The ornamental design for a beanroastingdevice, as shown and described.
FIG. 1 is a top perspective view of a bean roasting device, showing the new design;
FIG. 2 is a front view of the bean roasting device of FIG. 1;
FIG. 3 is a left side view of the bean roasting device of FIG. 1;
FIG. 4 is a right side view of the bean roasting device of FIG. 1;
FIG. 5 is a back view of the bean roasting device of FIG. 1;
FIG. 6 is a top view of the bean roasting device of FIG. 1; and,
FIG. 7 is a bottom view of the bean roasting device of FIG. 1.
The dashed lines in the drawings depict portions of the bean roasting device that form no part of the claimed design. The dash-dot-dash lines in the drawings indicate boundaries that form no part of the claimed design.