CN108731078A - A kind of kitchen ventilator with noise filtering function bellows - Google Patents
A kind of kitchen ventilator with noise filtering function bellows Download PDFInfo
- Publication number
- CN108731078A CN108731078A CN201810772896.3A CN201810772896A CN108731078A CN 108731078 A CN108731078 A CN 108731078A CN 201810772896 A CN201810772896 A CN 201810772896A CN 108731078 A CN108731078 A CN 108731078A
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- bellows
- noise
- main body
- kitchen ventilator
- hole
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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
-
- 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
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ventilation (AREA)
Abstract
A kind of kitchen ventilator with noise filtering function bellows is provided with smoke machine main body and can eliminate the bellows of noise, and bellows are assemblied in smoke machine body interior.Bellows are provided with multiple through-holes for eliminating specific unifrequency noise or multi-frequency noise.Bellows are provided with box main body and protrusion, and protrusion is integrally connected to box main body and is located at the corresponding position of through-hole.By adjusting the edge of the apertures of different through-holes, through-hole, either bellows reach specific unifrequency noise or multi-frequency noise noise reduction to a kind of kitchen ventilator with water conservancy diversion noise filtering device of the present invention with the combination at a distance from smoke machine main body with the edge minimum range of adjacent through-holes.The bellows can keep long-term good noise reduction, have and be easy to arrange, dust, the grease on surface etc. can remove cleaning.The bellows have the advantages that low cost, reliability are high.The advantages of bellows are anticorrosive, chemical resistance and are hardly damaged, while can effectively reduce narrow frequency noise and broadband noise.
Description
Technical field
The present invention relates to kitchen ventilator field, more particularly to a kind of kitchen ventilator with noise filtering function bellows.
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.Again since the noisy frequency range that kitchen ventilator generates can be 100Hz~8000Hz, it is clear that single-frequency
The passive denoising device of section can not be directed to kitchen ventilator and generate good noise reduction.
Therefore, in view of the shortcomings of the prior art, a kind of kitchen ventilator with noise filtering function bellows of offer is to solve existing skill
Art deficiency is very necessary.
Invention content
It provides it is an object of the invention to avoid in place of the deficiencies in the prior art a kind of with noise filtering function bellows
Kitchen ventilator.The kitchen ventilator with noise filtering function bellows can reduce specific unifrequency noise or multi-frequency noise noise reduction.
The above-mentioned purpose of the present invention is realized by following technical measures：
A kind of kitchen ventilator with noise filtering function bellows is provided, smoke machine main body is provided with and the wind of noise can be eliminated
Case, bellows are assemblied in smoke machine body interior.
The bellows are provided with multiple through-holes for eliminating specific unifrequency noise or multi-frequency noise.
The bellows are provided with box main body and protrusion, and protrusion is integrally connected to box main body and is located at the corresponding position of through-hole
It sets.
The protrusion is provided with autonomous channel, and autonomous channel is through to through-hole from protrusion.
Preferably, above-mentioned protrusion be integrally connected to box main body toward smoke machine main body one side.
Preferably, above-mentioned box main body is formed by multiple panel splicings, and the through-hole is distributed in panel.
The present invention by adjusting the aperture of different through-holes, the edge of through-hole and adjacent through-holes edge minimum range or wind
Combination of the case at a distance from smoke machine main body reaches specific unifrequency noise or 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 is single numerical value or multiple numerical value.
Preferably, above-mentioned b is single numerical value or multiple numerical value.
Preferably, there are gaps between above-mentioned panel and smoke machine main body, are H by the distance definition in gap1。
Preferably, above-mentioned bellows are 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 gap.
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, the thickness of above-mentioned panel is less than 20mm.
Preferably, it is 100Hz~8000Hz that above-mentioned bellows, which eliminate noisy frequency range,.
A kind of kitchen ventilator with noise filtering function bellows of the present invention is provided with smoke machine main body and can eliminate noise
Bellows, bellows are assemblied in smoke machine body interior.Bellows are provided with multiple for eliminating specific unifrequency noise or multi-frequency is made an uproar
The through-hole of sound.Bellows are provided with box main body and protrusion, and protrusion is integrally connected to box main body and is located at the corresponding position of through-hole.
Protrusion is provided with autonomous channel, and autonomous channel is through to through-hole from protrusion.Denoising device in the prior art can only be directed to
Single target frequency noise reduction.The present invention a kind of kitchen ventilator with water conservancy diversion noise filtering device by adjusting different through-holes hole
Diameter, the edge of through-hole and the edge minimum range or bellows of adjacent through-holes reach specific list with the combination at a distance from smoke machine main body
Frequency noise or multi-frequency noise noise reduction.The bellows can keep long-term good noise reduction, have and be easy to arrange, surface
Dust, grease etc. can remove cleaning.The bellows have the advantages that low cost, reliability are high.The bellows are anticorrosive, anti-chemistry
Property and the advantages of be hardly damaged, while can effectively reduce narrow frequency noise and broadband noise.
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 dimensional structure diagram of bellows.
Fig. 2 is right view in Fig. 1.
Fig. 3 is upward view in Fig. 1.
Fig. 4 is through-hole diameter schematic diagram of the panel far from smoke machine body side.
Fig. 5 is a kind of kitchen ventilator upward view with noise filtering function bellows of embodiment 2.
Fig. 6 is the panel construction schematic diagram of embodiment 3.
In Fig. 1 to Fig. 6, include：
Bellows 1,
Box main body 11, panel 111,
Protrusion 12, through-hole 121,
Reinforced structure 13,
Sound-absorbing part 14,
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 kitchen ventilator with noise filtering function bellows is provided with smoke machine main body 2 and can eliminate as shown in Figs 1-4
The bellows 1 of noise, bellows 1 are assemblied in inside smoke machine main body 2.Bellows 1 be provided with it is multiple for eliminate specific unifrequency noise or
The through-hole 121 of person's multi-frequency noise.Bellows 1 are provided with box main body 11 and protrusion 12, and protrusion 12 is integrally connected to box main body
11 and it is located at 121 corresponding position of through-hole, protrusion 12 is provided with autonomous channel, and autonomous channel is through to through-hole from protrusion 12
121。
Experiments verify that the through-hole 121 of the present invention corresponds to the autonomous channel of protrusion 12, autonomous channel is that semi-open-type is empty
Between, bellows 1 different incidence angles noise acoustic wave form at resonant frequency be the same, in other words the target frequency of bellows 1 is
Constant.Simultaneously again because it is low resistance structure that the setting of protrusion 12, which increases the whole rigidity of bellows 1,.
Protrusion 12 is integrally connected to box main body 11 toward the one side of smoke machine main body 2.Box main body 11 is by multiple panels
111 are spliced, and through-hole 121 is distributed in panel 111.
The present invention is minimum by adjusting the aperture of different through-holes 121, the edge of through-hole 121 and the edge of adjacent through-holes 121
Either combination of the bellows 1 at a distance from smoke machine main body 2 reaches specific unifrequency noise or multi-frequency noise noise reduction to distance.
Panel 111 is set as multiple, and multiple panels 111 are spliced continuous limited encirclement bellows 1.The panel of the present embodiment
111 it is specific have 5,5 panels 111 are spliced the polyhedron of bottom surface opening.
It should be noted that 111 number of panel of the present invention can be 5, or 2 or above arbitrary number
Mesh, a continuous limited encirclement bellows 1 as long as panel 111 may only be spliced, specific performance is according to reality
Depending on situation.
The aperture of the through-hole 121 of the present embodiment is defined as d, and d≤30mm；The more a numerical value of wherein d.The through-hole of the present embodiment
121 edge is b with the edge minimum range of adjacent through-holes 121, and b is the arbitrary value more than 0, and wherein b is multiple numerical value.
In aperture, d is constant, and the value of the edge of through-hole 121 and the edge minimum range b of adjacent through-holes 121 are smaller to disappear
The target noise frequency removed is bigger.It is constant at the edge of through-hole 121 and the edge minimum range b of adjacent through-holes 121,
The smaller target noise frequency to be eliminated of the value of aperture d is with regard to smaller.
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.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
The number of value and the value of d, size are depending on actual conditions.
There are gaps between panel 111 and smoke machine main body 2, are H by the distance definition in gap1。
The denoising device principle of the present invention is such：Limited closed space in bellows 1, travels in noise source
When bellows 1, noise reduction is carried out.Sound wave is usually propagated with negative direction touching bellows 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.Cause
The present invention i.e. H at a distance from smoke machine main body 2 by bellows 11, noise source wavelength a quarter away from degree at, can be effective
Eliminate the noise of the wavelength.
Bellows 1 are to carry out noise reduction using the principle of resonance, specific noise frequency and are already provided with target frequency in space
Bellows 1, formed covibration.
When resonance occurs, the sound wave of oscillation can intensely pierce into out through-hole 121 and autonomous channel back and forth in air, make an uproar
The acoustic energy of sound is converted to friction loss in the process, achievees the effect that eliminate target frequency noise.
A kind of aperture of kitchen ventilator with water conservancy diversion noise filtering device by adjusting different through-holes 121 of the present invention, through-hole
121 edge and the edge minimum range or bellows 1 of adjacent through-holes 121 reach specific with the combination at a distance from smoke machine main body 2
Unifrequency noise or multi-frequency noise noise reduction.The bellows 1 can keep long-term good noise reduction, have and be easy to arrange, table
Dust, the grease in face etc. can remove cleaning.The bellows 1 have the advantages that low cost, reliability are high.The bellows 1 be it is anticorrosive,
Chemical resistance and the advantages of being hardly damaged, while can effectively reduce narrow frequency noise and broadband noise.
Embodiment 2.
A kind of kitchen ventilator with noise filtering function bellows, as shown in figure 5, other characteristics are same as Example 1, difference
Be in：Bellows 1 are additionally provided with sound-absorbing part 14, and sound-absorbing part assembles smoke machine main body 2.The thickness of sound-absorbing part 14 is defined as H2, and H2≤
0.6H1。
The sound-absorbing part 14 of the present embodiment is fixed on gap.
The density and material of sound-absorbing part 14 also have important influence, sound wave can directly through the acoustical cotton 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 enter bellows 1
Hole.
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 14 compared with embodiment 1, and the setting of sound-absorbing part 14 can increase the consume of friction, enhancing drop
It makes an uproar effect.
Embodiment 3.
A kind of kitchen ventilator with noise filtering function bellows, as shown in fig. 6, other features are same as Example 1, difference
It is in the panel 111 of the present embodiment is specially metal decking 111.Bellows 1 eliminate noisy frequency range be 100Hz~
8000Hz。
It should be noted that the panel 111 or plastic front board 111 or alloy panel 111 of the present invention, specific real
Depending on mode is applied with actual conditions.
The thickness of the panel 111 of the present invention is less than 20mm, because of the blocked up weight that can increase bellows 1.
The panel 111 of the present embodiment is connected with reinforced structure 13.Specific reinforced structure 13 is reinforcing rib.
It should be noted that the one of which of reinforced structure 13 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, the more rigid of panel 111 is low resistance structure to the present embodiment.Low resistance structure can make
Incidence wave and back wave have out of phase under the specific distance with reflecting surface, can cancel out each other to the sound wave of noise,
To reduce the intensity of noise.The panel 111 of the metal of the present embodiment has the advantages that high temperature resistant, durable.
Embodiment 4.
A kind of design of the kitchen ventilator with noise filtering function bellows：
Target frequency：8000Hz.
The aperture d=10mm of through-hole 121, the edge of through-hole 121 and the edge minimum range b=23mm of adjacent through-holes 121,
H1=2.5mm.
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 5.
A kind of design of the kitchen ventilator with noise filtering function bellows：
Target frequency：100Hz.
The aperture d=2mm of through-hole 121, the edge of through-hole 121 and the edge minimum range b=23mm of adjacent through-holes 121,
H1=50mm.
It should be noted that the present embodiment only lists the design parameter for the single goal frequency that frequency is 100Hz, not table generation
The present invention can only be directed to the noise of this frequency, only corresponding different parameter, and the present invention can eliminate specifically unifrequent make an uproar
Sound.
Embodiment 6.
A kind of design of the kitchen ventilator with noise filtering function bellows：
Target frequency 1：800Hz.
The aperture d=4mm of through-hole 121, the edge of through-hole 121 and the edge minimum range b=18mm of adjacent through-holes 121,
H1=20mm.
Target frequency 2：800Hz.
The aperture d=5mm of through-hole 121, the edge of through-hole 121 and the edge minimum range b=23mm of adjacent through-holes 121,
H1=20mm.
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 7.
A kind of design of the kitchen ventilator with noise filtering function bellows：
Target frequency 1：7000Hz.
The aperture d=10mm of through-hole 121, the edge of through-hole 121 and the edge minimum range b=23mm of adjacent through-holes 121,
H1=2.6mm.
Target frequency 2：800Hz.
The aperture d=5mm of through-hole 121, the edge of through-hole 121 and the edge minimum range b=23mm of adjacent through-holes 121,
H1=20mm.
Therefore the kitchen ventilator can only effectively eliminate pair in the characteristic with the corresponding through-hole of above-mentioned two target frequency 121
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 bellows, it is characterised in that：It is provided with smoke machine main body and noise can be eliminated
Bellows, bellows are assemblied in smoke machine body interior；
The bellows are provided with multiple through-holes for eliminating specific unifrequency noise or multi-frequency noise；
The bellows are provided with box main body and protrusion, and protrusion is integrally connected to box main body and is located at the corresponding position of through-hole；
The protrusion is provided with autonomous channel, and autonomous channel is through to through-hole from protrusion.
2. the kitchen ventilator according to claim 1 with noise filtering function bellows, it is characterised in that：The protrusion one
Be connected to box main body toward smoke machine main body one side；
The box main body is formed by multiple panel splicings, and the through-hole is distributed in panel.
3. the kitchen ventilator according to claim 2 with noise filtering function bellows, it is characterised in that：It is logical by adjusting difference
The aperture in hole, the edge of through-hole and the edge minimum range or bellows of adjacent through-holes reach with the combination at a distance from smoke machine main body
Specific unifrequency noise or multi-frequency noise noise reduction.
4. the kitchen ventilator of noise filtering function bellows according to claim 3, it is characterised in that：The aperture of the through-hole is fixed
Justice is d, and d≤30mm.
5. the kitchen ventilator according to claim 4 with noise filtering function bellows, it is characterised in that：The edge of the through-hole
Minimum range between the edge of adjacent through-holes is b, and b is the arbitrary value more than 0.
6. the kitchen ventilator according to claim 5 with noise filtering function bellows, it is characterised in that：The d is single number
Value or multiple numerical value；
The b is single numerical value or multiple numerical value.
7. the kitchen ventilator according to claim 6 with noise filtering function bellows, it is characterised in that：The panel and smoke machine
There are gaps between main body, are H by the distance definition in gap1；
The bellows are additionally provided with sound-absorbing part, and sound-absorbing part assembles smoke machine main body；
The thickness of the sound-absorbing part is defined as H2, and H2≤0.6H1。
8. the kitchen ventilator according to claim 7 with noise filtering function bellows, it is characterised in that：The sound-absorbing part is fixed
In gap；
The sound-absorbing part is fiber, PP cottons, polyester fiber, Carbon fibe or porous foam；Or
The sound-absorbing part is porous plate.
9. the kitchen ventilator according to claim 8 with noise filtering function bellows, it is characterised in that：The panel is metal
Panel, plastic front board or alloy panel；
The panel is connected with reinforced structure；
The reinforced structure is convex closure, recessed packet or reinforcing rib.
10. the kitchen ventilator according to claim 9 with noise filtering function bellows, it is characterised in that：The thickness of the panel
Degree is less than 20mm；
It is 100Hz~8000Hz that the bellows, which eliminate noisy frequency range,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810772896.3A CN108731078B (en) | 2018-07-14 | 2018-07-14 | Range hood with noise filtering function bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810772896.3A CN108731078B (en) | 2018-07-14 | 2018-07-14 | Range hood with noise filtering function bellows |
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| CN108731078A true CN108731078A (en) | 2018-11-02 |
| CN108731078B CN108731078B (en) | 2020-05-12 |
Family
ID=63926816
Family Applications (1)
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| CN201810772896.3A Active CN108731078B (en) | 2018-07-14 | 2018-07-14 | Range hood with noise filtering function bellows |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373402A (en) * | 2018-11-27 | 2019-02-22 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator exhaust nozzle pipe of the embedded noise interference device of band |
| CN109373396A (en) * | 2018-11-27 | 2019-02-22 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator with noise interference device |
| CN109373398A (en) * | 2018-11-27 | 2019-02-22 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator exhaust nozzle pipe with noise interference device |
| CN109373397A (en) * | 2018-11-27 | 2019-02-22 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator exhaust nozzle pipe of band self-regulation noise interference device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2660649Y (en) * | 2003-09-12 | 2004-12-01 | 胡永康 | Felt |
| CN201486074U (en) * | 2009-09-24 | 2010-05-26 | 都江堰市三美科技有限公司 | Acoustic board |
| CN106439959A (en) * | 2016-08-31 | 2017-02-22 | 杭州老板电器股份有限公司 | Low noise and large suction range hood |
| CN107388317A (en) * | 2017-08-23 | 2017-11-24 | 华帝股份有限公司 | A kind of denoising structure of range hood |
| CN206816341U (en) * | 2017-04-28 | 2017-12-29 | 重庆长安汽车股份有限公司 | A kind of noise elimination heat shield |
-
2018
- 2018-07-14 CN CN201810772896.3A patent/CN108731078B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2660649Y (en) * | 2003-09-12 | 2004-12-01 | 胡永康 | Felt |
| CN201486074U (en) * | 2009-09-24 | 2010-05-26 | 都江堰市三美科技有限公司 | Acoustic board |
| CN106439959A (en) * | 2016-08-31 | 2017-02-22 | 杭州老板电器股份有限公司 | Low noise and large suction range hood |
| CN206816341U (en) * | 2017-04-28 | 2017-12-29 | 重庆长安汽车股份有限公司 | A kind of noise elimination heat shield |
| CN107388317A (en) * | 2017-08-23 | 2017-11-24 | 华帝股份有限公司 | A kind of denoising structure of range hood |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373402A (en) * | 2018-11-27 | 2019-02-22 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator exhaust nozzle pipe of the embedded noise interference device of band |
| CN109373396A (en) * | 2018-11-27 | 2019-02-22 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator with noise interference device |
| CN109373398A (en) * | 2018-11-27 | 2019-02-22 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator exhaust nozzle pipe with noise interference device |
| CN109373397A (en) * | 2018-11-27 | 2019-02-22 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator exhaust nozzle pipe of band self-regulation noise interference device |
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|---|---|
| CN108731078B (en) | 2020-05-12 |
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