防止微粒負載效應、具有濕潤衝擊表面的慣性衝擊器

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

106127635

專利證號

I 638683

專利獲證名稱

防止微粒負載效應、具有濕潤衝擊表面的慣性衝擊器

專利所屬機關 (申請機關)

國立交通大學

獲證日期

2019/10/21

技術說明

本發明揭示一種具有濕潤衝擊表面的慣性衝擊器，可防止微粒負載效應。其結構由上殼體、衝擊部及下殼體所組成。其上殼體具有氣體入口及與其連接之圓形噴嘴。衝擊部具有衝擊井，在衝擊井下部為衝擊表面。圓形噴嘴正對於衝擊表面的中心上方設置。在衝擊表面中心具有液體輸入口，透過連續性或間歇性導入液體形成濕潤衝擊表面並可去除微粒堆積，同時液體由衝擊表面上的液體排出路徑排出，下殼體具有氣體出口通道可連接至微粒採樣或監測裝置。本發明能有效地減少因微粒堆積而造成截取直徑下降的問題，能長時間的維持衝擊器的截取直徑，減少微粒的採樣誤差。 An inertial impactor with a wetted impaction plate is disclosed, comprising a upper housing, an impacting part, and a lower housing. The upper housing has an air inlet and a nozzle. The impacting part and upper housing are interlinked, comprising an impacting well. The bottom surface of the impacting well forms an impacting surface above which the nozzle is disposed. A liquid inlet introduces the liquid flow upward at the center of the impaction surface by using a syringe pump to wet the surface and wash off its deposited particles continuously or intermittently. After deposited particles are washed off, drained liquid is drained off by using another syringe pump through a hole drilled at the edge of the well. The lower housing has an air outlet configured to connect to a particle sampling or monitoring device.

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