CN109780603A - A kind of kitchen ventilator spiral case and kitchen ventilator with noise interference device - Google Patents
A kind of kitchen ventilator spiral case and kitchen ventilator with noise interference device Download PDFInfo
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- CN109780603A CN109780603A CN201811420860.5A CN201811420860A CN109780603A CN 109780603 A CN109780603 A CN 109780603A CN 201811420860 A CN201811420860 A CN 201811420860A CN 109780603 A CN109780603 A CN 109780603A
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Abstract
A kind of kitchen ventilator spiral case with noise interference device, is provided with shell main body and the noise interference device for reducing multi-frequency noise, and noise interference device is assemblied in shell main body.The present invention 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 in noise interference channel or two openings.The kitchen ventilator spiral case 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.A kind of kitchen ventilator is able to maintain long-term good noise reduction effect, which has the advantages that inexpensive, reliability is high.
Description
Technical field
The present invention relates to kitchen ventilator field, in particular to a kind of kitchen ventilator spiral case and oil smoke with noise interference device
Machine.
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 spiral case with noise interference device and kitchen ventilator to solve
Certainly prior art deficiency is very necessary.
Summary of the invention
One of present invention purpose is to avoid the deficiencies in the prior art place and provide a kind of dry with noise
Relate to the kitchen ventilator spiral case and kitchen ventilator of device.The kitchen ventilator spiral case with noise interference device can reduce specific multi-frequency and make an uproar
Sound.
Above-mentioned purpose of the invention is realized by following technical measures:
A kind of kitchen ventilator spiral case with noise interference device is provided, is provided with shell main body and for reducing multi-frequency noise
Noise interference device, noise interference device is assemblied in shell main body.
First is preferred, and above-mentioned noise interference device is assemblied in the volute tongue region of shell main body.
Second is preferred, and above-mentioned noise interference device is distributed in the outer surface of shell main body.
Third is preferred, and above-mentioned noise interference device is embedded noise interference device；The embedded noise interference dress
Setting in the volute tongue region of shell main body.
Preferably, above-mentioned noise interference device is provided with noise interference channel and two openings.
Preferably, the horizontal position of above-mentioned two opening is different.
One of opening is defined as K1, another opening is defined as K2。
Preferably, above-mentioned noise interference device is by adjusting two areas being open, the entire length in noise interference channel
Or the shortest distance of two openings reaches the noise reduction of specific multi-frequency noise.
Preferably, the length in above-mentioned noise interference channel is defined as La, and 0 < La≤1000mm。
Preferably, above-mentioned K1And K2The shortest distance be defined as Δ L, and La> Δ L > 5mm.
Preferably, the monnolithic case in above-mentioned noise interference channel 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, the shape of the cross section in above-mentioned noise interference channel be circle, ellipse, rectangle, triangle, diamond shape or
Arbitrary shape of the person in addition to above-mentioned shape.
Preferably, the diameter in above-mentioned noise interference channel is D, and 0 < D≤100mm.
Preferably, the value of above-mentioned D is multiple.
Preferably, above-mentioned noise interference channel is provided with multiple.
A kind of kitchen ventilator spiral case with noise interference device of the invention, is provided with shell main body and for reducing multi-frequency
The noise interference device of noise, noise interference device are assemblied in shell main body.The present invention is by adjusting two of noise interference device
The shortest distance of the area of opening, the entire length in noise interference channel or two openings reaches the drop of specific multi-frequency noise
It makes an uproar.The kitchen ventilator spiral case is able to maintain long-term good noise reduction effect, which has high excellent of low cost, reliability
Point.The noise interference device is the resonance amplitude and phase through specific noise frequency, with the noise phase transmitted in main air duct pipe
Mutually interfere to lower the amplitude of this noise frequency, the noise reduction for reaching specific multi-frequency noise is reduced.Noise interference dress
The material set is anticorrosive, resist chemical and is hardly damaged.
A kind of kitchen ventilator is provided another object of the present invention is to avoid the deficiencies in the prior art place.The oil smoke function
Reducing specific multi-frequency noise is reduced.
Above-mentioned purpose of the invention is realized by following technical measures:
A kind of kitchen ventilator, the kitchen ventilator of the kitchen ventilator spiral case with the above characteristics with noise interference device are provided.
The kitchen ventilator has the kitchen ventilator spiral case with noise interference device.The kitchen ventilator is able to maintain long-term good noise reduction
Effect, the noise interference device have the advantages that low cost, reliability are high.The oil smoke function reduces specific multi-frequency noise and carries out
It reduces.
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 kitchen ventilator spiral case with noise interference device of embodiment 1.
Fig. 2 is the length indication in noise interference device schematic cross-section and noise interference channel.
Fig. 3 is noise interference device schematic cross-section and K1And K2The shortest distance Δ L mark.
Fig. 4 is the schematic diagram of the monnolithic case in noise interference channel, and (1) in Fig. 4 is c-type monnolithic case, in Fig. 4
It (2) is З type monnolithic case, (3) in Fig. 4 are W type monnolithic case, and (4) in Fig. 4 are V-type monnolithic case, and (5) in Fig. 4 are
M type monnolithic case, (6) in Fig. 4 are m type monnolithic case, and (7) in Fig. 4 are N-type monnolithic case, and (8) in Fig. 4 are that N-shaped is whole
External shape, (9) in Fig. 4 are undaform monnolithic case, and (10) in Fig. 4 are undaform monnolithic case, and (11) in Fig. 4 are wave
Wave type monnolithic case, (12) in Fig. 4 are arbitrary shape, and (13) in Fig. 4 are arbitrary shape, and (14) in Fig. 4 are arbitrary shape
Shape, (15) in Fig. 4 are arbitrary shape, and (16) in Fig. 4 are arbitrary shape, and (17) in Fig. 4 are broken line type monnolithic case, figure
(18) in 4 are broken line type monnolithic case.
Fig. 5 is the schematic diagram of the shape of the cross section in noise interference channel, and (1) in Fig. 5 is circle, and (2) in Fig. 5 are
Ellipse, (3) in Fig. 5 are rectangle, and (4) in Fig. 5 are triangle, and (5) in Fig. 5 are diamond shape, and (6) in Fig. 5 are any
Shape, (7) in Fig. 5 are arbitrary shape, and (8) in Fig. 5 are arbitrary shape.
Fig. 6 is the schematic diagram of the diameter D in noise interference channel.
Fig. 7 is a kind of kitchen ventilator volute structure schematic diagram with noise interference device of embodiment 2.
Fig. 8 is a kind of kitchen ventilator volute structure schematic diagram with noise interference device of embodiment 3.
Fig. 9 is the enlarged diagram of the Z region of Fig. 8.
Fig. 1 includes into Fig. 9:
Noise interference device 1, noise interference channel 11,
Shell 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 spiral case with noise interference device, as shown in Figures 1 to 6, be provided with shell main body 2 and for reducing
The noise interference device 1 of multi-frequency noise, noise interference device 1 are assemblied in shell main body 2.
There are three types of the assembly methods of noise interference device 1 of the invention, the first is assemblied in shell master for noise interference device 1
The volute tongue region of body 2.The outer surface of shell main body 2 is distributed in for noise interference device 1 second.The third is noise interference device
1 is embedded noise interference device 1, and embedded noise interference device 1 is located at the volute tongue region of shell main body 2.Specific embodiment
Noise interference device 1 be that noise interference device 1 is assemblied in the volute tongue region of shell main body 2.
Noise interference device 1 is provided with noise interference channel 11 and two openings.The horizontal position of two openings is different.It will
One of opening is defined as K1, another opening is defined as K2.Noise interference device 1 by adjusting two be open areas, make an uproar
The shortest distance of the entire length in acoustic interference channel 11 or two openings reaches the noise reduction of specific multi-frequency noise.
The length in noise interference channel 11 of the invention is defined as La, and 0 < La≤ 1000mm, the L of the present embodimentaSpecifically
For 300mm.
It should be noted that the length in noise interference channel 11 of the invention can be 300mm, or be greater than 0, be less than
The random length of 1000mm, depending on specific length is with actual conditions.
K of the invention1And K2The shortest distance be defined as Δ L, and La> Δ L > 5mm, the Δ L of the present embodiment are specially
100mm。
It should be noted that K of the invention1And K2The shortest distance can be 100mm, or be greater than 5mm, be less than La
Any distance, depending on specific distance is with actual conditions.
The monnolithic case in noise interference channel 11 of the invention is preferably N-shaped monnolithic case, or c-type is whole outer
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, wave
Wave type monnolithic case, broken line type monnolithic case or the arbitrary shape in addition to above-mentioned shape, specific monnolithic case is according to reality
Depending on the situation of border.
C-type monnolithic case of the invention, as shown in (1) in Fig. 4.
З type monnolithic case of the invention, as shown in (2) in Fig. 4.
W type monnolithic case of the invention, as shown in (3) in Fig. 4.
V-type monnolithic case of the invention, as shown in (4) in Fig. 4.
M type monnolithic case of the invention, as shown in (5) in Fig. 4.
M type monnolithic case of the invention, as shown in (6) in Fig. 4.
N-type monnolithic case of the invention, as shown in (7) in Fig. 4.
N-shaped monnolithic case of the invention, as shown in (8) in Fig. 4.
Undaform monnolithic case of the invention is needed as shown in (9) in Fig. 4, (11) in (10) and Fig. 4 in such as Fig. 4
Illustrate, the undaform monnolithic case in the present invention is not limited to (9) in Fig. 4, in (10) and Fig. 4 in such as Fig. 4
(11) these three undaform monnolithic cases, any other undaform monnolithic case also comply with undaform monnolithic case of the present invention
It is required that also within the scope of the present invention.
Arbitrary shape of the invention, such as (12) in Fig. 4, (13) in such as Fig. 4, (14) in Fig. 4, (15) in Fig. 4
It is shown with (16) in Fig. 4, it should be noted that, the arbitrary shape in the present invention is not limited to (12) in Fig. 4, in such as Fig. 4
(13), this 5 kinds of arbitrary shapes of (14) in Fig. 4, (16) in (15) and Fig. 4 in Fig. 4, other arbitrary shapes also comply with this
The requirement of invention arbitrary shape, also within the scope of the present invention.
Broken line type monnolithic case of the invention, as shown in (17) in Fig. 4 and (18) in Fig. 4, it should be noted that, this hair
Broken line type monnolithic case in bright is not limited to this 2 kinds of broken line type monnolithic cases of (17) in Fig. 4 and (18) in Fig. 4,
His broken line type monnolithic case also complies with the requirement of broken line type monnolithic case of the present invention, also within the scope of the present invention.
The shape of c-type monnolithic case, N-shaped monnolithic case, m type monnolithic case or undaform monnolithic case etc. does not have corner angle
Shape, it is possible to reduce sound wave the energy in noise interference channel 11 loss, thus improve with the effect of noise source sound wave interference,
And then improve the effect of noise reduction.
The cross section in noise interference channel 11 of the invention it is conveniently of circular shape, or ellipse, rectangle, three
Angular, diamond shape or the arbitrary shape in addition to above-mentioned shape, the shape of specific cross section according to the actual situation depending on.
The cross section in noise interference channel 11 of the invention is circle, as shown in (1) in Fig. 5.
The cross section in noise interference channel 11 of the invention is ellipse, as shown in (2) in Fig. 5.
The cross section in noise interference channel 11 of the invention is rectangle, as shown in (3) in Fig. 5.It should be noted that this hair
Rectangle in bright is not limited to this rectangle of (3) in Fig. 5, other rectangles also comply with the requirement of rectangle of the present invention, also at this
In the protection scope of invention.
The cross section in noise interference channel 11 of the invention is triangle, as shown in (4) in Fig. 5.
The cross section in noise interference channel 11 of the invention is diamond shape, as shown in (5) in Fig. 5.
The cross section in noise interference channel 11 of the invention is arbitrary shape, such as (6) in Fig. 5, (7) in Fig. 5 and Fig. 5
In (8) shown in.It should be noted that the arbitrary shape in the present invention is not limited to (6) in Fig. 5, in (7) and Fig. 5 in Fig. 5
(8) this 3 kinds of rectangles, other arbitrary shapes also comply with the requirement of arbitrary shape of the present invention, also in protection scope of the present invention
It is interior.
The cross section in noise interference channel 11 is round or ellipse etc. without angular shape, it is possible to reduce sound wave exists
The loss of the energy of noise interference device 1 to improve the effect with noise source sound wave interference, and then improves the effect of noise reduction.
The diameter in noise interference channel 11 of the invention is D, and 0 < D≤100mm, and wherein the value of D is multiple.With this reality
For applying example, the shape of the monnolithic case N-shaped monnolithic case in noise interference channel 11, cross section is circle, and the value of D is more
A, i.e. the cross section in the noise interference channel 11 of the present embodiment is the circle of multiple and different internal diameters and global shape is c-type entirety
The noise interference device 1 of shape.
The noise interference channel 11 of the present embodiment be provided with it is multiple, specially 9.It should be noted that noise of the invention is dry
Relating to channel 11 can be with 9, or the arbitrary number greater than 2, specific performance according to the actual situation depending on.
The parameter in multiple noise interference channels 11 of the present embodiment can be the same or different.The parameter that difference is is made an uproar
Acoustic interference channel 11, the specific different f of the basic frequency in different noise interference channels 110,1And f0,2, therefore can reduce wider
The noise of frequency.For the noise interference channel 11 with identical parameters, the noise reduction effect of identical frequency can be improved.
The principle of the present invention are as follows: noise interference device 1 (Herschel-Quincke pipe) is according to the interference between sound wave
Achieve the effect that reduce sound.Noise interference device 1 be according between sound wave resonance and interference achieve the effect that reduce sound.
Because noise interference device 1 has multiple resonant frequencies: f0,1、f0,2、fs1And fs2.The broadband noise waves that kitchen ventilator generates exist
It is propagated in main air duct 2, when encountering noise interference device, broadband noise waves are divided into first via broadband noise waves and second and have a lot of social connections
Frequency noise wave, the continuation of first via broadband noise waves are propagated in main air duct 2；Second has a lot of social connections, and to enter noise dry for frequency noise wave
It relates to device 1 and resonates with noise interference device 1, and one of them from noise interference device is open out and imports main 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, the second frequency of having a lot of social connections is made an uproar
Sound wave enters noise interference device 1 and resonates with noise interference device 1, and one of them from noise interference device 1 is opened
Mouth, which comes out, imports main air duct.From the first via broadband noise waves that noise interference device 1 propagates from after importing main air duct 2 with
What main air duct 2 was propagated second has a lot of social connections frequency noise wave there are phase difference, and first via broadband noise waves and the second frequency of having a lot of social connections are made an uproar
Sound wave interferes to form interference broadband noise waves, and interference broadband noise waves subtract relative to the amplitude of broadband noise waves
Weak, 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 interference dress of the present invention
Two basic frequencies and multiple harmonic frequencies can be formed so as to mutually relate to multi-frequency noise by setting 1, achieve the purpose that wideband noise reduction.
This has the kitchen ventilator spiral case of noise interference device, is provided with shell main body 2 and making an uproar for reducing multi-frequency noise
Acoustic interference device 1, noise interference device 1 are assemblied in shell main body 2.The present invention is by adjusting two of noise interference device 1 openings
Area, the entire length in noise interference channel 11 or the shortest distances of two openings reach the drop of specific multi-frequency noise
It makes an uproar.The kitchen ventilator spiral case is able to maintain long-term good noise reduction effect, which has low cost, reliability high
Advantage.The noise interference device 1 is the resonance amplitude and phase through specific noise frequency, with the noise transmitted in main air duct pipe
It interferes and reaches the noise reduction of specific multi-frequency noise to lower the amplitude of this noise frequency and reduced.The noise interference
The material of device 1 is anticorrosive, resist chemical and is hardly damaged.
Embodiment 2.
A kind of kitchen ventilator spiral case with noise interference device, as shown in fig. 7, other features are same as Example 1, it is different
Place is that noise interference device 1 of the invention is distributed in the outer surface of shell main body 2.
Compared with Example 1, the noise interference device 1 of this implementation is distributed in the outer surface of entire shell main body 2, thus in shell
Main body 2 carries out noise reduction on a large scale, is better protected from noise and passes to external environment.
Embodiment 3.
A kind of kitchen ventilator spiral case with noise interference device, as shown in FIG. 8 and 9, other features are same as Example 1,
The difference is that noise interference device 1 of the invention is embedded noise interference device 1.1, embedded noise interference device
In the volute tongue region of shell main body 2.
Compared with Example 1, the noise interference device 1 of this implementation is embedded noise interference device 1, noise interference device
1 is non-exposed structure, and kitchen ventilator spiral case appearance can be made clean and tidy.
Embodiment 4.
A kind of kitchen ventilator has the kitchen ventilator of the kitchen ventilator spiral case with noise interference device.
The kitchen ventilator has the kitchen ventilator spiral case with noise interference device.The kitchen ventilator is able to maintain long-term good noise reduction
Effect, the noise interference device 1 have the advantages that low cost, reliability are high.The oil smoke function reduce specific multi-frequency noise into
Row reduces.
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, those skilled in the art 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 (12)
1. a kind of kitchen ventilator spiral case with noise interference device, it is characterised in that: it is provided with shell main body and for reducing multifrequency
The noise interference device of rate noise, noise interference device are assemblied in shell main body.
2. the kitchen ventilator spiral case according to claim 1 with noise interference device, it is characterised in that: the noise interference
Device is assemblied in the volute tongue region of shell main body.
3. the kitchen ventilator spiral case according to claim 1 with noise interference device, it is characterised in that: the noise interference
Device is distributed in the outer surface of shell main body.
4. the kitchen ventilator spiral case according to claim 1 with noise interference device, it is characterised in that: the noise interference
Device is embedded noise interference device；
The embedded noise interference device is located at the volute tongue region of shell main body.
5. having the kitchen ventilator spiral case of noise interference device according to claim 2 to 4 any one, it is characterised in that:
The noise interference device is provided with noise interference channel and two openings；
The horizontal position of described two openings is different；
One of opening is defined as K1, another opening is defined as K2；
The noise interference device is by adjusting two areas being open, the entire length in noise interference channel or two openings
The shortest distance reach the noise reduction of specific multi-frequency noise.
6. the kitchen ventilator spiral case according to claim 5 with noise interference device, it is characterised in that: the noise interference
The length in channel is defined as La, and 0 < La≤1000mm。
7. the kitchen ventilator spiral case according to claim 6 with noise interference device, it is characterised in that: the K1And K2's
The shortest distance is defined as Δ L, and La> Δ L > 5mm.
8. the kitchen ventilator spiral case according to claim 7 with noise interference device, it is characterised in that: the noise interference
The monnolithic case in channel 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, broken line type monnolithic case remove above-mentioned shape
Arbitrary shape other than shape.
9. the kitchen ventilator spiral case according to claim 8 with noise interference device, it is characterised in that: the noise interference
The shape of the cross section in channel is circle, ellipse, rectangle, triangle, diamond shape or the arbitrary shape in addition to above-mentioned shape.
10. the kitchen ventilator spiral case according to claim 9 with noise interference device, it is characterised in that: the noise is dry
The diameter in channel is related to as D, and 0 < D≤100mm；
The value of the D is multiple.
11. the kitchen ventilator spiral case according to claim 10 with noise interference device, it is characterised in that: the noise is dry
Relate to channel be provided with it is multiple.
12. a kind of kitchen ventilator has the kitchen ventilator snail with noise interference device such as claim 1 to 11 any one characteristic
The kitchen ventilator of shell.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114526267A (en) * | 2020-11-23 | 2022-05-24 | 广东美的白色家电技术创新中心有限公司 | Fan and range hood |
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| CN114526267B (en) * | 2020-11-23 | 2024-01-30 | 广东美的白色家电技术创新中心有限公司 | Fan and range hood |
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