| 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 43 a of the third valve portion and a seat face 53 a 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 43 a of the third valve portion and the seat face 53 a of the valve seat body is formed into a tapered surface shape having a center angle alpha satisfying 120°<alpha<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.
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