CN209458179U - Semi-open type shunts small flow rate high pressure impeller of centrifugal fan - Google Patents
Semi-open type shunts small flow rate high pressure impeller of centrifugal fan Download PDFInfo
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- CN209458179U CN209458179U CN201821799776.4U CN201821799776U CN209458179U CN 209458179 U CN209458179 U CN 209458179U CN 201821799776 U CN201821799776 U CN 201821799776U CN 209458179 U CN209458179 U CN 209458179U
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Abstract
Semi-open type shunts small flow rate high pressure impeller of centrifugal fan, it is related to blower technical field, and in particular to a kind of semi-open type shunting small flow rate high pressure impeller of centrifugal fan.It includes streamlined linear leaf, outlet manifold short blade, impeller hub disk, semi-open type shroud, axle sleeve, the streamlined linear leaf is evenly distributed and is welded on impeller hub disk, streamlined linear leaf is divided into three sections, forward tilt inducer, bias type interlude and micro- backward tilt outlet section, the inlet angle of streamlined linear leaf is 43 °, the angle of outlet is 100 °, outlet manifold short blade is evenly distributed and is welded in the centre of the outlet flow of streamlined linear leaf, semi-open type shroud is double camber type, it is welded on the entrance of streamlined linear leaf, axle sleeve is located at the centre of semi-open type shroud.After adopting the above technical scheme, the utility model has the beneficial effect that it improves the operational efficiency of blower, noise and manufacture difficulty can reduce, it is ensured that the operational safety of blower.
Description
Technical field
The utility model relates to blower technical fields, and in particular to a kind of semi-open type shunting small flow high pressure centrifugal blower
Impeller.
Background technique
Blower is to improve gas pressure by the mechanical energy of input and supply gas side by side the machinery of body, it is a kind of driven stream
Body is mechanical.Blower is habit abbreviation of the China to gas compression and gas conveying machinery, and usually said blower includes ventilation
Machine, air blower, wind-driven generator.Blower is widely used in the logical of factory, mine, tunnel, cooling tower, vehicle, ship and building
The ventilation of wind, dust discharge and cooling, boiler and industrial furnace and air inducing；Cooling in the apparatus of air conditioning and domestic electric appliance
And ventilation；It the drying of cereal and selects and recommends, inflation and propulsion of wind-tunnel wind regime and aircushion vehicle etc..Blower is related to the transmission & distribution of system
Energy consumption is the very crucial part of building energy conservation.Aerator supervision shows that many blowers are problematic in that under declared working condition, because
This needs to require production and manufacture blower in strict accordance with product standard.Blower is mainly used in metallurgy, petrochemical industry, electric power, city
The ventilation of all fields of national economy such as rail traffic, weaving, ship and various places.In addition to traditional application field,
More than 20 potential cities such as gangue comprehensive utilization, the technological transformation of new dry process clinker, the energy conservation of metallurgical industry and comprehensive utilization of resources
Field field will have biggish development prospect.Small flow high pressure centrifugal blower is widely used in steel, building materials, chemical industry, power plant etc.
Large-scale power consumption industry, conventional blower are mostly forward tilt centrifugal blower, and representative small flow high pressure centrifugal blower has 8-09,
9-12,9-19 etc., these blowers are forward tilt, and are widely applied in the market.Since blade passage is forward tilt,
The disadvantages of blower boundary layer separation is big, and interior flow field is severe, therefore these blowers are all efficient low, noise is big, and these wind
Machine impeller is relatively narrow, and blower production welding difficulty is big, weldering is lacked among frequent impeller, there are some security risks.But existing market
On the draught fan impeller that generally uses, there are small flow high pressure low efficiency, noise is high, manufacture difficulty is big the problems such as.
Utility model content
The purpose of this utility model is that it is in view of the drawbacks of the prior art and insufficient, provide a kind of semi-open type shunting small stream
Rate high pressure impeller of centrifugal fan is measured, its streamlined linear leaf entrance is forward tilt, is exported after being micro-
To achieve the above object, the utility model is using following technical scheme: it includes streamlined linear leaf 1, leans forward
Formula inducer 11, bias type interlude 12, micro- backward tilt outlet section 13, outlet manifold short blade 2, impeller hub disk 3, semi-open type
Shroud 4, axle sleeve 5, the quantity of the streamlined linear leaf 1 is provided with 16, and 16 streamlined linear leafs 1 are average
Be distributed and be welded on impeller hub disk 3, it is three sections that streamlined linear leaf 1, which divides, respectively forward tilt inducer 11, in bias type
Between section 12 and micro- backward tilt outlet section 13, the inlet angle of streamlined linear leaf 1 is 43 °, and the angle of outlet is 100 °, outlet manifold
The quantity of short blade 2 is identical as the quantity of streamlined linear leaf 1, is 16, and the length of outlet manifold short blade 2 is streamline
The half of 1 length of type linear leaf, outlet manifold short blade 2 are evenly distributed and are welded in the outlet flow of streamlined linear leaf 1
Centre, semi-open type shroud 4 is arc line type, is welded on the forward tilt inducer 11 of streamlined linear leaf 1, and axle sleeve 5 is located at half
The centre of open type shroud 4.
The inlet diameter of the streamlined linear leaf 1 is 181mm, and the inlet diameter of outlet manifold short blade 2 is
400mm, the inlet diameter of semi-open type shroud 4 are 174mm, and the outlet diameter of semi-open type shroud 4 is 340mm, streamlined linear leaf
1 exit width is 14mm, and it is 34mm that the entrance of streamlined linear leaf 1, which is width,；The width of outlet manifold short blade 2 is 14mm.
The forward tilt inducer 11 connects semi-open type shroud 4 and impeller hub disk 3, is enclosed, bias type interlude 12
And micro- 13 connection impeller hub disks 3 of backward tilt outlet section, it is open type.
The inlet angle of the outlet manifold short blade 2 is 59 °, and the angle of outlet is 100 °.
Working principle of the utility model is: forward tilt inducer 11 connects semi-open type shroud 4 and impeller hub disk 3, to close
Formula, 13 connection impeller hub disks 3 of bias type interlude 12 and micro- backward tilt outlet section are open type, the structure shape of open type and enclosed
At the semi-open type structure of impeller, the big problem of manufacture difficulty of processing can solve, streamlined 1 entrance of linear leaf is to lean forward
Formula, it exports as micro- backward tilt, the stream of blower runner can be improved
After adopting the above technical scheme, the utility model has the beneficial effect that it can improve the flow field of blower runner spy
Sign improves fan efficiency, reduces aerodynamic noise；Outlet manifold short blade is arranged among linear leaf outlet flow, reduces blade
Pitch improves blower pressure, improves aerodynamic performance；Impeller is semi-open type, can solve that manufacture difficulty of processing is big to ask
Topic, the welding of shroud and blade can be fully welded, and improve fan operation strength character, it is ensured that operational safety.
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 implementation
Example or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is only some embodiments of the utility model, for those of ordinary skill in the art, in not making the creative labor property
Under the premise of, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the two-dimensional structure schematic diagram of the utility model；
Fig. 2 is the sectional view of the utility model；
Fig. 3 is the three-dimensional figure of the utility model；
Fig. 4 is the structural schematic diagram of streamlined linear leaf 1 in the utility model.
Description of symbols: streamlined linear leaf 1, forward tilt inducer 11, bias type interlude 12, micro- backward tilt go out
Mouth section 13, outlet manifold short blade 2, impeller hub disk 3, semi-open type shroud 4, axle sleeve 5.
Specific embodiment
Referring to shown in Fig. 1-Fig. 4, present embodiment is the technical solution adopted is that it includes streamlined linear leaf 1, goes out
Mouth shunts short blade 2, impeller hub disk 3, semi-open type shroud 4, axle sleeve 5, and the streamlined linear leaf 1 is foliaceous, inducer
For forward tilt, interlude is bias type, and outlet end is micro- backward tilt, and streamlined linear leaf 1 is evenly distributed and welds after the impeller
On disk 3, the quantity of outlet manifold short blade 2 is identical as the quantity of streamlined linear leaf 1, is 16, outlet manifold short blade
2 are evenly distributed and are welded in the centre of the outlet flow of streamlined linear leaf 1, outlet manifold short blade 2 and streamlined linear leaf
1 is interspersed, and the centre of semi-open type shroud 4 and impeller hub disk 3 is arranged in the inducer of streamlined linear leaf 1, is connected to half
Open type shroud 4 and impeller hub disk 3, are enclosed, and the interlude and outlet section of streamlined linear leaf 1 only connect impeller hub disk 3, be
Open type.The structure of open type and enclosed forms the semi-open type structure of impeller.Impeller refers to the wheel disc equipped with movable vane, is impulse
The component part of turbine rotor, and can be with the general name of finger wheel disk and the moving blade being installed on it.Impeller can be according to shape
And open closure situation and classify, generally there are two types of structures for half-opened impeller: one is preceding semi-open type, by back shroud and leaf
Piece composition, this structure impeller adiabatic efficiency is lower, to improve efficiency the sealing ring for needing adapted adjustable clearance；Another kind is rear semi-open type,
It is made of front shroud and blade, due to that can apply sealing ring identical with double shrouded wheel, efficiency is essentially identical with double shrouded wheel,
And blade is in addition to conveying liquid, also has (back blade or accessory impeller) sealing function.Half-opened impeller is suitable for conveying and contains
The liquid of the suspended matters such as solid particle, fiber.Half-opened impeller manufacture difficulty is smaller, and cost is relatively low, and adaptable, is refining
It applies in oiling work centrifugal pump and gradually increases, and the liquid for conveying clear water and approximate clear water.It can solve manufacture processing
The big problem of difficulty.Impeller surface is coated with wear-preventing paint mesh, and main wear-preventing paint has resin resistant wear-resistant paint, and rubber is anti-
Rotten wear-resistant paint, quartz plus waterglass and ceramic corrosion-proof wear-resistant material etc., can be improved the surface quality of draught fan impeller.It is half-open
Formula shroud 4 is welded on the inducer of streamlined linear leaf 1, and axle sleeve 5 is located at the centre of semi-open type shroud 4.Axle sleeve 5 is to cover
Tubular machine components in shaft are a component parts of sliding bearing.In general, axle sleeve 5 and bearing block use interference
Cooperation, and be gap-matched with axis.Semi-open type shroud 4 is arc line type, can improve the flow field characteristic of fans entrance.Blower
Effective outlet diameter of impeller is 670mm, and draught fan impeller height is 40mm.Streamlined linear leaf 1, outlet manifold short blade 2,
The specification of the components such as impeller hub disk 3 and semi-open type shroud 4 is suitable, can play the maximum efficiency of draught fan impeller, improve blower
Efficiency reduces noise, improves the aeroperformance of blower.The inlet angle of outlet manifold short blade 2 is 59 °, and the angle of outlet is
100°.Angle is suitable, can be improved fan operation strength character, it is ensured that operational safety, fan blade are wind-driven generators
One of core component accounts for about the 15%-20% of blower totle drilling cost, it design quality by the performance for being directly related to blower with
And benefit, the three stage structure of streamlined linear leaf 1, the Field Characteristics of blower runner can be improved, improve fan efficiency, drop
Low pneumatic noise, the inlet diameter of streamlined linear leaf 1 are 181mm, and the inlet diameter of outlet manifold short blade 2 is 400mm,
The inlet diameter of semi-open type shroud 4 is 174mm, and the outlet diameter of semi-open type shroud 4 is 340mm, and streamlined linear leaf 1 exports
Width is 14mm, and it is 34mm that the entrance of streamlined linear leaf 1, which is width,；The width of outlet manifold short blade 2 is 14mm, outlet
Tangential blade space can be reduced by shunting short blade 2, improve blower pressure.
Working principle of the utility model is: the semi-open type structure of impeller, can solve the big problem of manufacture difficulty of processing,
Streamlined 1 entrance of linear leaf is forward tilt, exports as micro- backward tilt, can improve the Field Characteristics of blower runner, mention
High fan efficiency reduces aerodynamic noise, and outlet manifold short blade 2 is arranged among streamlined 1 outlet flow of linear leaf, reduces
Tangential blade space improves blower pressure, breaks " jet-wake " structure, improves blower pressure, and improving aerodynamic performance ensures
Operational safety.
After adopting the above technical scheme, the utility model has the beneficial effect that it can improve the flow field of blower runner spy
Sign improves fan efficiency, reduces aerodynamic noise；Outlet manifold short blade is arranged among linear leaf outlet flow, reduces blade
Pitch improves blower pressure, improves aerodynamic performance；Impeller is semi-open type, can solve that manufacture difficulty of processing is big to ask
Topic, the welding of shroud and blade can be fully welded, and improve fan operation strength character, it is ensured that operational safety.
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 (4)
1. semi-open type shunts small flow rate high pressure impeller of centrifugal fan, it is characterised in that: it includes streamlined linear leaf (1), leans forward
Formula inducer (11), bias type interlude (12), micro- backward tilt outlet section (13), outlet manifold short blade (2), impeller hub disk
(3), semi-open type shroud (4), axle sleeve (5), the quantity of the streamlined linear leaf (1) are provided with 16, and 16 streams
Line style linear leaf (1) is evenly distributed and is welded on impeller hub disk (3), and streamlined linear leaf (1) is divided into three sections, respectively leans forward
The inlet angle of formula inducer (11), bias type interlude (12) and micro- backward tilt outlet section (13), streamlined linear leaf (1) is
43 °, the angle of outlet is 100 °, and the quantity of outlet manifold short blade (2) is identical as the quantity of streamlined linear leaf (1), is 16,
The length of outlet manifold short blade (2) is the half of streamlined linear leaf (1) length, and outlet manifold short blade (2) is evenly distributed
And it is welded in the centre of the outlet flow of streamlined linear leaf (1), semi-open type shroud (4) is arc line type, is welded on streamlined length
On the forward tilt inducer (11) of blade (1), axle sleeve (5) is located at the centre of semi-open type shroud (4).
2. semi-open type according to claim 1 shunts small flow rate high pressure impeller of centrifugal fan, it is characterised in that: the stream
The inlet diameter of line style linear leaf (1) is 181mm, and the inlet diameter of outlet manifold short blade (2) is 400mm, semi-open type shroud
(4) inlet diameter is 174mm, and the outlet diameter of semi-open type shroud (4) is 340mm, and streamlined linear leaf (1) exit width is
14mm, it is 34mm that the entrance of streamlined linear leaf (1), which is width,；The width of outlet manifold short blade (2) is 14mm.
3. semi-open type according to claim 1 shunts small flow rate high pressure impeller of centrifugal fan, it is characterised in that: before described
Formula of inclining inducer (11) connects semi-open type shroud (4) and impeller hub disk (3), is enclosed, bias type interlude (12) and micro- hypsokinesis
Formula outlet section (13) only connects impeller hub disk (3), is open type.
4. semi-open type according to claim 1 shunts small flow rate high pressure impeller of centrifugal fan, it is characterised in that: described goes out
The inlet angle that mouth shunts short blade (2) is 59 °, and the angle of outlet is 100 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821799776.4U CN209458179U (en) | 2018-11-02 | 2018-11-02 | Semi-open type shunts small flow rate high pressure impeller of centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821799776.4U CN209458179U (en) | 2018-11-02 | 2018-11-02 | Semi-open type shunts small flow rate high pressure impeller of centrifugal fan |
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| Publication Number | Publication Date |
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| CN209458179U true CN209458179U (en) | 2019-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821799776.4U Active CN209458179U (en) | 2018-11-02 | 2018-11-02 | Semi-open type shunts small flow rate high pressure impeller of centrifugal fan |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762050A (en) * | 2019-12-18 | 2020-02-07 | 浙江兴益风机电器有限公司 | Centrifugal fan impeller |
| CN111140536A (en) * | 2018-11-02 | 2020-05-12 | 河北众邦节能科技服务有限公司 | Semi-open type shunting small-flow high-pressure centrifugal fan impeller |
| CN116292394A (en) * | 2023-05-11 | 2023-06-23 | 佛山市南海九洲普惠风机有限公司 | Retroverted centrifugal impeller with long and short composite blades |
-
2018
- 2018-11-02 CN CN201821799776.4U patent/CN209458179U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140536A (en) * | 2018-11-02 | 2020-05-12 | 河北众邦节能科技服务有限公司 | Semi-open type shunting small-flow high-pressure centrifugal fan impeller |
| CN110762050A (en) * | 2019-12-18 | 2020-02-07 | 浙江兴益风机电器有限公司 | Centrifugal fan impeller |
| CN116292394A (en) * | 2023-05-11 | 2023-06-23 | 佛山市南海九洲普惠风机有限公司 | Retroverted centrifugal impeller with long and short composite blades |
| CN116292394B (en) * | 2023-05-11 | 2023-07-18 | 佛山市南海九洲普惠风机有限公司 | Retroverted centrifugal impeller with long and short composite blades |
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