Plasma photocatalytic dual-mode sterilization bladeless fan

Abstract

This utility model discloses a bladeless fan with dual-mode sterilization via plasma and photocatalysis, comprising a bladeless fan head and a base. The bladeless fan head contains a cavity communicating with an airfoil-shaped guide duct. The base contains an air inlet channel communicating with the cavity, and an air inlet communicating with the air inlet channel is located at the end of the base furthest from the bladeless fan head. A fan, an impeller, and a plasma generator are arranged sequentially from top to bottom within the air inlet channel. The inner wall of the cavity is covered with a photocatalytic coating, and a ring-shaped UV-A lamp strip is embedded on the surface of the inner wall. The emitting surface of the UV-A lamp strip faces the photocatalytic coating. This utility model achieves primary sterilization by placing a plasma generator within the air inlet channel of the base; simultaneously, the photocatalytic coating on the inner wall of the bladeless fan head, combined with the hidden ring-shaped UV-A lamp strip, excites the photocatalytic coating to generate secondary sterilization, without the risk of ultraviolet leakage, achieving safe and efficient dual sterilization.

Description

Technical Field

[0001] This utility model relates to the field of bladeless fan technology, and in particular to a bladeless fan with plasma photocatalytic dual-mode sterilization. Background Technology

[0002] Existing bladeless fan sterilization solutions suffer from the following problems due to structural limitations:

[0003] 1. The ultraviolet sterilization module is located on the inner side of the top of the fan head, which can only disinfect part of the airflow, and the ultraviolet light is directly exposed;

[0004] 2. It has limited sterilization effect on the ambient air generated during air outlet.

[0005] Therefore, there is an urgent need to provide a safe and efficient bladeless fan that achieves dual sterilization through the synergistic effect of plasma and photocatalysis. Utility Model Content

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0007] A bladeless fan with plasma photocatalytic dual-mode sterilization, characterized in that it includes a bladeless fan head and a base;

[0008] The bladeless fan head is provided with a cavity that communicates with the airfoil-shaped air guide duct.

[0009] The base is provided with an air inlet channel communicating with the cavity, and the end of the base away from the bladeless fan head is provided with an air inlet communicating with the air inlet channel.

[0010] The air inlet channel is equipped with a fan, an impeller and a plasma generator from top to bottom;

[0011] The inner wall of the cavity is covered with a photocatalytic coating, and the surface of the inner wall of the cavity is embedded with a ring-shaped UV-A lamp strip;

[0012] The luminescent surface of the UV-A lamp strip faces the photocatalytic coating.

[0013] Preferably, the plasma generator is located 5-10cm in front of the air inlet of the fan, and the operating voltage is 3-5kV.

[0014] Preferably, the photocatalytic coating is a titanium dioxide-graphene composite material with a thickness of 50-100 nm.

[0015] Preferably, the surface of the UV-A lamp strip is covered with a frosted PC cover with a light transmittance of 60-80%.

[0016] Preferably, the back of the UV-A lamp strip is coated with a reflective aluminum film.

[0017] Preferably, it also includes a human infrared sensor disposed on the bladeless fan head or base;

[0018] The human infrared sensor is electrically connected to the UV-A lamp.

[0019] Preferably, the bladeless fan head includes a detachably connected outer shell and an inner shell.

[0020] Preferably, the air inlet is a grid structure located around the outer perimeter of the base.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] 1. Achieve safe and efficient dual sterilization through the synergistic effect of plasma and photocatalysis.

[0023] 2. Through the structural design of embedded UV-A light strip, atomized PC cover and reflective aluminum film, the 365nm light wave is 100% confined inside the air duct, achieving zero ultraviolet leakage and greatly improving safety. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is the front view of the present invention;

[0026] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the middle AA section;

[0027] Figure 4 for Figure 3 Enlarged view of a portion of point B in the middle;

[0028] The components include: bladeless fan head 1, base 2, fan 3, impeller 4, plasma generator 5, UV-A light strip 6, bracket 7, atomizing PC cover 8, reflective aluminum film 9, air inlet channel 10, human infrared sensor 20, cavity 30, airfoil guide duct 1a, outer shell 11, inner shell 12, and air inlet 21. Detailed Implementation

[0029] 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.

[0030] 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. The terms "vertical," "horizontal," "left," "right," "up," "down," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0031] 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. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0033] like Figure 1-4 As shown, a bladeless fan with plasma photocatalytic dual-mode sterilization includes a bladeless fan head 1 and a base 2.

[0034] The bladeless fan head 1 is provided with a cavity 30 connected by an airfoil-shaped air guide duct 1a;

[0035] The base 2 is provided with an air inlet channel 10 communicating with the cavity 30, and the end of the base 2 away from the bladeless fan head 1 is provided with an air inlet 21 communicating with the air inlet channel 10.

[0036] The air inlet channel 10 is provided with a fan 3, an impeller 4 and a plasma generator 5 arranged from top to bottom;

[0037] The inner wall of the cavity 30 is covered with a photocatalytic coating (not shown in the figure), and the inner wall surface of the cavity 30 is embedded with an annular UV-A lamp strip 6;

[0038] The luminescent surface of the UV-A lamp strip 6 faces the photocatalytic coating.

[0039] In this embodiment, during operation, the primary ionization sterilization stage is as follows: when air enters the air intake channel 10 of the base 2 through the air inlet 21, the plasma generator 5 applies a high voltage of 3-5kV to ionize the air molecules and generate a high concentration of positive and negative ion clusters; the generated ion clusters penetrate the cell membrane of microorganisms and destroy their DNA / RNA structure, thereby achieving primary sterilization.

[0040] Secondary photocatalytic decomposition stage: Preliminarily purified air enters the cavity 30 of the bladeless fan head 1 through the air inlet channel 10. At this time, the annular UV-A lamp strip 6 emits 365nm ultraviolet light, exciting the photocatalytic coating on the inner wall; then the photocatalytic reaction produces hydroxyl radicals and superoxide ions (O2). - It thoroughly decomposes residual organic matter and achieves non-contact sterilization through indirect catalysis, thereby achieving highly efficient air purification.

[0041] In this embodiment, since the annular UV-A lamp strip 6 is built into the cavity 30, zero ultraviolet leakage is achieved, thus improving safety.

[0042] In this embodiment, the fan 3 is connected to the base 2 via the bracket 7, and the impeller 4 is connected to the drive end of the fan 3.

[0043] Furthermore, such as Figure 3 As shown, in order to improve the ionization effect of the incoming air and enhance the sterilization effect, the plasma generator 5 is located 5-10cm in front of the air inlet 21 of the fan 3, and the operating voltage is 3-5kV.

[0044] In this embodiment, the current of the plasma generator 5 is limited to 0.5mA, the ozone output is <0.01ppm, and it complies with the GB / T 18801-2022 standard.

[0045] Furthermore, to enhance the ultraviolet sterilization effect, the photocatalytic coating is a titanium dioxide-graphene composite material with a thickness of 50-100 nm.

[0046] Furthermore, such as Figure 3 , 4 As shown, in order to uniformly irradiate the inner wall of the cavity 30 with ultraviolet light and improve the sterilization coverage, the surface of the UV-A lamp strip 6 is covered with a misting PC cover 8 with a light transmittance of 60-80%.

[0047] Furthermore, such as Figure 3 , 4 As shown, in order to improve the utilization rate of ultraviolet light energy and ensure that ultraviolet light acts 100% on the air flow area, the back of the UV-A lamp strip 6 is coated with a reflective aluminum film 9.

[0048] Furthermore, such as Figure 1 As shown, to enhance safety, it also includes a human infrared sensor 20 installed on the bladeless fan head 1 or the base 2;

[0049] The human infrared sensor 20 is electrically connected to the UV-A lamp strip 6.

[0050] The human infrared sensor 20 monitors in real time and automatically turns off the UV-A light strip 6 when someone is within 1 meter.

[0051] Furthermore, such as Figure 3 As shown, the bladeless fan head 1 includes a detachably connected outer shell 11 and an inner shell 12.

[0052] Furthermore, such as Figure 1 As shown, the air inlet 21 is a grid structure located around the outer perimeter of the base 2.

[0053] Example 1: Production Assembly Process

[0054] 1. Base 2 processing: A slot (not shown in the figure) is opened on the side wall of the air inlet channel 10 of the ABS injection molded base 2 to fix the plasma generator 5.

[0055] 2. Bladeless fan head 1 treatment: The inner wall of the PC material cavity 30 is plasma cleaned; then TiO2-graphene composite coating with a thickness of 80nm is deposited by magnetron sputtering process; during injection molding, an annular light guide groove (groove depth 0.8mm) is pre-embedded, and after embedding a flexible UV-LED light strip, it is covered with an atomized PC cover 8.

[0056] 3. Circuit control: The human infrared sensor 20 is placed at the front end of the bladeless fan head 1;

[0057] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this utility model patent.

Claims

1. A bladeless fan with plasma-photocatalytic dual-mode sterilization, characterized in that, Includes bladeless fan head and base; The bladeless fan head is provided with a cavity that communicates with the airfoil-shaped guide duct. The base is provided with an air inlet channel communicating with the cavity, and the end of the base away from the bladeless fan head is provided with an air inlet communicating with the air inlet channel. The air inlet channel is equipped with a fan, an impeller and a plasma generator from top to bottom; The inner wall of the cavity is covered with a photocatalytic coating, and the surface of the inner wall of the cavity is embedded with a ring-shaped UV-A lamp strip; The luminescent surface of the UV-A lamp strip faces the photocatalytic coating.

2. The bladeless fan with plasma photocatalytic dual-mode sterilization according to claim 1, characterized in that, The plasma generator is located 5-10cm in front of the fan inlet and operates at a voltage of 3-5kV.

3. The bladeless fan with plasma photocatalytic dual-mode sterilization according to claim 1, characterized in that, The photocatalytic coating is a titanium dioxide-graphene composite material with a thickness of 50-100 nm.

4. The bladeless fan with plasma photocatalytic dual-mode sterilization according to claim 1, characterized in that, The UV-A lamp strip surface is covered with a frosted PC cover with a light transmittance of 60-80%.

5. A bladeless fan with plasma photocatalytic dual-mode sterilization according to claim 4, characterized in that, The back of the UV-A light strip is coated with a reflective aluminum film.

6. The bladeless fan with plasma photocatalytic dual-mode sterilization according to claim 1, characterized in that, It also includes a human infrared sensor installed on the bladeless fan head or base; The human infrared sensor is electrically connected to the UV-A lamp.

7. A bladeless fan with plasma photocatalytic dual-mode sterilization according to claim 1, characterized in that, The bladeless fan head includes a detachably connected outer shell and an inner shell.

8. A bladeless fan with plasma photocatalytic dual-mode sterilization according to claim 1, characterized in that, The air inlet is a grid structure located around the outer perimeter of the base.

Images