Particulate products of combustion detector for closure frame

摘要

A door frame having a head member defining the top of a door opening with the head member optionally supporting an electrically actuated door holder-closer. A module having a frame shell section and a detector for the particulate products of combustion supported on the interior of the frame shell section with access openings being formed in the shell section to enable particulate products of combustion to pass through the shell to the detector. A socket formed in the head member receives the module so that any particulate products of combustion flowing through the door opening pass through the module access openings to actuate the detector. The detector is electrically connected to the door holder-closer to effect closing of an otherwise open door in response to the detection of the products of combustion. The detector may be either an ionization or photocell type detector.