×

Method and apparatus for analyzing gas components and apparatus for collecting sample gases

  • US 5,714,676 A
  • Filed: 06/06/1995
  • Issued: 02/03/1998
  • Est. Priority Date: 06/06/1994
  • Status: Expired due to Fees
First Claim
Patent Images

1. An apparatus for collecting gas components comprising:

  • a diffusion scrubber comprising an inner tube and an outer tube, said inner tube comprising a gas penetrating membrane through which sampling gases only may penetrate, wherein sampling gases flow through inside of said inner tube and an absorption liquid flows through between said inner and other tubes so that said absorption liquid absorbs said sampling gases penetrated through said membrane from the inside of the inner tube;

    an absorption liquid feeding pump upstream from said diffusion scrubber for feeding said absorption liquid between said inner and outer tubes of said diffusion scrubber; and

    at least a flow passage switch valve downstream from said diffusion scrubber, said flow passage switch valve having at least three flow passages, each of which has a port, one of said ports being coupled to said diffusion scrubber;

    an absorption liquid reservoir coupled to one of said ports other than said one port coupled to said diffusion scrubber, said reservoir reserving said absorption liquid for subsequent feeding of said absorption liquid through said flow passage switch valve;

    a circulation flow passage for said absorption liquid, said circulation flow passage connecting among said flow passage switch valve, said absorption liquid feeding pump and said diffusion scrubber; and

    a non-circulation flow passage for said absorption liquid, said non-circulation flow passage connecting said absorption liquid reservoir through said flow passage switch valve and said absorption liquid feeding pump into said diffusion scrubber;

    wherein said flow passage switch valve provides the current flow passage switch between said circulation and non-circulation flow passages.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×