CN108240651A - A kind of noise reducing type outlet housing of range hood - Google Patents
A kind of noise reducing type outlet housing of range hood Download PDFInfo
- Publication number
- CN108240651A CN108240651A CN201711050192.7A CN201711050192A CN108240651A CN 108240651 A CN108240651 A CN 108240651A CN 201711050192 A CN201711050192 A CN 201711050192A CN 108240651 A CN108240651 A CN 108240651A
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- China
- Prior art keywords
- noise reduction
- noise
- range hood
- outlet housing
- inner cover
- Prior art date
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- 230000009467 reduction Effects 0.000 claims abstract description 101
- 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 15
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000008030 elimination Effects 0.000 abstract description 3
- 238000003379 elimination reaction Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000013475 authorization Methods 0.000 description 2
- 239000012530 fluid Substances 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
- 239000000243 solution Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000000779 smoke Substances 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
- F24C15/2078—Removing cooking fumes movable
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
A kind of noise reducing type outlet housing of range hood, the cover body including pedestal and on pedestal, it is characterised in that cover body includes inner cover and outer cover, and multiple noise reduction holes are provided on the peripheral wall of inner cover, and the multiple and corresponding noise reduction cavity in noise reduction hole is formed between inner cover and outer cover.The advantage of the invention is that：The noise reducing type outlet housing of the range hood is provided with multiple noise reduction holes on the peripheral wall of inner cover, the multiple and corresponding noise reduction cavity in noise reduction hole is formed between inner cover and outer cover, the air in air column and noise reduction cavity in noise reduction hole constitutes elastic resonator system, when the partial noise frequency of range hood is identical with the intrinsic frequency of this resonator system, air column in noise reduction hole occurs resonance 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, utilize Helmholz resonance noise-cancelling theory, its noise reduction sound-deadening effect is good, in addition, it can be according to the water conservancy diversion form of outlet housing, realize that the noise reduction of each position of outlet housing reaches best.
Description
Technical field
The present invention relates to a kind of outlet housing of range hood, more particularly, to a kind of noise reducing type outlet housing of range hood.
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 CN 101294725B)《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, and according to the water conservancy diversion form of outlet housing, cannot realize the noise reduction of each position of outlet housing.The for another example patent No.
For disclosed in the Chinese utility model patent of 201620102678.5 (Authorization Notice No. is CN 205536022U)《A kind of use
In the outlet housing of range hood》, the outlet housing include cover body bottom and cover body head, cover body bottom be air intake, cover body head
For outlet air end, multiple through-holes are provided on the peripheral wall on cover body head and make cover body head partly or wholly in mesh-structured.Though
So, which still, by injection, is mixed by reaching noise reduction to the injection of surrounding air, blending during wind turbine air draft
The mixed noise reduction reached is poor, and according to the water conservancy diversion form of outlet housing, cannot realize the noise reduction of each position of outlet housing.
In conclusion need to be further improved existing outlet air cover structure.
Invention content
First technical problem to be solved by this invention is present situation for the above-mentioned prior art, provides a kind of structure letter
The noise reducing type outlet housing of single, excellent noise reduction effect range hood.
Second technical problem to be solved by this invention is present situation for the above-mentioned prior art, and providing can be according to outlet housing
Water conservancy diversion form, realize the noise reducing type outlet housing of the range hood of the noise reduction of outlet housing each position.
Technical solution is used by the present invention solves above-mentioned first technical problem：The noise reducing type outlet air of the range hood
Cover, the cover body including pedestal and on pedestal, it is characterised in that：The cover body includes inner cover and outer cover, in the inner cover
Multiple noise reduction holes are provided on peripheral wall, the multiple and corresponding noise reduction cavity in noise reduction hole is formed between the inner cover and outer cover.
Preferably, the noise reduction cavity is corresponded with the noise reduction hole.
A kind of preferred embodiment, the noise reduction cavity are taken shape on the inner wall of the outer cover.
Another preferred embodiment, the noise reduction cavity are taken shape on the outer wall of the inner cover.
Further preferably, the noise reduction cavity is the annulus noise reduction cavity along horizontal EDS maps, on same level anchor ring
Noise reduction hole is arranged in same annulus noise reduction cavity.
Technical solution is used by the present invention solves above-mentioned second technical problem：The noise reducing type outlet air of the range hood
The inner cover of cover and the bore of outer cover become larger from bottom to top, also, the volume phase of the noise reduction cavity positioned at same level height
Deng the volume of the noise reduction cavity on same vertical direction becomes larger from bottom to top.
As a preferred embodiment, the noise reduction hole in a circumferential direction with decile equal on vertical direction.
As another preferred embodiment, the spacing between two neighboring noise reduction hole on same vertical direction by lower and
Upper gradually increase, correspondingly, the housing depth of the noise reduction cavity on same vertical direction becomes larger from bottom to top.
Further preferably, which has further included outlet air mouth circle, and the upper end of the inner cover is connected to the air outlet
On circle.
Inner cover and outer cover can be there are many mounting structures, it is preferable that form and seal in the bottom of the outlet air mouth circle
Ring forms lower sealing ring on the pedestal, is sealedly connected at the top of the inner cover on the upper sealing ring, described interior
The sealed bottom of cover is connected on the lower sealing ring, and the top of the outer cover is fastened on by screw in the outlet air mouth circle,
The bottom of the outer cover is fastened on by screw on the pedestal.
Compared with prior art, the advantage of the invention is that：The cover body of the noise reducing type outlet housing of the range hood includes interior
Cover and outer cover, are provided with multiple noise reduction holes, and be formed between inner cover and outer cover multiple opposite with noise reduction hole on the peripheral wall of inner cover
The noise reduction cavity answered, the air in air column and noise reduction cavity in noise reduction hole constitutes elastic resonator system, when the portion of range hood
When dividing frequency noise identical with the intrinsic frequency of this resonator system, the air column in noise reduction hole occurs resonance and occurs with hole wall
Severe friction, friction makes acoustic energy be converted into thermal energy, so as to achieve the purpose that noise elimination, i.e., using Helmholz resonance noise-cancelling theory,
Its noise reduction sound-deadening effect is good, furthermore, it is possible to according to the water conservancy diversion form of outlet housing, realizes that the noise reduction of each position of outlet housing reaches
To best.
Description of the drawings
Fig. 1 is the structure diagram of the embodiment of the present invention one
Fig. 2 is the perspective exploded view of the embodiment of the present invention one；
Fig. 3 is the noise reduction hole of the embodiment of the present invention one and the structure diagram of noise reduction cavity；
Fig. 4 is the noise reduction hole of the embodiment of the present invention one and the structure diagram of noise reduction cavity；
Fig. 5 is the structure sectional view of the embodiment of the present invention one；
Fig. 6 is the structure diagram of the inner cover of the embodiment of the present invention two；
Fig. 7 is the cover structure schematic diagram of the embodiment of the present invention three；
Fig. 8 is the structure diagram of the inner cover of the embodiment of the present invention three.
Specific embodiment
The present invention is described in further detail below in conjunction with attached drawing embodiment.
Embodiment one：
As shown in Figures 1 to 5, the noise reducing type outlet housing of the range hood in the present embodiment includes pedestal 1, inner cover 2, outer cover
3rd, the primary clusterings such as outlet air mouth circle 4.Upper sealing ring 41 is formed in the bottom of outlet air mouth circle 4, lower sealing is formed on pedestal 1
Ring 11, the top of inner cover 2 are sealedly connected on upper sealing ring 41, and the sealed bottom of inner cover 2 is connected on lower sealing ring 11, outer cover 3
Top be fastened in outlet air mouth circle 4 by screw 6, the bottom of outer cover 3 is fastened on by screw 6 on pedestal 1.
In the present embodiment, multiple noise reduction holes 21 are provided on the peripheral wall of inner cover 2, noise reduction hole 21 is circular hole, inner cover 2 and outer cover
Multiple and 21 corresponding noise reduction cavity 5 of noise reduction hole is formed between 3.In the present embodiment, number and the noise reduction hole 21 of noise reduction cavity 5
Number is identical, also, noise reduction cavity 5 is corresponded with noise reduction hole 21, so as to form multiple Helmholz resonance chambers.
In the present embodiment, the bore of inner cover 2 and outer cover 3 becomes larger from bottom to top, also, noise reduction cavity 5 takes shape in outside
On the inner wall of cover 3, the volume positioned at the noise reduction cavity 5 of same level height is equal, the noise reduction cavity 5 on same vertical direction
Volume becomes larger from bottom to top.Also, the spacing between the two neighboring noise reduction hole 21 on same vertical direction is under
And upper gradual increase, correspondingly, the housing depth H of the noise reduction cavity 5 on same vertical direction becomes larger from bottom to top.
As shown in figure 5, a diameter of D2 of 2 upper port of inner cover, a diameter of D1 of 2 lower port of inner cover, and D2>D1.Work as fluid
When at A, B, C tri-, according to fluid continuity principle Q=VS, speed VA>VB>VC, that is, noise frequency peak value fA>fB>
fC, it is each independent according to Helmholz resonance principle since the volume of noise reduction cavity 5 becomes larger from bottom to top in the present embodiment
The resonant frequency of resonant cavity isC is the velocity of sound, and S is corresponding noise reduction hole area, and V is noise reduction cavity volume, and L is noise reduction
The effective neck length in hole.It follows that as 5 volume of noise reduction cavity becomes larger, resonant frequency f reduces, to match corresponding place plane
Wind make an uproar.
The present invention principle of noise reduction be：Using Helmholz resonance noise reduction principle, air column and noise reduction in noise reduction hole 21
Air in chamber 5 constitutes elastic resonator system, when the partial noise frequency of range hood and the intrinsic frequency of this resonator system
When identical, the air column in noise reduction hole 21 occurs resonance and severe friction occurs with hole wall, and friction makes acoustic energy be converted into thermal energy,
So as to achieve the purpose that noise elimination.And it is possible to according to the water conservancy diversion form of outlet housing, the noise reduction of each position of outlet housing is realized
Reach best.
Embodiment two：
As shown in fig. 6, the noise reduction cavity 5 of the outlet housing of the present embodiment is taken shape on the outer wall of inner cover 2, and similarly, a drop
Chamber 5 of making an uproar corresponds to a noise reduction hole 21, and principle of noise reduction is identical with embodiment one, is not unfolded to describe herein.
Embodiment three：
The noise reduction cavity 5 of the present embodiment is the annulus noise reduction cavity along horizontal EDS maps, the noise reduction on same level anchor ring
Hole 21 is arranged in same annulus noise reduction cavity.
As shown in fig. 7, annulus noise reduction cavity is set on the inner wall of outer cover 3, as shown in figure 8, annulus noise reduction cavity is set on inner cover 2
On outer wall.In Fig. 7 and two kinds of structures shown in Fig. 8, it is that multiple noise reduction holes 21 correspond to a noise reduction cavity 5, forms parallel resonance
Chamber, principle of noise reduction is identical with embodiment one, is not unfolded to describe herein.
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, for example, noise reduction hole can also be
With equal decile on vertical direction on circumferencial direction, for another example, noise reduction hole can also use other shapes other than using circular hole
Hole, these are regarded as within protection scope of the present invention.
Claims (10)
1. a kind of noise reducing type outlet housing of range hood, including pedestal (1) and the cover body on pedestal, it is characterised in that：Institute
It states cover body and includes inner cover (2) and outer cover (3), multiple noise reduction holes (21), the inner cover are provided on the peripheral wall of the inner cover (2)
(2) the multiple and corresponding noise reduction cavity of the noise reduction hole (21) (5) is formed between outer cover (3).
2. the noise reducing type outlet housing of range hood according to claim 1, it is characterised in that：The noise reduction cavity (5) and institute
State noise reduction hole (21) one-to-one correspondence.
3. the noise reducing type outlet housing of range hood according to claim 2, it is characterised in that：The noise reduction cavity (5) into
Type is on the inner wall of the outer cover (3).
4. the noise reducing type outlet housing of range hood according to claim 2, it is characterised in that：The noise reduction cavity (5) into
Type is on the outer wall of the inner cover (2).
5. the noise reducing type outlet housing of range hood according to claim 1, it is characterised in that：The noise reduction cavity (5) is edge
The annulus noise reduction cavity of dampening plane distribution, the noise reduction hole (21) on same level anchor ring are arranged at same annulus noise reduction cavity
It is interior.
6. the noise reducing type outlet housing of the range hood according to any claim in claim 1 to 5, it is characterised in that：
The bore of the inner cover (2) and outer cover (3) becomes larger from bottom to top, also, positioned at the noise reduction cavity (5) of same level height
Volume it is equal, the volume of the noise reduction cavity (5) on same vertical direction becomes larger from bottom to top.
7. the noise reducing type outlet housing of range hood according to claim 6, it is characterised in that：The noise reduction hole (21) is in circle
In circumferential direction and vertical direction on equal decile.
8. the noise reducing type outlet housing of range hood according to claim 6, it is characterised in that：On same vertical direction
Two neighboring noise reduction hole (21) between spacing from bottom to top gradually increase, correspondingly, the drop on same vertical direction
The housing depth of chamber (5) of making an uproar becomes larger from bottom to top.
9. the noise reducing type outlet housing of range hood according to claim 1, it is characterised in that：Outlet air mouth circle is further included
(4), the upper end of the inner cover (2) is connected in the outlet air mouth circle (4).
10. the noise reducing type outlet housing of range hood according to claim 9, it is characterised in that：In the outlet air mouth circle (4)
Bottom form upper sealing ring (41), lower sealing ring (11), the top of the inner cover (2) are formed on the pedestal (1)
It being sealedly connected on the upper sealing ring (41), the sealed bottom of the inner cover (2) is connected on the lower sealing ring (11),
The top of the outer cover (3) is fastened on by screw (6) on the outlet air mouth circle (4), and the bottom of the outer cover (3) passes through screw
(6) it is fastened on the pedestal (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711050192.7A CN108240651A (en) | 2017-10-31 | 2017-10-31 | A kind of noise reducing type outlet housing of range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711050192.7A CN108240651A (en) | 2017-10-31 | 2017-10-31 | A kind of noise reducing type outlet housing of range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108240651A true CN108240651A (en) | 2018-07-03 |
Family
ID=62700874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711050192.7A Withdrawn CN108240651A (en) | 2017-10-31 | 2017-10-31 | A kind of noise reducing type outlet housing of range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108240651A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109109618A (en) * | 2018-09-21 | 2019-01-01 | 珠海格力电器股份有限公司 | Mute air outlet structure and air conditioner |
| CN109827214A (en) * | 2019-02-20 | 2019-05-31 | 宁波方太厨具有限公司 | A kind of noise reducing type range hood |
| CN110375351A (en) * | 2019-06-27 | 2019-10-25 | 宁波方太厨具有限公司 | A kind of smoke exhaust pipe suitable for range hood |
-
2017
- 2017-10-31 CN CN201711050192.7A patent/CN108240651A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109109618A (en) * | 2018-09-21 | 2019-01-01 | 珠海格力电器股份有限公司 | Mute air outlet structure and air conditioner |
| CN109109618B (en) * | 2018-09-21 | 2024-07-19 | 珠海格力电器股份有限公司 | Mute air outlet structure and air conditioner |
| CN109827214A (en) * | 2019-02-20 | 2019-05-31 | 宁波方太厨具有限公司 | A kind of noise reducing type range hood |
| CN109827214B (en) * | 2019-02-20 | 2024-01-16 | 宁波方太厨具有限公司 | Noise-reducing type range hood |
| CN110375351A (en) * | 2019-06-27 | 2019-10-25 | 宁波方太厨具有限公司 | A kind of smoke exhaust pipe suitable for range hood |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180703 |