CN205323423U - Air purifying device - Google Patents

Abstract

The utility model discloses an air purification device, which comprises a preprocessor, a low-temperature plasma generating component and an exhaust gas processor, which are sequentially arranged from bottom to top to form a cylindrical structure; the preprocessor is used to treat suspended particles, floating dust and PM2. 5 to purify and let the air pass through; the low-temperature plasma generation component uses a hexagonal tubular generator for dielectric barrier discharge purification to save space, increase the intake air volume, and improve air purification efficiency; The air purified by the edge-shaped tubular generator is treated with tail gas to remove the by-product ozone during dielectric barrier discharge purification, so as to further improve the air purification efficiency. The low-temperature plasma generation components do not need to be replaced, and only the pretreatment membrane and exhaust gas treatment membrane need to be replaced for long-term use, which can greatly save maintenance costs in the later period, and is especially suitable for indoor air purification needs. It not only improves the purification efficiency, but also saves the use cost and space for the user.

Description

an air purification device

technical field

The utility model relates to the technical field of air purification, in particular to an indoor air purification device using low-temperature plasma technology.

Background technique

With the improvement of living standards, people's pursuit of better life experience is gradually revealed. However, most of the current mainstream air purifier structures use a simple adsorption principle to purify the air. It is necessary to replace the filter device regularly to ensure the purifying ability of the purifier. This type of purifier has a simple structure and a limited removal range. It requires money and manpower for maintenance and fails to perform comprehensive and effective cleaning of many harmful components in the air. Similarly, because the removal principle of the existing low-temperature plasma air purifier does not include the removal principle of chemical reaction, there is no major breakthrough in the removal efficiency and range. The existing purifiers have gradually been unable to meet people's needs for air purification in the new environment.

Contents of the invention

The utility model provides an air purification device, aiming at solving the problem that the existing purifiers have insufficient purification range and purification efficiency due to simple principles such as single filtration.

In order to achieve the above purpose, the utility model provides an air purification device, which is characterized in that it includes a preprocessor, a low-temperature plasma generating component, and an exhaust gas processor, which are arranged sequentially from bottom to top to form a cylindrical structure;

The preprocessor is used to purify suspended particles, floating dust and PM2.5, and let the air pass through; the low-temperature plasma generation component uses a hexagonal tubular generator for dielectric barrier discharge purification to save space and increase air intake. Improve the efficiency of air purification; the exhaust processor is used to treat the air purified by the hexagonal tubular generator to remove the by-product ozone during dielectric barrier discharge purification, so as to further improve the air purification efficiency.

As an improvement of the above technical solution, the preprocessor includes an air inlet, an activated carbon filter and a HEPA filter arranged sequentially from the outside to the inside; wherein, the air inlet is a bottom annular air inlet design, and the activated carbon filter is a preliminary The filter device surrounds the inside of the air inlet, and initially absorbs suspended particles, floating dust and PM2.5 in the air through activated carbon; the HEPA filter is surrounded in parallel with the activated carbon filter to achieve the purpose of filtering the gas entering the air inlet .

As a further improvement of the above-mentioned technical solution, the low-temperature plasma generating assembly includes an air duct and a hexagonal tubular generator; Smoothly enter the hexagonal tube generator for further processing; the hexagonal tube generator is a hexagonal tube array, a generator with quartz glass as the medium, and the air to be purified flows through the medium through the middle gap The blocking discharge form is purified.

As a further improvement of the above technical solution, the exhaust processor includes an air duct, an ozone filter and a fan; wherein, the air duct is a structure with a narrow bottom and a wide top to ensure that the air further purified by the generator can completely pass through the ozone filter screen; the air duct is close to the top of the hexagonal tubular generator; the ozone filter screen is placed horizontally on the top of the air duct, so that the purified gas directly and comprehensively contacts the ozone filter screen and enters the fan, and the The fan is placed horizontally on the top of the ozone filter to realize the air intake mode of bottom and top suction.

The structure of an air purification device provided by the utility model can meet the requirements of a wide range and high efficiency in the process of purifying indoor air through the multi-step processing scheme involved. The air purification device adopts a customized voltage The power supply greatly reduces the power supply cost. At the same time, the low-temperature plasma technology is adopted to improve the safety of the product. The DBD (dielectric barrier discharge) discharge form reduces the conditions for low-temperature plasma generation and improves the air purification efficiency of low-temperature plasma. Simultaneously, the low-temperature plasma generating assembly of the core part of the air purification device does not need to be replaced, and only the pretreatment membrane (i.e. activated carbon filter screen and HEPA filter screen) and tail gas treatment membrane (i.e. ozone filter screen) need to be replaced for long-term use. It can greatly save the later maintenance cost. The air purification device adopting this structural scheme is especially suitable for indoor air purification requirements. The air purification device with this structure not only improves the purification efficiency, but also saves the use cost for the user.

Description of drawings

Fig. 1 is the overall structural representation of the air cleaning device provided by the utility model;

Fig. 2 is the structural representation of preprocessor;

Fig. 3 is the structural representation of generator;

Fig. 4 is the structural representation of hexagonal tubular structure generator;

Fig. 5 is a structural schematic diagram of the exhaust gas processor.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail. According to the following description and claims, the advantages and features of the utility model will be more clear. It should be noted that all the drawings are in a very simplified form and use imprecise ratios, which are only used to facilitate and clearly illustrate the purpose of the embodiment of the present utility model.

In order to expand the purification range and functions of the air purification device, as shown in Figure 1, the air purification device provided by the utility model example includes a preprocessor 10, a low-temperature plasma generation assembly 20, and an exhaust gas processor 30, which are sequentially from bottom to top Arranged to form a cylindrical structure, wherein the preprocessor 10 can pass through the air, but has a good purification effect on suspended particles, floating dust and PM2.5.

The way of pumping in and out from the bottom makes the indoor air pass through the above three components in turn from the bottom to the top, and finally achieves the effect of air purification.

The specific structure and function of each part of the air cleaning device of the present utility model are described in detail as follows:

As shown in FIG. 2 , the preprocessor 10 includes an air inlet 11 , an activated carbon filter 12 and a HEPA filter 13 arranged sequentially from outside to inside at the bottom of the air purification device of the present invention. Among them, the air inlet 11 is a bottom annular air inlet design, and the specific air inlet part refers to the entire annular area at the bottom of the purifier shell to achieve the largest area of air inlet, and the design of the lower air inlet also ensures less harmful substances. Heavy air for maximum purification. The activated carbon filter 12 is a preliminary filter device, which surrounds the inside of the air inlet, and initially absorbs suspended particles, floating dust and PM2.5 in the air through activated carbon. The HEPA filter 13 surrounds the activated carbon filter 12 in parallel to achieve the purpose of filtering all the gas entering the air inlet. The filter screen that meets the HEPA standard has an effective purification rate of 99.7% for 0.1-0.3 microns.

The preprocessor 10 is characterized in that air can pass through, but has a good purification effect on suspended particles, floating dust and PM2.5.

As shown in FIG. 3 , the low-temperature plasma generation assembly 20 is placed on the top of the preprocessor 10 , and includes an air duct 21 and a hexagonal tubular generator 22 . The air duct 21 has a wide bottom and a narrow top structure, so as to ensure that the air preliminarily purified by the preprocessor enters the hexagonal tubular generator 22 completely and smoothly for further processing.

As shown in FIG. 4 , the hexagonal tubular generator 22 includes a ventilation tube 1 , a positive pole terminal 2 , a positioning plug 3 , a copper rod 4 , a generator cavity 5 and a metal mesh 6 .

Wherein the generator cavity 5 is an array formed by a plurality of regular hexagonal tubes made of quartz glass or corundum material arranged vertically and side by side, and the specific number is selected by the air flow. A copper rod 4 having the same shape as the regular hexagonal tube is placed in each regular hexagonal tube, and each copper rod 4 is fixed by a positioning plug 3 to ensure the sealing in the tube. The through hole of the trachea 1.

The metal mesh 6 is a fine mesh made of stainless steel, copper or silver. The metal mesh 6 is tightly wrapped on the outer surface of the generator cavity 5 for grounding treatment to ensure the normal discharge, and at the same time play a role in fixing the quartz glass tube .

When working, the metal mesh 6 is connected to the negative pole of the high-voltage power supply through an external high-voltage wire 7, and the positive terminal 2 of each copper rod 4 is drawn in parallel and then connected with a high-voltage wire to connect the positive pole of the high-voltage power supply. The connection method of the copper rod and the high-voltage power supply can be as follows: The utility model does not limit the specific connection methods such as winding, multi-strand aggregation, etc. The air to be purified flows through the intermediate gap and is purified in the form of dielectric barrier discharge.

The low-temperature plasma generation component 20 uses the DBD discharge method to generate low-temperature plasma, and introduces the low-temperature plasma technology into household indoors, which can efficiently remove harmful gases such as CH ₃ CHO, NO _x , SO ₂ that are difficult to remove by general air purification devices in the market . The high cost of the high-voltage power supply required for DBD discharge is one of the main reasons that hinder the indoor use of low-temperature plasma technology. Therefore, the introduction of module power supply realizes the conversion of household voltage to the required high voltage and ensures the safety of equipment. And the hexagonal tubular generator 22 is used to save space to the greatest extent, increase the intake air volume, and improve the air purification efficiency.

As shown in FIG. 5 , the exhaust processor 30 includes an air duct 31 , an ozone filter 32 and a fan 33 . Wherein, the air duct 31 is a structure with a narrow bottom and a wide top, so as to ensure that the air further purified by the generator passes through the ozone filter 32 completely. The air duct 31 is close to the top of the hexagonal tubular generator 22 . The ozone filter screen 32 is horizontally placed on the top of the air duct 31, so that the purified gas directly and comprehensively contacts the ozone filter screen 32 and enters the blower fan 33. The blower fan 33 is horizontally placed on the top of the ozone filter screen 32, so as to realize the air intake mode of downward intake and upward intake. The parameter selection of the fan air intake volume can be selected according to the indoor area, and the specific parameters are not limited by the present invention.

The function of the exhaust gas processor 30 is to perform exhaust gas treatment on the air purified by the hexagonal tubular generator 22 . Air purification by DBD discharge will produce ozone as a by-product, and the neglect of removing by-product ozone is one of the main reasons for blocking low-temperature plasma technology from being used indoors. Preferably, the tail gas processor 30 uses a reticular ozone removal net. The aperture of the net should be a small value without affecting the gas flow. At the same time, a certain amount of activated carbon should be attached to the net, and the specific attachment amount depends on the removal area. .

In a word, the air purification device provided by the utility model includes a preprocessor, a low-temperature plasma generation component and an exhaust gas processor, and different air purification modules are formulated according to different pollutants and characteristics of indoor air purification. It can realize the removal of PM2.5 by ordinary household air purifiers, and also remove harmful gases such as CH ₃ CHO, NO _x , SO ₂ that are difficult to remove, and realize the function expansion and removal range expansion of air purifiers .

Obviously, those skilled in the art can invent and carry out various changes and modifications without departing from the spirit and scope of the present utility model, any equivalent structure or equivalent flow conversion made by using the specification and drawings of the utility model, or directly Or indirectly used in other relevant technical fields, all are included in the patent protection scope of the present utility model in the same way.

Claims (5)

1. an air cleaning device is characterized in that it comprises a preprocessor (10) for purifying suspended particles, floating dust and PM2.5, a low-temperature plasma generating assembly (20) for carrying out dielectric barrier discharge purification ), and the tail gas treater (30) used to remove the by-product ozone during dielectric barrier discharge purification, the preconditioner (10), the low-temperature plasma generation assembly (20) and the tail gas treater (30) from bottom to top The arrangement constitutes a cylindrical structure, wherein the low-temperature plasma generation component (20) adopts a hexagonal tubular generator. 2. The air cleaning device according to claim 1, characterized in that, the preprocessor (10) comprises an air inlet (11), an active carbon filter (12) and a HEPA filter ( 13); wherein, the air inlet (11) is a bottom annular air inlet design, and the activated carbon filter (12) is a preliminary filter device, which surrounds the inside of the air inlet; the HEPA filter (13) is parallel to the activated carbon filter Inside the filter (12). 3. The air cleaning device according to claim 1, characterized in that, the low-temperature plasma generating assembly (20) comprises an air duct (21), a hexagonal tubular generator (22); the air duct (21) It is a narrow structure with a wide bottom and a narrow top; the hexagonal tube generator (22) is a hexagonal tube array, and is a generator with quartz glass as the medium. 4. The air cleaning device according to claim 3, characterized in that, the hexagonal tubular generator (22) comprises a ventilation pipe (1), a positive terminal (2), a positioning plug (3), a copper rod ( 4), generator cavity (5) and metal mesh (6); Wherein the generator cavity (5) is an array formed by a plurality of regular hexagonal tubes made of quartz glass or corundum material arranged vertically and side by side, and each regular hexagonal tube is placed with a copper rods (4), each copper rod (4) is fixed by a positioning plug (3), and the seal inside the tube is guaranteed, and each positioning plug (3) is provided with a through hole for installing the ventilation pipe (1) ; The metal mesh (6) is a fine mesh made of stainless steel, copper or silver, and the metal mesh (6) is tightly wrapped on the outer surface of the generator cavity (5) for grounding treatment; When working, the metal mesh (6) is connected to the negative pole of the high-voltage power supply through an external high-voltage electric wire (7), and each copper rod is connected to the positive pole of the high-voltage power supply through the positive terminal (2). 5. according to any described air cleaning device in claim 1 to 4, it is characterized in that, described tail gas processor (30) comprises air channel (31), ozone filter screen (32) and blower fan (33); Wherein , the air duct (31) is a lower narrow upper wide structure; the air duct (31) is close to the top of the hexagonal tubular generator (22); the ozone filter screen (32) is placed horizontally in the air duct ( 31) top, described blower fan (33) is placed on the top of ozone filter screen (32) horizontally.