F - Mech Eng,Light,Heat,Weapons – 24 – H
Patent
F - Mech Eng,Light,Heat,Weapons
24
H
126/110, 26/144
F24H 9/00 (2006.01) B23P 15/00 (2006.01) F24H 1/18 (2006.01)
Patent
CA 2010115
Water Heater and Method of Fabricating Same ABSTRACT OF THE DISCLOSURE A water heater (20) which may be either gas or electric and designed for use in either residential or commercial applications includes a generally cylindrical molded plastic inner water tank (21) and a generally cylindrical molded plastic outer shell (27) which is sized somewhat larger than the outside diameter of the tank and is disposed around the tank so as to define an annular clearance space (24) between the shell (22) and the tank (21). By means of covers (23, 51) and end members (50) the clearance spaces (24, 54) between the tank (21) and the shell (22) are sealed closed so that a vacuum can be drawn on this closed clearance space and thereby provide thermal insulation for the inner water tank by means of the vacuum. A related construction includes a double-walled outer shell (215) wherein the two walls (218, 219) are spaced apart from one another so as to define a clearance space (222) therebetween. This clearance space is sealed closed and a vacuum drawn in order to provide the requisite insulation for the inner water tank (211) which is disposed on the interior of the shell (215).
Smart & Biggar
Soltech Inc.
LandOfFree
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