Non-energised assembly for delivering volatile fluid

摘要

An assembly comprising a device (1) and a refill 10 of volatile fluid, wherein the device comprises a housing with an internal recess (18) configured to releasably retain the refill therein and an activation member (19) within the internal recess; and wherein the refill is a sealed unit comprising a reservoir layer 12 with a reservoir chamber 11; at least two feed tubes 14 with a diameter of 3mm +/- 2mm extending away from the reservoir wherein each feed tube 14 is provided with a predetermined zone of weakness 15; a vapour permeable membrane 16 that is exposed to the external environment on one side and sealed to the at least a part of the refill on the other side to define a membrane chamber therebetween; and whereby the action of retaining the refill in the device causes the activation member (19) to impinge against the refill to bend the refill at or adjacent the predetermined zone of weakness 15 and open the feed tubes 14 to each have an open area of 0.50-19.50mm2 and permit the volatile fluid to flow from the reservoir 11 and through at least one of the openings to the membrane chamber.