CN108240648A - A kind of frequency conversion noise reduction outlet housing of range hood - Google Patents
A kind of frequency conversion noise reduction outlet housing of range hood Download PDFInfo
- Publication number
- CN108240648A CN108240648A CN201711045974.1A CN201711045974A CN108240648A CN 108240648 A CN108240648 A CN 108240648A CN 201711045974 A CN201711045974 A CN 201711045974A CN 108240648 A CN108240648 A CN 108240648A
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- Prior art keywords
- noise reduction
- baffle
- cover
- range hood
- frequency conversion
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- 230000009467 reduction Effects 0.000 title claims abstract description 76
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 21
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000009471 action Effects 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 230000004888 barrier function Effects 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 4
- 238000003032 molecular docking Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000003044 adaptive effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000013475 authorization Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 210000000952 spleen Anatomy 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)
- Air-Flow Control Members (AREA)
- Ventilation (AREA)
Abstract
A kind of frequency conversion noise reduction outlet housing of range hood, including pedestal, inner cover and outer cover, noise reduction hole is provided on inner cover peripheral wall, circumferentially setting and the first barrier being spaced apart up and down are equipped on interior cover outer wall, the second baffle being spaced apart up and down is equipped on outer cover inner wall, second baffle is mutually spaced apart up and down with the first baffle, it is formed and the corresponding noise reduction cavity in noise reduction hole between adjacent the first baffle and the second baffle, one of them in outer cover and inner cover is covered to be fixed, another is movable guard, the elastic component that movable guard is made to maintain the trend of moving downward is installed on movable guard, movable guard can move up and down to adjust the spacing between the first baffle and the second baffle under the action of range hood exit flow and elastic component.The noise reduction outlet air outlet housing can be moved up and down in the cooperation of air outlet air-flow and elastic component to adjust the spacing between the first baffle and the second baffle, so as to fulfill the adaptive stepless frequency conversion noise reduction of outlet housing.
Description
Technical field
The present invention relates to a kind of outlet housing of range hood, more particularly, to a kind of frequency conversion noise reduction outlet air of range hood
Cover.
Background technology
The Chinese way of cooking can generate a large amount of oil smoke, and to keep the health of kitchen environment cleaning and human body, range hood has become
For one of essential equipment in Modern Family kitchen.Range hood sucks gas in its air inlet in the process of running, via
Fan outlet discharges gas.Existing range hood is generally fitted with outlet housing in fan outlet, and outlet housing has
The effect of gather qi together water conservancy diversion, connection range hood and discharge pipe.The air-flow that wind turbine generates finally is required for converging in outlet housing, this
The air-flow in outlet housing is just made excessively to concentrate, the air motion in cover body generates turbulent flow and makes a noise, and then influences people's
Culinary art experience and health.
In order to reduce the noise generated when air-flow flows through outlet housing, people improve the structure of outlet housing.As specially
Profit number is disclosed in the Chinese invention patent of 200810061936.X (Authorization Notice No. is 101294725 B of CN)《With having
The ventilator air outlet cover of source decrease of noise functions》, the outlet housing include cover body, cover body tool there are one air outlet and with spiral case outlet air end
The air inlet of mouth connection, the peripheral wall of cover body is shiny surface, and peripheral wall has upwardly extended volute tongue by air inlet.Although the outlet housing leads to
It crosses after cover body peripheral wall designs volute tongue, the spiral case being connect with outlet housing outlet air port can be made without in addition designing volute tongue, structure
Simplify, and the active noise reduction function of outlet housing is realized using volute tongue, still, which passes through volute tongue noise reduction, noise reduction
Effect is general.The for another example Chinese utility model of Patent No. 201620102678.5 (Authorization Notice No. is 205536022 U of CN)
Disclosed in patent《A kind of outlet housing for range hood》, the outlet housing include cover body bottom and cover body head, cover body bottom
Portion is air intake, and cover body head is outlet air end, and multiple through-holes are provided on the peripheral wall on cover body head and make cover body head in part
It is or whole in mesh-structured.Although the outlet housing is by imitating the injection of surrounding air, blending to reach noise reduction during wind turbine air draft
Fruit, still, the noise reduction reached by injection, blending are poor.In addition, the gear change of range hood can make wind make an uproar frequency
Variation, and existing noise reduction measure cannot accordingly be adjusted according to wind turbine gear change, it can not be according to wind turbine gear difference
Carry out adaptive step-less adjustment, noise reduction not smart enoughization, user experience is poor.In conclusion need to existing outlet air
Cover structure is further improved.
Invention content
The technical problems to be solved by the invention are present situations for the above-mentioned prior art, provide it is a kind of can be according to wind turbine gear
Size carries out noise reduction cavity resonant frequency the frequency conversion noise reduction outlet housing of the range hood of adaptive step-less adjustment.
Technical solution is used by the present invention solves above-mentioned technical problem：The frequency conversion noise reduction outlet housing of the range hood,
Cover body including pedestal and on pedestal, it is characterised in that：The cover body includes inner cover and outer cover, in the peripheral wall of the inner cover
On be provided with noise reduction hole, circumferentially setting and up and down the first barrier for being spaced apart are equipped on the outer wall of the inner cover, in institute
The inner wall for stating outer cover is equipped with the second baffle for circumferentially setting and being spaced apart up and down, second baffle and the first baffle
Mutually it is spaced apart up and down, it is interior between the first adjacent baffle, the second baffle and the first adjacent baffle, second baffle
Cover outer wall, outer cover inner wall enclose noise reduction cavity jointly, and the noise reduction hole is corresponding with the noise reduction cavity, the outer cover and inner cover
In one of them covered to be fixed, another is movable guard, and being equipped on movable guard, which maintains movable guard, moves downward
The elastic component of gesture, the movable guard can be relatively fixed cover under the action of range hood exit flow and move up, and export
It can move up and down to adjust the spacing between first baffle and the second baffle under the action of air-flow and elastic component.
As a preferred embodiment, the inner cover is covered to be fixed, and the outer cover is movable guard.It is of course also possible to it adopts
It is movable guard with inner cover, outer cover is the structure of fixed cover.
Preferably, which has further included outlet air mouth circle, and the bottom of the inner cover is fixed on pedestal, the top of inner cover
Be fixed in outlet air mouth circle, on the lateral wall of the outer cover be equipped with guide holder, on the guide holder activity be equipped with vertically
The guide rod of setting, guide rod are supported between outlet air mouth circle and pedestal, and the elastic component is the bullet being arranged on the guide bar
Spring, the spring are supported and are located between outlet air mouth circle and the upper surface of guide holder.
For the ease of installation, the outer cover includes the first case and the second case of split docking, in first case
With the guide holder is mounted on the lateral wall of the second case.Also, it is respectively provided with and leads on the first case and the second case
To seat, moving up and down for outer cover can be made more steady.
In order to make to cover under the action of range hood exit flow and can move up outside, it is equipped at the top of the outer cover
Relocation mechanism, range hood exit flow drive outer cover to move up by the relocation mechanism.
Relocation mechanism can be there are many structure, it is preferable that the relocation mechanism includes the gentle kickboard of connecting rod, the connecting rod
It is fixed on the outer cover across at the both ends at the top of the inner cover, connecting rod, the air supporting plate is mounted on the middle part of connecting rod.
In order to which exit flow is made more uniformly to act on air supporting plate, the air supporting plate level setting, the vertical throwing of air supporting plate
Shadow falls into the central area of the inner cover.
In order to obtain better noise reduction, first baffle and the second baffle are horizontally disposed.
In order to obtain better noise reduction, the noise reduction hole is arranged in columns along the axial direction of inner cover, belongs to the drop of same row
Hole of making an uproar is uniformly distributed, also, each column noise reduction hole is uniformly distributed in the circumferentially-spaced of inner cover in the axially spaced-apart of inner cover, accordingly,
First baffle and the second baffle are spaced and are uniformly distributed.
As the preferred of any of the above-described scheme, the inner cover and the uniform cylindrical structure of outer cover.
Compared with prior art, the advantage of the invention is that：In the inner cover and outer cover of the self-adapting frequency conversion noise reduction outlet housing
There are one be it is fixed cover, another is movable guard, under air outlet for kitchen ventilator airflow function movable guard can be relatively fixed cover to
Upper movement, and can be moved up and down by the cooperation of the elastic component being mounted on movable guard with adjust the first baffle and the second baffle it
Between spacing, so as to which noise reduction hole be made to correspond to the noise reduction cavity of respective volume under the working condition of range hood different stalls, and drop
The volume of chamber of making an uproar can carry out step-less adjustment, according to Helmholz resonance principle, can make resonant frequency and the oil suction of noise reduction cavity
The wind that the different stalls of smoke machine generate frequency of making an uproar is identical or match, and is dropped so as to fulfill the adaptive stepless frequency conversion of outlet housing
It makes an uproar.
Description of the drawings
Fig. 1 is the structure diagram of the embodiment of the present invention
Fig. 2 is the perspective exploded view of the embodiment of the present invention；
Fig. 3 is the side view of the embodiment of the present invention；
Fig. 4 is structure sectional view of the embodiment of the present invention when range hood low-grade location is run；
Fig. 5 is the enlarged diagram of part A in Fig. 4；
Fig. 6 is structure sectional view of the embodiment of the present invention when range hood high tap position is run；
Fig. 7 is the enlarged diagram of part B in Fig. 6.
Specific embodiment
The present invention is described in further detail below in conjunction with attached drawing embodiment.
As shown in Figure 1 to Figure 3, the frequency conversion noise reduction outlet housing of the range hood in the present embodiment includes pedestal 1, inner cover 2, outer
Cover 3 and 4 grade primary clusterings of outlet air mouth circle.
Wherein, inner cover 2 is covered to be fixed, and the bottom of inner cover 2 is fixed on pedestal 1, and the top of inner cover 2 is fixed on outlet air mouth circle
On 4.Inner cover 2 is in cylindrical structure, noise reduction hole 21 is provided on the peripheral wall of inner cover 2, noise reduction hole 21 is lined up along the axial direction of inner cover 2
Row, the noise reduction hole 21 for belonging to same row is uniformly distributed in the axially spaced-apart of inner cover 2, also, each column noise reduction hole 21 is in the week of inner cover 2
It is uniformly distributed to interval.Circumferentially setting is equipped on the outer wall of inner cover 2 and between the upper and lower every equally distributed first barrier 22,
First baffle 22 is horizontally disposed.
Outer cover 3 is in cylindrical structure, and the second baffle 31 circumferentially set, the second baffle are equipped on the inner wall of outer cover 3
31 horizontal distributions and between the upper and lower every being uniformly distributed.Second baffle 31 is mutually spaced apart up and down with the first baffle 22, and adjacent the
2 outer wall of inner cover, 3 inner wall of outer cover between one baffle 22, the second baffle 31 and the first adjacent baffle, second baffle is common
Enclose noise reduction cavity 5.Noise reduction hole 31 on inner cover 2 is corresponding with noise reduction cavity 5, also, corresponds to together with the noise reduction hole 21 of a line
One noise reduction cavity 5.
Outer cover 3 is movable guard, and the opposite inner cover 2 of 3 energy of outer cover moves up and down.It is equipped with and is oriented on the lateral wall of outer cover 3
Seat 6, movable on guide holder 6 to be equipped with vertically arranged guide rod 7, guide rod 7 is supported between outlet air mouth circle 4 and pedestal 1,
Spring 8 is arranged on guide rod 7,8 elasticity of spring, which is supported, to be located between the upper surface of outlet air mouth circle 4 and guide holder 6, outer so as to make
Cover 3 maintains the trend moved downward.Conventional mechanical spring may be used in spring 8, can also use gas spring and minute-pressure spring
Deng other springs.In the present embodiment, for the ease of installation, outer cover 3 includes the first case 3a and the second case 3b of split docking,
Guide holder 6 is mounted on the lateral wall of the first case 3a and the second case 3b.
In addition, being equipped with relocation mechanism 9 at 3 top of outer cover, range hood exit flow drives outer cover by relocation mechanism 3
3 move up.In the present embodiment, relocation mechanism 9 includes 91 gentle kickboard 92 of connecting rod, and connecting rod 91 is across in the top of inner cover 2, company
The both ends of bar 91 are fixed on outer cover 3, and air supporting plate 92 is mounted on the middle part of connecting rod 91.In order to make 92 stress of air supporting plate more equal
Even, air supporting plate 92 is horizontally disposed, and the vertical projection of air supporting plate 92 is fallen into the central area of inner cover.
The operation principle of the adaptive stepless frequency conversion noise reduction outlet housing is as follows：
Spring 8 is downward to the active force of outer cover 3, and exit flow is upward to the active force of outer cover 3, and outer cover 3 can work off one's feeling vent one's spleen
It is moved up and down under the action of stream and spring 8 to adjust the spacing between the first baffle 22 and the second baffle 31, and then changes noise reduction
The volume size of chamber 5 makes noise reduction hole 21 correspond to the noise reduction cavity 5 of respective volume under the working condition of range hood different stalls.
As shown in Figure 4 and Figure 5, when range hood is in low-grade location, gas flow is smaller, and exit flow is to outer cover 3
Active force is smaller, outer cover 3 under the action of exit flow and spring 8 in lower position, at this point, the first baffle 22 and second every
31 spacing of shelves are larger, and 5 volume of noise reduction cavity corresponding to noise reduction hole 21 is larger.
As shown in Figure 6 and Figure 7, when range hood is in high tap position, gas flow is larger, and exit flow is to outer cover 3
Active force is larger, outer cover 3 under the action of exit flow and spring 8 in higher position, at this point, the first baffle 22 and second every
31 spacing of shelves are larger, and 21 corresponding 5 volume of noise reduction cavity of noise reduction hole is larger.
According to Helmholz resonance principle, the resonant frequency of each independent noise reduction cavity 5 isC is the velocity of sound, S
For corresponding 21 area of noise reduction hole, V is noise reduction cavity volume, and L is 21 effective neck length of noise reduction hole.It is it follows that constant in other parameters
In the case of, 5 volume of noise reduction cavity becomes larger, and resonant frequency f reduces, conversely, 5 volume of noise reduction cavity becomes smaller, resonant frequency f becomes larger.Profit
With Helmholz resonance noise reduction principle, the air column in noise reduction hole 21 constitutes elastic resonator system with the air in noise reduction cavity 5,
When the partial noise frequency of range hood is identical with the intrinsic frequency of this resonator system, the air column in noise reduction hole 21 occurs
It resonates and severe friction occurs with hole wall, friction makes acoustic energy be converted into thermal energy, so as to achieve the purpose that noise elimination.
The foregoing is merely 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, these are regarded as the present invention
Protection domain within.
Claims (10)
1. a kind of frequency conversion noise reduction outlet housing of range hood, the cover body including pedestal (1) and on pedestal (1), feature exist
In：The cover body includes inner cover (2) and outer cover (3), noise reduction hole (21) is provided on the peripheral wall of the inner cover (2), described interior
The outer wall of cover (2) is equipped with circumferentially setting and the first barrier (22) being spaced apart up and down, the inner wall in the outer cover (3)
It is equipped with circumferentially setting and the second baffle (31) being spaced apart up and down, second baffle (31) and the first baffle (22)
It is mutually spaced apart up and down, adjacent the first baffle (22), the second baffle (31) and the first adjacent baffle, second baffle
Between inner cover (2) outer wall, outer cover (3) inner wall enclose noise reduction cavity (5) jointly, the noise reduction hole (21) and the noise reduction cavity
(5) corresponding, one of them in the outer cover (3) and inner cover (2) is covered to be fixed, another is movable guard, on movable guard
The elastic component that movable guard is made to maintain the trend of moving downward is installed, the movable guard can be in the effect of range hood exit flow
Under be relatively fixed cover and move up, and can move up and down under the action of exit flow and elastic component to adjust first baffle
(22) spacing between the second baffle (31).
2. the frequency conversion noise reduction outlet housing of range hood according to claim 1, it is characterised in that：The inner cover (2) is
Fixed cover, the outer cover (3) are movable guard.
3. the frequency conversion noise reduction outlet housing of range hood according to claim 2, it is characterised in that：Outlet air mouth circle is further included
(4), the bottom of the inner cover (2) is fixed on pedestal (1), is fixed at the top of inner cover (2) in outlet air mouth circle (4), described
The lateral wall of outer cover (3) is equipped with guide holder (6), movable on the guide holder (6) to be equipped with vertically arranged guide rod
(7), guide rod (7) is supported between outlet air mouth circle (4) and pedestal (1), and the elastic component is the bullet being arranged on the guide bar
Spring (8), spring (8) elasticity, which is supported, to be located between the upper surface of outlet air mouth circle (4) and guide holder (6).
4. the frequency conversion noise reduction outlet housing of range hood according to claim 3, it is characterised in that：The outer cover (3) includes
The first case (3a) and the second case (3b) of split docking, in first case (3a) and the lateral wall of the second case (3b)
On be mounted on the guide holder (6).
5. the frequency conversion noise reduction outlet housing of range hood according to claim 2, it is characterised in that：In the outer cover (3)
Top is equipped with relocation mechanism (9), and range hood exit flow drives outer cover (3) to move up by the relocation mechanism (9).
6. the frequency conversion noise reduction outlet housing of range hood according to claim 5, it is characterised in that：The relocation mechanism
(9) including connecting rod (91) gentle kickboard (92), the connecting rod (91) is across at the top of the inner cover (2), and the two of connecting rod (91)
End is fixed on the outer cover (3), and the air supporting plate (92) is mounted on the middle part of connecting rod (91).
7. the frequency conversion noise reduction outlet housing of range hood according to claim 6, it is characterised in that：Air supporting plate (92) water
Flat setting, the vertical projection of air supporting plate (92) fall into the central area of the inner cover (2).
8. the frequency conversion noise reduction outlet housing of range hood according to claim 1, it is characterised in that：First baffle (22)
It is horizontally disposed with the second baffle (31).
9. the frequency conversion noise reduction outlet housing of range hood according to claim 1, it is characterised in that：Noise reduction hole (21) edge
The axial direction for inner cover (2) is arranged in columns, and the noise reduction hole (21) for belonging to same row is uniformly distributed in the axially spaced-apart of inner cover (2), also,
Each column noise reduction hole (21) inner cover (2) circumferentially-spaced being uniformly distributed, accordingly, first baffle (22) and the second baffle
(31) interval is uniformly distributed.
10. the frequency conversion noise reduction outlet housing of the range hood according to any claim in claim 1 to 9, feature exist
In：The inner cover (2) and outer cover (3) uniform cylindrical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711045974.1A CN108240648B (en) | 2017-10-31 | 2017-10-31 | Variable-frequency noise-reduction air outlet cover of range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711045974.1A CN108240648B (en) | 2017-10-31 | 2017-10-31 | Variable-frequency noise-reduction air outlet cover of range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108240648A true CN108240648A (en) | 2018-07-03 |
| CN108240648B CN108240648B (en) | 2023-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711045974.1A Active CN108240648B (en) | 2017-10-31 | 2017-10-31 | Variable-frequency noise-reduction air outlet cover of range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108240648B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005282982A (en) * | 2004-03-30 | 2005-10-13 | Matsushita Electric Ind Co Ltd | Range hood |
| US20060278216A1 (en) * | 2005-06-08 | 2006-12-14 | Gagas John M | Range hood |
| CN102042628A (en) * | 2011-01-10 | 2011-05-04 | 宁波方太厨具有限公司 | Range hood with flow-stabilizing and noise-reducing structure |
| EP2754967A1 (en) * | 2013-01-11 | 2014-07-16 | Miele & Cie. KG | Extractor hood |
| CN203940491U (en) * | 2014-05-14 | 2014-11-12 | 浙江帅康电气股份有限公司 | A kind of improved lampblack absorber outlet housing and use the lampblack absorber of this outlet housing |
| CN104566575A (en) * | 2013-10-23 | 2015-04-29 | 博西华电器（江苏）有限公司 | Extractor hood |
| CN104879811A (en) * | 2010-07-30 | 2015-09-02 | 博西华电器（江苏）有限公司 | Range hood |
| CN105423446A (en) * | 2015-12-25 | 2016-03-23 | 广东美的制冷设备有限公司 | Air conditioner noise-reduction assembly, compressor assembly, outdoor unit and air conditioner |
| CN105509119A (en) * | 2016-02-18 | 2016-04-20 | 广东美的厨房电器制造有限公司 | Noise reduction device and extractor hood |
| CN105546608A (en) * | 2016-02-01 | 2016-05-04 | 宁波方太厨具有限公司 | Outlet housing for range hood |
| CN205383669U (en) * | 2016-02-18 | 2016-07-13 | 广东美的厨房电器制造有限公司 | Make an uproar device and range hood fall |
| CN205536022U (en) * | 2016-02-01 | 2016-08-31 | 宁波方太厨具有限公司 | Air -out cover for cooker hood |
| CN106568109A (en) * | 2016-11-11 | 2017-04-19 | 宁波方太厨具有限公司 | Noise reducing impeller and range hood applying impeller |
| CN206330187U (en) * | 2016-12-29 | 2017-07-14 | 宁波方太厨具有限公司 | A kind of single air-inlet range hood |
| CN206592345U (en) * | 2017-03-15 | 2017-10-27 | 宁波方太厨具有限公司 | A kind of auxiliary denoising device of cooking-fume exhauster blower system |
-
2017
- 2017-10-31 CN CN201711045974.1A patent/CN108240648B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005282982A (en) * | 2004-03-30 | 2005-10-13 | Matsushita Electric Ind Co Ltd | Range hood |
| US20060278216A1 (en) * | 2005-06-08 | 2006-12-14 | Gagas John M | Range hood |
| CN104879811A (en) * | 2010-07-30 | 2015-09-02 | 博西华电器（江苏）有限公司 | Range hood |
| CN102042628A (en) * | 2011-01-10 | 2011-05-04 | 宁波方太厨具有限公司 | Range hood with flow-stabilizing and noise-reducing structure |
| EP2754967A1 (en) * | 2013-01-11 | 2014-07-16 | Miele & Cie. KG | Extractor hood |
| CN104566575A (en) * | 2013-10-23 | 2015-04-29 | 博西华电器（江苏）有限公司 | Extractor hood |
| CN203940491U (en) * | 2014-05-14 | 2014-11-12 | 浙江帅康电气股份有限公司 | A kind of improved lampblack absorber outlet housing and use the lampblack absorber of this outlet housing |
| CN105423446A (en) * | 2015-12-25 | 2016-03-23 | 广东美的制冷设备有限公司 | Air conditioner noise-reduction assembly, compressor assembly, outdoor unit and air conditioner |
| CN105546608A (en) * | 2016-02-01 | 2016-05-04 | 宁波方太厨具有限公司 | Outlet housing for range hood |
| CN205536022U (en) * | 2016-02-01 | 2016-08-31 | 宁波方太厨具有限公司 | Air -out cover for cooker hood |
| CN105509119A (en) * | 2016-02-18 | 2016-04-20 | 广东美的厨房电器制造有限公司 | Noise reduction device and extractor hood |
| CN205383669U (en) * | 2016-02-18 | 2016-07-13 | 广东美的厨房电器制造有限公司 | Make an uproar device and range hood fall |
| CN106568109A (en) * | 2016-11-11 | 2017-04-19 | 宁波方太厨具有限公司 | Noise reducing impeller and range hood applying impeller |
| CN206330187U (en) * | 2016-12-29 | 2017-07-14 | 宁波方太厨具有限公司 | A kind of single air-inlet range hood |
| CN206592345U (en) * | 2017-03-15 | 2017-10-27 | 宁波方太厨具有限公司 | A kind of auxiliary denoising device of cooking-fume exhauster blower system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108240648B (en) | 2023-11-17 |
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