Outer rotor high-speed blower motor adopting novel shell
Technical Field
The invention relates to the field of high-speed blower motors, in particular to an outer rotor high-speed blower motor adopting a novel shell.
Background
Blowing device and dust extraction like hairdryer, bladeless electric fan, negative pressure dust catcher, hand dryer, bathroom drying etc. all need use the motor, and the high-speed hair-dryer motor of outer rotor adopts the mode of plane connecting plate to be fixed connection with the inner and outer shell of motor among the prior art, has motor casing intensity inadequately, and the unable problem of casing that flows rapidly of high-speed amount of wind, adopts the mode of single bearing assembly to stator module and rotor module's assembly among the traditional motor simultaneously, has the assembly concentricity not high and leads to the electromagnetic noise that should the unbalanced magnetic tension cause.
Disclosure of Invention
In order to overcome the defects and shortcomings of the prior art, the invention provides an outer rotor high-speed blower motor adopting a novel shell, which solves the technical problems that in the prior art, the structural strength of the shell of the high-speed blower motor is insufficient, the air quantity caused by the shell cannot be blown out quickly, the pneumatic noise is caused by the air pressure difference, and the electromagnetic noise is caused by the assembly concentricity difference.
The invention realizes the aim through the following technical scheme: the utility model provides an adopt high-speed hair-dryer motor of external rotor of novel casing, includes rotor subassembly, stator module and duct casing, axis of rotation, guiding mechanism, the duct casing includes inner shell and shell, the inner shell with the shell is coaxial, guiding mechanism will the inner shell with shell fixed connection, the inner shell is kept apart by the division board and is cut apart into first inner shell and second inner shell, be provided with one or more through-holes on the division board.
Preferably, the motor further comprises a control device and a fan blade, wherein the stator assembly and the fan blade are arranged in the first inner shell, and the control device is installed at one end of the second inner shell.
Preferably, the flow guiding mechanism is a stator blade designed by adopting an Archimedes spiral line.
Preferably, the inner housing is provided with at least two bearing chambers for placing bearings of the rotating shaft.
Preferably, the rotating shaft is provided with a clamp spring groove, and the clamp spring is matched with the clamp spring groove and used for preventing the axial movement of the rotating shaft.
Preferably, the rotating shaft is an optical axis, and the optical axis is provided with a limiting piece matched with the optical axis for preventing axial movement of the rotating shaft.
Preferably, the limiting piece is a plum blossom meson.
Preferably, the control device is fixedly connected with one end of the second inner shell through a buckle structure, and an interface is arranged on the control device and is used for connecting the lead wires of the stator assembly.
Preferably, the second inner shell is provided with a boss, and the control device is fixedly connected with the boss through a buckle structure.
Preferably, the rotor assembly includes a rotor magnet and a rotor housing.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the stator blades based on Archimedes spiral design are arranged between the inner shell and the outer shell of the ducted casing to fixedly connect the inner shell and the outer shell, and the stator blades have the function of reinforcing ribs, so that the technical problems that the structural strength of the high-speed blower motor casing is insufficient, the air quantity caused by the casing cannot be blown out quickly, and the pneumatic noise is caused by the strong difference of the air pressure in the prior art are solved; meanwhile, at least two bearing chambers are assembled between the stator assembly and the rotating self-assembly, so that the technical problem of electromagnetic noise caused by poor assembly concentricity of the stator assembly and the rotor assembly in the prior art is solved, and the motor has the advantages of low motor starting and working noise, good silencing effect, low high-speed blowing air outlet resistance and high motor shell structural strength.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 shows an explosion diagram of an external rotor high-speed blower motor employing a novel housing according to the present invention.
Figure 2 shows an isometric view of a ducted casing of an external rotor high speed blower motor employing a novel casing of the present invention.
Reference numerals: 1-a rotor assembly; 11-rotor magnet; 12-a rotor housing; a 2-stator assembly; 3-a control device; 4-duct housing; 41-an inner shell; 411-a first inner shell; 412-a second inner housing; 42-a housing; 5-a flow guiding mechanism; 6-rotating shaft; 7-limiting pieces; 8-interface.
Detailed Description
The present invention will be further described with reference to the drawings and detailed description, wherein the described embodiments are only some, but not all, of the embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1-2, an external rotor high-speed blower motor adopting a novel casing comprises a rotor assembly 1, a stator assembly 2, a ducted casing 4, a rotating shaft 6 and a diversion mechanism 5, wherein the rotor assembly 1 comprises a rotor magnet 11 and a rotor outer casing 12, the ducted casing 4 comprises an inner casing 41 and an outer casing 42, the inner casing 41 and the outer casing 42 are coaxial, the diversion mechanism 5 fixedly connects the inner casing 41 with the outer casing 42, the diversion mechanism 5 is a stator blade adopting an archimedes spiral line design, the inner casing 41 is separated and divided into a first inner casing 411 and a second inner casing 412 by a separation plate, a plurality of through holes are formed in the separation plate, the blower fan also comprises a control device 3 and a fan blade, the stator assembly 2 and the fan blade are arranged in the first inner casing 411, and the control device 3 is arranged at one end of the second inner casing 412.
Further, the inner housing 41 is provided with two bearing chambers for placing the bearings of the rotating shaft 6, and the cooperation of the bearings of the rotating shaft 6 and the bearing chambers improves the assembly concentricity of the rotating shaft during assembly.
Further, a snap spring groove is formed in the rotating shaft 6, and the snap spring is matched with the snap spring groove and used for preventing axial movement of the rotating shaft 6.
Further, the control device 3 is fixedly connected with one end of the second inner shell 412 through a fastening structure, an interface 8 is arranged on the control device 3 and used for connecting the lead wires of the stator assembly 2, a boss is arranged on the second inner shell 412, and the control device 3 is fixedly connected with the boss through the fastening structure.
Example 2
Referring to fig. 1-2, an external rotor high-speed blower motor adopting a novel casing comprises a rotor assembly 1, a stator assembly 2, a ducted casing 4, a rotating shaft 6, a diversion mechanism 5, wherein the rotor assembly 1 comprises a rotor magnet 11 and a rotor outer casing 12, the ducted casing 4 comprises an inner casing 41 and an outer casing 42, the inner casing 41 and the outer casing 42 are coaxial, the diversion mechanism 5 fixedly connects the inner casing 41 with the outer casing 42, the diversion mechanism 5 is a stator blade adopting an archimedes spiral line design, the inner casing 41 is separated and divided into a first inner casing 411 and a second inner casing 412 by a separation plate, a through hole is formed in the separation plate, the blower fan also comprises a control device 3 and a fan blade, the stator assembly 2 and the fan blade are arranged in the first inner casing 411, and the control device 3 is arranged at one end of the second inner casing 412.
Further, the inner housing 41 is provided with two bearing chambers for placing the bearings of the rotating shaft 6, and the cooperation of the bearings of the rotating shaft 6 and the bearing chambers improves the assembly concentricity of the rotating shaft during assembly.
Further, the rotating shaft 6 is an optical axis, and a limiting piece is arranged on the optical axis and matched with the optical axis to prevent the axial movement of the rotating shaft, and the limiting piece is a plum blossom meson.
Further, the control device 3 is fixedly connected with one end of the second inner shell 412 through a fastening structure, an interface 8 is arranged on the control device 3 and used for connecting the lead wires of the stator assembly 2, a boss is arranged on the second inner shell 412, and the control device 3 is fixedly connected with the boss through the fastening structure.
The foregoing list is only illustrative of specific embodiments of the invention. It is obvious that the invention is not limited to the above embodiments, but that many similar modifications are possible, all modifications which can be directly derived or suggested to a person skilled in the art from the disclosure of the invention are to be considered as the scope of the invention as claimed.