RU24634U1 - DEVICE FOR CLEANING AND IONIZATION OF AIR - Google Patents

Abstract

1. A device for cleaning and ionizing air, consisting of an aerosol pre-filter of the incoming air stream, corona discharge generator, electrostatic filter, fan and needle ionizer, characterized in that after the electrostatic precipitator additionally contains an ozone decomposition catalyst and an ozonation product absorber. 2. A device for purification and ionization of air according to claim 1, characterized in that the ozone decomposition catalyst is made in the form of a bulk mesh with a thickness of 10-60 mm with an average mesh size of 1-10 mm, a conditional density of 20-200 kg / min of metal wire with a diameter of 0, 1-0.8 mm coated with an oxide and / or hydroxide of a metal selected from the group: iron, manganese, copper, nickel, palladium.

Description

Device for cleaning and ionizing air

The utility model relates to the field of technical means for cleaning, disinfecting, sterilizing and deodorizing air using physical phenomena, in particular electrostatic filtration and ionization, using catalytic and sorbing materials. The utility model can be used: for purification of air in household, medical and industrial premises from fine dust, microscopic fungi, for biocidal air treatment, removal of unpleasant odors, tobacco smoke, detoxification of harmful organic substances that are products of human metabolism or stand out from modern building decoration materials in its habitat. A device for air purification in a dual-zone electrostatic precipitator, including a zone with a corona discharge, a zone of treatment with ozone, incidentally formed in the corona discharge, an electrostatic filtration zone and a carbon filter to absorb excess ozone and toxic gases 1.

The device allows you to catch household aerosols with an efficiency of 91-98% and purify the air of carbon oxides and nitrogen. A disadvantage of the known device is the high level of noise resulting from pumping air through a layer of carbon granules of an ozone absorber and toxic gases, which has significant aerodynamic drag and the need for periodic replacement.

The technical problem that this model aims to solve is to reduce the noise level and intensify the detoxification process of harmful organic substances by ozone without exceeding the maximum permissible concentration of residual ozone in the stream of purified gas.

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ionizer, according to the proposed model, on top of the electrostatic precipitator, an ozone decomposition catalyst and an ozonation product scavenger are further installed.

The ozone decomposition catalyst is made in the form of a bulk mesh with a thickness of 10-60 mm with an average mesh size of 1-10 mm, a conditional density of 20-200 kg / m from a metal wire with a diameter of 0.1 - 0.8 mm, coated with metal oxide and / or hydroxide . The ozonation product absorber is made in the form of a breathable cylinder or disk of non-woven mat with a thickness of 10-100 mm, containing chemisorption fibers with basic properties. Resistance to the air flow of the decomposition catalyst of ozone and an absorber of ozonation products can be 30 - 300 Pa depending on their thickness and fan power.

The cleaner device is shown in figure 1. In the case of the cleaner 1 are sequentially placed: a pre-filter for the incoming air flow, a corona discharge generator, an electrostatic filter, an ozone decomposition catalyst, an ozonation product absorber, a fan and a needle ionizer. The pre-filter of the incoming air stream 2 is made in the form of a removable cartridge based on a filter cloth ФР022 П95У, subject to periodic replacement. It collects particles with a diameter of 0.4 μm and more with an efficiency of 90%. The electrostatic filter is a two-zone electrostatic precipitator containing a corona discharge generator and a precipitator with a retractable precipitating plate 3 to be periodically washed. The absorber of ozonation products 4 is made in the form of a hollow cylinder made of breathable non-woven mat. The ozone decomposition catalyst 8 is made in the form of a disk from a three-dimensional network coated with a catalyst - metal oxide. Air sequentially passes through a coarse filter, an electrostatic precipitator, then is sucked through the surface of a cylindrical absorber of ozonation products and through an ozone decomposition catalyst

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ejected by the fan 5, located on the base of the cylinder out through the side grill 6. The outgoing air stream washes the needles of the ionizer 9 and is saturated with negative ions.

An electronics unit 7 is located in the housing. At the bottom of the housing there are openings for air intake. On the side wall 1, through which the cleaned air comes out, there are control keys 2, an LED for indicating operation 3, and a) an LED for connecting to the network 4.

The device operates as follows. To be properly cleaned, the air through the openings 10 in the housing 1 is pre-filtered with a fibrous aerosol filter 2 and enters the corona discharge zone of the electrostatic precipitator 11. Here, dust particles and aggregates of impurity molecules capture ions and receive an electric charge, while partial conversion can occur in the corona plasma vapor of ecotoxicants in aerosols and the required amount of ozone is generated. In the area of electrostatic deposition of the filter 12 is the deposition of solid and liquid particles from aerosols on the electrode 3, as well as sanitation of air with ozone, the destruction of microbial flora. The excess ozone necessary for the biocidal treatment of air and the oxidation of organic ecotoxicant impurities decomposes on the catalytic network 8 with the formation of oxygen. Molecules of substances that have not been precipitated

by an electrostatic precipitator, but as a result of ozone oxidation reactions they have acquired acidic properties, they are retained by the absorber of ozonation products with a final filter of chemisorption fibers 4. After complex cleaning, the air is saturated with the air ions generated by the needle ionizer 9 and leaves the room through a grate on the side wall of the housing.

Figure 2 shows the values of the instantaneous concentrations of ozone contained in the stream of purified air at different points of the lattice on the side wall of the device. A - without installing an ozone decomposition catalyst. B - after installing the ozone decomposition catalyst in the form of a grid 50 mm thick.

Sources of information

Claims (2)

1. A device for cleaning and ionizing air, consisting of an aerosol pre-filter of the incoming air stream, corona discharge generator, electrostatic filter, fan and needle ionizer, characterized in that after the electrostatic precipitator additionally contains an ozone decomposition catalyst and an ozonation product absorber. 2. The device for purification and ionization of air according to claim 1, characterized in that the ozone decomposition catalyst is made in the form of a bulk mesh with a thickness of 10-60 mm with an average mesh size of 1-10 mm, a conditional density of 20-200 kg / m ³ of metal a wire with a diameter of 0.1-0.8 mm coated with an oxide and / or hydroxide of a metal selected from the group: iron, manganese, copper, nickel, palladium.