CN2414235Y - Centrifugal fan - Google Patents
Centrifugal fan Download PDFInfo
- Publication number
- CN2414235Y CN2414235Y CN 00213746 CN00213746U CN2414235Y CN 2414235 Y CN2414235 Y CN 2414235Y CN 00213746 CN00213746 CN 00213746 CN 00213746 U CN00213746 U CN 00213746U CN 2414235 Y CN2414235 Y CN 2414235Y
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- CN
- China
- Prior art keywords
- wheel
- wind
- gear wheel
- centrifugal
- guiding
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- Expired - Fee Related
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Abstract
The utility model discloses a centrifugal fan which comprises a bent vane type fan wheel, and the outer margin of a wheel axle sleeve of the bent vane type fan wheel is provided with a front air guiding stop wheel; the outer side wall surface of the front air guiding stop wheel is uniformly distributed with three to six curved surface-shaped bent vanes, and the outer side margins of the vanes are respectively connected and fixed on the inner side wall surface of a back air guiding stop wheel; a centrifugal air guiding channel formed by every other adjacent vanes is arranged inside an extended annular air guiding space formed between the front and the back air guiding stop wheels. The utility model has the advantages of compact structure, small size, large air quantity, low noise, favorable operating performance of the complete machine.
Description
The utility model relates to the improvement of air conditioner, specifically is a kind of centrifugal cutter, and it belongs to the blower fan technical field.
Existing centrifugal cutter, its critical piece curved blade type impeller is made up of bent blades and axle sleeve; Be distributed on five bent blades on the wheel shaft, it is big to occupy the space, thereby volume is bigger, and air quantity is less, and noise is higher, the complete machine poor performance.
The purpose of this utility model is that a kind of novel centrifugal cutter will be provided.This fan volume will reduce, and air quantity will increase, and noise is low, to increase specific speed, realizes that the complete machine performance is strong.
Task of the present utility model is finished by following technological scheme, developed a kind of centrifugal cutter, it comprises the curved blade type impeller, on the axle sleeve outer rim that this is taken turns, be provided with leading windscreen wheel, be evenly equipped with 3-6 sheet curvecd surface type bent blades on this gear wheel outer side surface, the outer ledge of all this blades connects solid on the interior sidewall surface of back wind-guiding gear wheel respectively; In the expansion type annular wind-guiding space that constitutes between the forward and backward wind-guiding gear wheel, constitute centrifugal wind-guiding road apart by per two these blades.
Described leading windscreen wheel, its shape can flares, also can be parabola face shape, can also be plane shape.
Described back wind-guiding gear wheel, its shape can be round platform bus face shape, also can be hyperbola face shape, can also be plane shape.
Described curvecd surface type bent blades, its spoon of blade can be involute face shape, also can be the narrow preceding wide curved arc surfaced in back.
Separation is the inlet/outlet width of all blades between the described forward and backward wind-guiding gear wheel, and wherein the blade entrance width is less than the exit width of this blade.
Described forward and backward wind-guiding gear wheel wherein forms the impeller inlet diameter between back wind-guiding gear wheel and the wheel shaft rear end, and this inlet diameter is greater than the outlet diameter of leading windscreen wheel.
Advantage of the present utility model is: designed clipping 3-6 sheet curvecd surface type bent blades between the forward and backward wind-guiding gear wheel, the centrifugal wind-guiding of the tubaeform expansion type annular road that forms between two these gear wheels.The inlet diameter in this wind-guiding road constitute the fan of back to blade profile, so this fan efficiency is higher greater than the outlet diameter of leading windscreen wheel, and noise is lower.Because it is little to have designed curvecd surface type bent blades radial length, and tangential width is big, can reduce the wheel footpath, and increase exhaust air rate, the specific speed of this fan is increased, realize reducing volume, cut down the consumption of energy, reduce the premium properties effect of noise.
Embodiment's accompanying drawings of the present utility model is as follows:
Fig. 1 is the fan wheel structure sectional view of centrifugal cutter;
Fig. 2 is the impeller front elevation (plan view of Fig. 1) of centrifugal cutter;
Fig. 3 is the impeller partial rear view (worm's eye view of Fig. 1) of centrifugal cutter.
Referring to Fig. 1-3, the centrifugal cutter of making is applied in the embedded indoor set of Haier's air conditioner, and it comprises the curved blade type impeller.Be provided with leading windscreen wheel 2 on this axle sleeve of taking turns 1 outer rim, be evenly equipped with 5 curvecd surface type bent blades 4 on these gear wheel 2 outer side surfaces, the outer ledge of all this blades 4 connects solid on the interior sidewall surface of back wind-guiding gear wheel 3 respectively.In the expansion type annular wind-guiding space that constitutes between by forward and backward wind-guiding gear wheel 2,3, constitute centrifugal wind-guiding road 5 apart by per two these blades 4.Designed leading windscreen wheel 2 its shape flares also can be parabola face shape.Designed back wind-guiding gear wheel 3 its shapes are round platform bus face shape, also can be hyperbola face shape.Designed curvecd surface type bent blades 4 is the narrow preceding wide curved arc surfaced in back.The entrance width b of designed curvecd surface type bent blades 4
1Be less than the exit width b of this blade 4
2Designed impeller inlet diameter D
1Be greater than the outlet diameter D of leading windscreen wheel 2
2
Claims (6)
1, a kind of centrifugal cutter, it comprises the curved blade type impeller, it is characterized in that: be provided with leading windscreen wheel on the axle sleeve outer rim that this is taken turns, be evenly equipped with 3-6 sheet curvecd surface type bent blades on this gear wheel outer side surface, the outer ledge of all this blades connects solid on the interior sidewall surface of back wind-guiding gear wheel respectively; In the expansion type annular wind-guiding space that constitutes between the forward and backward wind-guiding gear wheel, constitute centrifugal wind-guiding road apart by per two these blades.
2, centrifugal cutter according to claim 1 is characterized in that: described leading windscreen wheel, its shape can flares, also can be parabola face shape, can also be plane shape.
3, centrifugal cutter according to claim 1 is characterized in that: described back wind-guiding gear wheel, its shape can be round platform bus face shape, also can be hyperbola face shape, can also be plane shape.
4, centrifugal cutter according to claim 1 is characterized in that: described curvecd surface type bent blades, its spoon of blade can be involute face shape, also can be the narrow preceding wide curved arc surfaced in back.
5, according to claim 1,2,3 or 4 described centrifugal cutters, it is characterized in that: separation is the inlet/outlet width of all blades between the described forward and backward wind-guiding gear wheel, and wherein the blade entrance width is less than the exit width of this blade.
6, according to claim 1 or 3 described centrifugal cutters, it is characterized in that: described forward and backward wind-guiding gear wheel, wherein form the impeller inlet diameter between back wind-guiding gear wheel and the wheel shaft rear end, this inlet diameter is greater than the outlet diameter of leading windscreen wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00213746 CN2414235Y (en) | 2000-03-16 | 2000-03-16 | Centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00213746 CN2414235Y (en) | 2000-03-16 | 2000-03-16 | Centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2414235Y true CN2414235Y (en) | 2001-01-10 |
Family
ID=33579977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00213746 Expired - Fee Related CN2414235Y (en) | 2000-03-16 | 2000-03-16 | Centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2414235Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763684A (en) * | 2015-03-17 | 2015-07-08 | 合肥工业大学 | Fan air guide sleeve for improving efficiency and reducing noise |
-
2000
- 2000-03-16 CN CN 00213746 patent/CN2414235Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763684A (en) * | 2015-03-17 | 2015-07-08 | 合肥工业大学 | Fan air guide sleeve for improving efficiency and reducing noise |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |