| 摘要 |
A device in washing and rinsing apparatuses for continuously creating a foam, and conveying this to a nozzle (30), which device incorporates an injector (12), to the pressure side (14) of which is connectable a driving medium, e.g. water under pressure, and the suction side of which is connectable to a liquid, foam-forming detergent. The spray nozzle (18) of the injector is designed with an elongated, cross-sectionally very small hole (19), adapted to press the driving medium as a very thin jet into the diffusor (16) of the injector, that the diffusor (16) is slightly conical and on the inlet side provided with a portion of bigger, preferably much bigger cross-sectional area than the hole (19) of the spray nozzle (18), and that the diffusor (16) is arranged to open in an expansion chamber (20), to which is connectable a pressurized gas, e.g. air, for transport of the foam created therein to said nozzle (30). |
