CN206257077U - A kind of range hood impeller - Google Patents
A kind of range hood impeller Download PDFInfo
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- CN206257077U CN206257077U CN201621397071.0U CN201621397071U CN206257077U CN 206257077 U CN206257077 U CN 206257077U CN 201621397071 U CN201621397071 U CN 201621397071U CN 206257077 U CN206257077 U CN 206257077U
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- blade
- angles
- concave section
- range hood
- shroud
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Abstract
The utility model discloses a kind of range hood impeller, including shroud, hub disk and the blade that is fixed between shroud and hub disk, it is characterised in that：The blade outboard side has the straightway and the concave section between adjacent straightway being spaced apart, concave section described in each is respectively to that should have corresponding R angles, also, position of the R angles from the middle of blade or in the middle of blade gradually increases to blade two ends.Compared with prior art, the utility model has the advantage of：Because the blade outboard side of the impeller has the straightway and the concave section between adjacent straightway that are spaced apart, each concave section is respectively to that should have corresponding R angles, and position of the R angles from the middle of blade or in the middle of blade gradually increases to blade two ends, effectively acting region uses rips noise reduction i.e. in the middle part of impeller, big wave noise reduction is used near the end plate position of impeller two, thus the static pressure of maximum static pressure and effective wind rate section can be effectively lifted while noise reduction.
Description
Technical field
The utility model is related to a kind of range hood impeller.
Background technology
Existing many wing blade noise reduction modes are mainly is sawed in blade outboard side i.e. blade trailing edge using uniform wave
Toothing, blade is using after wave broached-tooth design, although can reduce noise, but, while being greatly reduced blade reality
Acting area, reduces the static pressure of fan static pressure and effective wind rate section.Such as (the application publication number of Application No. 201310639469.5
It is the A of CN 103696985) disclosed in《A kind of impeller of centrifugal blower》, the impeller include front and rear ring, front and rear ring
Between be fixed with multiple blades, the port of export of blade by multiple zigzag waviness zigzags, so as to change blade trailing edge
The position of tail vortex shedding, so as to increase the distance between center of vorticity, it is suppressed that disturbance of the Shedding Vortex to wake, and then subtract
The aerodynamic noise that the unsteady pressure and wake's flow field of small blade surface cause.And for example Application No. 201110432234.X
Disclosed in the Chinese invention patent application of (application publication number is the U of CN 102536892)《Multiple wing with reinforcing air inlet function
Formula centrifugal blower》, the blade leading edge of the centrifugal blower is concave, or in convex, or in concavo-convex combination shape, or in scarf,
Blade exhaust side is made up of straight line, or is made up of curve, or is made up of broken line, or is made up of with Straight Combination curve, and blade is adopted
After the structure, correspondence noise reduction has certain effect.Although the impeller of above-mentioned existing centrifugal blower is by changing blade exit
The shape at end can to a certain extent reduce fan noise, but, it has been greatly reduced blade while noise reduction noise
Actual acting area, reduces fan static pressure.
Utility model content
Technical problem to be solved in the utility model is directed to above-mentioned state of the art, there is provided a kind of excellent noise reduction effect
The range hood impeller of maximum static pressure and effective wind rate section static pressure can be simultaneously lifted again.
The utility model solve the technical scheme that is used of above-mentioned technical problem for：The range hood impeller, including shroud,
Hub disk and the blade being fixed between shroud and hub disk, it is characterised in that：The blade outboard side has the straight line being spaced apart
Section and the concave section between adjacent straightway, the concave section described in each is respectively to that should have corresponding R angles, also, the R
Position of the angle from the middle of blade or in the middle of blade gradually increases to blade two ends.
Preferably, mid-game is also included, the blade is minimum at the corresponding R angles in concave section of closest mid-game, also, institute
It is in equal difference to state and the R angles being located between mid-game and hub disk are located on the R angles between mid-game and shroud and the blade on blade
Ordered series of numbers is distributed.
Further preferably, the hollow depth b of each concave section is equal, the spacing h phases between two adjacent concave sections
Deng.
In order that the spacing at the size at R angles and adjacent R angle is more reasonable, the corresponding R angles R in two adjacent concave sectionsn、Rn+1
Meet with the spacing hAlso, 1 °≤θ≤10 °.
Further preferably, the corresponding R angles R in the concave section of closest shroud on the blade1Ratio with the spacing h is expired
0.01≤R of foot1/h≤0.2.After the number range, blade trailing edge excision concave section can retain while noise is reduced
Higher static pressure head, anti-air outlet pullback capacity is lifted with this.
Further preferably, near with the distance between blade corresponding end being a in the middle of the concave section of blade tip, should be away from
Ratio from a and hollow depth b meets 3≤a/b≤20.
Further preferably, the ratio of the hollow depth b and spacing h meets 3≤h/b≤20.
Used as another preferred scheme, the R angles in the middle of the blade corresponding to concave section are minimum, it is closest on the blade before
R angles corresponding to the concave section of the concave section of disk and closest hub disk are maximum and equal, also, the blade in the middle of with shroud it
Between R angles and blade in the middle of and hub disk between R angles in arithmetic progression be distributed.
Compared with prior art, the utility model has the advantage of：Because the blade outboard side of the impeller has interval point
The straightway of cloth and the concave section between adjacent straightway, each concave section is respectively to that should have corresponding R angles, and R angles are certainly
Gradually increase to blade two ends in the middle of blade or near middle position, i.e., effectively acting region uses small echo in the middle part of impeller
Unrestrained noise reduction, near the end plate position of impeller two use big wave noise reduction, thus can effectively be lifted while noise reduction maximum static pressure and
The static pressure of effective wind rate section.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment；
Fig. 2 is the blade construction schematic diagram of the utility model embodiment；
Fig. 3 is the enlarged diagram of part A in Fig. 2；
Fig. 4 is the relation schematic diagram at two adjacent concave section R angles of the utility model embodiment.
Specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
As shown in figure 1, the range hood impeller in the present embodiment includes blade 1, shroud 2, hub disk 3 and mid-game 4, blade is worn
Mid-game 4 is crossed, the two ends of blade 1 are separately fixed on shroud 2 and hub disk 3, and the mounting structure of blade 1 is identical with existing impeller,
This does not launch description.
As shown in Figures 2 to 4, the outer side edges of blade 1 are blade trailing edge with the straightway 11 being spaced apart and positioned at phase
Concave section 12 between adjacent straightway, i.e., form wave broached-tooth design equivalent in blade trailing edge.Especially, each concave section
12 respectively to that should have corresponding R angles, also, R angles gradually increase from the middle of blade 1 to blade two ends.In the present embodiment, blade 1
It is minimum at the corresponding R angles in the concave section 12 of closest mid-game 4, also, be located on blade 1 the R angles between mid-game 4 and shroud 2 with
And the R angles being located on blade 1 between mid-game 4 and hub disk 3 are distributed in arithmetic progression.
In the present embodiment, the hollow depth b of each concave section 12 is equal, hollow depth b be trough and blade trailing edge it
Between distance.Spacing h between two adjacent concave sections 12 is equal, and spacing h is the distance between two neighboring trough.And
And, the corresponding R angles R in two adjacent concave sections 12n、Rn+1Meet with spacing hWherein, θ is used for controlling leaf
R angles at piece trailing edge along length of blade direction change, also, according to impeller size and height, θ general controls are in 1 °≤θ
≤10°.With in Fig. 2 direction shown in arrow B as preceding to the corresponding R angles R in the concave section 12 of closest shroud 2 on blade 11With
Ratio away from h meets 0.01≤R1/h≤0.2。
In addition, near with the distance between blade corresponding end being a in the middle of the concave section 12 of end, this apart from a with it is interior
The ratio of recessed depth b meets 3≤a/b≤20.The ratio of hollow depth b and spacing h meets 3≤h/b≤20.
Because impeller middle part is region of effectively doing work, the impeller blade of the present embodiment is by effective acting area in the middle part of impeller
Domain uses rips noise reduction, uses big wave noise reduction near the position of impeller front disc, hub disk, also, use above-mentioned number range
Afterwards, it can be ensured that impeller can effectively lift the static pressure of maximum static pressure and effective wind rate section while noise reduction, lift anti-air outlet
The ability of resistance.
The foregoing is only preferred embodiment of the present utility model, it is noted that for those of ordinary skill in the art
For, under the premise of principle of the present utility model is not departed from, various remodeling or improvement can be carried out to the utility model, such as,
For the impeller for being not provided with mid-game, the R angles that can be designed in the middle of blade are minimum, the R of closest shroud and hub disk on blade
Angle is maximum and equal, also, the R angles in the middle of blade and between shroud and the R angles between the centre of blade 1 and hub disk are in equal difference
Ordered series of numbers is distributed, and these are regarded as within protection domain of the present utility model.
Claims (8)
1. a kind of range hood impeller, including shroud (2), hub disk (3) and the blade (1) being fixed between shroud and hub disk, its
It is characterised by：Blade (1) outer side edges have the straightway (11) and the indent between adjacent straightway being spaced apart
Section (12), concave section (12) described in each respectively to that should have a corresponding R angles, also, the R angles from the middle of blade (1) or
Position in the middle of blade gradually increases to blade two ends.
2. range hood impeller according to claim 1, it is characterised in that：Also include mid-game (4), the blade (1)
It is minimum at the corresponding R angles in concave section (12) of closest mid-game (4), also, mid-game (4) and shroud are located on the blade (1)
(2) the R angles between mid-game (4) and hub disk (3) are located on the R angles and the blade (1) between to be distributed in arithmetic progression.
3. range hood impeller according to claim 1, it is characterised in that：The hollow depth of each concave section (12)
B is equal, and the spacing h between two adjacent concave sections (12) is equal.
4. range hood impeller according to claim 3, it is characterised in that：The corresponding R angles of two adjacent concave sections (12)
Rn、Rn+1Meet with the spacing hAlso, 1 °≤θ≤10 °.
5. range hood impeller according to claim 4, it is characterised in that：Closest shroud (2) on the blade (1)
The corresponding R angles R in concave section (12)1Ratio with the spacing h meets 0.01≤R1/h≤0.2。
6. range hood impeller according to claim 3, it is characterised in that：Near in the concave section (12) of blade tip
Between with the distance between blade corresponding end be a, this meets 3≤a/b≤20 apart from the ratio of a and hollow depth b.
7. range hood impeller according to claim 3, it is characterised in that：The ratio of the hollow depth b and spacing h
Value meets 3≤h/b≤20.
8. range hood impeller according to claim 1, it is characterised in that：Concave section (12) institute in the middle of the blade (1)
Corresponding R angles are minimum, the concave section of the concave section (12) of closest shroud (2) and closest hub disk (3) on the blade (1)
(12) the R angles corresponding to are maximum and equal, also, the blade (1) in the middle of and shroud (2) between R angles and blade (1) in
Between with the R angles between hub disk (3) in arithmetic progression be distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621397071.0U CN206257077U (en) | 2016-12-19 | 2016-12-19 | A kind of range hood impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621397071.0U CN206257077U (en) | 2016-12-19 | 2016-12-19 | A kind of range hood impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206257077U true CN206257077U (en) | 2017-06-16 |
Family
ID=59030125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621397071.0U Active CN206257077U (en) | 2016-12-19 | 2016-12-19 | A kind of range hood impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206257077U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640752A (en) * | 2016-12-19 | 2017-05-10 | 宁波方太厨具有限公司 | Impeller of kitchen ventilator |
-
2016
- 2016-12-19 CN CN201621397071.0U patent/CN206257077U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640752A (en) * | 2016-12-19 | 2017-05-10 | 宁波方太厨具有限公司 | Impeller of kitchen ventilator |
| CN106640752B (en) * | 2016-12-19 | 2023-08-18 | 宁波方太厨具有限公司 | Kitchen ventilator impeller |
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