A hands-free stand dryer

Abstract

The application discloses a handheld-free vertical hair dryer, which comprises a main machine assembly, two air outlet assemblies hinged to one side of the main machine assembly, each air outlet assembly being capable of rotating to adjust the air outlet angle, and a vertical support assembly detachably fixed to the lower end of the main machine assembly to support the vertical placement of the whole machine; the main machine assembly comprises a main machine shell, two hollow pipes are arranged side by side in the main machine shell, a fan and an electric heating assembly are arranged in each hollow pipe, and the two hollow pipes are communicated with the air inlet pipes of two three-way pipes; each air outlet assembly comprises an air outlet shell, two air cavities are arranged side by side in the air outlet shell, the air outlet shell is hinged to the two air outlet pipes of the three-way pipe, the two air outlet pipes of the three-way pipe are communicated with the two air inlets of the air cavities, and air is synchronously sent through two paths; air channel partitions are arranged in the two air cavities, and each air channel partition divides each air cavity into a first air channel and a second air channel which are independent of each other; and the application solves the problems of holding fatigue, small wind coverage and slow drying speed of long hair of the handheld hair dryer.

Description

Technical Field

[0001] This invention relates to the field of hair dryer technology, and specifically to a hands-free upright hair dryer. Background Technology

[0002] Hair dryers, also known as hair dryers, mainly rely on a fan to generate a high-speed airflow, which, together with a heating module to adjust the temperature, applies hot air to the hair, accelerating the evaporation of moisture from the hair surface and thus drying the hair.

[0003] Traditional handheld hair dryers require continuous hand-holding, which can easily cause arm pain and fatigue over time. They are also inconvenient for infants and the elderly to use independently, often requiring assistance from others. During use, the hands must be constantly engaged, preventing the use of other items while drying hair. The airflow angle and coverage rely on hand movements for adjustment, resulting in a small airflow coverage area and slow drying speed. Unstable hands can easily drop and damage the hair dryer, and the limited hand position makes it difficult to maintain a stable airflow distance and angle for extended periods, significantly impacting drying efficiency due to human error. Summary of the Invention

[0004] In order to solve the technical problems existing in the prior art, this application provides a hands-free upright hair dryer, which solves the problems of handheld hair dryers being tiring to hold, having a small airflow coverage area, and being slow to dry long hair.

[0005] A hands-free upright hair dryer includes a main unit assembly. Two air outlet components are hinged to one side of the main unit assembly, and each air outlet component can rotate to adjust the air outlet angle. A stand assembly is detachably fixed to the lower end of the main unit assembly for supporting the upright placement of the entire machine. The main unit assembly includes a main housing, inside which two hollow tubes are arranged side by side. Each hollow tube is equipped with a fan and an electric heating component. The two hollow tubes are connected to the air inlets of two T-shaped pipes. Each air outlet component includes an air outlet shell, inside which two air chambers are arranged side by side. The air outlet shell is hinged to the two air outlets of the T-shaped pipes, and the two air outlets of the T-shaped pipes are connected to the two air inlets of the air chambers, providing airflow simultaneously in two directions. Each air chamber is provided with an air duct partition, which divides each air chamber into an independent first air duct and a second air duct. The first air duct is connected to a first air outlet on the air outlet shell, and the second air duct is connected to a second air outlet on the air outlet shell.

[0006] In some embodiments, a baffle plate is provided between the two first air ducts, and the baffle plate is located in the air outlet housing at the end away from the three-way pipe; a housing central hole is provided through the middle of each air outlet housing, and there are at least two first air outlets provided on the side wall of the housing central hole at the end away from the three-way pipe; there are at least two second air outlets provided on the side wall of the housing central hole at the end close to the three-way pipe.

[0007] In some embodiments, the air outlet housing is hinged to the two air outlet pipes of the tee pipe via a hinge structure. The hinge structure includes a hinge plate disposed between the two air outlet pipes and hinge shafts disposed on both sides of the hinge plate. Each air outlet pipe is fitted with a sleeve, and a damping ring is fitted between the air outlet pipe and the sleeve. A bushing is axially disposed inside each sleeve and is fitted onto the hinge shaft. The two are locked together by fasteners. Two air outlet housing connecting pipes are arranged side by side on the air outlet housing, and an opening in the housing communicating with the central hole of the housing is formed between the two air outlet housing connecting pipes. The air outlet housing is detachably fixed to the two sleeves via the two air outlet housing connecting pipes.

[0008] In some embodiments, each sleeve has an air inlet notch at its first end and at least two snap-fit ​​blocks on the outer wall of its second end; each air casing connecting pipe has at least two snap-fit ​​grooves on its inner wall, each snap-fit ​​block is inserted into the snap-fit ​​groove for positioning, and each air casing connecting pipe has a retaining ring on its outer wall to fasten the air casing connecting pipe to the sleeve.

[0009] In some embodiments, a storage groove is provided on the side wall of the central hole of one of the housings, and a hair spreading plate is hinged in the storage groove. Multiple comb teeth are arranged side by side along the length direction on the hair spreading plate. The hair spreading plate can be rotated and stored in the storage groove or placed horizontally in the central hole of the housing.

[0010] In some embodiments, air inlets are provided at the rear end and both sides of the main housing. A filter and an air intake screen are detachably fixed to the air inlet at the rear end of the main housing. A static guide vane assembly is fixedly installed in each of the two air inlets on both sides of the main housing. The static guide vane assembly includes a central seat, an outer ring, and multiple static guide vanes connected between the central seat and the outer ring. The multiple static guide vanes are evenly distributed around the central seat and extend radially from the central seat to the outer ring. Each static guide vane is arranged at an angle relative to the radial direction. A circuit board mounting position is provided in the rear end of the main housing where the air inlets are provided.

[0011] In some embodiments, one end of the duct baffle extends toward one end of the tee pipe, and the other end of the duct baffle surrounds one side of the second air outlet, guiding the air to be discharged from the second air outlet.

[0012] In some embodiments, one end of the duct baffle extends toward one end of the tee pipe, and the other end of the duct baffle is fixed to the side wall of the wind deflector. The air is guided to be discharged from the first air outlet. An arc-shaped plate is also provided on the duct baffle, with one end of the arc-shaped plate surrounding one side of the second air outlet. The air is guided to be discharged from the second air outlet.

[0013] In some embodiments, the support assembly includes a base and a riser mounted on the base; the bottom of the main housing is provided with a connector, a locking sleeve is fitted on the connector, the upper end of the riser is inserted into the connector, and the riser and the connector are fastened together by the locking sleeve.

[0014] In some embodiments, a negative ion generator is installed inside the main housing, and the negative ion emitting electrode extends into the hollow tube; a detachable controller box is provided on the outer wall of the main housing; the air outlet shell includes an upper shell, a middle shell, and a lower shell, the upper shell and the lower shell are detachably fixed to the upper and lower ends of the middle shell, and the first air outlet and the second air outlet are both detachably fixed with air outlet grilles.

[0015] The beneficial effects of this application are as follows: The detachable stand assembly allows for hands-free operation, making it suitable for the elderly and infants, with a wider range of applications. The dual independent fans and electric heating components can work independently, offering good applicability and fast hair drying. The dual-hinged air outlet assembly can be rotated and adjusted to achieve top and side blowing, expanding the drying coverage and improving the drying efficiency of long hair. When not in use, it can be folded for storage, reducing the overall size of the machine. The combination of the central hole in the casing, the baffle plate, and the air duct partition reduces wind resistance, evenly distributes airflow, and reduces turbulent noise. Multi-directional air intake combined with static guide vanes achieves heat dissipation around the circuit board, extending the life of components.

[0016] Additional aspects and advantages of this application will continue to be set forth in the description which follows, in part from the description which follows, or may be learned by practice of this application. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0018] Figure 1 This is a schematic diagram of the front view of this application.

[0019] Figure 2 This is a frontal stereoscopic structural diagram of this application.

[0020] Figure 3 This is a rear-view 3D structural diagram after the support frame components have been removed.

[0021] Figure 4 This is a schematic diagram of the main unit after the front cover has been removed.

[0022] Figure 5 yes Figure 4 A schematic diagram of the cross-sectional structure.

[0023] Figure 6 This is a schematic diagram of the split structure of the host component.

[0024] Figure 7 This is a three-dimensional structural diagram of the air outlet assembly combined with the three-way pipe.

[0025] Figure 8 yes Figure 7 A schematic diagram of the split structure.

[0026] Figure 9 This is a three-dimensional structural diagram of a T-junction.

[0027] Figure 10 This is a three-dimensional structural diagram of the first embodiment of the air outlet component.

[0028] Figure 11 yes Figure 10 A schematic diagram of the split structure.

[0029] Figure 12 This is a three-dimensional structural diagram of the second embodiment of the air outlet component.

[0030] Figure 13 yes Figure 12 A schematic diagram of the split structure.

[0031] Figure 14 This is a schematic diagram of the installation structure of the paving board.

[0032] Figure 15 This is a schematic diagram showing the two air outlet components folded onto the main unit.

[0033] Reference numerals: Main unit component 1, main unit housing 100, hollow tube 101, fan 102, electric heating component 103, housing air inlet 104, filter screen 105, air intake screen 106, insertion pipe 107, locking sleeve 108; Air outlet component 2, air outlet shell 200, upper shell 200a, middle shell 200b, lower shell 200c, air cavity 201, air duct partition 202, arc plate 202a, first air duct 203, second air duct 204, first air outlet 205, second air outlet 206, housing central hole 207, air shell connecting pipe 208, housing opening 209, snap-fit ​​groove 210, fixing ring 21 1. Storage slot 212, central shaft 212a, hair spreading board 213, central shaft hole 213a, comb teeth 214, wind deflector 215; 3. Stand assembly 3, stand base 300, riser 301; 4. T-pipe 4, air inlet pipe 400, air outlet pipe 401, hinge plate 402, hinge shaft 403, sleeve 5, bushing 500, air inlet notch 501, snap-fit ​​block 502, damping ring 6, stationary guide vane assembly 7, center seat 700, outer ring 701, stationary guide vane 702, side plate 703, annular air inlet hole 704, circuit board mounting position 8, negative ion generator 9, controller box 10, air outlet grille 11, diverter plate 12. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] Reference Figures 1-15 A hands-free upright hair dryer includes a main unit 1, with two air outlet components 2 hinged to one side of the main unit 1. The two air outlet components 2 can rotate to adjust to a suitable air outlet angle. One air outlet component 2 can blow air downwards onto the hair from the top, while the other can blow air from the side of the hair, covering a larger drying area and allowing for faster and more convenient drying of long hair. (See also...) Figure 15 The two air outlet components 2 can also be folded and placed flat at the top and bottom of the main unit component 1, reducing volume and facilitating transportation and storage. A stand component 3 is detachably fixed to the bottom of the main unit component 1, supporting the entire unit to stand upright on the ground or tabletop. Therefore, users do not need to hold the hair dryer, making it convenient and effortless, freeing their hands so they can read or rest while drying their hair. It is also very suitable and user-friendly for infants, the elderly, and other users with limited strength. (See also...) Figures 4-6 The main unit component 1 includes a main unit housing 100, within which two hollow tubes 101 are arranged side by side. Each hollow tube 101 is equipped with a fan 102 and an electric heating component 103. The fan 102 is preferably a brushless DC high-speed fan, and the electric heating component 103 is preferably a PTC ceramic heating component. The PTC heating element is assembled with metal heat sink fins into a cylindrical module, which fits into the ventilation cavity of the hollow tube 101. It has constant temperature and self-limiting temperature characteristics, automatically reduces power when overheating, has a high safety factor, and heats up quickly with high heat conversion efficiency. The fan 102 delivers hot air by directly scouring the fins for heat exchange. It is equipped with two independent hollow tubes 101, allowing for independent temperature control. Each hollow tube 101 connects to the inlet pipes 400 of two three-way pipes 4. One end of each three-way pipe 4 extends outside the main housing 100. The outlet ends of the two hollow tubes 101 are arc-shaped to reduce air resistance. Sealing rings are installed at the connection points between the hollow tubes 101 and the three-way pipes 4. Sealing rings are also installed at other component connections to improve sealing performance. (See also...) Figures 7-13Each air outlet assembly 2 includes an air outlet housing 200, within which two air chambers 201 are arranged side-by-side. The air outlet housing 200 is hinged to two air outlet pipes 401 of the three-way pipe 4. The two air outlet pipes 401 are arranged horizontally and symmetrically. The two air outlet pipes 401 of the three-way pipe 4 are connected to the left and right air inlets of the air chambers 201 respectively, providing airflow simultaneously in two directions. Each air chamber 201 is provided with a duct baffle 202, which divides each air chamber 201 into two sections. The first air duct 203 and the second air duct 204 are independent of each other; the first air duct 203 is connected to the first air outlet 205 provided on the air outlet shell 200, and the second air duct 204 is connected to the second air outlet 206 provided on the air outlet shell 200; as described above, there are two air outlet components 2, and two air chambers 201 are provided in the air outlet shell 200 of each air outlet component 2, and each air chamber 201 is provided with an independent first air duct 203 and a second air duct 204. This application utilizes a vertical support structure and a dual-channel independent hot air system to achieve hands-free, wide-area, and efficient hair drying. The entire unit is vertically fixed by a detachable stand assembly 3, eliminating the need for user handling and freeing up hands, making it suitable for the general population, the elderly, and infants. The main unit assembly 1 contains two sets of independent hollow ventilation ducts arranged side-by-side. Each duct is equipped with a brushless DC high-speed fan and a PTC ceramic electric heating element, forming a dual-channel independent hot air generation unit. The PTC heating element, combined with metal heat sink fins, forms a cylindrical heat exchange module, featuring rapid heating, high heat conversion efficiency, and constant temperature self-limiting characteristics. Overheating automatically reduces power to ensure safe use. The dual air ducts support independent temperature control; the airflow generated by the fan 102 is heated by the heating element to form hot air, which is then distributed and transported through the three-way pipe 4, and connected to two hinged air outlet components 2. Each air outlet component 2 is divided into two independent air ducts by the air duct partition 202. The hot air is output from the corresponding air outlet through the split air duct. The two air outlet components 2 can be rotated and adjusted relative to the main unit to form top blowing and side blowing air paths respectively, which fully cover the hair area and greatly improve the drying efficiency of long hair. When not in use, it can be folded flat at both ends of the main unit to reduce the overall size and facilitate storage and transportation. The overall structure takes into account the drying efficiency, ease of use, safety and portability.

[0036] In some embodiments, a baffle plate 215 is provided between the two first air ducts 203. The baffle plate 215 is located inside the air outlet shell 200 at the end away from the three-way pipe 4. The two sides of the baffle plate 215 are curved, guiding the two airflows in the two first air ducts 203 to flow out from the corresponding first air outlets 205 located on both sides of the baffle plate 215. A housing central hole 207 is provided through the middle of each air outlet shell 200. The air outlet shell 200 and the housing central hole 207 are approximately elliptical, similar to the shape of a playground track, and can be used for... To reduce wind resistance; preferably, there are two first air outlets 205 arranged side by side on the side wall of the housing hole 207 at the end away from the three-way pipe 4; preferably, there are two second air outlets 206 arranged side by side on the side wall of the housing hole 207 near the end of the three-way pipe 4; preferably, the number of first air outlets 205 and second air outlets 206 is even, such as two, four, or six, and they are arranged symmetrically; the size of the first air outlets 205 and second air outlets 206 can be changed as needed to adapt to the air outlet range. This design incorporates a baffle plate 215 with curved sides between the two first air ducts 203 within the air outlet casing 200 at the end furthest from the T-pipe 4. The curved surfaces guide the airflow, directing the airflow within the two first air ducts 203 towards the first air outlets 205 on either side of the baffle plate 215, thus preventing the two airflows from colliding and interfering with each other and reducing internal vortices. A racetrack-shaped central hole 207 is opened in the middle of the air outlet casing 200, which effectively reduces airflow resistance, reduces air pressure loss, and improves airflow efficiency. Two sets of first air outlets 205 and two sets of second air outlets 206 are arranged side-by-side on the sidewalls at both ends of the central hole 207, respectively, furthest from and near the T-pipe 4. With two air outlets, the airflow enters through the three-way pipe 4 and can be output outward through the air outlets at both ends, realizing multi-channel airflow in different zones. The smooth transition of the inner wall of the racetrack-shaped casing hole 207 can reduce airflow turbulence and reduce operating noise. The paired air outlet layout at both ends makes the airflow distribution more uniform, avoids local airflow concentration, expands the airflow coverage area, and the simultaneous airflow of multiple channels can improve the overall airflow efficiency, reduce internal airflow vortex loss, and reduce energy consumption. At the same time, the symmetrical and side-by-side air outlet structure is conducive to the stable internal airflow diversion, alleviates the problem of uneven air pressure, improves the overall blowing performance of the machine, and has a simple structure that is easy to process into a single unit, reducing production and manufacturing costs.

[0037] In some embodiments, the air outlet housing 200 is hinged to the two air outlet pipes 401 of the three-way pipe 4 via a hinge structure. The hinge structure includes a hinge plate 402 disposed between the two air outlet pipes 401 and hinge shafts 403 disposed on both sides of the hinge plate 402. The hinge plate 402 is also called a mounting plate, and the hinge shaft 403 is also called a mounting shaft. Each of the two air outlet pipes 401 is fitted with a sleeve 5, and a damping ring 6 is fitted between the air outlet pipe 401 and the sleeve 5. A bushing 500 is axially disposed inside each sleeve 5, and the bushing 500 is fitted onto the hinge shaft 403. The two are locked together by fasteners, including screws, bolts, and other threaded connectors. Two air outlet housing connecting pipes 208 are arranged side by side on the air outlet housing 200. An opening 209 communicating with the central hole 207 of the housing is formed between the two air outlet housing connecting pipes 208. The air outlet housing 200 is detachably fixed to the two sleeves 5 through the two air outlet housing connecting pipes 208. This design employs a hinged structure to achieve hinged rotation between the air outlet casing 200 and the three-way pipe 4. The hinge plate 402 and hinge shaft 403, along with the bushing 500, are locked in place by fasteners, allowing for adjustment of the air outlet casing 200's air delivery angle. A damping ring 6 is installed between the air outlet pipe 401 and the sleeve 5 to provide damping during rotation, enabling the air outlet casing 200 to hover and position itself after angle adjustment, preventing it from deflecting on its own. The air outlet casing 200 is detachably fixed to the sleeve 5 via two air outlet casing connecting pipes 208, facilitating easy assembly, maintenance, and replacement. An opening 209 is provided between the two air outlet casing connecting pipes 208, providing clearance for the assembly of the air outlet casing connecting pipes 208 and the sleeve 5, facilitating their alignment and connection. The hinged assembly is positioned between the two air outlet pipes 401, resulting in a compact structure with balanced stress, increased strength at the hinge, reduced shaking and loosening, and an overall structure that facilitates mold forming, simplifies assembly, controls production costs, and ensures normal airflow delivery, maintaining the overall air delivery performance of the machine.

[0038] In some embodiments, each sleeve 5 has an air inlet notch 501 at its first end, and two snap-fit ​​blocks 502 are symmetrically arranged on the outer wall of the second end of each sleeve 5; each air casing connecting pipe 208 has two snap-fit ​​grooves 210 symmetrically arranged on its inner wall, and each snap-fit ​​block 502 is inserted into the snap-fit ​​groove 210 for positioning. A fixing ring 211 is fitted onto the outer wall of each air casing connecting pipe 208, securing the air casing connecting pipe 208 to the sleeve 5. In this design, the air inlet notch 501 at the first end of the sleeve 5 ensures smooth airflow into the air casing connecting pipe 208, reducing air intake resistance. A snap-fit ​​block 502 is provided on the outer wall of the second end of the sleeve 5, and a corresponding snap-fit ​​groove 210 is provided on the inner wall of the fan housing connecting pipe 208. The snap-fit ​​block 502 is inserted into the snap-fit ​​groove 210 to achieve circumferential limiting and prevent relative rotation between the two. An external fixing ring 211 is sleeved on the outer wall of the fan housing connecting pipe 208. The fixing ring 211 can be an elastic plastic ring or a threaded locking ring, etc. It generates a clamping force through radial clamping to constrain the fan housing connecting pipe 208 and the sleeve 5, preventing axial loosening and separation, and completing quick assembly. The snap-fit ​​achieves pre-positioning and anti-rotation, and the fixing ring 211 radially clamps to prevent detachment. No screws are required, resulting in high assembly efficiency and convenient disassembly and maintenance. The structure is easy to injection mold, the connection is stable, the air duct is sealed, and the air outlet performance is stable.

[0039] In some embodiments, refer to Figure 3 , Figure 14 A storage groove 212 is provided on the side wall of the central hole 207 of the air outlet component 2 located at the lower end. A hair spreading board 213 is hinged in the storage groove 212. Multiple comb teeth 214 are arranged side by side along the length of the hair spreading board 213. Specifically, a central shaft 212a is provided at one end of the storage groove 212. The central shaft hole 213a at one end of the hair spreading board 213 can be rotatably sleeved on the central shaft 212a. The hair spreading board 213 can be rotated and stored in the storage groove 212 or placed horizontally in the central hole 207 of the housing. When not in use, the hair spreading board 213 is folded into the storage groove 212 to avoid taking up space. When in use, the hair spreading board 213 can be placed horizontally in the central hole 207 of the housing, and then the lower end of the hair can be passed through the central hole 207 of the housing and laid flat on the hair spreading board 213. This design incorporates a storage slot 212 on the side wall of the central hole 207 in the housing. The hair spreading plate 213 is hinged to the storage slot 212 via a central shaft, allowing it to be rotated for storage or unfolded horizontally. The hair spreading plate 213 features multiple comb teeth 214. When unfolded horizontally, it supports and flattens hair within the central hole 207 of the housing, while the comb teeth 214 comb and separate the hair strands, reducing hair clumping and facilitating even airflow to dry the hair, thus improving drying efficiency and making it more suitable for users with long hair. When not in use, the hair spreading plate 213 can be rotated and stored in the storage slot 212, without occupying the air duct space of the central hole 207 in the housing, and without affecting normal airflow. The overall appearance of the machine is simple. The hinged rotating structure allows for easy switching without additional disassembly; the hair spreading plate 213 is stored inside the housing, making it less susceptible to damage from impacts. The structure has a high degree of integration, and the housing can be molded as a single piece, facilitating manufacturing.

[0040] In some embodiments, refer to Figures 4-6 The main housing 100 has housing air inlets 104 at its rear end and both sides. The two housing air inlets 104 on both sides are symmetrically arranged. A filter screen 105 and an air intake screen 106 are detachably fixed to the housing air inlet 104 at the rear end of the main housing 100. The detachability can be achieved by snap-fit ​​or screw locking. A stationary guide vane assembly 7 is fixedly installed inside each of the two housing air inlets 104 on both sides of the main housing 100. The stationary guide vane assembly 7 includes a center seat 700, an outer ring 701, and multiple stationary guide vanes 702 connecting the center seat 700 and the outer ring 701. The outer side of the center seat 700 is provided with The system includes a side plate 703, with an annular air inlet 704 formed between the side plate 703 and the outer ring 701. Multiple stationary guide vanes 702 are evenly distributed circumferentially along the central seat 700, extending radially from the central seat 700 to the outer ring 701. Each stationary guide vane 702 is arranged at an angle relative to the radial direction. A circuit board mounting position 8 is located inside the rear end of the main housing 100, which has a housing air inlet 104. When the fan 102 is working, external air enters the housing and flows from the rear end and left and right sides of the circuit board to the front end, and then to the fan 102 and the electric heating assembly 103, providing comprehensive heat dissipation for the circuit board. In this design, the main housing 100 has housing air inlets 104 at both the rear end and sides, with symmetrical arrangement of the side air inlets. The rear air inlet is detachably fitted with a filter screen 105 and an air inlet screen 106, which can be fixed with clips or screws for easy disassembly and cleaning of dust and impurities, protecting internal components. Static guide vane assemblies 7 are installed at the air inlets on both sides. The radially inclined static guide vanes 702 can rectify the incoming airflow, straighten the airflow, reduce airflow turbulence and noise, and improve air intake efficiency. A circuit board mounting position 8 is set at the rear of the main unit housing 100. Multi-directional air intake allows airflow to flow from the rear, left and right sides of the circuit board to its front end, realizing multi-faceted surrounding heat dissipation of the circuit board. The heat dissipation is sufficient and uniform, effectively reducing the operating temperature rise of the circuit board, delaying the aging of electronic components, and improving the overall working stability and service life of the machine. Multi-position air intake increases the air intake area, reduces air intake resistance, and reduces noise. The rectification of the static guide vanes 702, combined with multi-way airflow heat dissipation, takes into account both air intake performance and electrical control heat dissipation requirements. The structure has a high degree of integration, which is conducive to housing processing and assembly.

[0041] In some embodiments, refer to Figure 10 , Figure 11The internal structure of the air outlet shell 200 of each air outlet component adopts the following technical solution: two independent and side-by-side air cavities 201 are formed in each air outlet shell 200. A duct baffle 202 is arranged longitudinally in each air cavity 201. Each duct baffle 202 divides each air cavity 201 into an independent first duct 203 and a second duct 204, which are arranged left and right. Specifically, one end of the duct baffle 202 extends towards the end of the three-way pipe 4 in the air cavity 201, and the other end of the duct baffle 202 is integrally formed and surrounds the inner sidewall of the air cavity 201 on one side of the second air outlet 206, guiding the air in the second duct 204 to be discharged from the second air outlet 206, realizing the convergence and guidance of airflow to be discharged from the second air outlet 206, reducing airflow back loss; the air in the first duct 203 is discharged from the first air outlet 205 located on both sides of the wind baffle 215.

[0042] In some embodiments, refer to Figure 12 , Figure 13 The internal structure of the air outlet housing 200 of each air outlet component adopts the following technical solution: Two independent and side-by-side air chambers 201 are formed within each air outlet housing 200. A duct baffle 202 is arranged laterally within each air chamber 201, dividing each air chamber 201 into an independent first duct 203 and a second duct 204, arranged vertically. Specifically, one end of the duct baffle 202 extends towards one end of the three-way pipe 4, and the other end of the duct baffle 202 extends... It is integrally formed on the side wall of the wind deflector 215. The air in the first air duct 203 is discharged from the first air outlet 205 located on both sides of the wind deflector 215. An arc-shaped plate 202a is also provided on the air duct partition 202 in the second air duct 204. One end of the arc-shaped plate 202a is integrally formed and surrounds one side of the second air outlet 206, guiding the air in the second air duct 204 to be discharged from the second air outlet 206, thereby converging and guiding the airflow to be discharged from the second air outlet 206 in a directional manner, reducing airflow backflow loss.

[0043] The two aforementioned technical solutions for the air duct baffles 202 in the air outlet shell 200, through the synergistic effect of the baffle 215 and the air duct baffles 202, guide the airflow within the air outlet shell 200 in zones, rationally distribute the air volume, balance the air outlet ratio and position of the first air outlet 205 and the second air outlet 206, reduce the air volume difference between each air outlet, and improve the uniformity of airflow. Simultaneously, they reduce airflow turbulence, lower wind resistance and operating noise, and improve wind energy utilization efficiency. Both the baffle 215 and the air duct baffles 202 can be integrally injection molded with the air outlet shell 200, resulting in fewer parts, a compact structure, simplified assembly processes, reduced processing costs, and stable overall airflow performance. In both of the above-mentioned air outlet shell 200 technical solutions, a diverter plate 12 is also vertically installed in each first air duct 203 and second air duct 204, preferably an arc-shaped piece that matches the shape of the air duct; the first end of the diverter plate 12 extends toward the air inlet end of the air duct, and the second end of the diverter plate 12 extends to the air outlet. Each diverter plate 12 divides each air duct into two independent side-by-side air guide slots. The diverter plate 12 and the air guide slots can further divert and sort the airflow in each air duct, disperse turbulence, reduce airflow eddies and local wind pressure loss, make the airflow distribution more uniform and stable, make the airflow from each air outlet smooth, reduce wind noise, improve airflow consistency, and at the same time constrain the airflow direction, reduce airflow erratic and backflow phenomena, improve wind pressure and wind energy utilization, improve the hair drying effect, and also help reduce the overall machine operating noise.

[0044] In some embodiments, the support assembly 3 includes a circular base 300 and a riser 301 mounted on the base 300. The riser 301 can be a single piece or multiple pieces connected together for easy height adjustment. A connector 107 is provided at the bottom of the main housing 100, and a locking sleeve 108 is fitted onto the connector 107. The upper end of the riser 301 is inserted into the connector 107, and the riser 301 is secured to the connector 107 by the locking sleeve 108. In this embodiment, the support assembly 3 consists of a base 300 and risers 301. A counterweight is installed inside the base 300 to prevent tipping. The riser 301 can be a single piece or multiple pieces connected together, enabling height adjustment to suit different usage scenarios. The connector 107 is provided at the bottom of the main housing 100, and the upper end of the riser 301 is inserted into the connector 107. The locking sleeve 108 secures the riser 301 to the connector 107. The plug-in assembly method is simple, and the locking sleeve 108 can hold and limit the connection, preventing the riser 301 from loosening or rotating from the main housing 100, ensuring a stable and reliable connection. The overall assembly and disassembly are convenient, facilitating the disassembly and storage of the entire machine. The riser 301's sleeve structure allows for easy height adjustment, flexibly changing the working height of the main unit. This structure has fewer parts, is simple in design, facilitates injection molding, reduces production costs, and improves product adaptability.

[0045] In some embodiments, a negative ion generator 9 is installed inside the main housing 100, with the negative ion emitting electrode extending into the hollow tube 101. A detachable controller box 10 is provided on the outer wall of the main housing 100, and the controller box 10 can be magnetically attached to the outer wall of the main housing 100. In this solution, the main housing 100 has a built-in negative ion generator 9, with the negative ion emitting electrode extending into the hollow tube 101. Negative ions can be output outward with the airflow of the air duct, acting on the hair strands to reduce static electricity and optimize the hair drying and conditioning effect. The controller box 10 is detachably assembled to the outer wall of the main housing 100 using a magnetic attachment method. The magnetic connection is simple to install and remove, requiring no screws or clips. When in use, it can be removed for handheld control; when not in use, it can be magnetically attached to the outer wall of the main housing 100 to prevent loss. In some embodiments, the air outlet housing 200 includes an upper housing 200a, a middle housing 200b, and a lower housing 200c. The upper housings 200a and 200c are detachably fixed to the upper and lower ends of the middle housing 200b. The first air outlet 205 and the second air outlet 206 are both detachably fixed with air outlet grilles 11. The air outlet housing 200 of this solution adopts a three-section detachable structure of upper housing 200a, middle housing 200b, and 200c, which facilitates internal assembly, disassembly, and dust removal. The first air outlet 205 and the second air outlet 206 are both detachably equipped with air outlet grilles 11, which can disperse the airflow and control the direction of the airflow towards the hair. The air outlet grilles 11 can be disassembled and cleaned separately. The segmented molding of the air outlet housing 200 is simple, and the assembly and maintenance are convenient.

[0046] Working principle: The whole machine is supported vertically by the stand assembly 3, which does not require hand-holding. External air enters through the rear end of the main unit housing 100 and the air inlets 104 on both sides of the housing. The filter screen 105 filters impurities, and the static guide vane assembly 7 rectifies and reduces noise of the intake air. The airflow flows through the circuit board surface in multiple paths to achieve surrounding heat dissipation, and then enters the interior of the two sets of hollow tubes 101 respectively. The fan 102 drives the airflow through the metal heat sink fins of the electric heating component 103 to complete heat exchange and form hot air. The two air ducts can be independently temperature controlled. The electric heating component 103 can be turned on or off. Cold or hot air is distributed to two air outlet components 2 after being split by the three-way pipe 4. One is located at the upper end and the other at the lower end, and the angles of both can be freely adjusted. The baffle 215 and the air duct partition 202 inside each air outlet shell 200 split and guide the airflow. The hot air flows to the first air outlet 205 and the second air outlet 206 respectively. The air outlet component 2 can be rotated to adjust the air outlet angle by means of the hinge structure. The damping ring 6 realizes the angle suspension and can realize top blowing and side blowing respectively, blowing the hair in all directions. The central hole 207 of the racetrack-shaped housing reduces the wind resistance. The hair spreading plate 213 can be unfolded to support long hair and improve the drying effect. When not in use, it can be stored in the storage slot 212. The emitting electrode of the negative ion generator 9 is placed inside the hollow tube 101. Negative ions are blown out with the hot air to eliminate static electricity in the hair. After use, the two air outlet components 2 can be folded flat at both ends of the main unit, and the stand component 3 can also be disassembled to reduce the overall size of the machine for easy storage and transportation.

[0047] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0048] It should be noted that the terms "a," "b," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0049] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A hands-free upright hair dryer, comprising: The host component is characterized by: Two air outlet components are hinged to one side of the main unit. Each air outlet component can rotate to adjust the air outlet angle. A stand assembly is detachably fixed to the lower end of the main unit to support the unit in an upright position. The main unit includes a main unit housing, inside which two hollow tubes are arranged side by side. Each hollow tube is equipped with a fan and an electric heating element. The two hollow tubes are connected to the air inlet pipes of two T-shaped pipes. Each air outlet assembly includes an air outlet housing, inside which two air chambers are arranged side by side. The air outlet housing is hinged to the two air outlet pipes of the three-way pipe, and the two air outlet pipes of the three-way pipe are connected to the two air inlets of the air chambers respectively, so that air is delivered synchronously in two directions. Each air chamber is provided with an air duct baffle, which divides each air chamber into an independent first air duct and a second air duct. The first air duct is connected to the first air outlet provided on the air outlet housing, and the second air duct is connected to the second air outlet provided on the air outlet housing.

2. The hands-free upright hair dryer as described in claim 1, characterized in that: A baffle plate is provided between the two first air ducts. The baffle plate is located inside the air outlet housing at the end away from the three-way pipe. A housing central hole is opened through the middle of each air outlet housing. There are at least two first air outlets and they are located on the side wall of the housing central hole at the end away from the three-way pipe. There are at least two second air outlets and they are located on the side wall of the housing central hole at the end close to the three-way pipe.

3. The hands-free upright hair dryer as described in claim 2, characterized in that: The air outlet casing is hinged to the two air outlet pipes of the three-way pipe via a hinge structure. The hinge structure includes a hinge plate disposed between the two air outlet pipes and hinge shafts disposed on both sides of the hinge plate. Each air outlet pipe is fitted with a sleeve, and a damping ring is fitted between the air outlet pipe and the sleeve. A bushing is disposed axially inside each sleeve, and the bushing is fitted onto the hinge shaft. The two are locked together by fasteners. Two air outlet casing connecting pipes are arranged side by side on the air outlet casing, and an opening in the casing communicating with the central hole of the casing is formed between the two air outlet casing connecting pipes. The air outlet casing is detachably fixed to the two sleeves via the two air outlet casing connecting pipes.

4. The hands-free upright hair dryer as described in claim 3, characterized in that: Each sleeve has an air inlet notch at its first end and at least two snap-fit ​​blocks on the outer wall of its second end. Each air casing connecting pipe has at least two snap-fit ​​grooves on its inner wall. Each snap-fit ​​block is inserted into the snap-fit ​​groove for positioning. Each air casing connecting pipe has a retaining ring on its outer wall to secure the air casing connecting pipe to the sleeve.

5. The hands-free upright hair dryer as described in any one of claims 2-4, characterized in that: A storage groove is provided on the side wall of the central hole of one of the housings. A hair spreading plate is hinged in the storage groove. Multiple comb teeth are arranged side by side along the length of the hair spreading plate. The hair spreading plate can be rotated and stored in the storage groove or placed horizontally in the central hole of the housing.

6. The hands-free upright hair dryer as described in claim 5, characterized in that: Air inlets are provided at the rear and sides of the main unit housing. A filter and an air intake screen are detachably fixed to the air inlet at the rear of the main unit housing. A static guide vane assembly is fixedly installed in each of the two air inlets on the sides of the main unit housing. The static guide vane assembly includes a central seat, an outer ring, and multiple static guide vanes connecting the central seat and the outer ring. The multiple static guide vanes are evenly distributed around the central seat and extend radially from the central seat to the outer ring. Each static guide vane is arranged at an angle relative to the radial direction. A circuit board mounting position is provided in the rear of the main unit housing where the air inlets are located.

7. The hands-free upright hair dryer as described in claim 2, characterized in that: One end of the duct partition extends toward one end of the T-junction, and the other end of the duct partition surrounds one side of the second air outlet, guiding the air to be discharged from the second air outlet.

8. The hands-free upright hair dryer as described in claim 2, characterized in that: One end of the duct partition extends toward one end of the tee pipe, and the other end of the duct partition is fixed to the side wall of the wind deflector. The air is guided to be discharged from the first air outlet. An arc-shaped plate is also provided on the duct partition. One end of the arc-shaped plate surrounds one side of the second air outlet, and the air is guided to be discharged from the second air outlet.

9. The hands-free upright hair dryer as described in claim 6, characterized in that: The support frame assembly includes a base and a riser mounted on the base; the bottom of the main housing is provided with a connector, a locking sleeve is fitted on the connector, the upper end of the riser is inserted into the connector, and the riser and connector are fastened together by the locking sleeve.

10. The hands-free upright hair dryer as described in claim 9, characterized in that: A negative ion generator is installed inside the main unit housing, and the negative ion emitting electrode extends into the hollow tube; a detachable controller box is provided on the outer wall of the main unit housing; the air outlet housing includes an upper shell, a middle shell, and a lower shell, with the upper and lower shells detachably fixed to the upper and lower ends of the middle shell, and air outlet grilles are detachably fixed to both the first and second air outlets.

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