| abstract |
A mist generator device 201 comprises: an elongate mist generator housing 204 comprising an air inlet port 207 and a mist outlet port 208; a liquid chamber 218 provided within housing 204, containing a liquid to be atomised; a sonication chamber 219 within the housing 204; a capillary element 222 extending between the liquid chamber 218 and the sonication chamber 219 such that a first portion of the capillary element is within the liquid chamber 218 and a second portion is within the sonication chamber 219; an ultrasonic transducer 215 having a generally planar atomisation surface within the sonication chamber 219, mounted such that the surface is parallel with a longitudinal length of the housing 204, wherein part of the second portion of the capillary element 222 is superimposed on part of the atomisation surface, wherein the transducer 215 vibrates the surface to atomise liquid carried by the capillary element 222 to generate mist comprising the atomised liquid and air; and an airflow arrangement which provides and air flow path between the inlet and outlet ports 207, 208. The capillary element 222 may have a first generally rectangular portion and a second partly circular portion. |