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US 10,330,105 B2Granted
Compressor including flow control insert and electromagnetic actuator
AssigneeDanfoss A/S
InventorDelvis Anibal Gonzalez
Life of this patent
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Abstract
A centrifugal compressor is disclosed. The compressor includes an impeller, an electromagnetic actuator, and a flow control insert. The flow control insert is selectively moveable in response to the electromagnetic actuator to regulate a flow of fluid expelled by the impeller.
Claims12
A centrifugal compressor, comprising:
- an impeller;
- an electromagnetic actuator;
- and
- a flow control insert selectively moveable in response to the electromagnetic actuator to regulate a flow of fluid expelled by the impeller;
- a control in communication with the electromagnetic actuator to selectively move the flow control insert;
- wherein the electromagnetic actuator includes at least one electromagnet having a coil;
- wherein a level of current flowing through the coil determines a magnetic field generated by the electromagnet;
- wherein the control is configured to control a level of electric current flowing through the coil;
- wherein the electromagnetic actuator includes a first permanent magnet and a second permanent magnet;
- wherein the first permanent magnet is stationary relative to the flow control insert, and the second permanent magnet is moveable with the flow control insert;
- and
- wherein the first permanent magnet and the second permanent magnet provide a first force that urges the flow control insert in a first direction.
9 more elements
A centrifugal compressor, comprising:
- an impeller;
- an electromagnetic actuator;
- a flow control insert selectively moveable in response to the electromagnetic actuator to regulate a flow of fluid expelled by the impeller;
- a control in communication with the electromagnetic actuator to selectively move the flow control insert;
- wherein the electromagnetic actuator includes at least one electromagnet having a coil;
- wherein a level of current flowing through the coil determines a magnetic field generated by the electromagnet;
- wherein the control is configured to control a level of electric current flowing through the coil;
- wherein the electromagnetic actuator includes a first permanent magnet and a second permanent magnet;
- wherein the first permanent magnet is stationary relative to the flow control insert, and the second permanent magnet is moveable with the flow control insert;
- and
- wherein each of the first and second permanent magnets are provided by respective semi-Halbach arrays, each semi-Halbach array having a plurality of permanent magnets.
8 more elements
Dependencies are inferred from the claim text.