Importance

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Abstract

A liquid ring pump includes an impeller rotatably supported in an open ended cup-shaped housing. The impeller includes blades which are spaced to form pockets therebetween so that a certain amount of liquid may be maintained in the pockets to compress gas introduced beneath the liquid. A control disk having an inlet port and at least one outlet port is positioned adjacent to the impeller. A cup-shaped cover having intake and pressure connections and a partition wall therebetween covers the open end of the housing. The control disk and cup-shaped cover together with the partition wall form a suction chamber in fluid communication with the intake connection and a surge chamber in fluid communication with the pressure connection. Intake gas flows from the intake connection into the suction chamber and then through the control disk inlet port into at least one of the impeller blade pockets. After the impeller rotates, the then compressed gas flows through a control disk outlet port into the surge chamber, and then to the outlet opening of the pressure connection. Noise originating at the control disk outlet port(s) is dampened by at least one baffle disposed in the surge chamber which diverts the portion of the sealing liquid expelled together with the compressed gas to follow a course that at least at one location intersects the course of the compressed gas flowing through the surge chamber toward the outlet opening of the pressure connection.

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First Claim