CN1995760A - Centrifugal fan impeller - Google Patents
Centrifugal fan impeller Download PDFInfo
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- CN1995760A CN1995760A CN 200610150633 CN200610150633A CN1995760A CN 1995760 A CN1995760 A CN 1995760A CN 200610150633 CN200610150633 CN 200610150633 CN 200610150633 A CN200610150633 A CN 200610150633A CN 1995760 A CN1995760 A CN 1995760A
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Abstract
The invention relates to a centrifugal fan impeller, comprising two same left-right impellers and a hub with key groove. Each impeller comprises an edge plate, multiple vanes and an inner plate. Left-right impellers are fixed on the hub by bolt and nut. It is characterized in that the impeller diameter D is from 282mm to 1020mm; the diameter of impeller inlet d is from 151mm to 761mm; the total width of impeller B is from 210mm to 906mm; the outlet width of single impeller b is from 71mm to 245mm; the angle of impeller outlet alpha is from 42 degrees to 52 degrees; the inclined angle beta is from 78. 5 degrees to 88. 5 degrees; the arc radius of arc surface part in vane F is from 86mm to 414mm; the total number of vanes N is 12*2. The invention can obtain the optimal effect under the condition of smaller impeller diameter. It is provided with ease production, low cost and the centrifugal fan with the impeller is provided with long service life. The efficiency is improved by 3% compared with prior centrifugal fan.
Description
Technical field
The present invention relates to a kind of draught fan impeller, more precisely relate to the impeller of centrifugal fan.
Background technique
In the prior art, centrifugal fan impeller is made up of two limits dish and a mid-game and a plurality of blade.In general, the centrifugal fan impeller diameter is big more, and the outlet pressure of centrifugal fan is high more; The centrifugal fan impeller exit width is big more, and the exhaust air rate of centrifugal fan is big more.But the material of making impeller is directly proportional with the size of impeller, so have the draught fan impeller of big impeller diameter and big impeller outlet width, has strengthened the input of material, has increased the weight of impeller.Along with the increase of impeller weight, descend to the working life of bearing, and the power of blower fan increases.The centrifugal fan impeller that manufacturing has big impeller diameter and big impeller outlet width needs big manufacturing equipment and mould, and investment cost increases greatly, and manufacture difficulty constantly rises.In addition, the more important thing is to have the centrifugal fan of the centrifugal fan impeller of prior art, its efficient is lower, generally is no more than 76%.
Summary of the invention
The present invention to solve being difficult to that large diameter centrifugal fan impeller brings make, cost increases and have short, low these technical problems of efficient of centrifugal fan life-span of this centrifugal fan impeller, and a kind of centrifugal fan impeller with parameters optimization is provided.
Centrifugal fan impeller of the present invention comprises two identical left and right impellers and a wheel hub, and each impeller all comprises dish, a plurality of blade and an inner disc on one side, by screw bolt and nut left and right impeller is fixedly mounted on the wheel hub, it is characterized in that:
Impeller diameter D is 282 millimeters to 1020 millimeters;
The impeller inlet diameter d is 151 millimeters to 761 millimeters;
Impeller overall width B is 210 millimeters to 906 millimeters;
Single impeller outlet width b is 71 millimeters to 245 millimeters;
Angle of impeller outlet alpha is that 42 degree are to 52 degree;
Blade tilt β is that 78.5 degree are to 88.5 degree;
The radius of arc R of blade cambered surface part is 86 millimeters to 414 millimeters;
Blade amt amount N is 12 * 2.
Centrifugal fan impeller of the present invention, impeller diameter D, impeller inlet diameter d, impeller overall width B, single impeller outlet width b, angle of impeller outlet alpha, blade tilt β, the radius of arc R of blade cambered surface part and the optimization of matching relation of blade amt amount N have been found, under the less situation of impeller diameter, still can obtain preferable effect, be easy to manufacturing, cost reduction, the centrifugal fan life-span with this kind centrifugal fan impeller increases, and efficient has improved 3% than existing centrifugal fan.
Blade is the wing shape, is grouped into by cambered surface part, planar section and fillet part.
Preferably:
Impeller diameter D is 288;
The impeller inlet diameter d is 218 millimeters;
Impeller overall width B is 269 millimeters;
Single impeller outlet width b is 71 millimeters;
Angle of impeller outlet alpha is 47 degree;
Blade tilt β is 83.5 degree;
The radius of arc R of blade cambered surface part is 95 millimeters.
Preferably:
Impeller diameter D is 323;
The impeller inlet diameter d is 244 millimeters;
Impeller overall width B is 300 millimeters;
Single impeller outlet width b is 78.9 millimeters;
Angle of impeller outlet alpha is 47 degree;
Blade tilt β is 83.5 degree;
The radius of arc R of blade cambered surface part is 107 millimeters.
Preferably:
Impeller diameter D is 363;
The impeller inlet diameter d is 275 millimeters;
Impeller overall width B is 338 millimeters;
Single impeller outlet width b is 90.0 millimeters;
Angle of impeller outlet alpha is 47 degree;
Blade tilt β is 83.5 degree;
The radius of arc R of blade cambered surface part is 120 millimeters.
Preferably:
Impeller diameter D is 407;
The impeller inlet diameter d is 306 millimeters;
Impeller overall width B is 378 millimeters;
Single impeller outlet width b is 100.5 millimeters;
Angle of impeller outlet alpha is 47 degree;
Blade tilt β is 83.5 degree;
The radius of arc R of blade cambered surface part is 134 millimeters.
Preferably:
Impeller diameter D is 510;
The impeller inlet diameter d is 382 millimeters;
Impeller overall width B is 475 millimeters;
Single impeller outlet width b is 125.5 millimeters;
Angle of impeller outlet alpha is 47 degree;
Blade tilt β is 83.5 degree;
The radius of arc R of blade cambered surface part is 168 millimeters.
Preferably:
Impeller diameter D is 640;
The impeller inlet diameter d is 475 millimeters;
Impeller overall width B is 577 millimeters;
Single impeller outlet width b is 156.0 millimeters;
Angle of impeller outlet alpha is 47 degree;
Blade tilt β is 83.5 degree;
The radius of arc R of blade cambered surface part is 240 millimeters.
Preferably:
Impeller diameter D is 808;
The impeller inlet diameter d is 606 millimeters;
Impeller overall width B is 722 millimeters;
Single impeller outlet width b is 198.0 millimeters;
Angle of impeller outlet alpha is 47 degree;
Blade tilt β is 83.5 degree;
The radius of arc R of blade cambered surface part is 304 millimeters.
Preferably:
Impeller diameter D is 1000;
The impeller inlet diameter d is 746 millimeters;
Impeller overall width B is 888 millimeters;
Single impeller outlet width b is 245.0 millimeters;
Angle of impeller outlet alpha is 47 degree;
Blade tilt β is 83.5 degree;
The radius of arc R of blade cambered surface part is 376 millimeters.
Description of drawings
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is the vertical profile schematic views of draught fan impeller of the present invention;
Fig. 2 is the blade distribution schematic diagram of impeller shown in Figure 1;
Fig. 3 is the sectional elevation of blade shown in Figure 2;
Fig. 4 is the B-B sectional elevation of blade shown in Figure 2, the angle of inclination of expression blade.
Embodiment
Centrifugal fan impeller illustrated in figures 1 and 2 comprises that two identical left and right impellers 10,10 and have the wheel hub 5 of keyway.Each impeller 10 all comprise coil on one side 1, a plurality of blade 2 and an inner disc 3.Blade 2 is the wing shape, as shown in Figure 3, is made up of cambered surface part 23, planar section 24 and fillet part 25.Two relative the right and lefts of blade 2 are welded to connect with inner disc 3 and limit dish 1 respectively.Blade 2 relative inner discs 3 are to cambered surface part 23 lopsidedness several angles, as shown in Figure 4.The inward flange 21 of blade 2 is a straight line, and outward edge 22 is a straight line.By screw bolt and nut left and right impeller 10,10 is fixedly mounted on the wheel hub 5, two inner discs 3,3 are positioned at fixedlys connected the both sides of part with wheel hub 5, and two inner discs 3,3 do not contact each other.
The present inventor passes through effort for many years, on the basis of a large amount of tests, impeller diameter D, impeller inlet diameter d, impeller overall width B, single impeller outlet width b, angle of impeller outlet alpha, blade tilt β, the radius of arc R of blade cambered surface part 23 and the optimization of matching relation of blade amt amount N have been found, thereby under centrifugal fan impeller has situation than minor diameter, make the outlet of centrifugal fan still have elevated pressures and bigger air displacement, centrifugal fan efficient reaches 77% to 80%, has improved 3% than existing centrifugal fan.
First group of embodiment:
Sequence number D (millimeter) d (millimeter) B (millimeter) b (millimeter) α (degree) β (degree) R (millimeter) N (individual)
1 282 151 210 71.0 42 78.5 86 12×2
2 288 218 269 71.0 47 83.5 95 12×2
3 294 222 274 71.0 52 88.5 105 12×2
Second group of embodiment:
Sequence number D (millimeter) d (millimeter) B (millimeter) b (millimeter) α (degree) β (degree) R (millimeter) N (individual)
1 317 239 294 78.9 42 78.5 96 12×2
2 323 244 300 78.9 47 83.5 107 12×2
3 329 249 306 78.9 52 88.5 118 12×2
The 3rd group of embodiment:
Sequence number D (millimeter) d (millimeter) B (millimeter) b (millimeter) α (degree) β (degree) R (millimeter) N (individual)
1 356 270 331 90.0 42 78.5 108 12×2
2 363 275 338 90.0 47 83.5 120 12×2
3 370 281 345 90.0 52 88.5 132 12×2
The 4th group of embodiment:
Sequence number D (millimeter) d (millimeter) B (millimeter) b (millimeter) α (degree) β (degree) R (millimeter) N (individual)
1 399 300 370 100.5 42 78.5 121 12×2
2 407 306 378 100.5 47 83.5 134 12×2
3 415 312 386 100.5 52 88.5 147 12×2
The 5th group of embodiment:
Sequence number D (millimeter) d (millimeter) B (millimeter) b (millimeter) α (degree) β (degree) R (millimeter) N (individual)
1 447 332 407 111.5 42 78.5 135 12×2
2 456 339 415 111.5 47 83.5 150 12×2
3 465 346 423 111.5 52 88.5 165 12×2
The 6th group of embodiment:
Sequence number D (millimeter) d (millimeter) B (millimeter) b (millimeter) α (degree) β (degree) R (millimeter) N (individual)
1 500 374 466 125.5 42 78.5 151 12×2
2 510 382 475 125.5 47 83.5 168 12×2
3 520 390 485 125.5 52 88.5 185 12×2
The 7th group of embodiment:
Sequence number D (millimeter) d (millimeter) B (millimeter) b (millimeter) α (degree) β (degree) R (millimeter) N (individual)
1 559 416 504 140.0 42 78.5 194 12×2
2 570 424 514 140.0 47 83.5 215 12×2
3 581 432 524 140.0 52 88.5 237 12×2
The 8th group of embodiment:
Sequence number D (millimeter) d (millimeter) B (millimeter) b (millimeter) α (degree) β (degree) R (millimeter) N (individual)
1 627 466 565 156.0 42 78.5 216 12×2
2 640 475 577 156.0 47 83.5 240 12×2
3 663 485 589 156.0 52 88.5 264 12×2
The 9th group of embodiment:
Sequence number D (millimeter) d (millimeter) B (millimeter) b (millimeter) α (degree) β (degree) R (millimeter) N (individual)
1 705 521 633 176.0 42 78.5 243 12×2
2 719 532 646 176.0 47 83.5 270 12×2
3 733 543 659 176.0 52 88.5 297 12×2
The tenth group of embodiment:
Sequence number D (millimeter) d (millimeter) B (millimeter) b (millimeter) α (degree) β (degree) R (millimeter) N (individual)
1 792 594 708 198.0 42 78.5 274 12×2
2 808 606 722 198.0 47 83.5 304 12×2
3 824 618 736 198.0 52 88.5 334 12×2
The 11 group of embodiment:
Sequence number D (millimeter) d (millimeter) B (millimeter) b (millimeter) α (degree) β (degree) R (millimeter) N (individual)
1 888 662 793 222.0 42 78.5 322 12×2
2 906 676 809 222.0 47 83.5 358 12×2
3 924 690 825 222.0 52 88.5 394 12×2
The 12 group of embodiment:
Sequence number D (millimeter) d (millimeter) B (millimeter) b (millimeter) α (degree) β (degree) R (millimeter) N (individual)
1 980 731 870 245.0 42 78.5 338 12×2
2 1000 746 888 245.0 47 83.5 376 12×2
3 1020 761 906 245.0 52 88.5 414 12×2
Claims (10)
1, a kind of centrifugal fan impeller comprises two identical left and right impellers and a wheel hub, and each impeller all comprises dish, a plurality of blade and an inner disc on one side, by screw bolt and nut left and right impeller is fixedly mounted on the wheel hub, it is characterized in that:
Impeller diameter D is 282 millimeters to 1020 millimeters;
The impeller inlet diameter d is 151 millimeters to 761 millimeters;
Impeller overall width B is 210 millimeters to 906 millimeters;
Single impeller outlet width b is 71 millimeters to 245 millimeters;
Angle of impeller outlet alpha is that 42 degree are to 52 degree;
Blade tilt β is that 78.5 degree are to 88.5 degree;
The radius of arc R of blade cambered surface part is 86 millimeters to 414 millimeters;
Blade amt amount N is 12 * 2.
2, according to the described centrifugal fan impeller of claim 1, it is characterized in that: blade is the wing shape, is grouped into by cambered surface part, planar section and fillet part.
3, according to claim 1 or 2 described centrifugal fan impellers, it is characterized in that:
Impeller diameter D is 288;
The impeller inlet diameter d is 218 millimeters;
Impeller overall width B is 269 millimeters;
Single impeller outlet width b is 71 millimeters;
Angle of impeller outlet alpha is 47 degree;
Blade tilt β is 83.5 degree;
The radius of arc R of blade cambered surface part is 95 millimeters.
4, according to claim 1 or 2 described centrifugal fan impellers, it is characterized in that:
Impeller diameter D is 323;
The impeller inlet diameter d is 244 millimeters;
Impeller overall width B is 300 millimeters;
Single impeller outlet width b is 78.9 millimeters;
Angle of impeller outlet alpha is 47 degree;
Blade tilt β is 83.5 degree;
The radius of arc R of blade cambered surface part is 107 millimeters.
5, according to claim 1 or 2 described centrifugal fan impellers, it is characterized in that:
Impeller diameter D is 363;
The impeller inlet diameter d is 275 millimeters;
Impeller overall width B is 338 millimeters;
Single impeller outlet width b is 90.0 millimeters;
Angle of impeller outlet alpha is 47 degree;
Blade tilt β is 83.5 degree;
The radius of arc R of blade cambered surface part is 120 millimeters.
6, according to claim 1 or 2 described centrifugal fan impellers, it is characterized in that:
Impeller diameter D is 407;
The impeller inlet diameter d is 306 millimeters;
Impeller overall width B is 378 millimeters;
Single impeller outlet width b is 100.5 millimeters;
Angle of impeller outlet alpha is 47 degree;
Blade tilt β is 83.5 degree;
The radius of arc R of blade cambered surface part is 134 millimeters.
7, according to claim 1 or 2 described centrifugal fan impellers, it is characterized in that:
Impeller diameter D is 510;
The impeller inlet diameter d is 382 millimeters;
Impeller overall width B is 475 millimeters;
Single impeller outlet width b is 125.5 millimeters;
Angle of impeller outlet alpha is 47 degree;
Blade tilt β is 83.5 degree;
The radius of arc R of blade cambered surface part is 168 millimeters.
8, according to claim 1 or 2 described centrifugal fan impellers, it is characterized in that:
Impeller diameter D is 640;
The impeller inlet diameter d is 475 millimeters;
Impeller overall width B is 577 millimeters;
Single impeller outlet width b is 156.0 millimeters;
Angle of impeller outlet alpha is 47 degree;
Blade tilt β is 83.5 degree;
The radius of arc R of blade cambered surface part is 240 millimeters.
9, according to claim 1 or 2 described centrifugal fan impellers, it is characterized in that:
Impeller diameter D is 808;
The impeller inlet diameter d is 606 millimeters;
Impeller overall width B is 722 millimeters;
Single impeller outlet width b is 198.0 millimeters;
Angle of impeller outlet alpha is 47 degree;
Blade tilt β is 83.5 degree;
The radius of arc R of blade cambered surface part is 304 millimeters.
10, according to claim 1 or 2 described centrifugal fan impellers, it is characterized in that:
Impeller diameter D is 1000;
The impeller inlet diameter d is 746 millimeters;
Impeller overall width B is 888 millimeters;
Single impeller outlet width b is 245.0 millimeters;
Angle of impeller outlet alpha is 47 degree;
Blade tilt β is 83.5 degree;
The radius of arc R of blade cambered surface part is 376 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610150633 CN1995760A (en) | 2006-10-20 | 2006-10-20 | Centrifugal fan impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610150633 CN1995760A (en) | 2006-10-20 | 2006-10-20 | Centrifugal fan impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1995760A true CN1995760A (en) | 2007-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610150633 Pending CN1995760A (en) | 2006-10-20 | 2006-10-20 | Centrifugal fan impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1995760A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532502B (en) * | 2009-04-27 | 2011-09-07 | 江苏金通灵风机股份有限公司 | Post-treatment waste gas recycling high-temperature blower |
-
2006
- 2006-10-20 CN CN 200610150633 patent/CN1995760A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532502B (en) * | 2009-04-27 | 2011-09-07 | 江苏金通灵风机股份有限公司 | Post-treatment waste gas recycling high-temperature blower |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |