High-speed neck fan
The present disclosure discloses a high-speed neck fan, including a hanging piece and a fan body connected to an end portion of the hanging piece; the fan body includes a shell; an air duct and a coordination base are formed on the shell; the coordination base is connected to one side of a periphery of the air duct; the air duct and the coordination base are in a stacked state on a radial cross section of the air duct; one end of the air duct is an air inlet, and the other end is an air outlet. According to the present disclosure, when a user wears the high-speed neck fan, the high-speed neck fan is stable and will hardly move or fall off. Furthermore, the air speed and the air supply distance are greatly improved. The user experience is effectively enhanced.
1 . A high-speed neck fan, comprising a hanging piece ( 1 ) and a fan body ( 2 ) connected to an end portion of the hanging piece ( 1 ), wherein the fan body ( 2 ) comprises a shell ( 22 ); an air duct ( 221 ) and a coordination base ( 222 ) are formed on the shell ( 22 ); the coordination base ( 222 ) is connected to one side of a periphery of the air duct ( 221 ); the air duct and the coordination base are in a stacked state on a radial cross section of the air duct; one end of the air duct ( 221 ) is an air inlet ( 223 ), and the other end is an air outlet ( 224 ); an air-driving fan blade group ( 23 ) is arranged in the air duct ( 221 ); and the air-driving fan blade group ( 23 ) guides an air flow located at the air inlet ( 223 ) to pass through the air duct ( 221 ) and then be blown out from the air outlet ( 224 ) in an accelerated manner;
wherein a motor base ( 241 ) is coaxially arranged in the air duct ( 221 ); a portion of a circumferential wall surface of the motor base ( 241 ) extends towards an inner wall of the air duct ( 221 ) to form booster blades ( 242 ); the booster blades ( 242 ) are arranged on one side of the air-driving fan blade group ( 23 ) facing the air outlet ( 224 ); the air-driving fan blade group ( 23 ) comprises a rotating seat ( 231 ) and air-driving blades ( 232 ) uniformly arranged on a peripheral wall surface of the rotating seat ( 231 ); rectifier blades ( 254 ) are arranged on sides of the booster blades ( 242 ) away from the air-driving fan blade group ( 23 ); the booster blades ( 242 ) achieves air-cutting boosting on an air flow conveyed by the air-driving blades ( 232 ); and the rectifier blades ( 254 ) guide the boosted air flow output from the booster blades ( 242 ), so that the boosted air flow is blown outwards in a direction parallel to an axial direction of the air outlet ( 224 );
wherein a surface of each of the booster blades ( 242 ) facing an outer side of the air outlet ( 224 ) is a windward surface ( 243 ), and a surface of one side of each of the air-driving blades ( 232 ) facing the booster blade ( 242 ) is an air-driving surface ( 233 ); in a rotation process of the air-driving fan blade group ( 23 ), the air-driving surfaces ( 233 ) rotate towards the windward surfaces ( 243 ); in the same radial area, a curved surface where the windward surface ( 243 ) is located is intersected with a curved surface where the air-driving surface ( 233 ) is located; and an angle between the windward surface ( 243 ) and the air-driving surface ( 233 ) is θ1<90°.
2 . The high-speed neck fan according to claim 1 , wherein an angle θ2 between the windward surface ( 243 ) and a central axis of the air-driving fan blade group ( 4 ) satisfies: 30°<θ2<60°.
3 . The high-speed neck fan according to claim 2 , wherein the angle between the windward surface ( 243 ) and the central axis of the air-driving fan blade group ( 4 ) is θ2=45°.
4 . The high-speed neck fan according to claim 1 , wherein an air guide member ( 24 ) is sleeved in the air duct ( 221 ); the air guide member ( 24 ) is a tubular body; the motor base ( 241 ) is arranged in the air guide member ( 24 ); the booster blades ( 242 ) are formed by extension of the portion of the circumferential wall surface of the motor base ( 241 ) towards an inner wall of the air guide member ( 24 ); a linear slot ( 244 ) is provided on an outer wall surface of the air guide member ( 24 ); the linear slot ( 244 ) extends in an axial direction of the air guide member ( 24 ); a linear column ( 226 ) corresponding to the linear slot ( 244 ) is arranged on an inner wall surface of the air duct ( 221 ); and the air guide member ( 24 ) cooperates with the linear column ( 226 ) through the linear slot ( 244 ) to achieve directed sliding.
5 . The high-speed neck fan according to claim 1 , wherein an outlet housing ( 25 ) is covered at the air outlet ( 224 ); a connecting base ( 251 ) is coaxially arranged at a central axis of the outlet housing ( 25 ); the rectifier blades ( 254 ) are formed by radial extension of a portion of a circumferential wall surface of the connecting base ( 251 ); the rectifier blades ( 254 ) are arranged in a manner of being parallel to a central axis of the air outlet ( 224 ); a limiting step ( 225 ) is arranged at the air outlet ( 224 ) on an inner wall surface of the air duct ( 221 ); a limiting flange ( 255 ) corresponding to the limiting step ( 225 ) is arranged on an outer wall of the outlet housing ( 25 ); the outlet housing ( 25 ) is integrally connected to the air duct ( 221 ) through opposite limitation by the limiting step ( 225 ) and the limiting flange ( 255 ).
6 . The high-speed neck fan according to claim 1 , wherein an end portion of the hanging piece ( 1 ) is fixedly connected to the fan body ( 2 ) through a connecting mechanism; the connecting mechanism comprises a hole groove ( 252 ) provided on the fan body ( 2 ), a plug ( 13 ) plugged into the hole groove ( 252 ), a ring slot ( 11 ) arranged at an end portion of the hanging piece ( 1 ), and a clamping ring ( 12 ) clamped with the ring slot ( 11 ); the hole groove ( 252 ) penetrates through the shell of the fan body ( 2 ); the plug ( 13 ) is provided with an axial through hole; the end portion of the hanging piece ( 1 ) passes through the hole groove ( 252 ) and the through hole of the plug ( 13 ) in sequence, and is in buckling connection to the clamping ring ( 12 ); a stud ( 253 ) is arranged in the hole groove ( 252 ); the stud ( 253 ) is parallel to a central axis of the hole groove ( 252 ); the plug ( 13 ) is provided with a stud sleeve ( 131 ) corresponding to the stud ( 253 ); and the stud sleeve ( 131 ) sleeves the stud ( 253 ) in a circumferential direction.
7 . The high-speed neck fan according to claim 1 , wherein an inlet housing ( 21 ) is covered at the air inlet ( 223 ).
8 . The high-speed neck fan according to claim 1 , wherein each of two end portions of the hanging piece ( 1 ) is respectively connected with the fan body ( 2 ); a circuit board assembly ( 26 ) is arranged in the coordination base ( 222 ) of one fan body ( 2 ); the air-driving fan blade group ( 23 ) in the air duct ( 221 ) of the fan body is electrically connected to the circuit board assembly ( 26 ); a storage battery ( 27 ) is arranged in the coordination base ( 222 ) of the other fan body ( 2 ); and the storage battery ( 27 ) and the air-driving fan blade group ( 23 ) in the same fan body ( 2 ) as the storage battery are electrically connected to the circuit board assembly ( 26 ) through an internal routing of the hanging piece ( 1 ).
9 . The high-speed neck fan according to claim 8 , wherein the circuit board assembly ( 26 ) is electrically connected with a control button ( 261 ), a USB interface ( 262 ), and a light-emitting bead ( 263 ); the control button ( 261 ), the USB interface ( 262 ), and the light-emitting bead ( 263 ) are all arranged in preset through holes of the shell of the coordination base ( 222 ); and a thermal insulation pad ( 28 ) is sandwiched between the storage battery ( 27 ) and a wall surface of one side of the coordination base ( 222 ) away from the air duct ( 221 ).
10 . The high-speed neck fan according to claim 1 , wherein the hanging piece ( 1 ) is a deformable snake-shaped pipe.