| 摘要 |
PCT No. PCT/SE88/00215 Sec. 371 Date Oct. 26, 1989 Sec. 102(e) Date Oct. 26, 1989 PCT Filed Apr. 27, 1988 PCT Pub. No. WO88/08333 PCT Pub. Date Nov. 3, 1988.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), the pressure side (14) of which being connectable to a driving medium, e.g. water under pressure, and the suction side of which being 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 diffuser (16) of the injector. The diffusor (16) is slightly conical and on the inlet side is provided with a portion of bigger, preferably much bigger cross-sectional area than the hole (19) of the spray nozzle (18). The diffusor (16) is arranged to open into an expansion chamber (20), to which is connectable a pressurized gas, e.g. air, for transport of the foam created therein to the nozzle (30). |
