The ornamental design for a refrigerating apparatus, as shown and described.
FIG. 1 is a top, front and right side perspective view of a refrigerating apparatus, showing my new design;
FIG. 2 is a left side elevation view thereof; and,
FIG. 3 is a right side elevation view thereof.
The areas shown in the drawings out of focus represent environment only and form no part of the claimed design; in addition the white broken lines shown throughout the drawings represent the boundaries of the claim.