| 摘要 |
PROBLEM TO BE SOLVED: To improve reliability by securing an oil feeding quantity by preventing foaming of a refrigerant in a pump guide part while feeding oil even if an oil level of lubricating oil lowers below a suction port of a lubrication pump in a refrigerant compressor. SOLUTION: This refrigerant compressor stores a compression mechanism part 16, an electric motor part 5, a rotary shaft 7, bearings 9, 25 and 28 and the lubrication pump 50 in a sealed vessel 1 of forming an oil reservoir 13 in a bottom part. The lubrication pump 50 has a trochoidal tooth type pump mechanism part 24, a pump case part 22A having a substantially semicircular arc-shaped suction port 22a to the pump mechanism part 24 and a pump guide part 22B extending downward from this pump case part 22A and having an oil introducing hole 22c for guiding the lubricating oil stored in the oil reservoir 13 to the suction port 22a from an introducing port 22b of an under surface. The oil introducing hole 22c is formed of the same or gradually expanding flow passage reaching the introducing port 22b from the suction port 22a. COPYRIGHT: (C)2007,JPO&INPIT
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