CN203175962U - Multi-blade centrifugal fan blade - Google Patents
Multi-blade centrifugal fan blade Download PDFInfo
- Publication number
- CN203175962U CN203175962U CN 201320161219 CN201320161219U CN203175962U CN 203175962 U CN203175962 U CN 203175962U CN 201320161219 CN201320161219 CN 201320161219 CN 201320161219 U CN201320161219 U CN 201320161219U CN 203175962 U CN203175962 U CN 203175962U
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- blade
- wheel hub
- base plate
- leaf base
- blades
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Abstract
The utility model relates to the field of ventilation equipment, in particular to a multi-blade centrifugal fan blade, which comprises a circular blade bottom plate, a wheel hub, a flow guide ring and a plurality of blades, wherein the blades are fixed between the circular blade bottom plate and the flow guide ring; the wheel hub is connected integrally with the inner side of the circular blade bottom plate; a shaft hole sleeve is arranged in the center of the top of the wheel hub; the area of an air inlet between any adjacent blades is 75-85 percent of the area of a corresponding air outlet; and the diameter of the circular blade bottom plate is 420-480 millimeters. The multi-blade centrifugal fan blade has the advantages of novel structure, high air inlet efficiency, low noise, and particularly high static pressure value.
Description
Technical field
The utility model relates to the ventilation equipment field, relates in particular to a kind of centrifugation blade.
Background technique
The multiple-blade centrifugation blade is the vitals in the air-conditioning, the multiple-blade centrifugation blade comprises ring leaf base plate, wheel hub, blade and baffle liner, vanes fixed is between ring leaf base plate and baffle liner, wheel hub and ring leaf base plate inboard are connected as a single entity, wheel hub is concentric with ring leaf base plate, the center at wheel hub top arranges axle sleeve, and motor shaft passes the axle sleeve upper shaft hole and drives the rotation of multiple-blade centrifugation blade during use.The deficiency that existing multiple-blade centrifugation blade exists is that the relation of air intake efficiency and noise is difficult to balance, and namely air intake efficiency is low, and noise is big.
Summary of the invention
Goal of the invention of the present utility model is in order to solve the deficiency that existing multiple-blade centrifugation blade exists, to disclose a kind of novel structure, the multiple-blade centrifugation blade that air intake efficiency height and noise are low.
In order to realize above-mentioned purpose, the utility model has adopted following technological scheme:
The multiple-blade centrifugation blade, comprise ring leaf base plate, wheel hub, baffle liner and multi-disc blade, vanes fixed is between ring leaf base plate and baffle liner, wheel hub and ring leaf base plate inboard are connected as a single entity, the center shaft hole sleeve at the top of wheel hub, air-admitting surface between the adjacent blades is the 75%-85% of the exhaust outlet area of correspondence arbitrarily, and ring leaf base plate diameter is between 420mm-480mm.
As preferably, the air-admitting surface between the adjacent blades is the 78%-79% of corresponding exhaust outlet area arbitrarily, can obtain best air intake efficiency and static pressure.
As preferably, angle, the blade axle center angle difference between the adjacent blades, angle, blade axle center is that two blades and axle center radius constitute angle, can reduce the rotational noise of fan blade effectively, especially can eliminate the noise spike at fan blade rotation frequency multiplication place.
Adopted the multiple-blade centrifugation blade of above-mentioned technological scheme, air-admitting surface between the adjacent blades is the 75%-85% of the exhaust outlet area of correspondence arbitrarily, ring leaf base plate diameter is between 420mm-480mm, the advantage of this multiple-blade centrifugation blade is novel structure, air intake efficiency height, noise hang down and especially obtain good static pressure.
Description of drawings
Fig. 1: the utility model embodiment's multiple-blade centrifugation blade structural representation.
Fig. 2: the multiple-blade centrifugation blade schematic representation that baffle liner is not installed among the utility model embodiment.
Embodiment
Below in conjunction with Fig. 1 and Fig. 2 embodiment of the present utility model is made a detailed explanation.
Multiple-blade centrifugation blade as depicted in figs. 1 and 2, comprise ring leaf base plate 1, wheel hub 2, baffle liner 4 and multi-disc blade 3, blade 3 is fixed between ring leaf base plate 1 and the baffle liner 4, the material-saving die cavity is set in the blade 3, wheel hub 2 is connected as a single entity with ring leaf base plate 1 inboard, wheel hub 2 is concentric with ring leaf base plate 1, and the center at wheel hub 2 tops is provided with shaft hole sleeve 5, and wheel hub 2 is provided with a plurality of radiation holes.
Ring leaf base plate 1 diameter is between 420mm-480mm, air-admitting surface A between the adjacent blades 3 is the 75%-85% of the exhaust outlet area B of correspondence arbitrarily, and the air-admitting surface between the adjacent blades 3 is the 78%-79% of the exhaust outlet area B of correspondence arbitrarily, can obtain best static pressure, air intake efficiency improves 4% at least, and air-admitting surface A and exhaust outlet area B refer to that above-below direction is between ring leaf base plate 1 and the baffle liner 4, left and right directions is in the region area between the adjacent blades 3.
Angle, blade axle center angle difference between the adjacent blades 3, angle, blade axle center angle is all between 42 °-60 °, angle, blade axle center is that adjacent two blades and axle center radius constitute angle, angle, blade axle center angle difference can reduce the rotational noise of fan blade effectively, especially can eliminate the noise spike at fan blade rotation frequency multiplication place.
Claims (3)
1. multiple-blade centrifugation blade, comprise ring leaf base plate, wheel hub, baffle liner and multi-disc blade, vanes fixed is between ring leaf base plate and baffle liner, wheel hub and ring leaf base plate inboard are connected as a single entity, the center shaft hole sleeve at the top of wheel hub, it is characterized in that the air-admitting surface between any adjacent blades is the 75%-85% of the exhaust outlet area of correspondence, ring leaf base plate diameter is between 420mm-480mm.
2. multiple-blade centrifugation blade according to claim 1 is characterized in that the air-admitting surface between any adjacent blades is the 78%-79% of the exhaust outlet area of correspondence.
3. multiple-blade centrifugation blade according to claim 1 is characterized in that angle, the blade axle center angle difference between the adjacent blades, and angle, blade axle center is that two blades and axle center radius constitute angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320161219 CN203175962U (en) | 2013-04-02 | 2013-04-02 | Multi-blade centrifugal fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320161219 CN203175962U (en) | 2013-04-02 | 2013-04-02 | Multi-blade centrifugal fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203175962U true CN203175962U (en) | 2013-09-04 |
Family
ID=49072665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320161219 Expired - Lifetime CN203175962U (en) | 2013-04-02 | 2013-04-02 | Multi-blade centrifugal fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203175962U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895835A (en) * | 2014-03-05 | 2015-09-09 | 海尔集团公司 | Centrifugal fan, manufacturing method of centrifugal fan and air conditioner having centrifugal fan |
-
2013
- 2013-04-02 CN CN 201320161219 patent/CN203175962U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895835A (en) * | 2014-03-05 | 2015-09-09 | 海尔集团公司 | Centrifugal fan, manufacturing method of centrifugal fan and air conditioner having centrifugal fan |
| CN104895835B (en) * | 2014-03-05 | 2017-11-28 | 海尔集团公司 | A kind of centrifugal fan, the manufacture method of centrifugal fan and the air-conditioning with the centrifugal fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130904 |