Water heater construction and method of making same

Details Water heater construction and method of making same Water heater construction and method of making same

F - Mech Eng,Light,Heat,Weapons

22

B

122/150

F22B 37/22 (2006.01) B29C 44/12 (2006.01) B29C 67/00 (2006.01) B65D 90/04 (2006.01) F24H 1/18 (2006.01)

Patent

CA 1321738

WATER HEATER CONSTRUCTION AND METHOD OF MAKING SAME ABSTRACT A water heater construction including an inner tank for containing water surrounded in spaced apart relationship by an outer shell. An annular pocket of material is located in the annular space between the inner tank and outer sleeve. An expanded foam thermal insulation fills the pocket and, thusly, the annular space between the inner tank and outer shell. A method of making the water heater construction includes the steps of locating one end of a sleeve of flexible material over the interior wall surface of the outer shell, affixing the sleeve to the interior wall surface of the tank, locating the other end of the sleeve over the exterior wall surface of the water heater tank, affixing the sleeve to the exterior wall surface of the water heater tank, and positioning the outer shell concentrically over the inner tank whereupon a first portion of the length of the sleeve turns inside out to circumferentially overlay a portion of the length of the exterior wall surface of the inner water heater tank, a second portion of the length of the sleeve circumferentially overlays a portion of the length of the interior wall surface of the outer shell, and an intermediate portion of the length of the sleeve folds back over to form a bottom annular wall across the annular space, thereby forming a pocket in the annular space. The annular pocket is filled with an insulation material. - 1 -

588157

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