CN104696276B - Fan - Google Patents
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- Publication number
- CN104696276B CN104696276B CN201510078858.4A CN201510078858A CN104696276B CN 104696276 B CN104696276 B CN 104696276B CN 201510078858 A CN201510078858 A CN 201510078858A CN 104696276 B CN104696276 B CN 104696276B
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- CN
- China
- Prior art keywords
- wheel hub
- ridge
- fan
- air
- hub
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
- F04D29/329—Details of the hub
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of fans, there is air return in hub portion to solve existing fan, the shortcomings that reducing air quantity of fan, the present invention provides a kind of fan, it includes wheel hub and multiple circumferentially distributed blades being fixedly connected on wheel hub, it is aweather fanned in wheel hub surface and multiple circumferentially distributed ridges is equipped on the side of air side, the trend of ridge is directed toward the center of wheel hub from the outer rim of wheel hub.In the present invention, during fan rotation, the ridge on wheel hub can flow air in wheel hub air side, the pressure that wind pressure improves wheel hub outlet air side end face is generated, reduces its pressure difference with peripheral region, and then reduce reflux, air quantity is increased, improves fan efficiency.
Description
Technical field
The present invention relates to a kind of blowing device more particularly to a kind of fans.
Background technology
Traditional cooling aerofoil fan includes wheel hub and multiple blades, and wheel hub is in the form of annular discs, and center is fan installing zone
Domain, for being connect with the driving equipment that driving fan rotates, the outer rim annular section of wheel hub is the installation region of blade, and blade is solid
Surely it is connected to the installation region.Fan is driven in driving equipment during rotation work, and fan blade rotation forces air to flow, from
The air side outflow of fan, but due to existing fan in entire wheel hub in tabular, will not be generated in the outlet air surface of hub portion
Wind pressure, therefore the pressure of wheel hub outlet air side end face is lower than the pressure of peripheral region, causes attached in the wheel hub end face of fan air side
It is near to generate reflux, the air quantity of fan is reduced, reduces the efficiency of fan, and this is because the structure of traditional fan hub is set
Meter only considered the mounting means of fan blade, not consider how the generation of anti-backflow.
Invention content
It is an object of the invention to be directed to existing fan there is air return in hub portion, lacking for air quantity of fan is reduced
It puts and a kind of fan that can be effectively prevent fan hub region air return, improve air quantity of fan is provided.
The technical proposal of the invention is realized in this way：A kind of fan is provided, including wheel hub with it is multiple circumferentially distributed solid
Surely the blade being connected on wheel hub is aweather fanned in wheel hub surface and multiple circumferentially distributed ridges is equipped on the side of air side,
The trend of ridge is directed toward the center of wheel hub from the outer rim of wheel hub.In the present invention, during fan rotation, on wheel hub
Ridge can flow air in wheel hub air side, generate the pressure that wind pressure improves wheel hub outlet air side end face, reduce
Its pressure difference with peripheral region, and then reduce reflux, air quantity is increased, improves fan efficiency.
In the present invention as stated above, wheel hub is equipped with recess corresponding with ridge in its windward side, and recess makes the ridge be
It is in homogeneous thickness shelly-shaped.Ridge is distributed in the annular section of wheel hub outer rim, and the end face of ridge towards hub centre is
Closed end, ridge overhead height are continuously decreased from wheel hub outer rim to hub centre direction, and ridge is towards in wheel hub
The centre of the end face of the heart and wheel hub air outlet side, the two sides of ridge connect to smoothly transit, blade fixed installation
On the side of ridge, the shank of blade is fixed in wheel hub side windward namely recess, which can improve wheel hub
The air flow property of air side avoids generating noise.The side that wind pressure is generated when ridge rotates is inclined plane.Wheel hub
Windward side is plane.
The present invention has the advantage that compared with prior art：Ridge is equivalent to one in hub rotation on wheel hub
A vanelets, when wheel hub rotates, these ridges for being similar to vanelets will flow air, generate pressure, so as to
The pressure of wheel hub outlet air side end face is improved, its pressure difference with peripheral region is reduced, and then reduce reflux, increases wind
Amount, improves fan efficiency.
Description of the drawings
Fig. 1 is the structure diagram of fan of the present invention；
Fig. 2 is the wheel hub side view of fan of the present invention；
Fig. 3 is the wheel hub back side (windward side) structure diagram of fan of the present invention；
Fig. 4 is the wheel hub of fan of the present invention and blade assembling schematic diagram；
Fig. 5 is positive (air side) structure diagram of wheel hub of fan of the present invention；
Fig. 6 is the wheel hub rear elevation view of fan of the present invention.
Parts title and serial number in figure：
1-wheel hub, 2-blade, 11-blade assembling side, 12-reinforcement side, 13-sealing end, 11a-assembling side appearance
Face, 12a-reinforcement side external surface, 13a-sealing end lateral surface, 14a-wheel hub air outlet side, 11b-assembling side inner surface,
12b-reinforcement side inner surface, 13b-sealing end medial surface, 14b-wheel hub side windward.
Specific embodiment
Illustrate specific embodiment below in conjunction with the accompanying drawings.
As shown in Figures 1 to 6, the fan in the present embodiment includes wheel hub 1 and circumferentially distributed is fixedly connected on wheel hub with multiple
On blade 2.As shown in Figure 1, wheel hub 1 is substantially disc-shaped, central area is equipped with bolt mounting holes, for turning with driving fan
Dynamic driving equipment such as hydraulic motor, motor or engine connection region, wheel hub 1 towards the side of fan outlet air be wheel hub
The front of air outlet side 14a namely wheel hub, the face of side namely the back side of wheel hub are wheel hub side 14b windward to wheel hub windward.Such as
Shown in Fig. 2, there are multiple ridges on the 14a of wheel hub air outlet side, which is distributed in 1 peripheral annual region of wheel hub
It is interior and circumferentially distributed around the center of wheel hub 1.As shown in figure 3, there are multiple recess on wheel hub windward side 14b, it is each to be recessed
It is corresponding with a ridge, recess so that ridge in homogeneous thickness shelly-shaped, and ridge is towards in wheel hub
The end face of heart side is the sealing end 13 of closing；As shown in figure 5, from wheel hub outer rim to hub centre region side at the top of ridge
It is continuously decreased to its height.As shown in figure 4, the side in ridge is provided with mounting hole, connected for being installed with blade 2,
The side forms blade assembling side 11, and then adding for booster action is played in structure blade pair assembling side 11 to the other side of ridge
Strong side 12.Blade assembling side 11, strengthen side 12,13 three of sealing end towards fan air side side side be respectively assemble side
Outer surface 11a, strengthen side external surface 12a, sealing end lateral surface 13a, blade assembling side 11, strengthen side 12, sealing end 13 it is another
Outer one side is respectively then assembling side inner surface 11b, reinforcement side inner surface 12b, sealing end inside towards the side of windward side
Face 13b, wherein sealing end lateral surface 13a and assembling side external surface 11a, reinforcement side external surface 12a and wheel hub air outlet side 14a
Between connection to smoothly transit connection.As shown in figure 4, the shank of blade 2 is located in the recess of the windward side of wheel hub, pass through spiral shell
The fasteners such as bolt or rivet are fixedly mounted on the assembling side inner surface 11b of blade assembling side.As shown in Fig. 2 Fig. 6, wheel hub is windward
Side 14b is still plane, and the assembling side external surface 11a of ridge is inclined plane, the plane and wheel hub air outlet side 14a
Between have a plane included angle, the angle α be acute angle, as shown in Fig. 2, the plane can be to wheel hub air outlet side in hub rotation
Air compressing generates wind pressure, plays the role of vanelets, improves the pressure of wheel hub air outlet side, prevents air in place in wheel hub institute
Put generation air return.
Claims (5)
1. a kind of fan, including wheel hub and multiple circumferentially distributed blades being fixedly connected on wheel hub, it is characterised in that in wheel hub
Multiple circumferentially distributed ridges are equipped with towards the side of fan air side, the trend of the ridge is from outside wheel hub
Edge is directed toward the center of wheel hub；The blade is fixed on the side of wheel hub windward；The ridge is distributed in the ring of wheel hub outer rim
Shape region, the ridge are closed end towards the end face of hub centre, and the ridge is towards the end of hub centre
Face is connect with the centre of wheel hub air outlet side, the two sides of ridge to smoothly transit.
2. fan according to claim 1, it is characterised in that the wheel hub is equipped with corresponding with ridge in its windward side
Recess.
3. fan according to claim 1, it is characterised in that the ridge overhead height is from wheel hub outer rim to wheel hub
Center position continuously decreases.
4. fan according to any one of claim 1 to 3, it is characterised in that generate wind pressure during the ridge rotation
Side be inclined plane.
5. fan according to any one of claim 1 to 3, it is characterised in that the wheel hub windward side is plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510078858.4A CN104696276B (en) | 2015-02-13 | 2015-02-13 | Fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510078858.4A CN104696276B (en) | 2015-02-13 | 2015-02-13 | Fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104696276A CN104696276A (en) | 2015-06-10 |
| CN104696276B true CN104696276B (en) | 2018-07-06 |
Family
ID=53343719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510078858.4A Active CN104696276B (en) | 2015-02-13 | 2015-02-13 | Fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104696276B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11547050B1 (en) * | 2021-08-17 | 2023-01-10 | Deere & Company | Extractor fan assembly with clamshell hub |
-
2015
- 2015-02-13 CN CN201510078858.4A patent/CN104696276B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104696276A (en) | 2015-06-10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |