Double-channel large-flow countercurrent low-temperature heat exchanger for hot water boiler

• Main Authors: LI XUELIN, CHEN XIA, ZHAO HONGLI, FENG YANXIANG, DUAN XUQIANG, WANG GUAN, WANG SIYUAN, HU XIAOQING, CHENG JIE, HAO YONGYAO
• Format: Patent
• Language: Chinese; English
• Published: 04.12.2018
• Subjects: BLASTING; FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL; HEAT EXCHANGE IN GENERAL; HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; VENTILATING; WEAPONS

The invention discloses a double-channel large-flow countercurrent low-temperature heat exchanger for a hot water boiler. The double-channel large-flow countercurrent low-temperature heat exchanger comprises a supporting frame, an upper end collecting plate, a lower end collecting plate, side plates, upper collecting boxes and lower collecting boxes; smoke enters a smoke flowing channel through asmoke inlet and is subjected to heat exchange with water in heat exchange pipes in the flowing process, the temperature of the water in the heat exchange pipes is increased while the temperature of the smoke is lowered, then, the smoke is exhausted from a smoke outlet after heat exchange, water used for heat exchange enters the two lower collecting boxes through water inlets of the two lower collecting boxes, then, the water in the lower collecting boxes enters the multiple heat exchange pipes through collecting pipes II connected with one another, and the water enters the two upper collectingboxes through collecting