CN203362609U - Front disc and fan impeller - Google Patents
Front disc and fan impeller Download PDFInfo
- Publication number
- CN203362609U CN203362609U CN 201320394753 CN201320394753U CN203362609U CN 203362609 U CN203362609 U CN 203362609U CN 201320394753 CN201320394753 CN 201320394753 CN 201320394753 U CN201320394753 U CN 201320394753U CN 203362609 U CN203362609 U CN 203362609U
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- Prior art keywords
- shroud
- degree
- blade
- disc
- fan impeller
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Abstract
The utility model provides a front disc and a fan impeller. The front disc comprises an end ring and a base disc body, wherein the end ring is in circular-arc transitional connection the base disc body, the peripheral side of the base disc body is tilted, the tilted peripheral side and the end ring are arranged on the same side of the base disc body, and the fan impeller comprises the front disc, a rear disc and at least two blades. The central line of the front disc and the central line of the rear disc are arranged on the same axis, and the at least two blades are evenly distributed between the front disc and the rear disc in the circumferential direction. According to the front disc and the fan impeller, the peripheral side of the base disc body of the front disc is tilted, the tilted peripheral side enables air flow to be drawn over the inlet end of the front disc, more air flow smoothly enters a fan, the pneumatic performance of the fan is improved, the efficiency of the fan is improved, and energy consumption is reduced.
Description
Technical field
The utility model relates to the blower fan technology, relates in particular to a kind of shroud and draught fan impeller.
Background technique
Existing air-conditioning draught fan impeller, shroud is generally circular shape (as shown in Figure 1a), cone type (as shown in Figure 1 b) or simple circular arc type (as shown in Fig. 1 c).By research, find, the blower fan aeroperformance with said structure shroud is poor, and fan efficiency is low, and energy consumption is large.
The model utility content
The utility model provides a kind of shroud and draught fan impeller, to improve aeroperformance.
First aspect of the present utility model is to provide 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.
Shroud as above, wherein, the perk of described outer periphery is highly 5～15mm.
Another aspect of the present utility model is to provide 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 described hub disk along the circumferential direction.
Draught fan impeller as above, 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.
Draught fan impeller as above, the inlet angle that described blade and described hub disk form is 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 utility model embodiment passes through the outer periphery perk of front disk chassis, over by any means entrance point at shroud is won air-flow in the outer periphery of perk, make more gas enter into glibly in blower fan, improved the aeroperformance of blower fan, and then improved the efficiency of blower fan, reduced energy consumption.
The accompanying drawing explanation
The structural representation that Fig. 1 a is circular shape shroud in prior art;
The structural representation that Fig. 1 b is cone type shroud in prior art;
The structural representation that Fig. 1 c is simple circular arc type shroud in prior art;
The structural representation of the shroud that Fig. 2 provides for the utility model embodiment one;
The structural representation of the draught fan impeller that Fig. 3 provides for the utility model embodiment two;
The side view that Fig. 4 is Fig. 3;
The structural representation that Fig. 5 a is the blade described in the utility model embodiment;
The A that Fig. 5 b is blade shown in Fig. 5 is to view;
Fig. 6 is blade described in the utility model embodiment and the inlet angle of described hub disk formation and the schematic diagram of exit angle;
Fig. 7 is blade described in the utility model embodiment and the inlet angle of described shroud formation and the schematic diagram of exit angle.
Embodiment
The structural representation of the shroud that as shown in Figure 2, the utility model embodiment one provides.As shown in the figure, the described shroud of the present embodiment one 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 passes through the outer periphery perk of front disk chassis, and over by any means entrance point at shroud is won air-flow in the outer periphery of perk, and more gas is entered in blower fan glibly, has improved the aeroperformance of blower fan, and then has improved the efficiency 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.
The structural representation of the draught fan impeller that as shown in Figure 3 and Figure 4, the utility model embodiment two provides.As shown in Figure 3, the described draught fan impeller of the present embodiment two comprises: 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 described hub disk 4 (as shown in Figure 4) along the circumferential direction.
The present embodiment passes through the outer periphery perk of front disk chassis, and over by any means entrance point at shroud is won air-flow in the outer periphery of perk, and more gas is entered in blower fan glibly, has improved the aeroperformance of blower fan, and then has improved the efficiency of blower fan, has reduced energy consumption.
Particularly, the perk of outer periphery described in above-described embodiment can be highly 5～15mm.
Further, the blade described in above-described embodiment two can be the 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 practical application, the chamfer angles alpha of blade can specifically be selected 80 degree angles.As shown in Fig. 5 a and 5b, the blade that the hollow machine airfoil fan of cutting sth. askew is curved upper surface 51 and arc lower surface 52 folders and formation between upper surface 51 and lower surface 52 is (as shown in Figure 5 b) of hollow.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, 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 form 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 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 can make the operational noise of blower fan reduce.Simultaneously, because blade is hollow, blade is lighter, and the fan starting braking torque is little, and the power consumption certainly of blower fan also decreases.
Particularly, the inlet angle θ that described blade and described hub disk form is chosen as 14 degree～18 degree.Angle between the tangent line of the tangent line that as shown in Figure 6, this θ angle is hub disk 4 air intake inner rings 402 and the center camber line 501 of 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.Angle between the tangent line of the tangent line that as shown in Figure 6, this δ angle is the first auxiliary circle 401 and described blade 5 end face center line 501 outlet end.Wherein, described the first auxiliary circle 401 is the center of circle for take the center of circle of described hub disk, 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.Angle between the tangent line of the tangent line that as shown in Figure 7, this β angle is the second auxiliary circle 101 and described blade 5 end face center line 501 entrance points.Wherein, described the second auxiliary circle is the center of circle for take the center of circle of described shroud, 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 it should be noted that: 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 form is suitable, therefore the order of the inlet angle that described blade and described shroud form along the end circle to 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.Angle between the tangent line of the tangent line that as shown in Figure 7, this Φ angle is the 3rd auxiliary circle 102 and described blade 5 end face center line 501 outlet end.Wherein, described the 3rd auxiliary circle 102 is the center of circle for take the center of circle of described shroud, 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.
Finally it should be noted that: above each embodiment, only in order to the technical solution of the utility model to be described, is not intended to limit; Although with reference to aforementioned each embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that: its technological scheme that still can put down in writing aforementioned each embodiment is modified, or 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 each embodiment's technological scheme of the utility model.
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. shroud according to claim 1, is characterized in that, the perk of described outer periphery is highly 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 described shrouds of the claims 1 or 2;
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 described hub disk along the circumferential direction.
4. 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 the described draught fan impeller of claim 3 or 4, 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 the described draught fan impeller of claim 3 or 4, it is characterized in that, the inlet angle that described blade and described shroud form is 19 degree～23 degree.
8. according to the described draught fan impeller of claim 3 or 4, 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 |
|---|---|---|---|
| CN 201320394753 CN203362609U (en) | 2013-07-02 | 2013-07-02 | Front disc and fan impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320394753 CN203362609U (en) | 2013-07-02 | 2013-07-02 | Front disc and fan impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203362609U true CN203362609U (en) | 2013-12-25 |
Family
ID=49810383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320394753 Expired - Fee Related CN203362609U (en) | 2013-07-02 | 2013-07-02 | Front disc and fan impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203362609U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362862A (en) * | 2013-07-02 | 2013-10-23 | 浙江亿利达风机股份有限公司 | Front disk and fan impeller |
-
2013
- 2013-07-02 CN CN 201320394753 patent/CN203362609U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362862A (en) * | 2013-07-02 | 2013-10-23 | 浙江亿利达风机股份有限公司 | Front disk and fan impeller |
| CN103362862B (en) * | 2013-07-02 | 2016-08-17 | 浙江亿利达风机股份有限公司 | Draught fan impeller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20190702 |