Fan assembly and blowing device

Abstract

The utility model discloses a fan assembly and a blowing device. The fan assembly comprises a fan shell; the assembly seat is arranged in the fan shell, and the assembly seat is connected with the fan shell through a plurality of static blades; one end of the motor assembly is inserted into the assembling seat and is connected with the assembling seat; and the other end of the motor assembly is inserted into the fan blade and is connected with the fan blade. Compared with the scheme that the motor assembly is completely inserted into the fan blades, the structure has the advantages that the portion, covering the motor assembly, of the fan blades is small, and the length of the fan blades in the axial direction is reduced. The axial length of the fan blade is reduced, so that the rotating force arm of the whole fan blade is shortened, and the rotating torque of the fan blade is reduced. The rotating torque of the fan blades is reduced, and the fan blades rotate faster under the same output environment of the motor assembly.

Description

Technical Field

[0001] The present application relates to the field of fans, and in particular to a fan assembly and a blowing device. Background Art

[0002] In the hot summer, fans have become a must-have item for people to eliminate the heat. With people's demand for convenient use, lighter and more portable fans are becoming more and more popular.

[0003] In the prior art, a fan motor and fan blades are provided inside the fan. In order to simplify the assembly structure of the fan motor and fan blades, the magnetic ring of the fan motor is assembled in the hub of the fan blades, and the fan blades equipped with the magnetic ring are completely covered on the magnetic ring of the fan motor.

[0004] The inventors of this invention discovered during research that when the fan motor rotates at high speed, the assembly scheme in which the fan blades are completely covered by the fan motor increases the length of the fan blades in the axial direction, thereby increasing the rotational torque of the fan blades. This increased rotational torque increases the kinetic energy required to rotate the fan blades, reducing the rotational speed of the fan blades while maintaining the same output. Excessive rotational torque can also cause the fan blades to become unstable, making them prone to abnormal vibration. Utility Model Content

[0005] The purpose of the present application is to provide a fan assembly and a blowing device that are more suitable for high-speed rotation and have higher rotation stability.

[0006] An embodiment of the present application provides a fan assembly, comprising:

[0007] fan housing;

[0008] An assembly seat, the assembly seat is arranged in the fan housing, and the assembly seat is connected to the fan housing through a plurality of stationary blades;

[0009] A motor assembly, one end of which is inserted into the assembly seat and connected to the assembly seat;

[0010] The other end of the motor assembly is inserted into the fan blade and connected to the fan blade.

[0011] Optionally, a connecting shaft and a plurality of reinforcing ribs are provided in the fan blades, the plurality of reinforcing ribs are arranged around the connecting shaft, and the motor assembly abuts against the connecting shaft and / or the plurality of reinforcing ribs to reduce the rotational torque of the fan blades; and / or,

[0012] The motor assembly is a three-phase motor; and / or,

[0013] The motor assembly is powered by a battery.

[0014] Optionally, the length of the motor assembly inserted into the assembly seat is greater than the length of the motor assembly inserted into the fan blade; and / or,

[0015] The outer diameter of the assembly seat is the same as the maximum outer diameter of the hub of the fan blade; and / or,

[0016] The rated operating voltage of the motor assembly is 6-8.4V or 9-12.6V; and / or,

[0017] The rated operating current of the motor assembly is 0.1-2.9A or 0.08-2.7A; and / or,

[0018] The rated power of the motor assembly is 0.6-25W or 0.7-33W; and / or,

[0019] The rotation speed of the motor assembly is 14,000-48,000 rpm.

[0020] Optionally, one end of the plurality of stationary blades facing the fan blades is formed with guide serrations; and / or,

[0021] The fan blades are provided with a plurality of moving blades, and one end of the plurality of moving blades facing the assembly seat is provided with trailing edge serrations.

[0022] Optionally, each of the multiple stationary blades is bent and extended along the inner surface of the fan casing, and the multiple moving blades are bent and extended along the hub surface of the fan blades, and the bending direction of the multiple stationary blades is opposite to the rotation direction of the multiple moving blades.

[0023] Optionally, the tooth marks of the guide serrations are arranged obliquely; and / or,

[0024] The tooth marks of the trailing edge serrations are arranged obliquely.

[0025] Optionally, the motor assembly includes: a motor stator and a motor rotor, the motor stator is connected to the assembly seat, the motor rotor is sleeved on the motor stator, and a partial structure of the motor rotor is inserted into the assembly seat, one end of the motor rotor is inserted into the assembly seat, and the other end of the motor rotor is inserted into the fan blade and connected to the fan blade.

[0026] Optionally, there is a gap between the inner side wall of the fan blade and the side wall of the motor rotor inserted into the fan blade.

[0027] Optionally, the motor rotor includes: a magnetic ring and a motor casing, the magnetic ring is sleeved on the motor stator, the motor casing is sleeved on the magnetic ring, and the motor casing is provided with multiple air inlet openings at one end facing the fan blades, and the multiple air inlet openings are symmetrically arranged in pairs.

[0028] To achieve the purpose of this application, an embodiment of this application further provides a blowing device, which is assembled with any one of the fan assemblies described above.

[0029] The beneficial effects of the embodiments of the present application are as follows: one end of the motor assembly is inserted into the assembly seat, and the other end of the motor assembly is inserted into the fan blades. This structure makes the area covered by the fan blades on the motor assembly smaller than that in the solution where the motor assembly is completely inserted into the fan blades, thereby reducing the length of the fan blades in the axial direction. The reduction in the axial length of the fan blades shortens the entire fan blade rotation force arm, thereby reducing the rotational torque of the fan blades. The rotational torque of the fan blades is reduced, and the fan blades rotate faster under the same output environment of the motor assembly. The reduction in the rotational torque of the fan blades will reduce the abnormal centrifugal force caused by the imbalance of the fan blades, making the rotation of the fan blades more stable, reducing the probability of abnormal vibration of the fan blades, and reducing the rotation noise of the fan blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0031] Figure 1 This is a schematic diagram of the overall structure of a fan assembly according to a specific embodiment of the present application;

[0032] Figure 2 This is a schematic cross-sectional view of a fan assembly according to a specific embodiment of the present application;

[0033] Figure 3 This is an exploded schematic diagram of a fan assembly according to a specific embodiment of the present application;

[0034] Figure 4 This is a schematic structural diagram of a motor housing according to a specific embodiment of the present application.

[0035] Description of the drawings: 1. Fan casing; 11. Stationary blades; 111. Guide serrations; 2. Assembly seat; 21. Connecting tube; 22. Connecting ring; 23. Hollow tube; 24. First air outlet; 3. Motor assembly; 31. Motor rotor; 311. Motor casing; 312. Magnetic ring; 313. Rotating shaft; 32. Motor stator; 321. Coil; 322. Iron core; 33. First bearing; 34. Second bearing; 4. Fan blades; 41. Hub; 411. Reinforcement ribs; 42. Moving blades; 421. Trailing edge serrations; 43. Connecting shaft column. DETAILED DESCRIPTION

[0036] To facilitate understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more elements can be interposed therebetween. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more elements can be interposed therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0037] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art in the technical field of this utility model. The terms used in this specification and in the description of this utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" as used in this specification includes any and all combinations of one or more of the relevant listed items.

[0038] Example 1

[0039] See also Figure 1 and Figure 2 , Figure 1 Schematic diagram of the overall structure of the fan assembly of this embodiment; Figure 2 Schematic cross-sectional view of the fan assembly of this embodiment.

[0040] like Figure 1 and Figure 2 As shown, a fan assembly includes: a fan housing 1, an assembly base 2, a motor assembly 3, and fan blades 4. The assembly base 2 is disposed within the fan housing 1 and is connected to the fan housing 1 via a plurality of stationary blades 11. One end of the motor assembly 3 is inserted into and connected to the assembly base 2. The other end of the motor assembly 3 is inserted into and connected to the fan blades 4.

[0041] In this embodiment, the fan housing 1 is constructed in a cylindrical shape, and a cylindrical air cavity is defined within the cylinder. However, the shape of the fan housing 1 is not limited to this. Depending on the specific application scenario, in some embodiments, the shape of the fan housing 1 can be: a triangle, a quadrilateral, a pentagon, other polygons, or other regular shapes. The external structure of the fan housing 1 can be determined according to the needs of the specific application scenario and is not limited to the specific embodiment.

[0042] One end of the mounting base 2 is disposed within the fan housing 1, and the other end of the mounting base 2 extends outside the fan housing 1. However, the positional relationship between the mounting base 2 and the fan housing 1 is not limited thereto. Depending on the specific application scenario, in some embodiments, the entire mounting base 2 is disposed within the fan housing 1. The positional relationship between the mounting base 2 and the fan housing 1 can be determined based on the needs of the specific application scenario and is not limited to the specific embodiment.

[0043] In this embodiment, the number of stator blades 11 is 7. However, the number of stator blades 11 is not limited to this. Depending on the specific application scenario, the number of stator blades 11 can be 2, 3, 4, 5, 6, 8, or more. The number of stator blades 11 can be determined based on the needs of the specific application scenario and is not limited to the specific embodiment.

[0044] In this embodiment, the motor assembly 3 can be (but not limited to): a single-phase motor, a two-phase motor or a three-phase motor.

[0045] The fan blades 4 can be (but not limited to) axial flow fans or diagonal flow fans in terms of their structure. In specific applications, the fan blades 4 can be selected according to the needs of the specific application scenario, which is not limited here.

[0046] In some embodiments, the motor assembly 3 is a three-phase motor, which has a higher rotation speed, thereby increasing the air output rate and air output volume of the fan assembly.

[0047] In some embodiments, the motor assembly 3 is powered by batteries, and the power supply batteries of the motor assembly 3 can be two, three, four or more batteries connected in series.

[0048] In some embodiments, the rated operating voltage of the motor assembly 3 is 6-8.4 V or 9-12.6 V. When the rated operating voltage of the motor assembly 3 is 6-8.4 V, the motor assembly 3 is powered by two batteries connected in series. Within this rated operating voltage range, the rated operating current of the motor assembly 3 is 0.1-2.9 A, the rated power of the motor assembly 3 is 0.6-25 W, and the speed of the motor assembly 3 is 14,000-46,000 rpm.

[0049] When the rated operating voltage of the motor assembly 3 is 9-12.6V, the motor assembly 3 is powered by three batteries connected in series. Within this rated operating voltage range, the rated operating current corresponding to the motor assembly 3 is 0.08-2.7A, the rated power corresponding to the motor assembly 3 is 0.7-33W, and the speed of the motor assembly 3 is 14000-48000 rpm.

[0050] When the motor assembly 3 is a three-phase motor and is powered by a battery, the fan assembly not only has requirements on the rotation speed, but also the energy consumption of the fan assembly must be considered. By improving the assembly structure of the motor assembly 3 and the fan blades 4, the torque required for the fan blades 4 to rotate is reduced, and the kinetic energy required for the fan blades 4 to rotate is reduced. This reduces the energy consumption of the fan assembly and gives the fan assembly a longer endurance. At the same time, due to the reduction in torque, the rotational posture stability of the fan blades 4 can be made higher when rotating at high speed, reducing the probability of abnormal shaking of the fan assembly.

[0051] The high-speed rotating motor assembly 3 easily generates a large amount of heat energy inside the motor assembly 3 and the assembly seat 2. By introducing part of the high-pressure airflow generated by the fan blades into the first heat dissipation path, the motor assembly 3 and the assembly seat 2 are cooled, making the working state of the three-phase motor more stable.

[0052] In the above embodiment, one end of the motor assembly 3 is inserted into the assembly seat 2, and the other end of the motor assembly 3 is inserted into the fan blades 4. This structure makes the area covered by the fan blades 4 on the motor assembly 3 smaller than that in the solution in which the motor assembly 3 is completely inserted into the fan blades 4, thereby reducing the length of the fan blades 4 in the axial direction. The reduction in the axial length of the fan blades 4 shortens the entire fan blade 4 rotation force arm, thereby reducing the rotational torque of the fan blades 4. The rotational torque of the fan blades 4 is reduced, and the fan blades 4 rotate faster under the same output environment of the motor assembly 3. The reduction in the rotational torque of the fan blades 4 will reduce the abnormal centrifugal force caused by the imbalance of the fan blades 4, making the rotation of the fan blades 4 more stable, reducing the probability of abnormal vibration of the fan blades 4, and reducing the rotation noise of the fan blades 4.

[0053] In some embodiments, a connecting shaft column 43 and multiple reinforcing ribs 411 are provided in the fan blade 4, and the multiple reinforcing ribs 411 are arranged around the connecting shaft column 43. The motor assembly 3 abuts against the connecting shaft column 43 and / or the multiple reinforcing ribs 411 to reduce the rotational torque of the fan blade 4.

[0054] The fan blades 4 include a hub 41 and a plurality of moving blades 42. The moving blades 42 are spaced apart on the surface of the hub 41. The hub 41 is hollow inside, and a connecting shaft 43 is arranged at the center of the hub 41.

[0055] See also Figure 3 , Figure 3 Schematic diagram of the exploded view of the fan assembly of this embodiment.

[0056] like Figure 3As shown, in some embodiments, the assembly base 2 includes: a connecting cylinder 21, a connecting ring 22, and a hollow tube 23. The connecting cylinder 21 is connected to the fan housing 1 via a plurality of stationary blades 11. One end of the motor assembly 3 is inserted into the connecting cylinder 21, and a first assembly gap is defined between the connecting cylinder 21 and the motor assembly 3. The connecting ring 22 is disposed within the connecting cylinder 21, the hollow tube 23 is connected to the connecting ring 22, and the motor assembly 3 is connected to the hollow tube 23.

[0057] The motor assembly 3 includes a motor stator 32 and a motor rotor 31. The motor stator 32 is connected to the assembly base 2. The motor rotor 31 is sleeved on the motor stator 32, and one end of the motor rotor 31 is inserted into the assembly base 2. The motor stator 32 includes an iron core 322 and a plurality of coils 321 wound around the iron core 322.

[0058] The motor stator 32 includes an iron core 322 and a plurality of coils 321 wound around the iron core 322. The iron core 322 is sleeved on the hollow tube 23.

[0059] The motor rotor 31 includes: a rotating shaft 313, a magnetic ring 312 and a motor housing 311. One end of the rotating shaft 313 is inserted into the hollow tube 23 and fixed by connecting with the first bearing 33 and the second bearing 34. The other end of the rotating shaft 313 is connected to the connecting shaft column 43 of the fan blade 4. The motor stator 32 is sleeved on the hollow tube 23 and has an interference fit with the hollow tube 23. The magnetic ring 312 is sleeved on the motor stator 32, and the motor housing 311 is sleeved on the magnetic ring 312. The magnetic ring 312 and the motor stator 32 are magnetically coupled, and the motor housing 311 is interference fit with the magnetic ring 312. The end of the motor housing 311 facing the fan blade 4 is connected to the rotating shaft 313 by an interference fit.

[0060] One end of the motor housing 311 in the motor assembly 3 is inserted into the assembly seat 2, and the other end is inserted into the hub 41 of the fan blade 4. The end of the motor housing 311 inserted into the fan blade 4 abuts against the connecting shaft 43 and / or multiple reinforcing ribs 411.

[0061] In this embodiment, when the motor assembly 3 is working, the motor stator 32 first performs electromagnetic conversion, driving the motor housing 311 with the magnetic ring 312 to rotate; then the motor housing 311 drives the rotating shaft 313 to rotate; finally, the rotating shaft 313 drives the fan blades 4 to rotate. One end of the motor housing 311 inserted into the fan blades 4 abuts against the connecting shaft column 43 and / or multiple reinforcing ribs 411. When the motor housing 311 rotates, friction is generated between the connecting shaft column 43 and / or multiple reinforcing ribs 411. When the motor housing 311 rotates at the same frequency as the fan blades 4, this friction is converted into the rotation driving force of the fan blades 4, which is equivalent to increasing the radial contact area between the rotating shaft 313 and the fan blades 4, making the rotation of the fan blades 4 more stable.

[0062] In some embodiments, the hub 41 of the fan blade 4 is configured to be conical, truncated cone, hemispherical, or bullet-shaped. This structure causes the force arms between different parts of the hub 41 and the rotating shaft 313 to be of different sizes when the fan blade 4 rotates. The position of the hub 41 where the motor housing 311 is inserted at one end has the largest torque, and the corresponding torque is also larger. The torques at different positions of the hub 41 are different, and excessive torque differences will cause the fan blade 4 to rotate unstably. The end of the motor housing 311 inserted into the fan blade 4 abuts against the connecting shaft 43 and / or multiple reinforcing ribs 411, which is equivalent to reducing the torque at the end of the hub 41, reducing the torque gap at different positions of the hub 41, and making the fan blade 4 rotate more stably.

[0063] In some embodiments, when the motor housing 311 abuts against the reinforcing rib 411 , the motor housing 311 only abuts against a portion of the structure of the reinforcing rib 411 .

[0064] In some embodiments, the length of the motor assembly 3 inserted into the assembly seat 2 is greater than the length of the motor assembly 3 inserted into the fan blade 4 .

[0065] The length of the motor assembly 3 inserted into the mounting base 2 is greater than the length of the motor assembly 3 inserted into the fan blades 4. This structure maintains the axial length of the fan blades 4 within the optimal range, maximizing the speed of the fan blades 4 under the same output conditions, making the fan blades 4 rotate more stably and with less noise.

[0066] In some embodiments, the outer diameter of the mounting base 2 is the same as the maximum outer diameter of the hub 41 of the fan blade 4. The maximum outer diameter of the hub 41 is generally located at the end of the hub 41 near the connecting tube 21. The outer diameter of the mounting base 2 is the same as the maximum outer diameter of the hub 41, which can minimize the wind resistance coefficient inside the fan housing 1 and improve the air output efficiency of the fan assembly.

[0067] See also Figure 4 , Figure 4 Schematic diagram of the structure of the motor casing of this embodiment.

[0068] like Figure 4 As shown, in some embodiments, a plurality of stationary blades 11 are formed with guide teeth 111 at one end facing the fan blade 4 .

[0069] In some embodiments, the guide serrations 111 are composed of alternating V-shaped notches and V-shaped tooth marks. In some embodiments, to reduce aerodynamic noise of the guide serrations 111, the intersections of the V-shaped notches are smoothed, and the apex of the V-shaped tooth marks is also smoothed.

[0070] In the above embodiment, a plurality of stator blades 11 are disposed between the fan housing 1 and the assembly seat 2, and each stator blade 11 has a guide tooth 111 formed on one end facing the fan blade 4. The airflow flowing out of the fan blade 4 has rotational potential energy, and airflow with rotational potential energy will form vortices. The guide teeth 111 are disposed on the stator blade 11. When the guide teeth 111 come into contact with the vortex, the larger vortex is broken up into multiple smaller vortices. When the smaller vortices collide with the stator blade 11, they have less rotational potential energy, and the aerodynamic noise generated by the collision is significantly reduced. At the same time, the stator blade 11 is statically disposed to intercept and guide the airflow. When the airflow comes into contact with the guide tooth 111, part of the airflow is intercepted and guided, while part of the airflow flows through the gap in the guide tooth 111 to the next stator blade 11. Because this part of the airflow has a longer movement space, the position where it collides with the next stator blade 11 is located behind the guide tooth 111 of the stator blade 11. The guide serrations 111 can move the collision position of part of the airflow with the stationary blades 11 backward, dispersing the total potential energy of the collision contact at the same position, and further reducing the aerodynamic noise of the fan assembly.

[0071] In some embodiments, a plurality of moving blades 42 are provided on the fan blade 4 , and a trailing edge serration 421 is provided on one end of the plurality of moving blades 42 facing the assembly seat 2 .

[0072] In this embodiment, the number of movable blades 42 is 9. However, the number of movable blades 42 is not limited to this. Depending on the specific application scenario, the number of movable blades 42 can be 2, 3, 4, 5, 6, 8, or more. The number of movable blades 42 can be determined based on the needs of the specific application scenario and is not limited to the specific embodiment.

[0073] The trailing edge serrations 421 are composed of alternating V-shaped notches and V-shaped tooth marks. In some embodiments, to reduce aerodynamic noise of the trailing edge serrations 421, the intersections of the V-shaped notches are smoothed, and the apex of the V-shaped tooth marks is also smoothed.

[0074] When the fan blade 4 rotates, a vortex is generated at the trailing edge of the blade. A trailing edge serration 421 is provided on the moving blade 42. When the trailing edge serration 421 comes into contact with the vortex, the larger vortex is broken up into multiple smaller vortices, and the aerodynamic noise formed by the smaller vortices is greatly reduced.

[0075] When the trailing edge serrations 421 are provided on the moving blades 42 and the guide serrations 111 are provided on the stationary blades 11 at the same time, the guide serrations 111 can break up and decompose the outflowing vortex, and the guide serrations 111 on the stationary blades 11 further decompose the broken up and decomposed vortex. The two breaking up and decomposition processes miniaturize the vortex inside the fan assembly and reduce the aerodynamic noise of the fan assembly to the greatest extent.

[0076] In some embodiments, each of the multiple stationary blades 11 is bent and extended along the inner surface of the fan casing 1, and the multiple moving blades 42 are bent and extended along the surface of the hub 41 of the fan blade 4, and the bending direction of the multiple stationary blades 11 is opposite to the rotation direction of the multiple moving blades 42.

[0077] In this embodiment, the bending direction of the stationary blade 11 is opposite to the rotational direction of the moving blade 42, which means that the bending direction of the stationary blade 11 and the rotational direction of the moving blade 42 are opposite to each other, and is not limited to the specific embodiment in which the bending direction of the stationary blade 11 is 180 degrees to the rotational direction of the moving blade 42. In some embodiments, when the bending extension line of the stationary blade 11 forms an obtuse angle with the rotational direction of the moving blade 42, it is also within the scope of the definition of "opposite" in this embodiment.

[0078] The bending direction of the static blade 11 is opposite to the rotation direction of the moving blade 42. When the moving blade 42 rotates, it will drive the airflow to rotate in the same direction. At this time, the bending direction of the static blade 11 is opposite to the rotation direction of the airflow. When the airflow rotates, it contacts and collides with the curved part of the static blade 11. Due to the opposite directions, the angle between the airflow and the curved part of the static blade 11 is greater than 90 degrees. The airflow contacts the static blade 11 at a larger angle, which can reduce the kinetic energy loss of the airflow contacting the static blade 11. During the contact process at a larger angle, the static blade 11 has an obvious guiding effect on the airflow, with small energy loss, which greatly improves the air outlet efficiency.

[0079] In some embodiments, the tooth marks of the guide teeth 111 are tilted. The guide teeth 111 are arranged between the fan housing 1 and the assembly seat 2. Therefore, the tooth marks of the guide teeth 111 can be tilted from the fan housing 1 to the assembly seat 2, and can also be tilted from the assembly seat 2 to the fan housing 1.

[0080] In some embodiments, the tooth marks of the trailing edge serrations 421 are tilted. The trailing edge serrations 421 are disposed between the fan housing 1 and the assembly seat 2. Therefore, the tooth marks of the trailing edge serrations 421 can tilt from the fan housing 1 toward the assembly seat 2, and can also tilt from the assembly seat 2 toward the fan housing 1.

[0081] In some embodiments, the tooth marks of the guide serrations 111 are arranged at an inclination, and the tooth marks of the trailing edge serrations 421 are also arranged at an inclination.

[0082] In some embodiments, there is a gap between the inner side wall of the fan blade 4 and the side wall of the portion where the motor rotor 31 is inserted into the fan blade.

[0083] In some embodiments, the motor rotor 31 includes: a magnetic ring 312 and a motor housing 311, the magnetic ring 312 is mounted on the motor stator 32, and the motor housing 311 is mounted on the magnetic ring 312. The motor housing 311 has multiple air inlet openings at one end facing the fan blades 4, and the multiple air inlet openings are symmetrically arranged in pairs.

[0084] Specifically, a gap is formed between the motor housing 311 and the sidewalls of the fan blades 4. This gap allows airflow within the fan housing 1 to pass through the multiple air inlet openings and enter the interior of the motor assembly 3, thereby cooling the motor assembly 3 and maintaining the internal temperature of the motor assembly 3 at a suitable level, thereby extending the service life of the motor assembly 3. The multiple air inlet openings are arranged symmetrically in pairs, which can evenly distribute the mass of the motor housing 311 and improve the rotational stability of the motor housing 311.

[0085] It should be noted that any implementation in this embodiment can be implemented independently or in combination with one or more other implementations. When implemented in combination, the combination should not be limited to the combination listed in this embodiment.

[0086] Example 2

[0087] A blowing device includes the fan assembly in Example 1, wherein the fan assembly serves as a core module component for assembling the blowing device.

[0088] It should be noted that the blowing device in this embodiment includes (but is not limited to): bladeless fans, desktop fans, floor fans, ball fans, neck fans, handheld fans, industrial fans, air conditioners, hair dryers, and other products that require air circulation. The fan assembly in Example 1 is assembled inside the housing of the above products.

[0089] The fan blades of the fan assembly of the blowing device in the present embodiment rotate under the drive of the motor assembly, and the rotation of the fan blades thereby pushes the airflow in the fan housing to move in a directional manner. Airflow is a fluid, and the unique flow characteristics of a fluid can cause the airflow to flow to any airflow channel connected to the external environment. There is an air inlet gap between the fan blades and the assembly seat, and there is a first assembly gap between the motor assembly and the assembly seat, and a first air outlet is provided on the assembly seat. The air inlet gap, the first assembly gap, and the first air outlet form a complete airflow channel leading to the external environment. The airflow flows along the first heat dissipation path formed by the air inlet gap, the first assembly gap, and the first air outlet, and will take away the heat generated by the operation of the motor assembly, cool the motor assembly, and play a role in air cooling.

[0090] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of this application. However, the present application can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments do not serve as additional limitations on the content of this application. The purpose of providing these embodiments is to make the understanding of the disclosure of this application more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all considered to be within the scope of the description of this utility model; further, it is obvious to those skilled in the art that improvements or changes can be made based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A fan assembly, characterized in that: include: fan housing; An assembly seat, the assembly seat is arranged in the fan housing, and the assembly seat is connected to the fan housing through a plurality of stationary blades; A motor assembly, one end of which is inserted into the assembly seat and connected to the assembly seat; The other end of the motor assembly is inserted into the fan blade and connected to the fan blade.

2. The fan assembly according to claim 1, wherein: A connecting shaft and a plurality of reinforcing ribs are provided in the fan blades, the plurality of reinforcing ribs are arranged around the connecting shaft, the motor assembly abuts against the connecting shaft and / or the plurality of reinforcing ribs to reduce the rotational torque of the fan blades; and / or, The motor assembly is a three-phase motor; and / or, The motor assembly is powered by a battery.

3. The fan assembly according to claim 2, wherein: The length of the motor assembly inserted into the assembly seat is greater than the length of the motor assembly inserted into the fan blade; and / or, The outer diameter of the assembly seat is the same as the maximum outer diameter of the hub of the fan blade; and / or, The rated operating voltage of the motor assembly is 6-8.4V or 9-12.6V; and / or, The rated operating current of the motor assembly is 0.1-2.9A or 0.08-2.7A; and / or, The rated power of the motor assembly is 0.6-25W or 0.7-33W; and / or, The rotation speed of the motor assembly is 14,000-48,000 rpm.

4. The fan assembly according to claim 1, wherein: The plurality of stationary blades are formed with guide serrations at one end facing the fan blade; and / or, The fan blades are provided with a plurality of moving blades, and one end of the plurality of moving blades facing the assembly seat is provided with trailing edge serrations.

5. The fan assembly according to claim 4, wherein: Each of the plurality of stationary blades is bent and extended along the inner surface of the fan casing, and the plurality of moving blades are bent and extended along the hub surface of the fan blades, and the bending direction of the plurality of stationary blades is opposite to the rotation direction of the plurality of moving blades.

6. The fan assembly according to claim 4, wherein: The tooth marks of the guide teeth are arranged obliquely; and / or, The tooth marks of the trailing edge serrations are arranged obliquely.

7. The fan assembly according to claim 1, wherein: The motor assembly includes: a motor stator and a motor rotor, the motor stator is connected to the assembly seat, the motor rotor is sleeved on the motor stator, and a partial structure of the motor rotor is inserted into the assembly seat, one end of the motor rotor is inserted into the assembly seat, and the other end of the motor rotor is inserted into the fan blade and connected to the fan blade.

8. The fan assembly according to claim 7, wherein: There is a gap between the inner side wall of the fan blade and the side wall of the motor rotor that is inserted into the fan blade.

9. The fan assembly according to claim 7 or 8, characterized in that: The motor rotor includes: a magnetic ring and a motor housing. The magnetic ring is sleeved on the motor stator, and the motor housing is sleeved on the magnetic ring. A plurality of air inlet openings are opened on one end of the motor housing facing the fan blades, and the plurality of air inlet openings are symmetrically arranged in pairs.

10. A blowing device, characterized in that: The blowing device is assembled with the fan assembly according to any one of claims 1 to 9.

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