High-speed fan assembly capable of preventing foreign matter from entering and high-speed fan

Abstract

The high-speed fan assembly comprises a fan blade base, a plurality of blades are evenly arranged on the outer surface of the fan blade base, each blade is divided into an air inlet end and an air outlet end according to the airflow passing direction, the blade end of the air inlet end is of a cutting edge type structure, and the blade end of the air outlet end of the fan blade base is of a hollow structure. In other words, the air inlet end of the blade is in a shape similar to a blade, so that hair or other foreign matters are wound and cut in the use process of the hair drier, the risk that the hair or other foreign matters are dragged by remaining hair and even scalp is avoided, and meanwhile, the foreign matters are prevented from being continuously sucked into a deeper position in the fan to damage the fan; the technical problems that after a traditional high-speed fan sucks hair or other foreign matter, the interior of the fan is damaged, the service life is shortened, and meanwhile the use experience is affected due to the fact that the hair is rolled in are solved, and the beneficial effects of preventing the foreign matter from entering the deep part of the fan to cause damage and improving the use experience are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of high speed fan of hair dryer especially relates to a high speed fan assembly and high speed fan of preventing foreign matter from entering. BACKGROUND

[0002] The high speed hair dryer is mainly composed of motor, fan system, heating system, air duct, intelligent control system, shell and other parts. When working, the motor drives the fan to rotate to generate strong wind power, air is sucked from the air inlet, passes through the heating element, and is concentrated and output through the air duct and nozzle. In order to realize the function of quickly drying hair, the wind power and suction power of some hair dryers are designed to be relatively strong. When the user dries the hair, if the distance from the hair is too close, the suction range of the air inlet is relatively concentrated, the hair is easy to be sucked into the air inlet, and the hair is easy to be wound by the impeller of the fan blade, resulting in poor use experience, even causing certain use process risk, and the hair or other foreign matters wound into the fan body also easily damage the fan and shorten the service life. SUMMARY

[0003] In order to overcome the defects and deficiencies of the prior art, the utility model provides a high speed fan assembly and high speed fan of preventing foreign matter from entering, which solves the technical problems that the traditional high speed fan is damaged by sucking in hair or other foreign matters, the service life is shortened, and the use experience is affected by the wound hair.

[0004] The utility model discloses a high speed fan assembly of preventing foreign matter from entering through the following technical scheme to realize the above-mentioned purpose, a high speed fan assembly of preventing foreign matter from entering, including fan blade base, the outer surface of fan blade base evenly is provided with a plurality of blades, the blade is divided into the air inlet end and the air outlet end according to the direction of airflow through, the blade end of air inlet end is the blade edge type structure.

[0005] As preferred, the blade edge type structure has a continuously undulating wave-shaped cutting edge.

[0006] As preferred, the thickness of the blade end of the blade edge type structure is not more than 0.3mm.

[0007] As preferred, the width of the blade is the length of the blade in the direction perpendicular to the outer surface of the fan blade base, the width of the blade gradually increases along the direction of airflow through, the relative points of adjacent blades are the corresponding points of adjacent blades in the plane perpendicular to the wind direction, the distance between the relative points of adjacent blades gradually increases along the direction of airflow through, and the cross-sectional area of the airflow channel gradually increases from the air inlet end of the fan blade to the air outlet end.

[0008] As preferred, the blade is airfoil-shaped or circular arc-shaped.

[0009] As preferably, the blade base comprises a cylindrical structure and a boss protruding from the end of the cylindrical structure, and the blade is arranged on the outer surface of the cylindrical structure.

[0010] As preferably, the boss has a shaft hole for the rotation shaft of the high-speed fan to pass through.

[0011] As preferably, the cylindrical structure is an internally hollow structure.

[0012] A high-speed fan comprising the high-speed fan assembly preventing foreign matter from entering as described above, a casing, a stator assembly, and a rotor assembly comprising a rotation shaft.

[0013] As preferably, the casing comprises an inner casing and an outer casing arranged coaxially, the inner surface of the inner casing is adjacent to a plurality of mounting cavities, the mounting cavities comprise a bearing chamber and a stator mounting cavity, a plurality of stationary vanes are arranged between the inner casing and the outer casing, and the profile of the stationary vanes is composed of a plurality of asymptotes.

[0014] Compared with the prior art, the high-speed fan assembly preventing foreign matter from entering and the high-speed fan have the following beneficial effects:

[0015] The high-speed fan assembly preventing foreign matter from entering and the high-speed fan have the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows.

[0017] Figure 1 is a schematic view of the high-efficiency air outlet high-speed fan blade of the present application.

[0018] Figure 2 is a schematic view of the A-A cross-sectional view of the high-efficiency air outlet high-speed fan blade of the present application.

[0019] Figure 3 is a schematic view of the C-C cross-sectional view of the high-speed fan in the embodiment of the present application.

[0020] Figure 4 Figure 1 is a schematic diagram of the blade structure of the high-speed fan blade with high-efficiency air outlet of the utility model.

[0021] Reference signs: 1-blade; 11-inlet end; 12-outlet end; 13-blade base; 131-cylinder structure; 132-tub; 14-blade; 2-casing; 21-inner casing; 22-outer casing; 23-stator blade; 3-stator assembly; 4-rotor shaft. DETAILED DESCRIPTION

[0022] The utility model is further illustrated below in combination with the drawings and specific embodiments, but the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0023] Please refer to Figures 1 to 3 A high-speed fan blade with high-efficiency air outlet of high-speed fan, including blade 1, casing 2, stator assembly 3, rotor assembly, the rotor assembly includes rotor shaft 4 and rotor magnet, the rotor magnet is the part of rotation in high-speed motor, is composed of permanent magnet, under the magnetic field of stator assembly, rotor magnet will be affected by electromagnetic force and rotate, thereby output mechanical energy, the stator assembly 3 is the part of static in high-speed motor, is stacked from silicon steel sheet, the surface is wound with coil, when the current passes through the coil, will produce magnetic field, be used for driving rotor rotation. The rotor magnet is fixed on the rotor shaft 4 and is placed in the internal cavity of the stator assembly 3, the rotor shaft 4 passes through the casing 2 and is fixedly connected with the blade 1, after electrification, the rotor assembly rotates under the driving of the stator assembly 3 and drives the blade 1 to rotate to make gas flow, gas flows from the inlet end 11 of the blade 1 to the outlet end 12, the blade 1 includes blade base 13 and blade 14, and the blade is airfoil-shaped or circular-arc-shaped, a plurality of blades 14 are uniformly arranged on the outer surface of the blade base 13, the connecting portion of the blade 14 and the outer surface of the blade base 13 is a curve, the width of the blade 14 is the length of the blade 14 in the direction perpendicular to the outer surface of the blade base 13, and the width of the blade 14 gradually increases along the direction through which the airflow passes. The relative points of adjacent blades 14 are corresponding points of adjacent blades in the plane perpendicular to the wind direction, that is, the connecting curve between the connecting portions of adjacent blades 14 and the outer surface of the blade base 13 is perpendicular to the instantaneous wind direction, the distance between the relative points of adjacent blades 14 gradually increases along the direction through which the airflow passes, the airflow channel between adjacent blades 14 has an outward expanding shape, the cross-sectional area of the airflow channel gradually increases from the inlet end 11 to the outlet end 12 of the blade, so that the pressure at the inlet end is greater than the pressure at the outlet end, the static pressure of the gas at the outlet end of the blade increases, and the air volume increases.

[0024] Further, the casing 2 comprises an inner casing 21 and an outer casing 22 coaxially arranged, the inner part of the inner casing 21 is adjacent to a plurality of installation cavities, the installation cavities comprise a bearing chamber and a stator installation cavity, a plurality of static vanes 23 are arranged between the inner casing 21 and the outer casing 22, the profile line of the static vanes 23 is composed of a plurality of asymptotes.

[0025] Further, the blade base 13 comprises an inner hollow cylindrical structure 131 and a boss 132 protruding from the end of the cylindrical structure, the blade 14 is arranged on the outer surface of the cylindrical structure 131, the boss 132 has a shaft hole for the high-speed fan shaft to pass through, the inner hollow cylindrical structure is assembled with the outer convex bearing chamber of the casing, so that the fan is compact and stable in volume.

[0026] Further, the blade 14 is a blade edge type structure at the blade end of the air inlet end 11, the thickness of the blade end of the blade edge type structure is not more than 0.3mm, specifically 0.1mm, the blade angle refers to the included angle between the blade edge and the blade back, in this embodiment, it refers to the included angle between the blade end and the thickest part of the blade, and the blade angle is 15°-20°.

[0027] In another embodiment, the blade edge type structure has a continuously undulating wavy blade edge, and the thickness of each blade edge is 0.3mm.

[0028] The above is only a specific embodiment of the present application. Obviously, the present application is not limited to the above embodiments, and can have many similar modifications, and all modifications directly derived or thought by those skilled in the art from the disclosed content of the present application should be considered as the scope to be protected by the present application.

Claims

1. A high velocity air mover assembly for preventing the ingress of foreign matter, the high velocity air mover assembly comprising: The fan blade base is provided with a plurality of blades on the outer surface, the blades are divided into an air inlet end and an air outlet end according to the direction of air flow, and the blade end of the air inlet end is in a blade edge type structure.

2. The foreign object intrusion prevention high speed fan assembly of claim 1, wherein, The blade edge type structure has a continuously undulating wave-shaped blade edge.

3. The foreign matter ingress protection high speed fan assembly of claim 1, wherein, The thickness of the blade end of the blade edge type structure is not more than 0.3 mm.

4. The foreign matter entry preventing high speed fan assembly according to claim 1, wherein The blade is in a wing shape or a circular arc shape.

5. The foreign matter ingress preventing high speed fan assembly according to claim 1, wherein, The fan blade base comprises a cylindrical structure and a boss protruding from the end of the cylindrical structure, and the blade is arranged on the outer surface of the cylindrical structure.

6. The foreign object intrusion prevention high speed fan assembly of claim 5, wherein, The boss has an axle hole for the axle of the high-speed fan to pass through.

7. The foreign matter ingress preventing high speed fan assembly according to claim 5, wherein The cylindrical structure is an internal hollow structure.

8. A high speed fan characterized by The high-speed fan assembly, the casing, the stator assembly and the rotor assembly of any one of claims 1 to 7 are provided.

9. The high speed fan of claim 8, wherein, The casing comprises an inner casing and an outer casing arranged coaxially, the inner surface of the inner casing is provided with a plurality of mounting cavities adjacent to each other, the mounting cavities comprise a bearing chamber and a stator mounting cavity, a plurality of static blades are arranged between the inner casing and the outer casing, and the profile line of the static blade is composed of a plurality of asymptotes.

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