CN103277326A - Multi-vane fan - Google Patents

Multi-vane fan Download PDF

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Publication number
CN103277326A
CN103277326A CN2013102210090A CN201310221009A CN103277326A CN 103277326 A CN103277326 A CN 103277326A CN 2013102210090 A CN2013102210090 A CN 2013102210090A CN 201310221009 A CN201310221009 A CN 201310221009A CN 103277326 A CN103277326 A CN 103277326A
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Prior art keywords
airfoil type
blade
type impeller
spiral case
airfoil
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CN2013102210090A
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Inventor
郭波
马万柏
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SHANGHAI BUWEI HEAVY MACHINERY CO Ltd
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SHANGHAI BUWEI HEAVY MACHINERY CO Ltd
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Priority to CN2013102210090A priority Critical patent/CN103277326A/en
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Abstract

The invention relates to a multi-vane fan and belongs to the technical field of engineering machinery. The multi-vane fan comprises a motor, a volute, a multi-vane impeller and a cover plate, the multi-vane impeller is connected to an output shaft of the motor, is arranged between the volute and the cover plate and comprises a back plate and a plurality of vanes arranged on one side face of the back plate, the vanes include long vanes and short vanes, and the long vanes and the short vanes are the same in quantity and are arranged at intervals. The multi-vane fan has the advantages that air pressure can be effectively increased, and working efficiency of the fan is improved; the multi-vane impeller of the multi-vane fan is higher in precision, better in dynamic balance and less in vibration; the centrifugal volute can be completely free of whir when air volume is low, so that noise is reduced; and the multi-vane fan is simple in structure and quite low in cost.

Description

The multiple-airfoil type ventilator
Technical field
The present invention relates to technical field of engineering machinery, particularly the blower fan technical field specifically refers to a kind of multiple-airfoil type ventilator.
Background technique
Nowadays, need use a kind of high pressure (1200pa), low discharge (300m in large-scale compressor (700KW and more than) field 3/ h) blower fan be used for to be removed greasy dirt, is difficult to find the blower fan that can satisfy this type of working condition requirement in the market.Simultaneously, some can produce the blower fan of high pressure, because there is the energy consumption height in its structural problem, the problem that noise is big.
Therefore, provide a kind of designing requirement that reaches the high pressure low discharge on performance fully, simultaneously effective fan efficiency reduces noise and energy consumption and becomes problem demanding prompt solution in this technical field.
Summary of the invention
The objective of the invention is to have overcome above-mentioned shortcoming of the prior art, a kind of wind pressure height that goes out is provided, flow is low, can satisfy the need of work that large-scale compressor degreases fully, and effectively reduce operating noise and energy consumption, promote working efficiency, and simple in structure, cost is cheap relatively multiple-airfoil type ventilator also.
In order to realize above-mentioned purpose, multiple-airfoil type ventilator of the present invention has following formation:
This multiple-airfoil type ventilator comprises motor, spiral case, multiple-airfoil type impeller and cover plate, and described multiple-airfoil type impeller shaft is connected to the output shaft of described motor, and this multiple-airfoil type impeller is arranged between described spiral case and the cover plate.Described multiple-airfoil type impeller comprises backboard and a plurality of blades that are arranged at this side of backboard, and described a plurality of blades comprise linear leaf and the short blade that quantity equates, described linear leaf and short blade arrange at interval.
In this multiple-airfoil type ventilator, described multiple-airfoil type impeller is cast aluminum impellers.
In this multiple-airfoil type ventilator, the quantitative range of described blade is 18 to 64.
In this multiple-airfoil type ventilator, described blade is arc shaped blade, the blade radius of arc R of described arc shaped blade kFor:
R k = 2 4 ( D 2 - D 1 ) ,
Wherein, D 1For with on two linear leafs of multiple-airfoil type impeller axle center symmetry near the distance between described multiple-airfoil type impeller axle center one end, i.e. internal diameter blade; D 2For with on two linear leafs of multiple-airfoil type impeller axle center symmetry away from the distance between an end in described multiple-airfoil type impeller axle center, i.e. blade external diameter.
In this multiple-airfoil type ventilator, described each interlobate spacing is leaf grating t, and the scope of described leaf grating t is: 0.7R kTo 1R k
In this multiple-airfoil type ventilator, described each linear leaf and short blade all are arranged at the outward edge position of described backboard away from multiple-airfoil type impeller axle center one end, described linear leaf and adjacent short blade are away from the spacing between one end position of described multiple-airfoil type impeller axle center, leaf grating t 1, more than or equal to the spacing of adjacent two linear leafs between one end position of close described multiple-airfoil type impeller axle center, leaf grating t 2, i.e. t 1〉=t 2
In this multiple-airfoil type ventilator, the quantity Z of described blade is:
Z = π D 2 t .
In this multiple-airfoil type ventilator, described spiral case is centrifugal spiral case, the air guide channel that described centrifugal spiral case has exhaust outlet and is communicated with this exhaust outlet, when this air guide channel is arranged at the multiple-airfoil type wheel rotation on the path of process.
In this multiple-airfoil type ventilator, described air guide channel comprises head end and the tail end of connection, described tail end is communicated with described exhaust outlet, and described head end is positioned at described centrifugal spiral case away from the position of described exhaust outlet, and the section area of described head end is less than the section area of described tail end.
In this multiple-airfoil type ventilator, described multiple-airfoil type impeller is connected with screw by screw thread with the output shaft of described motor, is coated with screw thread glue in the described screw thread; Be provided with sealer between described spiral case and the cover plate.
Adopted the multiple-airfoil type ventilator of this invention, because its multiple-airfoil type impeller comprises backboard and a plurality of blades that are arranged at this side of backboard, described a plurality of blades comprise linear leaf and the short blade that quantity equates, described linear leaf and short blade arrange at interval.Thereby can effectively increase blast, improve the working efficiency of ventilator, the precision of its multiple-airfoil type impeller is higher simultaneously, dynamic balancing is better, vibrates forr a short time, and centrifugal spiral case can be removed the howling under the low air quantity situation fully, reduce noise, and multiple-airfoil type ventilator of the present invention, it is simple in structure, and cost is also quite cheap.
Description of drawings
Fig. 1 is the fractionation structural representation of multiple-airfoil type ventilator of the present invention.
Fig. 2 is the structural representation of the multiple-airfoil type impeller in the multiple-airfoil type ventilator of the present invention.
Fig. 3 is the structural representation of the spiral case in the multiple-airfoil type ventilator of the present invention.
Embodiment
In order more to be expressly understood technology contents of the present invention, describe in detail especially exemplified by following examples.
See also shown in Figure 1ly, be the fractionation structural representation of multiple-airfoil type ventilator of the present invention.
In one embodiment, this multiple-airfoil type ventilator comprises motor 1, spiral case 2, multiple-airfoil type impeller 3 and cover plate 4, and described multiple-airfoil type impeller 3 is coupling in the output shaft of described motor 1, and this multiple-airfoil type impeller 3 is arranged between described spiral case 2 and the cover plate 4.Wherein said multiple-airfoil type impeller 3 as shown in Figure 2, comprises backboard 31 and a plurality of blades 32 that are arranged at this side of backboard, and described a plurality of blades 32 comprise linear leaf and the short blade that quantity equates, described linear leaf and short blade arrange at interval.This multiple-airfoil type impeller 3 can be cast aluminum impellers, and the quantity of the blade 32 on the impeller 3 can be set to 18 to 64 according to different application needs.Multiple-airfoil type impeller 3 is connected with screw by screw thread with the output shaft of described motor 1, is coated with screw thread glue in the described screw thread; Be provided with sealer between described spiral case 2 and the cover plate 4, to guarantee the overall tightness of multiple-airfoil type ventilator of the present invention.
In a kind of more preferably mode of execution, as shown in Figure 2, described blade 32 is arc shaped blade, the blade radius of arc R of described arc shaped blade 32 kFor:
Figure BDA00003301773100031
Wherein, D 1For with on two linear leafs of multiple-airfoil type impeller axle center symmetry near the distance between described multiple-airfoil type impeller axle center one end, i.e. internal diameter blade; D 2For with on two linear leafs of multiple-airfoil type impeller axle center symmetry away from the distance between an end in described multiple-airfoil type impeller axle center, i.e. blade external diameter.The spacing that described each blade is 32 is leaf grating t, and the scope of described leaf grating t is: 0.7R kTo 1R k
In a kind of further preferred embodiment, described each linear leaf and short blade all are arranged at the outward edge position of described backboard 31 away from multiple-airfoil type impeller axle center one end, described linear leaf and adjacent short blade are away from the spacing between one end position of described multiple-airfoil type impeller axle center, leaf grating t 1, more than or equal to the spacing of adjacent two linear leafs between one end position of close described multiple-airfoil type impeller axle center, leaf grating t 2, i.e. t 1〉=t 2The quantity Z of described blade is:
Figure BDA00003301773100032
In preferred mode of execution, as shown in Figure 3, described spiral case 2 is centrifugal spiral case, the air guide channel 22 that described centrifugal spiral case 2 has exhaust outlet 21 and is communicated with this exhaust outlet 21, this air guide channel 22 be arranged at multiple-airfoil type impeller 3 when rotating on the path of process.Described air guide channel 22 comprises head end and the tail end of connection, described tail end is communicated with described exhaust outlet 21, described head end is positioned at described centrifugal spiral case 2 away from the position of described exhaust outlet 21, and the section area of described head end is less than the section area of described tail end.
In actual applications, the other products of selling on the impeller of multiple-airfoil type ventilator of the present invention and the market is compared, and has increased by 12 short blades in 12 linear leafs, and 12 length of a film length of blade equate that 12 short blade length also equate.Thereby flow and the pressure of appointment have been obtained.And the leaf grating of deviated splitter vane equates.
Adopt the characteristics of this multiple-airfoil type impeller to be: (D1/D2) is bigger for impeller diameter ratio, the number of blade many (can adopt 24 to 64), and all be the forward direction blade.Its outstanding advantage is: flow coefficient is big, the pressure coefficient height, and Size factor is little.
Simultaneously, multiple-airfoil type ventilator of the present invention adopts centrifugal spiral case and this impeller coupling.After adopting centrifugal spiral case, compared to common spiral case, its Flow area reduces, and runner is more suitable for the part air quantity and refluxes, and under low air quantity, has avoided the air-flow howling that causes parital vacuum to cause because of deficiency in draught.
Multiple-airfoil type ventilator of the present invention has the following advantages generally:
1, impeller adopts multiple-airfoil type, and this compares with common blower fan, increases efficient, increases blast, reduces noise.
2, impeller adopts extrusion process, compares with common sand casting, and precision is higher, and dynamic balancing is better, vibrates littler.
3, the spiral case employing is centrifugal, with the spiral case comparison of common blower fan, can remove the howling under the low air quantity fully;
4, all processing technologys all adopt numerical control machining center, guarantee machining accuracy;
5, according to client's practice, improved the assembly technology of blower fan, make blower fan more reliable, be in particular in:
A, fixedly the screw thread of impeller smears screw thread glue;
B, fixedly the screw of spiral case adopts locking nut, prevents the vibration of original equipment and makes screw loosening;
C, spiral case and end cap fine finishing smear sealer later on again, can accomplish the blower fan zero leakage.
Adopted the multiple-airfoil type ventilator of this invention, because its multiple-airfoil type impeller comprises backboard and a plurality of blades that are arranged at this side of backboard, described a plurality of blades comprise linear leaf and the short blade that quantity equates, described linear leaf and short blade arrange at interval.Thereby can effectively increase blast, improve the working efficiency of ventilator, the precision of its multiple-airfoil type impeller is higher simultaneously, dynamic balancing is better, vibrates forr a short time, and centrifugal spiral case can be removed the howling under the low air quantity situation fully, reduce noise, and multiple-airfoil type ventilator of the present invention, it is simple in structure, and cost is also quite cheap.
In this specification, the present invention is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.

Claims (10)

1. multiple-airfoil type ventilator, comprise motor, spiral case, multiple-airfoil type impeller and cover plate, described multiple-airfoil type impeller shaft is connected to the output shaft of described motor, and this multiple-airfoil type impeller is arranged between described spiral case and the cover plate, it is characterized in that, described multiple-airfoil type impeller comprises backboard and a plurality of blades that are arranged at this side of backboard, and described a plurality of blades comprise linear leaf and the short blade that quantity equates, described linear leaf and short blade arrange at interval.
2. multiple-airfoil type ventilator according to claim 1 is characterized in that, described multiple-airfoil type impeller is cast aluminum impellers.
3. multiple-airfoil type ventilator according to claim 1 is characterized in that, the quantitative range of described blade is 18 to 64.
4. multiple-airfoil type ventilator according to claim 1 is characterized in that, described blade is arc shaped blade, the blade radius of arc R of described arc shaped blade kFor:
R k = 2 4 ( D 2 - D 1 ) ,
Wherein, D 1For with on two linear leafs of multiple-airfoil type impeller axle center symmetry near the distance between described multiple-airfoil type impeller axle center one end, i.e. internal diameter blade; D 2For with on two linear leafs of multiple-airfoil type impeller axle center symmetry away from the distance between an end in described multiple-airfoil type impeller axle center, i.e. blade external diameter.
5. multiple-airfoil type ventilator according to claim 4 is characterized in that, described each interlobate spacing is leaf grating t, and the scope of described leaf grating t is: 0.7R kTo 1R k
6. multiple-airfoil type ventilator according to claim 5, it is characterized in that, described each linear leaf and short blade all are arranged at the outward edge position of described backboard away from multiple-airfoil type impeller axle center one end, described linear leaf and adjacent short blade are away from the spacing between one end position of described multiple-airfoil type impeller axle center, leaf grating t 1, more than or equal to the spacing of adjacent two linear leafs between one end position of close described multiple-airfoil type impeller axle center, leaf grating t 2, i.e. t 1〉=t 2
7. multiple-airfoil type ventilator according to claim 5 is characterized in that, the quantity Z of described blade is:
Z = π D 2 t .
8. multiple-airfoil type ventilator according to claim 1, it is characterized in that, described spiral case is centrifugal spiral case, the air guide channel that described centrifugal spiral case has exhaust outlet and is communicated with this exhaust outlet, when this air guide channel is arranged at the multiple-airfoil type wheel rotation on the path of process.
9. multiple-airfoil type ventilator according to claim 8, it is characterized in that, described air guide channel comprises head end and the tail end of connection, described tail end is communicated with described exhaust outlet, described head end is positioned at described centrifugal spiral case away from the position of described exhaust outlet, and the section area of described head end is less than the section area of described tail end.
10. according to each described multiple-airfoil type ventilator in the claim 1 to 9, it is characterized in that described multiple-airfoil type impeller is connected with screw by screw thread with the output shaft of described motor, is coated with screw thread glue in the described screw thread; Be provided with sealer between described spiral case and the cover plate.
CN2013102210090A 2013-06-04 2013-06-04 Multi-vane fan Pending CN103277326A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103486078A (en) * 2013-10-23 2014-01-01 株洲联诚集团有限责任公司 Bidirectional diffusion centrifugal fan
CN105402143A (en) * 2014-09-08 2016-03-16 雷勃美国公司 Electrical machine and method of assembling same
CN107014048A (en) * 2017-06-01 2017-08-04 上海寻妙智能科技有限公司 Fan air duct system and the air cleaner including it
CN107246398A (en) * 2017-06-05 2017-10-13 梁世欢 Double air channel blower fans
CN108105151A (en) * 2018-01-29 2018-06-01 西安大康环保科技有限责任公司 A kind of fresh air air cleaner ultra-silent energy-saving wind turbine
CN108425882A (en) * 2018-05-31 2018-08-21 陈靖 A kind of electric hair dryer fan blade

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CN203384065U (en) * 2013-06-04 2014-01-08 上海布威重工机械有限公司 Multi-vane fan

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103486078A (en) * 2013-10-23 2014-01-01 株洲联诚集团有限责任公司 Bidirectional diffusion centrifugal fan
CN105402143A (en) * 2014-09-08 2016-03-16 雷勃美国公司 Electrical machine and method of assembling same
CN105402143B (en) * 2014-09-08 2019-06-28 雷勃美国公司 Motor and its assemble method
CN107014048A (en) * 2017-06-01 2017-08-04 上海寻妙智能科技有限公司 Fan air duct system and the air cleaner including it
CN107246398A (en) * 2017-06-05 2017-10-13 梁世欢 Double air channel blower fans
CN108105151A (en) * 2018-01-29 2018-06-01 西安大康环保科技有限责任公司 A kind of fresh air air cleaner ultra-silent energy-saving wind turbine
CN108425882A (en) * 2018-05-31 2018-08-21 陈靖 A kind of electric hair dryer fan blade

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Application publication date: 20130904