A high-temperature resistant air outlet structure for hair dryers

Abstract

This utility model discloses a high-temperature resistant air outlet structure for a hair dryer, including a hair dryer body, an insulation cylinder installed inside the air outlet near the hair dryer body, a heating element and a baffle filter installed inside the insulation cylinder; the insulation cylinder is also provided with a high-temperature resistant embedded part, and the baffle filter is installed inside the high-temperature resistant embedded part. The high-temperature resistant embedded part is tightly connected to the insulation cylinder through a special structural design. When extreme high temperatures exceed the insulation cylinder's tolerance range, the insulation cylinder will soften, and the high-temperature resistant embedded part acts like a fixed bracket to support the insulation cylinder, maintain its shape, and thus keep the baffle filter fixed, preventing it from falling off or shifting.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat insulation structure for hair dryers, specifically a high-temperature resistant air outlet structure for hair dryers. Background Technology

[0002] Hair dryers generally consist of an outer shell and an inner shell. The inner shell, located near the air outlet, is a heat insulation tube. Inside the heat insulation tube are the heating wire windings and the negative ion generator. At the front of the heat insulation tube is an air outlet safety filter. Although the heat insulation tube is made of high-temperature resistant material, under extreme blockage conditions and continuous high temperatures at the air outlet, the heat insulation tube can easily melt and soften, causing the air outlet safety filter to fall off and creating a safety problem. Utility Model Content

[0003] The purpose of this invention is to provide a high-temperature resistant air outlet structure for a hair dryer, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A high-temperature resistant air outlet structure for a hair dryer includes a hair dryer body, an insulation cylinder installed inside the air outlet near the hair dryer body, and a heating element and a baffle filter installed inside the insulation cylinder.

[0006] The heat insulation cylinder is also equipped with a high-temperature resistant embedded part, and the baffle filter screen is installed inside the high-temperature resistant embedded part.

[0007] In a further technical solution, the high-temperature resistant embedded part is cylindrical and embedded inside the heat insulation cylinder; or it is set on the inner side of the heat insulation cylinder.

[0008] In a further technical solution, the high-temperature resistant embedded part is a metal cylinder with a thickness of 0.2mm-0.5mm.

[0009] In a further technical solution, the high-temperature resistant embedded part has several through holes on its outer periphery, and the heat insulation cylinder has several protrusions that match the through holes.

[0010] In a further technical solution, the front end of the high-temperature resistant embedded part is provided with a first step, which is used to define the position of the baffle filter screen, and the inner side of the heat insulation cylinder is provided with a second step corresponding to the first step.

[0011] In a further technical solution, the inner side of the heat insulation cylinder is provided with a limiting rib, and the outer periphery of the partition filter screen is provided with a notch that cooperates with the limiting rib.

[0012] A further technical solution is that the middle part of the baffle filter screen is provided with a flow guide cone, the outer periphery of the flow guide cone is provided with ventilation holes, and the adjacent ventilation holes are provided with reinforcing stamping recesses.

[0013] In a further technical solution, the end of the heating component is fitted with a first step to form a clearance, which is used to fix the filter screen with the flow guide cone.

[0014] In a further technical solution, the baffle filter is made of metal with a thickness of 0.8mm-12mm, and a ceramic oil protective layer is attached to the surface of the baffle filter.

[0015] A further technical solution is provided, wherein the heating component includes a mica tube and a mica support. The mica support is formed by cutting and molding three mica sheets with a thickness of 0.8 to 1.5 mm and interlocking them to form six radially oriented support plates. Six air ducts are formed between the six support plates. A negative ion generator is installed in the air duct. Several continuous limiting teeth are provided on the outer edge of the support plates. A heating wire winding is wound on the limiting teeth. The mica tube is formed by rolling a single mica sheet with a thickness of 0.2 to 0.5 mm into a cylindrical shape. The mica tube is embedded in the heat insulation tube and sleeved on the outside of the mica support to separate the generating end of the negative ion generator from the high-temperature resistant embedded part. The mica tube separates the heating wire winding from the heat insulation tube.

[0016] The beneficial effects of this utility model are:

[0017] In this utility model, the high-temperature resistant embedded part is tightly connected to the heat insulation cylinder through a special structural design. When extreme high temperature exceeds the heat insulation cylinder's tolerance, the heat insulation cylinder will soften. The high-temperature resistant embedded part acts like a fixed bracket to support the heat insulation cylinder, maintain its shape, and thus maintain the fixed function of the baffle filter screen, preventing the baffle filter screen from falling off or shifting.

[0018] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] Figure 1 Disassembly of the hair dryer body of this utility model Figure 1 .

[0020] Figure 2 Disassembly of the hair dryer body of this utility model Figure 2 .

[0021] Figure 3 : Disassembly diagram of the heat insulation cylinder and the baffle filter screen of this utility model.

[0022] Figure 4 Disassembly diagram of the heat insulation cylinder and high-temperature resistant embedded parts of this utility model.

[0023] Figure 5 : Structural diagram of the baffle filter and heating element of this utility model.

[0024] Figure 6 : A cross-sectional view of some components of this utility model.

[0025] Figure reference numerals: 1-Hair dryer body, 11-Outer shell, 12-Inner support, 13-Fan, 21-Insulation cylinder, 22-High temperature resistant embedded part, 23-Through hole, 24-Protrusion, 25-First step, 26-Second step, 27-Limiting rib, 28-Through hole, 31-Mica cylinder, 32-Mica support, 33-Negative ion generator, 34-Heating wire winding, 35-Avoided space, 36-Limiting tooth, 4-Blocking filter, 41-Notch, 42-Guide cone, 43-Ventilation hole, 44-Reinforced stamping indentation. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] Please refer to Figure 1-6 ;

[0028] The high-temperature resistant structure described in this utility model aims to avoid the risk of the heat insulation cylinder 21 softening and causing the filter screen 4 to fall off under extreme high temperatures. Specifically, it includes a hair dryer body 1, which consists of a shell 11, an inner support 12, a fan 13, and a controller, among other necessary components. Specific details can be found in existing technologies and will not be repeated here. A heat insulation cylinder 21 is installed near the air outlet of the hair dryer body 1, and a heating element is installed inside the heat insulation cylinder 21. During use, the fan 13 draws outside air into the hair dryer, heats the air after it passes through the heating element, and then outputs it from the air outlet. Under normal circumstances, the airflow is fast, therefore... The heat will be carried away from the heating element, so that the heat transferred to the heat insulation cylinder 21 is still within its tolerance range and will not melt. However, if the fan 13 is damaged or blocked, the heat of the heating element cannot be effectively dissipated, causing the heat to accumulate continuously and exceed the tolerance range of the heat insulation cylinder 21, causing the heat insulation cylinder 21 to soften or melt. The baffle filter 4 is usually clipped or abutted against the inner side of the outer end of the heat insulation cylinder 21 with the help of external parts, or other methods. When the heat insulation cylinder 21 softens or melts and causes itself to deform, it can no longer fix the baffle filter 4, so there is a risk that the baffle filter 4 will fall off.

[0029] In this embodiment, a high-temperature resistant embedded part 22 is provided on the heat insulation cylinder 21, and the baffle filter 4 is installed inside the high-temperature resistant embedded part 22. The high-temperature resistant embedded part 22 is tightly connected to the heat insulation cylinder 21 through a special structural design. When an extreme high temperature exceeds the tolerance range of the heat insulation cylinder 21, the heat insulation cylinder 21 will soften. The high-temperature resistant embedded part 22 acts as a fixed bracket to support the heat insulation cylinder 21, so as to maintain the inner diameter of the heat insulation cylinder 21 at the location of the high-temperature resistant embedded part 22, thereby maintaining the baffle filter 4 and preventing the baffle filter 4 from falling off or shifting. After the heat insulation cylinder 21 cools down, it will harden again and return to its original state.

[0030] There are many ways to combine the high-temperature resistant embedded part 22 with the heat insulation cylinder 21. For example, a graphene composite aerogel heat insulation layer can be added to the inside of the heat insulation cylinder 21 to reduce the heat transfer to the heat insulation cylinder 21. Even in the case of extreme high temperature, the heat insulation cylinder 21 will not soften, ensuring the fixing effect of the baffle filter 4. Although the above implementation method can achieve a good heat insulation effect, the manufacturing process is complicated and not conducive to production. Therefore, another solution is proposed.

[0031] The embodiment of this utility model regarding the high-temperature resistant embedded part 22 is described in reference to... Figure 4 The high-temperature resistant embedded part 22 is cylindrical and is embedded inside the heat insulation cylinder 21 or set on the inner side of the heat insulation cylinder 21. The high-temperature resistant embedded part 22 is prefabricated during the production process, and then the high-temperature resistant embedded part 22 is pre-embedded into the mold for injection molding of the heat insulation cylinder 21, so that the heat insulation cylinder 21 and the high-temperature resistant embedded part 22 are firmly fixed together. At this time, the high-temperature resistant embedded part 22 is equivalent to the support frame of the heat insulation cylinder 21. Although the high-temperature resistance of the heat insulation cylinder 21 is not enhanced, the connection effect between the materials that make up the heat insulation cylinder 21 is strengthened. Therefore, even in high-temperature environments that exceed the heat insulation cylinder 21, the inner diameter of the heat insulation cylinder 21 at the location of the high-temperature resistant embedded part 22 can still be maintained, avoiding softening and deformation that would cause the baffle filter 4 to fall off. Preferably, the heat insulation cylinder 21 is made of high-temperature resistant nylon material, and the length of the high-temperature resistant embedded part 22 is less than the length of the heat insulation cylinder 21, or the high-temperature resistant embedded part 22 is only set at the position of the heat insulation cylinder 21 near the air outlet.

[0032] Based on the above, the high-temperature resistant embedded part 22 is a metal cylinder. The high-temperature resistant embedded part 22 mainly plays a supporting role. Therefore, it does not need to be too thick to reduce costs. The thickness is 0.2mm-0.5mm, which will not obstruct normal airflow.

[0033] Further explanation of the high-temperature resistant embedded part 22: In one embodiment, the high-temperature resistant embedded part 22 can be formed into a cylindrical shape by surrounding a number of axial and radial steel wires, and a number of through holes 23 are formed therein; in another embodiment, a number of through holes 23 are uniformly formed on a metal plate by stamping and then wound into a cylindrical shape. Since the latter production method is simpler and more reliable, the latter is preferred.

[0034] Based on the above, before producing the heat insulation cylinder 21, the high-temperature resistant embedded part 22 is pre-embedded in the mold and then injection molded. Since the high-temperature resistant embedded part 22 has through holes 23, several protrusions 24 matching the through holes 23 are provided in the heat insulation cylinder 21. With this structure, the high-temperature resistant embedded part 22 and the heat insulation cylinder 21 can be firmly fixed. Even if the heat insulation cylinder 21 softens, it will still adhere to the high-temperature resistant embedded part 22.

[0035] In this embodiment of the utility model, reference is made to Figure 3 and Figure 4 When manufacturing the high-temperature resistant embedded part 22, a first step 25 is provided radially at its leading edge, and a second step 26 corresponding to the first step 25 is provided on the inner side of the heat insulation cylinder 21. That is to say, the heat insulation cylinder 21 covers the entire outer surface of the high-temperature resistant embedded part 22, and the second step 26 covers the outer side of the first step 25. The second step 26 is formed together with the injection molding of the heat insulation cylinder 21, while the first step 25 defines the position of the baffle filter 4. When the heat insulation cylinder 21 is softened under extreme high temperature conditions, the high temperature generated by the heating component is far from reaching the temperature that causes the high-temperature resistant embedded part 22 to deform because it is made of metal. Therefore, the inner diameter of the high-temperature resistant embedded part 22 will not increase, so the first step 25 always maintains its initial state, thereby preventing the baffle filter 4 from falling out.

[0036] Furthermore, the second step 26 is provided with through holes 28 for pre-supporting the first step 25 of the high-temperature resistant embedded part 22. The number of through holes is four and they are evenly distributed on the second step 26.

[0037] Preferably, a limiting rib 27 is provided on the inner side of the heat insulation cylinder 21, and a notch 41 that cooperates with the limiting rib 27 is provided on the outer periphery of the partition filter 4, which can prevent the partition filter 4 from rotating.

[0038] The embodiment of this utility model regarding the baffle filter 4 is described in reference to... Figure 5The baffle filter 4 has a flow guide cone 42 in the middle, and ventilation holes 43 are provided on the outer periphery of the flow guide cone 42. There are reinforcing stamping recesses 44 between adjacent ventilation holes 43. The airflow blows directly towards the baffle filter 4, and under the action of the flow guide cone 42, the airflow is guided to the ventilation holes 43 on the outer periphery. Preferably, the ventilation holes 43 are slot holes. In addition, the baffle filter 4 is made of metal sheet by cutting and stamping. The thickness of the metal sheet is 0.8mm-1.2mm. The metal sheet is preferably steel sheet or iron sheet. Furthermore, the surface of the baffle filter 4 is coated with a ceramic oil protective layer, which not only provides surface corrosion resistance and high temperature resistance, but also reduces the influence of metal on the ion emission of nearby negative ion generators.

[0039] Most methods of connecting the baffle filter 4 use a snap-fit ​​method for fixing. However, snap-fit ​​installation requires an interference fit, which may damage the high-temperature resistant embedded part 22. Therefore, this embodiment uses an abutment method for installation. When installing the baffle filter 4, it is inserted from the end of the heat insulation cylinder 21 away from the first step 25 and finally abuts against the first step 25. Then, the heating element is installed into the heat insulation cylinder 21, so that the end of the heating element and the first step 25 form a limiting groove to fix the baffle filter 4. Preferably, the heating element can be fixed by means of the inner bracket 12 or other components in the hair dryer body 1. At least a partial gap is provided between the outer wall of the heating element and the heat insulation cylinder 21.

[0040] One embodiment of this utility model concerning a heating component is described below. Figure 5 Specifically, it includes a mica tube 31 and a mica support 32. Since the mica support 32 mainly serves to support, insulate, and insulate, preferably, the mica support 32 is made of three mica plates with a thickness of 0.8 to 1.5 mm, cut and formed, and interlocked to form six radially oriented support plates. Six air ducts are formed between the six support plates, and a negative ion generator 33 is installed in each air duct. Several continuous limiting teeth 36 are provided on the outer edge of the support plates, and heating wire windings 34 are wound on the limiting teeth 36. Clearance positions 35 are formed at the front ends of the six support plates to avoid gaps. Position 35 corresponds to the flow guide cone 42. Preferably, the mica tube 31 is made of a single mica sheet with a thickness of 0.2 to 0.5 mm rolled into a cylindrical shape. The mica tube 31 is embedded in the heat insulation tube 21 and is fitted with the outside of the mica bracket 32 ​​to separate the generating end of the negative ion generator 33 from the high-temperature resistant metal embedded part 22, thus avoiding the influence of the high-temperature resistant metal embedded part 22 on the negative ion generator 33. At the same time, the mica tube 31 separates the heating wire winding 34 from the heat insulation tube 21, reducing the heat conduction to the heat insulation tube 21 and causing more heat to be blown out through the ventilation hole 43.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-temperature resistant air outlet structure for a hair dryer, comprising a hair dryer body (1), an insulation cylinder (21) installed inside the air outlet near the hair dryer body (1), wherein a heating element and a baffle filter (4) are installed inside the insulation cylinder (21), characterized in that: The heat insulation cylinder (21) is also provided with a high-temperature resistant embedded part (22), and the baffle filter (4) is installed on the inner side of the high-temperature resistant embedded part (22).

2. The high-temperature resistant air outlet structure of a hair dryer according to claim 1, characterized in that: The high-temperature resistant embedded part (22) is cylindrical and is embedded in the heat insulation cylinder (21).

3. The high-temperature resistant air outlet structure of a hair dryer according to claim 2, characterized in that: The high-temperature resistant embedded part (22) is a metal cylinder with a thickness of 0.2mm-0.5mm.

4. The high-temperature resistant air outlet structure of a hair dryer according to claim 2, characterized in that: The high-temperature resistant embedded part (22) has several through holes (23) on its outer periphery, and the heat insulation cylinder (21) has several protrusions (24) that match the through holes (23).

5. The high-temperature resistant air outlet structure of a hair dryer according to claim 1, characterized in that: The front end of the high-temperature resistant embedded part (22) is provided with a first step (25), which is used to define the position of the baffle filter (4), and the heat insulation cylinder (21) is provided with a second step (26) corresponding to the first step (25).

6. The high-temperature resistant air outlet structure of a hair dryer according to claim 1, characterized in that: The heat insulation cylinder (21) is provided with a limiting rib (27) on the inner side, and the baffle filter (4) is provided with a notch (41) on the outer periphery that cooperates with the limiting rib (27).

7. The high-temperature resistant air outlet structure of a hair dryer according to claim 1, characterized in that: The baffle filter (4) has a flow guide cone (42) in the middle, and ventilation holes (43) are provided on the outer periphery of the flow guide cone (42). There are reinforcing stamping recesses (44) between adjacent ventilation holes (43).

8. The high-temperature resistant air outlet structure of a hair dryer according to claim 7, characterized in that: The end of the heating component is fitted with the first step (25) to form a clearance (35), which is used to fix the baffle filter (4) in conjunction with the flow guide cone (42).

9. The high-temperature resistant air outlet structure of a hair dryer according to claim 7, characterized in that: The baffle filter (4) is made of metal and has a thickness of 0.8mm-1.2mm. A ceramic oil protective layer is attached to the surface of the baffle filter (4).

10. The high-temperature resistant air outlet structure of a hair dryer according to claim 1, characterized in that: The heating component includes a mica tube (31) and a mica support (32). The mica support (32) is formed by cutting and molding three mica plates with a thickness of 0.8 to 1.5 mm and interlocking them to form six radial support plates. Six air ducts are formed between the six support plates. A negative ion generator (33) is provided in the air duct. Several continuous limiting teeth (36) are provided on the outer edge of the support plate. A heating wire winding (34) is wound on the limiting teeth (36). The mica tube (31) is made by rolling a single mica sheet with a thickness of 0.2 to 0.5 mm into a cylindrical shape. The mica tube (31) is embedded in the heat insulation tube (21) and sleeved on the outside of the mica support (32) to separate the generating end of the negative ion generator (33) from the high-temperature resistant embedded part (22). The mica tube (31) separates the heating wire winding (34) from the heat insulation tube (21).

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