CN108731065A - A kind of kitchen ventilator with noise filtering function guiding subassembly - Google Patents
A kind of kitchen ventilator with noise filtering function guiding subassembly Download PDFInfo
- Publication number
- CN108731065A CN108731065A CN201810772810.7A CN201810772810A CN108731065A CN 108731065 A CN108731065 A CN 108731065A CN 201810772810 A CN201810772810 A CN 201810772810A CN 108731065 A CN108731065 A CN 108731065A
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- Prior art keywords
- guiding subassembly
- noise
- kitchen ventilator
- filtering function
- spiral case
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
A kind of kitchen ventilator with noise filtering function guiding subassembly is provided with smoke machine main body and can eliminate the guiding subassembly of noise, and guiding subassembly is assemblied in smoke machine body interior；Multiple through-holes for eliminating noise are distributed in the guiding subassembly.The kitchen ventilator with noise filtering function guiding subassembly can efficiently use the inner space of kitchen ventilator, reach the size design of minimum and reduce overall weight, while noise reduction can be carried out at or near wind turbine in noise source.Simultaneously the present invention a kind of kitchen ventilator with noise filtering function guiding subassembly can by adjusting the aperture of different through-holes, the edge of through-hole and adjacent through-holes edge minimum range either spiral case via regions distribution reach specific unifrequency or wideband frequency noise reduction purpose.The kitchen ventilator has the advantages that low cost, reliability are high, and can effectively reduce specific unifrequency noise and broadband noise, and noise reduction wide frequency range can reduce the noise of multiple frequencies.
Description
Technical field
The present invention relates to kitchen ventilator field, more particularly to a kind of kitchen ventilator with noise filtering function guiding subassembly.
Background technology
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 increasingly paid attention to.
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 more than 1000Hz
Noise reduction technology processing.In the prior art, additional passive denoising device is increased inside kitchen ventilator for passive noise reduction needs, from
And the size of kitchen ventilator is caused to increase, and increase the cost of production and the overall weight of kitchen ventilator.
Therefore, in view of the shortcomings of the prior art, a kind of kitchen ventilator with noise filtering function guiding subassembly of offer is existing to solve
There is technical deficiency very necessary.
Invention content
A kind of band noise filtering function diversion group is provided it is an object of the invention to avoid the deficiencies in the prior art place
The kitchen ventilator of part.The kitchen ventilator with noise filtering function guiding subassembly can efficiently use the inner space of kitchen ventilator, reach
The size design of minimum and reduce overall weight.
The above-mentioned purpose of the present invention is realized by following technical measures：
A kind of kitchen ventilator with noise filtering function guiding subassembly is provided, smoke machine main body is provided with and noise can be eliminated
Guiding subassembly, guiding subassembly are assemblied in smoke machine body interior.
Multiple through-holes for eliminating noise are distributed in the guiding subassembly.
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 or logical
Bore region distribution reaches specific unifrequency noise or specific multi-frequency noise noise reduction.
Preferably, the aperture of above-mentioned through-hole is defined as d, and d≤30mm.
Preferably, the minimum range between the edge of above-mentioned through-hole and the edge of adjacent through-holes is b, and b is arbitrary more than 0
Value.
Preferably, above-mentioned d be single numerical value or multiple numerical value,
Preferably, above-mentioned b is single numerical value or multiple numerical value.
Preferably, above-mentioned smoke machine main body is provided with exhausting component, and exhausting component is assemblied in smoke machine body interior, guiding subassembly
It is assemblied in the lower section of exhausting component.
Preferably, above-mentioned exhausting component is provided with spiral case, and guiding subassembly is assemblied in the lower section of spiral case.
Preferably, multiple through-holes for eliminating noise are also distributed in above-mentioned spiral case.
Preferably, the shape of above-mentioned through-hole is circle, ellipse, triangle, square, rectangle, pentagon, six sides
At least one of shape, diamond shape or irregular shape.
Preferably, above-mentioned guiding subassembly is metal guiding subassembly, plastics guiding subassembly or alloy shell guiding subassembly.
Preferably, above-mentioned guiding subassembly is connected with reinforced structure.
Preferably, above-mentioned spiral case is metal spiral case, plastics spiral case or alloy spiral case.
Preferably, above-mentioned spiral case is connected with reinforced structure.
Preferably, above-mentioned reinforced structure is convex closure, recessed packet or reinforcing rib.
Preferably, the thickness of above-mentioned guiding subassembly and spiral case is less than 20mm.
Preferably, the elimination noisy frequency range of above-mentioned spiral case and guiding subassembly is 100Hz~8000Hz.
Preferably, above-mentioned smoke machine main body is additionally provided with multiple sidings, and multiple sidings are assemblied in the inner surface of guiding subassembly, and
There are gaps between siding and guiding subassembly, are H by the distance definition in gap1。
Preferably, above-mentioned smoke machine main body is additionally provided with sound-absorbing part, and sound arrester is assemblied in gap.
Preferably, the thickness of above-mentioned sound-absorbing part is defined as H2, and H2≤0.6H1。
Preferably, above-mentioned sound-absorbing part is fiber, PP cottons, polyester fiber, Carbon fibe or porous foam；Or
The sound-absorbing part is porous plate.
A kind of kitchen ventilator with noise filtering function guiding subassembly of the present invention is provided with smoke machine main body and can eliminate and makes an uproar
The guiding subassembly of sound, guiding subassembly are assemblied in smoke machine body interior.The guiding subassembly is distributed with multiple for eliminating noise
Through-hole.The kitchen ventilator with noise filtering function guiding subassembly can efficiently use the inner space of kitchen ventilator, reach minimum
Size design and reduce overall weight, while noise reduction can be carried out at or near wind turbine in noise source.The present invention simultaneously
A kind of kitchen ventilator with noise filtering function guiding subassembly can be by adjusting the apertures of different through-holes, edge and the phase of through-hole
The edge minimum range of adjacent through-hole either spiral case via regions distribution reach specific unifrequency or wideband frequency noise reduction mesh
's.The kitchen ventilator has the advantages that low cost, reliability are high, and can effectively reduce specific unifrequency noise and broadband is made an uproar
Sound, noise reduction wide frequency range can reduce the noise of multiple frequencies.
Description of the drawings
Using attached drawing, the present invention is further illustrated, but the content in attached drawing does not constitute any limit to the present invention
System.
Fig. 1 is the guiding subassembly structural schematic diagram of embodiment 1.
Fig. 2 is 2 guiding subassembly of embodiment and spiral case assembling schematic diagram.
Fig. 3 is the dimensional structure diagram of the spiral case in Fig. 2.
Fig. 4 is the volute structure schematic diagram of embodiment 3.
Fig. 5 is the guiding subassembly structural schematic diagram of embodiment 3.
Fig. 6 is guiding subassembly structure, siding and the sound-absorbing part schematic cross-section of embodiment 4.
In Fig. 1 to Fig. 6, include：
Guiding subassembly 1, through-hole 2, spiral case 3, reinforced structure 4, siding 5 and sound-absorbing part 6.
Specific implementation mode
Technical scheme of the present invention is described further with the following Examples.
Embodiment 1.
A kind of kitchen ventilator with noise filtering function guiding subassembly, as shown in Figure 1, being provided with smoke machine main body and can eliminate
The guiding subassembly 1 of noise, guiding subassembly 1 are assemblied in smoke machine body interior.Guiding subassembly 1 is distributed with multiple for eliminating noise
Through-hole 2.
The present invention by adjusting the apertures of different through-holes 2, the edge of through-hole 2 and the edge minimum range of adjacent through-holes 2 or
2 area distribution of person's through-hole reaches specific unifrequency or specific multi-frequency noise noise reduction.
The aperture of the through-hole 2 of the present invention is defined as d, and d≤30mm；Wherein d is multiple numerical value.The through-hole 2 of the present invention
The edge minimum range of edge and adjacent through-holes 2 is b, and b is the arbitrary value more than 0, and wherein b is multiple numerical value.Specific b and d
Respectively there are two different values, the present embodiment is multi-frequency noise noise reduction.
It should be noted that when the value of the value and d for b is unique, it can be to specific unifrequency noise noise reduction, when b and d are
It, can be to multi-frequency noise noise reduction or single-frequency noise reduction when multiple and different values.The number of the value of b and the value of d, big rootlet
Depending on actual conditions.
In aperture, d is constant, the edge of through-hole 2 and the smaller elimination of value of the edge minimum range b of adjacent through-holes 2
Target noise frequency is bigger.It is constant at the edge of through-hole 2 and the edge minimum range b of adjacent through-holes 2, aperture d's
It is worth the smaller target noise frequency to be eliminated with regard to smaller.
The shape of through-hole 2 of the present invention is circle, ellipse, triangle, square, rectangle, pentagon, hexagon, water chestnut
At least one of shape or irregular shape.The present embodiment through-hole 2 it is conveniently of circular shape because round make in technique
It is upper relatively easy, and because of the interference of not no corner angle, noise reduction is optimal.
It should be noted that the shape of through-hole 2 may be ellipse, triangle, square, rectangle, pentagon, six sides
Shape, diamond shape or irregular shape, or the combination of the shape of above-mentioned a variety of through-holes 2, specific embodiment is with reality
Depending on situation.
The denoising device principle of the present invention is such：In limited closed space, guiding subassembly 1 is traveled in noise source
When, carry out noise reduction.Sound wave is usually propagated with negative direction touching guiding subassembly 1, so most incidence wave meeting and reflection
Wave interferes.In specific distance, about a quarter of noise source wavelength away from degree at, the speed of particle reaches highest.
Guiding subassembly 1 is to carry out noise reduction using the principle of resonance, and specific noise frequency and mesh is already provided in space
The guiding subassembly 1 of frequency is marked, covibration is formed.
When resonance occurs, the sound wave of oscillation can intensely pierce into out through-hole 2 back and forth in air, and the acoustic energy of noise is herein
It is converted to friction loss in the process, achievees the effect that eliminate target frequency noise.
Spiral case and wind turbine are typically in the relatively high environment of Reynolds number inside the kitchen ventilator in air duct, therefore guiding subassembly 1
The turbulence level that whole flow field can be reduced is set while air-flow being guided to enter both sides spiral case and enters wind turbine.The main noise of kitchen ventilator
Source is from the air duct of spiral case, wind turbine and kitchen ventilator.Therefore the present invention can effectively guide air-flow to enter along guiding subassembly 1
Wind turbine both sides can greatly improve specific unifrequency noise or specific multi-frequency noise noise reduction again simultaneously.
A kind of kitchen ventilator with noise filtering function guiding subassembly of the present invention can be by adjusting the aperture of different through-holes 2
With the edge minimum range at the edge and adjacent through-holes 2 of through-hole 2, specific unifrequency noise or specific multi-frequency noise noise reduction.
Therefore the present invention can reach specific unifrequency noise or specific multi-frequency by the division in 2 region of through-hole, arrangement and arrangement
Noise noise reduction.The kitchen ventilator with noise filtering function guiding subassembly can efficiently use the inner space of kitchen ventilator, reach most
The size design of smallization and overall weight is reduced, while noise reduction can be carried out at or near noise source, that is, wind turbine.The oil smoke
Machine has the advantages that low cost, reliability are high, and can effectively reduce specific unifrequency noise and broadband noise.
Embodiment 2.
A kind of kitchen ventilator with noise filtering function guiding subassembly, as shown in Figures 2 and 3, other characteristics and 1 phase of embodiment
Together, the difference is that：Smoke machine main body is provided with exhausting component, and exhausting component is assemblied in smoke machine body interior, and guiding subassembly 1 fills
Lower section assigned in exhausting component.
Exhausting component is provided with spiral case 3, and guiding subassembly 1 is assemblied in the lower section of spiral case 3.Multiple be used for also is distributed in spiral case 3
Eliminate the through-hole 2 of noise.
The denoising device principle of the present embodiment is such：In limited closed space, diversion group is traveled in noise source
When part 1 or spiral case 3, noise reduction is carried out.Sound wave is usually touching guiding subassembly 1 or spiral case 3 is propagated with negative direction, so greatly
Partial incidence wave can be interfered with back wave.In specific distance, about a quarter of noise source wavelength away from degree at, grain
The speed of son reaches highest.
Guiding subassembly 1 or spiral case 3 are to carry out noise reduction, specific noise frequency and water conservancy diversion in space using the principle of resonance
The target frequency that component 1 is arranged forms covibration.
When resonance occurs, the sound wave of oscillation can intensely pierce into out through-hole 2 back and forth in air, and the acoustic energy of noise is herein
It is converted to friction loss in the process, achievees the effect that eliminate target frequency noise.
Compared with Example 1, spiral case 3 increases through-hole 2 and the guiding subassembly 1 of embodiment 1 plays identical noise reduction work(
Can, the noise reduction capability of the kitchen ventilator greatly increased.
Embodiment 3.
A kind of kitchen ventilator with noise filtering function guiding subassembly, as shown in Figures 4 and 5, other features and 1 phase of embodiment
Together, the difference is that, the guiding subassembly 1 of the present embodiment is specially metal guiding subassembly 1.Spiral case 3 is specially metal spiral case 3.
It is 100Hz~8000Hz that spiral case 3 and guiding subassembly 1, which eliminate noisy frequency range,.
It should be noted that the guiding subassembly 1 or plastics guiding subassembly 1 or alloy guiding subassembly 1 of the present invention.Snail
Shell 3 or plastics spiral case 3 or alloy spiral case 3, depending on specific embodiment is with actual conditions.
The guiding subassembly 1 of the present invention and the thickness of spiral case 3 are less than 20mm, because of the blocked up weight that can increase kitchen ventilator totality
Amount.
The guiding subassembly 1 and spiral case 3 of the present embodiment are all connected with reinforced structure 4.Specific reinforced structure 4 is to reinforce
Muscle.
It should be noted that the one of which of reinforced structure 4 of the invention or reinforcing rib, convex closure or recessed packet,
Can be a variety of arbitrary combinations, depending on specific embodiment is with actual conditions.
Compared with Example 1, guiding subassembly 1 and the more rigid of spiral case 3 are low resistance structure to the present embodiment.Low resistance knot
Structure can make incidence wave and back wave have out of phase under the specific distance with reflecting surface, can phase to the sound wave of noise
It mutually offsets, to reduce the intensity of noise.The guiding subassembly 1 and spiral case 3 of the metal of the present embodiment have high temperature resistant, durable excellent
Point.
Embodiment 4.
A kind of kitchen ventilator with noise filtering function guiding subassembly, as shown in fig. 6, other features are same as Example 1, no
It is with place, the present embodiment smoke machine main body is additionally provided with multiple sidings 5, and multiple sidings 5 are assemblied in the interior table of guiding subassembly 1
Face, and there are gaps between siding 6 and guiding subassembly 1, are H by the distance definition in gap1。
Smoke machine main body is additionally provided with sound-absorbing part 6, and sound-absorbing part 6 is assemblied in gap.The thickness of sound-absorbing part 6 is defined as H2, and H2≤
0.6H1。
The density and material of sound-absorbing part 6 also have important influence, sound wave can directly through the sound-absorbing part 6 of extremely-low density,
The frictional wear of acoustic energy can not be increased.Under high density, noise sound wave then can be reflected away directly.
Therefore the sound-absorbing part 14 of the present invention is preferably fiber, PP cottons, polyester fiber, Carbon fibe or porous foam.Or
Sound-absorbing part 14 is porous plate.
The present embodiment increases sound-absorbing part 6 compared with embodiment 1, and the setting of sound-absorbing part 6 can increase the consume of friction, enhance noise reduction
Effect.
Embodiment 5.
A kind of design of the kitchen ventilator with noise filtering function guiding subassembly：
Target frequency：8000Hz.
The aperture d=10mm of through-hole 2, the edge of through-hole 2 and the edge minimum range b=23mm of adjacent through-holes 2.
It should be noted that the present embodiment only lists the design parameter for the single goal frequency that frequency is 8000Hz, not table
The generation present invention can only be directed to the noise of this frequency, only corresponding different parameter, and the present invention can eliminate specific unifrequent
Noise.
Embodiment 6.
A kind of design of the kitchen ventilator with noise filtering function guiding subassembly：
Target frequency：100Hz.
The aperture d=2mm of through-hole 2, the edge of through-hole 2 and the edge minimum range b=23mm of adjacent through-holes 2.
It should be noted that the present embodiment only lists the design parameter for the single goal frequency that frequency is 7000Hz, not table
The generation present invention can only be directed to the noise of this frequency, only corresponding different parameter, and the present invention can eliminate specific unifrequent
Noise.
Embodiment 7.
A kind of design of the kitchen ventilator with noise filtering function guiding subassembly：
Target frequency 1：800Hz.
The aperture d=4mm of through-hole 2, the edge of through-hole 2 and the edge minimum range b=18mm of adjacent through-holes 2.
Target frequency 2：800Hz.
The aperture d=5mm of through-hole 2, the edge of through-hole 2 and the edge minimum range b=23mm of adjacent through-holes 2.
The present embodiment lists two different d and b combinations, can generate identical target frequency.
It should be noted that the present embodiment only lists the design parameter of 800Hz target frequencies, the present invention can also be directed to not
With unifrequent noise, target frequency is obtained by different parameter regulations, identical target frequency also can be by other parameter tune
Section combination obtains identical effect.
Embodiment 8.
A kind of design of the kitchen ventilator with noise filtering function guiding subassembly：
Target frequency 1：7000Hz.
The aperture d=10mm of through-hole 2, the edge of through-hole 2 and the edge minimum range b=24mm of adjacent through-holes 2.
Target frequency 2：800Hz.
The aperture d=5mm of through-hole 2, the edge of through-hole 2 and the edge minimum range b=23mm of adjacent through-holes 2.
Therefore the kitchen ventilator only can effectively eliminate pair in the characteristic with the corresponding through-hole of above-mentioned two target frequency 2
The noise for the frequency answered.
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 noise of the invention that can eliminate multi-frequency reach wideband frequency drop
It makes an uproar purpose.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than is protected to the present invention
The limitation of range, although being explained in detail to the present invention with reference to preferred embodiment, those skilled in the art should manage
Solution, can be modified or replaced equivalently technical solution of the present invention, without departing from the essence and model of technical solution of the present invention
It encloses.
Claims (10)
1. a kind of kitchen ventilator with noise filtering function guiding subassembly, it is characterised in that：It is provided with smoke machine main body and can eliminate
The guiding subassembly of noise, guiding subassembly are assemblied in smoke machine body interior；
Multiple through-holes for eliminating noise are distributed in the guiding subassembly.
2. the kitchen ventilator according to claim 1 with noise filtering function guiding subassembly, it is characterised in that：By adjusting not
Edge minimum range or via regions distribution with the aperture of through-hole, the edge of through-hole and adjacent through-holes reaches specific unifrequency
Noise or specific multi-frequency noise noise reduction.
3. the kitchen ventilator of noise filtering function spiral case according to claim 2, it is characterised in that：The aperture of the through-hole is fixed
Justice is d, and d≤30mm.
4. the kitchen ventilator according to claim 3 with noise filtering function guiding subassembly, it is characterised in that：The through-hole
Minimum range between edge and the edge of adjacent through-holes is b, and b is the arbitrary value more than 0.
5. the kitchen ventilator according to claim 4 with noise filtering function guiding subassembly, it is characterised in that：The d is single
One numerical value or multiple numerical value；
The b is single numerical value or multiple numerical value.
6. the kitchen ventilator according to claim 5 with noise filtering function guiding subassembly, it is characterised in that：The smoke machine master
Body is provided with exhausting component, and exhausting component is assemblied in smoke machine body interior, and guiding subassembly is assemblied in the lower section of exhausting component；
The exhausting component is provided with spiral case, and guiding subassembly is assemblied in the lower section of spiral case；
Multiple through-holes for eliminating noise are also distributed in the spiral case.
7. the kitchen ventilator according to claim 5 or 6 with noise filtering function guiding subassembly, it is characterised in that：It is described logical
The shape in hole is in circle, ellipse, triangle, square, rectangle, pentagon, hexagon, diamond shape or irregular shape
It is at least one.
8. the kitchen ventilator according to claim 7 with noise filtering function guiding subassembly, it is characterised in that：The diversion group
Part is metal guiding subassembly, plastics guiding subassembly or alloy shell guiding subassembly；
The guiding subassembly is connected with reinforced structure.
9. the kitchen ventilator according to claim 8 with noise filtering function guiding subassembly, it is characterised in that：The spiral case is
Metal spiral case, plastics spiral case or alloy spiral case；
The spiral case is connected with reinforced structure；
The reinforced structure is convex closure, recessed packet or reinforcing rib；
The thickness of the guiding subassembly and spiral case is less than 20mm；
The elimination noisy frequency range of the spiral case and guiding subassembly is 100Hz~8000Hz.
10. the kitchen ventilator according to claim 9 with noise filtering function guiding subassembly, it is characterised in that：The smoke machine
Main body is additionally provided with multiple sidings, and multiple sidings are assemblied in the inner surface of guiding subassembly, and exist between siding and guiding subassembly
The distance definition in gap is H by gap1；
The smoke machine main body is additionally provided with sound-absorbing part, and sound arrester is assemblied in gap；
The thickness of the sound-absorbing part is defined as H2, and H2≤0.6H1；
The sound-absorbing part is fiber, PP cottons, polyester fiber, Carbon fibe or porous foam；Or
The sound-absorbing part is porous plate.
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| CN201810772810.7A CN108731065A (en) | 2018-07-14 | 2018-07-14 | A kind of kitchen ventilator with noise filtering function guiding subassembly |
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| CN201810772810.7A CN108731065A (en) | 2018-07-14 | 2018-07-14 | A kind of kitchen ventilator with noise filtering function guiding subassembly |
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| CN111412511A (en) * | 2020-05-07 | 2020-07-14 | 合肥柏隆科技发展有限公司 | Noise-reducing range hood |
| CN113738664A (en) * | 2021-09-15 | 2021-12-03 | 杭州帅丰科技有限公司 | Noise reduction fan |
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