Insulated chimney assembly

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E - Fixed Constructions

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H

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E04H 12/28 (2006.01) E04F 17/02 (2006.01) F16L 59/07 (2006.01) F16L 59/14 (2006.01) F16L 59/18 (2006.01) F23J 13/02 (2006.01) F23J 13/04 (2006.01)

Patent

CA 1198873

Insulated Chimney Assembly Abstract Linear sections (101) of a chimney assembly (100) each include concentric outer, intermediate and inner sleeves (102, 104, 106). The inner sleeve (106) is interconnected at its lower portion (140) to the inter- mediate sleeve (104) through spaced apart U-shaped clips (142), while the upper portion of the inner sleeve (106) is allowed to float. The inner sleeve (106) is thus spaced apart from the intermediate sleeve (104) with an insulative air gap (136) therebetween. The air gap (136) and the particular connective arrangement of the inner sleeve (106) to the intermediate sleeve (104) allows for both linear and radial thermal expansion of the inner sleeve (106) caused by high temperature waste flue gases, and also facilitates engagement of adjoining linear sections (101).

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