| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a compressor capable of efficiently preventing oil flowing out of the compressor. <P>SOLUTION: A scroll compressor 101 includes a casing 10, a compression mechanism 15, a crankshaft 17, a housing 23, a main oil supply passage 61, and an ejector mechanism 91. The housing 23 includes an upper bearing 32, and a second compressed refrigerant flow path 48 is formed. The second compressed refrigerant flow path 48 leads a compressed refrigerant discharged from the compression mechanism 15 to a high-pressure space S1 inside the casing 10. The main oil supply passage 61 supplies lubrication oil stored in an oil storage part P to the upper bearing 32. The second compressed refrigerant flow path 48 has a constriction part 94 at an end. A circumferential groove 34 and an oil returning flow path 35 are formed in the housing 23. The circumferential groove 34 stores the lubrication oil supplied to the upper bearing 32. The oil returning flow path 35 is in communication with the circumferential groove 34, and opens to a space in the vicinity of the constriction part 94. The ejector mechanism 91 includes a refrigerant acceleration flow path 95a and an oil suction flow path 95b. <P>COPYRIGHT: (C)2013,JPO&INPIT |
