DE2006783C - Pure space - Google Patents

Description

Wall electrode 3 'on the opposite wall. On the air inlet side of the supply air filter 2 'can a third air-permeable, electrically conductive electrode 6 ' be mounted insulated, the opposite of the wall electrode 4 'on the air outlet side on another Potential lies

The supply air filters 2, 2 'can be in or on the ceiling or in or on a wall of the clean room 1,1' to be appropriate. The electrode on the air outlet side is then identical to the ceiling electrode 4 or one of the wall electrodes 3 ', 4'.

Attaching the supply air filter 2 in or on the floor is also conceivable. The electrode on the air outlet side is then identical to the floor electrode 3. These arrangements allow it is to change the direction of the air flow compared to the direction of the field lines.

In Figures 1 and 2 the air flow is through Symbolizes arrows. ,, .. ". .

The air flows almost vertically through the electrodes, so that the equipotential surfaces of the electrical see Field almost perpendicular to the undisturbed air flow. -

As a third electrode 6, 6 ', ceiling or wall electrodes 4, 4 'and 3' are perforated sheets, wire nets or metalized plastic grids wabrend wabrend the floor electrode 3 is designed as a load-bearing grating ..

The field strength generated by a high-voltage generator 7.7 in the working area 5.5 is preferred between 100 and 500 V / m, the field strength generated by a high-voltage generator 8.8 ' in the area of the supply air filter: he 2.2 ', preferably between 3 and 8 kV / cm.

1 sheet of drawings

Claims (3)

Devices known (see German patent claims: script 67 789), in which with the help of two electrodes to which a high voltage is applied, a 1. A clean room with devices for the electrical field is generated and thus the ion content limits the particle concentration in the supply air 5 between these electrodes is influenced. A disadvantage of electro-air conditioning, due to the supply air filter and an air flow, is the strong, low-turbulence displacement flow. soiling of the ceilings, walls or flooring, which is a device for generating attached electrodes, on which the dust of an electric field in the supply air particles settle when they release their charge, characterized in that such a Space can be regarded as an electrostatic precipitator with a very large generation of an electric field in the working dwell time. If the area (5, S ') is supplied with a pair of electrodes (3, 4, 3', 4 ') ions with the help of an air stream, on opposite wall or floor or so any dust particles that may be present are transported through the ceiling surfaces of the room Space is provided in such a way that air flow is whirled up, or new equipotential planes lead to it in the working area i _S , on which the ions attach. The dust particles, which are electrically charged almost vertically by the undisturbed airflow, can then be permeated in the name. natural or artificial air-electric field 2. Clean room according to claim I. thereby indicates that the supply air filter cells (2, 2 ') Finally, arrangements are known from between two electrodes (4, 6; 4 ', 6') and ao an electrostatic precipitator, a downstream mechadaß the air inlet and outlet to or from the niche filter and a downstream filter Supply air filter cells (2, 2 ') consist almost perpendicular to the ionization field, with the ionized air Electrodes (4, 6; 4 ', 6') runs. is circulated by a fan (Industrie-Kuner 3. Clean room according to claims 1 and 2, No. 161, 1963, page 787). characterized in that the electrode is based on the object of the invention, starting from the On the air outlet side, a device is identical to the arrangements known from the ceiling Create electrode (4) or one of the convertible electrodes, with the help of which it succeeds, especially in the (3 ', 4'). Work area itself, e.g. by rubbing the clothes manure or the footwear to remove generated dust particles 30 as quickly as possible. This object is achieved in that to generate an electric field in the Working area a pair of electrodes on opposite wall, floor or ceiling surfaces of the The invention relates to a clean room with space provided in such a way that the equipotential devices for limiting the particle concentrations in the working area are penetrated almost perpendicularly by the untration in the supply air through supply air filters and a puffy air flow.
Air flow, which has a low-turbulence displacement The detailed structure of the inventive is flow, which is a device for generating direction in the following with reference to FIGS. 1 and 2 An electric field in the supply air area is shown. sits. According to Fig. 1 is a Reiner Rauml with case The term “clean room” means electricity system. The supply air filters 2 are located a demarcated area with facilities for doing this in or on the ceiling, wah-delimitation the number of particles in the air and the floor as a grating 3 or floor-generating a uniformly the space cross-section 45 electrode 3 is formed The grating 3 is geerurchsetzenden Flow that detects as "low-turbulence, while the supply air fil displacement flow on the outflow side" can be described, ter an air-permeable, electrically conductive and on and - according to the requirements - with a higher potential lying ceiling electrode 4 Temperature, humidity and air pressure regulated is suspended. The cleaned supply air occurs lung. Clean rooms can be found e.g. B. Use in the 50 vertically from the supply air filters 2 and the preceding iso research, Development and production, in the area of lined suspended ceiling electrode 4 from and through electronic Components, used in space technology, flow uniformly with a minimum of turbuder Pharmacy and organic rearing of lenz the entire undisturbed work area of the Laboratory animals. In medicine, too, the clean room became 1. On the air inlet side of the too clean Room used successfully, e.g. with Opera- 55 air filter2, a third air-permeable, elections, in freshly operated patients, the electrode 6, which is conductive after the operation, is insulated and attached, Ration occurring infections by a strong compared to the ceiling electrode 4 on the air percentage went back. Such "clean rooms" on the exit side on a higher or lower position E.g. in the German utility model 6 911630 potential. described. 60 As another embodiment, a pure is shown in FIG Electro-air conditioning is understood to mean a loading room 1 'with a cross-flow system, where Influence of the ion content of the air depending on the supply air filter 2 'mounted in or on a wall particular climatic factor of a room. As facilities are and the opposite wall for suction Air ionizers are designed to improve the electrical climate. The one on the air outlet side known, the air-permeable, electrically conductive and attached with the help of spray discharges, UV-65 Radiation or radioactive radiation, ions isolated, suspended wall electrode 4 'is located produce, whereby preferably only ions of a sign at a higher potential than the air-permeable, be fed into the room. They are also electrically conductive and at ground potential