CN109958641B - A high-efficiency and low-noise axial flow fan structure - Google Patents
A high-efficiency and low-noise axial flow fan structure Download PDFInfo
- Publication number
- CN109958641B CN109958641B CN201910381749.8A CN201910381749A CN109958641B CN 109958641 B CN109958641 B CN 109958641B CN 201910381749 A CN201910381749 A CN 201910381749A CN 109958641 B CN109958641 B CN 109958641B
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- Prior art keywords
- axial flow
- flow fan
- efficiency
- rotating guide
- low
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- 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
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
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- 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
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a high-efficiency low-noise axial flow fan structure, which comprises a hub (1) and a plurality of fan blades (2) arranged on the outer side surface of the hub (1), and is characterized in that rotary guide vanes (3) extend out of the fan blades (2), the fan blades (2) are connected with the rotary guide vanes (3) through connecting pieces (4), and the static pressure functional force, the maximum air quantity and the static pressure efficiency of the axial flow fan are improved. Eliminating the velocity annular quantity flowing out from the impeller outlet, converting the kinetic energy of the circumferential velocity of the gas into static pressure energy, and reducing noise.
Description
Technical field:
The invention relates to an efficient low-noise axial flow fan structure.
The background technology is as follows:
Axial fans are usually assembled by a plurality of fan blades and a hub (motor); the hub is cylindrical, and the outer surface of the hub is provided with a plurality of fan blades, so that the universal axial flow fan with the structure has the following defects of low air quantity and high noise.
The invention comprises the following steps:
The invention aims to provide a high-efficiency low-noise axial flow fan structure, which solves the technical problems of low air quantity and high noise of the axial flow fan in the prior art.
The invention aims at realizing the following technical scheme:
the efficient low-noise axial flow fan structure comprises a hub and a plurality of fan blades arranged on the outer side face of the hub, and is characterized in that rotary guide vanes extend out of the fan blades, and the fan blades are connected with the rotary guide vanes through connecting pieces.
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 convex surface has a positive gaussian curvature, the concave surface has a negative gaussian curvature, and the plane has a zero gaussian curvature.
The air outlet part of the rotary guide vane is provided with a zigzag structure.
The rotary vane is mounted near the front edge or the rear edge of the fan blade.
The definition Z axis coincides 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 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 rotary guide vane on the A projection plane is X, and X is more than or equal to 0 and less than or equal to 2L.
The shape of the rotary guide vane is a wing shape.
The number of the fan blades and the number of the rotary guide vanes are even, 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 invention has the following effects:
1) The invention relates to a high-efficiency low-noise axial flow fan structure, which comprises a hub and a plurality of fan blades arranged on the outer side surface of the hub, and is characterized in that rotary guide vanes extend from the fan blades, and the fan blades are connected with the rotary guide vanes through connecting pieces, and the high-efficiency low-noise axial flow fan structure has the following advantages:
A. And the static pressure functional capacity, the maximum air quantity and the static pressure efficiency of the axial flow fan are improved. Eliminating the velocity annular quantity flowing out from the impeller outlet, and converting the kinetic energy of the circumferential velocity of the gas into static pressure energy;
B. Noise is reduced.
2) Other advantages of the present invention are 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 with the housing omitted;
FIG. 3 is a schematic view of the structure of the present invention with 2 blades omitted and 1 blade left;
FIG. 4 is a schematic view of a rotary vane of the present invention;
FIG. 5 is an exploded perspective view of the wind rotor of the present invention;
FIG. 6 is a schematic view of another rotary vane of the present invention.
The specific embodiment is as follows:
the invention is described in further detail below by means of specific embodiments in connection with the accompanying drawings.
Embodiment one:
As shown in fig. 1 to 4, the invention provides a high-efficiency low-noise axial flow fan structure, which comprises a hub 1, a plurality of fan blades 2 and a net cover 10, wherein the fan blades 2 and the net cover 10 are arranged on the outer side surface of the hub 1, and the high-efficiency low-noise axial flow fan structure is characterized in that rotary guide vanes 3 extend from the fan blades 2, and the fan blades 2 are connected with the rotary guide vanes 3 through connecting pieces 4. The static pressure of the axial flow fan is improved to be functional, maximum air quantity and static pressure efficiency. The velocity annular quantity flowing out of the impeller outlet is eliminated, the kinetic energy of the circumferential velocity of the gas is converted into static pressure energy, and the noise is reduced.
The rotary vane 3 is sheet-shaped and comprises an upper surface 31 and a lower surface 32, an air inlet portion 33 is formed at the front end of the rotary vane 3, and an air outlet portion 34 is formed at the tail end of the rotary vane 3.
The upper surface 31 and the lower surface 32 are convex surfaces, concave surfaces or flat surfaces, the gaussian curvature of the convex surfaces is positive, the gaussian curvature of the concave surfaces is negative, and the gaussian curvature of the flat surfaces is zero.
The rotary vane 3 described above is mounted near the leading edge 21 or 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 defined as 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 defined as X, and X is more than or equal to 0 and less than or equal to |2L|. Thus, the technical effects of improving the static pressure functional capability, the maximum air quantity and the static pressure efficiency of the axial flow fan are ensured.
The shape of the rotary vane 3 is a wing shape.
The number of the fan blades 2 and the number of the rotary guide vanes 3 are even, the outer surface of the hub is cylindrical or the number of the fan blades 2 and the number of the rotary guide vanes 3 are prime, and the outer surface of the hub is cylindrical.
As shown in fig. 6, the air outlet portion 34 of the rotary vane 3 is provided with a zigzag structure 35, and the zigzag structure 35 is disposed at the outlet of the rotary vane, so that the laminar boundary layer of the airflow on the blade can be earlier converted into turbulent flow, and the vortex separation caused by unstable waves in the laminar boundary layer is avoided.
The connecting piece 4 may be a straight rod connecting the fan blade 2 and the rotary vane 3.
The above examples 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 principles of the present invention are included in the scope of the present invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910381749.8A CN109958641B (en) | 2019-05-08 | 2019-05-08 | A high-efficiency and low-noise axial flow fan structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910381749.8A CN109958641B (en) | 2019-05-08 | 2019-05-08 | A high-efficiency and low-noise axial flow fan structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109958641A CN109958641A (en) | 2019-07-02 |
| CN109958641B true CN109958641B (en) | 2025-02-28 |
Family
ID=67027115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910381749.8A Active CN109958641B (en) | 2019-05-08 | 2019-05-08 | A high-efficiency and low-noise axial flow fan structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109958641B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022356A (en) * | 2019-12-31 | 2020-04-17 | 佛山市云米电器科技有限公司 | Two-blade fixed cluster fan blade structure, axial flow fan and air conditioner |
| CN111075739A (en) * | 2019-12-31 | 2020-04-28 | 佛山市云米电器科技有限公司 | Single-blade fixed cluster fan blade, axial flow fan and air conditioner |
| CN111075758A (en) * | 2019-12-31 | 2020-04-28 | 佛山市云米电器科技有限公司 | Clustering fan blade |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008040698A1 (en) * | 2008-07-24 | 2010-01-28 | Robert Bosch Gmbh | Fan i.e. axial flow fan, for use as ventilator for cooling electronic device i.e. personal computer, has fan blades whose front edges point in rotational direction of fan wheel, and slat separated from front edge of fan blade by air gap |
| CN210068521U (en) * | 2019-05-08 | 2020-02-14 | 中山宜必思科技有限公司 | Axial fan structure of high-efficient low noise |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100648088B1 (en) * | 1999-12-21 | 2006-11-23 | 한라공조주식회사 | Axial flow fan |
| CN106015048A (en) * | 2016-07-08 | 2016-10-12 | 江苏富丽华通用设备有限公司 | Low noise air-conditioning cooling axial flow fan |
| CN106593952B (en) * | 2017-01-12 | 2022-08-26 | 珠海格力电器股份有限公司 | Axial flow fan blade and fan and air conditioner outdoor unit with same |
| CN106704229A (en) * | 2017-03-08 | 2017-05-24 | 西北工业大学 | Self-adjusting sawtooth tail edge structure for axial flow fan |
| CN107355424B (en) * | 2017-06-09 | 2023-07-25 | 奥克斯空调股份有限公司 | Axial flow fan blade and fan and air conditioner outdoor unit with same |
| CN108223445B (en) * | 2018-02-12 | 2023-12-29 | 宁波朗迪智能机电有限公司 | Impeller of axial flow fan |
-
2019
- 2019-05-08 CN CN201910381749.8A patent/CN109958641B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008040698A1 (en) * | 2008-07-24 | 2010-01-28 | Robert Bosch Gmbh | Fan i.e. axial flow fan, for use as ventilator for cooling electronic device i.e. personal computer, has fan blades whose front edges point in rotational direction of fan wheel, and slat separated from front edge of fan blade by air gap |
| CN210068521U (en) * | 2019-05-08 | 2020-02-14 | 中山宜必思科技有限公司 | Axial fan structure of high-efficient low noise |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109958641A (en) | 2019-07-02 |
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