CN108758748A - A kind of low-noise exhauster for removing cooking fumes and noise-reduction method - Google Patents
A kind of low-noise exhauster for removing cooking fumes and noise-reduction method Download PDFInfo
- Publication number
- CN108758748A CN108758748A CN201810863495.9A CN201810863495A CN108758748A CN 108758748 A CN108758748 A CN 108758748A CN 201810863495 A CN201810863495 A CN 201810863495A CN 108758748 A CN108758748 A CN 108758748A
- Authority
- CN
- China
- Prior art keywords
- shell
- noise
- acoustical panel
- wind turbine
- turbine assembly
- 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.)
- Granted
Links
- 238000010411 cooking Methods 0.000 title claims abstract description 24
- 239000003517 fume Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000002955 isolation Methods 0.000 claims description 14
- 239000000779 smoke Substances 0.000 claims description 8
- 239000003921 oil Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a kind of low-noise exhauster for removing cooking fumes and noise-reduction methods, to reduce the noise generated when range hood work.The low-noise exhauster for removing cooking fumes includes shell, and the wind turbine turbine assembly and muffler containing shell in shell inner cavity, the shell of wind turbine turbine assembly is connect with outer casing inner wall, muffler is connected with the shell of wind turbine turbine assembly, and forms seal cavity between the shell and muffler of wind turbine turbine assembly.
Description
Technical field
The present invention relates to a kind of range hoods, it particularly relates to a kind of low-noise exhauster for removing cooking fumes and noise-reduction method.
Background technology
In China, range hood is a kind of common household electrical appliance.Range hood is used to adsorb what cooking generated in the process
Oil smoke, and oil smoke is drained into outdoor.Existing range hood generally includes shell, turbine, motor, fan blade etc..Motor drives whirlpool
Wheel and fan blade rotation, so that enclosure generates negative pressure, and then adsorb the oil smoke positioned at outer side.It is set on the outside of turbine
There are shell, shell and cage connection.It is larger that the range hood of the structure generates noise at work, keeps human body uncomfortable.
Invention content
The technical problem to be solved by the present invention is to：A kind of low-noise exhauster for removing cooking fumes and noise-reduction method are provided, inhaled with reducing
The noise that kitchen ventilator generates when working.
To solve above-mentioned technical problem：The present invention uses following technical scheme：
On the one hand, the embodiment of the present invention provides a kind of low-noise exhauster for removing cooking fumes, including shell, and containing in shell inner cavity
There are the wind turbine turbine assembly and muffler of shell, the shell of wind turbine turbine assembly to be connect with outer casing inner wall, muffler and wind turbine whirlpool
The shell of wheel assembly connects, and forms seal cavity between the shell and muffler of wind turbine turbine assembly.
As preference, the low-noise exhauster for removing cooking fumes further includes isolation board, the isolation board respectively with muffler and
The shell of wind turbine turbine assembly connects so that forms seal cavity between muffler and the shell of wind turbine turbine assembly.
As preference, the low-noise exhauster for removing cooking fumes further includes preceding acoustical panel, and the preceding acoustical panel is located at shell
It is interior, preceding acoustical panel and cage connection, and it is opposite with the advance air port of wind turbine turbine assembly.
As preference, the angle between the preceding acoustical panel and shell foreboard is 0-10 °, and preceding acoustical panel bottom end is extremely
The distance of shell foreboard is equal to or less than preceding acoustical panel top to the distance of shell foreboard.
As preference, the preceding acoustical panel is laid vertically.
As preference, the low-noise exhauster for removing cooking fumes further includes rear acoustical panel, and the rear acoustical panel is located at shell
It is interior, rear acoustical panel and cage connection, and it is opposite with the rear air inlet of wind turbine turbine assembly.
As preference, the rear angle between acoustical panel and shell back plate is 0-10 °, and rear acoustical panel bottom end is extremely
The distance of shell back plate is equal to or less than rear acoustical panel top to the distance of shell back plate.
As preference, the rear acoustical panel is laid vertically.
As preference, the preceding acoustical panel and rear acoustical panel absorb centrifugal fan noise, reduce in shell and wind turbine whirlpool
Roundtrip noise between wheel assembly.
On the other hand, the embodiment of the present invention also provides a kind of range hood noise-reduction method, including：
Isolation board is connected on the shell of muffler and wind turbine turbine assembly so that the shell and muffler of wind turbine turbine assembly
Between form seal cavity；
Start wind turbine turbine assembly, generate negative pressure, passes through the air inlet of shell to enter wind turbine turbine group with air-flow in extraneous oil smoke
In part；Air-flow is reduced using seal cavity and generates quadratic noise, and is reduced anti-back and forth between shell and wind turbine turbine assembly
Penetrate noise.
As preference, the range hood noise-reduction method further includes：Preceding acoustical panel is placed in shell, and before disappear
Soundboard is opposite with the advance air port on the shell of wind turbine turbine assembly.
As preference, the range hood noise-reduction method further includes：Rear acoustical panel is placed in shell, and after disappear
Soundboard is opposite with the rear air inlet on the shell of wind turbine turbine assembly.
Compared with prior art, it is generated when the low-noise exhauster for removing cooking fumes of the embodiment of the present invention can reduce range hood work
Noise.The range hood of the embodiment of the present invention includes shell and wind turbine turbine assembly.Wind turbine turbine assembly contains shell.Wind turbine
The shell of turbine assembly is connect with outer casing inner wall, and forms seal cavity between the shell and shell of wind turbine turbine assembly.It is existing
It is only to be located by connecting between the shell and shell of wind turbine turbine assembly in technology, is not formed between shell and shell closed
Space.Wind turbine turbine assembly generates noise when working.By will be sealed between shell and shell, seal cavity, Ke Yixian are formed
Writing reduces noise.
Description of the drawings
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the assembling schematic diagram of muffler in the embodiment of the present invention, isolation board and wind turbine turbine assembly；
Fig. 3 is the assembling schematic diagram of muffler and isolation board in the embodiment of the present invention.
Have in figure：Shell 1, wind turbine turbine assembly 2, shell 201, preceding acoustical panel 3, rear acoustical panel 4, muffler 5, isolation board
6。
Specific implementation mode
Below in conjunction with the accompanying drawings, technical scheme of the present invention is described in detail.
As depicted in figs. 1 and 2, the range hood of the embodiment of the present invention, including shell 1, and in 1 inner cavity of shell
Wind turbine turbine assembly 2 containing shell 201 and muffler 5.Wind turbine turbine assembly 2 is connect with 1 inner wall of shell, muffler 5 and wind
The shell 201 of machine turbine assembly connects.Seal cavity is formed between the shell 201 and muffler 5 of wind turbine turbine assembly.
In above-described embodiment, seal cavity is formed between the shell 201 and muffler 5 of wind turbine turbine assembly.The prior art
In, muffler 5 is connected on the shell 201 of wind turbine turbine assembly, there is gap between the two, is connected to air intake passage and muffler 5
Inner cavity.Sealing space is not formed between shell 201 and muffler 5.Wind turbine turbine assembly 2 generates noise when working.Passing through will
Shell 201 and muffler 5 connect, and form seal cavity, can reduce noise.It is formed after seal cavity, air intake passage is more
It is smooth, reduce the quadratic noise that air-flow generates.Meanwhile seal cavity can reduce inside cavity and make an uproar sonic propagation, and contribute to
Reduce the roundtrip noise between blower fan panel and centrifugal blower.
Shell 201 is connect with muffler 5, and to reach sealing effect, sealing element can be separately provided, respectively with shell 201
It is connected with muffler 5, sealing element and muffler 5 can also be set as to one, it is whole to be connect with shell 201.For ease of assembling and
Dismounting, is preferably separately provided sealing element.For example, as shown in figure 3, sealing element is isolation board 6.Isolation board 6 respectively with muffler 5 and
The shell 201 of wind turbine turbine assembly connects so that forms seal cavity between muffler 5 and the shell 201 of wind turbine turbine assembly.
In this way, due to the blocking of isolation board 6, so the air-flow in air intake passage between shell 1 and shell 201, will not be directly entered
In seal cavity, but across the air inlet of shell 201, into wind turbine turbine assembly 2.
As preference, the range hood further includes preceding acoustical panel 3, and preceding acoustical panel 3 is located in shell 1, preceding acoustical panel 3
It is connect with shell 1, and opposite with the advance air port of wind turbine turbine assembly 2.Wind turbine turbine assembly 2 includes advance air port and rear air inlet
Mouthful.Preceding acoustical panel 3 is made of the material with erasure effect, such as polyester fiber, foamed plastics etc..When work, people is located at wind
The front in the advance air port of machine turbine assembly 2, so the acoustical panel 3 before the setting of the front of shell 1, can significantly reduce noise pair
The damage of people's hearing.Wind turbine turbine assembly 2 generates noise when working, mainly by the advance air port of wind turbine turbine assembly 2, laggard
It propagates outward in air port.Therefore, preceding acoustical panel 3 is opposite with the advance air port of wind turbine turbine assembly 2, noise can be significantly reduced.
As preference, the angle between 1 foreboard of the preceding acoustical panel 3 and shell is 0-10 °, and 3 bottom end of preceding acoustical panel
Distance to 1 foreboard of shell is equal to or less than 3 top of preceding acoustical panel to the distance of 1 foreboard of shell.Preceding acoustical panel 3 and shell 1
Angle between foreboard is set as in 0-10 °.In this way, the shell 201 of 1 foreboard of shell and wind turbine turbine assembly 2 is formed
For advancing air channel, the setting of preceding acoustical panel 3 does not influence air-flow and is flowed in advancing air channel.If preceding acoustical panel 3 with it is outer
Angle between 1 foreboard of shell is excessive, then can cause to hinder to the flowing of air-flow, reduces air velocity.
In the prior art, the channel formed between acoustical panel 3 and 201 surface of shell of wind turbine turbine assembly 2 is gradual change,
In order to eliminate the noise before oil smoke enters shell 201.And this preference, it makes an uproar using to the work generation of wind turbine turbine assembly 2
Sound is eliminated the noise.The partial noise that the work of wind turbine turbine assembly 2 generates enters preceding acoustical panel 3 and wind turbine turbine by advance air port
Channel between 201 surface of shell of component 2 absorbs noise by preceding acoustical panel 3.
Preferably, the preceding acoustical panel 3 is laid vertically.The entire advance air port phase of preceding acoustical panel 3 and wind turbine turbine assembly 2
It is right.Air-flow containing oil smoke is entered from the external world by the air intake passage between preceding acoustical panel 3 and the shell 201 of wind turbine turbine assembly
In advance air port.Preceding acoustical panel 3 is laid vertically so that intake velocity is unaffected.
To further decrease noise, the low-noise exhauster for removing cooking fumes further includes rear acoustical panel 4, and the rear acoustical panel 4 is located at
In shell 1, rear acoustical panel 4 is connect with shell 1, and opposite with the rear air inlet of wind turbine turbine assembly 2.The material of acoustical panel 4 afterwards
Can be identical as preceding acoustical panel 3, it can also be different, if it is made of the material with erasure effect, such as polyester fiber,
Foamed plastics etc..
Wind turbine turbine assembly 2 generates noise when working, and mainly passes through the advance air port of wind turbine turbine assembly 2, rear air inlet
It propagates outward.Therefore, rear acoustical panel 4 is opposite with the rear air inlet of wind turbine turbine assembly 2, noise can be reduced.
As preference, the angle between 1 back plate of the rear acoustical panel 4 and shell is 0-10 °, and rear 4 bottom end of acoustical panel
Distance to 1 back plate of shell is equal to or less than 4 top of rear acoustical panel to the distance of 1 back plate of shell.Acoustical panel 4 and shell 1 afterwards
Angle between back plate is in 0-10 °.In this way, being formed for the shell 201 of 1 back plate of shell and wind turbine turbine assembly 2 laggard
For wind channel, the setting of rear acoustical panel 4 does not influence air-flow and is flowed in rear air intake passage.If rear acoustical panel 4 and shell 1
Angle between back plate is excessive, then can cause to hinder to the flowing of air-flow, reduces air velocity.
Preferably, the rear acoustical panel 4 is laid vertically.The entire rear air inlet phase of acoustical panel 4 and wind turbine turbine assembly 2 afterwards
It is right.Acoustical panel 4 is laid vertically afterwards so that intake velocity is unaffected.
This preference is eliminated the noise using the noise generated to the work of wind turbine turbine assembly 2.Wind turbine turbine assembly 2 works
The partial noise of generation is entered logical between rear acoustical panel 4 and 201 surface of shell of wind turbine turbine assembly 2 by rear air inlet
Road absorbs noise by rear acoustical panel 4.
In above-described embodiment or preference, centrifugal fan noise can be approximately considered and be impinged perpendicularly on by air inlet
On the panel of shell.Therefore, preceding acoustical panel 3 and rear acoustical panel 4 are laid on casing of kitchen ventilator, it can maximal efficiency absorption centrifugal blower
Noise, meanwhile, reduce the roundtrip noise between shell and wind turbine.
The embodiment of the present invention also provides a kind of range hood noise-reduction method, including：
Isolation board 6 is connected on the shell 201 of muffler 5 and wind turbine turbine assembly so that the shell 201 of wind turbine turbine assembly
Seal cavity is formed between muffler 5；
Start wind turbine turbine assembly 2, generate negative pressure, passes through the air inlet of shell 201 to enter wind turbine whirlpool with air-flow in extraneous oil smoke
In wheel assembly 2；Air-flow is reduced using seal cavity and generates quadratic noise, and is reduced between shell 1 and wind turbine turbine assembly 2
Roundtrip noise.
Isolation board 6 is arranged in above-mentioned noise-reduction method on shell 201 and muffler 5, be isolated between shell 201 and shell 1 into
Wind channel and 5 inner cavity of muffler.In this way, after air-flow enters air intake passage, enter wind turbine turbine group from the air inlet on shell 201
In part 2, without being directly entered in 5 inner cavity of muffler.If air-flow directly enters 5 inner cavity of muffler from air intake passage,
Vortex is will produce, noise reduction is unfavorable for.It being formed after seal cavity between shell 201 and silencer 5, air intake passage is more smoothly,
Reduce the quadratic noise that air-flow generates.
As preference, above-mentioned noise-reduction method further includes：Preceding acoustical panel 3 is placed in shell 1, and preceding acoustical panel 3 and wind
Advance air port on the shell 201 of machine turbine assembly is opposite.
The noise that above-mentioned preference generates the work of wind turbine turbine assembly 2 is eliminated the noise.The work of wind turbine turbine assembly 2 generates
Partial noise pass through wind turbine turbine assembly 2 shell 201 on advance air port enter preceding acoustical panel 3 and 201 surface of shell it
Between advancing air channel in, pass through preceding acoustical panel 3 and absorb noise, reduce roundtrip of the noise between shell 1 and shell 201
Noise.
As preference, above-mentioned noise-reduction method further includes：Rear acoustical panel 4 is placed in shell（1）In, and rear acoustical panel 4 with
Rear air inlet on the shell 201 of wind turbine turbine assembly is opposite.
The noise that above-mentioned preference generates the work of wind turbine turbine assembly 2 is eliminated the noise.The work of wind turbine turbine assembly 2 generates
Partial noise pass through wind turbine turbine assembly 2 shell 201 on rear air inlet enter rear acoustical panel 4 and 201 surface of shell it
Between rear air intake passage in, pass through rear acoustical panel 4 and absorb noise, reduce roundtrip of the noise between shell 1 and shell 201
Noise.
There is good noise reduction effect using the range hood of technical solution of the present invention below by experimental verification.
Sample 1
A kind of low-noise exhauster for removing cooking fumes, technical solution using the present invention will be close between the shell and shell of wind turbine turbine assembly
Connection is closed, seal cavity is formed.But it is not provided with preceding acoustical panel and rear acoustical panel.The power of wind turbine is 261w.Before on shell
The diameter of air inlet and rear air inlet is 205mm.Wind turbine frame（That is shell）Size is high 435 mm, long 380 mm, wide by 320
mm。
Sample 2
It is identical as 1 structure of sample, but also increase and preceding acoustical panel and rear acoustical panel are set.Preceding acoustical panel and wind turbine turbine assembly
Advance air port is opposite.Acoustical panel is opposite with the rear air inlet of wind turbine turbine assembly afterwards.The size of preceding acoustical panel is long 406mm, wide
302 mm.The size of acoustical panel is long 400mm, wide 345 mm afterwards.
Sample 3
A kind of low-noise exhauster for removing cooking fumes will not have airtight connection, before being not provided between the shell and shell of wind turbine turbine assembly yet
Acoustical panel and rear acoustical panel.
According to national standard GB/T 17713-2011, noise reduction test is carried out to the range hood of above-mentioned sample.Test result is such as
Under：
It was found from above-mentioned test result：Sample 3 is not provided with the seal cavity of the present invention and acoustical panel, noise data are
71.4db.Sample 1 is provided with the seal cavity of the present invention, but is not provided with acoustical panel, noise data 70.3db.Compared to sample
Product 3,1 noise of sample reduce 1.1 db.Sample 2 is provided with the seal cavity of the present invention and front and back acoustical panel, noise data
For 67.4db.Compared to sample 3,2 noise of sample reduces 4db.
The basic principles, main features and advantages of the invention have been shown and described above.Those skilled in the art should
Understand, the present invention do not limited by above-mentioned specific embodiment, the description in above-mentioned specific embodiment and specification be intended merely into
One step illustrates the principle of the present invention, without departing from the spirit and scope of the present invention, the present invention also have various change and
It improves, these changes and improvements all fall within the protetion scope of the claimed invention.The scope of protection of present invention is wanted by right
Ask book and its equivalent thereof.
Claims (12)
1. a kind of low-noise exhauster for removing cooking fumes, which is characterized in that including shell（1）, and it is located at shell（1）Contain shell in inner cavity
Body（201）Wind turbine turbine assembly（2）And muffler（5）, the shell of wind turbine turbine assembly（201）With shell（1）Inner wall connects,
Muffler（5）With the shell of wind turbine turbine assembly（201）Connection, and the shell of wind turbine turbine assembly（201）And muffler（5）It
Between form seal cavity.
2. low-noise exhauster for removing cooking fumes described in accordance with the claim 1, which is characterized in that further include isolation board（6）, the isolation board
（6）Respectively with muffler（5）With the shell of wind turbine turbine assembly（201）Connection so that muffler（5）With wind turbine turbine assembly
Shell（201）Between form seal cavity.
3. low-noise exhauster for removing cooking fumes described in accordance with the claim 1, which is characterized in that further include preceding acoustical panel（3）, disappear before described
Soundboard（3）Positioned at shell（1）It is interior, preceding acoustical panel（3）With shell（1）Connection, and with wind turbine turbine assembly（2）Advance air port phase
It is right.
4. low-noise exhauster for removing cooking fumes described in accordance with the claim 3, which is characterized in that the preceding acoustical panel（3）With shell（1）Before
Angle between plate is 0-10 °, and preceding acoustical panel（3）Bottom end is to shell（1）The distance of foreboard is equal to or less than preceding acoustical panel
（3）Top is to shell（1）The distance of foreboard.
5. low-noise exhauster for removing cooking fumes described in accordance with the claim 3, which is characterized in that the preceding acoustical panel（3）It is vertical to lay.
6. low-noise exhauster for removing cooking fumes described in accordance with the claim 3, which is characterized in that further include rear acoustical panel（4）, disappear after described
Soundboard（4）Positioned at shell（1）It is interior, rear acoustical panel（4）With shell（1）Connection, and with wind turbine turbine assembly（2）Rear air inlet phase
It is right.
7. low-noise exhauster for removing cooking fumes according to claim 6, which is characterized in that acoustical panel after described（4）With shell（1）Afterwards
Angle between plate is 0-10 °, and rear acoustical panel（4）Bottom end is to shell（1）The distance of back plate is equal to or less than rear acoustical panel
（4）Top is to shell（1）The distance of back plate.
8. low-noise exhauster for removing cooking fumes according to claim 7, which is characterized in that acoustical panel after described（4）It is vertical to lay.
9. low-noise exhauster for removing cooking fumes according to claim 6, which is characterized in that the preceding acoustical panel（3）With rear acoustical panel
（4）Centrifugal fan noise is absorbed, is reduced in shell（1）With wind turbine turbine assembly（2）Between roundtrip noise.
10. a kind of range hood noise-reduction method, which is characterized in that the method includes：
By isolation board（6）It is connected to muffler（5）With the shell of wind turbine turbine assembly（201）On so that wind turbine turbine assembly
Shell（201）And muffler（5）Between form seal cavity；
Start wind turbine turbine assembly（2）, negative pressure is generated, extraneous oil smoke is passed through into shell with air-flow（201）Air inlet into inlet air
Machine turbine assembly（2）In；Air-flow is reduced using seal cavity and generates quadratic noise, and is reduced in shell（1）With wind turbine turbine group
Part（2）Between roundtrip noise.
11. range hood noise-reduction method according to claim 10, which is characterized in that further include：
By preceding acoustical panel（3）It is placed in shell（1）In, and preceding acoustical panel（3）With the shell of wind turbine turbine assembly（201）On before
Air inlet is opposite.
12. according to the range hood noise-reduction method described in claim 10 or 11, which is characterized in that further include：
By rear acoustical panel（4）It is placed in shell（1）In, and rear acoustical panel（4）With the shell of wind turbine turbine assembly（201）On after
Air inlet is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810863495.9A CN108758748B (en) | 2018-08-01 | 2018-08-01 | Low-noise range hood and noise reduction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810863495.9A CN108758748B (en) | 2018-08-01 | 2018-08-01 | Low-noise range hood and noise reduction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108758748A true CN108758748A (en) | 2018-11-06 |
| CN108758748B CN108758748B (en) | 2024-04-12 |
Family
ID=63968360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810863495.9A Active CN108758748B (en) | 2018-08-01 | 2018-08-01 | Low-noise range hood and noise reduction method |
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| Country | Link |
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| CN (1) | CN108758748B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202074595U (en) * | 2011-05-11 | 2011-12-14 | 浙江帅康电气股份有限公司 | Guide type fume extractor |
| CN102748787A (en) * | 2012-06-15 | 2012-10-24 | 海尔集团公司 | Low noise range hood equipped with diversion noise reducing acoustical panel |
| CN203628765U (en) * | 2013-11-30 | 2014-06-04 | 宁波方太厨具有限公司 | Mute type range hood |
| 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 |
| CN206755301U (en) * | 2017-05-10 | 2017-12-15 | 佛山市樱顺卫厨用品有限公司 | A kind of noise reduction range hood |
| CN208750799U (en) * | 2018-08-01 | 2019-04-16 | 浙江帅康电气股份有限公司 | A kind of low-noise exhauster for removing cooking fumes |
-
2018
- 2018-08-01 CN CN201810863495.9A patent/CN108758748B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202074595U (en) * | 2011-05-11 | 2011-12-14 | 浙江帅康电气股份有限公司 | Guide type fume extractor |
| CN102748787A (en) * | 2012-06-15 | 2012-10-24 | 海尔集团公司 | Low noise range hood equipped with diversion noise reducing acoustical panel |
| CN203628765U (en) * | 2013-11-30 | 2014-06-04 | 宁波方太厨具有限公司 | Mute type range hood |
| 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 |
| CN206755301U (en) * | 2017-05-10 | 2017-12-15 | 佛山市樱顺卫厨用品有限公司 | A kind of noise reduction range hood |
| CN208750799U (en) * | 2018-08-01 | 2019-04-16 | 浙江帅康电气股份有限公司 | A kind of low-noise exhauster for removing cooking fumes |
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| Publication number | Publication date |
|---|---|
| CN108758748B (en) | 2024-04-12 |
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