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US 5,100,300 AGranted
Liquid ring pumps having rotating lobe liners with end walls
AssigneeThe Nash Engineering Company
InventorHarold K. Haavik
Life of this patent
Estimating the term…
Abstract
In a liquid ring pump having a rotating liner inside a stationary housing for helping to reduce fluid friction losses, at least one end, and preferably both ends of the liner are partly closed to more completely contain the liquid ring in order to further reduce fluid friction losses.
Claims14
A liquid ring pump comprising:
- a stationary annular housing including a hollow, substantially cylindrical housing body and a substantially toroidal end plate extending radially inward from at least one axial end of said housing body to partly close said end of said housing body;
- an annular liner rotatably mounted in said housing including a hollow, substantially cylindrical liner body substantially concentric with said housing body and a substantially toroidal cover plate extending radially inward from at least one axial end of said liner body adjacent said at least one axial end of said housing body to partly close said end of said liner body so that said housing and said liner can retain a quantity of pumping liquid, said liner body being radially spaced from said housing body by a substantially cylindrical clearance concentric with said housing body and said liner body, and said cover plate being axially spaced from said end plate by a substantially toroidal clearance;
- means for introducing a bearing liquid into said cylindrical clearance and at least a radially outer portion of said toroidal clearance to provide a liquid bearing for said liner relative to said housing;
- a rotor rotatably mounted in said liner for forming the pumping liquid into a recirculating ring in said liner and said housing, the flow of pumping liquid causing said liner to rotate on said liquid bearing relative to said housing;
- and
- means for introducing gas to be compressed into the portion of said pump surrounded by said ring, and after compression of said gas by action of said ring, conveying the compressed gas from said portion of said pump.
3 more elements
A liquid ring pump comprising:
- a stationary annular housing;
- an annular liner rotatably mounted in said housing, said liner being spaced from said housing by a substantially annular clearance and having a hollow, substantially cylindrical body and a substantially toroidal cover plate extending radially inward from each axial end of said body to partly close said end of said body so that said housing and said liner can retain a quantity of pumping liquid;
- means for introducing a bearing liquid into said clearance to provide a liquid bearing for said liner relative to said housing, said bearing liquid being the same as said pumping liquid;
- a rotor rotatably mounted in said liner for forming the pumping liquid into a recirculating ring in said liner and said housing, the flow of pumping liquid causing said liner to rotate on said liquid bearing relative to said housing;
- and
- means for introducing gas to be compressed into the portion of said pump surrounded by said ring, and after compression of said gas by action of said ring, conveying the compressed gas from said portion of said pump, wherein said clearance is in fluid communication with the interior of said liner adjacent the radially innermost periphery of at least one of said cover plates so that said bearing liquid can flow through said clearance into the interior of said liner.
3 more elements
A liquid ring pump comprising:
- a stationary annular housing;
- an annular liner rotatably mounted in said housing, said liner being spaced from said housing by a substantially annular clearance and having a hollow, substantially cylindrical body and a substantially toroidal cover plate extending radially inward from each axial end of said body to partly close said end of said body so that said housing and said liner can retain a quantity of pump liquid;
- means for introducing a bearing liquid into said clearance to provide a liquid bearing for said liner relative to said housing;
- a rotor rotatably mounted in said liner for forming the pumping liquid into a recirculating ring in said liner and said housing, the flow of pumping liquid causing said liner to rotate on said liquid bearing relative to said housing;
- and
- means for introducing gas to be compressed into the portion of said pump surrounded by said ring, and after compression of said gas by action of said ring, conveying the compressed gas from said portion of said pump, wherein said clearance is in fluid communication with the interior of said liner adjacent the radially innermost periphery of at least one of said cover plates, and wherein the pressure of said bearing liquid adjacent said innermost periphery is controlled to substantially prevent said bearing liquid from flowing into the interior of said liner.
3 more elements
A liquid ring pump comprising:
- a stationary annular housing;
- an annular liner rotatably mounted in said housing, said liner being spaced from said housing by a substantially annular clearance and having a hollow, substantially cylindrical body and a substantially toroidal cover plate extending radially inward from each axial end of said body to partly close said end of said body so that said housing and said liner can retain a quantity of pumping liquid;
- means for introducing a bearing liquid into said clearance to provide a liquid bearing said liner relative to said housing;
- a rotor rotatably mounted in said liner for forming the pumping liquid into a recirculating ring in said liner and said housing, the flow of pumping liquid causing said liner to rotate on said liquid bearing relative to said housing;
- means for introducing gas to be compressed into the portion of said pump surrounded by said ring, and after compression of said gas by action of said ring, conveying the compressed gas from said portion of said pump;
- and
- a substantially annular plenum adjacent the radially innermost periphery of at least one of said cover plates, said plenum being in fluid communication with said clearance for receiving bearing liquid from said clearance and conveying said bearing liquid away from said clearance.
4 more elements
Dependencies are inferred from the claim text.