DE1914780A1 - Method and apparatus for generating a beam of ionized gas - Google Patents

Description

Method and apparatus for generating a beam of ionized gas

The invention relates to a method for generating a beam of ionized gas and an ion generator to carry out the procedure.

There are various methods of generating ions and devices, for example needles connected to a minus potential, the tips of which have a positive one Opposite electrode. There is an inhomogeneous electrode between the needle tips and the positive electrode Electric field which, because of its high density in the area of the needle tip, leads to the escape of electrons from the tip and leads to a subsequent ionization of parts of the surrounding gas. This device works with extremely low degrees of efficiency and can therefore practically only be used in the laboratory. In addition, although in this case the phenomenon known as "electric wind" occurs, that the ions obtained in this way only increase occasionally with a further reduction in efficiency are using.

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In contrast, the invention is based on the object of a method and device for generating a To create a beam of ionized gas, which at high efficiencies, a large yield of ionized and gas which can be used for a wide variety of purposes, particularly industrial purposes, at the lowest possible Costs supplies.

This object is achieved with a method which is characterized in that, according to the invention, the gas jet generated, maintained and at least partially generated by charge carriers accelerated in an electric field ionized and aligned with a mechanical guide.

The gas jet is preferably exposed to the charge carrier bombardment after the mechanical alignment, wherein in the preferred embodiment electrons are accelerated as charge carriers in the electric field will.

An ion generator is used to carry out the method; of the gas jet lying tube, which is at least partially arranged in the electric field and open on both sides is provided, in which the electric field continues to be aligned in the beam direction and in which a charge carrier source is provided and is arranged coaxially with or in the axis of the tube.

In a particularly preferred embodiment of the invention If the tube is designed as an electrode, it is connected to a negative potential and forms the charge carrier source. There is a greater proportion of these pipes

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number arranged one behind the other in at least one row and fixed in a metal plate, and preferably is in front of the exit ends of the tubes with a a certain constant distance a counter electrode arranged, the plate-shaped and with one of the number the number of openings corresponding to the number of pipes, which are arranged coaxially to their pipes The tubes are also tapered at the outlet end in the direction of the jet to such an extent that the outermost tube end becomes a linear charge carrier source.

Experiments with such an ion generator have shown that compared to the devices described above an extreme improvement in efficiency is achieved, which is achieved with the potential of the electric field between the tips of the tubes and the counter electrode of approx. 10 KV to beam velocities of the ionized gas leads to extinguishing a candle held under an opening in the counter electrode bring. The power required for this was in the preferred, illustrated embodiment, six watts per running meter. The task at hand will be So solved with the simplest means outstandingly well.

The invention is explained in more detail below with reference to the preferred exemplary embodiment shown in the drawings.
Show it:

1: A plan view of the gas inflow side of the ion generator according to the invention in the direction of arrow 1;

FIG. 2: a longitudinal section through the generator according to FIG. 1;

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INSPECTED

FIG. 3: a view of the outlet side of the generator according to FIG Arrow 3 in Fig. 2; and

Fig. 4: on a greatly enlarged scale

a partial section through a tube with a counter electrode underneath and provided with an opening.

The ion generator is constructed as follows: In a metal plate 1 are in one or more Rows of tubes 2 used, which are made of metal and are firmly connected to the plate 1. At the plate 1 can also be a non-metallic plate, provided that the tubes 2 are electrically connected to each other are connected. The axes of all tubes are parallel, and the tubes are open on both sides, so that one unhindered air or gas flow through the pipes is possible. The plate 1 is shown in the figure Embodiment limited in length; in practice it can have any length and For example, consist of simple tape material, which, however, must have sufficient strength to to ensure an exact position of the tubes 2.

The plate 1 and thereby the pipes 2 are placed at a negative potential of, for example, 10 KV, see above that between the pipes and earth or a counter electrode 3, an electric field is formed. By doing The illustrated embodiment of the invention is the counter electrode 3 via insulating spacers 4 connected to plate 1 and connected to earth. As a result, it also forms a protection against accidental contact with respect to the pipes under high voltage 2.

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The counter electrode 3 is plate-shaped (compare in particular Fig. 3) and provided with openings 5, the center of which is in the extended axis of the respective overlying tube 2 is located.

In operation, the tubes detach from the outlet end 6 under the influence of the electric field and the am The exit end of the particularly strong field line concentration of electrons, which in the direction of the counter electrode 3 can be accelerated. These electrons give off energy to the gas molecules in their path, whereby these are accelerated and (depending on the energy of the electrons) ionized. The accelerated gas molecules move in the direction of the opening 5 adjacent to them, which creates a negative pressure in the pipe 2, which leads to the inflow of fresh gas. As soon as a state of equilibrium has been established, the gas flowing through each pipe has a high velocity in the direction of the pipe axis. The one on this Wise generated gas jet is able to blow out a candle held under one of the openings 5 will.

After leaving the tube 2, the gas jet is released from the electrons that are detached from the exit end ionized, so that beyond the counter electrode 3, a large amount of ionized gas is freely available is.

If the ion generator according to the invention is used, for example, to sterilize rooms, a The number of ribbon-shaped ones appropriate to the size of the room. Ion generators hung on the ceiling of the room, screwed

ο. Like. The counter electrode 3, which is preferably connected to earth, serves as protection against accidental contact. The whole After the pipes are connected to a negative potential of sufficient size, space is continuously filled with a large amount of ions supplied, and by the thus generated content of activated Oxygen is becoming a purity of the air that has hitherto only been attainable at unacceptable expense Bacterial content reached. Ion generators of this type are therefore of particular advantage in working and working Use storage rooms in the food industry.

In one example, in which pipes with an inside diameter of 3 mm and a wall thickness of approx. 0.2 5 mm with an axis distance of 3C mm and a distance of the outlet end 6 from the counter electrode. 3 of also 30 mm and tubes with a length of 50 mm were used in a row, resulted In a comparison room, after storing fish for one day, there was no longer a level of air bacteria was to be counted while the same quantity of fish in a simply wired room that with such Ion generators, led to an air bacterial content of 2 (two) bacteria per ecm.

A constant distance between the outlet ends of the tubes 2 and the plate-shaped counterelectrode 3 is of particular importance for the high efficiency of the ion generator according to the invention the coaxial position of the openings 5 to their tubes 2 ₉ because an eccentricity of the openings would lead to this? that the gas jet emerging from the tube then make a larger part on the counter electrode 3 to t-iürde ^ as verdeutlichto likewise a consideration of Figure 4 _a

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Claims (22)

19147B0 EXPECTATIONS Ι / Method of generating a beam of ionized Gas, characterized in that the gas jet is caused by charge carriers accelerated in an electric field generated, maintained and at least partially ionized and aligned with a mechanical guide will. " 2. The method according to claim 1, characterized in ™ that the gas jet is exposed to the charge carrier bombardment prior to the mechanical alignment. 3. The method according to claim 1, characterized in that that the gas jet is exposed to the charge carrier bombardment after the mechanical alignment. 4. The method according to any one of claims 1 to 3, characterized in that electrons in the electric field are accelerated as charge carriers. 5. Ion generator for carrying out the method according to λ one of claims 1 to 4, characterized by a tube (2) lying in the flow direction of the gas jet, which causes the mechanical guidance, is at least partially arranged in the electric field and is open on both sides; dnreh alignment of the electric field in the direction of the beam; and by a charge carrier source which is arranged coaxially with or in the axis of the tube (2). 6. ion generator according to claim 5, characterized in that that the tube (2) is offset in the axial direction with respect to the charge carrier source. 009840/0864 7. ion generator according to claim 5 or 6, characterized by one connected to earth or positive potential plate-shaped counter-electrode (3) which is opposite the outlet end (6) of the tube (2). 8. ion generator according to claim 7, characterized in that that the distance of the counter electrode (3) from the outlet end (6) of the Tube (2) is low. 9. ion generator according to claim 7 or 8, characterized in that that the counter electrode (3) is coaxial with the Has tube (2) lying opening (5). 10. Ion generator according to claim 9, characterized in that the diameter of the opening (5) is equal to or greater is als'the inside diameter of the pipe (2.) 11. ion generator according to one of claims 5 to 10, characterized in that the tube (2), "as an electrode formed, connected to negative potential and forms the charge carrier source. 12. Ion generator according to one of the preceding claims, characterized in that the counter electrode ((3) is rod-shaped and arranged in the tube (2). 13. Ion generator according to one of claims 5 to 12, characterized in that the outlet end (6) of the tube (2) has a wall thickness which tapers in the direction of the jet Has. 14. Ion generator according to one of the preceding claims, characterized in that a larger number of pipes (2) in at least one row one behind the other 009840 / 086A other inserted into a metal plate (1) and connected to this, and that this metal plate together forms the negative electrode with the tubes (2). . 15. Ion generator according to claim 14, characterized in that in the beam direction in front of the metal plate
(1) The counter-electrode (3) provided with the openings i'5) is arranged running parallel to this. 16. Ion generator according to claim 15, characterized in that the counter electrode (3) is attached to the metal plate via insulating λ spacers (4). 17. Ion generator according to one of the preceding claims, characterized in that the shortest distance between the exit end of each tube i2J and the counter electrode (3) is the same. 18. Ion generator according to one of the preceding claims, characterized in that the tubes (2)
have a round cross-section 19 · Ion generator according to one of the preceding claims, characterized in that the tubes (2) {are straight · 20. Ion generator according to one of the preceding claims, characterized in that it is at a distance
Is arranged in front of a wall, the ceiling of a room or the like. 21. Ion generator according to one of the preceding claims, characterized in that the tubes (2) are designed to be heatable * 009840/0864 22. Ion generator according to claim 21, characterized by one arranged in front of the charge carrier source Device for heating the gas to be ionized. 009840/0864 ι * · ♦ Blank page