Hair drying apparatus

Abstract

The application discloses a hair drying device. The hair drying device comprises a main body and a handle. A second fluid channel is defined in the handle. A fan assembly is arranged in the handle for generating suction air flow flowing along the second fluid channel. The main body comprises a main body shell defining a receiving cavity. A heater and an air guide are arranged in the main body shell. The heater and the air guide define at least part of a first fluid channel. The air flow flows out of the second fluid channel and enters the first fluid channel. The air guide is arranged to change the flow direction of the air flow flowing from the second fluid channel into the first fluid channel. The heater comprises a heating wire and an outer tube arranged around the heating wire. One end of the outer tube is in contact with the air guide. The heater and the air guide cooperate to form part of the first fluid channel. The heater and the air guide are connected to each other and cooperate to define part of the first fluid channel. The cooperation of the heater and the air guide can effectively reduce the air noise generated by the fluid flowing in the first fluid channel.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, and more particularly to a hair drying device. Background Technology

[0002] High-speed hair dryers and other hair drying devices are becoming increasingly popular due to their ability to generate greater airflow and dry hair more quickly. The motors in high-speed hair dryers are generally smaller than traditional motors and are housed in the handle. The airflow generated by the motor enters the handle from the bottom, then flows into the main body, and finally exits through the air outlet.

[0003] However, because high-speed hair dryers generate a large air volume, the noise generated by the hair dryer is also relatively loud. When users use hair dryers to dry their hair, the hair dryer is close to their ears, and the loud noise can cause discomfort. Therefore, effectively reducing wind noise has become a key focus of research and development for various manufacturers. Summary of the Invention

[0004] To address the shortcomings of the aforementioned technologies, this invention provides a hair drying device that can effectively reduce the noise generated by the hair drying device.

[0005] On one hand, the present invention provides a hair drying device, including

[0006] The handle has a second fluid channel defined therein;

[0007] A fan assembly, disposed within the handle, is used to generate a suction airflow that flows along the second fluid channel;

[0008] The main body includes a main body shell defining a receiving cavity, a heater and an air guide are disposed within the main body shell, and at least a portion of a first fluid channel is defined between the heater and the air guide; airflow flows out from a second fluid channel and then enters the first fluid channel, and the air guide is used to change the flow direction of the airflow flowing from the second fluid channel into the first fluid channel;

[0009] The heater includes a heating wire and an outer tube disposed on the outer periphery of the heating wire. One end of the outer tube is in contact with the air guide, and the two cooperate to form part of the first fluid channel.

[0010] Optionally, the outer tube and the air guide jointly define the air inlet of the first fluid channel.

[0011] Optionally, the air guide includes a tubular connecting portion and an air guide plate disposed on the outer periphery of the connecting portion.

[0012] Optionally, the heater further includes a tubular inner tube, with the heating wire disposed between the inner tube and the outer tube.

[0013] Optionally, the diameter of the inner tube is larger than the diameter of the connecting portion; or

[0014] The distance between the inner tube and the outer tube gradually decreases along the direction of gas flow.

[0015] Optionally, the air guide plate is provided with a connecting wall that is substantially parallel to the outer tube body, and after the outer tube body comes into contact with the air guide plate, part of the outer tube body overlaps with the connecting wall.

[0016] Optionally, the air guide is provided with a plasma emitter inside.

[0017] Optionally, it also includes a support member for supporting the inner tube body, wherein one end of the support member away from the air outlet of the hair drying device is connected to the connecting portion.

[0018] Optionally, the area of ​​the air outlet of the second fluid channel is smaller than the area of ​​the air inlet of the first fluid channel, and the projection of the air outlet of the second fluid channel along the handle direction falls completely into the air inlet of the first fluid channel.

[0019] Optionally, it further includes an air outlet component disposed at the end of the heater away from the air guide, the air outlet component, the heater, and the air guide together defining the first fluid channel.

[0020] This invention provides a hair drying device. The hair drying device includes a main body and a handle. A second fluid channel is defined within the handle. A fan assembly is disposed within the handle for generating a suction airflow flowing along the second fluid channel. The main body includes a main body shell defining a receiving cavity. A heater and an air guide are disposed within the main body shell, and at least a portion of a first fluid channel is defined between the heater and the air guide. Airflow exits from the second fluid channel and enters the first fluid channel. The air guide is used to change the flow direction of the airflow from the second fluid channel into the first fluid channel. The heater includes a heating wire and an outer tube disposed around the periphery of the heating wire. One end of the outer tube contacts the air guide, and the two cooperate to form a portion of the first fluid channel. Connecting the heater and the air guide, which together define a portion of the first fluid channel, can effectively reduce the wind noise generated by the fluid flowing within the first fluid channel. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a hair drying device according to an embodiment of the present invention;

[0022] Figure 2This is a schematic diagram of the hair drying device at one angle in one embodiment;

[0023] Figure 3 This is a schematic diagram of the hair drying device from another angle in one embodiment;

[0024] Figure 4 This is a cross-sectional view of a hair drying device in one embodiment;

[0025] Figure 5 This is a schematic diagram of the internal structure of a hair drying device in one embodiment;

[0026] Figure 6 This is a schematic diagram of the internal structure of the main body in one embodiment;

[0027] Figure 7 This is a schematic diagram of the internal structure of the handle in one embodiment;

[0028] Figure 8 For along Figure 2 A cross-sectional view along the AA direction;

[0029] Figure 9 for Figure 8 Enlarged view of the structure of the Z region;

[0030] Figure 10 For along Figure 3 Cross-sectional view along the BB direction;

[0031] Figure 11 This is a schematic diagram of the air guide plate in one embodiment;

[0032] Figure 12 This is a diagram showing the relative positions of the air guide plate, heater, and air outlet components.

[0033] Figure 13 This is a diagram showing the relative positions of the air guide plate, support components, and air outlet components.

[0034] Figure 14 This is a schematic diagram of the overall structure of a hair drying device according to an embodiment of the present invention;

[0035] Figure 15 This is a disassembly diagram of the overall structure of a hair drying device according to an embodiment of the present invention. Figure 1 ;

[0036] Figure 16 This is a disassembly diagram of the inner shell and main structure of the handle of a hair drying device according to an embodiment of the present invention;

[0037] Figure 17 This is a cross-sectional schematic diagram of the connection structure between the inner shell of the handle and the main body of a hair drying device according to an embodiment of the present invention;

[0038] Figure 18 for Figure 17 Enlarged schematic diagram of section B of the structure;

[0039] Figure 19 This is a schematic diagram illustrating the connection structure between the first housing and the air inlet.

[0040] Figure 20 This is a structural schematic diagram used to illustrate a certain state during the installation of the first housing;

[0041] Figure 21 This is a partial structural schematic diagram of the first housing of a hair drying device according to an embodiment of the present invention;

[0042] Figure 22 This is a schematic diagram of the air inlet end of a hair drying device according to an embodiment of the present invention;

[0043] Figure 23 This is a partial structural schematic diagram of the second housing of a hair drying device according to an embodiment of the present invention;

[0044] Figure 24 This is a cross-sectional schematic diagram of the overall structure of a hair drying device according to an embodiment of the present invention;

[0045] Figure 25 This is a schematic diagram of the internal structure of the receiving cavity according to an embodiment of the present invention;

[0046] Figure 26 This is a schematic diagram illustrating the positional relationship between the PCB board and the central tube according to an embodiment of the present invention;

[0047] Figure 27 for Figure 26 Cross-sectional view of the middle structure;

[0048] Figure 28 for Figure 26 Explosion diagram of the middle structure Figure 1 ;

[0049] Figure 29 for Figure 26 Explosion diagram of the middle structure Figure 2 . Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0051] It should be noted that if the embodiments of the present invention involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0052] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0054] refer to Figure 1-13 Special reference Figure 1-4 The hair drying device 100 (hair dryer) includes a main body 1 and a handle 2, both of which are essentially cylindrical. The main body 1 includes a housing defining a receiving cavity, and also includes a first fluid channel 31, the air outlet of which is the air outlet 172 of the hair drying device 100. The handle 2 defines a second fluid channel 32, the air inlet of which is the air inlet 171 of the hair drying device 100, and the air outlet 322 of the second fluid channel is in fluid communication with the air inlet 311 of the first fluid channel. A blower assembly 25 is disposed within the handle 2 and is used to generate a suction airflow along the second fluid channel 32.

[0055] refer to Figure 1 The axis of the main body 1 and the axis of the handle 2 are basically perpendicular to each other, and when the main body 1 is placed horizontally ( Figure 1(As shown in the placement position), the horizontal distance between the outermost point of the handle housing and the outermost point of the main body housing is the front distance L2, and the horizontal distance between the outermost point of the handle housing and the outermost point of the main body housing is the rear distance L3. The ratio of the front distance L2 to the rear distance L3 is between 1.45 and 1.6. Using this structural arrangement, the proportion of the main body 1 of the hair drying device 100 relative to the handle 2 is more reasonable, making it easier to use and effectively reducing fatigue during prolonged use.

[0056] Furthermore, to make the hair drying device 100 more aesthetically pleasing overall, the ratio of the length L4 of the main body 1 to the outer diameter L1 of the handle 2 is between 2.32 and 2.42. In a specific embodiment, L2 is 32.77 mm, L3 is 20.27 mm, the outer diameter of the handle 2 is 20.8 mm, and the length of the main body 1 is 73.84 mm.

[0057] refer to Figure 4 Since the main body 1 and the handle 2 are substantially perpendicular to each other, that is, the first fluid channel 31 and the second fluid channel 32 are perpendicular to each other, in order to ensure that the airflow can be redirected with relatively small loss, the main body 1 also includes an air guide 14 disposed within the main body housing. The air guide 14 is configured to change the flow direction of the airflow from the second fluid channel 32 into the first fluid channel 31. The air guide 14 includes, but is not limited to, an air guide plate 144, which is used to change the flow direction of the airflow from the second fluid channel 32 into the first fluid channel 31. The air guide plate 144 includes a proximal end 144 near the handle 2 and a distal end 147 away from the handle 2. Along the axial direction of the main body 1, the vertical distance from the distal end 147 to the plane of the air outlet 172 is a first distance M1, and the vertical distance from the proximal end 144 to the plane of the air outlet 172 is a second distance M2. The vertical distance from the end of the air outlet 322 of the second fluid channel away from the air outlet 172 to the plane of the air outlet 172 is a third distance M3. The third distance M3 is greater than the first distance M1 and less than the second distance M2. The front and rear ends of the air guide plate 144 are respectively positioned on both sides of the edge of the air outlet 322 of the second fluid channel. This ensures that the airflow from the air outlet directly hits the air guide plate 144, effectively redirecting the airflow and reducing noise generated by the airflow.

[0058] Furthermore, the vertical distance from the end of the air outlet 322 of the second fluid channel near the air outlet 172 to the plane where the air outlet 172 is located is a fourth distance M4, which is less than the first distance M1. This ensures that the high-speed airflow at the air outlet 172 has sufficient area to pass through, effectively reducing noise.

[0059] refer to Figure 5-13That is, the area of ​​the air outlet 322 of the second fluid channel is smaller than the area of ​​the air inlet 311 of the first fluid channel, and the projection of the air outlet 322 of the second fluid channel along the direction of the handle 2 completely falls into the air inlet 311 of the first fluid channel. (Reference) Figure 11 The air guide 14 includes a tubular connecting portion 141 and an air guide plate 144 disposed on the outer periphery of the connecting portion 141. There is a smooth transition between the distal end 147 and the proximal end 144 of the air guide plate 144. This effectively guides the airflow. (Reference) Figure 4 and Figure 11 The air guide plate 144 is configured to bulge towards the air outlet 172. This forward-protruding shape allows the airflow to more quickly change from a vertical to a horizontal direction. If it were a backward-protruding shape, a very large curvature would be required to achieve a smooth airflow change. To make the internal structure of the hair drying equipment 100 more compact, it is clear that this shape of air guide plate 144 is not suitable for the internal structure of the hair drying equipment 100.

[0060] Continue to refer to Figure 4-13 Hair drying equipment 100 generally has a hot air function; therefore, a heater 15 needs to be installed inside the hair drying equipment 100 to heat the airflow. The heater 15 is installed inside the main housing, and the heater 15 and the air guide 14 together define the air inlet 311 of the first fluid channel. In one embodiment, the heater 15 includes a heating wire 155 and an outer tube 153 disposed around the periphery of the heating wire 155; the heating wire 155 may not have an inner tube 152. One end of the outer tube 153 contacts the air guide 14, and the two cooperate to form a portion of the first fluid channel 31. To ensure that the airflow can smoothly enter the first fluid channel 31 and flow within it, the air outlet 322 of the second fluid channel is directly opposite the air inlet 311 of the first fluid channel, and the vertical projection of the air outlet 322 of the second fluid channel falls entirely within the area of ​​the air inlet 311 of the first fluid channel. The air guide plate 144 is provided with a connecting wall 146 that is basically parallel to the outer tube body 153. After the outer tube body 153 comes into contact with the air guide plate 144, part of the outer tube body 153 overlaps with the connecting wall 146. In this way, the airflow will flow along the outer tube body 153 to the air outlet of the hair drying equipment 100, which improves the airflow and reduces the noise generated by the airflow inside the hair drying equipment 100.

[0061] In another embodiment, the heater 15 includes an inner tube 152, a heating wire 155 disposed around the outer periphery of the inner tube 152, and an outer tube 153 disposed around the outer periphery of the heating wire 155. The inner tube 152, the outer tube 153, and the air guide 14 together define a portion of the first fluid channel 31. The heater 15 also includes a tubular support 151, with the inner tube 152 disposed around the outer periphery of the support 151. This effectively ensures the support of the heating wire 155. One end of the support 151 is connected to the air guide, and the other end of the support 151 is connected to the air outlet component. The air guide is connected to the support 151 by bolts or clips. The air guide, the heater, and the air outlet component constitute the first fluid channel.

[0062] refer to Figure 11-13 and Figure 4 The air guide 14 includes a tubular connecting portion 141 and an air guide plate 144 disposed on the outer periphery of the connecting portion 141. The other end of the connecting portion 141 is connected to the inner tube body 152. The tubular connecting portion 141 is directly or indirectly connected to the inner tube body 152 to form part of the inner wall of the first fluid channel 31. The air guide plate 144 is provided with a connecting wall 146 that is substantially parallel to the outer tube body 153. After the outer tube body 153 contacts the air guide plate 144, part of the outer tube body 153 overlaps with the connecting wall 146. The outer tube body 153 forms part of the outer wall of the first fluid channel 31. Extending the outer tube body 153 to the air guide plate 144 can effectively prevent the airflow from the second fluid channel 32 from blowing towards the main body shell, causing kinetic energy loss. At the same time, the overlap between the outer tube body 153 and the air guide plate 144 can also reduce wind noise.

[0063] In one embodiment, the outer diameter of the inner tube 152 is larger than the outer diameter of the connecting portion 141. This reduces the area of ​​the first fluid channel 31 along the airflow direction, effectively reducing noise. If the cross-sectional area of ​​the fluid channel suddenly decreases at the outlet 172 along the airflow direction, significant noise will be generated at that point. In another embodiment, the distance between the inner tube 152 and the outer tube 153 gradually decreases along the gas flow direction; this arrangement also aims to reduce wind noise generated when gas flows within the first fluid channel 31.

[0064] The air guide plate 144 is provided with a connecting wall 146 that is basically parallel to the outer tube 153. After the outer tube 153 comes into contact with the air guide plate 144, part of the outer tube 153 overlaps with the connecting wall 146. In this way, most of the airflow can be ensured to flow within the first fluid channel 31, effectively reducing the amount of gas flowing out of the first fluid channel 31 between the air guide plate 144 and the outer tube 153, and reducing noise.

[0065] The main body 1 is also equipped with a plasma emitter 12, and part of the plasma generator is located in the connecting part 141. The plasma emitter 12 includes a positive ion release end and a negative ion release end, which are located inside the outer tube 153.

[0066] refer to Figure 12-13 The hair drying equipment also includes an air outlet component 16, which is located at the end of the heater 15 away from the air guide 14. The air outlet component 16, the heater 15 and the air guide 14 together define a first fluid passage 31.

[0067] An opening 149 is provided on the air guide plate 144, which is located near the air inlet 311 of the first fluid channel. Some of the airflow entering the first fluid channel 31 from the second fluid channel 32 can enter the space behind the air guide 14 through the opening 149. The space behind the air guide 14 can be used to place the PCB board 13, and some of the airflow entering the space can dissipate heat from the PCB board 13.

[0068] refer to Figure 10 The air guide 14 is equipped with a plasma emitter 12.

[0069] like Figures 14-16 As shown, the mounting structure between the handle and the main body of the hair drying equipment is described in detail below. An air inlet 171 is provided at the end of the handle 2 furthest from the main body 1. A fluid channel for transferring fluid between the air inlet 171 and the air outlet 172 is defined in both the handle 2 and the main body 1. The main body 1 includes a main body shell 11, and an air inlet end 112 is also provided on the side wall of the main body shell 11. The handle 2 includes a handle housing, and the air inlet end 112 protrudes from the side wall of the main body shell 11 towards the handle 2, thereby forming a connection portion for connection with the handle housing. The handle housing is fixedly connected to the air inlet end 112, thereby achieving connection with the main body 1 and enabling communication between the fluid channel in the handle 2 and the fluid channel in the main body 1.

[0070] In this embodiment, the handle housing is the inner handle housing 22, and the handle 2 also includes a outer handle housing 21 sleeved on the outside of the inner handle housing 22, wherein the inner handle housing 22 is connected to the air inlet end 112. The outer handle housing 21 is fixed to the inner handle housing 22, specifically by bolt connection, snap-fit, adhesive bonding or welding. The air inlet end 112 and the inner handle housing 22 are generally cylindrical, but can also be other non-cylindrical shapes. The air inlet end 112 includes a first connecting part 33 and a second connecting part 34, which together form the air inlet end 112. The air inlet end 112 can be integrally formed with the main body housing 11, and the first connecting part 33 and the second connecting part 34 are just two parts of the housing of the air inlet end 112. The inner handle housing 22 includes a first housing 221 and a second housing 222, which are detachably connected and together form the inner handle housing 22 with a fluid channel.

[0071] like Figure 15 and Figures 17-21 As shown, the first housing 221 is connected to the first connecting part 33, and the second housing 222 is connected to the second connecting part 34. The end 37 of the first housing 221 extends into the air inlet 112 and engages with the inner wall of the first connecting part 33. Specifically, a first locking block 371 is provided on the outer wall of the end 37 of the first housing 221, and a second locking block 35 is provided on the inner wall of the first connecting part 33. Through the engagement of the first locking block 371 and the second locking block 35, the first housing 221 is axially engaged with the first connecting part 33. The side of the end 37 of the first housing 221 closest to the second housing 222 abuts against the air inlet 112 (e.g., ...). Figure 19 The middle side wall 372 abuts against the air inlet end 112. During installation, the end 37 of the first housing 221 is pushed into the air inlet end 112 from below. Due to the obstruction of the second locking block 35, directly pushing along the axial direction of the handle 2 cannot push the first locking block 371 above the second locking block 35. At this time, the assembler only needs to rotate the first housing 221 towards the center of the handle 2 (refer to...). Figure 20 This causes the first locking block 371 and the second locking block 35 to be misaligned axially in the handle 2. Then, the first housing 221 is pushed further so that the first locking block 371 reaches above the second locking block 35. Finally, the first housing 221 is rotated to reset. At this point, the first housing 221 is locked onto the first connecting part 33, meaning the first housing 221 is connected to the air inlet end 112. Because the first locking block 371 and the second locking block 35 are locked axially in the handle 2, and the side wall 372 abuts against the air inlet end 112, the first housing 221 is locked into the air inlet end 112 and will not fall off. Only when the first housing 221 is rotated again, causing the first locking block 371 and the second locking block 35 to be misaligned, and then the first housing 221 is pulled down, can the first housing 221 be removed from the air inlet end 112.

[0072] like Figure 15 , Figure 22 and Figure 23 As shown, the second housing 222 is engaged with the second connecting part 34, and the second housing 222 cannot rotate toward the center of the handle 2 when it is connected to the second connecting part 34. Thus, after the second housing 222 is connected to the first housing 221, under the constraint of the second housing 222, the first housing 221 and the handle inner housing 22 as a whole cannot rotate relative to the air inlet end 112, so the first housing 221 cannot be disassembled from the first connecting part 33. Therefore, the handle inner housing 22 as a whole can be connected to the air inlet end 112.

[0073] By using a first housing 221 for installation and disassembly via a rotational snap-fit, and a second housing 222 to prevent the first housing 221 from rotating, the inner housing 22 of the handle can be fixed to the air inlet 112, thus connecting the inner housing 22 of the handle to the main body 1 of the fan. Furthermore, due to the rotational snap-fit ​​method, the assembly process does not apply significant assembly force to the handle 2 housing and the air inlet 112 housing, and there is no need to drill screw holes, thus causing minimal damage to the housing strength. Simultaneously, the rotational snap-fit ​​method requires less wall thickness for the handle 2 housing and the air inlet 112, allowing for assembly even with thicker walls. Therefore, the connection between the handle 2 and the main body 1 is more secure, and the entire structure does not use bolts.

[0074] like Figures 18-21 As shown, since the end 37 abuts against the air inlet 112 near the side wall 372 of the second housing 222, the first housing 221 rotates around a point on the side wall 372 as a pivot point during rotation. This pivot point is denoted as point A, which is generally the top point of the side wall 372, as shown in the attached figure in this embodiment. Preferably, the first locking block 371 is located diagonally above point A along the axis of the handle 2, meaning the line connecting the first locking block 371 and point A forms an acute angle α with the horizontal plane. This arrangement reduces the rotation angle of the first housing 221 during installation, allowing the first housing 221 to rotate only a small angle to offset the first locking block 371 and the second locking block 35 axially in the handle 2, thus facilitating quick installation. Furthermore, to facilitate installation, the side wall of the end 37 between the connection point A and the first locking block 371 can be made arc-shaped, or at least arc-shaped at point A, which facilitates smooth and rapid rotation of the first housing 221.

[0075] like Figure 15As shown, in this embodiment, the second housing 222 is connected to the outer wall of the second connecting part 34, and the first housing 221 and the second housing 222 are respectively connected to the inner and outer sides of the air inlet pipe, thereby ensuring the connection strength and reducing the impact of the connection between the handle 2 and the main body 1 on the size of the fluid channel. Alternatively, the inner diameter of the first connecting part 33 can be set to be larger than the inner diameter of the second connecting part 34, thereby further expanding the fluid channel.

[0076] like Figure 22 and Figure 23 As shown, specifically, the inner wall of the second housing 222 is provided with a plurality of second snap-fit ​​blocks 5, and the outer wall of the second connecting part 34 is provided with a plurality of second snap-fit ​​grooves 36 that engage with the second snap-fit ​​blocks 5. Preferably, the second snap-fit ​​blocks 5 and the second snap-fit ​​grooves 36 extend in a direction perpendicular to the axis of the handle 2, which can effectively prevent the second housing 222 from rotating relative to the second connecting part 34, thereby preventing the first housing 221 from rotating. The first housing 221 and the second housing 222 can also be assembled into the inner housing 22 of the handle by snap-fit. Of course, in order to improve the sealing performance, the connection between the first housing 221 and the second housing 222 can also be fastened with bolts.

[0077] The implementation principle of this embodiment is as follows: During installation, firstly, the first housing 221 is inserted into the air inlet 112 from below, near the first connecting part 33. The first housing 221 is rotated towards the center of the handle 2, causing the first locking block 371 on the outer wall of the first housing 221 to misalign with the second locking block 35 on the inner wall of the air inlet 112. Then, the first housing 221 is pushed while simultaneously rotating and resetting, so that the first locking block 371 engages with the second locking block 35. At this point, the first housing 221 is connected to the air inlet 112. Next, the end of the second housing 222 with the second locking block 5 is attached to the outer wall of the second connecting part 34, so that the second locking block 5 engages in the second locking groove 36. Finally, the first housing 221 and the second housing 222 are interlocked or bolted together, thus connecting the entire inner handle housing 22 to the fan body 1. Finally, the outer handle housing 21 is connected to the inner handle housing 22.

[0078] To facilitate installation, a positioning block 51 can be provided on the air inlet 112. The positioning block 51 is located between the second housing 222 and the first housing 221. The first housing 221 and the second housing 222 abut against the positioning block 51, so that the first housing 221 and the second housing 222 can be installed independently.

[0079] refer to Figure 14 ,and Figure 24-29 This section provides a detailed introduction to the specific structure and installation method of the plasma generator. For example... Figures 24-26As shown, the heater 15 includes a support member 151, fins (not shown) arranged circumferentially on the outer wall of the support member 151, and an outer tube 153 sleeved around the outer periphery of the fins, wherein heating wires 155 are provided on the fins. A fluid channel is formed between the support member 151 and the outer tube 153, and the heating wires 155 are located in the fluid channel, so that the airflow can be heated after passing through the heating wires 155. The air guide member 14 includes an air guide plate 144 and a connecting part 141, wherein the connecting part 141 is fixedly connected to the support member 151, thereby fixing the air guide member 14 to the heater 15. The connecting part 141 and the support member 151 are connected to form a central tube 173 that is generally located on the central axis of the main body shell 11. The air guide plate 144 is connected to the end of the connecting part 141 away from the support member 151, that is, the air guide plate 144 is located at the end of the central tube 173 away from the air outlet 172, so that the airflow entering from the handle 2 can be guided towards the central tube 173, and the airflow flows around the outer wall of the central tube 173 to the air outlet 172.

[0080] like Figures 25-27 As shown, a plasma generator 12 is installed inside the central tube 173. Two mounting holes 126 are also provided on the outer wall of the central tube 173. The positive ion release end 121 and the negative ion release end 122 of the plasma generator 12 extend from the two mounting holes 126 to the outside of the central tube 173 to release positive and negative ions into the fluid. A PCB board 13 is also provided in the receiving cavity 111 on the side of the air guide plate 144 away from the connecting part 141. The PCB board 13 and the plasma generator 12 are electrically connected by wires. Specifically, for ease of installation, a cavity 143 is provided in the connecting part 141, and the cavity 143 extends through the connecting part 141 along the axial direction of the main body shell 11. Figure 28 and Figure 29 As shown in the diagram, the cavity 143 extends to the air guide plate 144, allowing the cavity 143 to connect the central tube 173 and the side of the air guide plate 144 near the PCB board 13. This arrangement allows the PCB board 13 to face the central tube 173, thus facing the plasma generator 12, facilitating the cabling connection between the PCB board 13 and the plasma generator 12.

[0081] like Figures 27-29As shown, the air guide plate 144 and the connecting part 141 can be integrally formed. The plasma generator 12 is located inside the central tube 173, specifically in the cavity 143 of the connecting part 141 or in the support member 151. It can be mounted on the connecting part 141 or on the support member 151. In this embodiment, it is preferable to mount the plasma generator 12 on the support member 151, and the plasma generator 12 is also located in the cavity 143 of the connecting part 141. Since the function of the support member 151 is to support the heater 15, and the air guide 14 only serves to guide the airflow, the strength of the support member 151 is greater than that of the connecting part 141 in the design. Therefore, mounting the plasma generator 12 on the support member 151 can be more stable. In addition, the plasma generator 12 is located in the cavity 143. Since the cavity 143 is close to the PCB board 13, it is convenient to install the plasma generator 12.

[0082] Specifically, a connecting plate 158 is provided inside the support member 151. Along the axial direction of the main body shell 11, the connecting plate 158 divides the internal space of the support member 151 into a front cavity 156 and a rear cavity 157. The front cavity 156 is close to the connecting part 141, and the rear cavity 157 is close to the air outlet 172. The connecting part 141 extends into the front cavity 156 and is fixed to the connecting plate 158, so that the front cavity 156 and the cavity 143 partially overlap. The plasma generator 12 is installed on the connecting plate 158 and located in the front cavity 156, so that the plasma generator 12 can extend into the cavity 143, thus being close to the PCB board 13 and facilitating connection with the PCB board 13.

[0083] like Figure 28 and Figure 29 As shown, the connecting plate 158 is provided with a mounting groove 123 for mounting the plasma generator 12. The mounting groove 123 extends into the front cavity 156, and the connecting part 141 is provided with a clearance opening to avoid the mounting groove 123. The mounting groove 123 extends into the cavity 143. The mounting groove 123 is also provided with an elastic arm 124, which is an elastic buckle. The plasma generator 12 is fixed in place by the elastic buckle, making installation convenient and quick.

[0084] like Figure 25 , Figure 26 and Figure 27As shown, a mounting hole 126 is provided through the side wall of the overlapping portion of the connecting part 141 and the support member 151. A slot 125 is also provided on the outer wall of the support member 151, extending along the axial direction of the main body shell 11 to the end of the support member 151 near the air outlet 172. The slot 125 is connected to the mounting hole 126. The positive ion release end 121 and the negative ion release end 122 extend along the slot 125 to the end of the support member 151 near the air outlet 172. This allows the released positive and negative ions to quickly reach the air outlet 172 and be discharged onto the hair from the air outlet 172, thus reducing the loss of positive and negative ions in the main body shell 11. Furthermore, the mounting holes 126 and the slots 125 are spaced apart along the outer periphery of the support member 151 on its outer wall, so that the positive ion releasing end 121 and the negative ion releasing end 122 are spaced apart in the circumferential direction of the support member 151, thereby further reducing the loss between positive and negative ions and improving the care effect. In other embodiments, the slots 125 may also extend from the connecting portion 141 toward the end of the support member 151 near the air outlet 172 on both the connecting portion 141 and the outer wall of the support member 151, depending on the position of the mounting holes 126.

[0085] like Figure 25 As shown, the heater 15 also includes an inner tube 152 sleeved on the outer wall of the support 151. The inner wall of the inner tube 152 abuts against the top of the slot 125, thereby sealing the two slots 125 into two relatively independent spaces. The positive ion release end 121 and the negative ion release end 122 extend along the two relatively independent spaces to the end of the support 151 near the air outlet 172, which can improve the stability of the installation and ensure that the positive ion release end 121 and the negative ion release end 122 are always separated and will not shift due to bumps, drops, or other reasons in the usage environment. A fluid channel is formed between the inner tube 152 and the outer tube 153. The heating wire 155 is located in the fluid channel, and the positive ion release end 121 and the negative ion release end 122 extend into the fluid channel, thereby heating the airflow and releasing negative ions.

[0086] The implementation principle of this embodiment is as follows: the connecting part 141 of the air guide 14 and the support member 151 of the heater 15 are connected to form a central tube 173, and the plasma generator 12 is installed in the central tube 173; the PCB board 13 is set on the side of the air guide plate 144 away from the central tube 173, and a cavity 143 is provided to connect one side of the PCB board 13 and the central tube 173, so that the PCB board 13 can face the plasma generator 12, thereby facilitating installation and wiring. In addition, by extending the positive ion release end 121 and the negative ion release end 122 of the plasma generator 12 to the air outlet 172, the loss between positive and negative ions can be reduced, thereby improving the nursing effect. By providing a connecting plate 158 and a slot 125 on the support member 151 to install the plasma generator 12, the installation stability of the plasma generator 12 can be improved.

[0087] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A hair drying device, characterized in that, include: The handle has a second fluid channel defined therein; A fan assembly, disposed within the handle, is used to generate a suction airflow that flows along the second fluid channel; The main body includes a main body shell defining a receiving cavity, a heater and an air guide are disposed within the main body shell, and at least a portion of a first fluid passage is defined between the heater and the air guide; After the airflow exits from the second fluid channel, it enters the first fluid channel. The air guide is used to change the flow direction of the airflow from the second fluid channel into the first fluid channel. The heater includes a heating wire and an outer tube disposed on the outer periphery of the heating wire. One end of the outer tube is in contact with the air guide, and the two cooperate to form part of the first fluid channel. The air guide component includes a tubular connecting part and an air guide plate disposed on the outer periphery of the connecting part; The heater also includes a tubular inner tube, and the heating wire is disposed between the inner tube and the outer tube; The air guide plate is provided with a connecting wall that is basically parallel to the outer tube. After the outer tube comes into contact with the air guide plate, part of the outer tube overlaps with the connecting wall and is located on the inner side of the connecting wall. It also includes a support member for supporting the inner tube body, and the end of the support member away from the air outlet of the hair drying device is connected to the connecting part.

2. The hair drying equipment as described in claim 1, characterized in that, The outer tube and the air guide together define the air inlet of the first fluid channel.

3. The hair drying equipment as described in claim 1, characterized in that, The diameter of the inner tube is larger than the diameter of the connecting part; or The distance between the inner tube and the outer tube gradually decreases along the direction of gas flow.

4. The hair drying equipment as described in claim 3, characterized in that, The air guide component is equipped with a plasma emitter.

5. The hair drying equipment as described in claim 1, characterized in that, The area of ​​the air outlet of the second fluid channel is smaller than the area of ​​the air inlet of the first fluid channel, and the projection of the air outlet of the second fluid channel along the handle direction falls completely into the air inlet of the first fluid channel.

6. The hair drying equipment as described in claim 1, characterized in that, It also includes an air outlet component, which is disposed at the end of the heater away from the air guide, and the air outlet component, the heater, and the air guide together define the first fluid channel.

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