Hair dryer nozzle and hair dryer

Abstract

This utility model discloses a hair dryer nozzle and a hair dryer having the nozzle. The nozzle includes: an air outlet assembly (24) disposed at the end of the nozzle (20) and having an air outlet (241); a fluid channel (22) communicating with the air outlet (241); and at least one negative ion emitting needle (29) with its tip (291) extending into the fluid channel (22). The air outlet assembly (24) has a window (242) disposed independently of the air outlet (241) and corresponding to the positions of the tips (291) of the plurality of negative ion emitting needles (29) along the axial direction of the nozzle (20). The hair dryer according to this utility model can ensure that the blown air has a high negative ion content to improve the care effect.

Description

Technical Field

[0001] This utility model relates to the field of nursing technology, and in particular to a hair dryer nozzle and hair dryer. Background Technology

[0002] Currently, some hair dryers are equipped with negative ion generators to produce negative ions, thereby using the airflow containing negative ions to care for the user's hair.

[0003] However, the negative ions generated by the negative ion generators in existing hair dryers often cannot flow out smoothly with the airflow, and the concentration of negative ions in the airflow blown onto the user's hair cannot be guaranteed.

[0004] Therefore, it is necessary to provide an improved hair dryer that increases the negative ion content and concentration of the airflow to achieve better skincare results.

[0005] The background description is provided for the purpose of understanding the relevant technologies in this field and is not intended as an admission of prior art. Utility Model Content

[0006] The present invention aims to provide a hairdryer nozzle and hairdryer that can ensure the content and concentration of negative ions in the blown airflow to achieve better care results.

[0007] In some embodiments of this utility model, a nozzle for a hair dryer is provided, which may include:

[0008] An air outlet assembly is disposed at one end of the air duct and has an air outlet.

[0009] A fluid channel connected to the air outlet;

[0010] At least one negative ion emitting needle, the tip of which extends into the fluid channel;

[0011] The air outlet component has a window, which is set independently of the air outlet and is positioned on the axial direction of the air duct corresponding to the tip of the negative ion emitting needle.

[0012] In some embodiments, the window is configured as an elongated slot extending circumferentially along the duct, the circumferential length of the window covering the radial projection range of the tips of at least two negative ion emitting needles.

[0013] In some embodiments, it further includes: a heating wire support, wherein an annular fluid channel is formed between the outer wall of the heating wire support and the inner wall of the air duct, and the heating wire support supports the heating wire in the fluid channel.

[0014] In some embodiments, the negative ion emitting needle includes an integrally formed needle tip and an extension, the extension extending axially along the heating wire support and entering the fluid channel through a clearance structure.

[0015] In some embodiments, the clearance structure includes: a clearance groove provided at the end of the heating wire bracket near the air outlet assembly; an axially extending receiving groove of the inner cylinder of the heating wire bracket, wherein the extension is received within the receiving groove; a connecting portion formed by the axially overlapping of the receiving groove and the clearance groove, wherein the extension is radially bent through the connecting portion and enters the fluid channel.

[0016] In some embodiments, the limiting post disposed in the receiving groove cooperates with the second limiting hole of the extension, and / or the positioning recess on the side of the receiving groove cooperates with the positioning protrusion on the side of the extension to fix the position of the negative ion emitting needle.

[0017] In some embodiments, the air outlet assembly has a first end cap having an inner flange and an outer flange, the end of the outer flange abutting against the front end of the clearance groove to close the clearance groove, the inner flange and the outer flange protruding axially inward to form an annular slot between the inner flange and the outer flange, and the end of the inner cylinder being inserted into the annular slot.

[0018] In some embodiments, the first end cap is an annular end cap, and the air outlet assembly has a second end cap located radially inside the first end cap, with a fluid gap formed between the second end cap and the inner flange of the first end cap.

[0019] In some embodiments, the inner flange has a radially inward annular protrusion located downstream of the fluid gap, the annular protrusion having a sloped section facing the fluid gap and an arcuate section facing away from the fluid gap.

[0020] In some embodiments, the air duct further includes a plurality of flow guides disposed on the heating wire support, the plurality of flow guides extending axially and spaced apart in the circumferential direction, and at least some of the flow guides having a plurality of wiring openings at the rear corresponding to the circumferential position;

[0021] The air duct also includes a first cable electrically connected to the heating wire, and at least a portion of the wiring opening is adapted to support the first cable.

[0022] In some embodiments, the duct further includes a negative ion generator, which is electrically connected to the plurality of negative ion emitting needles via a second cable, and at least a portion of the wiring openings are adapted to support the second cable.

[0023] In some embodiments, the air duct further includes a guide tube, which is coaxially arranged with the heating wire support and located radially outside the heating wire support, and the fluid channel is defined between the heating wire support and the guide tube.

[0024] In some embodiments, the air duct further includes: a first air inlet disposed at the other end of the air outlet away from the air duct; and

[0025] A fan assembly for generating airflow toward the air outlet.

[0026] In some embodiments of this utility model, a hair dryer is provided, including a handle and a blower tube according to the embodiments of this utility model. The handle is provided with a second air inlet, which forms a parallel air inlet channel with the first air inlet of the blower tube. This utility model embodiment provides a window for negative ion release on the air outlet assembly, independent of the air outlet, and positions this window axially with the tip of a negative ion emitting needle. This structural design allows the airflow passing through the needle tip to flow directly to the user without obstruction through the dedicated window, thereby optimizing the release path of negative ions generated at the needle tip and increasing the negative ion content and concentration of the outflowing airflow. Simultaneously, the correspondence between the window and the negative ion needle tip makes the negative ion release direction more directional and concentrated, ensuring effective contact between the airflow carrying negative ions and the user's hair, thus significantly enhancing the hair care effect of the hair dryer and the user experience.

[0027] Other optional features and technical effects of the embodiments of this utility model are partly described below and partly apparent from reading this document. Attached Figure Description

[0028] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The elements shown are not limited to the scale shown in the drawings, and the same or similar reference numerals in the drawings denote the same or similar elements, wherein:

[0029] Figure 1 This is a first exemplary perspective view of a hair dryer according to an embodiment of the present utility model;

[0030] Figure 2 This is a second exemplary perspective view of a hair dryer according to an embodiment of the present utility model;

[0031] Figure 3 This is a front view of the blower barrel according to an embodiment of the present utility model;

[0032] Figure 4 yes Figure 3 Enlarged structural diagram of region A in the middle;

[0033] Figure 5This is a rear view of the blower barrel according to an embodiment of the present utility model;

[0034] Figure 6 This is an exemplary perspective view of the blower barrel according to an embodiment of the present utility model;

[0035] Figure 7 This is an exemplary perspective view of the blower barrel according to an embodiment of the present utility model;

[0036] Figure 8 yes Figure 7 A magnified structural diagram of region B in the middle;

[0037] Figure 9 An exemplary perspective view of the blower barrel according to an embodiment of the present utility model;

[0038] Figure 10 An exemplary exploded view of the blower casing according to an embodiment of the present utility model;

[0039] Figure 11 This is an exemplary cross-sectional view of the blower casing according to an embodiment of the present invention; and

[0040] Figure 12 yes Figure 11 A magnified structural diagram of region C in the middle.

[0041] Figure label:

[0042] 100. Hair dryer;

[0043] 10. Handle; 11. Second air inlet;

[0044] 20. Air duct; 21. Air duct outer shell; 22. Fluid channel; 23. First air inlet; 24. Air outlet assembly; 241. Air outlet; 242. Window; 243. Annular protrusion; 244. Sloping section; 245. Arc-shaped section; 246. Inner flange; 247. Outer flange; 248. Annular slot; 249. First end cap; 25. Heating wire bracket; 251. Heating wire; 252. Connecting part; 253. Inner cylinder; 254. 255. Receiving groove; 256. Limiting post; 257. Positioning recess; 258. Sleeve; 259. Clearance groove; 2000. Flow guide; 2000. Cable routing opening; 2000. Flow guide tube; 2000. First limiting hole; 2000. Second end cap; 2000. Fluid gap; 2000. Negative ion emitting needle; 2000. Needle tip; 2000. Extension; 2000. Second limiting hole; 2000. Positioning protrusion; 2000. First cable; 2000. Second cable;

[0045] 30. Negative ion generator;

[0046] 40. Fan assembly. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. Here, the illustrative embodiments and descriptions of this utility model are used to explain the present utility model, but are not intended to limit the present utility model.

[0048] In this embodiment of the utility model, unless otherwise explicitly stated, the terms "upstream" and "downstream" should be understood as terms of relative positional relationship based on the direction of fluid flow. On the fluid flow path, the direction of the airflow source is "upstream" and the direction of the airflow outlet is "downstream".

[0049] As mentioned earlier, the negative ions generated by the negative ion generators of existing hair dryers often cannot flow out smoothly with the airflow. For example, the airflow passing through the negative ion generator is often obstructed by the air outlet cover or other air outlet mechanisms, resulting in unnecessary losses and dispersion. Consequently, the hair dryer cannot guarantee the negative ion content and concentration of the airflow blown onto the user's hair.

[0050] In response, this utility model provides a hair dryer and a hair dryer with the hair dryer, which can ensure the negative ion content and concentration of the blown air, providing users with better care effects.

[0051] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples.

[0052] In some embodiments of this utility model, reference is made to Figure 1 and Figure 2 A hair dryer 100 is provided, which may include a handle 10, a blower 20 communicating with the handle 10, and a blower assembly 40. In this embodiment, referring to reference... Figure 1 and Figure 3 The handle 10 has a second air inlet 11, and one end of the air duct 20 may have an air outlet component 24, so that airflow can enter the handle 10 from the second air inlet 11 and flow to the air duct 20 connected thereto, and flow out at least through the air outlet 241 of the air outlet component 24.

[0053] In some embodiments, reference Figure 2 The fan assembly 40 is used to generate airflow toward the air outlet 241. Figure 2 In the illustrated embodiment, the fan assembly 40 is disposed within the air duct 20. In another embodiment, the fan assembly 40 may also be disposed within the handle 10, in which case the air duct 20 may optionally be configured as an axially hollow structure.

[0054] In some embodiments, reference Figure 2When the fan assembly 40 is installed in the air duct 20, the other end of the air duct 20 may also have a first air inlet 23, and the fan assembly 40 is disposed between the first air inlet 23 and the air outlet assembly 24. In this embodiment, external air enters the air duct 20 not only through the aforementioned second air inlet 11 via the handle 10, but also through the first air inlet 23. In this embodiment, the second air inlet 11 and the first air inlet 23 of the air duct 20 form a parallel air intake channel. In this embodiment, this design of a parallel air intake channel with two air inlets improves the air intake efficiency, and the first air inlet 23 has a shorter airflow path than the second air inlet 11 and the fan assembly 40, thereby reducing the working pressure of the fan assembly 40, increasing the air output of the blower, and improving the blowing effect.

[0055] In some embodiments of this utility model, the hair dryer 100 may further include a negative ion generator 30, which can be used to generate negative ions. Specifically, the negative ion generator 30 can release negative ions through a negative ion emitting end electrically connected to it, such as a negative ion emitting needle 29. The released negative ions can flow out from the air outlet assembly 24 with the airflow, thereby caring for the user's hair. Figure 2 In the illustrated embodiment, the negative ion generator 30 is disposed within the air duct 20. In another embodiment, the negative ion generator 30 may also be disposed within the handle 10; this embodiment of the present invention does not impose any limitation on this.

[0056] In some embodiments of this utility model, reference is made to Figures 1 to 12 A ventilation duct 20 is also provided. In this embodiment, the ventilation duct 20 may have a duct housing 21, and the ventilation duct 20 has two ends. In some embodiments, the ventilation duct 20 includes an air outlet assembly 24, which is disposed at one end of the ventilation duct 20 and has an air outlet 241. Figure 2 In the illustrated embodiment, the air outlet 241 is configured, for example, as an annular air outlet. In some embodiments, refer to Figure 6 A fluid channel 22 is formed inside the air duct 20, and the air outlet 241 is connected to the fluid channel 22, so that the airflow in the air duct 20 flows to the air outlet assembly 24 through the fluid channel 22, and then at least part of the airflow flows out from the air outlet 241.

[0057] As previously mentioned, the hair dryer 100 may include a negative ion generator 30. Accordingly, in some embodiments, the hair dryer 20 includes at least one negative ion emitting needle 29, the tip 291 of which extends into the fluid channel 22. In this embodiment, the tip 291 of the negative ion emitting needle 29 operates based on the principle of tip discharge to generate negative ions, which flow out with the airflow in the fluid channel 22, thereby enhancing the hair care effect of the hair dryer. Figure 3 and Figure 4 In the illustrated embodiment, the air duct 20 includes two negative ion emitting needles 29. However, it is understood that in other embodiments, the air duct 20 may include more or fewer negative ion emitting needles 29, and this utility model does not limit this.

[0058] In some embodiments of this utility model, reference is made to Figure 3 and Figure 4 The air outlet assembly 24 further includes a window 242, which is independent of the air outlet 241. In this embodiment, the window 242 can be used to expose the needle tip 291, allowing the airflow exiting the air outlet 241 to carry negative ions generated by the needle tip 291. In some embodiments, the window 242 is positioned axially with respect to the needle tip 291 of the negative ion emitting needle 29 in the air duct 20. In some embodiments, reference... Figure 3 and Figure 4 Along the axial direction of the air duct 20, the axial projection contour of the window 242 covers at least a portion of the axial projection of the needle tip 291. In this embodiment of the invention, by setting a window 242 for negative ion release on the air outlet assembly, independent of the air outlet 241, and aligning the window 242 with the position of the needle tip 291 of the negative ion emitting needle 29 in the axial direction of the air duct 20, this structural design allows the airflow passing through the needle tip 291 to flow directly to the user without obstruction through the dedicated window 242, thereby optimizing the release path of the negative ions generated by the needle tip 291 and increasing the negative ion content and concentration of the outflowing airflow. Simultaneously, the corresponding arrangement of the window 242 and the negative ion needle tip 291 also makes the negative ion release direction more directional and concentrated, ensuring effective contact between the airflow carrying negative ions and the user's hair, thereby significantly enhancing the hair care effect of the hair dryer and the user experience.

[0059] In some embodiments, the plane containing the needle tip 291 is inclined to the plane containing the window 242. Figure 3In the illustrated embodiment, the angle between the plane containing the needle tip 291 and the plane containing the window 242 is within the range of 45°±10°. This increases the windward area of ​​the needle tip 291 while ensuring smooth airflow, allowing the negative ions generated by the needle tip 291 to be fully carried away by the airflow, thereby increasing the negative ion content in the airflow and improving the hair care effect. In an optional embodiment, the plane containing the needle tip 291 is parallel to the plane containing the window 242; this invention does not impose any limitations on this.

[0060] In some embodiments, the window 242 is configured as an elongated slot extending circumferentially along the air duct 20, and the position of the window 242 in the axial direction of the air duct 20 corresponds to the position of the tip 291 of one or more of the negative ion emitting needles 29. In some embodiments, the circumferential length of the window 242 covers the radial projection range of the tip 291 of at least two negative ion emitting needles 29. For example, in Figure 3 and Figure 4 In the illustrated embodiment, window 242 corresponds to the tips 291 of two negative ion emitting needles 29. However, it is understood that in other embodiments, window 242 may have other reasonable opening shapes and / or correspond to other numbers of needle tips 291, and this invention does not limit this.

[0061] In some embodiments, in conjunction with reference Figures 1 to 4 The air outlet assembly 24 has a first end cap 249, which is configured as an annular end cap, and an air outlet 241 is formed on the first end cap 249. In this embodiment, the window 242 is independently disposed radially inside the air outlet 241. In another embodiment, the window 242 may also be independently disposed radially outside the air outlet 241, which falls within the protection scope of this utility model.

[0062] In other embodiments of the present invention, the duct 20 has an annular body defining an axially extending hollow portion, for example, forming a generally cylindrical hollow portion. In some embodiments, the air outlet assembly 24 is disposed at the end of the duct 20 and has an air outlet 241 located radially outward of the hollow portion. The air outlet 241 may optionally be configured as an annular air outlet 241 or a plurality of discontinuous circumferentially extending air outlets 241, and the present invention does not limit this.

[0063] In some embodiments, a window 242 may be provided radially between the air outlet 241 and the hollow portion of the air outlet assembly 24, thereby effectively releasing negative ions into the airflow through the window 242, increasing the negative ion content of the outflowing airflow, and thus enhancing the hair care effect. In other embodiments, the window 242 may optionally be provided on the inner wall of the hollow portion near the air outlet assembly 24.

[0064] In some embodiments of this utility model, reference is made to Figure 3 and Figure 4 The air outlet assembly 24 also has a (second) window axially symmetrical to window 242, which may optionally be a process window. However, in another embodiment, a plurality of the aforementioned negative ion emitting needles 29 may also be correspondingly arranged on the inner side of the (second) window, and positioned axially with the needle tips 291 of the negative ion emitting needles 29. Thus, by increasing the number and distribution of negative ion release windows, the release efficiency and uniformity of negative ions can be further improved. This (second) window, together with window 242, can form a multi-point negative ion release structure, increasing the content and concentration of negative ions in the outflowing airflow. Figure 3 and Figure 4 In the illustrated embodiment, two symmetrically arranged windows 242 are shown, but it is understood that more windows 242 may be arranged in other embodiments, and this utility model does not limit this.

[0065] In some embodiments, refer to Figure 6 The air duct 20 also includes a heating wire support 25. An annular fluid channel 22 is formed between the outer wall of the heating wire support 25 and the inner wall of the air duct 20. The fluid channel 22 is located radially outward of the heating wire support 25, and the heating wire support 25 supports the heating wire 251 within the fluid channel 22. In this embodiment, referring to... Figure 6 The heating wire support 25 is, for example, constructed in a cylindrical shape, and the fluid channel 22 forms a fluid annular channel on the radial outer side of the heating wire support 25. The heating wire 251 is used to heat the airflow flowing through the fluid channel 22.

[0066] In some embodiments, continue to refer to Figure 6 The air duct 20 may also include a guide tube 27, which is coaxially arranged with the heating wire support 25 and is located radially outside the heating wire support 25, for example, configured as a guide tube. The fluid channel 22 is defined between the heating wire support 25 and the guide tube 27.

[0067] In some embodiments, in conjunction with reference Figure 6 and Figure 10 The negative ion emitting needle 29 further includes an extension 292 integrally formed or fixedly connected to the needle tip 291, the extension 292 extending along the heating wire support 25 toward the air outlet assembly 24. In some embodiments, the extension 292 extends axially along the heating wire support 25 and enters the fluid channel 22 through a clearance structure. Figure 10In the illustrated embodiment, the extension 292 extends outward along the heating wire support 25 toward the air outlet assembly 24, for example, extending within the heating wire support 25.

[0068] In some embodiments, the clearance structure may include a clearance groove 258 and a receiving groove 254. In some embodiments, the clearance structure may include a clearance groove 258 disposed at the end of the heating wire support 25 near the air outlet assembly 24. In this embodiment, the receiving groove 254 extends axially from the inner cylinder 253 of the heating wire support 25, and the extension 292 is accommodated within the receiving groove 254. In some embodiments, the receiving groove 254 and the clearance groove 258 partially overlap in the axial direction to form a connecting portion 252, and the extension 292 is radially bent through the connecting portion 252 to enter the fluid channel 22. In this embodiment, the clearance structure can be used to provide a preset turning channel for the negative ion emitting needle 29 to enter the fluid channel 22, enabling the negative ion emitting needle 29 to turn from inside the heating wire support 25 to enter the fluid channel 22.

[0069] In some embodiments, the extension 292 may extend along the interior of the heating wire support 25 toward the air outlet assembly 24. In this embodiment, the front end of the heating wire support 25 near the air outlet assembly 24 has a clearance groove 258, through which the negative ion emitting needle 29 bends radially outward and enters the fluid channel 22. In this embodiment, the circumferential position of the clearance groove 258 corresponds to the circumferential position of the aforementioned window 242. Thus, the needle tip 291, which bends radially outward via the clearance groove 258 and extends into the fluid channel 22, naturally corresponds to the position of the aforementioned window 242.

[0070] In some embodiments, reference Figures 7 to 10 The heating wire support 25 may further include an inner cylinder 253 and a sleeve 257 sleeved on the inner cylinder 253, the relief groove 258 is formed in the sleeve 257, and the extension 292 extends between the inner cylinder 253 and the sleeve 257.

[0071] In some embodiments, the inner cylinder 253 may have a receiving groove 254 extending generally axially, in which the extension 292 is received. The receiving groove 254 and the clearance groove 258 partially overlap in the axial direction to form a connecting portion 252, and the plurality of negative ion emitting needles 29 are bent radially outward through the connecting portion 252 into the fluid channel 22. For example, the ends of the receiving groove 254 and the clearance groove 258 partially overlap to form the connecting portion 252. Thus, the receiving groove 254 provides a predetermined extension space for the extension 292 of the negative ion emitting needle 29, enhancing the stable installation of the negative ion emitting needle 29 under high temperature and vibration environments. At the same time, the connecting portion 252 formed by the receiving groove 254 and the clearance groove 258 can ensure that the needle tip 291 is installed in a predetermined position and is axially capped. Furthermore, the design of the receiving slot 254 optimizes the use of internal space and helps to keep the outer surface of the heating wire support 25 that defines the fluid channel 22 smooth and clean.

[0072] In some embodiments, reference Figures 7 to 10 The receiving groove 254 also has a radially outwardly protruding limiting post 255, and the extension 292 of the negative ion emitting needle 29 has a second limiting hole 293. The second limiting hole 293 provided in the receiving groove 254 cooperates with the limiting post 255. Specifically, when the negative ion emitting needle 29 is installed in the receiving groove 254, the limiting post 255 extends through the second limiting hole 293 on the extension 292 of the negative ion emitting needle 29, thereby positioning the extension 292 of the negative ion emitting needle 29 within the receiving groove 254.

[0073] In some embodiments, continue to refer to Figures 7 to 10 The sleeve 257 may also have a first limiting hole 271, which cooperates with the limiting post 255. Specifically, when the sleeve 257 is fitted onto the inner cylinder 253, the limiting post 255 extends through the first limiting hole 271 on the sleeve 257, thereby securely positioning and fixing the sleeve 257 onto the inner cylinder 253. In this embodiment, the cooperation structure between the limiting post 255 and the first limiting hole 271 provides dual circumferential and axial positioning of the sleeve 257 relative to the inner cylinder 253, while also simplifying the assembly process and improving assembly efficiency.

[0074] In some embodiments, continue to refer to Figures 7 to 10When the sleeve 257 is fitted onto the inner cylinder 253, the limiting post 255 simultaneously passes through the second limiting hole 293 of the negative ion emitting needle and the first limiting hole 271 of the sleeve 257. Thus, the inner cylinder 253, the negative ion emitting needle 29, and the sleeve 257 are fixed as a whole, and the negative ion emitting needle 29 is stably limited and installed between the inner cylinder 253 and the sleeve 257, ensuring the stable installation of the negative ion emitting needle 29 under high-temperature vibration environments. In this embodiment, this structure also uses the sleeve 257 to separate the extension of the negative ion emitting needle 29 from the fluid channel 22, which helps to isolate the negative ion emitting needle 29 from the high-temperature airflow and extends the service life of the negative ion emitting needle 29.

[0075] In some embodiments, continue to refer to Figures 7 to 10 The receiving groove (254) may also be provided with a limiting post 255, which cooperates with the second limiting hole 293 of the extension 292, and / or the positioning recess 256 on the side of the receiving groove 254 cooperates with the positioning protrusion 294 on the side of the extension 292, so as to fix the negative ion emitting needle 29 in a position including but not limited to the axial direction. Specifically, the receiving groove 254 is provided with a positioning recess 256 on the side, which is, for example, arc-shaped. The extension 292 of the negative ion emitting needle 29 has a positioning protrusion 294 on the side, which is shaped to cooperate with the positioning recess 256. More specifically, when the negative ion emitting needle 29 is installed into the receiving groove 254, the positioning protrusion 294 on the side of the extension 292 enters the positioning recess 256 on the side of the receiving groove 254, so that the negative ion emitting needle 29 is positioned and prevented from rotating in the circumferential and axial directions.

[0076] In an alternative embodiment, the aforementioned clearance groove 258 may be omitted. In this embodiment, the extension 292 may also extend along the radial inner or outer surface of the heating wire support 25 towards the air outlet assembly 24. In some embodiments, the extension 292 may extend directly along the radial inner or outer surface of the heating wire support 25 towards the air outlet assembly 24 until it is near the front end of the heating wire support 25 before bending radially. This structure allows the needle tip 291 to be closer to the first end cap 249, and the airflow carrying negative ions has a shorter outlet path, thereby helping to provide an outflow airflow with a higher negative ion content.

[0077] In some embodiments, in conjunction with reference Figure 1 , Figure 2 and Figure 11The first end cap 249 has an inner flange 246 and an outer flange 247. The inner flange 246 and the outer flange 247 extend inward along the axial direction and form an annular slot 248. The front end of the inner cylinder 253 is inserted into the annular slot 248, and the end of the outer flange 247 abuts against the front end of the relief groove 258 to close the relief groove 258.

[0078] In some embodiments, reference Figure 1 and Figure 2 The first end cap 249 is an annular end cap, and the air outlet assembly 24 has a second end cap 28 located radially inside the first end cap 249. A fluid gap 281 is formed between the second end cap 28 and the inner flange 246 of the first end cap 249. In some embodiments, the rear end of the heating wire support 25 may optionally be provided with a cooling opening, through which cooling airflow flows to the second end cap 28 and out through the fluid gap 281, which may also be referred to as a cooling flow gap. In this embodiment, the cooling airflow can be used, for example, to cool electrical components such as circuit boards, ensuring that the electrical components and mechanical parts are kept within a suitable temperature range during operation, guaranteeing their normal operation and extending their service life.

[0079] In some embodiments, reference Figure 11 and Figure 12 The inner flange 246 has a radially inward annular protrusion 243, wherein the annular protrusion 243 is located downstream of the fluid gap 281 along the direction of airflow exiting the fluid gap 281. In this embodiment, the annular protrusion 243 has a sloped section 244 facing the fluid gap 281 and an arcuate section 245 facing away from the fluid gap 281. In this embodiment, along the axial direction near the duct 20, the projection of the sloped section 244 overlaps the projection of the fluid gap 281. In this embodiment, the airflow exiting the fluid gap 281 thus first contacts the sloped section 244 and is smoothly guided by the sloped section 244, avoiding turbulence caused by the airflow directly impacting the airflow exiting the outlet 241. Meanwhile, the airflow passing through the inclined section 244 further passes through the arc section 245, which further smooths out the change in airflow direction, allowing the cooling airflow to smoothly merge with the main airflow. This design of the inclined section 244 and the arc section 245 reduces airflow stratification and eddy phenomena, reduces the degree of turbulence at the air outlet, makes the airflow more uniform and comfortable, and effectively reduces noise during use.

[0080] In some embodiments, in conjunction with reference Figure 6 and Figure 11The air duct 20 also includes a plurality of flow guides 26 disposed on the heating wire support 25. These flow guides extend axially and are spaced apart in the circumferential direction. At least some of the flow guides 26 have a plurality of wiring openings 261 at their rear ends, corresponding to positions in the circumferential direction. Figure 11 In the illustrated embodiment, two guide members 26 with wiring openings 261 are shown, but it is understood that wiring openings 261 can be provided on more guide members 26 as needed. In this embodiment, the air duct 20 also includes a first cable 295 electrically connected to the heating wire 251, and at least a portion of the wiring openings 261 is adapted to support the first cable 295. In this embodiment, the first cable 295 is at least partially routed along the guide members 26 or between the guide members 26.

[0081] In some embodiments, the duct 20 further includes a negative ion generator 30, which is electrically connected to the plurality of negative ion emitting needles 29 via a second cable 296, and at least a portion of the wiring opening 261 is adapted to support the second cable 296. Figure 2 In the illustrated embodiment, the negative ion generator 30 is located at the rear of the air duct 20. However, it is understood that the negative ion generator 30 may also be located at other positions within the air duct 20, and this utility model does not impose any restrictions on this.

[0082] In this embodiment of the invention, through the design of multiple airflow guides 26 and wiring openings 261, the airflow guides 26 not only guide the airflow but also provide fixed support points for the first cable 295 and the second cable 296 through the wiring openings 261, significantly reducing the swaying of the first cable 295 and the second cable 296 in high-speed airflow and vibration environments. Simultaneously, the multiple circumferentially spaced support points provide a stable cable stabilization effect, effectively preventing accidental contact between the cable and the high-temperature heating wire 251, thus improving safety. Furthermore, this integrated design optimizes internal space utilization, achieving orderly cable arrangement while ensuring airflow guidance, and the cable routing method between the airflow guides 26 facilitates assembly and maintenance, improving assembly efficiency and product reliability.

[0083] This document describes several embodiments of the present invention. However, for the sake of brevity, the descriptions of the embodiments are not exhaustive, and identical or similar features or parts between the embodiments may be omitted. In this document, "one embodiment," "some embodiments," "example," "specific example," or "some examples" refer to at least one embodiment or example applicable to the present invention, but not all embodiments. The above terms do not necessarily mean referring to the same embodiment or example. Without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples.

[0084] In this document, it should be understood that, unless otherwise expressly defined, the directional terms such as “center,” “axial,” “radial,” “circumferential,” “longitudinal,” “lateral,” “length,” “width,” and “thickness,” as well as spatial position terms such as “up,” “down,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” and movement direction terms such as “clockwise” and “counterclockwise”, are all relative orientational relationships or positional descriptions defined based on the specific posture and orientation of the device shown in the accompanying drawings, and do not imply or limit that the device or element must have a certain specific orientation or be constructed or operated in a specific posture. Therefore, they should not be construed as limitations on this utility model.

[0085] The exemplary systems and methods of this invention have been specifically shown and described with reference to the foregoing embodiments, and are merely examples of the best mode for implementing the systems and methods. Those skilled in the art will understand that various changes can be made to the embodiments described herein without departing from the spirit and scope of this invention as defined in the appended claims when implementing the systems and / or methods.

Claims

1. A bell (20) for a hair dryer, characterized in that, include: An air outlet assembly (24) is disposed at one end of the air duct (20) and has an air outlet (241); A fluid channel (22) connected to the air outlet (241); At least one negative ion emitting needle (29) has its tip (291) inserted into the fluid channel (22); The air outlet assembly (24) has a window (242), which is set independently of the air outlet (241) and is positioned in the axial direction of the air duct (20) corresponding to the tip (291) of the negative ion emitting needle (29).

2. The wind funnel of claim 1, wherein, The window (242) is configured as an elongated slot extending circumferentially along the air duct (20), the circumferential length of the window (242) covering the radial projection range of the tips (291) of at least two negative ion emitting needles (29).

3. The duct of claim 1, wherein Also includes: Heating wire support (25), the outer wall of the heating wire support (25) and the inner wall of the air duct (20) form an annular fluid channel (22), the heating wire support (25) supports the heating wire (251) in the fluid channel (22).

4. The wind funnel of claim 3, wherein, The negative ion emitting needle (29) includes an integrally formed needle tip (291) and an extension (292), the extension (292) extending axially along the heating wire support (25) and entering the fluid channel (22) through a clearance structure.

5. The wind funnel of claim 4, wherein: The clearance structure includes: a clearance groove (258) provided at the end of the heating wire bracket (25) near the air outlet assembly (24); an axially extending receiving groove (254) of the inner cylinder (253) of the heating wire bracket (25), wherein the extension (292) is accommodated in the receiving groove (254); a connecting part (252) formed by the axially partially overlapping of the receiving groove (254) and the clearance groove (258), wherein the extension (292) is radially bent through the connecting part (252) and enters the fluid channel (22).

6. The wind funnel of claim 5, wherein: The limiting post (255) provided in the receiving groove (254) cooperates with the second limiting hole (293) of the extension (292), and / or the positioning recess (256) on the side of the receiving groove (254) cooperates with the positioning protrusion (294) on the side of the extension (292) to fix the position of the negative ion emitting needle (29).

7. The duct of claim 5, wherein The air outlet assembly (24) has a first end cap (249) having an inner flange (246) and an outer flange (247). The end of the outer flange (247) abuts against the front end of the relief groove (258) to close the relief groove (258). The inner flange (246) and the outer flange (247) extend axially inward to form an annular slot (248) between the inner flange (246) and the outer flange (247). The end of the inner cylinder (253) is inserted into the annular slot (248).

8. The wind funnel of claim 7, wherein, The first end cap (249) is an annular end cap, and the air outlet assembly (24) has a second end cap (28) located radially inside the first end cap (249), and a fluid gap (281) is formed between the second end cap (28) and the inner flange (246) of the first end cap (249).

9. The wind funnel of claim 8, wherein, The inner flange (246) has a radially inward annular protrusion (243) located downstream of the fluid gap (281). The annular protrusion (243) has a sloped section (244) facing the fluid gap (281) and an arcuate section (245) facing away from the fluid gap (281).

10. The duct of claim 3, wherein The air duct (20) also includes a plurality of flow guides (26) disposed on the heating wire support (25). The plurality of flow guides extend axially and are spaced apart in the circumferential direction. At least some of the flow guides (26) have a plurality of wiring openings (261) at the rear corresponding to the circumferential position. The air duct (20) also includes a first cable (295) electrically connected to the heating wire (251), and at least part of the wiring opening (261) is adapted to support the first cable (295).

11. The wind funnel of claim 10, wherein, The duct (20) also includes a negative ion generator (30), which is electrically connected to the plurality of negative ion emitting needles (29) via a second cable (296), and at least part of the wiring opening (261) is adapted to support the second cable (296).

12. The wind funnel of claim 1, wherein, The air duct (20) also includes a guide tube (27), which is coaxially arranged with the heating wire support (25) and located on the radial outside of the heating wire support (25). The fluid channel (22) is defined between the heating wire support (25) and the guide tube (27).

13. The duct of claim 1, wherein The ventilation duct (20) also includes: The first air inlet (23) is located at the other end of the air outlet (241) away from the air duct (20); and A fan assembly (40) is used to generate airflow toward the air outlet (241).

14. A hair dryer characterized by Includes a handle (10) and a duct (20) as described in any one of claims 1-13, wherein the handle (10) is provided with a second air inlet (11), the second air inlet (11) and the first air inlet (23) of the duct (20) form a parallel air intake channel.

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