| 摘要 |
<p>The heating device (1) comprises: an assembly (2-4) which is made of a heat-conducting material and has an associated heating resistor (5) and in which, between inlet and outlet orifices (12), there is defined a passage (7a, 7b) which follows a predetermined path, close to the resistor (5), for a flow of water intended to be heated. The assembly (2-4) comprises a central body (2) having two main opposite surfaces or faces (2a, 2b) to which respective closing shells or covers (3, 4) are connected in a liquid- tight manner. Between each main surface or face (2a, 2b) of the central body (2) and the associated shell or cover (3, 4) there is defined a respective passage which follows a serpentine or labyrinth-like path (7a, 7b). These serpentine or labyrinth-like passages (7a, 7b) communicate with each other by means of a through-hole (10) provided between the main surfaces or faces (2a, 2b) of the central body (2). The heating resistor (5) is provided in the central body (2), between the main surfaces or faces (2a, 2b) such that it is in a heat-exchanging relationship with both the serpentine or labyrinth-like passages (7a, 7b).</p> |
