US 2017/0284927 A1 · FILTER REPLACEMENT LIFETIME PREDICTION

Abstract

Methods for controlling air filtration in an enclosure include measuring contaminants in an internal and an external environment using respective internal and external contaminant sensors. An increase in a corrosion rate is determined for objects in the enclosure if unfiltered external air intake is increased for cooling based on the measured contaminants in the internal and external environments. An air pressure needed to filter external air using a filter in the filtered air intake is determined. An intake of unfiltered external air is controlled by bypassing the filter in the filtered air intake, based on the corrosion rate increase and the determined air pressure. A predicted filter lifetime is updated based on the intake of unfiltered external air. A warning is provided if the contaminant sensor information associated with the filter exceeds an instantaneous failure threshold or if the determined remaining filter lifetime falls below a filter lifetime threshold.

Claims13

Dependent claims

A method for controlling air filtration in an enclosure having a filtered air intake and an unfiltered air intake, comprising:

measuring contaminants in an internal and an external environment using respective internal and external contaminant sensors;
determining an increase in a corrosion rate for one or more objects in the enclosure if unfiltered external air intake is increased for cooling based on the measured contaminants in the internal and external environments;
determining an air pressure needed to filter external air using a filter in the filtered air intake;
controlling an intake of unfiltered external air by bypassing the filter in the filtered air intake, based on the corrosion rate increase and the air pressure needed to filter external air;
updating a predicted filter lifetime based on the intake of unfiltered external air, comprising:
building a filter effectiveness history based on contaminant sensor information associated with a filter;
determining a rate of filter consumption with a processor based on the filter effectiveness history;
and
determining a remaining filter lifetime based on the determined rate of filter consumption;
and
providing a warning if the contaminant sensor information associated with the filter exceeds an instantaneous failure threshold or if the determined remaining filter lifetime falls below a filter lifetime threshold.

8 more elements

Dependencies are inferred from the claim text.

Filter replacement lifetime prediction

Life of this patent

Filter replacement lifetime prediction

Life of this patent

Abstract

Claims13