Patents Primary Class: 417/68 Liquid ring compressor - United States Patent 7066718 Publication date: June 27, 2006 Assignee: Roto International AS (Kolbotn, NO) Abstract: The invention relates to a liquid ring compressor and/or pump, comprising a rotating compressor casing (1), a shaft journal (10) eccentrically located relative to the compressor casing's axis of rotation, with a surrounding bearing (15). One or more compressor wheels (14) with at least one vane are disposed in the compressor casing with the inside of the compressor wheel (14) in abutment against and rotating around the bearing (15) and inlet and outlet ports for the fluid that has to be compressed. When the compressor casing is rotated, a liquid ring (20) is created against the inner wall of the rotating compressor casing (1), which liquid ring (20) together with the compressor wheel (14) forms compression chambers. The liquid ring compressor further comprises at least one magnetic element mounted in the compressor casing (1) adjacent to the compressor wheel (14), where when the compressor casing (1) is rotated, the magnetic element makes the free-running compressor wheel (14) rotate at the same rotational speed as the compressor casing (1). Liquid ring pumps with rotating liners - United States Patent 5295794 Publication date: March 22, 1994 Assignee: The Nash Engineering Company (Norwalk, CT) Abstract:Liquid ring pumps with rotating liners supported by a bearing fluid (pressurized liquid or compressed gas) have a bearing fluid distribution system that compensates for the radially unsymmetric load on the rotating liner. If the liner bearing fluid is compressed gas, the axial ends of the liner may be either open and unsealed so that expended bearing gas escapes into the liquid ring in the pump, or the axial ends of the liner may be partly closed by radially inwardly extending end plates. Various mechanical and/or liquid seal structures may be used in conjunction with the end plates to seal the axial ends of the liner and/or to flush the clearances adjacent the axial ends of the liner. Noise control for conically ported liquid ring pumps - United States Patent 4521161 Publication date: June 4, 1985 Assignee: The Nash Engineering Company (Norwalk, CT) Abstract:In liquid ring pumps having conical port members, cavitation and associated operating noise are reduced by providing a second subsidiary discharge port beyond the closing edge of the main discharge port in the direction of rotor rotation. Liquid ring pump with vanes in liquid ring - United States Patent 4422832 Publication date: Dec.27, 1983 Assignee: The Nash Engineering Company (Norwalk, CT) Abstract: A liquid ring pump having at least one vane disposed in the portion of the liquid ring between the outer periphery of the rotor and the inner periphery of the housing for controlling the flow of the adjacent liquid to reduce energy losses due to such factors as the curvature of the liquid flow and re-entry of the liquid into the rotor with velocity which does not match the velocity of the liquid already in the rotor.

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