초록 ▼

A hot water heater (40) has an inner storage tank (2), a lower skirt ring (42, 60, 74, 84, 110, 116) supporting and spacing the tank above a support surface (10a), and an outer jacket (46, 66, 80, 90, 98, 104, 122) around the inner storage tank and spaced outwardly therefrom to define an annular cav

A hot water heater (40) has an inner storage tank (2), a lower skirt ring (42, 60, 74, 84, 110, 116) supporting and spacing the tank above a support surface (10a), and an outer jacket (46, 66, 80, 90, 98, 104, 122) around the inner storage tank and spaced outwardly therefrom to define an annular cavity space (22) therebetween. The skirt ring mates with the outer jacket and forms a dam sealing the annular space. Foamed insulation introduced as a liquid into the annular space hardens to form an annular insulation layer (13) around the inner storage tank. The dam prevents leakage of liquid therepast. Inwardly and outwardly extending skirt ring flanges (44, 62, 78, 88, 114, 120) are disclosed, together with various outer jacket constructions (46, 66, 80, 90, 98, 104, 122), including turned lower end flanges (52, 102, 108), and straight lower ends (68, 81, 92, 126).

대표청구항 ▼

An insulated fluid storage unit comprising: an inner storage tank; a lower skirt ring supporting and spacing said inner storage tank above a support surface, said skirt ring comprising a sidewall extending upwardly from said support surface and a flange extending radially outwardly from said sidewal

An insulated fluid storage unit comprising: an inner storage tank; a lower skirt ring supporting and spacing said inner storage tank above a support surface, said skirt ring comprising a sidewall extending upwardly from said support surface and a flange extending radially outwardly from said sidewall; an outer jacket around said inner storage tank and spaced outwardly therefrom to define an annular space therebetween, said outer jacket having a lower end with a radially inwardly extending flange overlapping at least a portion of said radially outwardly extending flange of said skirt ring and mating therewith to form a dam sealing said annular space; foamed insulation introduced as a liquid into said annular space and hardening to form an annular insulation layer around said inner storage tank, said dam preventing leakage of said liquid therepast; sealing means sealing the interface between said flanges, to provide further sealing of said dam in said annular space.