Patent ID: 8715046

Claim:
A ductless fumehood system, the system comprising: at least one ductless fumehood, the ductless fumehood comprising: a housing; a workspace formed within the housing; a door for selectively closing off the workspace; an air inlet for introducing air into the workspace; a plurality of independent modules mounted to the housing in side-by-side relation so as to collectively close off an opening in the housing, each of the independent modules being configured for receiving air directly from the workspace, purging unwanted substances from that air, and then exhausting filtered air to the ambient room atmosphere, wherein each of the independent modules comprises: a module filter for purging unwanted substances from the air received from the workspace; a module filter sensor for determining proper functioning of the module filter; and a module exhaust fan for moving air from the workspace, through the module filter and out into the ambient room atmosphere; and a central processing unit disposed on the ductless fumehood, for (i) controlling the operation of the active elements of all of the plurality of independent modules, (ii) detecting a function failure in any of the plurality of independent modules and (iii) activating an alarm in the event of a function failure within any of the plurality of independent modules.