CN205908522U - Fan air intake vortex -resistant device and fan - Google Patents
Fan air intake vortex -resistant device and fan Download PDFInfo
- Publication number
- CN205908522U CN205908522U CN201620758496.3U CN201620758496U CN205908522U CN 205908522 U CN205908522 U CN 205908522U CN 201620758496 U CN201620758496 U CN 201620758496U CN 205908522 U CN205908522 U CN 205908522U
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- China
- Prior art keywords
- blower
- air duct
- volute
- spoiler
- air inlet
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Abstract
The utility model relates to a fan technical field has specifically revead a fan air intake vortex -resistant device and fan. This fan air intake vortex -resistant device includes an air inlet section of thick bamboo, vertical spoiler, horizontal spoiler and mounting flange, the air inlet round hole that the cover is fixed in the volute blower lateral wall is worn to an air inlet section of thick bamboo, mounting flange will an air inlet section of thick bamboo is installed in volute blower's lateral wall, horizontal spoiler is cylindric, is located volute blower's inside, and the cover is located the air inlet section of thick bamboo outside, its one end is fixed in mounting flange, vertical spoiler is discoid, the diameter of its outward flange with the diameter of horizontal spoiler is the same, and with the other end fixed connection of horizontal spoiler, its inward flange is fixed in the surface of an air inlet section of thick bamboo. The utility model discloses can reduce the air current horizontal vortex that mobile in -process produced in volute blower, reduce the air current flow losses, improve the operating efficiency of fan.
Description
Technical field
This utility model is related to blower fan technical field, more particularly, to a kind of air inlet vortex eliminator and blower fan.
Background technology
The mechanical energy that relies on blower fan improves gas pressure and supplies gas side by side body, and it is a kind of driven fluid machinery, and it is as logical
Wind air interchanger, be widely used in all fields of national economies such as metallurgy, petrochemical industry, electric power, urban track traffic, weaving, ship with
And various places.Existing centrifugal blower is most of to be welded-steel plate construction, and the internal passage section of plate-welded spiral case is spiral
Shape square-section, air-flow is directly entered spiral case after flowing out from the draught fan impeller of high-speed rotation, curls up a Zhou Houliu in spiral case
Go out.Because Casing width is larger, air-flow can produce big horizontal vortex in flow process, causes very big flow losses, fall
The low operational efficiency of blower fan.
Utility model content
Main purpose of the present utility model is for providing a kind of air inlet vortex eliminator and blower fan, this air inlet
Vortex eliminator and blower fan, can reduce the horizontal vortex that air-flow produces in flow process in volute of blower, reduce air current flow
Loss, improves the operational efficiency of blower fan.
In order to realize above-mentioned technical purpose, the utility model proposes following technical scheme:
A kind of air inlet vortex eliminator, including entering air duct, vertical spoiler, horizontal spoiler and Method for Installation
Blue；Described enter air duct cross section be circle；Described enter air duct wear the air intake circular hole being fixed on volute of blower side wall；Described peace
The inward flange of dress flange enters the outer surface of air duct described in being fixed on, for by described enter air duct be installed on the side wall of volute of blower；
Described horizontal spoiler be cylindrical shape, positioned at the inside of volute of blower, be sheathed on described in enter outside air duct, its one end is fixed on institute
State mounting flange；Described vertical spoiler is discoid, and its outer peripheral diameter is identical with the diameter of described horizontal spoiler, and
Be fixedly connected with the other end of described horizontal spoiler, inner edges be fixed on described in enter the outer surface of air duct.
Further, described air inlet vortex eliminator, wherein said enter air duct include the first wind inlet section, this first
Wind inlet section is gradually reduced along by the direction cross-sectional area in volute of blower extroversion volute of blower.
Further, described air inlet vortex eliminator, wherein said enter air duct also include the second wind inlet section, this
Two wind inlet sections are connected to the minimum one end of described first wind inlet section cross-sectional area, and it is along by volute of blower extroversion volute of blower
Interior direction cross-sectional area is gradually increased.
Further, described air inlet vortex eliminator, wherein also includes adpting flange, described adpting flange setting
In described enter air duct be located at volute of blower outside one end, inner edges with described enter air duct end edge phase fix.
Further, described air inlet vortex eliminator, wherein, described enter air duct, vertical spoiler, horizontal flow-disturbing
Plate and mounting flange, being fixedly connected between each several part is welding.
This utility model also proposed a kind of blower fan, including the anti-vortex dress of the air inlet described in any of the above-described
Put.
The beneficial effects of the utility model are, structure is simple, on the basis of ensureing air intake steady air current, can reduce gas
The horizontal vortex that stream produces in flow process in volute of blower, reduces air current flow loss, improves the operational efficiency of blower fan.
Brief description
Fig. 1 is the structural representation of air inlet vortex eliminator in this utility model one embodiment；
Fig. 2 is the sectional drawing of air inlet vortex eliminator in this utility model one embodiment；
Fig. 3 is spiral case interior air-flow horizontal mobility before air inlet vortex eliminator installation in this utility model one embodiment
Schematic diagram；
Fig. 4 is spiral case interior air-flow horizontal mobility after air inlet vortex eliminator installation in this utility model one embodiment
Schematic diagram；
Fig. 5 is the schematic diagram of the blower fan being provided with air inlet vortex eliminator in this utility model one embodiment.
The realization of this utility model purpose, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.
Specific embodiment
It should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this
Utility model.
With reference to Fig. 1, Fig. 2 and Fig. 4, the utility model proposes a kind of air inlet vortex eliminator, including enter air duct 1,
Laterally spoiler 3, vertical spoiler 4 and mounting flange 2.The cross section entering air duct 1 is circle, enters air duct 1 and wear to be fixed on
The air intake circular hole of volute of blower 6 side wall.The inward flange of mounting flange 2 is fixed on the outer surface into air duct 1, for entering air duct 1
It is installed on the side wall of volute of blower 6.Laterally spoiler 3 is cylindrical shape, positioned at the inside of volute of blower 6, is sheathed on into outside air duct 1
Side, its one end is fixed on mounting flange 2.Vertical spoiler 4 is discoid, and its outer peripheral diameter is straight with horizontal spoiler 3
Footpath is identical, and is fixedly connected with the other end of horizontal spoiler 3, and inner edges are fixed on the outer surface into air duct 1.
In prior art, the internal passage section of centrifugal blower volute 6 is helical form square-section, and air-flow is from high-speed rotation
After flowing out in draught fan impeller 7, it is directly entered spiral case 6, flow out after curling up one week in spiral case 6.Because spiral case 6 width is larger, gas
Stream can produce larger horizontal vortex in flow process, and vortex can cause very big flow losses, reduces the operation of blower fan
Efficiency.The purpose of this utility model essentially consists in and reduces the horizontal vortex that volute of blower 6 interior air-flow is formed, to reduce the stream of air-flow
Dynamic loss, improves the operational efficiency of blower fan.Inside volute of blower 6, the above-mentioned horizontal spoiler 3 being set in into air duct 1 outside
With vertical spoiler 4, be equivalent in the annular region defining a closing near the position entering air duct 1 side wall air intake circular hole.
This utility model does not limit to the diameter of above-mentioned horizontal spoiler 3 and length, can enter air duct 1, leaf according to blower fan in use
The size of wheel 7 and spiral case 6 carries out specific design.
With reference to Fig. 3, existing blower fan in running, impeller 7 high-speed rotation under the driving of motor.Gas is from air inlet
After cylinder enters impeller 7, it is subject to centrifugal action in impeller 7, is curled up acceleration；Accelerated gas from impeller 7 outlet discharge after,
Enter in the annular housing of volute of blower 6, discharge after volute of blower 6 curls up one week.Efficient stream in volute of blower 6 for the air-flow
Dynamic path, is analogous to the same helical form of Crusta Limax.But in actual use, in order to save the centrifugal blower with steel plate welding
Cost, reduce the volume of complete blower and the simplicity of manufacturing process, spiral case 6 not fully according to helix rule manufacture,
But it is manufactured into simple moulding as shown in Figure 5.As described above, air-flow can produce a part of horizontal mobility in volute of blower 6,
And a very big eddy region is produced on lateral cross section.
With reference to Fig. 4, in the present embodiment, accelerated gas, after impeller 7 outlet is discharged, enters the annular of volute of blower 6
In cavity, discharge after volute of blower 6 curls up one week.In the horizontal, although air-flow can produce part horizontal stroke in volute of blower 6
To flowing, but due to being provided with the closed ring region of horizontal spoiler 3 and vertical spoiler 4 formation, the air-flow of horizontal mobility
It is subject to certain restrictions, very big vortex will not be formed, therefore reduce the flow losses of air-flow, improve the overall fortune of blower fan
Line efficiency.In use, especially it should be noted that the diameter of horizontal spoiler 3 and length and the relation of draught fan impeller 7 external diameter size, lead to
Crossing the concrete length arranging horizontal spoiler 3 is vertical spoiler 4 and the distance of impeller 7 and horizontal spoiler 3 diameter and leaf
Take turns the relativeness of 7 external diameters, the loss of gas flow sideways is minimized.In the present embodiment, the diameter of horizontal spoiler 3 connects
The size of nearly impeller 7 external diameter.
The effect entering air duct 1 enters volute of blower 6 with being to ensure that airflow smooth, and can be evenly distributed in impeller 7 and enter
Mouth section, reaches the velocity amplitude required by inlet air flow, and enters impeller 7 in the case of windage loss minimum.In use, enter
The shape of air duct 1 may be designed as cylinder, cone, arc, cone cylindricality, cone arc etc..
See figures.1.and.2, in the present embodiment, that enters air duct 1 is shaped as cone arc.Specifically, enter air duct 1 and include
One wind inlet section, this first wind inlet section is gradually reduced along by the direction cross-sectional area in the export-oriented volute of blower 6 of volute of blower 6.
Further, enter air duct 1 and also include the second wind inlet section, this second wind inlet section is connected to the first wind inlet section cross-sectional area minimum
One end, it is gradually increased along by the direction cross-sectional area in the export-oriented volute of blower 6 of volute of blower 6.To the first wind inlet section and
The respective length of second wind inlet section, the amplitude of cross section sectional area gradual change, this utility model is not specifically limited.Enter air duct 1 to adopt
Use above-mentioned cambered design, rip cutting rear wall lines are arc, this rational Design on Plane can make gas steadily enter blower fan, effectively drops
Low fan noise.
In order to manufacture easy and install firm, the utility model proposes air inlet vortex eliminator using integration
Assembling, wherein, enters air duct 1, vertical spoiler 4, horizontal spoiler 3 and mounting flange 2, being fixedly connected all between each several part
For welding.Specifically, the inward flange of mounting flange 2 is fixed on the outer surface into air duct 1, and horizontal spoiler 3 one end is fixed on
Mounting flange 2, vertical spoiler 4 is fixedly connected with the other end of horizontal spoiler 3, and these are fixedly connected is all welding, welding
After the completion of, air inlet vortex eliminator forms an entirety.
With reference to Fig. 1 and Fig. 5, in the present embodiment, air inlet vortex eliminator, wherein also include adpting flange, connect
Flange is arranged at the one end being located at volute of blower 6 outside into air duct 1, and inner edges are fixed with the edge phase entering air duct 1 end.Even
Acting flange be can be used for for blower fan entering air duct 1 and is connected with intake stack, expands the occasion of blower fan application.
This utility model also proposed a kind of blower fan, including as air inlet vortex eliminator of the present utility model,
The size of device each several part is adapted with the size of volute of blower 6 air intake circular hole and impeller 7.Volute of blower 6 side wall upper air inlet
The periphery of circular hole is provided with the installing hole matching with mounting flange 2, and during installation, mounting flange 2 can be located at the outer of volute of blower 6
Side can also be located at the inner side of volute of blower 6.
In sum, this utility model structure is simple, on the basis of ensureing air intake steady air current, can reduce air-flow in wind
The horizontal vortex producing in flow process in machine spiral case, reduces air current flow loss, improves the operational efficiency of blower fan；Meanwhile, originally
Utility model can ensure that gas steady and smooth enters volute of blower, and effectively reduces fan noise.
The foregoing is only preferred embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model,
Equivalent structure or equivalent flow conversion that every utilization this utility model description and accompanying drawing content are made, or direct or indirect transport
Used in other related technical fields, all include in the same manner in scope of patent protection of the present utility model.
Claims (6)
1. a kind of air inlet vortex eliminator it is characterised in that include into air duct, vertical spoiler, horizontal spoiler with
And mounting flange；
Described enter air duct cross section be circle；Described enter air duct wear the air intake circular hole being fixed on volute of blower side wall；
The inward flange of described mounting flange enters the outer surface of air duct described in being fixed on, for by described enter air duct be installed on blower fan snail
The side wall of shell；
Described horizontal spoiler be cylindrical shape, positioned at the inside of volute of blower, be sheathed on described in enter outside air duct, its one end is fixed
In described mounting flange；
Described vertical spoiler be discoid, its outer peripheral diameter is identical with the diameter of described horizontal spoiler, and with described
Laterally the other end of spoiler is fixedly connected, inner edges be fixed on described in enter the outer surface of air duct.
2. air inlet vortex eliminator according to claim 1 it is characterised in that described enter air duct include first and enter
Wind section, this first wind inlet section is gradually reduced along by the direction cross-sectional area in volute of blower extroversion volute of blower.
3. air inlet vortex eliminator according to claim 2 it is characterised in that described enter air duct also include second
Wind inlet section, this second wind inlet section is connected to the minimum one end of described first wind inlet section cross-sectional area, and it is along by volute of blower
Direction cross-sectional area in export-oriented volute of blower is gradually increased.
4. air inlet vortex eliminator according to claim 1 is it is characterised in that also including adpting flange, described
Adpting flange be arranged at described in enter air duct be located at volute of blower outside one end, inner edges with described enter air duct end edge phase
Fixing.
5. air inlet vortex eliminator according to claim 1 it is characterised in that described enter air duct, vertical flow-disturbing
Plate, horizontal spoiler and mounting flange, being fixedly connected between each several part is welding.
6. a kind of blower fan is it is characterised in that include the air inlet vortex eliminator described in any one of claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620758496.3U CN205908522U (en) | 2016-07-18 | 2016-07-18 | Fan air intake vortex -resistant device and fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620758496.3U CN205908522U (en) | 2016-07-18 | 2016-07-18 | Fan air intake vortex -resistant device and fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205908522U true CN205908522U (en) | 2017-01-25 |
Family
ID=57805713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620758496.3U Active CN205908522U (en) | 2016-07-18 | 2016-07-18 | Fan air intake vortex -resistant device and fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205908522U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109178943A (en) * | 2018-10-10 | 2019-01-11 | 镇江市丹徒区粮机厂有限公司 | A kind of highly effective and safe material handling fan |
-
2016
- 2016-07-18 CN CN201620758496.3U patent/CN205908522U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109178943A (en) * | 2018-10-10 | 2019-01-11 | 镇江市丹徒区粮机厂有限公司 | A kind of highly effective and safe material handling fan |
| CN109178943B (en) * | 2018-10-10 | 2024-02-27 | 镇江市丹徒区粮机厂有限公司 | High-efficient safe material conveying fan |
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| GR01 | Patent grant |