CN208252425U - A kind of high-efficient low-noise centrifugal impeller - Google Patents
A kind of high-efficient low-noise centrifugal impeller Download PDFInfo
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- CN208252425U CN208252425U CN201820700331.XU CN201820700331U CN208252425U CN 208252425 U CN208252425 U CN 208252425U CN 201820700331 U CN201820700331 U CN 201820700331U CN 208252425 U CN208252425 U CN 208252425U
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Abstract
The utility model discloses a kind of high-efficient low-noise centrifugal impellers, including impeller front disc, blade assembly and impeller hub disk, the blade assembly is rotatably arranged between the impeller front disc and the impeller hub disk, the blade assembly includes pedestal and several arc shaped blades around base center setting, the impeller front disc is equipped with arc-shaped outer wall, and the ratio between radius and the width of the arc shaped blade of the arc-shaped outer wall are 0.45~0.55:1.By the radius of the arc-shaped outer wall of optimization design impeller front disc and the width ratio of arc shaped blade, the vortex for reducing impeller Ye Daonei separates loss, can effectively promote operation air quantity and operational efficiency；Using non-equal angular arc shaped blade distribution mode, discrete rotational noise can be effectively improved, improve noise subjectivity sound quality sense by.
Description
Technical field
The utility model relates to centrifugal blower technical field, in particular to a kind of high-efficient low-noise centrifugal impeller.
Background technique
Centrifugal impeller can change air flow direction, by axial incoming flow transformation circumferentially air-flow, backward centrifugal impeller be even more with
By means of its flexible outlet air form, it can satisfy the electric equipment products design layout of all kinds of forms and be widely used.Air purifier,
New Fan Product be after to centrifugal impeller important application occasion, and these two types of product own system resistances are higher and indoors
It is more demanding using noise objective.
It is well known that impeller noise is directly proportional to five powers of revolving speed, it is simply by wheel speed is improved to overcome
System resistance, raising flow will necessarily bring higher noise, therefore under the premise of controlling wheel speed, further increase impeller
Efficiency and static pressure become the technical problem underlying for guaranteeing properties of product and noise objective and improve direction.
Utility model content
In order to improve impeller working efficiency under the premise of not improving wheel speed, keeping low noise, the utility model is public
A kind of high-efficient low-noise centrifugal impeller, including impeller front disc, blade assembly and impeller hub disk are opened, the blade assembly rotation is set
It sets between the impeller front disc and the impeller hub disk, the blade assembly includes pedestal and sets around the base center
Several arc shaped blades set, the impeller front disc are equipped with arc-shaped outer wall, the radius and the arc-shaped leaf of the arc-shaped outer wall
The ratio between width of piece is 0.45~0.55:1.
As a further improvement of the above technical scheme, several arc shaped blades are with non-angularly around the pedestal
Center setting.
As a further improvement of the above technical scheme, the width of the radius of the arc-shaped outer wall and the arc shaped blade
The ratio between be 0.5:1.
As a further improvement of the above technical scheme, between the end of the arc shaped blade and the center of the pedestal
Central angle is 26.7 °~36.7 °.
As a further improvement of the above technical scheme, the radius of the arc-shaped outer wall is 28mm, the arc shaped blade
Width be 57mm.
The beneficial effects of the utility model are:
1, by the width ratio of the radius of the arc-shaped outer wall of optimization design impeller front disc and arc shaped blade, impeller leaf road is reduced
Interior vortex separates loss, can effectively promote operation air quantity and operational efficiency；
2, using non-equal angular arc shaped blade distribution mode, it can be effectively improved discrete rotational noise, improve noise master
Kwan-yin texture by.
Detailed description of the invention
In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will make below to required in embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention,
For those of ordinary skill in the art, without any creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the schematic diagram of the section structure of the utility model；
Fig. 3 is the overlooking structure diagram of the utility model.
Appended drawing reference:
1- impeller front disc；The arc-shaped outer wall of 11-；2- blade assembly；21- pedestal；22- arc shaped blade；3- impeller hub disk.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment
It is only used for explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as
When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.
As shown in Figure 1-3, the high-efficient low-noise centrifugal impeller of the present embodiment, including impeller front disc 1, blade assembly 2 and leaf
Hub disk 3 is taken turns, blade assembly 2 is rotatably arranged between impeller front disc 1 and impeller hub disk 2.
Blade assembly 2 includes that pedestal 21 and several arc shaped blades 22 around the setting of 21 center of pedestal, impeller front disc 1 are set
There is arc-shaped outer wall 11, the ratio between radius R and the width B of arc shaped blade 22 of arc-shaped outer wall 11 are 0.45~0.55:1, wherein B
=(the inner edge diameter D2 of the external profile diameter D1- arc shaped blade 22 of arc shaped blade 22)/2.
The flow losses that centrifugal impeller operation generates mainly include that air-flow enters the vortex separation loss generated inside fan,
It is vortexed separation loss to reduce, needs rationally to control the radius R of the arc-shaped outer wall 11 of impeller front disc 1 and the width of arc shaped blade 22
Spend the proportionate relationship between B.If R/B is too small, the inner wall for being easy disk 1 before the impeller forms low-pressure area separation, causes vortex point
From loss；If R/B is excessive, it is easy to cause the air outlet width of impeller hub disk 2 to become smaller, increases wind resistance out, and then influence
Air quantity.
By rationally controlling the radius R of the arc-shaped outer wall 11 of impeller front disc 1 and the width of arc shaped blade 22 in the present embodiment
The proportionate relationship between B is spent, to reduce the vortex separation loss of impeller Ye Daonei.Preferably, the radius R of arc-shaped outer wall 11
It is 0.5:1 with the ratio between the width of arc shaped blade 22, the radius R of arc-shaped outer wall 11 is 28mm, and the width B of arc shaped blade 22 is
57mm。
The discrete rotational noise of centrifugal impeller is to lead to that aerodynamic noise is higher, generates one of the principal element of abnormal sound, discrete
The main reason for rotational noise generates is that blade periodically pats surrounding air in rotary course, the blade being angularly distributed
Scheme, which will cause periodic air impulsive motion superposition, causes noise higher.In the present embodiment to arc shaped blade 22 carry out it is non-angularly
Distribution design, largely dispersed air impulsive motion superposition, to inhibit discrete rotational noise.
Arc shaped blade 22 is angularly arranged around the center of pedestal 21 with non-, in the end of arc shaped blade 22 and pedestal 21
Central angle between the heart is 26.7 °~36.7 °.
The beneficial effects of the utility model are:
1, it by the width ratio of the radius of the arc-shaped outer wall 11 of optimization design impeller front disc 1 and arc shaped blade 22, reduces
The vortex of impeller Ye Daonei separates loss, can effectively promote operation air quantity and operational efficiency；
2, using non-equal angular 22 distribution mode of arc shaped blade, it can be effectively improved discrete rotational noise, improve noise
Subjective sound quality sense by.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.It in addition, the technical solution between each embodiment can be combined with each other, but must be general with this field
Based on logical technical staff can be realized, when the combination of technical solution occur it is conflicting or when cannot achieve should people think this
The combination of kind technical solution is not present, also not within the protection scope of the requires of the utility model.
Claims (5)
1. a kind of high-efficient low-noise centrifugal impeller, including impeller front disc, blade assembly and impeller hub disk, the blade assembly rotation
It is arranged between the impeller front disc and the impeller hub disk, which is characterized in that the blade assembly includes pedestal and surrounds
Several arc shaped blades of base center setting, the impeller front disc are equipped with arc-shaped outer wall, and the half of the arc-shaped outer wall
The ratio between width of diameter and the arc shaped blade is 0.45~0.55:1.
2. high-efficient low-noise centrifugal impeller according to claim 1, which is characterized in that several arc shaped blades are with non-isogonism
Degree is arranged around the center of the pedestal.
3. high-efficient low-noise centrifugal impeller according to claim 2, which is characterized in that the radius of the arc-shaped outer wall and institute
Stating the ratio between width of arc shaped blade is 0.5:1.
4. high-efficient low-noise centrifugal impeller according to claim 3, which is characterized in that the end of the arc shaped blade with it is described
Central angle between the center of pedestal is 26.7 °~36.7 °.
5. high-efficient low-noise centrifugal impeller according to claim 4, which is characterized in that the radius of the arc-shaped outer wall is
28mm, the width of the arc shaped blade are 57mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820700331.XU CN208252425U (en) | 2018-05-11 | 2018-05-11 | A kind of high-efficient low-noise centrifugal impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820700331.XU CN208252425U (en) | 2018-05-11 | 2018-05-11 | A kind of high-efficient low-noise centrifugal impeller |
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| Publication Number | Publication Date |
|---|---|
| CN208252425U true CN208252425U (en) | 2018-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820700331.XU Active CN208252425U (en) | 2018-05-11 | 2018-05-11 | A kind of high-efficient low-noise centrifugal impeller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113221484A (en) * | 2021-06-02 | 2021-08-06 | 上海宝钢节能环保技术有限公司 | Rapid selection method, device and equipment for in-service remanufacturing design scheme of fan |
-
2018
- 2018-05-11 CN CN201820700331.XU patent/CN208252425U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113221484A (en) * | 2021-06-02 | 2021-08-06 | 上海宝钢节能环保技术有限公司 | Rapid selection method, device and equipment for in-service remanufacturing design scheme of fan |
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