CN203837120U - Microwave ultraviolet titanium dioxide photocatalyst air fresher - Google Patents

Abstract

A microwave ultraviolet titanium dioxide photocatalyst air fresh air device, which includes a housing with a ventilation chamber and a clean air chamber, and the housing is provided with an indoor air return port, an electric air outlet, an electric air inlet and a fresh air outlet; There is a communication port between the ventilation chamber and the clean air chamber, and a return air fan and a clean air fan are respectively installed in the ventilation chamber and the clean air chamber, and a microwave ultraviolet generator is also installed in the clean air chamber; With the closed electric baffle, a photocatalyst reactor is arranged outside the microwave ultraviolet generator, and a plurality of reaction sheets are arranged in the photocatalyst reactor, and the surface of the reaction sheet is coated with nano-scale titanium dioxide. The utility model can adopt two modes of internal circulation and external circulation, and can decompose hydrocarbons, benzene, formaldehyde, sulfide, ammonia in the air by using microwave ultraviolet light as a photocatalyst of titanium dioxide, and the suspended particles below PM2.5 can also be decomposed Carry out decomposition and adsorption to achieve the effect of air purification, which is beneficial to health.

Description

Microwave ultraviolet titanium dioxide photocatalyst air fresh air device

technical field

The utility model relates to a purifying device for filtering, sterilizing and disinfecting air, in particular to an air purifying device for using microwave ultraviolet rays to photocatalyze titanium dioxide.

Background technique

As the number of smog days continues to increase every year, the areas where smog occurs continue to spread, and the problem of environmental pollution has attracted more and more attention. People can only wear masks to prevent dust outdoors, and they need a mask that can effectively purify indoors. The air device gives people a small world where they can breathe pure air. At present, the fresh air systems on the market basically use simple internal circulation to purify indoor air, or simple external circulation to introduce internal and external air for purification. These two methods have disadvantages. If the inner circulation is used for a long time, it will cause excessive carbon dioxide and lack of oxygen, while the purification effect of the outer circulation will be greatly reduced in haze weather. Moreover, these fresh air systems only do some simple air filtration technically, and do not decompose and adsorb the main pollutants in the air such as hydrocarbons, benzene, formaldehyde, sulfide, ammonia, and suspended particles below PM2.5. The patent No. "2009200457308" disclosed by the Chinese Patent Office on February 17, 2010 is "a fresh air air handling unit", which includes a compressor, an evaporator, and the evaporator is provided with an air supply port. An ultraviolet photocatalytic device is arranged in the evaporator before the air supply port, and an oxygen-enriched membrane module is arranged above the ultraviolet photocatalytic device and the air supply port, and the oxygen-enriched membrane module is communicated with the air outlet pipe of the compressor; the ultraviolet photocatalytic device is composed of It is composed of ultraviolet lamp tube, photocatalyst and light shielding cover. The ultraviolet lamp tube is installed in the light shielding cover, and the photocatalyst is placed in the light shielding cover; Several wind outlet windows are arranged on the leeward surface. This kind of device simply uses external circulation, and in addition, it directly uses ordinary ultraviolet lamps, the light intensity is not enough, and the photocatalytic effect is almost non-existent.　

Contents of the invention

The purpose of this utility model is to address the defects and deficiencies of the above-mentioned prior art, to provide people with a choice of two modes of internal circulation and external circulation, and can decompose hydrocarbons, benzene, formaldehyde, sulfide, ammonia in the air, An air fresh air device that can also decompose and adsorb suspended particles below PM2.5.

In order to achieve the above purpose, the technical solution adopted by the utility model is: the microwave ultraviolet titanium dioxide photocatalyst air fresh air device, which includes a housing with a ventilation cavity and a clean air cavity, and one end of the ventilation cavity is provided with an indoor return There is a connection port between one end of the ventilation cavity and the clean air cavity, and a return air fan is installed in the ventilation cavity. Fan and microwave ultraviolet generator; the ventilation cavity is provided with an electric air outlet and an electric air inlet, and an electric baffle is set in the ventilation cavity, and when the electric baffle rotates to the inner wall of the ventilation cavity, it can separate the ventilation cavity It is an indoor air chamber and a fresh air chamber, and a photocatalyst reactor is arranged outside the microwave ultraviolet generator, and a plurality of reaction sheets are arranged in the photocatalyst reactor, and nano-scale titanium dioxide is plated on the surface of the reaction sheet.

Part of the reaction sheet is fixed to the top of the photocatalyst reactor, and the rest is fixed to the bottom of the photocatalyst reactor, and the two are arranged alternately.

The reaction sheet is perpendicular to the airflow direction in the clean air cavity.

An air overflow port is opened above the photocatalyst reactor, and the upper end of the air overflow port protrudes from the casing.

The bottom of the photocatalyst reactor is provided with a drain pipe, and the bottom of the drain pipe protrudes from the casing.

The communication port is located between the new air chamber and the clean air chamber.

A filter and an activated carbon adsorber are arranged in the communication port.

The utility model can select two modes of inner circulation which directly purifies the indoor air and inner circulation which discharges the indoor air and introduces new outdoor air for purification through the setting of the electric air outlet, the electric air inlet and the electric baffle. In the clean air chamber, microwave ultraviolet rays are used to photocatalyze titanium dioxide. Titanium dioxide absorbs photoexcited electrons to generate photogenerated carriers, absorbs oxygen and water to generate hydroxyl radicals and superoxide anion radicals, and can decompose hydrocarbons and benzene in the air. , formaldehyde, sulfide, ammonia, and suspended particles below PM2.5 can also be decomposed and adsorbed, which can mineralize and degrade environmental pollutants and inhibit bacteria and kill bacteria, which is beneficial to health.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Detailed ways

As shown in Figure 1, the utility model is a microwave ultraviolet titanium dioxide photocatalyst air fresh air device, which includes a housing 16 with a ventilation chamber 16.2 and a clean air chamber 16.1, and one end of the ventilation chamber 16.2 is provided with an indoor return The air port 8 is provided with a communication port between one end of the ventilation chamber 16.2 and the clean air chamber 16.1, and a return air blower 7 is installed in the ventilation chamber 16.2. The indoor mixed air can be sucked into the ventilation cavity 16.2 when the return air blower 7 works. The fresh air outlet 1 is provided at the end of the clean air chamber 16.1 away from the communication port, and a clean air fan 6 is installed in the clean air chamber 16.1, and the fresh air outlet 1 can discharge the air into the room after the air is purified in the clean air chamber 16.1.

The ventilation chamber 16.2 is provided with an electric air outlet 11 and an electric air inlet 12, and an electric baffle 13 is arranged in the ventilation chamber 16.2. When the electric baffle 13 rotates to the inner wall of the ventilation chamber 16.2, it can separate the ventilation chamber 16.2. It is an indoor air chamber and a fresh air chamber, and the communication port is located between the fresh air chamber and the clean air chamber 16.1. Therefore, when the electric baffle 13 is opened, and the electric air outlet 11 and the electric air inlet 12 are closed, the indoor turbid air can directly enter from the indoor air return port 8, pass through the ventilation chamber 16.2, reach the clean air chamber 16.1, and then flow from the fresh air outlet 1 to the room to achieve internal circulation. When the electric baffle 13 and the ventilation chamber 16.2 are closed, and the electric air outlet 11 and the electric air inlet 12 are opened, the indoor turbid air will be discharged from the electric air outlet 11; 12 is inhaled, and after being purified by the clean air chamber 16.1, it is discharged into the room from the fresh air outlet 1 to realize external circulation. The device can switch between these two modes at will according to needs.

The communicating port is provided with a filter 10 and an activated carbon adsorber 9, which can preliminarily filter the air entering the air purification chamber to remove large particles of impurities in the air, and the activated carbon adsorber 9 can also absorb some toxic gases and odors. .

A microwave ultraviolet generator 2 is installed in the air-cleaning chamber, and the microwave ultraviolet generator 2 selects two modes of a continuous ultraviolet generator and a pulsed ultraviolet generator. A photocatalyst reactor 3 is arranged outside the microwave ultraviolet generator 2, and a plurality of reaction sheets 4 are arranged in the photocatalyst reactor 3, and the surface of the reaction sheet 4 is coated with nanoscale titanium dioxide. The microwave ultraviolet generator 2 itself has the effect of disinfection and sterilization, and it can also act as a photocatalyst for titanium dioxide 5. Titanium dioxide 5 absorbs photoexcited electrons, generates photogenerated carriers, and absorbs oxygen and moisture to generate hydroxyl radicals and superoxide anion free radicals. base, can decompose hydrocarbons, benzene, formaldehyde, sulfide, ammonia in the air, and suspended particles below PM2.5 can also be decomposed and adsorbed, which plays a role in mineralizing and degrading environmental pollutants and further inhibiting and sterilizing bacteria. The reaction piece 4 is perpendicular to the airflow direction in the clean air chamber 16.1, and part of the reaction piece 4 is fixed to the top of the photocatalyst reactor 3, and the rest is fixed to the bottom of the photocatalyst reactor 3, and the two are arranged alternately. In this way, the air flow needs to go up and down several times to pass through the photocatalyst reactor 3, prolong the contact time between the air and the reaction sheet 4 and the microwave ultraviolet generator 2, and make the effect of purifying the air better. When hydroxyl radicals and superoxide anion radicals decompose hydrocarbons, benzene, formaldehyde, sulfides, and ammonia in the air, hydrogen and water will be produced, so it is necessary to have an overflow port 15 above the photocatalyst reactor 3. The upper end of the overflow port 15 stretches out of the housing 16 to discharge hydrogen. A drain pipe 14 is arranged at the bottom of the photocatalyst reactor 3, and the bottom of the drain pipe 14 protrudes from the casing 16 for draining water.

In the utility model, through the setting of the electric air outlet 11, the electric air inlet 12 and the electric baffle 13, the inner circulation for directly purifying the indoor air and the inner circulation for purifying the indoor air and introducing new outdoor air can be selected. mode. In the clean air chamber 16.1, microwave ultraviolet rays are used to photocatalyze titanium dioxide 5, titanium dioxide 5 absorbs photoexcited electrons, generates photogenerated carriers, absorbs oxygen and moisture to generate hydroxyl radicals and superoxide anion radicals, and can decompose hydrocarbons in the air Benzene, benzene, formaldehyde, sulfide, ammonia, and suspended particles below PM2.5 can also be decomposed and adsorbed, which plays a role in mineralizing and degrading environmental pollutants and inhibiting bacteria and sterilization, which is beneficial to health.

Claims (7)

1. A microwave ultraviolet titanium dioxide photocatalyst air fresh air device, which includes a housing (16) with a ventilation cavity (16.2) and a clean air cavity (16.1), one end of the ventilation cavity (16.2) is provided with an indoor return Air port (8), a communication port is provided between one end of the ventilation chamber (16.2) and the clean air chamber (16.1), and a return air fan (7) is installed in the ventilation chamber (16.2), and the clean air chamber (16.1) There is a fresh air outlet (1) at the end away from the communication port, and a clean air fan (6) and a microwave ultraviolet generator (2) are installed in the clean air chamber (16.1); There is an electric air outlet (11) and an electric air inlet (12), and an electric baffle (13) is set in the ventilation cavity (16.2). When the electric baffle (13) rotates to the inner wall of the ventilation cavity (16.2), it can The ventilation cavity (16.2) is divided into an indoor air cavity and a fresh air cavity, a photocatalyst reactor (3) is arranged outside the microwave ultraviolet generator (2), and a plurality of reaction sheets are arranged on the photocatalyst reactor (3) (4), nanoscale titanium dioxide (5) is coated on the surface of the reaction sheet (4). 2. The microwave ultraviolet titanium dioxide photocatalyst air fresh air device according to claim 1, characterized in that part of the reaction sheet (4) is fixed to the top of the photocatalyst reactor (3), and the rest is fixed to the photocatalyst reactor (3). The bottom of the reactor (3) is fixed, and the two are arranged alternately. 3. The microwave ultraviolet titanium dioxide photocatalyst air fresh air device according to claim 1 or 2, characterized in that the reaction piece (4) is perpendicular to the airflow direction in the clean air chamber (16.1). 4. The microwave ultraviolet titanium dioxide photocatalyst air fresh air device according to claim 1 or 2, characterized in that an overflow port (15) is opened above the photocatalyst reactor (3), and the overflow port (15) The upper end stretches out of the housing (16). 5. The microwave ultraviolet titanium dioxide photocatalyst air fresh air device according to claim 1 or 2, characterized in that the bottom of the photocatalyst reactor (3) is provided with a drain pipe (14), and the drain pipe (14) The bottom protrudes from the housing (16). 6. The microwave ultraviolet titanium dioxide photocatalyst air fresh air device according to claim 1 or 2, characterized in that the communication port is located between the fresh air chamber and the clean air chamber (16.1). 7. The microwave ultraviolet titanium dioxide photocatalyst air fresh air device according to claim 6, characterized in that a filter (10) and an activated carbon adsorber (9) are arranged in the communication port.