ビスコシールのガス巻込み現象

概要

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Gas ingestion phenomena occur at a gas-liquid (air-sealant) interface in a viscoseal, which is a kind of noncontact seal, and the ingested gas adversely affects the performance of the viscoseal. A new vacuum pump taking advantage of the gas ingestion phenomena has been proposed by the authors. In this paper, the characteristics of the gas ingestion phenomena are described and the performance of the proposed vacuum pump is discussed with reference to the experimental results. Experiments were carried out using an apparatus with a threaded shaft (480-4300rpm) with 40mm diameter, 145mm length and 0.2mm clearance between shaft and housing. Water and silicone oilwere used as sealant.
1996-05-25