Air inlet structure of rear air inlet hair dryer

Abstract

The utility model discloses a kind of air intake structures of rear air intake hair dryer. It includes: air duct body;Several air inlets, set in the air intake end of the air duct body and located on the side wall of the air duct body;Fan module, set between the air intake end of the air duct body and the air outlet end of the air duct body;Flow guide plate, set in the inside of the air duct body and located between fan module and air inlet;Several flow guide holes, set on the flow guide plate;Transition fillet, set at the port of both ends of flow guide hole.The beneficial effects of the utility model are: reduce the wind noise of the air intake end of air duct body;It plays the role of protecting internal components, improves the service life of hair dryer;Increase wind speed;Increase the structural strength of filter screen;Filtering effect is good;Reduce fan noise.

Description

Technical Field

[0001] This utility model relates to the technical field of hair dryers, and in particular to the air intake structure of a rear-intake hair dryer. Background Technology

[0002] A hair dryer consists of a set of resistance wires and a high-speed motor. The high-speed motor contains fan blades that blow air. When powered on, the resistance wires generate heat, and the air blown by the fan passes through the resistance wires, turning into hot air. If only the small fan is running, but the resistance wires are not heated, then only air will be blown out, not hot air.

[0003] In existing hair dryer products, the airflow generates noticeable noise when it is drawn into the hair dryer by the fan blades on the high-speed motor, affecting the user experience.

[0004] In summary, there is a need for an air intake structure in a rear-intake hair dryer that can reduce wind noise. Utility Model Content

[0005] This invention aims to overcome the shortcomings of existing technologies where significant noise is generated when airflow is drawn into the hair dryer by the fan blades on a high-speed motor, affecting the user experience. It provides an air intake structure for a rear-intake hair dryer that can reduce wind noise.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An air intake structure for a rear-intake blower includes:

[0008] Air duct body;

[0009] Several air inlets are provided at the air inlet end of the air duct body and located on the side wall of the air duct body;

[0010] A fan module is disposed between the air inlet end and the air outlet end of the air duct body;

[0011] A baffle plate is disposed inside the air duct body and located between the fan module and the air inlet;

[0012] Several guide holes are provided on the guide plate;

[0013] The transition fillet is set at the ports at both ends of the guide hole.

[0014] After the fan module is running, the airflow is drawn into the air duct body through the air inlet under negative pressure. The airflow entering the air duct body is rectified and noise reduced by the guide holes on the guide plate. The transition rounded corners on the guide holes can transition the airflow, making the airflow smoother when entering and exiting the guide holes, which greatly reduces the wind noise at the air inlet of the air duct body.

[0015] Preferably, the air inlet end of the duct body is also equipped with a filter support cover. The filter support cover is fitted onto the air inlet end of the duct body, and a filter screen matching the air inlet is installed on the filter support cover, with the filter screen located on the outside of the air inlet. After the fan module is running, the airflow passes through the filter screen under negative pressure and is then drawn into the duct body through the air inlet. The filter screen can filter fine particles such as hair, protecting the internal components and improving the service life of the hair dryer.

[0016] Preferably, the device also includes a hair dryer body, with the air duct installed inside the hair dryer body. An air inlet mesh cover matching the filter support cover is mounted on the hair dryer body; the air inlet mesh cover and the hair dryer body are interlocked. The filter support cover is located inside the air inlet mesh cover, and the mesh aperture on the air inlet mesh cover is larger than the mesh aperture on the filter screen. After the fan module operates, the airflow, under negative pressure, passes sequentially through the air inlet mesh cover and the filter screen before being drawn into the air duct body through the air inlet. The air inlet mesh cover filters large particles, while the filter screen filters fine particles such as hair, thus protecting the internal components and extending the lifespan of the hair dryer.

[0017] Preferably, a guide cone is fixed inside the air duct body, with the tip of the guide cone facing the fan module, and the air inlet located on the outer side of the guide cone. The design of the guide cone guides the airflow entering the air duct body, reducing wind noise and increasing flow velocity.

[0018] Preferably, the filter screen is made of stainless steel, and the mesh size is 0.2~0.3 micrometers. Using stainless steel as the material for the filter screen improves its structural strength. By setting the mesh size to 0.2~0.3 micrometers, it effectively prevents tiny particles such as hair from entering the machine, resulting in excellent filtration.

[0019] Preferably, the fan module includes a fan installed inside the duct body with a buffer rubber ring fitted on its outer side. The outer wall of the fan is connected to the inner wall of the duct body via the buffer rubber ring. The connection between the fan and the inner wall of the duct body via the buffer rubber ring provides cushioning and shock absorption for the high-speed rotating fan, reducing fan noise.

[0020] The beneficial effects of this utility model are: it reduces wind noise at the air inlet of the air duct; it protects the internal components and improves the service life of the blower; it increases the wind speed; it improves the structural strength of the filter screen; it has a good filtration effect; and it reduces fan noise. Attached Figure Description

[0021] Figure 1This is a perspective view of the present invention;

[0022] Figure 2 This is a partial sectional view of the present invention;

[0023] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0024] In the diagram: 1. Air duct body, 2. Air inlet, 3. Guide plate, 4. Guide hole, 5. Transition rounded corner, 6. Filter support cover, 7. Filter screen, 8. Blower body, 9. Air inlet cover, 10. Guide cone, 11. Fan, 12. Buffer rubber ring. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 1-3 In the embodiments described above, the air intake structure of a rear-intake blower includes:

[0027] Air duct body 1;

[0028] Several air inlets 2 are provided at the air inlet end of the air duct body 1 and located on the side wall of the air duct body 1;

[0029] The fan module is located between the air inlet end and the air outlet end of the air duct body 1.

[0030] The air guide plate 3 is disposed inside the air duct body 1 and located between the fan module and the air inlet 2;

[0031] Several guide holes 4 are provided on the guide plate 3;

[0032] The transition fillet 5 is set at the ports at both ends of the guide hole 4.

[0033] The air inlet end of the air duct body 1 is also equipped with a filter support cover 6. The filter support cover 6 is fitted onto the air inlet end of the air duct body 1. A filter screen 7 that matches the air inlet 2 is installed on the filter support cover 6. The filter screen 7 is located on the outside of the air inlet 2.

[0034] It also includes a hair dryer body 8, an air duct body 1 installed inside the hair dryer body 8, and an air inlet mesh cover 9 that matches the filter mesh bracket cover 6 installed on the hair dryer body 8. The air inlet mesh cover 9 and the hair dryer body 8 are snapped together. The filter mesh bracket cover 6 is located inside the air inlet mesh cover 9, and the mesh aperture on the air inlet mesh cover 9 is larger than the mesh aperture on the filter mesh 7.

[0035] Inside the air duct body 1, there is a guide cone 10, with the tip of the guide cone 10 facing the fan module, and the air inlet 2 located on the outside of the guide cone 10.

[0036] The filter screen 7 is made of stainless steel, and the mesh size of the filter screen 7 is 0.25 micrometers.

[0037] The fan module includes a fan 11, which is installed inside the air duct body 1 and has a buffer rubber ring 12 fitted on its outer side. The outer wall of the fan 11 is connected to the inner wall of the air duct body 1 through the buffer rubber ring 12.

[0038] During operation, the fan module runs, and the airflow passes through the air inlet screen and filter screen in sequence under negative pressure before being drawn into the air duct body through the air inlet. The airflow entering the air duct body is guided by the guide cone and then rectified and reduced in noise by the guide holes on the guide plate. The transition rounded corners on the guide holes can transition the airflow, making the airflow smoother when entering and exiting the guide holes, greatly reducing the wind noise at the air inlet end of the air duct body.

Claims

1. An air intake structure for a rear-intake blower, characterized in that, include: Air duct body (1); Several air inlets (2) are provided at the air inlet end of the air duct body (1) and located on the side wall of the air duct body (1); A fan module is disposed between the air inlet end and the air outlet end of the air duct body (1); The guide plate (3) is disposed inside the air duct body (1) and located between the fan module and the air inlet (2); Several guide holes (4) are provided on the guide plate (3); Transition fillet (5) is set at the ports at both ends of the guide hole (4).

2. The air intake structure of a rear-intake blower according to claim 1, characterized in that, The air inlet end of the air duct body (1) is also equipped with a filter support cover (6). The filter support cover (6) is sleeved on the air inlet end of the air duct body (1). The filter support cover (6) is equipped with a filter sheet (7) that matches the air inlet (2). The filter sheet (7) is located on the outside of the air inlet (2).

3. The air intake structure of a rear-intake blower according to claim 2, characterized in that, It also includes a blower body (8), the air duct body (1) is installed on the inside of the blower body (8), the blower body (8) is equipped with an air inlet screen cover (9) that matches the filter support cover (6), the air inlet screen cover (9) and the blower body (8) are snapped together, the filter support cover (6) is located inside the air inlet screen cover (9), and the mesh aperture on the air inlet screen cover (9) is larger than the mesh aperture on the filter screen (7).

4. The air intake structure of a rear-intake blower according to any one of claims 1-3, characterized in that, The air duct body (1) has a guide cone (10) fixed inside, the tip of the guide cone (10) is facing the fan module, and the air inlet (2) is located on the outside of the guide cone (10).

5. The air intake structure of a rear-intake blower according to any one of claims 2-3, characterized in that, The filter mesh (7) is made of stainless steel and the mesh size of the filter mesh (7) is 0.2~0.3 micrometers.

6. The air intake structure of a rear-intake blower according to any one of claims 1-3, characterized in that, The fan module includes a fan (11), which is installed inside the air duct body (1) and has a buffer rubber ring (12) fitted on its outer side. The outer wall of the fan (11) is connected to the inner wall of the air duct body (1) through the buffer rubber ring (12).

Images