Compressor device with turbine section water recirculation path

A method of manufacturing a turbine section of a turbomachine comprising:

• housing a turbine wheel of a rotating group within a housing and supporting the rotating group within the housing for rotation about an axis;
• mating a first structure of the housing with a second structure of the housing member, the housing defining a circumferential inlet passage that extends about the axis, defining a turbine wheel upstream area that is disposed downstream of the circumferential inlet passage and upstream of the turbine wheel, defining a first flow path, defining a recirculation flow path, and defining an outlet that is downstream of the turbine wheel;
• the first flow path extending from the circumferential inlet passage, through the turbine wheel upstream area, across the turbine wheel, to the outlet;
• and
• the recirculation flow path extending from the circumferential inlet passage, through the turbine wheel upstream area, and back to the circumferential inlet passage.

A compressor device for a fuel cell system comprising:

• a rotating group;
• a housing that houses and supports the rotating group for rotation about an axis to define a compressor section, a motor section, and a turbine section, the turbine section including a turbine wheel of the rotating group, the turbine wheel configured to be driven in rotation by an exhaust stream from the fuel cell system, the housing at the turbine section including a circumferential inlet passage that extends about the axis, the housing at the turbine section defining a turbine wheel upstream area that is disposed downstream of the circumferential inlet passage and upstream of the turbine wheel, the housing at the turbine section defining an outlet that is downstream of the turbine wheel;
• a first flow path that extends from the circumferential inlet passage, through the turbine wheel upstream area, across the turbine wheel, to the outlet;
• and
• a recirculation flow path that extends from the circumferential inlet passage, through the turbine wheel upstream area, and back to the circumferential inlet passage.