CN103362862A - Front disk and fan impeller - Google Patents
Front disk and fan impeller Download PDFInfo
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- CN103362862A CN103362862A CN2013102782329A CN201310278232A CN103362862A CN 103362862 A CN103362862 A CN 103362862A CN 2013102782329 A CN2013102782329 A CN 2013102782329A CN 201310278232 A CN201310278232 A CN 201310278232A CN 103362862 A CN103362862 A CN 103362862A
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- shroud
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- blade
- circle
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Abstract
The invention provides a front disk and a fan impeller, wherein the front disk comprises an end ring and a chassis; the end ring is connected with the chassis in a transition manner; the outer rim of the chassis is upwarped, and the upwarped outer rim and the end ring are on the same side of the chassis. The fan impeller comprises the front disk, a rear disk and at least two blades; the central lines of the front disk and the rear disk are on the same axial line; the at least two blades are uniformly distributed between the front disk and the rear disk and in the peripheral direction. According to the front disk and the fan impeller disclosed by the embodiment of the invention, the outer rim of the chassis of the front disk is upwarped, the upwarped outer rim draws over air flow at the inlet end of the front disk, more air is enabled to smoothly get into a fan, so that the aerodynamic performance of the fan is improved, the efficiency of the fan is improved, and the energy consumption is reduced.
Description
Technical field
The present invention relates to the blower fan technology, relate in particular to a kind of shroud and draught fan impeller.
Background technique
Existing air-conditioning draught fan impeller, shroud are generally circular shape (as shown in Figure 1a), cone type (shown in Fig. 1 b) or simple circular arc type (shown in Fig. 1 c).Find by research, the blower fan aeroperformance with said structure shroud is poor, and fan efficiency is low, and energy consumption is large.
Summary of the invention
The invention provides a kind of shroud and draught fan impeller, to improve aeroperformance.
First aspect of the present invention provides a kind of shroud, comprises end circle and chassis; Wherein,
Described end circle is connected with described chassis arc transition;
The outer periphery perk on described chassis, the outer periphery of perk and described end circle are at the homonymy on described chassis.
Aforesaid shroud, wherein, the perk of described outer periphery highly is 5～15mm.
Another aspect of the present invention provides a kind of draught fan impeller, comprising: shroud, hub disk and at least two blades, wherein,
Described shroud comprises end circle and chassis, and described end circle is connected with described chassis arc transition, the outer periphery perk on described chassis, and the outer periphery of perk and described end circle are at the homonymy on described chassis;
The center line of described shroud and described hub disk is on same axis;
Described at least two blades are uniform being arranged between described shroud and the described hub disk in the circumferential direction of the circle.
Aforesaid draught fan impeller, wherein, described blade is the hollow machine airfoil fan of cutting sth. askew, the angle of chamfer of described blade is 75 degree～85 degree.
Aforesaid draught fan impeller, the inlet angle that described blade and described hub disk form are 14 degree～18 degree.The exit angle that described blade and described hub disk form is 27 degree～31 degree.The inlet angle that described blade and described shroud form is 19 degree～23 degree.The exit angle that described blade and described shroud form is 27 degree～31 degree.
As shown from the above technical solution, the embodiment of the invention is by the outer periphery perk with front disk chassis, over by any means at shroud entrance point is won air-flow in the outer periphery of perk, make more gas enter into glibly in the blower fan, improved the aeroperformance of blower fan, and then improved the efficient of blower fan, reduced energy consumption.
Description of drawings
Fig. 1 a is the structural representation of circular shape shroud in the prior art;
Fig. 1 b is the structural representation of cone type shroud in the prior art;
Fig. 1 c is the structural representation of simple circular arc type shroud in the prior art;
The structural representation of the shroud that Fig. 2 provides for the embodiment of the invention one;
The structural representation of the draught fan impeller that Fig. 3 provides for the embodiment of the 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 invention;
Fig. 5 b is that the A of blade shown in Figure 5 is to view;
Fig. 6 is blade described in the embodiment of the invention and the inlet angle of described hub disk formation and the schematic diagram of exit angle;
Fig. 7 is blade described in the embodiment of the invention and the inlet angle of described shroud formation and the schematic diagram of exit angle.
Embodiment
As shown in Figure 2, the structural representation of the shroud that provides of the embodiment of the invention one.As shown in the figure, the present embodiment one described shroud comprises: end circle 1 and chassis 2.Wherein, described end circle 1 is connected with described chassis 2 arc transition.Outer periphery 3 perks on described chassis 2, the outer periphery 3 of perk and the homonymy of described end circle 1 on described chassis 2.
The present embodiment is by with the outer periphery perk of front disk chassis, and over by any means at shroud entrance point is won air-flow in the outer periphery of perk, and more gas is entered in the blower fan glibly, has improved the aeroperformance of blower fan, and then has improved the efficient of blower fan, has reduced energy consumption.
Further, the perk height H of outer periphery 3 described in above-described embodiment one can be 10～20cm.Particularly, the perk of described outer periphery height can specifically arrange according to the actual size of shroud.
As shown in Figure 3 and Figure 4, the structural representation of the draught fan impeller that provides of the embodiment of the invention two.As shown in Figure 3, the present embodiment two described draught fan impellers comprise: shroud, hub disk 4 and at least two blades 5.Wherein, described shroud comprises end circle 1 and chassis 2, and described end circle 1 is connected with described chassis 2 arc transition.Outer periphery 3 perks on described chassis 2, the outer periphery 3 of perk and the homonymy of described end circle 1 on described chassis 2.The center line of described shroud and described hub disk 4 is on same axis.Described at least two blades 5 are uniform being arranged between described shroud and the described hub disk 4 (as shown in Figure 4) in the circumferential direction of the circle.
The present embodiment is by with the outer periphery perk of front disk chassis, and over by any means at shroud entrance point is won air-flow in the outer periphery of perk, and more gas is entered in the blower fan glibly, has improved the aeroperformance of blower fan, and then has improved the efficient of blower fan, has reduced energy consumption.
Particularly, the perk of outer periphery described in above-described embodiment highly can be 5～15mm.
Further, the blade described in above-described embodiment two can be the hollow machine airfoil fan of cutting sth. askew, and shown in Fig. 5 a, the chamfer angles alpha of described blade 5 is 75 degree～85 degree.When practical application, the chamfer angles alpha of blade can specifically be selected 80 degree angles.Shown in Fig. 5 a and 5b, the hollow machine airfoil fan of cutting sth. askew is the blade of curved upper surface 51 and arc lower surface 52 folders and formation, is (shown in Fig. 5 b) of hollow between upper surface 51 and the lower surface 52.The camber line of the camber line of upper surface 51 and lower surface 52 is same bending direction, 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 alloyed steel, or aluminum alloy.Because blade is cut sth. askew, namely an end is long, and an end is short.Blade short end 53 is circular arc, and as shown in Figure 3, the profile that the end circle 1 of this circular arc and shroud and chassis 2 consist of is suitable.During installation, as shown in Figure 3, the long end 54 of blade is welded on the hub disk 4 of draught fan impeller, and blade short end 53 is welded on the shroud along circular arc.The present embodiment Leaf adopts the hollow machine airfoil fan of cutting sth. askew can effectively improve blower fan work interior gas flow situation on opportunity, thereby the operational noise of blower fan is reduced.Simultaneously, because blade is hollow, blade is lighter, and the fan starting braking torque is little, and the certainly power consumption of blower fan also decreases.
Particularly, the inlet angle θ of described blade and described hub disk formation is chosen as 14 degree～18 degree.As shown in Figure 6, this θ angle is the angle between the tangent line of center camber line 501 of the tangent line of hub disk 4 air intake inner rings 402 and described blade 5 end faces.When practical application, the inlet angle θ that described blade and described hub disk form can specifically elect 16 degree as.
The exit angle δ that described blade and described hub disk form is chosen as 27 degree～31 degree.As shown in Figure 6, the angle between the tangent line of this δ angle tangent line that is the first auxiliary circle 401 and described blade 5 end face center lines 501 outlet end.Wherein, described the first auxiliary circle 401 is for take the center of circle of described hub disk as the center of circle, and blade 5 end face outlet ends to the distance in the described hub disk center of circle is the circle of radius.When practical application, the exit angle δ that blade and described hub disk form can specifically elect 29 degree as.
The inlet angle β that described blade and described shroud form is chosen as 19 degree～23 degree.As shown in Figure 7, the angle between the tangent line of this β angle tangent line that is the second auxiliary circle 101 and described blade 5 end face center lines 501 entrance points.Wherein, described the second auxiliary circle is for take the center of circle of described shroud as the center of circle, and blade 5 end face entrance points to the distance in the described shroud center of circle is the circle of radius.When practical application, the inlet angle β that described blade and described shroud form can specifically elect 21 degree as.Here need to prove: as shown in Figure 3, because blade short end 53 is circular arc, the profile that the end circle 1 of this circular arc and shroud and chassis 2 consist of is suitable, therefore the inlet angle of described blade and described shroud formation is along the order of holding circle to the chassis, being linear change, can be linear increment or linear decrease.
The exit angle Φ that described blade and described shroud form is chosen as 27 degree～31 degree.As shown in Figure 7, the angle between the tangent line of this Φ angle tangent line that is the 3rd auxiliary circle 102 and described blade 5 end face center lines 501 outlet end.Wherein, described the 3rd auxiliary circle 102 is for take the center of circle of described shroud as the center of circle, and blade 5 end face outlet ends to the distance in the described shroud center of circle is the circle of radius.When practical application, the exit angle Φ that blade and described shroud form can specifically elect 29 degree as.
It should be noted that at last: above each embodiment is not intended to limit only in order to technological scheme of the present invention to be described; Although with reference to aforementioned each embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technological scheme that aforementioned each embodiment puts down in writing, and perhaps some or all of technical characteristics wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technological scheme.
Claims (8)
1. a shroud is characterized in that, comprises end circle and chassis; Wherein,
Described end circle is connected with described chassis arc transition;
The outer periphery perk on described chassis, the outer periphery of perk and described end circle are at the homonymy on described chassis.
2. described shroud according to claim 1 is characterized in that, the perk of described outer periphery highly is 5～15mm.
3. a draught fan impeller is characterized in that, comprising: shroud, hub disk and at least two blades, wherein,
Described shroud is the claims 1 or 2 described shrouds;
The center line of described shroud and described hub disk is on same axis;
Described at least two blades are uniform being arranged between described shroud and the described hub disk in the circumferential direction of the circle.
4. described draught fan impeller according to claim 3 is characterized in that, described blade is the hollow machine airfoil fan of cutting sth. askew, and the angle of chamfer of described blade is 75 degree～85 degree.
5. according to claim 3 or 4 described draught fan impellers, it is characterized in that, the inlet angle that described blade and described hub disk form is 14 degree～18 degree.
6. require 3 or 4 described draught fan impellers according to power, it is characterized in that, the exit angle that described blade and described hub disk form is 27 degree～31 degree.
7. according to claim 3 or 4 described draught fan impellers, it is characterized in that, the inlet angle that described blade and described shroud form is 19 degree～23 degree.
8. according to claim 3 or 4 described draught fan impellers, it is characterized in that, the exit angle that described blade and described shroud form 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 true CN103362862A (en) | 2013-10-23 |
| CN103362862B 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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Cited By (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 (5)
| 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 |
| JPH1054400A (en) * | 1996-08-09 | 1998-02-24 | Sanyo Electric Co Ltd | Centrifugal blower |
| 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 |
-
2013
- 2013-07-02 CN CN201310278232.9A patent/CN103362862B/en active Active
Patent Citations (5)
| 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 |
| JPH1054400A (en) * | 1996-08-09 | 1998-02-24 | Sanyo Electric Co Ltd | Centrifugal blower |
| 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 |
Cited By (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 |
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| Publication number | Publication date |
|---|---|
| CN103362862B (en) | 2016-08-17 |
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