Fireplace construction with adaptable combustion air inlet

Stoves and furnaces – Liquid heater

Patent

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Details

126131, 126129, 237 51, F24B 700

Patent

active

042853265

ABSTRACT:
A prebuilt fireplace construction for installation in a living space includes a housing, a firebox within the housing with an open forward side adapted to be sealed by glass doors, an outlet for combustion gases, an inlet for combustion air and has a base structure supporting the housing through which an inlet duct for combustion air extends. One end of the combustion air duct is connected to the combustion air inlet. The other end of the duct may connect to an optionally used air intake conduit so that exterior air may be delivered to the combustion air inlet, or receive air from a room interior which is drawn into the firebox through the base structure. A damper within the duct permits adjustment of external air flow into the firebox from either source and can be positioned to close the combustion air duct to prevent drafts when the fireplace is not in use.

REFERENCES:
patent: 921019 (1909-05-01), Speer
patent: 2103171 (1937-12-01), Nilson
patent: 2863443 (1958-12-01), Hoffman
patent: 3970067 (1976-07-01), Vaughn
patent: 4004731 (1977-01-01), Zung
patent: 4068649 (1978-01-01), Johnson
patent: 4074679 (1978-02-01), Jensen
patent: 4095581 (1978-06-01), Billmeyer et al.
patent: 4112913 (1978-09-01), Shimek et al.
patent: 4117827 (1978-10-01), Billmeyer
patent: 4179065 (1979-12-01), Zung

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