Air outlet component

Abstract

The utility model provides an air outlet component which comprises a cylinder body, a plurality of first guide vanes and a plurality of second guide vanes. The cylinder body comprises an outer ring part, an inner ring part and a plurality of second guide vanes, the brake assembly and the outer ring part are coaxially arranged, the brake assembly comprises a fan and a motor, and the fan comprises a wheel shell and a plurality of blades arranged on the outer surface of the wheel shell at intervals; the flow guide part comprises an inner shell part, an outer shell part and a plurality of second guide vanes connected with the inner shell part and the outer shell part; wherein the difference between the maximum diameter of the wheel shell and the diameter of the inner ring part is smaller than 5 mm, the difference between the maximum diameter of the inner shell part and the diameter of the inner ring part is smaller than 5 mm, and the difference between the diameter of the inner wall of the outer shell part and the diameter of the inner wall of the outer ring part is smaller than 5 mm. The difference between the maximum diameter of the wheel shell, the diameter of the inner ring part and the maximum diameter of the inner shell part is small, wind can smoothly flow through the outer surface of the wheel shell, the outer surface of the inner ring part and the outer surface of the inner shell part, and the wind energy loss is small.

Description

Technical Field

[0001] The present application relates to the technical field of fans, and in particular to an air outlet component with good air outlet effect. Background Art

[0002] At present, the size of daily electronic products is getting smaller and smaller, and the requirements for the size and portability of fans are getting higher and higher. Although the conventional axial flow fan has a large air volume, the wind pressure of the axial flow fan is generally small. In addition, the blades of the axial flow fan usually extend along the hub spirally, so the airflow generated by the rotation of the fan blades is turbulent.

[0003] In order to reduce the turbulence generated by the fan blades and avoid ineffective air flow, multiple static blades are usually set around the front of the fan blades. After the turbulence passes through multiple static blades, the wind can be combed to a certain extent. However, the combing of the airflow by a single static blade is limited. In addition, the static blade will also cause some airflow to rebound, so the fan efficiency is low, so a solution is urgently needed. Summary of the invention

[0004] In view of this, the present application provides an air outlet component, including: a cylinder, including an outer ring part and an inner ring part; a brake assembly, coaxially arranged with the outer ring part, the brake assembly includes a fan and a motor, and the fan includes a wheel shell; a flow guide, including an inner shell part and an outer shell part. Through the structure of the outer ring part that passes through the front and back, the inner ring part coaxially arranged with the outer ring part, and the brake assembly, the axial change of the inner cavity diameter of the outer ring part is small, the maximum diameter of the wheel shell, the diameter of the inner ring part, and the maximum diameter of the inner shell part are small, and the wind can flow smoothly through the outer surface of the wheel shell, the outer surface of the inner ring part, and the outer surface of the inner shell part, and the wind energy loss is small.

[0005] The present application provides an air outlet component, comprising: a cylinder, comprising an outer ring portion, an inner ring portion, and a plurality of first guide vanes connecting the outer ring portion and the inner ring portion, the outer ring portion is through-connected front and back, air enters at the rear end, and air is discharged at the front end, and the diameter variation of the inner wall of the outer ring portion from back to front is less than 5 mm, the inner ring portion is coaxially arranged with the outer ring portion, and the inner ring portion extends radially unchanged from back to front; a brake assembly is coaxially arranged with the outer ring portion, the brake assembly is installed on the rear side of the inner ring portion, and is radially accommodated on the inner side of the outer ring portion, the brake assembly comprises a fan and a motor, and the fan It includes a wheel shell, and a plurality of blades arranged at intervals on the outer surface of the wheel shell, the motor is arranged on the radial inner side of the wheel shell; a guide member is coaxially arranged with the outer ring portion, the guide member is installed on the front side of the cylinder, the guide member includes an inner shell portion, an outer shell portion, and a plurality of second guide vanes connecting the inner shell portion and the outer shell portion; wherein the maximum diameter of the wheel shell and the diameter of the inner ring portion differ by less than 5 mm, the maximum diameter of the inner shell portion and the diameter of the inner ring portion differ by less than 5 mm, and the difference between the diameter of the inner wall of the outer shell portion and the diameter of the inner wall of the outer ring portion is less than 5 mm.

[0006] Furthermore, the diameter of the inner wall of the outer ring portion remains unchanged from back to front, the diameter of the inner wall of the outer ring portion remains unchanged from back to front, the diameter of the inner wall of the outer ring portion is equal to the diameter of the inner wall of the outer ring portion, and the diameter of the inner wall of the outer ring portion and the diameter of the inner wall of the outer ring portion are 30-36 mm; the wheel shell radially increases from back to front, and the inner shell portion radially decreases from back to front, and the maximum diameter of the wheel shell, the maximum diameter of the inner shell portion and the diameter of the inner ring portion are all in the range of 19.24-23.24 mm; the spacing between the front end of the wheel shell and the inner ring portion is 0.5-3 mm, and the spacing between the inner shell portion and the inner ring portion is 0.15-1 mm.

[0007] Furthermore, a base plate and a hollow shaft cylinder extending backward from the base plate are provided in the inner ring portion, and the motor includes a stator assembly and a rotor assembly, and the stator assembly, the rotor assembly and the fan are nested and fixed in the shaft cylinder; the rotor assembly includes a rotating shaft, a bearing and a magnetic ring, and the rotating shaft and the bearing are inserted and fixed in the shaft cylinder, the stator assembly is arranged on the radial outside of the shaft cylinder, the magnetic ring is arranged on the radial outside of the stator assembly, and the magnetic ring is fixed on the radial inside of the wheel shell.

[0008] Furthermore, the wheel shell includes a rear end portion, an enlarged portion that radially increases from the rear end portion to the front, and a smooth portion that remains radially unchanged from the enlarged portion to the front, the slope of the enlarged portion continuously decreases from the back to the front, the axial length of the enlarged portion is 12.9 to 16.9 mm, and the axial length of the smooth portion is 6.13 to 10.13 mm; the wheel shell also includes a fixing column located at the inner center, and the fixing column is used to fix the rotating shaft.

[0009] Furthermore, the inner shell portion radially decreases from the rear to the front, and the axial length of the inner shell portion is 13 to 17 mm; a column is provided at the inner center of the inner shell portion, and the column is inserted backward and fixed to the shaft cylinder.

[0010] Furthermore, each of the blades includes a blade root portion connected to the wheel shell, a blade top portion opposite to the blade root portion, a leading edge portion connecting the blade root portion and the blade top portion, and a trailing edge portion connecting the blade root portion and the blade top portion, the leading edge portion and the trailing edge portion being arranged opposite to each other; the front end of the blade root portion is arranged within a range of 1.5 mm before and after the connection between the enlarged portion and the smooth portion.

[0011] Furthermore, each of the first guide vanes includes a first section and a second section extending backward from the first section, the first section connects the inner ring portion and the outer ring portion at the same time, the second section is only connected to the outer ring portion, and the radial inner side of the second section is spaced from the wheel shell; from back to front, the blades extend in a clockwise spiral, the second section extends in a counterclockwise spiral, the first section extends straight, and the second guide vanes first extend in a clockwise spiral and then extend straight.

[0012] Furthermore, a distance between the rear end of the second section and the leading edge is 1.25 to 3.25 mm, and a distance between the front end of the first section and the rear end of the second guide vane is 0.4 to 1.4 mm.

[0013] Furthermore, the number of the blades is 9, the number of the first guide vanes is 7, and the number of the second guide vanes is 7. Multiple first guide vanes and multiple second guide vanes are radially spaced apart, and the axial projection of one first guide vane is located between the axial projections of two adjacent second guide vanes.

[0014] Furthermore, the ratio of the axial length of the blade to the axial length of the first guide vane is in the range of 7:8 to 11:12, and the ratio of the axial length of the first guide vane to the axial length of the second guide vane is in the range of 12:7 to 8:3.

[0015] Compared with the prior art, the air outlet component of the present application has the following beneficial effects: through the outer ring portion that passes through the front and back, and the inner ring portion and the brake assembly structure that are coaxially arranged with the outer ring portion, the axial change of the inner cavity diameter of the outer ring portion is small, and the maximum diameter of the wheel shell, the diameter of the inner ring portion and the maximum diameter of the inner shell portion are slightly different, so that the wind can flow smoothly through the outer surface of the wheel shell, the outer surface of the inner ring portion and the outer surface of the inner shell portion, and the wind energy loss is small, so that a large air volume can be achieved when the air outlet component is designed to be small and portable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional diagram of the portable fan of the present application;

[0017] Figure 2 is an exploded view of the portable fan of the present application;

[0018] Figure 3 is a cross-sectional view of the portable fan of the present application from the side;

[0019] Figure 4 is a side cross-sectional view of an air outlet component and a retracting component in the portable fan of the present application;

[0020] Figure 5 is a cross-sectional view of the portable fan of the present application from above;

[0021] Figure 6 is a cross-sectional view of the portable fan of the present application from the rear;

[0022] Figure 7 is another cross-sectional view of the portable fan of the present application from the rear;

[0023] Figure 8 It is a three-dimensional diagram of the blower in the portable fan of the present application. DETAILED DESCRIPTION

[0024] In order to facilitate a better understanding of the purpose, structure, features, and functions of the present application, the present application is further described in conjunction with the accompanying drawings and specific implementation methods.

[0025] It should be noted that when an element is considered to be “connected to” another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0026] In this application, descriptions such as “first”, “second”, etc. are only used for descriptive purposes and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0027] In the description of the present application, the terms "front", "back", "left", "right", "up", "down", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0028] In one embodiment, Figure 1 As shown, a portable fan 1 is shown. In this embodiment, the portable fan 1 is a handheld fan, so the portable fan 1 includes a handheld part (not numbered, the same below), a circuit board and a battery (not numbered, the same below) are arranged in the handheld part, the circuit board is used to control the circuit, and the battery is used to supply power. In other embodiments, the portable fan 1 can also be a clip fan, a desktop fan, a neck hanging fan or other portable fans.

[0029] In one embodiment, Figures 2 to 4 As shown, the portable fan includes a shell 1, an air outlet component and a contraction component 6. The shell 1 is through-connected from front to back, with air entering from the rear side and air exiting from the front side. The air outlet component is accommodated in the shell 1, and the air outlet component includes a cylinder 2 and a brake assembly accommodated in the cylinder 2, and the brake assembly includes a fan 3 and a motor 4, and the motor 4 drives the fan 3 to rotate to generate wind. The contraction component 6 is accommodated in the shell 1 and is arranged on the front side of the air outlet component. The contraction component 6 includes a contraction surface 61 located on the inner side, and the contraction surface 61 is arranged toward the air duct, and the contraction surface 61 radially shrinks from the back to the front. The contraction component 6 is arranged, and the contraction component 6 has the contraction surface 61 facing the air duct, and the contraction surface 61 radially shrinks from the back to the front, which is conducive to contracting and converging the airflow derived from the air outlet component, enhancing the wind pressure, and increasing the wind force.

[0030] In one embodiment, Figure 2 , Figure 3 , Figure 4 and Figure 6As shown, the cylinder 2 includes an outer ring portion 21, an inner ring portion 22, and a plurality of first guide vanes 23 connecting the outer ring portion 21 and the inner ring portion 22. The outer ring portion 21 is through-connected from front to back, with air entering from the rear end and air exiting from the front end. The diameter of the inner wall of the outer ring portion 21 changes from back to front by less than 5 mm. The inner ring portion 22 is coaxially arranged with the outer ring portion 21, and the inner ring portion 22 extends radially unchanged from back to front. The air outlet component also includes a guide member 5, which is axially arranged between the cylinder 2 and the contraction member 6, and the guide member 5 is coaxially arranged with the outer ring portion 21, and the guide member 5 is installed on the front side of the cylinder 2. The guide member 5 includes an outer shell portion 51, an inner shell portion 52, and a plurality of second guide vanes 53 connecting the outer shell portion 51 and the inner shell portion 52. The difference between the diameter of the inner wall of the outer shell portion 51 and the diameter of the inner wall of the outer ring portion 21 is less than 5 mm.

[0031] In this embodiment, if Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the diameter of the inner wall of the outer ring portion 21 does not change from back to front, and the diameter of the inner wall of the outer shell portion 51 does not change from back to front, and the diameter of the inner wall of the outer ring portion 21 is equal to the diameter of the inner wall of the outer shell portion 51. In this way, a ventilation duct that passes through the front and back can be formed to reduce wind energy loss. The diameter of the inner wall of the outer shell portion 51 and the diameter of the inner wall of the outer ring portion 21 are 30 to 36 mm. The diameters of the outer shell portion 51 and the outer ring portion 21 are small, and the overall size of the portable fan is small and easy to carry.

[0032] In one embodiment, Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the maximum diameter of the contraction surface 61 is equal to the diameter of the inner wall of the outer shell 51, and the minimum diameter of the contraction surface 61 is greater than the maximum diameter of the inner shell 52, and the minimum diameter of the contraction surface 61 is 21.05-25.05 mm. The inner shell 52 protrudes forward relative to the outer shell 51, and the front end of the inner shell 52 is located radially inward of the contraction surface 61, and the front end of the contraction surface 61 is located in front of the front end of the inner shell 52. There is a gap between the outer surface of the inner shell 52 and the contraction surface 61, forming an air duct for gathering and guiding wind. And the contraction surface 61 has the function of enhancing wind pressure, concentrating strong wind in the middle and then blowing it to the user, and the blowing effect is good.

[0033] In one embodiment, Figures 2 to 4As shown, a base plate 221 is provided in the inner ring portion 22, and a hollow shaft cylinder 222 extending backward from the base plate 221. The motor 4 includes a stator assembly 41 and a rotor assembly 42, and the stator assembly 41, the rotor assembly 42 and the fan 3 are nested and fixed in the shaft cylinder 222. The rotor assembly 42 includes a rotating shaft 421, a bearing 422 and a magnetic ring 423, and the rotating shaft 421 and the bearing 422 are inserted and fixed in the shaft cylinder 222, the stator assembly 41 is provided on the radial outer side of the shaft cylinder 222, the magnetic ring 423 is provided on the radial outer side of the stator assembly 41, and the magnetic ring 423 is fixed on the radial inner side of the wheel shell 31. The motor 4 is an outer rotor motor 4, in the form of an outer rotor, and the structure is more compact and reasonable.

[0034] In one embodiment, Figures 2 to 4 As shown, the axial length of the inner shell 52 is 13-17 mm, and the inner shell 52 radially decreases from the back to the front, and the outer surface is spherical, guiding the airflow to converge and flow forward. A column 521 is provided at the inner center of the inner shell 52, and the column 521 is inserted and fixed to the shaft cylinder 222 backward.

[0035] In one embodiment, Figures 2 to 5 As shown, the brake assembly is coaxially arranged with the outer ring portion 21, and the brake assembly is installed on the rear side of the inner ring portion 22 and is radially accommodated on the inner side of the outer ring portion 21. The brake assembly includes a fan 3 and a motor 4, and the fan 3 includes a wheel shell 31 and a plurality of blades 32 arranged at intervals on the outer surface of the wheel shell 31, and the motor 4 is arranged on the radial inner side of the wheel shell 31. The wheel shell 31 radially increases from back to front, the inner ring portion 22 extends radially unchanged from back to front, and the inner shell portion 52 radially decreases from back to front. The wheel shell 31 partially absorbs wind and guides the flow forward, and the inner shell portion 52 guides and gathers wind forward. The maximum diameter of the wheel shell 31 and the diameter of the inner ring portion 22 differ by less than 5 mm, and the maximum diameter of the inner shell portion 52 and the diameter of the inner ring portion 22 differ by less than 5 mm. The maximum diameter of the wheel shell 31, the maximum diameter of the inner shell portion 52 and the diameter of the inner ring portion 22 are all in the range of 19.24 to 23.24 mm. That is to say, the maximum diameter of the wheel shell 31, the diameter of the inner ring portion 22 and the maximum diameter of the inner shell portion 52 are slightly different from each other, and there is a smooth transition between the wheel shell 31, the inner ring portion 22 and the inner shell portion 52. The wind can flow smoothly through the outer surface of the wheel shell 31, the outer surface of the inner ring portion 22 and the outer surface of the inner shell portion 52, and the wind energy loss is small.

[0036] In this embodiment, if Figures 2 to 5As shown, the maximum diameter of the wheel shell 31, the maximum diameter of the inner shell 52 and the diameter of the inner ring 22 are equal, and the spacing between the front end of the wheel shell 31 and the inner ring 22 is 0.5-3mm, and the spacing between the inner shell 52 and the inner ring 22 is 0.15-1mm, so that the wind flow can smoothly flow from the outer surface of the wheel shell 31 to the outer surface of the inner ring 22, and then smoothly flow to the outer surface of the inner shell 52. In addition, the wind pressure is enhanced on the radially enlarged outer surface of the wheel shell 31, the wind loss is reduced on the radially unchanged outer surface of the inner ring 22, and the radially reduced inner shell 52 gathers wind and guides the flow, and the structural design is very reasonable.

[0037] In one embodiment, Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, the wheel shell 31 includes a rear end portion 311, an enlarged portion 312 that radially increases from the rear end portion 311 to the front, and a smooth portion 313 that remains unchanged radially from the enlarged portion 312 to the front. The slope of the enlarged portion 312 decreases continuously from the back to the front, the axial length of the enlarged portion 312 is 12.9 to 16.9 mm, and the axial length of the smooth portion 313 is 6.13 to 10.13 mm. The axial length of the enlarged portion 312 is relatively long, which is conducive to enhancing wind pressure; the smooth portion 313 also has a certain axial length, which is conducive to accommodating the motor 4 in the smooth portion 313. The wheel shell 31 also includes a fixing column 314 located at the inner center, and the fixing column 314 is used to fix the rotating shaft 421.

[0038] In one embodiment, Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, each blade 32 includes a blade root 321 connected to the wheel shell 31, a blade top 322 opposite to the blade root 321, a leading edge 323 connecting the blade root 321 and the blade top 322, and a trailing edge 324 connecting the blade root 321 and the blade top 322, and the leading edge 323 and the trailing edge 324 are arranged opposite to each other. The front end of the blade root 321 is arranged within the range of 1.5 mm before and after the connection between the enlarged portion 312 and the smooth portion 313. It can be known that the blade root 321 is mainly concentrated in the enlarged portion 312, and the blade 32 is also mainly concentrated in the enlarged portion 312, which is beneficial to the blade 32 to absorb and cut wind, and to enhance wind pressure.

[0039] In one embodiment, Figures 3 to 6As shown, each of the first guide vanes 23 includes a first section 231 and a second section 232 extending backward from the first section 231. The first section 231 connects the inner ring portion 22 and the outer ring portion 21 at the same time, and the second section 232 only connects the outer ring portion 21. The radial inner side of the second section 232 is spaced from the wheel shell 31. The distance between the rear end of the second section 232 and the leading edge portion 323 is 1.25 to 3.25 mm, and the distance between the front end of the first section 231 and the rear end of the second guide vane 53 is 0.4 to 1.4 mm. In other words, the axial distance between the blade 32 and the first guide vane 23 is small, and the axial distance between the first guide vane 23 and the second guide vane 53 is small, so that the wind can flow smoothly from multiple blades 32 to multiple first guide vanes 23, and then smoothly flow to multiple second guide vanes 53. In addition, there are gaps between the blade 32 and the first guide vane 23 and between the first guide vane 23 and the second guide vane 53, which are conducive to pressure relief and avoid backflow caused by excessive wind pressure, thereby reducing wind energy loss.

[0040] In one embodiment, Figures 3 to 6 As shown, from back to front, the blade 32 extends in a clockwise spiral, the second section 232 extends in a counterclockwise spiral, the first section 231 extends straight, and the second guide vane 53 first extends in a clockwise spiral and then extends straight. It can be seen that the airflow is guided multiple times from back to front, continuously combed and integrated, and finally flows straight forward, with little wind energy loss and less noise.

[0041] In one embodiment, Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, the number of the blades 32 is 9, the number of the first guide vanes 23 is 7, and the number of the second guide vanes 53 is 7. It should be understood that when the number of the stationary blades and the moving blades is similar, the stationary blades can better comb and integrate the airflow generated by the moving blades. The first guide vanes 23 and the second guide vanes 53 belong to the stationary blades, and the blades 32 belong to the moving blades. A plurality of the first guide vanes 23 and a plurality of the second guide vanes 53 are arranged at intervals in the radial direction, and the axial projection of one of the first guide vanes 23 is located between the axial projections of two adjacent second guide vanes 53. In this way, on the basis of combing the first guide vanes 23 and the second guide vanes 53 in the axial direction, the combing range is also expanded in the radial direction, which can further ensure the combing and integration effect of the stationary blades and achieve a better air outlet effect.

[0042] In one embodiment, Figures 3 to 5As shown, the ratio of the axial length of the blade 32 to the axial length of the first guide vane 23 is in the range of 7:8 to 11:12, and the ratio of the axial length of the first guide vane 23 to the axial length of the second guide vane 53 is in the range of 12:7 to 8:3. It can be seen that the axial length of the blade 32 is close to the axial length of the first guide vane 23, and the axial length of the first guide vane 23 is slightly longer than the axial length of the blade 32, combing the airflow generated by the blade 32 at the first time. The axial length of the first guide vane 23 is about twice the axial length of the second guide vane 53. After being combed by the first guide vane 23, the airflow tends to be stable and does not require too long flow guidance. Therefore, the axial length of the second guide vane 53 is shorter, which is conducive to reducing wind energy loss and having a good wind output effect.

[0043] In one embodiment, Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, it also includes a soft shell 7. The soft shell 7 is arranged in the shell 1, and the soft shell 7 is coated on the outside of the cylinder 2, the guide member 5 and the contraction member 6. The soft shell 7 includes an annular portion 71, and a front edging portion 72 and a rear edging portion 73 respectively connecting the front and rear ends of the annular portion 71. The annular portion 71 is coated on the radial outer side of the outer ring portion 21, the outer shell portion 51 and the contraction member 6. The front edging portion 72 is arranged at the front end of the contraction member 6, and the edge of the front edging portion 72 is flush with the front end of the contraction surface 61. The rear edging portion 73 is arranged at the rear end of the outer ring portion 21, and the edge of the rear edging portion 73 is flush with the rear end of the inner wall of the outer ring portion 21. The soft shell 7 has the function of buffering and shock absorption, and can better fix the cylinder 2, the guide member 5 and the contraction member 6 in the outer shell. A convex hull or a convex rib can be provided on the radial outer side of the soft shell 7 to strengthen the fixing effect. The radial inner side and / or radial outer side of the soft shell 7 may also be provided with depressions to enhance the buffering and shock absorbing effect.

[0044] In one embodiment, Figure 2 , Figure 3 and Figure 5As shown, it also includes a front guide 8, a rear guide 9 and an air inlet net 10. The front guide 8 is embedded in the front end of the shell 1, and the rear end of the front guide 8 is against the front edge portion 72. The front guide 8 includes a front guide surface 81 located on the inner side, and the front guide surface 81 radially increases from the back to the front, and the rear end of the front guide surface 81 is flush with the edge of the front edge portion 72. The rear guide 9 is embedded in the rear end of the shell 1, and the front end of the rear guide 9 and the rear edge portion 73 are clamped to fix the air inlet net 10. The rear guide 9 includes a rear guide surface 91 located on the inner side, and the front end of the rear guide surface 91 is flush with the edge of the rear edge portion 73. The wind converges from the radially reduced rear guide surface 91 into the shell 1, and the wind pressure, wind force and wind effect are enhanced in the shell 1, and finally expands and flows out from the radially expanded front guide surface 81, and the wind outlet effect is good. The air inlet net 10 is densely covered with a plurality of air inlet micropores (not numbered, the same below), and the air inlet micropores may be circular or hexagonal, and the aperture of the air inlet micropores is relatively small, which is conducive to isolating dust and impurities, and blowing out good air.

[0045] In one embodiment, Figures 2 to 5 As shown, the axial length of the shell 1 is 61-65 mm, and the axial length of the shell 1, the front guide 8 and the rear guide 9 after installation is 66-70 mm, that is, the overall axial length will not be very long, the overall volume is small, and it is easy to carry. The axial length of the soft shell 7 is 54.5-58.5 mm, and the axial length from the rear end of the outer ring part 21 to the front end of the contraction part 6 is 43.5-47.5 mm. The soft shell 7 can well protect the cylinder 2, the guide part 5 and the contraction part 6. The distance from the rear end of the wheel shell 31 to the rear end of the rear guide 9 is 3.8-7.8 mm, and the distance from the front end of the inner shell part 52 to the front end of the front guide 8 is 14.75-18.75 mm, which is conducive to gathering wind and enhancing wind force.

[0046] It should be understood that the "unchanged diameter" and "equal diameters" mentioned in the present application allow for a certain error range and do not require complete and exact equality.

[0047] The above detailed description is only an explanation of the preferred embodiment of the present application, and does not limit the patent scope of the present application. Therefore, all equivalent technical changes made by using the description and illustrations of this creation are included in the patent scope of this creation.

Claims

1. An air outlet component, characterized in that: include: The cylinder comprises an outer ring portion, an inner ring portion, and a plurality of first guide vanes connecting the outer ring portion and the inner ring portion, the outer ring portion is through-connected from front to back, air enters from the rear end, and air is discharged from the front end, and the diameter variation of the inner wall of the outer ring portion from back to front is less than 5 mm, the inner ring portion is coaxially arranged with the outer ring portion, and the inner ring portion extends radially unchanged from back to front; a brake assembly, which is coaxially arranged with the outer ring portion, the brake assembly is installed at the rear side of the inner ring portion and is radially received at the inner side of the outer ring portion, the brake assembly comprises a fan and a motor, the fan comprises a wheel shell, and a plurality of blades arranged at intervals on the outer surface of the wheel shell, and the motor is arranged at the radial inner side of the wheel shell; A flow guide member, coaxially arranged with the outer ring portion, installed on the front side of the cylinder, comprising an inner shell portion, an outer shell portion, and a plurality of second guide vanes connecting the inner shell portion and the outer shell portion; Among them, the maximum diameter of the wheel shell and the diameter of the inner ring part differ by less than 5mm, the maximum diameter of the inner shell part and the diameter of the inner ring part differ by less than 5mm, and the difference between the diameter of the inner wall of the outer shell part and the diameter of the inner wall of the outer ring part is less than 5mm.

2. The air outlet component according to claim 1, characterized in that: The diameter of the inner wall of the outer ring portion remains unchanged from back to front, the diameter of the inner wall of the outer ring portion remains unchanged from back to front, the diameter of the inner wall of the outer ring portion is equal to the diameter of the inner wall of the outer ring portion, and the diameter of the inner wall of the outer ring portion and the diameter of the inner wall of the outer ring portion are 30-36 mm; the wheel shell radially increases from back to front, and the inner shell portion radially decreases from back to front, and the maximum diameter of the wheel shell, the maximum diameter of the inner shell portion and the diameter of the inner ring portion are all in the range of 19.24-23.24 mm; the spacing between the front end of the wheel shell and the inner ring portion is 0.5-3 mm, and the spacing between the inner shell portion and the inner ring portion is 0.15-1 mm.

3. The air outlet component according to claim 1, characterized in that: The inner ring portion is provided with a base plate and a hollow shaft cylinder extending backward from the base plate, the motor includes a stator assembly and a rotor assembly, the stator assembly, the rotor assembly and the fan are nested and fixed on the shaft cylinder; the rotor assembly includes a rotating shaft, a bearing and a magnetic ring, the rotating shaft and the bearing are inserted and fixed in the shaft cylinder, the stator assembly is arranged on the radial outer side of the shaft cylinder, the magnetic ring is arranged on the radial outer side of the stator assembly, and the magnetic ring is fixed on the radial inner side of the wheel shell.

4. The air outlet component according to claim 3, characterized in that: The wheel shell includes a rear end portion, an enlarged portion that radially increases from the rear end portion to the front, and a smooth portion that remains radially unchanged from the enlarged portion to the front, the slope of the enlarged portion decreases continuously from the back to the front, the axial length of the enlarged portion is 12.9 to 16.9 mm, and the axial length of the smooth portion is 6.13 to 10.13 mm; the wheel shell also includes a fixing column located at the inner center, and the fixing column is used to fix the rotating shaft.

5. The air outlet component according to claim 4, characterized in that: The inner shell portion radially decreases from the back to the front, and the axial length of the inner shell portion is 13-17 mm; a column is provided at the inner center of the inner shell portion, and the column is inserted backward and fixed to the shaft cylinder.

6. The air outlet component according to claim 4, characterized in that: Each of the blades includes a blade root portion connected to the wheel shell, a blade top portion opposite to the blade root portion, a leading edge portion connecting the blade root portion and the blade top portion, and a trailing edge portion connecting the blade root portion and the blade top portion, the leading edge portion and the trailing edge portion being arranged opposite to each other; the front end of the blade root portion is arranged within a range of 1.5 mm before and after the connection between the enlarged portion and the smooth portion.

7. The air outlet component according to claim 6, characterized in that: Each of the first guide vanes includes a first section and a second section extending backward from the first section, the first section connects the inner ring portion and the outer ring portion at the same time, the second section only connects the outer ring portion, and the radial inner side of the second section is spaced from the wheel shell; from back to front, the blades extend in a clockwise spiral, the second section extends in a counterclockwise spiral, the first section extends straight, and the second guide vanes first extend in a clockwise spiral and then extend straight.

8. The air outlet component according to claim 7, characterized in that: The distance between the rear end of the second section and the leading edge is 1.25-3.25 mm, and the distance between the front end of the first section and the rear end of the second guide vane is 0.4-1.4 mm.

9. The air outlet component according to claim 7, characterized in that: The number of the blades is 9, the number of the first guide vanes is 7, and the number of the second guide vanes is 7. The plurality of the first guide vanes and the plurality of the second guide vanes are radially spaced apart, and the axial projection of one of the first guide vanes is located between the axial projections of two adjacent second guide vanes.

10. The air outlet component according to claim 1, characterized in that: The ratio of the axial length of the blade to the axial length of the first guide vane is in the range of 7:8 to 11:12, and the ratio of the axial length of the first guide vane to the axial length of the second guide vane is in the range of 12:7 to 8:3.

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