CN108954433A - A kind of through-hole presses the multi-frequency noise filtering kitchen ventilator of arrangement area distribution - Google Patents
A kind of through-hole presses the multi-frequency noise filtering kitchen ventilator of arrangement area distribution Download PDFInfo
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- CN108954433A CN108954433A CN201810772832.3A CN201810772832A CN108954433A CN 108954433 A CN108954433 A CN 108954433A CN 201810772832 A CN201810772832 A CN 201810772832A CN 108954433 A CN108954433 A CN 108954433A
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- Prior art keywords
- noise filtering
- hole
- noise
- frequency noise
- kitchen ventilator
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
A kind of through-hole presses the multi-frequency noise filtering kitchen ventilator of arrangement area distribution, is provided with smoke machine main body and can reduce the noise filtering device of multi-frequency noise, noise filtering device is assemblied in smoke machine main body.Noise filtering device is set as being distributed the panel of the through-hole for offsetting multi-frequency noise.Through-hole is distributed in noise filtering device by arrangement region.The noise filtering device is able to maintain long-term good noise reduction effect, which has the advantages that be easy to arrange, and dust, the grease on surface etc. can be by removing cleaning.The noise filtering device has the advantages that low cost, reliability are high simultaneously.The material of the noise filtering device is anticorrosive, chemical resistance and is hardly damaged, and narrow frequency noise and broadband noise can be effectively reduced, noise reduction wide frequency range can reduce the noise of multiple frequencies.
Description
Technical field
The present invention relates to kitchen ventilator field, in particular to a kind of through-hole is by the multi-frequency noise filtering for arranging area distribution
Kitchen ventilator.
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 through-hole by the multi-frequency noise filtering oil smoke of arrangement area distribution
Machine is very necessary to solve prior art deficiency.
Summary of the invention
A kind of through-hole is provided it is an object of the invention to avoid in place of the deficiencies in the prior art by arrangement area distribution
Multi-frequency noise filtering kitchen ventilator.The through-hole is more with that can reduce by the multi-frequency noise filtering kitchen ventilator of arrangement area distribution
The advantages of frequency noise.
Above-mentioned purpose of the invention is realized by following technical measures:
A kind of through-hole is provided by the multi-frequency noise filtering kitchen ventilator of arrangement area distribution, is provided with smoke machine main body and energy
The noise filtering device of multi-frequency noise is reduced, noise filtering device is assemblied in smoke machine main body.
The noise filtering device is set as being distributed the panel of the through-hole for offsetting multi-frequency noise.
The through-hole is distributed in noise filtering device by arrangement region.
Preferably, above-mentioned arrangement region be rounded projections arranged, square arrangement, diamond array or in addition to above-mentioned three kinds arrange
At least one of polygonal arrangement of column.
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, 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 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, there are gaps between above-mentioned panel and the immediate wall surface of smoke machine main body, are by the distance definition in gap
H1。
Preferably, above-mentioned noise filtering device is additionally provided with sound-absorbing part, and sound-absorbing part assembles smoke machine main body.
Preferably, the thickness of above-mentioned sound-absorbing part is defined as H2, and H2≤0.6H1。
Preferably, above-mentioned sound-absorbing part is fixed on the outer surface of panel；Or
The sound-absorbing part is fixed on the surface of panel 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.
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 combination of the noise filtering device at a distance from smoke machine main body reach multi-frequency noise noise reduction.
Preferably, above-mentioned panel is metal decking, plastic front board or alloy panel.
Preferably, above-mentioned panel is connected with reinforced structure.
Preferably, above-mentioned reinforced structure is convex closure, recessed packet or reinforcing rib.
A kind of through-hole of the invention is provided with smoke machine main body by the multi-frequency noise filtering kitchen ventilator of arrangement area distribution
With the noise filtering device that can reduce multi-frequency noise, noise filtering device is assemblied in smoke machine main body；The noise filtering device
It is set as being distributed the panel of the through-hole for offsetting multi-frequency noise.Through-hole is distributed in noise filtering device by arrangement region.
Denoising device in the prior art can only be directed to single-frequency section noise reduction.Kitchen ventilator of the invention is by adjusting different through-holes
The edge minimum range in aperture, the edge of through-hole and adjacent through-holes, the distribution of the via regions of panel or noise filtering device with
The combination of the distance of smoke machine main body reaches multi-frequency noise noise reduction.The noise filtering device is able to maintain long-term good noise reduction effect
Fruit, the noise filtering device have the advantages that be easy to arrange, and dust, the grease on surface etc. can be by removing cleaning.The noise
Filter device has the advantages that low cost, reliability are high simultaneously.The material of the noise filtering device is anticorrosive, chemical resistance
Narrow frequency noise and broadband noise can be effectively reduced in the advantages of with being hardly damaged.
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 through-hole of embodiment 1 by the structural representation for the multi-frequency noise filtering kitchen ventilator for arranging area distribution
Figure.
Fig. 2 is the signal of the edge minimum range in the aperture of through-hole and the edge of through-hole and adjacent through-holes of panel in Fig. 1
Figure.
Fig. 3 is the arrangement region distribution schematic diagram in Fig. 1.
Fig. 4 is the arrangement area schematic of a variety of through-holes.
Fig. 5 is the panel array area distribution schematic diagram of embodiment 2.
Fig. 6 is a kind of through-hole of embodiment 3 by the multi-frequency noise filtering range hood structure signal of arrangement area distribution
Figure.
Fig. 7 is the panel machine structural schematic diagram of embodiment 4.
Fig. 1 includes into Fig. 7:
Noise filtering device 1, panel 11, through-hole 111, reinforced structure 112, sound-absorbing part 12, arrangement region 13,
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 through-hole is provided with smoke machine as shown in Fig. 1-3 by the multi-frequency noise filtering kitchen ventilator of arrangement area distribution
Main body 2 and the noise filtering device 1 that can reduce multi-frequency noise, noise filtering device 1 are assemblied in smoke machine main body 2.Noise filtering
Device 1 is set as being distributed the panel 11 of the through-hole 111 for offsetting multi-frequency noise.Through-hole 111 is distributed by arrangement region 13
In noise filtering device 1.
Arrangement region 13 of the invention be rounded projections arranged, square arrangement, diamond array or in addition to above-mentioned three kinds arrange
Polygonal arrangement.The arrangement region 13 of specific the present embodiment is rounded projections arranged.
The rounded projections arranged of the present embodiment, as shown in Fig. 3.It should be noted that the rounded projections arranged in the present invention is not
It is confined in Fig. 3, Fig. 4 in C and Fig. 4 shown in D, the arrangement region 13 of any other rounded projections arranged also meets three in the present invention
The requirement of triangular arrangement, also within the scope of the present invention.
It should be noted that square arrangement of the invention is not limited in Fig. 4 in A and Fig. 4 shown in B, any other multi-party shape
The arrangement region 13 of arrangement also meets the requirement of rectangular shape arrangement in the present invention, also within the scope of the present invention.
It should be noted that diamond array of the invention is not limited in Fig. 4 in E and Fig. 4 shown in F, any other diamond shape row
The arrangement region 13 of column also meets the requirement of diamond array in the present invention, also within the scope of the present invention.
It should be noted that polygonal arrangement of the invention is not limited in Fig. 4 in G and Fig. 4 shown in H, it is any other polygon
The arrangement region 13 of shape arrangement also meets the requirement of polygonal arrangement in the present invention, also within the scope of the present invention.
It should be noted that arrangement region 13 of the invention can for rounded projections arranged, square arrangement, diamond array or
One of form of the polygonal arrangement arranged in addition to above-mentioned three kinds, or the multiple groups of these four forms are closed, specifically
Embodiment according to the actual situation depending on.
The through-hole 111 of the present embodiment is to be conducive to be configured by arrangement region 13 by the effect in multiple arrangement regions 13
The frequency of the target noise of required elimination.
The aperture of through-hole 111 of the invention is defined as d, and the value of d≤30mm, d are multiple.The edge of through-hole 111 and phase
The edge minimum range of adjacent through-hole 111 is b, and b is the arbitrary value greater than 0, and the value of b is multiple.
The aperture of the through-hole 111 of the present embodiment is defined as d, and d≤30mm.The edge and adjacent through-holes 111 of through-hole 111
Edge minimum range be b, b is 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.
The shape of through-hole 111 of the invention is circle, ellipse, triangle, square, rectangle, pentagon, six sides
At least one of shape, diamond shape or irregular shape.
Through-hole 111 of the invention it is conveniently of circular shape because round upper relatively easy in technique production, and because not having
There is the interference of corner angle, noise reduction effect is optimal.It should be noted that the shape of through-hole 111 may be ellipse, triangle, pros
Shape, rectangle, pentagon, hexagon, diamond shape or other arbitrary shapes, or the shape of above-mentioned a variety of through-holes 111
The combination of shape, depending on specific embodiment is with actual conditions.
As denoising device principle of the invention: noise filtering device 1 can make an uproar in limited closed space
When sound source travels to noise filtering device 1, noise reduction is carried out.Sound wave is usually passed with opposite direction touching noise filtering device 1
It broadcasts, so most incidence wave can be interfered with back wave.
Noise filtering device 1 carries out noise reduction using the principle of resonance simultaneously, when the edge of aperture d and through-hole 111 and phase
After the edge minimum range b of adjacent through-hole 111 is determined, space in specific noise frequency and the noise that has been set target frequency
Filter 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.For multiple and different b value and d value
Panel 11 should just eliminate multi-frequency noise.
The through-hole can be by adjusting different through-holes 111 by the multi-frequency noise filtering kitchen ventilator of arrangement area distribution
The edge minimum range in aperture and the edge of through-hole 111 and adjacent through-holes 111, is reduced the noise of different target frequency, from
And reach more by combination of 11 through-hole 111 of the panel arrangement at a distance from arrangement or noise filtering device 1 and smoke machine main body 2
Frequency noise noise reduction purpose.The noise filtering device 1 is able to maintain long-term good noise reduction effect, which, which has, holds
The advantages of easily arranging.Dust, the grease on surface etc. can be by removing cleaning.The noise filtering device 1 have simultaneously it is low at
Originally, the high advantage of reliability.The material of the noise filtering device 1 is anticorrosive, chemical resistance and is hardly damaged advantage, while energy
Narrow frequency noise and broadband noise is effectively reduced.
Embodiment 2.
A kind of through-hole presses the multi-frequency noise filtering kitchen ventilator of arrangement area distribution, as shown in figure 5, other features and reality
It is identical to apply example 1, the difference is that, the arrangement region 13 of the present embodiment is square arrangement, as shown in Fig. 5.
It should be noted that the square arrangement in the present invention is not limited in Fig. 5, in Fig. 4 in A and Fig. 4 shown in B, other
The arrangement region 13 of meaning square arrangement also meets the requirement of square arrangement in the present invention, also within the scope of the present invention.
The d and b of the present embodiment have multiple values.The present embodiment is multi-frequency noise noise reduction kitchen ventilator.
Experiments verify that the arrangement region 13 of the present embodiment is preferable for the noise reduction effect of square arrangement.
Embodiment 3.
A kind of through-hole presses the multi-frequency noise filtering kitchen ventilator of arrangement area distribution, as shown in fig. 6, other features and reality
It is identical to apply example 1, the difference is that, between panel 11 and the immediate wall surface of smoke machine main body 2 there are gap, by gap away from
From being defined as H1.Noise filtering device 1 is additionally provided with sound-absorbing part 12, and sound-absorbing part assembles smoke machine main body 2.The thickness of sound-absorbing part 12
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.
In specific distance, about a quarter of noise source wavelength away from degree at, the speed of particle reaches highest.Yin Ben
Invention passes through the i.e. H at a distance from noise filtering device 1 of shell 21, noise source wavelength a quarter away from degree at, can have
Effect eliminates the noise of the wavelength.
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 hole of filter denoising device.Therefore sound-absorbing part 12 of the invention be 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, reinforces
Noise reduction effect.
Embodiment 4.
A kind of through-hole presses the multi-frequency noise filtering kitchen ventilator of arrangement area distribution, as shown in fig. 7, other features and reality
It is identical to apply example 1, the difference is that, the panel 11 of the present embodiment is specially metal decking 11, it should be noted that face of the invention
Plate 11 or plastics 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.
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 or 111 area distribution of through-hole of panel 11 achieve the purpose that multi-frequency noise noise reduction.
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 through-hole by the multi-frequency noise filtering kitchen ventilator of arrangement area distribution design:
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 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 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 7.
A kind of through-hole by the multi-frequency noise filtering kitchen ventilator of arrangement area distribution design:
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 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 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 through-hole is by the multi-frequency noise filtering kitchen ventilator of arrangement area distribution, it is characterised in that: it is provided with smoke machine main body
With the noise filtering device that can reduce multi-frequency noise, noise filtering device is assemblied in smoke machine main body；
The noise filtering device is set as being distributed the panel of the through-hole for offsetting multi-frequency noise；
The through-hole is distributed in noise filtering device by arrangement region.
2. Ju claim 1 through-hole is by the multi-frequency noise filtering kitchen ventilator of arrangement area distribution, it is characterised in that: the row
Column region be rounded projections arranged, square arrangement, diamond array or in addition to above-mentioned three kinds arrange polygonal arrangement at least
It is a kind of.
3. through-hole according to claim 2 is by the multi-frequency noise filtering kitchen ventilator of arrangement area distribution, it is characterised in that:
The shape of the through-hole is circle, ellipse, triangle, square, rectangle, pentagon, hexagon, diamond shape or irregular
At least one of shape.
4. through-hole according to claim 3 is by the multi-frequency noise filtering kitchen ventilator of arrangement area distribution, it is characterised in that:
The aperture of the through-hole is defined as d, and d≤30mm；
The value of the d is multiple.
5. through-hole according to claim 4 is by the multi-frequency noise filtering kitchen ventilator of arrangement area distribution, it is characterised in that:
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；
The value of the b is multiple.
6. through-hole according to claim 5 is by the multi-frequency noise filtering kitchen ventilator of arrangement area distribution, it is characterised in that:
There are gaps between the panel and the immediate wall surface of smoke machine main body, are H by the distance definition in gap1。
7. through-hole according to claim 6 is by the multi-frequency noise filtering kitchen ventilator of arrangement area distribution, it is characterised in that:
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。
8. through-hole according to claim 7 is by the multi-frequency noise filtering kitchen ventilator of arrangement area distribution, it is characterised in that:
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.
9. through-hole according to claim 8 is by the multi-frequency noise filtering kitchen ventilator of arrangement area distribution, it is characterised in that:
The sound-absorbing part is fiber, PP cotton, polyester fiber, Carbon fibe or porous foam；Or
The sound-absorbing part is porous plate.
10. through-hole according to claim 9 exists by the multi-frequency noise filtering kitchen ventilator of arrangement area distribution, feature
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
The combination of cloth or noise filtering device at a distance from smoke machine main body reaches multi-frequency noise noise reduction；
The panel is metal decking, plastic front board or alloy panel；
The panel is connected with reinforced structure；
The reinforced structure is convex closure, recessed packet or reinforcing rib.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810772832.3A CN108954433A (en) | 2018-07-14 | 2018-07-14 | A kind of through-hole presses the multi-frequency noise filtering kitchen ventilator of arrangement area distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810772832.3A CN108954433A (en) | 2018-07-14 | 2018-07-14 | A kind of through-hole presses the multi-frequency noise filtering kitchen ventilator of arrangement area distribution |
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| Publication Number | Publication Date |
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| CN108954433A true CN108954433A (en) | 2018-12-07 |
Family
ID=64483195
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|---|---|---|---|
| CN201810772832.3A Pending CN108954433A (en) | 2018-07-14 | 2018-07-14 | A kind of through-hole presses the multi-frequency noise filtering kitchen ventilator of arrangement area distribution |
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| CN (1) | CN108954433A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113316072A (en) * | 2021-05-27 | 2021-08-27 | 武汉大学 | Piezoelectric acoustic transducer with filtering function and manufacturing method thereof |
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Application publication date: 20181207 |
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| RJ01 | Rejection of invention patent application after publication |