CN107826235A - Culvert type thrust turbofan - Google Patents
Culvert type thrust turbofan Download PDFInfo
- Publication number
- CN107826235A CN107826235A CN201711248694.0A CN201711248694A CN107826235A CN 107826235 A CN107826235 A CN 107826235A CN 201711248694 A CN201711248694 A CN 201711248694A CN 107826235 A CN107826235 A CN 107826235A
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- China
- Prior art keywords
- turbofan
- blade
- wheel hub
- type thrust
- culvert type
- 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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- 230000004323 axial length Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000010146 3D printing Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
- B64C11/02—Hub construction
-
- 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
- B64C11/18—Aerodynamic features
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention discloses a kind of culvert type thrust turbofan, is related to vehicle technology field, to solve the technical problem that existing thrust propeller machine is less efficient, operating noise is larger.Culvert type thrust turbofan of the present invention, includes successively from the inside to the outside：Blade wheel hub, turbofan blade and duct shell, and turbofan blade include it is multiple；The inner side of each turbofan blade and lateral wall seamless connection of blade wheel hub, the madial wall of outside and duct shell are seamlessly connected, and one end of each axial direction of the turbofan blade along blade wheel hub is spirally extended to the other end.
Description
Technical field
The present invention relates to vehicle technology field, more particularly to a kind of culvert type thrust turbofan.
Background technology
Thrust propeller is one kind of aircraft engine.Propeller refers to rotate in air or water by blade, will start
Machine rotative power is converted into the device of propeller power, can have 2 or 3 blades to be connected with propeller hub.Propeller is divided into many kinds, application
Also it is quite varied, such as it is used as aircraft, the propeller of steamer.
At present, thrust propeller of the prior art mainly includes：Rotating shaft, the rotating shaft connect propeller hub, on the propeller hub
Equipped with blade, and the rotating shaft is connected with power set, so as to which the power set can drive the axis of rotation, and then band
The propeller hub and blade is moved to rotate in a circumferential direction around the rotating shaft.
Present inventor, it is realized that existing thrust propeller due to blade negligible amounts, it is necessary to maintain propeller
Higher rotating speed could produce required thrust, so the end of blade easily produces vortex and shock wave, therefore the vibrations of blade
Greatly, operating noise is larger, mechanical efficiency is relatively low.
The content of the invention
It is an object of the invention to provide a kind of culvert type thrust turbofan, to solve existing thrust propeller machine efficiency
Technical problem relatively low, operating noise is larger.
The present invention provides a kind of culvert type thrust turbofan, includes successively from the inside to the outside：Blade wheel hub, turbofan blade and duct
Shell, and the turbofan blade include it is multiple；Each inner side of the turbofan blade and the lateral wall of the blade wheel hub without
Seam connection, the madial wall of outside and the duct shell are seamlessly connected, and each turbofan blade is along the blade wheel hub
One end of axial direction is spirally extended to the other end.
In culvert type thrust turbofan provided by the invention, the center of the blade wheel hub offers vertically wears axis hole, and
The axis hole of wearing is used to connect drive device.
In culvert type thrust turbofan provided by the invention, one end of each turbofan blade is seamless to be fixed on the blade
On wheel hub, and the axle center of blade wheel hub described in initial surface normal face, and spirally extended downwards with 40 ° -45 ° of the angle of attack, shape
Into the other end in turbofan face seamless be fixed on the duct shell.
In culvert type thrust turbofan provided by the invention, the angle of attack is 45 °.
In culvert type thrust turbofan provided by the invention, the turbofan blade includes 10-20 pieces.
In culvert type thrust turbofan provided by the invention, the turbofan blade includes 10.
In culvert type thrust turbofan provided by the invention, the mouth of the axial length of the blade wheel hub and the duct shell
The ratio between footpath is 1：1-3：1.
In culvert type thrust turbofan provided by the invention, the mouth of the axial length of the blade wheel hub and the duct shell
The ratio between footpath is 1：1.
In culvert type thrust turbofan provided by the invention, outer radome fairing is additionally provided with the outside of the duct shell.
Relative to prior art, culvert type thrust turbofan of the present invention has the advantage that：
In culvert type thrust turbofan provided by the invention, include successively from the inside to the outside：Blade wheel hub, turbofan blade and duct
Shell, and turbofan blade include it is multiple；The inner side of each turbofan blade is seamlessly connected with the lateral wall of blade wheel hub, outside with
The madial wall of duct shell is seamlessly connected, and one end of each axial direction of the turbofan blade along blade wheel hub is spirally extended to separately
One end.Thus analysis is understood, in culvert type thrust turbofan provided by the invention, inner side and blade wheel due to each turbofan blade
The lateral wall of hub is seamlessly connected, the madial wall of outside and duct shell is seamlessly connected, and each turbofan blade is along blade wheel hub
One end of axial direction is spirally extended to the other end, therefore can form a completely enclosed spiral shape cavity, so as to air
Wherein at a high speed rotate when in the absence of extra resistance, air working medium will not also occur under powerful centrifugal action it is excessive,
The end of turbofan blade also has no way of producing vortex or shock wave, and then can effectively improve mechanical efficiency, reduce operating noise.
In addition, in culvert type thrust turbofan provided by the invention, due to inner side and the blade wheel hub of each turbofan blade
The madial wall of lateral wall seamless connection, outside and duct shell is seamlessly connected, and each axial direction of the turbofan blade along blade wheel hub
The one end in direction is spirally extended to the other end, thus culvert type thrust turbofan it is overall structural strength it is very big, so as to by leaf
Piece wheel hub, turbofan blade and the lightweight as much as possible of duct shell, for example with high strength composite or use 3D printing skill
Art one-shot forming.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art.It should be evident that below in description
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, the design accompanying drawing of other forms can also be obtained according to these accompanying drawings.
Fig. 1 is the internal structure schematic diagram of culvert type thrust turbofan provided in an embodiment of the present invention；
Fig. 2 is the overall structure diagram of culvert type thrust turbofan provided in an embodiment of the present invention.
In figure：1- turbofan blades；2- wears axis hole；3- blade wheel hubs；4- duct shells；5- spiral shape cavitys；6-
Air inlet；7- puff prots.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing.Obviously, described implementation
Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained on the premise of it need not make creative work, belong to the model that the present invention protects
Enclose.
In the description of the invention, it is necessary to explanation, the term " orientation or position of the instruction such as " center ", " interior ", " outer "
Relation is based on orientation shown in the drawings or position relationship, is for only for ease of the description present invention and simplifies description, without referring to
Show or imply that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, therefore can not manage
Solve as limitation of the present invention.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
Can be joined directly together to be to mechanically connect.For the ordinary skill in the art, can regard in concrete condition understanding
State the concrete meaning of term in the present invention.
Fig. 1 is the internal structure schematic diagram of culvert type thrust turbofan provided in an embodiment of the present invention；Fig. 2 is implemented for the present invention
The overall structure diagram for the culvert type thrust turbofan that example provides.
As depicted in figs. 1 and 2, the embodiment of the present invention provides a kind of culvert type thrust turbofan, includes successively from the inside to the outside：Leaf
Piece wheel hub 3, turbofan blade 1 and duct shell 4, and turbofan blade 1 include it is multiple；The inner side of each turbofan blade 1 and blade
The lateral wall of wheel hub 3 is seamlessly connected, the madial wall of outside and duct shell 4 is seamlessly connected, and each turbofan blade 1 is along blade wheel
One end of the axial direction of hub 3 is spirally extended to the other end.
Relative to prior art, the culvert type thrust turbofan described in the embodiment of the present invention has the advantage that：
In culvert type thrust turbofan provided in an embodiment of the present invention, as depicted in figs. 1 and 2, include successively from the inside to the outside：Leaf
Piece wheel hub 3, turbofan blade 1 and duct shell 4, and turbofan blade 1 include it is multiple；The inner side of each turbofan blade 1 and blade
The lateral wall of wheel hub 3 is seamlessly connected, the madial wall of outside and duct shell 4 is seamlessly connected, and each turbofan blade 1 is along blade wheel
One end of the axial direction of hub 3 is spirally extended to the other end.Thus analysis is understood, culvert type thrust provided in an embodiment of the present invention
In turbofan, because the inner side of each turbofan blade 1 and the lateral wall of blade wheel hub 3 are seamlessly connected, in outside and duct shell 4
Side wall is seamlessly connected, and each turbofan blade 1 is spirally extended to the other end along one end of the axial direction of blade wheel hub 3, therefore
A completely enclosed spiral shape cavity 5 can be formed, it is empty in the absence of extra resistance when being rotated at a high speed wherein so as to air
Gas working medium will not also occur excessive under powerful centrifugal action, and the end of turbofan blade 1 also has no way of producing vortex or shock wave,
And then mechanical efficiency can be effectively improved, reduce operating noise.
In addition, in culvert type thrust turbofan provided in an embodiment of the present invention, inner side and blade due to each turbofan blade 1
The lateral wall of wheel hub 3 is seamlessly connected, the madial wall of outside and duct shell 4 is seamlessly connected, and each turbofan blade 1 is along blade wheel
One end of the axial direction of hub 3 is spirally extended to the other end, therefore the structural strength of culvert type thrust turbofan entirety is very big, so as to
Blade wheel hub 3, turbofan blade 1 and the lightweight as much as possible of duct shell 4 for example with high strength composite or can be adopted
With 3D printing technique one-shot forming.
It should be added that, from Newton's second law (F=ma), air sucks turbofan by air inlet 6 herein
After mouthful, spin up by lasting in spiral shape cavity 5, finally sprayed with great speed by puff prot 7, can maximum limit
External impetus is converted into thrust by degree ground.
During practical application, in order to realize the driving to blade wheel hub 3, turbofan blade 1 and duct shell 4, as shown in figure 1,
In culvert type thrust turbofan provided in an embodiment of the present invention, the center of above-mentioned blade wheel hub 3 offers vertically wears axis hole 2, and
This is worn axis hole 2 and can be used in connecting drive device, such as motor etc., so as to pass through the drive device driving blade such as motor wheel hub 3
Rotate, and then drive turbofan blade 1 and duct shell 4 to rotate together.
Wherein, in order to effectively improve mechanical efficiency, as shown in figure 1, culvert type thrust whirlpool provided in an embodiment of the present invention
In fan, one end of each turbofan blade 1 is seamless to be fixed on blade wheel hub 3, and the axle of initial surface normal face blade wheel hub 3
The heart, and spirally extended downwards with 40 ° -45 ° of the angle of attack, the other end in the turbofan face of formation is seamless to be fixed on duct shell 4
On.Counted according to theoretical calculation and test data, turbofan blade 1 is spirally extended downwards with 40 ° -45 ° of the angle of attack can be preferable
Ground ensures that mechanical efficiency is in higher level.
Specifically, as shown in figure 1, in culvert type thrust turbofan provided in an embodiment of the present invention, the above-mentioned angle of attack can be preferred
For 45 °.
Further, in order to reduce turbofan rotating speed as much as possible, operating noise is reduced, as shown in figure 1, the embodiment of the present invention
In the culvert type thrust turbofan of offer, above-mentioned turbofan blade 1 can include 10-20 pieces.According to theoretical calculation and test data
Statistics, the turbofan blade 1 with 10-20 pieces can preferably reduce operating noise.
Further, as shown in figure 1, in culvert type thrust turbofan provided in an embodiment of the present invention, above-mentioned turbofan blade 1
It can be preferably 10.
Meanwhile in culvert type thrust turbofan provided in an embodiment of the present invention, the quantity of above-mentioned turbofan blade 1 not only limits
Between 10-20 pieces, according to the actual requirements, other reasonable values.
Wherein, as depicted in figs. 1 and 2, in culvert type thrust turbofan provided in an embodiment of the present invention, above-mentioned blade wheel hub 3
The ratio between the bore of axial length and duct shell 4 can be preferably 2：1.
Meanwhile in culvert type thrust turbofan provided in an embodiment of the present invention, the axial length and duct of above-mentioned blade wheel hub 3
The ratio between bore of shell 4 is not only limited to 1：1-3：Between 1, according to the actual requirements, other reasonable values.
Specifically, in order to effectively be protected to culvert type thrust turbofan, culvert type provided in an embodiment of the present invention pushes away
In power turbofan, the outside of above-mentioned duct shell 4 is also provided with outer radome fairing.
Culvert type thrust turbofan provided in an embodiment of the present invention mainly has the advantage that relative to prior art：
1st, the inner side due to each turbofan blade 1 and lateral wall seamless connection, outside and the duct shell 4 of blade wheel hub 3
Madial wall be seamlessly connected, and each turbofan blade 1 is spirally extended to the other end along one end of the axial direction of blade wheel hub 3,
Therefore a completely enclosed spiral shape cavity 5 can be formed, in the absence of extra resistance when being rotated at a high speed wherein so as to air
Power, air working medium will not also occur under powerful centrifugal action it is excessive, the end of turbofan blade 1 also have no way of producing vortex or
Shock wave, and then mechanical efficiency can be effectively improved, reduce operating noise；
2nd, the inner side due to each turbofan blade 1 and lateral wall seamless connection, outside and the duct shell 4 of blade wheel hub 3
Madial wall be seamlessly connected, and each turbofan blade 1 is spirally extended to the other end along one end of the axial direction of blade wheel hub 3,
Therefore the overall structural strength of culvert type thrust turbofan is very big, so as to by blade wheel hub 3, turbofan blade 1 and duct shell 4
Lightweight as much as possible, for example with high strength composite or use 3D printing technique one-shot forming；
3rd, from Newton's second law (F=ma), after air sucks turbofan mouth by air inlet 6, in spiral shape cavity 5
Spin up by lasting, finally sprayed with great speed by puff prot 7, to greatest extent can be converted into external impetus
Thrust.
Highly preferred embodiment of the present invention is the foregoing is only, the other designs being not intended to limit the invention；
It is all the present invention design concept and principle within, any modification, equivalent substitution and improvements made etc., should be included in this hair
Within bright protection domain.
Claims (9)
1. a kind of culvert type thrust turbofan, it is characterised in that include successively from the inside to the outside：Blade wheel hub, turbofan blade and duct
Shell, and the turbofan blade include it is multiple；
The inner side of each turbofan blade and lateral wall seamless connection, outside and the duct shell of the blade wheel hub
Madial wall is seamlessly connected, and one end of each axial direction of the turbofan blade along the blade wheel hub be spirally extended to it is another
End.
2. culvert type thrust turbofan according to claim 1, it is characterised in that open vertically at the center of the blade wheel hub
Provided with wearing axis hole, and the axis hole of wearing is used to connect drive device.
3. culvert type thrust turbofan according to claim 1 or 2, it is characterised in that one end of each turbofan blade
It is seamless to be fixed on the blade wheel hub, and the axle center of blade wheel hub described in initial surface normal face, and attacked with 40 ° -45 °
Angle is spirally extended downwards, and the other end in the turbofan face of formation is seamless to be fixed on the duct shell.
4. culvert type thrust turbofan according to claim 3, it is characterised in that the angle of attack is 45 °.
5. culvert type thrust turbofan according to claim 1 or 2, it is characterised in that the turbofan blade includes 10-
20.
6. culvert type thrust turbofan according to claim 5, it is characterised in that the turbofan blade includes 10.
7. culvert type thrust turbofan according to claim 1 or 2, it is characterised in that the axial length of the blade wheel hub
It is 1 with the ratio between the bore of the duct shell：1-3：1.
8. culvert type thrust turbofan according to claim 7, it is characterised in that the axial length of the blade wheel hub and institute
The ratio between bore of duct shell is stated as 1：1.
9. culvert type thrust turbofan according to claim 1, it is characterised in that be additionally provided with the outside of the duct shell outer
Radome fairing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711248694.0A CN107826235A (en) | 2017-11-30 | 2017-11-30 | Culvert type thrust turbofan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711248694.0A CN107826235A (en) | 2017-11-30 | 2017-11-30 | Culvert type thrust turbofan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107826235A true CN107826235A (en) | 2018-03-23 |
Family
ID=61647489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711248694.0A Pending CN107826235A (en) | 2017-11-30 | 2017-11-30 | Culvert type thrust turbofan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107826235A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111086624A (en) * | 2020-01-20 | 2020-05-01 | 张世栋 | Shroud-band type blade tip turbulence blocking device for ducted propeller |
| CN114658491A (en) * | 2022-03-21 | 2022-06-24 | 上海交通大学 | Wheel rim driven Taiji turbofan blade and application |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB948067A (en) * | 1959-10-16 | 1964-01-29 | Bertin & Cie | Improvements in fluid-flow diffusers and apparatus embodying such diffusers |
| US20120251322A1 (en) * | 2011-03-28 | 2012-10-04 | Mcgee Phillip Jackson | Rotating fluid conduit utilized such a propeller or turbine, characterized by a rotating annulus, formed by a rotating inner hub and a rotating outer shell |
| CN102745328A (en) * | 2012-07-13 | 2012-10-24 | 北京理工大学 | Bypass with tip eddy-current confinement effect |
| CN103598692A (en) * | 2013-12-04 | 2014-02-26 | 肖华清 | All-in-one machine for tailoring |
| CN104507798A (en) * | 2012-09-18 | 2015-04-08 | 创新龙有限公司 | Propulsion system for aircraft, in particular lightweight aircraft |
| CN107284652A (en) * | 2017-06-21 | 2017-10-24 | 张家港致盈电子技术有限公司 | Integrated culvert type propeller |
| CN207670650U (en) * | 2017-11-30 | 2018-07-31 | 肖华清 | Culvert type thrust turbofan |
-
2017
- 2017-11-30 CN CN201711248694.0A patent/CN107826235A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB948067A (en) * | 1959-10-16 | 1964-01-29 | Bertin & Cie | Improvements in fluid-flow diffusers and apparatus embodying such diffusers |
| US20120251322A1 (en) * | 2011-03-28 | 2012-10-04 | Mcgee Phillip Jackson | Rotating fluid conduit utilized such a propeller or turbine, characterized by a rotating annulus, formed by a rotating inner hub and a rotating outer shell |
| CN102745328A (en) * | 2012-07-13 | 2012-10-24 | 北京理工大学 | Bypass with tip eddy-current confinement effect |
| CN104507798A (en) * | 2012-09-18 | 2015-04-08 | 创新龙有限公司 | Propulsion system for aircraft, in particular lightweight aircraft |
| CN103598692A (en) * | 2013-12-04 | 2014-02-26 | 肖华清 | All-in-one machine for tailoring |
| CN107284652A (en) * | 2017-06-21 | 2017-10-24 | 张家港致盈电子技术有限公司 | Integrated culvert type propeller |
| CN207670650U (en) * | 2017-11-30 | 2018-07-31 | 肖华清 | Culvert type thrust turbofan |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111086624A (en) * | 2020-01-20 | 2020-05-01 | 张世栋 | Shroud-band type blade tip turbulence blocking device for ducted propeller |
| CN114658491A (en) * | 2022-03-21 | 2022-06-24 | 上海交通大学 | Wheel rim driven Taiji turbofan blade and application |
| CN114658491B (en) * | 2022-03-21 | 2023-08-11 | 上海交通大学 | A rim-driven Taiji turbofan blade and its application |
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