CN202451470U - Automobile cooling fan with high blowing rate and low noise - Google Patents
Automobile cooling fan with high blowing rate and low noise Download PDFInfo
- Publication number
- CN202451470U CN202451470U CN2011204901009U CN201120490100U CN202451470U CN 202451470 U CN202451470 U CN 202451470U CN 2011204901009 U CN2011204901009 U CN 2011204901009U CN 201120490100 U CN201120490100 U CN 201120490100U CN 202451470 U CN202451470 U CN 202451470U
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- cooling fan
- low noise
- fan
- flabellum
- air quantity
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Abstract
The utility model discloses an automobile cooling fan with a high blowing rate and a low noise. The automobile cooling fan comprises a shield, fan blades and a motor, the ratio between inner diameter ID and outer diameter OD of the cooling fan is in a range from 0.37 to 0.41, and the number of the fan blades is in a range from 7 to 11. By means of the structure, performance requirements of the high blowing rate and low noise can be met, and the comfort of the whole automobile is improved.
Description
Technical field
The utility model belongs to the auto parts and components technology, be specifically related to a kind of in high speed operation the low cooling fan of noise.
Background technique
Tradition cooling fan design pursuit speed of cooling fan, air quantity simply; The general like this noise of cooling fan that causes is excessive; Cooling fan meeting high speed operation when the car load water temperature reaches uniform temperature; This just means that the passenger obviously experiences ear-piercing noise, has increased personnel's discomfort greatly.For thoroughly addressing this problem, improve the car load travelling comfort, reduce the noise of cooling fan to the full extent.The cooling fan that design has low noise is necessary.
For the automotive front end refrigerating module, it is to oppose each other that the air quantity of cooling fan and noise require, and when air quantity was big more, noise was just big more, so on both performance requirements, need a balance.
As shown in Figure 1, when new wind enters into cooling fan 3 from condenser 1 and radiator 2, certainly will have certain windage, and our cooling system needs cooling fan to provide certain air quantity to satisfy cooling performance.When big, needed heat exchange quantity is just big more for engine displacement and power ratio, thereby the air quantity of the fan that needs is just big more, and car load needs the cooling fan of big air quantity and low noise, and this requirement to cooling fan is very high.Therefore the cooling fan that designs a kind of novel big fan low noise is an emphasis, is again difficult point.
Just present used cooling fan, the principal element that influences its air quantity and noise is rotating speed and the blade structure of itself.The external diameter OD of traditional cooling fan is no more than 370mm; And fan blade 51 numbers are below 7; Be difficult to reach the effect of high air quantity low noise, have only to increase fan external diameter OD and select suitable flabellum number, can increase the air quantity of fan like this; Can reduce the rotating speed of fan, and noise decreases also.
Design, in use let the user experience and reach the purpose of cooling fan performance requirement to guarantee vehicle than low noise, thus the effect that improves the car load travelling comfort.
Summary of the invention
The utility model proposes a kind of automobile cooling fan of high air quantity low noise, with existing fan as a reference, designs the mutliblade cooling fan of large scale, thereby reaches the problem that solves at present general little air quantity of cooling fan or high noisy from root.
This cooling fan includes guard shield, flabellum and motor.Guard shield supports for flabellum and motor are provided; Motor provides the power of fan, drives the running of flabellum.To the little air quantity of present cooling fan or the problem of high noisy, our technological scheme is the diameter that increases flabellum, makes it to project to greatest extent the area maximization on the radiator, improves the area of fan, increases the number of blade simultaneously, makes noise minimization.
Concrete scheme is, in 0.37 ~ 0.41 scope, the sheet number of the blade of flabellum is designed to 7 ~ 11 with the boss ratio ID/OD design of the inner diameter, ID of flabellum and external diameter OD.
The design concept that is based on traditional axial flow fan of the utility model is optimized it, can improve the performance of cooling fan, to satisfy car load cooling requirement, can satisfy the NVH performance requirement again.
Description of drawings
Fig. 1 is the refrigerating module schematic representation.
Fig. 2 is cooling fan structure figure.
Fig. 3 is the blade structure figure of cooling fan.
Fig. 4 is the chart that the maximum quantity of wind of a demonstration cooling fan changes along with the size of flabellum external diameter.
Fig. 5 is the chart that the operation noise of a demonstration cooling fan changes along with the boss ratio of fan.
Fig. 6 is the chart that the operation noise of a demonstration cooling fan changes along with the blade number of flabellum.
Embodiment
In the utility model, cooling fan is designed to and can effectively the car outer air be drawn in the front end cooling system with cooler condenser and radiator.As shown in Figures 2 and 3; In the cooling fan of the utility model; The blade 51 of flabellum 5 be evenly distributed in motor 6 around, the outer ring of blade 51 connects through a ring 52, ring 52 is injection-moulded in all blades 51 one; Increase the intensity of flabellum 5, can increase the degree of balance of flabellum 5 again.
Fig. 4 is the chart that the maximum quantity of wind of a demonstration cooling fan changes along with the size of flabellum external diameter.This chart shows rotating speed one timing when flabellum 5, and when its external diameter OD was big more, air quantity of fan was also just big more, and when OD was 460mm, the maximum quantity of wind of fan had reached 2800m
3/ h.
Fig. 5 is the chart that the operation noise of a demonstration cooling fan changes along with the boss ratio of fan.This chart shows when the inner diameter, ID of flabellum 5 during than scope 0.37 ~ 0.41 of the boss ratio (ID/OD) of external diameter OD, fan noise≤71dB, and level of noise is in tolerance interval at this moment.And, can realize 69 decibels desirable minimum operation noise when boss ratio (ID/OD) when being set at 0.39.
Fig. 6 is the chart that the operation noise of a demonstration cooling fan changes along with the blade number of flabellum.This demonstration is worked as air quantity of fan and is reached 2800m
3When/h was above, the blade number was at 7 ~ 11 o'clock, fan noise≤71dB, and this moment, level of noise was in tolerance interval.And when blade sheet number is set at 9, can realize 69.5 decibels desirable minimum operation noise.
In the cooling fan of the utility model; The number of blade 51 is set at 9, and external diameter OD is set at 460mm, and inner diameter, ID is 180mm; Inner diameter, ID then is 0.39 with the ratio of external diameter OD; To reach the performance requirement that both satisfies high air quantity, can satisfy a kind of novel cooling fan that low noise properties requires again, and this is an optimal case.
Claims (4)
1. the automobile cooling fan of a high air quantity low noise, it comprises that guard shield (4), flabellum (5) and motor (6) form; It is characterized in that: the inner diameter, ID of said flabellum (5) and the boss ratio ID/OD of external diameter OD are 0.37 ~ 0.41; The sheet number of the blade of flabellum (51) is 7 ~ 11.
2. the automobile cooling fan of high air quantity low noise according to claim 1 is characterized in that: the boss ratio ID/OD of said flabellum (5) is set at 0.39.
3. the automobile cooling fan of high air quantity low noise according to claim 1 is characterized in that: the number of said blade (51) is set at 9, and external diameter OD is set at 460mm, and inner diameter, ID is 180mm.
4. the automobile cooling fan of high air quantity low noise according to claim 1 is characterized in that: the outer ring of all blades (51) is connected with a circle ring (52), their integrated injection moldings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204901009U CN202451470U (en) | 2011-11-30 | 2011-11-30 | Automobile cooling fan with high blowing rate and low noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204901009U CN202451470U (en) | 2011-11-30 | 2011-11-30 | Automobile cooling fan with high blowing rate and low noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202451470U true CN202451470U (en) | 2012-09-26 |
Family
ID=46867336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204901009U Expired - Lifetime CN202451470U (en) | 2011-11-30 | 2011-11-30 | Automobile cooling fan with high blowing rate and low noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202451470U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782111A (en) * | 2016-05-06 | 2016-07-20 | 浙江希尔富电气有限公司 | Blowing type wind wheel of brushless fan |
| CN105805045A (en) * | 2016-05-06 | 2016-07-27 | 浙江希尔富电气有限公司 | Air sucking type wind wheel of brushless draught fan |
-
2011
- 2011-11-30 CN CN2011204901009U patent/CN202451470U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782111A (en) * | 2016-05-06 | 2016-07-20 | 浙江希尔富电气有限公司 | Blowing type wind wheel of brushless fan |
| CN105805045A (en) * | 2016-05-06 | 2016-07-27 | 浙江希尔富电气有限公司 | Air sucking type wind wheel of brushless draught 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: 20120926 |