High-speed mute electric hair drier

Abstract

The utility model discloses a high-speed silent electric hair drier which comprises a handheld part, an air outlet head arranged at the top of the handheld part and a fan assembly arranged in the handheld part, and the handheld part is provided with an installation area used for fixing and containing the fan assembly, a first air outlet channel located on the upper portion of the fan assembly and an air inlet channel located on the lower portion of the fan assembly. The air outlet head is provided with a second air outlet channel, and a heating assembly is arranged in the air outlet channel. The draught fan assembly comprises a draught fan, fan blades arranged at the bottom of the draught fan and a machine shell integrally arranged on the outer side of the draught fan, the machine shell is connected with the surface of the draught fan through flow deflectors, the flow deflectors extend above the fan blades of the draught fan in a cambered surface mode, and an air passing channel is defined between the machine shell and the surface of the draught fan. A shock absorption sleeve is further arranged outside the machine shell, the shock absorption sleeve is provided with a first matching part wrapping the outer surface of the machine shell and a second matching part abutting against the end of the machine shell, and the shock absorption sleeve is axially limited in the installation area and bears assembly extrusion acting force from the handheld part in the radial direction.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a high-speed silent hair dryer. Background Art

[0002] At present, high-speed hair dryers on the market are widely used due to their strong and stable wind output. While pursuing faster hair drying speed and better hair drying experience, noise control has also become an important consideration for high-speed battery hair dryers. The working noise of hair dryers mainly comes from the high-speed operation of the motor inside the hair dryer and the turbulent noise generated by air flow. These noises may not only affect the user experience, but also cause potential harm to hearing. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a high-speed silent hair dryer.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions: A high-speed silent hair dryer, comprising: a handheld part, an air outlet head arranged on the top of the handheld part, and a fan assembly arranged in the handheld part,

[0005] The handheld part has a mounting area for fixing and accommodating the fan assembly, a first air outlet channel located at the upper part of the fan assembly, and an air inlet channel located at the lower part of the fan assembly, a second air outlet channel is provided on the air outlet head, and a heating assembly is provided in the air outlet channel;

[0006] The fan assembly includes a fan, a fan blade disposed at the bottom of the fan, and a housing integrally disposed on the outside of the fan, wherein the housing is connected to the surface of the fan via a guide vane, and the guide vane extends in an arc shape above the fan blade and defines an air passage between the housing and the surface of the fan;

[0007] A shock-absorbing sleeve is also provided outside the casing, and the shock-absorbing sleeve has a first matching portion covering the outer surface of the casing, and a second matching portion abutting against the end of the casing. The shock-absorbing sleeve is axially limited in the installation area and radially bears the assembly extrusion force from the handheld part.

[0008] Furthermore, the handheld part is provided with an air duct component that is radially relative to the fan assembly, and the air duct components define the installation area, the air inlet channel and the first air outlet channel. The first matching part and the second matching part are arranged on the air duct component, and the air duct components are relatively engaged and apply an extrusion force of the shock-absorbing sleeve.

[0009] Furthermore, the air duct component is provided with a concave button area above the fan assembly, and a guide structure corresponding to the button area is provided in the first air outlet channel, the guide structure includes a plurality of inclined guide surfaces arranged in sequence with respect to the air outlet direction, and a straight guide surface connecting two adjacent inclined guide surfaces, and the inclined guide surface is arranged toward the inlet end of the second air outlet channel.

[0010] Furthermore, a vertically arranged groove is arranged on the outer surface of the air duct component, a circuit board is provided at the bottom of the handheld part, and the groove extends toward the circuit board and is arranged at intervals about the circumference of the air duct component.

[0011] Furthermore, a damping filling piece is provided outside the air duct component, the damping filling piece is embedded in the groove and abuts between the air duct component and the inner surface of the hand-held part, and the damping filling piece and the groove are also provided with ribs for restraining the damping filling piece and the wiring harness in the hair dryer.

[0012] Furthermore, the fan assembly also includes a guide ring located on the negative pressure surface of the fan, and the guide ring is provided with honeycomb-shaped flow diversion units.

[0013] Furthermore, the fan blades are arranged to rotate in the casing, and beam sections are provided between the end surface of the casing and the fan blades and guide vanes, and the ratio of the length of the guide vanes to the fan blades on the axis of the fan is 5:1.

[0014] Furthermore, an air inlet hole is provided at the bottom of the hand-held part, and a deflector is provided in the air inlet channel. The bottom of the deflector matches the outer diameter of the hand-held part and gradually converges along the air outlet direction. The smallest end outer diameter of the deflector matches the outer diameter of the fan body, and the interior of the deflector constitutes a cavity for connecting an electrical component.

[0015] Furthermore, the air guide cover includes a first convergence section that converges obliquely with respect to the air outlet direction, and a second convergence section that extends to the end of the first convergence section, the second convergence section is linearly arranged, and the outer diameter of the second convergence section matches the inner diameter of the fan blade.

[0016] Furthermore, an air inlet shell is provided at the bottom of the hand-held part, a plurality of air inlet holes are opened on the air inlet shell, and the outer diameter of the air inlet shell is larger than the outer diameter of the hand-held part. An air guide slope is provided between the air inlet shell and the hand-held part, and an air inlet section with a gradually decreasing cross-section is formed between the air guide slope and the air deflector.

[0017] Compared with the prior art, the utility model has the following advantages and beneficial effects: in the utility model, a casing is arranged on the outside of the fan, and a guide vane is arranged between the casing and the surface of the fan, the fan blade is located at the bottom of the fan, and the guide vane is located above the fan blade, and the arc-shaped guide vane can cut the incoming airflow and guide the airflow, thereby regulating the airflow and reducing the noise generated by the collision of the airflow around the fan;

[0018] A shock-absorbing sleeve is arranged on the outside of the fan, and the fan as a whole is axially limited by the shock-absorbing sleeve. The shock-absorbing sleeve is also axially limited and radially squeezed by relatively spliced ​​air duct components in the hand-held part. The shock-absorbing sleeve is always in a deformed and squeezed state, thereby reducing the assembly gap between the fan and the inner surface of the hand-held part, and further reducing the vibration noise of the fan during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model;

[0021] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0022] Figure 4 for Figure 2 The enlarged view of point B in the middle;

[0023] Figure 5 It is a schematic diagram of the cooperation between the shock-absorbing sleeve and the housing of the utility model;

[0024] Figure 6 It is an exploded view of the air duct component of the utility model;

[0025] Figure 7 It is a cross-sectional schematic diagram of the guide ring of the utility model;

[0026] Figure 8 A schematic diagram of a deflector cover of the utility model;

[0027] Fig. 9 It is a schematic diagram of the position of the sound insulation pad of the utility model;

[0028] Fig.10 Another embodiment of the shock absorbing sleeve of the utility model;

[0029] In the figure:

[0030] 1. Handheld part; 1.1. Installation area; 1.2. First air outlet channel; 1.3. Air inlet channel;

[0031] 2. Air outlet; 2.1. Second air outlet channel; 3. Heating component;

[0032] 4. Air outlet assembly; 4.1. Fan; 4.2. Fan blades; 4.3. Casing; 4.4. Guide vane; 4.5. Beam section;

[0033] 5. Wind passage; 7. Shock-absorbing sleeve; 7.1. First matching portion; 7.2. Second matching portion;

[0034] 8. Air duct components; 8.1. Channels; 8.2. Raised ribs;

[0035] 9. Flow guide member; 9.1. Inclined guide surface; 9.2. Straight guide surface;

[0036] 10. Button area; 11. Circuit board; 12. Damping filler; 13. Guide ring; 13.1. Diversion unit;

[0037] 14. fairing; 14.1. first convergence section; 14.2. second convergence section;

[0038] 15. Air inlet shell; 15.1. Air inlet hole; 15.2. Wind guide slope; 15.3. Air inlet section;

[0039] 16. Sound insulation pad; 17. Shrapnel; DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] It should be understood that although the terms upper, middle, lower, top, end, etc. appear in this article to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish elements from each other for easy understanding, and are not used to define any direction or order limitation.

[0042] like Figure 1-6 As shown, a high-speed silent hair dryer comprises:

[0043] A handheld part 1, an air outlet 2 arranged on the top of the handheld part 1, and a fan 4.1 component arranged in the handheld part 1,

[0044] The handheld part 1 has an installation area 1.1 for fixing and accommodating the fan 4.1 component, a first air outlet channel 1.2 located at the upper part of the fan 4.1 component, and an air inlet channel 1.3 located at the lower part of the fan 4.1 component. A second air outlet channel 2.1 is provided on the air outlet head 2, and a heating component 3 is provided in the second air outlet channel 2.1. Through the operation of the fan 4.1 component, a negative pressure is generated at the air inlet channel 1.3, and the air flow passes through the fan 4.1 component, the first air outlet channel 1.2 and the second air outlet channel 2.1 in sequence from the air inlet channel 1.3, and is heated in the second air outlet channel 2.1 to output hot air, or directly outputs cold air.

[0045] The fan 4.1 assembly includes the fan 4.1, the fan blades 4.2 arranged at the bottom of the fan 4.1, and the housing 4.3 arranged in an integral manner on the outer side of the fan 4.1. The housing 4.3 is connected to the surface of the fan 4.1 through a guide plate 4.4. The guide plate 4.4 extends above the fan blades 4.2 of the fan 4.1 in an arc shape. There are multiple guide plates 4.4, which are arranged in sequence and spaced about the circumference of the housing of the fan 4.1. The multiple guide plates 4.4 define an air passage 5 between the housing 4.3 and the surface of the fan 4.1. In this way, the airflow entering the air passage 5 from the air inlet channel 1.3 is first cut by the fan blades 4.2 and then enters the guide plate 4.4. It is further rectified under the guidance and diversion of the guide plate 4.4, and the airflow is oriented, thereby reducing the noise generated by the friction and collision between the airflow and the inner wall of the channel.

[0046] like Figures 3 to 5 As shown, a shock-absorbing sleeve 7 is further provided outside the casing 4.3, and the shock-absorbing sleeve 7 provides a limit for the fan 4.1 assembly. The shock-absorbing sleeve 7 has a first matching portion 7.1 coated on the outer surface of the casing 4.3, and a second matching portion 7.2 abutting against the end of the casing 4.3. The first matching portion 7.1 and the second matching portion 7.2 play a role in reducing noise and vibration during the operation of the fan 4.1 assembly. In the assembled state, the shock-absorbing sleeve 7 is axially limited in the installation area 1.1, and radially bears the assembly extrusion force from the hand-held part 1. At the same time, the shock-absorbing sleeve 7 is also axially pressed against the inner cavity of the hand-held part 1 under the action of the casing 4.3, thereby fixing the position of the fan 4.1 assembly, and at the same time compensating for the gap between the fan 4.1 assembly and the hand-held part 1, reducing the vibration noise of the fan 4.1 assembly during operation.

[0047] Combination Figure 6 As shown, in this embodiment, a duct member 8 is provided in the handheld portion 1, which is radially relatively engaged with the fan 4.1 component. The duct members 8 define an installation area 1.1, an air inlet channel 1.3 and a first air outlet channel 1.2. The first matching portion 7.1 and the second matching portion 7.2 are both in contact with the duct member 8. In the assembled state, the relative engagement of the duct member 8 exerts an extrusion force on the shock-absorbing sleeve 7. In addition, a first limiting step is also provided on the duct member 8, and the end of the shock-absorbing sleeve 7 is in contact with the first limiting step. At the same time, the shock-absorbing sleeve 7 is kept in an extruded posture, so that the second matching portion 7.2 between the second matching portions 7.2 at both ends can be biased toward the casing 4.3 side, and then closely fit on the casing 4.3, eliminating the assembly gap of the casing 4.3. In addition, under the assembly force of the relative engagement of the duct member 8, the shock-absorbing sleeve 7 is exerted with an extrusion force, so that the shock-absorbing sleeve 7 can further act on the fan 4.1 component.

[0048] Specifically, the inner diameter of the second matching portion 7.2 is smaller than the inner diameter of the first matching portion 7.1, so that a second limiting step is defined between the second matching portion 7.2 and the first matching portion 7.1, for the housing 4.3 of the fan 4.1 assembly to be placed therein for limiting.

[0049] As a further embodiment of the shock-absorbing sleeve 7, the wall thickness of the second matching portion 7.2 is greater than the wall thickness of the first matching portion 7.1, and the two second matching portions 7.2 connect the two ends of the first matching portion 7.1, and the first matching portion 7.1 is specifically located radially outside the second matching portion 7.2, so that the shock-absorbing sleeve 7 can be better guided to deform toward the housing 4.3 when bearing axial and radial extrusion forces.

[0050] Optionally, the outer diameter of the first matching part 7.1 is smaller than the inner diameter of the air duct component 8, thereby defining a certain gap between the outer surface of the first matching part 7.1 and the air duct component 8, so that the fan 4.1 component can overcome the shock-absorbing sleeve 7 and be assembled into the second limiting step of the first matching part 7.1 and the second matching part 7.2.

[0051] like Fig. 9 As shown, as a further improvement of the air duct component 8, the air duct component 8 is provided with a flexible sound insulation pad 16 corresponding to the first matching part 7.1, and the shock-absorbing pad corresponds to the gap between the first matching part 7.1 and the air duct component 8 to further reduce the noise of the fan 4.1 assembly.

[0052] like Fig.10 As shown, as a further modification of the shock-absorbing sleeve 7 for shock-absorbing the fan 4.1 assembly, a spring piece 17 is further embedded in the first matching portion 7.1 of the shock-absorbing sleeve 7, and the spring piece 17 has a tendency to bend toward one side of the casing 4.3, so that in the assembled state, after the shock-absorbing sleeve 7 receives the fan 4.1 assembly, the deformation of the shock-absorbing sleeve 7 and the spring piece 17 always give a force to hold the casing 4.3 tightly, thereby reducing the assembly gap of the fan 4.1 assembly and resisting the shaking of the fan 4.1 assembly during operation, wherein the end of the spring piece 17 corresponds to the second matching portion 7.2, and extends from the second matching portion 7.2 at one end to the second matching portion 7.2 at the other end.

[0053] like Figure 3As shown, as a further implementation of the air duct component 8, the air duct component 8 is provided with a concave button area 10 above the fan 4.1 component, and a guide structure corresponding to the button area 10 is provided in the first air outlet channel 1.2, and the other opposite air duct component 8 is provided with a straight surface with a regular outer diameter, and the guide structure includes a plurality of inclined guide surfaces 9.1 arranged in sequence with respect to the air outlet direction, and a straight guide surface 9.2 connecting two adjacent inclined guide surfaces 9.1, and the inclined guide surface 9.1 is arranged toward the inlet end of the second air outlet channel 2.1. Through the above improvements, the airflow output from the air passage 5 can be guided step by step by the plurality of inclined guide surfaces 9.1 and the straight guide surface 9.2 to form a direct current wind, thereby reducing the friction and collision of the airflow at the button area 10.

[0054] Among them, a straight guide surface 9.2 close to the inlet end of the second air outlet channel 2.1 occupies half of the axial length of the guide structure, thereby forming a regular air duct together with the opposite air duct component 8.

[0055] Specifically, a vertically arranged groove 8.1 is arranged on the outer surface of the air duct component 8, a circuit board 11 is provided at the bottom of the hand-held part 1, the groove 8.1 extends toward the circuit board 11, and is arranged at intervals around the circumference of the air duct component 8. One of the functions of the groove 8.1 is to provide lead arrangement for electrical components in the hair dryer. Since the air duct component 8 extends from the bottom of the hand-held part 1 to the air outlet 2, the second function of the groove 8.1 is to increase the structural strength of the air duct component 8 and effectively reduce the vibration of the air duct component 8 when the air is discharged at a high speed.

[0056] Preferably, the groove 8.1 on the air duct component 8 is arranged corresponding to the installation area 1.1 of the fan 4.1 component to further optimize the noise reduction effect of the fan 4.1 component.

[0057] like Figure 7 As shown, as an option, a damping filler 12 is further provided outside the air duct component 8, the damping filler 12 is embedded in the groove 8.1, and abuts between the air duct component 8 and the inner surface of the hand-held part 1, and a convex rib 8.2 is also provided in the groove 8.1 for restraining the damping filler 12 and the wiring harness in the hair dryer.

[0058] There are multiple grooves 8.1, some of which are used to arrange the leads, and other grooves 8.1 provide space for the damping filler 12. Of course, the damping filler 12 can also be arranged on the guide groove where the leads are arranged.

[0059] Preferably, the damping filling pieces 12 filled in the plurality of grooves 8 . 1 are integrally arranged to improve the tightness of the damping filling pieces 12 on the outside of the air duct component 8 .

[0060] Continue to refer to Figure 7Specifically, the fan 4.1 assembly further includes a guide ring 13 located on the negative pressure surface of the fan 4.1, and the guide ring 13 is provided with honeycomb-shaped flow diversion units 13.1.

[0061] As another implementation of the fan 4.1 component, the fan blades 4.2 are arranged to rotate in the casing 4.3, and beam sections 4.5 are provided between the end surface of the casing 4.3 and the fan blades 4.2 and the guide vanes 4.4. The beam sections 4.5 extend a certain distance at both ends of the casing 4.3, thereby orienting and regularizing the airflow entering and leaving the fan 4.1 component and reducing the dispersion of the airflow.

[0062] Furthermore, the ratio of the length of the guide plate 4.4 to the length of the fan blade 4.2 on the axis of the fan 4.1 is 5:1. By controlling the length of the guide plate 4.4, the homogenization effect on the airflow in the air passage 5 is ensured.

[0063] like Figure 8 As shown, in other embodiments, as a further improvement of the air inlet channel 1.3, an air inlet hole 15.1 is provided at the bottom of the hand-held portion 1, and a deflector 14 is provided in the air inlet channel 1.3. The bottom of the deflector 14 matches the outer diameter of the hand-held portion 1 and gradually converges along the air outlet direction. The smallest end outer diameter of the deflector 14 matches the outer diameter of the fan 4.1 body, and the interior of the deflector 14 constitutes a cavity for connecting electrical components. Through the above improvements, the deflector 14 provides a regular surface for the air inlet channel 1.3, guides the airflow entering the air inlet channel 1.3, and covers the circuit board 11 therein, thereby reducing the friction between the airflow and the electrical components on the circuit board 11.

[0064] Specifically, the air guide 14 includes a first convergence section 14.1 that converges obliquely with respect to the air outlet direction, and a second convergence section 14.2 that extends to the end of the first convergence section 14.1. The second convergence section 14.2 is linearly arranged, and the outer diameter of the second convergence section 14.2 matches the inner diameter of the fan blade 4.2. The air duct component 8 has a regular outer diameter in the air inlet channel 1.3. The airflow entering the air inlet channel 1.3 is guided by the first convergence section 14.1, and is guided by the second convergence section 14.2 to the effective air passage 5 of the guide ring 13 and the fan blade 4.2, so that the airflow path is smoother, thereby reducing high-frequency noise.

[0065] Specifically, an air inlet shell 15 is provided at the bottom of the handheld part 1, and a plurality of air inlet holes 15.1 are opened on the air inlet shell 15, and the outer diameter of the air inlet shell 15 is larger than the outer diameter of the handheld part 1, and an air guide slope 15.2 is provided between the air inlet shell 15 and the handheld part 1, and an air inlet section 15.3 with a gradually decreasing cross-section is formed between the air guide slope 15.2 and the air deflector 14, so that when the airflow enters the air inlet shell 15, the air inlet section 15.3 with a reduced diameter is further increased in flow velocity, and the diameter between the first convergent section 14.1 and the air inlet shell 15, and the diameter between the second convergent section 14.2 and the air duct component 8 are both larger than the diameter of the air inlet section 15.3, thereby achieving pressure reduction in the air inlet section 15.3 with a faster flow velocity and reducing the vibration at the air inlet shell 15, and the airflow at the second convergent section 14.2 quickly enters the air inlet channel 1.3 under the action of the airflow accelerated by the front, which is beneficial to the high-speed air outlet effect of the hair dryer.

[0066] In other embodiments, the top of the air guide cover 14 corresponding to the second focusing section 14.2 is open to allow the circuit board 11 inside to dissipate heat. In order to further increase the sound-absorbing and noise-reducing effect, a plurality of sound-absorbing holes may also be provided on the second focusing section 14.2.

[0067] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A high-speed silent hair dryer, characterized in that: include: A handheld part (1), an air outlet (2) disposed on the top of the handheld part (1), and a fan (4.1) component disposed in the handheld part (1). The handheld part (1) comprises a mounting area (1.1) for fixing and accommodating a fan (4.1) component, a first air outlet channel (1.2) located at the upper part of the fan (4.1) component, and an air inlet channel (1.3) located at the lower part of the fan (4.1) component, the air outlet head (2) is provided with a second air outlet channel (2.1), and a heating component (3) is provided in the air outlet channel; The fan (4.1) assembly comprises a fan (4.1), a fan blade (4.2) arranged at the bottom of the fan (4.1), and a casing (4.3) arranged in an integral manner on the outside of the fan (4.1); the casing (4.3) and the surface of the fan (4.1) are connected via a guide vane (4.4); the guide vane (4.4) extends in an arc shape above the fan blade (4.2) of the fan (4.1), and defines an air passage (5) between the casing (4.3) and the surface of the fan (4.1); A shock absorbing sleeve (7) is also provided outside the housing (4.3), and the shock absorbing sleeve (7) comprises a first matching portion (7.1) covering the outer surface of the housing (4.3), and a second matching portion (7.2) abutting against the end of the housing (4.3), and the shock absorbing sleeve (7) is axially limited in the installation area (1.1) and radially receives the assembly extrusion force from the handheld portion (1).

2. A high-speed silent hair dryer according to claim 1, characterized in that: The handheld portion (1) is provided with an air duct component (8) which is radially oppositely engaged with the fan (4.1) assembly, the air duct components (8) defining the installation area (1.1), the air inlet channel (1.3) and the first air outlet channel (1.2), the first matching portion (7.1) and the second matching portion (7.2) are arranged on the air duct component (8), and the air duct components (8) are relatively engaged and exert a squeezing force of the shock-absorbing sleeve (7).

3. A high-speed silent hair dryer according to claim 2, characterized in that: The air duct component (8) is provided with a concave button area (10) above the fan (4.1) component, and a guide structure corresponding to the button area (10) is provided in the first air outlet channel (1.2), the guide structure comprising a plurality of inclined guide surfaces (9.1) arranged in sequence with respect to the air outlet direction, and a straight guide surface (9.2) connecting two adjacent inclined guide surfaces (9.1), the inclined guide surface (9.1) being arranged toward the inlet end of the second air outlet channel (2.1).

4. A high-speed silent hair dryer according to claim 2, characterized in that: A vertically arranged groove (8.1) is arranged on the outer surface of the air duct component (8), a circuit board (11) is arranged at the bottom of the handheld part (1), and the groove (8.1) extends toward the circuit board (11) and is arranged at intervals with respect to the circumference of the air duct component (8).

5. A high-speed silent hair dryer according to claim 4, characterized in that: A damping filler (12) is also provided outside the air duct component (8), and the damping filler (12) is embedded in the groove (8.1) and abuts between the air duct component (8) and the inner surface of the hand-held part (1). The damping filler (12) and the groove (8.1) are also provided with a convex rib (8.2) for restraining the damping filler (12) and the wiring harness in the hair dryer.

6. A high-speed silent hair dryer according to claim 1, characterized in that: The fan (4.1) assembly further comprises a guide ring (13) located on the negative pressure surface of the fan (4.1), and honeycomb-shaped flow distribution units (13.1) are arranged on the guide ring (13).

7. A high-speed silent hair dryer according to claim 2, characterized in that: The fan blade (4.2) is arranged to rotate in the casing (4.3), and a beam section (4.5) is provided between the end surface of the casing (4.3) and the fan blade (4.2) and the guide vane (4.4), and the ratio of the length of the guide vane (4.4) to the fan blade (4.2) on the axis of the fan (4.1) is 5:

1.

8. The high-speed silent hair dryer according to claim 1, characterized in that: The bottom of the handheld portion (1) is provided with an air inlet hole (15.1), and the air inlet channel (1.3) is provided with a deflector (14). The bottom of the deflector (14) matches the outer diameter of the handheld portion (1) and gradually converges along the air outlet direction. The outer diameter of the smallest end of the deflector (14) matches the outer diameter of the fan (4.1) body, and the interior of the deflector (14) forms a cavity for connecting an electrical component.

9. A high-speed silent hair dryer according to claim 8, characterized in that: The air guide cover (14) comprises a first convergence section (14.1) that converges obliquely with respect to the air outlet direction, and a second convergence section (14.2) that extends to the end of the first convergence section (14.1), the second convergence section (14.2) being arranged linearly, and the outer diameter of the second convergence section (14.2) matches the inner diameter of the fan blade (4.2).

10. A high-speed silent hair dryer according to claim 9, characterized in that: An air inlet shell (15) is provided at the bottom of the handheld portion (1), a plurality of air inlet holes (15.1) are provided on the air inlet shell (15), and the outer diameter of the air inlet shell (15) is greater than the outer diameter of the handheld portion (1), an air guide inclined surface (15.2) is provided between the air inlet shell (15) and the handheld portion (1), and an air inlet section (15.3) with a gradually decreasing cross-section is formed between the air guide inclined surface (15.2) and the air deflector (14).

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