Isolation-type heat exchanger

The invention discloses an isolation-type heat exchanger which comprises a heat exchanger main body, a plurality of flue gas heat exchange pipes and a plurality of water heat exchange pipes; the fluegas heat exchange pipes and the water heat exchange pipes penetrate through the heat exchanger main body and are distributed in a crossed manner; a plurality of aluminum foil sheets are arranged in the heat exchanger main body; and the flue gas heat exchange pipes and the water heat exchange pipes penetrate through the aluminum foil sheets. According to the isolation-type heat exchanger, direct pollution to the water side after flue gas corrodes a pipeline is avoided, the safety coefficient is relatively high, an equipment manufacturing technology is simple and the cost is lowered. 本发明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。本发明的隔离式换热器，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。