| 摘要 |
The invention relates to a heat exchanger (1) for a heating device, through which hot flue gases from a burner are guided giving off heat to a medium to be heated, said heat exchanger comprising ducts for the flue gases and ducts for the medium to be heated. The heat exchanger is made up of a number of thin-walled plate-type elements (2, 4, 6; 11a, 11b, 11c) which are placed against each other and are connected to form a unit, said elements defining ducts for the flue gases on the one hand and a respective first and second medium to be heated on the other hand. A duct (14) for the first medium to be heated may be separated from a duct (16) for a second medium to be heated by a flue gas duct. The unit may comprise an internal space (13), said space forming a combustion chamber, which on the one side can be supplied through ducts with gaseous fuel and combustion air and from which on the other side through flue gas ducts flue gases can be removed. |
