| 摘要 |
Apparatus for heating water to above the boiling point, provided with a closed vessel (10) in which the water to be heated is contained, heating means (12) for heating the water in the vessel, a feed connection (26) with a feed tap (28) for feeding cold water into the vessel and a discharge connection with a discharge line (16) to a discharge tap (24) for discharging hot water from the vessel. Control means (30,30a) are used for controlling the feed tap (28) such that a predetermined water level in the vessel is maintained. The apparatus comprises further a heat exchanger (18) of which the hot water circuit extends between the discharge connection (16) and the discharge tap (24) and the cold water circuit extends between the feed tap (28) and the feed connection (26) such that the hot water in the hot water circuit is able to exchange heat with the cold water in the cold water circuit. For supplying water with a desirable temperature a second discharge connection with a second discharge line (34) for discharging hot water from the vessel is installed, which second discharge line is connected to the first discharge line (22) between the heat exchanger (18) and the discharge tap (24). <IMAGE> |
