Fan wheel and method for manufacturing the same

A fan wheel for high-temperature operation, comprising:

• a star-like or ray-like base plate having:
• a central middle region;
• protrusions protruding substantially radially beyond said central middle region and having an outer contour;
• axially drawn up blades disposed on said protrusions;
• and
• a base plate surface with axially drawn up segments collectively forming a star-like or ray-like structure extending from said middle region into the vicinity of said protrusions;
• said segments including a central, annular segment and said segments adjoining said central, annular segment and extending through said protrusions of said base plate substantially symmetrically with said outer contour;
• and
• said segments having a drawn up depth decreased radially outwardly along said base plate.

A fan wheel for high-temperature operation, comprising:

• a star-like or ray-like base plate having:
• an outer contour;
• a central middle region;
• protrusions protruding substantially radially beyond said central middle region;
• axially drawn up blades disposed on said protrusions;
• and
• a base plate surface with axially drawn up segments collectively forming a star-like or ray-like structure extending from said middle region into the vicinity of said protrusions;
• said segments including a central, annular segment and said segments adjoining said central, annular segment, originating from said central, annular segment and following said outer contour of said base plate.

A fan wheel for high-temperature operation, comprising:

• a star-like or ray-like base plate having:
• an outer contour;
• a central middle region;
• protrusions protruding substantially radially beyond said central middle region;
• axially drawn up blades disposed on said protrusions;
• and
• a base plate surface with axially drawn up segments collectively forming a star-like or ray-like structure extending from said middle region into the vicinity of said protrusions;
• said segments including a central, annular segment and said segments adjoining said central, annular segment, originating from said central, annular segment and following said outer contour of said base plate;
• and
• said segments having a drawn up depth decreased radially outwardly along said base plate.