CN209655386U - A kind of kitchen ventilator of wide frequency noise interference device - Google Patents
A kind of kitchen ventilator of wide frequency noise interference device Download PDFInfo
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- CN209655386U CN209655386U CN201821969234.7U CN201821969234U CN209655386U CN 209655386 U CN209655386 U CN 209655386U CN 201821969234 U CN201821969234 U CN 201821969234U CN 209655386 U CN209655386 U CN 209655386U
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Abstract
A kind of kitchen ventilator of wide frequency noise interference device, is provided with smoke machine main body and the noise interference device for reducing multi-frequency noise, and noise interference device is assemblied in smoke machine main body；The noise interference device is provided with multiple.The utility model reaches the noise reduction of specific multi-frequency noise by adjusting the shortest distance of the area of two openings of noise interference device, the entire length of noise interference device or two openings.The kitchen ventilator is able to maintain long-term good noise reduction effect, which has the advantages that low cost, reliability are high.The noise interference device is the resonance amplitude and phase through specific noise frequency, interferes with the noise transmitted in main air duct pipe and reaches the noise reduction of specific multi-frequency noise to lower the amplitude of this noise frequency and reduced.The material of the noise interference device is anticorrosive, resist chemical and is hardly damaged.
Description
Technical field
The utility model relates to kitchen ventilator field, in particular to a kind of kitchen ventilator of wide frequency noise interference 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.However passive noise reduction is mainly by being wrapped in noise source or pipeline with acoustical cotton.But exist following several
A disadvantage: one, air pressure consume is excessive, and noise and fluid are needed across acoustical cotton, and sound can be consumed using friction, reach drop
The effect made an uproar, but air performance is reduced simultaneously.Two, it is difficult to select suitable acoustical cotton, seldom supplying factory can mention
For acoustical cotton can acoustic absorptivity at different frequencies data, therefore the manufacturing enterprise of kitchen ventilator can only continuously attempt to and mistake
In find out type or thickness of suitable acoustical cotton etc..Three, the noise reduction frequency of acoustical cotton is uncontrollable, for universal acoustical cotton
Maximum noise reduction effect cannot be reached under specified narrow frequency, different strategies can not be collocated with each other from design also to carry out more
Effective noise reduction.
Therefore in view of the shortcomings of the prior art, providing a kind of kitchen ventilator of wide frequency noise interference device to solve the prior art
It is insufficient very necessary.
Utility model content
The purpose of this utility model is that providing a kind of wide frequency noise interference dress in place of avoiding the deficiencies in the prior art
The kitchen ventilator set.The oil smoke function of the wide frequency noise interference device reduces specific multi-frequency noise.
The above-mentioned purpose of the utility model is realized by following technical measures:
A kind of kitchen ventilator of wide frequency noise interference device is provided, is provided with smoke machine main body and for reducing multi-frequency noise
Noise interference device, noise interference device is assemblied in smoke machine main body.
The noise interference device is provided with multiple.
Preferably, above-mentioned noise interference device setting is there are two opening, two main air ducts with smoke machine main body respectively that are open
The horizontal position of connection and two openings is different.
K will be defined as close to the opening of main air duct air inlet1, K1Area be defined as M1, close to opening for main air duct air outlet
Mouth is defined as K2, K2Area be defined as M2。
Preferably, above-mentioned noise interference device arrangement mode include it is arranged in parallel, overlapping arrangement, be arranged above and below, staggeredly
At least one of arrangement or the arbitrary arrangement except above-mentioned four kinds of arrangement modes.
Preferably, above-mentioned noise interference device is by adjusting the areas of two openings, the entire length of noise interference device
Or the shortest distance of two openings reaches the noise reduction of specific multi-frequency noise.
Preferably, the area of the air inlet of above-mentioned main air duct is defined as K3, K3Area be defined as M3。
Preferably, the area of the air outlet of above-mentioned main air duct is defined as K4, K4Area be defined as M4。
Preferably, above-mentioned M1=M2, M3=M4。
Preferably, the wall thickness of above-mentioned noise interference device is defined as B, and 0.1mm≤B≤10mm.
Further preferred 0.6mm≤B≤1.2mm.
Preferably, the monnolithic case of above-mentioned noise interference device is c-type monnolithic case, outside З type monnolithic case, W type entirety
Shape, V-type monnolithic case, M type monnolithic case, m type monnolithic case, N-type monnolithic case, N-shaped monnolithic case, undaform are whole outer
Shape, broken line type monnolithic case or the arbitrary shape in addition to above-mentioned shape.
Preferably, above-mentioned smoke machine main body is additionally provided with noise filtering device, and noise filtering device is assemblied in the interior of main air duct
Surface.
Preferably, above-mentioned noise filtering device is set as being distributed with multiple for eliminating the face of the through-hole of multi-frequency noise
Plate.
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.
The value of the d is multiple；
The value of the b is multiple.
Preferably, above-mentioned noise filtering device is by adjusting the aperture of different through-holes or the edge of through-hole and adjacent through-holes
Edge minimum range or noise filtering device reach specific unifrequency noise or multi-frequency noise at a distance from smoke machine main body
Noise reduction.
A kind of kitchen ventilator of wide frequency noise interference device of the utility model, is provided with smoke machine main body and for reducing more
The noise interference device of frequency noise, noise interference device are assemblied in smoke machine main body；The noise interference device is provided with multiple.
The utility model is by adjusting the area of two openings of noise interference device, the entire length of noise interference device or two
The shortest distance of opening reaches the noise reduction of specific multi-frequency noise.The kitchen ventilator is able to maintain long-term good noise reduction effect, this is made an uproar
Acoustic interference device has the advantages that low cost, reliability are high.The noise interference device is the resonance vibration through specific noise frequency
The noise transmitted in width and phase, with main air duct pipe is interfered to lower the amplitude of this noise frequency, reaches specific multifrequency
The noise reduction of rate noise is reduced.The material of the noise interference device is anticorrosive, resist chemical and is hardly damaged.
Detailed description of the invention
The utility model is further described using attached drawing, but the content in attached drawing is not constituted to the utility model
Any restrictions.
Fig. 1 is the noise interference device of embodiment 1 and the structural schematic diagram of main air duct.
Fig. 2 is the schematic cross-section of Fig. 1.
Fig. 3 is noise interference device arrangement mode schematic diagram, (a) in Fig. 3 be it is arranged in parallel, (b) in Fig. 3 is parallel
Arrangement.
Fig. 4 is noise interference device arrangement mode schematic diagram, and (a) in Fig. 4 is overlapping arrangement, and (b) in Fig. 4 is overlapping
Arrangement.
Fig. 5 is noise interference device arrangement mode schematic diagram, and (a) in Fig. 5 is to be arranged above and below, and (b) in Fig. 5 is upper and lower
Arrangement.
Fig. 6 is noise interference device arrangement mode schematic diagram, and (a) in Fig. 6 is to be staggered, and (b) in Fig. 6 is staggeredly
It arranges, (c) in Fig. 6 is to be staggered, and (d) in Fig. 6 is to be staggered.
Fig. 7 is noise interference device arrangement mode schematic diagram, and (a) in Fig. 7 is arbitrary arrangement, and (b) in Fig. 7 is any
It arranges, (c) in Fig. 7 is arbitrary arrangement.
Fig. 8 is the noise interference apparatus structure schematic diagram of Fig. 1.
Fig. 9 is the schematic diagram of the monnolithic case of noise interference device, and (1) in Fig. 9 is c-type monnolithic case, in Fig. 9
It (2) is З type monnolithic case, (3) in Fig. 9 are W type monnolithic case, and (4) in Fig. 9 are V-type monnolithic case, and (5) in Fig. 9 are
M type monnolithic case, (6) in Fig. 9 are m type monnolithic case, and (7) in Fig. 9 are N-type monnolithic case, and (8) in Fig. 9 are that N-shaped is whole
External shape, (9) in Fig. 9 are undaform monnolithic case, and (10) in Fig. 9 are undaform monnolithic case, and (11) in Fig. 9 are wave
Wave type monnolithic case, (12) in Fig. 9 are arbitrary shape, and (13) in Fig. 9 are arbitrary shape, and (14) in Fig. 9 are arbitrary shape
Shape, (15) in Fig. 9 are arbitrary shape, and (16) in Fig. 9 are arbitrary shape, and (17) in Fig. 9 are broken line type monnolithic case, figure
(18) in 9 are broken line type monnolithic case.
Figure 10 is the structural schematic diagram of the noise interference device of embodiment 3, main air duct and noise filtering device.
Figure 11 is the structural schematic diagram of noise filtering device in Figure 10.
Figure 12 is the edge minimum range relation schematic diagram at the edge and adjacent through-holes of through-hole aperture and through-hole in Figure 11.
Fig. 1 includes into Figure 12:
Noise interference device 1,
Main air duct 2,
Noise filtering device 3, through-hole 31.
Specific embodiment
The technical solution of the utility model is described further with the following Examples.
Embodiment 1.
A kind of kitchen ventilator of wide frequency noise interference device, as shown in Fig. 1 to 7, be provided with smoke machine main body and for reducing
The noise interference device 1 of multi-frequency noise, noise interference device 1 are assemblied in smoke machine main body.Noise interference device 1 is provided with more
It is a.The present embodiment is set as 4.
It should be noted that the noise interference device 1 of the kitchen ventilator of the wide frequency noise interference device of the utility model can be with
Be set as 4, may be set to be any positive integer greater than 1, the specific number of noise interference device 1 according to the actual situation and
It is fixed.
There are two opening, two openings are connected to the main air duct 2 of smoke machine main body and two the setting of noise interference device 1 respectively
The horizontal position of opening is different.
K will be defined as close to the opening of 2 air inlet of main air duct1, K1Area be defined as M1, close to 2 air outlet of main air duct
Opening is defined as K2, K2Area be defined as M2。
1 arrangement mode of noise interference device of the utility model include it is arranged in parallel, overlapping arrangement, be arranged above and below, hand over
At least one of mistake arrangement or the arbitrary arrangement except above-mentioned four kinds of arrangement modes.The arrangement mode of specific the present embodiment is flat
Row arrangement.
1 arrangement mode of noise interference device of the utility model is arranged in parallel, such as (b) institute in (a) and Fig. 3 in Fig. 3
Show, it should be noted that, (a) arranged in parallel being not limited in Fig. 3 in the utility model and both such as (b) in Fig. 3
It is arranged in parallel, it is any other it is arranged in parallel also comply with the utility model requirement arranged in parallel, also in the protection of the utility model
In range.
The 1 arrangement mode overlapping arrangement of noise interference device of the utility model, such as (b) institute in (a) and Fig. 4 in Fig. 4
Show, it should be noted that, the overlapping arrangement in the utility model is not limited to both weights of (a) in Fig. 4 and (b) in Fig. 4
Stack arrangement, any other overlapping arrangement also comply with the requirement of the utility model overlapping arrangement, also in the protection model of the utility model
In enclosing.
1 arrangement mode of noise interference device of the utility model is arranged above and below, such as (b) institute in (a) and Fig. 5 in Fig. 5
Show, it should be noted that, in both for (b) in (a) and Fig. 5 that being arranged above and below in the utility model is not limited in Fig. 5
Lower arrangement, any other be arranged above and below also complies with the requirement that the utility model is arranged above and below, also in the protection model of the utility model
In enclosing.
1 arrangement mode of noise interference device of the utility model is staggered, such as (a) in Fig. 6, (b) in Fig. 6, Fig. 6
In (c) and Fig. 6 in (d) shown in, it should be noted that, (a) being not limited in Fig. 6 that be staggered in the utility model,
These four of (d) in (c) in (b), Fig. 6 and Fig. 6 in Fig. 6 are staggered, and any other be staggered also complies with this reality
It is also within the protection scope of the present utility model with novel staggered requirement.
The 1 arrangement mode arbitrary arrangement of noise interference device of the utility model, such as (a) in Fig. 7, (b) in Fig. 7 and figure
Shown in (c) in 7, it should be noted that, the arbitrary arrangement in the utility model be not limited to (a) in Fig. 7, (b) in Fig. 7 and
These three arbitrary arrangements of (c) in Fig. 7, it is any other to arrange the requirement for also complying with the utility model arbitrary arrangement, also at this
In the protection scope of utility model.
It should be noted that 1 arrangement mode of noise interference device of the utility model can only be arranged in parallel, or
Overlapping arrangement, be arranged above and below, be staggered or except above-mentioned four kinds of arrangement modes arbitrary arrangement any one, or
A variety of combinations, specific embodiment according to the actual situation depending on.
The noise interference device 1 of the utility model is long by adjusting the entirety of two areas being open, noise interference device 1
The shortest distance of degree or two openings reaches the noise reduction of specific multi-frequency noise.
The area of the air inlet of main air duct 2 is defined as K3, K3Area be defined as M3；The area of the air outlet of main air duct 2 is fixed
Justice is K4, K4Area be defined as M4。M1=M2, M3=M4。
The noise reduction effect and main air duct 2 and branched pipe caliber of noise interference device 1 have great relationship.The utility model is excellent
It is selected as M1=M2, M3=M4, can also be with M1≠M2, M3≠M4.Since in identical cross-sectional area, i.e. M3=M4When, in M2Lower section
Even if region can reach the resonance phase that good noise reduction effect is formed in noise interference device 1 and amplitude some deviations, In
Under this condition, broadband noise frequency can be effectively reduced in this.
In M3>M4When, in M2The noise reduction effect in the region of lower section is confined to specific narrow frequency noise, and noise reduction effect can poor one
A bit.This is because as long as acoustic phase and amplitude that noise interference device 1 resonates have slight deviations that will damage to the transmitting of sound wave
Mistake has significant change.In equal cross-sectional area M3=M4Under equal proportion, the slippages of noise interference device 1 are Δ L/La
Function.Wherein LaFor the length of noise interference device 1, Δ L is the shortest distance of two openings of noise interference device 1.
The principles of the present invention are as follows: noise interference device 1 (Herschel-Quincke pipe) is according between sound wave
Interference achievees the effect that reduce sound.Noise interference device 1 be according between sound wave resonance and interference reach reduce sound
Effect.Because noise interference device 1 has multiple resonant frequencies: f0,1、f0,2、fs1And fs2.The broadband noise that kitchen ventilator generates
Wave is propagated in main air duct 2, and when encountering noise interference device, broadband noise waves are divided into first via broadband noise waves and second
It has a lot of social connections frequency noise wave, the continuation of first via broadband noise waves is propagated in main air duct 2；Second have a lot of social connections frequency noise wave enter make an uproar
Acoustic interference device 1 simultaneously resonates with noise interference device 1, and leads from one of them remittance that is open out of noise interference device
Air duct 2.When the second frequency noise wave of having a lot of social connections has and f0,1、f0,2、fs1And fs2When same or similar frequency, second has a lot of social connections frequency
Rate noise waves enter noise interference device 1 and resonate with noise interference device 1, and from wherein the one of noise interference device 1
A opening, which comes out, imports main air duct.The first via broadband noise waves propagated from from noise interference device 1 are importing main air duct 2
Second propagated afterwards with main air duct 2 has a lot of social connections frequency noise wave there are phase difference, and first via broadband noise waves and second are had a lot of social connections frequently
Rate noise waves interfere to form interference broadband noise waves, interfere amplitude of the broadband noise waves relative to broadband noise waves
Weaken, noise reduces.
The length L of the basic frequency of 1 target noise reduction of noise interference device and velocity of sound c, noise interference device 1aAnd noise is dry
Relate to the K of device 11And K2Shortest distance Δ L functional dependence reciprocal, such as following formula:
Wherein f is the basic frequency of 1 target noise reduction of noise interference device, and F is function representation symbol.Expression in above formula
Are as follows:And N=(2p+1)/2, wherein N is subfrequency multiple, and p is arbitrary integer.
So the basic frequency of target noise reduction frequency is expressed as f0,1And f0,2, subfrequency fs1And fs2It can indicate
Are as follows:
fs1=[3f0,1,5f0,1,...........,xf0,1],
fs2=[2f0,2,3f0,2,...........,yf0,2],
Wherein ∞ >=x >=2m+1, m=1,2,3....., ∞, wherein ∞ >=y >=2, because the bright noise of the utility model is dry
Two basic frequencies and multiple harmonic frequencies can be formed so as to mutually relate to multi-frequency noise by relating to device 1, reach wideband noise reduction
Purpose.
The kitchen ventilator of the wide frequency noise interference device is provided with smoke machine main body and the noise for reducing multi-frequency noise
Interference device 1, noise interference device 1 are assemblied in smoke machine main body；The noise interference device 1 is provided with multiple.The utility model
Most by adjusting the area of two openings of noise interference device 1, the entire length of noise interference device 1 or two openings
Short distance reaches the noise reduction of specific multi-frequency noise.The kitchen ventilator is able to maintain long-term good noise reduction effect, noise interference dress
Setting 1 has the advantages that low cost, reliability are high.The noise interference device 1 is the resonance amplitude and phase through specific noise frequency
Position, the noise for managing interior transmitting with main air duct 2 are interfered to lower the amplitude of this noise frequency, reach specific multi-frequency noise
Noise reduction reduced.The material of the noise interference device 1 is anticorrosive, resist chemical and is hardly damaged.
Embodiment 2.
A kind of kitchen ventilator of wide frequency noise interference device, as shown in figure 8, other features are same as Example 1, difference
It is in the wall thickness of the noise interference device 1 of the utility model is defined as B, and 0.1mm≤B≤10mm, and the preferably range of B is
0.6mm to 1.2mm, the B of the present embodiment are specially 0.8mm.
It should be noted that noise sound wave can penetrate out or cause being total in structure when the wall thickness of noise interference device 1 is too thin
Vibration, noise increases, and when the wall thickness of noise interference device 1 is too thick, increases whole weight and production cost, the utility model
The wall thickness of noise interference device 1 is any wall thickness within the scope of 0.1mm to 10mm, can also be appointing within the scope of 0.6mm to 1.2mm
Anticipate wall thickness, specific wall thickness according to the actual situation depending on.
The monnolithic case of the noise interference device 1 of the utility model is preferably N-shaped monnolithic case, or c-type is whole
Shape, З type monnolithic case, W type monnolithic case, V-type monnolithic case, M type monnolithic case, m type monnolithic case, N-type monnolithic case,
Undaform monnolithic case, broken line type monnolithic case or the arbitrary shape in addition to above-mentioned shape, specific monnolithic case according to
Depending on actual conditions.
The c-type monnolithic case of the utility model, as shown in (1) in Fig. 9.
The З type monnolithic case of the utility model, as shown in (2) in Fig. 9.
The W type monnolithic case of the utility model, as shown in (3) in Fig. 9.
The V-type monnolithic case of the utility model, as shown in (4) in Fig. 9.
The M type monnolithic case of the utility model, as shown in (5) in Fig. 9.
The m type monnolithic case of the utility model, as shown in (6) in Fig. 9.
The N-type monnolithic case of the utility model, as shown in (7) in Fig. 9.
The N-shaped monnolithic case of the utility model, as shown in (8) in Fig. 9.
The undaform monnolithic case of the utility model, such as (9) in Fig. 9, (11) institute such as (10) in Fig. 9 and in Fig. 9
Show, it should be noted that, the undaform monnolithic case in the utility model be not limited to (9) in Fig. 9, (10) in such as Fig. 9 and
These three undaform monnolithic cases of (11) in Fig. 9, any other undaform monnolithic case also comply with the utility model wave
The requirement of type monnolithic case, it is also within the protection scope of the present utility model.
The arbitrary shape of the utility model, in (12) in Fig. 9, (13) in such as Fig. 9, (14) in Fig. 9, Fig. 9
(15) shown in (16) and in Fig. 9, it should be noted that, the arbitrary shape in the utility model is not limited to (12) in Fig. 9, such as
This 5 kinds of arbitrary shapes of (14) in (13), Fig. 9 in Fig. 9, (16) in (15) and Fig. 9 in Fig. 9, other arbitrary shapes
The requirement of the utility model arbitrary shape is also complied with, it is also within the protection scope of the present utility model.
The broken line type monnolithic case of the utility model, as shown in (17) in Fig. 9 and (18) in Fig. 9, it should be noted that,
Broken line type monnolithic case in the utility model is not limited to this 2 kinds of broken line type entirety of (17) in Fig. 9 and (18) in Fig. 9
Shape, other broken line type monnolithic cases also comply with the requirement of the utility model broken line type monnolithic case, also in the utility model
In protection scope.
The c-type monnolithic case, N-shaped monnolithic case, m type monnolithic case or undaform monnolithic case of the utility model etc.
Shape does not have angular shape, it is possible to reduce sound wave the energy of noise interference device 1 loss, thus improve with noise source sound wave
The effect of interference, and then improve the effect of noise reduction.
Embodiment 3.
A kind of kitchen ventilator of wide frequency noise interference device, as shown in Figure 10 to 12, other features are same as Example 1,
The difference is that the smoke machine main body of the utility model is additionally provided with noise filtering device 3, noise filtering device 3 is assemblied in master
The inner surface in air duct 2.
Noise filtering device 3 is set as being distributed with multiple for eliminating the panel of the through-hole 31 of multi-frequency noise.
The aperture of through-hole 31 is defined as d, and d≤30mm.The value of d is multiple.
The edge of through-hole 31 and the edge minimum range of adjacent through-holes 31 are b, and b is the arbitrary value greater than 0.The value of b is more
It is a.
In the constant situation of aperture d, the smaller elimination of value of the edge minimum range b at the edge and adjacent through-holes 31 of through-hole 31
Target noise frequency it is bigger.Under the edge of through-hole 31 and the constant situation of edge minimum range b of adjacent through-holes 31, aperture
The smaller target noise frequency to be eliminated of the value of d is with regard to smaller.
It should be noted that when the value of value and d for b is unique, it can be to specific unifrequency noise noise reduction.But work as b
It can be according to the two value with being combined into specific unifrequency noise or multi-frequency noise noise reduction when with d being multiple and different values.B's
Value and the number of value of d, size according to the actual situation depending on.
The utility model is by adjusting the aperture of different through-holes 31 or the edge at the edge of through-hole 31 and adjacent through-holes 31
Minimum range or noise filtering device 3 reach the drop of specific unifrequency noise or multi-frequency noise at a distance from smoke machine main body
It makes an uproar.
The denoising device principle of the utility model is such that noise filtering device 3 can be in limited closed main air duct 2
It is interior, when noise source travels to noise filtering device 3, carry out noise reduction.Sound wave is usually touching noise filtering device 3 with negative side
To propagation, so most incidence wave can be interfered with back wave.Noise filtering device 3 is carried out using the principle of resonance
Noise reduction, the noise filtering device 3 of specific noise frequency and the target frequency of setting in space form covibration.Work as resonance
When generation, the sound wave of oscillation can intensely pierce into out through-hole 31 back and forth in air, and the sound of noise can be converted in the process
At friction loss, achieve the effect that eliminate target frequency noise.
The kitchen ventilator of the utility model can by adjusting different through-holes 31 aperture or through-hole 31 edge with it is adjacent
The edge minimum range or noise filtering device 3 of through-hole 31 reach specific unifrequency noise or multifrequency at a distance from smoke machine main body
The noise reduction purpose of rate noise.
Finally it should be noted that above embodiments are only to illustrate the technical solution of the utility model rather than to this is practical
The limitation of novel protected range, although being explained in detail referring to preferred embodiment to the utility model, the common skill of this field
Art personnel, which should be appreciated that, can be modified or replaced equivalently technical solutions of the utility model, practical new without departing from this
The spirit and scope of type technical solution.
Claims (10)
1. a kind of kitchen ventilator of wide frequency noise interference device, it is characterised in that: it is provided with smoke machine main body and for reducing multifrequency
The noise interference device of rate noise, noise interference device are assemblied in smoke machine main body；
The noise interference device is provided with multiple.
2. the kitchen ventilator of wide frequency noise interference device according to claim 1, it is characterised in that: the noise interference dress
It installs there are two opening, two openings are different from the connection of the main air duct of smoke machine main body and the horizontal positions of two openings respectively；
K will be defined as close to the opening of main air duct air inlet1, K1Area be defined as M1, the opening close to main air duct air outlet is fixed
Justice is K2, K2Area be defined as M2。
3. the kitchen ventilator of wide frequency noise interference device according to claim 2, it is characterised in that: the noise interference dress
Arrangement mode is set to include arranged in parallel, overlapping arrangement, at least one of be arranged above and below or be staggered.
4. the kitchen ventilator of wide frequency noise interference device according to claim 3, it is characterised in that: the noise interference dress
The shortest distance set by adjusting two areas being open, the entire length of noise interference device or two openings reaches specific
The noise reduction of multi-frequency noise.
5. the kitchen ventilator of wide frequency noise interference device according to claim 4, it is characterised in that: the main air duct into
The area in air port is defined as K3, K3Area be defined as M3；
The area of the air outlet of the main air duct is defined as K4, K4Area be defined as M4；
The M1=M2, M3=M4。
6. the kitchen ventilator of wide frequency noise interference device according to claim 5, it is characterised in that: the noise interference dress
The wall thickness set is defined as B, and 0.1mm≤B≤10mm.
7. the kitchen ventilator of wide frequency noise interference device according to claim 6, it is characterised in that: 0.6mm≤B≤
1.2mm。
8. the kitchen ventilator of wide frequency noise interference device according to claim 7, it is characterised in that: the noise interference dress
The monnolithic case set is c-type monnolithic case, З type monnolithic case, W type monnolithic case, V-type monnolithic case, M type monnolithic case, m type
Monnolithic case, N-type monnolithic case, N-shaped monnolithic case, undaform monnolithic case or broken line type monnolithic case.
9. according to claim 1 to the kitchen ventilator of wide frequency noise interference device described in 8 any one, it is characterised in that: institute
It states smoke machine main body and is additionally provided with noise filtering device, noise filtering device is assemblied in the inner surface of main air duct；
The noise filtering device is set as being distributed with multiple for eliminating the panel of the through-hole of multi-frequency noise；
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；
The value of the d is multiple；
The value of the b is multiple.
10. the kitchen ventilator of wide frequency noise interference device according to claim 9, it is characterised in that: the noise filtering
Device fills by adjusting the edge minimum range or noise filtering of the aperture of different through-holes or the edge of through-hole and adjacent through-holes
Set the noise reduction for reaching specific unifrequency noise or multi-frequency noise at a distance from smoke machine main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821969234.7U CN209655386U (en) | 2018-11-27 | 2018-11-27 | A kind of kitchen ventilator of wide frequency noise interference device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821969234.7U CN209655386U (en) | 2018-11-27 | 2018-11-27 | A kind of kitchen ventilator of wide frequency noise interference device |
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| Publication Number | Publication Date |
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| CN209655386U true CN209655386U (en) | 2019-11-19 |
Family
ID=68507699
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| CN201821969234.7U Active CN209655386U (en) | 2018-11-27 | 2018-11-27 | A kind of kitchen ventilator of wide frequency noise interference device |
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| Country | Link |
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2018
- 2018-11-27 CN CN201821969234.7U patent/CN209655386U/en active Active
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