Abstract: Liquid-ring gas pump with a working chamber in which an impeller (6) rotates and which is bounded axially by a control plate (7) past which the impeller (6) moves with a small clearance and which has at least one intake and/or discharge opening (21, 22, 23) and is composed of rolled sheet. According to the invention, the edges (26) of the intake and discharge openings are at least in part bent over towards the side facing away from the impeller (6) and are rounded on the side facing the impeller and raised on the side facing away from it.

Abstract: Fluid-ring compressor unit having a horizontal shaft and a compressor housing in which, subsequent to the compressor stage, a pressure chamber is made in connection with a pressure connecting piece. The pressure chamber is divided up by a wall, which projects upward at least up to the level of the pressure opening of the compressor stage, into a first area and a second area which are connected to one another above the wall while forming a route for the delivered medium, the second area of which is connected to the pressure connecting piece. The necessity of a separate fluid separator is avoided according to the invention by the pressure chamber being designed as a fluid separator. For this purpose, the route for the delivered medium, in the upper area of the pressure chamber, is equipped with a plurality of deflection portions and/or baffle surfaces which also block off the pressure connecting piece arranged at the top from the pressure opening.

Abstract: The invention relates to a liquid ring compressor in which only one central emptying opening is provided to the outside per compressor stage. It is ensured by means of appropriate connections of the chambers pertaining to each compressor stage that the entire auxiliary/operating liquid can flow out of the compressor through the central emptying opening (s) when the compressor is stopped.

Abstract: In a liquid ring compressor, the erosion and cavitation damage occurring under certain operating conditions is avoided by adding air or gas from the outside, at a pressure which approximately corresponds to the compression pressure, into particular pressure slot areas.

Abstract: A gas jet pump having a housing and a mixing nozzle holder which, in the area of their flange connection, form a mounting for a mixing nozzle. The mounting comprises on the one hand a clamping groove formed by both flanges in their parting plane, and on the other hand an annular groove in the periphery of the mixing nozzle and a ring made of elastic material located in both grooves. This secures both the axial position of the mixing nozzle relative to the housing and also the sealing.