CN112253538B - Axial flow wind wheel structure and axial flow fan - Google Patents
Axial flow wind wheel structure and axial flow fan Download PDFInfo
- Publication number
- CN112253538B CN112253538B CN202011092194.4A CN202011092194A CN112253538B CN 112253538 B CN112253538 B CN 112253538B CN 202011092194 A CN202011092194 A CN 202011092194A CN 112253538 B CN112253538 B CN 112253538B
- Authority
- CN
- China
- Prior art keywords
- winglet
- axial flow
- blade
- vertical
- wind wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- 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
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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
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
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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
- F04D29/386—Skewed blades
-
- 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
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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
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses an axial flow wind wheel structure, which comprises a blade, wherein the blade comprises a blade top, a front edge, a rear edge, a suction surface and a pressure surface; still include perpendicular winglet, perpendicular winglet sets up in She Dingshang, and perpendicular winglet is perpendicular with wind wheel rotation plane, and perpendicular winglet's thickness δ satisfies: delta is more than or equal to 1.5mm and less than or equal to 3.5mm; radial flow of the blade edge air flow is blocked by the vertical winglet of She Dingshang, so that flow loss of the main air flow is reduced, and the effect of improving static pressure efficiency of the fan blade is achieved; meanwhile, the pressure gradient from the blade tip pressure surface to the suction surface can be reduced, the generation and development of blade tip leakage vortex and blade tip separation vortex are restrained, and the aerodynamic noise of the axial flow fan is reduced.
Description
Technical Field
The invention relates to the technical field of axial flow fans, in particular to an axial flow wind wheel structure and an axial flow fan.
Background
In the rotation process of the blades, the air flow can generate radial flow, so that the flow loss of the main air flow is increased, the axial flow fan can generate pneumatic noise, and the noise of the use environment is increased, so that the technical problem needs to be improved.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the axial flow wind wheel structure which can reduce the flow loss of main air flow and reduce the aerodynamic noise of an axial flow fan.
The invention also provides an axial flow fan with the axial flow wind wheel structure.
An axial flow wind wheel structure according to an embodiment of the first aspect of the present invention includes a blade including a tip, a leading edge, a trailing edge, a suction surface, a pressure surface; still include perpendicular winglet, perpendicular winglet set up in on the leaf top, perpendicular winglet is perpendicular with wind wheel rotation plane, perpendicular winglet's thickness δ satisfies: delta is more than or equal to 1.5mm and less than or equal to 3.5mm.
According to the axial flow wind wheel structure provided by the embodiment of the invention, the axial flow wind wheel structure has at least the following beneficial effects:
the vertical winglet of She Dingshang is used for blocking the radial flow of the blade edge airflow, so that the flow loss of the main airflow is reduced, and the effect of improving the static pressure efficiency of the fan blade is achieved; meanwhile, the pressure gradient from the blade tip pressure surface to the suction surface can be reduced, the generation and development of blade tip leakage vortex and blade tip separation vortex are restrained, and the aerodynamic noise of the axial flow fan is reduced.
According to some embodiments of the invention, the vertical winglet is located on the suction side.
According to some embodiments of the invention, the pressure surface and the suction surface are respectively provided with the vertical winglets, and the two vertical winglets are symmetrical to each other.
According to some embodiments of the invention, the vertical winglet extends from the leading edge to the trailing edge, the height H of the vertical winglet increases uniformly, the height H1 of the vertical winglet at the leading edge being H1, H1: h1 =0.
According to some embodiments of the invention, the vertical winglet extends from a starting position between the leading edge and the trailing edge and terminates at the trailing edge.
According to some embodiments of the invention, the vertical winglet has a height H2 at the trailing edge, H2 satisfying: h2 is more than or equal to 0.02D and less than or equal to 0.05D, and D is the diameter of the wind wheel.
According to some embodiments of the invention, the length of the vertical winglet is greater than or equal to one quarter of the tip length.
An axial flow fan according to an embodiment of the second aspect of the present invention includes an axial flow wind wheel structure as described above.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a schematic top view of an embodiment of the present invention;
Fig. 3 is a schematic side view of an embodiment of the present invention.
Blade 100, tip 101, leading edge 102, trailing edge 103, suction side 104, pressure side 105; vertical winglet 200.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
Referring to fig. 1 to 3, an axial flow wind wheel structure includes a blade 100, wherein the blade 100 includes a blade tip 101, a leading edge 102, a trailing edge 103, a suction surface 104, and a pressure surface 105; the vertical winglet 200 is arranged on the blade top 101, the vertical winglet 200 is vertical to the rotation plane of the wind wheel, and the thickness delta of the vertical winglet 200 meets the following conditions: delta is more than or equal to 1.5mm and less than or equal to 3.5mm.
The vertical winglet 200 on the blade top 101 is used for blocking the radial flow of the blade Bian Qiliu, so that the flow loss of the main air flow is reduced, and the effect of improving the static pressure efficiency of the fan blade is achieved; meanwhile, the pressure gradient from the blade tip pressure surface 105 to the suction surface 104 can be reduced, the generation and development of blade tip leakage vortex and blade tip separation vortex are restrained, and the aerodynamic noise of the axial flow fan is reduced.
The position of the vertical winglet 200 on the blade 100 may be achieved in two ways:
Mode one: the vertical winglet 200 is located on one side of the suction surface 104.
Mode two: the pressure surface 105 and the suction surface 104 are respectively provided with a vertical winglet 200, and the two vertical winglets 200 are symmetrical to each other.
The vertical winglet 200 extends gradually over the tip 101 while the height H of the vertical winglet 200 increases evenly, wherein:
Mode one: the vertical winglet 200 extends from the leading edge 102 to the trailing edge 103, the vertical winglet 200 having a height H1 at the leading edge 102, H1 satisfying: h1 =0, the vertical winglet 200 has a height H2 at the trailing edge 103, H2 satisfying: h2 is more than or equal to 0.02D and less than or equal to 0.05D, and D is the diameter of the wind wheel.
Mode two: the starting point of the vertical winglet 200 extension is located between the leading edge 102 and the trailing edge 103, the end point of the extension is the trailing edge 103, the vertical winglet 200 has a height H2 at the trailing edge 103, H2 satisfying: h2 is more than or equal to 0.02D and less than or equal to 0.05D, and D is the diameter of the wind wheel.
The length of the vertical winglet 200 is greater than or equal to one quarter of the length of the tip 101.
An axial flow fan comprises the axial flow wind wheel structure.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (4)
1. An axial flow wind wheel structure comprises a blade (100), wherein the blade (100) comprises a blade top (101), a front edge (102), a rear edge (103), a suction surface (104) and a pressure surface (105); the wind turbine is characterized by further comprising a vertical winglet (200), wherein the vertical winglet (200) is arranged on the blade top (101), the vertical winglet (200) is perpendicular to the rotation plane of the wind wheel, and the thickness delta of the vertical winglet (200) meets the following conditions: delta is more than or equal to 1.5mm and less than or equal to 3.5mm;
The vertical winglet (200) extends from the leading edge (102) to the trailing edge (103), the height H of the vertical winglet (200) increases uniformly, the height H of the vertical winglet (200) at the leading edge (102) being H1, H1 satisfying: h1 =0;
The vertical winglet (200) has a height H2 at the trailing edge (103), H2 satisfying: h2 is more than or equal to 0.02D and less than or equal to 0.05D, wherein D is the diameter of the wind wheel;
The length of the vertical winglet (200) is greater than or equal to one quarter of the length of the tip (101).
2. An axial flow wind rotor structure according to claim 1, characterised in that the vertical winglet (200) is located on one side of the suction surface (104).
3. An axial flow wind wheel structure according to claim 1, wherein the pressure surface (105) and the suction surface (104) are respectively provided with the vertical winglets (200), and the two vertical winglets (200) are symmetrical to each other.
4. An axial flow fan comprising an axial flow wind wheel structure according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011092194.4A CN112253538B (en) | 2020-10-13 | 2020-10-13 | Axial flow wind wheel structure and axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011092194.4A CN112253538B (en) | 2020-10-13 | 2020-10-13 | Axial flow wind wheel structure and axial flow fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112253538A CN112253538A (en) | 2021-01-22 |
| CN112253538B true CN112253538B (en) | 2024-06-18 |
Family
ID=74242038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011092194.4A Active CN112253538B (en) | 2020-10-13 | 2020-10-13 | Axial flow wind wheel structure and axial flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112253538B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214499550U (en) * | 2021-03-31 | 2021-10-26 | 广东美的制冷设备有限公司 | Axial flow wind wheel, axial flow fan and air conditioner |
| CN113757171B (en) * | 2021-10-13 | 2023-08-25 | 珠海格力电器股份有限公司 | Blade assembly, axial flow fan and design method of small blade tip wing |
| CN114909325A (en) * | 2022-05-30 | 2022-08-16 | 华中科技大学 | Low-noise axial flow fan blade and axial flow fan |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213953991U (en) * | 2020-10-13 | 2021-08-13 | 广东顺威精密塑料股份有限公司 | Axial flow wind wheel structure and axial flow fan |
| CN113757171A (en) * | 2021-10-13 | 2021-12-07 | 珠海格力电器股份有限公司 | Blade assembly, axial flow fan and design method of blade tip winglet |
| CN114909325A (en) * | 2022-05-30 | 2022-08-16 | 华中科技大学 | Low-noise axial flow fan blade and axial flow fan |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202628612U (en) * | 2012-06-11 | 2012-12-26 | 珠海格力电器股份有限公司 | Axial flow fan blade, fan and air conditioner outdoor machine |
| CN111425451B (en) * | 2020-01-17 | 2021-10-08 | 华中科技大学 | Blade tip winglet for movable blade of diagonal flow fan |
-
2020
- 2020-10-13 CN CN202011092194.4A patent/CN112253538B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213953991U (en) * | 2020-10-13 | 2021-08-13 | 广东顺威精密塑料股份有限公司 | Axial flow wind wheel structure and axial flow fan |
| CN113757171A (en) * | 2021-10-13 | 2021-12-07 | 珠海格力电器股份有限公司 | Blade assembly, axial flow fan and design method of blade tip winglet |
| CN114909325A (en) * | 2022-05-30 | 2022-08-16 | 华中科技大学 | Low-noise axial flow fan blade and axial flow fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112253538A (en) | 2021-01-22 |
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