CN202659569U - Fan blade with high air quantity and low noise - Google Patents
Fan blade with high air quantity and low noise Download PDFInfo
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- CN202659569U CN202659569U CN 201220270921 CN201220270921U CN202659569U CN 202659569 U CN202659569 U CN 202659569U CN 201220270921 CN201220270921 CN 201220270921 CN 201220270921 U CN201220270921 U CN 201220270921U CN 202659569 U CN202659569 U CN 202659569U
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- fan blade
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Abstract
The utility model provides a fan blade with high air quantity and low noise. A hub, seven blades and a protective fan ring form a whole; and a coupling device, a motor and a protective fan cover form a fan assembly. The fan blade is characterized in that the seven blades are distributed at unequal intervals, and the distribution angles of the seven blades are sequentially 50.0 degrees, 51.5 degrees, 53.0 degrees, 54.5 degrees, 55.5 degrees, 47 degrees and 48.5 degrees. Compared with the ring fan blade in the prior art, the fan blade with high air quantity and low noise has the advantages that under the condition that the efficiency does not decline, the weight of a fan can be reduced, the air quantity of the fan is improved, the noise of the assembly is reduced and the quality of sound is improved.
Description
Technical field
The utility model relates to a kind of fan, relates in particular to a kind of Wind Volume low noise fan blade.
Background technique
The fan blade that the cooling fan that uses in vapour (sedan-chair) car at present adopts is divided into band fan blade and band fan blade not on the structure, be divided into prismatic blade and bent blades on the blade profile.
Along with the development of automotive industry, people are more and more higher for the requirement of automobile function, not only pursue outward appearance, more pay attention to its internal quality and travelling comfort.For cooling fan for cars, its air quantity and noise are main performance index, and often demand is under certain working condition in car load manufacturing enterprise, and fan has higher air quantity and lower power consumpiton, this just requires fan that higher efficient is arranged, and requires again fan that lower noise is arranged simultaneously.And along with the progress of science and technology, there has been more requirement in each car load manufacturing enterprise to noise quality now, not only requires global noise low, and requires on noise spectrum, and the noise difference of successive bands can not surpass certain limit value.
Main fan in the existing product double fan is backward leaning vane, and noise is larger.
The model utility content
The purpose of this utility model for a kind of Wind Volume low noise fan blade is provided, under the condition that guaranteed efficiency does not reduce, can reduce fan weight exactly, improves air quantity of fan, reduces the assembly noise, improves acoustical mass.
In order to achieve the above object, the utility model has adopted following technological scheme: a kind of Wind Volume low noise fan blade, by wheel hub, blade with protect solar or lunar halo and form one, by hitch bar and motor and wind shelling cover composition fan assembly, blade wherein is seven, seven blades are not equally spaced, and distribution angle is followed successively by 50.0 °, 51.5 °, 53.0 °, 54.5 °, 55.5 °, 47 ° and 48.5 °.
Described fan blade adopts antecurvature blade profile, take the line of the center of circle and blade root leading edge point as reference line, be designated as the kyphotic angle in this cross section with the angle of the line in the leading edge point in cross section and the center of circle and reference line, the antecurvature angle from root to top vane is followed successively by 0 ° ,-2.4 ° ,-3.6 ° ,-3.7 ° ,-3 ° ,-1.6 °, 0.4 °, 2.7 °, 5.4 °, 8.2 ° and 11 °.
Described fan blade adopts and becomes the circular rector flow pattern, and from root of blade to the top, each cross section leaf grating established angle is followed successively by 26.7 °, 23.9 °, 21.6 °, 19.8 °, 18.2 °, 17 °, 15.9 °, 15 °, 14.2 °, 13.5 ° and 12.9 °; From root of blade to the top, each cross section leaf grating chord length is followed successively by 48.5mm, 51.1mm, 53mm, 54.4mm, 55.4mm, 55.9mm, 56.2mm, 56.1mm, 55.8mm, 55.3mm and 54.5mm.
Wind Volume low noise fan blade of the present utility model has been owing to adopted above technological scheme, have following advantage and and characteristics:
1. main blade adopts the odd number sheet not to be equally spaced, and has not only reduced the numerical value of noise, has more optimized the level of comfort of sound.
2. adopt the forward curved vane structure, by suitable antecurvature angle, not only improved the intensity of blade, more play the effect of optimizing flow field and noise optimized.
3. vane tip has adopted the structure of protecting solar or lunar halo, improved blade strength, overcome when High Rotation Speed, the larger variation of the blade radially stretching antecurvature angle that causes and vane airfoil profile established angle under centrifugal action has guaranteed that the ride quality of fan blade does not have large variation.Simultaneously, owing to protect the support reinforcing effect of solar or lunar halo, the irregular chatterin of blade when having overcome High Rotation Speed has been avoided owing to blade is shaken the extraordinary noise that causes, thereby has optimized the level of comfort of sound.
Description of drawings
Fig. 1 is the basic structure schematic representation of the utility model Wind Volume low noise fan blade;
Fig. 2 is setting angle and the cross section chord length schematic representation in 11 cross sections of the blade in the utility model.
Embodiment
Cooperation is referring to Fig. 1, Fig. 2, and the utility model Wind Volume low noise fan blade is by wheel hub 1, blade 2 with protect solar or lunar halo 3 and form one, fan blade is the integral molded plastic goods, blade 2 Ye Dingchu with protect solar or lunar halo 3 and be connected, be connected with wheel hub 1 at the blade root place, coupling structure 4 is arranged on the wheel hub 1.Motor shaft is connected with fan blade by coupling structure 4, drives the fan blade rotation and carries air.
For improving the acoustics performance of fan blade, blade is seven and is not equally spaced that distribution angle is followed successively by 50.0 °, 51.5 °, 53.0 °, 54.5 °, 55.5 °, 47 ° and 48.5 °.Shown in the A1 among Fig. 1.
During the fan blade design, equidistantly get 11 radius cross sections along blade radial; Fan blade adopts antecurvature blade profile, and take the line of the center of circle and blade root leading edge point as reference line, the angle of the leading edge point in arbitrary cross section and the line in the center of circle and reference line is designated as the kyphotic angle in this cross section.Antecurvature angle from root to top vane is followed successively by 0 ° ,-2.4 ° ,-3.6 ° ,-3.7 ° ,-3 ° ,-1.6 °, 0.4 °, 2.7 °, 5.4 °, 8.2 ° and 11 °.Shown in the A2 among Fig. 1.
For obtaining stable flow field, and can move under the highest static pressure efficiency in that the operating mode (static pressure, flow) of appointment is lower, fan blade adopts and becomes the circular rector flow pattern, makes total head increase and take full advantage of the acting of leaf top along radius, and reduces the blade root load.From root of blade to the top, each cross section leaf grating established angle is followed successively by 26.7 °, 23.9 °, 21.6 °, 19.8 °, 18.2 °, 17 °, 15.9 °, 15 °, 14.2 °, 13.5 ° and 12.9 °; From root of blade to the top, each cross section leaf grating chord length is followed successively by 48.5mm, 51.1mm, 53mm, 54.4mm, 55.4mm, 55.9mm, 56.2mm, 56.1mm, 55.8mm, 55.3mm and 54.5mm.As shown in Figure 2.
The key data of the blade in the utility model is as shown in table 1.
Table 1
Claims (3)
1. Wind Volume low noise fan blade, by wheel hub, blade with protect solar or lunar halo and form one, by hitch bar and motor and wind shelling cover composition fan assembly, it is characterized in that: described blade is seven, seven blades are not equally spaced, and distribution angle is followed successively by 50.0 °, 51.5 °, 53.0 °, 54.5 °, 55.5 °, 47 ° and 48.5.
2. Wind Volume low noise fan blade as claimed in claim 1, it is characterized in that: described fan blade adopts antecurvature blade profile, take the line of the center of circle and blade root leading edge point as reference line, be designated as the kyphotic angle in this cross section with the angle of the line in the leading edge point in cross section and the center of circle and reference line, the antecurvature angle from root to top vane is followed successively by 0 ° ,-2.4 ° ,-3.6 ° ,-3.7 ° ,-3 ° ,-1.6 °, 0.4 °, 2.7 °, 5.4 °, 8.2 ° and 11 °.
3. Wind Volume low noise fan blade as claimed in claim 1, it is characterized in that: described fan blade adopts and becomes the circular rector flow pattern, from root of blade to the top, each cross section leaf grating established angle is followed successively by 26.7 °, 23.9 °, 21.6 °, 19.8 °, 18.2 °, 17 °, 15.9 °, 15 °, 14.2 °, 13.5 ° and 12.9 °; From root of blade to the top, each cross section leaf grating chord length is followed successively by 48.5mm, 51.1mm, 53mm, 54.4mm, 55.4mm, 55.9mm, 56.2mm, 56.1mm, 55.8mm, 55.3mm and 54.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220270921 CN202659569U (en) | 2012-06-08 | 2012-06-08 | Fan blade with high air quantity and low noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220270921 CN202659569U (en) | 2012-06-08 | 2012-06-08 | Fan blade with high air quantity and low noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202659569U true CN202659569U (en) | 2013-01-09 |
Family
ID=47454478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220270921 Expired - Lifetime CN202659569U (en) | 2012-06-08 | 2012-06-08 | Fan blade with high air quantity and low noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202659569U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195752A (en) * | 2013-04-03 | 2013-07-10 | 宁波朗迪叶轮机械有限公司 | Impeller for air conditioner |
| CN106089769A (en) * | 2016-07-27 | 2016-11-09 | 江苏超力电器有限公司 | A kind of big flow low noise automobile air conditioning system condenser fan |
-
2012
- 2012-06-08 CN CN 201220270921 patent/CN202659569U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195752A (en) * | 2013-04-03 | 2013-07-10 | 宁波朗迪叶轮机械有限公司 | Impeller for air conditioner |
| CN103195752B (en) * | 2013-04-03 | 2015-11-18 | 宁波朗迪叶轮机械有限公司 | A kind of impeller on air-conditioning |
| CN106089769A (en) * | 2016-07-27 | 2016-11-09 | 江苏超力电器有限公司 | A kind of big flow low noise automobile air conditioning system condenser 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: 20130109 |