CN209781292U - Engine cooling fan - Google Patents
Engine cooling fan Download PDFInfo
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- CN209781292U CN209781292U CN201822080690.2U CN201822080690U CN209781292U CN 209781292 U CN209781292 U CN 209781292U CN 201822080690 U CN201822080690 U CN 201822080690U CN 209781292 U CN209781292 U CN 209781292U
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- fan
- engine cooling
- cooling fan
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Abstract
The utility model provides an engine cooling fan, includes wheel hub, evenly distributed in the flabellum of wheel hub periphery and the wind-guiding circle that is connected with the flabellum top, adjacent two be provided with the curved surface connector between the flabellum. According to the utility model provides a pair of engine cooling fan compares with prior art and has following advantage: the fan blade static pressure guide device can effectively reduce the bad vortex at the root of the fan blade, guide the low-speed airflow at the center of the fan to move to the top of the fan blade, avoid the jolt of the fan blade, has high stability and low noise, can effectively reduce the negative gain of the bad vortex, guide the airflow to the circumferential direction of the fan and has high fan static pressure efficiency.
Description
Technical Field
The utility model relates to an automobile engine cooling technology especially relates to an engine cooling fan.
Background
Engine cooling fans for automobiles generally include two main categories: one type is an open fan; one type is a ring fan. The open fan mainly comprises a hub and blades; the annular fan mainly comprises a hub, blades and a guide ring.
The hub of the traditional annular engine cooling fan is integrally cylindrical, the fan blades extend out from the outer peripheral surface of the cylindrical hub and stand on the hub, however, obvious dead angles exist at the root parts of the fan blades under the structural design, airflow easily forms larger vortex at the dead angles, and the fan is large in power consumption, easily causes jolt, large in noise and unstable. In order to reduce negative gain of bad vortex and improve static pressure efficiency, the improved annular engine cooling fan generally adopts a flat hub to overcome the defects of the traditional annular engine cooling fan. Further, in order to smoothly guide the airflow to the circumferential direction of the fan to improve the static pressure efficiency, more and more manufacturers have adopted a scheme of providing a flow guide structure on the fan blade to improve the flow field distribution of the fan.
For example, the chinese utility model with the license notice number of CN205592186U and the title of an automobile engine cooling fan discloses an automobile engine cooling fan, including layer board and the fan blade that distributes along the layer board circumference, the front of fan blade is the suction surface, the back of fan blade is the pressure surface, and this automobile engine cooling fan blows air to the pressure surface by the suction surface when rotating, the back of fan blade is equipped with the pressure surface water conservancy diversion muscle that carries out the water conservancy diversion to the air along the wind direction. The pressure surface flow guide rib is arranged at the tail end of the fan blade close to the supporting plate. The pressure surface flow guide ribs further extend to the tail ends of the fan blades adjacent to the pressure surface flow guide ribs along the wind direction. The tail end of the front side of each fan blade is provided with a flow guide surface which is bent towards the tail end of the front side of the adjacent fan blade, and the flow guide surface is bent along the wind direction and is integrated with the supporting plate. The utility model discloses a technical scheme that provides has following defect: the tail ends of the front faces of the fan blades are provided with the flow guide faces bent towards the tail ends of the front faces of the adjacent fan blades, however, a connecting structure is not arranged between the two adjacent fan blades, the mechanical strength of the fan blades is obviously low, jolting is easy to occur in the running process of the fan, the negative gain of bad vortex is obviously large, and the power consumption of the fan is high.
For another example, a chinese utility model patent with an authorization publication number of CN202182064U entitled cooling fan for vehicle discloses a cooling fan for vehicle, which includes a tray, a hub, a fan blade and a flow guide ring arranged in sequence from inside to outside, wherein the suction surface of the hub has a smooth plane, and the outer side of the hub is directly connected with the blade root of the fan blade. The diversion ribs of the pressure surfaces are positioned at the lowest position of the depression of the pressure surface of the fan blade and are deviated to one side of the hub, and the deflection direction from the end, close to the hub, of each diversion rib of each pressure surface to the end far away from the hub is the same as the rotation direction of the fan. And reinforcing ribs along the radial direction are also arranged between the middle part of the flow guide rib of each pressure surface and the hub. The utility model discloses a technical scheme that provides has following defect: and a connecting structure is not arranged between every two adjacent fan blades, the mechanical strength of the fan blades is obviously lower, the fan blades are easy to bump in the running process, the negative gain of poor vortex is obviously higher, and the power consumption of the fan is high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's not enough, provide one kind can effectively reduce the bad vortex of flabellum root, guide the low-speed air current at fan center to the flabellum top remove, avoid the flabellum to jolt, stability is high, small in noise, can effectively reduce the negative gain of bad vortex moreover, with the air current to the direction guide of fan circumference, the efficient engine cooling fan of static pressure.
The utility model discloses mainly adopt following technical scheme:
The utility model provides an engine cooling fan, includes wheel hub, evenly distributed in the flabellum of wheel hub periphery and the wind-guiding circle that is connected with the flabellum top, adjacent two be provided with the curved surface connector between the flabellum.
The curved surface connector is characterized by further comprising a flow guide rib plate, and the flow guide rib plate passes through the curved surface connector.
The flow guide rib plate is arranged on the pressure surface of the fan.
The flow guide rib plates are integrally y-shaped and extend on the surfaces of the fan blades along the radial direction of the fan.
The Y-shaped flow guide rib plates comprise first rib plates and second rib plates, and the length of the first rib plates is larger than that of the second rib plates.
Wherein, the first rib plate is a special-shaped curved surface.
The number of the first rib plates is multiple, and the diameter of a circle where the starting end of the first rib plates is located is 0.3-0.4 times of the diameter of the fan.
The diameter of a circle where the end ends of the first rib plates are located is 0.5 to 0.7 times of the diameter of the fan.
The number of the second rib plates is multiple, and the diameter of a circle where the starting end of the second rib plates is located is 0.3-0.4 times of the diameter of the fan.
The end of the second rib plate is connected with the middle of the first rib plate, and the first rib plate is divided into two sections.
Wherein the width of the root of the fan blade is smaller than the width of the top of the fan blade.
Wherein, be provided with at least one mounting hole on the wheel hub.
Wherein, still be provided with at least one on the wheel hub and put things in good order protruding.
According to the utility model provides a technical scheme has following beneficial effect: the structure design can well guide the low-speed airflow at the center of the fan to move to the top of the fan blade, so that the airflow at the root of the fan blade is spread as much as possible, the airflow flowing speed is increased, the wind speed is improved, the energy consumption is reduced, an obvious vortex is effectively prevented from being formed at the root of the fan blade, the fan is prevented from bumping in the operation process, and the noise is reduced; the flow guide rib plates pass through the curved surface connecting body, so that diffused airflow can be effectively corrected to move along the circumferential direction of the fan, negative gain of bad eddy is reduced, and static pressure efficiency of the fan is improved; the flow guide rib plate is arranged on the pressure surface of the fan, so that the burden of the fan when cutting airflow can be effectively reduced, and the generation of turbulent flow is reduced; the whole flow guide rib plate is Y-shaped and extends on the surface of the fan blade along the radial direction of the fan, the convex surface of the first rib plate in a wave-shaped cambered surface corresponds to the windward side of the fan blade, and the positions of the starting end and the ending end of the first rib plate are arranged so as to better correct the direction of air flow; the root width of flabellum is less than the top width of flabellum and is provided with on the flabellum and cuts the wind protruding, is favorable to cutting the air, reduces the resistance.
Drawings
Fig. 1 is a schematic view of a pressure surface of the fan of the present invention.
Fig. 2 is a schematic view of the suction surface of the fan of the present invention.
Fig. 3 is a side sectional view of the fan of the present invention, wherein arrows represent wind directions.
Fig. 4 is a structural schematic view of a y-shaped flow guide rib plate.
1 hub, 10 mounting holes, 11 stacking bulges, 2 fan blades, 20 curved surface connectors, 21 air cutting bulges, 3 flow guide rib plates, 31 first rib plates, 311 starting ends of the first rib plates, 312 ending ends of the first rib plates, 32 second rib plates, 321 starting ends of the second rib plates, 322 ending ends of the second rib plates and 4 air guide rings.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
Referring to fig. 1, an engine cooling fan includes a hub 1, fan blades 2 uniformly distributed on the periphery of the hub 1, and an air guide ring 4 connected to the top ends of the fan blades 2, wherein a curved surface connector 20 is disposed between two adjacent fan blades 2. Preferably, the position of the curved surface connector 20 corresponds to the root position of the fan blade 2. Preferably, the curved connector 20 can guide the low-speed airflow at the center of the fan to move to the top position of the fan blade, and more preferably, the curved connector 20 is a curved connector with a smooth surface. This kind of structural design can guide the low-speed air current at fan center well to the top position removal of flabellum, makes the air current of flabellum root expand the scattering as far as possible, has increased the gas flow speed, is favorable to improving the wind speed, reduces the energy consumption, moreover, has avoided forming obvious vortex at the flabellum root effectively, prevents that the fan operation in-process from taking place to jolt, has reduced the noise.
Referring to fig. 1, 3 and 4, the curved surface connector further comprises flow guiding rib plates 3, and the flow guiding rib plates 3 pass through the curved surface connector 20. Preferably, the flow guide rib plate 3 is a cambered and/or planar rib plate, and more preferably, the flow guide rib plate 3 is a cambered rib plate. The structural design effectively weakens or eliminates negative gain caused by bad vortex at the root of the fan blade, guides air flow, improves the smooth degree of fan operation and reduces the power consumption of the fan.
Referring to fig. 3, the air guide rib plate 3 is arranged on the pressure surface of the fan. Preferably, the air guide rib plate 3 stands on the surface of the fan blade 2. Preferably, when the fan blades 2 are obliquely arranged on the hub 1, the flow guiding rib plates 3 may also form a certain angle with the fan blades 2 along with the arrangement of the fan blades. The structural design can effectively reduce the burden of the fan when cutting airflow and reduce the generation of turbulent flow.
Referring to fig. 1 and 4, the flow guide rib plate 3 is integrally y-shaped and extends on the surface of the fan blade 2 along the radial direction of the fan. Preferably, the orthographic projection of the flow guide rib plate 3 is in a y shape. The structural design not only has good guiding effect on air flow, but also can effectively increase the mechanical strength of the connection part of the fan blade and the hub. Preferably, each fan blade 2 mainly corresponds to a "y" type flow guiding rib plate 3. This structural design effectively corrects the diffused airflow to move in the circumferential direction of the fan, reducing the negative gain of undesirable vortices, while improving the static pressure efficiency of the fan.
Referring to fig. 1 and 4, the y-shaped air guide rib plate 3 comprises a first rib plate 31 and a second rib plate 32, and the length of the first rib plate 31 is greater than that of the second rib plate 32. Preferably, the second rib 32 is used for enhancing the mechanical strength of the connection between the fan blade 2 and the hub 1. Preferably, the first rib 31 may span to the adjacent fan blade 2.
Referring to fig. 4, the first rib 31 has a special curved surface. Preferably, the first rib 31 is a wave-shaped arc surface, and more preferably, the convex surface of the wave-shaped arc surface corresponds to the windward side of the fan blade 2. Preferably, the first rib 31 passes through the curved connecting body 20. Preferably, the orthographic projection of the first rib 31 extends from the windward side of the fan blade 2 to the leeward side of the fan blade 2.
Referring to fig. 1 and 4, the number of the first rib plates 31 is multiple, and the diameter of a circle where the starting ends 311 of the multiple first rib plates are located is 0.3 to 0.4 times of the diameter of the fan.
referring to fig. 1 and 4, the diameter of the circle where the ending ends 312 of the plurality of first ribs are located is 0.5 to 0.7 times the diameter of the fan.
Referring to fig. 1 and 4, the number of the second rib plates 32 is multiple, and the diameter of a circle where the starting ends 321 of the second rib plates are located is 0.3 to 0.4 times of the diameter of the fan.
Referring to fig. 1 and 4, the ending end 322 of the second rib is connected to the middle of the first rib 31 and divides the first rib 31 into two sections. Preferably, the first rib plate 31 is a wave-shaped cambered surface, and the end 322 of the second rib plate divides the first rib plate into an upper section and a lower section, wherein the arc length of the upper section of the right section of the first rib plate 31 is 0.5 +/-0.2 times of the integral arc length of the first rib plate.
Referring to fig. 1 and 2, the width of the root of the fan blade 2 is smaller than the width of the top of the fan blade 2. Preferably, the fan blade 2 is curved as a whole. Preferably, the top of fan blade 2 has a wind cutting protrusion 21, which is beneficial to cutting air, reducing resistance and reducing jolt during the operation of the fan.
Referring to fig. 1 and 2, at least one mounting hole 10 is formed in the hub 1. The engine cooling fan is fitted to the engine cooling apparatus through the mounting hole. Preferably, a tray is also included, which is connected to the hub 1, and the mounting holes 10 are provided on the tray.
Referring to fig. 2 and 3, at least one stacking projection 11 is further arranged on the hub 1. The structural design facilitates the stacking and transportation of bulk goods.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (13)
1. The utility model provides an engine cooling fan, includes wheel hub, evenly distributed in the flabellum of wheel hub periphery and the wind-guiding circle that is connected with the flabellum top, its characterized in that: and a curved surface connector is arranged between every two adjacent fan blades.
2. The engine cooling fan of claim 1, wherein: the curved surface connector is characterized by further comprising a flow guide rib plate, and the flow guide rib plate passes through the curved surface connector.
3. The engine cooling fan of claim 2, wherein: the flow guide rib plate is arranged on the pressure surface of the fan.
4. The engine cooling fan according to claim 2 or 3, characterized in that: the flow guide rib plates are integrally y-shaped and extend on the surfaces of the fan blades along the radial direction of the fan.
5. The engine cooling fan of claim 4, wherein: the flow guide rib plates comprise first rib plates and second rib plates, and the length of the first rib plates is larger than that of the second rib plates.
6. The engine cooling fan of claim 5, wherein: the first rib plate is a special-shaped curved surface.
7. The engine cooling fan according to claim 5 or 6, characterized in that: the number of the first rib plates is multiple, and the diameter of a circle where the starting end of the first rib plates is located is 0.3-0.4 times of the diameter of the fan.
8. The engine cooling fan of claim 7, wherein: the diameter of a circle where the end ends of the first rib plates are located is 0.5 to 0.7 times of the diameter of the fan.
9. The engine cooling fan of any one of claims 5, 6, or 8, wherein: the number of the second rib plates is multiple, and the diameter of a circle where the starting end of the second rib plates is located is 0.3-0.4 times of the diameter of the fan.
10. The engine cooling fan of claim 9, wherein: the end of the second rib plate is connected with the middle part of the first rib plate, and the first rib plate is divided into two sections.
11. The engine cooling fan of claim 1, wherein: the root width of the fan blade is smaller than the top width of the fan blade.
12. The engine cooling fan of claim 1, wherein: the hub is provided with at least one mounting hole.
13. The engine cooling fan of claim 1, wherein: the hub is also provided with at least one stacking protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822080690.2U CN209781292U (en) | 2018-12-12 | 2018-12-12 | Engine cooling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822080690.2U CN209781292U (en) | 2018-12-12 | 2018-12-12 | Engine cooling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209781292U true CN209781292U (en) | 2019-12-13 |
Family
ID=68789780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822080690.2U Active CN209781292U (en) | 2018-12-12 | 2018-12-12 | Engine cooling fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209781292U (en) |
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2018
- 2018-12-12 CN CN201822080690.2U patent/CN209781292U/en active Active
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