US 7,544,059 B2
	Door sealing device for industrial furnace
Mats Gartz, Sollentuna (Sweden)
Assigned to AGA AB, Lidingo (Sweden)
Filed on May 25, 2007, as Appl. No. 11/802,808.
Claims priority of application No. 0700628 (SE), filed on Mar. 14, 2007.
Prior Publication US 2008/0223264 A1, Sep. 18, 2008
Int. Cl. F27D 1/18 (2006.01)

U.S. Cl. 432—237  [432/250; 110/173 R; 110/180]

20 Claims

1. Door sealing device for an industrial furnace which is vertical and opened vertically, characterized in that each one of the side edges (4a, 4b) of the door (3) is arranged to run within and along a respective elastic tube (5a, 5b) that has a longitudinal slit (6a, 6b) and extends vertically, in that each tube is fixed in relation to the furnace, in that the tubes (5a, 5b) are designed to spring back towards a respective position in which the slit (6a, 6b) is closed, and arranged to enclose the side edge (4a, 4b) of the door (3) along essentially the whole length of the side edge (4a, 4b) when the door (3) is in its closed position, and in that a liquid coolant is arranged to stream through the tubes (5a, 5b) and essentially fill up the whole space defined by the combination of the inner surfaces of each tube (5a, 5b) and the outer surfaces of the respective side part of the door (3).