CN204591781U - A kind of impeller and centrifugal blower - Google Patents
A kind of impeller and centrifugal blower Download PDFInfo
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- CN204591781U CN204591781U CN201420866464.6U CN201420866464U CN204591781U CN 204591781 U CN204591781 U CN 204591781U CN 201420866464 U CN201420866464 U CN 201420866464U CN 204591781 U CN204591781 U CN 204591781U
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- impeller
- wheel disc
- cylindrical structure
- impeller body
- vortex ring
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Abstract
The utility model embodiment discloses a kind of impeller and centrifugal blower, has the effect reducing noise, raise the efficiency.A kind of impeller in the utility model, specifically comprises: wheel disc and several blades be arranged on wheel disc and several anti-vortex ring; Wheel disc side plate radius is greater than the radius of the cylindrical structure that some blades surround; Anti-vortex ring is loop configuration, is arranged at the outer side wall of cylindrical structure.Because wheel disc side plate radius is greater than the radius of the cylindrical structure that some blades surround, dynamic pressure can be made to be converted to static pressure, improve static pressure efficiency, loop configuration anti-vortex ring plays water conservancy diversion, weakens the trend of air flow direction shroud, reduces the impact of Secondary Flow with this, thus minimizing noise, raise the efficiency.
Description
Technical field
The utility model relates to the ventilation equipment of mechanical field, relates to a kind of impeller and centrifugal blower further.
Background technique
Centrifugal blower is widely used in the ventilation of factory, mine, tunnel, cooling tower, vehicle, boats and ships and building.
Operationally, air enters blower fan by the intake grill of blower fan both sides to centrifugal blower, and the impeller in then rotating does work to it, increases its speed and pressure.Along with gas velocity, the increase of degree, when the power that impeller provides is not enough to the centrifugal force of airflow balancing rotation, air-flow just departs from impeller, then leaves blower fan.
Air-flow from volute inlet through impeller to volute outlet, the direction of air-flow experienced by the change of 90 degree, between the shroud and volute of blower of impeller, create Secondary Flow, and this makes the noise of blower fan become large, and efficiency reduces.In order to reduce the impact of Secondary Flow, someone proposes to increase anti-vortex ring between slip ring and impeller, but the proper flow of this method meeting barrier air, make Secondary Flow toward impeller medial movement, fan performance is deteriorated.
Model utility content
The utility model embodiment provides a kind of impeller and centrifugal blower, can reduce noise, raise the efficiency.
A kind of impeller in the utility model, specifically comprises:
Wheel disc and several blades be arranged on wheel disc and several anti-vortex ring;
Wheel disc side plate radius is greater than the radius of the cylindrical structure that some blades surround;
Anti-vortex ring is loop configuration, is arranged at the outer side wall of cylindrical structure.
Optionally,
Half path length 5mm-10mm of wheel disc side plate radius ratio cylindrical structure.
Optionally,
Anti-vortex ring is arranged at 1/3rd places or 1/4th places of the outer side wall of cylindrical structure.
Optionally,
This impeller also comprises the first impeller body and the second impeller body, and the first impeller body is relative with the wheel disc of the second impeller body, is connected by removably;
Blade on first impeller body and the second impeller body upper blade are obliquely installed, and both V-shaped structures are staggered.
The utility model additionally provides a kind of centrifugal blower, specifically comprises:
Motor, spiral case and impeller;
Motor and impeller are accommodated in spiral case;
Motor is connected with impeller, and drives described vane rotary;
Impeller comprises:
Wheel disc, be arranged on some blades on wheel disc and several anti-vortex ring;
Wheel disc side plate radius is greater than the radius of the cylindrical structure that some blades surround;
Anti-vortex ring is loop configuration, is arranged at the outer side wall of cylindrical structure.
Optionally,
Half path length 5mm-10mm of wheel disc side plate radius ratio cylindrical structure.
Optionally,
Anti-vortex ring is arranged at 1/3rd places or 1/4th places of the outer side wall of cylindrical structure.
Optionally,
This impeller also comprises the first impeller body and the second impeller body, and the first impeller body is relative with the wheel disc of the second impeller body, is connected by removably;
Blade on first impeller body and the second impeller body upper blade are obliquely installed, and both V-shaped structures are staggered.
Optionally,
In this spiral case, vortex shield is set.
Optionally,
Vortex shield is arranged at 1/3rd places or 1/4th places in spiral case.
As can be seen from the above technical solutions, the utility model embodiment has the following advantages:
Because wheel disc side plate radius is greater than the radius of the cylindrical structure that some blades surround, dynamic pressure can be made to be converted to static pressure, improve static pressure efficiency, loop configuration anti-vortex ring plays water conservancy diversion, weakens the trend of air flow direction shroud, reduces the impact of Secondary Flow with this, thus minimizing noise, raise the efficiency.
Accompanying drawing explanation
Fig. 1 is an enforcement structural drawing of a kind of impeller in the utility model;
Fig. 2 is another embodiment's transverse cross-sectional view and the longitudinal sectional drawing of a kind of impeller in the utility model;
Fig. 3 is the structural drawing of a kind of centrifugal blower embodiment in the utility model;
Fig. 4 is worm frame figure in a kind of centrifugal blower embodiment in the utility model.
Embodiment
The utility model embodiment provides a kind of impeller and centrifugal blower, can reduce noise, raise the efficiency.
Refer to Fig. 1, a kind of impeller embodiment in the utility model, specifically comprises:
Wheel disc 1 and several blades 2 be arranged on wheel disc 1 and several anti-vortex ring 3;
Wheel disc side plate radius is greater than the radius of the cylindrical structure that some blades 2 surround;
Anti-vortex ring 3 is loop configuration, is arranged at the outer side wall of cylindrical structure.
In the present embodiment, because wheel disc side plate radius is greater than the radius of the cylindrical structure that some blades surround, dynamic pressure can be made to be converted to static pressure, improve static pressure efficiency, loop configuration anti-vortex ring plays water conservancy diversion, weakens the trend of air flow direction shroud, reduces the impact of Secondary Flow with this, thus minimizing noise, raise the efficiency.
It should be noted that half path length 5mm-10mm of wheel disc side plate radius ratio cylindrical structure, anti-vortex ring is arranged at 1/3rd places of the outer side wall of cylindrical structure or 1/4th places are preferred.
Refer to Fig. 2, in the utility model, a kind of impeller embodiment comprises further:
First impeller body 4 is relative with the wheel disc of the second impeller body 5 with the second impeller body 5, first impeller body 4, is connected by removably;
Blade on first impeller body 4 and the second impeller body 5 upper blade are obliquely installed, both V-shaped Structural assignments.
It should be noted that, the inclination of blade install to ensure blade in the running outside first with the axes intersect at snail tongue place, therefore, the V-shaped structure of blade on the blade of the first impeller body 4 and the second impeller body 5 is staggered.Such as, 1/3rd places of the blade tip of blade on the second impeller body 5 of the first impeller body 4 or 1/2nd places are arranged, and concrete position is in this no limit.
Due to centrifugal blower operationally, clash into snail tongue when pulsing airflow leaves impeller, Secondary Flow produces serious discrete noise; The form that existing blade all adopts straight line to install, this cause pulsing airflow and snail tongue area of contact large; And adopt the method for oblique snail tongue or oblique impeller, air-flow can be caused uneven, easily produce vibration; Adopt the mode of staggered impeller, the first-order section of noise can only be reduced, but second order and other Harmony response spectrums can increase a lot.Make the V-shaped Structural assignments of blade improve air flow status, reduce the noise of blower fan, discrete noise part especially wherein; Interlaced arrangement can reduce blade tilt, avoids causing degrading, also makes both sides intake grill operating mode the same, can not cause vibration; Inclination impeller improves the blast outside impeller, inhibits the Secondary Flow in impeller to a certain extent, improves the efficiency of blower fan.
Refer to Fig. 1 to Fig. 3, the utility model additionally provides a kind of centrifugal blower, specifically comprises:
Motor 6, spiral case 7 and impeller 8;
Motor 6 and impeller 8 are accommodated in spiral case 7;
Motor 6 is connected with impeller 8, and drives described impeller 8 to rotate;
Impeller 8 comprises:
Wheel disc 1 and several blades 2 be arranged on wheel disc 1 and several anti-vortex ring 3;
Wheel disc side plate radius is greater than the radius of the cylindrical structure that some blades 2 surround;
Anti-vortex ring 3 is loop configuration, is arranged at the outer side wall of cylindrical structure.
In the present embodiment, because wheel disc side plate radius is greater than the radius of the cylindrical structure that some blades surround, dynamic pressure can be made to be converted to static pressure, improve static pressure efficiency, loop configuration anti-vortex ring plays water conservancy diversion, weakens the trend of air flow direction shroud, reduces the impact of Secondary Flow with this, thus minimizing noise, raise the efficiency.
It should be noted that half path length 5mm-10mm of wheel disc side plate radius ratio cylindrical structure, anti-vortex ring is arranged at 1/3rd places of the outer side wall of cylindrical structure or 1/4th places are preferred.
Refer to Fig. 2, in the utility model, a kind of centrifugal blower embodiment comprises further:
First impeller body 4 is relative with the wheel disc of the second impeller body 5 with the second impeller body 5, first impeller body 4, is connected by removably;
Blade on first impeller body 4 and the second impeller body 5 upper blade are obliquely installed, and both V-shaped structures are staggered./ 3rd places of the blade tip of blade on the second impeller body 5 of the first impeller body 4 or 1/2nd places are arranged, and concrete position is in this no limit.
It should be noted that this angle of inclination can between 100-180 degree.
Due to centrifugal blower operationally, clash into snail tongue when pulsing airflow leaves impeller, Secondary Flow produces serious discrete noise; The form that existing blade all adopts straight line to install, this cause pulsing airflow and snail tongue area of contact large; And adopt the method for oblique snail tongue or oblique impeller, air-flow can be caused uneven, easily produce vibration; Adopt the mode of staggered impeller, the first-order section of noise can only be reduced, but second order and other Harmony response spectrums can increase a lot.Make the V-shaped Structural assignments of blade improve air flow status, reduce the noise of blower fan, discrete noise part especially wherein; Interlaced arrangement can reduce blade tilt, avoids causing degrading, also makes both sides intake grill operating mode the same, can not cause vibration; Inclination impeller improves the blast outside impeller, inhibits the Secondary Flow in impeller to a certain extent, improves the efficiency of blower fan.
It should be noted that this centrifugal blower embodiment comprises further: arrange vortex shield 9 in spiral case, it is preferred that vortex shield 9 can be arranged at 1/3rd places or 1/4th places in spiral case.Vortex shield 9 can play the effect of refluence, weakens the trend of air flow direction shroud, reduces the impact of Secondary Flow with this, thus reduces noise, raises the efficiency.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the specific works process of the device of foregoing description, with reference to the corresponding process in preceding method embodiment, can not repeat them here.In several embodiments that the application provides, should be understood that, disclosed device can realize by another way.
Above embodiment only in order to the technical solution of the utility model to be described, is not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technological scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment's technological scheme of the utility model.
Claims (10)
1. an impeller, is characterized in that, comprising:
Wheel disc and several blades be arranged on wheel disc and several anti-vortex ring;
Wheel disc side plate radius is greater than the radius of the cylindrical structure that described some blades surround;
Described anti-vortex ring is loop configuration, is arranged at the outer side wall of described cylindrical structure.
2. impeller according to claim 1, is characterized in that,
Half path length 5mm-10mm of cylindrical structure described in described wheel disc side plate radius ratio.
3. impeller according to claim 1, is characterized in that,
Described anti-vortex ring is arranged at 1/3rd places or 1/4th places of the outer side wall of described cylindrical structure.
4. impeller according to any one of claim 1 to 3, is characterized in that,
Described impeller also comprises the first impeller body and the second impeller body, and described first impeller body is relative with the wheel disc of described second impeller body, is connected by removably;
Blade on described first impeller body and described second impeller body upper blade are obliquely installed, and both V-shaped structures are staggered.
5. a centrifugal blower, is characterized in that, comprising:
Motor, spiral case and impeller;
Described motor and described impeller are accommodated in described spiral case;
Described motor is connected with described impeller, and drives described vane rotary;
Described impeller comprises:
Wheel disc, be arranged on some blades on wheel disc and several anti-vortex ring;
Wheel disc side plate radius is greater than the radius of the cylindrical structure that described some blades surround;
Described anti-vortex ring is loop configuration, is arranged at the outer side wall of described cylindrical structure.
6. centrifugal blower according to claim 5, is characterized in that,
Half path length 5mm-10mm of cylindrical structure described in described wheel disc side plate radius ratio.
7. centrifugal blower according to claim 5, is characterized in that,
Described anti-vortex ring is arranged at 1/3rd places or 1/4th places of the outer side wall of described cylindrical structure.
8. the centrifugal blower according to any one of claim 5 to 7, is characterized in that,
Described impeller also comprises the first impeller body and the second impeller body, and described first impeller body is relative with the wheel disc of described second impeller body, is connected by removably;
Blade on described first impeller body and described second impeller body upper blade are obliquely installed, and both V-shaped structures are staggered.
9. centrifugal blower according to claim 5, is characterized in that,
In described spiral case, vortex shield is set.
10. centrifugal blower according to claim 9, is characterized in that,
Described vortex shield is arranged at 1/3rd places or 1/4th places in described spiral case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420866464.6U CN204591781U (en) | 2014-12-30 | 2014-12-30 | A kind of impeller and centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420866464.6U CN204591781U (en) | 2014-12-30 | 2014-12-30 | A kind of impeller and centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204591781U true CN204591781U (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420866464.6U Expired - Fee Related CN204591781U (en) | 2014-12-30 | 2014-12-30 | A kind of impeller and centrifugal blower |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355397A (en) * | 2017-07-10 | 2017-11-17 | 加丁（天津）科技有限公司 | A kind of low noise centrifugal fan, air cleaning unit for being provided with noise-reducing acoustic liner |
| CN107701469A (en) * | 2017-10-23 | 2018-02-16 | 加丁（天津）科技有限公司 | A kind of centrifugal blower, air cleaning unit |
| CN108678995A (en) * | 2018-07-28 | 2018-10-19 | 宁波奥克斯电气股份有限公司 | A kind of centrifugal wind wheel and air-cooled ducted air conditioner |
| CN107355397B (en) * | 2017-07-10 | 2024-05-31 | 三羊(北京)文化有限公司 | Low-noise centrifugal ventilator with noise-reducing liner and air purifying device |
-
2014
- 2014-12-30 CN CN201420866464.6U patent/CN204591781U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355397A (en) * | 2017-07-10 | 2017-11-17 | 加丁（天津）科技有限公司 | A kind of low noise centrifugal fan, air cleaning unit for being provided with noise-reducing acoustic liner |
| CN107355397B (en) * | 2017-07-10 | 2024-05-31 | 三羊(北京)文化有限公司 | Low-noise centrifugal ventilator with noise-reducing liner and air purifying device |
| CN107701469A (en) * | 2017-10-23 | 2018-02-16 | 加丁（天津）科技有限公司 | A kind of centrifugal blower, air cleaning unit |
| CN108678995A (en) * | 2018-07-28 | 2018-10-19 | 宁波奥克斯电气股份有限公司 | A kind of centrifugal wind wheel and air-cooled ducted air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 528300 9 Daliang, five Shalong Shuncheng Road, Daliang, Shunde, Foshan, Guangdong Patentee after: Fanshida electromechanical Limited by Share Ltd Address before: 528300 two, Daliang Shuncheng South Road, five Daliang street, Shunde District, Foshan, Guangdong two Patentee before: FANS-TECH ELECTRIC CO., LTD. |
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| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20191230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |