Automatic curling iron head with two-stage air duct design

Abstract

The utility model discloses an automatic curling iron head with a two-stage air duct design, which comprises an outer shell and an inner air duct frame, the outer shell is sleeved on the inner air duct frame in a surrounding manner, a hollow cavity of the inner air duct frame is a first air duct, at least one second air duct is formed between the air duct frame and the outer shell, the inner air duct frame comprises at least two air guide sheets, and the air guide sheets are arranged on the outer shell. A ventilation opening is formed between every two air guide pieces, so that air in the first air channel enters the second air channel after being distributed, each air guide piece is provided with a sawtooth edge part, and the width of the sawtooth edge part to the other side of the air guide piece is of a convex structure from small to large and then from the air inlet end to the air outlet end; the technical problems that due to the uniform air outlet design of an existing automatic curling iron head, air outlet is not uniform, and air noise is large due to extrusion air outlet are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of pet hair dryers, and more particularly to an automatic curling iron head with a two-stage air duct design. Background Technology

[0002] Automatic curling irons consist of a heating element, a rotating mechanism, a temperature control system, and the curling iron itself. The heating element is made of materials such as ceramic and titanium alloy, and features a spiral heating wire or a dual heating element design to ensure even heat conduction and reduce damage to the hair cuticles. The rotating mechanism achieves stable forward and reverse rotation through a brushless motor and planetary gear transmission. The curling iron itself includes an air duct cavity and an air outlet. Traditional curling irons simply rely on the accumulation of airflow to create pressure, forcing the internal airflow out through the air outlet, resulting in significant air noise during use. Furthermore, the air outlet of a cylindrical curling iron is of uniform size, which means that the pressure of the airflow is not evenly distributed when it passes through the air duct cavity. Also, users tend to have more hair in the middle of the curling iron and less hair at the ends, so the uniformly sized air outlet cannot meet the needs of users. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, this utility model provides an automatic curling iron head with a two-stage air duct design, which solves the technical problems of uneven airflow caused by the uniform air outlet design of the existing automatic curling iron head and the high wind noise caused by the squeezed airflow.

[0004] This utility model achieves the above-mentioned objective through the following technical solution: an automatic curling iron head with a two-stage air duct design, including a shell and an inner air duct frame. The shell is sleeved around the inner air duct frame. The hollow cavity of the inner air duct frame is a first air duct. At least one second air duct is formed between the air duct frame and the shell. The inner air duct frame includes at least two air guides. Each pair of air guides has a ventilation opening, so that the air from the first air duct is distributed and enters the second air duct. The air guides have serrated edges. The width of the serrated edges from the other side of the air guides forms a convex structure that gradually increases and then decreases from the air inlet end to the air outlet end.

[0005] Preferably, the vent is provided with a dividing strip, which fixes two adjacent air guide vanes together and divides the vent into multiple air outlets.

[0006] Preferably, the internal air duct frame includes a base, and one end of the air guide vane is fixedly connected to the base.

[0007] Preferably, the outer casing has outer casing pieces that correspond one-to-one with the air guide vanes, and adjacent outer casing pieces are connected by a connecting part, which divides the outer casing's outlet into individual small outlets.

[0008] Preferably, the cross-section of the outer shell is arc-shaped.

[0009] Preferably, an exhaust vent is formed between adjacent outer shell pieces, and the inner wall of one of the adjacent outer shell pieces overlaps with the outer wall of the other adjacent outer shell piece. The diameter of the inner wall of one of the adjacent outer shell pieces is larger than the diameter of the outer wall of the other adjacent outer shell piece to form the exhaust vent.

[0010] Preferably, at the overlapping portion, the inner wall of one of the adjacent outer shell pieces is parallel to the outer wall of the other adjacent outer shell piece.

[0011] Preferably, the air guide plate and the outer shell are fixedly installed by a combination of grooves and protrusions.

[0012] Preferably, the other end of the inner air duct frame is fixedly connected to the other end of the outer casing.

[0013] Preferably, the air outlet has a trapezoidal cross-sectional shape, with the side near the end of the automatic curling iron forming the lower base of the trapezoid and the side near the middle part of the automatic curling iron forming the upper base of the trapezoid, and the lower base being larger than the upper base.

[0014] Compared with the prior art, the beneficial effects obtained by this utility model are:

[0015] This utility model discloses a housing and an inner air duct frame. The housing is sleeved around the inner air duct frame. The hollow cavity of the inner air duct frame serves as a first air duct. At least one second air duct is formed between the air duct frame and the housing. The inner air duct frame includes at least two guide vanes with ventilation openings between each pair of guide vanes, allowing air from the first air duct to be distributed and then enter the second air duct. Each guide vane has a serrated edge, and the width of the serrated edge from the other side of the guide vane forms a convex structure that gradually increases and then decreases from the air inlet end to the air outlet end. This two-stage air duct design allows airflow from the first air duct to enter the second air duct through the ventilation openings. One side of the ventilation opening is serrated, corresponding to the serrated portion on the guide vane. The serrated portion helps to organize the turbulent airflow from the first air duct before it enters the second air duct, facilitating a consistent airflow from the outer casing's outlet. The serrated edge of the air guide plate has a convex structure that gradually increases in width from the air inlet to the air outlet, resulting in a smaller outlet at both ends and a larger outlet in the middle when the airflow enters the second air duct from the first air duct. This ensures that the working airflow is evenly distributed when it blows out of the outer shell's outlet, resulting in better performance. This solves the technical problem of uneven airflow and excessive wind noise caused by the uniform air outlet design of existing automatic curling iron heads.

[0016] In a further improvement, the outer casing has outer casing pieces corresponding one-to-one with the air guide vanes, forming an outlet between adjacent outer casing pieces. An overlapping portion exists between the inner wall of one adjacent outer casing piece and the outer wall of another adjacent outer casing piece. The diameter of the inner wall of the first adjacent outer casing piece is larger than the diameter of the outer wall of the second adjacent outer casing piece, forming the outlet. At the overlapping portion, the inner wall of the first adjacent outer casing piece and the outer wall of the second adjacent outer casing piece are parallel. With the structural constraints of the outer casing pieces described above, the direction of the working airflow blowing out from the outlet is tangential to the outer wall of the second adjacent outer casing piece, resulting in a spiral airflow path and improved hair adsorption. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the inner air duct frame of the automatic curling iron head with a two-stage air duct design according to this utility model.

[0019] Figure 2 This is a schematic diagram of the outer shell of the automatic curling iron head with a two-stage air duct design of this utility model.

[0020] Figure 3 This is a cross-sectional view (AA) of the automatic curling iron head with a two-stage air duct design of this utility model.

[0021] Figure 4 This is a longitudinal sectional view (BB) of the automatic curling iron head with a two-stage air duct design of this utility model.

[0022] Figure 5 This is a schematic diagram of the overall design of the automatic curling iron head with a two-stage air duct system according to this utility model.

[0023] Reference numerals: 1-Outer shell; 11-Outer shell piece; 111-Connecting part; 112-Overlapping part; 113-Raised strip; 114-Outer air vent; 1141-Small air vent; 2-Inner air duct frame; 21-Air guide plate; 211-Serrated edge; 22-Ventilation opening; 221-Dividing strip; 222-Air vent; 23-Base; 24-Groove. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please refer to Figures 1 to 5 An automatic curling iron head with a two-stage air duct design includes a housing 1 and an inner air duct frame 2. The housing 1 is fitted around the inner air duct frame 2. The hollow cavity of the inner air duct frame 2 serves as a first air duct, directly receiving air blown out by an impeller driven by a high-speed motor. At least one second air duct is formed between the air duct frame 2 and the housing 1. The inner air duct frame 2 includes six guide vanes 21, each with a ventilation opening 22 between adjacent vanes. Each ventilation opening 22 has multiple dividing strips 221 that fix adjacent guide vanes 21 together and divide the ventilation opening 22 into multiple air outlets 222, allowing air from the first air duct to be distributed into the second air duct. Each guide vane 21 has a serrated edge 211. The width of the serrated edge 211 from the other side of the same guide vane 21 increases from the air inlet end to the air outlet end, forming a convex structure. Figure 4 The serrated edge 211 has a larger structure in the middle and smaller at both ends, resulting in the air outlet 222 having a trapezoidal cross-section. The edge near the end of the automatic curling iron is the lower base of the trapezoid, and the edge near the middle part of the automatic curling iron is the upper base of the trapezoid. The lower base is larger than the upper base, and the cross-section of the air outlet 222 at both ends is larger than the cross-section of the air outlet 222 in the middle part. This design creates a wide air outlet at the top and bottom and a narrow air outlet in the middle part, so that the airflow entering the second air channel from the first air channel is evenly distributed throughout the upper, middle and lower parts of the curling iron.

[0026] Furthermore, the inner air duct frame 2 includes a base 23, one end of the air guide plate 21 is fixedly connected to the base 23, the other end of the base 23 is used for fixed connection with the rotation mechanism of the automatic curling iron, and the other end of the inner air duct frame 2 is fixedly connected to the other end of the outer shell 1 by screw fasteners.

[0027] Furthermore, the outer casing 1 has six outer casing pieces 11 corresponding one-to-one with the air guide vanes 21. The cross-section of each outer casing piece 11 is arc-shaped, and adjacent outer casing pieces 11 have overlapping portions 112. The overlapping portion 112 is the overlapping part of the inner wall of one adjacent outer casing piece 11 and the outer wall of the other. The diameter of the inner wall of one adjacent outer casing piece 11 is larger than the diameter of the outer wall of the other adjacent outer casing piece 11, forming an outlet vent 114. Adjacent outer casing pieces 11 are connected by connecting portions 111, which divide the outlet vent 114 of the outer casing 1 into individual small outlets 1141. At the overlapping portion 112, the inner wall of one adjacent outer casing piece 11 is parallel to the outer wall of the other adjacent outer casing piece 11. Under the structural constraints of the outer casing pieces, the airflow direction when blowing out from the outlet is tangential to the outer wall of the other adjacent outer casing piece, resulting in a spiral airflow path and improved hair adsorption.

[0028] Furthermore, the air guide plate 21 and the outer shell plate 11 are fixedly installed together by a combination structure of groove 24 and protrusion 113. The groove 24 is provided on the outer wall of the air guide plate 21, and the protrusion 113 is provided on the inner wall of the outer shell plate 11.

[0029] The automatic curling iron head, as the component that directly contacts the hair, can be used in the following curling scenarios: Negative pressure adsorption: Automatic curling irons have a built-in micro-negative pressure device. When the curling iron is turned on, this device creates a negative pressure environment inside the curling chamber. Because the external air pressure is higher than the air pressure inside the curling chamber, air carrying hair is drawn into the curling chamber, just like a vacuum cleaner uses negative pressure to suck up dust. The hair is drawn into the curling iron along with the airflow, achieving the first step of automatic curling; Rotational adsorption: A motor drives the barrel to rotate. When hair is brought close to the barrel entrance, the rotation of the barrel generates a "winding" force, wrapping the hair around the barrel. Just like when we turn a cylinder by hand, a rope placed on its surface will gradually wrap around it. Some automatic curling irons also have special textures or grooves designed on the surface of the barrel to increase the friction between the hair and the barrel, making it easier for the hair to be adsorbed and wrapped.

[0030] The above examples are merely specific embodiments of this utility model. Obviously, this utility model is not limited to the above embodiments, and many similar modifications are possible. All variations that can be directly derived or conceived by those skilled in the art from the content disclosed in this utility model should be considered within the scope of protection of this utility model.

Claims

1. An automatic curling iron head with a two-stage airflow design, characterized in that, The device includes an outer shell (1) and an inner air duct frame (2). The outer shell (1) is wrapped around the inner air duct frame (2). The hollow cavity of the inner air duct frame (2) is a first air duct. At least one second air duct is formed between the air duct frame (2) and the outer shell (1). The inner air duct frame (2) includes at least two air guides (21). Each pair of air guides (21) has a ventilation opening (22) so that the air from the first air duct is distributed and enters the second air duct. The air guides (21) have serrated edges (211). The width of the serrated edges (211) from the other side of the air guides (21) is a convex structure that increases from small to large and then decreases from the air inlet end to the air outlet end.

2. The automatic curling iron head with a two-stage airflow design as described in claim 1, characterized in that, The ventilation opening (22) is provided with a dividing strip (221), which fixes two adjacent air guide vanes (21) together and divides the ventilation opening (22) into multiple air outlets (222).

3. The automatic curling iron head with a two-stage airflow design as described in claim 1, characterized in that, The inner air duct frame (2) includes a base (23), and one end of the air guide plate (21) is fixedly connected to the base (23).

4. The automatic curling iron head with a two-stage airflow design as described in claim 1, characterized in that, The outer shell (1) has outer shell pieces (11) that correspond one-to-one with the air guide plate (21). Adjacent outer shell pieces (11) are connected by a connecting part (111), which divides the outer shell (1)'s outlet (114) into a single small outlet (1141).

5. The automatic curling iron head with a two-stage airflow design as described in claim 4, characterized in that, The cross-section of the outer shell piece (11) is arc-shaped.

6. The automatic curling iron head with a two-stage airflow design as described in claim 5, characterized in that, An outlet vent (114) is formed between adjacent outer shell pieces (11), and there is an overlap (112) between the inner wall of one of the adjacent outer shell pieces (11) and the outer wall of the other adjacent outer shell piece (11). The diameter of the inner wall of one of the adjacent outer shell pieces (11) is larger than the diameter of the outer wall of the other adjacent outer shell piece (11) to form the outlet vent (114).

7. The automatic curling iron head with a two-stage airflow design as described in claim 6, characterized in that, At the overlapping portion (112), the inner wall of one of the adjacent outer shell pieces (11) is parallel to the outer wall of the other adjacent outer shell piece (11).

8. The automatic curling iron head with a two-stage airflow design as described in claim 4, characterized in that, The air guide plate (21) and the outer shell plate (11) are fixedly installed by a combination structure of groove (24) and protrusion (113).

9. The automatic curling iron head with a two-stage airflow design as described in claim 1, characterized in that, The other end of the inner air duct frame (2) is fixedly connected to the other end of the outer shell (1).

10. The automatic curling iron head with a two-stage airflow design as described in claim 2, characterized in that, The cross-sectional shape of the air outlet (222) is trapezoidal, with the side near the end of the automatic curling iron forming the lower base of the trapezoid and the side near the middle part of the automatic curling iron forming the upper base of the trapezoid, and the lower base being larger than the upper base.

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