WO2020001273A1

WO2020001273A1 - Heat dissipation structure and unmanned aerial vehicle

Info

Publication number: WO2020001273A1
Application number: PCT/CN2019/090936
Authority: WO
Inventors: 梁智颖
Original assignee: 深圳市道通智能航空技术有限公司
Priority date: 2018-06-25
Filing date: 2019-06-12
Publication date: 2020-01-02
Also published as: CN208868303U

Abstract

The present utility model relates to a heat dissipation structure and an unmanned aerial vehicle. The heat dissipation structure comprises: a housing; a heat dissipation fan provided inside the housing; and a first air inlet and a second air inlet provided opposite to each other and a first outlet and a second outlet provided opposite to each other. The air inlet direction of the first air inlet and of the second air inlet are perpendicular to the plane where the heat dissipation fan is located, and the air outlet direction of the first air outlet and of the second air outlet are coplanar with the plane where the heat dissipation fan is located. The heat dissipation structure provided by embodiments of the present utility model has the first air inlet and the second air inlet provided opposite to each other and the first air outlet and the second air outlet provided opposite to each other, features a simple structure, and has high heat dissipation efficiency. When applied to an unmanned aerial vehicle, the heat dissipation structure can improve the heat dissipation performance of the unmanned aerial vehicle and economizes the heat dissipation space of the unmanned aerial vehicle, and improves the heat dissipation performance to the maximum extent while controlling the overall weight of the unmanned aerial vehicle, such that the unmanned aerial vehicle has high safety and reliability.

Description

Radiating structure and unmanned aerial vehicle

[Related Application Cross Reference]

The application claims the priority of a Chinese patent application filed on June 25, 2018 with an application number of 201820980901.5 and an application name of "heat dissipation structure and unmanned aerial vehicle", the entire contents of which are incorporated herein by reference.

[Technical Field]

The utility model relates to the technical field of heat dissipation, in particular to an unmanned aerial vehicle and a heat dissipation structure thereof.

【Background technique】

In recent years, with the improvement of science and technology and people's living standards, the application of unmanned aerial vehicles has become increasingly popular worldwide, especially in the fields of agriculture, transportation, public safety, mining, film and television entertainment, and sports. Demand is gradually increasing.

When the UAV is working, the circuit board installed inside the fuselage will generate a lot of heat. The heat generated by the circuit board will affect its normal operation. When the UAV works in a high temperature environment for a long time, it is not only inefficient, but also It affects the service life, so it is necessary to timely dissipate the internal heat to the external environment of the unmanned aerial vehicle to ensure that the working temperature of the internal parts of the unmanned aerial vehicle is normal. At present, unmanned aerial vehicles dissipate heat by installing a heat dissipation structure inside the fuselage. However, the existing heat dissipation structures usually have an air inlet and an air outlet, which have poor heat dissipation efficiency and cannot meet the needs of the unmanned aerial vehicle.

Therefore, there is an urgent need for a heat dissipation structure with good heat dissipation effect and an unmanned aerial vehicle having the heat dissipation structure.

[Utility Model Contents]

The embodiment of the utility model aims to solve the technical problems existing in the prior art. To this end, embodiments of the present invention provide a heat dissipation structure and an unmanned aerial vehicle having the heat dissipation structure.

In order to solve the above technical problem, a technical solution adopted by the present utility model is to provide a heat dissipation structure, which includes:

case;

A cooling fan disposed in the casing; and

The first air inlet and the second air inlet that are oppositely disposed, and the first air outlet and the second air outlet that are oppositely disposed, wherein the air inlet direction of the first air inlet and the second air inlet is perpendicular to the air inlet. In a plane where the cooling fan is located, the direction of the air from the first air outlet and the second air outlet is coplanar with the plane where the cooling fan is located.

In some embodiments, the first air inlet, the second air inlet, the first air outlet, and the second air outlet are all in communication.

In some embodiments, the housing includes a bottom wall, a top wall parallel to the bottom wall, and four side walls connecting the bottom wall and the top wall, the bottom wall, the top wall, and the four walls A side wall surrounds a receiving cavity, and the cooling fan is accommodated in the receiving cavity.

In some embodiments, a plane on which the cooling fan is located is parallel to the bottom wall, and the first air inlet and the second air inlet are respectively disposed on the top wall and the bottom wall, and the first The air inlet direction of an air inlet is opposite to the air inlet direction of the second air inlet and both point to the cooling fan; the first air outlet and the second air outlet are respectively disposed in the housing of the housing. On two opposite sidewalls of the four sidewalls, the direction of the air outlet of the first air outlet is opposite to the direction of the air outlet of the second air outlet and both face away from the cooling fan.

In some embodiments, the cooling fan includes a hub, and a plurality of blades evenly arranged on the hub; an air inlet region is formed between the plurality of blades; and when the cooling fan is working, The airflow enters the air inlet area of the cooling fan through the first air inlet and the second air inlet, and forms a first branch flow and a second branch flow through the air inlet area; the first branch The branch stream and the second branch stream are blown out through the first air outlet and the second air outlet, respectively.

In some embodiments, the cooling fan has a cylindrical shape, and the first air inlet and the second air inlet are equal in size and smaller than a cross-sectional area of the cooling fan. The sizes of the second air outlets are equal and smaller than the longitudinal cross-sectional area of the cooling fan.

In some embodiments, the first air inlet and the second air inlet are circular, and the circular diameter is smaller than the diameters of the two circular end faces of the cooling fan.

In some embodiments, the first air outlet and the second air outlet are rectangular, the length of the rectangle is smaller than the diameter of the two circular end faces of the cooling fan, and the width of the rectangle is smaller than that of the cooling fan. height.

In order to solve the above technical problem, another technical solution adopted by the present utility model is to provide an unmanned aerial vehicle, which includes a fuselage, an airframe connected to the airframe, and a power device provided on the airframe, It is characterized in that the above-mentioned heat dissipation structure is installed in the body.

In some embodiments, the plane where the fuselage of the UAV is located is parallel to the plane where the heat dissipation structure is located.

In some embodiments, the fuselage is provided with a first air inlet opening at a position corresponding to the first air inlet on an upper side thereof, and a second air opening is provided at a position corresponding to the second air inlet on a lower side thereof. Into the air opening.

In some embodiments, a first circuit board and / or a second circuit board are further installed in the fuselage, the first circuit board is disposed between the first air inlet opening and the heat dissipation structure, and / Or, the second circuit board is disposed between the second air inlet opening and the heat dissipation structure.

In some embodiments, the first air outlet and the second air outlet respectively face two sides of the fuselage.

In some embodiments, the fuselage is provided with a first air outlet at a position corresponding to the first air outlet on the left side thereof, and a second air opening is provided at a position corresponding to the second air inlet on the right side thereof. Out of the wind.

In some embodiments, the fuselage is further provided with a wind guide member, one end of the wind guide member is connected to the fuselage, and the other end is connected to the first air inlet and / or the second air inlet .

In some embodiments, a vibration absorbing member is further provided on the periphery of the heat dissipation structure.

The beneficial effect of the embodiment of the utility model is that the structure of the heat dissipation provided by the embodiment of the utility model has a first air inlet and a second air inlet opposite to each other, and a first air outlet and a second air outlet opposite to each other. Simple and high heat dissipation efficiency. Further, the application of the heat dissipation structure to an unmanned aerial vehicle can correspondingly improve the heat dissipation performance of the unmanned aerial vehicle. At the same time, the simple structure of the heat dissipation structure can save heat dissipation space and maximize the weight of the unmanned aerial vehicle while controlling the overall weight The heat dissipation performance is improved to the limit, so that the UAV has higher safety and reliability.

[Brief Description of the Drawings]

In order to explain the technical solution of the embodiments of the present invention more clearly, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. For those of ordinary skill in the art, other embodiments may be obtained based on these drawings without paying creative labor.

FIG. 1 is a schematic perspective structural view of an embodiment of an unmanned aerial vehicle of the present invention;

2 is a cross-sectional view of the unmanned aerial vehicle shown in FIG. 1;

3 is a front view of a heat dissipation structure in the unmanned aerial vehicle shown in FIG. 2;

4 is a perspective view of a heat dissipation structure in the unmanned aerial vehicle shown in FIG. 2;

FIG. 5-a is a schematic diagram of the airflow direction passing through the heat dissipation structure when the unmanned aerial vehicle shown in FIG. 2 is moving forward or backward;

FIG. 5-b is a schematic diagram of the airflow direction passing through the heat dissipation structure when the unmanned aerial vehicle shown in FIG. 2 is flying in the left direction in the figure; FIG.

FIG. 5-c is a schematic diagram of the airflow direction passing through the heat dissipation structure when the unmanned aerial vehicle shown in FIG. 2 is flying in the right direction in the figure.

【detailed description】

In order to facilitate understanding of the present utility model, the technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

In the description of this application, it should be noted that the terms "center", "upper", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplified description, and does not indicate or imply that the device or element referred to must have a specific orientation, a specific orientation Construction and operation are therefore not to be construed as limitations on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.

In the description of this application, it should be noted that the terms "installation", "connected", and "connected" should be understood in a broad sense, unless explicitly stated and limited otherwise. For example, they may be fixed connections or removable. Connection, or integral connection; it can be mechanical or electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.

In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

The heat dissipation structure provided by the embodiment of the present utility model is a structure for dissipating heat from electronic equipment, and is suitable for many electronic equipment having heating components such as circuit boards. Common application scenarios include: laptop computers, heaters, Audio, projector, water dispenser, game console, electric car, etc. The heat dissipation structure provided by the embodiment of the present utility model can be particularly applied to various movable objects internally equipped with electronic components such as circuit boards that generate heat, including but not limited to unmanned aerial vehicles (UAV), People, ships, robotic arms, robots, etc. The embodiment of the present invention will be described by taking an unmanned aerial vehicle as an example. Applying this heat dissipation structure to an unmanned aerial vehicle can correspondingly improve the heat dissipation performance of the unmanned aerial vehicle. At the same time, because the structure of the heat dissipation structure is simple, it can save heat dissipation space and maximize the weight of the unmanned aerial vehicle while maximizing it. The heat dissipation performance makes the UAV have higher safety and reliability.

Please refer to FIG. 1 together, which is an unmanned aerial vehicle 10 provided by one embodiment of the present invention. The unmanned aerial vehicle 10 includes a fuselage 100, an airframe 200 connected to the airframe 100, and a power component connected to the airframe 200. The power assembly is mounted on the airframe 200 and is used to provide power to the unmanned aerial vehicle 10. The power assembly includes a motor 300 and a propeller (not shown) mounted on the motor 300, and each propeller is driven by a motor 300 corresponding to the propeller to rotate to generate a lift or a thrust for flying the unmanned aerial vehicle. In other possible embodiments, the illustrated power assembly may further include an electric adjustment board (not shown) disposed inside the arm 200 or the fuselage 100, and the electric adjustment board is configured to generate the electric power according to a throttle controller or a throttle generator. The throttle signal generates a motor control signal for controlling the rotation speed of the motor to obtain a flying speed or a flying attitude required by the unmanned aerial vehicle 10.

FIG. 2 is a cross-sectional view of the fuselage 100 of the unmanned aerial vehicle 10 shown in FIG. 1. The fuselage 100 is provided with a control circuit assembly composed of electronic components such as circuit boards 400a, 400b, and the control circuit assembly includes a plurality of control modules, for example, for controlling the operation of the power assembly to control the unmanned A flight control module for the flying attitude of the aircraft 10, a positioning module for navigation of the unmanned aerial vehicle 10, and a data processing module for processing environmental information acquired by relevant airborne equipment. The fuselage 100 is also provided with a heat dissipation structure 500 for dissipating heat from the circuit boards 400a and 400b. In a preferred embodiment, the plane where the fuselage 100 of the UAV 10 is located is parallel to the plane where the heat dissipation structure 500 is located. In the embodiment of the present invention, the number of the circuit boards is two, that is, the circuit boards 400 a and 400 b are respectively installed at the upper and lower ends of the heat dissipation structure 500. In other embodiments, the UAV 10 may be provided with more circuit boards or only one circuit board.

As shown in FIGS. 3 and 4, they are a front view and a perspective view of the heat dissipation structure 500 in the unmanned aerial vehicle 10 of FIG. 2, respectively. The heat dissipation structure 500 includes a casing 505, a cooling fan 506 disposed in the casing 505, and a first air inlet 501, a second air inlet 502, a first air outlet 503, and a second air outlet 504. In the embodiment of the present invention, the first air inlet 501 and the second air inlet 502 are oppositely disposed on the upper and lower sides of the housing 505, and the first air outlet 503 and the second air outlet 504 are opposite to each other. The left and right sides of the casing 505 are provided. After the heat dissipation structure 500 is installed on the fuselage 100 of the UAV 10, the first air inlet 501 and the second air inlet 502 face the upper and lower sides of the fuselage, respectively, and the first air outlet 503 and the second air outlet 504 faces the left and right sides of the fuselage 100, respectively.

The housing 505 is a flat rectangular parallelepiped, which includes a bottom wall 505b, a top wall 505a parallel to the bottom wall 505b, and four side walls connecting the bottom wall and the top wall, wherein a left wall and a right side The walls are shown in the figure as 505a and 505d, and the front and rear side walls are not shown in the figure. The bottom wall 505b, the top wall 505a, and the four side walls surround a receiving cavity, and the heat dissipation fan 506 is received in the receiving cavity. The heat dissipating fan 506 is substantially in a flat cylindrical shape, and the plane A where the heat dissipating fan 506 is located is shown by a dotted line in the figure. The plane A where the cooling fan 506 is located is parallel to the bottom wall 505b and the top wall 505a.

In some embodiments of the present invention, the first air inlet 501 and the second air inlet 502 are respectively disposed on the top wall 505a and the bottom wall 505b of the housing 505. As shown by the arrows in FIG. 3, the air inlet direction of the first air inlet 501 and the second air inlet 502 is perpendicular to the plane A where the cooling fan 506 is located. Specifically, the air inlet direction of the first air inlet 501 and the air inlet direction of the second air inlet 502 are opposite to each other, and both point toward the cooling fan 506.

In some embodiments of the present invention, the first air outlet 503 and the second air outlet 504 are respectively disposed on two opposite side walls of the housing 505, that is, the left side wall 505c and the right side Wall 505d. As shown by the arrows in FIG. 3, the air outlet directions of the first air outlet 503 and the second air outlet 504 are coplanar with the plane on which the heat dissipation fan 506 is located. Specifically, the air outlet direction of the first air outlet 503 and the air outlet direction of the second air outlet 504 are opposite to each other, and both face away from the cooling fan 506.

Further referring to FIG. 4, in some embodiments of the present invention, the sizes of the first air inlet 501 and the second air inlet 502 (not shown) are equal, and both are smaller than the cross-sectional area of the cooling fan 506. . The first air outlet (not shown) and the second air outlet 504 have the same size and are smaller than the longitudinal cross-sectional area of the heat dissipation fan 506. Specifically, in some embodiments of the present invention, the first air inlet 501 and the second air inlet 502 are circular, and the circular diameter is smaller than the two circular shapes of the cylindrical cooling fan 506. The diameter of the end face. In some embodiments of the present invention, the first air outlet 503 and the second air outlet 504 are rectangular, and the length of the rectangle is smaller than the diameters of the two circular end faces of the cooling fan, and the width of the rectangle Less than the height of the cooling fan.

The cooling fan 506 includes a hub 506a and a plurality of blades 506b evenly surrounding the hub 506a. An air inlet region is formed between the plurality of blades 506b. When the cooling fan 506 is operating, due to the rotation of the cooling fan 506, airflow enters the air inlet area of the cooling fan 506 through the first air inlet 501 and the second air inlet 502, and passes through the air The air inlet area forms a first branch flow and a second branch flow, the first branch flow is blown out through the first air outlet 503, and the second branch flow is blown out through the second air outlet.

The heat dissipation structure 500 provided by the embodiment of the present invention has a first air inlet 501 and a second air inlet 502 opposite to each other, and a first air outlet 503 and a second air outlet 504 opposite to each other. The structure is simple, and High heat dissipation efficiency. Further, applying the heat dissipation structure 500 to the unmanned aerial vehicle 10 can correspondingly improve the heat dissipation performance of the unmanned aerial vehicle 10. At the same time, because the structure of the heat dissipation structure 500 is simple, it can save heat dissipation space and control the unmanned aerial vehicle 10 At the same time, the overall weight is maximized to improve the heat dissipation performance, so that the UAV 10 has higher safety and reliability.

In some embodiments of the present invention, the first air inlet 501, the second air inlet 502, the first air outlet 503, and the second air outlet 504 are all communicated. When the unmanned aerial vehicle 10 is flying, part of the airflow flowing through the fuselage 100 of the unmanned aerial vehicle 10 does not have to go around the fuselage 100 any more, but can pass directly from one side of the fuselage 100 through the heat dissipation structure 500 Flow to the other side of the fuselage 100. Such a design can effectively reduce the wind resistance when the UAV 10 is flying.

Further, referring to FIG. 2 again, the fuselage 100 of the unmanned aerial vehicle 10 is provided with a first air inlet opening 101 on an upper side thereof corresponding to the first air inlet 501, and on a lower side thereof with the first air inlet 101 A second air inlet opening 101 is provided at a position corresponding to the two air inlets 502. The first circuit board 400a is installed between the first air inlet opening 101 and the heat dissipation structure 500, and the second circuit board 400b is installed between the second air inlet opening 102 and the heat dissipation structure. Between 500. The first air inlet opening 101 and the second air inlet opening 101 are provided, so that the air flow in the external environment of the fuselage 100 can flow through the first air inlet opening 101 and the second air inlet opening 102 through the first part of the heat dissipation structure 500, respectively. An air inlet 501 and a second air inlet 502 enter the inside of the heat dissipation structure 500. At the same time, since the first circuit board 400a is installed between the first air inlet opening 101 and the heat dissipation structure 500, when the airflow outside the fuselage 100 enters the inside of the fuselage 100 through the first air inlet opening 101 In this case, the first circuit board 400a is first passed to take away the heat on the first circuit board 400a, and then flows through the first air inlet 501 of the heat dissipation structure 500 and enters the inside of the heat dissipation structure 500 for ventilation. Such an arrangement can effectively remove As much heat as possible is removed from the first circuit board 400a for heat dissipation; similarly, since the second circuit board 400b is installed between the second air inlet opening 102 and the heat dissipation structure 500, when the body 100 When external airflow enters the body 100 through the second air inlet opening 102, it first passes through the second circuit board 400b, takes away the heat on the second circuit board 400b, and then flows through the second air inlet of the heat dissipation structure 500. 502, enter the heat dissipation structure 500 for ventilation. Such an arrangement can effectively remove as much heat as possible from the second circuit board 400b for heat dissipation.

The airframe 100 is also provided with a first air outlet 103 at a position corresponding to the first air outlet 503 on the left side, and a second air outlet is provided at a position corresponding to the second air inlet 504 on the right side thereof. Wind opening 104. The first air outlet opening 103 and the second air outlet opening 104 are provided so as to flow through the first air inlet 501 and the second air inlet 502 of the heat dissipation structure 500 and enter the airflow inside the heat dissipation structure 500. After the first air outlet 503 and the second air outlet 504, the first air outlet opening 103 and the second air outlet opening 104 provided on the fuselage 100 are blown out of the fuselage 100 respectively, thereby achieving the purpose of heat dissipation.

In order to further improve the heat dissipation effect of the heat dissipation structure 500, in some embodiments of the present invention, as shown in FIG. 2, a wind guide member 600 is further provided in the fuselage 100, and one end of the wind guide member 600 is connected to the machine. The inner wall of the body 100 is connected, and the other end is connected to the first air inlet 501. It should be understood that in the embodiment of the present invention, only the air guide member 600 connected to the first air inlet 501 is provided. In other embodiments, only the air guide member connected to the second air inlet 502 may be provided, or Two sets of air guiding components may be provided, which are respectively connected to the first air inlet 501 and the second air inlet 502. The arrangement of the wind guide member 600 makes it easier and more concentrated for the airflow outside the fuselage 100 to flow into the heat dissipation structure 500, which can further enhance the heat dissipation performance of the heat dissipation structure 500.

In some embodiments of the present invention, the heat dissipation structure 500 may be provided with a vibration damping member 700 on the outer periphery of the heat dissipation structure 500 to absorb vibration generated when the heat dissipation fan 506 of the heat dissipation structure 500 rotates, thereby reducing the heat dissipation fan. The impact of the vibration of 506 on other electronic components in the UAV 10, for example, particularly reduces the impact on the inertial sensing device (IMU).

Please refer to FIG. 5-a to FIG. 5-c, which respectively show the direction of the airflow flowing through the fuselage 100 when the unmanned aerial vehicle 10 is flying forward / backward, flying to the right, or to the left. As shown in FIG. 5-a, when the unmanned aerial vehicle 10 is flying forward or backward, that is, when flying in a direction perpendicular to the paper surface, the air flow in the external environment of the fuselage 100 is from the upper side of the fuselage 100, respectively. The side and the lower side flow into the inside of the fuselage 100, and after flowing through the heat dissipation structure 500, they flow out from the left and right sides of the fuselage 100; as shown in Fig. 5-b, when the unmanned aerial vehicle 10 flies to the right direction That is, when flying in the right direction in the figure, the air flow in the external environment of the fuselage 100 still flows into the fuselage 100 from the upper side and the lower side of the fuselage 100, but after passing through the heat dissipation structure 500, It no longer flows from the left and right sides of the fuselage 100, but from the left side of the fuselage 100; as shown in Figure 5-c, when the unmanned aerial vehicle 10 flies to the left, When flying in the left direction in the figure, the air flow in the external environment of the fuselage 100 still flows into the fuselage 100 from the upper and lower sides of the fuselage 100, but after passing through the heat dissipation structure 500, The right side of the fuselage 100 flows out. Therefore, the

first air outlets

503 and 504 provided on the left and right sides of the heat dissipation structure 500 and the first and second

air outlet openings

103 and 103 corresponding to the left and right sides of the fuselage 100 are not only It can dissipate heat and reduce wind resistance during flight of the UAV 10, because the airflow flowing through the external environment of the UAV 10 does not have to be all around the periphery of the fuselage 100, but a part of the airflow Can flow through the inside of the fuselage, that is,

When the unmanned aerial vehicle 10 flies in the right direction, a part of the airflow flowing through the external environment of the unmanned aerial vehicle 10 may sequentially flow through the second air outlet opening 104 on the right side of the fuselage 100 and the heat dissipation structure 500 The second air outlet 504 on the right wall 505d, the first air outlet 503 on the left wall 505c of the heat dissipation structure 500, and the first air outlet 103 on the left side of the fuselage 100 finally leave the unmanned aerial vehicle 10, thereby reducing the Wind resistance when the UAV 10 is flying; similarly, when the UAV 10 is flying to the left of the UAV 10, a part of the air current flowing through the external environment of the UAV 10 may sequentially flow through the left side of the fuselage 100 The first air outlet opening 103, the first air outlet 503 on the left side wall 505c of the heat dissipation structure 500, the second air outlet 504 on the right side wall 505d of the heat dissipation structure 500, and the second air outlet 104 on the right side of the fuselage 100. Leaving the unmanned aerial vehicle 10 reduces the wind resistance when the unmanned aerial vehicle 10 is flying.

The heat dissipation structure provided by the embodiment of the present utility model has a first air inlet and a second air inlet opposite to each other, and a first air outlet and a second air outlet opposite to each other. The structure is simple and has high heat dissipation efficiency. Further, the application of the heat dissipation structure to an unmanned aerial vehicle can correspondingly improve the heat dissipation performance of the unmanned aerial vehicle. At the same time, the simple structure of the heat dissipation structure can save heat dissipation space and maximize the weight of the unmanned aerial vehicle while controlling the overall weight of the unmanned aerial vehicle. The heat dissipation performance is improved to the limit, so that the UAV has higher safety and reliability.

The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the utility model should be included in Within the protection scope of the utility model.

Finally, it should be noted that the above embodiments are only used to explain the technical solution of the utility model, but not limited thereto; under the idea of the utility model, the technical features in the above embodiments or different embodiments can also be Combining, the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above, for the sake of brevity, they are not provided in the details; although the present invention is described in detail with reference to the foregoing embodiments Those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or equivalently replace some of the technical features; and these modifications or replacements do not make the nature of the corresponding technical solutions. Depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

A heat dissipation structure (500), comprising:

Housing (505);

A cooling fan (506) disposed in the casing (505); and

The first air inlet (501) and the second air inlet (502) oppositely disposed, and the first air outlet (503) and the second air outlet (504) oppositely disposed, wherein the first air inlet (501) And the air inlet direction of the second air inlet (502) is perpendicular to the plane where the cooling fan (506) is located, and the air outlet directions of the first air outlet (503) and the second air outlet (504) Coplanar with the plane on which the cooling fan (506) is located.
The heat dissipation structure (500) according to claim 1, wherein the first air inlet (501), the second air inlet (502), the first air outlet (503), and the first air inlet Both air outlets (504) are connected.
The heat dissipation structure (500) according to claim 1, wherein the housing (505) comprises a bottom wall (505b), a top wall (505a) parallel to the bottom wall (505b), and connecting the Four side walls of the bottom wall (505b) and the top wall (505a), the bottom wall (505b), the top wall (505a), and the four side walls are surrounded to form a receiving cavity, and the cooling fan (506) ) Is contained in the containing cavity.
The heat dissipation structure (500) according to claim 3, wherein a plane on which the heat dissipation fan (506) is located is parallel to the bottom wall (505b), and the first air inlet (501) and the first air inlet (501) Two air inlets (502) are respectively disposed on the top wall (505a) and the bottom wall (505b). The air inlet direction of the first air inlet (501) is the same as that of the second air inlet (502). The air inlet direction is opposite and both point to the cooling fan (506); the first air outlet (503) and the second air outlet (504) are respectively disposed on the four sides of the casing (505) On two opposite side walls of the wall, the direction of the air outlet of the first air outlet (503) is opposite to the direction of the air outlet of the second air outlet (504) and both face away from the cooling fan.
The heat dissipation structure (500) according to any one of claims 1 to 4, wherein the heat dissipation fan (506) comprises: a hub (506a), and a ring uniformly arranged on the hub (506a). A plurality of blades (506b); an air inlet region is formed between the plurality of blades (506b); wherein, when the cooling fan (506) is operated, air flows through the first air inlet (501) and the first air inlet (501) Two air inlets (502) enter the air inlet area of the cooling fan (506) and form a first branch flow and a second branch flow through the air inlet area; the first branch flow and the second branch flow The branch flows are blown out through the first air outlet (503) and the second air outlet (504), respectively.
The heat dissipation structure (500) according to claim 1, wherein the heat dissipation fan (506) is cylindrical, and the size of the first air inlet (501) and the second air inlet (502) are equal. And both are smaller than the cross-sectional area of the cooling fan (506), and the sizes of the first air outlet (503) and the second air outlet (504) are equal and smaller than the longitudinal cross section of the cooling fan (506) area.
The heat dissipation structure (500) according to claim 6, characterized in that the first air inlet (501) and the second air inlet (502) are circular, and the diameter of the circle is smaller than the cooling fan (506) The diameter of the two circular end faces.
The heat dissipation structure (500) according to claim 6 or 7, characterized in that the first air outlet (503) and the second air outlet (504) are rectangular, and the length of the rectangle is shorter than the heat radiation The diameter of two circular end faces of the fan (506), and the width of the rectangle is smaller than the height of the heat dissipation fan (506).
An unmanned aerial vehicle (10) includes a fuselage (100), an arm (200) connected to the fuselage (100), and a power unit provided on the arm (200), characterized in that: A heat dissipation structure (500) according to any one of claims 1 to 8 is installed in the body (100).
The unmanned aerial vehicle (10) according to claim 9, characterized in that the plane where the fuselage (100) of the unmanned aerial vehicle (10) is located is parallel to the plane (A) where the heat dissipation structure (500) is located .
The unmanned aerial vehicle (10) according to claim 9, characterized in that the fuselage (100) is provided at the upper side thereof with a position corresponding to the first air inlet (501) with a first air inlet opening ( 101), a second air inlet opening (102) is provided at a position corresponding to the second air inlet (502) on a lower side thereof.
The unmanned aerial vehicle (10) according to claim 11, wherein a first circuit board (400a) and / or a second circuit board (400b) are further installed in the fuselage (100), and the first A circuit board (400a) is disposed between the first air inlet opening (101) and the heat dissipation structure (500), and / or the second circuit board (400b) is disposed between the second air inlet Between the opening (102) and the heat dissipation structure (500).
The unmanned aerial vehicle (100) according to claim 9, characterized in that the first air outlet (503) and the second air outlet (504) respectively face both sides of the fuselage.
The unmanned aerial vehicle (10) according to any one of claims 9 to 13, characterized in that the fuselage (100) is provided at a position on the left side thereof corresponding to the first air outlet (503) The first air outlet opening (103) is provided with a second air outlet opening (104) at a position on the right side thereof corresponding to the second air outlet (504).
The unmanned aerial vehicle (10) according to claim 14, characterized in that the fuselage (100) is further provided with a wind guide member (600), one end of the wind guide member (600) and the fuselage (100) is connected, and the other end is connected to the first air inlet (501) and / or the second air inlet (502).
The unmanned aerial vehicle (10) according to claim 14, wherein a vibration damping member (700) is further provided on an outer periphery of the heat dissipation structure (500).