Patent ID: 9175685
Filing Date: 2015-11-03
Classification: F04C

Abstract:
1. A pathway formed in a portion of a liquid ring pump, said liquid ring pump comprising a housing, a port plate, a rotor, and a shaft; said housing forms a housing cavity in which said rotor is disposed, said shaft extends into said cavity and into a bore formed in a hub of said rotor; a plurality of rotor blades of said rotor extend radially outward from said hub, each of said rotor blades have an end extending in the axial direction relative to said shaft, said axially extending ends form a circumferential cylindrical cavity, said circumferential cylindrical cavity being a non-conical cavity, a plurality of buckets are formed by said plurality of rotor blades; said port plate is coupled to an open end of said housing, said port plate has a discharge port and an inlet port each of which open into said housing cavity, said discharge port and said inlet port each have a leading edge and a closing edge, said port plate is non-conical and without a gas bypass, a first bucket of said plurality of said buckets between the closing edge of said inlet port and leading edge of said discharge port, a second bucket of said plurality of said buckets is between said closing edge of said discharge port and said leading edge of said inlet port; said pathway formed in said liquid ring pump comprising: said first and second openings of said pathway being interconnected wherein said pathway allows for the flow of gas through the circumferential cylindrical cavity from said second bucket to said first bucket and further is adapted to be isolated from and sealed off from said discharge port and inlet port in said port plate when said pump is in a running mode;