CN205536023U - Range hood is with going out fan housing - Google Patents
Range hood is with going out fan housing Download PDFInfo
- Publication number
- CN205536023U CN205536023U CN201620103063.4U CN201620103063U CN205536023U CN 205536023 U CN205536023 U CN 205536023U CN 201620103063 U CN201620103063 U CN 201620103063U CN 205536023 U CN205536023 U CN 205536023U
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- China
- Prior art keywords
- cover body
- range hood
- body head
- sawtooth
- outlet housing
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- 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.)
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Abstract
The utility model discloses a range hood is with going out fan housing, including cover body bottom and cover body head, cover body bottom is the air inlet end, cover body head hold its characterized in that for the air -out: the air outlet border of cover body head is the sawtooth structure. Compared with the prior art, the utility model has the advantages of: after this range hood is with going out fan housing forms the sawtooth structure through the air outlet border at cover body head, in operation, because the existence of zigzag petal structure, produces at certain whirlpool, form strong shearing at the prong, induced flow direction whirlpool gets into the shear layer, mixed area has been increased, the flow field characteristic has been changed, strengthen the energy with the surrounding environment, the exchange of momentum, play better the noise reduction effect, furthermore, through discovering the map analysis of range hood noise spectrum, the play fan housing of this kind of sawtooth structure all has certain ability of making an uproar of falling to full frequency channel.
Description
Technical field
This utility model relates to a kind of outlet housing used for range hood.
Background technology
At present, the air outlet at range hood is typically fitted with outlet housing, and existing outlet housing the most all includes cover body
Bottom and cover body head, be arranged on bottom cover body on the fan outlet of range hood, be i.e. air intake bottom cover body, cover
Body head is outlet air end, and the air-flow flowed out from fan outlet is flowed outwardly by outlet housing.But, due to existing air-out
The cover body head of cover is not provided with any through hole on its straight tube wall, thus, during range hood work, air-flow is from outlet housing
Outlet housing surrounding air cannot carry out injection and blending when flowing through, so, outlet housing has acted primarily as and has guided air-flow
The effect flowed out, and substantially there is no effect for reducing the noise of fan outlet.In sum, need to existing go out
Fan housing structure is further improved.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned prior art present situation, it is provided that a kind of simple in construction, fall
Make an uproar effective outlet housing used for range hood.
The technical scheme that the above-mentioned technical problem of this utility model solution is used is: this outlet housing used for range hood, including cover
With cover body head bottom body, being air intake bottom described cover body, described cover body head is outlet air end, it is characterised 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.Finding through experiment, after the number of teeth uses above-mentioned scope, noise reduction is imitated
Fruit is preferably.
As a kind of preferred version, the crown of described sawtooth is curved, and between the tooth root of the two adjacent teeth of described sawtooth is
Rounding off.After using said structure, each tooth of sawtooth is the most mellow and the fullest, and the whole piece edge of air outlet is rounding off
Curve.
As another kind of preferred version, the crown of described sawtooth is to form band between wedge angle, and the two adjacent teeth of described sawtooth
Angular V-notch.After using said structure, sawtooth head can form wedge angle.
Further preferred as such scheme, described cover body head gradually draws in opening part from bottom, and described cover
The size of the angle α between bus and the axis of cover body head of body head is 2 °≤α≤20 °.Angle α is
The convergency of outlet housing air outlet.
In order to obtain more preferable noise reduction, the size of described angle α is α=5 °.
Further preferably, the radius of the circle at the profile of tooth bottom line place of the radius a of the circle at the crown place of described sawtooth and sawtooth
Numerical relation between b is 0 ＜ b-a≤20mm.B-a is permeability, is the important ginseng affecting zigzag trailing edge performance
Number.
Compared with prior art, the utility model has the advantage of: this outlet housing used for range hood is by cover body head
After air outlet edge forms broached-tooth design, during work, due to the existence of zigzag petal design, produce certain whirlpool,
Crown forms strong shearing, and induction flows to whirlpool and enters shear layer, increases mixed area, change flow field characteristic, strengthens
With energy, the exchange of momentum of surrounding, play preferable noise reduction, and, by range hood noise frequency
Spectrum analysis finds, 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 this utility model embodiment one；
Fig. 2 is the local radial view of this utility model embodiment one；
Fig. 3 is the structural representation of this utility model embodiment two.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, this utility model is described in further detail.
Embodiment one:
As depicted in figs. 1 and 2, the outlet housing used for range hood in the present embodiment includes bottom cover body 1 and cover body head 2,
Bottom cover body, 1 is air intake, and cover body head 2 is outlet air end, and the air outlet edge of cover body head 2 is broached-tooth design, saw
The number of teeth of tooth 21 can be set to 4～20.
In the present embodiment, the crown of sawtooth 21 is to be formed between wedge angle, and the two adjacent teeth of sawtooth 21 to carry angular V
V notch v.Cover body head 2 gradually draws in opening part from bottom, and in the bus of cover body head 2 and cover body head 2
The size of the angle α between axis is 2 °≤α≤20 °, and the preferred value of α is α=5 °
It addition, the radius b of the circle at the profile of tooth bottom line place of the radius a of the circle at the crown place of sawtooth 21 and sawtooth 21 it
Between numerical relation be 0 ＜ b-a≤20mm.
Embodiment two: as it is shown on figure 3, in the present embodiment, the crown of the sawtooth 21 on outlet housing is curved, and sawtooth
It it is rounding off between the tooth root of the two adjacent teeth of 21.In remaining structure of outlet housing in the present embodiment and embodiment one
Structure is identical, does not launch at this to describe.
The foregoing is only preferred implementation of the present utility model, it is noted that for those of ordinary skill in the art
Speech, without departing under principle premise of the present utility model, can carry out multiple remodeling or improvement to this utility model, these
Within being regarded as protection domain of the present utility model.
Claims (7)
1. an outlet housing used for range hood, including (1) bottom cover body and cover body head (2), bottom described cover body, (1) is for entering
Wind end, described cover body head (2) is outlet air end, it is characterised in that: the air outlet edge of described cover body head (2) is saw
Tooth (21) structure.
Outlet housing used for range hood the most according to claim 1, it is characterised in that: the number of teeth of described sawtooth (21) is
4～20.
Outlet housing used for range hood the most according to claim 1, it is characterised in that: the crown of described sawtooth (21) in
It is rounding off between arc, and the tooth root of the two adjacent teeth of described sawtooth (21).
Outlet housing used for range hood the most according to claim 1, it is characterised in that: the crown of described sawtooth (21) is
Formed between wedge angle, and the two adjacent teeth of described sawtooth (21) and carry angular V-notch.
5. according to the outlet housing used for range hood described in claim 3 or 4, it is characterised in that: described cover body head
(2) gradually draw in opening part from bottom, and between the axis of the bus of described cover body head (2) and cover body head (2)
The size of angle α is 2 °≤α≤20 °.
Outlet housing used for range hood the most according to claim 5, it is characterised in that: the size of described angle α is
α=5 °.
7. according to the outlet housing used for range hood described in claim 3 or 4, it is characterised in that: the tooth of described sawtooth (21)
Numerical relation between the radius b of the circle at the radius a of the circle at point place 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 |
|---|---|---|---|
| CN201620103063.4U CN205536023U (en) | 2016-02-01 | 2016-02-01 | Range hood is with going out fan housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620103063.4U CN205536023U (en) | 2016-02-01 | 2016-02-01 | Range hood is with going out fan housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205536023U true CN205536023U (en) | 2016-08-31 |
Family
ID=56775343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620103063.4U Active CN205536023U (en) | 2016-02-01 | 2016-02-01 | Range hood is with going out fan housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205536023U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546608A (en) * | 2016-02-01 | 2016-05-04 | 宁波方太厨具有限公司 | Outlet housing for range hood |
| CN106594815A (en) * | 2016-10-11 | 2017-04-26 | 美的集团股份有限公司 | Microwave oven |
| CN108412618A (en) * | 2018-04-17 | 2018-08-17 | 中国人民解放军国防科技大学 | Hypersonic/supersonic axisymmetric inlet lip and design method thereof |
-
2016
- 2016-02-01 CN CN201620103063.4U patent/CN205536023U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546608A (en) * | 2016-02-01 | 2016-05-04 | 宁波方太厨具有限公司 | Outlet housing for range hood |
| CN105546608B (en) * | 2016-02-01 | 2018-05-29 | 宁波方太厨具有限公司 | A kind of outlet housing used for range hood |
| CN106594815A (en) * | 2016-10-11 | 2017-04-26 | 美的集团股份有限公司 | Microwave oven |
| CN106594815B (en) * | 2016-10-11 | 2019-05-03 | 美的集团股份有限公司 | Micro-wave oven |
| CN108412618A (en) * | 2018-04-17 | 2018-08-17 | 中国人民解放军国防科技大学 | Hypersonic/supersonic axisymmetric inlet lip and design method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |