Patent ID: 6109901
Filing Date: 2000-08-29
Classification: F01C,F04C

Abstract:
A vane-type rotary compressor comprising:a cylinder having a cylindrical inner surface;a rotor rotatably mounted in said cylinder and having a plurality of slots defined therein;a plurality of vanes slidably mounted in said plurality of slots, respectively;a drive shaft to which said rotor is rigidly secured for rotation together therewith;first and second covers secured to opposite ends of said cylinder to define a compression chamber therebetween, said first cover having a first bypass passage defined therein so as to extend therethrough;a bearing mounted in said first cover for rotatably supporting said drive shaft;a first shaft seal part mounted in said first cover so as to be held in contact with said drive shaft; anda second shaft seal part mounted in said first cover and positioned between said bearing and said first shaft seal part, said second shaft seal part being held in contact with said drive shaft,wherein a space defined between said first and second shaft seal parts communicates with a suction stroke portion of said compression chamber via said first bypass passage.