| 摘要 |
<p>A reciprocating compressor comprises compression chambers (21,22) formed on at least one end of pistons (12) slidably received within respective cylinder bores (11) of a cylinder block (1,2). A cylinder head (4,6) is secured to the cylinder block (1,2) and has a high-pressure chamber (24) and a low-pressure chamber (23) formed therein. A separating member is arranged between the cylinder block (1,2) and the cylinder head (4,6) and has a valve sheet (27,28), a valve plate (3,5) and a stopper plate (29,30). The valve sheet (27,28) is formed with suction valves (27d,28d) and discharge valves (27a,28a), whilst the valve plate (3,5) is arranged between the valve sheet (27,28) and the cylinder block (1,2) and is formed with refrigerant outlet ports (3a,5a) and relief holes (3b,5b) each opening into a corresponding one of the compression chambers (21,22), for communicating with a corresponding one of refrigerant inlet ports (29d,30d) formed through the stopper plate (29,30) when the corresponding suction valve (27d,28d) opens. The relief holes (3b,5b) and/or refrigerant outlet ports (3a,5a) each has a projecting portion (3d,5d;3d',5d') formed integrally with a portion of a rim of an opening thereof in a manner bent in a direction of thickness of the valve plate (3,5). The stopper plate (29,30) is arranged between the valve sheet (27,28) and the cylinder head (4,6) and is formed with the refrigerant inlet ports (29d,30d), refrigerant outlet passages (29b,30b) each opening into the high-pressure chamber (24) for communication with a corresponding one of the refrigerant outlet ports (3a,5a) when a corresponding one of the discharge valves (27a,28a) opens, and stoppers (29a,30a) each setting a limit to an amount of opening of a corresponding one of the discharge valves (27a,28a). <IMAGE></p> |
