| 摘要 |
<p>The invention concerns a gas water heater comprising a reservoir (1) equipped with an cold domestic water supply (2) intake tube and an outlet tube for hot domestic water (3), a heating element (6), penetrating inside the reservoir (1) through an opening (4) thereof, and which contains a combustion chamber (24), wherein is arranged a burner (7), and an exhaust duct for burnt gases emerging through an orifice (11) outside the reservoir (1). The heating element (6) further contains at least a first longitudinal duct (22c) and at least a second longitudinal duct (22h), communicating with each other through a passage (35) formed at the heating element (6) end located inside the reservoir (1) and communicating respectively with a cold water inlet (27) and a hot water outlet, provided at the heating element (6) end located outside the reservoir (1) and capable of being connected to a hot water circuit.</p> |
