多濾紙PM10-PM2.5採樣器MULTI-FILTER PM 10-PM 2.5 SAMPLER

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

13/419,532

專利證號

US 9,086,341 B2

專利獲證名稱

多濾紙PM10-PM2.5採樣器MULTI-FILTER PM 10-PM 2.5 SAMPLER

專利所屬機關 (申請機關)

國立交通大學

獲證日期

2015/07/21

技術說明

本研究開發了一個新穎的多濾紙PM10-PM2.5採樣器(Multi-Filter PM10-PM2.5 Sampler, MFPPS)。MFPPS利用一PM10慣性衝擊器作為採樣入口，並控制其總採樣流量為33.4 L/min。PM10慣性衝擊器下方為一Y型分歧管，可將流量均分成兩道，其中一道會進入四個PM10濾紙匣，而另一道則導入PM2.5慣性衝擊器，並在其下方四個PM2.5濾紙匣完成PM2.5樣本採集。MFPPS採用一個主要由二個質量流量計組成的主動式流量控制系統，根據環境溫壓的變化控制質量流量計的輸出，使得通過四個PM10及四個PM2.5頻道的總流量可固定在16.7 L/min。為了在僅使用二個質量流量計的情況下使四個PM10及四個PM2.5濾紙之間的流量均勻，本研究在各濾紙匣下方裝有一流孔板，使得各個頻道的壓損提升進而讓流量達到均勻。 This study developed a novel multi-filter PM10-PM2.5 sampler (MFPPS) which enables the collection of four PM10 and four PM2.5 samples simultaneously. The MFPPS uses a PM10 impactor as the inlet and operates at 33.4 LPM. After the inlet, the aerosol flow is divided by half by a Y-type fitting. Half of the flow is directed into four PM10 filter cassettes, while the other half is directed into four PM2.5 filter cassettes after the aerosols are further classified by a PM2.5 impactor. An active flow control system consisting of two mass flow controllers (MFCs), one for PM10 and the other for PM2.5, is used to fix the total flow rate of 16.7 LPM for four PM10 or four PM2.5 channels based on the ambient pressure and temperature. To ensure flow rate uniformity through each of the four PM10 or four PM2.5 filter cassettes, an orifice is assembled behind each of the filter cassettes to increase the pressure drop, such that the flow rates of eight sampling lines are nearly equal using just 2 MFCs.

備註

本部(收文號1100065219)同意該校110年10月27日陽明交大研產學字第1100036963號函申請終止維護專利(陽明交大)

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