COMPRESSOR AND REFRIGERATION CYCLE DEVICE

This compressor comprises: a container; an electric motor unit provided inside the container; a rotary shaft which is fixed to the electric motor unit and rotationally driven by the electric motor unit; an annular cylinder which is fixed to an inner wall of the container and inside which a cylinder chamber for compressing a refrigerant is formed; an upper bearing which is mounted to the cylinder to support the rotary shaft, and in which a discharge hole for discharging the refrigerant compressed in the cylinder chamber of the cylinder is formed; and a discharge valve having a base end side which is fixed to the upper bearing, and having a distal end side which opens and closes the discharge hole formed in the upper bearing. The discharge hole formed in the upper bearing has an outer surface area which is the area of an outer opening in contact with an outer surface, the outer surface area being larger than an inner surface area which is the area of an inner opening in contact with an inner surface. When a point that is closest from a fixed axis L on the base end side of the discharge valve at an edge of the outer opening is defined as a first edge point, a point farthest from the fixed axis L on the base end side of the discharge valve at the edge of the outer opening is defined as a second edge point, a point closest from the fixed axis L on the base end side of the discharge valve at an edge of the inner opening is defined as a third edge point, and a point farthest from the fixed axis L on the base end side of the discharge valve at the edge of the inner opening is defined as a fourth edge point, the length of a distance K1 between the fixed axis L and the first edge point is equal to or less than the length of a distance K2 between the fixed axis L and the third edge point, and the length of a distance K3 between the fixed axis L and the second edge point is greater than the length of a distance K4 between the fixed axis L and the fourth edge point. A difference D1 between the distance K1 and the distance K2 is less than a difference D2 between the distance K3 and the distance K4. L'invention concerne un compresseur qui comprend : un contenant ; une unité de moteur électrique disposée à l'intérieur du récipient ; un arbre rotatif qui est fixé à l'unité de moteur électrique et entraîné en rotation par l'unité de moteur électrique ; un cylindre annulaire qui est fixé à une paroi interne du contenant et à l'intérieur duquel une chambre de cylindre pour co