| 摘要 |
A valve device for enrichment of combustion air with oxygen gas, the valve device being connected to the supply line for combustion air and comprising a valve body with a chamber (19) which is divided into a upper and a lower portion by a membrane (11) clamped in the chamber, disposed at one side of which membrane is a spring member (12) and disposed at the other side of which is at least one rod-shaped member (10) in a duct (9) in the valve body and wherein disposed in the valve body is a duct (5) for the oxygen gas which via an opening and closing device opens out into the supply line (1), the said opening and closing device being connected to the rod-shaped member (10). The duct (9) in which the rod-shaped member (10) is disposed is connected to the supply line (1) for combustion air and to the lower portion in the valve chamber (19). The opening and closing device (6, 7, 8) is disposed largely in the centre of the cross-section of the supply line (1) and the portion of the oxygen gas duct located in the supply line is elaborated as a tube disposed in the mouth portion of which are openings (21). Disposed above the tube end is an axially displaceable sleeve member (7) which in its lower portion is provided with grooves (8) and which has its upper portion arranged at the rod-shaped member (9) the grooves (8) in the sleeve member then being arranged to interact with the openings (21) in the mouth portion. |
