Product e.g. perfume, spraying device, has piezoelectric vibrator comprising ring for maintaining perforated membrane in vibration, where membrane has edge radially supported against side of ring in angularly spaced locations

摘要

#CMT# #/CMT# The device has a piezoelectric vibrator comprising a ring (6) for maintaining a perforated membrane (7) in vibration to permit the formation of liquid droplets (8) of products. An electric generator delivers an electric signal to the vibrator for spraying the droplets contained in a tank (5), where the signal maintains the vibrator in vibration. The membrane has an edge radially supported against a side of the ring in angularly spaced locations. #CMT# : #/CMT# An independent claim is also included for a method of fixation of the perforated membrane on the ring. #CMT#USE : #/CMT# Used for spraying cosmetic and medical products e.g. perfume, make-up product, aromatherapy product and medical care product. #CMT#ADVANTAGE : #/CMT# The edge of the perforated membrane is radially supported against the side of the ring only in angularly spaced locations, thus facilitating relative positioning of the membrane at the ring at the time of mounting and improving the locking efficiency of the membrane while increasing the negative clearance between the membrane and ring. The device avoids the need of welding or sticking process, thus avoiding the risk of closing of membrane orifices by welding residues, and the risk of leakage. The device can be held in hand and operated by using a rechargeable battery. The generator maximizes the amplitude of vibrations of the membrane. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a partial, schematic and longitudinal sectional view of a product spraying device. 5 : Tank 6 : Ring 7 : Perforated membrane 8 : Droplets 13 : Openings #CMT#CERAMICS AND GLASS : #/CMT# The ring is made of zirconate, metaniobate, barium titanate or zinc oxide.