Motor assembly for ducted fan

Abstract

The utility model discloses a motor assembly used for a ducted fan, and aims to provide a motor assembly used for a ducted fan, which is favorable for improving the lifting tension, and comprises a motor seat and an annular outer cover, the motor seat is positioned in the outer cover and at the center of the bottom of the outer cover, and a motor and a plurality of guide vanes are arranged on the motor seat. One end of the motor is detachably connected with the motor base, the other end of the motor is an output end and is provided with a fan, the fan is located in the top of the outer cover and is detachably connected with the output end of the motor, the cross section of each guide vane arches from one side to the other corresponding side to form a crescent structure, and the multiple guide vanes are evenly distributed in the circumferential direction of the motor base. The motor base is detachably connected with the inner side wall of the outer cover through the guide vane. The utility model has the beneficial effect that the purpose of improving the lifting tension of the aircraft is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the motor related technical field of ducted fan, especially point to a motor assembly for ducted fan. BACKGROUND

[0002] The ducted fan is a commonly used power propulsion system of the aircraft, which is widely applied to the model aircraft, unmanned aerial vehicle and part manned aircraft, and can provide corresponding thrust / lift for the aircraft.

[0003] The ducted fan power system drives the high-power brushless motor by lithium power supply or direct current power supply, and the brushless motor drives the fan to rotate at high speed. The fan inhales air and does work on it, so that the total pressure of the airflow is increased and the speed is increased. After the air enters the stator, the linear speed of the airflow is cut off. The airflow is discharged at high speed from the tail to obtain thrust. The ducted fan power system has the characteristics of high efficiency, large thrust-to-weight ratio and low cost, and has been widely applied to the field of unmanned aerial vehicle and helicopter as a power system, which has an important influence on the performance of the aircraft.

[0004] The existing brushless motor ducted fan has the problems of large air resistance in the flight process of the aircraft, which is not conducive to noise reduction and limits the lifting force improvement range, and the overall structure is complex, so that the volume of the whole duct is large, which is not conducive to weight reduction, thereby limiting the lifting force improvement range. UTILITY MODEL CONTENTS

[0005] The utility model discloses in order to overcome the insufficient of the aircraft lifting force improvement range in the prior art, provide a motor assembly for ducted fan that is beneficial to the improvement of lifting force.

[0006] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A motor assembly for ducted fan, it includes motor seat and circular ring's outer cover, the motor seat is located in the outer cover and is located the bottom center of the outer cover, be equipped with motor and several pieces of guide blade on the motor seat, the one end of motor is detachably connected with the motor seat, the other end of motor is output end and is equipped with fan, the fan is located in the top of the outer cover and is detachably connected with the output end of motor, the cross section of guide blade is by its one side to its corresponding other side arch and form crescent structure, several pieces of guide blade are evenly distributed along the circumference of the motor seat, the motor seat is detachably connected through the guide blade with the inner side wall of the outer cover.

[0008] The motor seat is located in the outer cover and at the bottom center of the outer cover, the motor seat is provided with a motor and a plurality of guide vanes, one end of the motor is detachably connected with the motor seat, the other end of the motor is an output end and is provided with a fan, the fan is located in the top of the outer cover and is detachably connected with the output end of the motor, the cross section of the guide vane is in a crescent shape formed by arching from one side to the corresponding other side, the plurality of guide vanes are uniformly distributed along the circumference of the motor seat, and the motor seat is detachably connected with the inner side wall of the outer cover through the guide vanes. The fan as a rotating component provides the lift of the ducted fan, and the guide vanes guide the flow to improve the aerodynamic efficiency of the ducted fan and reduce unnecessary kinetic energy loss, and the guide vanes also have the function of the fan support structure; the selection of a large number of guide vanes mainly considers improving the overall stiffness of the ducted fan to ensure the coaxiality and blade tip clearance between the duct body and the fan; the uniform distribution of the guide vanes along the circumference of the motor seat ensures the smallest gap between the fan and the guide vanes, improves the aerodynamic efficiency, and reduces the overall axial length of the entire duct, thereby facilitating the reduction of volume and weight, and because the cross section of the guide vane is in a crescent shape, the air resistance is reduced, the noise is reduced, and the purpose of improving the lifting force of the aircraft is achieved.

[0009] As preferred, the shape of the motor seat is circular, the motor is detachably mounted on the end plane of the motor seat, the two ends of the guide vane are respectively fixedly connected with flange piece one and flange piece two, one end of the guide vane is detachably fixedly connected with the outer circumferential surface of the motor seat after completely adhering to the outer circumferential surface of the motor seat through the flange piece one, the flange pieces one on the plurality of guide vanes collectively form a circular ring structure completely covering the outer circumferential surface of the motor seat, the inner side wall of the outer cover is provided with a plurality of installation grooves matched with the flange piece two, the other end of the guide vane is detachably connected with the inner side wall of the outer cover after being embedded in the corresponding installation groove through the flange piece two, and the flange piece two and the inner side wall of the outer cover are on the same arc surface. The connection position and structure design of the motor and the guide vane with the motor seat ensure the smallest gap between the fan and the guide vane, improve the aerodynamic efficiency, and reduce the overall axial length of the entire duct and the weight; the structure design and matching mode of the flange piece one and the flange piece two facilitate the installation and disassembly of the motor seat through the guide vanes, and facilitate the reduction of air resistance and noise.

[0010] As preferred, the guide vane is in a solid structure. It is beneficial to improve the support strength.

[0011] As another preferred, the motor is located at one end of the motor base, the other end of the motor base is provided with a recess, the guide vane is provided with a water channel, the side wall of the recess is provided with a water hole one in communication with one end of the water channel, the outer cover is provided with a water hole two in communication with the other end of the water channel. The guide vanes are grouped in pairs to form a water cooling circuit, the utility model integrates the cooling system and the guide vanes, utilizes the guide vanes to take away the heat generated by the motor through the cooling water, is favorable for the motor heat dissipation and facilitates the reduction of the system weight of the aircraft, further reduces the size of the ducted fan; the ducted fan can select four guide vanes for cooling, and the remaining guide vanes can be solid or hollow.

[0012] As preferred, the motor comprises a shell and a rotor mounting shell, the shell is provided with a stator, one end of the stator is detachably connected with the motor base, the rotor mounting shell is located at the other end of the stator, the center of the stator is provided with a rotating shaft, one end of the rotating shaft is rotatably connected with the stator, the other end of the rotating shaft is detachably fixedly connected with the center of the rotor mounting shell, one side edge of the rotor mounting shell is detachably fixedly connected with the shell, and the fan is detachably mounted on the other side corresponding to the rotor mounting shell.

[0013] As preferred, the rotor mounting shell comprises a circular shell and a circular rotor body, the rotor body is located in the shell, the center of the rotor body is fixedly connected with the rotating shaft, the circumferential surface of the rotor body is provided with a plurality of guide vanes uniformly distributed along the circumferential direction, the rotor body is fixedly connected with the inner side wall of the shell through the guide vanes, one side of the rotor body is close to the stator, the other side corresponding to the rotor body is away from the stator, the fan is detachably mounted on the side of the rotor body away from the stator and located outside the shell, one end of the shell is detachably fixedly connected with the shell, and the guide vanes are located in the other end of the shell. The design of the guide vanes is convenient for the flow guiding of the gas, thereby being favorable for the heat dissipation of the motor and prolonging the service life of the motor.

[0014] The utility model has the advantages that: the guide vanes are used for flow guiding and improving the aerodynamic efficiency of the ducted fan, reducing unnecessary kinetic energy loss, and the guide vanes also have the function of the fan supporting structure; the guide vanes are selected in a large number mainly to improve the overall stiffness of the ducted fan, ensure the coaxiality between the duct body and the guide vanes and the blade tip clearance; the purpose of improving the ascending pull of the aircraft is achieved; the clearance between the fan and the guide vanes is as small as possible, the aerodynamic efficiency is improved, the overall axial length of the duct is reduced, and the weight is reduced; air resistance is reduced, and noise is reduced; the guide vanes are solid structures, which are favorable for improving the supporting strength; the guide vanes are grouped in pairs to form a water cooling circuit, the utility model integrates the cooling system and the guide vanes, utilizes the guide vanes to take away the heat generated by the motor through the cooling water, is favorable for the motor heat dissipation and facilitates the reduction of the system weight of the aircraft. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the present application;

[0016] Figure 2 is a front view of the present application;

[0017] Figure 3 is Figure 2 is a sectional view of B-B in the figure;

[0018] Figure 4 is Figure 3 is an enlarged view of structure at A in the figure;

[0019] Figure 5 is Figure 3 is an enlarged view of structure at C in the figure.

[0020] In the figure: 1. motor base, 2. cover, 3. motor, 4. guide vane, 5. fan, 6. flange sheet one, 7. flange sheet two, 8. installation groove, 9. recess, 10. water channel, 11. water hole one, 12. water hole two, 13. shell, 14. rotor installation shell, 15. stator, 16. rotating shaft, 17. casing, 18. rotor body, 19. guide vane. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The description of the at least one exemplary embodiment is actually only illustrative, but not intended to limit the present application and its application or use in any way. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0022] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0023] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of components illustrated in these embodiments do not limit the scope of this application. For ease of illustration, spatial relative terms such as “upper,” “lower,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “below” other elements or features would be fixed “upper” to other elements or features. Thus, the exemplary term “lower” can include both upper and lower orientations. The device may be fixed in other ways (rotated 90 degrees or located in other orientations), and the spatial relative descriptions used herein can be interpreted accordingly. It should also be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale. Techniques, processes, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, processes, and equipment should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be discussed further in subsequent figures.

[0024] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0025] like Figure 1 and Figure 2 In the embodiments described, a motor assembly for a ducted fan includes a motor base 1 and an annular outer casing 2. The motor base 1 is located inside the outer casing 2 and at the bottom center of the outer casing 2. The motor base 1 is provided with a motor 3 and several guide vanes 4. One end of the motor 3 is detachably connected to the motor base 1, and the other end of the motor 3 is an output end and is provided with a fan 5. The fan 5 is located inside the top of the outer casing 2 and is detachably connected to the output end of the motor 3. The cross-section of the guide vanes 4 arches from one side to the corresponding other side to form a crescent shape. Several guide vanes 4 are evenly distributed along the circumference of the motor base 1. The motor base 1 is detachably connected to the inner wall of the outer casing 2 through the guide vanes 4.

[0026] like Figure 1 , Figure 4 and Figure 5As shown, the motor base 1 is circular in shape. The motor 3 is detachably mounted on the end plane of the motor base 1. The two ends of the guide vane 4 are respectively fixedly connected to flange plate 1 6 and flange plate 2 7. One end of the guide vane 4 is detachably fixed after being completely fitted with the outer circumferential surface of the motor base 1 through flange plate 1 6. The flange plates 1 6 on several guide vanes 4 together form a ring structure that completely covers the outer circumferential surface of the motor base 1. The inner side wall of the outer cover 2 is provided with several mounting grooves 8 that match flange plate 2 7. The other end of the guide vane 4 is detachably connected to the inner side wall of the outer cover 2 after being embedded in the corresponding mounting groove 8 through flange plate 2 7. Flange plate 2 7 and the inner side wall of the outer cover 2 are on the same arc surface.

[0027] Guide vane 4 is a solid structure.

[0028] The motor 3 is located at one end of the motor base 1. The other end of the motor base 1 is provided with a groove 9. The guide vane 4 is provided with a water channel 10. The side wall of the groove 9 is provided with a water hole 11 that is connected to one end of the water channel 10. The outer cover 2 is provided with a water hole 12 that is connected to the other end of the water channel 10.

[0029] like Figure 3 As shown, the motor 3 includes a housing 13 and a rotor mounting housing 14. The housing 13 contains a stator 15. One end of the stator 15 is detachably connected to the motor base 1. The rotor mounting housing 14 is located at the other end of the stator 15. A rotating shaft 16 is located at the center of the stator 15. One end of the rotating shaft 16 is rotatably connected to the stator 15. The other end of the rotating shaft 16 is detachably and fixedly connected to the center of the rotor mounting housing 14. One side edge of the rotor mounting housing 14 is detachably and fixedly connected to the housing 13. The fan 5 is detachably mounted on the corresponding side of the rotor mounting housing 14.

[0030] The rotor mounting housing 14 includes an annular housing 17 and a circular rotor body 18. The rotor body 18 is located inside the housing 17. The center of the rotor body 18 is fixedly connected to the rotating shaft 16. Several guide vanes 19 are evenly distributed along the circumference of the rotor body 18. The rotor body 18 is fixedly connected to the inner wall of the housing 17 through the guide vanes 19. One side of the rotor body is close to the stator 15, and the corresponding other side of the rotor body 18 is away from the stator 15. The fan 5 is detachably installed on the side of the rotor body 18 away from the stator 15 and located outside the housing 17. One end of the housing 17 is detachably fixedly connected to the outer casing 13, and the guide vanes 19 are located inside the other end of the housing 17.

[0031] In the utility model, the support structure of the ducted fan is composed of 11 guide vanes 4, the fan 5 provides the lift of the ducted fan as a rotating component, the guide vanes 4 are used for guiding flow to improve the aerodynamic efficiency of the ducted fan and reduce unnecessary kinetic energy loss, and the guide vanes 4 also have the function of the support structure of the fan 5; the number of the guide vanes 4 is mainly selected to improve the overall stiffness of the ducted fan and ensure the coaxiality and gap between the ducted body and the fan 5.

[0032] According to actual requirements, in order to improve the support strength, the guide vanes 4 can adopt a solid structure. If the motor 3 needs to be water-cooled, the guide vanes 4 can be grouped in pairs to form a water-cooling loop, the utility model integrates the cooling system with the guide vanes 4, uses the guide vanes 4 to take away the heat generated by the motor 3 through cooling water, is beneficial to heat dissipation of the motor 3 and is convenient for reducing the system weight of the aircraft, further reduces the size of the ducted fan; the ducted fan can also select 4 guide vanes 4 for cooling, and the remaining guide vanes 4 can be solid or hollow.

[0033] The above embodiments are only used to illustrate the technical scheme of the utility model, rather than limit it; although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical scheme recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the spirit and scope of the technical scheme of the utility model embodiments.

Claims

1. A motor assembly for a ducted fan, characterized in that, Includes a motor base (1) and an annular outer cover (2). The motor base (1) is located inside the outer cover (2) and at the bottom center of the outer cover (2). The motor base (1) is provided with a motor (3) and several guide vanes (4). One end of the motor (3) is detachably connected to the motor base (1). The other end of the motor (3) is the output end and is provided with a fan (5). The fan (5) is located inside the top of the outer cover (2) and is detachably connected to the output end of the motor (3). The cross-section of the guide vane (4) arches from one side to the corresponding other side to form a crescent shape. Several guide vanes (4) are evenly distributed along the circumference of the motor base (1). The motor base (1) is detachably connected to the inner wall of the outer cover (2) through the guide vanes (4).

2. The motor assembly for a ducted fan according to claim 1, characterized in that, The motor base (1) is circular in shape. The motor (3) is detachably installed on the end plane of the motor base (1). The two ends of the guide vane (4) are respectively fixedly connected with flange plate one (6) and flange plate two (7). One end of the guide vane (4) is detachably fixed after being completely fitted with the outer circumferential surface of the motor base (1) through flange plate one (6). The flange plates one (6) on several guide vanes (4) together form a circular structure that completely covers the outer circumferential surface of the motor base (1). The inner side wall of the outer cover (2) is provided with several mounting grooves (8) that match flange plate two (7). The other end of the guide vane (4) is detachably connected to the inner side wall of the outer cover (2) after being embedded in the corresponding mounting groove (8) through flange plate two (7). The flange plate two (7) and the inner side wall of the outer cover (2) are on the same arc surface.

3. A motor assembly for a ducted fan according to claim 1 or 2, characterized in that, The guide vane (4) is a solid structure.

4. A motor assembly for a ducted fan according to claim 1 or 2, characterized in that, The motor (3) is located at one end of the motor base (1), and the other end of the motor base (1) is provided with a groove (9). The guide vane (4) is provided with a water channel (10). The side wall of the groove (9) is provided with a water hole one (11) that is connected to one end of the water channel (10). The outer cover (2) is provided with a water hole two (12) that is connected to the other end of the water channel (10).

5. A motor assembly for a ducted fan according to claim 1 or 2, characterized in that, The motor (3) includes a housing (13) and a rotor mounting housing (14). The housing (13) contains a stator (15). One end of the stator (15) is detachably connected to the motor base (1). The rotor mounting housing (14) is located at the other end of the stator (15). The center of the stator (15) is provided with a rotating shaft (16). One end of the rotating shaft (16) is rotatably connected to the stator (15). The other end of the rotating shaft (16) is detachably fixedly connected to the center of the rotor mounting housing (14). One side edge of the rotor mounting housing (14) is detachably fixedly connected to the housing (13). The fan (5) is detachably mounted on the other side of the rotor mounting housing (14).

6. A motor assembly for a ducted fan according to claim 5, characterized in that, The rotor mounting housing (14) includes an annular housing (17) and a circular rotor body (18). The rotor body (18) is located inside the housing (17). The center of the rotor body (18) is fixedly connected to the rotating shaft (16). Several guide vanes (19) are evenly distributed along its circumference on the circumferential surface of the rotor body (18). The rotor body (18) is fixedly connected to the inner wall of the housing (17) through the guide vanes (19). One side of the rotor body is close to the stator (15), and the other side of the rotor body (18) is away from the stator (15). The fan (5) is detachably installed on the side of the rotor body (18) away from the stator (15) and located outside the housing (17). One end of the housing (17) is detachably fixedly connected to the outer shell (13), and the guide vanes (19) are located inside the other end of the housing (17).

Images