Hair drier with blowback function
By introducing a reverse airflow function into the hair dryer, the problem of clogged air inlets is solved, enabling self-cleaning, maintaining unobstructed airflow, extending service life, and improving user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG SUPAI DRIVE TECHNOLOGY CO LTD
- Filing Date
- 2025-04-09
- Publication Date
- 2026-05-15
AI Technical Summary
Existing hair dryers are prone to having their air inlets clogged by hair, dust, and other foreign objects during long-term use, resulting in reduced airflow, low cleaning efficiency, and impaired performance.
This hair dryer features a reverse airflow function, allowing for self-cleaning through forward and reverse airflow modes. Forward airflow is used for drying and styling, while reverse airflow is used to clean the air intake and exhaust components, preventing the accumulation of impurities.
It effectively maintains unobstructed air intake and exhaust, extends the lifespan of the hair dryer, improves user experience and equipment performance, and simplifies the cleaning and maintenance process.
Smart Images

Figure CN224234893U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of household appliance technology, and in particular to a hair dryer with a reverse blowing function. Background Technology
[0002] Hair dryers are commonly used for hair care, including drying and styling. A typical hair dryer consists of a housing, a brushed motor, fan blades, a heating element, and a switch. The housing has an air inlet and an air outlet, with an air inlet baffle containing several air holes. When the hair dryer is plugged into a power source and the switch is closed, the brushed motor drives the fan blades to rotate, propelling air through the energized heating element. The air is then heated and blown out of the outlet to dry and style the hair.
[0003] However, after long-term use, hair, dust and other foreign objects often clog the air intake holes of the air intake baffle of the hair dryer, resulting in a reduction in the air intake volume of the casing. Therefore, users need to clean the hair, dust and other foreign objects on the air intake holes to keep the air intake unobstructed. However, there are many air intake holes, and users need to unclog each air intake hole one by one, resulting in low dust removal efficiency. Therefore, there is room for improvement. Utility Model Content
[0004] To address the aforementioned issues, this utility model presents a hair dryer with a reverse-blowing function that balances the user's daily usage needs with the convenience of self-cleaning and maintenance of the equipment, significantly enhancing the overall competitiveness of the product.
[0005] The technical solution adopted by this utility model is: a hair dryer with a reverse blowing function, including a shell, a fan assembly, a control assembly, an air outlet element, and an air inlet element. The shell is provided with an air outlet end and a grip end, and the grip end is provided with an air inlet end. The air outlet end and the grip end form a T-shaped structure. The air outlet element and the control assembly are respectively provided on both sides of the air outlet end. The fan assembly is provided inside the grip end, and the air outlet element is provided at the tail of the grip end. The control assembly includes a control board and a control button. The control button is used to control the fan assembly to blow air in the forward or reverse direction. When blowing air in the forward direction, the hair dryer works normally. When blowing air in the reverse direction, the air blows through the fan assembly toward the air inlet element, cleaning the air outlet element and the air inlet element by reverse blowing.
[0006] A further improvement to the above solution is that the outer shell includes a first shell and a second shell, the first shell and the second shell are fastened together to form a cavity inside, and the air outlet and air inlet are respectively arranged on both sides of the cavity.
[0007] A further improvement to the above solution is that mounting slots are provided on both sides of the air outlet end, and mounting buckles are provided on both sides of the air outlet element. The mounting buckles are used to cooperate with the mounting slots to fix the air outlet element to the air outlet end.
[0008] A further improvement to the above solution is that a decorative fixing ring is provided at the air outlet end, which is used to fix the end of the air outlet element to the air outlet end.
[0009] A further improvement to the above solution is that the control board is equipped with multiple electronic components, and the control buttons include a forward blowing button and a reverse blowing button. The forward blowing button is used to control the fan assembly to blow air in the forward direction, and the reverse blowing button is used to control the fan assembly to blow air in the reverse direction.
[0010] A further improvement to the above solution is that the air outlet element is provided with an annular air outlet groove, one end of which is connected to the housing to discharge or intake air from the fan assembly.
[0011] A further improvement to the above solution is that the fan assembly includes a high-speed fan and a mounting silicone sleeve, and the gripping end has a fan fixing groove inside, and the mounting silicone sleeve is used to fix the high-speed fan in the fan fixing groove.
[0012] A further improvement to the above solution is that a protective mounting platform is provided at the air inlet end, and a protective cover is provided on the protective mounting platform.
[0013] A further improvement to the above solution is that a filter screen is installed inside the air inlet, and a fixed mesh sleeve is installed between the protective sleeve and the protective mounting platform.
[0014] The beneficial effects of this utility model are:
[0015] Compared to existing hair dryers, this invention features a T-shaped structure formed by the air outlet and the grip end of the outer shell, achieving a rational division of functional areas. This layout makes the hair dryer comfortable to hold and easy to operate, conforming to ergonomic principles and reducing user fatigue during prolonged use. Simultaneously, the air outlet element and control components are respectively located on both sides of the air outlet end, while the fan assembly is placed inside the grip end. The compact and orderly layout of all components effectively utilizes internal space, improving the overall integrity and stability of the product. Functionally, the control buttons in the control component allow for flexible switching of the fan assembly's airflow direction. In forward airflow mode, the hair dryer can meet users' needs for drying hair and styling, just like traditional products, ensuring the integrity of its basic functions. The reverse airflow function is a major highlight. When the reverse airflow mode is activated, the airflow generated by the fan assembly is directed towards the air inlet element, effectively cleaning both the air outlet and air inlet elements. The air inlet element easily accumulates dust, hair, and other impurities during long-term use; reverse airflow promptly blows these impurities out, preventing their accumulation from affecting airflow efficiency and fan performance. The air outlet element can also accumulate dirt due to hot air blowing and contact with hair. Reverse airflow can clean its internal air ducts, maintaining smooth and even airflow, extending the lifespan of the hair dryer, and improving its performance. This invention balances the user's daily needs with the convenience of self-cleaning and maintenance, significantly enhancing the product's overall competitiveness. Attached Figure Description
[0016] Figure 1 This is a three-dimensional schematic diagram of the hair dryer with reverse blowing function according to this utility model;
[0017] Figure 2 for Figure 1 An explosion diagram of a hair dryer with a reverse blowing function;
[0018] Figure 3 for Figure 1 An explosion diagram from another perspective of a hair dryer with a reverse blowing function.
[0019] Explanation of reference numerals in the attached drawings: 1. Outer shell 11. Assembly slot 111. Decorative fixing ring 112. Grip end 12. Fan fixing slot 121. Air inlet 13. Protective mounting platform 131. Protective sleeve 132. Filter screen 133. Fixing mesh sleeve 134. First shell 14. Second shell 15. Fan assembly 2. High-speed fan 21. Mounting silicone sleeve 22. Control assembly 3. Control board 31. Electronic components 311. Control button 32. Forward blowing button 321. Backward blowing button 322. Air outlet element 4. Assembly buckle 41. Annular air outlet slot 42. Air inlet element 5. Detailed Implementation
[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.
[0021] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.
[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
[0023] like Figures 1-3As shown in one embodiment of the present invention, a hair dryer with a reverse blowing function includes a housing 1, a fan assembly 2, a control assembly 3, an air outlet element 4, and an air inlet element 5. The housing 1 is provided with an air outlet end 11 and a grip end 12. The grip end 12 is provided with an air inlet end 13. The air outlet end 11 and the grip end 12 form a T-shaped structure. The air outlet element 4 and the control assembly 3 are respectively provided on both sides of the air outlet end 11. The fan assembly 2 is provided inside the grip end 12. The air outlet element 4 is provided at the tail of the grip end 12. The control assembly 3 includes a control board 31 and a control button 32. The control button 32 is used to control the fan assembly 2 to blow air in the forward direction or in the reverse direction. When blowing air in the forward direction, the hair dryer works normally. When blowing air in the reverse direction, the air blows through the fan assembly 2 toward the air inlet element 5, cleaning the air outlet element 4 and the air inlet element 5 by reverse blowing. In terms of structural design, the T-shaped structure formed by the air outlet 11 and the grip 12 of the outer shell 1 achieves a reasonable division of functional areas. This layout makes the hair dryer comfortable to hold and easy to operate, conforms to ergonomic principles, and reduces user fatigue during prolonged use. Simultaneously, the air outlet element 4 and control component 3 are respectively positioned on both sides of the air outlet 11, while the fan assembly 2 is placed inside the grip 12. The compact and orderly layout of each component effectively utilizes the internal space, enhancing the overall integrity and stability of the product. Functionally, the control button 32 in the control component 3 can flexibly switch the airflow direction of the fan assembly 2. In forward airflow mode, the hair dryer can meet the user's needs for drying hair and styling, just like a traditional product, ensuring the integrity of its basic functions. The reverse airflow function is a major highlight. When the reverse airflow mode is activated, the airflow generated by the fan assembly 2 is directed towards the air inlet element 5, enabling efficient cleaning of both the air outlet element 4 and the air inlet element 5. During long-term use, the air inlet element 5 easily accumulates dust, hair, and other impurities. Reverse airflow can promptly blow these impurities out, preventing their accumulation from affecting airflow efficiency and fan performance. Similarly, the air outlet element 4 can accumulate dirt due to hot air being blown out and contact with hair. Reverse airflow can clean its internal air ducts, maintaining smooth and even airflow, extending the lifespan of the hair dryer, and improving its performance. This embodiment balances the user's daily usage needs with the convenience of self-cleaning and maintenance, significantly enhancing the product's overall competitiveness.
[0024] The outer casing 1 includes a first housing 14 and a second housing 15, which are interlocked to form an internal cavity. The air outlet 11 and air inlet 13 are respectively located on both sides of the cavity. In this embodiment, the cavity formed by the interlocking of the first housing 14 and the second housing 15 provides a stable and enclosed installation space for various components inside the hair dryer, effectively protecting internal circuits, motors, and other precision components from external dust and moisture, thus extending the service life of the device. The air outlet 11 and air inlet 13 are respectively located on both sides of the cavity, creating a reasonable airflow path. During forward blowing, outside air enters smoothly from the air inlet 13, is heated and accelerated internally, and then efficiently blown out from the air outlet 11, achieving normal functions such as drying hair. When the reverse blowing function is activated, the airflow reverses, with air entering from the air outlet 11 and being blown out from the air inlet 13. This bidirectional airflow mode broadens the application scenarios of the hair dryer, effectively cleans accumulated dust and impurities, maintains stable performance of the hair dryer, and ensures the long-term reliability of the reverse blowing function and the overall efficient operation of the hair dryer.
[0025] The air outlet 11 has mounting slots 111 on both sides, and the air outlet element 4 has mounting buckles 41 on both sides. The mounting buckles 41 are used to cooperate with the mounting slots 111 to fix the air outlet element 4 to the air outlet 11. Specifically, the air outlet 11 is provided with a decorative fixing ring 112, which is used to fix the end of the air outlet element 4 to the air outlet 11. In this embodiment, the cooperation between the mounting slots 111 and the mounting buckles 41 achieves precise positioning and stable installation of the air outlet element 4. This ensures that the air outlet element 4 will not loosen due to vibration or other factors during normal use, guaranteeing the stability and uniformity of the air outlet and avoiding localized abnormal air outlet conditions. Moreover, the design of the buckles and slots simplifies the installation steps and improves production efficiency during assembly. The decorative fixing rings 112 enhance the fixing effect of the end of the air outlet element 4. They also play a reinforcing role in the mechanical structure, preventing the air outlet element 4 from coming off during long-term use or when subjected to external impact, and also improve the overall aesthetics of the product. When the hair dryer with reverse airflow function is working, the sturdy air outlet element 4 can better cope with the alternating impact of forward and reverse airflow, ensuring that the hair dryer maintains good performance and reliable structure while achieving the reverse airflow function.
[0026] The control board 31 is equipped with multiple electronic components 311. The control buttons 32 include a forward blowing button 321 and a reverse blowing button 322. The forward blowing button 321 controls the fan assembly 2 to blow air in the forward direction, and the reverse blowing button 322 controls the fan assembly 2 to blow air in the reverse direction. In this embodiment, the forward blowing button 321 precisely controls the fan assembly 2 to blow air in the forward direction, enabling conventional hair drying and styling functions. Depending on different hair types and styling needs, the wind speed, temperature, and other parameters of the forward blowing can be flexibly adjusted to meet diverse user scenarios, providing a convenient and efficient hair drying experience. The reverse blowing button 322 controls the fan assembly 2 to blow air in the reverse direction, which is a unique advantage of this hair dryer. Reverse blowing helps clean the internal air ducts of the hair dryer, effectively preventing the accumulation of hair, dust, and other debris in the air ducts, thus extending the lifespan of the hair dryer.
[0027] The air outlet element 4 is provided with an annular air outlet groove 42, one end of which is connected to the housing 1 for discharging or drawing in air from the fan assembly 2. In this embodiment, the annular air outlet groove 42 is connected to the housing 1, allowing the air generated by the fan assembly 2 to be smoothly discharged through the annular air outlet groove 42 during normal blowing mode. This annular air outlet design makes the airflow more uniform and gentle, covering a wider area and effectively avoiding situations where the local airflow is too strong or too weak, thereby improving the efficiency and comfort of drying hair. When the reverse blowing function is activated, the annular air outlet groove 42 acts as an air inlet. Outside air can smoothly enter the housing 1 through this groove, ensuring the stability of the airflow circulation. This not only helps maintain airflow inside the hair dryer and prevents damage to components due to heat buildup, but also provides sufficient and stable airflow for reverse blowing, making the reverse blowing effect more ideal and effectively cleaning hair, dust, and other debris inside the hair dryer, thus extending the lifespan of the hair dryer.
[0028] The blower assembly 2 includes a high-speed blower 21 and a silicone mounting sleeve 22. The gripping end 12 has a blower fixing groove 121 inside, and the silicone mounting sleeve 22 is used to fix the high-speed blower 21 within the blower fixing groove 121. In this embodiment, the high-speed blower 21 provides a powerful and stable airflow output for the hair dryer, meeting the needs of different wind speeds and pressures. Whether quickly drying hair or creating a specific hairstyle, it provides reliable power support. The silicone mounting sleeve 22 serves two purposes: firstly, it stabilizes the high-speed blower 21, precisely fixing it within the blower fixing groove 121, effectively preventing the blower from shaking or shifting during operation, ensuring the stability and reliability of the blower's operation, and thus guaranteeing the stable performance of the overall hair dryer. Secondly, the silicone sleeve has a certain buffering and shock-absorbing performance, reducing the vibration generated by the high-speed blower 21 during operation and reducing noise during use, thus improving the user experience.
[0029] The air inlet 13 is provided with a protective mounting platform 131, on which a protective sleeve 132 is mounted. Specifically, a filter screen 133 is provided inside the air inlet 13, and a fixing mesh sleeve 134 is provided between the protective sleeve 132 and the protective mounting platform 131. In this embodiment, the protective mounting platform 131 provides a stable mounting base for the protective sleeve 132, ensuring its stability during the operation of the hair dryer. The presence of the protective sleeve 132 can effectively prevent larger foreign objects from directly entering the hair dryer, avoiding damage to internal precision components and extending the service life of the hair dryer. The filter screen 133 inside the air inlet 13 can further filter fine dust particles in the air, preventing them from entering the hair dryer's air duct, thereby maintaining the cleanliness of the air duct, ensuring the purity of the air output from the hair dryer, and reducing odor generation caused by dust accumulation. The fixed mesh sleeve 134 set between the protective sleeve 132 and the protective mounting platform 131 enhances the overall stability of the protective structure and further refines the filtration, blocking foreign objects between the filtration range of the filter screen 133 and the blocking range of the protective sleeve 132. The combined effect of multiple protections improves the overall protective performance of the hair dryer.
[0030] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A hair dryer with a reverse blowing function, characterized in that: The device includes a housing, a fan assembly, a control assembly, an air outlet element, and an air inlet element. The housing has an air outlet end and a grip end, and the grip end has an air inlet end. The air outlet end and the grip end form a T-shaped structure. The air outlet element and the control assembly are respectively located on both sides of the air outlet end. The fan assembly is located inside the grip end, and the air outlet element is located at the tail of the grip end. The control assembly includes a control board and a control button. The control button is used to control the fan assembly to blow air in the forward or reverse direction. When blowing air in the forward direction, the blower works normally. When blowing air in the reverse direction, the air blows through the fan assembly towards the air inlet element, cleaning the air outlet element and the air inlet element by reverse airflow.
2. The hair dryer with reverse blowing function according to claim 1, characterized in that: The outer casing includes a first casing and a second casing, which are fastened together to form a cavity inside. The air outlet and air inlet are respectively located on both sides of the cavity.
3. The hair dryer with reverse blowing function according to claim 1, characterized in that: The air outlet end is provided with mounting slots on both sides, and the air outlet element is provided with mounting buckles on both sides. The mounting buckles are used to cooperate with the mounting slots to fix the air outlet element to the air outlet end.
4. The hair dryer with reverse blowing function according to claim 3, characterized in that: The air outlet end is provided with a decorative fixing ring, which is used to fix the end of the air outlet element to the air outlet end.
5. The hair dryer with reverse blowing function according to claim 1, characterized in that: The control board is equipped with multiple electronic components. The control buttons include a forward blowing button and a reverse blowing button. The forward blowing button is used to control the fan assembly to blow air in the forward direction, and the reverse blowing button is used to control the fan assembly to blow air in the reverse direction.
6. The hair dryer with reverse blowing function according to claim 1, characterized in that: The air outlet element is provided with an annular air outlet groove, one end of which is connected to the housing to discharge or intake air from the fan assembly.
7. The hair dryer with reverse blowing function according to claim 1, characterized in that: The fan assembly includes a high-speed fan and a mounting silicone sleeve. The gripping end has a fan fixing groove inside, and the mounting silicone sleeve is used to fix the high-speed fan in the fan fixing groove.
8. The hair dryer with reverse blowing function according to claim 1, characterized in that: The air inlet end is provided with a protective mounting platform, and a protective cover is provided on the protective mounting platform.
9. The hair dryer with reverse blowing function according to claim 8, characterized in that: The air inlet is equipped with a filter screen, and a fixed mesh sleeve is provided between the protective sleeve and the protective mounting platform.