CN209950592U

CN209950592U - High-speed motor and high-speed electric hair drier

Info

Publication number: CN209950592U
Application number: CN201920188954.8U
Authority: CN
Inventors: 喻金明; 叶志文; 肖林; 张敏
Original assignee: Hangzhou Happy Show Electronic Technology Co Ltd
Current assignee: Hangzhou Happy Show Electronic Technology Co Ltd
Priority date: 2019-02-07
Filing date: 2019-02-07
Publication date: 2020-01-17
Anticipated expiration: 2029-02-07

Abstract

The utility model relates to the field of household appliances, in order to solve the problems of large volume and air quantity and air pressure loss of an electric hair drier, in particular to a high-speed motor, which comprises a rotor assembly and a stator assembly, wherein the motor also comprises fan blades and a bracket for supporting the rotor assembly and the stator assembly; the rotor assembly is connected with the fan blades and drives the fan blades to rotate; the bracket comprises a first cylinder for supporting the rotor assembly and a second cylinder for accommodating the fan blades; the first cylinder is positioned on one side of the second cylinder and is connected with the second cylinder through a connecting blade; the inner diameter of the second cylinder is D1, and D1 is more than or equal to 20mm and less than or equal to 60 mm.

Description

High-speed motor and high-speed electric hair drier

Technical Field

The utility model relates to a domestic appliance field especially relates to a high-speed motor and high-speed hairdryer.

Background

Hair dryers typically include a housing assembly and a handle assembly connected to the housing assembly, and a fan unit for drawing an airflow into the interior of the hair dryer so that the hair dryer can be used to dry or style hair. The fan unit comprises a motor and fan blades driven by the motor to rotate, and the air pressure and the air quantity of air flow blown out by the electric hair drier are influenced by the rotating speed of the motor, so that the hair-drying efficiency is directly influenced. The rotating speed of a motor applied to the hair dryer on the market is mostly about 2 thousands of revolutions, and due to the influence of the performance of the motor, the air volume and the air pressure generated by the hair dryer are limited.

Daison patent CN201621361236.9 discloses a hand-held product using a high-speed motor, and the rotating speed of the motor is 7.5 to 11 thousands of rotations, because the rotating speed of the motor is high, large air volume and air pressure can be generated, but the motor mentioned in the patent has an air duct, the motor is molded by casting, the air duct is inside the motor, the precision is not easy to control, and the design precision of the air duct can influence the air volume and the air pressure of the air flow blown out by the hair dryer.

The motor of using among the prior art is for having the brush motor, by the restriction of motor structure, by the influence of motor structure, set up motor fixed knot in the shell subassembly and construct, in order to make the loss that reduces the inside air current of suction entering hairdryer, be equipped with the wind channel on the motor fixed knot constructs, play the effect of guide air current, the shortcoming of this kind of structure is, motor speed is not high, the motor is bulky, motor fixed knot constructs the volume also great, and then leads to the bulky of hairdryer, portable and accomodate not.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides a high-speed motor and use this high-speed motor's hairdryer.

The technical scheme of the utility model as follows:

a high-speed motor comprises a rotor assembly and a stator assembly, wherein the motor further comprises fan blades and a bracket for supporting the rotor assembly and the stator assembly;

the rotor assembly is connected with the fan blades and drives the fan blades to rotate;

the bracket comprises a first cylinder for supporting the rotor assembly and a second cylinder for accommodating the fan blades;

the first cylinder is positioned on one side of the second cylinder and is connected with the second cylinder through a connecting blade;

the inner diameter of the second cylinder is D1, and D1 is more than or equal to 20mm and less than or equal to 60 mm.

Preferably, the clearance between the fan blade and the side wall of the second cylinder is D2, and D2 is more than 0mm and less than or equal to 5 mm.

Preferably, the distance between the edge of the fan blade close to the lower end of the second cylinder and the lower end of the second cylinder is D3, and D3 is not less than 0mm and not more than 10 mm.

Preferably, the inner diameter of the first cylinder is D4, and D4 is more than or equal to 1.5mm and less than 20 mm.

Preferably, the thickness of the connecting blade is d, and d is more than or equal to 0.1mm and less than or equal to 3 mm.

Preferably, the number of the connecting blades is N, and N is more than or equal to 4 and less than or equal to 12.

Preferably, the rotating speed of the rotor assembly is n, and 80000rpm is not less than n and not more than 130000 rpm.

Preferably, the rotor assembly comprises a magnet, the magnet is positioned above the first cylinder, and the magnet extends into the stator assembly.

Preferably, the first cylinder, the second cylinder and the connecting blade are cast by metal.

A high speed hair dryer comprising a body assembly, a handle assembly connected to the body assembly, and a motor for generating an airflow through the appliance, wherein the motor is as described in any one of the above.

The utility model has the advantages that:

1. the fan blades and the motor are integrated into one component, so that the assembly steps of the whole machine are simplified, and the assembly difficulty is reduced; the rotor assembly is small in size and needs a small mounting space, so that the size of the first cylinder can be smaller; the fan blades are generally large in size and need a second cylinder with a large size for protection, so that the motor is smaller in size, materials are saved, and the cost is reduced; another advantage is that the air flow generated by the fan blades is blown out from the gap between the first cylinder and the second cylinder; by making the inner diameter of the second cylinder D1, 20 mm-D1-60 mm, the advantage is that proper air volume is obtained; when the D1 is less than 20mm, the obtained air volume is low, and the requirement cannot be met; when D1 is more than 60mm, the motor is too large in size, heavy and high in cost.

2. The clearance between the fan blade and the side wall of the second cylinder body is D2, D2 is more than 0mm and less than or equal to 5mm, so that the noise is reduced, and larger wind pressure is obtained; when D2 is more than 5mm, the cavity is easy to release pressure, and wind noise is large.

3. The distance between the edge of the fan blade close to the lower end of the second cylinder and the lower end of the second cylinder is D3, D3 is more than or equal to 0mm and less than or equal to 10mm, so that the air intake is ensured, when D3 is more than 10mm, the influence on the air intake in unit time is large, the air intake in unit time is reduced, and the requirement cannot be met.

4. The inner diameter of the first cylinder body is D4, and D4 is more than or equal to 1.5mm and less than 20mm, so that the air inlet volume is increased while the bearing of the rotor assembly is provided with an installation space and supported; when D4 is less than 1.5mm, the difficulty of finding a bearing with a proper size is high due to technical limitation, and the cost is increased; when D4 is greater than 20mm, the wind resistance is increased, the wind loss is generated, and the wind quantity is reduced.

5. The thickness of the connecting blade is d, d is more than or equal to 0.1mm and less than or equal to 3mm, so that the advantages of ensuring the connecting strength of the first cylinder and the second cylinder, reducing wind resistance and reducing air volume loss are achieved; when d is less than 0.1mm, the connecting blade is too thin, the connecting strength of the first cylinder and the second cylinder cannot be ensured, and because the rotor assembly runs at high speed in the working process of the motor, the connecting blade is easy to deform, so that the wind resistance is increased, and the airflow direction can be changed, so that the loss of the air volume and the wind pressure is caused; when d > 3mm, wind resistance is large and resonance is easily generated.

6. The number of the connecting blades is N, N is more than or equal to 4 and less than or equal to 12, so that the advantages of guiding airflow, obtaining proper wind direction, reducing wind resistance, reducing air quantity loss and ensuring the connection reliability of the first barrel and the second barrel are achieved; when N is less than 4, a larger torsion is generated when the rotor assembly works, which may cause deformation of the connecting blades, thereby increasing wind resistance, changing the airflow direction and causing loss of wind volume and wind pressure; when N is more than 12, the number of the connecting blades is too large, the wind resistance is increased, and the wind loss is caused.

7. Through making the rotor subassembly include the magnet, the magnet is located the top of first barrel, just inside the magnet stretched into stator module, the benefit was, and the cooperation is more reliable, makes the rotor subassembly drive the flabellum rotatory.

8. The processing precision can be improved by making the bracket from metal, the bracket is not easy to deform, and the shrinkage phenomenon can not be generated; when the second cylinder is made of metal materials, the upper end face of the second cylinder is located below the magnet, so that the influence of the metal materials on the magnetic field can be reduced as much as possible, and the influence of the metal support on the rotating speed of the rotor assembly is reduced.

9. The electric hair drier using the motor has simple assembly process of the whole electric hair drier, and the motor occupies smaller installation space, thereby reducing the volume of the whole electric hair drier; and the loss of air volume and air pressure can be reduced, and proper air volume and air pressure can be obtained.

Drawings

Fig. 1 is a schematic view of the whole structure of the hair dryer according to the first embodiment of the present invention.

Fig. 2 is a cross-sectional view of the motor according to the first embodiment of the present invention.

Fig. 3 is an enlarged view indicated by a in fig. 2.

Fig. 4 is an assembly schematic view of the motor and the air guide duct according to the first embodiment of the present invention.

Fig. 5 is an exploded view of the assembly of the air duct and the motor according to the first embodiment of the present invention.

Fig. 6 is a sectional view of the assembly of the air duct and the motor according to the first embodiment of the present invention.

Fig. 7 is an enlarged view indicated by B in fig. 6.

Fig. 8 is a schematic structural diagram of the motor according to the first embodiment of the present invention.

Fig. 9 is a cross-sectional view of a motor according to a first embodiment of the present invention.

Fig. 10 is an exploded view of a hair dryer handle assembly according to a first embodiment of the present invention.

Fig. 11 is an exploded view of another structure of the handle assembly of the hair dryer according to the first embodiment of the present invention.

Fig. 12 is a schematic structural diagram of a motor according to the second embodiment of the present invention.

Fig. 13 is a cross-sectional view of a motor according to a second embodiment of the present invention.

Fig. 14 is a schematic structural diagram of a motor according to a third embodiment of the present invention.

Fig. 15 is an exploded view of the motor according to the third embodiment of the present invention.

Fig. 16 is a cross-sectional view of a motor according to a third embodiment of the present invention.

Fig. 17 is a cross-sectional view of a motor according to the fourth embodiment of the present invention.

The names of the components marked in the figures are as follows:

1. a housing; 2. a handle assembly; 201. an inner handle; 202. an outer handle; 203. an opening; 204. a first inner handle; 205. a second inner handle; 3. an air inlet; 4. an air outlet; 5. a fan unit; 501. a motor; 502. a fan blade; 6. a heating unit; 7. an air guide pipe; 8. a first cylinder; 9. a second cylinder; 10. connecting the blades; 1001. an arc-shaped section; 1002. a vertical section; 1003. an inner concave portion; 11. a third cylinder; 12. an air flow channel; 13. an air inlet side; 14. an air outlet side; 15. a stator assembly; 16. a rotor assembly; 1601. a magnet.

Detailed Description

The following describes the present invention in detail with reference to the accompanying drawings.

The first embodiment is as follows:

as shown in fig. 1 to 11, a high-speed hair dryer comprises a housing 1, a handle assembly 2 connected with the housing 1, an air inlet 3, an air outlet 4, a fan unit 5 for drawing an air flow from the air inlet 3 into the interior of the hair dryer, and a heating unit 6 for heating the air flow, wherein the fan unit 5 comprises fan blades 502 and a motor 501 for driving the fan blades 502 to rotate, the motor 501 comprises a stator assembly 15 and a rotor assembly 16, and the motor 501 further comprises a bracket for supporting the rotor assembly 16 and the stator assembly 15; the rotor assembly 16 is connected to the fan blade 502 and drives the fan blade 502 to rotate; the bracket comprises a first cylinder 8 for supporting the rotor assembly 16 and a second cylinder 9 for accommodating the fan blades 502; the first cylinder 8 is arranged on one side of the second cylinder 9 and is connected with the second cylinder 9 through a connecting blade 10; the electric hair drier also comprises an air guide pipe 7, the second cylinder 9 comprises an air inlet side 13 and an air outlet side 14, and the fan blades 502 rotate to enable air flow to enter the second cylinder 9 from the air inlet side 13 and enter the air guide side from the air outlet side 14.

The first cylinder 8, the second cylinder 9 and the connecting blade 10 are integrally formed, and the bracket can be made of plastic or metal, preferably metal, especially aluminum, zinc and the like.

The motor 501 can be arranged in the handle assembly 2, at this time, the air inlet 3 is arranged on the handle assembly 2, the motor 501 is arranged above the air inlet 3, the axis of the motor 501 is the same as the axis of the handle assembly 2, the air inlet side 13 is closer to the air inlet 3, when the fan blade 502 rotates, air flow enters the second cylinder 9 from the air inlet 3, the air inlet 3 is positioned below the air inlet side 13 of the second cylinder 9, and the first cylinder 8 is positioned above the second cylinder 9; the motor 501 can also be arranged in the housing 1, the air inlet 3 is arranged at the rear end of the housing 1, the axis of the motor 501 is the same as that of the housing 1, the air inlet side 13 of the second cylinder 9 is closer to the air inlet 3, and the first cylinder 8 is arranged at the left side of the second cylinder 9. In both cases, the air outlet 4 is provided at the front end of the housing 1.

It should be noted that, in the present invention, the terms "upper", "lower", "left" and "right" are relative reference directions, and when the reference direction changes, "upper", "lower" or "left" and "right" can be interchanged; "up" and "left", "down" and "right" may refer to the same direction.

The second cylinder 9 is positioned in the air guide pipe 7, and the second cylinder 9 can be positioned in the air guide pipe 7 completely or partially; when the second cylinder 9 is fully located in the air duct 7, the end of the air duct 7 near the air inlet 3 is located above or on the left side of the air inlet 3, and the upper side or the left side is determined by whether the air inlet 3 is arranged on the handle assembly 2 or the housing 1. The scheme can ensure that the airflow entering the second cylinder 9 directly enters the air guide pipe 7, thereby reducing the wind resistance and the wind loss. The air guide pipe 7 and the first cylinder 8 limit an air flow channel 12, the fan blade 502 rotates to enable air flow to enter the second cylinder 9 from the air inlet side 13 and enter the air flow channel 12 through the air outlet side 14, the air guide pipe 7 and the first cylinder 8 limit an annular air flow channel 12, and air flow is guided through the inner wall of the air guide pipe 7 and the outer wall of the first cylinder 8, so that air flow loss is reduced. The air guide pipe 7 can be a silicone tube, and a gap is formed between the connecting blade 10 and the silicone tube; the air guide pipe 7 can also be a plastic pipe or a metal pipe, at this time, the connecting blade 10 and the air guide pipe 7 are in interference fit, and the airflow blown out from the second cylinder 9 is guided through the inner side wall of the air guide pipe 7, the connecting blade 10 and the outer side wall of the first cylinder 8.

In another possible variant, a certain gap is provided between the second cylinder 9 and the air guide pipe 7, that is, the second cylinder 9 is located outside the air guide pipe 7, and the second cylinder 9 is closer to the air inlet 3 than the air guide pipe 7.

In another possible variation, a third cylinder 11 connected to the air guide pipe 7 is further disposed in the air guide pipe 7, the third cylinder 11 defines an airflow channel 12, and the fan blade 502 rotates to make the airflow enter the second cylinder 9 from the air inlet side 13 and enter the airflow channel 12 through the air outlet side 14. The third cylinder 11 may be provided integrally with the air guide duct 7 or may be provided separately from the air guide duct 7. When the third cylinder 11 and the air guide pipe 7 are integrally arranged, the third cylinder 11 is a high-temperature-resistant plastic part, the air guide pipe 7 is a silicone tube, and the air guide pipe 7 and the third cylinder 11 are integrally injection-molded; the temperature resistant plastic part is PA66+30GF, and the hardness of silicone tube is 55 degrees and above, guarantees by the wind channel of guide duct 7 restriction not warp. The third cylinder 11 is made of high-temperature-resistant plastic, so that the structure of the third cylinder 11 is convenient to manufacture, and the assembly precision is convenient to improve. It can be understood that the third cylinder 11 can also be a metal member, the air guiding pipe 7 is a silicone pipe, and preferably, the third cylinder 11 is made of a zinc material, so as to reduce the working noise of the motor 501. The third cylinder 11 and the air guide pipe 7 are arranged separately, the third cylinder 11 is assembled with the bracket, and then the motor 501 is installed in the air guide pipe 7.

The inner diameter of the second cylinder 9 is larger than the outer diameter of the first cylinder 8, and the airflow is blown out from the air outlet side 14 and guided to enter the air guide pipe 7 through the outer side wall of the first cylinder 8. The difference value between the outer diameter of the first cylinder 8 and the inner diameter of the second cylinder 9 is D, D is more than or equal to 1mm and less than or equal to 50mm, and the wind resistance is reduced and the wind quantity is increased; when D is less than 1mm, the requirement on process precision is high, the process difficulty is increased, the system is difficult to adapt, and the cost is increased; when D is larger than 50mm, the size of the motor 501 is increased, the motor is slightly heavy, the use experience and the aesthetic feeling degree of the appearance are reduced, and the air volume and the air pressure are reduced. Preferably D =13 mm. The inner diameter of the second cylinder 9 is D1, D1 is more than or equal to 20mm and less than or equal to 60mm, and the advantage is that proper air volume is obtained; when the D1 is less than 20mm, the obtained air volume is low, and the requirement cannot be met; when D1 is larger than 60mm, the motor 501 is too large in size, heavy and high in cost. The inner diameter of the first cylinder 8 is D4, D4 is more than or equal to 1.5mm and less than 20mm, which has the advantages of providing mounting space for the bearing of the rotor assembly 16, supporting and simultaneously improving the air intake; when D4 is less than 1.5mm, the difficulty of finding a bearing with a proper size is high due to technical limitation, and the cost is increased; when D4 is greater than 20mm, the wind resistance is increased, the wind loss is generated, and the wind quantity is reduced. The outer diameter of the first cylinder 8 is D5, and D5 is more than or equal to 3.5mm and less than 23mm, which has the advantages of providing installation space for the bearing of the rotor assembly 16, having enough strength for supporting and simultaneously improving the air intake; when D5 is less than 3.5mm, due to technical limitation, the difficulty of finding a bearing with a proper size is high, the cost is increased, the wall thickness of the first cylinder 8 is too thin to provide reliable support for the rotor assembly 16, the matching precision of the fan blade 502 and the second cylinder 9 cannot be ensured, and further the air volume and the air pressure are influenced; when D5 is larger than 23mm, the wind resistance is increased, so that the wind loss is generated, and the wind quantity is reduced; preferably D1=28mm, D4=12 mm; d5=15 mm.

The clearance between the fan blade 502 and the side wall of the second cylinder 9 is D2, D2 is more than 0mm and less than or equal to 5mm, which has the advantages of reducing noise and obtaining larger wind pressure; when D2 is more than 5mm, the cavity is easy to release pressure, and wind noise is large.

The distance between the edge of the fan blade 502 close to the lower end of the second cylinder 9 and the lower end of the second cylinder 9 is D3, D3 is more than or equal to 0mm and less than or equal to 10mm, which is beneficial to ensuring the air intake, when D3 is more than 10mm, the influence on the air intake in unit time is large, the air intake in unit time is reduced, and the requirement can not be met.

A part of the first cylinder 8 extends into the second cylinder 9; or, one end of the first cylinder 8 close to the air outlet side 14 is flush with the air outlet side 14; alternatively, one end of the first cylinder 8 close to the air-out side 14 is located at one side of the air-out side 14. The distance between the air outlet side 14 of the second barrel 9 and one end, close to the air outlet side 14, of the first barrel 8 is h, h is more than or equal to 0mm and less than or equal to 5mm, and the advantages that the connection strength of the first barrel 8 and the second barrel 9 is ensured, and the internal space of the second barrel 9 is occupied as little as possible; when h > 5mm, the connection strength between the first cylinder 8 and the second cylinder 9 may be reduced, and the motor 501 is easy to deform during operation, so that the air volume and the air pressure are affected, or the volume of the second cylinder 9 is increased, the volume of the motor 501 is increased, and the required installation space is increased.

One end of the connecting blade 10 close to the air outlet side 14 extends into the second cylinder 9; alternatively, the end of the connecting blade 10 close to the air outlet side 14 is flush with the air outlet side 14 of the second cylinder 9. The distance between the lower end of the connecting blade 10 and the air outlet side 14 is H, H is more than or equal to 0 and less than or equal to 5mm, and the advantages that the connecting strength of the first cylinder 8 and the second cylinder 9 is improved, so that the connecting blade 10 is not easy to deform in the working process of the motor 501, and the influence on the air volume and the air pressure is reduced; when H is greater than 5mm, the connecting blade 10 needs to extend into the second cylinder 9, so as to avoid interference between the connecting blade 10 and the fan blade 502, which may increase the volume of the second cylinder 9, and increase the installation space occupied by the motor 501. The height from the connecting blade 10 to the outer side wall of the first cylinder 8 is H1, H1 is more than or equal to 3mm and less than or equal to 10mm, the connecting strength of the first cylinder 8 and the second cylinder 9 is improved, meanwhile, the connecting blade 10 can play a role in guiding flow to a certain extent, and the air volume loss is reduced; when H1 is less than 3mm, the connection strength of the first cylinder 8 and the second cylinder 9 is not enough, and the first cylinder is easy to deform in the working process; when H1 is greater than 10mm, the motor 501 is increased in size and cost. Preferably H1=8 mm.

The connecting blade 10 comprises an arc-shaped section 1001 close to the air outlet side 14, the arc-shaped section 1001 is provided with an inner concave part 1003 with the same rotating direction as the fan blade 502, and by the structural arrangement, when air flow enters the air flow channel 12 from the first cylinder 8, air flow loss is reduced. Connecting blade 10 still includes the vertical section 1002 of being connected with arc section 1001, vertical section 1002 is on a parallel with the central line of first barrel 8, and the benefit is through the setting of vertical section 1002 guide air current along the direction of last barrel central line blow air current channel 12, after motor 501 dress is inside the hairdryer, generally with handle component 2 or with the installation of shell 1 concentricity, vertical section 1002 be provided with do benefit to the loss that reduces amount of wind, wind pressure. The arcuate section 1001 smoothly transitions with the vertical section 1002.

The thickness of the connecting blade 10 is d, d is more than or equal to 0.1mm and less than or equal to 3mm, and the advantages that the wind resistance is reduced and the wind loss is reduced while the connecting strength of the first cylinder 8 and the second cylinder 9 is ensured; when d is less than 0.1mm, the connecting blade 10 is too thin, so that the connecting strength of the first cylinder 8 and the second cylinder 9 cannot be ensured, and because the rotor assembly 16 runs at a high speed in the working process of the motor 501, the connecting blade 10 is easy to deform, so that the wind resistance is increased, and the airflow direction can be changed, so that the loss of the air volume and the wind pressure is caused; when d > 3mm, wind resistance is large and resonance is easily generated. Preferably d =0.1 mm. The number of the connecting blades 10 is N, N is more than or equal to 4 and less than or equal to 12, so that the airflow is guided, a proper wind direction is obtained, the wind resistance is reduced, the wind loss is reduced, and the connection reliability of the first cylinder 8 and the second cylinder 9 is ensured; when N is less than 4, a larger torsion is generated when the rotor assembly 16 works, which may cause the deformation of the connecting blade 10, thereby increasing the wind resistance, changing the airflow direction and causing the loss of wind volume and wind pressure; when N is more than 12, the number of the connecting blades 10 is too large, the wind resistance is increased, and the wind loss is caused. Preferably N = 9.

The distance between the edge of the fan blade 502 close to the air outlet side 14 and the air outlet side 14 is L1, L1 is more than or equal to 0.1mm and less than or equal to 20mm, and the advantage is that the airflow entering the second cylinder 9 is rectified at the distance, so that the air pressure is improved; when L1 is less than 0.1mm, effective rectification cannot be performed, the wind pressure improvement effect is not obvious, and a part of airflow which is not rectified enters the air guide pipe 7 from the air outlet side 14 and collides with the inner wall of the air guide pipe 7, so that the air volume loss is caused; when L1 is more than 20mm, the distance is too long, the airflow is gathered in the second cylinder 9 and can not smoothly enter the air guide pipe 7, and the air inlet amount is influenced. Preferably L1=2 mm.

The distance between the edge of the fan blade 502 close to the air outlet side 14 and one end of the connecting blade 10 close to the air outlet side 14 is L2, L2 is more than or equal to 0.1mm and less than or equal to 20mm, which has the advantage of obtaining proper air pressure, and the air flow entering the second cylinder 9 is rectified through the distance, so that the air volume and the air pressure loss are reduced; when L2 is less than 0.1mm, effective rectification cannot be performed, the wind pressure improvement effect is not obvious, and a part of airflow which is not rectified enters the air guide pipe 7 from the air outlet side 14 and collides with the inner wall of the air guide pipe 7, so that the air volume loss is caused; when L2 is more than 20mm, the distance is too long, the airflow is gathered in the second cylinder 9 and can not smoothly enter the air guide pipe 7, and the air inlet amount is influenced. Preferably, L2=2 mm.

Connect blade 10's upper end and exceed first barrel 8's up end, guide the air current, reduce the air loss, stator module 15 is located keeping away from of first barrel 8 one side of the tip of air-out side 14 connects blade 10 and winds stator module 15 setting, makes motor 501 miniaturized, connect blade 10 and stator module 15 interference fit, stator module 15's lateral wall is equipped with recess or protruding muscle, the inboard of connecting blade 10 is equipped with complex protruding muscle or recess with it, realizes stator module 15's fixed through recess and protruding muscle's interference fit, and the benefit is, simple structure, fixed reliable. The rotor assembly 16 includes a magnet 1601, the magnet 1601 is located above the first barrel 8, and the magnet 1601 protrudes into the stator assembly 15. The rotating speed of the rotor assembly 16 is n, 80000rpm is not more than n and not more than 130000rpm, and large wind volume and wind pressure are obtained, preferably n =11000 rpm.

The first cylinder 8, the second cylinder 9 and the connecting blades 10 are cast by metal, and zinc alloy is preferably selected, so that the noise can be absorbed, and the noise is reduced; or the aluminum alloy is selected and used, so that the weight is light.

Further, when the motor 501 is disposed in the handle assembly 2, the handle assembly 2 includes an inner handle 201 and an outer handle 202 sleeved outside the inner handle 201, the inner handle 201 has an opening 203, the motor 501 is disposed in the opening 203, and the outer handle 202 covers the opening 203.

Alternatively, the handle assembly 2 comprises an inner handle 201 and an outer handle 202 sleeved outside the inner handle 201, the inner handle 201 comprises a first inner handle 204201 and a second inner handle 205201 which are separated along the axial direction of the inner handle, and the motor 501 is arranged in the inner handle 201.

Example two:

the difference between the present embodiment and the first embodiment is that, as shown in fig. 12 and 13, the second cylinder 9 includes an air inlet side 13 and an air outlet side 14, and the first cylinder 8 is disposed on the air inlet side 13 of the second cylinder 9.

The motor 501 can be arranged in the handle assembly 2, at this time, the air inlet 3 is arranged on the handle assembly 2, the motor 501 is arranged above the air inlet 3, the axis of the motor 501 is the same as the axis of the handle assembly 2, the air inlet side 13 is closer to the air inlet 3, when the fan blade 502 rotates, air flow enters the second cylinder 9 from the air inlet 3, the air inlet 3 is positioned below the air inlet side 13 of the second cylinder 9, and the first cylinder 8 is positioned below the second cylinder 9; the motor 501 can also be arranged in the housing 1, the air inlet 3 is arranged at the rear end of the housing 1, the axis of the motor 501 is the same as that of the housing 1, the air inlet side 13 of the second cylinder 9 is closer to the air inlet 3, and the first cylinder 8 is arranged at the right side of the second cylinder 9. In both cases, the air outlet 4 is provided at the front end of the housing 1.

In this case, a portion of the first cylinder 8 extends inside the second cylinder 9; or, the lower end of the first cylinder 8 is flush with the upper end of the second cylinder 9, that is, the end of the first cylinder 8 close to the air inlet side 13 of the second cylinder 9 is flush with the air inlet side 13 of the second cylinder 9; or, the lower end of the first cylinder 8 is located above the second cylinder 9, that is, a certain gap is formed between one end of the first cylinder 8 close to the air inlet side 13 of the second cylinder 9 and the air inlet side 13 of the second cylinder 9. The connecting blade 10 extends into the second cylinder 9; or, the lower end of the connecting blade 10 is flush with the upper end of the second cylinder 9, that is, the end of the connecting blade 10 close to the air inlet side 13 of the second cylinder 9 is flush with the air inlet side 13 of the second cylinder 9.

"upper end" and "lower end" relate to the reference direction, in this example, "lower end" refers to the end closer to the air intake side 13, and "upper end" refers to the end farther from the air intake side 13; the "upper end of the second cylinder 9" refers to the air inlet side 13 of the second cylinder 9, and the "lower end of the second cylinder 9" refers to the air outlet side 14 of the second cylinder 9. In this example, "up" and "down" are opposite to those in the first example, and the second example can be obtained by turning the directions of "up" and "down" in the first example.

When the motor in this embodiment is disposed in the handle assembly 2, the first cylinder 9 is closer to the air inlet 3 than the second cylinder 8, and the motor in this embodiment is disposed in the handle assembly 2 in a manner similar to that in the first embodiment.

Example three:

the present embodiment is different from any of the above embodiments in that, as shown in fig. 14 to 16, the hair dryer further includes a third cylinder 11 for fixing the motor 501, the third cylinder 11 and the first cylinder 8 define an airflow channel 12, and the third cylinder 11 is separated from the bracket. When the fan blade 502 rotates, the air flow entering the electric hair drier from the air inlet 3 firstly enters the air flow channel 12 and then enters the second cylinder 9; or the air flow entering the hair dryer from the air inlet 3 firstly enters the second cylinder 9 and then enters the air flow channel 12.

Further, the second cylinder 9 includes an air inlet side 13 and an air outlet side 14, and the fan blade 502 rotates to make the air flow enter the second cylinder 9 from the air inlet side 13 and enter the air flow channel 12 through the air outlet side 14.

The third cylinder 11 includes an abutting portion that abuts against the second cylinder 9. The abutting portion may be an end surface of the third cylindrical body 11, a step surface on an inner side wall of the third cylindrical body 11, or an inner side wall of the third cylindrical body 11.

The abutting part abuts against at least the upper end face of the second cylinder 9, more specifically, the inner side wall of the third cylinder 11 abuts against the outer side wall of the second cylinder 9, and the step surface of the inner side wall of the third cylinder 11 abuts against the upper end face of the second cylinder 9; or the lower end surface of the third cylinder 11 is abutted against the upper end surface of the second cylinder 9. The inner diameters of the third cylinder 11 and the second cylinder 9 at the abutting position are the same; further, the third cylinder 11 has the same inner diameter as the second cylinder 9.

The upper end surface of the first cylinder 8 is positioned in the third cylinder 11; or the upper end surface of the first cylinder 8 is flush with the upper end surface of the third cylinder 11; or, the upper end surface of the first cylinder 8 is higher than the upper end surface of the third cylinder 11.

The tail of the connecting blade 10 exceeds the upper end surface of the third cylinder 11 or is flush with the upper end surface of the third cylinder 11.

The third cylinder 11 is sleeved outside the second cylinder 9, the inner wall of the third cylinder 11 is in interference fit with the connecting blade 10, or the third cylinder 11 is in interference fit with the second cylinder 9, or the third cylinder 11 is in interference fit with both the second cylinder 9 and the connecting blade 10, or the third cylinder 11 is connected with the second cylinder 9 through a screw and is in interference fit with the connecting blade 10 to fix the motor 501; when the third cylinder 11 and the second cylinder 9 are fixed by screws, the second cylinder 9 is provided with a lug, the third cylinder 11 is provided with a threaded hole matched with the lug, and the motor 501 is fixed on the third cylinder 11 by the lug, the threaded hole and the screws. And a sound insulation barrel made of a zinc material is wrapped outside the third barrel body 11. The fan unit 5 in this example is relatively bulky and is more suitable for being arranged within the housing 1.

The electric hair drier also comprises an air guide pipe 7, and the third cylinder body 11 is arranged in the air guide pipe 7.

The air guide pipe 7 is a silicone tube, and the third cylinder 11 is a high-temperature-resistant plastic part or a sound-absorbing metal part.

As can be understood, the gap M between the connecting blade and the third cylinder 11 is not greater than 2mm, in this case, the third cylinder 11 and the second cylinder 9 are connected, and when the motor 501 operates, the transmission of vibration is reduced due to the existence of the gap L; when the gap is larger than 2mm, a large installation space is required for installing the motor 501, so that the whole machine is heavy, or the guiding effect of the connecting blade 10 on the airflow is sacrificed.

In this case, "upper end" and "lower end" relate to the reference direction, the second cylinder 9 includes an air inlet side 13 and an air outlet side 14, the air flow enters the second cylinder 9 from the air inlet side 13 and is blown out from the air outlet side 14 of the second cylinder 9, and when the first cylinder 8 is disposed on the air outlet side 14 of the second cylinder 9, "upper end" refers to the end far away from the air outlet side 14; "lower end" means the end adjacent the air outlet side 14; the "upper end of the second cylinder 9" refers to the air outlet side 14 of the second cylinder 9, and the "lower end of the second cylinder 9" refers to the air inlet side 13 of the second cylinder 9. When the first cylinder 8 is arranged on the air inlet side 13 of the second cylinder 9, the "upper end" refers to the end far away from the air inlet side 13; "lower end" means the end near the air intake side 13; the upper end of the second cylinder 9 refers to the air inlet side 13 of the second cylinder 9, and the lower end of the second cylinder 9 refers to the air outlet side 14 of the second cylinder 9.

Example four:

the difference between the present embodiment and the third embodiment is that, as shown in fig. 17, the second cylinder 9 includes an air inlet side 13 and an air outlet side 14, and the first cylinder 8 is disposed on the air inlet side 13 of the second cylinder 9, in this case, the first cylinder 8 is closer to the air inlet 3, so as to reduce the wind resistance after the air flow is blown out from the air outlet side 14, and reduce the loss of the air volume and the air pressure; establish in the first barrel 8 rather than the third barrel 11 of being connected, rotor subassembly 16 is located in the third barrel 11, the internal diameter of first barrel 8 is greater than the external diameter of second barrel 9, the external diameter of third barrel 11 is less than the internal diameter of second barrel 9, can be to the reduction improvement wind pressure through the sectional area.

The third cylinder 11 can be connected with the second cylinder 9; or the third cylinder 11 is connected to the first cylinder 8. The first cylinder 8 and the second cylinder 9 may abut against each other end in the direction along the axis thereof (as shown in fig. 17); it is also possible that the first cylinder 8 is spaced apart from the second cylinder 9 in a direction along its axis.

The above embodiments are merely preferred embodiments of the present invention, not all embodiments of the present invention, and according to the principles of the present invention, those skilled in the art can make various modifications without departing from the spirit of the present invention, all of which shall fall within the scope of the present invention defined by the claims.

Claims

1. A high-speed motor comprises a rotor assembly and a stator assembly, and is characterized by further comprising fan blades and a bracket for supporting the rotor assembly and the stator assembly;

2. The motor of claim 1, wherein the clearance between the fan blades and the side wall of the second cylinder is D2, and D2 is greater than 0mm and less than or equal to 5 mm.

3. The motor as claimed in claim 1, wherein the distance between the edge of the fan blade close to the lower end of the second cylinder and the lower end of the second cylinder is D3, and D3 is 0mm or more and 10mm or less.

4. The motor of claim 1, wherein the first cylinder has an inner diameter D4, 1.5mm ≦ D4 < 20 mm.

5. The machine according to claim 1, wherein the thickness of the connecting blade is d, 0.1mm ≦ d ≦ 3 mm.

6. The machine of claim 1, wherein the number of connecting blades is N, 4 ≦ N ≦ 12.

7. The motor of claim 1 wherein the rotor assembly rotates at a speed n, 80000rpm ≦ n ≦ 130000 rpm.

8. The electric machine of claim 1 wherein the rotor assembly comprises a magnet positioned above the first cylinder and the magnet extends into the stator assembly.

9. The electric machine of claim 1 wherein the first cylinder, second cylinder and connecting blades are cast from metal.

10. A high speed hair dryer comprising a body assembly, a handle assembly connected to the body assembly, and a motor for generating an air flow through the appliance, wherein the motor is as claimed in any one of claims 1 to 9.