CN108731066A - A kind of kitchen ventilator that can reduce specific unifrequency noise - Google Patents
A kind of kitchen ventilator that can reduce specific unifrequency noise Download PDFInfo
- Publication number
- CN108731066A CN108731066A CN201810772814.5A CN201810772814A CN108731066A CN 108731066 A CN108731066 A CN 108731066A CN 201810772814 A CN201810772814 A CN 201810772814A CN 108731066 A CN108731066 A CN 108731066A
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- Prior art keywords
- noise
- panel
- curved surface
- kitchen ventilator
- filtering device
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Classifications
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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
- F24C15/2035—Arrangement or mounting of filters
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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)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
A kind of kitchen ventilator that can reduce specific unifrequency noise, is provided with smoke machine main body and can reduce the curved surface noise filtering device of specific frequency noise, curved surface noise filtering device is assemblied in smoke machine main body.Either reach the noise reduction of specific frequency noise at a distance from the edge minimum range or curved surface noise filtering device of the edge of through-hole and adjacent through-holes and smoke machine main body by adjusting the aperture of different through-holes.The curved surface noise filtering device can keep long-term good noise reduction, which, which has, is easy to arrange, and dust, the grease on surface etc. can remove cleaning.The curved surface noise filtering device has the advantages that low cost, reliability are high.The material of the curved surface noise filtering device is anticorrosive, chemical resistance and is hardly damaged.Specific noise frequency, which can be directed to, to be reduced.
Description
Technical field
The present invention relates to kitchen ventilator field, more particularly to a kind of kitchen ventilator that can reduce specific unifrequency noise.
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.And the specific noise frequency of reduction can be arranged in the passive denoising device of the prior art, for not
Same kitchen ventilator, the frequency for the maximum noise that may mainly generate is not and identical, the kitchen ventilator of the prior art, is directed to main
Frequency into noise reduction.
Therefore in view of the shortcomings of the prior art, providing a kind of kitchen ventilator of the specific unifrequency noise of energy reduction to solve existing skill
Art deficiency is very necessary.
Invention content
There is provided a kind of energy reduction specific unifrequency noise it is an object of the invention to avoid the deficiencies in the prior art place
Kitchen ventilator.The oil smoke function drop that specific unifrequency noise can be reduced reduces specific unifrequency noise.
The above-mentioned purpose of the present invention is realized by following technical measures：
A kind of kitchen ventilator that can reduce specific unifrequency noise is provided, smoke machine main body is provided with and specific frequency can be reduced and make an uproar
The curved surface noise filtering device of sound, curved surface noise filtering device are assemblied in smoke machine main body.
Preferably, above-mentioned curved surface noise filtering device is set as that multiple panels for offset noise through-hole are distributed with.
It is further preferred that above-mentioned panel is curved slab.
The present invention by adjusting the aperture of different through-holes or the edge of through-hole and adjacent through-holes edge minimum range or
Person's curved surface noise filtering device reaches the noise reduction of specific frequency noise at a distance from smoke machine main body.
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 more than 0.
Preferably, the thickness of above-mentioned panel is less than 20mm.
Preferably, above-mentioned panel is provided with multiple.
Preferably, above-mentioned multiple panel-mounteds are at continuous limited encirclement structure or discontinuous limited encirclement structure.
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 curved surface 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 and 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 cottons, polyester fiber, Carbon fibe or porous foam；Or
The sound-absorbing part is porous plate.
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.
Preferably, it is 100Hz~8000Hz that above-mentioned curved surface noise filtering device, which eliminates noisy frequency range,.
A kind of kitchen ventilator that can reduce specific unifrequency noise of the present invention, is provided with smoke machine main body and can reduce specific frequency
The curved surface noise filtering device of rate noise, curved surface noise filtering device are assemblied in smoke machine main body.By adjusting the hole of different through-holes
Diameter either the edge minimum range or curved surface noise filtering device of the edge of through-hole and adjacent through-holes at a distance from smoke machine main body
Reach the noise reduction of specific frequency noise.The curved surface noise filtering device can keep long-term good noise reduction, the curved surface noise
Filter device, which has, to be easy to arrange, and dust, the grease on surface etc. can remove cleaning.The curved surface noise filtering device have it is low at
Originally, the high advantage of reliability.The material of the curved surface noise filtering device is anticorrosive, chemical resistance and is hardly damaged.It being capable of needle
Specific noise frequency is reduced.
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 a kind of range hood structure schematic diagram that can reduce specific unifrequency noise of embodiment 1.
Fig. 2 is the panel schematic diagram in Fig. 1, and the A in Fig. 2 is front view, and the B in Fig. 2 is vertical view.
Fig. 3 is the curved surface noise filtering apparatus structure schematic diagram of embodiment 2.
Fig. 4 is a kind of range hood structure schematic diagram that can reduce specific unifrequency noise of embodiment 3.
Fig. 5 is the panel construction schematic diagram of embodiment 5.
Fig. 6 is the curved surface noise filtering apparatus structure schematic diagram of embodiment 6.
In Fig. 1 to Fig. 6, include：
Curved surface noise filtering device 1, panel 11, through-hole 111, reinforced structure 112, sound-absorbing part 12,
Smoke machine main body 2.
Specific implementation mode
Technical scheme of the present invention is described further with the following Examples.
Embodiment 1.
A kind of energy reduces the kitchen ventilator of specific unifrequency noise, as shown in Fig. 1 to 2, is provided with smoke machine main body 2 and can reduce
The curved surface noise filtering device 1 of specific frequency noise, curved surface noise filtering device 1 are assemblied in smoke machine main body 2.
Curved surface noise filtering device 1 is set as that multiple panels 11 for offset noise through-hole 111 are distributed with.Panel 11 is
Curved slab 11.
The present invention by adjusting the aperture of different through-holes 111 or the edge of edge and the adjacent through-holes 111 of through-hole 111 most
Small distance or curved surface noise filtering device 1 reach the noise reduction of specific frequency noise at a distance from smoke machine main body 2.
The aperture of the through-hole 111 of the present invention is defined as d, and d≤30mm.The side at the edge and adjacent through-holes 111 of through-hole 111
Edge minimum range is b, and b is the arbitrary value more than 0.The thickness of the panel 11 of the present invention is less than 20mm.
The present invention is constant in aperture d, the value at the edge of through-hole 111 and the edge minimum range b of adjacent through-holes 111
The target noise frequency of smaller elimination is bigger.It is constant at the edge of through-hole 111 and the edge minimum range b of adjacent through-holes 111
In the case of, the smaller target noise frequency to be eliminated of the value of aperture d is with regard to smaller.
There are gaps between the 2 immediate wall surface of panel 11 and smoke machine main body of the present embodiment, by the distance definition in gap
For H1。
The denoising device principle of the present invention：Curved surface noise filtering device 1 can be in limited closed space, in noise source
When traveling to curved surface noise filtering device 1, noise reduction is carried out.Sound wave is usually touching curved surface noise filtering device 1 with negative direction
It propagates, so most incidence wave can be interfered with back wave.In a quarter of specific distance about noise source wavelength
Away from i.e. H at degree1, the speed of particle reaches highest, because the present invention by noise filter and the internal face of smoke machine main body 2 away from
From a quarter in noise source wavelength away from degree at, the noise of the wavelength can be effectively eliminated.
Curved surface noise filtering device 1 carries out noise reduction using the principle of resonance, 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, specific noise frequency is made an uproar with the curved surface for being set target frequency in space
Sound filter device 1 forms covibration.
When resonance occurs, the sound wave of oscillation can intensely pierce into out through-hole 111 back and forth in air, and the acoustic energy of noise exists
It is converted to friction loss during this, achievees the effect that eliminate target frequency noise.
This can reduce the kitchen ventilator of specific unifrequency noise, be provided with smoke machine main body 2 and can reduce specific frequency noise
Curved surface noise filtering device 1, curved surface noise filtering device 1 are assemblied in smoke machine main body 2.By adjusting the aperture of different through-holes 111
Or the edge of through-hole 111 and the Edge Distance of adjacent through-holes 111 reach the noise reduction of specific frequency noise.The curved surface noise filtering
Device 1 can keep long-term good noise reduction, which, which has, is easy to arrange, dust, the grease on surface
Etc. cleaning can be removed.The curved surface noise filtering device 1 has the advantages that low cost, reliability are high.The curved surface noise filtering fills
The material for setting 1 is anticorrosive, chemical resistance and is hardly damaged.Specific noise frequency, which can be directed to, to be reduced.
Embodiment 2.
A kind of kitchen ventilator that can reduce specific unifrequency noise, as shown in figure 3, other features are same as Example 1, it is different
Place is that the panel 11 of the present embodiment is flat panel 11.Panel 11 be provided with it is multiple, specially two.Two panels 11
It is assembled into continuous limited encirclement structure.
It should be noted that panel 11 of the invention can be arranged there are two or above arbitrary positive integer, and it is multiple
Panel 11 is assembled into the limited encirclement structure of connection or discontinuous limited encirclement structure, specific embodiment with
Depending on actual conditions.
The present embodiment compared with Example 1 the advantages of be that noise source can be positioned over to the center of structure, curved surface is made to make an uproar
Sound filter device 1 fills noise source and surrounds to the greatest extent, to reach maximum drop effect.
Embodiment 3.
A kind of kitchen ventilator that can reduce specific unifrequency noise, as shown in figure 4, other features are same as Example 1, it is different
Place is that curved surface 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 the sound-absorbing part 12 of the present invention also may be used
It is fixed on panel 11 and smoke machine main body 2 most with the surface or sound-absorbing part 12 of being fixed on panel 11 and 2 nearest wall surface of smoke machine main body
Between close wall surface gap, specific embodiment is depending on actual conditions.
The density and material of sound-absorbing part 12 also have important influence, sound wave can directly through the sound-absorbing part 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, can not be made an uproar into curved surface
The through-hole 111 of sound filter device 1.Therefore the present invention sound-absorbing part 12 be preferably fiber, PP cottons, 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, reinforce drop
It makes an uproar effect.
Embodiment 4.
A kind of kitchen ventilator that can reduce specific unifrequency noise, as shown in figure 5, other features are same as Example 1, it is different
Place is that the panel 11 of the present embodiment is specially metal decking 11, it should be noted that the panel 11 of the present invention or modeling
Charge level plate 11 or alloy panel 11, depending on specific embodiment is with actual conditions.
It is 100Hz~8000Hz that curved surface noise filtering device 1 of the present invention, which eliminates noisy frequency range,.
The panel 11 of the present embodiment is connected with reinforced structure 112.Specific reinforced structure 112 is reinforcing rib.
It should be noted that reinforced structure 112 of the invention or convex closure or recessed packet, or a variety of arbitrary groups
It closes, 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 into
Ejected wave and back wave have out of phase under the specific distance with reflecting surface, can cancel out each other to the sound wave of noise, from
And reduce the intensity of noise.The panel 11 of the metal of the present embodiment has the advantages that high temperature resistant, durable.
Embodiment 5.
A kind of kitchen ventilator that can reduce specific unifrequency noise, as shown in fig. 6, other features are same as Example 1, it is different
Place is that the panel 11 of the present embodiment is flat panel 11.Panel 11 be provided with it is multiple, specially two.Two panels 11
It is assembled into discontinuous limited encirclement structure.
It should be noted that panel 11 of the invention can be arranged there are two or above arbitrary positive integer, it is specific real
Mode is applied depending on actual conditions.
The present embodiment compared with Example 2 the advantages of be that it is discontinuous that the curved surface noise filtering device 1, which is applicable in smoke machine host,
Space, such as the wall surface of smoke machine main body 2 are provided with the structures such as the structure of protrusion and form discontinuous space.The face of the present embodiment
The assembly method of plate 11 improves adaptability of the curved surface noise filtering device 1 to smoke machine main body 2.
Embodiment 6.
A kind of design for the kitchen ventilator that can reduce specific unifrequency noise：
Target frequency：8000Hz.
The aperture d=10mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b=23mm of adjacent through-holes 111,
H1=2.5mm, 11 thickness 2mm of panel.
Embodiment 7.
A kind of design for the kitchen ventilator that can reduce specific unifrequency noise：
Target frequency：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, 11 thickness 10mm of panel.
Embodiment 8.
A kind of design for the kitchen ventilator that can reduce specific unifrequency noise：
Target frequency：5000Hz.
The aperture d=10mm of through-hole 111, the edge of through-hole 111 and the edge minimum range b=25mm of adjacent through-holes 111,
H1=2.5mm, 11 thickness 10mm of panel.
Embodiment 9.
A kind of design for the kitchen ventilator that can reduce specific unifrequency noise：
Target frequency：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, 11 thickness 10mm of panel.
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 that can reduce specific unifrequency noise, it is characterised in that：It is provided with smoke machine main body and can reduce specific
The curved surface noise filtering device of frequency noise, curved surface noise filtering device are assemblied in smoke machine main body.
2. the kitchen ventilator according to claim 1 that specific unifrequency noise can be reduced, it is characterised in that：The curved surface noise
Filter device is set as that multiple panels for offset noise through-hole are distributed with；
The panel is curved slab.
3. a kind of kitchen ventilator that can reduce specific unifrequency noise according to claim 2, it is characterised in that：By adjusting
The edge minimum range or curved surface noise filtering device and cigarette of the aperture of different the through-holes either edge of through-hole and adjacent through-holes
The distance of owner's body reaches the noise reduction of specific frequency noise.
4. the kitchen ventilator according to claim 3 that specific unifrequency noise can be reduced, it is characterised in that：The hole of the through-hole
Diameter is defined as d, and d≤30mm.
5. the kitchen ventilator according to claim 4 that specific unifrequency noise can be reduced, it is characterised in that：The side of the through-hole
The edge minimum range of edge and adjacent through-holes is b, and b is the arbitrary value more than 0.
6. the kitchen ventilator according to claim 5 that specific unifrequency noise can be reduced, it is characterised in that：The thickness of the panel
Degree is less than 20mm.
7. the kitchen ventilator according to claim 6 that specific unifrequency noise can be reduced, it is characterised in that：The panel setting
Have multiple；
The multiple panel-mounted is at continuous limited encirclement structure or discontinuous limited encirclement structure.
8. the kitchen ventilator of specific unifrequency noise can be reduced according to claim 6, it is characterised in that：The panel and smoke machine
There are gaps between the immediate wall surface of main body, are H by the distance definition in gap1；
The curved surface 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。
9. the kitchen ventilator of specific unifrequency noise can be reduced according to claim 8, it is characterised in that：The sound-absorbing part is fixed
In the outer surface of panel；Or
The sound-absorbing part is fixed on the surface of panel and 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；
The sound-absorbing part is fiber, PP cottons, polyester fiber, Carbon fibe or porous foam；Or
The sound-absorbing part is porous plate.
10. the kitchen ventilator according to claim 9 that specific unifrequency noise can be reduced, it is characterised in that：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；
It is 100Hz~8000Hz that the curved surface noise filtering device, which eliminates noisy frequency range,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810772814.5A CN108731066A (en) | 2018-07-14 | 2018-07-14 | A kind of kitchen ventilator that can reduce specific unifrequency noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810772814.5A CN108731066A (en) | 2018-07-14 | 2018-07-14 | A kind of kitchen ventilator that can reduce specific unifrequency noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108731066A true CN108731066A (en) | 2018-11-02 |
Family
ID=63926792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810772814.5A Pending CN108731066A (en) | 2018-07-14 | 2018-07-14 | A kind of kitchen ventilator that can reduce specific unifrequency noise |
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| CN208794490U (en) * | 2018-07-14 | 2019-04-26 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator that can reduce specific unifrequency noise |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201730873U (en) * | 2010-07-30 | 2011-02-02 | 广州广船国际股份有限公司 | Structure of ship fan room |
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