| 摘要 |
The invention concerns a helical rotary compressor comprising a fixed spiral (2) in a housing (1) and mobile spiral (3) supported on an axial ball-bearing (7). The inventive helical rotary compressor is characterized in the axial ball-bearing (7) is produced in the form of a three-point ball-bearing (8, 9) whereof one bearing flange (8.1, 9.1) has two contact zones (9.1.1.1.1, 9.1.1.2.1) and whereof the other bearing flange (8.2, 9.2) has one contact zone (9.2.1.1). Thus precise guiding of the bearing balls (8.3, 9.3) is achieved through the two contact zones (9.1.1.1.1, 9.1.1.2.1) of one bearing flange (8.1, 9.1), thereby providing a positive effect on the noise behaviour of the bearing arrangement. |
