Reciprocating compressor

A reciprocating compressor comprising:

• a cylinder block provided with a plurality of cylinder bores,
• a valve plate opposing one end of the cylinder block at one end face and provided with at least one inlet hole and outlet hole pair each opposing one of the cylinder bores, and
• a cylinder head opposing an other end face of the valve plate and forming at the other end face side of the valve plate an annular outlet chamber and a cylindrical inlet chamber disposed radially inside the outlet chamber,
• wherein the cylinder head is provided with:
• an inlet passage extending from the inlet chamber to connect with an external refrigerating circuit;
• an outlet passage extending from the outlet chamber to connect with the external refrigerating circuit;
• and
• an aperture control valve disposed in the inlet chamber and provided with an inlet hole connecting with the inlet passage and outlet holes communicating with the inlet chamber and controlling the aperture of the inlet passage in proportion to a pressure difference between an internal pressure of the inlet passage and the internal pressure of the inlet chamber,
• wherein the aperture control valve engages an end wall of the inlet chamber opposing the valve plate at one end provided with the inlet hole and projects from the end wall of the inlet chamber toward an other end and the valve plate, and
• wherein the aperture control valve fits in a recess formed in the end wall of the inlet chamber at one end provided with the inlet hole and abuts an anti-slip-off member at the other end to be prevented from axial movement.