Environmentally beneficial bypass filter system for use with low

Details Environmentally beneficial bypass filter system for use with low Environmentally beneficial bypass filter system for use with low

1993-07-29

1994-11-29

Drodge, Joseph W.

Liquid purification or separation

Processes

Including controlling process in response to a sensed condition

62195, 184 624, 210741, 210791, 418 89, B01D 1712

Patent

active

053687469

ABSTRACT:
A bypass filter system for use in low pressure, centrifugal type refrigeration equipment which allows complete isolation of a submicron filter element from the lubrication system through use of an inlet line shut-off and a return line shut-off. The filter system utilizes a variable regulator valve for balancing the operating parameters of the various systems involved to permit initial installation and set up, at which point thereafter the variable regulator may be replaced with a fixed regulator for continued operation of the system. Multiple devices for monitoring the filter element condition, verifying flow, detecting moisture, and displaying pressure readings may be used in conjunction with the basic device to enhance reliability and usefulness. The invention may further be enhanced by the utilization of valves which allow samplings of the unfiltered and filtered oil, such samplings being subjected to tests to verify the improved quality of the filtered oil, indicating proper operation of the system, or to verify a system degradation by showing an unimproved filtered sampling.

REFERENCES:
patent: 3163999 (1965-01-01), Ditzler et al.
patent: 3564863 (1971-02-01), Sasselli
patent: 4586875 (1986-05-01), Aman, Jr.
patent: 4618431 (1986-10-01), Hindman et al.

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