CN205744588U - A kind of centrifugal blower fan blade wheel - Google Patents
A kind of centrifugal blower fan blade wheel Download PDFInfo
- Publication number
- CN205744588U CN205744588U CN201620405367.6U CN201620405367U CN205744588U CN 205744588 U CN205744588 U CN 205744588U CN 201620405367 U CN201620405367 U CN 201620405367U CN 205744588 U CN205744588 U CN 205744588U
- Authority
- CN
- China
- Prior art keywords
- blower fan
- blade
- air
- shroud
- centrifugal blower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of centrifugal blower fan blade wheel, including a shroud and a hub disk, circumferentially being evenly distributed with several blades between described shroud and dish, described blade has several air-guide pores, the distribution density of described air-guide pore is from shroud end to hub disk end from dense to sparse.Have employed centrifugal blower fan blade wheel of the present utility model, by the surface configuration air-guide pore at blade, the high static pressure making the work surface of blade guides the low static pressure of non-working surface, make the dust adsorbed on non-working surface by high velocity air to breaking up, also the eddy current formed on inoperative also can be dispelled meanwhile, add the efficiency of blower fan, both solved the dust stratification problem of fan blade, and it also avoid the fan safe hidden danger caused because of eddy current accumulation, be two to obtain at one stroke.
Description
Technical field
This utility model relates to a kind of draught fan impeller, particularly relates to the impeller of a kind of centrifugal blower, belongs to ventilating machinary category.
Background technology
After fan operation one stage, have fouling phenomenon on fan impeller blade lee face to occur, owing on each blade, dust stratification is uneven, the balance making impeller is destroyed, and makes blower fan generation seismism, can affect the normal operation of blower fan time serious, the particularly centrifugal blower such as boiler induced-draft fan, working in the environment of flue gas, and the dust granule in flue gas is thinner, dust onv entilator vane is the most serious；When the dust content in flue gas is the biggest, the easiest dust stratification of blade, simultaneously, when, after vane dust deposition, its thickness can increase, knowable to blower fan research is theoretical, due to the increase of vane thickness, the sectional area in Shi Ye road reduces, i.e. the gross blockage factor in the cross section, leaf road junction of impeller strengthens, making the flow of blower fan, efficiency declines accordingly, and vane dust deposition is as artificial the same thickening vanes, make the flow of blower fan, efficiency declines accordingly, eliminates the dust stratification on blade, can improve the running effect of blower fan.
Utility model content
For overcoming drawbacks described above, this utility model aims to provide a kind of blade surface and is difficult to dust stratification, thus ensures that blower fan can run well, and ensures the centrifugal blower fan blade wheel of fan performance.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is: a kind of centrifugal blower fan blade wheel, including a shroud and a hub disk, several blades circumferentially it are evenly distributed with between described shroud and dish, there are several air-guide pores, a diameter of 10 ± 1 millimeters of described air-guide pore on described blade.
The distribution density of described air-guide pore is from shroud end to hub disk end from dense to sparse.
Have employed centrifugal blower fan blade wheel of the present utility model, by the surface configuration air-guide pore at blade, the high static pressure making the work surface of blade guides the low static pressure of non-working surface, make the dust adsorbed on non-working surface by high velocity air to breaking up, also the eddy current formed on inoperative also can be dispelled meanwhile, add the efficiency of blower fan, both solved the dust stratification problem of fan blade, and it also avoid the fan safe hidden danger caused because of eddy current accumulation, be two to obtain at one stroke.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-shroud, 2-hub disk, 3-blade, 4-air-guide pore.
Detailed description of the invention
As shown in Figure 1, the utility model discloses a kind of centrifugal blower fan blade wheel, including a shroud 1 and a hub disk 2, several blades 3 circumferentially it are evenly distributed with between described shroud 1 and dish 2, generally the windward side of blade 3 is called work surface, the lee face of blade 3 is referred to as non-working surface, when impeller high speed rotating, from the Bernoulli equation of relative motion, because the speed of the work surface of blade 3 is less than the speed of non-working surface, so the static pressure of front side of vane is more than the static pressure on non-working surface, this is the main cause causing and easily adsorbing dust on blade 3 non-working surface；Innovative point of the present utility model essentially consists in has several air-guide pores 4 on described blade 3, by air-guide pore 4, air-flow higher for work surface static pressure can be guided non-working surface, dispel the dust of absorption on non-working surface, simultaneously, also can dispel the eddy current on non-working surface, through actual measurement, the diameter of usual described air-guide pore 4 can be set to 10 ± 1 millimeters.
According to actual measurement, generally the distribution density of described air-guide pore 4 is set to from shroud 1 end to hub disk 2 end from dense to sparse.Specifically: one, blade 3 is being evenly arranged with closeer air-guide pore 4 on the side of shroud 1, the gases at high pressure making the work surface of blade 3 enter at a high speed non-working surface by air-guide pore 4, non-working surface fluid low speed micelle at shroud 1 is broken up and takes away, dust stratification is made to be not likely to produce, even if there being small part dust stratification, the high-speed gas of work surface also can blow away dust stratification；Two, the air-guide pore relatively dredged is set at the centre of blade 3 and close hub disk 2, the high velocity air of work surface can be dispelled the eddy current formed between adjacent two blades 3 by air-guide pore 4, it is made to be difficult to form eddy current, or form eddy current less, so on the one hand, the internal consumption of blower fan can be reduced, increasing the efficiency of blower fan, can also reduce producing fouling phenomenon owing to eddy current exists in a large number between blade 3 simultaneously, the dust stratification that high-speed gas can also be formed small part eddy current blows away.
Claims (2)
1. a centrifugal blower fan blade wheel, including a shroud (1) and a hub disk (2), several blades (3) circumferentially it are evenly distributed with between described shroud (1) and hub disk (2), it is characterized in that having on described blade (3) several air-guide pores (4), a diameter of 10 ± 1 millimeters of described air-guide pore (4).
Centrifugal blower fan blade wheel the most according to claim 1, it is characterised in that the distribution density of described air-guide pore (4) is held from dense to sparse to hub disk (2) from shroud (1) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620405367.6U CN205744588U (en) | 2016-05-05 | 2016-05-05 | A kind of centrifugal blower fan blade wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620405367.6U CN205744588U (en) | 2016-05-05 | 2016-05-05 | A kind of centrifugal blower fan blade wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205744588U true CN205744588U (en) | 2016-11-30 |
Family
ID=57369825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620405367.6U Active CN205744588U (en) | 2016-05-05 | 2016-05-05 | A kind of centrifugal blower fan blade wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205744588U (en) |
-
2016
- 2016-05-05 CN CN201620405367.6U patent/CN205744588U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203756593U (en) | High-efficient centrifugal wind wheel | |
| CN107061329A (en) | A kind of axial flow blower | |
| CN205383109U (en) | Centrifugal fan and air conditioner | |
| CN106704261A (en) | Axial flow fan ternary impeller with vein-shaped structure and nonuniform empennage | |
| CN105756975A (en) | Axial flow fan with blade front edges having groove structures and with blade root blowing effect | |
| CN109026830B (en) | Centrifugal impeller | |
| CN105782090A (en) | Noise-lowering and vortex-reducing axial flow fan | |
| CN104653515B (en) | A kind of double-suction type centrifugal fan | |
| CN205173055U (en) | Low noise that trailing edge is buckled does not have spiral case fan wheel | |
| CN202833299U (en) | Axial wind wheel | |
| CN104613009A (en) | Reversible axial flow fan blade with air blowing grooves | |
| CN207004920U (en) | Axial flow blower 3 d impeller with leaf vein texture and circular arc post splitterr vanes | |
| CN206929130U (en) | Axial flow blower 3 d impeller with leaf vein texture and sea-gull type splitterr vanes | |
| CN108953222B (en) | Centrifugal impeller | |
| CN205744588U (en) | A kind of centrifugal blower fan blade wheel | |
| CN202833325U (en) | Radial diffuser and centrifugal compressor with the same | |
| CN205101284U (en) | Low noise ceiling fan | |
| CN204692190U (en) | A kind of vane diffuser with deviated splitter vane | |
| CN209041171U (en) | A kind of centrifugal impeller of double split flow blade | |
| CN206738198U (en) | A kind of axial flow blower | |
| CN201382019Y (en) | Diversion fan blade | |
| CN207004919U (en) | Axial flow blower 3 d impeller with leaf vein texture and splitterr vanes | |
| CN203362608U (en) | Bladeless fan turbine gear with splitter vanes | |
| CN216044614U (en) | Integrally formed curved and swept combined blade, impeller and axial flow fan | |
| CN204553344U (en) | Double-sucking type centrifugal blower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |