| 摘要 |
In order to disperse an aroma evenly to selected areas within a building, an aromatic substance is disposed at an intermediate position between an upstream and a downstream section of a fabric air duct. The fabric duct is air permeable and/or includes discharge openings that evenly disperse scented air from within the duct to various rooms being heated, cooled, ventilated, or otherwise conditioned by the air. As the air inside the duct passes across the scented substance, the air entrains the scent molecules of the substance and disperses the scent to selected rooms. Within the same ductwork system, different rooms can be provided with different scents, and other rooms can be ventilated without a scent. |
