Patent ID: 9091429
Filing Date: 2015-07-28
Classification: F16K,F22B

Abstract:
1. A steam generator comprising: a steam outlet nozzle having an interior wall defining a steam outlet conduit having a central axis and an inlet end facing an interior of the steam generator; a support web suspended from the steam outlet conduit and having a central opening concentric with the central axis; a shaft slidably supported and axially moveable within the central opening and having a stop at one end that prevents the one end from slipping into the opening and an orifice plate at another end extending substantially perpendicular to the central axis and overlapping the inlet end of the steam outlet conduit with a periphery of the orifice plate extending under an upper surface of the interior of the steam generator, the orifice plate being spaced from the steam outlet conduit when the stop at the one end rests against the central opening and the orifice plate at the another end resting against an input end of the steam outlet conduit when the shaft moves to an extent of its travel in a direction to move the stop away from the support web central opening, the orifice plate being in a closed position when the shaft moves to the extent of its travel and having one or more openings blocked by the upper surface of the interior of the steam generator that restricts a flow of steam through the steam outlet conduit as compared to when the shaft is in an open position when the stop rests against the central opening; and a biasing mechanism for biasing the shaft in the open position.