| 摘要 |
In a reciprocating refrigerant compressor including a cylinder block having a cylinder bore 6, a compression chamber defined within the cylinder bore 6, a cylinder head that has a low-pressure chamber formed therein for receiving refrigerant gas to be drawn into the compression chamber, and is coupled to one end face of the cylinder block, a valve plate 2 that is arranged between the compression chamber and the low-pressure chamber, and is formed with an inlet port 60 for guiding the refrigerant from the low-pressure chamber into the compression chamber, and an inlet valve 70 for opening and closing the inlet port 60, wherein the inlet valve 70 has an end whose shape is adapted to a shape of the inlet port 60, the shape of the inlet port 60 is non-circular, and a portion of an opening edge of the inlet port 60 protrudes into the inside of the inlet port 60, with tangential lines m drawn from the protruding portions 90, 91, 92, 93 intersecting with the opening edge of the inlet port 60 at least two points.
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