Patent ID: 6092549
Filing Date: 2000-07-25
Classification: E03B,E03C,Y10T

Abstract:
An arrangement in a drain system in a building, wherein said drain system is divided into at least two parts, namely a first part (2) arranged to receive drain water contaminated to a relatively high degree from one or a plurality of first units (3) and a second part (10) separated from said first drain system part (2) and arranged to receive drain water normally contaminated to a lower degree from one or a plurality of second units (11,12) such that drain water emanating from said first (3) and second (11,12) units remains unmixed, characterized in thatat least one of said drain system parts (2, 10) comprises at least one drain conduit (13) and at least one unit (11) connected thereto and so constructed that said drain conduit (13) lacks traps preventing a flow of air therethrough, and an apparatus (16) is connected to said drain conduit (13), for generating such a negative pressure in said drain conduit (13) giving rise to an evacuating flow of air from a room in question in said building through said at least one unit (11) and through said drain conduit (13).