A curling iron barrel with adjustable air outlet direction and a curling device

Abstract

The application relates to a curling rod winding drum with adjustable air outlet direction and a curling device. The curling rod winding drum comprises an inner shell, an outer shell sleeved outside the inner shell, a connecting piece and a top cover. A plurality of left air guide hole groups and right air guide hole groups are arranged on the inner shell. The outer shell can rotate relative to the inner shell. Fluid outlets on the outer shell are selectively aligned with the left air guide hole groups or the right air guide hole groups by rotating the outer shell, so that the air outlet direction is switched. The application adopts an outer rotation switching operation mode. A user can directly rotate the outer shell to adjust the air direction. The operation is intuitive and simple. Double liquid silicone sealing technology is adopted. The non-working side air duct is effectively closed. Air leakage and turbulence are eliminated. Air pressure concentration is ensured. Six groups of air outlet holes and inclined air guide plates are arranged. The conda effect is strengthened. Air flow is stably and directionally injected. The hair adsorption and curling effect are significantly improved. The overall structure is highly integrated, simple and reliable. While realizing the convenient bidirectional curling function, the manufacturing cost and assembly difficulty are effectively reduced.

Description

Technical Field

[0001] This application relates to the field of curling iron barrels and curling irons, and more particularly to a curling iron barrel and curling device with adjustable airflow direction. Background Technology

[0002] Currently, hair dryers and curling irons with curling functions in the beauty and hair care product market generally suffer from the following structural and usability pain points when achieving two-way curls: Traditional curling irons mostly employ a "one-barrel, one-direction" airflow design, meaning a single curling iron can only achieve airflow and curling in one direction. Users must switch between or use the corresponding curling iron when styling the left and right sides of their hair, resulting in cumbersome operation, a fragmented user experience, and high usage costs. While some existing curling irons with switchable airflow directions have achieved this function to some extent, they still have the following significant drawbacks: complex structure and numerous parts; the internal switching mechanism relies on a large number of components, leading to complex assembly processes, easy loosening of the structure, and low reliability; insufficient airflow sealing; after switching, the non-working side airflow is not effectively sealed, resulting in airflow leakage and turbulence, causing impure airflow and reduced air pressure; poor airflow guidance; the airflow design is not optimized for directionality, resulting in chaotic airflow organization and difficulty in forming a stable, concentrated airflow stream, leading to insufficient curl adhesion and unsatisfactory styling results; high manufacturing costs; the complex structure drives up mold and production costs, affecting the product's market competitiveness.

[0003] Therefore, existing technologies have significant shortcomings in terms of bidirectional air outlet structure, air duct sealing performance, and airflow guidance efficiency. There is an urgent need for a new type of directional adjustable curling iron with a simplified structure, smooth switching, reliable sealing, and stable curling effect to fundamentally improve the user experience. Utility Model Content

[0004] The technical problem this application aims to solve is that existing curling irons suffer from complex bidirectional air outlet structures, poor air duct sealing, impure airflow due to air turbulence, reduced air pressure, insufficient hair-curling adhesion, and unsatisfactory styling results. To address these shortcomings of the prior art, this application provides a curling iron barrel and curling device with adjustable air outlet direction.

[0005] To solve the above-mentioned technical problems, the technical solution adopted in this application is: A curling iron with adjustable airflow direction is constructed, comprising an inner shell, wherein multiple sets of left air guide holes and multiple sets of right air guide holes are arranged circumferentially at intervals on the outer surface of the inner shell, and an outer shell is fitted over the inner shell, the outer shell being rotatably fitted over the inner shell, characterized in that: the outer shell is provided with multiple sets of fluid outlets corresponding to the air guide hole groups, the outer shell and the inner shell are connected by a connector, the connector is provided with a fluid inlet, the inner shell is provided with a fluid channel, fluid enters the fluid channel through the fluid inlet, passes through the left air guide hole group or the right air guide hole group and is discharged through the fluid outlet, the inner shell is connected to the connector and rotates synchronously, the outer shell can rotate relative to the inner shell, and by rotating the outer shell, its fluid outlets can selectively communicate with the left air guide hole group or the right air guide hole group to achieve switching of fluid discharge direction.

[0006] Preferably, a sealant is provided between the inner shell and the outer shell. When the fluid outlet is aligned with the air guide hole group on one side, the sealant cuts off the connection between the air guide hole group on the other side and the fluid outlet.

[0007] Preferably, the inner shell includes a first inner shell connector and a second inner shell connector arranged sequentially along its axial direction. Multiple air guide plates are arranged in parallel between adjacent first inner shell connectors and second inner shell connectors. The first inner shell connector, the second inner shell connector, and the air guide plates together form an air guide hole. The multiple air guide holes are arranged in an array to form an air guide hole group.

[0008] Preferably, the air guide plate is inclined relative to the radial direction of the inner shell, the outer shell includes multiple sets of connecting pieces, a fluid outlet is provided between every two sets of connecting pieces, adjacent connecting pieces are connected by multiple sets of connecting ribs, and the two sides of the connecting pieces are arc-shaped.

[0009] Preferably, the curling iron barrel further includes a gear structure for providing a rotational feel, the gear structure including a gear groove disposed on the outer shell and a gear spring disposed on the inner shell and cooperating with the gear groove, the gear spring having a protrusion that can be engaged into the gear groove.

[0010] Preferably, there are two gear slots, which correspond to the first gear position where the fluid outlet is in fluid communication with the left air guide hole group and the second gear position where the fluid outlet is in fluid communication with the right air guide hole group. A stroke structure is also provided between the outer shell and the inner shell. The stroke structure limits the rotation stroke of the outer shell relative to the inner shell, and when placed at both ends of the stroke structure, the left air guide hole group or the right air guide hole group is opened.

[0011] Preferably, the stroke structure includes a stroke block placed on the outer shell, and a stroke groove is provided on the inner shell corresponding to the stroke block. The stroke block rotates in the stroke groove, and when it rotates to the end of the stroke groove, the protrusion is placed in the gear slot.

[0012] Preferably, the outer shell and the inner shell are connected at one end by a connecting block and at the other end by a top cover. The outer shell is provided with an outer shell through hole, the top cover is provided with an insertion post, the inner shell is provided with an inner shell through hole, the insertion post is provided with a synchronization post, and the inner shell through hole is provided with a synchronization groove. When the top cover is connected to the outer shell and the inner shell, the synchronization post is placed in the synchronization groove so that the top cover and the inner shell rotate synchronously. The insertion post and the synchronization post can rotate within the outer shell through hole.

[0013] Preferably, the connector has a receiving plate in the middle, the inner shell is placed at the receiving plate and connected to the connector and rotates synchronously, the outer shell is placed between the connector and the inner shell and can rotate relative to the inner shell, the top cover is provided with a mark for indicating the direction of rotation, the outer shell is provided with a corresponding mark position, and the connector is provided with an L-shaped locking groove for quick locking with the body of the hair curling device.

[0014] A hair curling device is constructed, comprising a hair curling device body, wherein a motor for generating airflow is disposed within the hair curling device body, characterized in that: the hair curling device body is connected to a hair curling iron barrel with adjustable airflow direction as described above, and the hair curling iron barrel is detachably connected to the hair curling device body via a connector.

[0015] The beneficial effects of this application are as follows: users can switch the airflow direction by rotating the outer shell, while the internal air duct body (inner shell) remains stationary. This design is not only intuitive and convenient to operate, but also simplifies the transmission structure, laying the foundation for a streamlined and highly efficient seal. A double-liquid silicone sealing structure is installed between the inner and outer shells to effectively seal the non-working side air duct, eliminating airflow leakage and turbulence, ensuring that all airflow energy is concentrated in the working air duct, significantly improving the purity and stability of the airflow. Six sets of left and right air guide holes are set on the inner shell, corresponding to six sets of fluid outlets on the outer shell, forming a multi-row array of air outlets. This layout maximizes and enhances the Coanda effect, allowing high-speed airflow to more effectively adhere to the curved surface of the curling iron, generating a strong negative pressure zone and enhancing the automatic adsorption and wrapping effect of hair. The inclined air guide plate standardizes the air duct geometry, guiding the airflow to be sprayed in a highly consistent direction (tangentially), effectively suppressing turbulence, ensuring stable airflow, and improving the reliability and consistency of the curling effect. The curling iron's barrel is highly integrated into core components such as the top cap, outer shell, inner shell, connectors, and seals. This streamlined design significantly reduces the number of parts, lowers mold-making and manufacturing costs, and improves assembly yield and production efficiency. The top cap features rotation direction indicators, and the outer shell has corresponding indicator positions. Combined with the gear shift spring and gear shift groove structure, this provides clear gear feel and direction indication, making switching operations more intuitive, accurate, and tactile feedback, thus enhancing the user experience. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the present application will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the axial structure of the curling iron barrel according to a preferred embodiment of this application; Figure 2 This is an exploded structural diagram of the curling iron barrel according to a preferred embodiment of this application; Figure 3 This is a schematic diagram of another axial side structure of the curling iron barrel according to a preferred embodiment of this application; Figure 4 A cross-sectional view of the left air guide hole group of the curling iron barrel in a preferred embodiment of this application, with the air outlet on the right. Figure 5 A cross-sectional view of the right air guide hole group of the curling iron barrel in a preferred embodiment of this application, with the air outlet on the left. Figure 6 This is a schematic diagram of the axial structure of the top cover according to a preferred embodiment of this application; Figure 7 This is a schematic diagram of the axial structure of the housing according to a preferred embodiment of this application; Figure 8 This is a schematic diagram of another axial structure of the housing according to a preferred embodiment of this application; Figure 9 This is a schematic diagram of the axial structure of the inner shell according to a preferred embodiment of this application; Figure 10 This is a schematic diagram of another axial side structure of the inner shell according to a preferred embodiment of this application; Figure 11 This is a preferred embodiment of the present application. Figure 10 Enlarged structural diagram at point A in the diagram; Figure 12 This is a schematic diagram of the axial structure of the connector according to a preferred embodiment of this application. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this application. Obviously, the described embodiments are some embodiments of this application, but not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application.

[0018] A preferred embodiment of this application provides a curling iron barrel and curling device with adjustable air outlet direction; such as Figures 1-3As shown, the device includes a hair curling device body, a motor inside which the fluid flow rate is changed by the motor, and a curling iron barrel connected to the device body. After the fluid device changes the fluid flow rate, the fluid enters the fluid channel 5 through the fluid inlet 4 and is discharged from the fluid outlet 7 to blow onto the hair, thereby realizing the hair curling operation. The curling iron barrel includes an inner shell 6 and an outer shell 2 sleeved outside the inner shell. One end of the inner shell 6 and the outer shell 2 are detachably connected to the hair curling device body through a connector 3, and the other end is connected through a top cover 1. In this application, the top cover 1, the inner shell 6 and the connector 3 are connected and rotate synchronously, and the outer shell 2 can rotate relative to the inner shell 6.

[0019] Traditional adjustable curling irons typically operate by keeping the outer shell stationary while the user rotates the internal airflow mechanism to change the airflow direction. This application employs a safer, reverse-linking design: the user rotates the outer shell while the inner shell of the internal airflow mechanism remains stationary, thus changing the airflow direction. Specifically... Figures 1-3As shown, the inner shell 6 is provided with multiple sets of right air guide hole groups 60 and multiple sets of left air guide hole groups 61, which are arranged alternately. In this application, there are 6 sets of right air guide hole groups and 6 sets of left air guide hole groups. The outer shell 2 is composed of multiple sets of connecting pieces 20, with a fluid outlet 7 formed between every two sets of connecting pieces. The connecting pieces are connected by multiple sets of connecting ribs 22, making the multiple 6 sets of connecting pieces of the outer shell form a cylindrical shape. Each set of fluid outlets corresponds to a set of left air guide hole groups 61 and right air guide hole groups 60. Since the outer shell 2 can rotate relative to the inner shell, when the outer shell rotates, the fluid outlets form fluid communication with the left air guide hole groups 61 or right air guide hole groups 60. When the outer shell rotates to the right, airflow is formed between the fluid outlet 7 and the right air guide hole group 60, and the left air guide hole group is closed, thus forming a left air outlet. When the outer shell rotates to the left, airflow is formed between the fluid outlet 7 and the left air guide hole group 61, and the right air guide hole group is closed, thus forming a right air outlet. To facilitate observation of whether the airflow is from the left or right during rotation, the top cover is marked with a rotation direction 12, and the outer casing has a corresponding indicator 23. When the rotation direction is indicated by a left-hand arrow or a right-hand arrow, the left air vent group is open (right airflow); when the indicator 23 is aligned with the right-hand arrow, the right air vent group is open (left airflow). The current airflow direction can be determined by the alignment of the indicator with the rotation direction. Furthermore, since rotating the outer casing adjusts the airflow direction—rotating it to the left results in right airflow, and rotating it to the right results in left airflow—and the rotation direction of the outer casing is opposite to the airflow direction, the current airflow direction can be indicated by the rotation direction, facilitating operation, judgment, and adjustment. To further facilitate rotation of the outer casing, anti-slip grooves 21 are provided to increase friction during rotation. Users of this application can adjust the airflow direction by rotating the outer casing and through mechanical linkage, which differs from existing designs in terms of operational intuition and also provides a foundation for subsequent simplified structures and improved sealing.

[0020] Furthermore, such as Figures 2-5 and Figures 7-11As shown, the inner shell 6 is formed by multiple sets of first inner shell connectors 63 and multiple sets of second inner shell connectors 64 arranged sequentially in the axial direction of the inner shell. Multiple sets of air guide plates 67 are arranged parallel to each set of first and second inner shell connectors. The first inner shell connectors 63, second inner shell connectors 64, and multiple sets of air guide plates together form a left air guide hole 68. Multiple sets of left air guide holes are connected along the axial direction of the inner shell to form a left air guide hole group 61. The right air guide hole group has the same structure as the left air guide hole group, except that the left air guide holes face to the left to form a left air guide hole group, and the right air guide holes face to the right to form a right air guide hole group. Two sets of sealant 9 are provided on the first inner shell connectors 63. The two sets of sealant are arranged along the axial direction of the inner shell and placed between the inner shell and the outer shell to increase the sealing of the connection, thereby improving the sealing performance and preventing air leakage from non-working seals, which would lead to air dispersion. When the outer casing rotates to the left, the fluid in the right-side air guide group cannot be discharged due to the sealant, while the left-side air guide group and the fluid outlet create airflow. The fluid then flows through the left-side air guide group to the fluid outlet and is discharged for curling. To further improve the angle at which the fluid exits the outlet, the connecting piece is designed with curved edges 200° on both sides. The fluid discharged from the left air guide group is blown to the right by the curved edges, ensuring that all fluid energy is concentrated in the working air duct, guaranteeing curling efficiency and adsorption effect, and eliminating the "turbulence" phenomenon caused by gaps in existing designs. To improve the sealing effect, the sealant 9 uses dual-liquid silicone, which has a highly elastic sealing structure, thereby achieving an efficient and tight physical seal on the air duct in the opposite direction.

[0021] Furthermore, such as Figures 4-5 As shown, this application designs six sets of fluid outlets 7. Each set of fluid outlets 7 is equipped with a left air guide hole group 61 and a right air guide hole group 60. The left air guide hole group is formed by multiple sets of left air guide holes 68 connected axially, and the right air guide hole group 60 is formed by multiple sets of right air guide holes 69 connected axially. Each set of fluid outlets 7 can only open either the left air guide hole group 61 or the right air guide hole group 60. After the user selects the adjustment direction, the fluid can be discharged at high speed through the six rows of arrayed fluid outlets 7. Through the array design of multiple rows of holes, the "Coanda effect" is maximized and enhanced. The high-speed airflow can more effectively adhere to the curved surface of the curling iron barrel, thereby generating a stronger and more stable negative pressure zone on the surface of the curling iron barrel, making it easier for hair to be automatically attracted and wrapped, greatly improving the experience of automatic curling.

[0022] Furthermore, such as Figures 9-11As shown, the air guide plate 67 is inclined, meaning the inner side of the air guide plate is closer to the fluid inlet, and the outer side is more circular towards the fluid outlet. This allows the fluid to enter the left or right air guide hole more effectively under the action of the air guide plate. Furthermore, this design ensures that the left or right air guide hole forms a standardized geometric shape, guiding the fluid to be sprayed in a highly consistent direction, effectively suppressing turbulence and making the airflow more stable. Practical experience has proven that stable airflow significantly improves the reliability and consistency of the hair-curling effect, avoiding the chaotic airflow organization of existing duct designs and the tendency for turbulence to cause inconsistent suction strength.

[0023] Furthermore, such as Figures 1-3 and Figures 6-12 As shown, a receiving plate 31 is provided in the middle of the connector 2, and a connecting cavity 32 is formed on one side of the receiving plate. The inner shell is placed on the receiving plate and inside the connecting cavity. A locking hole 33 is provided on the receiving plate, and a locking pin 62 is provided on the inner shell corresponding to the locking hole. The inner shell is placed on the receiving plate 31, and the locking hole and the locking pin are connected by locking screws, thereby connecting the inner shell and the connector and allowing them to rotate synchronously. One side of the outer shell is also placed inside the connecting cavity and between the inner shell and the connector. The connecting end is an arc-shaped edge, so the bottom 201 of its connecting piece is placed on the end face 34 of the connector, allowing the outer shell to rotate relative to the connector. The inner shell 6 has an inner shell through hole 66 in the middle of the side facing the top cover, and an inner shell synchronization groove 660 is opened at the through hole. The top cover 1 has a top cover insertion post 11 on the side facing the inner shell, and a top cover synchronization post 14 is set on the top cover insertion post corresponding to the inner shell synchronization groove 660. When the top cover is connected to the inner shell, the top cover insertion post inserts through the inner shell through hole 66, and the top cover synchronization post is engaged in the inner shell synchronization groove 660. A rotating handle 10 is set on the side of the top cover away from the inner shell. When the rotating handle is rotated, it drives the inner shell and the connecting parts to rotate synchronously. At this time, the curling iron barrel can be detached or connected to the curling device body. The locking groove 30 set on the connecting parts is connected to the locking buckle on the device body. The locking groove adopts an L-shaped locking groove to facilitate the detachable connection of the curling iron barrel and the curling device body. The connecting piece 20 is connected to the top cover via the connecting piece fixing cover 26 on the side near the top cover, forming a fluid channel inside the outer shell. A through hole 24 is provided in the center of the connecting piece fixing cover. The radius of the through hole should meet the sum of the radius of the top cover insertion post and the thickness of the top cover synchronization post, meaning the top cover insertion post can rotate freely within the through hole after insertion. A top cover receiving groove 25 is provided on the connecting piece through hole 24, and the top cover flange 15 is placed within the top cover receiving groove. A top cover limiting post 13 is provided on the inner wall of the top cover flange. The limiting post prevents the top cover flange from wobbling within the top cover receiving groove, but does not affect the rotation of the top cover. The components of this application structure are more streamlined, avoiding the traditional reliance on a large number of fragmented structures for function switching, resulting in lower costs and simpler assembly. By designing the outer shell and community health center as highly integrated components, the mold opening and manufacturing costs are significantly reduced while achieving the same complex functions, and the yield and efficiency of production assembly are greatly improved.

[0024] Furthermore, such as Figures 7-9 As shown, the connecting piece fixing cover 26 has a fixing cover groove 27 inside, and the inner shell has an inner shell protrusion 65 corresponding to the fixing cover groove. When the inner shell is connected to the outer shell, the inner shell protrusion is placed in the fixing cover groove. The fixing cover groove 27 has an outer shell travel post 29, and the inner shell protrusion has a travel groove 650 corresponding to the outer shell travel post. When the outer shell is rotated, the outer shell travel post can only rotate within the travel groove, and when it rotates to form both ends, the left air guide hole group 61 or the right air guide hole group 60 is opened. The inner shell protrusion 65 is also provided with a spring plate groove 651, and a notch 652 is provided on the spring plate groove. A gear position groove 28 is provided in the groove of the fixed cover corresponding to the notch. A gear position spring 8 is provided in the spring plate groove. A protruding part 80 is provided on the gear position spring, which corresponds to the gear position groove 28. When the outer shell is rotated, an elastic extrusion force is generated between the gear position spring and the inner wall of the groove 27 of the fixed cover. When the protruding part 80 is rotated to the gear position groove 28, the left air guide hole group 61 or the right air guide hole group 60 is opened, thereby realizing the gear position feel when rotating and adjusting, and the adjustment feel is better.

[0025] When using the curling iron of this application, the user holds the main body of the curling device and connects the curling iron barrel to the main body by rotating the handle 10. Upon starting the curling device, the motor generates airflow, which enters the fluid channel 5 from the fluid inlet 4. The user adjusts the airflow direction according to their curling needs (e.g., left or right side of the hair). For left airflow (i.e., airflow from the left for curling the right side of the hair), the user holds the anti-slip groove 21 on the outer shell 2 and rotates the outer shell to the right. At this time, the outer shell rotates relative to the inner shell 6, allowing airflow between the fluid outlet 7 and the right air guide group 60, while the left air guide group 61 is sealed by the sealant 9. The user can confirm the left airflow state by the rotation direction 12 on the top cover and the marking 23 on the outer shell: when the marking 23 aligns with the right-hand arrow, the user rotates the outer shell to the left. At this time, airflow between the fluid outlet 7 and the left air guide group 61 occurs, and the right air guide group 60 is sealed by the sealant. When the indicator 23 aligns with the left-hand arrow, it indicates the right-side airflow mode. After adjusting the airflow direction, the airflow is guided by the inclined guide plate 67 and ejected at high speed and in a concentrated manner from the six fluid outlets 7. Due to the Coanda effect, the airflow adheres to the curved surface of the curling iron, creating a negative pressure zone, and the hair is automatically attracted and wrapped around the curling iron. During the curling process, the user can switch the airflow direction at any time by rotating the outer casing without replacing the curling iron, making the operation simple and intuitive. The design of the gear spring 8 and gear slot 28 provides a clear gear feel, ensuring that the switch is in place and stable. After use, turn off the curling device and remove the curling iron barrel for cleaning or storage by rotating the handle 10. This application achieves airflow adjustment by switching the airflow direction through external rotation of the outer casing, which is different from the traditional internal rotation switching method. Furthermore, the connection between the outer and inner casings uses double liquid silicone seals to improve the sealing effect and prevent airflow leakage, ensuring concentrated and efficient airflow. The air guide hole group is set with six sets to form an aerodynamic layout and air duct optimization to enhance the adhesion to hair and the curling effect. It achieves the technical effects of simplified structure, smooth switching, reliable sealing and stable curling effect, significantly improves the user experience and effectively controls manufacturing costs and assembly difficulty.

[0026] It should be understood that this application 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 application. Furthermore, based on the teachings of this application, these features and embodiments can be modified to suit specific circumstances and materials without departing from the spirit and scope of this application. Therefore, this application 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 application.

Claims

1. A curling iron barrel with adjustable air outlet direction, comprising an inner shell, wherein multiple sets of left air guide holes and multiple sets of right air guide holes are arranged circumferentially at intervals on the outer surface of the inner shell, and an outer shell is fitted over the inner shell, the outer shell being rotatably fitted over the outer surface of the inner shell, characterized in that: The outer shell is provided with multiple fluid outlets corresponding to the air guide hole groups. The outer shell and the inner shell are connected by a connector. The connector is provided with a fluid inlet. The inner shell is provided with a fluid channel. Fluid enters the fluid channel through the fluid inlet, passes through the left air guide hole group or the right air guide hole group, and is discharged through the fluid outlet. The inner shell is connected to the connector and rotates synchronously. The outer shell can rotate relative to the inner shell. By rotating the outer shell, its fluid outlet can selectively communicate with the left air guide hole group or the right air guide hole group to achieve switching of the fluid discharge direction.

2. The curling iron barrel according to claim 1, characterized in that: A sealant is provided between the inner shell and the outer shell. When the fluid outlet is aligned with the air guide hole group on one side, the sealant cuts off the connection between the air guide hole group on the other side and the fluid outlet.

3. The curling iron barrel according to claim 2, characterized in that: The inner shell includes a first inner shell connector and a second inner shell connector arranged sequentially along its axial direction. Multiple air guide plates are arranged in parallel between adjacent first inner shell connectors and second inner shell connectors. The first inner shell connector, the second inner shell connector, and the air guide plates together form an air guide hole. Multiple air guide holes are arranged in an array to form an air guide hole group.

4. The curling iron barrel according to claim 3, characterized in that: The air guide plate is inclined relative to the radial direction of the inner shell. The outer shell includes multiple sets of connecting plates, and a fluid outlet is provided between every two sets of connecting plates. Adjacent connecting plates are connected by multiple sets of connecting ribs. The two sides of the connecting plates are arc-shaped.

5. The curling iron barrel according to any one of claims 1-4, characterized in that: The curling iron barrel also includes a gear structure for providing a rotation feel. The gear structure includes a gear groove on the outer shell and a gear spring on the inner shell that mates with the gear groove. The gear spring has a protrusion that can be engaged with the gear groove.

6. The curling iron barrel according to claim 5, characterized in that: The gear slot is provided in two positions, corresponding to the first position where the fluid outlet is in fluid communication with the left air guide hole group and the second position where the fluid outlet is in fluid communication with the right air guide hole group. A stroke structure is also provided between the outer shell and the inner shell. The stroke structure limits the rotation stroke of the outer shell relative to the inner shell, and when placed at both ends of the stroke structure, the left air guide hole group or the right air guide hole group is opened.

7. The curling iron barrel according to claim 6, characterized in that: The stroke structure includes a stroke block placed on the outer shell, and a stroke groove is provided on the inner shell corresponding to the stroke block. The stroke block rotates in the stroke groove, and when it rotates to the end of the stroke groove, the protrusion is placed in the gear slot.

8. The curling iron barrel according to claim 1, characterized in that: The outer shell and inner shell are connected at one end by a connecting block and at the other end by a top cover. The outer shell is provided with an outer shell through hole, the top cover is provided with an insertion post, the inner shell is provided with an inner shell through hole, the insertion post is provided with a synchronization post, and the inner shell through hole is provided with a synchronization groove. When the top cover is connected to the outer shell and inner shell, the synchronization post is placed in the synchronization groove to make the top cover and inner shell rotate synchronously. The insertion post and the synchronization post can rotate within the outer shell through hole.

9. The curling iron barrel according to claim 8, characterized in that: A receiving plate is provided in the middle of the connector. The inner shell is placed at the receiving plate and connected to the connector and rotates synchronously. The outer shell is placed between the connector and the inner shell and can rotate relative to the inner shell. The top cover is provided with a mark for indicating the direction of rotation. The outer shell is provided with a corresponding mark position. The connector is provided with an L-shaped locking groove for quick locking with the body of the hair curling device.

10. A hair curling device, comprising a hair curling device body, wherein a motor for generating airflow is disposed within the hair curling device body, characterized in that: The hair curling device body is connected to a curling iron barrel with adjustable air outlet direction as described in any one of claims 1-9, and the curling iron barrel is detachably connected to the hair curling device body via a connector.

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