| 摘要 |
A spraying device with a replaceable refill of fluid therein is described, wherein: the refill comprises a body forming a reservoir for the fluid, a valve stem at an upper portion of the body and a spray head wherein said spray head has a neck portion and a nozzle portion, in said neck portion is an inlet section attached to the valve stem and in said nozzle portion is a fluid exit orifice for directing, in use, sprayed fluid; and the device comprises an outer housing adapted to receive the refill therein, the outer housing is provided with an aperture suitable for permitting, in use, the spraying of the fluid from the fluid exit orifice of the spray head therethrough, the device comprises actuation means configured for periodic actuation of the refill, the device further comprises an inner housing adapted to receive at least a portion of the spray head therein, and the device is provided with detection means within the inner housing configured to distinguish between at least one area of lower reflectance and at least one area of relatively higher reflectance on the spray head of said refill; and characterised in that the detection means are directed toward either a right side or a left side of the neck portion of a spray head and a corresponding side of the neck portion of said spray head is provided with said at least one area of lower reflectance and at least one area of higher reflectance. Methods of operation of such a spraying device are also described. |
