DEVICE AND METHOD FOR TESTING BLOCK FILTERS
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United States of America Patent
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Issued Date -
Nov 7, 2013
app pub date -
Apr 30, 2013
filing date -
May 1, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Testing devices and methods for detecting defects in block filters using temperature differences created by a fluid flow are provided. The testing is relatively fast, inexpensive, and non-destructive, which may allow for testing a relatively large sampling of filters, and possibly all filters produced in a manufacturing process. In one embodiment, the device includes a fluid drive system adapted to create a fluid flow through the filter media. A thermal imaging system is configured to take a thermal image of the filter media. A portion of the filter media without a defect may have a different temperature than a portion of the filter media with a defect. In this manner, a temperature difference detected by the thermal imaging system may indicate that the filter media has a defect. The device may include a fixture for supporting the filter, and may allow for manual or automatic rotation of the filter.
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