Respiratory machine

FIG. 1 is a perspective view of a respiratory machine, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof.

The broken line showing is included for the purpose of illustrating environmental structure with the line itself and all within forming no part of the claimed design.