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    • 8. 发明授权
    • Axial sealing apparatus for scroll type compressor
    • 涡旋式压缩机推力密封装置
    • US5823757A
    • 1998-10-20
    • US765647
    • 1996-12-31
    • Seon-Young Kim
    • Seon-Young Kim
    • F04C18/02F04C27/00F04C18/04
    • F04C27/005
    • An improved axial sealing apparatus for a scroll type apparatus which is capable of constantly maintaining pressure in a back pressure chamber by forming a back pressure hole at a predetermined portion in which the back pressure hole is opened before a compressed gas is discharged and the back pressure hole is closed after the compressed gas is substantially closed, whereby a more stable axial direction sealing can be obtained throughout the entire operation time of a scroll compressor, which includes a stationary scroll; a rotational scroll engaged at a lower portion of the stationary scroll so as to form a compression chamber therebetween; and a back pressure chamber having a back pressure hole formed at a predetermined position in which the back pressure hole is opened whereby the compression chamber and the back pressure chamber become communicated with each other before a refrigerant gas compressed in the compression chamber is discharged to the discharging chamber and in which the back pressure hole is closed after the refrigerant gas is discharged to the discharging chamber, whereby an intermediate pressure having a greater pressure than the suction gas pressure and having a lower pressure than the discharging gas pressure is introduced into the back pressure chamber.
    • PCT No.PCT / KR96 / 00064 Sec。 371日期1996年12月31日第 102(e)日期1996年12月31日PCT提交1996年5月2日PCT公布。 公开号WO96 / 35056 日期:1996年11月7日改进的涡旋式装置的轴向密封装置,其能够通过在压缩气体之前在背压孔打开的预定部分形成背压孔而不断地保持背压室中的压力 在压缩气体基本上封闭之后,背压孔关闭,从而在包括固定涡旋件的涡旋压缩机的整个运行时间内可以获得更稳定的轴向密封; 旋转涡旋盘,其在固定涡旋件的下部接合,以在其间形成压缩室; 以及背压室,其具有形成在背压孔打开的预定位置的背压孔,从而压缩室和背压室在压缩室内压缩的制冷剂气体排出之前彼此连通 排出室,并且在制冷剂气体排放到排出室之后背压孔关闭,由此将具有比吸入气体压力更大的压力并且具有比排出气体压力更低的压力的中间压力引入到后部 压力室。