| 摘要 |
The specification discloses a novel Coalescing Demister having, depending on the direction of air flow, an inner or outer prefilter-precoalescer subassembly consisting of one or more layers of glass fiber cloth sandwiched between two screen-type retainers, and an inner or outer coalescing subassembly consisting of an inner and outer perforated retainer having a formed glass fiber coalescing media formed there between, together with a layer of synthetic cloth to act as an antichanneling layer, if desired. The prefilter-precoalescer subassembly, and the coalescing subassembly with drain and anti-migration layers are potted between two end caps with suitable openings therein for the normal oil scavenging tubes. An air gap between the two subassemblies is physically maintained by the end caps, and an air flow barrier is provided around the lower periphery of the inner or outer perforated retainer, depending on the direction of air flow, to provide for accumulation of the coalesced liquid and its flow by gravity back through the prefilter-precoalescer subassembly against the air flow.
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