公开(公告)号：EP4023774A1

公开(公告)日：2022-07-06

申请号：EP21826662.5

申请日：2021-06-15

申请人： Aktsionernoe Obshchestvo "Kalugin"

发明人： SUBBOTIN, Anton Anatolevich ,  PROKOFEV, Boris Nikolaevich ,  MURZIN, Iurii Aleksandrovich

IPC分类号： C21B9/00 ,  F24H3/00

摘要： What is claimed is a shaftless air heater, which comprises a burner system located at the top of a pre-chamber (1) with a chamber for mixing gas and air. The prechamber (1) has a shell (2) with a lining, inside of which an annular channel is provided, the channel being bounded by an inside annular wall (3) and by an outside annular wall (4), thereby forming a gas collector (12). The lining of the pre-chamber (1) is supported on a metal annular beam (5), one wall of which represents a continuation of the shell (2), while the other wall forms a shell (7) of a dome-like combustion chamber (6), and the base thereof forms the support of the pre-chamber (1). The combustion chamber (6) with the shell (7) and a lining (8) is arranged under and coaxially with the pre-chamber (1). The metal annular beam (5) is permanently joined with the shells (2) and (7) and is provided with a base plate (9) from above, thus forming an air collector (10). The outside annular wall (4) has an opening with a branch pipe (18) for supplying gas. Outlet gas openings (13) are arranged in rows in the top portion of the inside annular wall (3), and air openings (14) are located in the bottom portion of the inside annular wall (3). The invention provides for increased operational safety and reliability due to an increased stability and durability of the shaftless air heater.