| 摘要 |
<p>A valved body for a hermetic motor-compressor for refrigerant fluids, such as a shaft support for a rotary-ring compressor, is constituted by a metal part comprising a wall, such as a flange, which adjoins a compression chamber for the fluid and has a fluid discharge port controlled by an automatic discharge valve. The wall has a through seats and the discharge valve comprises essentially: a cup-shaped insert of sintered steel, housed in the seat and comprising a peripheral skirt and an end wall located on the side nearer the compression chamber, with a central aperture constituting the discharge port and with an annular sealing rib surround the opening of the port within the cup, a cover applied and fixed to the cup-shaped insert on the outer face of the wall and having outlet openings for the fluid from the cavity of the insert, a disc obturator housed and guided within the insert so as to leave a passage for the fluid between the periphery of the obturator itself and the peripheral skirt of the insert, and cooperating with the sealing rib, and a disc spring interposed between the obturator and the cover for thrusting the obturator against the annular rib.</p> |
