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US 12,553,443 B2Granted
Multi-stage compressor with single electric direct drive motor
AssigneeIngersoll-Rand Industrial U.S., Inc.
InventorsCristiano Lissoni, Juha Tuomas Saari, Jouko Tapani Peussa
Life of this patent
Estimating the term…
Abstract
A compressor system includes an electric motor having a rotatable output shaft extending from either end thereof. The compressor system further includes multiple compression stages fluidly coupled to one another in series and mechanically connected to the output shaft. The first compressor stage includes two split impellers with each impeller discharging approximately one half of the fluid flow at a desired pressure to the second compressor stage.
Claims21
A compressor system comprising:
- a single electric motor having a first end and a second end;
- a rotatable output shaft extending from each of the first and second ends of the electric motor;
- first, second, and third compressor stages fluidly coupled to one another in series and mechanically connected to the output shaft;
- the first compressor stage including two split impellers with each split impeller discharging approximately one half of the fluid flow at a desired pressure to the second compressor stage,
- wherein one of the split impellers of the first stage compressor is coupled to the output shaft at the first end of the electric motor and the other of the split impellers is coupled to the output shaft at the second end of the electric motor.
2 more elements
A compressor system comprising:
- an electric motor;
- a rotatable output shaft extending from the electric motor from a first end and a second end;
- an active magnetic bearing coupled to the output shaft;
- a first compressor stage coupled to the output shaft;
- a first aftercooler positioned downstream of the first compressor stage;
- a second compressor stage coupled to the output shaft positioned downstream of the first aftercooler;
- a second aftercooler positioned downstream of the second compressor stage;
- a third compressor stage coupled to the output shaft positioned downstream of the second aftercooler;
- a third aftercooler positioned downstream of the third compressor stage;
- wherein the first compressor stage includes a pair of split impellers such that each of the split impellers compresses approximately one half of the fluid flow to a desired pressure in the first compressor stage, and
- wherein one of the split impellers is coupled to the output shaft at the first end of the electric motor and the other of the split impellers is coupled to the output shaft at the second end of the electric motor.
8 more elements
A compressor system comprising:
- an electric motor;
- a rotatable output shaft extending from a first end and a second end of the electric motor;
- an active magnetic bearing coupled to the output shaft;
- a first compressor stage coupled to the output shaft;
- a first aftercooler positioned downstream of the first compressor stage;
- a second compressor stage coupled to the output shaft positioned downstream of the first aftercooler;
- a second aftercooler positioned downstream of the second compressor stage;
- a third compressor stage coupled to the output shaft positioned downstream of the second aftercooler;
- a third aftercooler positioned downstream of the third compressor stage, the first compressor stage including a pair of split impellers such that each of the split impellers compresses approximately one half of the fluid flow to a desired pressure in the first compressor stage,
- wherein one of the split impellers is coupled to the output shaft at the first end of the electric motor and the other of the split impellers is coupled to the output shaft at the second end of the electric motor, and
- wherein the second compressor stage is coupled to the output shaft between the one of the split impellers of the first stage compressor and the first end of the electric motor, and wherein the third compressor stage is coupled to the output shaft between the other of the split impellers and the second end of the electric motor.
8 more elements
Dependencies are inferred from the claim text.