Patent ID: 6415724
Filing Date: 2002-07-09
Classification: F23M

Abstract:
A boiler safety access door assembly for use in high temperature regions of a boiler or furnace for accessing an interior region of the boiler or furnace through a wall opening in a side of the boiler or furnace, the safety access door assembly comprising:a door frame positioned around the wall opening and having a door opening sized to permit a stretcher to pass unobstructed therethrough; a door panel pivotally connected to the door frame outside the boiler or furnace and having a panel interior side facing the boiler or furnace interior region and an opposite panel exterior side facing away from the boiler or furnace interior region; and, a water jacket on the panel exterior side having a water inlet, a water outlet, and a plurality of horizontally extending baffles defining a serpentine path for conveying water through the water jacket between the water inlet and water outlet over the panel exterior side, the serpentine path covering substantially all of an area of the panel exterior side corresponding to an area of the panel interior side, subjected to the temperatures of the interior region of the boiler or furnace.