A hair dryer with dynamic adjustment function

By integrating temperature and distance sensors into the air outlet of the hair dryer, combined with the warning design of LED beads, an intelligent dynamic adjustment function is achieved, which solves the problems of scalp dryness and hair thinning caused by excessive hot air blowing, and improves the safety and comfort of use.

CN224291452UActive Publication Date: 2026-05-29DONGGUAN MEISHENG INTELLIGENT TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN MEISHENG INTELLIGENT TECH CO LTD
Filing Date
2025-06-13
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

When using a hair dryer, hot air blows directly onto the scalp, which can cause certain areas to become excessively dry, leading to itching and potentially causing the hair to lose moisture and become thin. Current technology cannot effectively prevent this problem.

Method used

The hairdryer integrates a temperature sensor and a distance sensor at the air outlet. The main control module monitors the hot air temperature and the distance to the scalp in real time, adjusts the airflow and temperature accordingly, and uses LED lights to warn users of proper use, thus achieving intelligent dynamic adjustment.

Benefits of technology

It effectively avoids scalp dryness and hair thinning caused by excessive blow-drying, improves safety and comfort, meets personalized needs, and enhances the human-computer interaction experience.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224291452U_ABST
Patent Text Reader

Abstract

The utility model relates to hair dryer technical field especially is involved in a kind of hair dryer with dynamic adjustment function, including hollow main body, hollow main body is opened with air inlet and air outlet, so that the air duct along air inlet to air outlet is formed in hollow main body inside, air supply component and heating component are provided in air duct, the inside of hollow main body is further provided with the main control module electrically connected to air supply component and heating component, hollow main body surface is further integrated with the control component electrically connected to main control module, air duct is provided with the air guide sleeve butting in air outlet, annular component around air outlet is provided between air guide sleeve and hollow main body, annular component is provided with multiple function areas, by integrating temperature sensor, distance sensor and lamp pearl and other components, the dynamic adjustment function of intelligentization is realized, in use process, can effectively avoid the dryness of scalp, itching due to excessive blow and other problems, such as hair becomes sparse due to water loss, better protect scalp and hair quality health.
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Description

Technical Field

[0001] This utility model relates to the field of hair dryer technology, and in particular to a hair dryer with dynamic adjustment function. Background Technology

[0002] The hair dryer's structural design revolves around airflow generation and control, with its core consisting of the main body, heating module, air supply module, handle assembly, and control system. The main body serves as the basic framework, internally constructing a complete air duct structure. Its smooth curved design effectively reduces wind resistance and ensures efficient airflow transmission.

[0003] The air duct integrates a heating module and an air supply module, which work together to regulate the airflow temperature and force. The heating module is usually made of ceramic or PTC thermistor material, which has the characteristics of rapid heating and stable constant temperature performance, and can avoid local overheating damage to the hair. The air supply module consists of a motor and a fan. The high-speed motor drives the fan to generate a strong airflow. The airflow is heated after contacting the heating module in the air duct, forming hot air with a specific temperature.

[0004] The handle structure is a key part of the hair dryer's human-computer interaction, integrating a control board and control components. The control board, acting as the "brain," precisely regulates the temperature settings of the heating module and the rotation speed of the air supply module, enabling switching between various modes such as cold air, hot air, strong air, and weak air. The control components include physical switches such as buttons and knobs, or intelligent interactive components such as touch screens, allowing users to easily adjust the hair dryer's working status as needed. When in use, the user holds the handle, starts the hair dryer, and the directional hot air, after being regulated, blows out from the air outlet to dry and style the hair. Its convenient and efficient structural design meets daily hair care needs.

[0005] However, when using a hair dryer, the hot air blows directly onto the scalp. Over-drying a certain area can cause the scalp to become too dry and itchy. Since over-drying does not cause an extreme reaction to the user's head, users often unconsciously or due to operating habits over-dry a certain area when using a hair dryer. Over time, the hair in that area will lose moisture and become thin. To prevent this, it is necessary to propose a new technical solution. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0007] A hair dryer with dynamic adjustment function includes a hollow body with an air inlet and an air outlet, forming an air duct inside the hollow body from the air inlet to the air outlet. An air supply component and a heating component are installed within the air duct. A main control module electrically connected to the air supply component and the heating component is also installed inside the hollow body. A control component electrically connected to the main control module is integrated on the surface of the hollow body. An air guide sleeve is installed within the air duct and docks with the air outlet. An annular component surrounding the air outlet is arranged between the air guide sleeve and the hollow body. The annular component has multiple functional areas, each integrating a distance sensor or an LED. A temperature sensor is also installed on the air guide sleeve, corresponding to the axis of the air outlet. The distance sensor, temperature sensor, and LED are all electrically connected to the main control module.

[0008] Preferably, the heating element includes a sleeve-shaped heat insulation body mated to the inner wall of the air guide sleeve, a sleeve-shaped heating body corresponding to the air outlet axis, and a heat-conducting bracket connecting the sleeve-shaped heat insulation body and the sleeve-shaped heating body.

[0009] Preferably, the end of the air guide sleeve is provided with an air guide frame, the middle of the air guide frame is provided with an inner ring body, the end of the sleeve-shaped heating element is provided with a fixing seat that connects to the inner ring body, a protective cover is provided between the inner ring body and the fixing seat, and the temperature sensor is installed on the fixing seat and covered by the protective cover.

[0010] Preferably, the annular component includes an annular circuit board fixedly installed at the end of the hollow main body, an annular light-transmitting cover fixedly installed at the end of the hollow main body, and an annular light-shielding cover snapped onto the annular light-transmitting cover. The distance sensor and the LED are both integrated on the annular circuit board. The annular light-transmitting cover covers the annular circuit board. Multiple protruding structures are formed on the annular light-transmitting cover to serve as multiple functional areas. The distance sensor and the LED correspond to the protruding structures. Multiple through holes corresponding to the protruding structures are opened on the annular light-shielding cover, allowing the protruding structures to protrude through the through holes.

[0011] Preferably, two distance sensors are provided, and the two distance sensors are symmetrical about the vertical plane corresponding to the axis of the air outlet.

[0012] Preferably, the control component includes a control motherboard disposed inside the hollow body. The control motherboard integrates a mode switching key, a wind speed adjustment key, a wind temperature indicator module, a wind speed indicator module, and a mode indicator module that are connected to the surface of the hollow body. The wind temperature indicator module, the wind speed indicator module, and the mode indicator module are all electrically connected to the main control module through the control motherboard.

[0013] Preferably, the hollow body has a handle portion, on which a push knob electrically connected to the main control module is provided.

[0014] Preferably, a negative ion generating module and a plasma generating module extending into the air duct are also provided inside the hollow body, and the negative ion generating module and the plasma generating module are electrically connected to the main control module respectively.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] By integrating components such as temperature sensors, distance sensors, and LED beads, the device achieves intelligent dynamic adjustment. During use, it effectively avoids problems such as scalp dryness and itching caused by excessive blowing, as well as hair thinning due to dehydration, thus better protecting scalp and hair health. The temperature and distance sensors enable intelligent adjustment of temperature and airflow, making the hair dryer safer and more comfortable to use, meeting the personalized needs of different users. The LED bead warning design provides intuitive reminders for correct hair dryer use, enhancing the product's human-computer interaction experience.

[0017] By employing a guide sleeve structure, a certain space is created between the air outlet and the end of the hollow main body, and a ring-shaped component is installed. This provides space for the integration of multi-functional components, ensuring that the ring-shaped component does not cause significant air resistance at the air outlet. Furthermore, by setting multiple functional areas, and installing distance sensors or LEDs in these areas, with at least two distance sensors (preferably two) symmetrically positioned to the vertical plane corresponding to the air outlet axis, detection accuracy is improved. The LEDs also provide an alarm function, giving the ring-shaped component a multi-functional integration. This imbues the overall structure with multi-functional features while maintaining a simple design, meeting users' multiple expectations for safety, comfort, and personalization.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of this utility model facing the air outlet;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of this utility model;

[0023] Figure 4 This is a schematic diagram showing the disassembled structure of the heating element and the air guide sleeve in this utility model;

[0024] Figure 5 This is a schematic diagram of the disassembled structure of the annular component in this utility model;

[0025] Figure 6 This is a block diagram of the circuit connection module of this utility model.

[0026] The reference numerals and names in the figure are as follows:

[0027] Hollow body 10, air inlet 11, air outlet 12, air supply component 13, heating component 14, sleeve-shaped heat insulation body 141, sleeve-shaped heating element 142, heat conduction bracket 143, fixing base 144, main control module 15, control component 16, control motherboard 161, mode switching button 162, wind speed adjustment button 163, wind temperature indicator module 164, wind speed indicator module 165, mode indicator module 166, handle 17, push knob 18, negative ion generating module 151, air guide sleeve 20, temperature sensor 21, air guide frame 22, inner ring body 23, protective cover 24, ring component 30, functional area 31, distance sensor 32, LED bead 33, ring circuit board 34, ring light-transmitting cover 35, ring light-shielding cover 36, raised structure 37, through hole 38. Detailed Implementation

[0028] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] Please see Figure 1-6In this embodiment of the present invention, a hair dryer with dynamic adjustment function includes a hollow body 10. The hollow body 10 has an air inlet 11 and an air outlet 12, forming an air duct inside the hollow body 10 from the air inlet 11 to the air outlet 12. An air supply component 13 and a heating component 14 are disposed within the air duct. The air supply component 13 mainly consists of a motor and fan blades, providing directional fluid that enters through the air inlet 11 and exits through the air outlet 12. This directional fluid is heated by the heating component 14 after passing through it, thus providing hot air to the user's hair. The hollow body 10 also has an electrical connection to the air supply component. The main control module 15 of component 13 and heating component 14, and the control component 16 electrically connected to the main control module 15 are also integrated on the surface of the hollow body 10. An air guide sleeve 20 connected to the air outlet 12 is provided in the air duct. An annular component 30 surrounding the air outlet 12 is provided between the air guide sleeve 20 and the hollow body 10. The annular component 30 is provided with multiple functional areas 31. The functional areas 31 integrate a distance sensor 32 or an LED bead 33. A temperature sensor 21 is also installed on the air guide sleeve 20. The temperature sensor 21 is on the axis of the air outlet 12. The distance sensor 32, the temperature sensor 21 and the LED bead 33 are all electrically connected to the main control module 15.

[0030] In the above technical solution, by setting a distance sensor 32 and a temperature sensor 21 at the air outlet 12 of the hair dryer, when the user uses this hair dryer with dynamic adjustment function, the temperature sensor 21 monitors the hot air temperature at the axis of the air outlet 12 in real time and transmits the data to the main control module 15; the distance sensor 32 continuously detects the distance between the hair dryer and the scalp. If the distance sensor 32 senses that the hair dryer stays in the same position for too long, resulting in the distance being too close, it will feed back a signal to the main control module 15. After receiving this data, the main control module 15 analyzes and judges according to the preset program. If it determines that there is a risk of excessive blowing, it will immediately adjust the power of the heating element 14 to reduce the hot air temperature, and at the same time control the air supply element 13 to adjust the airflow to avoid damage to the scalp due to excessive blowing of high temperature hot air; at the same time, the main control module 15 will also control the LED bead 33 to light up, reminding the user to adjust the position of the hair dryer in time to prevent prolonged blowing of the same area.

[0031] Therefore, this technical solution integrates components such as temperature sensor 21, distance sensor 32, and LED bead 33 to achieve intelligent dynamic adjustment. During use, it can effectively avoid problems such as scalp dryness and itching caused by excessive blowing, and hair thinning due to water loss, thus better protecting scalp and hair health. The intelligent adjustment of temperature and wind power through the temperature sensor 21 and distance sensor 32 also makes the hair dryer safer and more comfortable to use, meeting the personalized needs of different users. The warning design of LED bead 33 reminds users to use the hair dryer correctly in an intuitive way, improving the human-computer interaction experience of the product.

[0032] By adopting the structure of the air guide sleeve 20, a certain space is formed between the air outlet 12 and the end of the hollow body 10, and an annular component 30 is set there. This provides space for the integration of multifunctional components, and the setting of the annular component 30 does not cause a large wind resistance at the air outlet 12. In addition, by setting multiple functional areas 31, distance sensors 32 or LED beads 33 are set on the functional areas 31. At least two distance sensors 32 are set, preferably two distance sensors 32, and the two distance sensors 32 are symmetrical to the vertical plane corresponding to the axis of the air outlet 12. This can improve the detection accuracy, and the LED beads 33 can realize the alarm function. This gives the annular component 30 a multifunctional collection, and the whole structure is given multifunctional features on the basis of simple structure, so as to meet the user's multiple expectations for safety, comfort and personalization.

[0033] Please see Figure 2-4Based on the above technical solution, the heating element 14 is further proposed to include a sleeve-shaped heat insulation body 141 connected to the inner wall of the air guide sleeve 20, a sleeve-shaped heating element 142 corresponding to the axis of the air outlet 12, and a heat-conducting bracket 143 connecting the sleeve-shaped heat insulation body 141 and the sleeve-shaped heating element 142; an air guide frame 22 is provided at the end of the air guide sleeve 20, an inner ring 23 is provided at the middle position of the air guide frame 22, a fixing seat 144 connected to the inner ring 23 is provided at the end of the sleeve-shaped heating element 142, a protective cover 24 is provided between the inner ring 23 and the fixing seat 144, and a temperature sensor 21 is installed on the fixing seat 144 and covered by the protective cover 24; the newly added heating element 14 has a clever structural design and achieves multiple functional improvements. The sleeve-shaped heat insulation body 141 effectively blocks the heat from spreading to the air guide sleeve 20, avoids the air guide sleeve 20 from deforming due to overheating, extends the service life of the hair dryer, and also reduces the risk of accidental burns to the user. The cooperation between the sleeve-shaped heating element 142 and the heat-conducting bracket 143 ensures that heat can be efficiently and evenly transferred to the air duct, improving the efficiency and stability of hot air generation. The sleeve-shaped heating element 142 has a hollow structure, which facilitates the passage of wires through its interior. That is, the wire used to connect the temperature sensor 21 can enter through the middle of the sleeve-shaped heating element 142, then extend from the rear, and finally connect to the main control module 15. The combination of the air guide bracket 22, the inner ring 23, and the fixing base 144 not only accurately positions the heating element and ensures that the hot air is stably blown out along the axis of the air outlet 12, but also provides a solid installation foundation for the temperature sensor 21. The protective cover 24 protects the temperature sensor 21 from interference from hot air, moisture, hair, and other debris, ensuring the accuracy and reliability of temperature monitoring data. This ensures that the main control module 15 can achieve intelligent and stable temperature control of the hair dryer based on accurate data, comprehensively improving the safety, functionality, and durability of the hair dryer.

[0034] Please see Figure 2 , Figure 3 and Figure 5Based on the above technical solution, the annular component 30 is further proposed to include an annular circuit board 34 fixedly installed at the end of the hollow main body 10, an annular light-transmitting cover 35 fixedly installed at the end of the hollow main body 10, and an annular light-shielding cover 36 snapped onto the annular light-transmitting cover 35. The distance sensor 32 and the LED bead 33 are both integrated on the annular circuit board 34. The annular light-transmitting cover 35 covers the annular circuit board 34. Multiple protruding structures 37 are formed on the annular light-transmitting cover 35 to serve as multiple functional areas 31. The distance sensor 32 and the LED bead 33 correspond to the protruding structures 37. Multiple through holes 38 corresponding to the protruding structures 37 are opened on the annular light-shielding cover 36, allowing the protruding structures 37 to protrude through the through holes 38. The annular circuit board 34 integrates the distance sensor 32 and the LED bead 33 in an orderly manner to ensure signal transmission. Stable transmission provides a solid foundation for the hair dryer's intelligent monitoring and warning functions. The annular light-transmitting cover 35 covers the circuit board, effectively protecting the internal electronic components from dust and moisture, extending their lifespan. Its raised structure 37 precisely divides the circuit into multiple functional areas 31, allowing for a more rational layout of sensors and light strips, improving detection accuracy and warning effects. The perforated design 38 on the annular light shield 36 ensures the normal operation of the raised structure 37 while effectively preventing light scattering, making the warning lights of the LED beads 33 more focused and conspicuous, enhancing visual alerts. These three elements work together to make the hair dryer's internal structure more compact and stable, and through the light-transmitting and light-shielding design, give the product a simple and beautiful appearance, balancing practicality and aesthetics, significantly improving the user experience and product competitiveness.

[0035] Please see Figure 1 , Figure 4 and Figure 6Based on the above technical solution, the control component 16 further includes a control motherboard 161 disposed inside the hollow body 10. The control motherboard 161 integrates a mode switching button 162, a fan speed adjustment button 163, a fan temperature indicator module 164, a fan speed indicator module 165, and a mode indicator module 166, all connected to the surface of the hollow body 10. The fan temperature indicator module 164, fan speed indicator module 165, and mode indicator module 166 are all electrically connected to the main control module 15 via the control motherboard 161. Users can quickly adjust the fan temperature, fan speed, and operating mode through intuitive button operation and indicator light feedback. The device has a handle 17, on which a push knob 18 electrically connected to the main control module 15 is provided; a negative ion generating module 151 and a plasma generating module 152 extending into the air duct are also provided in the hollow body 10, and the negative ion generating module 151 and the plasma generating module 152 are electrically connected to the main control module 15 respectively; the negative ion generating module 151 improves the condition of hair and scalp during the blow-drying process by generating negative ions, enhances the user experience and reduces damage, and the plasma generating module 152 neutralizes static electricity on the hair, reduces frizz and locks in moisture by generating plasma in the hair dryer, thereby making the hair smoother and more manageable. In the above technical solution, the settings of the mode switching key 162, the fan speed adjustment key 163, the air temperature indicator module 164, the fan speed indicator module 165, and the mode indicator module 166 provide users with more convenient operation. The mode switching key 162 is used to switch modes, allowing the hair dryer to work in intelligent mode or manual mode. The fan speed adjustment key 163 is used to adjust the fan speed of the air supply component 13. The air temperature indicator module 164 is used to indicate whether the heating component 14 is on or to what extent it is on. The fan speed indicator module 165 is used to indicate whether the air supply component 13 is on or to what extent it is on. The mode indicator module 166 indicates the current mode. In intelligent mode, the distance... Sensor 32 and temperature sensor 21 operate. Specifically, when the distance sensor 32 determines that the distance is less than 5cm, the power is reduced to low wind speed and the heating is turned off. At this time, the wind speed indicator module 165 displays blue. When the distance sensor 32 determines that the distance to the air outlet 12 is greater than 5cm and less than 15cm, the surface temperature is detected by the temperature sensor. If the surface temperature is lower than 55℃, the power is increased. If the surface temperature is higher than 69℃, the power is appropriately reduced to control the surface temperature at around 60℃. When the distance sensor 32 determines that the distance is greater than 15cm, both the wind speed and temperature change in an increasing direction to provide a high wind speed and high wind temperature hot air supply.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A hair dryer with dynamic adjustment function, comprising a hollow body (10), an air inlet (11) and an air outlet (12) provided on the hollow body (10), forming an air duct inside the hollow body (10) from the air inlet (11) to the air outlet (12), an air supply component (13) and a heating component (14) provided in the air duct, a main control module (15) electrically connected to the air supply component (13) and the heating component (14) also provided inside the hollow body (10), and a control component (16) electrically connected to the main control module (15) integrated on the surface of the hollow body (10), characterized in that, An air guide sleeve (20) is provided inside the air duct and is connected to the air outlet (12). An annular component (30) is provided between the air guide sleeve (20) and the hollow body (10) and surrounds the air outlet (12). The annular component (30) is provided with multiple functional areas (31). The functional areas (31) integrate a distance sensor (32) or an LED bead (33). A temperature sensor (21) is also installed on the air guide sleeve (20). The temperature sensor (21) is located on the axis of the air outlet (12). The distance sensor (32), the temperature sensor (21) and the LED bead (33) are all electrically connected to the main control module (15).

2. A hair dryer with dynamic adjustment function according to claim 1, characterized in that, The heating element (14) includes a sleeve-shaped heat insulation body (141) mated to the inner wall of the air guide sleeve (20), a sleeve-shaped heating element (142) corresponding to the axis of the air outlet (12), and a heat-conducting bracket (143) connecting the sleeve-shaped heat insulation body (141) and the sleeve-shaped heating element (142).

3. A hair dryer with dynamic adjustment function according to claim 2, characterized in that, The air guide sleeve (20) is provided with an air guide frame (22) at the end, and an inner ring body (23) is provided at the middle position of the air guide frame (22). The end of the sleeve-shaped heating element (142) is provided with a fixing seat (144) that is connected to the inner ring body (23). A protective cover (24) is provided between the inner ring body (23) and the fixing seat (144). The temperature sensor (21) is installed on the fixing seat (144) and covered by the protective cover (24).

4. A hair dryer with dynamic adjustment function according to claim 1, characterized in that, The annular component (30) includes an annular circuit board (34) fixedly installed at the end of the hollow body (10), an annular light-transmitting cover (35) fixedly installed at the end of the hollow body (10), and an annular light shield (36) snapped onto the annular light-transmitting cover (35). The distance sensor (32) and the lamp bead (33) are both integrated on the annular circuit board (34). The annular light-transmitting cover (35) covers the annular circuit board (34). Multiple protruding structures (37) are formed on the annular light-transmitting cover (35) to serve as multiple functional areas (31). The distance sensor (32) and the lamp bead (33) correspond to the protruding structures (37). Multiple through holes (38) corresponding to the protruding structures (37) are opened on the annular light shield (36) so that the protruding structures (37) can be seen through the through holes (38).

5. A hair dryer with dynamic adjustment function according to claim 1, characterized in that, There are two distance sensors (32), and the two distance sensors (32) are symmetrical about the vertical plane corresponding to the axis of the air outlet (12).

6. A hair dryer with dynamic adjustment function according to claim 1, characterized in that, The control unit (16) includes a control motherboard (161) located inside the hollow body (10). The control motherboard (161) integrates a mode switching key (162), a wind speed adjustment key (163), a wind temperature indicator module (164), a wind speed indicator module (165), and a mode indicator module (166) connected to the surface of the hollow body (10). The wind temperature indicator module (164), the wind speed indicator module (165), and the mode indicator module (166) are all electrically connected to the main control module (15) through the control motherboard (161).

7. A hair dryer with dynamic adjustment function according to claim 6, characterized in that, The hollow body (10) has a handle (17), and a push button (18) electrically connected to the main control module (15) is provided on the handle (17).

8. A hair dryer with dynamic adjustment function according to claim 7, characterized in that, The hollow body (10) is also equipped with a negative ion generating module (151) and a plasma generating module (152) extending into the air duct. The negative ion generating module (151) and the plasma generating module (152) are electrically connected to the main control module (15).