CN2838624Y - Air conditioner bus ultraviolet light catalyst sterilizing apparatus - Google Patents

Abstract

The utility model provides an ultraviolet photocatalyst disinfection device for an air-conditioned passenger car, which comprises a frame, a photocatalyst net and an ultraviolet lamp. The photocatalyst net is fixedly installed on an opening on the side of the frame, and the ultraviolet lamp is fixedly installed in the frame. The utility model is safe, convenient and effective, and the disinfection and sterilization speed is fast, and the products of the photocatalyst reaction are carbon dioxide, water and other harmless substances to the human body, and do not cause secondary pollution.

Description

An ultraviolet photocatalyst disinfection device for air-conditioned passenger cars

Technical field

The utility model relates to an ultraviolet disinfection technology for passenger cars, in particular to an ultraviolet photocatalyst disinfection device for air-conditioned passenger cars.

Background technique

Medical experts believe that since the compartment is a sealed space, the air pollution is much more serious than the general outdoor. Seats, ceilings, dashboards, carpets, floor mats, door panels, etc. in the car are mostly made of leather, plastic, rubber, and fiber, which can easily hide dirt after long-term use. Automobile air conditioners bring enjoyment and comfort to people, but also bring some hidden dangers, because automobile air conditioners will inhale a lot of dust and dirt, which will be adsorbed on the evaporator of the air conditioner. In a humid environment, a large number of bacteria, mites, etc. will breed, which is quite harmful to people's physical and mental health. People in this environment will feel dizzy, weak, and sick. After a long time, they will suffer from some respiratory diseases, or aggravate people's original illnesses, seriously endangering people's health; Bacteria can produce a strange smell that can make passengers feel uncomfortable.

For all kinds of bacteria and viruses, ordinary car washing can only remove a very small part of them, and deodorant sprays can only cover up the strange smell in the car, and have no effect on those germs, treating the symptoms but not the root cause. On the bus, due to the large passenger flow, these germs will breed in large numbers. Only by frequent disinfection and sterilization can a truly healthy interior space be obtained. The disinfection methods of the cabin air mainly include traditional high-temperature steam disinfection, chemical disinfection, ozone disinfection and ultraviolet disinfection. These disinfection methods are now compared.

The high-temperature steam disinfection method is a relatively traditional automobile air disinfection method. First, the vehicle is cleaned with a common detergent, and then the vehicle is sprayed with detergent and bactericide, and finally disinfected with high-temperature steam. However, this method is not recommended for car owners to use frequently, because it will have a certain impact on the aging of electrical instruments and plastic parts, and the effect of disinfection can only last for about a week.

The chemical disinfection method is to use chemical agents, such as mixing three to four times industrial ammonia water to wipe the interior or spraying some disinfectant and insecticides to clean and disinfect the car. This method is more thorough, but the operability is not strong, and Chemicals may remain in the vehicle, causing potential hazards.

Ozone disinfection is a method of disinfection using the air-conditioning circulation system in the car. Using a special disinfectant solution to enter the circulation system can remove the peculiar smell in the car and has a certain effect of disinfection and sterilization, especially for amines, nicotine bacteria, etc. . The effect of ozone disinfection is immediate, but it is difficult to eliminate viruses if it is carried out without anyone and lasts for less than a week.

Ultraviolet disinfection is to use ultraviolet light to irradiate the interior of the car. Ultraviolet rays can concentrate a high intensity to kill bacteria and viruses in a short period of time without secondary pollution, but the irradiation time cannot be too long, and it cannot be directly irradiated on the human body. effect.

Contents of invention

The purpose of the utility model is to overcome the shortcomings and deficiencies of the above-mentioned prior art, and to provide a vehicle that can safely, conveniently and effectively dynamically sterilize and purify the air in the compartment without passengers leaving during the operation process. Ultraviolet photocatalyst disinfection device for air-conditioned passenger cars.

The purpose of this utility model is achieved through the following scheme: the air-conditioned passenger car ultraviolet photocatalyst disinfection device includes a frame, a photocatalyst net, and an ultraviolet lamp. inside the frame.

The photocatalyst net is a filter screen with semiconductor photocatalytic material coating on the outer surface, and the semiconductor photocatalytic material is an oxide or sulfide semiconductor, including titanium dioxide (TiO2).

The wavelength of the ultraviolet light is 183-380nm, because the smaller the ultraviolet wavelength is, the greater the energy is, the higher the excitation efficiency of the photocatalyst is, but the less safe it is for the human body, so it is advisable to excite the photocatalyst.

The frame body is a long rectangular tube with unclosed ends, and its material includes aluminum alloy.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

(1) The disinfection and sterilization speed of the utility model is fast, and there is no dead angle;

(2) The utility model can make the vehicle carry out dynamic disinfection during the operation process without stopping and leaving the passenger, which is safe, convenient and effective;

(3) The utility model has no corrosion, no damage, and no interference to the instruments and equipment in the vehicle;

(4) The utility model has no ultraviolet leakage and will not cause harm to the human body;

(5) In the utility model, the product of the photocatalyst reaction carried out on the coating surface of the semiconductor photocatalyst material titanium dioxide of photocatalyst net is carbon dioxide and water and other harmless substances to human body, does not bring secondary pollution;

(6) The utility model has strong operability and can be disinfected at regular intervals according to user needs.

Description of drawings

Fig. 1 is the structural representation of a kind of ultraviolet photocatalyst sterilizer of the utility model;

Fig. 2 is the cross-sectional structure schematic diagram of a kind of ultraviolet photocatalyst sterilizer of the present utility model;

Fig. 3 is a working principle diagram of an ultraviolet photocatalyst sterilizer of the present invention.

Detailed ways

The utility model will be described in further detail below in conjunction with the embodiments and accompanying drawings, but the implementation of the utility model is not limited thereto.

Embodiment one

As shown in Figures 1 and 2, the ultraviolet photocatalyst disinfection device for air-conditioned passenger cars includes a frame body 1, a photocatalyst net 2, and an ultraviolet lamp 3. Installed in frame 1. The photocatalyst net 2 is a filter screen with a semiconductor photocatalytic material titanium dioxide coating on the outer surface, and the ultraviolet lamp 3 is four 15W ultraviolet antivirus lamps from Nanhai Huaxing Light Source Co., Ltd. (one wavelength is 183nm, and the remaining three wavelengths are 254nm) , the frame body 1 is a long rectangular tube with unclosed ends, and its material is aluminum alloy or the like.

The working process of this air-conditioned passenger car ultraviolet photocatalyst disinfection device is: as shown in Figure 3, this air-conditioned passenger car ultraviolet photocatalyst disinfection device is installed in the air supply slot 4 of the air-conditioning air supply system in the car, the air that is constantly circulated in the air supply slot 4 Enter from one end of the frame of this ultraviolet photocatalyst sterilizer, and leave from the other end, use ultraviolet light with a wavelength of 183-380nm to irradiate the air with ultraviolet rays, kill bacteria and viruses in the air, and at the same time irradiate the photocatalyst net with ultraviolet rays, through The photocatalyst reaction occurs on the surface of the semiconductor photocatalytic material titanium dioxide coating, which quickly decomposes most of the organic substances adsorbed on the photocatalyst net, degrades some inorganic substances, removes the peculiar smell in the compartment, and makes the air outlet of the air conditioner deliver air that meets environmental standards.

Effect and function of the present utility model are as follows:

(1) Bactericidal effect: before the device was turned on, the total number of bacterial colonies was 2.5×10 ² CFU/m ³ , and 60 minutes after the device was turned on, the total number of bacterial colonies was 16, and the extinction rate of bacteria reached 93.6%.

(2) Disinfection effect: The sterilization efficiency of ultraviolet rays (radiation intensity 30000uw/cm ² ) on common bacteria and viruses is shown in the table below. kill target time(S) kill target time(S) Bacteria Bacillus anthracis 0.3 mold spores Aspergillus niger 0.3 Clostridium tetani 0.3 Mucor 4.6 Shigella 1.5 Penicillium 0.93 Escherichia coli 0.4 Algae blue green algae 10.4 Staphylococcus 1.3 nematode eggs 3.4 Mycobacterium tuberculosis 0.4 Chlorella 1.2 Virus Bacillus virus 0.2 Protozoa 4.6 flu virus 0.3 fish disease Vitiligo 2.7 Poliovirus 0.8 infected necrosis 4.0 Hepatitis B virus 0.8 viral hemorrhagic disease 1.6

(3) Function of degrading organic matter: Test items Unopened device Starter for 1 hour (front of compartment) Start the device for one hour (rear of the compartment) Starter 2 hours (front compartment) Starter for 2 hours (rear compartment) Toluene concentration (mg/m ³ ) 1.20 0.165 0.101 0.0796 0.0596 Toluene removal rate (%) 86.3 91.6 93.4 95 Xylene concentration (mg/m ³ ) 1.06 0.421 0.285 0.181 0.116 Xylene removal rate (%) 60.3 73.1 82.1 89.1 Isooctanol concentration (mg/m ³ ) 0.189 0.0413 0.0461 0.0273 0.0278 Isooctyl alcohol removal rate (%) 78.1 75.6 85.5 85.3 1,1-diethoxyethane (mg/m ³ ) 0.591 0.420 0.459 0.293 0.399 1,1-diethoxyethane removal rate (%) 28.9 16.2 50.4 32.4

As above, the utility model can be better realized.

Claims (4)

1, a kind of air-conditioned passenger train ultraviolet ray photocatalyst decontaminating apparatus is characterized in that: comprise framework, photocatalyst net, Burdick lamp, described photocatalyst net is fixedly installed on the lateral opening of framework, and described Burdick lamp is fixedly installed in the framework.

2, by the described a kind of air-conditioned passenger train ultraviolet ray photocatalyst decontaminating apparatus of claim 2, it is characterized in that: described photocatalyst net is the filter screen that outer surface is provided with the conductor photocatalysis material coating, described conductor photocatalysis material is oxide or sulfide semiconductor, comprises titanium dioxide.

3, by the described a kind of air-conditioned passenger train ultraviolet ray photocatalyst decontaminating apparatus of claim 2, it is characterized in that: described Burdick lamp wavelength is 183～380nm.

4, by the described a kind of air-conditioned passenger train ultraviolet ray photocatalyst decontaminating apparatus of claim 2, it is characterized in that: described framework is the rectangle long tube that two ends are not sealed, and its material is for comprising aluminium alloy.

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