CN219428401U

CN219428401U - Blade of making an uproar falls and unmanned aerial vehicle who contains it

Info

Publication number: CN219428401U
Application number: CN202320566579.2U
Authority: CN
Inventors: 王超; 刘进; 田琛; 张昊; 杨凡
Original assignee: Tongxin Technology Huzhou Co ltd
Current assignee: Huzhou Institute of Zhejiang University
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-07-28
Anticipated expiration: 2033-03-22

Abstract

The utility model discloses a noise reduction blade and an unmanned aerial vehicle comprising the same, wherein a diversion protrusion is arranged on the surface of the rear blade surface of the noise reduction blade and is used for effectively cutting and carding large vortex generated by the rotation of the blade into countless small vortex; the tail edge of the rear blade surface is provided with uniformly distributed zigzag concave so as to effectively reduce aerodynamic noise caused by blade tip stall; the noise reduction blade is in a distorted 8-shaped structure, and the overall annular shape not only increases the stability of the structure, but also reduces the probability of cutting, shearing or touching objects by the blade; the unmanned aerial vehicle of paddle of making an uproar falls in installation can effectively reduce the volume.

Description

Blade of making an uproar falls and unmanned aerial vehicle who contains it

Technical Field

The utility model relates to the field of unmanned aerial vehicles, in particular to a noise reduction blade and an unmanned aerial vehicle comprising the same.

Background

The noise source head of the unmanned aerial vehicle mainly generates motor rotation and blade cutting air; at present, most unmanned aerial vehicle power basically adopts a battery to drive a motor to drive a blade, the noise level of the motor is lower, and the proportion of the motor in the whole noise is not large, so that the noise generated by the blade is more remarkable.

The reason that the paddle can produce great noise is that the existing paddle can not effectively cut and comb large vortex produced by the paddle when rotating into countless small vortex, can not effectively separate viscous airflow on the suction surface of the paddle, plays a role in guiding, can not form ideal airflow, and is high in noise.

Disclosure of Invention

The technical scheme of the utility model for realizing the purpose is as follows: a noise reduction blade comprises a mounting part base body and a blade base body;

the mounting part base body is used for being connected with the motor;

the blade matrix consists of front and rear blade surfaces; the front blade surface and the rear blade surface are parallel to each other; the front blade surface and the rear blade surface of the blade substrate are connected into a ring shape after extending out from the side surface of the mounting part substrate; the whole paddle presents an 8 shape.

Further, the blade matrix section is an airfoil section; the section of the airfoil is in a shape of a round head and a pointed tail.

Further, the tail edge of the rear blade surface of the blade matrix is provided with uniformly distributed zigzag concave.

Further, the tail end of the rear blade surface of the blade matrix is provided with uniformly distributed guide bulges; the front end of the guide bulge presents a tip; the guide protrusions are respectively positioned between the two zigzag concave parts.

Further, the included angle between the front and rear blade surfaces of the blade matrix and the vertical direction of the mounting part matrix is 25-45 degrees.

Further, the area length of the flow guiding bulges is smaller than that of the zigzag concave areas.

The embodiment of the application also provides an unmanned aerial vehicle, comprising the noise reduction paddle.

In summary, according to the noise reduction blade and the unmanned aerial vehicle comprising the same, the surface of the rear blade surface of the noise reduction blade is provided with the guide protrusions, and the guide protrusions are used for effectively cutting and carding large vortex generated by the blade during rotation into countless small vortex; the tail edge of the rear blade surface is provided with uniformly distributed zigzag concave so as to effectively reduce aerodynamic noise caused by blade tip stall; the noise reduction blade is in a distorted 8-shaped structure, and the overall annular shape not only increases the stability of the structure, but also reduces the probability of cutting, shearing or touching objects by the blade; the unmanned aerial vehicle of paddle of making an uproar falls in installation can effectively reduce the volume.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description will be given below of the drawings that are needed in the embodiments or the prior art descriptions, it being obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of a noise reduction blade according to the present utility model;

FIG. 2 is a schematic cross-sectional view of an airfoil of a noise reduction blade according to the present utility model;

FIG. 3 is a perspective view of the zigzag dimple of the present utility model;

fig. 4 is a perspective view of a deflector protrusion according to the present utility model.

In the figure, 1, a mounting part base body; 2. a blade matrix; 3. zigzag concave; 4. a flow guiding protrusion;

2-1, airfoil section.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model become more apparent, the technical solutions in the embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings in the embodiments of the present utility model. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the utility model. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

In the description of the present utility model, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present utility model.

The utility model will be described in detail with reference to the accompanying drawings, as shown in fig. 1, a noise reduction blade includes a mounting portion base body 1 and a blade base body 2;

the mounting part base body 1 is used for being connected with a motor;

the blade matrix 2 consists of front and rear blade surfaces; the front blade surface and the rear blade surface are parallel to each other; the front blade surface and the rear blade surface of the blade base body 2 are connected into a ring shape after extending out from the side surface of the installation part base body 1; the whole paddle presents an 8 shape.

In other embodiments, the blade base body 2 is uniformly distributed along the circumferential direction of the installation part base body 1 by 120 degrees to form three-blade noise reduction blades, and the blade base body 2 is uniformly distributed along the circumferential direction of the installation part base body 1 by 90 degrees to form four-blade noise reduction blades.

As shown in fig. 2, the section of the blade matrix 2 is an airfoil section 2-1; the section 2-1 of the airfoil is in a shape of a round head, a pointed tail.

As shown in fig. 3, the tail edge of the rear blade surface of the blade matrix 2 is provided with zigzag concave 3 which are uniformly distributed, and the zigzag concave 3 is beneficial to reducing aerodynamic noise caused by blade tip stall.

As shown in fig. 4, the tail end of the rear blade surface of the blade substrate 2 is provided with uniformly distributed guide protrusions 4; the front end of the guide bulge 4 presents a tip, and the guide bulge 4 is beneficial to effectively cutting and carding large vortex generated by the blade during rotation into countless small vortex; the guide protrusions 4 are respectively located between the two zigzag concave grooves 3.

The included angle between the front and rear blade surfaces of the blade matrix 2 and the vertical direction of the mounting part matrix 1 is 25-45 degrees.

The area length of the diversion protrusion 4 is smaller than that of the zigzag indent 3.

The embodiment also provides an unmanned aerial vehicle comprising the noise reduction blade.

In summary, the surface of the rear blade surface of the noise reduction blade is provided with the guide protrusions 4, so that large vortex generated when the blade rotates can be effectively cut and carded into countless small vortices; the tail edge of the rear blade surface is provided with the uniformly distributed zigzag indent 3, so that aerodynamic noise caused by blade tip stall is effectively reduced; the noise reduction blade is in a distorted 8-shaped structure, and the overall annular shape not only increases the stability of the structure, but also reduces the probability of cutting, shearing or touching objects by the blade; the unmanned aerial vehicle of paddle of making an uproar falls in installation can effectively reduce the volume.

The above technical solution only represents the preferred technical solution of the present utility model, and some changes that may be made by those skilled in the art to some parts of the technical solution represent the principles of the present utility model, and the technical solution falls within the scope of the present utility model.

Claims

1. The utility model provides a blade of making an uproar falls which characterized in that: comprises a mounting part base body (1) and a blade base body (2);

the mounting part base body (1) is used for being connected with a motor;

the blade matrix (2) consists of front and rear blade surfaces; the front blade surface and the rear blade surface are parallel to each other; the front blade surface and the rear blade surface of the blade base body (2) are connected into a ring shape after extending out from the side surface of the installation part base body (1); the whole paddle presents an 8 shape.

2. The noise reduction blade of claim 1, wherein: the section of the blade matrix (2) is an airfoil section (2-1); the section (2-1) of the airfoil is in a shape of a round head and a pointed tail.

3. The noise reduction blade of claim 1, wherein: the tail edge of the rear blade surface of the blade matrix (2) is provided with zigzag concave (3) which are uniformly distributed.

4. A noise reducing blade according to claim 3, wherein: the tail end of the rear blade surface of the blade matrix (2) is provided with uniformly distributed guide bulges (4); the front end of the guide bulge (4) presents a tip; the guide protrusions (4) are respectively positioned between the two zigzag concave grooves (3).

5. The noise reduction blade of claim 1, wherein: the included angle between the front and rear blade surfaces of the blade matrix (2) and the vertical direction of the installation part matrix (1) is 25-45 degrees.

6. The noise reduction blade of claim 4, wherein: the area length of the diversion bulge (4) is smaller than that of the zigzag indent (3).

7. An unmanned aerial vehicle, its characterized in that: further comprising a noise reducing blade according to any of claims 1-6.