CN213808198U - Sweepforward type large-air-volume fan blade with noise reduction function - Google Patents
Sweepforward type large-air-volume fan blade with noise reduction function Download PDFInfo
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- CN213808198U CN213808198U CN202023028052.XU CN202023028052U CN213808198U CN 213808198 U CN213808198 U CN 213808198U CN 202023028052 U CN202023028052 U CN 202023028052U CN 213808198 U CN213808198 U CN 213808198U
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Abstract
The utility model discloses a sweepforward type large-air-volume fan blade with noise reduction function, which comprises a fan blade main body, wherein the fan blade main body comprises a fan blade hub and a plurality of blades; all the blades are fixed or formed on the outer side wall of the wind impeller hub; a fan blade included angle of 30-40 degrees is formed between the blade and the horizontal plane; a noise reduction tooth socket is formed on the air outlet edge of the blade; the wind impeller hub is a cylindrical barrel, a connecting sleeve body is formed in the middle of the inner wall surface of an end plate of the wind impeller hub, a motor shaft hole is formed in the middle of the connecting sleeve body, and the motor shaft hole extends out of the end plate of the wind impeller hub; a plurality of reinforcing ribs are formed between the outer side wall of the connecting sleeve body and the inner side wall of the wind turbine hub, and the inner wall surfaces of the reinforcing ribs are formed on the inner wall surface of an end plate of the wind turbine hub. The tooth's socket of making an uproar falls in the last setting of its blade to reduce the noise of blade operation, simultaneously, its impeller hub is the cylinder barrel, makes its stable in structure, and firm degree is high, and its noise is little when operation moreover, and is effectual.
Description
The technical field is as follows:
the utility model relates to a fan equipment field, more specifically say and relate to a sweep forward big amount of wind area and fall noise function fan blade.
Background art:
in current fan wheel, its fan blade can produce a large amount of noises when the operation, and its problem of making an uproar falls can't be solved always, and simultaneously, its fan wheel hub generally is the flat circular cover body, and its intensity is low, and wind-guiding effect is poor, and simultaneously, the end cover of fan wheel hub generally is the plane lid, and its water conservancy diversion effect is poor, and the strengthening rib of current fan wheel hub generally is on the lateral wall moreover, and it makes the operation, produces more turbulent flows, and the noise abatement influences the result of use.
The utility model has the following contents:
the utility model aims at overcoming prior art not enough, providing a sweep forward big amount of wind area and fall noise function fan blade, set up on its blade and fall the tooth's socket of making an uproar to reduce the noise when blade operation, simultaneously, its fan wheel hub is the cylinder barrel, makes its stable in structure, and firm degree is high, and the noise is little when its operation moreover, and is effectual.
The utility model provides a technical problem's scheme is:
a sweepforward type large-air-volume fan blade with a noise reduction function comprises a fan blade main body, wherein the fan blade main body comprises a fan blade hub and a plurality of blades;
all the blades are fixed or formed on the outer side wall of the wind impeller hub;
a fan blade included angle of 30-40 degrees is formed between the blade and the horizontal plane;
a noise reduction tooth socket is formed on the air outlet edge of the blade;
the wind impeller hub is a cylindrical barrel, a connecting sleeve body is formed in the middle of the inner wall surface of an end plate of the wind impeller hub, a motor shaft hole is formed in the middle of the connecting sleeve body, and the motor shaft hole extends out of the end plate of the wind impeller hub;
a plurality of reinforcing ribs are formed between the outer side wall of the connecting sleeve body and the inner side wall of the wind turbine hub, and the inner wall surfaces of the reinforcing ribs are formed on the inner wall surface of an end plate of the wind turbine hub.
The blade root of the blade is formed on the outer side wall of the wind impeller hub, five blades are formed on the outer side wall of the wind impeller hub, and all the blades are uniformly distributed on the outer side wall of the wind impeller hub by taking the central axis of the wind impeller hub as the center.
The top surface of one end of the reinforcing rib strip, which is close to the inner side wall of the wind turbine hub, extends upwards, and the height of the reinforcing rib strip, which is formed at one end of the inner side wall of the wind turbine hub, is greater than the height of the reinforcing rib strip, which is formed at one end of the outer side wall of the connecting sleeve body.
A diversion cover fixing stud is formed on part of the reinforcing ribs, and a screw connection hole is formed in the middle of the diversion cover fixing stud.
The bottom end face of the wind wheel hub is covered with the flow guide cover, a plurality of fixing studs are formed on the inner end face of the flow guide cover, middle connecting threaded through holes are formed in the fixing studs, one ends of the middle connecting threaded through holes extend out of the outer end face of the flow guide cover, and the other ends of the middle connecting threaded through holes are aligned and communicated with corresponding threaded holes.
And a middle spherical bulge which bulges outwards is formed in the middle of the outer end surface of the flow guide cover.
A plurality of limiting pieces are formed on the edge of the inner wall surface of the flow guide cover, the limiting pieces are clamped on the inner side wall of the wind wheel hub, a plurality of limiting protruding portions are formed on the inner side wall of the wind wheel hub, and one side edge of each limiting piece is tightly attached to the side wall of the corresponding limiting protruding portion.
Two guide wing strips are formed on the bottom surface of the outer edge of the blade, and extend from one side of the air outlet edge of the blade to the air inlet edge of the blade along with the outer edge.
And an outer weight reduction groove is formed on the outer side wall of the wind impeller hub at the position of the limiting convex part.
A plurality of noise reduction tooth sockets are formed on the wall surface of the edge part of one side of the air outlet edge of the blade, which is close to the outer edge, and the noise reduction tooth sockets are opposite to the two guide wing strips;
the tooth space angle between the two inner side walls of the noise reduction tooth space is 50-70 degrees.
The utility model discloses an outstanding effect is:
1. compared with the prior art, a plurality of noise reduction tooth grooves are formed on the wall surface of the edge part of one side of the air outlet edge of the blade, which is close to the outer edge, so that the rotating noise reduction effect of the blade is realized; the wind impeller hub is a cylindrical barrel, a fan blade included angle of 30-40 degrees is formed between the fan blade and the horizontal plane, the effective output wind quantity of the fan blade during operation is ensured, and the wind impeller hub is firm in structure and high in strength; the included angle of the fan blades is between 30 degrees and 40 degrees, the section angles of all points of the fan blades have no large difference, the air flow shape is well combed, the turbulent flow is reduced, and the efficiency is improved.
2. The reinforcing ribs of the wind turbine hub are arranged inside the wind turbine hub, so that turbulence is reduced, and running noise is greatly reduced.
3. The middle part of the outer end surface of the flow guide cover is provided with an outward convex middle spherical surface bulge, so that the arc-shaped flow guide effect of the flow guide cover is increased, the turbulent flow is further reduced, and the efficiency is improved.
4. The guide vane can increase the strength without increasing the thickness of the vane, reduce the dead weight while ensuring the air quantity, and realize energy conservation.
Description of the drawings:
FIG. 1 is a schematic view of a partial structure of the present invention without a diversion cover;
FIG. 2 is a schematic view of the angle change structure of FIG. 1;
FIG. 3 is a partial side view of the present invention without the deflector cap installed;
fig. 4 is a partial rear view of the present invention;
FIG. 5 is a side view of the deflector cap;
FIG. 6 is a partial structural view of the deflector cap;
fig. 7 is a schematic view of the angle-changed partial structure of fig. 6.
The specific implementation mode is as follows:
in an embodiment, as shown in fig. 1 and 7, a forward-swept type large-air-volume fan blade with a noise reduction function comprises a fan blade main body 10, wherein the fan blade main body 10 comprises a fan blade hub 20 and a plurality of blades 11;
all the blades 11 are fixed or formed on the outer side wall of the wind turbine hub 20;
a fan blade included angle 2 of 30-40 degrees is formed between the blade 11 and the horizontal plane;
a noise reduction tooth groove 3 is formed on the air outlet edge 113 of the blade 11;
the wind impeller hub 20 is a cylindrical barrel, a connecting sleeve body 21 is formed in the middle of the inner wall surface of an end plate of the wind impeller hub, a motor shaft hole 22 is formed in the middle of the connecting sleeve body 21, and the motor shaft hole 22 extends out of the end plate of the wind impeller hub 20; a key groove is formed on the inner side wall of the motor shaft hole 22.
A plurality of reinforcing ribs 23 are formed between the outer side wall of the connecting sleeve body 21 and the inner side wall of the wind impeller hub 20, and the inner wall surfaces of the reinforcing ribs 23 are formed on the inner wall surfaces of the end plates of the wind impeller hub 20.
Further, the blade root 112 of the blade 11 is formed on the outer side wall of the wind turbine hub 20, five blades 11 are formed on the outer side wall of the wind turbine hub 20, and all the blades 11 are uniformly distributed on the outer side wall of the wind turbine hub 20 with the central axis of the wind turbine hub 20 as the center.
Furthermore, the top surface of the end of the reinforcing rib 23 close to the inner side wall of the wind turbine hub 20 extends upward, and the height of the end of the reinforcing rib 23 formed on the inner side wall of the wind turbine hub 20 is greater than the height of the end of the reinforcing rib 23 formed on the outer side wall of the connecting sleeve body 21.
Furthermore, a diversion cover fixing stud 231 is formed on part of the reinforcing rib 23, and a screw hole is formed in the middle of the diversion cover fixing stud 231.
Furthermore, the bottom end face of the wind turbine hub 20 is covered with the flow guide cover 30, a plurality of fixing studs 31 are formed on the inner end face of the flow guide cover 30, middle connection screw joint through holes 311 are formed on the fixing studs 31, one end of each middle connection screw joint through hole 311 extends out of the outer end face of the flow guide cover 30, the other end of each middle connection screw joint through hole 311 is aligned and communicated with a corresponding screw joint hole, and screws of the fixing bolts are screwed in the screw joint holes on the middle connection screw joint through holes 311 and the corresponding flow guide cover fixing studs 231 to realize fixed connection.
Further, a middle spherical protrusion 32 protruding outwards is formed in the middle of the outer end surface of the flow guiding cover 30.
Furthermore, a plurality of limiting pieces 33 are formed at the edge of the inner wall surface of the deflector cover 30, the limiting pieces 33 are clamped on the inner side wall of the impeller hub 20, a plurality of limiting protrusions 24 are formed on the inner side wall of the impeller hub 20, and one side edge of each limiting piece 33 is tightly attached to the corresponding side wall of the limiting protrusion 24.
Furthermore, two guide vanes 1 are formed on the bottom surface of the outer edge 111 of the blade 11, and the guide vanes 1 extend from the side of the air outlet edge 113 of the blade 11 to the air inlet edge 114 of the blade 11 along with the outer edge 111.
Furthermore, an outer weight-reducing groove 25 is formed on the outer side wall of the wind turbine hub 20 at the position of the limiting convex part 24, so that the weight can be reduced.
Furthermore, a plurality of noise reduction tooth sockets 3 are formed on the wall surface of the edge part of the side of the air outlet edge 113 of the blade 11 close to the outer edge 111, and the noise reduction tooth sockets 3 face two guide vanes 1;
the tooth space angle 4 between the two inner side walls of the noise reduction tooth space 3 is 50 to 70 degrees. The bottom surface of the side wall of the noise reduction tooth groove 3 is an oblique guide wall surface to ensure that wind has better wind conductivity when flowing, and the noise reduction tooth groove 3 adopts a bionic eagle wing tail-shaped tooth groove and can change the distribution rule of the flow field noise peak value according to the sawtooth structure at the tail edge of the blade, so that the noise peak value is reduced, and noise reduction is realized.
In this embodiment, the impeller hub 20 is a cylindrical barrel, and a blade angle of 25 to 42 degrees is formed between the blade 11 and the horizontal plane, i.e., the end surface of the impeller hub 20, so as to ensure the effective output air volume of the blade during operation, and the impeller hub 20 is a cylindrical barrel with firm structure and high strength. The reinforcing ribs 23 of the wind turbine hub 20 are internal, thereby reducing turbulence and greatly reducing operational noise. The middle part of the outer end surface of the diversion cover 30 is formed with a middle spherical bulge which bulges outwards, so that the arc diversion effect of the diversion cover is increased, the turbulent flow is further reduced, and the efficiency is improved. The guide vane 1 can increase the strength without increasing the thickness of the vane 11, ensure the air quantity, reduce the dead weight and realize energy conservation.
Claims (10)
1. The utility model provides a big amount of wind of sweepforward area noise reduction function fan blade, includes fan blade main part (10), its characterized in that: the fan blade main body (10) comprises a fan blade hub (20) and a plurality of blades (11);
all the blades (11) are fixed or formed on the outer side wall of the wind turbine hub (20);
a fan blade included angle (2) of 30-40 degrees is formed between the blade (11) and the horizontal plane;
a noise reduction tooth groove (3) is formed on the air outlet edge (113) of the blade (11);
the wind impeller hub (20) is a cylindrical barrel, a connecting sleeve body (21) is formed in the middle of the inner wall surface of an end plate of the wind impeller hub, a motor shaft hole (22) is formed in the middle of the connecting sleeve body (21), and the motor shaft hole (22) extends out of the end plate of the wind impeller hub (20);
a plurality of reinforcing ribs (23) are formed between the outer side wall of the connecting sleeve body (21) and the inner side wall of the wind turbine hub (20), and the inner wall surfaces of the reinforcing ribs (23) are formed on the inner wall surfaces of end plates of the wind turbine hub (20).
2. The swept-forward large-air-volume fan blade with the noise reduction function according to claim 1, is characterized in that: the blade root (112) of the blade (11) is formed on the outer side wall of the wind impeller hub (20), five blades (11) are formed on the outer side wall of the wind impeller hub (20), and all the blades (11) are uniformly distributed on the outer side wall of the wind impeller hub (20) by taking the central axis of the wind impeller hub (20) as the center.
3. The swept-forward large-air-volume fan blade with the noise reduction function according to claim 1, is characterized in that: the top surface of one end of the reinforcing rib (23) close to the inner side wall of the wind turbine hub (20) extends upwards, and the height of one end, formed on the inner side wall of the wind turbine hub (20), of the reinforcing rib (23) is larger than that of one end, formed on the outer side wall of the connecting sleeve body (21), of the reinforcing rib (23).
4. The swept-forward large-air-volume fan blade with the noise reduction function according to claim 3, is characterized in that: a diversion cover fixing stud (231) is formed on part of the reinforcing ribs (23), and a screw hole is formed in the middle of the diversion cover fixing stud (231).
5. The swept-forward large-air-volume fan blade with the noise reduction function according to claim 4, is characterized in that: the bottom end face of the wind wheel hub (20) is covered with the flow guide cover (30), a plurality of fixing studs (31) are formed on the inner end face of the flow guide cover (30), middle connecting threaded through holes (311) are formed on the fixing studs (31), one ends of the middle connecting threaded through holes (311) extend out of the outer end face of the flow guide cover (30), and the other ends of the middle connecting threaded through holes (311) are aligned and communicated with corresponding threaded holes.
6. The swept-forward large-air-volume fan blade with the noise reduction function according to claim 5, is characterized in that: and a middle spherical bulge (32) which bulges outwards is formed in the middle of the outer end surface of the flow guide cover (30).
7. The swept-forward large-air-volume fan blade with the noise reduction function according to claim 5, is characterized in that: a plurality of limiting pieces (33) are formed at the edge of the inner wall surface of the flow guide cover (30), the limiting pieces (33) are clamped on the inner side wall of the wind turbine hub (20), a plurality of limiting protruding parts (24) are formed on the inner side wall of the wind turbine hub (20), and one side edge of each limiting piece (33) is tightly attached to the corresponding side wall of each limiting protruding part (24).
8. The swept-forward large-air-volume fan blade with the noise reduction function according to claim 1, is characterized in that: two guide wing strips (1) are formed on the bottom surface of the outer edge (111) of the blade (11), and the guide wing strips (1) extend from one side of the air outlet edge (113) of the blade (11) to the air inlet edge (114) of the blade (11) along with the outer edge (111).
9. The swept-forward large-air-volume fan blade with the noise reduction function according to claim 7, is characterized in that: an outer weight-reducing groove (25) is formed in the outer side wall of the wind impeller hub (20) at the position of the limiting convex part (24).
10. The swept-forward large-air-volume fan blade with the noise reduction function according to claim 8, is characterized in that: a plurality of noise reduction tooth sockets (3) are formed on the wall surface of the edge part of one side, close to the outer edge (111), of the air outlet edge (113) of the blade (11), and the noise reduction tooth sockets (3) face to the two guide wing strips (1);
the tooth space angle (4) between the two inner side walls of the noise reduction tooth space (3) is 50-70 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023028052.XU CN213808198U (en) | 2020-12-16 | 2020-12-16 | Sweepforward type large-air-volume fan blade with noise reduction function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023028052.XU CN213808198U (en) | 2020-12-16 | 2020-12-16 | Sweepforward type large-air-volume fan blade with noise reduction function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213808198U true CN213808198U (en) | 2021-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023028052.XU Active CN213808198U (en) | 2020-12-16 | 2020-12-16 | Sweepforward type large-air-volume fan blade with noise reduction function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213808198U (en) |
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- 2020-12-16 CN CN202023028052.XU patent/CN213808198U/en active Active
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