UNIVERSAL HEAT ACCUMULATION FIREPLACE Russian patent published in 2010 - IPC F24B1/18 

FIELD: heating.

SUBSTANCE: universal heat accumulation fireplace comprises body, shaft with glased fire-resistant door, ash pit with fire bars, channel smoke-circulating system connected to smoke stack. It is equipped with heat exchange and heat accumulation chamber arranged in lower part of fireplace and filled with heat absorbing material; ash pit bottom contains a closed hole that communicates to chamber of heat exchange and heat accumulation, and also with ash pit chamber; slot is left under frame of shaft door for passage of controlled amount of air from room into shaft. Back inclined wall of shaft is equipped with smoke cog, and they are faced with two stainless metal sheets so that one sheet is tightly pressed to surface of masonry, and the second sheet, with perforated holes and their moulded lower edges, is suspended onto four pins towards the first sheet, so that conic adjustable slot is formed between sheets as slantwise expanded upwards and entering smoke chamber, forming therefore deflector chamber, for soot afterburning and passage of the main gas flow from furnace and secondary air supplied by two tubes mounted with its one end into ash pit chamber, and its second end is mounted into lower part of deflector chamber. To increase draught of waste gases, there is a tubular ejector installed upstream smoke cog, connecting cavity of smoke chamber with lifting channel of smoke-circulating system. In back rear wall, along edges of lifting channel of smoke-circulating system, there are two convection channels provided for inlet of cold air at the bottom and outlet of heated air into heated room at the top.

EFFECT: increased heat efficiency of fireplace.

4 cl, 4 dwg