Attachment and drying assembly

Abstract

The present application discloses an attachment (10) and a drying assembly (100), wherein the attachment (10) comprises a mounting portion (11) and an air flow portion (12); the mounting portion (11) is configured to be mounted on a drying device (20); and the air flow portion (12) is provided with an air inlet, a flow guide cavity (121) and an air outlet, is of an integrally-formed structure, and is configured as that: at the air outlet, the air flow portion (12) is provided with a single layer of sidewall (122) in a radial direction; in at least part of the remaining area, the air flow portion (12) is provided with multiple layers of sidewalls (123) in the radial direction; and a thermal insulation cavity (124) is formed between adjacent sidewalls among the multiple layers of sidewalls (123).

Description

An accessory and drying assembly Technical Field

[0001] The present application relates to the field of drying equipment, and in particular to an accessory and a drying component. Background Art

[0002] When installed on a hair dryer, the nozzle can change the output airflow to provide more hair-drying functions. When the hair dryer outputs high-temperature airflow, the nozzle will be heated by the high-temperature airflow passing through it, posing a risk of burns to the user if the user touches the nozzle surface.

[0003] To prevent overheating, existing nozzles are designed with multi-layered shells to prevent the outer wall from being directly heated by the airflow. However, nozzles with multi-layered shells require a fixed structure to secure the shells, which not only increases production costs but also allows heat transfer at the fixed locations, raising the shell temperature and making it difficult to meet design requirements.

[0004] Summary of the Invention

[0005] The present application provides an accessory and a drying assembly, aiming to solve the problem in the prior art that it is difficult for the air nozzle to achieve both low cost and better thermal insulation.

[0006] The present application discloses an accessory and a drying assembly, wherein the accessory includes a mounting portion and an airflow portion, the mounting portion being used to be mounted to the drying equipment; the airflow portion having an air inlet, a guide cavity and an air outlet, the airflow portion being an integrally formed structure, and being constructed as follows: at the air outlet, the airflow portion has a single-layer side wall in the radial direction; in at least part of the other areas, the airflow portion has multiple layers of side walls in the radial direction, and an insulating cavity is formed between the multiple layers of side walls.

[0007] The accessory in this application utilizes an integrally molded airflow section with a single-layer sidewall at the air outlet and multi-layer sidewalls in at least some other areas. This creates an insulating cavity without requiring additional mounting structures to prevent burns, achieving both low cost and excellent thermal insulation. Furthermore, the single-layer sidewall minimizes the air outlet's wall thickness and overall dimensions, enhancing user convenience.

[0008] The present application also provides a drying assembly, including a drying device and the above-mentioned accessories.

[0009] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0011] Figures 1a and 1b are schematic diagrams of drying components in certain embodiments of the present application;

[0012] FIG2 is a schematic diagram of the three-dimensional structure of an accessory in certain embodiments of the present application;

[0013] FIG3 is a schematic diagram of the three-dimensional structure of the accessory in another direction in certain embodiments of the present application;

[0014] FIG4 is a schematic cross-sectional view of an attachment formed in a first direction in certain embodiments of the present application;

[0015] FIG5 is a schematic cross-sectional view of an attachment formed in a second direction in certain embodiments of the present application;

[0016] FIG6 is a schematic cross-sectional view of an accessory in certain embodiments of the present application;

[0017] FIG7 is a schematic diagram of a cover of an accessory in certain embodiments of the present application;

[0018] FIG8 is a schematic diagram of a drying device in certain embodiments of the present application. DETAILED DESCRIPTION

[0019] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and should not be understood as limiting the embodiments of the present application.

[0020] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting this application. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections. They can refer to mechanical connections or electrical connections. They can refer to direct connections or indirect connections through an intermediary. They can refer to internal communication between two components or interactions between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0022] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0023] The disclosure herein provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described herein. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0024] As shown in Figures 1a and 1b, certain embodiments of the present application provide an accessory 10 mounted on a drying device 20. The drying device 20 has an air outlet 22 at its end for outputting airflow. During operation, air outlet 22 can output ambient or hot airflow, which is transmitted along a predetermined transmission path and acts on a target object for drying. In some figures of the present application, dashed arrows indicate portions of the airflow transmission path, and this description will not be repeated below.

[0025] After attaching the accessory 10 to the drying device 20, it can adjust the airflow of the drying device 20. Specifically, the accessory 10 can change at least one airflow parameter of the airflow output by the drying device 20, including wind speed, airflow direction, airflow shape, transmission path, and degree of divergence or convergence. Taking the process of blow-drying hair using the drying device 20 as an example, different airflows can achieve different effects. For example, a flat, high-temperature airflow is suitable for styling hair, a diffuse, low-speed airflow can create a fluffy effect on blow-dried hair, and a convergent, high-speed airflow can keep hair straight and smooth during the blow-drying process.

[0026] As shown in Figures 2 and 3, the accessory 10 includes a mounting portion 11 and an airflow portion 12. The mounting portion 11 is used to be mounted to the drying device 20 so that the accessory 10 remains mounted with the drying device 20. The mounting portion 11 can at least provide sufficient mounting strength and positioning accuracy so that the accessory 10 can remain stable when used with the drying device 20. In some embodiments, the accessory 10 can be mounted with the drying device 20 by rotating it axially at any angle. The mounting portion 11 can specifically be mounted with the drying device 20 using magnetic attraction, threads, annular buckles, etc., and its specific structure is not the focus of this application. Unless otherwise specified below, the accessory 10 and the drying device 20 are in a state of being mounted with each other, and the other parts on the accessory 10 form an installation and connection relationship with the mounting portion 11, which can be regarded as these parts being able to be positioned relative to the drying device 20 and being in a preset position.

[0027] The airflow unit 12 has an air inlet a, a guide cavity 121, and an air outlet b. The position of the air inlet a corresponds to the air outlet 22 of the drying device 20. The airflow from the drying device 20 enters the airflow unit 12 through the air inlet a, flows along the guide cavity 121, and finally exits the accessory 10 through the air outlet b and is output to the target object. The shape and size of the guide cavity 121 and the air outlet b will affect the airflow parameters.

[0028] When the drying equipment 20 outputs a hot air flow, the hot air flow will exchange heat with the attachment 10, causing various parts of the air flow transmission path to be heated by the hot air flow. In the illustrated embodiment, the air inlet a, the guide cavity 121, and the air outlet b will all be directly heated by the hot air flow. After these areas are heated, they will transfer heat to areas with lower temperatures, causing other areas of the attachment 10 that are not directly in contact with the hot air flow to also generate heat. The attachment 10 itself is made of materials with low thermal conductivity, such as plastic, resin, organic glass, etc. The heat transfer rate inside the material is positively correlated with the cross-sectional area / contact area. For wall-like structures, the heat transfer rate is larger in the thickness direction and smaller in the length / width direction. The heat transfer path involved below mainly refers to the direction along the thickness of the wall.

[0029] As shown in Figure 4 , the airflow portion 12 is an integrally formed structure with different structures in different areas. Specifically, at the air outlet b, the airflow portion 12 has a single-layer sidewall 122 in the radial direction. In at least some other areas, the airflow portion 12 has multiple radially extending sidewalls 123. Within the multiple sidewalls 123, adjacent sidewalls are spaced apart to form an insulating cavity 124.

[0030] The single-layer sidewall 122 refers to the portion of the accessory 10 where the single-layer sidewall 122 is provided. The inner surface of the single-layer sidewall 122 constitutes the inner surface of the accessory 10, that is, a portion of the wall of the guide cavity 121; the outer surface of the single-layer sidewall 122 constitutes the outer surface of the accessory 10. When hot air flows through the guide cavity 121, the heat can be directly transferred from the guide cavity 121 to the outer surface of the accessory 10 along the single-layer sidewall 122.

[0031] Multi-layer sidewalls 123 refer to the portion of the accessory 10 where these are installed, with different sidewalls forming the inner and outer surfaces of the accessory 10. Adjacent sidewalls do not form surface contact, but are instead separated by insulation cavities 124. In other words, no heat transfer pathway is formed between the sidewalls in the thickness direction of the multi-layer sidewalls 123. When hot air flows through the flow-guiding cavity 121, the heat is first transferred to the innermost sidewall of the multi-layer sidewalls 123. This innermost sidewall then heats the air within the adjacent insulation cavity 124, which then transfers the heat to the next adjacent sidewall. This cycle repeats until the heat reaches the outermost sidewall, which is the outer surface of the accessory 10. The low thermal conductivity of air reduces the rate of heat transfer between the multi-layer sidewalls 123. Therefore, the outer surface temperature of the portion of the accessory 10 where the multi-layer sidewalls 123 are installed is significantly lower than the inner surface temperature.

[0032] In order to maintain a stable relative positional relationship between the side walls in the multi-layer side wall 123, each side wall needs to be fixed. In the embodiment of the present application, the airflow portion 12 is formed as a whole by one-piece molding, and the multi-layer side wall 123 is fixed by the material itself. One-piece molding is a processing technology that manufactures multiple parts or components into a whole in one step. Complex parts can be manufactured as a whole, and the various structures are connected to each other through the material itself, without the need to manufacture multiple parts separately and then assemble them. Specifically, one-piece molding can be achieved by processes such as 3D printing, injection molding, die casting, and CNC machining. Parts manufactured by one-piece molding do not need to be fixed to each other by related connecting structures, so they have the advantages of high overall strength and small size.

[0033] Specifically, as shown in Figure 4 , along the airflow direction x, the multi-layer sidewalls 123 of the airflow portion 12 transition and merge at the air outlet b to form a single-layer sidewall 122. From a structural perspective, this can also be understood as the fact that the multi-layer sidewalls 123 are not connected to each other, but are simultaneously connected to the single-layer sidewall 122. Therefore, the single-layer sidewall 122 itself constitutes the portion that connects and mounts the multi-layer sidewalls 123. This allows the accessory 10 to include multi-layer sidewalls 123 without requiring a connecting structure for securement. Heat transfer between the multi-layer sidewalls 123 is also eliminated through the associated connecting structure.

[0034] Since the hot air flow output by the drying device 20 will diffuse, the temperature of the air flow will gradually decrease as the distance increases. Therefore, the closer the attachment 10 is to the drying device 20, the greater the temperature rise caused by the hot air flow. The air outlet b is the position on the attachment 10 that is farthest from the drying device 20, and it is also the position on the attachment 10 that is heated by the hot air flow and produces the smallest temperature rise. The overheating risk caused by the single-layer side wall 122 is relatively small, and the heat transferred from the single-layer side wall 122 to the multi-layer side wall 123 is also relatively small. Moreover, when using the drying device 20, users generally consciously avoid direct contact with the air outlet b, so the air outlet b is less likely to burn the user.

[0035] In summary, it can be seen that the air outlet b of the accessory 10, as the part with the smallest temperature rise in the entire accessory, has the lowest risk of overheating, and users will consciously avoid touching the air outlet b. Therefore, the risk of overheating and burns at the air outlet b is relatively low. The air outlet b is designed as a single-layer side wall 122, and other areas with higher overheating risks are designed as multi-layer side walls 123. The multi-layer side walls 123 are integrated into the single-layer side wall 122 at the air outlet b. This can form an insulating cavity 124 without the need for additional mounting structures, thereby reducing the temperature of the outer surface of the accessory 10 and preventing user burns.

[0036] Furthermore, when using a drying device 20 equipped with the accessory 10, users often need to precisely control the direction of the output airflow, for example, avoiding direct airflow directly onto the scalp when blow-drying hair and aiming it at the hair strands that need styling and drying. The single-layer sidewall 122 minimizes the wall thickness and overall dimensions of the air outlet b, making it easier for users to precisely control the direction of the output airflow and improving user convenience.

[0037] Therefore, the accessory 10 in the embodiment of the present application not only takes into account better thermal insulation and lower production cost, but also has the characteristics of stable structure and easy use.

[0038] As shown in FIG. 1 a and FIG. 1 b , some embodiments of the present application further provide a drying component 100 , including the above-mentioned drying device 20 and the above-mentioned accessory 10 . The relevant technical solutions and technical effects can be referred to above and will not be repeated here.

[0039] In the accessory 10 provided in some embodiments as shown in FIG. 4 , along the airflow direction x, the heat insulation cavity 124 shrinks until it disappears, and the multi-layer side wall 123 merges into a single-layer side wall 122 at the air outlet b.

[0040] As can be seen from the foregoing, the areas of the accessory 10 closer to the drying device 20 experience a greater temperature rise due to the hot air flow. Consequently, the corresponding insulation cavity 124 becomes larger and more insulating, ensuring that the outer walls of these areas do not overheat. Conversely, the areas farther from the drying device 20 experience a smaller temperature rise due to the hot air flow. Consequently, the corresponding insulation cavity 124 becomes smaller, until it disappears. This disappearance of the insulation cavity 124 is where the multi-layer sidewalls 123 merge into a single-layer sidewall 122. This allows the accessory 10 to maintain its overall insulation while maintaining its overall dimensions, enhancing ease of use.

[0041] The first direction y and the second direction z are introduced below for the convenience of description. As shown in the various drawings of this application, the first direction y and the second direction z are perpendicular to each other, and the (y, z) plane is perpendicular to the airflow direction x. It should be noted that the airflow direction x shown in the various figures has positive and negative properties, and the positive direction points to the direction downstream of the airflow. The first direction y and the second direction z do not involve positive and negative properties. The arrows in the figure are only examples, and the positive and negative directions of the two are not distinguished below. In addition, the accessory 10 can be rotated at any angle relative to the drying device 20. The first direction y and the second direction z are directions determined based on the size of the accessory 10. The first direction y and the second direction z have nothing to do with the drying device 20. For example, Figures 1a and 1b show two directions for installing the accessory 10. In other embodiments not shown above, the accessory 10 can also be installed on the drying device 20 in other directions.

[0042] In some embodiments shown in Figures 4 and 5 , along the airflow direction x, the guide cavity 121 increases in size in the first direction y and decreases in size in the second direction z. Furthermore, the airflow portion 12 has a multi-layer sidewall 123 in at least a portion of the first direction y and a single-layer sidewall 122 in the second direction z.

[0043] When the accessory 10 is used in conjunction with the drying device 20, the airflow from the drying device 20, flowing through the guide cavity 121, is directed and diffused in the first direction y and then converged in the second direction z, thereby forming a flattened airflow. The airflow output from the air outlet b has a significantly larger dimension in the first direction y than in the second direction z. This flattened, high-temperature airflow is suitable for styling hair with a comb during blow-drying.

[0044] Because the flow guide cavity 121 expands outward in the first direction y and contracts in the second direction z, the user can more easily touch the sidewalls that expand outward in the first direction y when using the accessory 10, but is less likely to touch the sidewalls that contract in the second direction z. Therefore, multiple layers of sidewalls 123 are provided along at least a portion of the airflow portion 12 in the first direction y to improve thermal insulation and prevent burns to the user.

[0045] In other embodiments, all areas of the airflow portion 12 in the first direction y and the second direction z, except for the air outlet b, are provided with multi-layer side walls 123. In other embodiments, the airflow portion 12 in both the first direction y and the second direction z is provided with: a portion having single-layer side walls 122 and a portion having multi-layer side walls 123, and when the user picks up the accessory 10, a graphical guide, instructional instructions, or the like is provided to guide the user's fingers to contact the portion having the multi-layer side walls 123 in the first direction y and / or the second direction z.

[0046] In some embodiments shown in FIG6 , the guide cavity 121 uniformly converges the airflow in the radial direction, and the cross-section formed by rotating the accessory 10 at any angle about the airflow direction x is the same, regardless of the first and second directions. Accordingly, the entire area of ​​the airflow portion 12 excluding the air outlet b can be configured with multi-layer sidewalls 123 and a heat-insulating cavity 124. In other embodiments not shown, the entire area of ​​the airflow portion 12 excluding the air outlet b can be configured with a portion having single-layer sidewalls 122 and a portion having multi-layer sidewalls 123. Graphical instructions, instructions in the manual, etc. can be used to guide the user to contact the portion with the multi-layer sidewalls 123 when picking up the accessory 10.

[0047] In some embodiments as shown in FIG4 , the heat-insulating cavity 124 of the accessory 10 is configured such that: along the airflow direction x, the size of the heat-insulating cavity 124 in the first direction y gradually shrinks until it disappears. In combination with FIG5 and some of the aforementioned embodiments, the airflow portion 12 is flat as a whole, and along the airflow direction x, the shape gradually transitions to a shape where the size in the first direction y is larger than the size in the second direction z. Accordingly, the heat-insulating cavity 124 is arranged radially outside the guide cavity 121 in the first direction y, so that the accessory 10 as a whole has a larger size in the first direction y. When the user picks up the accessory 10, he is guided to contact the side wall in the first direction y to avoid burns to the user. In other embodiments not shown, the heat-insulating cavity 124 can also be arranged radially outside the guide cavity 121 in the second direction z, and configured such that the size of the heat-insulating cavity 124 gradually shrinks until it disappears along the airflow direction x.

[0048] As shown in Figures 2 and 3 , in some embodiments, the air inlet a of the accessory 10 is circular and has the same dimensions in the first direction y and the second direction z. As shown in Figure 8 , the air outlet 22 of the drying device 20 is circular and matches the size and shape of the air inlet a. The air outlet 22 outputs a cylindrical airflow that enters the guide cavity 121 from the air inlet a.

[0049] As shown in Figures 4 and 5 , the air outlet b of the accessory 10 is flat. Its dimensions in the first direction y are larger than those in the air inlet a, and its dimensions in the second direction z are smaller. Therefore, as the airflow flows from the air inlet a to the air outlet b, it increases in the first direction y, meaning it diffuses during the flow; and decreases in the second direction z, meaning it converges during the flow, forming a flat airflow.

[0050] As can be seen in Figure 2, the flattened airflow has a larger contact area with the sidewalls of the accessory 10 in the second direction z, and a smaller contact area with the sidewalls in the first direction y. Therefore, the temperature rise of the sidewalls of the accessory 10 in the first direction y is smaller than that of the sidewalls in the second direction z. As shown in Figure 4, in some more specific embodiments, at least a portion of the sidewalls of the accessory 10 in the first direction y is provided with a multi-layered sidewall 123. When a user grasps the accessory 10, the temperature rise in the first direction y is smaller, and an insulating cavity 124 is formed within the sidewalls, preventing burns.

[0051] In some more specific embodiments, as shown in Figures 2, 3, and 4, the airflow portion 12 of the accessory 10 is provided with a concave-convex structure 126 on the outside of the side wall in the first direction y. The concave-convex structure 126 includes a plurality of concave portions and convex portions that are spaced and alternately arranged in sequence. When the user's hand touches the concave-convex structure 126, only the convex portion can be touched, but not the concave portion. Taking the example that the concave portion and the convex portion each occupy 50% of the concave-convex structure 126, when the user touches the concave-convex structure 126, the contact area is reduced by 50% compared to direct contact with the plane, and the heat transfer rate is also reduced by 50%. Under the premise of the same temperature, the concave-convex structure 126 can reduce the heat transferred to the user's fingers, thereby reducing the risk of burns.

[0052] In some embodiments, as shown in FIG8 , the drying device 20 has a circular end with a circular air outlet 22 at its center, from which a roughly cylindrical airflow is output. Correspondingly, in some embodiments, as shown in FIG3 , the mounting portion 11 is annular and can be secured to the outer edge of the end of the drying device 20, specifically by means of magnetism, snaps, bolts, etc. The airflow portion 12 is located within the annular interior of the mounting portion 11, corresponding to the position of the airflow portion 12 of the drying device 20. A portion of the airflow portion 12 extends radially along the annular shape and connects to the mounting portion 11, thereby securing the airflow portion 12 to the mounting portion 11. In some more specific embodiments, the air inlet a of the airflow portion 12 is circular and coincides with the center of the annular mounting portion 11. This allows the accessory 10 to rotate at any angle relative to the drying device 20. For example, in FIG1a and FIG1b , when the accessory 10 is mounted on the drying device 20 at two rotational angles, the air inlet a remains in the position corresponding to the airflow portion 12.

[0053] In some embodiments, the mounting portion 11 and the airflow portion 12 are integrally formed. The advantages of integral formation can be referred to above. In other embodiments, the mounting portion 11 and the airflow portion 12 are two separate parts that are assembled together to form the accessory 10 by bolts, buckles, magnets, adhesives, etc.

[0054] In some embodiments of the accessory 10 shown in FIG. 4 , the airflow portion 12 has an outer wall 123b and an inner wall 123a in the portion adjacent to the air inlet a. The air inlet a is formed within the inner wall 123a, and the outer wall 123b extends radially and is connected to the mounting portion 11. The outer wall 123b constitutes the outer wall of the accessory 10 and is connected to the mounting portion 11, thereby securing the mounting portion 11 to the airflow portion 12. The area between the outer wall 123b and the inner wall 123a is part of the heat-insulating cavity 124. When the accessory 10 is used in conjunction with the drying device 20, the heat-insulating cavity 124 insulates the inner wall 123a and the outer wall 123b from each other. After the inner wall 123a is heated by the hot air flow, it is difficult for the heat to be directly transferred to the outer wall 123b, thereby preventing the outer wall 123b from overheating.

[0055] In the above embodiment, the inner sidewall 123a and the outer sidewall 123b constitute the aforementioned multi-layer sidewall 123. Along the airflow direction x, the distance between the inner sidewall 123a and the outer sidewall 123b gradually decreases, and the size of the heat insulation cavity 124 formed by the inner sidewall 123a and the outer sidewall 123b gradually decreases until the outer sidewall 123a and the inner sidewall 123b merge into a single-layer sidewall 122, forming the air outlet b. In other embodiments not shown, the number of multi-layer sidewalls 123 can be other layers, such as 3, 5, or 6 layers, with each adjacent pair of sidewalls forming an heat insulation cavity 124. Therefore, when the number of multi-layer sidewalls 123 is 3 or greater, the airflow portion 12 has at least two heat insulation cavities 124 in the radial direction, thereby achieving better thermal insulation performance. In more specific embodiments, multiple radially adjacent heat insulation cavities 124 can be interconnected to form a larger heat insulation cavity 124, or the multiple heat insulation cavities 124 can be isolated from each other to prevent heat convection.

[0056] In some more specific embodiments shown in Figures 3 and 4 , along the airflow direction x, the outer wall 123b of the airflow portion 12 decreases in size or remains unchanged in the first direction y, and decreases in size in the second direction z. In conjunction with some of the aforementioned embodiments, in the first direction y, the guide cavity 121 formed by the inner wall 123a of the airflow portion 12 gradually expands in size along the airflow direction x, while the outer wall 123b of the airflow portion 12 decreases in size or remains unchanged in the airflow direction x, thereby forming a heat-insulating cavity 124 between the inner wall 123a and the outer wall 123b, whose size gradually decreases in the airflow direction x.

[0057] In some embodiments shown in Figures 2, 4, and 7, the accessory 10 further includes one or more vents 127 on the single-layer sidewall 122 at the air outlet b. When the user is using the drying device 20, if the air outlet b becomes blocked, for example, if the air outlet b is too close to the hairbrush or hair during hair drying, or if a foreign object is blocked in the air outlet b, the airflow cannot smoothly exit the guide cavity 121 from the air outlet b, causing the air pressure and temperature in the guide cavity 121 to rise, which in turn can cause the motor in the airflow assembly of the drying device 20 to quickly overheat. To prevent this from happening, one or more vents 127 are provided on the single-layer sidewall 122 of the air outlet b. The vents 127 connect the guide cavity 121 to the external environment. When the air outlet b becomes blocked, the airflow can exit the guide cavity 121 through the vents 127, thereby preventing the air pressure and temperature in the guide cavity 121 from rising, and preventing the motor in the airflow assembly of the drying device 20 from overheating.

[0058] Because the air outlet b is formed by a single-layer sidewall 122, the radial thickness of the airflow portion 12 is minimal at this location. The leakage holes 127 can connect the guide cavity 121 with the outside with minimal length, thereby allowing the airflow to escape quickly. Furthermore, the leakage holes 127 formed on the single-layer sidewall 122 do not connect to the insulation cavity 124, thereby preventing hot air from entering the insulation cavity 124 during leakage.

[0059] In some specific embodiments shown in Figures 2, 4, and 7, the leakage holes 127 are provided on the sidewall of the airflow portion 12 in the first direction y. Since the sidewall in this direction is larger, the leakage holes 127 can have a larger area, achieving rapid leakage. In other embodiments not shown, the leakage holes 127 can also be provided on the sidewall of the airflow portion 12 in the second direction z.

[0060] In some specific embodiments as shown in FIG. 6 , the accessory 10 does not distinguish between the first direction and the second direction, and the leakage hole 127 is provided at the air outlet b, and its position is also unrelated to the first direction and the second direction.

[0061] In some embodiments shown in Figures 3 and 7 , the accessory 10 further includes a cover 13. The cover 13 is a separate component from the airflow portion 12, mounted on the airflow portion 12 and enclosing the thermal insulation cavity 124. The outer end surface of the cover 13 constitutes a portion of the outer end surface of the accessory 10.

[0062] As shown in Figure 4 , along the airflow direction x, the downstream end of the insulating cavity 124 tapers until it disappears, effectively being enclosed by a single-layer sidewall 122. The upstream end of the insulating cavity 124 is spaced further apart (forming the largest portion of the insulating cavity 124, providing optimal insulation), and is enclosed by the cover 13. This provides the accessory 10 with a complete exterior surface, preventing users from observing or touching the interior of the insulating cavity 124 from the outside, reducing the risk of burns from accidental contact.

[0063] In some specific embodiments, the cover 13 seals the insulation cavity 124 so that it cannot communicate with the external environment, thereby preventing the hot air flow in the insulation cavity 124 from flowing out. In some more specific embodiments, the insulation cavity 124 can be evacuated to isolate the air from heat conduction. In other more specific embodiments, the insulation cavity 124 is filled with a gas with a lower thermal conductivity than air. The thermal conductivity of dry air is 0.026 (unit is W / mK, omitted below), and gases with lower thermal conductivity than dry air include argon (thermal conductivity 0.016), carbon dioxide (thermal conductivity 0.0146), krypton (thermal conductivity 0.0088), nitrogen (thermal conductivity 0.024), and xenon (thermal conductivity 0.0184).

[0064] In other embodiments not shown, one or more ventilation holes may be provided on the cover 13 and / or the outer wall 123b to connect the insulation cavity 124 to the external environment. External air can enter the insulation cavity 124 through the ventilation holes, dissipating heat from the insulation cavity 124 and further reducing the temperature of the outer wall 123b. More specifically, when there is only one ventilation hole, the gas in the insulation cavity 124 expands when heated, and air flows out of the ventilation hole. When the gas in the insulation cavity 124 cools down, it shrinks and air flows in through the ventilation hole. This creates an airflow exchange that reduces the temperature of the insulation cavity 124. When there are multiple ventilation holes, some of the ventilation holes form air inlets and some of the ventilation holes form air outlets. The heated air in the insulation cavity 124 can directly form thermal convection with the external air, thereby reducing the temperature of the insulation cavity 124. 2 and some of the aforementioned embodiments, ventilation holes may also be provided in the concave portion of the concave-convex structure 16 , which can prevent the user from directly contacting the airflow flowing out of the insulation cavity 124 , and can also hide the ventilation holes to maintain the consistency of the appearance of the accessory 10 .

[0065] In other embodiments not shown, a portion of the ventilation holes are configured to connect the insulation cavity 124 and the guide cavity 121, and another portion of the ventilation holes are designed to connect the insulation cavity 124 and the external environment. When air flows through the guide cavity 121, the negative pressure generated draws the air in the insulation cavity 124 into the guide cavity 121, and the insulation cavity 124 simultaneously draws air from the external environment, thereby forming airflow in the insulation cavity 124 to cool it down.

[0066] In some embodiments shown in Figures 4 and 7, a mounting structure 125 is provided between the outer wall 123b and the inner wall 123a, and the cover 13 is mounted to the mounting structure 125 via the mounting member. The mounting structure 125 may be a buckle, a screw hole, a magnet, etc., and correspondingly, the mounting member may be a buckle, a bolt, a magnet, etc., to mount the cover 13 and the mounting structure 125 to each other. The specific mounting method is not the focus of the embodiments of this application.

[0067] Mounting structure 125 is located within the insulating cavity 124 between outer wall 123b and inner wall 123a. Since insulating cavity 124 is largest near air inlet a, there is ample space for mounting structure 125 in this area. This allows for sufficient mounting stability while concealing mounting structure 125 within the sidewall of accessory 10, maintaining a consistent overall appearance. In other words, insulating cavity 124 is designed to taper along the airflow direction x, ensuring optimal insulation performance in the air inlet a area while also leaving ample space for mounting structure 125.

[0068] In combination with some of the aforementioned embodiments, the accessory 10 has at least two independent parts, part ① is an integrally formed airflow portion 12 and mounting portion 11; and part ② is a cover 13. The assembly of parts ① and ② is completed by installing the cover 13 to the above-mentioned mounting structure 125, and the assembly process is simple. In addition, parts ① and ② can be formed of different materials respectively to achieve different physical properties of the accessory 10 at different positions. For example, the cover 13 is formed of a material with better heat resistance to prevent the accessory 10 from overheating and melting in the part close to the drying equipment 20. In some more specific embodiments, a portion of the cover 13 also covers the air inlet a. The air inlet a is the part of the entire accessory 10 that is heated by the hot air flow and has the highest temperature increase. The use of the cover 13 formed of heat-resistant material to cover this place can specifically enhance the heat resistance of the air inlet a and prevent overheating and melting at this location.

[0069] Furthermore, conventional accessories are typically designed as two or more radially oriented components, requiring a radial connection structure to secure the components together during installation. This radial connection creates a heat transfer path through the thickness of the accessory, rapidly transferring internal heat to the outer surface. However, the accessory 10 in the aforementioned embodiment is designed as two components axially (in the direction of airflow x), with the mounting structure 125 extending axially. This prevents the formation of a heat transfer path through the thickness, thereby reducing the heat transfer rate.

[0070] In some embodiments shown in Figures 1a, 1b, 2, and 8, the drying device 20 in the drying component 100 can also output infrared radiation, and the infrared radiation can act on the target object simultaneously with the airflow to dry it. Correspondingly, the end of the drying device 20 also has a radiation portion 21 for outputting infrared radiation. The accessory 10 is correspondingly formed with a hollow area c for infrared radiation to pass through. Taking the hair-drying process as an example, when the user uses the drying component 100, the hair can be dried by airflow or hot airflow and infrared radiation at the same time. Since infrared radiation does not bake the object to be dried at high temperature, the hair can be protected from damage caused by high-temperature baking while maintaining the same drying efficiency. In the various figures of the present application, part of the transmission path of the infrared radiation is shown with solid arrows.

[0071] When using the drying assembly 100, the accessory 10 is removably attached to the drying device 20, with its air inlet a corresponding to the air outlet 22, and the hollowed-out area c corresponding to at least a portion of the radiation portion 21. The airflow from the drying device 10 flows along the interior of the airflow portion 12 and is output through the air outlet b. At least a portion of the infrared radiation from the drying device 20 passes through the hollowed-out area c and is output. Therefore, while the accessory 10 can modify at least one airflow parameter of the airflow from the drying device 20, it can also transmit the infrared radiation from the drying device 20, ensuring that both the airflow and the infrared radiation can simultaneously affect the target object.

[0072] In some embodiments as shown in FIG8 , an air outlet 22 is formed in the central area of ​​the end of the drying device 20, and an annular radiation portion 21 is formed around the outer edge of the air outlet 22. The radiation portion 21 can be formed by a single annular radiation source, or by a plurality of point radiation sources arranged along a ring. Accordingly, in some embodiments shown in conjunction with FIG2 and FIG3 , a hollow area c is formed between the airflow portion 12 and the mounting portion 11 of the accessory 10, and the outer side wall 123b of the airflow portion 12 spans the hollow area c and is connected to the mounting portion 11. The infrared radiation output by the radiation portion 21 can pass through between the airflow portion 12 and the mounting portion 11.

[0073] In conjunction with some of the aforementioned embodiments, the airflow portion 12 is generally flat, with a larger dimension in the first direction y and forming an outer wall 123b extending along the first direction y. Its dimension in the second direction z is smaller, resulting in the outer wall 123b having a narrower light-facing surface. The majority of the infrared radiation output by the radiating portion 21 passes through the hollow region c, with only a small portion in the first direction y being blocked by the outer wall 123b. This flattened airflow portion 12 not only directs the airflow in a flat shape but also avoids the transmission path of the infrared radiation, allowing the infrared radiation and the flat airflow to simultaneously impact the target object when the drying assembly 100 is used.

[0074] In some more specific embodiments, the accessory 10 further includes a cover 13 formed of a heat-resistant and / or reflective material. The cover 13 covers the airflow portion 12 and the area of ​​the mounting portion 11 facing the radiation portion 21. Alternatively, the cover 13 covers the light-facing surface of the accessory 10 to prevent the accessory 10 from being heated by infrared radiation and thus deformed due to overheating.

[0075] In some embodiments, the cover 15 is made of a heat-resistant material that can withstand higher temperatures without deformation. In some embodiments, the cover 15 is made of a reflective material that can reflect most infrared radiation, thereby reducing its own temperature rise. In some embodiments, the cover 15 is made of a metal material such as aluminum or steel, which has both heat resistance and light reflectivity. In some embodiments, the base material of the cover 15 is made of a heat-resistant material, and the surface of the base material is formed into a reflective surface through a process such as electroplating, thereby achieving both heat resistance and light reflectivity.

[0076] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example" or "some examples" means that the specific features, structures, orientations, positions, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, orientations, positions, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are mutually inconsistent.

[0077] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An accessory, installed on a drying device, characterized in that, Comprising An installation part for installing to the drying device; An air flow part having an air inlet, a diversion cavity and an air outlet. The air flow part is an integrally formed structure and is configured such that at the air outlet, the air flow part has a single-layer side wall in the radial direction; in at least some other regions, the air flow part has a multi-layer side wall in the radial direction, and a heat insulation cavity is formed between the multi-layer side walls.

2. The accessory according to claim 1, characterized in that, Along the air flow direction, the heat insulation cavity shrinks until it disappears, and the multi-layer side walls merge into a single-layer side wall at the air outlet.

3. The accessory according to claim 1, characterized in that, Along the air flow direction, the diversion cavity increases in size in a first direction and decreases in size in a second direction, and the first direction and the second direction are perpendicular to each other; The air flow part has a multi-layer side wall in at least some regions in the first direction and a single-layer side wall in the second direction.

4. The accessory according to claim 3, characterized in that, The air inlet is circular and has the same size in the first direction and the second direction; the air outlet is flat, and the size of the air outlet in the first direction is greater than that of the air inlet, and the size of the air outlet in the second direction is smaller than that of the air inlet.

5. The accessory according to claim 3, characterized in that, Along the air flow direction, the heat insulation cavity gradually shrinks in size in the second direction until it disappears.

6. The accessory according to claim 3, characterized in that, The outer side wall of the air flow part in the second direction is provided with a concavo-convex structure.

7. The accessory according to claim 6, characterized in that, One or more ventilation holes communicating with the heat insulation cavity are provided on the outer side wall of the air flow part and / or the concavo-convex structure.

8. The accessory according to claim 3, characterized in that, Along the air flow direction, the outer side wall of the air flow part decreases in size or remains unchanged in the first direction and decreases in size in the second direction.

9. The accessory according to claim 3, characterized in that, It further includes one or more drain holes opened on the single-layer side wall at the air outlet.

10. The accessory according to claim 9, characterized in that, The drain holes are opened on the single-layer side wall in the first direction and / or the second direction.

11. The accessory according to claim 1, characterized in that, The installation part is annular, the air flow part is located inside the annular of the installation part, and a part of the air flow part extends radially and is connected to the installation part.

12. The accessory according to claim 1, characterized in that, In a part adjacent to the air inlet, the air flow part has an outer side wall and an inner side wall; wherein, The air inlet is formed inside the inner side wall, and the outer side wall extends radially and is connected to the installation part.

13. The accessory according to claim 12, characterized in that, The accessory further includes a covering part, the covering part is installed on the air flow part and closes the heat insulation cavity, and the outer end face of the covering part constitutes a part of the outer end face of the accessory.

14. The accessory according to claim 13, characterized in that, An installation structure is provided between the outer side wall and the inner side wall, and the covering part is installed to the installation structure through an installation part.

15. The accessory according to claim 1, characterized in that, The installation part and the air flow part are an integrally formed structure.

16. A drying assembly, characterized in that, Including: A drying device; The accessory according to any one of claims 1 to 15.

17. The drying assembly according to claim 16, characterized in that, The end of the drying device has an air outlet part for outputting air flow and a radiation part for outputting infrared radiation; The accessory is detachably installed on the drying device, the air inlet corresponds to the air outlet part, and a hollowed-out area corresponding to the radiation part is formed on the accessory.

18. The drying component according to claim 17, wherein, On the accessory, a hollowed-out area is formed between the air flow part and the installation part, and the outer side wall of the air flow part extends across the hollowed-out area and is connected to the installation part.

19. The drying component according to claim 17, wherein, The accessory further includes a covering formed of a heat-resistant material and / or a reflective material, and the covering covers the air flow portion and the area of the mounting portion facing the radiation portion.

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