COMPRESSOR

• Main Authors: MATSUURA DAI, TAKEDA KATSUYUKI
• Format: Patent
• Language: English
• Published: 03.12.2008
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; WEAPONS

A compressor in which oil is stably fed to sliding parts. The compressor comprises an ejector oil pump (80) for sucking the oil from an oil sump (15) at the inside bottom part of a closed container (12) into an oil passage (90) formed in a rotating shaft (16). The ejector oil pump (80) comprises an oil suction pipe (82) having one end connected to the oil passage (90) and the other end open to the inside of the oil sump (15) and an ejector pipe (88) having one end communicating with the discharge side of a first rotary compressing element (32) and the other end inserted into the other end opening of the oil suction pipe (82) and open to the inside. The inner diameter Sb of the other end of the oil suction pipe (82) is larger than the outer diameter Sa of the other end of the ejector pipe so that an oil suction gap can be formed therebetween. A first dowel part (71) and a second dowel part (72) are formed at the other end of the oil suction pipe (82) as positioning parts (70) for positioning the other end of the ejector pipe (88). ® KIPO & WIPO 2009