A smoke discharging chimney (1) comprising a plate (3), a first tubular element (5) associated to the plate (3), and a second tubular element (9) apt to be coaxially coupled with the first one (5). The first tubular element (5) has a lateral surface (6) having at least one closed portion and, at least one protruding engagement portion ( 14) developing transversally along the respective lateral surface (6, 10) so as to mutually engage the two tubular elements (5, 9). The protruding engagement portion (14) can be interrupted and develops transversally on a lower portion of the lateral surface (6, 10) of the first (5) and/or of the second tubular element (9) with respect to the circumference thereof, so as to help the discharge outside the chimney (1) of condensate that has built up from smoke inside said tubular elements (5, 9).