Importance

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Abstract

The invention relates to a barrier apparatus for resisting passage of harmful gases from a space through a substantially vertical opening having a top, a bottom and lateral sides, the barrier apparatus comprising a suction arrangement for sucking gases and blowing arrangement for creating a flow of a medium. In order to effectively process harmful gases even in large spaces, the suction arrangement comprises at least one suction port (1) located near the top of the opening to provide blowing substantially along the width of the opening, the blowing arrangement comprises at least one blowing port (5) located near the bottom of the opening to provide blowing substantially along the width of the opening, a fluid coupling (8, 9) coupled between the suction arrangement and the blowing arrangement being provided and defining a fluid path between the suction port (1) and the blowing port (5), a spraying device (3) being arranged in the fluid path for driving gas from the suction port to the blowing port and being arranged for spraying a liquid in the fluid path for purifying and/or cooling media flowing through the fluid path. The invention also relates to a method of guiding and processing harmful gases near a doorway.

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First Claim