Compressor

A compressor which is provided with a compression chamber and a discharge passage and is configured to deliver a refrigerant compressed in said compression chamber to an external device through said discharge passage, comprising:

• a cylinder block configured to form said compression chamber;
• a rear housing configured to form a discharge chamber toward which the refrigerant compressed in said compression chamber is discharged and an accommodation chamber accommodating a check valve therein and communicating with said discharge chamber through said check valve;
• and
• a valve-forming plate interposed between said cylinder block and said rear housing, and including a communication hole which constitutes a part of said discharge passage,
• said rear housing including a first passage extending from said accommodation chamber towards said communication hole of said valve-forming plate,
• said cylinder block including a connection portion to be connected to said external device, an outlet space opening towards said connection portion, and a second passage extending from said outlet space towards said communication hole of the valve-forming plate,
• said discharge passage including said discharge chamber, said accommodation chamber, said first passage, said communication hole, said second passage, and said outlet space, and
• the flow passage area of said communication hole being larger than at least one of the flow passage area of said first passage and the flow passage area of said second passage,
• wherein at least one of said cylinder block and said rear housing includes a main bulge portion bulging outward from an outer periphery thereof,
• wherein said valve-forming plate includes a circular portion and a cooperating bulge portion that bulges from an outer peripheral edge of the circular portion, said main bulge portion and said cooperating bulge portion being aligned in a circumferential direction of said cylinder block, the communication hole being formed in the cooperating bulge portion and having an elongated shape, wherein a longitudinal axis of the elongated shape extends in a circumferential direction of said valve-forming plate,
• wherein said first passage is formed so as to be inclined with respect to a planar surface of the valve-forming plate, and
• wherein a central axis of said first passage extends transverse to a central axis of said second passage.