BRIQUETTE BOILER USING COAL

The present invention relates to a briquette boiler using coal. In particular, a boiler, using a briquette that is made of coal as a main component and has a plurality of drilling combustion holes for downward combustion, comprises: an ash tray having an outdoor air inlet to intake the outdoor air; a chamber having at least one outdoor air supply opening drilled at the bottom plate so that the outdoor air having been introduced via the outdoor air inlet is supplied only through the combustion holes of the briquette, and a briquette insertion opening; a cover for opening and closing the briquette insertion opening of the chamber; a combustion tube installed perpendicularly to the top of the bottom plate of the chamber in such a manner as to form a combustion gap between multi-stacked briquettes above the outdoor air supply opening; a partition plate which is configured to form a smoke duct between the combustion tube and the internal chamber and serves to partition a residence chamber where a 1st high-pressure combustion heat that has ascended to the upper part of the chamber after the combustion in the combustion tube remains; a ventilation opening drilled at one side of the partition plate to ventilate the 1st high-pressure combustion heat remaining in the residence chamber to the smoke duct of low pressure; at least one discharge opening drilled at the combustion tube to introduce the 1st high-pressure combustion heat that has been kept in the residence chamber to the combustion gap of low pressure and then discharge to the smoke duct; a water tube built in the chamber to be heated by the combustion heat that is generated in the combustion tube; and a smokestack connected to the bottom of the chamber to exhaust a 2nd heat flowing at the bottom of the smoke duct to the air. La présente invention concerne une chaudière à briquettes qui utilise du charbon et plus particulièrement, une chaudière, qui utilise une briquette laquelle est principalement constituée de charbon et comporte une pluralité d'orifices de combustion percés assurant la combustion vers le bas. La chaudière comprend un plateau à cendres comportant une entrée d'air extérieur pour introduire l'air extérieur; une chambre comportant au moins une ouverture d'alimentation en air extérieur percée au niveau de la plaque inférieure de sorte que l'air extérieur ayant été introduit par l'entrée d'air extérieur n'arrive que par les orifices de combustion de la briquette, et une ouverture d'introductio