Insulated chimney assembly
AssigneeInterpace Corporation
InventorsJames P. Baileys, Warren R. Hedrick
Life of this patent
Estimating the term…
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 intermediate 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).
Claims6
In a chimney assembly for use with flue gases having a wide range of temperature excursions, wherein the assembly comprises axially connectable linear sections, each having substantially cylindrical and concentrically positioned inner, intermediate and outer sleeves, and means for securing the intermediate sleeve to the outer sleeve, the improvement which comprises:
- solid pack insulation material between the intermediate sleeve and the outer sleeve;
- means for securing only one end portion of the inner sleeve to an end portion of the intermediate sleeve while maintaining the remaining portions of the inner sleeve in a floating relationship relative to the intermediate sleeve so as to allow for unrestrained thermal expansion and contraction of the inner sleeve in an axial direction with respect to the intermediate sleeve;
- and
- the remaining portions of the inner sleeve are maintained in a spaced apart relationship relative to the intermediate sleeve so as to provide a spatial insulative air gap therebetween for radially outward thermal expansion of the inner sleeve.
Dependencies are inferred from the claim text.