High efficiency heat return fireplace

Details High efficiency heat return fireplace High efficiency heat return fireplace

1977-07-29

1980-03-18

King, Lloyd L.

Stoves and furnaces

Liquid heater

F24B 700

Patent

active

041933877

ABSTRACT:
A high efficiency heat return fireplace unit is provided which includes an enclosure having outer and inner housings. The inner housing defines a fire box which communicates with the atmosphere through a suitable flue-chimney structure. The inner housing is spaced from the outer housing so as to define a heat chamber about the fire box. At least the bottom wall of the inner housing has an undulating shape in cross section so that the bottom wall defines a series of heat pipes along the bottom of the fire box. The heat pipes communicate with the heat chamber. A plurality of hot air returns extend depthwise along the top of the fire box. The hot air returns also communicate with the heat chamber and return heated air to the room in which the fireplace is located. In the preferred embodiment, the side walls of the inner enclosure also have an undulating shape in cross section so that a large surface area is available for heat transfer between the fire box and the heat chamber, thereby greatly increasing the heat transfer efficiency of the fireplace.

REFERENCES:
patent: 174829 (1876-03-01), Lucas
patent: 2161723 (1939-06-01), Rutland
patent: 2375318 (1945-05-01), Mudgett
patent: 2743720 (1956-05-01), Dollinger
patent: 2863443 (1958-12-01), Hoffman
patent: 3538719 (1970-11-01), Pradel
patent: 4008707 (1977-02-01), Bartlett
patent: 4026263 (1977-05-01), Boyd
patent: 4059090 (1977-11-01), Shaw

Affiliated with

Also associated with

Rating

High efficiency heat return fireplace does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High efficiency heat return fireplace, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High efficiency heat return fireplace will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1120197