CN203321884U - Fan blade with fan shroud and twisted blades - Google Patents
Fan blade with fan shroud and twisted blades Download PDFInfo
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- CN203321884U CN203321884U CN2013203470230U CN201320347023U CN203321884U CN 203321884 U CN203321884 U CN 203321884U CN 2013203470230 U CN2013203470230 U CN 2013203470230U CN 201320347023 U CN201320347023 U CN 201320347023U CN 203321884 U CN203321884 U CN 203321884U
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Abstract
The utility model provides a fan blade with a fan shroud and twisted blades. The fan blade is characterized in that a hub, the blades and the fan shroud are combined into a whole and form a fan assembly with a motor and a fan cowl through a coupling device, the number of the blades is eight, the eight blades are distributed in an equally spaced manner, the distribution angles are 45 degrees, the fan blade is in a forward bending type, and the blades are designed along the blade height direction according to the variable circulation. The fan blade is used for a radiator fan, the radiating effect is relatively obviously improved, and the subjective comfort degree of human ears is improved.
Description
Technical field
The utility model relates to a kind of fan, relates in particular to the fan blade that a kind of band protects solar or lunar halo and twisted blade.
Background technique
Radiator fan is the important component part of automobile cooling system, and it has performance preferably General Requirements, and flow is large, and total head is high, and noise is little.Its structural type is fairly simple, generally several parts such as motor, fan blade, fan housings, consist of, but wherein the shape of structure and the profile of fan blade, particularly blade but changes a lot, and the aeroperformance of radiator fan is also played to conclusive effect.
The blade that at present radiator fans is used, be divided into prismatic blade and twisted blade from blade profile, from structure, is divided into that band protects solar or lunar halo and not with protecting solar or lunar halo.
For the automobile-used radiator fan, 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 efficiency is arranged, and requires again fan that lower noise is arranged simultaneously.And, along with scientific and technological progress, there has been more requirement in each car load manufacturing enterprise to acoustical mass now, not only requires global noise low, and require on noise spectrum, the noise difference of successive bands can not surpass certain limit value.Therefore, be necessary to provide a kind of new fan blade, to improve the heat radiation level, reduce noise, improve acoustical mass.
The model utility content
The purpose of this utility model, the fan blade in order to provide a kind of band to protect solar or lunar halo and twisted blade, for radiator fans, can improve radiating effect more significantly exactly, and improved people's ear subjective comfort.
In order to achieve the above object, the utility model has adopted following technological scheme: a kind of band protects the fan blade of solar or lunar halo and twisted 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, described blade is eight, eight blades are equally spaced, and distribution angle is 45 °.
Described fan blade adopts antecurvature blade profile, during blade design, equidistantly get 11 radius cross sections along blade radial, the line of the center of circle and blade root leading edge point of take is reference line, the angle of the line in the leading edge point in cross section and the center of circle and reference line is designated as to the kyphotic angle in this cross section, the antecurvature angle from root to top vane is followed successively by 0 ° ,-2.4 ° ,-2.66 ° ,-1.38 °, 0.48 °, 2.59 °, 4.78 °, 6.97 °, 9.14 °, 11.25 ° and 13.24 °.
Described blade by becoming the circular rector design, is followed successively by 35.3 °, 33.7 °, 31.7 °, 29.7 °, 28.1 °, 27 °, 26.1 °, 25.5 °, 25 °, 24.1 ° and 24.6 ° from root of blade to ，Ge cross section, top leaf grating established angle along the high direction of leaf; Be followed successively by 61.1mm, 67.6mm, 70.6mm, 71.2mm, 70.8mm, 69.6mm, 67.3mm, 64.1mm, 60mm, 54.4mm and 49mm from root of blade to ，Ge cross section, top leaf grating chord length.
Band of the present utility model protects the fan blade of solar or lunar halo and twisted blade owing to having adopted above technological scheme, have following advantage and and characteristics:
1. consider the requirement of noise level, the blade great majority of low-pressure shaft flow fan adopt twisted blade.This fan blade adopts twisted blade, has not only reduced the numerical value of noise, has more optimized the level of comfort of sound.
2. blade is suitably antecurvature can effectively suppress blade tip eddy, thereby contribute to delay " stall ", produces, and enlarges the steady working condition scope; In addition, the forward curved vane structure, by suitable antecurvature angle, can improve the intensity of blade, more plays the effect of optimizing flow field and optimizing noise.
3. vane tip adopts and protects the solar or lunar halo structure, improved blade strength, overcome when High Rotation Speed, the larger variation of the blade radially stretching antecurvature angle caused and vane airfoil profile established angle under centrifugal action, guaranteed that the ride quality of fan blade does not have large variation.Simultaneously, due to the support reinforcing effect of protecting solar or lunar halo, the irregular chatterin of blade while having overcome High Rotation Speed, avoided the extraordinary noise caused due to the blade shake, thereby optimized the level of comfort of sound.
4. the core of fan blade design is the vane type line design, this fan blade carries out the design of blade flow pattern according to the twisted blade theory, and, in conjunction with Aerodynamics, application becomes the circular rector Method for Flow Pattern Design, make the acting distribution of blade more meet the characteristics of motion, thereby given play to higher function conversion benefit.
The accompanying drawing explanation
Fig. 1 is the basic structure schematic diagram of the utility model band fan blade of protecting solar or lunar halo and twisted blade;
Fig. 2 is setting angle and the cross section chord length schematic diagram in 11 cross sections of the blade in the utility model.
Concrete form of implementation
Cooperation is referring to Fig. 1, Fig. 2, and the utility model band protects the fan blade of solar or lunar halo and twisted blade, 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, at the blade root place, with wheel hub 1, be connected, coupling structure 4 is arranged on wheel hub 1.Motor shaft is connected with fan blade by coupling structure 4, drives the fan blade rotation and carries air.In figure, 5 indications are the blade rotary direction.
For improving the acoustics performance of fan blade, blade adopts eight blades to be equally spaced, and distribution angle is 45 °.As shown in the A1 in Fig. 1.
Fan blade adopts antecurvature blade profile, during blade design, equidistantly get 11 radius cross sections along blade radial, the line of the center of circle and blade root leading edge point of take is reference line, the angle of the line in the leading edge point in cross section and the center of circle and reference line is designated as to the kyphotic angle in this cross section, the antecurvature angle from root to top vane is followed successively by 0 ° ,-2.4 ° ,-2.66 ° ,-1.38 °, 0.48 °, 2.59 °, 4.78 °, 6.97 °, 9.14 °, 11.25 ° and 13.24 °.As shown in the A2 in Fig. 1.
For the axial fan of small hub ratio, because blade is long, while the circular rector design such as pressing, blade is very large along the radius turn-knob, manufactures inconveniently, and performance is also good not, so design by becoming circular rector along the high direction of leaf.Total head is increased along radius, to take full advantage of the peripheral velocity of tip segment, and reduce the blade root load.Be followed successively by 35.3 °, 33.7 °, 31.7 °, 29.7 °, 28.1 °, 27 °, 26.1 °, 25.5 °, 25 °, 24.1 ° and 24.6 ° from root of blade to ，Ge cross section, top leaf grating established angle; Be followed successively by 61.1mm, 67.6mm, 70.6mm, 71.2mm, 70.8mm, 69.6mm, 67.3mm, 64.1mm, 60mm, 54.4mm and 49mm from root of blade to ，Ge cross section, top leaf grating chord length.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. a band protects the fan blade of solar or lunar halo and twisted blade, by wheel hub, blade with protect solar or lunar halo and form one, form fan assembly by hitch bar and motor and wind shelling cover, it is characterized in that: described blade is eight, eight blades are equally spaced, and distribution angle is 45 °.
2. band as claimed in claim 1 protects the fan blade of solar or lunar halo and twisted blade, it is characterized in that: described fan blade adopts antecurvature blade profile, during blade design, equidistantly get 11 radius cross sections along blade radial, the line of the center of circle and blade root leading edge point of take is reference line, the angle of the line in the leading edge point in cross section and the center of circle and reference line is designated as to the kyphotic angle in this cross section, the antecurvature angle from root to top vane is followed successively by 0 ° ,-2.4 ° ,-2.66 ° ,-1.38 °, 0.48 °, 2.59 °, 4.78 °, 6.97 °, 9.14 °, 11.25 ° and 13.24 °.
3. band as claimed in claim 1 protects the fan blade of solar or lunar halo and twisted blade, it is characterized in that: described blade designs by the change circular rector along the high direction of leaf, be followed successively by 35.3 °, 33.7 °, 31.7 °, 29.7 °, 28.1 °, 27 °, 26.1 °, 25.5 °, 25 °, 24.1 ° and 24.6 ° from root of blade to ，Ge cross section, top leaf grating established angle; Be followed successively by 61.1mm, 67.6mm, 70.6mm, 71.2mm, 70.8mm, 69.6mm, 67.3mm, 64.1mm, 60mm, 54.4mm and 49mm from root of blade to ，Ge cross section, top leaf grating chord length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203470230U CN203321884U (en) | 2013-06-17 | 2013-06-17 | Fan blade with fan shroud and twisted blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203470230U CN203321884U (en) | 2013-06-17 | 2013-06-17 | Fan blade with fan shroud and twisted blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203321884U true CN203321884U (en) | 2013-12-04 |
Family
ID=49661239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203470230U Expired - Lifetime CN203321884U (en) | 2013-06-17 | 2013-06-17 | Fan blade with fan shroud and twisted blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203321884U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2013
- 2013-06-17 CN CN2013203470230U patent/CN203321884U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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: 20131204 |