Intermediate air intake hair dryer
By using a central air intake design and optimized airflow path, the problems of slow air intake and uneven heating in existing hair dryers have been solved, resulting in a more efficient and safer drying effect.
Patent Information
- Application Number
- CN202522076472.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-26
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-09-26
AI Technical Summary
Existing hair dryers have shortcomings such as slow air intake speed, limited air flow, uneven air distribution, and poor heating effect, which affect their efficiency and safety.
It adopts a central air intake design, with a flow divider plate installed on the inner wall of the inner air duct, and heating elements arranged in a radial pattern around the inner wall of the heating tube. Combined with the centrifugal fan and air guide plate structure, it optimizes the airflow path and heat distribution.
It improves air intake speed and heating efficiency, ensures uniform distribution of hot air, enhances drying efficiency and safety, and reduces noise and energy consumption.
Smart Images
Figure CN224924706U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hair dryer technology, specifically to a hair dryer with a central air inlet. Background Technology
[0002] Hair dryers, as common personal care appliances and small household appliances, are widely used in homes, barbershops, and other settings. They primarily use a motor-driven fan to generate airflow, which is then heated by a heating element to quickly dry hair or other items. As users' demands for a superior user experience continue to rise, the market is placing higher requirements on hair dryer performance, including airflow speed, heating efficiency, temperature uniformity, heat dissipation, ease of use, and safety.
[0003] Currently, existing hair dryers still have some shortcomings in terms of structural design and functional implementation, mainly in the following aspects: Traditional hair dryers mostly adopt a single-sided air intake or a single rear air intake method, which results in slow air intake speed and limited air flow, affecting drying efficiency; at the same time, some products lack a reasonable airflow guiding structure, which leads to turbulent airflow within the casing, not only increasing wind resistance and reducing wind speed, but also potentially affecting heating effect due to uneven airflow distribution.
[0004] Therefore, it is necessary to develop a hair dryer with a more reasonable structural design and better performance to meet users' needs for efficient, safe and convenient use. Utility Model Content
[0005] To overcome the shortcomings of the existing technology, a center air intake blower is provided to solve the problems mentioned in the existing technology.
[0006] To achieve the above objectives, a center-inlet blower is provided, comprising a housing and a circuit board. A hollow air inlet channel is provided in the upper part of the housing, and a handle is provided in the lower part of the housing, with the circuit board installed inside the handle; it also includes... An inner air duct is located at the front of the hollow air inlet channel. The inner air duct is wider at the front and narrower at the back, and multiple flow plates are provided on the inner side wall of the inner air duct. A heating element is provided in the middle of the hollow air inlet channel. An inner channel is provided inside the heating element, and multiple sets of heating plates are arranged around the inner side wall of the heating element in a radial pattern about the center of the heating element. A mounting bracket is fitted on the outer side of the heating element and the mounting bracket is fixed to the upper inner wall of the housing. The motor is located at the rear of the hollow air inlet channel. The motor is installed on the rear of the outer side of the centrifugal fan. The centrifugal fan is provided with a housing. A frame is fixed to the rear side of the housing. Multiple sets of blades are arranged in the inner ring of the housing. The inner air duct is assembled and connected with the heating pipe and the motor. The inner air duct, heating pipe and motor are all detachable structures. The airflow between the center of the inner air duct and the heating pipe flows from back to front.
[0007] Furthermore, the upper outer side of the housing is provided with small holes and upper heat dissipation holes. The small holes adopt a small oval hole structure, and the upper heat dissipation holes adopt a long strip-shaped ventilation hole structure. An air outlet is provided at the upper front end of the housing.
[0008] Furthermore, a rear cover is provided on the upper rear side of the housing, a rear heat dissipation hole is provided on the rear side of the rear cover, and the rear part of the hollow air intake channel is opened inside the rear cover. The left and right sides of the rear cover are recessed inward to form a groove, and an air inlet is provided on the inner side of the groove.
[0009] Furthermore, a switch button is provided on the upper rear part of the outer side of the handle, and lower heat dissipation holes are provided on both the left and right sides of the handle, and the lower heat dissipation holes adopt a long strip-shaped heat dissipation hole structure.
[0010] Furthermore, the lower end of the handle is provided with a connecting wire, the upper end of which is connected to the circuit board, and a hanging ring is provided on the outer rear part of the connecting wire.
[0011] Furthermore, the rear of the circuit board is wrapped with a first heat transfer sheet, and two sets of first heat transfer intermediate plates are fixed to the rear of the first heat transfer sheet. Multiple sets of first heat dissipation fins are connected to the left and right sides of the first heat transfer intermediate plates.
[0012] Furthermore, an upper air guide plate is provided inside the rear hood, and a lower air guide plate is provided on the lower side inside the rear hood. Multiple sets of air outlets are provided in the middle of the front part of the upper and lower air guide plates, and the front end of the air outlets leads to the middle of the hollow air inlet channel.
[0013] This utility model provides a center-inlet air blower, which, through its unique design and technical features, has significant advantages and positive effects compared to existing technologies, as detailed below: 1. This utility model centrifugal fan introduces external airflow into the hollow air intake channel through air inlets on both sides, allowing for faster airflow from both sides simultaneously. The air inlets also provide safety protection and prevent blockage. Multiple sets of heating elements are arranged in a radial pattern around the inner wall of the heating tube, resulting in more even heat distribution and significantly improved heating efficiency. The inner channel within the heating tube further optimizes the flow of hot air, enabling faster and more even heat transfer to the air outlet, thus improving overall heating efficiency. The inner air duct, with multiple diverter plates on its inner wall, effectively guides and diverts airflow, ensuring even heating as the air passes through the heating tube. The front-wide, rear-narrow design of the inner air duct further optimizes the airflow path, ensuring uniform distribution of hot air and preventing localized overheating or overcooling.
[0014] 2. The centrifugal fan in this utility model is designed to facilitate the introduction of outside airflow from the hollow section and output it from the side. It uses a high-speed rotating impeller to compress the gas, which is more efficient, stable, and reduces noise and losses. Attached Figure Description
[0015] Figure 1 These are renderings of an embodiment of the present utility model; Figure 2 This is a cross-sectional schematic diagram of an embodiment of the present utility model; Figure 3 This is a front view schematic diagram of an embodiment of the present utility model; Figure 4 This is a rear view diagram of an embodiment of the present utility model; Figure 5 This is a schematic cross-sectional view of the inner air duct of an embodiment of the present utility model; Figure 6 This is a rear view schematic diagram of the heating tube according to an embodiment of the present utility model; Figure 7 This is a schematic cross-sectional view of the heating tube in an embodiment of the present invention; Figure 8 This is a schematic diagram showing the unfolded internal structure of the rear hood according to an embodiment of the present invention.
[0016] In the diagram: 1. Housing; 10. Rear cover; 100. Small hole; 101. Upper heat dissipation hole; 102. Lower air guide plate; 103. Upper air guide plate; 104. Air outlet; 105. Hollow air inlet channel; 106. Rear heat dissipation hole; 11. Groove; 12. Air inlet; 13. Handle; 14. Switch button; 15. Lower heat dissipation hole; 16. Hanging ring; 17. Connecting wire; 18. Air nozzle; 2. Inner air duct; 20. Diverter plate; 3. Circuit board; 30. First heat transfer fin; 31. First heat transfer plate; 32. First heat dissipation fin; 4. Heating tube; 40. Heating element; 41. Mounting bracket; 42. Inner channel; 5. Motor; 50. Housing; 51. Frame; 52. Centrifugal fan; 53. Blade. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the 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 scope of protection of the present utility model.
[0018] Please see Figure 1-8 An embodiment of the present invention is provided: a blower with a central air intake, including a housing 1 and a circuit board 3. A hollow air intake channel 105 is provided in the upper part of the housing 1, and a handle 13 is provided in the lower part of the housing 1. The circuit board 3 is installed in the handle 13. The inner air duct 2 is located at the front of the hollow air inlet channel 105. The inner air duct 2 is wider at the front and narrower at the back, and multiple flow plates 20 are provided on the inner side wall of the inner air duct 2. The diffuser plate 20 on the inner wall of the inner air duct 2 in this utility model facilitates the even distribution of the blown air, so as to prevent the blown air from being too concentrated in one place and easily causing burns. The even blowing of air to dry hair is more convenient and practical.
[0019] Heating tube 4 is located in the middle of the hollow air inlet channel 105. An inner channel 42 is opened inside the heating tube 4, and multiple sets of heating plates 40 are arranged around the inner side wall of the heating tube 4. The multiple sets of heating plates 40 are arranged in a radial pattern about the center of the heating tube 4, and a mounting bracket 41 is fitted on the outer side of the heating tube 4. The mounting bracket 41 is fixed to the upper inner wall of the housing 1. The heating tube 4 in this utility model is designed to facilitate the electric heating and heat conduction of the airflow, so that heating can be carried out when hot air is needed. The airflow can enter from the middle air inlet 12 of the rear cover 10, then be conveyed through the middle of the upper part of the casing 1, and pass through the inner channel 42, so that the airflow from the middle is faster and more direct.
[0020] Motor 5 is located at the rear of the hollow air inlet channel 105. Motor 5 is installed on the rear of the outer side of the centrifugal fan 52. The centrifugal fan 52 is provided with a housing 50. A frame 51 is fixed to the rear side of the housing 50. Multiple sets of blades 53 are arranged in the inner ring of the housing 50. In this invention, the motor 5 is designed to facilitate the rotation of the shaft, driving the centrifugal fan to draw outside air into the rear cover 10 through the air inlet 12. The air is then guided by the lower air guide plate 102 and the upper air guide plate 103 to the upper middle of the casing 1, making air delivery more convenient and efficient.
[0021] The inner air duct 2 is assembled and connected with the heating pipe 4 and the motor 5. The inner air duct 2, the heating pipe 4 and the motor 5 are all detachable structures. The airflow between the center of the inner air duct 2 and the heating pipe 4 flows from back to front.
[0022] In this invention, the rear end of the inner air duct 2 is rotated clockwise and twisted into the front end of the heating tube 4. The assembly and connection method is simple and convenient, and the installation is quick and easy. After the inner air duct 2, heating tube 4 and centrifugal fan 52 are assembled together, the internal air can circulate. The centrifugal fan introduces airflow from the air inlet 12 to achieve the effect of airflow in the middle and airflow out the side. It is convenient to introduce airflow from the rear into the middle area, and after being heated by the heating tube 4, the hot air is evenly delivered and blown out by the inner air duct 2, which is convenient for even drying of the user's hair, making drying more even and faster.
[0023] The upper outer side of the casing 1 is provided with a small hole 100 and an upper heat dissipation hole 101. The small hole 100 adopts a small oval hole structure, and the upper heat dissipation hole 101 adopts a long strip-shaped ventilation hole structure. The upper front end of the casing 1 is provided with an air outlet 18.
[0024] A rear cover 10 is provided on the upper rear side of the housing 1. A rear heat dissipation hole 106 is provided on the rear side of the rear cover 10. The rear part of the hollow air intake channel 105 is opened inside the rear cover 10. The left and right sides of the rear cover 10 are recessed inward to form a groove 11. An air inlet 12 is provided on the inner side of the groove 11.
[0025] A switch button 14 is provided on the upper rear part of the outer side of the handle 13, and lower heat dissipation holes 15 are provided on both the left and right sides of the handle 13, and the lower heat dissipation holes 15 adopt a long strip-shaped heat dissipation hole structure.
[0026] The lower end of the handle 13 is provided with a connecting line 17, and the upper end of the connecting line 17 is connected to the circuit board 3. A hanging ring 16 is provided on the outer rear part of the connecting line 17.
[0027] In this utility model, the heat dissipated by the heating tube 4 after heating is also facilitated by the small hole 100 for cold air to enter and the upper heat dissipation hole 101 for heat dissipation after use. The air inlets 12 set on the left and right sides of the cover 10 facilitate the introduction of outside air flow into the hollow air intake channel 105 by the rotating shaft of the motor driving the centrifugal fan. The simultaneous air intake from both sides is faster, and the air inlets 12 also have the effect of safety protection and anti-blocking, making it safer and more practical.
[0028] The rear of the circuit board 3 is wrapped with a first heat transfer sheet 30, and two sets of first heat transfer intermediate plates 31 are fixed to the rear of the first heat transfer sheet 30. Multiple sets of first heat dissipation fins 32 are connected to the left and right sides of the first heat transfer intermediate plates 31.
[0029] The circuit board 3 in this utility model facilitates the electrical control of the heating tube 4 and the motor 5. During use, it also facilitates the dissipation of heat through the first heat transfer plate 30, the first heat transfer plate 31 and the first heat dissipation fins 32. The heat can then be discharged outward through the lower heat dissipation hole 15, which is more convenient and saves time.
[0030] An upper air guide plate 103 is provided inside the rear cover 10, and a lower air guide plate 102 is provided inside the lower part of the rear cover 10. Multiple air outlets 104 are provided in the middle of the front part of the upper air guide plate 103 and the lower air guide plate 102, and the front end of the air outlet 104 leads to the middle of the hollow air inlet channel 105.
[0031] The purpose of this utility model is to concentrate the airflow inside the rear cover 10 and guide it forward, and send it out through multiple sets of air outlets 104, so as to facilitate centralized air intake in the middle and make it more efficient and practical.
[0032] In this embodiment of the application, when using the central air intake hair dryer, first connect the power supply through the connecting wire 17 at the lower end of the handle 13 to power the circuit board 3. At this time, hold the handle 13 and start the device by operating the switch button 14 on the upper rear side of the handle 13.
[0033] After startup, motor 5 starts working, using a high-speed rotating impeller to accelerate the gas, drawing outside air into the rear cover 10 through the air inlets 12 inside the grooves 11 on both sides of the rear cover 10. The airflow entering the rear cover 10 is guided by the upper air guide plate 103 and the lower air guide plate 102 inside, and is concentrated and sent into the middle of the hollow air intake channel 105 through multiple sets of air outlets 104 in the middle of the front of the two.
[0034] After the airflow enters the hollow air inlet channel 105, it continues to flow forward. When it passes the heating tube 4, multiple sets of heating plates 40 arranged in a radial pattern on the inner wall of the heating tube 4 heat the airflow. The heated airflow is then transported forward through the inner channel 42 inside the heating tube 4.
[0035] Subsequently, the heated airflow enters the inner air duct 2. The multi-component flow plate 20 on the inner wall of the inner air duct 2 evenly distributes the airflow. At the same time, the structure of the inner air duct 2, which is wider at the front and narrower at the back, further optimizes the airflow. Finally, the airflow is blown out through the air outlet 18 at the front end of the upper part of the casing 1 to achieve the drying of the hair.
[0036] During equipment operation, the heat generated by the circuit board 3 is transferred to the two sets of first heat transfer plates 31 via the first heat transfer sheet 30, and then dissipated by multiple sets of first heat dissipation fins 32 on the left and right sides of the first heat transfer plates 31, and finally discharged through the lower heat dissipation holes 15 on the left and right sides of the handle 13. In addition, excess heat emitted by the heating tube 4 during operation and other heat inside the equipment can be dissipated through the small holes 100 and upper heat dissipation holes 101 on the upper outer side of the casing 1, and the rear heat dissipation holes 106 on the rear side of the rear cover 10, ensuring stable operation of the equipment.
[0037] After use, turn off the switch button 14, disconnect the connection cable 17 from the power supply, and hang the device through the hanging ring 16 on the outer rear of the connection cable 17.
[0038] Obviously, the embodiments described above 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 should fall within the protection scope of this utility model.
[0039] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0040] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.
[0041] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A central air intake hair dryer, characterized in that, The device includes a housing (1) and a circuit board (3). The upper part of the housing (1) is provided with a hollow air inlet channel (105), and a handle (13) is provided in the lower part of the housing (1). The circuit board (3) is installed in the handle (13). The inner air duct (2) is located at the front of the hollow air inlet channel (105). The inner air duct (2) is wider at the front and narrower at the back, and multiple flow plates (20) are provided on the inner side wall of the inner air duct (2). Heating tube (4), the heating tube (4) is located in the middle of the hollow air inlet channel (105), the heating tube (4) has an inner channel (42) inside, and multiple sets of heating plates (40) are arranged around the inner side wall of the heating tube (4). The multiple sets of heating plates (40) are arranged in a radial pattern about the center of the heating tube (4), and a mounting bracket (41) is fitted on the outer side of the heating tube (4). The mounting bracket (41) is fixed on the upper inner wall of the casing (1). The motor (5) is located at the rear of the hollow air inlet channel (105). The motor (5) is installed on the rear of the outer side of the centrifugal fan (52). The centrifugal fan (52) is provided with a housing (50). A frame (51) is fixed on the rear side of the housing (50). Multiple sets of blades (53) are provided in the inner ring of the housing (50). The inner air duct (2) is assembled and connected with the heating pipe (4), and the heating pipe (4) is connected with the motor (5). The inner air duct (2), the heating pipe (4) and the motor (5) are all detachable structures, and the airflow between the center of the inner air duct (2) and the heating pipe (4) flows from back to front.
2. The intermediate air inlet blower according to claim 1, characterized in that, The upper outer side of the casing (1) is provided with a small hole (100) and an upper heat dissipation hole (101). The small hole (100) adopts a small oval hole structure, and the upper heat dissipation hole (101) adopts a long strip-shaped ventilation hole structure. The upper front end of the casing (1) is provided with an air outlet (18).
3. A blower with intermediate air inlet according to claim 1, characterized in that, The upper rear side of the housing (1) is provided with a rear cover (10), the rear side of the rear cover (10) is provided with a rear heat dissipation hole (106), and the rear part of the hollow air inlet channel (105) is opened in the rear cover (10). The left and right sides of the rear cover (10) are recessed inward to form a groove (11), and the inner side of the groove (11) is provided with an air inlet (12).
4. A blower with intermediate air inlet according to claim 1, characterized in that, A switch button (14) is provided on the upper rear part of the outer side of the handle (13), and lower heat dissipation holes (15) are provided on both the left and right sides of the handle (13), and the lower heat dissipation holes (15) adopt a long strip heat dissipation hole structure.
5. A blower with intermediate air inlet according to claim 1, characterized in that, The lower end of the handle (13) is provided with a connecting line (17), and the upper end of the connecting line (17) is connected to the circuit board (3), and a hanging ring (16) is provided on the outer rear part of the connecting line (17).
6. A blower with intermediate air inlet according to claim 5, characterized in that, The rear of the circuit board (3) is wrapped with a first heat transfer sheet (30), and two sets of first heat transfer plates (31) are fixed to the rear of the first heat transfer sheet (30). Multiple sets of first heat dissipation fins (32) are connected to the left and right sides of the first heat transfer plate (31).
7. A blower with intermediate air inlet according to claim 3, characterized in that, The upper part of the rear cover (10) is provided with an upper air guide plate (103), and the lower part of the rear cover (10) is provided with a lower air guide plate (102). Multiple air outlets (104) are provided in the middle of the front part of the upper air guide plate (103) and the lower air guide plate (102). The front end of the air outlet (104) leads to the middle of the hollow air inlet channel (105).