Hair drier with multiple independent air ducts

Abstract

The utility model relates to a blower with a plurality of independent air ducts, which is characterized in that a plurality of groups of independent air ducts are arranged in a shell, and a respective motor is arranged in each group of air ducts, so that fluid flow is independently formed in each group of fluid channels, and fluid flow speed can be increased by converging fluid at an air outlet, and meanwhile, the blowing area of the fluid is increased. The blowing area is larger, and meanwhile the fluid flow speed of the overlapping area is larger. An independent heating assembly is arranged in each fluid channel, fluid in each fluid channel can be independently heated, the multiple heating pieces are arranged in the radial direction of the fluid channels, the contact area between the fluid and the heating pieces is increased, the heating effect is improved, flowing of the fluid is not affected by the heating pieces, the heat transfer efficiency is higher, and heat energy is saved. The outer shell and the inner shell as well as the front cover and the rear cover are locked through the limiting structures and the clamping structures, assembly is simpler, locking and fixing can be achieved through fewer screws, cost is saved, and assembly is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of hair dryers, and more particularly to a hair dryer with multiple independent air ducts. Background Technology

[0002] Hair dryers, as common personal care appliances, primarily function to quickly dry and style hair through the combination of airflow and heat. Currently, most commercially available hair dryers employ a single-duct design, where airflow generated by the motor is delivered to the heating element via a single duct, and the heated air is then expelled from the outlet. However, this traditional structure has gradually revealed the following technical shortcomings in practical use:

[0003] 1. Limited Airflow Design and Drying Effect: Current hair dryers mostly rely on a single airflow duct to concentrate airflow, resulting in a small airflow coverage area and uneven airflow distribution. Especially in high-temperature mode, the concentrated hot air in a localized area can easily cause uneven heating of the hair strands, potentially damaging the hair cuticle. Furthermore, the single-duct structure makes it difficult to achieve efficient alternation of hot and cold air or zoned temperature control, limiting the functional expansion of hair dryers.

[0004] 2. Low efficiency of heating components, insufficient energy consumption and safety. Traditional heating elements mostly use spiral metal resistance wires, which have low heat conduction efficiency, require long preheating times, and pose a risk of overheating. Simultaneously, the single-duct structure results in short contact time between the airflow and the heating element, with some heat being carried away by the airflow before sufficient transfer, leading to energy waste. Furthermore, heating elements are often fixed inside the duct using bolts or clips, which not only makes assembly cumbersome but also makes connections prone to loosening due to vibration, affecting service life.

[0005] 3. Complex structure and high maintenance and production costs. Existing technologies address the issue of a single air duct by adding auxiliary air ducts, but these typically require additional guide vanes or independent drive modules, complicating the internal structure. This design not only increases the number of components and assembly difficulty but also raises production costs. Furthermore, the airflow interference problem between multiple air ducts remains unresolved. Utility Model Content

[0006] The technical problem this invention aims to solve is that existing hair dryers have a simple air duct design, limiting their blowing effect. Furthermore, their heating components are inefficient, resulting in certain deficiencies in energy consumption and safety. To address these shortcomings of the prior art, this invention provides a hair dryer with multiple independent air ducts.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A hair dryer with multiple independent air ducts is constructed, including a housing, a handle formed at the lower part of the housing, a control panel disposed inside the handle, and multiple sets of fluid channels formed at the upper part of the housing, with one side of the upper part of the housing being a fluid inlet and the other side of the upper part of the housing being a fluid outlet. The multiple sets of fluid channels are independent of each other, and each set of fluid channels includes a set of fluid inlets and fluid outlets. A drive unit is disposed in each set of fluid channels, and the drive unit causes fluid flow in the corresponding fluid channel.

[0009] Preferably, a heating assembly is provided between the fluid outlet and the drive unit. The heating assembly includes a heating element and a heating element fixing cylinder sleeved around the heating element. The fluid enters the heating element fixing cylinder and comes into contact with the heating element to heat the fluid.

[0010] Preferably, the heating element is arranged in the radial direction of the fluid within the fluid channel, and the heating element is configured in multiple groups, with the multiple groups of heating elements connected by a heating element fixing bracket.

[0011] Preferably, the heating element holder is provided with a heating element clamping groove, the heating element is inserted into the heating element clamping groove and connected to the heating element holder, and multiple sets of heating elements are evenly distributed in the fluid channel.

[0012] Preferably, the outer shell is further provided with an inner shell, the inner shell forming multiple sets of fluid channels, the inner shell is also provided with a motor drive board, the motor drive board is connected to a power drive board, the motor drive board is electrically connected to the drive unit in the fluid channels and controls the drive unit, the inner shell is provided with a fixing groove, the motor drive board is placed in the fixing groove, and the motor drive board covers each set of fluid channels.

[0013] Preferably, the inner shell includes an upper inner shell and a lower inner shell, which are connected by a snap-fit. An inner convex ring is provided inside the inner shell, and the driving unit is placed between the inner convex ring and the fluid inlet. An outer convex ring is provided on the outer wall of the inner shell, and a limiting rib is provided on the inner wall of the outer shell corresponding to the outer convex ring. The outer convex ring is placed between the limiting ribs to prevent the inner shell from moving along the fluid flow direction within the outer shell.

[0014] Preferably, the outer shell has a rear cover near the fluid inlet, the inner wall of the outer shell has a shell limiting block, the outer shell has a recess corresponding to the shell limiting block, the shell limiting block rotates in the recess, the outer shell also has an L-shaped slot, the rear cover of the outer shell has a shell clamping block corresponding to the L-shaped slot, when the shell limiting block rotates in the recess, the shell clamping block locks or unlocks with the L-shaped slot, so that the rear cover of the outer shell is connected or locked to the outer shell.

[0015] Preferably, an inner shell clamping block is also provided inside the outer shell rear cover, and an inner shell clamping groove is provided on the inner shell corresponding to the inner shell clamping block. An air inlet mesh is also provided between the outer shell rear cover and the outer shell, and an air inlet king clamping groove is provided on the air inlet mesh. An air inlet king limiting block is provided on the outer shell rear cover corresponding to the air inlet king clamping groove. The L-shaped groove includes an inclined side and a clamping position corresponding to the inclined side. A protruding rib is provided at the connection between the clamping position and the inclined side.

[0016] Preferably, the inner shell has a front cover facing the fluid outlet, and the outer wall of the front cover has a front cover limiting block. The inner shell has a first slot corresponding to the front cover limiting block. The outer shell has a front cover facing the fluid outlet, and an air outlet mesh is provided between the front cover and the inner shell. A conical air guide column is provided in the middle of the air outlet mesh. An air outlet mesh clamping groove is provided on the air outlet mesh. The inner shell has a front cover limiting block corresponding to the air outlet mesh clamping groove. The inner wall of the front cover also has a front cover limiting block and a front cover locking block. The outer wall of the outer shell has a first locking slot corresponding to the front cover limiting block and a second locking slot corresponding to the front cover locking block.

[0017] Preferably, the handle is provided with a button control panel and buttons corresponding to the button control panel. The buttons are connected to the handle through a handle button cover, and a handle sleeve is also provided on the outside of the handle.

[0018] The beneficial effects of this utility model are as follows: By setting multiple independent air ducts inside the outer shell, each with its own motor, fluid flow is achieved independently within each fluid channel. The fluids converge at the air outlet, increasing the fluid velocity and expanding the area over which the fluid is blown, resulting in a larger blowing area, more uniform airflow, and a higher fluid velocity in the overlapping area. Each fluid channel has an independent heating component, allowing for independent heating of the fluid within each channel. Each heating component can also be individually controlled, enabling one fluid channel to be hot air while another is cold air, or temperature compensation can be applied. Multiple heating elements are arranged radially along the fluid channels, increasing the contact area between the fluid and the heating elements, improving heating efficiency, and the heating elements do not obstruct fluid flow, resulting in higher heat transfer efficiency and energy savings. The outer shell and inner shell, as well as the front cover and rear cover, are locked together using limiting and locking structures, simplifying assembly and requiring fewer screws for locking and fixing, saving costs and making assembly more convenient. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of a hair dryer according to a preferred embodiment of the present invention;

[0021] Figure 2 This is a cross-sectional structural diagram of a hair dryer according to a preferred embodiment of the present invention;

[0022] Figure 3 This is an exploded view of a preferred embodiment of the hair dryer of the present invention.

[0023] Figure 4 This is a schematic diagram of the axial structure of the lower outer shell of a preferred embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of another axial side structure of the lower outer shell of a preferred embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the axial structure of the upper outer shell of a preferred embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the axial structure of the rear cover of the outer shell according to a preferred embodiment of the present utility model;

[0027] Figure 8 This is a schematic diagram of the axial structure of the air inlet mesh according to a preferred embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of the axial structure of the lower inner shell according to a preferred embodiment of the present invention.

[0029] Figure 10 This is a schematic diagram of the axial structure of the front cover of the outer shell according to a preferred embodiment of the present invention;

[0030] Figure 11 This is a schematic diagram of the axial structure of the air outlet mesh according to a preferred embodiment of the present invention;

[0031] Figure 12 This is a schematic diagram of the axial structure of the inner shell front cover of a preferred embodiment of the present invention;

[0032] Figure 13 This is a schematic diagram of the axial structure of the heating assembly according to a preferred embodiment of the present invention;

[0033] Figure 14This is an exploded structural diagram of the heating component according to a preferred embodiment of the present invention. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are some, but not all, embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] A preferred embodiment of this utility model is a hair dryer with multiple independent air ducts; such as Figures 1-3 As shown, the device includes a housing 10, with a handle 100 formed in the lower part and two sets of fluid channels 105 in the upper part. These two sets of fluid channels are independent of each other, and each set of fluid channels is equipped with a motor 20. The motor drives the fluid to enter the fluid channel 105 through the fluid inlet 106 and blow it out through the fluid outlet 107. To facilitate adjustment of the fluid temperature in the blown-out fluid channel, a heating element 30 is also installed in the fluid channel between the fluid outlet 107 and the motor 20. Heating the fluid before blowing it out improves the effect. Furthermore, because there are two sets of independent fluid channels, each set can operate independently or simultaneously. When operating simultaneously, the area of ​​fluid blowing out is increased, and the fluid velocity in the overlapping area is greater, resulting in better performance. To filter the fluid at the fluid inlet, an air inlet screen 700 is installed at the fluid inlet to prevent sheet-like objects from being sucked into the fluid channel. Simultaneously, an air outlet screen 60 is installed at the fluid outlet 107 to filter the fluid at the outlet, preventing large particles from being blown out. A power control board 80 and a button control board 400 connected to the power control board are installed on the handle. The button control board is driven by the button 40. A motor control board 201 connected to the power control board is also installed inside the housing. The motor control board controls two sets of motors. Control signals are transmitted to the power control board and then to the motor control board via the buttons to control the motor's operating status. It should be noted that this application only sets two independent fluid channels, but three or more sets of fluid channels can be set as needed, each with its own independent motor. The fluid channels can be arranged horizontally, vertically, or in a superimposed manner, etc. This application does not specify a particular arrangement of the fluid channels.

[0036] Specifically, such as Figures 3-6As shown, the outer casing 10 comprises a detachably connected upper casing 102 and a lower casing 104. The lower part of the lower casing forms a handle. The power control board 80 and the button control board 400 are placed inside the handle, and a handle button cover 103 is also provided on the handle. The button 40 is placed on the handle button cover and connected to the button control board. A handle sleeve 101 is also provided on the outside of the handle to connect and fix the handle button cover to the handle. A wiring hole 1042 is provided in the middle of the lower casing, through which the connection between the motor control board and the power control board can be arranged. To facilitate the disassembly and installation of the upper and lower outer shells, the lower outer shell is equipped with multiple sets of lower outer shell clips 1040, and the inner wall of the upper outer shell is equipped with multiple sets of snap-fit ​​grooves 1021 corresponding to the lower outer shell clips. The snap-fit ​​grooves are equipped with upper outer shell clips 1020, and the lower outer shell clips are equipped with corresponding slots for the upper outer shell clips. When the upper and lower outer shells are connected, the lower outer shell clips are placed in the snap-fit ​​grooves 1021, and the upper outer shell clips are locked with the slots, thus achieving a connection and locking between the upper and lower outer shells. The connection is located inside the upper and lower outer shells, making it relatively concealed and preventing the shells from being disassembled.

[0037] Furthermore, such as Figures 3-4 and Figure 9 As shown, to enhance the sealing of the fluid channels, an inner shell 200 is also provided within the upper part of the outer shell 10. The inner shell includes a detachably connected upper inner shell 202 and a lower inner shell 203. The upper and lower inner shells are locked in the same way as the outer shell, which will not be repeated here. The motor 200 and the heating element are both placed inside the inner shell. An inner convex ring 2032 is provided inside the inner shell to limit the motor, thereby restricting the distance between the motor and the fluid inlet and improving the air intake effect. A motor control board fixing slot 2031 is provided in the middle of the inner shell corresponding to the motor control board. The motor control board fixing slot connects multiple fluid channels. When the motor control board is placed in the motor control board fixing slot, each fluid channel contains a portion of the motor control board, facilitating the electrical connection between the motor control board and the motor, while not affecting the independent sealing of the fluid channels. To prevent the inner shell from moving in the radial direction of the fluid channel, an outer protruding ring 2030 is provided on the outer wall of the inner shell, and a limiting rib 1041 is provided on the inner wall of the outer shell corresponding to the outer protruding ring, thereby limiting the inner shell and preventing the inner shell from moving in the radial direction of the fluid channel.

[0038] Furthermore, such as Figure 1-9As shown, to facilitate the connection of the outer shell, the outer shell 10 is connected to the side near the fluid inlet 106 via the outer shell rear cover 70. The outer shell rear cover is provided with an inner shell clamping block 705, and the inner shell is provided with an inner shell clamping groove 2033 corresponding to the inner shell clamping block. The inner wall of the outer shell rear cover is also provided with an outer shell clamping block 703 and an outer shell limiting block 701. The length of the outer shell limiting block is greater than that of the outer shell clamping block. The outer shell near the fluid inlet is provided with a recess 1046 corresponding to the outer shell limiting block, and an L-shaped groove is provided corresponding to the outer shell clamping block. The outer shell limiting block can rotate in the recess, and the outer shell clamping block can be engaged in the L-shaped groove 1045. The L-shaped slot includes an inclined portion 10450 and a locking position 10452 connected to the inclined portion. A protruding rib 10451 is provided at the connection point of the locking position on the inclined portion. When the outer shell locking block contacts the inclined edge, the outer shell limiting block is positioned at one end of the recessed portion. Then, the outer shell rear cover is rotated. After the locking position contacts the protruding rib, a slightly larger rotational force is applied to cause the outer shell locking block to pass over the protruding rib and enter the locking position, indicating that the outer shell and the outer shell rear cover are locked together. Simultaneously, when the outer shell rear cover is connected to the outer shell, the inner shell locking block is also positioned in the inner shell locking groove, thus achieving simultaneous locking of the outer shell and the inner shell by the rear cover. An air inlet mesh limiting block 702 is also provided on the outer shell rear cover corresponding to the air inlet mesh, and an air inlet mesh locking groove 704 is provided on the air inlet mesh corresponding to the air inlet mesh limiting block, allowing the air inlet mesh to rotate synchronously with the outer shell rear cover, making assembly more convenient and eliminating the need for screws, thus saving costs.

[0039] Furthermore, such as Figure 1-6 and Figures 10-12As shown, a front cover 50 is also provided on the side of the outer casing 10 near the fluid outlet. The front cover is provided with a front cover limiting block 500 and a front cover locking block 501. A first locking slot 1043 is provided on the side of the outer casing near the fluid outlet corresponding to the front cover limiting block, and a second locking slot is provided on the side of the outer casing near the front cover locking block 501. When the front cover is connected to the outer casing, the front cover limiting block 500 is first aligned with the first locking slot 1043, and then the front cover is continuously pushed until the front cover locking block is engaged in the second locking slot 1044. The outer casing and the front cover are connected to the outer wall, and locking can be achieved without the use of screws, saving costs. An inner shell front cover 90 is provided on the side of the inner shell facing the fluid outlet. An inner shell front cover limiting block 901 is provided on the outer wall of the inner shell front cover. A first outer shell retaining groove is provided on the outer shell corresponding to the inner shell front cover limiting block. After the inner shell front cover fixes one side of the inner shell, the inner shell front cover limiting block is inserted into the first outer shell retaining groove to fix the inner shell front cover inside the outer shell. Simultaneously, an air outlet mesh 60 is provided between the inner shell front cover and the outer shell front cover. Multiple sets of air outlet mesh clamping grooves 600 are provided on the air outlet mesh, and air outlet mesh limiting blocks are provided on the inner shell front cover corresponding to the air outlet mesh clamping grooves to fix the air outlet mesh. To achieve better airflow, a conical air guide column 601 is provided in the center of the air outlet mesh, causing the fluid in the center to diffuse outwards under the action of the air guide column, increasing the fluid velocity and volume around the perimeter, resulting in better airflow.

[0040] Furthermore, such as Figures 13-14 As shown, in order to improve the heating effect of the fluid exiting the fluid outlet 107, the heating assembly includes multiple sets of cross-arranged heating elements 301. The multiple sets of heating elements are fixed by heating element fixing cylinders 300 and heating element fixing brackets 302. Each set of heating elements is provided with a heating element clamping groove 303 on the heating element fixing bracket. Each set of heating elements is inserted into the heating element clamping groove, thereby dividing the multiple sets of heating elements and the fluid channel into multiple parts, and each part has the same volume. The fluid entering each part comes into contact with two sets of heating elements, resulting in better heating effect and avoiding heat loss from the heating elements.

[0041] It should be understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A hair dryer with multiple independent air ducts, comprising a housing, a handle formed at the lower part of the housing, a control panel disposed within the handle, and multiple sets of fluid channels formed at the upper part of the housing, wherein one side of the upper part of the housing is a fluid inlet and the other side of the upper part of the housing is a fluid outlet, characterized in that: The multiple sets of fluid channels are independent of each other. Each set of fluid channels includes a set of fluid inlets and fluid outlets. Each set of fluid channels is equipped with a driving unit, which causes fluid flow in its corresponding fluid channel.

2. The hair dryer according to claim 1, characterized in that: A heating assembly is provided between the fluid outlet and the drive unit. The heating assembly includes a heating element and a heating element fixing cylinder sleeved around the heating element. The fluid enters the heating element fixing cylinder and comes into contact with the heating element to heat the fluid.

3. The hair dryer according to claim 2, characterized in that: The heating element is arranged in the radial direction of the fluid within the fluid channel. The heating element is configured in multiple groups, and the multiple groups of heating elements are connected by a heating element fixing bracket.

4. The hair dryer according to claim 3, characterized in that: The heating element holder is provided with a heating element clamping groove. The heating element is inserted into the heating element clamping groove and connected to the heating element holder. Multiple sets of heating elements are evenly distributed in the fluid channel.

5. The hair dryer according to claim 1, characterized in that: The outer shell is further provided with an inner shell, which forms multiple sets of fluid channels. The inner shell is also provided with a motor drive board, which is connected to a power drive board. The motor drive board is electrically connected to and controls the drive unit within the fluid channels. The inner shell is provided with a fixing groove, and the motor drive board is placed in the fixing groove, covering each set of fluid channels.

6. The hair dryer according to claim 5, characterized in that: The inner shell includes an upper inner shell and a lower inner shell, which are connected by a snap-fit. An inner protruding ring is provided inside the inner shell. The driving unit is placed between the inner protruding ring and the fluid inlet. An outer protruding ring is provided on the outer wall of the inner shell. A limiting rib is provided on the inner wall of the outer shell corresponding to the outer protruding ring. The outer protruding ring is placed between the limiting ribs to prevent the inner shell from moving along the fluid flow direction inside the outer shell.

7. The hair dryer according to claim 6, characterized in that: The outer shell has a rear cover near the fluid inlet. The inner wall of the outer shell has a shell limiting block. The outer shell has a recess corresponding to the shell limiting block. The shell limiting block rotates in the recess. The outer shell also has an L-shaped slot. The rear cover has a shell clamping block corresponding to the L-shaped slot. When the shell limiting block rotates in the recess, the shell clamping block locks or unlocks with the L-shaped slot, connecting or locking the rear cover to the outer shell.

8. The hair dryer according to claim 7, characterized in that: The outer shell rear cover is also provided with an inner shell clamping block, and the inner shell is provided with an inner shell clamping groove corresponding to the inner shell clamping block. An air inlet mesh is also provided between the outer shell rear cover and the outer shell, and an air inlet king clamping groove is provided on the air inlet mesh. An air inlet king limiting block is provided on the outer shell rear cover corresponding to the air inlet king clamping groove. The L-shaped groove includes an inclined side and a clamping position corresponding to the inclined side. A protruding rib is provided at the connection between the clamping position and the inclined side.

9. The hair dryer according to claim 6, characterized in that: The inner shell has a front cover facing the fluid outlet. The outer wall of the front cover has a front cover limiting block. The inner shell has a first slot corresponding to the front cover limiting block. The outer shell has a front cover facing the fluid outlet. An air outlet screen is provided between the front cover and the inner shell. A conical air guide column is provided in the middle of the air outlet screen. An air outlet screen clamping groove is provided on the air outlet screen. The inner shell has a front cover limiting block corresponding to the air outlet screen clamping groove. The inner wall of the front cover also has a front cover limiting block and a front cover locking block. The outer wall of the outer shell has a first locking slot corresponding to the front cover limiting block and a second locking slot corresponding to the front cover locking block.

10. The hair dryer according to claim 1, characterized in that: The handle is equipped with a button control panel and corresponding buttons. The buttons are connected to the handle through a handle button cover, and a handle sleeve is also provided on the outside of the handle.

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