| 摘要 |
<p>1. Chimney cowl, formed of an assembly of sheet-metal elements, comprising an annular, vertical-axis fitting (8; 26) which, with one or more top elements (9; 28) and one or more bottom elements (10, 11; 23), delimits passages situated at two different levels, characterized in that the fitting (8; 26) is an element in the shape of a frustum of pyramid which is connected to several bottom elements, in that the latter (10, 11; 23) are tubular-shaped, having parallel axes, and in that the said frustum of pyramid (8; 26) is divided into separate sections by one or more partition elements (12, 13; 24), each section corresponding to a bottom element, and each partition element (12, 13; 26) meeting two opposite walls of the fitting (8; 26) over the entire height between the said levels of the passages so as to prevent any communication between two tubular bottom elements over the height situated between the said levels.</p> |
