Dual-channel switching structure and blower

Abstract

The invention relates to the technical field of blower blowing structures, in particular to a double-channel switching structure and a blower, the structure comprises an air channel assembly and a switching assembly; the air duct assembly comprises an air duct and a baffle, the air duct is divided into a first area and a second area through the baffle, and a first inner air outlet and a second inner air outlet are formed in the baffle; the switching assembly comprises an air nozzle and an adjusting device, the air nozzle is arranged in the first area and comprises a first air guide channel, and the adjusting device is connected with the air nozzle and used for adjusting the air nozzle to move between a first position and a second position; when the tuyere is located at the first position, the first inner air outlet communicates with the first air guide channel, and the second inner air outlet communicates with a second air guide channel formed between the outer wall of the tuyere and the inner wall of the air duct; when the tuyere is located at the second position, the first inner air outlet and the second inner air outlet communicate with the first air guide channel. According to the invention, the switching of two air outlet duct modes can be realized; by adopting an integrated structure, a user does not need to disassemble and assemble, and is convenient to carry and not easy to lose.

Description

Technical Field

[0001] The present invention relates to the technical field of hair dryer blowing structures, and in particular to a dual-channel switching structure and a hair dryer. Background Art

[0002] A hair dryer is a commonly used electrical appliance. In order to meet the blowing and styling needs of different user groups, the hair dryer can also be equipped with nozzles of different shapes. The nozzle can control the size and shape of the hair dryer's air outlet, making the blowing effect more precise.

[0003] During daily use, the hair dryer does not need to be equipped with a nozzle. The hair dryer blows out dispersed air to dry the hair quickly. When styling hair, install a nozzle on the hair dryer. The flat air outlet concentrates the wind force and makes it stronger, which is convenient for styling local hair.

[0004] However, in the prior art, the hair dryer and the nozzle are separate structures. When the nozzle is not in use, the nozzle needs to be stored separately and then taken out and installed when in use. This method not only requires frequent disassembly and assembly operations, but the removed nozzle also takes up extra space and is easy to lose. Summary of the Invention

[0005] In order to solve at least the above technical problems existing in the prior art, the present invention provides a dual-channel switching structure and a hair dryer.

[0006] On the one hand, the present invention provides a dual-channel switching structure, including a duct assembly and a switching assembly; the duct assembly includes a wind tube and a baffle, the wind tube is divided into a first area and a second area by the baffle, and the baffle is provided with a first inner air outlet and a second inner air outlet; the switching assembly includes a nozzle and an adjustment device, the nozzle is provided in the first area, the nozzle includes a first air guide channel, the adjustment device is connected to the nozzle, and is used to adjust the nozzle to move between a first position and a second position; when the nozzle is in the first position, the first inner air outlet is connected to the first air guide channel, and the second inner air outlet is connected to the second air guide channel formed between the outer wall of the nozzle and the inner wall of the wind tube; when the nozzle is in the second position, the first inner air outlet and the second inner air outlet are connected to the first air guide channel.

[0007] In some embodiments, a temperature regulating component is further included, and the temperature regulating component is arranged in the second area; the temperature regulating component is used to regulate the temperature of the air flow flowing into the first inner air outlet and the second inner air outlet.

[0008] In some embodiments, a plurality of the first inner air outlets and a plurality of the second inner air outlets are arranged on the baffle; the plurality of the first inner air outlets and the plurality of the second inner air outlets are arranged in a ring shape, and the centers coincide with each other, and the second inner air outlets are located between the first inner air outlets and the edge of the baffle.

[0009] In some embodiments, the first air guide channel includes a conical channel and a straight air outlet channel, and the conical channel includes an annular inlet; when the air nozzle is in the first position, the first inner air outlet is connected to the annular inlet; when the air nozzle is in the second position, the first inner air outlet and the second inner air outlet are connected to the annular inlet.

[0010] In some embodiments, a limiting structure is also included, which includes a limiting column, which is connected to the end of the nozzle; a limiting hole is provided on the baffle, and the limiting column is passed through the limiting hole. When the nozzle moves between the first position and the second position, the limiting column is located in the limiting hole and moves through it.

[0011] In some embodiments, the adjustment device includes an adjustment sleeve, which is rotatably connected to the port of the first area and is sleeved on the front end of the air nozzle; the inner wall of the adjustment sleeve includes a slide groove, and a protrusion is provided on the outer wall of the air nozzle, and the protrusion is provided in the slide groove. The adjustment sleeve rotates circumferentially, and the slide groove rotates synchronously and drives the air nozzle to move between the first position and the second position through the protrusion.

[0012] In some embodiments, the temperature control component includes a refrigeration fin ring and a first electric heating element; the connection position between the refrigeration fin ring and the baffle is located between the first inner air outlet and the second inner air outlet, and the first electric heating element is arranged in the space surrounded by the refrigeration fin ring; the interior of the refrigeration fin ring and the first inner air outlet form a first air supply channel, and the outer wall of the refrigeration fin ring, the inner wall of the inner cylinder and the second inner air outlet form a second air supply channel.

[0013] In some embodiments, the refrigeration ring is connected to a refrigeration circuit, and the refrigeration circuit includes a static contact and a moving contact; the static contact is arranged on the baffle, and the moving contact is arranged at the end of the air nozzle. When the air nozzle is in the first position, the static contact and the moving contact are conductive.

[0014] In some embodiments, the refrigeration fin ring includes a semiconductor refrigeration fin; and / or a second electric heating element is provided on the outer wall of the refrigeration fin ring and located in the second air supply channel.

[0015] Another aspect of the present invention provides a hair dryer comprising the above-mentioned dual-channel switching structure.

[0016] The present invention provides a dual-channel switching structure and a hair dryer. When in use, the nozzle is located in the air duct. Under the action of the adjustment device, the channel switching can be achieved by adjusting the position of the nozzle. That is, when the nozzle is in the first position, a dual-channel air outlet method is adopted, and the hair dryer blows out diffuse air, which can be used for quick hair drying. When the nozzle is in the second position, the airflow is concentrated and blown out from a single air duct, and the airflow is stronger and more concentrated, which can be used for local hair styling. The technical solution of the present invention can achieve switching between two air outlet duct modes, enabling the hair dryer to blow out diffuse air or concentrated air, meeting the user's needs for quick drying, hair care, and styling. The integrated structure does not require the user to disassemble and assemble, making it easy for the user to carry and not easy to lose. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily apparent by reading the following detailed description with reference to the accompanying drawings, in which several embodiments of the present invention are shown by way of example and not limitation, in which:

[0018] In the drawings, the same or corresponding reference numerals denote the same or corresponding parts.

[0019] Figure 1 A schematic diagram of the dual-channel switching structure provided by an embodiment of the present invention;

[0020] Figure 2 A cross-sectional view of a dual-channel switching structure provided by an embodiment of the present invention;

[0021] Figure 3 A schematic structural diagram of an air duct assembly in a dual-channel switching structure provided by an embodiment of the present invention;

[0022] Figure 4 A schematic structural diagram of a switching component in a dual-channel switching structure provided by an embodiment of the present invention;

[0023] Figure 5 A schematic structural diagram of an adjusting sleeve in a dual-channel switching structure provided by an embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the structure of the air nozzle in the dual-channel switching structure provided by an embodiment of the present invention;

[0025] Figure 7 A schematic diagram of airflow when the dual-channel switching structure nozzle provided by an embodiment of the present invention is in the first position;

[0026] Figure 8 A schematic diagram of airflow when the dual-channel switching structure nozzle provided by an embodiment of the present invention is in the second position;

[0027] Figure 9This is a schematic structural diagram of a hair dryer provided in an embodiment of the present invention.

[0028] In the picture:

[0029] 10: air duct assembly; 20: switching assembly; 30: temperature control assembly;

[0030] 11: Air duct; 12: Baffle; 13: First inner air outlet; 14: Second inner air outlet; 15: Second air guide channel; 16: Limiting hole; 17: Static contact; 18: Annular groove;

[0031] 21: Air nozzle; 22: Adjustment device; 221: Adjustment sleeve; 222: Slide groove; 223: Hook; 23: First air guide channel; 231: Conical channel; 232: Straight air outlet channel; 233: Annular inlet; 24: Limiting column; 25: Bump; 26: Moving contact; 27: Sealing ring;

[0032] 31: Refrigeration fin ring; 32: First electric heating element; 33: First air supply channel; 34: Second air supply channel; 35: Second electric heating element. DETAILED DESCRIPTION

[0033] In order to make the purposes, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0034] An embodiment of the present invention provides a dual-channel switching structure, including an air duct component, a switching component and a temperature control component; the switching component is arranged in the air duct component, and the switching component can be used to realize switching between two air outlet duct modes, and cooperate with the temperature control component to realize blowing out diffuse wind or concentrated wind without disassembling the air nozzle.

[0035] The following describes in detail the components of the dual-channel switching structure provided by the embodiment of the present invention, as well as the positional relationship and connection relationship of the components, with reference to the accompanying drawings.

[0036] like Figures 1 to 8As shown, in an embodiment of the present invention, the air duct assembly 10 includes an air duct 11 and a baffle 12. The air duct 11 is divided into a first area and a second area by the baffle 12. The baffle 12 is provided with a first internal air outlet 13 and a second internal air outlet 14. The air duct 11 has a certain accommodating space, and the baffle 12 is located in the middle thereof, or the position of the baffle 12 is set according to the space requirements of the first area and the second area. A switching assembly 20 is set in the space of the first area for air duct adjustment switching, and a temperature control assembly 30 is set in the space of the second area for temperature control of the airflow.

[0037] In an embodiment of the present invention, the switching component 20 includes a nozzle 21 and an adjusting device 22. The nozzle 21 is arranged in the first area. The nozzle 21 includes a first air guide channel 23. The adjusting device 22 is connected to the nozzle 21 and is used to adjust the movement of the nozzle 21 between the first position and the second position; when the nozzle 21 is in the first position, the first inner air outlet 13 is connected to the first air guide channel 23, and the second inner air outlet 14 is connected to the second air guide channel 15 formed between the outer wall of the nozzle 21 and the inner wall of the wind tube 11; when the nozzle 21 is in the second position, the first inner air outlet 13 and the second inner air outlet 14 are connected to the first air guide channel 23.

[0038] It can be seen from this that when the air nozzle 21 is in the first position, the air flow is dispersed to the first air guide channel 23 and the second air guide channel 15, the air outlet area is larger, and the flow rate of the air flow is weakened. In this structural state, the blown air can be used to quickly dry the hair; when the air nozzle 21 is in the second position, the air flow is concentrated to the first air guide channel 23 and blown out, the relative air outlet area is reduced, and the air flow is more concentrated. In this structural state, the blown air can be used for local styling of the hair.

[0039] In this embodiment of the present invention, the temperature control assembly 30 is located in the second area; the temperature control assembly 30 is used to adjust the temperature of the air flowing into the first inner air outlet 13 and the second inner air outlet 14. That is, the air first passes through the temperature control assembly 30, where the temperature of the air is adjusted, and then enters the first inner air outlet 13 and the second inner air outlet 14, thereby ensuring that the air blown out of the hair dryer has a certain temperature.

[0040] For example, multiple first inner air outlets 13 and multiple second inner air outlets 14 are set on the baffle 12; the multiple first inner air outlets 13 and the multiple second inner air outlets 14 are arranged in a ring shape, and the centers coincide with each other, and the second inner air outlets 14 are located between the first inner air outlets 13 and the edge of the baffle 12.

[0041] When the air nozzle 21 is in the first position, the air outlet volume of the first inner air outlet 13 and the second inner air outlet 14 determines the air outlet volume of the first air guiding channel 23 and the second air guiding channel 15. Therefore, in order to avoid strong air outlet from one air guiding channel and weak air outlet from the other air guiding channel, the air outlet areas of the first inner air outlet 13 and the second inner air outlet 14 can be designed to be the same or close to the same. When the air nozzle 21 is in the first position, the first air guiding channel 23 and the second air guiding channel 15 blow out almost the same amount of air.

[0042] For example, the first air guide channel 23 includes a tapered channel 231 and a linear outlet channel 232. The tapered channel 231 includes an annular inlet 233. Airflow from the first inner air outlet 13 and the second inner air outlet 14 enters the first air guide channel 23 through the annular inlet 233. The first air guide channel 23 has the effect of converging airflow. As the cross-section of the tapered channel 231 continues to decrease, the airflow is gradually converged into the linear outlet channel 232, and is ultimately blown out at a certain outlet speed. For example, the linear outlet channel 232 can be shaped like a circle, an ellipse, or a capsule.

[0043] Continue to refer Figures 1 to 8 As shown, in an embodiment of the present invention, the adjusting device 22 includes an adjusting sleeve 221, which is rotatably connected to the port of the first area and is sleeved on the front end of the air nozzle 21; for example, a plurality of hooks 223 are provided at the connecting end of the adjusting sleeve 221 and the air duct 11, and the plurality of hooks 223 are arranged at circumferential intervals, and an annular groove 18 is provided on the port of the air duct 11, and the hook 223 is engaged with the annular groove 18. When the adjusting sleeve 221 rotates, the hook 223 rotates in the annular groove 18.

[0044] The inner wall of the adjusting sleeve 221 includes a slide groove 222, and a protrusion 25 is provided on the outer wall of the air nozzle 21. The protrusion 25 is arranged in the slide groove 222. The slide groove 222 has a certain length and is arranged at an angle. For example, multiple slide grooves 222 are arranged on the inner wall of the adjusting sleeve 221, and the multiple slide grooves 222 have the same inclination angle; the adjusting sleeve 221 rotates circumferentially, and the slide groove 222 rotates synchronously, and the slide groove 222 drives the protrusion 25 to move in the slide groove 222, thereby driving the air nozzle 21 to move between the first position and the second position.

[0045] The first air guide channel 23 includes a tapered channel 231 and a straight air outlet channel 232. Accordingly, the outer structure of the air nozzle 21 includes a tapered portion and a straight portion. The tapered channel 231 is located in the tapered portion, and the straight air outlet channel 232 is located in the straight portion. When the air nozzle 21 is in the first position, the end of the tapered portion is at a certain distance from the connecting end of the adjusting sleeve 221 and the air cylinder 11, thereby forming a second air guide channel 15. As the air nozzle 21 moves to the second position, the end of the tapered portion approaches the end of the adjusting sleeve 221. At this time, the second air guide channel 15 is gradually reduced. When the air nozzle 21 reaches the second position, the end of the tapered portion abuts against the end of the adjusting sleeve 221, and the second air guide channel 15 is closed.

[0046] For example, a sealing ring 27 is provided at the end of the tapered portion. The sealing ring 27 extends radially along the air nozzle 21. When the air nozzle 21 is in the second position, the sealing ring 27 blocks the gap between the end of the tapered portion and the end of the adjustment sleeve 221. For example, the end of the chute 222 extends to the end of the adjustment sleeve 221. Therefore, a sealing protrusion can be provided at a corresponding position on the sealing ring 27 to block the end of the chute 222.

[0047] In an embodiment of the present invention, a limiting structure is further provided on the air nozzle 21, which further limits the moving direction of the air nozzle 21. That is, under the drive of the adjusting sleeve 221, the air nozzle 21 moves between the first position and the second position along the set direction.

[0048] For example, the retaining structure includes a retaining post 24 connected to the end of the nozzle 21. The baffle 12 is provided with a retaining hole, into which the retaining post 24 passes. When the nozzle 21 moves between the first and second positions, the retaining post 24 is positioned within the retaining hole and moves therethrough. The retaining post 24 is sufficiently long to prevent the nozzle 21 from separating from the retaining hole when moving between the first and second positions.

[0049] Continue to refer Figures 1 to 8 As shown, in an embodiment of the present invention, the temperature control component 30 includes a refrigeration fin ring 31 and a first electric heating element 32; the connection position between the refrigeration fin ring 31 and the baffle 12 is located between the first inner air outlet 13 and the second inner air outlet 14, and the first electric heating element 32 is arranged in the space surrounded by the refrigeration fin ring 31; the interior of the refrigeration fin ring 31 and the first inner air outlet 13 form a first air supply channel 33, and the outer wall of the refrigeration fin ring 31, the inner wall of the inner tube and the second inner air outlet 14 form a second air supply channel 34.

[0050] The airflow through the first air supply channel 33 exchanges heat with the first electric heating element 32, raising its temperature. The airflow through the second air supply channel 34 exchanges heat with the cooling fin ring 31, lowering its temperature. When the nozzle 21 is in the first position, the first air guide channel 23 blows out hot air, while the second air guide channel 15 blows out cold air, forming a flooded airflow in which the cold air surrounds the hot air. When the nozzle 21 is in the first position, the first air guide channel 23 blows out hot air.

[0051] For example, the refrigeration plate ring 31 includes a semiconductor refrigeration plate; when the first electric heating element 32 is heated, according to the characteristics of the semiconductor refrigeration plate, the side of the semiconductor refrigeration plate away from the first electric heating element 32 is the cold end, thereby cooling the airflow on this side.

[0052] For example, a second electric heating element 35 is provided on the outer wall of the refrigeration fin ring 31 within the second air supply channel 34. When the nozzle 21 is in the first position, the second electric heating element is not activated. When the nozzle 21 is in the second position, the second electric heating element is activated, and the second electric heating element heats the airflow, cooperating with the first electric heating element 32 to form hot air of a certain temperature and concentration.

[0053] For example, the cooling fin ring 31 connects to the cooling fin circuit, which includes a static contact 17 and a movable contact 26. The static contact 17 is located on the baffle 12, and the movable contact 26 is located at the end of the nozzle 21. When the nozzle 21 is in the first position, the static contact 17 and the movable contact 26 are in electrical contact. When the nozzle 21 is in the first position, the cooling fin ring 31 is activated. When the nozzle 21 is in the second position, the cooling fin ring 31 is not activated. Therefore, the static contact 17 and the movable contact 26 can be used to control the conduction or disconnection of the cooling fin circuit.

[0054] like Figure 9 As shown, an embodiment of the present invention provides a hair dryer including the above-mentioned dual-channel switching structure. The adjustment device 22 is located at the front end of the hair dryer's air outlet. By rotating the adjustment device 22, the air outlet mode of the hair dryer can be switched, that is, the air flow can be adjusted to be diffuse or concentrated, thereby meeting different usage scenarios.

[0055] The present invention provides a dual-channel switching structure and a hair dryer. When in use, the nozzle 21 is located in the air cylinder 11. Under the action of the adjustment device 22, the channel switching can be achieved by adjusting the position of the nozzle 21. That is, when the nozzle 21 is in the first position, a dual-channel air outlet method is adopted, and the hair dryer blows out diffuse air, which can be used for quick hair drying. When the nozzle 21 is in the second position, the airflow is concentrated and blown out from one air duct, and the airflow is stronger and more concentrated, which can be used for local hair styling. The technical solution of the present invention can realize the switching of two air outlet duct modes, enabling the hair dryer to blow out diffuse air or concentrated air, meeting the user's needs for quick drying, hair care and styling; the integrated structure is adopted, and the user does not need to disassemble and assemble it, which is convenient for the user to carry and not easy to lose.

[0056] In the description of this specification, reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless otherwise inconsistent.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0058] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A dual-channel switching structure, characterized in that: It includes an air duct component (10) and a switching component (20); The air duct assembly (10) comprises an air cylinder (11) and a baffle (12); the air cylinder (11) is divided into a first area and a second area by the baffle (12); and the baffle (12) is provided with a first inner air outlet (13) and a second inner air outlet (14); The switching assembly (20) comprises an air nozzle (21) and an adjusting device (22), wherein the air nozzle (21) is arranged in the first area, the air nozzle (21) comprises a first air guide channel (23), and the adjusting device (22) is connected to the air nozzle (21) and is used to adjust the air nozzle (21) to move between a first position and a second position; When the air nozzle (21) is located at the first position, the first inner air outlet (13) is connected to the first air guide channel (23), and the second inner air outlet (14) is connected to the second air guide channel (15) formed between the outer wall of the air nozzle (21) and the inner wall of the air cylinder (11); when the air nozzle (21) is located at the second position, the first inner air outlet (13) and the second inner air outlet (14) are connected to the first air guide channel (23).

2. The dual-channel switching structure according to claim 1, characterized in that: It also includes a temperature adjustment component (30), wherein the temperature adjustment component (30) is arranged in the second area; The temperature adjustment component (30) is used to adjust the temperature of the air flow flowing into the first inner air outlet (13) and the second inner air outlet (14).

3. The dual-channel switching structure according to claim 2, characterized in that: The baffle (12) is provided with a plurality of the first inner air outlets (13) and a plurality of the second inner air outlets (14); The plurality of first inner air outlets (13) and the plurality of second inner air outlets (14) are arranged in a ring shape, and their centers coincide with each other; the second inner air outlets (14) are located between the first inner air outlets (13) and the edge of the baffle (12).

4. The dual-channel switching structure according to claim 3, characterized in that: The first air guide channel (23) comprises a tapered channel (231) and a straight air outlet channel (232), and the tapered channel (231) comprises an annular inlet (233); When the air nozzle (21) is located at the first position, the first inner air outlet (13) is communicated with the annular inlet (233); when the air nozzle (21) is located at the second position, the first inner air outlet (13) and the second inner air outlet (14) are communicated with the annular inlet (233).

5. The dual-channel switching structure according to claim 1, characterized in that: It also includes a limiting structure, the limiting structure including a limiting column (24), the limiting column (24) is connected to the end of the air nozzle (21); The baffle (12) is provided with a limiting hole (16), and the limiting column (24) is inserted into the limiting hole (16). When the air nozzle (21) moves between the first position and the second position, the limiting column (24) is inserted and moved in the limiting hole (16).

6. The dual-channel switching structure according to claim 1, characterized in that: The adjusting device (22) comprises an adjusting sleeve (221), the adjusting sleeve (221) being rotatably connected to the port of the first region and being sleeved on the front end of the air nozzle (21); The inner wall of the adjusting sleeve (221) includes a sliding groove (222), and a convex point (25) is provided on the outer wall of the air nozzle (21). The convex point (25) is arranged in the sliding groove (222). When the adjusting sleeve (221) rotates circumferentially, the sliding groove (222) rotates synchronously and drives the air nozzle (21) to move between the first position and the second position through the convex point (25).

7. The dual-channel switching structure according to claim 2, characterized in that: The temperature adjustment component (30) includes a refrigeration ring (31) and a first electric heating element (32); The connection position between the refrigeration fin ring (31) and the baffle (12) is located between the first inner air outlet (13) and the second inner air outlet (14), and the first electric heating element (32) is arranged in the space surrounded by the refrigeration fin ring (31); The interior of the refrigeration fin ring (31) and the first inner air outlet (13) form a first air supply channel (33), and the outer wall of the refrigeration fin ring (31), the inner wall of the inner tube and the second inner air outlet (14) form a second air supply channel (34).

8. The dual-channel switching structure according to claim 7, characterized in that: The refrigeration plate ring (31) is connected to a refrigeration plate circuit, and the refrigeration plate circuit includes a static contact (17) and a moving contact (26); The static contact (17) is provided on the baffle (12), and the moving contact (26) is provided at the end of the air nozzle (21). When the air nozzle (21) is located at the first position, the static contact (17) and the moving contact (26) are connected.

9. The dual-channel switching structure according to claim 7, characterized in that: The refrigeration fin ring (31) comprises a semiconductor refrigeration fin; and / or A second electric heating element (35) is provided on the outer wall of the refrigeration fin ring (31) and located in the second air supply channel (34).

10. A hair dryer, characterized in that: The invention comprises a dual-channel switching structure as claimed in any one of claims 1 to 9.

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