A hair dryer

Abstract

The utility model discloses a hair dryer. The hair dryer comprises: a handle, an airflow input channel is arranged in the handle; a body, comprising a hollow cylinder with a hollow chamber, the hollow chamber forms an airflow output channel in communication with the airflow input channel; a heating element, arranged on the airflow flow path to heat the airflow; a flow guide element, configured to guide the airflow to enter the airflow output channel in a set direction; wherein the airflow output channel has an upstream end and a downstream end, the flow guide element guides the airflow to flow from the upstream end to the downstream end, to form a negative pressure at the upstream end to suck the hair into the hollow cylinder for styling. The hair dryer provided by the utility model is simple and easy to operate, easy to realize hair styling, and can avoid the risk of scalding caused by direct blowing of hot air to the scalp.

Description

Technical Field

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

[0002] Traditional hair dryers are generally designed with airflow heating and high-speed jet functions in mind. They heat air and blow it onto the hair at high speed through the nozzle to dry or style it. To achieve curls or straightening, various styling nozzles and the skillful alternation of hot and cold air by a hairstylist are required, making them less convenient to use. Furthermore, traditional hair dryers often blow hot air directly onto the hair and scalp. The nozzle should not be too close to the scalp or used for prolonged local styling, otherwise it can easily burn the scalp and ruin the experience.

[0003] Therefore, it is necessary to propose a technical solution to overcome the shortcomings of existing technologies. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model proposes a hair dryer that is easy to operate, easy to style hair, and can avoid the risk of burns that may be caused by hot air blowing directly on the scalp.

[0005] This utility model is achieved through the following technical solution: a hair dryer, the hair dryer comprising: The body includes a hollow cylinder having a hollow cavity, the hollow cavity having an upstream end and a downstream end; The power source drives the airflow within the hollow cavity; A heating element, disposed in the flow path of the airflow to heat the airflow; and, A flow guide is configured to direct airflow into the hollow chamber in a predetermined direction; The airflow guide directs the airflow from the upstream end to the downstream end, thereby creating a negative pressure at the upstream end to draw the hair into the hollow tube for styling.

[0006] As a further improved technical solution, the guide element is configured to guide the airflow to flow towards the upstream end first, and then reverse and blow it into the hollow cavity.

[0007] As a further improved technical solution, an airflow inlet is formed between the guide member and the hollow cylinder, and the direction of the airflow through the airflow inlet forms an angle of 30° to 60° with the axial direction of the hollow cylinder.

[0008] As a further improved technical solution, the guide member is provided with an arc-shaped bend near the upstream end, and the airflow inlet is formed between the free end of the arc-shaped bend and the end face of the hollow cylinder.

[0009] As a further improved technical solution, the guide member is cylindrical, the heating element is disposed inside the guide member, and the side of the guide member away from the upstream end extends beyond the heating element to cooperate with the hollow cylinder to form an annular airflow distribution cavity. The blower includes a handle, and the power source is disposed in the handle, which drives the airflow to be distributed in the airflow distribution cavity.

[0010] As a further improved technical solution, the hollow cylinder is a metal heat-conducting component, and its inner wall surface is provided with a number of heat-conducting fins.

[0011] As a further improved technical solution, the heat-conducting fins are straight plates or arc-shaped plates; and / or, the heat-conducting fins extend parallel to the central axis in the direction of the central axis of the hollow cylinder, or extend at an angle relative to the central axis, or extend spirally around the central axis.

[0012] As a further improved technical solution, the body includes a flow guide cover installed at the upstream end. The flow guide cover is annular, and its outer surface is arc-shaped from the outer edge of the annulus to the inner edge.

[0013] As a further improved technical solution, the outer surface of the flow guide cover is provided with anti-clogging texture, which is an alternating strip-shaped concave-convex structure.

[0014] As a further improved technical solution, the heating element is configured to have multiple heating levels with different heating powers, wherein in at least one heating level, the airflow temperature near the upstream end of the hollow cavity is not lower than the glass transition temperature of hair and the temperature at a distance of 25 mm from the downstream end outside the hollow cavity is not higher than 90°C.

[0015] As a further improved technical solution, in at least one heating setting, the airflow temperature near the upstream end of the hollow cavity is in the range of 150℃ to 240℃.

[0016] As a further improved technical solution, the power source is a high-speed brushless motor, wherein: The hollow cylinder has an inner diameter of 30-35mm, the high-speed brushless motor has a diameter of 27mm, and the heating element has a heating power of 1200-1400W; or, The hollow cylinder has an inner diameter of 35-45mm, the high-speed brushless motor has a diameter of 28.8mm, and the heating element has a heating power of 1600-1800W; or, The hollow cylinder has an inner diameter of 40-50mm, the high-speed brushless motor has a diameter of 32mm, and the heating element has a heating power of 1800-2000W.

[0017] As a further improved technical solution, the heating element is disposed outside the hollow cylinder and close to the upstream end.

[0018] As a further improved technical solution, the heating element includes a mounting bracket and a heating wire wound on the mounting bracket, the mounting bracket including a plurality of support plates arranged radially in the circumferential direction of the hollow cylinder.

[0019] As a further improved technical solution, the mounting bracket also includes a fixed inner ring connected to the inner end of the plurality of support pieces and a fixed outer ring sleeved on the outer end of the support pieces.

[0020] As a further improved technical solution, the hair dryer is configured to bring the hair into the hollow tube for perming or straightening by bringing the upstream end close to the scalp, and to blow-dry the hair by bringing the downstream end close to the scalp.

[0021] By adopting the above technical solution, the hair dryer provided by this utility model has the following beneficial effects: This design can be used in both directions. When the downstream end of the airflow output channel is used towards the scalp, it can realize the traditional hair drying operation. When the upstream end of the airflow output channel is used towards the scalp, it can suck in hair to realize the hair styling operation in the hollow tube. During the styling operation, the high-speed airflow flows from the upstream end to the downstream end of the airflow output channel along the set direction, forming a high-intensity and evenly distributed negative pressure zone at the upstream end. The hair is sucked into the airflow output channel for styling. During the styling process, the airflow flows from the side closer to the scalp to the side farther away from the scalp, avoiding the problem of hot air burning the scalp or causing the user's scalp to be hot and irritated, which significantly improves the convenience and comfort of the styling operation. This design supports the integrated realization of various styling such as curling and straightening, without the need to change the styling nozzle or rely on the technique of alternating hot and cold air. Through the precise control of the airflow by the guide component, a stable airflow vortex field can be formed, so that the hair naturally curls or stretches under the combined action of negative pressure, hot air and heat conduction of the hollow tube, meeting the user's needs for fast and long-lasting styling. Attached Figure Description

[0022] Figure 1 This is a perspective view of an embodiment of the hair dryer of this utility model.

[0023] Figure 2 This is another perspective view of an embodiment of the hair dryer of this utility model.

[0024] Figure 3 This is a cross-sectional view of an embodiment of the hair dryer of this utility model.

[0025] Figure 4 yes Figure 3 A magnified view of a portion of the main body.

[0026] Figure 5 This is a three-dimensional exploded view of an embodiment of the hair dryer of this utility model.

[0027] Figure 6 This is a perspective view of the hollow cylinder in one embodiment of the hair dryer of this utility model.

[0028] Figure 7 This is a perspective view of the air guide component in one embodiment of the hair dryer of this utility model.

[0029] Figure 8 This is another perspective view of the air guide component in one embodiment of the hair dryer of this utility model.

[0030] Figure 9 This is a perspective view of the heating element in one embodiment of the hair dryer of this utility model.

[0031] Figure 10 This is a perspective view of the air guide cover in one embodiment of the hair dryer of this utility model.

[0032] Figure 11 This is a perspective view of another body in one embodiment of the hair dryer of this utility model.

[0033] The attached figures are labeled as follows: 1. Handle; 11. Operation button; 12. Air inlet; 13. Electrical connector; 101. Airflow input channel; 102. Upper port; 2. Body; 201. Upstream end; 202. Downstream end; 203. Airflow inlet; 21. Outer shell; 22. Hollow cylinder; 220. Airflow output channel; 221. Heat-conducting fins; 23. Heating element; 231. Support plate; 232. Fixed outer ring; 233. Fixed inner ring; 2331. Slanted end face; 24. Air guide; 240. Airflow distribution chamber; 241. Arc-shaped bend; 25. Air guide cover; 251. Anti-clogging texture; 26. Circuit assembly; 27. Liner; 28. Outer cover. Detailed Implementation

[0034] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0036] This utility model relates to a hair dryer, and more particularly to a handheld hair care device capable of simultaneously drying and styling hair, suitable for both home and professional hairdressing settings. The specific embodiments are described in detail below with reference to the accompanying drawings.

[0037] Please see Figures 1 to 11 As shown, the hair dryer provided by this utility model includes at least a handle 1, a body 2, a heating element 23, and a guide element 24. The handle 1 has an airflow input channel 101, and the body 2 includes a hollow cylinder 22 with a hollow chamber, which forms an airflow output channel 220 communicating with the airflow input channel 101. The heating element 23 is disposed in the airflow path to heat the airflow; the guide element 24 is configured to guide the airflow in a predetermined direction into the airflow output channel 220. The hollow chamber has an upstream end 201 and a downstream end 202. The guide element 24 guides the airflow from the upstream end 201 to the downstream end 202, creating a negative pressure at the upstream end 201 to draw hair into the hollow cylinder 22 for styling.

[0038] The hair dryer provided by this utility model has the following beneficial effects: This design can be used in both directions. When the downstream end 202 is used towards the scalp, it can perform traditional hair drying operations. When the upstream end 201 is used towards the scalp, it can draw in hair for hair styling operations within the hollow tube 22. During styling operations, a high-speed airflow flows along a set direction from the upstream end 201 to the downstream end 202 of the airflow output channel 220, forming a high-intensity, evenly distributed negative pressure zone at the upstream end 201. The hair is drawn into the airflow output channel 220 for styling. Airflow moves from the side closest to the scalp to the side furthest away, avoiding scalp burns or irritation caused by excessive heat, significantly improving the convenience and comfort of styling. This design supports integrated styling of various styles, such as curling and straightening, without the need to change styling nozzles or rely on alternating hot and cold air techniques. Through precise airflow control by the guide 24, a stable airflow vortex field is formed, allowing the hair to naturally curl or stretch under the combined action of negative pressure, hot air, and heat conduction by the hollow tube 22, meeting users' needs for quick and long-lasting styling.

[0039] like Figures 1 to 3 As shown, the hair dryer mainly consists of two parts: a handle 1 and a body 2. The handle 1 is for the user to hold and has an airflow input channel 101 inside for drawing in outside air. The body 2 is connected to the upper end of the handle 1 and contains core components such as a hollow cylinder 22, a heating element 23, and a guide element 24, which are used to realize functions such as airflow heating, airflow guidance, and hair styling. The overall structure is compact, and the layout of each component is reasonable, making it easy to operate and use.

[0040] The handle 1 serves as the part held by the user and also as the component for receiving external airflow. The handle 1 contains an airflow input channel 101, one end of which communicates with the outside air, and the other end connects to the airflow output channel 220 within the main body 2, for introducing outside air into the hair dryer. Specifically, a high-speed brushless motor is installed inside the handle, which is the power source providing the airflow into the hair dryer. The handle 1 has an operation button 11 for controlling the hair dryer's on / off function, fan speed adjustment, temperature adjustment, and other functions. The operation button 11 is located near the upper end of the handle 1 for easy one-handed operation. An air inlet 12 is located near the lower end of the handle 1 to introduce outside air. In one embodiment, the air inlet 12 is formed by a cylindrical air intake mesh that is detachably installed at the lower end of the handle 1. An electrical connector 13 is also connected to the lower end of the handle 1. The electrical connector 13 connects to the circuitry inside the handle via a power cord and is used to connect to mains power to provide power to the hair dryer.

[0041] like Figure 4 and Figure 5 As shown, the main body 2 is the core part of this hair dryer, which is connected to the upper end of the handle 1 and has a horizontally extending cylindrical structure. The main body 2 mainly includes a hollow cylinder 22, a heating element 23, a flow guide 24, a flow guide cover 25, a circuit assembly 26, a liner 27, and an outer cover 28.

[0042] Please refer to the following: Figure 6 As shown, the hollow cylinder 22 has a hollow chamber inside, which forms an airflow output channel 220 connected to the airflow input channel 101 in the handle 1. The airflow output channel 220, i.e., the hollow chamber, has an upstream end 201 and a downstream end 202, and the airflow blown by the hair dryer flows from the upstream end 201 and the downstream end 202. In this embodiment, the hollow cylinder 22 is a metal heat-conducting component, such as aluminum alloy, which has good thermal conductivity. Furthermore, a plurality of heat-conducting fins 221 are provided on the inner wall surface of the hollow cylinder 22. The heat-conducting fins 221 can increase the contact area between the hollow cylinder 22 and the airflow, improve the heat exchange efficiency, and the hot airflow transfers heat to the hollow cylinder 22. The hollow cylinder 22 comes into contact with the hair drawn into it, so that the hair reaches a temperature that allows for shaping, such as curling or straightening. In this embodiment, the heat-conducting fins 221 are straight plates and extend parallel to the central axis of the hollow cylinder 22. In other embodiments, the heat-conducting fins 221 can be arc-shaped plates, and the extension direction of the heat-conducting fins 221 can be inclined relative to the central axis or spirally extended around the central axis to adapt to different airflow and heating requirements.

[0043] Please see Figure 4 , Figure 5 and Figure 9As shown, the heating element 23 is disposed in the airflow path for heating the airflow. In this embodiment, the heating element 23 is disposed outside the hollow cylinder 22 and near the upstream end 201. The heating element 23 is located on the side of the central axis of the handle 1 near the upstream end 201. This design allows the heating element 23 to be closer to the airflow inlet, so that the heat of the heating element 23 can be quickly carried away by the airflow, thereby reducing heat loss in the blower and improving heating efficiency. Of course, in other embodiments, the heating element 23 can also be disposed in other positions, as long as it can heat the airflow in the airflow path.

[0044] Please see Figure 4 and Figure 9 As shown, in this embodiment, the heating element 23 includes a mounting bracket and a heating wire wound around the mounting bracket. The mounting bracket includes a plurality of support plates 231 arranged radially in the circumferential direction of the hollow cylinder 22. The support plates 231 are used to support and fix the heating wire. The mounting bracket also includes a fixing inner ring 233 connected to the inner ends of the plurality of support plates 231 and a fixing outer ring 232 sleeved on the outer ends of the support plates 231. The fixing inner ring 233 and the fixing outer ring 232 together fix the support plates 231 together to form a stable mounting structure. In this embodiment, the fixing inner ring 233 has a beveled end face 2331 at one end near the upstream end 201. The beveled end face 2331 cooperates with the guide member 24 to deliver the heated airflow into the hollow cylinder 22 and limit its air inlet angle. The specific structure of the air inlet will be described in detail after the guide member 24 is introduced below.

[0045] In this embodiment, the heating element 23 is configured with multiple heating levels of different heating powers, allowing the user to select different levels as needed. At at least one heating level, the airflow temperature at the upstream end 201 of the airflow output channel 220 is not lower than the glass transition temperature of hair, and the temperature at a distance of 25 mm from the downstream end 202 of the airflow output channel 220 is not higher than 90°C; that is, the airflow temperature inside the hollow cavity near the upstream end 201 is not lower than the glass transition temperature of hair, and the temperature at a distance of 25 mm from the outside of the hollow cavity near the downstream end 202 is not higher than 90°C. The glass transition temperature is the critical temperature at which hair can be plastically deformed and styled. This design ensures that the hair can be heated to an appropriate temperature during styling to achieve the desired effect, while avoiding the risk of burns from overheated air. Specifically, at at least one heating level, the airflow temperature inside the hollow cavity near the upstream end 201 can be in the range of 150°C to 240°C.

[0046] Please see Figure 4 , Figure 5 , Figure 7 and Figure 8As shown, in this embodiment, the flow guide 24 is configured to guide the airflow into the airflow output channel 220 in a set direction. In this embodiment, the flow guide 24 guides the airflow to flow towards the upstream end 201 first, and then reverses direction and blows it into the hollow cavity, as shown. Figure 4 As indicated by the middle arrow. This design allows the airflow to form a vortex within the hollow cylinder 22, increasing the contact time between the airflow and the heating element 23 and the hollow cylinder 22, thereby improving heating efficiency. Furthermore, and most importantly, compared to the traditional design where the airflow flows directly downstream from the handle 1, this design creates a negative pressure zone near the upstream end 201. This allows hair near the upstream end 201 to be automatically drawn into the hollow cylinder 22 along with the external airflow, contacting the cylinder 22 to achieve styling such as perming and straightening.

[0047] In this embodiment, an airflow inlet 203 is formed between the guide member 24 and the hollow cylinder 22. The direction of the airflow through the airflow inlet 203 forms an angle of 30° to 60° with the axial direction of the hollow cylinder 22. This design allows the airflow to enter the hollow cylinder 22 at a certain angle, resulting in a more uniform airflow distribution. Preferably, the direction of the airflow through the airflow inlet 203 forms an angle of 45° with the axial direction of the hollow cylinder 22. When a 45° angle is used, the overall performance of airflow flow and heat transfer with the hair is optimal.

[0048] In this embodiment, the flow guide 24 has an arc-shaped bend 241 near the upstream end 201, and an airflow inlet 203 is formed between the free end of the arc-shaped bend 241 and the end face of the hollow cylinder 22. Specifically, the fixing inner ring 233 of the mounting bracket of the heating element 23 has a beveled end face 2331 near the upstream end 201. The beveled end face 2331 abuts against the end face of the hollow cylinder 22. The free end of the arc-shaped bend 241 of the flow guide 24 is located outside the beveled end face 2331 and has a gap with the beveled end face 2331. The inner wall surface of the free end of the arc-shaped bend 241 is approximately parallel to the beveled end face 2331, and the gap formed between them constitutes the airflow inlet 203. The heated airflow is delivered into the hollow cylinder 22 through the airflow inlet 203, and the airflow delivery angle is defined by the extension direction of the airflow inlet 203.

[0049] In this embodiment, the guide member 24 is cylindrical, and the heating element 23 is disposed inside the guide member 24. The side of the guide member 24 away from the upstream end 201 extends beyond the heating element 23 to cooperate with the hollow cylinder 22 to form an annular airflow distribution cavity 240. The upper end of the handle 1 has an upper port 102 of the airflow input channel 101, and at least a portion of the upper port 102 is directly connected to the airflow distribution cavity 240. This design allows the airflow to enter from the handle 1, first pass through the airflow distribution cavity 240 for distribution, so as to be evenly distributed in the circumferential direction near the downstream end 202 of the annular heating element 23, and then flow radially through the heating element 23 to achieve uniform heating of the airflow, thereby improving the uniformity and stability of the airflow. In this embodiment, a portion of the upper port 102 is directly connected to the heating element 23. Direct connection, in this embodiment, means that in the projection along the central axis of the handle 1, the projection of the upper port 102 at least partially coincides with the projection of the airflow distribution cavity 240 and the heating element 23.

[0050] Please see Figure 4 , Figure 5 and Figure 10 As shown, the main body 2 also includes a flow guide shroud 25 installed at the upstream end 201 of the airflow output channel 220. The flow guide shroud 25 is annular, and its outer surface is arc-shaped from the outer edge to the inner edge. The design of the flow guide shroud 25 can further guide the airflow into the hollow cylinder 22, and its arc-shaped outer surface can smoothly guide the external airflow and the user's long hair into the hollow cylinder 22. Furthermore, the outer surface of the flow guide shroud 25 is provided with anti-clogging textures 251, which can adopt an alternating strip-shaped concave-convex structure. In other embodiments, the anti-clogging textures 251 can also be other structures, such as a dotted concave-convex structure. When the user places the airflow cover 25 completely close to the scalp during use, or when the user places one end of the airflow cover 25 on a flat surface without turning off the device, the anti-clogging texture 251 design creates gaps between the airflow cover 25 and the scalp or flat surface. This prevents the upstream end 201 of the airflow output channel 220 from being completely blocked, ensuring smooth airflow and preventing overheating. During the hair styling process, the anti-clogging texture 251 allows ambient airflow to quickly pass over the hair, thus cooling it.

[0051] Please see Figure 4 and Figure 5As shown, the main body 2 includes an outer shell 21, a hollow cylinder 22, a heating element 23, and a flow guide 24, all installed inside the outer shell 21. A flow guide cover 25 is installed at the upstream end 201, and a circuit assembly 26, a cover 27, and an outer cover 28 are also installed at the downstream end 202. The circuit assembly 26 is annular or arc-shaped and has an indicator light. The light from the indicator light passes through the cover 27 and the outer cover 28 to indicate the working status of the blower, such as cold or hot air status and speed setting. The various components of the main body 2 can be assembled and fixed using structures such as clips, screws, and reinforcing ribs.

[0052] In this embodiment, a high-speed brushless motor and a fan driven by it are installed inside the handle 1 of the hair dryer to provide a stable airflow. The diameter of the high-speed brushless motor and the heating power of the heating element 23 vary depending on the inner diameter of the hollow cylinder 22. The larger the diameter of the high-speed brushless motor, the greater the airflow it provides at the same rotational speed. Specifically: when the inner diameter of the hollow cylinder 22 is 30-35mm, the diameter of the high-speed brushless motor is 27mm, and the heating power of the heating element 23 is 1200-1400W; when the inner diameter of the hollow cylinder 22 is 35-45mm, the diameter of the high-speed brushless motor is 28.8mm, and the heating power of the heating element 23 is 1600-1800W; when the inner diameter of the hollow cylinder 22 is 40-50mm, the diameter of the high-speed brushless motor is 32mm, and the heating power of the heating element 23 is 1800-2000W. Users can select the appropriate combination of hollow cylinder inner diameter, motor diameter, and heating power according to their actual needs to achieve the best performance. The motor can also have multiple speed settings, such as 90,000 rpm in speed one and 110,000 rpm in speed two.

[0053] This hair dryer has two usage modes. When the user needs to perm, straighten, or dry long hair, the user places the upstream end 201 of the airflow output channel 220 close to the scalp, turns on the hair dryer, and outside air enters the airflow input channel 101 through the air inlet 12 on the handle 1. After being distributed by the airflow distribution chamber 240, it flows through the heating element 23 and is heated to an appropriate temperature. Guided by the guide element 24, it first flows towards the upstream end 201, then reverses and blows back into the hollow chamber, and finally blows out through the airflow output channel 220. During this process, because the upstream end 201 of the airflow output channel 220 is close to the scalp, the hair is drawn into the hollow cylinder 22 for perming, straightening, styling, or drying. Due to the negative pressure formed at the upstream end 201, the hair can be smoothly drawn into the hollow cylinder 22, while the high-temperature airflow heats and styles the hair. When a user needs to blow-dry short hair (long hair is also acceptable), the user can turn the main body 2 to bring the downstream end 202 of the airflow output channel 220 closer to the scalp for blow-drying.

[0054] In addition, the hair dryer provided by this utility model further includes various body types 2, such as... Figure 11 As shown, it is another structure of body 2.

[0055] As described above, this hair dryer offers the following benefits: It not only dries hair but also provides styling functions such as perming and straightening, meeting diverse user needs. The hair dryer creates negative pressure at the upstream end 201 to draw in hair for styling, preventing direct impact of high-temperature airflow on the scalp. Through a well-designed layout of the heating element 23 and the airflow guide 24, this hair dryer achieves efficient heating, improving heating efficiency and shortening styling time. It also features safety structures such as anti-clogging grooves 251 to prevent scalp or tabletop blockage of the air intake, ensuring safe use. The hair dryer has a compact overall structure with a reasonable layout of components, making it easy for users to hold and operate. It also features multiple heating levels and adjustable fan speeds, allowing users to adjust them flexibly according to their needs.

[0056] This hair dryer, through its rational structural design and working principle, achieves multiple functions such as drying, styling, and straightening hair. It boasts advantages such as efficient heating, safety protection, and ease of operation. Suitable for both home and professional hairdressing settings, this hair dryer can meet diverse user needs and has broad market prospects and application value.

[0057] This utility model has been described through several specific embodiments. Those skilled in the art should understand that various modifications and equivalent substitutions can be made to this utility model without departing from its scope. Furthermore, various modifications can be made to this utility model for specific situations or circumstances without departing from its scope. Therefore, this utility model is not limited to the specific embodiments disclosed, but should include all embodiments falling within the scope of the claims of this utility model.

Claims

1. A hair dryer, characterized in that, The hair dryer includes: The body (2) includes a hollow cylinder (22) having a hollow chamber having an upstream end (201) and a downstream end (202). The power source drives the airflow within the hollow cavity; A heating element (23) is disposed in the flow path of the airflow to heat the airflow; and, A flow guide (24) is configured to guide airflow into the hollow chamber in a predetermined direction; The airflow guide (24) guides the airflow from the upstream end (201) to the downstream end (202) to create a negative pressure at the upstream end (201) to draw the hair into the hollow tube (22) for styling.

2. The hair dryer as described in claim 1, characterized in that, The guide (24) is configured to guide the airflow to flow towards the upstream end (201) first, and then fold back and blow into the hollow cavity.

3. The hair dryer as described in claim 2, characterized in that, An airflow inlet (203) is formed between the guide member (24) and the hollow cylinder (22), and the direction of the airflow through the airflow inlet (203) forms an angle of 30° to 60° with the axial direction of the hollow cylinder (22).

4. The hair dryer as described in claim 3, characterized in that, The guide member (24) has an arc-shaped bend (241) near the upstream end (201), and the airflow inlet (203) is formed between the free end of the arc-shaped bend (241) and the end face of the hollow cylinder (22).

5. The hair dryer as described in claim 1, characterized in that, The guide (24) is cylindrical, and the heating element (23) is disposed inside the guide (24). The side of the guide (24) away from the upstream end (201) extends beyond the heating element (23) to cooperate with the hollow cylinder (22) to form an annular airflow distribution cavity (240). The blower includes a handle (1), and the power source is disposed in the handle (1) and drives the airflow to be distributed in the airflow distribution cavity (240).

6. The hair dryer as described in claim 1, characterized in that, The hollow cylinder (22) is a metal heat-conducting component, and its inner wall surface is provided with a number of heat-conducting fins (221).

7. The hair dryer as described in claim 6, characterized in that, The heat-conducting fins (221) are straight or curved; and / or, the heat-conducting fins (221) extend parallel to the central axis in the direction of the central axis of the hollow cylinder (22), or extend at an angle relative to the central axis, or extend spirally around the central axis.

8. The hair dryer as described in claim 1, characterized in that, The body (2) includes a flow guide shell (25) installed on the upstream end (201). The flow guide shell (25) is annular, and its outer surface is arc-shaped from the outer edge of the annulus to the inner edge.

9. The hair dryer as described in claim 8, characterized in that, The outer surface of the flow guide cover (25) is provided with anti-clogging texture (251), which is an alternating strip-shaped concave-convex structure.

10. The hair dryer as claimed in claim 1, characterized in that, The heating element (23) is configured to have multiple heating levels with different heating powers, wherein in at least one heating level, the airflow temperature near the upstream end (201) inside the hollow cavity is not lower than the glass transition temperature of hair and the temperature at a distance of 25 mm from the downstream end (202) outside the hollow cavity is not higher than 90°C.

11. The hair dryer as described in claim 10, characterized in that, At at least one heating setting, the airflow temperature near the upstream end (201) of the hollow cavity is in the range of 150°C to 240°C.

12. The hair dryer as described in claim 10, characterized in that, The power source is a high-speed brushless motor, wherein: The inner diameter of the hollow cylinder (22) is 30~35mm, the diameter of the high-speed brushless motor is 27mm, and the heating power of the heating element (23) is 1200~1400W; or, The hollow cylinder (22) has an inner diameter of 35~45mm, the high-speed brushless motor has a diameter of 28.8mm, and the heating element (23) has a heating power of 1600~1800W; or, The inner diameter of the hollow cylinder (22) is 40~50mm, the motor diameter of the high-speed brushless motor is 32mm, and the heating power of the heating element (23) is 1800~2000W.

13. The hair dryer as described in claim 1, characterized in that, The heating element (23) is disposed outside the hollow cylinder (22) and close to the upstream end (201).

14. The hair dryer as described in claim 13, characterized in that, The heating element (23) includes a mounting bracket and a heating wire wound on the mounting bracket. The mounting bracket includes a plurality of support plates (231) arranged radially in the circumferential direction of the hollow cylinder (22).

15. The hair dryer as described in claim 13, characterized in that, The mounting bracket also includes a fixed inner ring (233) connected to the inner end of the plurality of support plates (231) and a fixed outer ring (232) sleeved on the outer end of the support plates (231).

16. The hair dryer as claimed in claim 1, characterized in that, The hair dryer is configured to bring the hair close to the scalp at the upstream end (201) so that the hair is drawn into the hollow tube (22) for perming or straightening, and to bring the hair close to the scalp at the downstream end (202) for blow-drying.

Images