Electric ducted power fan device and aircraft

Abstract

The present invention discloses an electric ducted power fan device and an aircraft, belonging to the technical field of short-distance take-off and landing aircraft. The electric ducted power fan device and the aircraft include a support casing, a shell portion, and the shell portion defines a substantially cylindrical flow zone; a motor stator assembly, and the motor stator assembly is configured to generate a continuously changing magnetic field based on an external control system; a rotor support shaft assembly, including a rotor support shaft arranged along an axis O, and the rotor support shaft is installed on the support casing; and a fan rotor assembly. By providing a motor structure composed of a motor stator assembly and a part of a fan rotor assembly, the crown portion and the motor rotor in the fan rotor assembly are combined, and at the same time, the motor stator is located outside the blade crown and embedded in the fan casing as a whole, thereby improving space and mass utilization.

Description

Technical Field

[0001] The invention belongs to the technical field of short-distance take-off and landing aircraft, and in particular relates to an electric ducted power fan device and an aircraft. Background Art

[0002] At present, the main power technologies used for vertical take-off and landing aircraft include tilt-rotor technology, engine nozzle steering + mechanical fan technology, distributed electric propeller technology, etc. The potential power device used for small and medium-sized vertical take-off and landing aircraft is still distributed electric propeller / fan technology. Generally, the propeller is considered to be propeller without duct, and the fan is considered to be fan with duct. The principle diagram of the electric propeller / fan power device is as follows: Figure 1 As shown, it is mainly composed of a blade rotor, a supporting casing, a motor (stator assembly, rotor assembly, controller, etc.), a mounting structure, an external cable, etc., and the electric fan power device also has a duct;

[0003] Most of the motors in existing aircraft power plants use existing motor forms, which have low space and mass utilization and low power density. Summary of the invention

[0004] The object of the present invention is to provide an electric ducted power fan device and an aircraft to solve the problems of the existing power devices and aircraft during use raised in the above background technology.

[0005] To achieve the above object, the present invention provides, on one hand, an electric ducted power fan device, comprising a support casing, comprising a housing portion, wherein the housing portion defines a substantially cylindrical flow region;

[0006] a motor stator assembly disposed in the circulation zone and mounted on the support casing, the motor stator assembly being configured to generate a continuously changing magnetic field based on an external control system;

[0007] A rotor support shaft assembly, comprising a rotor support shaft arranged along an axis O, and the rotor support shaft is mounted on the support box;

[0008] A fan rotor assembly is mounted on the rotor support shaft and is configured to be able to rotate around an axis O. The fan rotor assembly includes a plurality of blades evenly arranged in a circumferential direction and a crown fixed to the radially outer side of the blades. The fan rotor assembly also includes a plurality of permanent magnet blocks fixed to the outer surface of the crown and evenly arranged in the circumferential direction.

[0009] Preferably, the supporting casing also includes a second surrounding portion which is roughly cylindrical and a first surrounding portion arranged radially outside the second surrounding portion, the first surrounding portion and the second surrounding portion are connected by a plurality of load-bearing support plates evenly arranged in the circumferential direction, and the rotor support shaft is installed by a first mounting structure on the second surrounding portion.

[0010] Preferably, the fan device further comprises an accessory bin fairing mounted on one axial end of the shell portion, and the accessory bin fairing, the first surrounding portion and the shell portion together form a second accommodating area that is connected to the communication area.

[0011] Preferably, the motor stator assembly comprises:

[0012] The core assembly has an outer wall portion that is substantially in the shape of an annular sheet and a plurality of T-shaped portions fixed to the inner surface of the outer wall portion;

[0013] The stator winding comprises a plurality of winding units wound on the T-shaped portion, and there is a spacing interval between adjacent winding units;

[0014] A cooling pipeline assembly, comprising a pipeline unit disposed in the interval, the pipeline unit having an inlet and an outlet;

[0015] The end plate is provided with a fluid groove on the other side of the pipeline unit, and a cable hole and a plurality of mounting holes are provided on the end plate.

[0016] Preferably, the fan rotor assembly further comprises a disc body portion located radially inwardly of the crown, and a first oil return section is formed between an inner wall of the disc body portion and an outer wall of the rotor support shaft.

[0017] Preferably, an oil inlet passage arranged along the axis O is formed in the rotor support shaft, and the oil inlet passage and the first oil return section are connected through a radial small hole opened on the rotor support shaft.

[0018] Preferably, the rotor support shaft includes a middle section and a first section and a second section extending axially outward from both ends of the middle section, the rotor support assembly also includes two bearings installed on the middle section, and a second mounting structure for mounting the bearings is formed on the disk body, and at least one of the two bearings is a ball bearing.

[0019] Preferably, the fan device further comprises a rotating shaft assembly, wherein the rotating shaft assembly comprises a first rotating shaft and a second rotating shaft which are installed on radial sides of the supporting casing and whose axes coincide with each other.

[0020] Preferably, the first rotating shaft includes a shaft column and a hollow cable channel, the second rotating shaft includes an outer shaft column and an inner shaft column, the inner shaft column is connected to the accessory compartment fairing, and the inner shaft column is hollow inside to form an oil injection channel, and a second oil return section is formed between the outer shaft column and the inner shaft column.

[0021] Another aspect of the present invention provides an aircraft, which has the above-mentioned fan device, and the fan device is configured to be rotatable and adjustable.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present application provides a motor structure composed of a motor stator assembly and a fan rotor assembly, combines the crown in the fan rotor assembly with the motor rotor, and the motor stator is located outside the blade crown and embedded in the fan casing as a whole, thereby improving space and mass utilization;

[0024] 2. This application provides an accessory compartment fairing, combined with the lubricating oil channels designed in the other components of the fan device, to achieve lubrication and cooling of components such as bearings and motor stators in the fan device, thereby increasing the life of the device;

[0025] 3. This application realizes the angular adjustment of the fan device on the aircraft by setting a rotating shaft assembly, which can generate vector thrust, thereby controlling and realizing various functions such as vertical ascent and descent, stable level flight, and complex maneuverable flight. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of a traditional propeller;

[0027] Figure 2 This is the overall system diagram of the fan device of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the casing assembly of the present invention;

[0029] Figure 4 The structure of the stator assembly of the motor of the present invention is shown in FIG. Figure 1 ;

[0030] Figure 5 The structure of the stator assembly of the motor of the present invention is shown in FIG. Figure 2 ;

[0031] Figure 6 The structure of the stator assembly of the motor of the present invention is shown in FIG. Figure 3 ;

[0032] Figure 7 It is a schematic structural diagram of a fan rotor assembly of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of the rotor support assembly of the present invention;

[0034] Fig. 9 It is a schematic diagram of the structure of the rotating shaft assembly of the present invention;

[0035] Fig.10 It is a schematic diagram of the overall structure of the aircraft of the present invention;

[0036] Fig.11 This is a schematic diagram of the structure of the aircraft in motion state of the present invention;

[0037] Fig.12 It is a schematic diagram of the structure of another motion state of the aircraft of the present invention.

[0038] 100, casing assembly; 101, casing support; 102, housing; 103, support; 104, first surrounding; 105, second surrounding; 106, motor fairing; 108, first accommodating interval; 109, accessory compartment fairing; 110, second accommodating interval; 111, load-bearing support plate; 112, first mounting structure; 113, motor anti-twist convex strip; 114, tail fairing cone;

[0039] 200, motor stator assembly; 201, stator winding; 202, winding unit; 203, core assembly; 203a, outer wall; 203b, T-shaped portion; 204, cooling pipeline assembly; 205, pipeline unit; 206, end plate; 207, first hole group; 208, second hole group; 209, hole unit group; 210, fluid tank; 211, total inlet; 212, total outlet; 213, cable hole;

[0040] 300, fan rotor assembly; 301, blade disk component; 301a, disk body; 301b, crown; 301c, blade portion; 302, permanent magnet block; 303, second mounting structure; 304, fan fairing

[0041] 400, rotor support assembly; 401, rotor support shaft; 401a, first section; 401b, middle section; 401c, second section; 402, bearing; 403, sealing structure; 404, compression nut; 405, sealing cover plate; 405a, oil inlet; 405b, oil return port;

[0042] 500, shaft assembly; 501, first shaft; 502, shaft column; 503, cable channel; 504, second shaft; 505, inner shaft column; 506, outer shaft column;

[0043] 600, oil injection channel; 601, oil inlet channel; 602, bearing chamber; 603, first oil return section; 604, oil return hole; 605, intermediate oil channel; 606, second oil return section. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Reference Figure 2 , an electric ducted power fan device, the main body of which is composed of a casing assembly 100, a motor assembly, a rotor support shaft 401 assembly and a fan assembly, wherein the casing assembly 100 is constituted as a mounting carrier for the remaining components, that is, the motor assembly, the rotor support shaft 401 assembly and the fan assembly are mounted based on the casing assembly 100;

[0046] Specifically, refer to Figure 3 The casing assembly 100 is mainly composed of a supporting casing 101, a motor fairing 106, an accessory compartment fairing and a tail fairing cone 114, wherein the supporting casing 101 is constituted as a mounting carrier for the motor fairing 106, the accessory compartment fairing and the tail fairing cone 114, Figure 3 The support casing 101 includes a shell 102 and a support portion 103, wherein the shell 102 is roughly a cylindrical component, and a roughly cylindrical flow area is formed therein. Specifically, the shell 102 is formed around the axis O with a roughly rectangular cross-section, and the shell 102 has an axial first end and a second end, wherein a mounting flange of a motor fairing 106 is formed on the first end of the shell 102, and the motor fairing 106 is assembled at the axial first end of the shell 102 through the mounting flange. At the same time, a roughly annular first accommodating area 108 is formed in the motor fairing 106, and the first accommodating area 108 is formed with an opening toward one end of the shell 102, back to Figure 3 , continue to explain the composition of the support casing 101, the support portion 103 of the support casing 101 is staggered with the shell portion 102 in the axial position, that is, at least a part of the support portion 103 is located outside the above-mentioned circulation interval, specifically, the support portion 103 includes a first surrounding portion 104 and a second surrounding portion 105 arranged at intervals in the radial direction, the first surrounding portion 104 and the second surrounding portion 105 are both approximately cylindrical parts, and the first surrounding portion 104 and the second surrounding portion 105 are connected by a plurality of load-bearing support plates 111, and a plurality of load-bearing support plates 111 are arranged at equal intervals in the circumferential direction. Exemplarily, the load-bearing support plates 111 are provided with three, and the adjacent load-bearing support plates 111 are arranged at an interval of 120°, and the angle between a single load-bearing support plate 111 and the axis O is an acute angle, that is, a single load-bearing support plate 111 is arranged deviating from the radial direction, refer to Figure 3A mounting edge is formed on the second end of the housing portion 102, and the accessory compartment fairing 109 is mounted through the mounting edge and the first surrounding portion 104 of the support portion 103, and the accessory compartment fairing 109 and the first surrounding portion 104 together form a substantially annular second accommodating interval 110, and the second accommodating interval 110 is formed with an opening at one end facing the housing portion 102, and the circulation interval and the second accommodating interval 110 are connected at the opening position;

[0047] Further, see Figure 3 An intermediate oil passage 605 is also formed on the load-bearing support plate 111 supporting the casing 101. The extension direction of the intermediate oil passage 605 is substantially the same as the extension direction of the load-bearing support plate 111, that is, the intermediate oil passage 605 is arranged along the load-bearing support plate 111 to form a fluid (such as lubricating oil) circulation channel between the second accommodating section 110 and the oil inlet 405a and the oil outlet 405b described later.

[0048] Reference Figure 3 The second surrounding portion 105 of the support portion 103 is formed with a mounting flange at one end axially away from the housing portion 102. Correspondingly, the tail straightening cone 114 is mounted on the second surrounding portion 105 through the mounting flange, and can rectify the flow field after the rotor support to reduce resistance. At the same time, a first mounting structure 112 is provided on the inner surface of the second surrounding portion 105 for realizing the installation of the rotor support shaft 401 described later;

[0049] Back to Figure 3 , the supporting casing 101 further includes a motor anti-twist convex strip 113 extending along the axis O and located radially inward of the housing portion 102;

[0050] Reference Figure 4-6 , is a schematic diagram of the structure of the motor stator assembly 200, the motor stator assembly 200 is arranged as a whole in the above-mentioned circulation interval and is installed by supporting the casing 101, the main body of the motor stator assembly 200 is composed of a stator winding 201, a core assembly 203 and a cooling pipe assembly 204, wherein the stator winding 201 is adjusted by an external control system to form a constantly changing magnetic field, the core assembly 203 can enhance the magnetic field effect and withstand the reaction force of the magnetic force, and the cooling pipe assembly 204 is configured to cool the stator winding 201, etc. Specifically, the core assembly 203 includes an outer wall portion 203a in the form of an annular sheet body and a plurality of T-shaped portions 203b with a "T"-shaped cross-section uniformly arranged on the inner surface of the outer wall portion 203a, wherein the outer wall portion 203a and the "T"-shaped portion 203b are integrally formed components, and more specifically, the T-shaped portion 203b includes a first portion extending in the radial direction and a second portion formed by extending from the inner side end of the first portion to both sides (refer to Figure 5), the stator winding 201 includes a plurality of winding units 202, a single winding unit 202 is wound on the outside of the first part, that is, the single winding unit 202 is formed into a rectangular ring unit, and the winding unit 202 is limited in the height direction (that is, the radial direction) by the second part, and there is a gap between adjacent winding units 202 in the circumferential direction, that is, a gap interval is formed on adjacent sides of adjacent winding units 202, and the cooling pipe assembly includes a pipeline unit 205 arranged in the gap interval , a single pipeline unit 205 is a "U"-shaped pipeline, and the above-mentioned cooling pipeline assembly also includes an end plate 206, which is arranged at one axial end of the core assembly 203 and is arranged close to the accessory compartment fairing 109. Specifically, the end plate 206 is an annular plate body, and a mounting hole group is opened on the end plate 206. Specifically, the mounting hole group 209 includes a first hole group 207 and a second hole group 208, wherein the first hole group 207 constitutes a connection structure between the end plate 206 and the supporting casing, that is, The end plate 206 is fixed to the supporting casing through the first hole group 207. Exemplarily, the mounting holes constituting the first hole group 207 are cylindrical through holes, and the second hole group 208 constitutes a plurality of mounting holes cooperating with the above-mentioned pipeline unit 205. Specifically, the above-mentioned second hole group 208 includes a plurality of hole unit groups 209 arranged at intervals in the circumferential direction, and a single hole unit group 209 includes two mounting holes arranged at intervals in the radial direction. The number of the above-mentioned hole unit groups 209 corresponds to the number of pipeline units, and the two ends of the pipeline unit are respectively connected to the two mounting holes of the single hole unit group 209. Further, the above-mentioned end plate 206 is provided with a fluid groove 210 on the end surface of the other side of the pipeline unit 205, and the two circumferentially spaced mounting holes in adjacent hole unit groups 209 are connected through the fluid groove 210, that is, the above-mentioned fluid groove 210 constitutes a connecting channel for the two pipeline units. Further, the two mounting holes in the above-mentioned mounting hole group are respectively constituted as a total inlet 211 and a total outlet 212 connected to the above-mentioned second accommodating interval. Figure 6 , the arrow in the figure exemplarily gives the flow direction of the lubricating oil. At this time, the outlet of the previous pipeline unit 205 is connected to the inlet of the next pipeline unit 205 (i.e., the pipeline units 205 adjacent in the circumferential direction) through the fluid groove 210 to traverse all the pipeline units 205. Correspondingly, one of the above-mentioned mounting hole groups constitutes a total inlet 211, and the other constitutes a total outlet 212, and is connected to the above-mentioned second accommodating interval 110 through the above-mentioned total inlet 211 and the total outlet 212. The cold lubricating oil flows into the pipeline unit 205 from the total inlet 211 and cools the motor stator, and finally flows back into the second accommodating interval 100 from the total outlet 212 and is cooled and re-enters the circulation. In the end plate, further, a cable hole 213 is also opened on the end plate 206.

[0051] Reference Figure 7, is a structural schematic diagram of a fan rotor assembly 300. The fan rotor assembly 300 is disposed as a whole in the circulation interval and is located radially inward of the motor stator assembly 200. The main body of the fan rotor assembly 300 is composed of a blade disk component 301 and a plurality of permanent magnet blocks 302, wherein the blade disk component 301 is composed of a disk body portion 301a, a crown portion 301b and a blade portion 301c. The disk body portion 301a is roughly a cylindrical component, and the crown portion 301b is roughly a sheet-shaped ring body and is located radially outward of the disk body portion 301a. The plurality of permanent magnet blocks 302 are embedded in the outer surface of the crown portion 301b and are evenly distributed in the circumferential direction. The blade portion 301c is composed of a plurality of rotating blades disposed circumferentially. The blade portion 301c is disposed between the disk body portion 301a and the crown portion 301b and connects the blade portion 301c and the crown portion 301b. Return to Figure 7 , the structure of the fan rotor assembly 300 is further described. The disk body 301a is provided with a mounting flange structure at one axial end thereof for mounting the fan fairing 304. Furthermore, the disk body 301a is provided with a second mounting mechanism 303 at both axial ends thereof for mounting some parts of the rotor support assembly 400 described later;

[0052] Reference Figure 8 , is a schematic diagram of the structure of a rotor support assembly 400, the rotor support assembly 400 includes a rotor support shaft 401, the rotor support shaft 401 has an oil inlet passage 601 extending along the axis O, one end of the oil inlet passage 601 is open, and the other end is closed, specifically, the rotor support shaft 401 has a middle section 401b located radially inside the disk body 301a of the fan rotor assembly 300 and a first section 401a and a second section 401c extending axially to the outside of the disk body 301a, wherein there is a spacing between the outer circumferential surface of the middle section 401b and the inner surface of the disk body 301a, corresponding to forming a first oil return section 603 in the oil return passage (described later), and returning to Figure 8, continue to explain the composition of the rotor support assembly 400, the rotor support assembly 400 also includes two bearings 402 installed at the two end positions of the middle section 401b, the two bearings 402 are installed through the second installation mechanism 303 on the disk body 301a, and at least one of the two bearings 402 installed at the two end positions of the middle section 401b is a ball bearing. The bearings 402 can support the rotor and allow the rotor to rotate on the one hand, and on the other hand, can transmit the axial force generated when the blades rotate back to the rotor support shaft 401. The connection positions of the first section 401a, the second section 401c and the middle section 401b are all provided with sealing structures 403, and a bearing cavity 602 is formed corresponding to the position of the bearing 402 to provide space for lubricating oil lubrication and / or cooling of the bearing 402, and the upper The rotor support shaft 401 is provided with circumferentially uniformly distributed radial small holes in front of the bearing 402 to spray lubricate the bearing 402 and realize the connection between the oil inlet channel 601 and the bearing cavity 602. At the same time, the first section 401a is also equipped with a clamping nut 404 on the outside of the sealing structure 403, which is used to limit the bearing 402 in the axial direction, so as to transmit the axial force transmitted by the bearing 402 to the rotor support shaft 401. Then, returning to the rotor support shaft 401, a mounting flange is formed on the outer circumferential surface of the second section 401c, which is used to cooperate with the first mounting structure 112 to realize the installation and positioning of the rotor support shaft 401, and a plurality of oil return holes 604 extending axially and connected to the first oil return section 603 are formed on the mounting flange. The plurality of oil return holes 604 are arranged at equal intervals in the circumferential direction. Figure 8 The rotor support assembly 400 further includes a sealing cover plate 405 installed on the outer side of the second section 401c of the rotor support shaft 401, which is used to realize the construction of the oil inlet pipeline and the oil inlet pipeline. Specifically, the sealing cover plate 405 is formed with an oil inlet port 405a and an oil outlet port 405b. The oil inlet port 405a is used to realize the connection between the oil inlet channel 601 and the external oil supply port, and the oil outlet port 405b is used for the connection between the first oil return section 603, the oil return hole 604, the bearing 402 cavity and the second oil return section 606. Figure 8 , the directions of the arrows of the solid and dotted lines in the figure indicate the flow direction of the lubricating oil in the rotor support shaft 401;

[0053] Reference Fig. 9 The power fan device also includes a shaft assembly 500, which includes a first shaft 501 and a second shaft 504 respectively installed on both sides of the support casing 101, and the axes of the first shaft 501 and the second shaft 504 coincide with each other. Fig. 9a and 9d, the first rotating shaft 501 includes a shaft column 502 and a hollow cable channel 503, wherein the shaft column 502 is used to realize the installation of the power fan device, and the shaft column is configured to be rotatable relative to the aircraft, and the cable channel 503 is used for energy and information exchange between the power fan device and the aircraft (described later), refer to Fig. 9 b, 9c, 9e and 9f, the main body of the second rotating shaft 504 is composed of an outer shaft column 506 and an inner shaft column 505, wherein the outer shaft column 506 is rotatably installed on the aircraft to cooperate with the shaft column body 502 of the first rotating shaft 501 to realize the angular adjustment of the power fan device. Specifically, the inner shaft column 505 is hollow and connected to the accessory compartment fairing 109, and an oil injection channel 600 connected to the second accommodating interval 110 is formed in the inner shaft column 505, and the oil injection channel 600 is connected to the oil inlet channel 601, and the low-temperature lubricating oil on the aircraft is introduced into the fan device to cool the motor and lubricate / cool the rotor bearing 402, and return to Fig. 9 A second oil return section 606 of the oil return line is formed between the inner shaft column 505 and the outer shaft column 506. The second oil return section 606 is also attached to the accessory compartment fairing 109 and is connected to the second accommodation area 110, so as to guide the high-temperature lubricating oil after the fan device lubricates / cools the rotor bearing 402 and cools the motor back to the aircraft for cooling, and then filter the impurities in the oil and then re-introduce it into the fan device, and together with the above-mentioned oil injection channel 600 and the oil inlet channel 601, form an oil circulation loop;

[0054] Furthermore, the above-mentioned power fan device also includes components such as a motor controller, pipelines and an oil pump (not shown in the figure) arranged in the second accommodating area 110. The cooling lubricating oil introduced by the aircraft is distributed by the controller here and enters different channels through the oil pump to cool the motor, controller, and rotor bearing 402; the hot lubricating oil of the motor, controller, and rotor bearing 402 is pumped back by the oil pump to the accessory compartment for collection and then returned to the aircraft.

[0055] The present invention also discloses an aircraft, referring to Fig.10 The aircraft has the above-mentioned power fan device (hereinafter referred to as the power fan). Specifically, the aircraft includes a main system (such as a control system and a fuselage system, etc.), a power generator and three power fans. The power generator is configured as a gas turbine generator capable of outputting electrical energy to provide power for the rest of the aircraft (such as the main system and the power fan, etc.). The three power fans are respectively installed on both sides and the rear of the aircraft and are configured to be rotatable and adjustable to drive the aircraft forward and upward. Fig.12 It is shown in the figure that the angular state of the electric ducted power fan is horizontal when the aircraft takes off and lands. Fig.11It shows that the angular state of the electric ducted power fan is vertical when the aircraft is flying forward. The aircraft can achieve maneuvering flight by having three power fan devices in different angular states, so it can replace traditional aircraft elevators, steering rudders, ailerons and other mechanisms to achieve flight control functions.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric ducted power fan device, characterized in that: include: A support casing including a housing portion defining a generally cylindrical flow region; A motor stator assembly is disposed in the circulation zone and mounted on the support casing, wherein the motor stator assembly is configured to generate a continuously changing magnetic field based on an external control system, and the motor stator assembly includes: The core assembly has an outer wall portion that is substantially in the shape of an annular sheet and a plurality of T-shaped portions fixed to the inner surface of the outer wall portion; The stator winding comprises a plurality of winding units wound on the T-shaped portion, and there is a spacing interval between adjacent winding units; A cooling pipeline assembly, comprising a pipeline unit disposed in the interval, the pipeline unit having an inlet and an outlet; An end plate, the pipeline unit is mounted on the end plate, and the end plate is provided with a fluid groove on the other side of the pipeline unit, and the end plate is provided with a cable hole and a plurality of mounting holes; The fan device further comprises a rotor support shaft assembly, comprising a rotor support shaft arranged along an axis O, and the rotor support shaft is mounted on the support casing, the support casing further comprises a second surrounding portion which is substantially cylindrical and a first surrounding portion which is arranged radially outside the second surrounding portion, the first surrounding portion and the second surrounding portion are connected by a plurality of load-bearing support plates which are evenly arranged in a circumferential direction, and the rotor support shaft is mounted by a first mounting structure on the second surrounding portion; A fan rotor assembly is mounted on the rotor support shaft and is configured to be able to rotate around an axis O. The fan rotor assembly includes a plurality of blades evenly arranged in a circumferential direction and a crown fixed to the radially outer side of the blades. The fan rotor assembly also includes a plurality of permanent magnets fixed to the outer surface of the crown and evenly arranged in the circumferential direction. The fan rotor assembly also includes a disk body located radially inside the crown, and a first oil return section is formed between the inner wall of the disk body and the outer wall of the rotor support shaft.

2. An electric ducted power fan device according to claim 1, characterized in that: The fan device further comprises an accessory compartment fairing mounted on one axial end of the shell portion, and the accessory compartment fairing, the first surrounding portion and the shell portion together enclose a second accommodating area that is in communication with the flow area.

3. The electric ducted power fan device according to claim 2, characterized in that: An oil inlet passage arranged along the axis O is formed in the rotor support shaft, and the oil inlet passage and the first oil return section are communicated through a radial small hole opened on the rotor support shaft.

4. The electric ducted power fan device according to claim 3, characterized in that: The rotor support shaft includes a middle section and a first section and a second section extending axially outward from both ends of the middle section. The rotor support shaft assembly also includes two bearings installed on the middle section, and a second mounting structure for mounting the bearings is formed on the disk body, and at least one of the two bearings is a ball bearing.

5. An electric ducted power fan device according to claim 4, characterized in that: The fan device further comprises a rotating shaft assembly, wherein the rotating shaft assembly comprises a first rotating shaft and a second rotating shaft which are installed on both radial sides of the supporting casing and whose axes coincide with each other.

6. An electric ducted power fan device according to claim 5, characterized in that: The first rotating shaft includes a shaft column and a hollow cable channel, the second rotating shaft includes an outer shaft column and an inner shaft column, the inner shaft column is connected to the accessory compartment fairing, and the inner shaft column is hollow inside to form an oil injection channel, and a second oil return section is formed between the outer shaft column and the inner shaft column.

7. An aircraft, characterized in that: The invention comprises a fan device as claimed in any one of claims 1 to 6, and the fan device is configured to be rotatable and adjustable.

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