US 4,127,107 AGranted

Auxiliary heating device for standard hot water type home heating systems

OwnerEdward L. Melgeorgeinventor

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Abstract

An auxiliary heating device for supplementing the performance of a standard hot water type home heating system with the heat produced by combusting a low cost, readily available fuel is disclosed. The device comprises a cylindrical fire chamber substantially closed at both ends and an elongated annular water chamber closed at both ends surrounding at least a portion of the fire chamber in a noncoaxial relationship thereto. Means are provided for plumbing the water chamber into the main heating system, whereby cool water enters the water chamber and heated water is pumped by the main system's pump to radiators disposed around the home. A combustion air passageway is provided for passing air to the combustion chamber. Means for varying the size of the passageway in response to the temperature of water in the water chamber are also provided so as to control the combustion rate of the fuel. Means for supplying fuel to the combustion chamber are further provided.

Claims8

Dependent claims

An auxiliary heating device for use in combination with a primary heating system of the hot water type including a furnace, a water circulation system, first means for sensing when the water temperature in said water circulation system reaches a first predetermined temperature, and means connected to said first water temperature sensing means for increasing the rate of combustion in the furnace when the water temperature in the water circulation system falls below said first predetermined temperature, said auxiliary device being adapted to burn a lower grade of fuel than the furnace of the primary system and comprising:

(a) a substantially closed combustion chamber having a passageway for providing combustion air to the chamber and a chimney stack for exhausting combustion products therefrom;
(b) a substantially closed water chamber disposed about at least a portion of the combustion chamber;
(c) means for connecting the water chamber with the circulation system of the primary heating system;
(d) second means in fluid communication with said water chamber for sensing when the water temperature in said chamber equals or differs from a second predetermined temperature;
(e) means connected to said second water temperature sensing means for increasing the rate of fuel combustion in said combustion chamber when the temperature of water in the water chamber falls below said second predetermined temperature, and for decreasing the rate of fuel combustion when the temperature of water in the water chamber reaches or exceeds said second predetermined temperature;
(f) wherein said first predetermined temperature is below said second predetermined temperature;
and
(g) means for supplying fuel to the combustion chamber.

5 more elements

Dependencies are inferred from the claim text.