CN111528603A - High-speed electric hair drier - Google Patents

Abstract

The invention 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 electric hair drier which comprises a shell, a handle component connected with the shell, an air inlet, an air outlet, a fan unit used for sucking air flow from the air inlet into the electric hair drier and a heating unit used for heating the air flow, wherein the fan unit comprises fan blades and a motor used for driving the fan blades to rotate, the motor comprises a stator component and a rotor component, and the motor also comprises a bracket used for supporting the rotor component and the stator component; 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 arranged on one side of the second cylinder and is connected with the second cylinder through a connecting blade; the electric hair drier also comprises an air guide pipe, the second cylinder body comprises an air inlet side and an air outlet side, and the fan blades rotate to enable air flow to enter the second cylinder body from the air inlet side and enter the air guide pipe from the air outlet side.

Description

A high-speed hair dryer

technical field

The invention relates to the field of household appliances, in particular to a high-speed hair dryer.

Background technique

Hair dryers generally include a housing assembly and a handle assembly connected to the housing assembly, and a fan unit for drawing air into the interior of the hair dryer so that the hair dryer can be used to dry or style the hair. The fan unit includes a motor and a fan blade that is driven and rotated by the motor. The speed of the motor affects the wind pressure and air volume of the airflow blown by the hair dryer, which will directly affect the blowing efficiency. Most of the motor speed of the hair dryer on the market is around 20,000 rpm. Due to the influence of the performance of the motor itself, the air volume and air pressure generated by the hair dryer are limited.

Dyson patent CN201621361236.9 discloses a hand-held product using a high-speed motor, and the motor has a relatively large rotational speed, so it can generate large air volume and air pressure, but the motor itself mentioned in the patent has an air duct, and the motor itself has an air duct. Through casting, the air duct is inside the motor, and the accuracy is not easy to control, and the design accuracy of the air duct will affect the air volume and air pressure of the air blowing from the hair dryer. The air flow enters the handle assembly from the air inlet and then enters the inside of the casing. In order to facilitate the installation of the structural parts in the handle assembly, the handle assembly is divided into multiple parts. When each part is assembled together, there will be an assembly gap, which will cause air leakage; moreover, on the handle assembly Equipped with electronic devices, such as switches, in order to facilitate the use of users, the switches are arranged above the fan unit. The installation of the switches requires openings on the handle assembly, and the air flow will leak from the switch, resulting in the leakage of air volume and air pressure, and the setting of the sealing structure This in turn leads to increased assembly complexity. In addition, the air inlet is set on the handle assembly and blows out from the air outlet on the casing. When the air flow direction enters the casing, it needs to change about 90°. Due to the change of the air flow direction, air volume and wind pressure loss will occur. The wind guide structure can reduce the loss of air volume and wind pressure due to the change of air flow direction.

The motor used in the prior art is a brushed motor. Due to the limitation of the motor structure and the influence of the motor structure, a motor fixing structure is arranged in the housing assembly. There is an air duct to guide the airflow. The disadvantage of this structure is that the motor speed is not high, the motor volume is large, and the volume of the motor fixing structure is also large, which in turn leads to the large volume of the hair dryer, which is not easy to carry and store. .

SUMMARY OF THE INVENTION

In order to solve the problems in the prior art, the present invention provides a high-speed hair dryer.

The technical scheme of the present invention is as follows:

A high-speed hair dryer, comprising a casing, a handle assembly connected to the casing, an air inlet, an air outlet, a fan unit for drawing air flow from the air inlet into the interior of the hair dryer, a heating unit for heating the air flow, the fan The unit includes a fan blade and a motor for driving the fan blade to rotate, the motor includes a stator assembly and a rotor assembly, wherein the motor further includes a bracket for supporting the rotor assembly and the stator assembly;

The rotor assembly is connected with the fan blade and drives the fan blade to rotate; the bracket includes a first cylinder for supporting the rotor assembly and a second cylinder for accommodating the fan blade;

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

The hair dryer also includes an air duct, the second cylinder includes an air inlet side and an air outlet side, and the rotation of the fan blades makes the airflow enter the second cylinder from the air inlet side and enter the air duct through the air outlet side. .

Preferably, the second cylinder is located in the air duct.

Preferably, the air duct and the first cylinder define an air flow channel, and the rotation of the fan blade causes the air flow to enter the second cylinder from the air inlet side and enter the air flow channel through the air outlet side;

Alternatively, the air duct is also provided with a third cylinder connected to the bracket, the third cylinder and the first cylinder define an air flow channel, and the fan blade rotates to make the air flow from the air inlet side into the second cylinder The cylinder enters the air flow channel through the air outlet side.

Preferably, the inner diameter of the second cylinder is larger than the outer diameter of the first cylinder.

Preferably, the difference between the outer diameter of the first cylinder and the inner diameter of the second cylinder is D, and 1mm≤D≤50mm.

Preferably, a part of the first cylinder extends into the second cylinder;

Or, one end of the first cylinder body close to the air outlet side is flush with the air outlet side;

Alternatively, one end of the first cylinder body close to the air outlet side is located on the side of the air outlet side.

Preferably, one end of the connecting blade close to the air outlet side extends into the second cylinder;

Alternatively, one end of the connecting blade close to the air outlet side is flush with the air outlet side of the second cylinder.

Preferably, the distance between the edge of the fan blade close to the air outlet side and the air outlet side is L1, 0.1mm≤L1≤20mm.

Preferably, the stator assembly is located on one side of the end of the first cylindrical body away from the air outlet side, and the connecting blade is in an interference fit with the stator assembly.

Preferably, the rotor assembly includes a magnet, the magnet is located above the first cylinder, and the magnet extends into the interior of the stator assembly.

The beneficial effects of the present invention are:

1. The airflow sucked into the hair dryer by the fan unit is directly transported through the air duct. On the one hand, the air duct forms a seal, and the air entering the hair dryer from the air inlet is less likely to leak from the assembly gap, thereby reducing the air volume. and wind pressure loss; when there are electronic devices on the handle assembly, the assembly of the handle assembly and the electronic device does not need to be a separate sealing structure, which simplifies the structure; the air duct can also buffer the sound of the air flow in the main air duct, reducing Noise, shock absorption.

In addition, when the fan blade rotates, the airflow enters the air duct from the second cylinder, and the second cylinder rectifies the airflow drawn by the fan unit, effectively ensuring the air volume and pressure of the hair dryer, and reducing noise.

2. By placing the second cylinder in the air duct, the advantage is that the airflow entering the second cylinder enters the air duct from the air outlet side, and will not be affected by the axial direction between the second cylinder and the air duct. The gap produces air volume and air pressure loss, which effectively ensures the air volume and air pressure of the hair dryer and reduces noise; in addition, the vibration of the second cylinder can be isolated through the air duct to further reduce noise.

3. By defining the airflow channel between the air duct and the first cylinder, the advantages are that the structure is simple, the cost is low, the weight of the motor is light, and the weight of the whole machine is light, which improves the user experience;

The air duct is also provided with a third cylinder connected to the bracket, and the third cylinder and the first cylinder define an air flow channel. The advantage is that the air flow can be further rectified through the third cylinder to obtain The required air volume and air pressure, and at the same time, it is convenient to install and fix the motor.

4. By making the inner diameter of the second cylinder larger than the outer diameter of the first cylinder, the advantage is that it is convenient for the airflow to enter the air duct from the air outlet side of the first cylinder, and the first cylinder and the air duct can be connected. , or after the first cylindrical body and the third through-body are formed to form an air flow channel, the wind resistance on the flow path of the air flow is reduced, and the air volume is increased.

5. By making the difference between the outer diameter of the first cylinder and the inner diameter of the second cylinder to be D, 1mm≤D≤50mm, the advantage is that the wind resistance is reduced and the air volume is increased; when D<1mm, the process accuracy is required to be high, The process difficulty increases, the system is difficult to adapt, and the cost increases; when D>50mm, the volume of the motor increases, which is slightly bulky, the use experience and the aesthetics of the appearance are reduced, and the air volume and air pressure are reduced.

6. By extending a part of the first cylinder into the second cylinder, the advantage is to reduce the height of the motor and reduce the volume of the hair dryer;

Alternatively, one end of the first cylinder body close to the air outlet side is flush with the air outlet side, reducing wind resistance, increasing air volume, reducing the height of the motor, and reducing the volume of the hair dryer;

Alternatively, one end of the first cylinder body close to the air outlet side is located on the side of the air outlet side, so as to reduce wind resistance and increase air volume.

7. By extending the end of the connecting blade close to the air outlet side into the second cylinder, the advantage is that the connection length of the first cylinder and the second cylinder is increased, and the service life of the motor is prolonged;

By making the end of the connecting blade close to the air outlet side flush with the air outlet side of the second cylinder, the advantage is that a rectifying space can be freely set between the fan and the air outlet side to increase the wind pressure.

8. By making the distance between the edge of the fan blade close to the air outlet side and the air outlet side to be L1, 0.1mm≤L1≤20mm, the advantage is that the airflow entering the second cylinder is rectified at this distance to improve the airflow. When L1 < 0.1mm, effective rectification cannot be performed, the effect of wind pressure improvement is not obvious, and a part of the air without rectification may enter the air duct from the air outlet side and hit the inner wall of the air duct, resulting in air volume. Loss; when L1>20mm, the distance is too long, and the airflow accumulated in the second cylinder cannot enter the air duct smoothly, which affects the air intake.

9. When passing through, the stator assembly is located on the side of the first cylinder away from the end of the air outlet side, and the connecting blade is in an interference fit with the stator assembly, which improves the fixing reliability of the stator assembly and has a simple structure.

10. The rotor assembly includes a magnet, the magnet is located above the first cylinder body, and the magnet extends into the stator assembly, and the cooperation is more reliable, so that the rotor assembly drives the fan blade to rotate.

Description of drawings

FIG. 1 is a schematic structural diagram of the whole machine 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 at A in FIG. 2 .

FIG. 4 is a schematic diagram of the assembly of the motor and the air 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 cross-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 at 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 the motor according to the first embodiment of the present invention.

10 is an exploded view of the handle assembly of the hair dryer according to Embodiment 1 of the present invention.

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

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

13 is a cross-sectional view of the motor according to Embodiment 2 of the present invention.

FIG. 14 is a schematic structural diagram of the motor according to Embodiment 3 of the present invention.

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

16 is a cross-sectional view of the motor according to Embodiment 3 of the present invention.

17 is a cross-sectional view of the motor according to Embodiment 4 of the present invention.

The names of the parts marked in the figure are as follows:

1. Shell; 2. Handle assembly; 201, inner handle; 202, outer handle; 203, opening; 204, first inner handle; 205, second inner handle; 3, air inlet; 4, air outlet; 5, fan unit; 501, motor; 502, fan blade; 6, heating unit; 7, air duct; 8, first cylinder; 9, second cylinder; 10, connecting blade; 1001, arc segment; 1002, vertical Straight section; 1003, inner recess; 11, third cylinder; 12, airflow channel; 13, air inlet side; 14, air outlet side; 15, stator assembly; 16, rotor assembly; 1601, magnet.

Detailed ways

The content of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1:

As shown in Figures 1 to 11, a high-speed hair dryer includes a casing 1, a handle assembly 2 connected to the casing 1, an air inlet 3, an air outlet 4, and a fan for drawing air from the air inlet 3 into the interior of the hair dryer Unit 5, a heating unit 6 for heating the airflow, the fan unit 5 includes a fan blade 502 and a motor 501 for driving the fan blade 502 to rotate, the motor 501 includes a stator assembly 15 and a rotor assembly 16, wherein the The motor 501 further includes 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 includes a first bracket for supporting the rotor assembly 16. The cylinder body 8 and the second cylinder body 9 containing the fan blades 502; the first cylinder body 8 is provided on one side of the second cylinder body 9 and is connected with the second cylinder body 9 through the connecting blade 10; the hair dryer also Including the air duct 7, the second cylinder 9 includes the air inlet side 13 and the air outlet side 14, and the fan blade 502 rotates to make the airflow enter the second cylinder 9 from the air inlet side 13 and pass through the air outlet side 14. Enter the wind deflector.

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 material, preferably metal materials, especially aluminum, zinc and other materials.

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, and 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, and the air inlet side 13 is closer. Air inlet 3, when the fan blade 502 rotates, the air flow enters the second cylinder 9 from the air inlet 3, the air inlet 3 is located below the air inlet side 13 of the second cylinder 9, and the first cylinder 8 is located in the second cylinder 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 the axis of the housing 1, and the air inlet side 13 of the second cylinder 9 is closer to the inlet The tuyere 3 and the first cylinder 8 are located on the left side of the second cylinder 9 . In both cases, the air outlet 4 is arranged at the front end of the casing 1 .

It should be pointed out that "up", "down", "left" and "right" mentioned in the present invention are relative reference directions, when the reference changes, "up", "down" or "left", "right" Right" is interchangeable; "up" and "left", "down" and "right" may refer to the same direction.

The second cylindrical body 9 is located in the air duct 7, and the second cylindrical body 9 may be entirely located in the air duct 7, or may be partially located in the air duct 7; when the second cylindrical body 9 is entirely located in the air duct 7 When inside, one end of the air duct 7 close to the air inlet 3 is located above or on the left side of the air inlet 3, and the upper or left side depends on whether the air inlet 3 is arranged on the handle assembly 2 or on the housing 1. This solution enables the airflow entering the second cylinder 9 to directly enter the air duct 7, reducing wind resistance and reducing air volume loss. The air duct 7 and the first cylinder 8 define the airflow channel 12 , the fan blade 502 rotates so that the airflow enters the second cylinder 9 from the air inlet side 13 and enters the airflow channel 12 through the air outlet side 14 , and guides the air. The pipe 7 and the first cylindrical body 8 define an annular air flow channel 12 , which is guided through the inner wall of the air duct 7 and the outer wall of the first cylindrical body 8 to reduce the loss of air volume. The air guide tube 7 can be a silicone tube, and there is a gap between the connecting blade 10 and the silicone tube at this time; In cooperation, the airflow blown out from the second cylindrical body 9 is guided through the inner wall of the air duct 7 , the connecting blade 10 , and the outer wall of the first cylindrical body 8 .

Another possible variant of the solution is that there is a certain gap between the second cylindrical body 9 and the air duct 7 , that is, the second cylindrical body 9 is located outside the air duct 7 , and the second cylindrical body 9 is more than the air duct 7 . Close to air inlet 3.

Another possible variant of the solution is that the air duct 7 is further provided with a third cylinder 11 connected therebetween, the third cylinder 11 defines the airflow channel 12, and the fan blade 502 rotates to make The air flow enters the second cylinder 9 from the air inlet side 13 and enters the air flow channel 12 via the air outlet side 14 . The third cylindrical body 11 may be provided integrally with the air duct 7 , or may be provided separately from the air duct 7 . When the third cylinder 11 and the air duct 7 are integrally arranged, the third cylinder 11 is a high temperature resistant plastic part, the air duct 7 is a silicone tube, and the air duct 7 and the third cylinder 11 are injection molded One body; the temperature-resistant plastic parts are PA66+30GF, and the hardness of the silicone tube is 55 degrees and above to ensure that the air duct defined by the air duct 7 is not deformed. The advantage of using high temperature resistant plastic parts for the third cylinder body 11 is that it is convenient to make a structure on the third cylinder body 11 and to improve the assembly accuracy. It can be understood that the third cylinder 11 can also be a metal part, and the air duct 7 is a silicone tube. Preferably, the third cylinder 11 is made of zinc material for the purpose of reducing the working noise of the motor 501 . The third cylindrical body 11 and the air duct 7 are arranged separately, the third cylindrical body 11 is assembled with the bracket first, and then the motor 501 is installed into the air duct 7 .

The inner diameter of the second cylindrical body 9 is larger than the outer diameter of the first cylindrical body 8 , and the airflow is blown out from the air outlet side 14 and guided through the outer wall of the first cylindrical body 8 into the air duct 7 . The difference between the outer diameter of the first cylinder 8 and the inner diameter of the second cylinder 9 is D, 1mm≤D≤50mm, the advantage is that the wind resistance is reduced and the air volume is increased; when D<1mm, the process accuracy is high and the process is difficult. If it increases, the system will be difficult to adapt and the cost will increase; when D>50mm, the volume of the motor 501 will increase, which is slightly bulky, the use experience and the aesthetics of the appearance will decrease, and the air volume and air pressure will decrease. Preferably D=13mm. The inner diameter of the second cylinder 9 is D1, 20mm≤D1≤60mm, the advantage is that a suitable air volume can be obtained; when D1<20mm, the air volume obtained is low, which may not meet the demand; when D1>60mm, the volume of the motor 501 is too large , more bulky, and the cost increases. The inner diameter of the first cylinder 8 is D4, 1.5mm≤D4<20mm, the advantage is to provide installation space and support for the bearing of the rotor assembly 16 while increasing the air intake; when D4<1.5mm, due to technical limitations, find a suitable The size of the bearing is more difficult and the cost is increased; when D4>20mm, the wind resistance increases, causing the loss of the air volume and reducing the air volume. The outer diameter of the first cylinder 8 is D5, 3.5mm≤D5<23mm, the advantage is that it provides installation space for the bearing of the rotor assembly 16 and has sufficient strength support while increasing the air intake; when D5<3.5mm, due to technical However, it is difficult to find a suitable size bearing, which increases the cost. It is also possible that the wall thickness of the first cylinder body 8 is too thin to provide reliable support for the rotor assembly 16, and it is impossible to ensure that the fan blades 502 and the second cylinder body 9 cannot be guaranteed. The matching accuracy will affect the air volume and air pressure; when D5>23mm, the wind resistance will increase, resulting in a loss of air volume and reducing the air volume; preferably D1=28mm, D4=12mm; D5=15mm.

The gap between the fan blade 502 and the side wall of the second cylinder 9 is D2, 0mm<D2≤5mm, the advantage is to reduce noise and obtain larger wind pressure; when D2>5mm, the cavity is easy to release pressure, and wind noise big.

The distance between the edge of the fan blade 502 near the lower end of the second cylinder 9 and the lower end of the second cylinder 9 is L2, 0mm≤D3≤10mm, the advantage is to ensure the air intake, when D3>10mm, the unit time The air intake volume has a greater impact, which reduces the air intake volume per unit time and may not meet the demand.

A part of the first cylindrical body 8 extends into the second cylindrical body 9; or, the end of the first cylindrical body 8 close to the air outlet side 14 is flush with the air outlet side 14; or, the first cylindrical body The end close to the air outlet side 14 is located on the side of the air outlet side 14 . The distance between the outlet side 14 of the second cylinder 9 and the end of the first cylinder 8 close to the outlet side 14 is h, 0mm≤h≤5mm, the advantage is that the first cylinder 8 and the second cylinder are guaranteed 9, and occupy the inner space of the second cylinder 9 as little as possible; when h>5mm, the connection strength of the first cylinder 8 and the second cylinder 9 may become smaller, and it is easy to operate during the operation of the motor 501. Deformation occurs, which further affects the air volume and air pressure, or increases the volume of the second cylinder 9 , which increases the volume of the motor 501 and increases the required installation space.

One end of the connecting blade 10 close to the air outlet side 14 extends into the second cylinder 9 ; The distance between the lower end of the connecting blade 10 and the air outlet side 14 is H, 0≤H≤5mm. The advantage is that the connection strength of the first cylinder 8 and the second cylinder 9 is improved, so that the motor 501 can be connected during operation. The blade 10 is not easily deformed, reducing the influence on the air volume and wind pressure; when H > 5 mm, the connecting blade 10 needs to extend into the second cylinder 9, in order to avoid the interference between the connecting blade 10 and the fan blade 502, it will cause the first The volume of the second cylinder 9 increases, and the installation space occupied by the motor 501 increases. The height of the connecting blade 10 to the outer side wall of the first cylinder body 8 is H1, 3mm≤H1≤10mm, which improves the connection strength of the first cylinder body 8 and the second cylinder body 9, and at the same time enables the connecting blade 10 to play a certain guide flow When H1<3mm, the connection strength of the first cylinder 8 and the second cylinder 9 is not enough, and it is easy to deform during the working process; when H1>10mm, the volume of the motor 501 is increased, and the cost Increase. Preferably H1=8mm.

The connecting blade 10 includes an arc-shaped section 1001 close to the air outlet side 14 , and the arc-shaped section 1001 has an inner recess 1003 in the same rotation direction as the fan blade 502 . When entering the airflow channel 12, the loss of air volume is reduced. The connecting blade 10 also includes a vertical section 1002 connected with the arc section 1001, the vertical section 1002 is parallel to the centerline of the first cylinder 8, and the advantage is that the vertical section 1002 guides the airflow along the upper The direction of the cylinder center line blows out the airflow channel 12. When the motor 501 is installed inside the hair dryer, it is generally installed concentrically with the handle assembly 2 or with the housing 1. The vertical section 1002 is beneficial to reduce the loss of air volume and air pressure. The arc section 1001 and the vertical section 1002 smoothly transition.

The thickness of the connecting blade 10 is d, and 0.1mm≤d≤3mm. The advantage is that the connection strength of the first cylinder 8 and the second cylinder 9 is ensured while reducing wind resistance and air volume loss; when d < 0.1mm, The connecting blade 10 is too thin to ensure the connection strength of the first cylinder 8 and the second cylinder 9. Since the rotor assembly 16 is running at a high speed during the operation of the motor 501, the connecting blade 10 is easily deformed, thereby increasing the wind resistance, and possibly Change the airflow direction, resulting in the loss of air volume and wind pressure; when d>3mm, the wind resistance is large, and resonance is easy to occur. Preferably d=0.1 mm. The number of connecting blades 10 is N, 4≤N≤12, the advantage is to guide the airflow, obtain a suitable wind direction, reduce wind resistance, reduce air volume loss, and ensure the connection between the first cylinder 8 and the second cylinder 9 Reliability; when N<4, when the rotor assembly 16 works, a large torsion force is generated, which may cause the deformation of the connecting blade 10, thereby increasing the wind resistance, changing the airflow direction, and causing the loss of air volume and wind pressure; when N>12, the connection Too many blades 10 increase wind resistance and cause loss of air volume. 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, 0.1mm≤L1≤20mm, the advantage is that the airflow entering the second cylinder 9 is rectified at this distance to improve the airflow When L1<0.1mm, effective rectification cannot be carried out, the effect of wind pressure improvement is not obvious, and a part of the air that has not been rectified may enter the air duct 7 from the air outlet side 14 and hit the inner wall of the air duct 7 , resulting in loss of air volume; when L1 > 20mm, the distance is too long, and the airflow accumulated in the second cylinder 9 cannot smoothly enter the air duct 7, which affects the air intake. Preferably L1=2mm.

The distance between the edge of the fan blade 502 close to the air outlet side 14 and the end of the connecting blade 10 close to the air outlet side 14 is L2, 0.1mm≤L2≤20mm, the advantage is to obtain a suitable wind pressure, and through this distance, the entry into the first The air flow in the second cylinder 9 is rectified to reduce the air volume and wind pressure loss; when L2 < 0.1 mm, effective rectification cannot be performed, the effect of improving the wind pressure is not obvious, and some of the unrectified air flow may pass from the air outlet side. 14 Enter the air duct 7 and hit the inner wall of the air duct 7, resulting in a loss of air volume; when L2 > 20mm, the distance is too long, and the airflow gathers in the second cylinder 9 and cannot enter the air duct 7 smoothly. air intake. Preferably, L2=2mm.

The upper end of the connecting blade 10 exceeds the upper end surface of the first cylinder 8 to guide the airflow and reduce the loss of air volume. The stator assembly 15 is located at one end of the first cylinder 8 away from the air outlet side 14 On the side, the connecting blades 10 are arranged around the stator assembly 15 to miniaturize the motor 501. The connecting blades 10 and the stator assembly 15 are in an interference fit. The side walls of the stator assembly 15 are provided with grooves or ribs. The inner side of the 10 is provided with a matching rib or groove, and the stator assembly 15 is fixed through the interference fit between the groove and the rib. The advantages are that the structure is simple and the fixing is reliable. The rotor assembly 16 includes a magnet 1601 , the magnet 1601 is located above the first cylindrical body 8 , and the magnet 1601 extends into the interior of the stator assembly 15 . The rotational speed of the rotor assembly 16 is n, 80000rpm≤n≤130000rpm, to obtain a large air volume and air pressure, preferably n=11000rpm.

The first cylinder 8 , the second cylinder 9 and the connecting blade 10 are made of metal, preferably zinc alloy, which can absorb noise and reduce noise; or aluminum alloy, which is light in weight.

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

Alternatively, the handle assembly 2 includes an inner handle 201 and an outer handle 202 sheathed outside the handle assembly 2. The inner handle 201 includes a first inner handle 204201 and a second inner handle 205201 split along its axis direction. The motor 501 Set in the inner handle 201 .

Embodiment 2:

The difference between this embodiment and the first embodiment is that, as shown in FIGS. 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 provided on the second cylinder 9 on the inlet side 13.

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, and 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, and the air inlet side 13 is closer. Air inlet 3, when the fan blade 502 rotates, the air flow enters the second cylinder 9 from the air inlet 3, the air inlet 3 is located below the air inlet side 13 of the second cylinder 9, and the first cylinder 8 is located in the second cylinder 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 the axis of the housing 1, and the air inlet side 13 of the second cylinder 9 is closer to the inlet The tuyere 3 and the first cylinder 8 are located on the right side of the second cylinder 9 . In both cases, the air outlet 4 is arranged at the front end of the casing 1 .

In this example, a part of the first cylinder 8 extends into 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 first cylinder The end of the body 8 close to the air inlet side 13 of the second cylindrical body 9 is flush with the air intake side 13 of the second cylindrical body 9; or, the lower end of the first cylindrical body 8 is located above the second cylindrical body 9, that is, There is a certain gap 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 One end is flush with the air inlet side 13 of the second cylindrical body 9 .

The "upper end" and "lower end" are related to the reference direction. In this example, the "lower end" refers to the end close to the air inlet side 13, and the "upper end" refers to the end away from the air inlet 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 embodiment, and the second embodiment can be obtained by reversing the "up" and "down" directions in the first embodiment.

When the motor in this embodiment is arranged 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 arranged in the handle assembly 2 with reference to Embodiment 1. .

Embodiment three:

The difference between this embodiment and any of the above embodiments is that, as shown in FIGS. 14 to 16 , the hair dryer further includes a third cylinder 11 for fixing the motor 501 , the third cylinder 11 and the third cylinder 11 A cylinder 8 defines an air flow channel 12, and a third cylinder 11 is provided separately from the bracket. When the fan blade 502 rotates, the airflow entering the interior of the hair dryer from the air inlet 3 first enters the airflow channel 12 and then enters the second cylinder 9; or the airflow entering the interior of the hair dryer from the air inlet 3 first enters the second cylinder 9, Then enter the airflow channel 12 .

Further, the second cylinder body 9 includes an air inlet side 13 and an air outlet side 14 , and the fan blade 502 rotates so that the air flow enters the second cylinder body 9 from the air inlet side 13 and enters the airflow channel through the air outlet side 14 . 12.

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

The abutting portion at least abuts against the upper end surface 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 inner side wall of the third cylinder 11 The stepped surface abuts against the upper end surface of the second cylindrical body 9 ; or the lower end surface of the third cylindrical body 11 abuts against the upper end surface of the second cylindrical body 9 . The inner diameters of the third cylinder 11 and the second cylinder 9 at the abutting positions are the same; further, the inner diameter of the third cylinder 11 is the same as the inner diameter of the second cylinder 9 .

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

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

The third cylinder 11 is sleeved on the outside of the second cylinder 9, and the inner wall of the third cylinder 11 is in an interference fit with the connecting blade 10, or the third cylinder 11 is in an interference fit with the second cylinder 9, or the third cylinder The body 11 and the second cylinder body 9 and the connecting blade 10 are in an interference fit, or the third cylinder body 11 and the second cylinder body 9 are connected by screws and have an interference fit with the connecting blade 10 to realize the fixing of the motor 501; When the body 11 and the second cylinder body 9 are fixed by screws, the second cylinder body 9 is provided with lugs, the third cylinder body 11 is provided with threaded holes matched with the lugs, and the motor 501 passes through the lugs. The ears, threaded holes and screws are fixed on the third cylinder body 11 . The third cylinder body 11 is wrapped with a soundproof cylinder made of zinc material. The fan unit 5 in this example has a relatively large volume and is more suitable for being arranged in the casing 1 .

The hair dryer also includes an air duct 7 , and the third cylinder 11 is arranged in the air duct 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.

It can be understood that the gap M between the connecting blade and the third cylinder 11 is not greater than 2 mm. In this example, the third cylinder 11 and the second cylinder 9 are connected. When the motor 501 is working, due to the gap L Existing, reducing the transmission of vibration; when the gap is greater than 2mm, the installation of the motor 501 requires a large installation space, making the whole machine appear bulky, or sacrificing the guiding effect of the connecting blades 10 on the airflow.

In this example, "upper end" and "lower end" are related to the reference direction. The second cylinder 9 includes an air inlet side 13 and an air outlet side 14. The airflow enters the second cylinder 9 from the air inlet side 13, and flows from the second cylinder 9. The air outlet side 14 of the cylinder body 9 is blown out. When the first cylinder body 8 is set on the air outlet side 14 of the second cylinder body 9, the "upper end" refers to the end away from the air outlet side 14; the "lower end" refers to the The end close to 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 of the second cylinder 9 13. When the first cylinder 8 is provided on the air inlet side 13 of the second cylinder 9, the "upper end" refers to the end away from the air inlet side 13; the "lower end" refers to the end close to the air inlet side 13; The “upper end of the 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.

Embodiment 4:

The difference between this embodiment and the third embodiment is that, as shown in FIG. 17 , the second cylindrical body 9 includes an air inlet side 13 and an air outlet side 14 , and the first cylindrical body 8 is arranged on the side of the second cylindrical body 9 . The air inlet side 13, in this case, the first cylinder body 8 is closer to the air inlet 3, which reduces the wind resistance after the airflow is blown out from the air outlet side 14, and reduces the loss of air volume and wind pressure; the inside of the first cylinder body 8 The third cylinder 11 is connected to it, the rotor assembly 16 is arranged in the third cylinder 11, the inner diameter of the first cylinder 8 is larger than the outer diameter of the second cylinder 9, and the third cylinder 11 The outer diameter is smaller than the inner diameter of the second cylinder 9, which can increase the wind pressure through the reduction of the cross-sectional area.

The third cylinder 11 can be connected with the second cylinder 9 ; or the third cylinder 11 can be connected with the first cylinder 8 . The ends of the first cylinder 8 and the second cylinder 9 may abut against each other in the direction along their axis (as shown in Figure 17 ); it may also be that the first cylinder 8 and the second cylinder 9 separated by a certain distance in the direction.

The above-mentioned embodiments are only optimized implementations of the present invention, not all embodiments of the present invention. According to the principles of the present invention, those skilled in the art can make various modifications, as long as they do not depart from the spirit of the present invention, they belong to the scope of the present invention. the scope defined by the claims.

Claims (10)

1. A high-speed electric hair drier comprises a shell, a handle assembly connected with the shell, an air inlet, an air outlet, a fan unit used for sucking air flow from the air inlet into the electric hair drier, and a heating unit used for heating the air flow, wherein the fan unit comprises fan blades and a motor used for driving the fan blades to rotate, the motor comprises a stator assembly and a rotor assembly, and the high-speed electric hair drier is characterized by also comprising a bracket used 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 arranged on one side of the second cylinder and is connected with the second cylinder through a connecting blade;

the electric hair drier further comprises an air guide pipe, the second cylinder body comprises an air inlet side and an air outlet side, and the fan blades rotate to enable air flow to enter the second cylinder body from the air inlet side and enter the air guide pipe from the air outlet side.

2. The hair dryer of claim 1, wherein the second cylinder is positioned in the air guide duct.

3. The hair dryer of claim 2, wherein the air duct and the first cylinder define an air flow channel, and the fan blade rotates to make the air flow enter the second cylinder from the air inlet side and enter the air flow channel from the air outlet side;

or, still be equipped with in the air duct with the third barrel of leg joint, airflow channel is injectd to third barrel and first barrel, the flabellum is rotatory to make the air current from the air inlet side get into in the second barrel and via the air-out side entering airflow channel.

4. A hair dryer according to any of claims 1 to 3, characterized in that the inner diameter of the second cylinder is larger than the outer diameter of the first cylinder.

5. The hair dryer according to claim 4, characterized in that the difference between the outer diameter of the first cylinder and the inner diameter of the second cylinder is D, D is more than or equal to 1mm and less than or equal to 50 mm.

6. A hair dryer according to any of claims 1 to 3, characterized in that a part of said first cylinder protrudes into said second cylinder;

or one end of the first cylinder body close to the air outlet side is flush with the air outlet side;

or one end of the first cylinder, which is close to the air outlet side, is positioned at one side of the air outlet side.

7. The hair dryer according to any one of claims 1 to 3, wherein one end of the connecting blade near the air outlet side extends into the second cylinder;

or one end of the connecting blade close to the air outlet side is flush with the air outlet side of the second cylinder.

8. The hair dryer according to any of the claims 1 to 3, characterized in that the distance between the edge of the fan blade close to the air-out side and the air-out side is L1, 0.1mm L1 mm 20 mm.

9. The hair dryer according to any one of claims 1 to 3, wherein the stator assembly is positioned on one side of the end part of the first cylinder body far away from the air outlet side, and the connecting blade is in interference fit with the stator assembly.

10. The hair dryer of claim 9 wherein said rotor assembly includes a magnet, said magnet is located above the first cylinder, and said magnet extends into the interior of the stator assembly.

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