, durable.
Embodiment 5.
A kind of kitchen ventilator with multi-frequency plane noise filter device, as shown in Figure 10, other features and 1 phase of embodiment
Together, the difference is that, the planar panel 11 of the present embodiment is fixedly connected with reinforced structure 112.Specific reinforced structure 112
For 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 planar panel 11 is low resistance structure to the present embodiment.Low resistance structure energy
Incidence wave and back wave is enough set to have out of phase under the specific distance with reflecting surface, so that the sound wave of noise can be supported mutually
Disappear, to reduce the intensity of noise.
Embodiment 6.
A kind of kitchen ventilator with multi-frequency plane noise filter device, as shown in figure 11, other features and 1 phase of embodiment
Together, the difference is that, there are gaps between planar panel 11 and the immediate wall surface of smoke machine main body 2, by the distance in gap
It is defined as H1.Plane 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
It is defined as H2, and H2≤0.6H1.The thickness of planar panel 11 of the invention is less than 20mm.The sound-absorbing part 12 of the present embodiment is fixed
In the outer surface of planar panel 11.
Sound wave is usually propagated with opposite direction touching plane noise filter device 1, thus most incidence wave can and
Back wave interferes.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 sound-absorbing part 12 of the invention can also be fixed on planar panel 11 and the nearest wall of smoke machine main body 2
The surface in face or sound-absorbing part 12 are fixed between planar panel 11 and the nearest wall surface gap of smoke machine main body 2, specific real
Depending on mode is applied 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.Therefore sound-absorbing part 12 of the invention is preferably fiber, PP cotton, polyester fiber, Carbon fibe or porous foam.Or
Person's 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.
Embodiment 7.
A kind of kitchen ventilator with multi-frequency plane noise filter device, as shown in Figures 12 and 13, other features and embodiment 1
It is identical, the difference is that, the through-hole 111 of the present embodiment can be divided into divergence expression, spiral in planar 11 distribution mode of panel
Formula, wave, winding type or the random mode for removing above-mentioned four kinds of modes.
The distribution mode of the present embodiment can be divided into two spiral, divergence expressions and a random mode.Specifically, this
The through-hole 111 of the planar panel 11 of embodiment spirally such as the B in the A and Figure 12 in Figure 12, divergence expression such as D in Figure 12 and
Random mode such as tri- kinds of different distributions modes of C in Figure 12 are distributed in planar panel 11.
The divergence expression of the present embodiment, as shown in the D in Figure 12.It should be noted that the divergence expression in the present invention is not limited to
These three divergence expressions of the B in the A or Figure 13 in D, Figure 13 in Figure 12, any other divergence expression mode also comply with the present invention
The requirement of divergence expression, also within the scope of the present invention.
The present embodiment it is spiral, as shown in the B in the A and Figure 12 in Figure 12, it should be noted that, the present invention in spiral
Formula is not limited to these four spiral, any other spiral shells of the C in B, Figure 13 in A, Figure 12 in Figure 12 or D in Figure 13
Rotating mode also complies with requirement of the invention, also within the scope of the present invention.
The random mode of the present embodiment, as shown in the C in Figure 12, the random mode in the present invention is not limited to C, figure in Figure 12
These three random modes of the J in I or Figure 13 in 13, any other random mode mode also comply with requirement of the invention, also exist
In protection scope of the present invention.
Wave in the present invention is not limited to both waves of the F in the E and Figure 13 in Figure 13, any other wave
Unrestrained formula mode also complies with requirement of the invention, also within the scope of the present invention.
Winding type in the present invention is not limited to both winding type modes of the H in the G and Figure 13 in Figure 13, other
Meaning winding type mode 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 planar panel 11 of the invention is not limited to the as shown in figure 12 of the present embodiment
Divergence expression, random mode and screw type distribution mode, or divergence expression, spiral, wave, winding type or removing
The one or more arrangements of any one in the random mode of above-mentioned four kinds of modes, can also be two or more one or one row
Column, or two or more one or more arrangement specific embodiments can according to the actual situation depending on.
Embodiment 8.
A kind of design of the kitchen ventilator with multi-frequency plane noise filter 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=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 plane noise filter device 1 of the kitchen ventilator is only with the corresponding through-hole 111 of above-mentioned two target frequency
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 drop
It makes an uproar purpose.
Embodiment 9.
A kind of design of the kitchen ventilator with multi-frequency plane noise filter 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 plane noise filter device 1 of the kitchen ventilator is only with the corresponding through-hole 111 of above-mentioned two target frequency
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 drop
It makes an uproar 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, although the invention is described in detail with reference to the preferred embodiments, the member of the ordinary skill of this field should be managed
Solution, can be with modifying or equivalently replacing the technical solution of the present invention, without departing from the essence and model of technical solution of the present invention
It encloses.
Claims (10)
1. a kind of kitchen ventilator with multi-frequency plane noise filter device, it is characterised in that: it is provided with smoke machine main body and can reduce
The plane noise filter device of multi-frequency noise, plane noise filter device are assemblied in smoke machine main body.
2. a kind of kitchen ventilator with multi-frequency plane noise filter device according to claim 1, it is characterised in that: it is described
Plane noise filter device is set as being distributed with multiple for offsetting the planar panel of different frequency noise through-hole.
3. a kind of kitchen ventilator with multi-frequency plane noise filter device according to claim 2, it is characterised in that: it is described
The aperture of through-hole is defined as d, and d≤30mm；
The value of the d is multiple.
4. a kind of kitchen ventilator with multi-frequency plane noise filter device according to claim 3, it is characterised in that: it is described
The edge of through-hole and the edge minimum range of adjacent through-holes are b, and b is the arbitrary value greater than 0；
The value of the b is multiple.
5. a kind of kitchen ventilator with multi-frequency plane noise filter device according to claim 4, it is characterised in that: it is described
Through-hole is formula symmetrical above and below, bilateral symmetry formula or asymmetric formula in planar panel distribution mode；Or
The through-hole is divergence expression, spiral, wave, winding type or in addition to above-mentioned four kinds in planar panel distribution mode
The random mode of mode；
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.
6. a kind of kitchen ventilator with multi-frequency plane noise filter device according to claim 5, it is characterised in that: it is described
Planar panel is provided with multiple；
Multiple planar panels, which are staggered, is assemblied in smoke machine body interior；
The through-hole of each planar panel and the through-hole of adjacent flat planar panel are all in mutually stagger setting.
7. a kind of kitchen ventilator with multi-frequency plane noise filter device according to claim 5, it is characterised in that: it is described
Planar panel is provided with multiple；
Multiple planar panels in alignment are assemblied in smoke machine body interior；
The through-hole of each planar panel and the through-hole of adjacent flat planar panel are all mutually aligned.
8. a kind of kitchen ventilator with multi-frequency plane noise filter device according to claim 7 or 6, it is characterised in that:
There are gaps between the planar panel and the immediate wall surface of smoke machine main body, are H by the distance definition in gap1；
The plane noise filter 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 planar panel；Or
The sound-absorbing part is fixed on the surface of planar panel Yu the nearest wall surface of smoke machine main body；Or
The sound-absorbing part is fixed between planar 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.
9. a kind of kitchen ventilator with multi-frequency plane noise filter device according to claim 8, it is characterised in that: it is described
Planar panel is metal flat shape panel, Plastic Flat planar panel or the planar panel of alloy.
10. a kind of kitchen ventilator with multi-frequency plane noise filter device according to claim 9, it is characterised in that: institute
It states planar panel and is fixedly connected with reinforced structure；
The reinforced structure is convex closure, recessed packet or reinforcing rib；
The thickness of the planar panel is less than 20mm；
By adjusting the through-hole distribution of the edge minimum range, panel in the aperture of different through-holes, the edge of through-hole and adjacent through-holes
Or plane noise filter device reaches multi-frequency noise noise reduction at a distance from smoke machine main body.
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| CN106871204A (en) * | 2017-03-31 | 2017-06-20 | 广东美的厨房电器制造有限公司 | Range hood |
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| CN204348330U (en) * | 2014-12-30 | 2015-05-20 | 北京市劳动保护科学研究所 | A kind of controlled sound-absorbing composite board |
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Application publication date: 20181207 |