| 摘要 |
<p>A heat exchanger (1), preferably intended for water-heating apparatuses (101) provided with a combustion chamber (23), which comprises: a finned tube bundle (11), comprising a plurality of tubular ducts (2) for circulating at least one heat carrier liquid and a plurality of fins (10) externally associated to the tubular ducts (2); a first and a second manifolds (4, 5) of the heat carrier liquid, positioned at opposite ends of the tube bundle (11) and associated to the tubular ducts (2). The manifolds (4, 5) are provided with a substantially planar rear wall (19) positioned near to an axially outermost fin of the plurality of fins (10) so as to pack the plurality of fins (10) at axially opposite ends. The manifolds (4, 5) comprise at lest one support surface (16) defined at an axially outer position with respect to the rear wall (19) and adapted to cooperate with a wall (12) of the combustion chamber (23) to support the heat exchanger (1) in the water-heating apparatus (101). It is therefore possible to reduce the size of the structural support elements, thus obtaining, in a simple and cost-effective way, and advantageous reduction of the overall size of the heat exchanger.</p> |
