CN215851855U

CN215851855U - Durable ducted fan

Info

Publication number: CN215851855U
Application number: CN202121503103.1U
Authority: CN
Inventors: 侯志坤
Original assignee: Dongguan Suolide Model Technology Co ltd
Current assignee: Foshan Zhengze Model Technology Co ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-02-18
Anticipated expiration: 2031-06-29

Abstract

The utility model discloses a durable ducted fan, which comprises: the culvert body is of a hollow structure, and an installation part is arranged in the culvert body; a drive device disposed within the ductal body and mounted on the mounting member; the fan blades are rotatably arranged on the rotating shaft, the plurality of fan blades are arranged on the peripheral side surface of the rotating body in a central emission shape, and a metal clamping block is arranged in the rotating body; through being equipped with the metal fixture block in the rotor at the flabellum, the metal fixture block is located the axis direction of rotor and is connected with the pivot block, thereby drive arrangement is when driving the flabellum and rotate, the pivot is to the effort of flabellum act on the metal fixture block, and be the spacing relation of block between metal and the metal between metal fixture block and the pivot, make flabellum and drive arrangement junction can not take place to warp after long-time high-speed rotation, improve the life of ducted fan, the security performance of aircraft has still been improved.

Description

Durable ducted fan

Technical Field

The utility model relates to the field of aeromodelling, in particular to a durable ducted fan.

Background

The ducted fan consists of a duct, fan blades contained in the duct and a driving device. At the same power consumption, the ducted fan generates a greater pulling force than an isolated propeller of the same diameter. Meanwhile, due to the ring-included function of the duct, the structure is compact, the aerodynamic noise is low, and the use safety is good, so that the duct is used as a thrust or lift device and is applied to the design of an aircraft. For example: a ducted tail rotor of a helicopter, a fixed wing aircraft wing or fuselage fused ducted fan lift-increasing device and the like.

Flabellum among the current ducted fan generally adopts plastics injection moulding, pivot among the drive arrangement is the metal material, the pivot is through being connected with the flabellum block and driving the flabellum and realize high-speed rotation, thereby provide thrust for the aircraft, along with the long-time high-speed operation of ducted fan, the flabellum probably causes the deformation damage with the place of pivot contact, drive arrangement can the rising temperature after high-speed operation simultaneously, the temperature can be through the pivot transmission to the flabellum, make the flabellum soften with the position of pivot contact is heated, thereby more easy deformation damage under the atress condition, shorten the life of ducted fan greatly, and seriously influence the security performance of aircraft.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides the durable ducted fan, so that the joint of the fan blade and the driving device can not deform after rotating at high speed for a long time, the service life of the ducted fan is prolonged, and the safety performance of an aircraft is improved.

A durable ducted fan according to an embodiment of the first aspect of the present invention includes: the culvert body is of a hollow structure, and an installation part is arranged in the culvert body; the driving device is arranged in the duct body and is arranged on the mounting piece, and a rotating shaft for providing power output is arranged on the driving device; the flabellum, the flabellum is rotationally installed in the pivot, the flabellum is including rotor and a plurality of flabellum, a plurality of flabellum is central transmission form and sets up on the week side of rotor, be equipped with the metal fixture block in the rotor, the metal fixture block is located the axis of rotation of rotor and is connected with the pivot block, pivot accessible metal fixture block drives the flabellum and provides thrust at this internal rotation of duct.

The durable ducted fan provided by the embodiment of the utility model has at least the following beneficial effects:

through being equipped with the metal fixture block in the rotor at the flabellum, the metal fixture block is located the axis direction of rotor and is connected with the pivot block, thereby drive arrangement is when driving the flabellum and rotate, the pivot is to the effort of flabellum act on the metal fixture block, and be the spacing relation of block between metal and the metal between metal fixture block and the pivot, make flabellum and drive arrangement junction can not take place to warp after long-time high-speed rotation, improve the life of ducted fan, the security performance of aircraft has still been improved.

According to some embodiments of the utility model, a plurality of reinforcing ribs are arranged between the mounting piece and the inner wall surface of the duct body, the reinforcing ribs are arranged on the side wall surface of the mounting piece in a central emission manner, and one end of each reinforcing rib, which is close to the fan blade, is in a bent structure.

According to some embodiments of the present invention, the mounting member has a mounting groove therein, the driving device is mounted in the mounting groove, and a heat dissipation groove for assisting the driving device in dissipating heat is formed on a side wall of the mounting member.

According to some embodiments of the utility model, a side of the rotor remote from the drive is provided with a fairing for reducing wind resistance.

According to some embodiments of the present invention, the rotor has a mounting hole formed therethrough, and the rotating shaft passes through the mounting hole and is mounted to the cowl by a fastener.

According to some embodiments of the present invention, the duct body includes an air inlet and an air outlet, the fan blades are disposed at the air inlet, and the air inlet is configured as a trumpet-shaped structure for increasing an air inlet amount.

According to some embodiments of the utility model, the outer side surface of the duct body is convexly provided with a locking block for fixedly connecting with the outside, and the locking block is provided with a locking hole for fastening and connecting a fastener.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

The utility model is further described with reference to the following figures and examples, in which:

FIG. 1 is a perspective view of a durable ducted fan in accordance with an embodiment of the present invention;

FIG. 2 is an exploded view of the durable ducted fan shown in FIG. 1;

figure 3 is a perspective schematic view of the culvert body shown in figure 1;

FIG. 4 is a perspective view of the drive device shown in FIG. 1;

FIG. 5 is a cross-sectional view of the fan blade and the driving device shown in FIG. 1;

figure 6 is a cross-sectional view of the ducted body, fan blades, and fairing shown in figure 1.

Reference numerals:

100 culvert bodies, 110 mounting pieces, 111 heat dissipation grooves, 112 mounting grooves, 120 reinforcing convex ribs, 130 locking blocks, 131 locking holes,

200 driving devices, 210 rotating shafts, 211 clamping grooves,

300 fan blades, 310 fan blades, 320 rotating body, 321 metal fixture block, 322 clamping part, 323 mounting hole,

400 fairing.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

A durable ducted fan according to an embodiment of the present invention is described below with reference to fig. 1 to 6.

As shown in fig. 1 to 6, a durable ducted fan according to an embodiment of the present invention includes: duct body 100, drive arrangement 200 and flabellum 300.

The duct body 100 is a hollow structure, and the duct body 100 is provided with an installation part 110; the driving device 200 is disposed in the ducted body 100 and mounted on the mounting member 110, and the driving device 200 has a rotating shaft 210 for providing power output; the fan blade 300 is rotatably mounted on the rotating shaft 210, the fan blade 300 includes a rotating body 320 and a plurality of fan blades 310, the plurality of fan blades 310 are arranged on the peripheral side surface of the rotating body 320 in a central emission shape, a metal fixture block 321 is arranged in the rotating body 320, the metal fixture block 321 is located on the rotating axis of the rotating body 320 and is connected with the rotating shaft 210 in a clamping manner, and the rotating shaft 210 can drive the fan blade 300 to rotate in the duct body 100 through the metal fixture block 321 to provide thrust.

For example, as shown in fig. 1 to 6, the duct body 100 is a hollow structure, a mounting part 110 may be disposed in the duct body 100, the mounting part 110 may be disposed at a middle position inside the duct body 100, the driving device 200 is disposed in the duct body 100 and may be mounted on the mounting part 110, a rotating shaft 210 for providing power output may be disposed on the driving device 200, the fan blade 300 may be rotatably mounted on the rotating shaft 210, the fan blade 300 may include a rotating body 320 and a plurality of fan blades 310, the rotating body 320 is of a cylindrical structure, the plurality of fan blades 310 are disposed on a circumferential side surface of the rotating body 320 in a central emission shape, a metal latch 321 is disposed in the rotating body 320, the metal latch 321 is located in an axial direction of the rotating body 320 and is engaged with the rotating shaft 210, and the rotating shaft 210 may drive the fan blade 300 to rotate in the duct body 100 through the metal latch 321 to provide thrust.

In this embodiment, the duct body 100, the rotating body 320, and the fan blades 310 are all formed by plastic injection molding, as shown in fig. 5, the metal latch 321 is in a cylindrical sleeve-shaped structure, the opening of the metal latch 321 near one end of the driving device 200 is symmetrically provided with a fastening portion 322, as shown in fig. 4, the rotating shaft 210 of the driving device 200 is concavely provided with a fastening groove 211, when assembling, the rotating shaft 210 penetrates through the metal latch 321, and the fastening groove 211 is fastened in the fastening portion 322 of the metal latch 321, and the metal latch 321 is directly molded in the rotating body 320 during the injection molding process of the rotating body 320.

Specifically, through being equipped with metal fixture block 321 in rotor 320 at flabellum 300, metal fixture block 321 is located the axis direction of rotor 320 and is connected with pivot 210 block, thereby drive arrangement 200 is when driving flabellum 300 and rotate, pivot 210 acts on metal fixture block 321 to the effort of flabellum 300, and be the spacing relation of block between metal and the metal between metal fixture block 321 and the pivot 210, make flabellum 300 and drive arrangement 200 junction can not take place to warp after rotating for a long time at a high speed, improve the life of ducted fan, the security performance of aircraft has still been improved.

In some embodiments of the present invention, a plurality of reinforcing ribs 120 are disposed between the mounting member 110 and the inner wall surface of the ducted body 100, the plurality of reinforcing ribs 120 are disposed on the side wall surface of the mounting member 110 in a central emission manner, and one end of the reinforcing ribs 120 near the fan blades 300 is in a bent structure. For example, as shown in fig. 2, 3 and 6, in the present embodiment, the number of the reinforcing ribs 120 is 7, the 7 reinforcing ribs 120 are arranged between the side wall surface of the mounting member 110 and the inner wall surface of the duct body 100 in a center emission manner, a hollow structure is formed between two adjacent reinforcing ribs 120, air can pass through two adjacent reinforcing ribs 120 along the axial direction of the duct body 100, the reinforcing ribs 120 mainly function to fix the mounting member 110 in the middle of the inside of the duct body 100, wherein as shown in fig. 6, the outer side surfaces of the reinforcing ribs 120 are in a cambered surface structure, all the reinforcing ribs 120 are bent toward the same direction, and the bending direction of the reinforcing ribs 120 is opposite to the bending direction of the fan blades 310, assuming that the fan blades 310 rotate in the counterclockwise direction, the air becomes an air flow rotating in the counterclockwise direction after passing through the fan blades 310, thereby forming a thrust force, the bending direction of the reinforcing ribs 120 is designed to be opposite to the bending direction of the fan blades 310, the air flow generated after the rotation of the fan blades 310 can be guided better, and the flow speed of the air flow inside the duct body 100 is increased, so that a stronger thrust is formed.

In some embodiments of the present invention, a mounting groove 112 is formed in the mounting member 110, the driving device 200 is mounted in the mounting groove 112, and a heat dissipation groove 111 for assisting the driving device 200 in dissipating heat is formed on a side wall of the mounting member 110. For example, as shown in fig. 2, 3 and 6, the mounting groove 112 is a columnar structure, the driving device 200 is mounted in the mounting groove 112, the rotating shaft 210 of the driving device 200 passes through the mounting member 110 to be connected with the fan blade 300 in a clamping manner, the side wall of the mounting member 110 covers the outer side surface of the driving device 200, and the heat dissipation groove 111 is formed in the side wall, so that the contact area between the mounting member 110 and the driving device 200 can be reduced, the heat dissipation efficiency of the driving device 200 is improved, the performance of the driving device 200 is improved, and the service life of the driving device 200 can be prolonged.

In some embodiments of the present invention, a side of the rotating body 320 remote from the driving device 200 is provided with a cowl 400 for reducing wind resistance. For example, as shown in fig. 1, 3 and 6, the side of the rotating body 320 far away from the driving device 200 is the side of the fan blades 300 that enters air after rotating, and the fairing 400 is disposed on the rotating body 320, so that when air enters, the airflow in front of the rotating body 320 is dispersed into the fan blades 310 under the action of the fairing, thereby reducing the wind resistance of the rotating body 320 to the whole ducted fan.

In some embodiments of the present invention, a mounting hole 323 is formed through the rotating body 320, and the outer end of the rotating shaft 210 passes through the mounting hole 323 and is mounted with the cowl 400 by a fastener. For example, as shown in fig. 1, 3 and 4, the fan blades 300 are disposed between the fairing 400 and the driving device 200, wherein the rotating shaft 210 passes through the mounting member 110 and the fan blades 300 are mounted with the fairing 400 through a fastener, so that the fairing 400 can limit the movement of the fan blades 300 in the axial direction of the rotating shaft 210, and meanwhile, the fairing 400 does not obstruct the rotation of the fan blades 300 in the ducted body 100, so that the fairing 400 performs the functions of backflow and limiting the fan blades 300 in the whole ducted fan.

In some embodiments of the present invention, the duct body 100 includes an air inlet and an air outlet, and the fan blades 300 are disposed at the air inlet, which is configured as a trumpet-shaped structure for increasing the air intake. For example, as shown in fig. 1 to 3 and 6, the air inlet and the air outlet of the duct body 100 may be changed along with the different rotation directions of the fan blades 300, in this embodiment, one side of the duct body 100 where the fan blades 300 are disposed is the air inlet, one side close to the driving device 200 is the air outlet, the air inlet is disposed in a trumpet-shaped structure, the aperture of the outer end of the air inlet is larger, the air inlet is disposed in the trumpet-shaped structure, so that the air inlet amount at the air inlet can be effectively increased, and the thrust generated by the duct fan is increased from another angle.

In some embodiments of the present invention, the outer side surface of the culvert body 100 is convexly provided with a locking block 130 for fixedly connecting with the outside, and the locking block 130 is provided with a locking hole 131 for fastening a fastener. For example, as shown in fig. 1 to 3, the ducted fan of the present product is mainly installed on an aircraft to provide thrust required by flight for the aircraft, so a locking block 130 fixedly connected with the aircraft is required to be arranged on the ducted body 100, and a locking hole 131 is arranged on the locking block 130, so that a worker can use a fastener to firmly fix the ducted fan on the aircraft through the locking hole 131.

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 those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

Claims

1. Durable type ducted fan, its characterized in that includes:

the culvert body is of a hollow structure, and an installation part is arranged in the culvert body;

the driving device is arranged in the duct body and is arranged on the mounting piece, and a rotating shaft for providing power output is arranged on the driving device;

the flabellum, the flabellum is rotationally installed in the pivot, the flabellum is including rotor and a plurality of flabellum, a plurality of flabellum is central transmission form and sets up on the week side of rotor, be equipped with the metal fixture block in the rotor, the metal fixture block is located the axis of rotation of rotor and is connected with the pivot block, pivot accessible metal fixture block drives the flabellum and provides thrust at this internal rotation of duct.

2. The durable ducted fan in accordance with claim 1, wherein a plurality of reinforcing ribs are provided between the installation member and an inner wall surface of the ducted body, the plurality of reinforcing ribs are provided on a side wall surface of the installation member in a center-radiating manner, and an end of the reinforcing rib adjacent to the fan blades is in a bent structure.

3. The durable ducted fan in accordance with any one of claims 1 or 2, wherein the mounting member has a mounting groove formed therein, the driving device is mounted in the mounting groove, and a heat dissipation groove for assisting the driving device in dissipating heat is formed on a side wall of the mounting member.

4. The durable ducted fan in accordance with claim 1, wherein a side of the rotor away from the driving means is provided with a cowling for reducing wind resistance.

5. The durable ducted fan in accordance with claim 4, wherein a mounting hole is formed through the rotor, and the shaft is mounted to the cowl through the mounting hole by a fastening member.

6. The durable ducted fan according to claim 1, wherein the ducted body includes an air inlet and an air outlet therein, the fan blades are provided at the air inlet, and the air inlet is provided in a trumpet-shaped structure for increasing an intake air amount.

7. The durable ducted fan according to any one of claims 1 to 6, wherein the outer side surface of the ducted body is protruded with a locking block for fixedly connecting with the outside, and the locking block is provided with a locking hole for fastening a fastening member.