MULTIFUNCTIONAL SLEEVE FOR A PREMIX HEAT EXCHANGE CELL, SLEEVE AND SUPPORT ASSEMBLY, AND PREMIX HEAT EXCHANGE CELL

摘要

A multifunctional sleeve (5) for a premix heat exchange cell (1), said cell (1) comprising a casing (10) adapted to contain a liquid/gas heat exchanger (14) and a combustion space (15) adjacent to the exchanger (14); a door (20) adapted to be removably fastened to the casing (10) for closing the casing, in use, and adapted to be removed from the casing (10) to allow access inside the casing (10) for maintenance operations; said door (20) comprising a mixture feeding duct (21) having a first duct end (21′) fastened to the door (20) and ending up, in use, inside the casing (10) at the combustion space (15) through a door through opening (23), and a free second duct end (21″) adapted to receive an incoming fuel gas/combustion air mixture from a premixer (3), said multifunctional sleeve (5) comprising a tubular portion (51); a first fluid connection portion (52) at a first tubular portion end (53) adapted to be removably fastened to the duct end (21″); a second fluid connection portion (54) at a second tubular portion end (55), opposite to the first end, adapted to be removably fastened to a premixer outlet (31); a fastening device (61) adapted to removably fasten the multifunctional sleeve (5) to the casing (10), outside the casing (10).