CN213948754U - Ducted fan - Google Patents
Ducted fan Download PDFInfo
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- CN213948754U CN213948754U CN202120056547.9U CN202120056547U CN213948754U CN 213948754 U CN213948754 U CN 213948754U CN 202120056547 U CN202120056547 U CN 202120056547U CN 213948754 U CN213948754 U CN 213948754U
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- China
- Prior art keywords
- fan
- duct
- paddle
- blade
- ducted
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- 238000009434 installation Methods 0.000 claims abstract description 4
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model is suitable for the technical field of aircrafts, and provides a ducted fan, which comprises a duct arranged outside, a first paddle fan and a second paddle fan, wherein the first paddle fan and the second paddle fan are arranged inside the duct; the installation position axes of the first blade fan and the second blade fan are overlapped and the rotation directions are opposite. The utility model discloses be provided with first paddle fan and second paddle fan in the duct, owing to turn to opposite, all obtain thrust to the duct rear accelerating gas flow, can make counter-torque offset each other, first paddle fan and the sharing duct of second paddle fan simultaneously, so small, light in weight, push away the weight ratio.
Description
Technical Field
The utility model belongs to the technical field of the aircraft, especially, relate to a duct fan.
Background
The ducted fan is a power propulsion system commonly used for aircrafts, is widely applied to aeromodelling, unmanned aerial vehicles and partial manned aircrafts, and can provide corresponding pushing/lifting force for the aircrafts.
Generally, the ducted fan can provide a larger thrust for the aircraft than a blade fan with the same diameter, and the fan is arranged inside the duct, so that the ducted fan has the advantages of high safety and low noise. However, most of the existing ducted fans are single rotating fans, which inevitably generate counter-torque to the aircraft, and are not beneficial to the propelling and flying of the aircraft.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a duct fan to solve among the prior art aircraft and adopt single rotation fan as power propulsion system mostly, can produce the problem of counter-torque force.
The embodiment of the utility model provides a so realize, a duct fan, including set up in the duct of the outside, and set up in first paddle fan and second paddle fan in the inside of said duct;
the installation position axes of the first blade fan and the second blade fan are overlapped and the rotation directions are opposite.
As a further aspect of the present invention: still including setting up first motor and the second motor in inside the duct.
As a further aspect of the present invention: the output end of the first motor is in driving connection with the first blade fan through a coupler, and the output end of the second motor is in driving connection with the second blade fan through a coupler.
As a further aspect of the present invention: and stators of the first motor and the second motor are respectively fixed on the first fairing and the second fairing.
As a further aspect of the present invention: the first fairing and the second fairing are fixed in the duct.
Compared with the prior art, the beneficial effects of the utility model are that: this duct fan, problem among the prior art, be provided with first paddle fan and second paddle fan in the duct, because first paddle fan and second paddle fan are by first motor and second motor drive respectively, the complicated mechanical drive mechanism of traditional coaxial anti-oar aircraft engine has been omitted, simple structure has, the advantage of high reliability, after starting first motor and second motor, first paddle fan and second paddle fan are driven the pivot simultaneously, because turn to the opposition, all obtain thrust to duct rear accelerating gas flow, can make anti-torsion offset each other, simultaneously because first paddle fan and second paddle fan share the duct, so small, light in weight, the high thrust-weight ratio.
Drawings
In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a schematic structural view of a ducted fan.
FIG. 2 is a schematic view of a first fairing in a ducted fan.
FIG. 3 is a schematic structural view of a second fairing in the ducted fan.
Fig. 4 is a schematic structural view of a first motor and a first blade fan in the ducted fan.
Fig. 5 is a schematic structural view of a second motor and a second blade fan in the ducted fan.
Fig. 6 is a top view of a ducted fan.
In the figure: 1-duct, 2-first motor, 3-second motor, 4-first blade fan, 5-second blade fan, 6-first fairing, 7-second fairing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description is provided for the specific embodiments of the present invention.
Example 1
As shown in fig. 1 to 6, an embodiment of the present invention provides a ducted fan, including a duct 1 disposed outside, and a first blade fan 4 and a second blade fan 5 disposed inside the duct 1; the installation positions of the first blade fan 4 and the second blade fan 5 are overlapped in axis and opposite in rotation direction.
This duct fan, to the problem among the prior art, be provided with first paddle fan 4 and second paddle fan 5 in duct 1, control first paddle fan 4 and second paddle fan 5 simultaneously and counter-rotate in duct 1, can make counter-torque offset each other, simultaneously because first paddle fan 4 and second paddle fan 5 share duct 1, so small, light in weight, push-to-weight ratio are high. In addition, the number of blades of the first and second blade fans 4 and 5 is not limited herein, and may be set and changed according to the actual thrust output demand and the torque characteristics of the driving device.
Further, the ducted fan further includes a first motor 2 and a second motor 3 disposed inside the duct 1.
Specifically, the output end of the first motor 2 is in driving connection with the first blade fan 4 through a coupler, and the output end of the second motor 3 is in driving connection with the second blade fan 5 through a coupler.
Because first paddle fan 4 and second paddle fan 5 are driven by first motor 2 and second motor 3 respectively, the complicated mechanical drive mechanism of traditional coaxial anti-oar aircraft engine has been saved, simple structure has, the advantage of high reliability, after starting first motor 2 and second motor 3, first paddle fan 4 and second paddle fan 5 are driven the pivot simultaneously, because turn to opposite, all to duct 1 rear direction accelerating gas flow and obtain thrust, can make anti-torsion cancel each other, simultaneously because first paddle fan and second paddle fan share the duct, so small, light in weight, push away the weight ratio high.
Example 2
As shown in fig. 1 to 3, in another embodiment of the present invention, the stators of the first motor 2 and the second motor 3 are respectively fixed on the first fairing 6 and the second fairing 7.
In particular, the first fairing 6 and the second fairing 7 are fixed inside the duct 1.
The provision of the first fairing 6 and the second fairing 7 improves aerodynamic performance.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. A ducted fan, characterized by comprising an externally disposed duct (1), and a first blade fan (4) and a second blade fan (5) disposed inside the duct (1);
the installation position axes of the first blade fan (4) and the second blade fan (5) are overlapped and the rotation directions are opposite.
2. Ducted fan according to claim 1, further comprising a first electric machine (2) and a second electric machine (3) arranged inside the ducted fan (1).
3. Ducted fan according to claim 2, characterized in that the output of the first electric motor (2) is drivingly connected to a first blade fan (4) by means of a coupling and the output of the second electric motor (3) is drivingly connected to a second blade fan (5) by means of a coupling.
4. Ducted fan according to claim 2, characterized in that the stators of the first (2) and second (3) electrical machines are fixed to a first (6) and a second (7) fairing, respectively.
5. Ducted fan according to claim 4, characterized in that the first fairing (6) and the second fairing (7) are fixed inside the ducted (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120056547.9U CN213948754U (en) | 2021-01-11 | 2021-01-11 | Ducted fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120056547.9U CN213948754U (en) | 2021-01-11 | 2021-01-11 | Ducted fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213948754U true CN213948754U (en) | 2021-08-13 |
Family
ID=77198773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120056547.9U Expired - Fee Related CN213948754U (en) | 2021-01-11 | 2021-01-11 | Ducted fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213948754U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112407247A (en) * | 2021-01-11 | 2021-02-26 | 纪鹏 | Ducted fan |
-
2021
- 2021-01-11 CN CN202120056547.9U patent/CN213948754U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112407247A (en) * | 2021-01-11 | 2021-02-26 | 纪鹏 | Ducted fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210813 Termination date: 20220111 |