CN209041171U - A kind of centrifugal impeller of double split flow blade - Google Patents
A kind of centrifugal impeller of double split flow blade Download PDFInfo
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- CN209041171U CN209041171U CN201821639882.6U CN201821639882U CN209041171U CN 209041171 U CN209041171 U CN 209041171U CN 201821639882 U CN201821639882 U CN 201821639882U CN 209041171 U CN209041171 U CN 209041171U
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- splitterr vanes
- impeller
- primary blades
- split flow
- double split
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- 238000009827 uniform distribution Methods 0.000 claims abstract 2
- 238000003466 welding Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 abstract description 11
- 230000000903 blocking effect Effects 0.000 abstract description 9
- 238000005119 centrifugation Methods 0.000 description 6
- 238000009423 ventilation Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
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Abstract
A kind of centrifugal impeller of double split flow blade, it is related to turbomachine and centrifugal fan technical field.It is made of impeller front disc, impeller hub disk, primary blades, the first splitterr vanes and the second splitterr vanes, multiple primary blades are provided between the impeller front disc and impeller hub disk, continuous uniform distribution annular in shape, air outlet is formed between adjacent primary blade, the first splitterr vanes and the second splitterr vanes are provided between per two adjacent primary blades, suction surface of first splitterr vanes close to primary blades, pressure face of second splitterr vanes close to primary blades.The utility model has the advantages that improving impeller internal flow distribution, raising operational efficiency reduces noise, reduces the blocking at impeller eye, guarantees the flow area of impeller internal the utility model, weakens impeller and flows to interior Secondary Flow, avoids the blocking of runner.
Description
Technical field
The utility model relates to turbomachine and centrifugal fan technical fields, and in particular to a kind of double split flow blade
Centrifugal impeller.
Background technique
It is centrifugal fan that centrifugal impeller can be said again, refers to gas by the leaf road axially into rotation, by the work of blade
It with flowing radially out, is done work using centrifugal force (depending on revolving speed and outer diameter), converts pressure energy and kinetic energy for the mechanical energy of impeller
A kind of turbomachine.The application range of centrifugal fan is very extensive, in boiler draft and air inducing, primary air fan, and secondary air fan,
Ferrous Metallurgy, weaving forging and the application of room ventilation Deng Gong China Democratic National Construction Association field centrifugation reduction of fractions to a common denominator blower are wider, and are adjusted according to research
Centrifugal fan electricity consumption accounts for about national electricity consumption 10% is looked into, the electricity consumption of centrifugal fan accounts for about the 80% of blower total power consumption
Left and right.At present centrifugation reduction of fractions to a common denominator blower on the market due to internal Flow Field Distribution it is relatively complicated, including " tail-jet stream ",
Phenomena such as vortex, boundary layer separation, this to cause centrifugal fan low efficiency, and noise is higher.With the development of economic society
Country is also higher and higher higher for the efficiency and noise requirements of centrifugal fan, therefore optimizes centrifugal fan performance, improves
Operational efficiency, the noise for reducing blower have great importance.
Utility model content
The purpose of this utility model is that it is in view of the drawbacks of the prior art and insufficient, a kind of centrifugation of double split flow blade is provided
Impeller can be effectively improved impeller internal flow distribution, improve operational efficiency, reduce noise, reduce the blocking at impeller eye,
Guarantee the flow area of impeller internal, weakens impeller and flow to interior Secondary Flow, avoid the blocking of runner.
To achieve the above object, the utility model is using following technical scheme: it by impeller front disc 5, impeller hub disk 4,
Primary blades 1, the first splitterr vanes 2 and the second splitterr vanes 3 form, and are provided between the impeller front disc 5 and impeller hub disk 4 more
A primary blades 1, continuous uniform annular in shape are distributed, formation air outlet 6 between adjacent blades, between every two adjacent primary blades 1
The first splitterr vanes 2 and the second splitterr vanes 3 are provided with, close to the suction surface of primary blades 1, second shunts the first splitterr vanes 2
Pressure face of the blade 3 close to primary blades 1.
First splitterr vanes 2 and the second splitterr vanes 3 are arranged between two primary blades 1, and continuous uniform is arranged.
First splitterr vanes 2, the second splitterr vanes 3 are directly truncation blade, and the first splitterr vanes 2, second
The thickness of splitterr vanes 3 is gradually reduced by leading edge to rear.
First splitterr vanes 2, the second splitterr vanes 3 radical length be respectively less than 1 length of primary blades.
The ratio of first splitterr vanes 2 and 1 radical length of primary blades is 0.2, the second splitterr vanes 3 and primary blades 1
The ratio of radical length is 0.4.
First splitterr vanes 2, the second splitterr vanes 3 and primary blades 1 are mounted on impeller front disc 5 and leaf by welding
It takes turns between hub disk 4.
The number of the primary blades (1) is 8-12.
Working principle of the utility model is: gas is radially flowed by the leaf road axially into rotation by the effect of blade
Out, it is done work using centrifugal force (depending on revolving speed and outer diameter), pressure energy and kinetic energy is converted by the mechanical energy of impeller, by adjacent master
First splitterr vanes 2 are set between blade 1, the second splitterr vanes 3 make 1 pressure of primary blades inside Centrifugal Fan Impeller
The vortex formed between face and suction surface is divided into several small vortexs, improves the flow field inside centrifugal fan to greatest extent
Distribution, and reduce the blocking at impeller eye, and ensure that the flow area of impeller internal, to reduce centrifugation ventilation
The noise of machine improves the working efficiency of centrifugal fan.
After adopting the above technical scheme, the utility model has the beneficial effect that the setting double split flow blade in impeller, so that
Primary blades pressure face inside Centrifugal Fan Impeller and the vortex formed between suction surface are divided into several small vortexs, improve
" tail-jet stream " of centrifugal fan interior flow field distribution and impeller outlet, improves operational efficiency, reduces centrifugation ventilation
The noise of machine, and double split flow blade reduces the bearing capacity of primary blades.Double split flow blade is arranged in impeller can reduce impeller
The blocking of inlet, and also ensure that the flow area in impeller to greatest extent.Furthermore setting double split flow blade can subtract
Secondary Flow in weak impeller channel prevents and treats tail in impeller and forms the blocking for also avoiding runner too early.Double split flow blade is set
The situation of runner flow field distribution difference between primary blades suction surface and single splitterr vanes pressure face can also be improved.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structure three-dimensional figure of the utility model；
Fig. 2 is the distribution schematic diagram of primary blades 1 and the first splitterr vanes 2, the second splitterr vanes 3 in the utility model；
Fig. 3 is the utility model primary blades 1 and the first splitterr vanes 2,3 radical length distribution map of the second splitterr vanes；
Fig. 4 is the structural schematic diagram of the first splitterr vanes 2 in the utility model, the second splitterr vanes 3.
Description of symbols: primary blades 1, the first splitterr vanes 2, the second splitterr vanes 3, impeller hub disk 4, impeller front disc 5,
Ventilation opening 6.
Specific embodiment
Referring to shown in Fig. 1-Fig. 4, present embodiment the technical solution adopted is that: it is by impeller front disc 5, impeller hub disk
4, primary blades 1, the first splitterr vanes 2 and the second splitterr vanes 3 form, and are provided between the impeller front disc 5 and impeller hub disk 4
Multiple primary blades 1, continuous uniform annular in shape distribution form air outlet 6 between adjacent blades, per two adjacent primary blades 1 it
Between be provided with the first splitterr vanes 2 and the second splitterr vanes 3, the first splitterr vanes 2 close to primary blades 1 suction surface, second point
Blade 3 is flowed close to the pressure face of primary blades 1.
First splitterr vanes 2 and the second splitterr vanes 3 are arranged between two primary blades 1, and continuous uniform is arranged.
First splitterr vanes 2, the second splitterr vanes 3 are directly truncation blade, and the first splitterr vanes 2, second
The thickness of splitterr vanes 3 is gradually reduced by leading edge to rear.
First splitterr vanes 2, the second splitterr vanes 3 radical length be respectively less than 1 length of primary blades.
The ratio of first splitterr vanes 2 and 1 radical length of primary blades is 0.2, the second splitterr vanes 3 and primary blades 1
The ratio of radical length is 0.4.
First splitterr vanes 2, the second splitterr vanes 3 and primary blades 1 are mounted on impeller front disc 5 and leaf by welding
It takes turns between hub disk 4.
The number of the primary blades 1 is 8-12.
After adopting the above technical scheme, the utility model has the beneficial effect that the setting double split flow blade in impeller, so that
Primary blades pressure face inside Centrifugal Fan Impeller and the vortex formed between suction surface are divided into several small vortexs, improve
" tail-jet stream " of centrifugal fan interior flow field distribution and impeller outlet, improves operational efficiency, reduces centrifugation ventilation
The noise of machine, and double split flow blade reduces the bearing capacity of primary blades.Double split flow blade is arranged in impeller can reduce impeller
The blocking of inlet, and also ensure that the flow area in impeller to greatest extent.Furthermore setting double split flow blade can subtract
Secondary Flow in weak impeller channel prevents and treats tail in impeller and forms the blocking for also avoiding runner too early.Double split flow blade is set
The situation of runner flow field distribution difference between primary blades suction surface and single splitterr vanes pressure face can also be improved.
The above is merely intended for describing the technical solutions of the present application, but not for limiting the present application, those of ordinary skill in the art couple
The other modifications or equivalent replacement that the technical solution of the utility model is made, without departing from technical solutions of the utility model
Spirit and scope should all cover in the scope of the claims of the utility model.
Claims (7)
1. a kind of centrifugal impeller of double split flow blade, it is characterised in that: it is by impeller front disc (5), impeller hub disk (4), primary blades
(1), the first splitterr vanes (2) and the second splitterr vanes (3) form, and are arranged between the impeller front disc (5) and impeller hub disk (4)
Have multiple primary blades (1), continuous uniform distribution annular in shape, air outlet (6) is formed between adjacent primary blade (1), per adjacent two
The first splitterr vanes (2) and the second splitterr vanes (3) are provided between a primary blades (1), the first splitterr vanes (2) are close to main lobe
The suction surface of piece (1), pressure face of the second splitterr vanes (3) close to primary blades (1).
2. a kind of centrifugal impeller of double split flow blade according to claim 1, it is characterised in that: first splitterr vanes
(2) it is arranged between two primary blades (1) with the second splitterr vanes (3), and continuous uniform is arranged.
3. a kind of centrifugal impeller of double split flow blade according to claim 1, it is characterised in that: first splitterr vanes
(2), the second splitterr vanes (3) are direct truncation blade, and the thickness of the first splitterr vanes (2), the second splitterr vanes (3) is equal
It is gradually reduced by leading edge to rear.
4. a kind of centrifugal impeller of double split flow blade according to claim 1, it is characterised in that: first splitterr vanes
(2), the radical length of the second splitterr vanes (3) is respectively less than primary blades (1) length.
5. a kind of centrifugal impeller of double split flow blade according to claim 1, it is characterised in that: first splitterr vanes
It (2) is 0.2 with the ratio of primary blades (1) radical length, the second splitterr vanes (3) and the ratio of primary blades (1) radical length are
0.4。
6. a kind of centrifugal impeller of double split flow blade according to claim 1, it is characterised in that: first splitterr vanes
(2), the second splitterr vanes (3) and primary blades (1) are mounted between impeller front disc (5) and impeller hub disk (4) by welding.
7. a kind of centrifugal impeller of double split flow blade according to claim 1, it is characterised in that: the primary blades (1)
Number is 8-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821639882.6U CN209041171U (en) | 2018-10-10 | 2018-10-10 | A kind of centrifugal impeller of double split flow blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821639882.6U CN209041171U (en) | 2018-10-10 | 2018-10-10 | A kind of centrifugal impeller of double split flow blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209041171U true CN209041171U (en) | 2019-06-28 |
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ID=67035401
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821639882.6U Active CN209041171U (en) | 2018-10-10 | 2018-10-10 | A kind of centrifugal impeller of double split flow blade |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828375A (en) * | 2020-06-30 | 2020-10-27 | 中国航发南方工业有限公司 | Split-flow centrifugal impeller and aircraft engine with same |
| CN112196832A (en) * | 2020-10-26 | 2021-01-08 | 江苏大学 | Guide vane body with flow distribution sheet |
-
2018
- 2018-10-10 CN CN201821639882.6U patent/CN209041171U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828375A (en) * | 2020-06-30 | 2020-10-27 | 中国航发南方工业有限公司 | Split-flow centrifugal impeller and aircraft engine with same |
| CN112196832A (en) * | 2020-10-26 | 2021-01-08 | 江苏大学 | Guide vane body with flow distribution sheet |
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