| 摘要 |
The one or more perfume-generators (12) emit perfumes into the vicinity of one or more lift shafts depending on various circumstances such as passengers' predelictions, destinations, time of day or season, air quality and so forth. The perfumes are released via outlet nozzles (13) with sensors (21) detecting people's presence, in portions in small quantities covering small a and lasting only for a few seconds. The areas include the cabins (5), storeys (16) and lift-shaft doors.(17) |
