CAPACITY CONTROL VALVE

摘要

A capacity control valve of the present invention includes a valve body (40) integrally having a first valve portion (41) for opening/closing a discharge-side path for having a discharge chamber (11) communicate with a control chamber (12) and a second valve portion (42) for opening/closing a suction-side path for having a suction chamber (13) communicate with the control chamber (12), a pressure sensitive body (50) arranged in a third valve chamber (38) in the middle of the suction-side path, a valve seat body (53) provided at the pressure sensitive body (50), a third valve portion (43) connected to the valve body (40) for opening/closing the suction-side path by engagement and disengagement with the valve seat body (53) and the like. One of an engagement face 43a of the third valve portion and a seat face 53a of the valve seat body is formed into a spherical shape with a radius of curvature R satisfying 9 mm < R < 11 mm and the other of the engagement face 43a of the third valve portion and the seat face 53a of the valve seat body is formed into a tapered surface shape having a center angle ± satisfying 120° < ± < 160°. By this, a liquid refrigerant or the like accumulating in the control chamber can be discharged efficiently, and predetermined capacity control can be carried out rapidly.