公开(公告)号：US3842721A

公开(公告)日：1974-10-22

申请号：US37300073

申请日：1973-06-25

申请人： METAL FAB INC

发明人： CARDIFF G

IPC分类号： E04F17/02 ,  E04H12/28

CPC分类号： E04F17/02 ,  F23J13/025 ,  F23J2213/202 ,  F23J2213/40

摘要： A combination insulated flue and thermosyphon chimney having an inner flue conduit, a first liner member surrounding the conduit to form an air inner annulus therebetween, and a second liner member surrounding the first liner member to form an air outer annulus between the first and second liner. An insulation is connected to the inner fluid conduit to insulate the inner air annulus from the flue conduit. A shell member surrounds the insulation to separate the air inner annulus from the insulation. Brackets are provided to connect the shell member with the first liner, and the first liner with the second liner.