CN107339263A - A kind of auxiliary denoising device for cooking-fume exhauster blower system - Google Patents
A kind of auxiliary denoising device for cooking-fume exhauster blower system Download PDFInfo
- Publication number
- CN107339263A CN107339263A CN201710154243.4A CN201710154243A CN107339263A CN 107339263 A CN107339263 A CN 107339263A CN 201710154243 A CN201710154243 A CN 201710154243A CN 107339263 A CN107339263 A CN 107339263A
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- Prior art keywords
- noise reduction
- splitting ring
- wall
- cooking
- cavity
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- 239000003517 fume Substances 0.000 title claims abstract description 19
- 230000009467 reduction Effects 0.000 claims abstract description 92
- 230000030279 gene silencing Effects 0.000 claims description 14
- 239000007789 gas Substances 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
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
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- 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
- 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)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of auxiliary denoising device for cooking-fume exhauster blower system, including blower fan, splitting ring is provided with the impeller internal of blower fan, it is characterised in that：Splitting ring is fixed splitting ring, and splitting ring includes inner and outer wall, noise reduction cavity has been internally formed in splitting ring, and the noise reduction hole being connected with noise reduction cavity is provided with inwall and/or outer wall.The advantage of the invention is that：This is used for the auxiliary denoising device of cooking-fume exhauster blower system by being internally formed noise reduction cavity in splitting ring, the noise reduction hole being connected with noise reduction cavity is provided with inwall and/or outer wall, when motor is pointed in noise reduction hole, the low frequency noise that motor is sent can be absorbed, and absorb partial pneumatic noise, in addition, because air intake gas changes airintake direction under the water conservancy diversion of current divider, gas current divider guide face hit, friction and produce mechanicalness noise, therefore, when the air intake surface of blower fan is pointed in noise reduction hole, it can significantly reduce noise caused by gas.
Description
Technical field
The present invention relates to a kind of blower fan system of range hood, more particularly, to a kind of for cooking-fume exhauster blower system
Aid in denoising device.
Background technology
At present, in order to improve the performance of the blower fan system of range hood, a kind of relatively conventional improved structure is in blower fan
Impeller internal set current divider.In Application No. 201610102431.8 (application publication number is CN 105546613A)
Disclosed in state's application for a patent for invention《There is the series connection blower fan of the part flow arrangement for the part flow arrangement of range hood and application》, should
Part flow arrangement includes current divider, and current divider includes multiple splitting rings, and splitting ring is radially spaced cloth from inside to outside current divider
Put, the side of each splitting ring from diverter shaft to first end extend to the second end and form guide face.Although the series connection wind
The current divider that machine is formed by being provided with multiple diametrically spaced apart splitting rings, is shunted layer by layer to the air-flow of process
Fifty-fifty distributed folding relatively afterwards to be guided out, the flow that air-flow passes through can be increased, reduce the noise that fluid passes through, and then improve
The performance of whole blower fan system, still, the current divider are to reduce noise only by shunting guiding is carried out to air-flow, not
Consider how to reduce low frequency noise caused by blower motor, also, air intake gas is under the water conservancy diversion of the guide face of current divider
After changing airintake direction, hit in guide face, friction and produce mechanicalness noise, and because the guide face of current divider is smooth song
Face, therefore, this current divider can not reduce aerodynamic noise caused by air impingement.
The content of the invention
The technical problems to be solved by the invention are to be directed to above-mentioned state of the art, there is provided a kind of simple in construction, noise reduction
The good auxiliary denoising device for cooking-fume exhauster blower system of effect.
Technical scheme is used by the present invention solves above-mentioned technical problem：This is used for the auxiliary of cooking-fume exhauster blower system
Denoising device, including blower fan, splitting ring is installed in the impeller internal of the blower fan, it is characterised in that：Described splitting ring is
Fixed splitting ring, described splitting ring include inner and outer wall, noise reduction cavity have been internally formed in the splitting ring, described
Inwall and/or outer wall on be provided with the noise reduction hole being connected with the noise reduction cavity.
As a kind of preferred scheme, the cavity between the inwall and outer wall forms described noise reduction cavity, in described
Described noise reduction hole is provided with wall or outer wall.
In order to further improve noise reduction, the inside of the noise reduction cavity is divided into multiple independent silencing cavities, each
Independent silencing cavity is corresponding with least one described noise reduction hole.
Splitting ring can have different quantity, it is preferable that described splitting ring at least two, the splitting ring is along leaf
That takes turns is axially arranged, formed with air intake gap between adjacent splitting ring.
In order to effectively absorb the motor noise of blower fan, described splitting ring includes interior splitting ring and external shunt circle, described interior
The noise reduction hole of splitting ring is opened on the inwall of interior splitting ring, and the noise reduction hole of the external shunt circle is opened on the inwall of external shunt circle.
In order to effectively drop low wind noise, described splitting ring includes interior splitting ring and external shunt circle, the drop of the interior splitting ring
Hole of making an uproar is opened on the outer wall of interior splitting ring, and the noise reduction hole of external shunt circle is opened on the outer wall of external shunt circle.
In order that denoising device can absorb motor noise, and can drop low wind noise, described splitting ring includes interior splitting ring
With external shunt circle, the noise reduction hole of the interior splitting ring is opened on the inwall of interior splitting ring, and the noise reduction hole of external shunt circle is opened in outer point
On the outer wall for flowing circle.
Splitting ring can have a variety of fixed structures, it is preferable that be provided with afflux circle, adjacent shunting in the air inlet of blower fan
It is interconnected and fixed between circle by head rod, outermost splitting ring fixes described afflux circle by the second connecting rod
On.
As another preferred scheme, the inside of the splitting ring is provided with midfeather, shape between the midfeather and inwall
Into the first noise reduction cavity, the second noise reduction cavity is formed between the midfeather and outer wall, is provided with the inwall and the described first drop
The noise reduction hole that chamber of making an uproar is connected, the noise reduction hole being connected with second noise reduction cavity is provided with the outer wall.
In order to further improve noise reduction, it is preferable that described the first noise reduction cavity and the second noise reduction cavity is divided into
Multiple independent silencing cavities, each silencing cavity are corresponding with least one described noise reduction hole.
Compared with prior art, the advantage of the invention is that：This is used for the auxiliary denoising device of cooking-fume exhauster blower system
By being internally formed noise reduction cavity in splitting ring, the noise reduction hole being connected with noise reduction cavity is provided with inwall and/or outer wall, works as drop
Hole make an uproar when pointing to motor, the low frequency noise that motor is sent can be absorbed, and absorb partial pneumatic noise, further, since air intake gas
Change airintake direction under the water conservancy diversion of current divider, gas is hit in the guide face of current divider, friction and produce mechanicalness noise, because
This, when the air intake surface of blower fan is pointed in noise reduction hole, can significantly reduce noise caused by gas.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention one；
Fig. 2 is the structure sectional view of the embodiment of the present invention one；
Fig. 3 is the structural representation of the splitting ring of the embodiment of the present invention one；
Fig. 4 is the structure sectional view of splitting ring shown in Fig. 3；
Fig. 5 is the perspective exploded view of splitting ring shown in Fig. 3；
Fig. 6 is the structural representation of the splitting ring of the embodiment of the present invention two；
Fig. 7 is the structural representation of the splitting ring of the embodiment of the present invention three；
Fig. 8 is the perspective exploded view of splitting ring shown in Fig. 7；
Fig. 9 is the structural representation of the splitting ring of the embodiment of the present invention four；
Figure 10 is the structural representation of the splitting ring of the embodiment of the present invention five；
Figure 11 is the structural representation of the splitting ring of the embodiment of the present invention six.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
As shown in Figures 1 to 5, the auxiliary denoising device for cooking-fume exhauster blower system in the embodiment of the present invention includes
Blower fan 1, the air inlet of blower fan 1 are provided with afflux circle 5, the inside of draught fan impeller 2 installation splitting ring 3.Splitting ring 3 in the present embodiment
For double-deck diversion circle, i.e. the splitting ring 3 includes interior splitting ring 3a and external shunt circle 3b totally two splitting rings, interior splitting ring 3a and outer
Splitting ring 3b is axially arranged along impeller 2, and formed with air intake gap 4 between interior splitting ring 3a and external shunt circle 3b.Interior point
Stream circle 3a and external shunt circle 3b is fixed splitting ring, passes through the phase of head rod 61 between interior splitting ring 3a and external shunt circle 3b
Connected fixation, and external shunt circle 3b is fixed on afflux circle 5 by the second connecting rod 62.
Wherein, interior splitting ring 3a and external shunt circle 3b includes inwall 31 and outer wall 32, interior splitting ring 3a inwall 31
Noise reduction cavity 33 is respectively formed between outer wall 32 and between external shunt circle 3b inwall 31 and outer wall 32, in interior splitting ring 3a
Wall 31 and external shunt circle 3b inwall 31 are provided with the noise reduction hole 34 being connected with respective noise reduction cavity 33, as a result, interior shunting
Circle 3a and external shunt circle 3b noise reduction cavity 33 is respectively formed helmholtz resonance chamber.In the present embodiment, interior splitting ring 3a noise reduction hole
34, towards blower motor 7, can be used for absorbing the low frequency noise that motor 7 is sent, and absorb partial pneumatic noise.In addition, interior point
After air-flow is oriented to by stream circle 3a, the air-flow between interior splitting ring 3a and external shunt circle 3b is relatively concentrated, air velocity is fast, and
External shunt circle 3b noise reduction hole 34 is equivalent to the air-flow concentrated towards this strand, therefore, noise reductions of the external shunt circle 3b to this strand of air-flow
It can become apparent from.
Embodiment two：
As shown in fig. 6, the splitting ring 3 of the present embodiment also includes on interior splitting ring 3a and external shunt circle 3b, interior splitting ring 3a
Noise reduction hole 34 be opened on inwall 31, external shunt circle 3b noise reduction hole 34 is opened on outer wall 32, in remaining structure and embodiment one
Structure it is identical.In the present embodiment, interior splitting ring 3a noise reduction hole 34 can absorb motor noise, divide outside towards blower motor
Stream circle 3b noise reduction hole 34 towards blower fan air intake direction, can be greatly decreased air intake gas because hit splitting ring surface and caused by
Noise.
Embodiment three：
As shown in Figure 7 and Figure 8, the splitting ring 3 of the present embodiment also includes interior splitting ring 3a and external shunt circle 3b, interior splitting ring
Noise reduction hole 34 on 3a is opened on inwall 31, and external shunt circle 3b noise reduction hole 34 is also opened on inwall 31, so, interior splitting ring 3a
Inwall 31 and outer wall 32 between and external shunt circle 3b inwall 31 and outer wall 32 between be respectively formed noise reduction cavity 33.In addition, this
Multiple independent silencing cavities 35 are also divided into inside the noise reduction cavity 33 of embodiment, each independent silencing cavity 35 is corresponding with one
Noise reduction hole 34, after multiple independent silencing cavities 35, noise reduction is more preferable.It is of course also possible to use one independent
Silencing cavity corresponds to the structure in more than one noise reduction hole.
Example IV：
As shown in figure 9, the splitting ring 3 of the present embodiment only has one, the noise reduction hole 34 of the splitting ring 3 is opened on inwall 31,
So, noise reduction hole 34 can absorb motor noise towards blower motor.
Embodiment five：
As shown in Figure 10, the splitting ring 3 of the present embodiment only has one, and the noise reduction hole 34 of splitting ring 3 is opened on outer wall 32, this
Sample, the noise reduction hole of splitting ring 3 can be greatly decreased air intake gas and be produced because hitting current divider surface towards blower fan air intake direction
Noise.
Embodiment six：
As shown in figure 11, the splitting ring 3 in the present embodiment only have one, the splitting ring 3 include inwall 31, outer wall 32 and in
Partition 36, the first noise reduction cavity 37 is formed between midfeather 36 and inwall 31, the second noise reduction is formed between midfeather 36 and outer wall 32
Chamber 38, not perforate on midfeather 36, is provided with the noise reduction hole 34 being connected with the first noise reduction cavity 37, on outer wall 32 on inwall 31
It is provided with the noise reduction hole 34 being connected with the second noise reduction cavity 38.Thus, wherein, the first noise reduction cavity 37 is mainly used to absorption motor and made an uproar
Sound, the second noise reduction cavity 38 be mainly used to reduce air intake gas because hit splitting ring surface and caused by noise.
In addition, on the basis of the present embodiment six, the first noise reduction cavity 37 and the second noise reduction cavity 38 can also be separated into
Multiple independent silencing cavities, each silencing cavity are corresponding with a noise reduction hole 34, thus can further improve noise reduction.
It the foregoing is only the preferred embodiment of the present invention, it is noted that for those of ordinary skills,
Under the premise of the principle of the present invention is not departed from, a variety of remodeling or improvement can be carried out to the present invention, such as, for interior shunting
The noise reduction hole of interior splitting ring, can also be opened on the outer wall of interior splitting ring by the auxiliary denoising device of circle and external shunt circle, and outside
The noise reduction hole of splitting ring is also opened on the outer wall of external shunt circle, or, the noise reduction hole of interior splitting ring is opened in the outer of interior splitting ring
On wall, and the noise reduction hole of external shunt circle is opened on the inwall of external shunt circle, in addition, the quantity of splitting ring can also be two with
On, these are regarded as within protection scope of the present invention.
Claims (10)
1. a kind of auxiliary denoising device for cooking-fume exhauster blower system, including blower fan (1), the impeller in the blower fan (1)
It is (2) internal that splitting ring (3) is installed, it is characterised in that：Described splitting ring (3) is to fix splitting ring, described splitting ring (3)
Include inwall (31) and outer wall (32), noise reduction cavity (33) has been internally formed in the splitting ring (3), in described inwall
(31) and/or on outer wall (32) it is provided with the noise reduction hole (34) being connected with the noise reduction cavity (33).
2. the auxiliary denoising device according to claim 1 for cooking-fume exhauster blower system, it is characterised in that：In described
Cavity between wall (31) and outer wall (32) forms described noise reduction cavity (33), is opened on described inwall (31) or outer wall (32)
There is described noise reduction hole (34).
3. the auxiliary denoising device according to claim 2 for cooking-fume exhauster blower system, it is characterised in that：The drop
The make an uproar inside of chamber (33) is divided into multiple independent silencing cavities (35), and each independent silencing cavity (35) is corresponding with least one
Described noise reduction hole (34).
4. the auxiliary denoising device according to claim 2 for cooking-fume exhauster blower system, it is characterised in that：Described
Splitting ring (3) at least two, the splitting ring (3) is along the axially arranged of impeller (2), shape between adjacent splitting ring (3)
Into there is air intake gap (4).
5. the auxiliary denoising device according to claim 4 for cooking-fume exhauster blower system, it is characterised in that：Described
Splitting ring (3) includes interior splitting ring (3a) and external shunt circle (3b), and the noise reduction hole of the interior splitting ring is opened in the interior of interior splitting ring
On wall, the noise reduction hole of the external shunt circle is opened on the inwall of external shunt circle.
6. the auxiliary denoising device according to claim 4 for cooking-fume exhauster blower system, it is characterised in that：Described
Splitting ring (3) includes interior splitting ring (3a) and external shunt circle (3b), and the noise reduction hole of the interior splitting ring is opened in the outer of interior splitting ring
On wall, the noise reduction hole of external shunt circle is opened on the outer wall of external shunt circle.
7. the auxiliary denoising device according to claim 4 for cooking-fume exhauster blower system, it is characterised in that：Described
Splitting ring (3) includes interior splitting ring (3a) and external shunt circle (3b), and the noise reduction hole of the interior splitting ring is opened in the interior of interior splitting ring
On wall, the noise reduction hole of external shunt circle is opened on the outer wall of external shunt circle.
8. the auxiliary denoising device according to claim 4 for cooking-fume exhauster blower system, it is characterised in that：In blower fan
(1) air inlet is provided with afflux circle (5), is interconnected and fixed between adjacent splitting ring (3) by head rod (61),
Outermost splitting ring (3) passes through on the fixed described afflux circle (5) of the second connecting rod (62).
9. the auxiliary denoising device according to claim 1 for cooking-fume exhauster blower system, it is characterised in that：Described point
The inside of stream circle (3) is provided with midfeather (36), and the first noise reduction cavity (37), institute are formed between the midfeather (36) and inwall (31)
State and the second noise reduction cavity (38) is formed between midfeather (36) and outer wall (32), be provided with the inwall (31) and the described first drop
The noise reduction hole (34) that chamber (37) of making an uproar is connected, the drop being connected with second noise reduction cavity (38) is provided with the outer wall (32)
Make an uproar hole (34).
10. the auxiliary denoising device according to claim 9 for cooking-fume exhauster blower system, it is characterised in that：It is described
The first noise reduction cavity (37) and the second noise reduction cavity (38) be divided into multiple independent silencing cavities, each silencing cavity be corresponding with to
Noise reduction hole (34) described in few one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710154243.4A CN107339263A (en) | 2017-03-15 | 2017-03-15 | A kind of auxiliary denoising device for cooking-fume exhauster blower system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710154243.4A CN107339263A (en) | 2017-03-15 | 2017-03-15 | A kind of auxiliary denoising device for cooking-fume exhauster blower system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107339263A true CN107339263A (en) | 2017-11-10 |
Family
ID=60222596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710154243.4A Pending CN107339263A (en) | 2017-03-15 | 2017-03-15 | A kind of auxiliary denoising device for cooking-fume exhauster blower system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107339263A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954437A (en) * | 2018-07-14 | 2018-12-07 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator with multi-layer helical curved surface noise filtering device |
| CN109058130A (en) * | 2018-08-03 | 2018-12-21 | 盛世瑶兰（深圳）科技有限公司 | A kind of exhaust fan reducing noise based on air flow |
| CN110439864A (en) * | 2018-05-04 | 2019-11-12 | 宁波方太厨具有限公司 | A kind of air inlet collector and the centrifugal blower with the collector |
| CN112024219A (en) * | 2020-09-04 | 2020-12-04 | 万载鹏威实业有限公司 | Gas leveling device for spraying production line |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080056882A1 (en) * | 2005-02-23 | 2008-03-06 | Clay David C | Compressor |
| CN203258832U (en) * | 2013-04-08 | 2013-10-30 | 南京天加空调设备有限公司 | Noiseless air conditioner |
| CN104047897A (en) * | 2013-03-15 | 2014-09-17 | 雷勃美国公司 | Centrifugal blower assembly and method for assembling the same |
| CN104180412A (en) * | 2014-08-09 | 2014-12-03 | 华帝股份有限公司 | Smoke absorbing and noise reducing device of range hood |
| CN104654398A (en) * | 2013-11-25 | 2015-05-27 | 西安立元智能科技有限公司 | Novel easy-cleaning and non-heat-absorption smoke ventilator arranged in ceiling or tilting manner |
| CN204648377U (en) * | 2015-04-03 | 2015-09-16 | 九阳股份有限公司 | A kind of lampblack absorber of high-efficiency condensation |
| CN204880627U (en) * | 2015-06-25 | 2015-12-16 | 珠海格力电器股份有限公司 | Water conservancy diversion circle subassembly, axial fan and air conditioner |
| CN105546613A (en) * | 2016-02-25 | 2016-05-04 | 宁波方太厨具有限公司 | Shunting device for extractor hood and cascaded fans applying shunting device |
| CN205760324U (en) * | 2016-05-25 | 2016-12-07 | 湖南九九矿安装备有限公司 | A kind of environmental protection wind spraying aid type spray for dust suppression machine with three grades of silencing means |
| CN206592348U (en) * | 2017-03-15 | 2017-10-27 | 宁波方太厨具有限公司 | A kind of auxiliary denoising device for cooking-fume exhauster blower system |
-
2017
- 2017-03-15 CN CN201710154243.4A patent/CN107339263A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080056882A1 (en) * | 2005-02-23 | 2008-03-06 | Clay David C | Compressor |
| CN104047897A (en) * | 2013-03-15 | 2014-09-17 | 雷勃美国公司 | Centrifugal blower assembly and method for assembling the same |
| CN203258832U (en) * | 2013-04-08 | 2013-10-30 | 南京天加空调设备有限公司 | Noiseless air conditioner |
| CN104654398A (en) * | 2013-11-25 | 2015-05-27 | 西安立元智能科技有限公司 | Novel easy-cleaning and non-heat-absorption smoke ventilator arranged in ceiling or tilting manner |
| CN104180412A (en) * | 2014-08-09 | 2014-12-03 | 华帝股份有限公司 | Smoke absorbing and noise reducing device of range hood |
| CN204648377U (en) * | 2015-04-03 | 2015-09-16 | 九阳股份有限公司 | A kind of lampblack absorber of high-efficiency condensation |
| CN204880627U (en) * | 2015-06-25 | 2015-12-16 | 珠海格力电器股份有限公司 | Water conservancy diversion circle subassembly, axial fan and air conditioner |
| CN105546613A (en) * | 2016-02-25 | 2016-05-04 | 宁波方太厨具有限公司 | Shunting device for extractor hood and cascaded fans applying shunting device |
| CN205760324U (en) * | 2016-05-25 | 2016-12-07 | 湖南九九矿安装备有限公司 | A kind of environmental protection wind spraying aid type spray for dust suppression machine with three grades of silencing means |
| CN206592348U (en) * | 2017-03-15 | 2017-10-27 | 宁波方太厨具有限公司 | A kind of auxiliary denoising device for cooking-fume exhauster blower system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439864A (en) * | 2018-05-04 | 2019-11-12 | 宁波方太厨具有限公司 | A kind of air inlet collector and the centrifugal blower with the collector |
| CN108954437A (en) * | 2018-07-14 | 2018-12-07 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator with multi-layer helical curved surface noise filtering device |
| CN109058130A (en) * | 2018-08-03 | 2018-12-21 | 盛世瑶兰（深圳）科技有限公司 | A kind of exhaust fan reducing noise based on air flow |
| CN112024219A (en) * | 2020-09-04 | 2020-12-04 | 万载鹏威实业有限公司 | Gas leveling device for spraying production line |
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Application publication date: 20171110 |