US 12,378,895 B2
Axial flux motor powered air cycle machine
Viktor Kilchyk, Lancaster, NY (US); and Brent J. Merritt, Southwick, MA (US)
Assigned to Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Dec. 5, 2022, as Appl. No. 18/075,148.
Prior Publication US 2024/0183281 A1, Jun. 6, 2024
Int. Cl. F01D 15/12 (2006.01); F25B 9/00 (2006.01); F25B 9/06 (2006.01); F25B 11/02 (2006.01); H02K 21/24 (2006.01); F04D 25/02 (2006.01)
CPC F01D 15/12 (2013.01) [F25B 9/004 (2013.01); F25B 9/06 (2013.01); F25B 11/02 (2013.01); H02K 21/24 (2013.01); F04D 25/024 (2013.01); F04D 25/026 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An air cycle machine comprising:
a turbine section;
a compressor section; and
a powered axial flux magnetic gear system electromechanically coupling the turbine section to the compressor section, the powered axial flux magnetic gear system comprising:
a stator comprising a plurality of stator pole sections and oriented about a magnetic gear system axis such that the plurality of stator pole sections are distributed circumferentially about the magnetic gear system axis;
a first rotor comprising a first plurality of magnets arranged in a first plurality of polarity sections distributed circumferentially about the magnetic gear system axis in circumferential arcs of a first angular extent, the first rotor configured to interact with the stator such that the first rotor rotates at a first rotational speed when the first rotor is exposed to an electrical current;
a second rotor comprising a second plurality of magnets arranged in a second plurality of polarity sections distributed circumferentially about the magnetic gear system axis in circumferential arcs of a second angular extent, the second rotor configured to interact with the stator such that the second rotor rotates at a second rotational speed when the the second rotor is exposed to the electrical current; wherein the first and second rotational speeds depend on the electrical current, the first angular extent, and the second angular extent;
a winding system operable to stabilize a position of the first rotor and a position of the second rotor along the magnetic gear system axis;
a control module capable of supplying the electrical current to at least one of the winding system, the stator, the first rotor, and the second rotor, thereby driving rotation of the first rotor at the first rotational speed, and of the second rotor at the second rotational speed, about the magnetic gear system axis; and
a power source capable of supplying the electrical current to the control module or to at least one of the winding system, the first rotor, the stator, and the second rotor, thereby driving rotation of the first rotor at the first rotational speed, and the second rotor at the second rotational speed, about the magnetic gear system axis.