Piston limiting structure, compressor, and heat exchange apparatus

A piston limiting structure, comprising:

• a cylinder, having a piston hole perpendicular to an axial direction of the cylinder and penetrating through the cylinder, wherein a projection of the piston hole in a penetrating direction is circular;
• a piston, disposed in the piston hole in a form-fit manner and slid in the piston hole in a reciprocating manner, wherein a side wall of the piston is provided with a thrust groove, a bottom surface of the thrust groove forms a thrust surface on the side wall of the piston, and the thrust groove does not penetrate through two ends of the side wall of the piston along an axial length of the piston;
• and
• a flange, provided with a limiting piece, wherein the limiting piece abuts against the thrust surface to limit the piston to be rotated around an axis of the piston itself.