Filter assembly, and pre-filter device and pre-filter mounting plate therefor

摘要

A filter assembly (6) comprises a mounting support (11) defining a fluid outlet opening in the support, a filter device (9) extending across the opening, a fastening arrangement (12) operative to locate the filter device against a seat (11a) of the mounting support (11) so that the filter device (9) extends across the opening for filtering a fluid medium flowing through the outlet opening and the filter device (9), and a pre-filter device (8) secured, between the fastening arrangement (12) and the filter device (9), for pre-filtering fluid medium flowing successively through the upstream pre-filter (8) and downstream filter device (9). The pre-filter device (8) comprises a filter mounting plate (15) located upstream of the filter device (9) and held there by the fastening arrangement (12), relative to the fluid flow direction, and at least one filter element (16) removably mounted on the mounting plate (15).

主权项

1. A filter assembly comprising:
a mounting support defining a fluid outlet opening in the support; a filter device; a fastening arrangement operative to locate the filter device against a seat of the mounting support, so that the filter device extends across the opening for filtering fluid medium flowing through the outlet opening and filter device; and a pre-filter device secured, between the fastening arrangement and the filter device, by the fastening arrangement, for pre-filtering fluid medium flowing successively through the pre-filter device and the filter device; wherein the pre-filter device comprises a filter mounting plate located upstream of the filter device relative to the fluid flow direction, under the action of the fastening arrangement, and at least one filter element removably mounted on the filter mounting plate, to enable the filter element to be removed and replaced by a replacement filter element.