CN210068521U - Axial fan structure of high-efficient low noise - Google Patents
Axial fan structure of high-efficient low noise Download PDFInfo
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- CN210068521U CN210068521U CN201920652335.XU CN201920652335U CN210068521U CN 210068521 U CN210068521 U CN 210068521U CN 201920652335 U CN201920652335 U CN 201920652335U CN 210068521 U CN210068521 U CN 210068521U
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- low noise
- rotary guide
- axial flow
- guide vane
- flow fan
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Abstract
The utility model discloses an axial fan structure of high-efficient low noise, include wheel hub (1) and install a plurality of flabellum (2) at wheel hub (1) lateral surface, its characterized in that: a rotary guide vane (3) extends from the fan blade (2), and the fan blade (2) is connected with the rotary guide vane (3) through a connecting piece (4); the static pressure power-applying capacity, the maximum air quantity and the static pressure efficiency of the axial flow fan are improved. Eliminating the speed circulation quantity flowing out from the outlet of the impeller, and converting the kinetic energy of the peripheral speed of the gas into static pressure energy; the noise is reduced.
Description
The technical field is as follows:
the utility model relates to an axial fan structure of high-efficient low noise.
Background art:
axial fans are generally assembled from a plurality of blades and a hub (motor); the hub is cylindrical, and a plurality of fan blades are arranged on the outer surface of the hub, and the universal axial flow fan with the structure has the following defects: low air quantity and high noise.
The invention content is as follows:
the utility model aims at providing an axial fan structure of high-efficient low noise solves among the prior art axial fan and has the technical problem that the amount of wind is low, the noise is big.
The purpose of the utility model is realized by the following technical scheme:
the utility model provides an axial fan structure of high-efficient low noise, includes wheel hub and installs a plurality of flabellums at the wheel hub lateral surface, its characterized in that: a rotary guide vane extends from the fan blade, and the fan blade is connected with the rotary guide vane through a connecting piece.
The rotary guide vane is sheet-shaped and comprises an upper surface and a lower surface, an air inlet part is formed at the front end of the rotary guide vane, and an air outlet part is formed at the tail end of the rotary guide vane.
The upper surface and the lower surface are convex or concave or plane.
The gaussian curvature of the convex surface is positive, the gaussian curvature of the concave surface is negative, and the gaussian curvature of the plane is zero.
The air outlet part of the rotary guide vane is provided with a sawtooth structure.
The rotary guide vane is arranged near the front edge or the rear edge of the fan blade.
The Z axis is defined to be coincident with the rotating shaft of the axial flow fan, a plane passing through the Z axis is defined to be an A projection plane, the maximum component of the projection of the fan blade on the A projection plane on the Z axis is L, the minimum distance between the projection of the fan blade on the A projection plane and the projection of the rotating guide vane on the A projection plane is X, and X satisfies the condition that X is more than or equal to 0 and less than or equal to |2L |.
The rotary guide vane is in the shape of an airfoil.
The number of the fan blades and the number of the rotary guide vanes are even numbers, and the outer surface of the hub is cylindrical.
The number of the fan blades and the number of the rotary guide vanes are prime numbers, and the outer surface of the hub is cylindrical.
Compared with the prior art, the utility model, following effect has:
1) the utility model discloses an axial fan structure of high-efficient low noise, include wheel hub and install a plurality of flabellums at the wheel hub lateral surface, its characterized in that: stretch out from the flabellum and have rotatory stator, the flabellum passes through the connecting piece to be connected with rotatory stator, has following advantage:
A. the static pressure acting capacity, the maximum air quantity and the static pressure efficiency of the axial flow fan are improved. Eliminating the speed circulation quantity flowing out from the outlet of the impeller, and converting the kinetic energy of the peripheral speed of the gas into static pressure energy;
B. the noise is reduced.
2) Other advantages of the present invention will be described in detail in the examples section.
Description of the drawings:
fig. 1 is a perspective view of an axial flow fan structure of the present invention;
FIG. 2 is a top view of the high-efficiency low-noise axial flow fan of the present invention without the outer cover;
FIG. 3 is a schematic structural view of the present invention with 2 fan blades left and 1 fan blade left;
fig. 4 is a schematic structural view of a rotary guide vane of the present invention;
fig. 5 is an exploded perspective view of the wind wheel of the present invention;
fig. 6 is a schematic structural view of another rotary guide vane of the present invention.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the following detailed description of preferred embodiments and accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1 to 4, the utility model provides an axial fan structure of high-efficient low noise, including wheel hub 1, install a plurality of flabellum 2 and screen panel 10 at 1 lateral surface of wheel hub, its characterized in that: a rotary guide vane 3 extends from the fan blade 2, and the fan blade 2 is connected with the rotary guide vane 3 through a connecting piece 4. The static pressure power-applying capacity, the maximum air quantity and the static pressure efficiency of the axial flow fan are improved. The kinetic energy of the peripheral speed of the gas is converted into static pressure energy, and the noise is reduced.
The rotary guide vane 3 is sheet-shaped and comprises an upper surface 31 and a lower surface 32, an air inlet part 33 is formed at the front end of the rotary guide vane 3, and an air outlet part 34 is formed at the tail end of the rotary guide vane 3.
The upper surface 31 and the lower surface 32 are convex, concave or flat, the gaussian curvature of the convex surface is positive, the gaussian curvature of the concave surface is negative, and the gaussian curvature of the flat surface is zero.
The rotary guide vane 3 is installed near the leading edge 21 or the trailing edge 22 of the fan blade 2.
The hub 1 and the motor are integrated, and the structure is simpler and more compact.
As shown in fig. 5, the Z axis is defined to coincide with the rotation axis of the axial flow fan, a plane passing through the Z axis is defined as an a projection plane, the maximum component of the projection of the fan blade 2 on the a projection plane on the Z axis is L, the minimum distance between the projection of the fan blade 2 on the a projection plane and the projection of the rotary guide vane 3 on the a projection plane is X, and X satisfies 0 ≦ X ≦ 2L |. Therefore, the technical effects of improving the static pressure acting capacity, the maximum air quantity and the static pressure efficiency of the axial flow fan are ensured.
The rotary guide vane 3 is in the shape of an airfoil.
Above-mentioned flabellum 2 and the mutual even number of revolving vane 3, wheel hub's surface is cylindrical or flabellum 2 and the mutual prime number of revolving vane 3, wheel hub's surface is cylindrical.
As shown in fig. 6, the air outlet portion 34 of the above-mentioned rotary guide vane 3 is provided with a saw-toothed structure 35, and the saw-toothed shape 35 is provided at the outlet of the rotary guide vane, so that the laminar boundary layer of the air flow on the blade is converted into turbulent flow earlier, thereby avoiding vortex separation caused by unstable waves in the laminar boundary layer.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.
Claims (10)
1. The utility model provides an axial fan structure of high-efficient low noise, includes wheel hub (1) and installs a plurality of flabellum (2) at wheel hub (1) lateral surface, its characterized in that: a rotary guide vane (3) extends out of the fan blade (2), and the fan blade (2) is connected with the rotary guide vane (3) through a connecting piece (4).
2. The axial flow fan structure with high efficiency and low noise according to claim 1, wherein: rotatory stator (3) be the slice, including upper surface (31) and lower surface (32), form air inlet portion (33) at the front end of rotatory stator (3), form air outlet portion (34) at the tail end of rotatory stator (3) and constitute.
3. The axial flow fan structure with high efficiency and low noise according to claim 2, wherein: the upper surface (31) and the lower surface (32) are convex or concave or plane.
4. A high efficiency low noise axial flow fan structure as claimed in claim 3, wherein: the Gaussian curvature of the convex surface is positive, the Gaussian curvature of the concave surface is negative, and the Gaussian curvature of the plane is zero.
5. A high efficiency low noise axial flow fan structure according to claim 1, 2, 3 or 4, wherein: the air outlet part (34) of the rotary guide vane (3) is provided with a sawtooth structure.
6. The structure of claim 5, wherein: the rotary guide vane (3) is arranged near the front edge or the rear edge of the fan blade (2).
7. A high efficiency low noise axial flow fan structure according to claim 1, 2, 3 or 4, wherein: the Z axis is defined to be coincident with the rotating shaft of the axial flow fan, a plane passing through the Z axis is defined to be an A projection plane, the maximum component of the projection of the fan blade (2) on the A projection plane on the Z axis is L, the minimum distance between the projection of the fan blade (2) on the A projection plane and the projection of the rotary guide vane (3) on the A projection plane is X, and X satisfies the condition that X is more than or equal to 0 and less than or equal to |2L |.
8. The axial flow fan structure with high efficiency and low noise according to claim 6, wherein: the shape of the rotary guide vane (3) is a wing type.
9. The axial flow fan structure with high efficiency and low noise according to claim 6, wherein: the number of the fan blades (2) and the number of the rotary guide vanes (3) are even, and the outer surface of the hub is cylindrical.
10. The axial flow fan structure with high efficiency and low noise according to claim 6, wherein: the number of the fan blades (2) and the number of the rotary guide vanes (3) are prime numbers, and the outer surface of the hub is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920652335.XU CN210068521U (en) | 2019-05-08 | 2019-05-08 | Axial fan structure of high-efficient low noise |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920652335.XU CN210068521U (en) | 2019-05-08 | 2019-05-08 | Axial fan structure of high-efficient low noise |
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| CN210068521U true CN210068521U (en) | 2020-02-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958641A (en) * | 2019-05-08 | 2019-07-02 | 中山宜必思科技有限公司 | A kind of axial flow blower structure of high-efficient low-noise |
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2019
- 2019-05-08 CN CN201920652335.XU patent/CN210068521U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958641A (en) * | 2019-05-08 | 2019-07-02 | 中山宜必思科技有限公司 | A kind of axial flow blower structure of high-efficient low-noise |
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