RU10851U1 - FAN IONIZER - Google Patents

Abstract

1. A fan-ionizer, containing a housing with an input and output of at least one electrode and a grid that form a non-uniform electric field, a high-voltage direct current source, each of the electrodes is connected to the negative pole of the said current source and is located in the housing on the side of the fan inlet -ionizer, each of the grids is connected to the positive pole of the mentioned current source and is located in the housing on the side of the exit from the fan-ionizer, characterized in that at least one of the electrodes is made in the form of a needle, the tip of each of the electrodes is located at a distance of (1, 2 ... 2.0) • S from the entrance to the housing and directed towards the grid, the first of the grids is removed from the tip of each of the electrodes at a distance (0.6 ... 1.3) • S towards the exit from the housing, where S - cross-sectional area of the housing at the location of the tip of the needle electrodes.2. Fan-ionizer according to item 1, characterized in that the body length varies within (3.2 ... 4.4) • S.3. Fan-ionizer according to claim 1 or 2, characterized in that the grid is flat. Fan-ionizer according to claim 1 or 2, characterized in that the mesh is made spherical with a sphere radius (0.7 ... 1.1) • S.5. Fan-ionizer according to claims 1 to 4, characterized in that the housing is made with a cylindrical surface of the inner channel. Fan-ionizer according to claims 1 - 4, characterized in that the entrance to the housing is made in the form of a confuser, the ratio of the end area of which to the cross-sectional area at the location of the electrode tip varies in the range (1.1 ... 2.8) • S, and the length of the confuser is (0.1 ... 0.7) • S.7. Fan-ionizer according to claim 6, characterized in that the inner surface

Description

FAN-IZHOZZATOR

The utility model relates to the field of fan building, and finally, to ionizing fans, and can be used in rooms, in particular, which are subject to environmental cleanliness requirements.

 Prior art ionizing fans are designed to ensure environmental cleanliness of the premises.

So, from the USSR copyright certificate 684256, IPC F24F 3/16, publ. 09/05/79, 1, a fan-ionizer is known, comprising a housing with an input and output of at least one electrode and a grid forming an inhomogeneous electric field, a high-voltage regulated DC source, each of the electrodes of the fan-ionizer is connected to the negative pole of the aforementioned a current source, and each of the grids is connected to the positive pole of said current source. A disadvantage of the invention is the use of a fan to create an air flow, which leads to complexity of the design and increased energy consumption.

In the patent of the Russian Federation 2005962, MF F24F 3/16, publ. 01/15/94, C2, a fan-ionizer is presented, comprising a housing with an input and an output of at least one electrode and a grid forming an inhomogeneous electric field, a high-voltage regulated constant current source, each of the electrodes is connected to the negative pole of the current source and located in

BETWEEN 6 F24F 3/16 AH 3/08 AH 3/32

the housing from the inlet side of the fan-ionizer, each of the grids is connected to the positive pole of the current source and is located in the housing from the outlet side of the fan-ionizer.

The disadvantage of the fan-ionizer according to patent C2, taken as the closest analogue, is the location of the electrodes on the inner surface of the housing, which reduces the mass flow rate and air velocity at the outlet of the fan-ionizer housing at the same power source due to the formation of a swirling, and therefore turbulent air flow.

Solved technical problem is to increase the mass flow rate and range of the air stream. The technical result consists in increasing the efficiency of using available energy by reducing aerodynamic losses during air movement.

The essence of the utility model is as follows.

Fan-ionizer, as in the closest analogue 23,. contains a housing with an input and output of at least one electrode and a grid forming an inhomogeneous electric field, a high-voltage direct current source, each of the electrodes is connected to the negative pole of the current source and is located in the housing on the input side of the fan-ionizer, each from the grids is connected to the positive pole of the aforementioned current source and is located in the housing on the outlet side of the fan-ionizer, but in contrast to the closest analogue 23, at least one of the electrodes in made in the form of a needle, the tip of which is located at a distance of (1.2 ... 2.0) S1 / Z from

the entrance to the housing and directed toward the mesh, the first of the mesh is removed from the tip of the electrodes by a distance of (0.6 ... 1.3) -AS172 towards the exit from the housing, where S is the cross-sectional area of the housing at the location of the needle electrode tip.

It is proposed to carry out an ionizer fan with a case length that varies within the limits of (3.2 ... 4.4) S1 / 2.

The ionizer fan is characterized in that at least one of the grids is flat or spherical, the radius of the spherical grid is (0.7 ... 1L) S1X2.

The ionizer fan is also characterized in that the casing is made with a cylindrical surface of the inner channel.

It is proposed to carry out the ionizer fan with the entrance to the case in the form of a confuser, the ratio of the input end face of the confuser to the cross-sectional area at the location of the needle electrode varies in the range (1.1 ... 1.7) S, and the length of the confuser is (0.1 ... 0.7) S1 / 2.

The inner surface of the housing from the confuser to the exit from the housing is proposed to be cylindrical.

The cylindrical surface of the inner channel of the housing in cross section has the form of a rectangle, circle and other geometric shapes.

It is proposed that the needle electrodes be arranged either parallel to the generatrix of the cylindrical surface of the inner channel of the housing, or a fan.

These signs are essential for solving the technical problem and achieving the specified technical result.

The implementation of the fan-ionizer, as in the closest

i analogue 23, containing a housing with input and output, at least

| at least one electrode and grid forming an inhomogeneous

; {electric field, high-voltage (adjustable or unregulated) DC source, connecting each of the electric IDOB to the negative pole of the current source and their placement in the housing from the input side of the fan-ionizer, sub.; the hatches of each grid to the positive pole of the said source current and their location in the housing from the exit side

fan-ionizer, provides the formation of heterogeneous. an electric field that generates a directed motion of electrons, ionizing and consequently involving in motion co; airborne gas molecules and substances.

The implementation of at least one of the electrodes in the housing

fan-ionizer, in contrast to the closest analogue j C23, in the form of a needle prevents swirling of the air flow, which.; reduces its turbulence, and at the same time increases its heterogeneity; the bone of the electric field, thereby providing, in comparison with the closest analogue of C2, conditions for increasing the mass flow rate and range of the ionized air stream at the same power expended by the high-voltage current source. Placing the tip of each electrode at a distance

(1.2 ... 2.0) S1 / 2 from the entrance to the housing, and the removal of the mesh from the tip

: needles at a distance of (0.5 .. .1.3) S1 / 2 towards the exit from the housing,: where S is the cross-sectional area of the housing at the location

the tip of the needle electrodes, provides maximum speed; movement of ionized air and ambient air injection

The length of the body, varying within (3.2 ... 4.4) S1 / 2, affects the formation of the core of the air stream and, therefore, its range.

The implementation of a flat or spherical grid with a sphere radius equal to (0.7 ... 1.1) S1 / 2 affects the parameters of the jet and the degree of ionization of the air due to changes in the unevenness of the electric field and, therefore, the efficiency of use of available energy.

The implementation of the housing of the fan-ionizer with a cylindrical surface of the inner channel when each needle electrode is placed in parallel to the generatrix of the cylindrical surface ensures a decrease in the unevenness of the electrostatic field of the body (and therefore the energy loss due to the interaction of emitted electrons and generated ions) with an increase in the manufacturability of manufacturing the fan-ionizer.

Entering the fan-ionizer body in the form of a confuor reduces the aerodynamic losses of the air flow, and the ratio of the area of the end face of the confuser to the cross-sectional area at the location of the electrode tip in the range (1.1 ... 1.7) S, and the length of the confuser in the range (0.1. ..0.7) S1 / 2 corresponds to the minimum loss.

The implementation of the inner surface of the housing from the confuser to the output end of the cylindrical helps to reduce the loss of available energy during the interaction of electric fields while increasing the manufacturability of the fan-ionizer.

The implementation of the cylindrical inner surface of the housing in cross section in the form of a rectangle, circle and other geometric shapes allows you to form an electric field with

known characteristics, which helps to reduce the cost of developing fan-ionizers with the required parameters.

The fan arrangement of the electrodes leads to an increase in the core of the air jet, which affects the performance and range of the fan-ionizer jet.

The utility model is illustrated by drawings.

Figure 1 shows a longitudinal section of a flat-mesh fan-ionizer.

Figure 2 shows a longitudinal section of a fan-ionizer with the entrance to the housing in the form of a confuser.

Fig. 3 shows a longitudinal section through a spherical mesh fan-ionizer.

Figure 4 shows a section 1-1 in figures 1 and 2 when performing the generatrix in the form of a rectangle.

Figure 5 - the same when forming in the form of a circle.

Figure 6 presents an example of a high-voltage current source of low power.

7 shows an example of a high-voltage current source of modular type.

The fan-ionizer is arranged as follows.

The ionizer fan comprises a housing 1 with an input 2 and an output 3, at least one needle electrode 4, at least one grid 5, a high-voltage (adjustable or non-adjustable) DC source 6, the negative pole of which 7 is connected to each needle electrode 4, and the positive pole 8 with each grid 5. The DC source b is located in

case 1 (figure 1). When the case 1 is made of an electrically conductive material, it must be grounded (not shown in Fig.), When the case 1 is made of a druller, grounding is optional.

Entrance 2 into the housing 1 can be performed in the form of a confuser 9 (Fig.2). The inner surface 10 of the housing 1 in the area from the outlet 3 to the end of the confuser 9, and in the absence of the confuser 9 to the inlet 2, can be made of either a cylindrical or another shape: conical, compression, etc. When the inner surface 10 is serrated, each of the electrodes 4 can be mixed in parallel with a cylinder generatrix or a fan, and the contour of the cross section can be in the form of a circle (Fig. 5), a rectangle (Fig. 4), a polygon, an ellipse (not shown in Fig.) And other geometric shapes. When performing the inner surface 10 with a different (not schischndric) form, the electrodes 4 can be parallel to the axis of symmetry of the surface or a fan.

The studies showed that the fan-ionizer with the following geometric parameters has the optimal characteristics in terms of efficient use of available energy, reduced to the square root of the area S of the contour of the inner surface 10 in cross section at the location of the tip of the electrodes:

- the tip of each needle electrode 4 is located at a distance (1.2 ... 2.0) S1 / 2 from the entrance 2 to the housing 1;

- the first grid 5 is removed from the tip of each of the electrodes 4 in the direction of exit 3 to a distance of (0.6 ... 1.3) S1 / 2, and when the grid is spherical, its radius is (0.7 ... 1.1) S1 / 2;

- end area and. gin of confuser 7 are respectively equal to (1.1 ... 1.7) S and (Q.1 ... 0.7) S1 / 2.

For small premises (up to 20 m3) it is possible to use a high-voltage current source 6 of low power (2 ... 3 W), which is a single-cycle self-generating voltage converter, which, as shown in Fig. 5, contains a network rectifier 11, a voltage converter high frequency 12 and a rectifier-multiplier 13 voltage, providing a constant voltage output. The frequency and duration of the pulse current in the Converter 12 is controlled by a variable resistor 14.

For medium-sized rooms (up to 100 m3), a high-voltage current source 6 of medium power (up to 50 W), made according to the modular principle, can be used. Such a current source 6, as shown in Fig. 7, contains a network rectifier 11, the driving generator 15, as well as one or more modules (depending on the required power of the high-voltage current source), consisting of a voltage converter of increased frequency 12 and a rectifier-multiplier 13 voltage. For rooms of large volumes or with a high concentration of pollution, high-voltage current sources of 6 large powers are required, in particular, made according to a half-bridge and bridge circuit (not shown in the figure).

In a preferred embodiment, the fan-ionizer with one needle electrode 4 and one grid 5 is made with a housing 1 with a confuser 9 with a cylindrical inner surface 10 with a base in the form of a circle, and with the above geometric parameters. With two needle electrodes 2, the housing is made without confueor 9, with a cylindrical inner surface 10

case 1 with the base in the form of a rectangle and with the specified geometric parameters. Depending on the required power, as high-voltage current sources 6, both those shown in Fig. 6,7 and those made according to other schemes can be used.

The fan-ionizer operates as follows.

When the current source b is turned on, a negative charge is supplied to each of the needle electrodes 4, and a positive charge is supplied to the grid 5. The potential difference on the electrodes 4 to the grid 5 forms an inhomogeneous electric field, the average intensity of which, equal to the ratio of the potential difference to the distance between the electrodes 4 and the near grid 5, should be 3 ... 25 kV / cm. At a mean free path, the electrons ionize the molecules of gas and other substances in the air, which accelerate as they approach the positively charged grid 5, creating an ejection effect. At the same time, negatively charged particles of solid and liquid substances in the air settle on the grid 5, providing air purification. In the presence of several grids 5, the degree of purification increases while maintaining the average intensity of the electrostatic field ... 25 kV / cm. As a result, air moves from inlet 2 to outlet 3. In the presence of two needle electrodes 4, the unevenness of the electric field increases, which contributes to a greater intensity of ion formation and an increase in the flow velocity at the same available power of the current source 6.

The implementation of the fan-ionizer with the geometric parameters presented above ensures a laminar flow (almost until the mesh reaches the air flow), characterized by minimal aerodynamic losses, and forms a stream that ejects the surrounding air, and the distance between the electrodes 4 and the mesh 5, providing an average electrostatic field strength. ..25 kV / cm is sufficient for ionization of gas molecules and substances entering the air. The execution of the inner surface 10 of the housing 1 is cylindrical with a contour in the form of known geometric figures at the base that allows to reduce the loss of available energy due to the interaction between the electrostatic charges on the walls of the housing 1 and the electric field created by the electrodes 4 and grids 5. The use of a flat or spherical grid 5 affects such parameters of the air stream, such as its range, ion concentration, speed and performance of the fan-ionizer.

The regulation of the high voltage output of the current source 6, examples of which are shown in Fig.6,7, is provided by changing the frequency and duration of the generated pulses by changing the input constant voltage at points 16 and 17, or by changing the constant supply voltage. When applying alternating current from the network at points 18 and 19 to the network rectifier 11, in addition to converting alternating current to constant at the output of the network rectifier, the network voltage decreases. At low power of the current source 6, a voltage converter 12 is sufficient (Fig. 5), which provides an increase in the frequency of the current and its transmission to the rectifier-multiplier 13 of the pulse voltage, which increases the output voltage at points 7.8 by 2 ... 6 times, up to 10 ... 30 kV. Regulation of the frequency and duration of the current pulse is provided by a variable resistor 14 in the voltage Converter high frequency 12.

- 10 With a larger output power of the current source 6, the master oscillator 14 (Fig. 7) provides an increase in the current frequency and generates a control pulse voltage, which is supplied to the modules, consisting of a voltage converter IS and rectifier-multipliers 13. Depending on the number of modules, the output increases the power of the current source is 6, and the voltage at points 7.8 reaches Ј5 ... 50 kV.

The implementation of current sources b according to the schemes shown in Fig. 6,7 allows you to change the average electrostatic field strength Еср in the range of 3 ... 25 kE / cm, which is better for such parameters of the ionizer as ion concentration and air velocity, ensuring the quality of cleaning and the performance of the fan-ionizer.

The presented fan-ionizer can be manufactured at any specialized enterprise, and the geometrical parameters listed will provide a solution to the technical problem and achieve the claimed technical result.

- 11 9 No.} 6-L

Claims (11)

1. A fan-ionizer comprising a housing with an input and output of at least one electrode and a grid forming an inhomogeneous electric field, a high-voltage direct current source, each of the electrodes is connected to the negative pole of the current source and is located in the housing from the fan inlet side -ionizer, each of the grids is connected to the positive pole of the aforementioned current source and is located in the housing from the outlet side of the fan-ionizer, characterized in that at least one of the electrode s made in the form of a needle, the tip of each of the electrodes is located at a distance of (1.2 ... 2.0) • S ^1/2 from the entrance to the housing and is directed towards the grid, the first of the grids is removed from the tip of each of the electrodes (0.6 ... 1.3) • S ^1/2 towards the exit from the housing, where S is the cross-sectional area of the housing at the location of the tip of the needle electrodes. 2. The fan-ionizer according to claim 1, characterized in that the length of the casing varies within (3.2 ... 4.4) • S ^1/2 .  3. The fan-ionizer according to claim 1 or 2, characterized in that the grid is made flat. 4. The fan-ionizer according to claim 1 or 2, characterized in that the grid is made spherical with a radius of the sphere (0.7 ... 1.1) • S ^1/2 .  5. The fan-ionizer according to claims 1 to 4, characterized in that the casing is made with a cylindrical surface of the inner channel. 6. The fan-ionizer according to claims 1 to 4, characterized in that the entrance to the housing is made in the form of a confuser, the ratio of the end face to the cross-sectional area at the location of the tip of the electrode varies in the range (1.1 ... 2.8 ) • S, and the length of the confuser is (0.1 ... 0.7) • S ^1/2 .  7. The fan-ionizer according to claim 6, characterized in that the inner surface of the housing from the confuser to the exit from the housing is cylindrical.  8. The fan-ionizer according to claim 5 or 7, characterized in that the inner channel of the housing in cross section has the form of a rectangle.  9. The fan-ionizer according to claim 5 or 7, characterized in that the inner channel of the housing in cross section has a circle shape.  10. The fan-ionizer according to claims 5, 7, 8 and 9, characterized in that each needle electrode is parallel to the generatrix of the cylindrical surface. 11. The fan-ionizer according to claims 1 to 9, characterized in that the needle electrodes are fan-shaped.