| 摘要 |
<p>PURPOSE:To enlarge the hole diameter of a discharging port and reduce the hydraulic loss of high-pressure gas passing through the discharging port by a method wherein a notched groove, communicating with the discharging port and extending from the discharging port into the direction of the height of a blade, is formed on the side of a fixed scroll blade. CONSTITUTION:The discharging port 24 is enlarged to the side of the fixed scroll blade 23 and the port diameter is enlarged to the size (d2) compared with the port diameter (d1) of the conventional discharging port shown by an one- dot chain line. Further, the notched groove 23a, communicating with the discharging port 24, is formed on the side surface of the fixed scroll blade 23 while the bottom surface thereof has an arced surface having the same curvature with a part of the discharging port 24 and the groove extends from the discharging port 24 into the direction of the height of the blade thereby arriving at the end of the blade. According to this method, the hydraulic loss of the gas, pressurized in the compression chamber, may be reduced when it is passing through the discharging port 24, whose hole diameter is enlarged, thus, a compression efficiency may be improved and a high compression ratio may be maintained.</p> |
