RU2492394C2 - Device for air ventilation - Google Patents

Abstract

FIELD: ventilation.

SUBSTANCE: device comprises discharge electrodes which are arranged between the receiving electrodes in sequence in one plane parallel to the receiving electrodes at the same distance from them. At that, only one side of the discharge electrode is discharge in the direction of the air flow, and the receiving electrodes are made in the form of solid plates between which the discharge electrodes are located. At that, the distance between the electrodes is selected according to the formula 1.5≤L/H≤3.5, wherein L is the distance between the discharge electrodes, H is the distance from the discharge electrode to the receiving one.

EFFECT: reducing the size of the device, increasing the flow rate of gas, and reducing the concentration of ozone.

2 cl, 2 dwg

Description

The invention relates to systems for purging and purifying air from dust, bacterial and chemical contaminants in industrial premises.

A device for cleaning air from dust and aerosols, including a housing with a channel for the passage of air, inside of which are installed corona and precipitation electrodes, deflecting electrodes, the electrode is a generator of negative ions, as well as a means for aromatic or medicinal substances [Patent RU No. 2182850 C1 " A device for cleaning air from dust and aerosols ", Kotlyar GM, Sysoev IV, publ. May 27, 2002].

The disadvantages of this device are the design complexity, the presence of several supply voltages and a low air flow rate.

A known fan is an ozonizer, including a housing, inside which there are several rows of plate electrodes made in an aerodynamically profiled form with attached tip emitters [Patent RU No. 2111115 C1 “Fan-ozonator”, Nikolaev GV, Novikov GN, publ. . 10/27/1998].

The disadvantages of this device are the complexity of the design of the electrodes and the low speed of the air flow.

The closest in technical essence and the achieved effect is a device for increasing the speed of an electric wind, in which both corona and precipitation electrons create a corona discharge in the direction of gas flow. Moreover, they are offset relative to each other in vertical and horizontal planes [Patent RU No. 2313732 C2 “Method for increasing the speed of electric wind and a device for its implementation” Vereshchagin NM, Shemarin KV, publ. 02/13/2006].

The disadvantages of this device are large dimensions and a large concentration of ozone.

The main technical result of the invention is to increase the gas flow rate, reduce the size of the device and reduce the concentration of ozone.

The technical result is achieved by the fact that in a device for air ventilation containing precipitation (1) and corona (2) electrodes located parallel to the gas flow, corona electrodes (2) are installed between the precipitation electrodes (1) one after another in the same plane parallel to the precipitation electrodes at the same distance from them (Figure 1). In this case, only one side is the corona for each corona electrode (2) in the direction of the air flow (indicated by an arrow in FIG. 1), and the precipitation electrodes (1) are made in the form of continuous plates between which the corona electrodes are located. The distance between the electrodes is selected by the formula 1.5≤L / H≤3.5 where L is the distance between the corona electrodes, H is the distance from the corona electrode to the precipitation.

The operation of the device is as follows. One pole is connected to the precipitation electrodes (1), and the second pole of the power source is connected to the corona electrodes (2). An electric discharge is ignited on the corona side of the corona electrodes. The ions formed in the discharge begin to move towards the precipitation electrode (1). Since there is a component in the distribution of the electric field whose vector is parallel to the precipitation electrodes, due to this component of the electric field, the ions accelerate in the direction from the corona side of the electrode to the non-corona side of the next electrode and, colliding with gas molecules, create a gas flow along the precipitation electrodes ( one). Since only one side is corona for each corona electrode (2), in the direction of air flow, each corona electrode is involved in the formation of a directed gas flow. The more corona electrodes, the greater the power is introduced into the electric discharge and the greater the electrical energy is converted into kinetic energy of the directed motion of the gas molecules (Figure 2). Figure 2 shows the dependence of the speed (V) of the electric wind on the voltage (U) supplied to the electrodes for systems with one, two, three, and four corona electrodes. Figure 2 shows that with an increase in the number of corona electrodes, the air flow rate increases.

In the proposed design, due to the fact that the precipitation electrode is continuous, the number of corona electrodes can be set significantly larger compared to the prototype on the same length. And this allows you to get a higher air flow rate, or the same speed with a smaller device.

The device uses one type of crown. A negative corona provides a higher airflow rate and lower ozone concentration compared to a positive corona and prototype.

It was experimentally found that the speed (V) of the air flow depends on the distance between the corona electrodes (L), as well as on the distance from the corona electrode to the precipitation (H). As the ratio of the distance between the corona electrodes to the distance from the corona to the precipitation electrode (L / H) increases, the wind speed increases and then slowly decreases. Figure 3 shows the dependence of the speed (V) of the air flow on the L / H ratio for various voltages at the electrodes. From Figure 3 it is seen that the optimum lies in the range of 1.5 ≤ L / H 3 3.5.

Claims (2)

1. A device for air ventilation, containing corona and precipitation electrodes located parallel to the gas flow, connected to a high voltage source, characterized in that the precipitation electrodes are made in the form of continuous plates, between which the corona electrodes are installed one after another in the same plane parallel to the precipitation electrodes at the same distance from them, while only one side of the corona electrode is corona in the direction of air flow. 2. The device according to claim 1, characterized in that the distance between the electrodes is selected by the formula 1.5≤L / H≤3.5 where L is the distance between the corona electrodes, N is the distance from the corona electrode to the precipitation.

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