METHOD AND DEVICE FOR PROVIDING A ZONE OF CLEAN AIR AT AN OPERATION AREA AND USE OF SAID DEVICE

摘要

The present invention relates to a method and a device for providing a zone (2) of clean air at an operation area (3) by means of an air treatment device (1 ) with a lighting device (25). The method means that the air treatment device (1 ) and the lighting device (25) and/or the operation area (3) are/is brought or have/has been brought to a functional position such that the air treatment device (1 ) and the lighting device (25) are located above the operation area (3) and between said operation area (3) and the ceiling (32) in the operation premises (4) with the operation area (3), that air is received or taken in into the air treatment device (1 ) from upper portions of the operation premises (4), that air is filtered in the air treatment device (1 ) for providing clean air which shall define the zone (2) of clean air, that air is cooled in the air treatment device (1) such that clean air have such lower temperature than impure air (8) surrounding the zone (2) of clean air, that said clean air descends slowly downwards towards the operation area (3), and that the clean air is emitted or discharged from the air treatment device (1 ) as laminar flows of clean air. The device therefor, comprises, except that the air treatment device (1) and the lighting device (25) and/or the operation area (3) in functional position are/is provided according to the above, at least one air inlet for said receipt or intake of air, a filter device for said filtering, a device for said cooling of air and a device for emitting or discharging said laminar flows of clean air.