Appeal No. 1998-0425 Page 35
Application No. 08/272,527
13. The apparatus according to claim 12 wherein said
measuring means comprises means for measuring pressure and/or
flow of gas through one or more diffusion elements.
14. The apparatus according to claim 12 wherein said
measuring means comprises means for measuring said changes
with sufficient precision to maintain the dynamic wet pressure
across the diffusion elements in a range not to exceed about
15 inches of water gauge above said base condition.
15. The apparatus according to claim 12 wherein said
measuring means comprises means for measuring the pressure and
flow of gas through at least one individual diffusion element
among said plurality of diffusion elements.
16. The apparatus according to claim 12 wherein said
measuring means comprises means for measuring the hydrostatic
pressure of said liquid at about the elevation of the
diffusion elements, means for measuring gas pressure within a
plenum downstream of the flow-regulating means, and means for
measuring the gas pressure within a header supplying gas to
said air flow regulator.
17. The apparatus according to claim 12 wherein said
liquid treatment apparatus includes means responsive to a
change in dynamic wet pressure across one or more of said
diffusion elements for initiating or controlling or
terminating the flow of cleaning gas in said network.
18. The apparatus according to claim 12 wherein said
measuring means includes means for measuring the dynamic wet
pressure across one or more of said diffusion elements.
19. The apparatus according to claim 12 wherein said
diffusion elements are divided into two or more groups, said
measuring means includes means for measuring flow of gas
through said groups of elements, and said liquid treatment
apparatus includes means for varying the flow of gas to a
portion of said groups of elements in response to said
measurement of gas flow.
Page: Previous 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 Next
Last modified: November 3, 2007