公开(公告)号：US20080240963A1

公开(公告)日：2008-10-02

申请号：US12058821

申请日：2008-03-31

Applicant: Hideyuki KIMURA ,  Masami MUTO

Inventor： Hideyuki KIMURA ,  Masami MUTO

IPC: F04C27/00 ,  F01C19/00 ,  F16J15/16

CPC classification number: F04C18/123 ,  F04C23/001 ,  F04C27/009 ,  F04C2220/12

Abstract: A rotor shaft sealing structure of an oil-free rotary compressor is provided, with which is reduced a risk of occurrence of lubrication oil intrusion into the compression chamber (9) of the compressor which is liable to occur when negative pressure is produced in the compression chamber (9). The rotor shaft sealing structure is composed such that two shaft seal means (20, 30) are provided in the rotor casing (1) between the oil lubricated bearing (10, 10′) and the compression chamber (9) such that an annular airspace (24) is formed between the two shaft seal means (20,31), at least one communicating hole (34,34′) is provided to communicate the annular airspace (24) to the outside of the rotor casing (1), and the annular airspace (24) of the male rotor shaft (6) sealing part and the annular airspace (24) of the female rotor shaft (7) sealing part are connected by a between-rotor shaft communication passage (35).

Abstract translation: 提供了一种无油旋转式压缩机的转子轴密封结构，从而降低了在压缩机的压缩室（9）中产生润滑油的危险，该压缩室（9）容易在压缩机中产生负压时容易发生 室（9）。 转子轴密封结构被构成为使得在油润滑的轴承（10,10'）和压缩室（9）之间的转子壳体（1）中设置两个轴密封装置（20,30），使得环形空间 （24）形成在两个轴密封装置（20,31）之间，提供至少一个连通孔（34,34'）以将环形空间（24）连通到转子壳体（1）的外部，以及 阳转子轴（6）密封部分的环形空间（24）和阴转子轴（7）密封部分的环形空间（24）通过转子间轴连通通道（35）连接。

公开(公告)号：US20080240965A1

公开(公告)日：2008-10-02

申请号：US12058831

申请日：2008-03-31

Applicant: Hideyuki KIMURA ,  Masami MUTO

Inventor： Hideyuki KIMURA ,  Masami MUTO

IPC: F04C27/00 ,  F01D11/04 ,  F16J15/16

CPC classification number: F04C23/001 ,  F04C18/123 ,  F04C27/009 ,  F04C2220/12

Abstract: A rotor shaft sealing method for an oil-free rotary compressor is provided, with which occurrence of lubrication oil intrusion into the compression chamber of the compressor which is liable to occur when negative pressure is produced in the compression chamber, is prevented. With a rotor shaft sealing structure composed such that two shaft seal means (20,31) are provided in the rotor casing (1) between the oil lubricated bearing (10, 10′) and the compression chamber (9) such that an annular airspace (24) is formed between the two shaft seal means (20,31), at least one communicating hole (34,34′) is provided to communicate the annular airspace (24) to the outside of the rotor casing (1), and the annular airspace (24) of the male rotor shaft (6) sealing part and the annular airspace (24) of the female rotor shaft (7) sealing part are connected by a between-rotor shaft communication passage (35), pressurized air is supplied to the annular airspaces (24) by which lubrication oil intrusion into the compression chamber (9) is prevented.

Abstract translation: 提供一种无油旋转式压缩机的转子轴密封方法，防止了在压缩室中产生负压时容易发生压缩机压缩室的润滑油的发生。 利用转子轴密封结构，使得在油润滑的轴承（10,10'）和压缩室（9）之间的转子壳体（1）中设置两个轴密封装置（20,31），使得环形空间 （24）形成在两个轴密封装置（20,31）之间，提供至少一个连通孔（34,34'）以将环形空间（24）连通到转子壳体（1）的外部，以及 阳转子轴（6）密封部分的环形空间（24）和阴转子轴（7）密封部分的环形空间（24）通过转子间轴连通通道（35）连接，加压空气 供应到环形空间（24），通过该环空间（24）防止润滑油侵入压缩室（9）。