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US 12,448,977 B2Granted
Regenerative multi-stage compressor
OwnerAntonio Mischiattiinventor
Life of this patent
Estimating the term…
Abstract
A compressor of the regenerative type configured to work at pressures exceeding 50 bars includes a motor, a magnetic drive coupling connected to the motor and adapted to transmit the rotary motion to a drive shaft, which is mechanically connected to the magnetic drive coupling, and two peripheral impellers mounted on the drive shaft.
Claims12
A regenerative compressor, configured to work at pressures exceeding 50 bars, comprising:
- a motor;
- a magnetic drive coupling connected to said motor and configured to transmit a rotary motion to a drive shaft, said drive shaft being mechanically connected to said magnetic drive coupling;
- a plurality of impellers, each of said impellers being mechanically connected, directly or indirectly, to said drive shaft, each of said impellers being of a peripheral impeller and comprising a disc equipped with a set of blades mounted on one or both of two sides of the disc;
- and
- a plurality of stages, each stage comprising a shell having one of said impellers mounted therein, wherein each one of said impellers rotates in a peripheral annular duct obtained in said shell, and wherein said annular duct communicates on one side of the duct with a gas suction mouth, and ends adjacently to a delivery mouth,
- wherein said drive shaft is supported by bearings in at least two supports,
- wherein said plurality of impellers is mounted on said drive shaft in a space included between said at least two supports,
- wherein said shaft comprises a plurality of projections, arranged between said plurality of impellers, the plurality of projections rotating against one or more sealing elements constrained between said shaft, at a level of said plurality of projections, and said shells, and
- wherein said shaft is provided with an axial hole for passage of gas along said shaft.
6 more elements
A regenerative compressor, configured to work at pressures exceeding 50 bars, comprising:
- a motor;
- a magnetic drive coupling connected to said motor and configured to transmit a rotary motion to a drive shaft, said drive shaft being mechanically connected to said magnetic drive coupling;
- and
- a plurality of impellers, each of said impellers being mechanically connected, directly or indirectly, to said drive shaft, each of said impellers being of a peripheral impeller and comprising a disc equipped with a set of blades mounted on one or both of two sides of the disc,
- wherein said drive shaft is supported by bearings in at least two supports, and
- wherein said plurality of impellers is mounted on said drive shaft in a space included between said at least two supports;
- further comprising a tangential fan located at a lower end of said shaft and disposed to direct gas downwards.
4 more elements
A regenerative compressor, configured to work at pressures exceeding 50 bars, comprising:
- a motor;
- a magnetic drive coupling connected to said motor and configured to transmit a rotary motion to a drive shaft, said drive shaft being mechanically connected to said magnetic drive coupling;
- and
- a plurality of impellers, each of said impellers being mechanically connected, directly or indirectly, to said drive shaft, each of said impellers being of a peripheral impeller and comprising a disc equipped with a set of blades mounted on one or both sides of two sides of the disc,
- wherein said drive shaft is supported by bearings in at least two supports,
- wherein said plurality of impellers is mounted on said drive shaft in a space included between said at least two supports, and
- wherein said shaft is provided with an axial hole for passage of gas along said shaft, further comprising an internal magnet housed in a passage between an outer wall of said shaft and an internal wall of a containment cup containing said magnetic drive coupling, and wherein an external surface of said internal magnet comprises one or more grooves configured to guide a gas flow in an area of said containment cup.
4 more elements
Dependencies are inferred from the claim text.