| 摘要 |
The invention relates to a pipe for removing flue gases, for the connection of heating boilers to chimneys, constituted by at least two pipe parts (1, 1') having the same cross-section which extend in the vertical direction, one of the parts being connected via its end to the end of the other pipe part, the end zones (3) of the two pipe parts (1, 1') being surrounded by a sleeve (4) which may be closed and seals being placed between the pipe parts (1, 1') and the sleeve (4). According to the invention, the pipe for removing flue gases is configured in such a way that an elbow coupling (7) is placed between the two pipe parts (1, 1'), which coupling extends with its part (7') of larger cross-section under the sleeve (4), which overlaps the connection end and the seal of the upper pipe part (1) and which grips (bites into) its part (7'') of smaller cross-section into the lower pipe (1'). Despite the use of pipe parts of the same cross-section, which, in addition, do not require any flanging or beading deformation, the elbow coupling not only facilitates the ability of the pipe parts to be assembled but it creates, especially, a connection which is tight with respect to the toxic liquid, guaranteeing that any condensation product flows back into the heating boiler without any problem. <IMAGE>
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