| 摘要 |
A magnetic axial bearing arrangement in a reciprocating hermetic compressor, comprising: a cylinder block ( 20 ) and a radial bearing hub ( 40 ); a crankshaft ( 50 ) securing a rotor ( 61 ) of an electric motor ( 60 ), said arrangement comprising at least one magnetic axial bearing assembly ( 100 ) formed of a pair of magnet elements ( 101 ), a magnet element ( 101 ) of each pair being mounted to a respective part of at least one of the pairs of parts of crankshaft ( 50 ) and cylinder block ( 20 ), of cylinder block ( 20 ) and rotor ( 61 ), or of crankshaft ( 50 ) and external bearing ( 120 ), the parts of at least one of the pairs of parts carrying respective confronting mechanical stops which are maintained spaced apart by an axial gap (FA) smaller than a magnetic axial gap (FM) higher than zero and to be maintained between the magnet elements ( 101 ) of a magnetic axial bearing assembly ( 100 ).
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