Hair drier
By optimizing the hair dryer structure and utilizing the interconnected design of the shroud and ventilation duct, the problems of fluid turbulence and insufficient airflow in high-speed hair dryers with vertically mounted motors have been solved, improving airflow uniformity and grip comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-03-27
AI Technical Summary
Existing high-speed hair dryers with vertically mounted motors suffer from problems such as fluid turbulence, uneven airflow, localized oxidation and aging of heating wires, insufficient airflow, and uncomfortable handle grip.
Design a hair dryer structure including an air outlet, heating element, shroud, PCBA, back cover, cover plate, and ventilation duct. Through the interconnected design of the shroud and ventilation duct, a negative pressure zone is formed to increase airflow, and the handle structure is optimized to reduce grip discomfort.
It increases airflow, improves wind speed uniformity, reduces the risk of oxidation and aging of the heating element, and enhances grip comfort.
Smart Images

Figure CN224038641U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hair dryer technical field especially relates to a hair dryer. BACKGROUND
[0002] At present, most of the high-speed hair dryers on the market have longitudinal motor (the motor is placed in the handle vertically), the air flow of the longitudinal motor hair dryer is inhaled from the bottom of the handle, and the air flow needs to pass through a 90-degree corner, thereby forming parallel air in the vertical direction of the handle. Fluid turbulence phenomenon will occur at the corner of the air flow, which will form a large internal resistance, affect the efficiency of the motor during operation, and also cause the uneven air speed of the fan-shaped area of the annular air outlet. The uneven air speed of the annular air outlet will also affect the uncontrollable local heating of the internal heating wire, and the local redness of the heating wire will cause the oxidation and aging speed of the area to be much higher than the whole, and the design life is reached earlier, and the quality of the whole machine is difficult to guarantee.
[0003] The high-speed hair dryer heating cylinder component on the market is generally divided into two structures, one of which adopts the same overall heating cylinder pipe component circular cross-section middle part through hollow structure of Dyson hair dryer; one of which adopts the front part hollow and the rear part completely closed structure of the heating pipe component. Due to the constraint of the first structure, the design of the main component heating pipe cylinder component is difficult to have room for development, and the final appearance of the hair dryer is often similar to that of Dyson, which is easy to leave consumers with the impression of imitation. Therefore, most of the current products are based on the structure of the second kind of front part hollow and rear part completely closed. Due to the special fluid mechanics of the air flow of the high-speed hair dryer air outlet, the tail of the middle through hollow structure of the heating cylinder will produce an air negative pressure area, and the fluid passing through the through hollow structure caused by negative pressure will supplement a large amount of gas to the air outlet of the heating cylinder, thereby increasing the overall air outlet of the air outlet to realize the gas flow effect. The rear part of the heating cylinder pipe body of the non-through hollow structure adopts a closed structure, which cannot produce an air negative pressure area at the tail, and cannot realize the gas flow effect. Therefore, under the condition of the same motor speed, the overall air volume of the closed structure on the market is much smaller than that of the through hollow structure.
[0004] There are MOSFET (MOSFET is abbreviated as MOS tube) for controlling the heating wire and U, V, W three-phase up-down bridge MOS tube for controlling the high-speed motor on the main board of the high-speed hair dryer. These two power devices will generate a large amount of heat during work, which will seriously affect the running stability and service life of the machine if the area where the main board is placed has poor heat dissipation performance. Most of the high-speed hair dryers with longitudinal motor place the main board behind the heating frame, that is, behind the flow guide plate. At this time, the flow guide plate component at the corner of the air duct needs to consider the corner air resistance, annular air outlet flow guide, main board heat dissipation and other functions, which has high requirements for the overall technology of the designer. In the case of unreasonable design, there will be many problems such as noise, air resistance, heat dissipation, etc., which will affect the use experience and product quality.
[0005] Since the high-speed hair dryer with the high-speed motor placed in the handle, the motor standard position diameter is 29MM, in order to improve the stability of the motor, a silicone sleeve is usually sleeved on the surface of the motor. When considering the thickness of the handle plastic glue, the mold draft of the tubular handle, and the sealing requirement of the handle pipe, a larger pipe diameter is required at the upper hand holding part of the handle, which is usually between 41-43MM. Considering the size of Asian hands, especially the main audience of the hair dryer is the female group, the handle is too large when using the 41-42MM handle of the high-speed hair dryer, and the grip feeling is not comfortable. The utility model discloses a hair dryer
[0006] The utility model discloses a hair dryer, which solves the technical problem that the airflow of the non-penetrating hollow structure of the hair dryer in the prior art cannot be increased.
[0007] In order to achieve the above-mentioned purpose, the technical scheme of the utility model provides a hair dryer, which comprises a hair dryer shell, the inside of the hair dryer shell is provided with an air outlet nozzle, a heating frame, a fairing, a PCBA, a rear cover and a cover plate arranged in sequence from front to back; the air outlet nozzle comprises a middle pipe and a sleeve, the middle pipe is arranged in the middle of the sleeve, an air outlet is arranged between the front end edge of the middle pipe and the front end edge of the sleeve, and the heating frame is arranged between the outer wall of the middle pipe and the inner wall of the sleeve; the middle part of the rear cover is provided with a ventilation pipe, the ventilation pipe is connected with the middle pipe, and an air inlet gap is formed between the front end face of the cover plate and the rear end face of the rear cover; the bottom of the hair dryer shell is provided with a hair dryer handle, the inside of the hair dryer handle is provided with a motor with a fan, the fairing is located above the hair dryer handle, and the motor can convey airflow upward to the fairing through the fan.
[0008] Further, the middle part of the rear cover gradually protrudes forward to form an annular convex surface, the middle part of the front end face of the cover plate gradually protrudes forward to form an annular convex surface, and the middle part of the rear cover extends into the inside of the ventilation pipe.
[0009] Further, the cover plate comprises a light-transmitting rear cover and a display panel, the light-transmitting rear cover is the front end face of the cover plate, and the display panel is the rear end face of the cover plate.
[0010] Further, the gap interval of the air inlet gap is 2-5mm, and an LED plate and a numeral tube are arranged between the light-transmitting rear cover and the display panel.
[0011] Further, the fairing is gradually convex forward from bottom to top, the bottom of the fairing is provided with a lower air hole, and the top of the fairing is provided with an upper air hole, which can guide the airflow to enter the rear of the fairing and can guide the airflow to exit the front of the fairing.
[0012] Further, the middle of the fairing is provided with a forward convex air guide pipe, and the upper side edge of the fairing is provided with a forward convex air guide plate edge; the bottom of the fairing is provided with a lower air guide curved surface, and the top of the fairing is provided with an upper air guide curved surface, which is located between the air guide pipe and the air guide plate edge, and the lower air hole and the upper air hole are arranged on the lower air guide curved surface and the upper air guide curved surface respectively.
[0013] Further, the heat frame fixing device is arranged between the air guide pipe and the heat frame, the rear end of the heat frame fixing device abuts against the air guide pipe, and the front end of the heat frame fixing device is clamped with the heat frame; the air guide plate edge abuts against the sleeve shell, the intermediate pipe passes through the heat frame, the heat frame fixing device and the air guide pipe in sequence from back to front, and the ventilation pipe passes through the PCBA from front to back.
[0014] Further, the middle of the rear end surface of the fairing is provided with a circular groove, and the edge of the circular groove is provided with a plurality of wire holes; the edge of the rear end surface of the fairing is provided with a plurality of screw columns, and the screw columns are screwed with the PCBA.
[0015] Further, the hair dryer handle comprises a handle shell and a handle inner shell, the handle inner shell is arranged in the interior of the handle shell, the motor is arranged in the interior of the handle inner shell, the bottom edge of the fairing is matched with the rear upper side edge of the handle inner shell through sealing silica gel, the lower part of the motor is sequentially provided with a rectifier net and a power line sleeve, the lower part of the handle shell is provided with an air inlet net cover, and the power line sleeve passes through the air inlet net cover downward.
[0016] Further, the handle shell is a circular pipe, the handle inner shell comprises a first half circular shell and a second half circular shell, two edges of the first half circular shell are respectively provided with vertically extending strip-shaped grooves, two edges of the second half circular shell are respectively provided with vertically extending convex strips, the strip-shaped grooves and the convex strips can be buckled, and the motor is located below the strip-shaped grooves and the convex strips.
[0017] To sum up, the technical scheme of the utility model has the following beneficial effects: the utility model has reasonable structure design, (1) the bottom of the hair dryer shell is provided with a hair dryer handle, the inside of the hair dryer handle is provided with a motor with a fan, a fairing is above the hair dryer handle, and the motor can send airflow upward to the fairing through the fan; when the motor works, the motor drives the fan to rotate, and the rotation of the fan drives the airflow below the hair dryer to be sent from the hair dryer handle to the fairing; (2) the inside of the hair dryer shell is provided with an air outlet nozzle, a heating frame, the fairing, a PCBA, a rear cover and a cover plate arranged in sequence from front to back; the air outlet nozzle comprises an intermediate pipeline and a sleeve, the intermediate pipeline is arranged in the middle of the sleeve, an air outlet is arranged between the front end edge of the intermediate pipeline and the front end edge of the sleeve, and the heating frame is arranged between the outer wall of the intermediate pipeline and the inner wall of the sleeve; the fairing can guide the airflow to move forward, then the airflow passes through the heating frame and is output outward from the air outlet, a pressure difference is formed between the air outlet and the intermediate pipeline, then the airflow in the intermediate pipeline is taken away outward by the air outlet under the action of the pressure difference, and negative pressure is formed in the whole intermediate pipeline; (3) the middle of the rear cover is provided with a ventilation pipe, the ventilation pipe is connected with the intermediate pipeline, and an air inlet gap is formed between the front end face of the cover plate and the rear end face of the rear cover; the airflow behind the hair dryer is filled into the intermediate pipeline through the air inlet gap and the ventilation pipe under the action of the negative pressure in the intermediate pipeline, and is taken out by the air outlet, and finally the airflow is increased. According to the above analysis, the utility model is a visual non-penetrating structure based on fluid mechanics, and the head cavity and the tail cavity are connected (i.e. the ventilation pipe is connected with the intermediate pipeline), so that the airflow increasing effect of the tail of the hair dryer is realized on the non-penetrating hollow structure, and the overall air volume of the air outlet is improved. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 is an explosion structure schematic view of the utility model;
[0019] Figure 2 is a cross-sectional structure schematic view of the utility model;
[0020] Figure 3 is Figure 2 the upper side area of the enlarged view of
[0021] Figure 4 is a cross-sectional structure schematic view of the utility model for showing airflow direction;
[0022] Figure 5 is a three-dimensional structure schematic view of the fairing of the utility model;
[0023] Figure 6 is a bottom view structure schematic view of the fairing of the utility model;
[0024] Figure 7It is a three-dimensional structure schematic diagram of the fairing showing airflow direction of the utility model;
[0025] Figure 8 It is a structure schematic diagram of the utility model in partial section;
[0026] Figure 9 It is a three-dimensional structure schematic diagram of the utility model when removing the handle shell and the second half shell;
[0027] Figure 10 It is a front view three-dimensional structure schematic diagram of the utility model;
[0028] Figure 11 It is a back view three-dimensional structure schematic diagram of the utility model;
[0029] Mark explanation: hair dryer shell (1), air outlet nozzle (2), heating frame (3), fairing (4), PCBA (5), back cover (6), cover plate (7), air inlet gap (8), hair dryer handle (9), motor (10), heating frame fixing device (11), sealing silica gel (12), iron ring (13), airflow direction (14);
[0030] Intermediate pipeline (201), sleeve (202), air outlet (203); Lower air hole (401), upper air hole (402), air guide pipe (403), air guide plate edge (404), lower air guide curved surface (405), upper air guide curved surface (406), circular groove (407), screw column (408); Ventilation pipe (601); Light-transmitting back cover (701), display panel (702), LED board (703), digital tube (704); Handle shell (901), handle inner shell (902), rectifier net (903), power cord cover (904), air inlet net cover (905), first half shell (906), strip-shaped groove (907), key module (908), second half shell (909). DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, but do not constitute the limitation to the protection scope of the utility model.
[0032] In the utility model, in order to describe more clearly, make the following explanation: the observer faces the attached Figure 1It should be noted that the terms "front end", "rear end", "left side", "right side", "middle", "upper", "lower" and the like in the text indicate the orientation or position relationship based on the orientation or position relationship set in the drawings, and are only for the purpose of clearly describing the utility model, and do not indicate or imply that the structure or parts must have a specific orientation or be constructed in a specific orientation, so it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", "fourth" are only for the purpose of clarity or simplification of description, and cannot be understood as indicating or implying relative importance or quantity.
[0033] Referring to Figures 1 to 11The embodiment provides a hair dryer, which comprises a hair dryer shell 1, the inside of the hair dryer shell 1 is provided with an air outlet nozzle 2, a heating frame 3, a fairing 4, a PCBA 5, a rear cover 6 and a cover plate 7 which are sequentially arranged from front to back; the air outlet nozzle 2 comprises a middle pipeline 201 and a sleeve 202, the middle pipeline 201 is arranged in the middle of the sleeve 202, an air outlet 203 is arranged between the front end edge of the middle pipeline 201 and the front end edge of the sleeve 202, and the heating frame 3 is arranged between the outer wall of the middle pipeline 201 and the inner wall of the sleeve 202; the middle part of the rear cover 6 is provided with a ventilation pipe 601, the ventilation pipe 601 is connected with the middle pipeline 201, and an air inlet gap 8 is formed between the front end face of the cover plate 7 and the rear end face of the rear cover 6; the bottom of the hair dryer shell 1 is provided with a hair dryer handle 9, the inside of the hair dryer handle 9 is provided with a motor 10 with a fan, the fairing 4 is located above the hair dryer handle 9, and the motor 10 can send air flow upwards to the fairing 4 through the fan. Effects: (1) the bottom of the hair dryer shell is provided with the hair dryer handle, the inside of the hair dryer handle is provided with the motor with the fan, the fairing is located above the hair dryer handle, and the motor can send air flow upwards to the fairing through the fan; therefore, when the motor works, the motor drives the fan to rotate, and the rotation of the fan drives the air flow below the hair dryer to be sent from bottom to top from the hair dryer handle to the fairing. (2) the inside of the hair dryer shell is provided with the air outlet nozzle, the heating frame, the fairing, the PCBA, the rear cover and the cover plate which are sequentially arranged from front to back; the air outlet nozzle comprises the middle pipeline and the sleeve, the middle pipeline is arranged in the middle of the sleeve, an air outlet is arranged between the front end edge of the middle pipeline and the front end edge of the sleeve, and the heating frame is arranged between the outer wall of the middle pipeline and the inner wall of the sleeve; therefore, the fairing can guide the air flow to turn to the front and continue to move, then the air flow passes through the heating frame and is output outward from the air outlet, pressure difference is formed between the air outlet and the middle pipeline, then, under the action of the pressure difference, the air flow in the middle pipeline is taken away outward by the air outlet, and thus negative pressure is formed in the whole middle pipeline. (3) the middle part of the rear cover is provided with the ventilation pipe, the ventilation pipe is connected with the middle pipeline, and the air inlet gap is formed between the front end face of the cover plate and the rear end face of the rear cover; therefore, under the action of the negative pressure in the middle pipeline, the air flow behind the hair dryer passes through the air inlet gap and the ventilation pipe in sequence and is continuously filled into the middle pipeline, and then is taken out by the air outlet, and finally the gas flow is increased. As known from the above analysis, the utility model is a visual non-penetrating structure based on fluid mechanics, the first and last cavities are connected (namely the ventilation pipe is connected with the middle pipeline), so that the air flow increasing effect of the tail part of the hair dryer is realized on the seemingly non-penetrating hollow structure, and the overall air volume of the air outlet is improved.
[0034] Specifically, the middle part of the rear cover 6 gradually protrudes forward to form an annular convex surface, the middle part of the front end face of the cover plate 7 gradually protrudes forward to form an annular convex surface, and the middle part of the rear cover 6 protrudes into the inside of the ventilation pipe 601.
[0035] Specifically, the cover plate 7 comprises a light-transmitting back cover 701 and a display panel 702, the light-transmitting back cover 701 is the front end face of the cover plate 7, and the display panel 702 is the rear end face of the cover plate 7.
[0036] Specifically, the gap interval of the air inlet gap 8 is 2-5 mm, and the LED plate 703 and the nixie tube 704 are arranged between the light-transmitting back cover 701 and the display panel 702.
[0037] Specifically, the fairing 4 is gradually convex forward from bottom to top, the bottom of the fairing 4 is provided with a lower air inlet hole 401, and the top of the fairing 4 is provided with an upper air inlet hole 402, the upper air inlet hole 402 can guide the airflow to enter the rear of the fairing 4, and the upper air inlet hole 402 can guide the airflow to be discharged to the front of the fairing 4.
[0038] Specifically, the fairing 4 is gradually convex forward from bottom to top, the bottom of the fairing 4 is provided with a lower air inlet hole 401, and the top of the fairing 4 is provided with an upper air inlet hole 402, the upper air inlet hole 402 can guide the airflow to enter the rear of the fairing 4, and the upper air inlet hole 402 can guide the airflow to be discharged to the front of the fairing 4.
[0039] Specifically, the heat frame fixing device 11 is arranged between the air guide pipe 403 and the heat frame 3, the rear end of the heat frame fixing device 11 abuts against the air guide pipe 403, and the front end of the heat frame fixing device 11 is clamped with the heat frame 3; the air guide plate edge 404 abuts against the sleeve shell 202, the middle pipe 201 passes through the heat frame 3, the heat frame fixing device 11 and the air guide pipe 403 in sequence from back to front, and the ventilation pipe 601 passes through the PCBA 5 from front to back. Action: The heat frame fixing device 11 can realize the installation and fixation of the heat frame 3.
[0040] Specifically, the middle part of the rear end surface of the fairing 4 is provided with a circular groove 407, and the edge of the circular groove 407 is provided with a plurality of wire holes; the edge of the rear end surface of the fairing 4 is provided with a plurality of screw columns 408, and the screw columns 408 are screw-connected with the PCBA 5. Action: The PCBA has 4 wires with the motor, and 3-4 wires with the key module 908 (such as temperature control button, switch button, etc.), the introduction of the circular groove 407 will apply the wire slot to the above wires, and the smooth leading of the wires to the motor and the handle button can effectively reduce the air turbulence at the corner. One of the screw columns is combined with the PCBA wire, and the purpose is to reduce the air resistance.
[0041] Specifically, the hair dryer handle 9 includes a handle shell 901 and a handle inner shell 902, the handle inner shell 902 is arranged inside the handle shell 901, the motor 10 is arranged inside the handle inner shell 902, the bottom edge of the fairing 4 cooperates with the rear upper edge of the handle inner shell 902 through the sealing silica gel 12; the lower part of the motor 10 is sequentially provided with a rectifier net 903 and a power line sleeve 904, the lower part of the handle shell 901 is provided with an air inlet net cover 905, and the power line sleeve 904 passes through the air inlet net cover 905 downward. Action: The sealing silica gel 12 can avoid the air leakage of the fairing 4 downward to the hair dryer, so as to better guide the air, and a small part of air can flow into the space where the PCBA is arranged through the lower air hole 401 beside the sealing silica gel 12; and the rectifier net 903 can preliminarily rectify the air flow entering from the air inlet net cover 905.
[0042] Specifically, the handle shell 901 is a circular pipe, the handle inner shell 902 includes a first semicircular shell 906 and a second semicircular shell 909, two edges of the first semicircular shell 906 are respectively provided with vertically extending strip-shaped grooves 907, two edges of the second semicircular shell 909 are respectively provided with vertically extending protrusions, the strip-shaped grooves 907 and the protrusions can be buckled, and the motor 10 is located below the strip-shaped grooves 907 and the protrusions. Action: The difference of the design is that the starting position of the strip-shaped groove protrusion from the bottom to the top is at the motor air outlet, so that the thickness of the first semicircular shell 906 and the second semicircular shell 909 (preferably plastic) is reduced to about 2MM, thereby reducing the pipe diameter size of the top of the handle, and reducing the pipe diameter of the holding part above the handle, and the pipe diameter of the holding part is reduced to 39MM, without affecting the sealing function of the air duct.
[0043] As preferred, the front end edge of the intermediate pipe is provided with a plurality of annular air outlets between the front end edge of the sleeve shell, the front end edge of the sleeve shell is provided with an iron ring 13; and the air flow direction 14 in the figure can facilitate the person skilled in the art to intuitively understand the working principle, and through test comparison, the design can increase the air volume by 10%-15% (including test error) under the same conditions compared with the closed structure.
[0044] The above is the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements are also considered to be within the scope of protection of the present application.
Claims
1. A hair dryer comprising a hair dryer housing (1), characterized in that: The inside of the hair dryer shell (1) is provided with an air outlet nozzle (2), a heating frame (3), a fairing (4), a PCBA (5), a rear cover (6), and a cover plate (7) arranged in sequence from front to back; the air outlet nozzle (2) comprises a middle pipeline (201) and a sleeve shell (202), the middle pipeline (201) is arranged in the middle of the sleeve shell (202), an air outlet (203) is arranged between the front end edge of the middle pipeline (201) and the front end edge of the sleeve shell (202), and the heating frame (3) is arranged between the outer wall of the middle pipeline (201) and the inner wall of the sleeve shell (202); the middle part of the rear cover (6) is provided with a ventilation pipe (601), the ventilation pipe (601) is connected with the middle pipeline (201), and an air inlet gap (8) is formed between the front end face of the cover plate (7) and the rear end face of the rear cover (6); the bottom of the hair dryer shell (1) is provided with a hair dryer handle (9), the inside of the hair dryer handle (9) is provided with a motor (10) with a fan, the fairing (4) is located above the hair dryer handle (9), and the motor (10) can send air flow upward to the fairing (4) through the fan.
2. The hair dryer of claim 1, wherein: The middle part of the rear cover (6) gradually protrudes forward to form an annular convex surface, the middle part of the front end face of the cover plate (7) gradually protrudes forward to form an annular convex surface, and the middle part of the rear cover (6) protrudes forward into the inside of the ventilation pipe (601).
3. The hair dryer of claim 2, wherein: The cover plate (7) comprises a light-transmitting rear cover (701) and a display panel (702), the light-transmitting rear cover (701) is the front end face of the cover plate (7), and the display panel (702) is the rear end face of the cover plate (7).
4. The hair dryer of claim 3, wherein: The gap interval of the air inlet gap (8) is 2-5 mm, and an LED plate (703) and a number tube (704) are arranged between the light-transmitting rear cover (701) and the display panel (702).
5. A hair dryer according to any one of claims 1 to 4, wherein: The fairing (4) gradually protrudes forward from bottom to top, the bottom of the fairing (4) is provided with a lower air passage (401), the top of the fairing (4) is provided with an upper air passage (402), the upper air passage (402) can guide air flow to enter the rear of the fairing (4), and the upper air passage (402) can guide air flow to exit the front of the fairing (4).
6. The hair dryer of claim 5, wherein: The middle part of the fairing (4) is provided with a forwardly protruding air guide pipe (403), and the upper side edge of the fairing (4) is provided with a forwardly protruding air guide plate edge (404); the bottom of the fairing (4) is provided with a lower air guide curved surface (405), and the top of the fairing (4) is provided with an upper air guide curved surface (406), the upper air guide curved surface (406) is located between the air guide pipe (403) and the air guide plate edge (404), and the lower air passage (401) and the upper air passage (402) are arranged on the lower air guide curved surface (405) and the upper air guide curved surface (406) respectively.
7. The hair dryer of claim 6, wherein: The heat frame fixing device (11) is in abutment with the air guide pipe (403) at the rear end, and is clamped with the heat frame (3) at the front end; the air guide plate edge (404) is in abutment with the sleeve shell (202), the middle pipe (201) passes through the heat frame (3), the heat frame fixing device (11) and the air guide pipe (403) in turn, and the ventilation pipe (601) passes through the PCBA (5) forward.
8. The hair dryer of claim 7, wherein: The middle part of the rear end surface of the fairing (4) is provided with a circular groove (407), and the edge of the circular groove (407) is provided with a plurality of wire holes; the edge of the rear end surface of the fairing (4) is provided with a plurality of screw columns (408), and the screw columns (408) are screw connected with the PCBA (5).
9. A hair dryer according to any one of claims 1 to 4, wherein: The hair dryer handle (9) comprises a handle shell (901) and a handle inner shell (902), the handle inner shell (902) is arranged in the handle shell (901), the motor (10) is arranged in the handle inner shell (902), the bottom edge of the fairing (4) is matched with the rear upper edge of the handle inner shell (902) through sealing silica gel (12), and the lower part of the motor (10) is sequentially provided with a rectifier net (903) and a power line sleeve (904), the lower part of the handle shell (901) is provided with an air inlet net cover (905), and the power line sleeve (904) passes through the air inlet net cover (905) downward.
10. The hair dryer of claim 9, wherein: The handle shell (901) is a circular pipe, the handle inner shell (902) comprises a first semicircular shell (906) and a second semicircular shell (909), two edges of the first semicircular shell (906) are respectively provided with vertically extending strip grooves (907), two edges of the second semicircular shell (909) are respectively provided with vertically extending convex strips, the strip grooves (907) and the convex strips can be buckled, and the motor (10) is located below the strip grooves (907) and the convex strips.