Fan shield and bearing housing for air cycle machine

摘要

A fan shield for an air cycle machine includes a fan shield body in the general shape of a frustum of a cone having curved sides. The curved sides define a radius of curvature and a center point of curvature that corresponds to the radius of curvature. The center point of curvature is an axial distance from a large end of the fan shield body and a radial distance from the central axis such that a ratio of the radial distance to the axial distance is between 1.160 and 1.360. A bearing housing includes a body that defines a cylindrical portion and an annular flange at one end. The annular flange includes a first attachment opening, a second attachment opening and a third attachment opening that are non-uniformly circumferentially spaced around the flange.

主权项

1. A fan shield for an air cycle machine, the fan shield comprising:
a fan shield body in the general shape of a frustum of a cone having curved sides that extend around a central axis, the curved sides define a radius of curvature (RC) and a center point of curvature that corresponds to the radius of curvature, the center point of curvature is an axial distance (DA) from a large end of the fan shield body and radial distance (DR) from the central axis such that a ratio DR/DA is between 1.160 and 1.360, wherein the fan shield body includes a first attachment opening, a second attachment opening and a third attachment opening that are non-uniformly circumferentially spaced around the fan shield body.