Patent ID: 6592826
Filing Date: 2003-07-15
Classification: B01L,G01N,Y10T

Abstract:
A vacuum system for the directed transport of a substance, having a vacuum chamber (V) which comprises a first permeable means (F1) and a second permeable means (F2), which are arranged one above the other, and two vacuum regions (VO, VU) an upper vacuum region (VO) being defines by a space between the first permeable means (F1) and the second permeable means (F2) and a lower vacuum region (VU) being defined by a space between the second permeable means (F2) and a base of the vacuum chamber,a vacuum pump RD4), a first electronically controlled valve (V1) for the lower vacuum region (VU), a second electronically controlled valve (V2) for the upper vacuum region (VO), and a vacuum trap (VF) arranged at the lower vacuum region (VU) for receiving a waste volume, a third valve (V3), arranged upstream of the first electronic valve (V1), for breaking a creeping vacuum in the loser vacuum region (VU), wherein: vacuum is generated and established in each of the upper and the lower vacuum regions (VO, VU) independently of one another so that a substance is transported in two steps through the first permeable means (F1) and the second permeable means (F2) into the lower vacuum region (VO).