CN111664052A - Blade tip winglet propeller (fan) - Google Patents
Blade tip winglet propeller (fan) Download PDFInfo
- Publication number
- CN111664052A CN111664052A CN202010629402.3A CN202010629402A CN111664052A CN 111664052 A CN111664052 A CN 111664052A CN 202010629402 A CN202010629402 A CN 202010629402A CN 111664052 A CN111664052 A CN 111664052A
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- Prior art keywords
- fan
- winglet
- blade
- propeller
- blade tip
- 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.)
- Pending
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000005728 strengthening Methods 0.000 claims abstract description 5
- 230000003116 impacting effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/0608—Rotors characterised by their aerodynamic shape
- F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/26—Blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/16—Blades
- B64C11/20—Constructional features
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/12—Blades; Blade-carrying rotors
- F03B3/121—Blades, their form or construction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Ocean & Marine Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a blade tip winglet type propeller (fan), which comprises a blade (fan) impeller hub and blades, wherein a winglet vertical to a blade tip is connected between the long edge vertex and the short edge vertex of the blade tip of each blade (fan), and the winglet is unlimited in shape and generally in an arc triangle shape; the height of the winglet is generally greater than the distance between the long edge vertex of the blade and the plane perpendicular to the propeller (fan) axis from the short edge vertex; the distance from the head of the winglet to the axle center is not equal to the distance from the tail of the winglet to the axle center, the edge connected with the winglet and the blade tip forms an included angle with the top point of the long edge of the propeller (fan) by using the axle center of the propeller (fan) as the center of a circle so as to ensure that the included angle is formed along the outer inclined plane of the propeller (fan) and guide partial air (water) flow splashed towards the periphery outside the axle center of the propeller (fan) to move forwards or backwards in order to do work under the strengthening action of centrifugal force, so that the wasted acting force is changed into effective acting force. Meanwhile, the phenomenon of blade tip vortex ring (rotation) is eliminated.
Description
Technical Field
The invention relates to mechanical operation equipment, in particular to mechanical power operation equipment of a propeller (fan).
Background
Existing propellers (fans) typically operate in a rotor blade twist angle mode to provide the force. However, this twisted angle paddle (fan) blade design also has certain drawbacks: firstly, the pressure of the windward side of the rotor blade (fan) is far larger than that of the back side of the rotor blade (fan), when the rotor blade (fan) rotates at a high speed, a reverse flow area that air (water) flows from the rear edge of the rotor blade (fan) to the front edge of the rotor blade (fan) can appear on the back side of the rotor blade (fan), particularly a blade tip with the highest movement speed often forms a vortex ring (rotation), and as a result, five percent of the outermost part of the rotor blade (fan) does not provide power or even provides reaction force. Secondly, after the air (water) flow on the windward (water) surface of the rotor blade (fan) collides with the blade surface, most of the air (water) flow moves forwards or backwards under the action of the torsional angle inclined plane of the blade (fan) to form effective acting force, but part of the air (water) flow splashes to the periphery outside the axis of the propeller (fan) along the outer inclined plane of the axis of the blade (fan) under the strengthening action of centrifugal force, so that the effective acting force is not formed, and waste is caused.
Disclosure of Invention
In order to overcome the defects that the blade tip vortex ring (rotation) phenomenon of the propeller (fan) rotor blade (fan) and part of air (water) flow are diffused towards the periphery of the outer inclined plane of the axis of the propeller (fan) blade after impacting the blade surface and effective acting force is not formed in the prior art, the invention provides a winglet which is vertical to the blade tip and is added in the blade tip area of the propeller (fan) rotor blade (fan) blade, the part of air (water) flow splashed towards the periphery outside the axis of the propeller (fan) is guided to move forwards or backwards orderly to do work, and the wasted acting force is changed into effective acting force. Meanwhile, the phenomenon of the vortex ring (rotation) of the blade tip is naturally broken due to the blocking of the winglet.
The technical scheme adopted by the invention for solving the technical problems is as follows: a winglet-type propeller (fan) comprises propeller (fan) blades, and a winglet which is perpendicular to the blade tip is connected between the top edge of the blade tip of each propeller (fan) and the top edge of the lower edge of the blade tip, and the shape of the winglet is not limited and is generally triangular.
In the blade tip winglet type propeller (fan), the distance from the connecting point of the head of the blade tip winglet and the top edge vertex of the blade tip to the axis of the propeller (fan) and the distance from the connecting point of the tail of the blade tip winglet and the bottom edge vertex of the blade tip to the axis of the propeller (fan) cannot be equal, namely, the projection of the circular arc track drawn by taking the head of the winglet as a point and the projection of the circular arc track drawn by the tail end point of the winglet cannot be overlapped by taking the axis as the center of a circle, and the projection must be inside and outside. The head to the tail of the winglet is connected with the blade tip, the edge of the winglet forms an included angle with a circular arc track drawn by taking the axle center of the propeller (fan) as the center of a circle at the long edge vertex of the blade (fan), so as to ensure that the blade (fan) outer inclined plane is along, and under the strengthening action of centrifugal force, the part of air (water) flow splashed around the outside of the axle center of the propeller (fan) can flow forwards or backwards in order after impacting the winglet, the strength that the air (water) flow pushes the blade (fan) to the designed direction or the propeller (fan) blade pushes the air (water) to the designed direction to do work is enhanced, and the work doing efficiency of the propeller (fan) is improved. To be the upper or lower edge of the blade tip long? How long the long edge is, how short the short edge is? Depending on the design requirements of the propeller (fan) function and function.
Above-mentioned winglet formula screw (fan), the top of winglet is the most likely vertex of connecting the blade tip short margin, and the tail of winglet is the most likely vertex of connecting the blade tip long margin, but no matter the winglet head and the tail be connected with the vertex on which side, must all satisfy winglet effort direction and oar (fan) blade face direction of action complementary, and the direction that the winglet gos forward after the atress effect is unanimous with the direction that the oar (fan) blade face atress was advanced after. The leading to trailing of the winglet, the portion connecting the tips of the blades, is generally, but not exclusively, a straight line. The length of the bottom edge of the winglet is the height of the winglet, and the height of the winglet is larger than or equal to the distance from the long edge vertex of the blade (fan) to the surface of the short edge vertex of the blade (fan) which is vertical to the shaft of the propeller (fan).
The invention has the beneficial effects that: the invention relates to a blade tip winglet type propeller (fan), which is characterized in that after a blade tip part of a rotor blade (fan) is connected with a winglet vertical to the blade tip, the vortex ring (rotation) phenomenon of the blade tip of the traditional propeller (fan) is effectively eliminated due to the blocking of the blade tip winglet. Meanwhile, the part of air (water) flow flying around the outside of the axis of the propeller (fan) moves forward or backward orderly in a standard manner, so that the work efficiency of the propeller (fan) is greatly improved, and even is improved by more than one time. In addition, one edge of the winglet is connected with the blade tip part area, and the extension line of the winglet tail tip can even connect all the blades into a whole, so that the rigidity and the strength of the propeller (fan) are further improved, and the service life of the propeller (fan) is prolonged. Finally, because the winglet is perpendicular to the blade tip of the propeller (fan), and the edge from the head to the tail of the winglet forms an included angle with the arc drawn by the propeller (fan), the layout of the special structure can ensure that the rotor blade (fan) of the propeller (fan) can be pushed to do work by front wind energy except that the rotor blade (fan) can be pushed to do work by the wind energy on the left side, the right side, the upper side and the lower side when the propeller is used as the fan of the wind driven generator, and can push the winglet and drive the propeller (fan) to rotate to do work after impacting the winglet, which can not be done by the traditional propeller (fan).
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of a winglet-type propeller (fan) according to the invention;
FIG. 2 is a schematic view taken along line E-E of FIG. 1;
FIG. 3 is a schematic view of a winglet.
In the figure, 1, a paddle (fan) impeller hub, 2, a paddle (fan) blade, 3, a winglet and 4, an arc line from the vertex of the short edge of the paddle (fan) blade 2 to the vertex of the long edge of the paddle (fan) blade 2 is an edge of the winglet 3.
In the figure, a is a vertical point from the head of the winglet 3, namely the vertex of the short edge of the paddle (fan) blade 2, B is the tail end of the winglet 3, namely the vertex of the long edge of the paddle (fan) blade 2, c is the tail tip of the winglet 3, d is a plane from the vertex B of the long edge of the paddle (fan) blade 2 to the vertex a of the short edge of the paddle (fan) blade 2, which is vertical to the propeller (fan) shaft, and o is the shaft center.
Detailed Description
[ example 1 ]
A blade tip winglet type propeller (fan) comprises a blade (fan) impeller hub 1, a blade (fan) 2 and a winglet 3, wherein the point of the short edge of the blade (fan) 2 is coincided with the head of the winglet 3 to form a point A, the point of the long edge of the blade (fan) 2 and the tail end of the winglet (3) are coincided to be a point B, the tail tip of the winglet (3) is a point C, one edge of the winglet (3) is connected with an arc line 4 from the short edge vertex A of the blade (fan) 2 to the long edge vertex B of the blade (fan) 2, the winglet (3) is perpendicular to a blade tip, the height (BC length) of the winglet (3) is larger than the distance (BD length) between the vertex B of the long edge of the blade (fan) 2 and the short edge vertex A of the blade (fan) 2, which are perpendicular to the plane of a propeller (fan) shaft, the blade tip winglet type propeller (fan) is respectively provided with 12 blades (fan) 2 and 12 winglets (fan) 3, and the distance from the shaft center O to the head A point of the winglet (3) is smaller than the.
[ example 2 ]
The shape of the winglet 3 is not limited, but is mainly arc-shaped and triangular; the height (length of BC) of the winglet 3 is greater than or equal to the distance (length of BD) between the apex B of the long edge of the paddle (fan) blade 2 and the face of the paddle (fan) blade 2, the apex a of which is perpendicular to the propeller (fan) axis; the edge from the head A to the tail end B of the winglet 3 and the arc drawn by the long edge vertex B of the paddle (fan) blade 2 form a certain included angle. The size of this contained angle to and winglet 3's shape and height to satisfy winglet 3 cooperation oar (fan) leaf 2, reach and block blade tip vortex ring (revolve), realize improving propeller (fan) work efficiency to the best can. The oar (fan) blades 2 can also be set to two, three or other multi-rotor oar (fan) blades, and how many oar (fan) blades 2 set up how many winglets 3.
When the invention works, the short edge of the blade (2) protrudes forward and the long edge is recessed backward due to the designed torsion angle, and after the wind power in the front direction directly hits the blade (2), most of the airflow flows backward to the lower part to push the blade (2) to rotate clockwise to do work. However, a part of the air flow is along the outer inclined plane of the axle center of the paddle (fan) blade 2 and is diffused to the periphery outside the axle center of the propeller (fan) under the strengthening action of centrifugal force, the part of the air flow is blocked after hitting the winglet 3 vertical to the blade tip, because the head A of the winglet 3 faces inwards, the tail end B faces outwards, the forward pressure is increased, and the backward pressure is reduced, the direction of the air flow hitting the winglet 3 is changed, the air flow flows outwards towards the back direction with small pressure, and the thrust of the clockwise rotation of the paddle (fan) blade 2 is increased. Meanwhile, the winglet 3 can be pushed and the blade (fan) 2 can be driven to rotate clockwise to do work after the winglet 3 is impacted by wind energy blown from the left side, the right side, the upper side and the lower side, so that the working efficiency of the propeller (fan) is greatly improved.
Claims (1)
1. The utility model provides a blade tip winglet formula screw propeller (fan), includes oar (fan) impeller hub (1), oar (fan) leaf (2), winglet (3), characterized by: the top point of the short edge of the blade (2) of the paddle (fan) and the head of the winglet (3) are coincided to be a point (A), the top point of the long edge of the blade (2) of the paddle (fan) and the tail end of the winglet (3) are coincided to be a point (B), the tail tip of the winglet (3) is a point (C), one edge of the winglet (3) is connected with an arc line (4) from the top point (A) of the short edge of the blade (2) of the paddle (fan) to the top point (B) of the long edge of the blade (2), the winglet (3) is vertical to the blade tip, the shape of the winglet (3) is not limited but mainly takes the shape of an arc triangle, the length of the height (BC) of the winglet (3) is larger than or equal to the distance (BD) from the top point (B) of the long edge of the blade (2) to the surface of the top point (A) of the short edge of the blade (2) of the paddle (fan) vertical to the shaft of the propeller (fan), the shaft center (O) is not equal to the distance (B) of the tail end (3), namely, the projection of the arc track drawn by taking the axis (O) as the center of a circle and taking the head (A) of the winglet (3) as a point can not coincide with the projection of the arc track drawn by taking the tail end (B) of the winglet (3) as a point, an included angle is formed between the edge from the head (A) of the winglet (3) to the tail end (B) point and the arc track drawn by taking the axis (O) of the propeller (fan) as the center of a circle with the long edge vertex (B) of the propeller (fan) blade (2) to ensure that the part of gas (water) splashed to the periphery of the axis (O) of the propeller (fan) can flow forwards or backwards in order after impacting the winglet (3) under the strengthening effect of centrifugal force, and the strength of the gas (water) flow pushes the propeller (fan) blade (2) to the designed direction or pushes the propeller (fan) blade (2) to flow to the designed direction to do work, the working efficiency of screw (fan) is improved, blade tip aileron formula screw (fan) can set up two leaves, three leaves or other many rotor oar (fan) leaf (2), and how many oar (fan) leaf (2) just set up how many winglet (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010629402.3A CN111664052A (en) | 2020-06-24 | 2020-06-24 | Blade tip winglet propeller (fan) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010629402.3A CN111664052A (en) | 2020-06-24 | 2020-06-24 | Blade tip winglet propeller (fan) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111664052A true CN111664052A (en) | 2020-09-15 |
Family
ID=72390895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010629402.3A Pending CN111664052A (en) | 2020-06-24 | 2020-06-24 | Blade tip winglet propeller (fan) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111664052A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003278696A (en) * | 2002-03-26 | 2003-10-02 | Fuji Electric Co Ltd | Propeller fan |
| JP2004251179A (en) * | 2003-02-19 | 2004-09-09 | Usui Kokusai Sangyo Kaisha Ltd | Axial-flow fan |
| CN1563707A (en) * | 2004-03-18 | 2005-01-12 | 上海交通大学 | Horizontal shaft wind mill with small sharp wing |
| US20090257885A1 (en) * | 2006-12-22 | 2009-10-15 | Kristian Balschmidt Godsk | Wind Turbine With Rotor Blades Equipped With Winglets And Blades For Such Rotor |
| DE202013101386U1 (en) * | 2013-03-28 | 2014-07-09 | Rolf Rohden | Rotor blade with a winglet, wind turbine and wind turbine park |
| JP5969651B1 (en) * | 2015-04-21 | 2016-08-17 | 紳一郎 中島 | Windmill wing |
| EP3130799A1 (en) * | 2014-03-28 | 2017-02-15 | The Chugoku Electric Power Co., Inc. | Wind turbine blade and wind power generator provided with same |
| CN106574603A (en) * | 2014-08-05 | 2017-04-19 | 瑞安·丘奇 | Structure with rigid winglet adapted to traverse a fluid environment |
| JP2017166324A (en) * | 2016-03-14 | 2017-09-21 | 株式会社Ｔｉｎｇａｒａ | T-type leading end blade for turbine |
| US20200003219A1 (en) * | 2017-01-27 | 2020-01-02 | Safran Helicopter Engines | Wheel blade for turbomachine, comprising a winglet at its tip and at the leading edge |
-
2020
- 2020-06-24 CN CN202010629402.3A patent/CN111664052A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003278696A (en) * | 2002-03-26 | 2003-10-02 | Fuji Electric Co Ltd | Propeller fan |
| JP2004251179A (en) * | 2003-02-19 | 2004-09-09 | Usui Kokusai Sangyo Kaisha Ltd | Axial-flow fan |
| CN1563707A (en) * | 2004-03-18 | 2005-01-12 | 上海交通大学 | Horizontal shaft wind mill with small sharp wing |
| US20090257885A1 (en) * | 2006-12-22 | 2009-10-15 | Kristian Balschmidt Godsk | Wind Turbine With Rotor Blades Equipped With Winglets And Blades For Such Rotor |
| DE202013101386U1 (en) * | 2013-03-28 | 2014-07-09 | Rolf Rohden | Rotor blade with a winglet, wind turbine and wind turbine park |
| EP3130799A1 (en) * | 2014-03-28 | 2017-02-15 | The Chugoku Electric Power Co., Inc. | Wind turbine blade and wind power generator provided with same |
| CN106574603A (en) * | 2014-08-05 | 2017-04-19 | 瑞安·丘奇 | Structure with rigid winglet adapted to traverse a fluid environment |
| JP5969651B1 (en) * | 2015-04-21 | 2016-08-17 | 紳一郎 中島 | Windmill wing |
| JP2017166324A (en) * | 2016-03-14 | 2017-09-21 | 株式会社Ｔｉｎｇａｒａ | T-type leading end blade for turbine |
| US20200003219A1 (en) * | 2017-01-27 | 2020-01-02 | Safran Helicopter Engines | Wheel blade for turbomachine, comprising a winglet at its tip and at the leading edge |
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| Title |
|---|
| 付伟等: "翼梢小翼几何参数对机翼气动特性影响研究", 《科学技术与工程》 * |
| 倪旭辉: "波音737NG飞机安装翼梢小翼的优缺点", 《河南科技》 * |
| 张海泉等: "无梢涡螺旋桨试验研究", 《武汉船舶职业技术学院学报》 * |
| 许成杰等: "临近空间桨梢小翼螺旋桨布局气动增效研究", 《航空计算技术》 * |
| 许波峰等: "基于自由涡尾迹和遗传算法的叶尖小翼气动优化设计", 《空气动力学学报》 * |
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