CN106050751A - Silencer of range hood - Google Patents
Silencer of range hood Download PDFInfo
- Publication number
- CN106050751A CN106050751A CN201610594264.3A CN201610594264A CN106050751A CN 106050751 A CN106050751 A CN 106050751A CN 201610594264 A CN201610594264 A CN 201610594264A CN 106050751 A CN106050751 A CN 106050751A
- Authority
- CN
- China
- Prior art keywords
- muffler shell
- noise elimination
- range hood
- chamber
- acoustic filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
-
- 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
- F04D29/665—Sound attenuation by means of resonance chambers or interference
-
- 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
Abstract
The invention discloses a silencer of a range hood, which is arranged in an outlet of an exhaust cover of the range hood. The silencer is characterized by being provided with a lampblack airflow inlet in the bottom and a lampblack airflow outlet in the top; the silencer comprises a silencer shell; the silencer shell takes the shape of a hollow column; and a silencing structure for passing through lampblack airflow and absorbing noise is arranged in the silencer shell. As the silencer is arranged in the outlet of the exhaust cover of the range hood, the noise of the lampblack airflow from the exhaust cover is reduced, the better noise reducing effect can be obtained, and the air volume is not influenced.
Description
Technical field
The present invention relates to a kind of range hood, the acoustic filter of a kind of range hood.
Background technology
Range hood has become one of machine for kitchen use equipment indispensable in Modern Family, and usual range hood includes top
Suction and side-suction type, and the range hood of top suction type due to clean and tidy light and handy, take up room the advantage such as little, and has more and more extensive
Application.Top-sucking kitchen ventilator generally includes exhaust fume collecting hood, the blower housing being positioned on exhaust fume collecting hood, is provided with snail in blower housing
Shell, impeller and the motor of driving impeller.
The lampblack absorber of conventional top suction type, a kind of oil suction as disclosed in the Chinese patent of Application No. 201410704669.9
Cigarette machine, including the exhaust fume collecting hood with inlet scoop, is arranged on the wind cabinet on exhaust fume collecting hood top, is arranged on the interior wind with spiral case of wind cabinet
Machine, by the effect of blower fan, forms negative pressure while being discharged by the gas in wind cabinet thus outside oil smoke is sucked cabinet wind cabinet
In, it is achieved the purpose of fume-exhausting.
Increasingly focus on quality of life along with people, the noise problem of range hood the most increasingly comes into one's own.Noise
Size be evaluate range hood quality an important indicator.The noise source of lampblack absorber is made an uproar substantially from the rotation of impeller
Sound and two parts of turbulence noise.The noise reducing range hood at present the most still uses the mode of passive noise reduction, by sky
Centrifugal blower, spiral case are optimized by the mode of aerodynamics, but this smoke evacuation air quantity often leading to range hood reduces, and fall
Effect of making an uproar is the most fairly obvious.
Summary of the invention
The technical problem to be solved is the problem existed for above-mentioned prior art, it is provided that a kind of effectively reduction
The acoustic filter of the range hood of noise.
The present invention solves the technical scheme that above-mentioned technical problem used: the acoustic filter of a kind of range hood, is used for setting
Put the exit of outlet housing at described range hood, it is characterised in that: the bottom of described acoustic filter is formed with cooking fume and flows to
Mouth, top are formed with cooking fume flow export, and described acoustic filter includes that muffler shell, described muffler shell are hollow columnar,
It is provided with in described muffler shell and passes through for cooking fume stream and the noise elimination structure of absorption of noise.
Noise elimination wall that according to an aspect of the present invention, described noise elimination structure includes being arranged in described muffler shell,
And it is arranged on the acoustical cotton between described noise elimination wall and muffler shell, the gap between described muffler shell and noise elimination wall
All closing at top and bottom, described cooking fume flows to the interruption-forming bottom at described muffler shell, and described cooking fume flows out
Interruption-forming is at the top of described noise elimination wall.
Preferably, for reaching more preferable noise reduction, described noise elimination wall offers multiple hole, the perforate of described noise elimination wall
Rate is 5%～50%.
According to another aspect of the present invention, described noise elimination structure includes be arranged in described muffler shell at least two
Individual noise elimination wall, described noise elimination wall is spaced layout diametrically, and described noise elimination wall offers multiple hole, described muffler shell and
Gap between the noise elimination wall of inner side is all closed at top and bottom, between described muffler shell and outermost noise elimination wall
Constitute resonant cavity.
Preferably, for obtaining preferable noise reduction, it is unlikely to again to lose the biggest blast, the punching rate of described resonant cavity
It is 5%～10%.
According to another aspect of the present invention, liquidated by air-flow, reach noise elimination, the effect of oil strain, described oil smoke air-flow
Import is formed at the bottom of described muffler shell, and described cooking fume flow export is formed at the top of described muffler shell, institute
State noise elimination structure include the multiple dividing plates being arranged in described muffler shell, multiple separator tube and extend described oil smoke
The escape pipe of air stream outlet, described dividing plate is spaced layout thus by described muffler shell in the axial direction of described muffler shell
Being separated into multiple cavity the most vertically, each separator tube passes at least one dividing plate, and the plurality of separator tube, escape pipe make institute
State gas communication between multiple cavity.
According to currently preferred, arranging two dividing plates and form three cavitys, described dividing plate includes the first dividing plate and
Two dividing plates, the plurality of cavity the first chamber bottom described muffler shell and between the first dividing plate, are positioned at described first
The second chamber between dividing plate and second partition and be positioned at the 3rd chamber at described second partition and muffler shell top, described
Separator tube includes that air inlet separator tube and intermediate buffering pipe, described air inlet separator tube are located in described first chamber, the second chamber and the 3rd
Intracavity, described intermediate buffering pipe is located in described second chamber and the 3rd intracavity, and described escape pipe is located in described second chamber and
Three intracavity.
Further, for obtain preferable noise reduction, described separator tube offers sound attenuation hole, percent opening be 1%～
10%.
Further, for strengthening noise reduction, being also provided with sound-absorbing structure in exit, described oil smoke air flow outlet is arranged
Have outlet partition plate, described outlet partition plate offer through hole, described outlet partition plate be provided above acoustical cotton.
Compared with prior art, it is an advantage of the current invention that: disappear by arranging in the exit of the outlet housing of range hood
Sound device, reduces the noise of the oil smoke air-flow gone out from outlet housing, can obtain preferable noise reduction, the most not affect air quantity.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the range hood of the acoustic filter application of the present invention；
Fig. 2 is the decomposition texture schematic diagram of first embodiment of the acoustic filter of the present invention；
Fig. 3 is the schematic diagram of second embodiment of the acoustic filter of the present invention；
Fig. 4 is the sectional view of second embodiment of the acoustic filter of the present invention；
Fig. 5 is the schematic diagram of the 3rd embodiment of the acoustic filter of the present invention；
Fig. 6 is the sectional view of the 3rd embodiment of the acoustic filter of the present invention；
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Embodiment one
See Fig. 1, a kind of range hood, including exhaust fume collecting hood 1, be arranged on the casing 2 above exhaust fume collecting hood 1, arrange in casing 2
There is blower fan 3.Offering air inlet on exhaust fume collecting hood 1, thus, oil smoke can be aspirated through air inlet 11 and enter by the blower fan 3 in casing 2
It is discharged into common flue after casing 2.
The top of casing 2 is provided with outlet housing 21, and the oil smoke in making casing 2 can be discharged into outside casing 2.Outlet housing
The exit of 21 is provided with acoustic filter 4, for solving the problem that outlet noise is big.
Seeing Fig. 2, acoustic filter 4 includes muffler shell 41, the noise elimination wall 42 that is arranged in muffler shell 41, arrange
Acoustical cotton 43 between noise elimination wall 42 and muffler shell 41 and be arranged on the upper cover 44 at muffler shell 41 top.Disappear
Sound device shell 41 is in hollow columnar, and noise elimination wall 42 is ring-type, as circular or irregularly shaped, such as petal-shaped, it is offered
Having multiple hole 421, percent opening is preferably 5%～50%, a diameter of 1mm～6mm in hole 421.The bottom shape of muffler shell 41
Become to have oil smoke airflow inlet 411, the top of noise elimination wall 42 to be formed with cooking fume flow export 412.Oil smoke air-flow flows to from cooking fume
After mouth 411 enters, passing through in the annulus that noise elimination wall 42 is formed, sound wave enters into noise elimination wall 42 by hole 421 and eliminates the noise
Between device shell 41, and by acoustical cotton 43 absorption of noise, oil smoke air-flow then flows out from cooking fume flow export 412.Acoustical cotton 43
Can be monolayer, it is also possible to for including multilamellar, i.e. include the material being respectively directed to the noise of high frequency, intermediate frequency and low frequency.Upper cover 44
Closing the top in gap between muffler shell 41 and noise elimination wall 42, the bottom of muffler shell 41 then extends radially inwardly to
Noise elimination wall 42, to close the bottom in gap between muffler shell 41 and noise elimination wall 42.
Embodiment two
Seeing Fig. 3 and Fig. 4, in the present embodiment, the difference with above-described embodiment one is, uses double-layer cavity micropore generation
Scheme for above-mentioned micropore+acoustical cotton.Acoustic filter 4 ' includes muffler shell 41, noise elimination wall and upper cover 44, and noise elimination wall includes
The first noise elimination wall 42 ' of being arranged in muffler shell 41 ' and be arranged on muffler shell 41 and the first noise elimination wall 42 ' it
Between the second noise elimination wall 43 ', in Fig. 3 hide upper cover 44.
Wherein, the first noise elimination wall 42 ' and the second noise elimination wall 43 ' are the most in the form of a ring as circular or irregularly shaped, such as flower
Flap.Upper cover 44 closes the top in gap between muffler shell 41 and the first noise elimination wall 42 ', and the bottom of muffler shell 41
Then extend radially inwardly to the first noise elimination wall 42 ', to close the end in gap between muffler shell 41 and the first noise elimination wall 42 '
Portion.Offer multiple first hole 421 ' on first noise elimination wall 42 ', the second noise elimination wall 43 ' offers multiple second hole 431 '.The
Distance between one noise elimination wall 42 ' and the second noise elimination wall 43 ' is Δ 1,15mm≤Δ 1≤60mm, the second noise elimination wall 43 ' and noise elimination
Distance between device shell 41 is Δ 2,15mm≤Δ 2≤60mm.
The closing space being made up of muffler shell 41, upper cover 44 and the second noise elimination wall 43 ' forms resonant cavity 45, above-mentioned
The first hole 421 ' and the second hole 431 ' concentrate on the position in the middle part of corresponding resonant cavity 45, thus oil smoke air-flow is from the first noise elimination wall
42 ' and second noise elimination wall 43 ' by consumed energy in rear entrance resonant cavity 45, thus realize the purpose of noise reduction.Resonant cavity 45
Height be H, it is preferred that 30mm≤H≤300mm.The punching rate of resonant cavity 45 is preferably 5%～10%, so that disappear
Sound effective value will not lose the most again the biggest pressure, reduces air quantity.
Embodiment three
See Fig. 5 and Fig. 6, in the present embodiment, acoustic filter 4 " include the muffler shell 41 of hollow, edge in acoustic filter 41
Axially spaced-apart is disposed with the first dividing plate 42 " and second partition 43 ", the first dividing plate 42 " and second partition 43 " extend diametrically,
Thus the space in muffler shell 41 is separated into the cooking fume that the oil smoke airflow inlet 411 offered by bottom is offered to top
Chamber, three, flow export 412 direction (being seen as on Fig. 6 from left to right, be from the bottom to top during installation), is i.e. positioned at muffler shell 41 end
Portion and the first dividing plate 42 " between the first chamber 44 ", the first dividing plate 42 " and second partition 43 " between the second chamber 45 ", Yi Ji
Two dividing plates 43 " and the 3rd chamber 46 at muffler shell 41 top ".Outlet partition plate 413 it is provided with at cooking fume flow export 412.Go out
Offering through hole on mouthful dividing plate 413, the shape of through hole can be that circle, square, regular hexagon etc. are variously-shaped.Outlet partition plate
413 be provided above acoustical cotton 414, it is preferred that the thickness of acoustical cotton 414 is 5mm～80mm.
Be provided with air inlet separator tube 47 in muffler shell 41 ", intermediate buffering pipe 48 " and escape pipe 49 ", above three
Pipe axially and muffler shell 41 axially in parallel, and at least across one of them dividing plate.In the present embodiment, air inlet buffering
Pipe 47 " and intermediate buffering pipe 48 " lay respectively at escape pipe 49 " both sides, and air inlet separator tube 47 " than intermediate buffering pipe 48 " more
Near the bottom (i.e. closer to oil smoke airflow inlet 411) of muffler shell 41, air inlet separator tube 47 " through the first dividing plate 42 "
With second partition 43 ", be positioned at the first chamber 44 ", the second chamber 45 " and the 3rd chamber 46 "；And intermediate buffering pipe 48 " ratio air inlet separator tube
47 " closer to the top (i.e. closer to cooking fume flow export 412) of muffler shell 41, intermediate buffering pipe 48 " through second every
Plate 43 ", intermediate buffering pipe 48 " it is positioned at the second chamber 45 " and the 3rd chamber 46 "；Escape pipe 49 " through second partition 43 " and acoustic filter
Shell 41 top, is positioned at the second chamber 45 " and the 3rd chamber 46 ".
Air inlet separator tube 47 " and intermediate buffering pipe 48 " on be evenly distributed with the sound attenuation hole 471 of diameter 1～10mm ", 481 ",
Percent opening is preferably 1%～10%.
Oil smoke air-flow is from acoustic filter 4 " bottom enter after, due to the first dividing plate 42 " iris action, only from air inlet buffer
Pipe 47 " pass through after enter into the 3rd chamber 46 ", back into intermediate buffering pipe 48 after bumping against outlet partition plate 413 ", and again bump against
Escape pipe 49 is backed into after outlet partition plate 413 " and discharge, being achieved in air-flow liquidates, and reaches noise elimination, the effect of oil strain, Fig. 6
Middle arrow represents air-flow direction of advance.
Claims (9)
1. an acoustic filter for range hood, for being arranged on the exit of the outlet housing (21) of described range hood, its feature
It is: the bottom of described acoustic filter is formed with oil smoke airflow inlet (411), top is formed with cooking fume flow export (412), described
Acoustic filter includes muffler shell (41), and described muffler shell (41) is in hollow columnar, and described muffler shell sets in (41)
It is equipped with and passes through for cooking fume stream and the noise elimination structure of absorption of noise.
2. the acoustic filter of range hood as claimed in claim 1, it is characterised in that: described noise elimination structure includes being arranged on described
Noise elimination wall (42) in muffler shell (41) and be arranged on the suction between described noise elimination wall (42) and muffler shell (41)
Sound is cotton (43), and the gap between described muffler shell (41) and noise elimination wall (42) is all closed at top and bottom, described oil smoke
Airflow inlet (411) is formed at the bottom of described muffler shell (41), described cooking fume flow export (412) be formed at described in disappear
The top of sound wall (42).
3. the acoustic filter of range hood as claimed in claim 2, it is characterised in that: offer multiple on described noise elimination wall (42)
Hole (421), the percent opening of described noise elimination wall (42) is 5%～50%.
4. the acoustic filter of range hood as claimed in claim 1, it is characterised in that: described noise elimination structure includes being arranged on described
At least two noise elimination wall in muffler shell (41), described noise elimination wall is spaced layout diametrically, described noise elimination wall is offered
Having multiple hole, the gap between the noise elimination wall of described muffler shell (41) and inner side is all closed at top and bottom, described
Resonant cavity (45) is constituted between muffler shell (41) and outermost noise elimination wall.
5. the acoustic filter of range hood as claimed in claim 4, it is characterised in that: the punching rate of described resonant cavity (45) is
5%～10%.
6. the acoustic filter of range hood as claimed in claim 1, it is characterised in that: described oil smoke airflow inlet (411) is formed
In the bottom of described muffler shell (41), described cooking fume flow export (412) is formed at the top of described muffler shell (41)
Portion, described noise elimination structure includes the multiple dividing plates, the multiple separator tube that are arranged in described muffler shell (41) and extends
The escape pipe of described cooking fume flow export (412) (49 "), described dividing plate is spaced cloth in the axial direction of described muffler shell (41)
Putting thus be separated into multiple cavity vertically by described muffler shell (41), each separator tube passes at least one dividing plate,
The plurality of separator tube, escape pipe (49 ") make gas communication between the plurality of cavity.
7. the acoustic filter of range hood as claimed in claim 6, it is characterised in that: described dividing plate includes the first dividing plate (42 ")
With second partition (43 "), the plurality of cavity be positioned between described muffler shell (41) bottom and the first dividing plate (42 ") the
One chamber (44 "), the second chamber being positioned between described first dividing plate (42 ") and second partition (43 ") (45 ") and be positioned at described
3rd chamber at second partition (43 ") and muffler shell (41) top (46 "), described separator tube includes air inlet separator tube (47 ")
With intermediate buffering pipe (48 "), described air inlet separator tube (47 ") is located in described first chamber (44 "), the second chamber (45 ") and the 3rd
In chamber (46 "), it is interior that described intermediate buffering pipe (48 ") is located in described second chamber (45 ") and the 3rd chamber (46 "), described escape pipe
(49 ") are located in described second chamber (45 ") and the 3rd chamber (46 ").
8. the acoustic filter of range hood as claimed in claim 6, it is characterised in that: offer sound attenuation hole on described separator tube,
Percent opening is 1%～10%.
9. the acoustic filter of range hood as claimed in claim 6, it is characterised in that: described cooking fume flow export (412) place sets
It is equipped with outlet partition plate (413), described outlet partition plate (413) offers through hole, being provided above of described outlet partition plate (413)
Acoustical cotton (414).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594264.3A CN106050751A (en) | 2016-07-22 | 2016-07-22 | Silencer of range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594264.3A CN106050751A (en) | 2016-07-22 | 2016-07-22 | Silencer of range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106050751A true CN106050751A (en) | 2016-10-26 |
Family
ID=57417750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610594264.3A Pending CN106050751A (en) | 2016-07-22 | 2016-07-22 | Silencer of range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106050751A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402004A (en) * | 2016-12-08 | 2017-02-15 | 张敬进 | Damping noise reduction fan |
| CN107345679A (en) * | 2017-07-28 | 2017-11-14 | 青岛海尔智能技术研发有限公司 | A kind of denoising device and the range hood with the denoising device |
| CN108240647A (en) * | 2017-10-31 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of frequency conversion noise reduction outlet housing of range hood |
| CN108240652A (en) * | 2017-10-31 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of frequency conversion noise reduction outlet housing of range hood |
| CN108240649A (en) * | 2017-10-31 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of frequency conversion noise reduction outlet housing of range hood |
| CN108240650A (en) * | 2017-10-31 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of frequency conversion noise reduction outlet housing of range hood |
| CN108731058A (en) * | 2018-05-31 | 2018-11-02 | 广东美的厨房电器制造有限公司 | Range hood |
| CN110206761A (en) * | 2018-10-19 | 2019-09-06 | 华帝股份有限公司 | Composite broadband silencer for range hood and range hood |
| CN111536564A (en) * | 2020-05-12 | 2020-08-14 | 宁波方太厨具有限公司 | Fume exhaust fan |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5983888A (en) * | 1999-04-07 | 1999-11-16 | Whirlpool Corporation | Low noise cooker hood |
| CN203050848U (en) * | 2012-11-28 | 2013-07-10 | 重庆长安汽车股份有限公司 | Vehicle muffler |
| CN203163019U (en) * | 2013-01-16 | 2013-08-28 | 浙江苏泊尔家电制造有限公司 | Range hood air outlet seat with noise-reducing function |
| CN203687138U (en) * | 2013-12-31 | 2014-07-02 | 广东万和电气有限公司 | Range hood with noise-abatement device |
| CN205895706U (en) * | 2016-07-22 | 2017-01-18 | 宁波方太厨具有限公司 | Range hood's silencer |
-
2016
- 2016-07-22 CN CN201610594264.3A patent/CN106050751A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5983888A (en) * | 1999-04-07 | 1999-11-16 | Whirlpool Corporation | Low noise cooker hood |
| CN203050848U (en) * | 2012-11-28 | 2013-07-10 | 重庆长安汽车股份有限公司 | Vehicle muffler |
| CN203163019U (en) * | 2013-01-16 | 2013-08-28 | 浙江苏泊尔家电制造有限公司 | Range hood air outlet seat with noise-reducing function |
| CN203687138U (en) * | 2013-12-31 | 2014-07-02 | 广东万和电气有限公司 | Range hood with noise-abatement device |
| CN205895706U (en) * | 2016-07-22 | 2017-01-18 | 宁波方太厨具有限公司 | Range hood's silencer |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402004A (en) * | 2016-12-08 | 2017-02-15 | 张敬进 | Damping noise reduction fan |
| CN107345679A (en) * | 2017-07-28 | 2017-11-14 | 青岛海尔智能技术研发有限公司 | A kind of denoising device and the range hood with the denoising device |
| CN108240647B (en) * | 2017-10-31 | 2023-11-17 | 宁波方太厨具有限公司 | Variable-frequency noise-reduction air outlet cover of range hood |
| CN108240652A (en) * | 2017-10-31 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of frequency conversion noise reduction outlet housing of range hood |
| CN108240649A (en) * | 2017-10-31 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of frequency conversion noise reduction outlet housing of range hood |
| CN108240650A (en) * | 2017-10-31 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of frequency conversion noise reduction outlet housing of range hood |
| CN108240647A (en) * | 2017-10-31 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of frequency conversion noise reduction outlet housing of range hood |
| CN108240649B (en) * | 2017-10-31 | 2024-01-16 | 宁波方太厨具有限公司 | Variable-frequency noise-reduction air outlet cover of range hood |
| CN108240650B (en) * | 2017-10-31 | 2024-01-16 | 宁波方太厨具有限公司 | Variable-frequency noise-reduction air outlet cover of range hood |
| CN108240652B (en) * | 2017-10-31 | 2024-01-16 | 宁波方太厨具有限公司 | Variable-frequency noise-reduction air outlet cover of range hood |
| CN108731058A (en) * | 2018-05-31 | 2018-11-02 | 广东美的厨房电器制造有限公司 | Range hood |
| CN110206761A (en) * | 2018-10-19 | 2019-09-06 | 华帝股份有限公司 | Composite broadband silencer for range hood and range hood |
| CN111536564A (en) * | 2020-05-12 | 2020-08-14 | 宁波方太厨具有限公司 | Fume exhaust fan |
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Application publication date: 20161026 |
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