公开(公告)号：US12117208B2

公开(公告)日：2024-10-15

申请号：US17869967

申请日：2022-07-21

申请人： Xi'an Jiaotong University

发明人： Shifeng Deng ,  Qinxin Zhao ,  Huaishuang Shao ,  Yungang Wang ,  Zhiyuan Liang

IPC分类号： F24H8/00 ,  F24H1/43 ,  F24H9/00

CPC分类号： F24H8/006 ,  F24H1/43 ,  F24H9/0026

摘要： A gas-fired steam boiler, including multiple heat exchange tubes, an upper steam header, a lower steam header, a casing, a burner, a condenser, a chimney, and a controller. The heat exchange tubes are vertically arranged to form an annular tube row. A space enclosed by the annular tube row is configured as a furnace. Adjacent two heat exchange tubes are combined to form a gap channel evenly distributed along a circumferential direction. A width of the gap channel is 0.1-4 mm, and a circumferential length of the gap channel is 50-300 mm. A length of the gap channel along an axial direction of the heat exchange tube is the same as a length of the heat exchange tube.