CN103362862B - Draught fan impeller - Google Patents
Draught fan impeller Download PDFInfo
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- CN103362862B CN103362862B CN201310278232.9A CN201310278232A CN103362862B CN 103362862 B CN103362862 B CN 103362862B CN 201310278232 A CN201310278232 A CN 201310278232A CN 103362862 B CN103362862 B CN 103362862B
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Abstract
The present invention provides a kind of shroud and draught fan impeller.Wherein, described shroud includes end circle and chassis；Described end circle is connected with described chassis arc transition；The neighboring on described chassis tilts, the neighboring of tilting and the described end circle homonymy on described chassis.Described draught fan impeller includes above-mentioned shroud, hub disk and at least two blade；The center line of described shroud and described hub disk is on the same axis；Described at least two blade is the most uniform to be arranged between described shroud and described hub disk.The embodiment of the present invention is by tilting the neighboring of front disk chassis, and air-flow is won over by any means the entrance point at shroud, made more gas enter into glibly in blower fan by the neighboring of tilting, improves the aeroperformance of blower fan, and then improves the efficiency of blower fan, reduces energy consumption.
Description
Technical field
The present invention relates to blower fan technology, particularly relate to a kind of shroud and draught fan impeller.
Background technology
Existing air-conditioning draught fan impeller, shroud is usually circular ring type (as shown in Figure 1a), pyramid type (as shown in Figure 1 b) or simple circular arc type (as illustrated in figure 1 c).Found have the aerodynamic poor performance of said structure shroud by research, fan efficiency is low, and energy consumption is big.
Summary of the invention
The present invention provides a kind of shroud and draught fan impeller, to improve aeroperformance.
The first aspect of the invention is to provide a kind of shroud, including end circle and chassis；Wherein,
Described end circle is connected with described chassis arc transition；
The neighboring on described chassis tilts, the neighboring of tilting and the described end circle homonymy on described chassis.
Shroud as above, wherein, the tilting of described neighboring is highly 5～15mm.
Another aspect of the present invention is to provide a kind of draught fan impeller, including: shroud, hub disk and at least two blade, wherein,
Described shroud includes end circle and chassis, and described end circle is connected with described chassis arc transition, and the neighboring on described chassis tilts, the neighboring of tilting and the described end circle homonymy on described chassis；
The center line of described shroud and described hub disk is on the same axis；
Described at least two blade is the most uniform to be arranged between described shroud and described hub disk.
Draught fan impeller as above, wherein, described blade is hollow machine airfoil fan of cutting sth. askew, and the angle of chamfer of described blade is 75 degree～85 degree.
Draught fan impeller as above, the inlet angle that described blade is formed with described hub disk is 14 degree～18 degree.The angle of outlet that described blade is formed with described hub disk is 27 degree～31 degree.The inlet angle that described blade is formed with described shroud is 19 degree～23 degree.The angle of outlet that described blade is formed with described shroud is 27 degree～31 degree.
As shown from the above technical solution, the embodiment of the present invention is by tilting the neighboring of front disk chassis, and air-flow is won over by any means the entrance point at shroud by the neighboring of tilting, more gas is made to enter into glibly in blower fan, improve the aeroperformance of blower fan, and then improve the efficiency of blower fan, reduce energy consumption.
Accompanying drawing explanation
Fig. 1 a is the structural representation of circular ring type shroud in prior art；
Fig. 1 b is the structural representation of pyramid type shroud in prior art；
Fig. 1 c is the structural representation of simple circular arc type shroud in prior art；
The structural representation of the shroud that Fig. 2 provides for the embodiment of the present invention one；
The structural representation of the draught fan impeller that Fig. 3 provides for the embodiment of the present invention two；
Fig. 4 is the side view of Fig. 3；
Fig. 5 a is the structural representation of the blade described in the embodiment of the present invention；
Fig. 5 b is the A direction view of blade shown in Fig. 5 a；
Inlet angle that Fig. 6 is blade described in the embodiment of the present invention to be formed with described hub disk and the schematic diagram of the angle of outlet；
Inlet angle that Fig. 7 is blade described in the embodiment of the present invention to be formed with described shroud and the schematic diagram of the angle of outlet.
Detailed description of the invention
As in figure 2 it is shown, the structural representation of the shroud of the embodiment of the present invention one offer.As it can be seen, the shroud described in the present embodiment one includes: end circle 1 and chassis 2.Wherein, described end circle 1 is connected with described chassis 2 arc transition.The neighboring 3 on described chassis 2 tilts, neighboring 3 and the described end circle 1 homonymy on described chassis 2 of tilting.
The present embodiment is by tilting the neighboring of front disk chassis, and air-flow is won over by any means the entrance point at shroud, made more gas enter into glibly in blower fan by the neighboring of tilting, improves the aeroperformance of blower fan, and then improves the efficiency of blower fan, reduces energy consumption.
Further, the tilting height H of neighboring 3 described in above-described embodiment one can be 10～20cm.Specifically, tilting of described neighboring highly specifically can be arranged according to the actual size of shroud.
As shown in Figure 3 and Figure 4, the structural representation of the draught fan impeller that the embodiment of the present invention two provides.As it is shown on figure 3, the draught fan impeller described in the present embodiment two includes: shroud, hub disk 4 and at least two blade 5.Wherein, described shroud includes end circle 1 and chassis 2, and described end circle 1 is connected with described chassis 2 arc transition.The neighboring 3 on described chassis 2 tilts, neighboring 3 and the described end circle 1 homonymy on described chassis 2 of tilting.The center line of described shroud and described hub disk 4 is on the same axis.Described at least two blade 5 is the most uniform to be arranged between described shroud and described hub disk 4 (as shown in Figure 4).
The present embodiment is by tilting the neighboring of front disk chassis, and air-flow is won over by any means the entrance point at shroud, made more gas enter into glibly in blower fan by the neighboring of tilting, improves the aeroperformance of blower fan, and then improves the efficiency of blower fan, reduces energy consumption.
Specifically, the tilting of neighboring described in above-described embodiment can be highly 5～15mm.
Further, the blade described in above-described embodiment two can be hollow machine airfoil fan of cutting sth. askew, and as shown in Figure 5 a, the chamfer angles alpha of described blade 5 is 75 degree～85 degree.When reality is applied, the chamfer angles alpha of blade can specifically select 80 degree of angles.As shown in figure 5a and 5b, the blade that hollow machine airfoil fan of cutting sth. askew is curved upper surface 51 and arcuate lower surface 52 presss from both sides and constitutes, is hollow (as shown in Figure 5 b) between upper surface 51 and lower surface 52.The camber line of upper surface 51 is same bending direction with the camber line of lower surface 52, and the camber line curvature of upper surface 51 is less than the camber line curvature of lower surface 52.The material of blade can be steel, or steel alloy, or aluminium alloy.Owing to blade is cut sth. askew, i.e. one end is long, and one end is short.Blade short end 53 is in circular arc, as it is shown on figure 3, this circular arc is suitable with the profile that end circle 1 and the chassis 2 of shroud are constituted.During installation, as it is shown on figure 3, the long end 54 of blade is welded on the hub disk 4 of draught fan impeller, blade short end 53 is welded on shroud along circular arc.The present embodiment Leaf uses hollow machine airfoil fan of cutting sth. askew can be effectively improved gas flow condition in blower fan work opportunity, such that it is able to make the work noise of blower fan reduce.Simultaneously as blade is hollow, blade is relatively light, and fan starting kinetic moment is little, also decreasing from power consumption of blower fan.
Specifically, inlet angle θ that described blade and described hub disk are formed is chosen as 14 degree～18 degree.As shown in Figure 6, this θ angle be the tangent line of hub disk 4 air intake inner ring 402 and described blade 5 end face center camber line 501 tangent line between angle.When reality is applied, inlet angle θ that described blade is formed with described hub disk can specifically elect 16 degree as.
Angle of outlet δ that described blade is formed with described hub disk is chosen as 27 degree～31 degree.As shown in Figure 6, this δ angle is the angle between the tangent line of the first auxiliary circle 401 and the tangent line of described blade 5 end face center line 501 port of export.Wherein, described first auxiliary circle 401 is with the center of circle of described hub disk as the center of circle, the circle that distance is radius of blade 5 end face outlet end to the described hub disk center of circle.When reality is applied, angle of outlet δ that blade is formed with described hub disk can specifically elect 29 degree as.
The import angle beta that described blade is formed with described shroud is chosen as 19 degree～23 degree.As it is shown in fig. 7, the angle between the tangent line of the tangent line that this β angle is the second auxiliary circle 101 and described blade 5 end face center line 501 entrance point.Wherein, described second auxiliary circle is with the center of circle of described shroud as the center of circle, the circle that distance is radius of blade 5 end face entrance point to the described shroud center of circle.When reality is applied, the import angle beta that described blade is formed with described shroud can specifically elect 21 degree as.Need exist for explanation: as shown in Figure 3, owing to blade short end 53 is in circular arc, the profile that this circular arc is constituted with end circle 1 and the chassis 2 of shroud is suitable, the inlet angle that the most described blade and described shroud are formed is along end circle to the order on chassis, linearly change, can be linear increment or linear decrease.
Angle of outlet Φ that described blade is formed with described shroud is chosen as 27 degree～31 degree.As it is shown in fig. 7, the angle between the tangent line that this Φ angle is the 3rd auxiliary circle 102 and the tangent line of described blade 5 end face center line 501 port of export.Wherein, described 3rd auxiliary circle 102 is with the center of circle of described shroud as the center of circle, the circle that distance is radius of blade 5 end face outlet end to the described shroud center of circle.When reality is applied, angle of outlet Φ that blade is formed with described shroud can specifically elect 29 degree as.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；Although the present invention being described in detail with reference to foregoing embodiments, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or the most some or all of technical characteristic is carried out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (1)
1. a draught fan impeller, it is characterised in that including: shroud, hub disk and at least two blade, its
In,
Described shroud includes end circle and chassis；Wherein, described end circle is connected with described chassis arc transition；
The neighboring on described chassis tilts, the neighboring of tilting and the described end circle homonymy on described chassis；
The tilting of neighboring, described chassis is highly 5～15mm；
The center line of described shroud and described hub disk is on the same axis；
Described at least two blade is the most uniform to be arranged between described shroud and described hub disk；
Described blade is hollow machine airfoil fan of cutting sth. askew, and the angle of chamfer of described blade is 80 degree～85 degree；
The inlet angle that described blade is formed with described hub disk is 14 degree～18 degree；
The angle of outlet that described blade is formed with described hub disk is 27 degree～31 degree；
The inlet angle that described blade is formed with described shroud is 19 degree～23 degree；
The angle of outlet that described blade is formed with described shroud is 27 degree～31 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310278232.9A CN103362862B (en) | 2013-07-02 | 2013-07-02 | Draught fan impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310278232.9A CN103362862B (en) | 2013-07-02 | 2013-07-02 | Draught fan impeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103362862A CN103362862A (en) | 2013-10-23 |
| CN103362862B true CN103362862B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310278232.9A Active CN103362862B (en) | 2013-07-02 | 2013-07-02 | Draught fan impeller |
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| Country | Link |
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| CN (1) | CN103362862B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253536A (en) * | 2020-10-30 | 2021-01-22 | 浙江科贸智能机电股份有限公司 | Centrifugal impeller and ventilator thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2057246U (en) * | 1989-11-28 | 1990-05-16 | 湘潭南方空调环保技术开发公司 | All-arc hollow chamfered backward wing blade for centrifugal fan |
| CN202833288U (en) * | 2011-03-14 | 2013-03-27 | 美蓓亚株式会社 | Impeller and centrifugal fan with impeller |
| CN202914386U (en) * | 2012-11-20 | 2013-05-01 | 浙江朗迪集团股份有限公司 | Metal centrifugal impeller |
| CN203362609U (en) * | 2013-07-02 | 2013-12-25 | 浙江亿利达风机股份有限公司 | Front disc and fan impeller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1054400A (en) * | 1996-08-09 | 1998-02-24 | Sanyo Electric Co Ltd | Centrifugal blower |
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2013
- 2013-07-02 CN CN201310278232.9A patent/CN103362862B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2057246U (en) * | 1989-11-28 | 1990-05-16 | 湘潭南方空调环保技术开发公司 | All-arc hollow chamfered backward wing blade for centrifugal fan |
| CN202833288U (en) * | 2011-03-14 | 2013-03-27 | 美蓓亚株式会社 | Impeller and centrifugal fan with impeller |
| CN202914386U (en) * | 2012-11-20 | 2013-05-01 | 浙江朗迪集团股份有限公司 | Metal centrifugal impeller |
| CN203362609U (en) * | 2013-07-02 | 2013-12-25 | 浙江亿利达风机股份有限公司 | Front disc and fan impeller |
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| Publication number | Publication date |
|---|---|
| CN103362862A (en) | 2013-10-23 |
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