초록 ▼

When sliding elements, slide bushings, vanes and Oldham rings employed in various types of refrigeration compressors and other applications meet the following conditions, they resist sticking to aluminum-base components, resist depletion of the oil film on slide faces, and exhibit excellent wear res

When sliding elements, slide bushings, vanes and Oldham rings employed in various types of refrigeration compressors and other applications meet the following conditions, they resist sticking to aluminum-base components, resist depletion of the oil film on slide faces, and exhibit excellent wear resistance. Firstly, the elements must comprise an iron-base sinter having closed cells on at least the slide face. Secondly, in order for the oil film to be maintained on the slide face by the closed cells and to enhance lubricating properties, the proportion of closed cells having circular-equivalent diameter of 10 .mu.m or less, i.e. the number of .ltoreq.10 .mu.m cells/total number of cells, must equal 85% or more, and the opening area of the closed cells on the slide face must equal 5% or less. Finally, the sliding element density must be 7.3 g/cm.sup.3 or higher.

대표청구항 ▼

[ What is claimed is:] [4.]4. A refrigeration compressor, comprising:a compressor mechanism;a drive mechanism for driving said compressor mechanism;a crankshaft for transmitting a rotation, of said drive mechanism, to an orbiting scroll of said compressor mechanism; anda slide bushing provided betwe

[ What is claimed is:] [4.]4. A refrigeration compressor, comprising:a compressor mechanism;a drive mechanism for driving said compressor mechanism;a crankshaft for transmitting a rotation, of said drive mechanism, to an orbiting scroll of said compressor mechanism; anda slide bushing provided between said crankshaft and said orbiting scroll having an iron-base sinter sliding element with closed cells wherein a proportion of said closed cells having a circular-equivalent diameter of 10 .mu.m or less to a total number of cells equals 85% or more, and a cell opening area on a slide surface equals 5% or less of said total number of cells. [10.]10. A refrigeration compressor, comprising:a compressor mechanism;an orbiting scroll and a stationary scroll, positioned so as to form a compression chamber;a drive mechanism for driving said compressor mechanism;a crankshaft for transmitting a rotation, of said drive mechanism, to said orbiting scroll of said compressor mechanism; andan Oldham ring, for supporting said orbiting scroll so as to cause said orbiting scroll to undergo orbital motion without rotating with respect to said stationary scroll, having an iron-base sinter sliding element with closed cells on a slide face, wherein a proportion of said closed cells having circular-equivalent diameter of 10 .mu.m or less to a total number of cells equals 85% or more, and a cell opening area on said slide face equals 5% or less of said total number of cells.