Filter unit for a heat exchanger

摘要

A filter unit comprises at least a filter (25) mounted upstream and/or downstream of a delivery pipe (12) and/or an outlet pipe (14) disposed on a wall (11) of a heat exchanger (20). The filter (25) is provided with filter means (18) contained in a seating made in a containing body (16) which has passage ways (28) that put the seating in communication with the delivery pipe (12) and/or the outlet pipe (14) and which comprises first attachment means (22). A second attachment means (24) is provided, made directly on the wall (11), mating with the first attachment means (22) and cooperating therewith so as to mount the filter (25) on the wall (11), so that during use the passage ways (28) are adjacent and in close proximity to the wall (11).