CN1995761A - Centrifugal fan impeller and volute-less centrifugal fan employing same - Google Patents
Centrifugal fan impeller and volute-less centrifugal fan employing same Download PDFInfo
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- CN1995761A CN1995761A CN 200610150634 CN200610150634A CN1995761A CN 1995761 A CN1995761 A CN 1995761A CN 200610150634 CN200610150634 CN 200610150634 CN 200610150634 A CN200610150634 A CN 200610150634A CN 1995761 A CN1995761 A CN 1995761A
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Abstract
The invention relates to a centrifugal fan impeller, comprising an edge plate, multiple vanes and an inner plate. The hub is fixed on the inner plate by nut and bolt. It is characterized in that the diameter of diffusion edge of impeller without vanes D is from 278mm to 1414mm; the diameter of impeller D1 is from 253mm to 1263mm; the diameter of impeller inlet D2 is from 167mm to 834mm; the total width of impeller B is from 115mm to 575mm; the width of impeller outlet b is from 77mm to 384mm; the angle of impeller outlet alpha is from 28 degrees to 33 degrees; the number of vanes N is 8. The invention finds the optimal matching relationship of the diameter of diffusion edge of impeller without vanes D, the diameter of impeller D1, the diameter of impeller inlet D2, the total width of impeller B, the width of impeller outlet b, the angle of impeller outlet alpha and the number of vanes N. It is provided with ease production, low cost and the no-shell 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 centrifugal fan, relate to a kind of centrifugal fan impeller and no shell centrifugal fan or rather with this impeller.
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.In addition, making the centrifugal fan impeller with 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.The present invention provides a kind of no shell centrifugal fan with this impeller simultaneously.
Centrifugal fan impeller of the present invention comprises dish, a plurality of blade, an inner disc and a wheel hub on one side, by screw bolt and nut wheel hub is fixedly mounted on the inner disc, it is characterized in that:
Impeller on-bladed diffusion limit diameter D is 278 millimeters to 1414 millimeters;
Impeller diameter D1 is 253 millimeters to 1263 millimeters;
Impeller inlet diameter D2 is 167 millimeters to 834 millimeters;
Impeller overall width B is 115 millimeters to 575 millimeters;
Impeller outlet width b is 77 millimeters to 384 millimeters;
Angle of impeller outlet alpha is that 28 degree are to 33 degree;
Blade quantity N is 8.
No shell centrifugal fan of the present invention comprises a motor, an impeller, an air intake guide shell and a bearing, and impeller comprises dish, a plurality of blade, an inner disc and a wheel hub on one side, by screw bolt and nut wheel hub is fixedly mounted on the inner disc, it is characterized in that:
Impeller on-bladed diffusion limit diameter D is 278 millimeters to 1414 millimeters;
Impeller diameter D1 is 253 millimeters to 1263 millimeters;
Impeller inlet diameter D2 is 167 millimeters to 834 millimeters;
Impeller overall width B is 115 millimeters to 575 millimeters;
Impeller outlet width b is 77 millimeters to 384 millimeters;
Angle of impeller outlet alpha is that 28 degree are to 33 degree;
Blade quantity N is 8.
Centrifugal fan impeller of the present invention, found the optimization of matching relation of impeller on-bladed diffusion limit diameter D, impeller diameter D1, impeller inlet diameter D2, impeller overall width B, impeller outlet width b, angle of impeller outlet alpha and blade quantity N, under the less situation of impeller diameter, still can obtain preferable effect, be easy to manufacturing, cost reduction, the no shell centrifugal fan life-span with this kind centrifugal fan impeller increases, and efficient has improved 3% than existing centrifugal fan.
Description of drawings
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is the fragmentary axial cross-section of no shell centrifugal fan of the present invention;
Fig. 2 is the axial sectional view of no shell centrifugal fan impeller shown in Figure 1;
Fig. 3 is the side view of impeller shown in Figure 2.
Embodiment
No shell centrifugal fan shown in Figure 1 comprises a motor 1, an impeller 2, an air intake guide shell 3 and a bearing 20.Motor 1 and air intake guide shell 3 are fastened on the bearing 20 by bolt.The axle of motor 1 is fixedlyed connected by key with the wheel hub of impeller 2.One end of air intake guide shell 3 stretches into the impeller inlet of limit dish 6.
Fig. 2 and centrifugal fan impeller shown in Figure 3 comprise an inner disc 5, on one side coil 6, the wheel hub 7 of a plurality of blade 4 and a band keyway.Blade 4 is a circular arc, and two relative the right and lefts of blade 4 are welded to connect with inner disc 5 and limit dish 6 respectively.The Surface Vertical of blade 4 and inner disc 5.The inward flange 21 of blade 4 is an arc, and outward edge 22 is a straight line.The wheel hub 7 that will have keyway by screw bolt and nut is fixedly mounted on the inner disc 5 of impeller 2.
The present inventor passes through effort for many years, on the basis of a large amount of tests, found the optimization of matching relation of impeller on-bladed diffusion limit diameter D, impeller diameter D1, impeller inlet diameter D2, impeller overall width B, impeller outlet width b, angle of impeller outlet alpha and blade quantity N, 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.
Embodiment's sequence number D (millimeter) D1 (millimeter) D2 (millimeter) B (millimeter) b (millimeter) α (degree) N (individual)
1 278 253 167 115 77 28 8
2 311 283 187 129 86 28 8
3 350 318 210 145 97 28 8
4 394 359 237 163 109 28 8
5 444 404 267 184 123 29 8
6 500 455 300 207 138 29 8
7 556 505 334 230 154 29 8
8 622 566 374 258 172 30 8
9 700 636 421 290 194 30 8
10 789 717 474 327 218 30 8
11 905 808 534 568 246 31 8
12 1018 909 601 414 277 31 8
13 1131 1010 668 460 308 32 8
14 1267 1131 748 515 344 32 8
15 1414 1263 834 575 384 33 8
Claims (10)
1, a kind of centrifugal fan impeller comprises dish, a plurality of blade, an inner disc and a wheel hub on one side, by screw bolt and nut wheel hub is fixedly mounted on the inner disc, it is characterized in that:
Impeller on-bladed diffusion limit diameter D is 278 millimeters to 1414 millimeters;
Impeller diameter D1 is 253 millimeters to 1263 millimeters;
Impeller inlet diameter D2 is 167 millimeters to 834 millimeters;
Impeller overall width B is 115 millimeters to 575 millimeters;
Impeller outlet width b is 77 to 384 millimeters;
Angle of impeller outlet alpha is that 28 degree are to 33 degree;
Blade quantity N is 8.
2, according to the described centrifugal fan impeller of claim 1, it is characterized in that:
Impeller on-bladed diffusion limit diameter D is 311 millimeters;
Impeller diameter D1 is 283 millimeters;
Impeller inlet diameter D2 is 187 millimeters;
Impeller overall width B is 129 millimeters;
Impeller outlet width b is 86 millimeters;
Angle of impeller outlet alpha is 28 degree;
Blade quantity N is 8.
3, according to the described centrifugal fan impeller of claim 1, it is characterized in that:
Impeller on-bladed diffusion limit diameter D is 350 millimeters;
Impeller diameter D1 is 318 millimeters;
Impeller inlet diameter D2 is 210 millimeters;
Impeller overall width B is 145 millimeters;
Impeller outlet width b is 97 millimeters;
Angle of impeller outlet alpha is 28 degree;
Blade quantity N is 8.
4, according to the described centrifugal fan impeller of claim 1, it is characterized in that:
Impeller on-bladed diffusion limit diameter D is 394 millimeters;
Impeller diameter D1 is 359 millimeters;
Impeller inlet diameter D2 is 237 millimeters;
Impeller overall width B is 163 millimeters;
Impeller outlet width b is 109 millimeters;
Angle of impeller outlet alpha is 28 degree;
Blade quantity N is 8.
5, according to the described centrifugal fan impeller of claim 1, it is characterized in that:
Impeller on-bladed diffusion limit diameter D is 444 millimeters;
Impeller diameter D1 is 404 millimeters;
Impeller inlet diameter D2 is 267 millimeters;
Impeller overall width B is 184 millimeters;
Impeller outlet width b is 123 millimeters;
Angle of impeller outlet alpha is 29 degree;
Blade quantity N is 8.
6, according to the described centrifugal fan impeller of claim 1, it is characterized in that:
Impeller on-bladed diffusion limit diameter D is 556 millimeters;
Impeller diameter D1 is 505 millimeters;
Impeller inlet diameter D2 is 334 millimeters;
Impeller overall width B is 230 millimeters;
Impeller outlet width b is 154 millimeters;
Angle of impeller outlet alpha is 29 degree;
Blade quantity N is 8.
7, according to the described centrifugal fan impeller of claim 1, it is characterized in that:
Impeller on-bladed diffusion limit diameter D is 700 millimeters;
Impeller diameter D1 is 636 millimeters;
Impeller inlet diameter D2 is 421 millimeters;
Impeller overall width B is 290 millimeters;
Impeller outlet width b is 194 millimeters;
Angle of impeller outlet alpha is 30 degree;
Blade quantity N is 8.
8, according to the described centrifugal fan impeller of claim 1, it is characterized in that:
Impeller on-bladed diffusion limit diameter D is 1018 millimeters;
Impeller diameter D1 is 909 millimeters;
Impeller inlet diameter D2 is 601 millimeters;
Impeller overall width B is 414 millimeters;
Impeller outlet width b is 277 millimeters;
Angle of impeller outlet alpha is 31 degree;
Blade quantity N is 8.
9, according to the described centrifugal fan impeller of claim 1, it is characterized in that:
Impeller on-bladed diffusion limit diameter D is 1267 millimeters;
Impeller diameter D1 is 1131 millimeters;
Impeller inlet diameter D2 is 748 millimeters;
Impeller overall width B is 515 millimeters;
Impeller outlet width b is 344 millimeters;
Angle of impeller outlet alpha is 32 degree;
Blade quantity N is 8.
10, a kind of no shell centrifugal fan comprises a motor, an impeller, an air intake guide shell and a bearing, and impeller comprises dish, a plurality of blade, an inner disc and a wheel hub on one side, by screw bolt and nut wheel hub is fixedly mounted on the inner disc, it is characterized in that:
Impeller on-bladed diffusion limit diameter D is 278 millimeters to 1414 millimeters;
Impeller diameter D1 is 253 millimeters to 1263 millimeters;
Impeller inlet diameter D2 is 167 millimeters to 834 millimeters;
Impeller overall width B is 115 millimeters to 575 millimeters;
Impeller outlet width b is 77 millimeters to 384 millimeters;
Angle of impeller outlet alpha is that 28 degree are to 33 degree;
Blade quantity N is 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610150634 CN1995761A (en) | 2006-10-20 | 2006-10-20 | Centrifugal fan impeller and volute-less centrifugal fan employing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610150634 CN1995761A (en) | 2006-10-20 | 2006-10-20 | Centrifugal fan impeller and volute-less centrifugal fan employing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1995761A true CN1995761A (en) | 2007-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610150634 Pending CN1995761A (en) | 2006-10-20 | 2006-10-20 | Centrifugal fan impeller and volute-less centrifugal fan employing same |
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| CN (1) | CN1995761A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527514A (en) * | 2013-10-29 | 2014-01-22 | 中国北车集团大连机车研究所有限公司 | Centrifugal fan impeller for locomotive |
-
2006
- 2006-10-20 CN CN 200610150634 patent/CN1995761A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527514A (en) * | 2013-10-29 | 2014-01-22 | 中国北车集团大连机车研究所有限公司 | Centrifugal fan impeller for locomotive |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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