CN207141374U - Improve servicing unit, ducted fan and the aircraft of ducted fan inlet air flow - Google Patents
Improve servicing unit, ducted fan and the aircraft of ducted fan inlet air flow Download PDFInfo
- Publication number
- CN207141374U CN207141374U CN201720259740.6U CN201720259740U CN207141374U CN 207141374 U CN207141374 U CN 207141374U CN 201720259740 U CN201720259740 U CN 201720259740U CN 207141374 U CN207141374 U CN 207141374U
- Authority
- CN
- China
- Prior art keywords
- ducted fan
- duct
- air flow
- servicing unit
- fuselage
- 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.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses the servicing unit and duct for improving ducted fan inlet air flow.Servicing unit includes loudspeaker thin slice and diversion rib plate, and deflector extends along air flow direction, optimizes duct inlet air flow environment.Duct cylinder inwall is stepped, the less duct cylinder part of internal diameter is located at the air inlet of ducted fan, the larger duct part of internal diameter is located at the gas outlet of the ducted fan, thus change the air flow path at duct inwall, reduce the friction between air-flow and blade tip, improve the pneumatic efficiency of duct.
Description
Technical field
The present invention relates to duct and aircraft field, and in particular to improves the servicing unit of ducted fan inlet air flow, contains
Road fan and aircraft.
Background technology
Compared with isolated propeller, shrouded propeller it is main be that pneumatic efficiency is high a little, have a safety feature.Because duct
The presence of cylinder causes propeller to be interacted with duct cylinder, improves the circulation that propeller blade tip goes out, reduces the oar of propeller
Point loss, so as to improve the pneumatic efficiency of propeller, meanwhile, duct is all smaller, and noise is low.Duct cylinder upper end is radially
The circular arc lip to stretch out, propeller suction stream go out generation in duct lip and streamed, and form low-pressure area, produce duct additional
Pulling force, increase duct entirety pulling force.The type of drive of ducted fan has direct drive and indirectly two kinds of driving, and the two difference is not
Greatly, type of drive can be selected according to real work demand.
Main purpose of the present utility model is to provide a kind of servicing unit for improving ducted fan inlet air flow.
The content of the invention
In order to further optimize ducted fan inlet air flow environment, increase pressure at air inlet, and reduce air-flow in duct
Friction between cylinder inwall and blade tip, and then improve the starting efficiency of ducted fan.A kind of improve provided by the utility model is contained
The servicing unit of road fan inlet air-flow includes loudspeaker thin slice and diversion rib plate, and loudspeaker thin slice is arranged on the lip wall of duct cylinder entrance
Inner side, gap is provided between loudspeaker thin slice and duct lip wall, is provided with diversion rib plate in gap, diversion rib plate is along air-flow stream
To extension.
From above scheme, the presence of servicing unit make it that the air-flow of duct porch is more smooth.Deflector, which plays, to be drawn
The effect of flow guide, the air-flow of entrance is allowed to divide into two parts, a part is proximate to duct cylinder inwall, and a part is away from culvert
Road cylinder inwall middle air flow.Because the air velocity close to duct cylinder inwall is fast, pressure is big, makees with the mutual friction of middle air flow phase
Streamed with that can be formed, therefore, loudspeaker thin slice and diversion rib plate separate the air-flow at the close duct cylinder inwall of porch,
So as to improve inlet air flow environment, steady air flow, duct vibrations and flow perturbation are reduced, reduces gas current friction, is improved
Duct efficiency.
Further, the quantity of diversion rib plate is more than or equal to two.Diversion rib plate will be close to the air inlet at duct cylinder inwall
Air-flow is divided into some, further reduces the friction between gas.
Further, truncated tapered of the gap along air current flow direction.The narrowed height referred to along section in section
Degree direction is narrowed, and is either narrowed along the width in section or simultaneously narrowed along the width and short transverse in section.This
Sample is advantageous to front end supercharging, improves pneumatic efficiency.
In order to further optimize the environment of duct charge air flow, on the basis of above, the utility model also proposed one
Kind ducted fan, including rotor, drive device, deflector and duct cylinder.Loudspeaker thin slice is arranged in the lip wall of duct cylinder entrance
Side, gap is provided between loudspeaker thin slice and duct lip wall, diversion rib plate is provided with gap, diversion rib plate prolongs along air flow direction
Stretch.
Further, duct cylinder inwall is stepped, and the less section of internal diameter is positioned close to the air inlet side of duct, internal diameter
Larger section is positioned close to the exhaust side of duct.As can be seen here, duct cylinder inwall divide into two parts, and internal diameter size is not
Together, rotor is arranged on the big section of internal diameter.When air-flow flows to big footpath inwall from path inwall, gas can first touch rotor
At non-wing tip, the gas current friction of wing tip is so reduced, increases the negative pressure of air inlet, improves pneumatic efficiency.
Further, there are reinforcement and fixed plate between drive device and duct cylinder, have through hole in fixed plate.Drive device
There are direct drive and indirect drive manner, because the whole big speed of duct power is fast, can effectively play supporting role, drive
Two positions of device are gone to fix respectively.Through hole in fixed plate is used for cabling.
Further, the one end of deflector away from duct cylinder has breach.When air-flow discharges duct cylinder, in duct cylinder
Air-flow velocity at wall is most fast, therefore the place for needing most water conservancy diversion is just proximate at duct cylinder inwall, and water conservancy diversion elsewhere is made
With relative unobvious, so as to have in the one end of deflector away from duct cylinder, influence of the breach to water conservancy diversion is little, and can mitigate weight
Amount.
Further, aircraft, including fuselage and ducted fan, ducted fan are arranged on fuselage, wherein ducted fan
For any one ducted fan set forth above.
Further, multiple ducted fans are perpendicular or parallel is arranged on fuselage.As can be seen here, multiple ducted fan power
Amount is bigger, more efficient.
Further, what multiple ducted fans can vert is arranged on fuselage, tilting drive, drives multiple duct wind
Fan verts between the parallel first position of relative fuselage and the relative vertical second place of fuselage.As can be seen here, it is multiple to incline
The ducted fan turned, not only with ducted fan set forth above a little, and multiple ducted fans independently vert, common to coordinate
Use so that the control of aircraft is more flexible.
Brief description of the drawings
Fig. 1 is the bypass system structural representation of first embodiment；
Fig. 2 is the enlarged drawing of Fig. 1 servicing unit；
Fig. 3 is deflector structure schematic diagram；
Fig. 4 is the enlarged drawing at A in Fig. 1.
Embodiment
First embodiment：
Bypass system 100 as shown in Figures 1 and 3, including servicing unit 110, the first supporting plate 120, duct cylinder 130, drive
Dynamic motor 140, the second supporting plate 150, rotor 160 and deflector 170.It is intraoral that servicing unit 110 is arranged on entering for duct cylinder 130
On wall, the bottom of the first supporting plate 120 connection motor 140 and the inwall of duct cylinder 130, and motor vibrating can be reduced,
Second supporting plate 150 support motor the other end is simultaneously connected with duct cylinder 130, there is through hole and right therewith in the second supporting plate
On the one hand the through hole 172 on duct cylinder answered, the through hole are used for cabling, on the other hand for installation positioning of the bolt to motor.
Deflector 170 is arranged on the rear of ducted fan 160, and guide functions are played to duct exit flow.
The enlarged drawing of servicing unit 110 as shown in Figure 2, it includes loudspeaker thin slice 111 and diversion rib plate 112, loudspeaker thin slice
111 are arranged on the inside of the lip wall of the entrance of duct cylinder 130 and form gap, and section of the gap along air current flow direction is gradually received
It is narrow.Diversion rib plate 112 is axially uniformly set in gap, and is extended along air flow direction, and the quantity of diversion rib plate is at least
Including two, the cross section of diversion rib plate becomes narrow gradually along its short transverse and/or width.Therefore, the side of deflector one
Face links together by way of be bonded or weld loudspeaker thin slice with duct cylinder, on the other hand by loudspeaker thin slice and duct cylinder
Between gap be divided into multiple small―gap sutures, so reduce the friction and disturbance of inlet air flow.
The rotating speed of rotor 160 is higher, and the air-flow entirety flow velocity in duct cylinder 130 is bigger, and loudspeaker thin slice 111 is arranged on duct
Air-flow velocity on the inside of the lip wall of the entrance of cylinder 130 and in the gap of formation greatly reinforces, advantageously in raising ducted fan
Front end pressurized effect.
Ducted fan, including rotor, drive device, deflector and duct cylinder, loudspeaker thin slice are arranged on duct cylinder entrance
The inner side of lip wall, gap being provided between loudspeaker thin slice duct lip wall, being provided with diversion rib plate in gap, diversion rib plate is along air-flow
Flow direction extension.
The structural representation of deflector 170 as shown in Figure 3, it is made up of six veneers, one end and the guide shell phase of deflector
Connection, the other end are connected with drive device.Deflector 170 has inclination angle, and incline direction is consistent with air flow direction, and on deflector
Jagged 171, gap position is in that one end away from guide shell on deflector.Air-flow is after rotor 160, diverse location stream
Speed is otherwise varied.Maximum along the air-flow velocity of duct cylinder inwall, flow is also maximum, and the main water conservancy diversion position of deflector is close
At guide shell inwall, the guide functions at other positions are with respect to unobvious on deflector.Therefore breach 171 is not influenceing water conservancy diversion effect
While can also loss of weight.
Fig. 4 be Fig. 1 in duct cylinder inwall partial enlarged drawing A, duct cylinder inwall as shown in Figure 4 is stepped, internal diameter compared with
Small section is positioned close to the air inlet side of duct, and the larger section of internal diameter is positioned close to the exhaust side of duct, ladder boundary
Face position is in the windward side of rotor 160.
Aircraft, including fuselage and ducted fan, ducted fan are arranged on fuselage perpendicular or parallelly, and ducted fan can
To vert or be fixedly mounted on fuselage, tilting drive drives multiple ducted fans in parallel first of relative fuselage
Put and verted between the relative vertical second place of fuselage.Change the direction of ducted fan by tilting drive, and then
To adjust the course track of aircraft, ducted fan can also connect each other independently of one another, individually change each ducted fan phase
To the angle of fuselage so that aircraft is more flexible.
Claims (10)
1. improve the servicing unit of ducted fan inlet air flow, it is characterised in that：
The servicing unit includes loudspeaker thin slice and diversion rib plate, and the loudspeaker thin slice is arranged on the interior of the lip wall of duct cylinder entrance
Side, gap is provided between the loudspeaker thin slice and the duct lip wall, diversion rib plate, the water conservancy diversion are provided with the gap
Floor extends along air flow direction.
2. improve the servicing unit of ducted fan inlet air flow as claimed in claim 1, it is characterised in that：
The quantity of the diversion rib plate is more than or equal to two.
3. improve the servicing unit of ducted fan inlet air flow as claimed in claim 2, it is characterised in that：
Truncated tapered of the gap along air current flow direction.
4. a kind of ducted fan, including rotor, drive device, deflector and duct cylinder, it is characterised in that：
The loudspeaker thin slice is arranged on the inner side of the lip wall of the duct cylinder entrance, the loudspeaker thin slice and the duct lip wall it
Between be provided with gap, diversion rib plate is provided with the gap, the diversion rib plate extends along air flow direction.
5. ducted fan as claimed in claim 4, it is characterised in that：
The duct cylinder inwall is stepped, and the less section of internal diameter is positioned close to the air inlet side of the duct, and internal diameter is larger
Section be positioned close to the exhaust side of the duct.
6. ducted fan as claimed in claim 4, it is characterised in that：
There are reinforcement and fixed plate between the drive device and the duct cylinder, have through hole in the fixed plate.
7. ducted fan as claimed in claim 4, it is characterised in that：
The one end of the deflector away from the duct cylinder has breach.
8. aircraft, including fuselage and ducted fan, the ducted fan is arranged on the fuselage, it is characterised in that：
The ducted fan is any ducted fan in claim 4 to 7.
9. aircraft as claimed in claim 8, it is characterised in that：
Multiple ducted fans are arranged on the fuselage perpendicular or parallelly.
10. aircraft as claimed in claim 8, it is characterised in that：
The multiple ducted fan is arranged on the fuselage in which can vert；
Tilting drive, drive the multiple ducted fan in the parallel first position of relative fuselage and relative fuselage vertical
Verted between the second place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720259740.6U CN207141374U (en) | 2017-03-16 | 2017-03-16 | Improve servicing unit, ducted fan and the aircraft of ducted fan inlet air flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720259740.6U CN207141374U (en) | 2017-03-16 | 2017-03-16 | Improve servicing unit, ducted fan and the aircraft of ducted fan inlet air flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207141374U true CN207141374U (en) | 2018-03-27 |
Family
ID=61658474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720259740.6U Expired - Fee Related CN207141374U (en) | 2017-03-16 | 2017-03-16 | Improve servicing unit, ducted fan and the aircraft of ducted fan inlet air flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207141374U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109204805A (en) * | 2018-10-22 | 2019-01-15 | 山东建筑大学 | A kind of DCB Specimen unmanned plane of external motor |
-
2017
- 2017-03-16 CN CN201720259740.6U patent/CN207141374U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109204805A (en) * | 2018-10-22 | 2019-01-15 | 山东建筑大学 | A kind of DCB Specimen unmanned plane of external motor |
| CN109204805B (en) * | 2018-10-22 | 2024-04-05 | 山东建筑大学 | External motor's two rotor unmanned aerial vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5258774B2 (en) | Wind power generator, generator for generating power from the atmosphere, and method for generating power from the moving atmosphere | |
| CN201100246Y (en) | An axis circulation wind engine for power engine | |
| CN103807102B (en) | The narrow pipe wind-collecting wind generating system of through type | |
| CN204551351U (en) | Hair-dryer | |
| CN106194834B (en) | Nested air outlet structure of wind tunnel | |
| CN203428021U (en) | Ducted fan | |
| CN102745328A (en) | Bypass with tip eddy-current confinement effect | |
| KR20110000643A (en) | Turbine enhancement system | |
| CN105715454A (en) | Omnibearing guide no-axis wind power generation device | |
| CN207141374U (en) | Improve servicing unit, ducted fan and the aircraft of ducted fan inlet air flow | |
| JP2007522997A (en) | Auxiliary drive by changing the direction of fluid flow | |
| CN208347938U (en) | A kind of multiple degrees of freedom single argument control combination power variable geometry inlet | |
| CN202468477U (en) | Axial flow fan (in machine room) for electric locomotives | |
| CN105584587A (en) | Self-suction steamship | |
| CN209180085U (en) | A kind of flow-guiding type air intake centrifugal blower | |
| CN205101284U (en) | Low noise ceiling fan | |
| CN114476048B (en) | Flange fusion propulsion structure based on rim driving technology | |
| CN203189329U (en) | Centrifugal fan for the cement industry | |
| CN205477913U (en) | Electric turbocharger | |
| KR101506050B1 (en) | Duct Structure for Ship | |
| CN201615072U (en) | Two-stage disrotatory bidirectional jetting blower | |
| CN208578748U (en) | AC transmission electric power locomotive traction ventilator and its locomotive | |
| CN103821772A (en) | Optimized control rod drive mechanism cooling fan | |
| US20060275122A1 (en) | Aerovortex mill 2 | |
| CN102032202B (en) | Gas extracting and exhausting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180327 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |