Photocatalytic disinfection lamp

Abstract

The utility model discloses a photocatalysis disinfection lamp, particularly relates to disinfection sterilization equipment technical field, including lamp, first photocatalysis coating and second photocatalysis coating, lamp includes lamp shade, the outer side wall of lamp shade is fixedly paved with first photocatalysis coating, the outside of first photocatalysis coating is fixedly paved with second photocatalysis coating, and the lamp shade is fixedly paved with second photocatalysis coating. The first photocatalytic coating is made of titanium dioxide, and the second photocatalytic coating is made of carbon nitride or copper. According to the utility model, the photocatalytic performance can be improved, the harm to a human body is reduced, and the integration of illumination and disinfection is realized.

Description

Technical Field

[0001] This utility model relates to the field of disinfection and sterilization equipment technology, and in particular to a photocatalytic disinfection lamp. Background Technology

[0002] Indoor air pollution refers to the phenomenon where the concentration of harmful substances in indoor air exceeds normal standards due to various reasons, which has an adverse effect on human health and indoor environmental quality.

[0003] Photocatalytic disinfection devices utilize photocatalytic technology for air disinfection. When light shines on a photocatalytic material, the resulting strong oxidizing agents destroy the structure of bacteria and viruses, killing microorganisms. This technology can be used for disinfection and sterilization in medical devices, food processing equipment, and public places. Currently, the most common photocatalytic material is titanium dioxide (TiO2). As a low-cost, non-toxic, and chemically stable semiconductor material, TiO2 exhibits significant photocatalytic activity. However, TiO2 suffers from serious limitations, including a large band gap, poor visible light absorption, high electron-hole recombination rate, and low photogenerated charge separation / migration. Combining TiO2 with other narrow-bandgap visible light active semiconductors to form heterojunctions has become an excellent strategy for improving photocatalytic performance. Utility Model Content

[0004] The purpose of this invention is to provide a photocatalytic disinfection lamp to solve the problems existing in the prior art, improve photocatalytic performance, reduce harm to the human body, and achieve integrated illumination and disinfection.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides a photocatalytic disinfection lamp, including a lamp, a first photocatalytic coating and a second photocatalytic coating. The lamp includes a lampshade, on which the first photocatalytic coating is fixedly laid on the outer side wall. The second photocatalytic coating is fixedly laid on the outside of the first photocatalytic coating. The material of the first photocatalytic coating is titanium dioxide, and the material of the second photocatalytic coating is carbon nitride or copper.

[0007] Preferably, the lamp further includes a lighting lamp and a circuit board. The lampshade includes a lampshade body and a lampshade base. The lampshade body is detachably mounted on the lampshade base. The lighting lamp and the circuit board are both placed inside the lampshade body and fixedly connected to the lampshade base. The lighting lamp is electrically connected to the circuit board. The first photocatalytic coating is fixedly laid on the outer wall of the lampshade body.

[0008] Preferably, the lighting lamp is an LED lamp.

[0009] Preferably, the lampshade body is made of transparent material.

[0010] Preferably, the light transmittance of the lampshade body is 60%-90%.

[0011] Preferably, the light transmittance of the lampshade body after the first photocatalytic coating and the second photocatalytic coating are applied is 60%-80%.

[0012] Preferably, it also includes a control switch, which is electrically connected to the main circuit board and is capable of controlling the lighting to turn on and off.

[0013] Preferably, it also includes an infrared sensor, which is electrically connected to the main circuit board. The infrared sensor can detect whether there is a heat source in the range, thereby controlling the lighting to turn on and off.

[0014] The present invention achieves the following technical advantages over the prior art:

[0015] This invention provides a photocatalytic disinfection lamp. When powered on, the lamp stimulates the outer photocatalytic coating, causing photocatalytic degradation and disinfection of the air. This integrates indoor air purification and disinfection with lighting, and can be widely used in enclosed areas with poor air circulation, such as bathrooms. The titanium dioxide (TiO2) layer and carbon nitride (g-C3N4) layer fixedly laid on the outer wall of the lampshade form a titanium dioxide / carbon-nitrogen heterojunction (TiO2 / g-C3N4). Under visible light irradiation, this layer generates electron-hole pairs, exhibiting strong oxidizing properties, leading to the removal of pollutants. The mineralization of pollutants is used to achieve photocatalytic disinfection. The TiO2 / g-C3N4(TGCN) heterojunction has high surface reactivity, which expands the light absorption range of the coupled photocatalyst, thus facilitating the photocatalytic reaction and improving the catalytic effect. For the absorption of indoor formaldehyde (HCHO), a Cu / TiO2 photocatalytic material group is formed by fixing a titanium dioxide (TiO2) layer and a copper (Cu) layer on the outer wall of the lampshade. Under visible light irradiation, HCHO is first oxidized to dioxymethylene (DOM), and then DOM is converted into formate. The Cu / TiO2 catalyst can convert 100% of HCHO into CO2 within 140 minutes, exhibiting higher performance in the photocatalytic oxidation of HCHO. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0017] Figure 1An exploded view of a photocatalytic disinfection lamp;

[0018] Figure 2 A cross-sectional view of a photocatalytic disinfection lamp;

[0019] Figure 3 for Figure 2 Enlarged view of part A in the middle.

[0020] In the diagram: 1-Lampshade body; 2-Lampshade base; 3-Lighting lamp; 4-Circuit main board; 5-First photocatalytic coating; 6-Second photocatalytic coating; 7-Infrared sensor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] The purpose of this invention is to provide a photocatalytic disinfection lamp to solve the problems existing in the prior art, improve photocatalytic performance, reduce harm to the human body, and achieve integrated illumination and disinfection.

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] This utility model provides a photocatalytic disinfection lamp, such as Figure 1-3As shown, the system includes a lamp, a first photocatalytic coating 5, and a second photocatalytic coating 6. The lamp includes a lampshade, on the outer wall of which the first photocatalytic coating 5 is fixedly laid. The second photocatalytic coating 6 is fixedly laid on the outside of the first photocatalytic coating 5. The first photocatalytic coating 5 is made of titanium dioxide, and the second photocatalytic coating 6 is made of carbon nitride or copper. When powered on, the lamp 3 irradiates and stimulates the outer photocatalytic coating, causing photocatalytic degradation and disinfection of the air. This integrates indoor air purification and disinfection with lighting, and can be widely used in enclosed areas with poor air circulation, such as bathrooms. The outer wall of the lampshade is fixedly coated with a titanium dioxide (TiO2) layer and a carbon nitride (g-C3N4) layer, forming a titanium dioxide / carbon nitride heterojunction (TiO2 / g-C3N4). Carbon nitride (g-C3N4) is a promising metal-free, low-coating photocatalyst. Compared with TiO2, g-C3N4 exhibits significant visible light absorption in the 400-460 nm range and demonstrates higher thermal and chemical stability in both acidic and alkaline media. The sufficiently high energy difference between the conduction and valence bands of titanium dioxide and the carbon nitride heterojunction largely suppresses the recombination of holes and electrons from the light source, thus effectively separating charge carriers. The narrow bandgap of g-C3N4 facilitates the utilization of light in the visible light region and acts as a sensitizer for TiO2. The combination of the UV activity of TiO2 and the visible light response of g-C3N4 expands the light absorption range of the coupled photocatalytic material, improves catalytic efficiency, and enables indoor air cleaning, antibacterial, deodorization, and VOCs removal without producing harmful byproducts. Simultaneously, lighting and catalytic disinfection are performed, resulting in high efficiency and energy saving. The outer wall of the lampshade is fixedly covered with a titanium dioxide (TiO2) layer and a copper (Cu) layer, forming a Cu / TiO2 photocatalytic material assembly. Under visible light irradiation, HCHO is first oxidized to dioxymethylene (DOM), and then DOM is converted to formate. The Cu / TiO2 catalyst can convert 100% of HCHO to CO2 within 140 minutes, exhibiting superior photocatalytic oxidation performance of HCHO. The material of the second photocatalytic coating 6 is selected according to different disinfection purposes. The combination of the first photocatalytic coating 5 and the second photocatalytic coating 6 improves catalytic efficiency, achieving efficient and energy-saving catalytic disinfection without producing toxic byproducts.

[0025] In a further preferred embodiment of this utility model, the lamp also includes a lighting lamp 3 and a circuit board 4. The lamp cover includes a lamp cover body 1 and a lamp cover base 2. The lamp cover body 1 is detachably installed on the lamp cover base 2. The lighting lamp 3 and the circuit board 4 are both placed inside the lamp cover body 1 and are fixedly connected to the lamp cover base 2. The lighting lamp 3 is electrically connected to the circuit board 4. A first photocatalytic coating 5 is fixedly laid on the outer wall of the lamp cover body 1.

[0026] In a further preferred embodiment of this utility model, the lighting lamp 3 is an LED lamp, which has high luminous efficiency, is energy-saving and environmentally friendly, and has a long service life.

[0027] In a further preferred embodiment of this utility model, the lampshade body 1 is made of transparent material, which has good light transmittance, ensuring the illumination and catalytic effect of the light.

[0028] In a further preferred embodiment of this utility model, the light transmittance of the lampshade body 1 is 60%-90%, and the light transmittance after the first photocatalytic coating 5 and the second photocatalytic coating 6 are applied to the lampshade body 1 is 60%-80%. The coating thickness of the first photocatalytic coating 5 and the second photocatalytic coating 6 has little impact on the light transmittance of the lampshade body 1, thus ensuring the lighting effect.

[0029] In a further preferred embodiment of this invention, the photocatalytic disinfection lamp also includes a control switch, which is electrically connected to the main circuit board 4. The control switch can control the lighting and extinguishing of the lamp 3. By manually operating the control switch, the disinfection time of the photocatalytic disinfection lamp can be controlled according to the disinfection requirements to achieve the disinfection purpose.

[0030] In a further preferred embodiment of this utility model, the photocatalytic disinfection lamp also includes an infrared sensor 7, which is electrically connected to the main circuit board 4. The infrared sensor 7 can detect the presence of a heat source within the designated area, thereby controlling the lighting 3 to turn on and off. When the infrared sensor detects someone approaching, the lighting 3 is turned on; when the sensor detects that the person has left and is far away, the lighting 3 is turned off. This achieves the effect of turning on when someone approaches and turning off when they leave, reducing energy consumption. The infrared sensor 7 is placed inside the lampshade body 1, so it does not interfere with the normal transmission of light, ensuring the lighting effect and uniformity of light distribution.

[0031] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A photocatalytic disinfection luminaire, characterized by: The lamp comprises a lamp cover, a first photocatalytic coating and a second photocatalytic coating, the outer sidewall of the lamp cover is fixedly laid with the first photocatalytic coating, the outer first photocatalytic coating is fixedly laid with the second photocatalytic coating, the material of the first photocatalytic coating is titanium dioxide, and the material of the second photocatalytic coating is carbon nitride or copper.

2. The photocatalytic disinfection luminaire of claim 1, wherein: The lamp further comprises a lighting lamp and a circuit mainboard, the lamp cover comprises a lamp cover body and a lamp cover seat, the lamp cover body is detachably installed on the lamp cover seat, the lighting lamp and the circuit mainboard are both arranged in the lamp cover body and fixedly connected with the lamp cover seat, the lighting lamp is electrically connected with the circuit mainboard, and the outer sidewall of the lamp cover body is fixedly laid with the first photocatalytic coating.

3. The photocatalytic disinfection luminaire of claim 2, wherein: The lighting lamp is an LED lamp.

4. The photocatalytic disinfection luminaire of claim 2, wherein: The lamp cover body is of transparent material.

5. The photocatalytic disinfection luminaire of claim 4, wherein: The light transmittance of the lamp cover body is 60%-90%.

6. The photocatalytic disinfection luminaire of claim 5, wherein: The light transmittance of the lamp cover body after the first photocatalytic coating and the second photocatalytic coating are laid thereon is 60%-80%.

7. The photocatalytic disinfection luminaire of claim 2, wherein: The lamp further comprises a control switch, the control switch is electrically connected with the circuit mainboard, and the control switch can control the lighting and extinguishing of the lighting lamp.

8. The photocatalytic disinfection luminaire of claim 2, wherein: The lamp further comprises an infrared sensor, the infrared sensor is electrically connected with the circuit mainboard, and the infrared sensor can detect whether a heat source exists in a detection range, thereby controlling the lighting and extinguishing of the lighting lamp.

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