Filtering apparatus
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United States of America Patent
Stats
-
Jun 10, 2003
Grant Date -
Dec 5, 2002
app pub date -
Jul 17, 2001
filing date -
May 30, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A filtering apparatus for a reflow oven includes a contaminated-gas inlet for receiving contaminated gas from a reflow oven; a filtering device configured to filter the received contaminated gas; a returned gas outlet for returning filtered gas to the reflow oven; a gas removal arrangement for allowing gas to escape from the apparatus; and a control arrangement for controlling the rate of gas flow through the gas removal arrangement such that in use the flow rate of contaminated gas flowing from a hotter region of the reflow oven to a cooler region of the reflow oven is controlled.
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