Air outlet structure and hair dryer

Abstract

The application discloses an air outlet structure and a hair dryer. The air outlet structure comprises a wind cover, an air outlet assembly and a driving assembly. The air outlet assembly is located in the wind cover. The air outlet assembly comprises a hub, a first fan blade group, a second fan blade group and a third fan blade group. The outside of the hub and the inside of the wind cover form an air outlet channel. The driving assembly drives the hub to rotate. The hub has a heat dissipation inlet and a heat dissipation outlet. The heat dissipation outlet is distributed at the connection between the third fan blade group and the hub. The heat dissipation outlet is in communication with the heat dissipation inlet and the air outlet channel. The hair dryer comprises the air outlet structure. In the application, the first fan blade group forms an air flow by rotating the air entering the air outlet channel from the air outlet, and the air flow is transported forward. The second fan blade group improves the air pressure of the air flow. The third fan blade group forms an air flow by the air entering the heat dissipation inlet, and the air flow is introduced into the air outlet channel. The noise of the air outlet structure is reduced, and the air volume and the air pressure of the air outlet structure are improved.

Description

Technical Field

[0001] This invention relates to the field of air outlet structure technology, and in particular to an air outlet structure and a hair dryer. Background Technology

[0002] In related technologies, the air duct needs to be set to a high rotation speed to meet the requirements of air volume and air pressure. When the air duct is applied to electrical appliances such as hair dryers, the electrical appliances generate a lot of noise and the air output speed is low, which is not conducive to use. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an air outlet structure that can increase airflow and reduce noise.

[0004] The present invention also proposes a hair dryer having the above-described air outlet structure.

[0005] An air outlet structure according to a first aspect embodiment of the present invention includes:

[0006] The fan cover has an internal air outlet channel, and the two ends of the fan cover are respectively provided with an air inlet and an air outlet, both of which are connected to the air outlet channel;

[0007] An air outlet assembly is located inside the air shroud. The air outlet assembly includes a hub, a first fan blade group, a second fan blade group, and a third fan blade group. The first fan blade group, the second fan blade group, and the third fan blade group are sequentially and spaced apart on the outer surface of the hub along the direction from the air inlet to the air outlet. The outer side of the hub and the inner side of the air shroud form the air outlet channel.

[0008] The drive assembly has a heat dissipation duct inside the hub. The drive assembly is located inside the heat dissipation duct and is used to drive the hub to rotate. The end of the hub facing the air inlet has a heat dissipation inlet, and the side of the hub facing the air outlet has a heat dissipation outlet. The heat dissipation outlet is distributed at the connection between the third fan blade group and the hub. The heat dissipation outlet is connected to the heat dissipation inlet and the air outlet.

[0009] The air outlet structure according to embodiments of the present invention has at least the following beneficial effects:

[0010] In the air outlet structure of this invention embodiment, the drive component provides power to the air outlet component. The first fan blade group rotates to form an airflow from the air entering the air outlet channel from the air outlet and transports it forward. The second fan blade group increases the air pressure of the airflow. The third fan blade group forms an airflow from the air entering from the heat dissipation inlet and guides it into the air outlet channel, increasing the air volume and air pressure of the airflow in the air outlet channel. Furthermore, when the airflow flows through the heat dissipation channel, it can dissipate heat from the drive component in the heat dissipation channel. Thus, while achieving the same air volume, the rotation speed of the air outlet component is lower, reducing the noise of the air outlet mechanism and improving the air volume and air pressure of the air outlet structure.

[0011] According to some embodiments of the present invention, the end of the hub facing the air outlet is provided with a first mounting boss and a second mounting boss. The first mounting boss protrudes towards the air cover relative to the second mounting boss. The second fan blade assembly is connected to the first mounting boss, and the third fan blade assembly is connected to the second mounting boss. The outer edge of the third fan blade assembly in the radial direction of the hub does not extend beyond the outer edge of the first mounting boss.

[0012] According to some embodiments of the present invention, the wheel hub includes a first mounting section and a second mounting section that are detachably connected, the first fan blade group is integrally connected to the first mounting section, the second fan blade group and the third fan blade group are both integrally connected to the second mounting section, and the first mounting boss and the second mounting boss are located in the second mounting section.

[0013] According to some embodiments of the present invention, a flow guiding assembly is further included, the flow guiding assembly being located inside the shroud, the flow guiding assembly including a fourth fan blade assembly and a mounting bracket, the mounting bracket being located at the end of the hub facing the air outlet, and the fourth fan blade assembly being connected to the outer wall of the mounting bracket.

[0014] According to some embodiments of the present invention, a fixing base is further included, the fixing base being located inside the wind hood, the driving assembly and the air outlet assembly being sleeved on the outside of the fixing base, and the interior of the fixing base being hollow.

[0015] According to some embodiments of the present invention, the drive assembly includes a stator and a rotor, the rotor being sleeved on the outer periphery of the stator, the stator including a base and a plurality of coils, the coils being distributed circumferentially along the base and connected to the outer wall of the base, a heat dissipation channel being formed between adjacent coils, the heat dissipation channel being connected to the heat dissipation inlet and the heat dissipation outlet.

[0016] According to some embodiments of the present invention, the stator further includes two wire frames and a plurality of iron cores, the plurality of iron cores being spaced apart on the outer periphery of the base, the two wire frames being disposed on both sides of the base and being connected to each other, the iron cores being enclosed within the wire frames, and the coils being wound around the outside of the wire frames.

[0017] According to some embodiments of the present invention, there is a gap between the stator and the rotor in the radial direction of the hub, the gap forming a heat dissipation channel, and the heat dissipation channel communicating with the heat dissipation inlet and the heat dissipation outlet.

[0018] According to some embodiments of the present invention, it further includes an end seat, one end of the wind cover is provided with an end cap, the end cap and the end seat are respectively located at both ends of the hub, one end of the hub abuts against the end cap, and the other end of the hub is connected to the end cap.

[0019] The hair dryer according to a second aspect embodiment of the present invention includes the air outlet structure of the first aspect embodiment.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 This is a schematic diagram of one embodiment of the air outlet structure of the present invention;

[0023] Figure 2 for Figure 1 A cross-sectional view of the center-exhaust air structure;

[0024] Figure 3 for Figure 1 Explosion diagram of the center-exhaust air structure;

[0025] Figure 4 This is a schematic diagram of the airflow direction;

[0026] Figure 5 This is a cross-sectional view of one embodiment of the driving component in this invention;

[0027] Figure 6 This is a schematic diagram of the structure of an embodiment of the air outlet component in this invention;

[0028] Figure 7 This is a schematic diagram of the structure of one embodiment of the second mounting section in this invention.

[0029] Figure label:

[0030] The components include: a fan cover 100, an air outlet duct 110, an air inlet 120, an air outlet 130, an end cap 140, a housing 150, a first housing 151, a second housing 152, and a support column 160; an air outlet assembly 200, a hub 210, a heat dissipation duct 211, a heat dissipation inlet 212, a heat dissipation outlet 213, a first mounting boss 214, a second mounting boss 215, a first mounting section 216, a mounting hole 2161, a second mounting section 217, a mounting column 2171, a first fan blade assembly 220, a first fan blade 221, and a second fan blade assembly 230. Second fan blade 231, third fan blade group 240, third fan blade 241; drive assembly 300, stator 310, base 311, multiple coils 312, wire frame 313, base 3131, frame 3132, second through slot 3133, iron core 314, first through slot 315, rotor 320, iron ring 321, magnetic ring 322, heat dissipation channel 330, heat dissipation air duct 340, bearing 350; flow guiding assembly 400, fourth fan blade group 410, fourth fan blade 411, mounting bracket 420, fixed base 500; end seat 600. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0033] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0035] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] Reference Figures 1 to 3 An embodiment of the present invention provides an air outlet structure, including a wind shroud 100, an air outlet assembly 200, and a drive assembly 300. The wind shroud 100 has an air outlet channel 110 inside. Air inlets 120 and outlets 130 are respectively provided at both ends of the wind shroud 100, and both air inlets 120 and outlets 130 are connected to the air outlet channel 110. External air enters the air outlet channel 110 through the air inlet 120, forms an airflow within the air outlet channel 110, and is then discharged from the air outlet 130. The air outlet assembly 200 is located inside the wind shroud 100 and includes a hub 210, a first blade assembly 220, and a second blade assembly. The first blade group 220, the second blade group 230, and the third blade group 240 are all used to generate airflow. The first blade group 220, the second blade group 230, and the third blade group 240 are distributed sequentially and spaced apart along the direction from the air inlet 120 to the air outlet 130, and are connected to the outer surface of the hub 210. There is a gap between the outer side of the hub 210 and the inner side of the wind cover 100, forming an air outlet channel 110. The first blade group 220, the second blade group 230, and the third blade group 240 are all located in the air outlet channel 110, and different blade groups can generate airflow in the air outlet channel 110.

[0037] The hub 210 is hollow inside, forming a heat dissipation duct 211. The drive assembly 300 is installed inside the heat dissipation duct 211 and is used to drive the hub 210 to rotate. When the hub 210 rotates, the first fan blade group 220, the second fan blade group 230, and the third fan blade group 240 rotate synchronously and generate airflow. In addition, the end of the hub 210 facing the air inlet 120 has a heat dissipation inlet 212, and the side of the hub 210 facing the air outlet 110 has a heat dissipation outlet 213. The heat dissipation outlet 213 is distributed at the connection between the third fan blade group 240 and the hub 210, and the heat dissipation outlet 213 is connected to the heat dissipation inlet 212 and the air outlet 110. Figure 4As shown, external air can enter the heat dissipation duct 211 through the heat dissipation inlet 212. Through the rotation of the third fan blade group 240, the air enters the air outlet duct 110 from the heat dissipation outlet 213, merges with the airflow formed by the first fan blade group 220 and the second fan blade group 230, and is discharged from the air outlet 130 together.

[0038] Therefore, in the air outlet structure of this embodiment, the drive component 300 provides power to the air outlet component 200. The first fan blade group 220 rotates to form an airflow from the air entering the air outlet channel 110 from the air outlet 130 and delivers it forward. The second fan blade group 230 increases the air pressure of the airflow. The third fan blade group 240 forms an airflow from the air entering from the heat dissipation inlet 212 and guides it into the air outlet channel 110, increasing the air volume and air pressure of the airflow in the air outlet channel 110. When the airflow flows through the heat dissipation duct 211, it can dissipate heat from the drive component 300 in the heat dissipation duct 211. Thus, while achieving the same air volume, the rotation speed of the air outlet component 200 is lower, reducing the noise of the air outlet mechanism and improving the air volume and air pressure of the air outlet structure.

[0039] It should be noted that the first fan blade group 220 includes multiple first fan blades 221, the second fan blade group 230 includes multiple second fan blades 231, and the third fan blade group 240 includes multiple third fan blades 241. The multiple first fan blades 221, multiple second fan blades 231, and multiple third fan blades 241 are all arranged at intervals along the circumference of the hub 210. In addition, the first fan blades 221 and second fan blades 231 can be selected as axial flow fan blades or diagonal flow fan blades so that the first fan blades 221 and second fan blades 231 can deliver air forward and increase the air pressure. The third fan blade 241 can be selected as a centrifugal fan blade. Through the rotation of the third fan blade 241, the airflow that initially flows along the air inlet 120 towards the air outlet 130 is turned at the heat dissipation outlet 213 under the guidance of the third fan blade 241, flows radially along the hub 210, and enters the air outlet duct 110 from the heat dissipation outlet 213.

[0040] Furthermore, since the hub 210 is located inside the shroud 100, the end of the shroud 100 near the air outlet 130 protrudes relative to the end of the hub 210 facing the air outlet 130. As a result, the airflow in the heat dissipation duct 211 can be introduced by the airflow formed by the rotation of the first fan blade group 220. That is, when the hub 210 drives the first fan blade group 220 to rotate, the air outside the shroud 100 simultaneously enters the air outlet duct 110 from the air inlet 120 and enters the heat dissipation duct 211 from the heat dissipation inlet 212, which helps to increase the wind speed.

[0041] like Figure 7As shown, the hub 210 has a first mounting boss 214 and a second mounting boss 215 at the end facing the air outlet 130. The first mounting boss 214 protrudes towards the air cover 100 relative to the second mounting boss 215. The second mounting boss 215 is connected to the end of the first mounting boss 214 facing the air outlet 130. The first fan blade assembly 220 is connected to the outer wall of the first mounting boss 214, and the third fan blade assembly 240 is connected to the outer wall of the second mounting boss 215. Since the first mounting boss 214 is higher than the second mounting boss 215, the airflow discharged from the heat dissipation outlet 213 is driven to change direction by the airflow in the air outlet channel 110 and flows together along the axial direction of the hub 210, which facilitates the guidance of centrifugal airflow.

[0042] Furthermore, in one embodiment, the outer edge of the third blade assembly 240 does not exceed the outer edge of the first mounting boss 214. Here, the outer edge refers to the outer edge of the third blade assembly 240 and the first mounting boss 214 in the radial direction of the hub 210. On the one hand, after the airflow formed by the third blade assembly 240 enters the air outlet 110, it is entirely guided by the airflow within the air outlet 110 and flows towards the air outlet 130, reducing turbulence and noise within the air outlet 110 and increasing wind pressure. On the other hand, it reduces the obstruction between the third blade assembly 240 and the first blade assembly 220 and the second blade assembly 230, preventing the third blade assembly 240 from affecting the airflow of the first blade assembly 220 and the second blade assembly 230, thereby reducing wind pressure.

[0043] In addition, such as Figure 6 As shown, the heat dissipation outlet 213 is located between the adjacent third fan blades 241. When the hub 210 rotates, the airflow at the heat dissipation outlet 213 is thrown into the air outlet duct 110 by the third fan blades 241.

[0044] like Figure 3 As shown, the hub 210 includes a detachably connected first mounting section 216 and a second mounting section 217. A first fan blade assembly 220 is integrally connected to the first mounting section 216, and the second fan blade assembly 230 and the third fan blade assembly 240 are both integrally connected to the second mounting section 217. A first mounting boss 214 and a second mounting boss 215 are both located on the second mounting section 217. This design facilitates processing and reduces processing costs. Furthermore, since the fan blade assembly is integrally connected to either the first mounting section 216 or the second mounting section 217, no assembly is required between the fan blade assembly and the hub 210, resulting in high assembly convenience. It should be noted that in other embodiments, the hub 210 can also be divided into three sections, i.e., the first fan blade assembly 220, the second fan blade assembly 230, and the third fan blade assembly 240 are each mounted on one section of the hub 210 and assembled to form the air outlet assembly 200.

[0045] Furthermore, the first mounting section 216 and the second mounting section 217 are interlocked along the axial direction of the hub 210 to achieve assembly. Specifically, in one embodiment, the first mounting section 216 has multiple mounting holes 2161 on the side facing the second mounting section 217, and the multiple mounting holes 2161 are distributed circumferentially around the first mounting section 216. The second mounting section 217 has multiple mounting posts 2171 protruding from the side facing the first mounting section 216, and the multiple mounting posts 2171 are distributed circumferentially around the second mounting section 217. The number and shape of the mounting posts 2171 match those of the mounting holes 2161. After the mounting posts 2171 are inserted into the mounting holes 2161, the first mounting section 216 and the second mounting section 217 are docked and assembled, and they are mutually limited in the circumferential direction of the hub 210, so that they can rotate synchronously under the drive of the drive assembly 300.

[0046] like Figure 2 and Figure 4 As shown, the air outlet structure also includes a flow guide assembly 400, which is located inside the shroud 100. The flow guide assembly 400 includes a fourth fan blade group 410 and a mounting frame 420. The fourth fan blade group 410 is connected to the outer wall of the mounting frame 420, which is located at the end of the hub 210 facing the air outlet 130. Through the flow guide effect of the fourth fan blade group 410, the airflow in the air outlet channel 110 is discharged from the air outlet 130 along the axial direction of the hub 210. It should be noted that the fourth fan blade group 410 includes multiple fourth fan blades 411, which are distributed circumferentially along the mounting frame 420. The mounting frame 420 does not rotate with the hub 210. The flow guide assembly 400 is stationary when the hub 210 rotates. The fourth fan blade group 410 pressurizes and delivers airflow in the air outlet channel 110 along the axial direction of the hub 210.

[0047] In addition, such as Figure 2 As shown, the air outlet structure also includes a fixed base 500, which is located inside the shroud 100. The drive assembly 300 and the air outlet assembly 200 are both fitted onto the outside of the fixed base 500, and the interior of the fixed base 500 is hollow. When the hub 210 rotates, the first fan blade assembly 220 drives the air outside the shroud 100 into the shroud 100. Driven by the airflow inside the shroud 100, some air enters the interior of the fixed base 500 and is discharged from the end of the fixed base 500 near the air outlet 130, thereby increasing the airflow of the air outlet structure.

[0048] Specifically, the drive assembly 300 and the air guide assembly 400 are fitted outside the fixed base 500, and the air outlet assembly 200 is fitted outside the drive assembly 300. When the hub 210 rotates, the fixed base 500 and the air guide assembly 400 are stationary. Driven by the airflow in the air outlet channel 110, the air outside the hood 100 passively enters the fixed base 500. The airflow discharged from the fixed base 500 and the airflow discharged from the air outlet 130 converge, which can improve the airflow of the air outlet structure.

[0049] The drive assembly 300 can be a rotary motor, electric motor, or other power component. To facilitate heat dissipation of the drive assembly 300 and ensure unobstructed airflow in the heat dissipation duct 211, such as... Figure 5 As shown, in one embodiment of the present invention, the drive assembly 300 includes a stator 310 and a rotor 320. The rotor 320 is sleeved on the outer periphery of the stator 310. The stator 310 includes a base 311 and a plurality of coils 312. The coils 312 are distributed at intervals along the circumference of the base 311 and connected to the outer wall of the base 311. A heat dissipation channel 330 is formed between adjacent coils 312. The heat dissipation channel 330 is connected to the heat dissipation inlet 212 and the heat dissipation outlet 213.

[0050] After the drive assembly 300 is energized, the coil 312 generates a magnetic field, which drives the stator 310 to rotate. The air outlet assembly 200 is sleeved on the outer surface of the rotor 320 and rotates with the rotor 320. Since there is a heat dissipation channel 330 between adjacent coils 312, the airflow entering the heat dissipation duct 211 from the heat dissipation inlet 212 passes through the heat dissipation channel 330 and is discharged from the heat dissipation outlet 213. Furthermore, since there is a heat dissipation channel 330 between adjacent coils 312, on the one hand, the overall space of the channel is relatively large, which facilitates the rapid passage of airflow. On the other hand, when the airflow passes through the heat dissipation channel 330, it can carry away the heat generated by the operation of the coil 312, thereby achieving heat dissipation and cooling of the drive assembly 300 and increasing the outlet temperature of the air outlet structure, which is beneficial to reducing the power of the heating element in the air outlet structure.

[0051] The rotor 320 includes an iron ring 321 and a magnetic ring 322. The iron ring 321 is fitted around the magnetic ring 322. The hub 210 is fitted around the iron ring 321 and tightly fitted with it. The magnetic ring 322 rotates under the influence of the magnetic field generated by the coil 312. The stator 310 includes two wire frames 313 and multiple iron cores 314. The multiple iron cores 314 are spaced apart on the outer periphery of the base 311. The two wire frames 313 are located on both sides of the base 311 and are connected to each other. The iron cores 314 are wrapped inside the wire frames 313 to prevent the iron cores 314 from being magnetized. The coil 312 is wound around the outside of the wire frames 313 to increase the magnetic field strength generated by the stator 310.

[0052] Specifically, the two wire frames 313 are joined together along the axial direction of the hub 210, facilitating the assembly of the wire frames 313 with the iron core 314 and enabling complete coverage of the iron core 314. For example... Figure 3 As shown, each wire frame 313 includes a base 3131 and multiple frames 3132 connected to the outer periphery of the base 3131. The frames 3132 are spaced apart, and a frame 3132 is inserted between adjacent iron cores 314. Each iron core 314 is covered by two opposing frames 3132. The interior of the frame 3132 is hollow. Each coil 312 is wound around the outer periphery of two adjacent frames 3132. A first through slot 315 is provided between adjacent iron cores 314, and a second through slot 3133 is provided on the outer side of the frame 3132. After the frame 3132 is inserted between adjacent iron cores, the first through slot 315 and the second through slot 3133 are connected, which facilitates the coil 312 to be wound into the frame 3132.

[0053] In addition, such as Figure 5 As shown, there is a gap between the stator 310 and the rotor 320 in the radial direction of the hub 210. This gap forms a heat dissipation air passage 340, which is connected to the heat dissipation inlet 212 and the heat dissipation outlet 213. The airflow in the heat dissipation air passage 211 passes through the heat dissipation air passage 340 and the heat dissipation channel 330 at the same time to increase the contact area between the airflow and the drive component 300. The drive component 300 has high heat dissipation efficiency, and the airflow can cool the stator 310 and the rotor 320 at the same time, which is also conducive to increasing the air volume.

[0054] like Figure 2 and Figure 3 As shown, the air outlet structure also includes an end seat 600. One end of the shroud 100 is provided with an end cap 140. The end cap 140 and the end seat 600 are respectively located at both ends of the hub 210. One end of the hub 210 abuts against the end cap 140, and the other end of the hub 210 is connected to the end cap 140, thereby fixing the hub 210 in the axial direction. By providing an end cap 140 at the end of the shroud 100, a structure for axial positioning of the hub 210 is provided, which facilitates the assembly of the hub 210 with the shroud 100 and the end seat 600.

[0055] Specifically, along the axial direction of the hub 210, the end cap 140, hub 210, mounting bracket 420, and end seat 600 are sequentially fitted onto the outer periphery of the fixed seat 500. The drive assembly 300 also includes two bearings 350, which are located on both sides of the hub 210. Specifically, one bearing 350 is installed between the wire frame 313 and the end cap 140. The inner side of this bearing 350 is the fixed side, and the outer side is the rotating side. The fixed side is fitted onto the fixed seat 500, and the hub 210 is fitted onto (the first mounting section 216). On the rotating side, the bearing 350 is axially limited by the wire frame 313 and the end cover 140 in the hub 210, with rotational freedom only on the rotating side. Another bearing 350 is installed between the wire frame 313 and the mounting bracket 420. The inner side of this bearing 350 is the fixed side, and the outer side is the rotating side. The fixed side is fitted onto the fixed seat 500, and the hub 210 (second mounting section 217) is fitted onto the rotating side. The bearing 350 is axially limited by the wire frame 313 and the mounting bracket 420 in the hub 210, with rotational freedom only on the rotating side. The end seat 600 is installed on the end of the mounting bracket 420 facing the air outlet 130 by means of threaded fastening, thereby achieving axial limitation of the hub 210, bearing 350, and drive assembly 300.

[0056] It should be noted that the stator 310, the fixed seat 500, the fixed side of the bearing 350, the mounting bracket 420, the fourth fan blade group 410, and the end seat 600 of the drive assembly 300 are all stationary components. After the drive assembly 300 is energized, the rotor 320 rotates, and the hub 210 connected to the rotating side of the bearing 350 rotates with the rotor 320, driving the first fan blade group 220, the second fan blade group 230, and the third fan blade group 240 to rotate synchronously. In addition, the bearing 350 near the air outlet 130 protrudes relative to the hub 210 on its end face facing the air outlet 130, creating an axial gap between the mounting bracket 420 and the hub 210, which facilitates the rotation of the hub 210 relative to the mounting bracket 420.

[0057] like Figure 1 and Figure 4As shown, the hood 100 includes an end cap 140 and a housing 150. The end cap 140 is connected to the end of the housing 150 near the air inlet 120. The air outlet assembly 200 and the drive assembly 300 are both located inside the housing 150. A support column 160 is connected between the end cap 140 and the housing 150. Multiple support columns 160 are provided and are distributed at intervals along the outer periphery of the end cap 140 to improve the structural strength of the hood 100 and ensure that the end cap 140 can provide a stable limiting function in the axial direction. The outer casing 150 includes a first casing 151 and a second casing 152, which are joined together to form the outer casing 150. The air guide component 400 is integrally connected to the second casing 152, which facilitates the assembly of the air guide component 400 into the wind shroud 100. The assembly is highly convenient, and dividing the outer casing 150 into two parts does not affect the assembly of the drive component 300 and the air outlet component 200 into the wind shroud 100, thus giving the air outlet structure a high degree of assembly convenience.

[0058] An embodiment of the present invention also provides a hair dryer, including the aforementioned air outlet structure, for increasing the air volume and air pressure of the hair dryer and reducing noise, effectively improving the performance of the hair dryer. It should be noted that the hair dryer may also be equipped with a heating component, which can be disposed within the air outlet channel 110. The heating component is used to heat the airflow. The hair dryer may also be equipped with a handle, which integrates multiple control panels or buttons to adjust parameters such as airflow speed and temperature for ease of use.

[0059] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. An air outlet structure, characterized by, The utility model relates to a fan, including: A wind cover has an air outlet channel inside, and the wind cover is provided with an air inlet and an air outlet at two ends respectively, the air inlet and the air outlet are communicated with the air outlet channel; An air outlet assembly is located in the wind cover, the air outlet assembly includes a hub, a first fan blade group, a second fan blade group and a third fan blade group, the first fan blade group, the second fan blade group and the third fan blade group are sequentially and spacedly connected to the outer surface of the hub in the direction from the air inlet to the air outlet, the outer side of the hub and the inner side of the wind cover form the air outlet channel; A driving assembly is located in the heat dissipation air duct inside the hub and is used to drive the hub to rotate, one end of the hub towards the air inlet is provided with a heat dissipation inlet, one side of the hub towards the air outlet channel is provided with a heat dissipation outlet, the heat dissipation outlet is distributed at the connection between the third fan blade group and the hub, the heat dissipation outlet is communicated with the heat dissipation inlet, the heat dissipation outlet and the air outlet channel, the driving assembly includes a stator and a rotor, the rotor is sleeved on the outer periphery of the stator, the stator includes a base and a plurality of coils, the coils are spacedly distributed along the circumference of the base and are connected to the outer wall of the base, the heat dissipation channels are formed between adjacent coils and are communicated with the heat dissipation inlet and the heat dissipation outlet, the stator and the rotor have a gap in the radial direction of the hub, the gap forms a heat dissipation air duct, and the heat dissipation air duct is communicated with the heat dissipation inlet and the heat dissipation outlet; An end seat is provided at one end of the wind cover, and an end cover is provided at the other end of the wind cover, the end cover and the end seat are located at two ends of the hub respectively, one end of the hub abuts against the end cover, and the other end of the hub is connected to the end cover.

2. The air outlet structure according to claim 1, characterized in that, One end of the hub towards the air outlet is provided with a first mounting boss and a second mounting boss, the first mounting boss is arranged protruding towards the wind cover relative to the second mounting boss, the second fan blade group is connected to the first mounting boss, and the third fan blade group is connected to the second mounting boss, and the outer edge of the third fan blade group in the radial direction of the hub does not exceed the outer edge of the first mounting boss.

3. The air outlet structure according to claim 2, characterized in that, The hub includes a first mounting section and a second mounting section connected detachably, the first fan blade group is integrally connected with the first mounting section, the second fan blade group and the third fan blade group are integrally connected with the second mounting section, and the first mounting boss and the second mounting boss are located in the second mounting section.

4. The air outlet structure according to claim 1, characterized in that, The utility model also includes a flow guide assembly, the flow guide assembly is located in the wind cover, and the flow guide assembly includes a fourth fan blade group and a mounting rack, the mounting rack is located at one end of the hub towards the air outlet, and the fourth fan blade group is connected to the outer wall of the mounting rack.

5. The air outlet structure according to claim 1, characterized in that, The utility model also includes a fixing seat, the driving assembly and the air outlet assembly are sleeved outside the fixing seat, and the inside of the fixing seat is hollow.

6. The air outlet structure according to claim 1, characterized in that, The stator further comprises two wire holders and a plurality of iron cores, the plurality of iron cores are distributed at intervals on the outer periphery of the base, the two wire holders are arranged on the two sides of the base and abut each other, the iron cores are wrapped in the wire holders, and the coil is arranged outside the wire holders.

7. A hair dryer characterized by The air outlet structure of any one of claims 1 to 6 is included.

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