Patent ID: 9072202
Filing Date: 2015-06-30
Classification: B01D,F04D,H05K

Abstract:
1. A method for cleaning at least one filter of an electrical device, wherein the electrical device comprises a plurality of inlet fans each having a normal-operation flow direction adapted to force air into a housing of the electrical device during normal operation of the electrical device and a plurality of outlet fans each having a normal-operation flow direction adapted to draw air out of the housing of the electrical device during the normal operation of the electrical device, the method comprising: during a filter cleaning operation, reversing the normal-operation flow direction of a first inlet fan of the plurality of inlet fans and maintaining the normal-operation flow direction of other inlet fans of the plurality of inlet fans, wherein the first inlet fan is associated with a first filter of the electrical device; and during the filter cleaning operation, reversing the normal-operation flow direction of each of the plurality of outlet fans to cause all of the plurality of outlet fans to force air into the housing so as to increase pressure within the electrical device housing during the filter cleaning operation to purge particulate matter from the first filter.