Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Patent
1986-06-27
1988-11-08
Richman, Barry S.
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
210149, 210168, 210315, 210DIG13, B01D 2710
Patent
active
047832711
ABSTRACT:
A filter assembly for removing particles from a fluid which comprises first and second filters, each having a porous filter medium. The mean pore diameter of the porous filter medium of the second filter is greater than the mean pore diameter of the porous filter medium of the first filter. The filter assembly further comprises structure for directing the fluid serially through the first filter and then through the second filter, a mechanism for sensing the temperature of the fluid, and a valve arranged in parallel with the first filter and serially with the second filter. The valve is coupled to the temperature-sensing mechanism so that at least a portion of the fluid is directed around the first filter in response to a predetermined fluid temperature. For example, in the illustrated embodiment, the fluid is directed around the first filter when the fluid temperature is below a predetermined value.
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Jordan Richard D.
Pall Corporation
Richman Barry S.
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