| 摘要 |
An improved vacuum pump mechanism (10) is described in which a perforated element (14) is arranged to intersect a channel member (12). Relative movement of the perforated element and channel member causes gas molecules to be urged from inlet (16) to an outlet (18) of the pump. Gas molecules are constrained within the channel member and interaction of the gas molecules with the flat and smooth surfaces of the perforated member (14) influence momentum of the gas molecules so that they are directed towards the outlet (18). In one embodiment, the channel member (12) is formed as a helix and the perforated elements are disk-shaped. An alternative embodiment is provided having the channel member (12) configured as a spiral and the perforated elements as cylindrical skirts. The pump provides significant improvements in pump capacity, reduced power consumption and size of pump.
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