A plant for heating by combustion of a solid fuel

F - Mech Eng,Light,Heat,Weapons – 23 – J

Patent

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Details

F23J 3/02 (2006.01) F23J 15/06 (2006.01)

Patent

CA 2571052

The invention relates to a heating plant (1). The plant comprises a combustion chamber (2) for combustion of a solid fuel (F), an outlet (3) from the combustion chamber (2), and a heat exchanger (5) containing a cooling medium and arranged in connection with the combustion chamber. A flue duct (6) is connected to the outlet (3) of the combustion chamber (2) and passes through the heat exchanged (5). Downstream the heat exchanger (5), a cyclone (7) is arranged to separate ash from the flue gases, and a flue fan (8) is arranged to draw flue gases through the flue duct (6). The flue duct (6) and the flue fan (8) are dimensioned to maintain a high velocity of flow in the flue duct (6), all the way from the outlet (3) of the combustion chamber (2) and up to the cyclone (7), in order to achieve a blasting effect on the inside of the flue duct by ash particles being drawn through the flue duct (6).

L'invention concerne une installation de chauffage (1) comprenant une chambre de combustion (2) pour la combustion d'un combustible solide (F), une sortie (3) de ladite chambre de combustion (2), et un échangeur de chaleur (5) contenant un fluide de refroidissement et agencé de manière à être raccordé avec la chambre de combustion. Un conduit d'évacuation des gaz de combustion (6) est connecté à la sortie (3) de la chambre de combustion (2) et s'étend au travers de l'échangeur thermique (5). En aval de l'échangeur thermique (5), un cyclone (7) est monté pour séparer les cendres des gaz de combustion, et un ventilateur (8) est agencé pour aspirer les gaz de combustion à travers le conduit d'évacuation (6). Le conduit d'évacuation (6) et l'aspirateur (8) sont dimensionnés de manière à maintenir une vitesse d'écoulement élevée dans le conduit d'évacuation (6), sur toute la distance comprise entre la sortie (3) de la chambre de combustion (2) et le cyclone (7), en vue d'obtenir un effet de soufflage à l'intérieur du conduit d'évacuation, les particules de cendres étant aspirées à travers ledit conduit (6).

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