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US 4,231,350 AGranted
Hot water boiler
OwnerDean E. Marshinventor
Life of this patent
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OwnerDean E. Marshinventor
Estimating the term…
A hot water boiler having a dual combustion chamber arrangement capable of burning either solid or fluid fuels, and arranged for acting directly on a heat transfer system generally in direct contact with firebox walls of the combustion chamber arrangement. Disposed atop the combustion chamber arrangement is a heat conserving flue assembly which absorbs heat from smoke and flue gases exhausted from the combustion chamber arrangement and heats a fluid medium which in turn is circulated to the heat transfer means for eventual release for circulation or storage as desired in a residence or other building structure. The heat transfer system includes a fluid containing cavity divided into two parts by a suitable membrane, with pipes being provided penetrating the membrane for permitting transfer of the fluid medium from one part of the cavity to the other, with the heat transfer fluid medium thus being initially heated in the flue assembly, transferred to a first, or uppermost, part of the cavity of the heat transfer system, and subsequently transferred to the lower part of the heat transfer system and discharged entirely from the boiler structure.
A liquid heating device comprising a combustion chamber, an exhaust stack extending upwardly from the combustion chamber and receiving combustion products from said combustion chamber, a liquid jacket associated with the combustion chamber in heat exchange relation thereto, a liquid jacket associated with the stack in heat exchange relation thereto, said liquid jacket associated with the combustion chamber including a horizontal partition defining upper and lower liquid reservoirs, a heated liquid outlet at an upper portion of the lower reservoir, a cold liquid inlet at an upper portion of the jacket associated with the stack, connecting tubes extending between and communicating a lower end of the jacket associated with the stack and a lower portion of the upper reservoir, and vertically elongated flow tubes extending between and communicating an upper portion of the upper reservoir and a lower portion of the lower reservoir whereby the liquid is heated in three vertically oriented stages from the inlet to the outlet.
Dependencies are inferred from the claim text.