<p>A liquid droplet spray device for ejecting a liquid as a spray of droplets has a cartridge (15) with a nozzle arrangement (13) to eject droplets, which is vibrated by a piezo element (23a) through the agency of an actuating element (23). A resonance chamber is disposed between an inner wall (15a) of the cartridge and the actuating element (23) such that the cartridge inner wall (15a) is separated by a gap having a length B from the actuating element (23), the cartridge inner wall (15a) being cap-shaped and extending along the side surfaces of the actuating element (23) and being frictionally attached to the side surfaces along a distance A. The resonance chamber (10) improves the efficiency of transmission of vibrations to the cartridge.</p>
申请公布号
WO2012062619(A1)
申请公布日期
2012.05.18
申请号
WO2011EP69158
申请日期
2011.10.31
申请人
BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED;FERIANI, AMIR;TACHE, CHRISTIAN;SANDOZ, JEAN-PAUL;ZAUGG, CEDRIC