CN105546608A - Outlet housing for range hood - Google Patents
Outlet housing for range hood Download PDFInfo
- Publication number
- CN105546608A CN105546608A CN201610071520.0A CN201610071520A CN105546608A CN 105546608 A CN105546608 A CN 105546608A CN 201610071520 A CN201610071520 A CN 201610071520A CN 105546608 A CN105546608 A CN 105546608A
- Authority
- CN
- China
- Prior art keywords
- outlet
- range hood
- cover body
- outlet housing
- body head
- 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
- 230000009467 reduction Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000001228 spectrum 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)
- Ventilation (AREA)
- Air-Flow Control Members (AREA)
Abstract
The invention discloses an outlet housing for a range hood. The outlet housing comprises a housing body bottom and a housing body head, wherein the housing body bottom is an inlet end and the housing body head is an outlet end. The outlet housing is characterized in that the edge of an air outlet of the housing body head is of a saw-tooth structure. Compared with the prior art, the outlet housing for the range hood has the advantages that the edge of the air outlet of the housing body head forms the saw-tooth structure, and during work, with existence of the saw-tooth structure, certain vortexes are produced, strong shear force is formed at tips of teeth and the vortexes are induced to enter a shearing layer, so that the mixing area is enlarged, characteristics of a flow field are changed, exchange with energy and momentum in an ambient environment is strengthened, and a better noise reduction effect is achieved; moreover, analysis on a noise spectrogram of the range hood shows that the outlet housing of the saw-tooth structure have a certain noise reduction capability in whole frequency bands.
Description
Technical field
The present invention relates to a kind of outlet housing used for range hood.
Background technology
At present, generally all outlet housing is installed at the air outlet of range hood, existing outlet housing generally all includes bottom cover body and cover body head, be arranged on bottom cover body on the fan outlet of range hood, namely be air intake bottom cover body, cover body head is outlet air end, and the air-flow flowed out from fan outlet is outwards flowed out by outlet housing.But, because the cover body head of existing outlet housing does not arrange any through hole on its straight tube wall, thus, during range hood work, injection and blending cannot be carried out to outlet housing surrounding air when air-flow flows through from outlet housing, like this, outlet housing mainly plays and carries out to air-flow the effect of flowing out of leading, and does not substantially have effect for the noise reducing fan outlet.In sum, need to be further improved existing outlet housing structure.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned prior art present situation, provides that a kind of structure is simple, the outlet housing used for range hood of excellent noise reduction effect.
The present invention solves the problems of the technologies described above adopted technical scheme: this outlet housing used for range hood, comprise bottom cover body and cover body head, be air intake bottom described cover body, described cover body head is outlet air end, it is characterized in that: the air outlet edge of described cover body head is broached-tooth design.
Preferably, the number of teeth of described sawtooth is 4 ~ 20.Find through experiment, after the number of teeth adopts above-mentioned scope, noise reduction is better.
As a kind of preferred version, the crown of described sawtooth is curved, and is rounding off between the tooth root of the two adjacent teeth of described sawtooth.After adopting said structure, each tooth of sawtooth is comparatively mellow and full, and the whole piece edge of air outlet is the curve of rounding off.
As another kind of preferred version, the crown of described sawtooth is wedge angle, and forms the angular V-notch of band between the two adjacent teeth of described sawtooth.After adopting said structure, sawtooth head can form wedge angle.
As such scheme further preferably, described cover body head draws in opening part gradually from bottom, and the size of angle α between the bus of described cover body head and the axis of cover body head is 2 °≤α≤20 °.Angle α is the convergency of outlet housing air outlet.
In order to obtain better noise reduction, the size of described angle α is α=5 °.
Further preferably, the numerical relation between the radius of a circle b at the radius of a circle a at the crown place of described sawtooth and the profile of tooth bottom line place of sawtooth is 0 < b-a≤20mm.B-a is permeability, is the important parameter affecting zigzag trailing edge performance.
Compared with prior art, the invention has the advantages that: this outlet housing used for range hood is by after the air outlet edge of cover body head forms broached-tooth design, during work, due to the existence of zigzag petal design, produce certain whirlpool, strong shearing is formed at crown, induction flows to whirlpool and enters shear layer, increase mixed area, change flow field characteristic, strengthen the energy with surrounding environment, the exchange of momentum, play good noise reduction, and, by finding the map analysis of range hood noise spectrum, the outlet housing of this broached-tooth design has certain noise reduction capability to full frequency band.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one;
Fig. 2 is the local radial view of the embodiment of the present invention one;
Fig. 3 is the structural representation of the embodiment of the present invention two.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Embodiment one:
As depicted in figs. 1 and 2, outlet housing used for range hood in the present embodiment to comprise bottom cover body 1 and cover body head 2, and bottom cover body, 1 is air intake, and cover body head 2 is outlet air end, the air outlet edge of cover body head 2 is broached-tooth design, and the number of teeth of sawtooth 21 can be set to 4 ~ 20.
In the present embodiment, the crown of sawtooth 21 is wedge angle, and forms the angular V-notch of band between the two adjacent teeth of sawtooth 21.Cover body head 2 draws in opening part gradually from bottom, and the size of angle α between the axis of the bus of cover body head 2 and cover body head 2 is 2 °≤α≤20 °, and the preferred value of α is α=5 °
In addition, the numerical relation between the radius of a circle b at the radius of a circle a at the crown place of sawtooth 21 and the profile of tooth bottom line place of sawtooth 21 is 0 < b-a≤20mm.
Embodiment two: as shown in Figure 3, in the present embodiment, the crown of the sawtooth 21 on outlet housing is curved, and is rounding off between the tooth root of the two adjacent teeth of sawtooth 21.All the other structures of outlet housing in the present embodiment are identical with the structure in embodiment one, do not launch to describe at this.
The foregoing is only the preferred embodiment of the present invention; it should be pointed out that for those of ordinary skills, do not departing under principle prerequisite of the present invention; can carry out multiple remodeling or improvement to the present invention, these are all regarded as within protection scope of the present invention.
Claims (7)
1. an outlet housing used for range hood, comprise (1) and cover body head (2) bottom cover body, bottom described cover body, (1) is air intake, described cover body head (2) is outlet air end, it is characterized in that: the air outlet edge of described cover body head (2) is sawtooth (21) structure.
2. outlet housing used for range hood according to claim 1, is characterized in that: the number of teeth of described sawtooth (21) is 4 ~ 20.
3. outlet housing used for range hood according to claim 1, is characterized in that: the crown of described sawtooth (21) is curved, and is rounding off between the tooth root of the two adjacent teeth of described sawtooth (21).
4. outlet housing used for range hood according to claim 1, is characterized in that: the crown of described sawtooth (21) is wedge angle, and forms the angular V-notch of band between the two adjacent teeth of described sawtooth (21).
5. the outlet housing used for range hood according to claim 3 or 4, it is characterized in that: described cover body head (2) draws in opening part gradually from bottom, and the size of angle α between the axis of the bus of described cover body head (2) and cover body head (2) is 2 °≤α≤20 °.
6. outlet housing used for range hood according to claim 5, is characterized in that: the size of described angle α is α=5 °.
7. the outlet housing used for range hood according to claim 3 or 4, is characterized in that: the numerical relation between the radius of a circle b at the radius of a circle a at the crown place of described sawtooth (21) and the profile of tooth bottom line place of sawtooth (21) is 0 < b-a≤20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610071520.0A CN105546608B (en) | 2016-02-01 | 2016-02-01 | A kind of outlet housing used for range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610071520.0A CN105546608B (en) | 2016-02-01 | 2016-02-01 | A kind of outlet housing used for range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105546608A true CN105546608A (en) | 2016-05-04 |
| CN105546608B CN105546608B (en) | 2018-05-29 |
Family
ID=55825989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610071520.0A Active CN105546608B (en) | 2016-02-01 | 2016-02-01 | A kind of outlet housing used for range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105546608B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583048A (en) * | 2016-12-27 | 2017-04-26 | 西北工业大学 | A sawtooth trailing edge structure for the air distribution plate of the electrostatic precipitator |
| CN106704316A (en) * | 2017-02-04 | 2017-05-24 | 江苏恒神股份有限公司 | Composite material connection piece structure |
| CN108240650A (en) * | 2017-10-31 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of frequency conversion noise reduction outlet housing of range hood |
| CN108240648A (en) * | 2017-10-31 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of frequency conversion noise reduction outlet housing of range hood |
| CN108240649A (en) * | 2017-10-31 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of frequency conversion noise reduction outlet housing of range hood |
| CN113982993A (en) * | 2021-10-26 | 2022-01-28 | 泛仕达机电股份有限公司 | Low-noise air guide ring and fan thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2398458Y (en) * | 1999-12-13 | 2000-09-27 | 顺德顺威电器有限公司 | Sawtooth volute |
| CN101294725A (en) * | 2008-05-27 | 2008-10-29 | 宁波方太厨具有限公司 | Ventilator air outlet cover with active noise reduction function |
| CN203560120U (en) * | 2013-10-18 | 2014-04-23 | 上虞市当代风机风冷设备有限公司 | Fan with large air volume |
| CN104500441A (en) * | 2014-10-28 | 2015-04-08 | 佛山市禾才科技服务有限公司 | Low-noise centrifugal fan |
| CN205536023U (en) * | 2016-02-01 | 2016-08-31 | 宁波方太厨具有限公司 | Range hood is with going out fan housing |
-
2016
- 2016-02-01 CN CN201610071520.0A patent/CN105546608B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2398458Y (en) * | 1999-12-13 | 2000-09-27 | 顺德顺威电器有限公司 | Sawtooth volute |
| CN101294725A (en) * | 2008-05-27 | 2008-10-29 | 宁波方太厨具有限公司 | Ventilator air outlet cover with active noise reduction function |
| CN203560120U (en) * | 2013-10-18 | 2014-04-23 | 上虞市当代风机风冷设备有限公司 | Fan with large air volume |
| CN104500441A (en) * | 2014-10-28 | 2015-04-08 | 佛山市禾才科技服务有限公司 | Low-noise centrifugal fan |
| CN205536023U (en) * | 2016-02-01 | 2016-08-31 | 宁波方太厨具有限公司 | Range hood is with going out fan housing |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583048A (en) * | 2016-12-27 | 2017-04-26 | 西北工业大学 | A sawtooth trailing edge structure for the air distribution plate of the electrostatic precipitator |
| CN106704316A (en) * | 2017-02-04 | 2017-05-24 | 江苏恒神股份有限公司 | Composite material connection piece structure |
| CN108240650A (en) * | 2017-10-31 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of frequency conversion noise reduction outlet housing of range hood |
| CN108240648A (en) * | 2017-10-31 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of frequency conversion noise reduction outlet housing of range hood |
| CN108240649A (en) * | 2017-10-31 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of frequency conversion noise reduction outlet housing of range hood |
| CN108240648B (en) * | 2017-10-31 | 2023-11-17 | 宁波方太厨具有限公司 | Variable-frequency noise-reduction air outlet cover of range hood |
| CN108240649B (en) * | 2017-10-31 | 2024-01-16 | 宁波方太厨具有限公司 | Variable-frequency noise-reduction air outlet cover of range hood |
| CN108240650B (en) * | 2017-10-31 | 2024-01-16 | 宁波方太厨具有限公司 | Variable-frequency noise-reduction air outlet cover of range hood |
| CN113982993A (en) * | 2021-10-26 | 2022-01-28 | 泛仕达机电股份有限公司 | Low-noise air guide ring and fan thereof |
| CN113982993B (en) * | 2021-10-26 | 2024-04-09 | 泛仕达机电股份有限公司 | Low-noise air guide ring and fan thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105546608B (en) | 2018-05-29 |
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