F - Mech Eng,Light,Heat,Weapons – 25 – C
Patent
F - Mech Eng,Light,Heat,Weapons
25
C
62/8, 20/15.1
F25C 1/12 (2006.01) A01G 9/24 (2006.01) F25D 3/00 (2006.01)
Patent
CA 1062028
A B S T R A C T To prevent the rupturing, by the expansion of the water upon freezing, of a water-freezing ice-storing reservoir and at the same time release the warmer air after producing the freezing of the water into ice, the interior of the reservoir is surrounded by a duplex wall structure or anti-freeze bar- rier of highly insulating material, such as the expanded pol- ystyrene plastic know commercially as styrofoam, in the form of slabs spaced inward from the tank wall by compression springs so that the inner body of water within the duplex insulating anti-freeze barrier is frozen by freezing the air entering that body through multiple pipes from the outside at- mosphere in winter time while the outer body of water adjac- ent the tank wall of the reservoir but outside the insulating wall thereof is protected from freezing by the insulating ef- fect of the slabs. At the same time, the air after extending its freezing effect upon the internal body of water is per- mitted to escape through offset or staggered interstices be- tween the individual slabs while freezing of the water between the slabs is prevented by the circuitous path which the es- caping air is forced to follow. The outer wall of slabs at its upper end is provided with multiple ports through which the escaping air passes into the air space above the water level in the tank and thence to the outside atmosphere through an outlet conduit . The outer wall of slabs is secured at its upper end to the tank ceiling, whereas the inner wall of slabs is divided into multiple tiers of slabs, the slabs of each tier being held together by tie members, such as end- less metal bands, the weights of which offset the buoyancy of the slabs yet permit the slabs of each tier to float as a unit while the escaping air can force its way outward through he interstices between the slabs into and upward through the unfrozen outer body of water into the outer at- mosphere.
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