CN205895706U - Range hood's silencer - Google Patents
Range hood's silencer Download PDFInfo
- Publication number
- CN205895706U CN205895706U CN201620782951.3U CN201620782951U CN205895706U CN 205895706 U CN205895706 U CN 205895706U CN 201620782951 U CN201620782951 U CN 201620782951U CN 205895706 U CN205895706 U CN 205895706U
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- Prior art keywords
- muffler shell
- noise elimination
- range hood
- chamber
- acoustic filter
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Abstract
The utility model discloses a range hood's silencer is used for setting up the exit of range hood's play fan housing, its characterized in that: the bottom of silencer is formed with the cooking fume air current import, the top is formed with the cooking fume air current export, the silencer includes the muffler shell, the muffler shell is the cavity column, be provided with in the muffler shell supply cooking fume air current through and absorb the sound -attenuating structure of noise. Exit through the play fan housing at range hood sets up the silencer, reduces the cooking fume air current's that goes out from going out the fan housing noise, can obtain better the noise reduction effect, does not influence the amount of wind again.
Description
Technical field
This utility model is related to a kind of range hood, especially a kind of acoustic filter of range hood.
Background technology
Range hood has become one of indispensable machine for kitchen use equipment in Modern Family, and usual range hood includes pushing up
Suction and side-suction type, and the range hood of top suction type due to neatly light and handy, take up room little the advantages of, and have more and more extensive
Application.Top-sucking kitchen ventilator generally includes exhaust fume collecting hood, the blower housing being located on exhaust fume collecting hood, is provided with snail in blower housing
Shell, impeller and the motor 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 wind with spiral case in wind cabinet
Machine, by the effect of blower fan, forms negative pressure while the gas in wind cabinet is discharged thus outside oil smoke is sucked cabinet wind cabinet
Interior, realize the purpose of fume-exhausting.
Increasingly focus on quality of life with people, the noise problem of range hood is increasingly taken seriously.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 at present range hood mainly or by the way of passive noise reduction, by sky
The mode of aerodynamics is optimized to centrifugal blower, spiral case, but this smoke evacuation air quantity often leading to range hood reduces, and drops
Effect of making an uproar is not fairly obvious.
Utility model content
Technical problem to be solved in the utility model is the problem existing for above-mentioned prior art, provides a kind of effective
Reduce the acoustic filter of the range hood of noise.
The technical scheme that this utility model solution above-mentioned technical problem is adopted is: a kind of acoustic filter of range hood, uses
In the outlet housing being arranged on described range hood exit it is characterised in that: the bottom of described acoustic filter is formed with cooking fume
Flow to mouth, top is formed with oil smoke air stream outlet, described acoustic filter includes muffler shell, described muffler shell is in hollow posts
Shape, is provided with the noise elimination structure passing through simultaneously absorption of noise for cooking fume stream in described muffler shell.
According to one side of the present utility model, described noise elimination structure includes the noise elimination being arranged in described muffler shell
Wall and be arranged on acoustical cotton between described noise elimination wall and muffler shell, between described muffler shell and noise elimination wall
Gap is all closed at top and bottom, and described cooking fume flows to the bottom that mouth is formed at described muffler shell, described cooking fume
Flow export is formed at the top of described noise elimination wall.
Preferably, for reaching more preferable noise reduction, described noise elimination wall offers multiple holes, the perforate of described noise elimination wall
Rate is 5%～50%.
According to other side of the present utility model, described noise elimination structure includes being arranged in described muffler shell extremely
Few two noise elimination walls, described noise elimination wall diametrically arranged for interval, described noise elimination wall offers multiple holes, outside described acoustic filter
Gap between shell and the noise elimination wall of inner side is all closed at top and bottom, described muffler shell and outermost noise elimination wall
Between constitute resonant cavity.
Preferably, for obtaining preferable noise reduction, it is unlikely to lose too big blast, the punching rate of described resonant cavity again
For 5%～10%.
According to other side of the present utility model, liquidated by air-flow, reach the effect of noise elimination, oil strain, described oil smoke
Airflow inlet is formed at the bottom of described muffler shell, and described oil smoke air stream outlet is formed at the top of described muffler shell
Portion, multiple dividing plates that described noise elimination structure includes being arranged in described muffler shell, multiple separator tube and extend described
The escape pipe of oil smoke air stream outlet, described dividing plate in the axial direction of described muffler shell arranged for interval thus by described acoustic filter
Inside the shell is separated into multiple cavitys vertically, and each separator tube passes through at least one dividing plate, and the plurality of separator tube, escape pipe make
Obtain gas communication between the plurality of cavity.
According to this utility model preferably, two dividing plates are set and form three cavitys, described dividing plate includes the first dividing plate
And second partition, the plurality of cavity is positioned at the first chamber between described muffler shell bottom and the first dividing plate, positioned at described
The second chamber between first dividing plate and second partition and the 3rd chamber being located at described second partition and muffler shell top,
Described separator tube includes air inlet separator tube and intermediate buffering pipe, described air inlet separator tube be located in described first chamber, the second chamber and
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
With the 3rd intracavity.
Further, for obtain preferable noise reduction, described separator tube offers sound attenuation hole, percent opening be 1%～
10%.
Further, for strengthening noise reduction, it is also provided with sound-absorbing structure in exit, described oil smoke air flow outlet setting
There is outlet partition plate, described outlet partition plate offers through hole, the top of described outlet partition plate is provided with acoustical cotton.
Compared with prior art, the utility model has the advantage of: set by the exit of the outlet housing in range hood
Put acoustic filter, reduce the noise of the oil smoke air-flow going out from outlet housing, preferable noise reduction can be obtained, and not affect air quantity.
Brief description
Fig. 1 is the schematic diagram of the range hood of acoustic filter application of the present utility model；
Fig. 2 is the decomposition texture schematic diagram of first embodiment of acoustic filter of the present utility model；
Fig. 3 is the schematic diagram of second embodiment of acoustic filter of the present utility model；
Fig. 4 is the sectional view of second embodiment of acoustic filter of the present utility model；
Fig. 5 is the schematic diagram of the 3rd embodiment of acoustic filter of the present utility model；
Fig. 6 is the sectional view of the 3rd embodiment of acoustic filter of the present utility model；
Specific embodiment
Below in conjunction with accompanying drawing embodiment, this utility model is described in further detail.
Embodiment one
Referring to Fig. 1, a kind of range hood, including exhaust fume collecting hood 1, the casing 2 that is arranged on exhaust fume collecting hood 1 top, setting in casing 2
There is blower fan 3.Air inlet is offered 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 to after casing 2.
The top of casing 2 is provided with outlet housing 21, for making the oil smoke in casing 2 can be discharged into outside casing 2.Outlet housing
21 exit is provided with acoustic filter 4, big for solving the problems, such as outlet noise.
Referring to Fig. 2, acoustic filter 4 includes muffler shell 41, the noise elimination wall 42 being arranged in muffler shell 41, setting
Acoustical cotton 43 between noise elimination wall 42 and muffler shell 41 and the upper lid 44 being arranged on muffler shell 41 top.Disappear
Sound device shell 41 is in hollow columnar, and noise elimination wall 42 is ring-type, such as circular or irregularly shaped, and such as petal-shaped opens up thereon
There are multiple holes 421, percent opening 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 is formed with oil smoke air stream outlet 412.Oil smoke air-flow flows to from cooking fume
After mouth 411 enters, pass 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 oil smoke air stream outlet 412.Acoustical cotton 43
For monolayer or multilamellar can be included, that is, include being respectively directed to the material of the noise of high frequency, intermediate frequency and low frequency.Upper lid 44
The top in gap between closing muffler shell 41 and noise elimination wall 42, and 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
Referring to Fig. 3 and Fig. 4, in the present embodiment, the difference with above-described embodiment one is, using double-layer cavity micropore generation
Scheme for above-mentioned micropore+acoustical cotton.Acoustic filter 4 ' includes muffler shell 41, noise elimination wall and upper lid 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 ', hide upper lid 44 in Fig. 3.
Wherein, the first noise elimination wall 42 ' and the second noise elimination wall 43 ' are all annular in shape such as circular or irregularly shaped, such as flower
Flap.The top in gap between upper lid 44 closing 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 bottom in gap between muffler shell 41 and the first noise elimination wall 42 '
Portion.Multiple first holes 421 ' are offered on the first noise elimination wall 42 ', the second noise elimination wall 43 ' offers multiple second holes 431 '.The
The distance between one noise elimination wall 42 ' and the second noise elimination wall 43 ' be δ 1,15mm≤δ 1≤60mm, the second noise elimination wall 43 ' and eliminate the noise
The distance between device shell 41 is δ 2,15mm≤δ 2≤60mm.
Resonant cavity 45 is formed by the closing space that muffler shell 41, upper lid 44 and the second noise elimination wall 43 ' form, above-mentioned
The first hole 421 ' and the second hole 431 ' concentrate on the position at corresponding resonant cavity 45 middle part, 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 realizing 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 preferably 5%～10%, so that disappear
Sound effective value well will not lose too big pressure again, reduces air quantity.
Embodiment three
Referring to Fig. 5 and Fig. 6, in the present embodiment, acoustic filter 4 " include hollow muffler shell 41, 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 " diametrically extend,
Thus the space in muffler shell 41 is separated into the cooking fume that the oil smoke airflow inlet 411 being opened up by bottom opens up to top
Three, flow export 412 direction (being seen as from left to right on Fig. 6, be from the bottom to top during installation) chamber, that is, be located at muffler shell 41 bottom
The second chamber 45 between the first chamber 44 between portion and the first dividing plate 42 " ", the first dividing plate 42 " and second partition 43 " ", Yi Ji
Two dividing plates 43 " and the 3rd chamber 46 at muffler shell 41 top ".It is provided with outlet partition plate 413 at oil smoke air stream outlet 412.Go out
Through hole is offered on mouth dividing plate 413, the shape of through hole can be variously-shaped for circle, square, regular hexagon etc..Outlet partition plate
413 top is provided with 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
The axial direction of pipe is axially in parallel with muffler shell 41, and at least across one of dividing plate.In the present embodiment, air inlet buffering
Pipe 47 " and intermediate buffering pipe 48 " respectively be located 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 " pass through the first dividing plate 42 "
With second partition 43 ", 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 oil smoke air stream outlet 412) of muffler shell 41, intermediate buffering pipe 48 " pass through second every
Plate 43 ", intermediate buffering pipe 48 " it is located at the second chamber 45 " and the 3rd chamber 46 "；Escape pipe 49 " passes through second partition 43 " and acoustic filter
Shell 41 top, positioned at the second chamber 45 " and the 3rd chamber 46 ".
The sound attenuation hole 471 of diameter 1～10mm is evenly distributed with air inlet separator tube 47 " and intermediate buffering pipe 48 " ", 481 ",
Percent opening 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 " enters into the 3rd chamber 46 after passing through ", back into intermediate buffering pipe 48 after bumping against outlet partition plate 413 ", and bump against again
Escape pipe 49 is backed into after outlet partition plate 413 " and discharge, being achieved in air-flow liquidates, and reaches the effect of noise elimination, oil strain, Fig. 6
Middle arrow represents air-flow direction of advance.
Claims (9)
1. a kind of acoustic filter of 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 oil smoke air stream outlet (412), described
Acoustic filter includes muffler shell (41), and described muffler shell (41) is in hollow columnar, sets in described muffler shell (41)
It is equipped with the noise elimination structure passing through simultaneously absorption of noise for cooking fume stream.
2. range hood as claimed in claim 1 acoustic filter 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 cotton (43), 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 oil smoke air stream outlet (412) be formed at described in disappear
The top of sound wall (42).
3. range hood as claimed in claim 2 acoustic filter 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. range hood as claimed in claim 1 acoustic filter it is characterised in that: described noise elimination structure includes being arranged on described
At least two noise elimination walls in muffler shell (41), described noise elimination wall diametrically arranged for interval, described noise elimination wall opens up
There are multiple holes, the gap between described muffler shell (41) and the noise elimination wall of 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. range hood as claimed in claim 4 acoustic filter it is characterised in that: the punching rate of described resonant cavity (45) is
5%～10%.
6. range hood as claimed in claim 1 acoustic filter it is characterised in that: described oil smoke airflow inlet (411) is formed
In the bottom of described muffler shell (41), described oil smoke air stream outlet (412) is formed at the top of described muffler shell (41)
Portion, multiple dividing plates that described noise elimination structure includes being arranged in described muffler shell (41), multiple separator tube and extend
The escape pipe (49 ") of described oil smoke air stream outlet (412), described dividing plate is spaced cloth in the axial direction of described muffler shell (41)
Put thus being separated into multiple cavitys vertically by described muffler shell (41), each separator tube passes through at least one dividing plate,
The plurality of separator tube, escape pipe (49 ") make gas communication between the plurality of cavity.
7. range hood as claimed in claim 6 acoustic filter it is characterised in that: described dividing plate includes the first dividing plate (42 ")
With second partition (43 "), the plurality of cavity is located between described muffler shell (41) bottom and the first dividing plate (42 ") the
One chamber (44 "), the second chamber being located between described first dividing plate (42 ") and second partition (43 ") (45 ") and positioned at described
3rd chamber (46 ") at second partition (43 ") and muffler shell (41) top, 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 "), described intermediate buffering pipe (48 ") is located in described second chamber (45 ") and the 3rd chamber (46 ") interior, described escape pipe
(49 ") are located in described second chamber (45 ") and the 3rd chamber (46 ").
8. range hood as claimed in claim 6 acoustic filter it is characterised in that: offer sound attenuation hole on described separator tube,
Percent opening is 1%～10%.
9. range hood as claimed in claim 6 acoustic filter it is characterised in that: described oil smoke air stream outlet (412) place sets
It is equipped with outlet partition plate (413), described outlet partition plate (413) offers through hole, the top of described outlet partition plate (413) is provided with
Acoustical cotton (414).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620782951.3U CN205895706U (en) | 2016-07-22 | 2016-07-22 | Range hood's silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620782951.3U CN205895706U (en) | 2016-07-22 | 2016-07-22 | Range hood's silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205895706U true CN205895706U (en) | 2017-01-18 |
Family
ID=57784411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620782951.3U Active CN205895706U (en) | 2016-07-22 | 2016-07-22 | Range hood's silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205895706U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050751A (en) * | 2016-07-22 | 2016-10-26 | 宁波方太厨具有限公司 | Silencer of range hood |
| 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 |
-
2016
- 2016-07-22 CN CN201620782951.3U patent/CN205895706U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050751A (en) * | 2016-07-22 | 2016-10-26 | 宁波方太厨具有限公司 | Silencer of range hood |
| 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 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |