CN115750411A - Ceiling fan based on axial flux motor - Google Patents

Abstract

The invention discloses a ceiling fan based on an axial flux motor, which adopts the axial flux motor to drive fan blades to rotate and has the characteristics of high rotating efficiency, stable operation, relatively small volume as a whole, safety and reliability; the fan blade connecting piece connecting part is fixedly connected with the rotor assembly relatively, the fan blade connecting piece inserting part extends into the fan blade and is fixedly connected with the fan blade relatively, the problem that the fan blade is damaged easily due to the fact that the fan blade connecting piece is directly connected with the surface of the fan blade in the prior art can be avoided, meanwhile, the fan blade connecting piece can also improve the structural strength of the fan blade, and the probability of deformation of the fan blade is reduced.

Description

A Ceiling Fan Based on Axial Flux Motor

【Technical field】

The present invention relates to a ceiling fan based on an axial flux motor.

【Background technique】

Industrial ceiling fan is a common industrial machine widely used in high and large spaces such as industrial plants, logistics storage, waiting rooms, exhibition halls, gymnasiums, supermarkets, etc., as a space ventilation and personnel cooling.

The industrial ceiling fan can push a large amount of airflow to the ground, forming a horizontal movement of the airflow layer at a certain height on the ground, thus promoting the overall air circulation. Coverage area.

However, industrial ceiling fans have the following defects:

1. At present, the fan blade of the industrial ceiling fan is usually connected with the motor by a leaf fork, one end of the leaf fork is fixedly connected to the motor, and the other end of the leaf fork is relatively fixedly connected to the surface of the fan blade. Nowadays, in order to reduce the manufacturing cost of the fan blade and reduce the weight of the fan blade, the fan blade is usually designed to be relatively thin, so that the connection between the blade fork and the surface of the fan blade will easily cause damage to the fan blade, affect the service life of the fan blade, and increase the maintenance of the fan blade. Replacement cost; in addition, the thinner fan blade also leads to lower rigidity of the fan blade, and the fan blade is easy to shake during rotation, which causes fatigue in the connection between the blade fork and the fan blade, and there is an unsafe factor.

2. The stator assembly used in the motor of industrial ceiling fans at the present stage usually includes a stator ring, a number of stator winding posts evenly distributed on the stator ring in the circumferential direction, and each stator winding post is provided with a retaining part at the end; However, the above-mentioned stator assembly is limited by the structural design. When using winding equipment for winding, in order to avoid interference, it is usually necessary to reserve space in the stator accommodation slot between two adjacent stator winding posts. Then, in the stator assembly In the case of a certain size, the number of winding turns of the above-mentioned stator assembly is less, which affects the size of the magnetic flux, which in turn affects the output power and torque of the motor, thereby affecting the use effect of the industrial ceiling fan. If it is necessary to ensure the number of turns of the winding, the design of the stator assembly must be increased, and this method will lead to an increase in the overall volume and weight of the axial flux motor, and will also increase the manufacturing cost.

3. At the present stage, the stator assembly and the stator shaft of the motor used in industrial ceiling fans are usually connected and fixed by a connection structure such as a snap ring. However, because the snap ring supports the stator assembly for a long time, it is easy to cause loosening and deformation of the snap ring, which affects the stator. The component is fixedly connected to the stator shaft, which causes structural instability and insecurity between the stator component and the stator shaft, which affects the normal use of the industrial ceiling fan.

4. At present, the rotor assembly of the motor used in industrial ceiling fans is usually connected to the stator shaft by ball bearings. Because the rotor assembly is affected by its own gravity and the gravity of the fan blade, it will generate a downward force in the axial direction, that is, the rotor assembly makes the ball The bearing is subjected to a downward force in the axial direction, which makes the operation of the ball bearing difficult, which in turn causes the rotor assembly to run unsmoothly and unsmoothly relative to the stator shaft, resulting in poor and unsmooth operation of the industrial ceiling fan.

For this reason, the present invention promptly researches and proposes at the above-mentioned problem.

【Content of invention】

The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a ceiling fan based on an axial flux motor, which can improve the existing problems of the prior art, and has the characteristics of stable structure, high structural strength, stable operation, safety and reliability.

The present invention is achieved through the following technical solutions:

A ceiling fan based on an axial flux motor, comprising a stator shaft 1, a stator assembly 2 relatively fixedly connected to the stator shaft 1, a rotor assembly 3 located above the stator assembly 2 and rotatable relative to the stator shaft 1, and circumferentially distributed A plurality of fan blades 5 on the rotor assembly 3, each of the fan blades 5 is connected to the rotor assembly 3 through a fan blade connector 4, and the fan blade connector 4 has a connecting part and a socket part, and the fan blade The connecting part of the connecting part 4 is relatively fixedly connected with the rotor assembly 3 , and the insertion part of the fan blade connecting part 4 protrudes into the fan blade 5 and is relatively fixedly connected with the fan blade 5 .

As mentioned above, a ceiling fan based on an axial flux motor, the stator assembly 2 includes an annular stator ring 22 and a coil winding 23, and the stator ring 22 is evenly distributed in the circumferential direction with axially extending A stator winding post 221, a stator receiving groove 222 is formed on the stator ring 22 and between two adjacent stator winding posts 221, and the two ends of the stator receiving groove 222 along the radial direction are open. The opposite sides of the stator accommodating slot 222 are straight faces, and the coil winding 23 includes a coil body 231 and a coil through hole 232 provided in the middle of the coil body 231 for mating connection with the stator winding post 221 .

As mentioned above, a ceiling fan based on an axial flux motor, the stator winding post 221 has an inner circular side wall 2211, a first straight side wall 2212, an outer circular side wall 2213 and a second straight side wall 2214, each One of the stator receiving slots 222 is located between two adjacent stator winding posts 221 and is composed of the first straight side wall 2212 of one stator winding post 221 and the first straight side wall 2212 of the other stator winding post 221. Two straight facing sidewalls 2214 are formed.

As mentioned above, a ceiling fan based on an axial flux motor, the center line 2215 of the stator winding post 221 passes through the center of the stator ring 22, and the first straight side of each stator winding post 221 The wall 2212 and the second straight side wall 2214 extend toward the center of the stator ring 22 and intersect a straight line parallel to the central axis of the stator ring 22 .

According to the above-mentioned ceiling fan based on an axial flux motor, the stator assembly 2 further includes a stator bottom case 21 adapted and connected with a stator ring 22, and the bottom of the stator ring 22 directly or indirectly interferes with the stator bottom case 21 inner bottom for heat conduction.

As mentioned above, a ceiling fan based on an axial flux motor, the stator assembly 2 includes a stator bottom case 21 and a stator ring 22 connected to the stator bottom case 21, and the bottom wall of the stator bottom case 21 is provided with a Bottom case through hole 211 matingly connected with shaft 1, the lower end of stator shaft 1 has a stator shoulder 11 integrally formed with it, and when the stator assembly 2 is connected to stator shaft 1 through bottom case through hole 211, the The inner surface of the stator shoulder 11 abuts against the outer surface of the through hole 211 of the bottom case to prevent the stator assembly 2 from axially moving downward relative to the stator shaft 1 .

As mentioned above, a ceiling fan based on an axial flux motor, the rotor assembly 3 includes a rotor disk 31 located above the stator assembly 2, and the rotor disk 31 is provided with a rotor through hole 311 matched with the stator shaft 1, so A rotor rotating member 32 is connected between the rotor disk 31 and the stator shaft 1, and a rotor disk 31 is provided between the rotor disk 31 and the stator shaft 1 or between the rotor disk 31 and the stator assembly 2 to support the rotor disk 31 to rotate smoothly relative to the stator shaft 1. The supporting rotating assembly 33.

As mentioned above, a ceiling fan based on an axial flux motor, the rotor rotating part 32 is a downward thrust bearing arranged between the rotor through hole 311 and the stator shaft 1, and the centripetal force is axially downward. The inner ring of the thrust bearing is relatively fixedly connected to the stator shaft 1 , and the outer ring of the downward thrust bearing is relatively fixedly connected to the inner wall of the rotor through hole 311 .

As mentioned above, a ceiling fan based on an axial flux motor, the supporting and rotating assembly 33 includes a plane bearing arranged between the rotor disk 31 and the stator assembly 2, and the support ring of the plane bearing is relatively fixedly connected with the stator assembly 2 , the support ring on the plane bearing is relatively fixedly connected to the rotor disk 31; or the support rotation assembly 33 includes an upward thrust bearing arranged between the rotor disk 31 and the stator shaft 1 and the downward force is axially upward, the The inner ring of the upward thrust bearing is relatively fixedly connected with the stator shaft 1 , and the outer ring of the upward thrust bearing is relatively fixedly connected with the inner wall of the rotor through hole 311 .

As mentioned above, a ceiling fan based on an axial flux motor, the fan blade 5 is hollow, and the left connecting inner rib 51 and the right connecting inner rib 52 are arranged at intervals between the upper inner wall and the lower inner wall of the fan blade 5 , the left connecting rib 51 and the right connecting inner rib 52 are oppositely provided with a left limiting groove 511 and a right limiting groove 521, and a supply fan is formed between the left limiting groove 511 and the right limiting groove 521 The positioning space 53 for inserting and positioning the plug-in part of the leaf connector 4; the fan blade 5 is provided with a fan blade installation hole 531 correspondingly located at the positioning space 53; The connector installation hole 42 is used to align with the fan blade installation hole 531 for connection when the socket part of the fan blade connector 4 is inserted into the positioning space 53. The mating connector connecting hole 41 also includes connecting bolts/rivets that can pass through the fan blade installation hole 531 and the connector installation hole 42 at the same time to securely connect the fan blade connector 4 and the fan blade 5 .

Compared with the prior art, the present invention has the following advantages:

1. Compared with the radial flux motor used in the prior art to drive the fan blades to rotate, the present invention uses an axial flux motor to drive the fan blades to rotate, which has high rotation efficiency, stable operation, and a relatively small overall volume , safe and reliable features.

2. In the present invention, the connection part of the fan blade connector is relatively fixedly connected with the rotor assembly, and the insertion part of the fan blade connector protrudes into the fan blade and is relatively fixedly connected with the fan blade, which can avoid the fan blade connection in the prior art. The parts are directly connected to the surface of the fan blade, which may easily cause damage to the fan blade. At the same time, the fan blade connector can also improve the structural strength of the fan blade and reduce the probability of deformation of the fan blade.

3. The stator assembly includes an annular stator ring and a coil winding. The stator ring is evenly distributed in the circumferential direction with axially extending stator winding posts. The stator ring is located on the two adjacent Stator accommodating slots are formed between the stator winding columns, the two ends of the stator accommodating slots in the radial direction are open, the opposite sides of the stator accommodating slots are straight faces, and the coil winding includes a coil body and a wire The coil through hole in the middle part of the coil body is used to connect with the stator winding post, which can make the coil winding assembled on the stator winding post fit more closely with the stator winding post, thereby making the coil winding and the stator winding post connected It is more stable, and at the same time, it can efficiently assemble the coil winding and the stator winding post, and maximize the number of turns of the coil winding in a unit space to increase the magnetic flux, thereby improving the output power and torque of the axial flux motor , and ensure that the volume of the axial flux motor is minimized, effectively reducing the manufacturing cost.

4. The stator assembly also includes a stator bottom case that is adapted and connected to the stator ring. The bottom of the stator ring is directly or indirectly in contact with the inner bottom of the stator bottom case for heat conduction, which can protect the stator assembly. At the same time Improve cooling efficiency.

5. The stator assembly includes a stator bottom case and a stator ring connected to the stator bottom case. The bottom wall of the stator bottom case is provided with a bottom case through hole for matching with the stator shaft. The lower end of the stator shaft has a One-piece stator shoulder, and when the stator assembly is connected to the stator shaft through the through hole of the bottom case, the inner surface of the stator shoulder abuts against the outer surface of the through hole of the bottom case to prevent the stator assembly from moving along the shaft relative to the stator shaft. Moving downward can make the connection between the stator assembly and the stator shaft more firm and reliable and the structure more stable. In addition, the stator shoulder and the stator shaft are integrally formed, which has the characteristics of simple structure and easy molding and manufacturing.

6. The rotor assembly includes a rotor disk located above the stator assembly. The rotor disk is provided with a rotor through hole matching with the stator shaft. A rotor rotating part is connected between the rotor disk and the stator shaft. The rotor disk Between the stator shaft or between the rotor disk and the stator assembly, there is a supporting rotating assembly for supporting the smooth rotation of the rotor disk relative to the stator shaft. Through the use of the supporting rotating assembly and the rotor rotating part, the supporting rotating assembly supports the rotor disk and can reduce the size of the rotor disk. The force applied to the rotating parts of the rotor makes the rotor disc rotate smoothly and steadily relative to the stator shaft.

【Description of drawings】

The specific embodiment of the present invention is described in further detail below in conjunction with accompanying drawing, wherein:

Fig. 1 is a perspective view of the present invention.

Figure 2 is an exploded view of the present invention.

Fig. 3 is an exploded view of the axial flux motor of the present invention.

Fig. 4 is a cross-sectional view of the axial flux motor of the present invention.

Fig. 5 is a perspective view of the stator assembly of the present invention.

Fig. 6 is a schematic structural view of the stator assembly of the present invention.

Fig. 7 is a top view of the stator assembly of the present invention when coil windings are assembled on the stator winding posts.

Fig. 8 is a side view of the stator assembly of the present invention when no coil winding is assembled on the stator winding post.

Fig. 9 is a top view of the stator assembly of the present invention when no coil winding is installed on the stator winding post.

Fig. 10 is a schematic structural view of the fan blade of the present invention.

Fig. 11 is a side view of the fan blade of the present invention.

Fig. 12 is one of the exploded views of the fan blade of the present invention.

Fig. 13 is the second exploded view of the fan blade of the present invention.

Fig. 14 is a perspective view of the spoiler of the present invention.

Fig. 15 is a front view of the spoiler of the present invention.

Fig. 16 is a schematic diagram of the spoiler of the present invention viewed from the direction of its tail end.

Fig. 17 is a sectional view of the spoiler of the present invention.

Figure 18 is a bottom view of the present invention.

Fig. 19 is a sectional view of another embodiment of the axial flux motor of the present invention

【Detailed ways】

Embodiments of the present invention will be described in detail below in conjunction with accompanying drawings 1-19.

As shown in Figures 1-18, a ceiling fan based on an axial flux motor according to the present invention includes a stator shaft 1, a stator assembly 2 relatively fixedly connected to the stator shaft 1, and a stator assembly 2 located above the stator assembly 2 that can be positioned relative to the stator shaft. 1 Rotating rotor assembly 3 and several fan blades 5 distributed on the rotor assembly 3 in a circumferential manner, each of the fan blades 5 is connected to the rotor assembly 3 through a fan blade connector 4, and the fan blade connector 4 has a connection The connection part of the blade connector 4 is relatively fixedly connected with the rotor assembly 3 , and the insertion part of the blade connector 4 protrudes into the fan blade 5 and is relatively fixedly connected with the fan blade 5 . Compared with the radial flux motor used in the prior art to drive the fan blades to rotate, the present invention uses an axial flux motor to drive the fan blades to rotate, which has the advantages of high rotation efficiency, stable operation, relatively small overall volume, and safety. Reliable features; wherein the connecting part of the fan blade connector is relatively fixedly connected with the rotor assembly, and the insertion part of the fan blade connector protrudes into the fan blade and is relatively fixedly connected with the fan blade, which can avoid the fan blade in the prior art. The connecting piece is directly connected to the surface of the fan blade, which is likely to cause damage to the fan blade. At the same time, the fan blade connecting piece can also improve the structural strength of the fan blade and reduce the probability of deformation of the fan blade.

As shown in FIG. 1 , in order to make the ceiling fan run more smoothly, the number of fan blades is an even number, for example, the number of fan blades is 4, 6, or 8.

As shown in Figures 1-9, the stator assembly 2 includes an annular stator ring 22 and a coil winding 23, and the stator ring 22 is evenly distributed in the circumferential direction with axially extending stator winding posts 221, A stator receiving groove 222 is formed on the stator ring 22 and between two adjacent stator winding posts 221. The two ends of the stator receiving groove 222 along the radial direction are open. The stator receiving groove 222 The opposite sides are straight faces, and the coil winding 23 includes a coil body 231 and a coil through hole 232 arranged in the middle of the coil body 231 for cooperating with the stator winding post 221, so that the coil assembled on the stator winding post 221 can The winding and the stator winding post fit more closely, which makes the connection between the coil winding and the stator winding post more stable. At the same time, the coil winding and the stator winding post can be assembled efficiently, and the coil winding is ensured to the maximum extent in the unit space. The number of turns of the windings is used to increase the magnetic flux, thereby improving the output power and torque of the axial flux motor, and ensuring that the overall volume of the axial flux motor is minimized, effectively reducing the manufacturing cost.

As shown in Figures 1-9, the stator winding post 221 has an inner circular side wall 2211, a first straight side wall 2212, an outer circular side wall 2213 and a second straight side wall 2214, each of the stator receiving slots 222 is located between two adjacent stator winding posts 221 and is formed by the first straight side wall 2212 of one stator winding post 221 and the second straight side wall 2214 of the other stator winding post 221 .

The edges between the inner circular side wall 2211, the first straight side wall 2212, the outer circular side wall 2213 and the second straight side wall 2214 are arranged in an arc shape, which can increase the contact area between the edge and the coil winding, Avoid scratching the coil winding by the edge, play a protective role, prolong the service life of the coil winding and ensure the working stability of the stator assembly.

As shown in Figures 1-9, the center line 2215 of the stator winding post 221 passes through the center of the stator ring 22, and the first straight side wall 2212 and the second straight side wall 2212 of each stator winding post 221 The sidewall 2214 extends toward the center of the stator ring 22 and intersects with a straight line parallel to the central axis of the stator ring 22 .

As shown in Figure 1-9, in order to increase the number of stator winding posts and coil windings to increase the magnetic flux and improve the output power and torque of the axial flux motor, between the centerlines 2215 of the two adjacent stator winding posts 221 The angle between them is α, then there are 3°≤α≤15°.

Preferably, the included angle α between the centerlines 2215 of two adjacent stator winding posts 221 is 8°, and if there are 52 stator winding posts 11, there are 52 sets of coil windings, which can increase the number of stator winding posts 221. The number of columns and coil windings is used to increase the magnetic flux, while ensuring the overall balance of the stator ring and stable operation of the stator assembly.

As shown in Figure 1-9, the cross-section of the stator winding post 221 is set in a trapezoidal shape, and the shape of the coil through hole 232 is correspondingly adapted to the stator winding post 221, which can increase the size of the stator winding post and the coil. The contact area of the wire winding makes the connection between the two more stable.

As shown in Figures 1-9, the coil winding 23 is fixedly socketed on the stator winding post 221 through glue, which can make the connection between the two more firm and prevent the coil winding from moving relative to the stator winding post. Problems that cause unstable operation of the stator assembly. The connection terminals 233 of each coil winding 23 are located inside the stator ring 22 and connected accordingly, which can avoid the problems of high connection cost and complicated connection caused by the connection terminals 233 not being on the same side of the stator ring 22, and facilitate the connection of the connection terminals 233. Protect the connection terminal 233.

As shown in Figures 1-9, the stator assembly 2 further includes a stator bottom case 21 adapted and connected to the stator ring 22, and the bottom of the stator ring 22 directly or indirectly touches the inner bottom of the stator bottom case 21 for heat conduction , can protect the stator assembly 2, and at the same time can better dissipate heat from the stator ring 22, avoiding that when the axial flux motor is working, the temperature of the stator assembly 2 is too high, which will affect the output power and burnout of the axial flux motor Axial flux motor.

As shown in Figures 1-9, the stator bottom case 21 includes a bottom case outer ring 212 and a bottom case inner ring 213 located inside the bottom case outer ring 212, and the stator bottom case 21 is located on the bottom case outer ring 212 and the bottom case inner ring 213. A bottom case installation groove 214 for installing the stator ring 22 is formed between the inner ring 213 of the bottom case, and the installation is convenient. The bottom casing filling groove 215 where the connecting terminal 233 is fixed, and the connecting terminal 233 of each coil winding 23 is located in the bottom casing filling groove 215, which can avoid the problem of poor contact caused by the shaking and loosening of the connecting terminal 233, so that the connecting terminal 233 is more stable to ensure the stable operation of the stator assembly and ensure product quality.

As shown in FIG. 18 , on the outer bottom of the stator bottom case 21 corresponding to the bottom of the stator ring 22 , there are several bottom case cooling fins 216 , which can increase the heat dissipation area and improve the heat dissipation efficiency.

As shown in Figure 18, in order to better dissipate heat, the bottom case cooling fins 216 include circumferential heat dissipation ribs arranged at the bottom of the stator ring 22 and arranged at intervals along the circumferential direction of the stator bottom case 21 and arranged on the stator ring 22 The radial heat dissipation ribs arranged at intervals along the radial direction of the bottom position of the stator bottom case 21 , and the circumferential heat dissipation ribs are intersected with the radial heat dissipation ribs.

As shown in Figures 1-9, the stator assembly 2 includes a stator bottom case 21 and a stator ring 22 connected to the stator bottom case 21, and the bottom wall of the stator bottom case 21 is provided with a bottom for mating connection with the stator shaft 1 Shell through hole 211, the lower end of the stator shaft 1 has a stator shoulder 11 integrally formed with it, and when the stator assembly 2 is connected to the stator shaft 1 through the bottom case through hole 211, the inner part of the stator shoulder 11 The side is against the outer surface of the through hole 211 of the bottom case to prevent the stator assembly 2 from axially moving downward relative to the stator shaft 1, which can make the connection between the stator assembly and the stator shaft more reliable and stable and the structure more stable. In addition, the stator shoulder and the stator The shaft is integrally formed, which has the characteristics of simple structure and easy forming and manufacturing. As shown in FIGS. 3-5 , the through hole 211 of the bottom case is located inside the inner ring 213 of the bottom case.

As shown in FIGS. 1-9 , in order to improve the connection strength, bottom casing reinforcing ribs 2110 extending radially are provided on the stator bottom casing 21 and along the periphery of the bottom casing through hole 211 .

In some embodiments, the number of the stator shoulders 11 is multiple, and the plurality of stator shoulders 11 are located at the lower end of the stator shaft 11 in a stepped shape in the axial direction to prevent the stator assembly from axially moving downward relative to the stator shaft. It can play the role of multiple support and limit, improve the structural strength of the connection between the stator shaft and the stator assembly, and ensure that the connection between the stator shaft and the stator assembly is more firm, reliable and safe.

In order to make the stator bottom case firmly connected to the stator shaft and prevent the stator bottom case 21 from rotating relative to the stator shaft 1 , the bottom case through hole 211 of the stator bottom case 21 is interference fit with the stator shaft 1 .

As shown in Figure 1-9, in order to improve the connection strength and better match the stator bottom case to prevent the stator bottom case from moving downward in the axial direction, a stator method is provided at the lower end of the stator shaft 1 and above the stator shoulder 11. The flange cover 12, the middle part of the stator flange cover 12 is provided with a flange through hole 121 for cooperating with the stator shaft 1, when the stator flange cover 12 is sleeved on the stator shaft 1 through the flange through hole 121 and the bottom of the stator When the shell 21 is sleeved on the stator shaft 1 through the through hole 211 of the bottom shell and is located above the stator flange cover 12, the inner surface of the stator shoulder 11 abuts against the outer surface of the flange through hole 121, and the stator flange cover The upper end surface of 12 abuts against the outer surface of the through hole 211 of the bottom case to prevent the stator assembly 2 from axially moving downward relative to the stator shaft 1 . In this embodiment, the stator bottom case 21 is relatively fixedly connected to the stator flange cover 12 by bolts/rivets and other fasteners.

As shown in FIGS. 1-9 , the outer surface of the stator bottom case 21 is formed with a bottom case accommodation chamber for accommodating the stator flange cover 12 , which can make the structure of the axial flux motor more compact and the connection structure more stable.

The stator flange cover 12 is detachably connected to the stator shaft 1, and the flange through hole 121 of the stator flange cover 12 is interference-fitted with the stator shaft 1 or connected by a spline, so that the relative stator flange cover 12 is limited. Axis 1 turns. During production and processing, since the transverse width of the stator flange cover is inconsistent with the transverse width of the stator shaft, the stator shaft and the stator flange cover are manufactured separately, which can save manufacturing costs.

As shown in Figures 1-4, the rotor assembly 3 includes a rotor disk 31 located above the stator assembly 2, the lower surface of the rotor disk 31 is correspondingly provided with magnetic tiles for use with the coil winding 23, the rotor The disc 31 is provided with a rotor through hole 311 matching with the stator shaft 1, and a rotor rotating part 32 is connected between the rotor disc 31 and the stator shaft 1, and between the rotor disc 31 and the stator shaft 1 or between the rotor disc 31 and the stator A supporting and rotating assembly 33 is provided between the assemblies 2 for supporting the rotor disk 31 to rotate smoothly relative to the stator shaft 1. By using the supporting and rotating assembly in conjunction with the rotor rotating member, the supporting rotating assembly can support the rotor disk to reduce the impact of the rotor disk on the rotor rotating member. The force makes the rotor disk rotate smoothly and steadily relative to the stator shaft. In this embodiment, the shape of the magnetic tile is trapezoidal, etc., which can increase the magnetic flux and improve the operating efficiency of the ceiling fan.

As shown in Figures 1-4, preferably, the rotor rotating member 32 is a downward thrust bearing arranged between the rotor through hole 311 and the stator shaft 1 and the centripetal force is axially downward. The outer ring of the downward thrust bearing is relatively fixedly connected with the stator shaft 1, and the outer ring of the downward thrust bearing is relatively fixedly connected with the inner wall of the rotor through hole 311, which can prevent the phenomenon of upward movement of the rotor disk in the axial direction during the rotation process, and make the rotation of the rotor disk more stable. , smooth.

As shown in Figures 1-4, preferably, the supporting and rotating assembly 33 includes a plane bearing arranged between the rotor disk 31 and the stator assembly 2, the support ring of the plane bearing is relatively fixedly connected with the stator assembly 2, and the The support ring on the plane bearing is relatively fixedly connected with the rotor disc 31 . As shown in FIG. 4, the plane bearing is installed on the stator bottom case 21 and is located inside the bottom case inner ring 213, which can better support the rotor disk 31, improve the structural strength of the rotor disk, and at the same time make the rotor disk more stable and smooth relative to the stator shaft. turn.

As shown in FIG. 19 , the supporting and rotating assembly 33 includes an upward thrust bearing arranged between the rotor disk 31 and the stator shaft 1 and the downward force is axially upward. The upward thrust bearing is located below the downward thrust bearing, so The inner ring of the upward thrust bearing is relatively fixedly connected to the stator shaft 1 , and the outer ring of the upward thrust bearing is relatively fixedly connected to the inner wall of the rotor through hole 311 .

As shown in Figures 1-4, a support connector 34 is provided on the stator bottom case 21 and between the plane bearing and the downward thrust bearing, and a support connection through hole 341 is provided in the middle of the support connector 34, The inner wall of the support connection through hole 341 is relatively fixedly connected to the outer ring of the downward thrust bearing, the outer wall of the support connector 34 is relatively fixedly connected to the inner wall of the upper support ring of the plane bearing, and the upper surface of the support connector 34 supports the rotor disk 31 lower surface, which can make the structure of the present invention more stable, run more smoothly and better support the rotor disk.

As shown in Figures 1-4, for better connection and installation, the upper surface of the rotor disk 31 is distributed with installation and positioning grooves 312 at intervals in the circumferential direction for the installation and positioning of the connecting part of the fan blade connector 4. The rotor disk 31 Mounting through holes are respectively provided on the top and in the installation positioning groove 312 and at the connecting portion of the fan blade connector 4 for bolts/rivets to connect the fan blade connector 4 and the rotor disk 31 fixedly.

As shown in Figures 1-4, in order to better ensure a firmer and more stable connection between the blade connector 4 and the rotor disk 31, the installation positioning groove 312 is provided on the rotor disk 31 and is used to limit the blade connector 4 along the Two positioning sidewalls 3121 of the rotor disk 31 move in the circumferential direction and a positioning protrusion 3122 provided on the rotor disk 31 and located at the inner end side of the positioning sidewalls 3121 for restricting the radial movement of the blade connector 4 along the rotor disk 31 .

As shown in Figures 1 and 10-17, the fan blade 5 is hollow, and a left connecting inner rib 51 and a right connecting inner rib 52 are arranged between the upper inner wall and the lower inner wall of the fan blade 5 at intervals. The connecting inner rib 51 and the right connecting inner rib 52 are provided with a left limiting groove 511 and a right limiting groove 521 facing each other, and a fan blade connector 4 is formed between the left limiting groove 511 and the right limiting groove 521. The positioning space 53 for plugging and positioning of the socket part; the fan blade 5 is provided with a fan blade installation hole 531 correspondingly located at the positioning space 53; When the part is plugged into the positioning space 53, it is used to align with the fan blade installation hole 531 for connection. The connecting part of the fan blade connector 4 is also provided with a connector for connecting with the rotor assembly The connecting hole 41 also includes connecting bolts/rivets that can be passed through the blade installation hole 531 and the connector installation hole 42 to securely connect the fan blade connector 4 and the fan blade 5 . In the present invention, the left connecting inner rib 51 and the right connecting inner rib 52 are provided at intervals between the upper inner wall and the lower inner wall of the fan blade 5, which can reduce the deformation of the fan blade under the action of the wind during the rotation process. Improve the structural strength of the fan blade. In addition, the left connecting inner rib 51 and the right connecting inner rib 52 are located in the inner cavity of the fan blade. In the case of the same volume and size of the fan blade, the present invention has a structure in which the inner rib is built-in compared to the inner rib. The overall volume of the fan blade is small, which is convenient for storage and transportation; a positioning space 53 is formed between the left limiting groove 511 and the right limiting groove 521 for the insertion and positioning of the blade connector 4 . The plug-in part of the blade connector is plugged into the positioning space, which can effectively solve the problem in the prior art that the fan blade connector is directly connected to the outer surface of the fan blade, causing damage to the blade and affecting the service life of the fan blade. During the process, it can reduce the force on the fasteners such as connecting bolts/rivets, effectively avoid the deviation between the blade connector and the blade, the deformation of the fastener or mechanical fatigue, and improve the connection between the blade connector and the blade. Strength and connection stability; at the same time, the positioning space also plays a role in guiding and positioning the fan blade connector, which is convenient for installation.

As shown in Figures 1, 10-17, the upper inner wall and/or the lower inner wall of the fan blade 5 are located in the positioning space 53 and are used to communicate with the positioning space 53 when the blade connector 4 is inserted into the positioning space 53 The reinforced inner ribs 54 abutting against the inserting portion of the fan blade connector 4 can further improve the structural strength of the fan blade, and at the same time improve the structural strength between the fan blade and the fan blade connector to ensure the stability of the fan blade structure.

As shown in Figures 1 and 10-17, the fan blade installation hole 531 is located at the position of the reinforced inner rib 54, which enhances the connection strength between the side wall of the fan blade installation hole 531 and the connecting bolt/rivet, and improves the structural stability.

As shown in Figures 1 and 10-17, in order to further improve the connection strength between the blade connector and the blade, the blade connector 4 is provided with a The connector gasket for abutting against the reinforcing inner rib 54 is provided with a gasket installation hole aligned with the connector installation hole 42 , which is not shown in the figure. During assembly, the connector gasket can be fixed on the fan blade connector 4 by glue bonding. At this moment, the gasket installation hole is aligned with the connector installation hole 42, and then the fan blade connector 4 is inserted into the positioning space 53 until the connector installation hole 42 is aligned with the fan blade installation hole 531, and then the connecting bolts/rivets are simultaneously inserted in the fan blade installation hole 531, the gasket installation hole and the connector installation hole 42 to secure the fan blade connector 4 , the connector gasket and the fan blade 5 are fixedly connected.

Further, the connector gasket is made of deformable materials such as silica gel or rubber, which can prevent the fan blade connector from being in direct rigid contact with the fan blade and cause mutual abrasion, prolong the service life of the two, and can also play a shock absorbing role. Reduce the vibration of the fan blade caused by the axial flux motor through the fan blade connector, and ensure the smooth rotation of the fan blade.

As shown in Figure 1, 10-17, in order to further improve the connection strength between the fan blade connector and the fan blade, the fan blade 5 is provided with a fan blade spacer 55, and the fan blade spacer 55 is provided with a The mounting holes 531 are aligned with the spacer mounting holes 551 for connection. In this embodiment, as shown in FIGS. 10 and 11 , the fan blade spacer 55 is located on the outer wall of the fan blade 5 .

As shown in Figures 1, 10-17, in order to make the fan blade structure more stable and reduce assembly steps, the fan blade 5 is integrally extruded from aluminum material.

As shown in Figures 1 and 10-17, the length of the fan blade 5 is 0.8-2.5m. Preferably, the length of the fan blade 5 is 1.35m, which can better disturb the air, improve the turbulence effect, and realize the large-area blowing effect.

As shown in Figures 1, 10-17, it also includes a spoiler 56 connected to the tail end of the fan blade 5, and the spoiler 56 has a connection end surface 561 that can be connected to the tail end of the fan blade 5, and a connection end surface 561 relative to the tail end face 563, the front end face 562 between the front end of the connecting end face 561 and the front end of the tail end face 563, the rear end face 564 between the rear end of the connecting end face 561 and the rear end of the tail end face 563, the spoiler upper surface 565 and the spoiler Flow down surface 566, the rear end surface 564 is bent upward from the connection end surface 561 to the tail end surface 563, the spoiler upper surface 565 and the spoiler lower surface 566 are bent upward from the connection end surface 561 to the tail end surface 563, the spoiler bottom The surface 566 is inclined to the rotation direction of the fan blade 5 . When the ceiling fan is running, the spoiler can effectively cut off the vortex at the tail of the fan blade, so that the ceiling fan runs smoothly, improves the running effect of the ceiling fan, and reduces energy consumption; And make it have an upward force, because the upper surface of the spoiler is bent upward from the connecting end face to the tail end face, so that the upper surface of the spoiler can be better in contact with the wind and the spoiler has a downward force, then the downward force and the upward force cancel each other out, thereby reducing the vibration frequency of the fan blade during rotation, ensuring the smooth rotation of the fan blade, and then making the connection between the fan blade connecting piece of the fan blade and the rotor assembly stable; in addition, the lower surface of the spoiler is from the connecting end face to the tail end face The direction is bent upwards, which can make the wind passing through the lower surface of the spoiler diffuse toward the radial direction of the fan blade, so that the blowing range is wider and the spoiler effect is better.

As shown in Figures 1 and 10-17, in order to facilitate the bending and twisting of the rear end surface, the area of the rear end surface 564 gradually increases from the connection end surface 561 to the tail end surface 563.

As shown in FIGS. 1 and 10-17 , in order to reduce manufacturing costs, the length of the connecting end surface 561 is greater than the length of the tail end surface 563 . In this embodiment, the length of the connection end surface 561 is the length of the connection end surface 561 from the front end surface 562 to the rear end surface 564, and the length of the tail end surface 563 is the length of the tail end surface 563 from the front end surface 562 to the rear end surface 564.

As shown in Figures 1 and 10-17, the spoiler 56 is plugged into the tail end of the fan blade 5 through the connector 560, and the connector 560 and the fan blade 5 are fastened by screws/rivets, etc. The two parts are fixedly connected, which can make the connection between the spoiler and the fan blade more firm, and at the same time facilitate the disassembly and assembly of the spoiler and the fan blade. The connection structure between the plug connector 560 and the fan blade 5 in this embodiment is the same as the connection structure between the fan blade connector 4 and the fan blade 4 , and will not be repeated here.

Claims (10)

1. A ceiling fan based on an axial flux motor, characterized in that it comprises a stator shaft (1), a stator assembly (2) relatively fixedly connected to the stator shaft (1), positioned above the stator assembly (2) and can be A rotor assembly (3) rotating relative to the stator shaft (1) and several blades (5) circumferentially distributed on the rotor assembly (3), each of the blades (5) passing through a blade connector (4) Connected with the rotor assembly (3), the fan blade connector (4) has a connecting part and a plug-in part, and the connecting part of the fan blade connector (4) is relatively fixedly connected with the rotor assembly (3), and the fan blade The insertion part of the connector (4) protrudes into the fan blade (5) and is relatively fixedly connected with the fan blade (5). 2. A ceiling fan based on an axial flux motor according to claim 1, characterized in that the stator assembly (2) includes an annular stator ring (22) and a coil winding (23), and the stator The ring (22) is evenly distributed in the circumferential direction with axially extending stator winding posts (221), and the stator ring (22) is formed between two adjacent stator winding posts (221). The stator accommodation groove (222), the two ends of the stator accommodation groove (222) in the radial direction are open, the opposite sides of the stator accommodation groove (222) are straight faces, and the coil winding (23) includes a coil body (231) and a coil through hole (232) provided on the middle part of the coil body (231) for mating connection with the stator winding post (221). 3. A ceiling fan based on an axial flux motor according to claim 2, characterized in that the stator winding post (221) has an inner circular side wall (2211), a first straight side wall (2212), The outer circular side wall (2213) and the second straight-facing side wall (2214), each of the stator accommodating slots (222) is located between two adjacent stator winding posts (221) and is wound by one of the stator winding posts (221). A first straight facing side wall (2212) of a post (221) is formed with a second straight facing side wall (2214) of another said stator winding post (221). 4. A ceiling fan based on an axial flux motor according to claim 3, characterized in that the center line (2215) of the stator winding post (221) passes through the center of the stator ring (22), and every The first straight side wall (2212) and the second straight side wall (2214) of one of the stator winding posts (221) extend toward the center of the stator ring (22) and intersect in a circle parallel to the stator ring (22). A straight line on the central axis. 5. A ceiling fan based on an axial flux motor according to claim 1, characterized in that the stator assembly (2) comprises a stator bottom case (21) and a stator ring (22) connected to the stator bottom case (21) ), the bottom wall of the stator bottom case (21) is provided with a bottom case through hole (211) for mating connection with the stator shaft (1), and the lower end of the stator shaft (1) has a stator shoulder integrally formed with it (11), and when the stator assembly (2) is connected to the stator shaft (1) through the bottom case through hole (211), the inner surface of the stator shoulder (11) is against the bottom case through hole (211 ) outer surface to prevent the stator assembly (2) from axially moving downward relative to the stator shaft (1). 6. A ceiling fan based on an axial flux motor according to claim 1, characterized in that the rotor assembly (3) comprises a rotor disk (31) located above the stator assembly (2), and the rotor disk (31 ) is provided with a rotor through hole (311) matching with the stator shaft (1), and a rotor rotating part (32) is connected between the rotor disc (31) and the stator shaft (1), and the rotor disc (31) Between the stator shaft (1) or between the rotor disk (31) and the stator assembly (2), there is a support rotation assembly (33) for supporting the rotor disk (31) to rotate smoothly relative to the stator shaft (1). 7. A ceiling fan based on an axial flux motor according to claim 6, characterized in that the rotor rotating part (32) is arranged between the rotor through hole (311) and the stator shaft (1) and the centripetal force is along In the axially downward downward thrust bearing, the inner ring of the downward thrust bearing is relatively fixedly connected to the stator shaft (1), and the outer ring of the downward thrust bearing is relatively fixedly connected to the inner wall of the rotor through hole (311). 8. A ceiling fan based on an axial flux motor according to claim 7, characterized in that the supporting rotating assembly (33) includes a plane bearing arranged between the rotor disk (31) and the stator assembly (2), The lower supporting ring of the plane bearing is relatively fixedly connected with the stator assembly (2), and the upper supporting ring of the plane bearing is relatively fixedly connected with the rotor disk (31); or the supporting rotating assembly (33) includes a ) and the stator shaft (1) and the upward thrust bearing in which the downward force is axially upward, the inner ring of the upward thrust bearing is relatively fixedly connected with the stator shaft (1), and the outer ring of the upward thrust bearing is connected to the through hole of the rotor (311) The inner walls are relatively fixedly connected. 9. A ceiling fan based on an axial flux motor according to any one of claims 6-8, characterized in that the upper surface of the rotor disk (31) is distributed at intervals in the circumferential direction for fan blade connectors ( 4) The installation and positioning groove (312) for the installation and positioning of the connecting part, the installation and positioning groove (312) includes the installation and positioning groove (312) provided on the rotor disk (31) and used to limit the fan blade connector (4) along the circumferential direction of the rotor disk (31). The movable two positioning side walls (3121) and the inner end side of the positioning side wall (3121) provided on the rotor disc (31) are used to limit the radial movement of the fan blade connector (4) along the rotor disc (31) Locating tabs (3122). 10. A ceiling fan based on an axial flux motor according to any one of claims 1-8, characterized in that the fan blade (5) is hollow, and the upper inner wall and the lower inner wall of the fan blade (5) are The left connecting inner ribs (51) and the right connecting inner ribs (52) are arranged at intervals, and the left limiting grooves (511) are oppositely arranged on the left connecting inner ribs (51) and the right connecting inner ribs (52). ) and the right limiting groove (521), between the left limiting groove (511) and the right limiting groove (521) is formed a positioning space (53 ); A fan blade installation hole (531) is provided on the fan blade (5) and correspondingly located in the positioning space (53); The blade connector (4) is provided with a connector installation for aligning with the fan blade installation hole (531) when the inserting portion of the blade connector (4) is inserted into the positioning space (53). A hole (42), the connecting part of the fan blade connecting part (4) is also provided with a connecting part connecting hole (41) for connecting and matching with the rotor assembly (3); It also includes connecting bolts/rivets that can be passed through the fan blade installation hole (531) and the connector installation hole (42) simultaneously to securely connect the fan blade connector (4) and the fan blade (5).

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