Equipment for air filtration systems in shelters and safe rooms

Abstract

The present invention relates to a dual or multi purpose wall sleeve 10 (Fig. 2) configured to be embedded in a concrete wall of a CBRN protected space and a method thereof enabling simple installation of both an air filtration system and a split type air conditioning system in shelters and safe rooms. The device comprises an open cabinet (20) facing the protected space, at least partially embedded in the concrete wall. A venting passage (37) formed at a rear wall of the cabinet airflow coupling the cabinet and an external environment at the outer side of the concrete wall. The venting passage (37) and at least a first portion (32) of the cabinet are configured to contain at least a portion of a CBRN filtration system. And at least one sealable passage (46) made to a rear (22) or a side wall of the cabinet in conjunction with a second portion (42) of the cabinet, being configured for sealed passage of conduits of a split type air conditioning system, between an external environment and the protected space, while maintaining blast protection and air tightness. The method relates to implementation of a wall passage for a split type air conditioning system and a wall passage for a CBRN filtration system, in a dual purpose wall sleeve 10, configured to be embedded in a concrete wall of a CBRN protected space. in additional embodiments, the multi purpose wall sleeve further provides sealed passages for additional utility services including electrical power cables, communication cables, water pipes and a supplemental ventilation duct, thereby consolidating multiple services through a single blast-resistant cabinet while maintaining gas-tight sealing.

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