| 摘要 |
A cover plate A for multi-walled chimneys K has a lower face which is inclined downwards in the outward direction. Consequently, the condensation water drops T fall outside the flue rather than inside. For chimneys of square cross-section, the lower face is preferably subdivided into four segments corresponding to each of the sides of the square. The lower face may also have at least two partial zones in the form of slits inclined downwards. <IMAGE>
|
