Dual flow heating apparatus

In a forced air heating apparatus having a heating compartment and an associated air conduit means connected thereto;

• the improvement comprising heater means disposed within said conduit means for heating an intake ambient air stream drawn into said conduit means at a first location, said conduit means enabling transport of a heated air stream from said heater means into said heating compartment at a second location, an air fan means disposed within said apparatus and having a first means thereof operable to forcibly draw said heated air stream through said air conduit means and having a second means thereof operable to establish a recirculated forced air flow internally within said heating compartment without entry of said internal forced air flow into said air conduit, said first and second air fan means enabling mixing of said heated air stream with said internal forced air flow, an air valve means located within said air conduit means to enable variable flow of said heated air stream into said heating compartment, and vent means formed in said heating compartment to enable the outflow of heated air from said heating compartment.

In a forced air heating apparatus having a heating compartment and an associated air conduit means connected thereto;

• the improvement comprising heater means disposed within said conduit means for heating an intake ambient air stream drawn into said conduit means at a first location, said conduit means enabling transport of a heated air stream from said heater means into said heating compartment at a second location, an air fan means disposed within said apparatus and having a first means thereof operable to forcibly draw said heated air stream through said air conduit means and having a second means thereof operable to establish a recirculated forced air flow internally within said heating compartment without entry of said internal forced air flow into said air conduit, said first and second air fan means enabling mixing of said heated air stream with said internal forced air flow, a heat collector duct connected to said air conduit means at a position contiguous to said second location, said heat collector duct enabling circulation of said heated air stream into said air flow means, and vent means formed in said heating compartment to enable the outflow of heated air from said heating compartment.

In a forced air heating apparatus having a heating compartment and an associated air conduit means connected thereto;

• the improvement comprising heater means disposed within said conduit means for heating an intake ambient air stream drawn into said conduit means at a first location, said conduit means enabling transport of a heated air stream from said heater means into said heating compartment at a second location, an air fan means disposed within said apparatus and having a first means thereof operable to forcibly draw said heated air stream through said air conduit means and having a second means thereof operable to establish a recirculated forced air flow internally within said heating compartment without entry of said internal forced air flow into said air conduit, said first and second air fan means enabling mixing of said heated air stream with said internal forced air flow, said air conduit means comprising flue ways located adjacent to a plurality of the outer walls of said heating compartment and a heating air chamber connected to said flue ways and extending therefrom into said second location whereby heat exchange is enabled from said flue ways and from said heated air chamber into said heating compartment indirectly through the walls thereof, and vent means formed in said heating compartment to enable the outflow of heated air from said heating compartment.

A forced air heating apparatus having a heating compartment and an associated air conduit means connected thereto;

• comprising heater means for heating an intake ambient air stream drawn into said conduit means at a first location, said conduit means enabling transport of a heated air stream from said heater means into said heating compartment at a second location, an air fan means disposed within said apparatus and having a first means thereof operable to forcibly draw said heated air stream through said air conduit means and having a second means thereof operable to establish a recirculated forced air flow internally within said heating compartment without entry of said internal forced air flow into said air conduit, said first and second air fan means enabling mixing of said heated air stream with said internal forced air flow, an air valve means located within said air conduit means to enable variable flow of said heated air stream into said heating compartment, and vent means formed in said heating compartment to enable the outflow of heated air from said heating compartment.

A forced air heating apparatus having a heating compartment and an associated air conduit means connected thereto;

• comprising heater means for heating an intake ambient air stream drawn into said conduit means at a first location, said conduit means enabling transport of a heated air stream from said heater means into said heating compartment at a second location, an air fan means disposed within said apparatus and having a first means thereof operable to forcibly draw said heated air stream through said air conduit means and having a second means thereof operable to establish a recirculated forced air flow internally within said heating compartment without entry of said internal forced air flow into said air conduit, said first and second air fan means enabling mixing of said heated air stream with said internal forced air flow, a heat collector duct connected to said air conduit means at a position contiguous to said second location, said heat collector duct enabling circulation of said heated air stream into said air flow means, and vent means formed in said heating compartment to enable the outflow of heated air from said heating compartment.

A forced air heating apparatus having a heating compartment and an associated air conduit means connected thereto;

• comprising heater means for heating an intake ambient air stream drawn into said conduit means at a first location, said conduit means enabling transport of a heated air stream from said heater means into said heating compartment at a second location, an air fan means disposed within said apparatus and having a first means thereof operable to forcibly draw said heated air stream through said air conduit means and having a second means thereof operable to establish a recirculated forced air flow internally within said heating compartment without entry of said internal forced air flow into said air conduit, said first and second air fan means enabling mixing of said heated air stream with said internal forced air flow, said air conduit means comprising flue ways located adjacent to a plurality of the outer walls of said heating compartment and a heated air chamber connected to said flue ways and extending therefrom into said second location whereby heat exchange is enabled from said flue ways and from said heated air chamber into said heating compartment indirectly through the walls thereof, and vent means formed in said heating compartment to enable the outflow of heated air from said heating compartment.