Isolated heat exchanger

The utility model discloses an isolated heat exchanger, include the heat exchanger main part, run through heat exchanger main part a plurality of flue gas heat exchange tubes and a plurality of waterheat exchange tube inside and that alternately arrange, be equipped with a plurality of aluminium foil in the heat exchanger main part, flue gas heat exchange tube and water heat exchange tube run through aluminium foil. The utility model discloses an isolated heat exchanger has avoided the flue gas to corrode and has polluted the direct of water side behind the pipeline, and factor of safety is higher, and device production simple process, cost reduction. 本实用新型公开了种隔离式换热器，包括换热器主体、贯穿换热器主体内部并交叉排布的若干烟气换热管和若干水换热管，所述换热器主体内设有若干铝箔片，所述烟气换热管和水换热管贯穿铝箔片。本实用新型的隔离式换热器，避免了烟气腐蚀管路后对水侧的直接污染，安全系数较高，且设备制作工艺简单，成本降低。