Exhaust duct

Abstract

An exhaust duct comprises a hollow exhaust duct body, an air intake on the exhaust duct body, one or more than one backoff or projected brace table outside the exhaust duct body; the shaped of the brace tables are same or different; the bearing surface is horizontal or inclined or flattened or rough or normal or abnormal. The brace table is added on the prior exhaust duct body whatever the brace table is backoff or projected, in order to support, fix the bottom formwork between the duct and the floor plate aperture, therefore the aperture slurry sealing problem between the floor plate and the duct is solved, furthermore the gas staining, odor staining, pressure leakage between the layer and layer can be prevented and the invention also provides many preferable executive plans, such as adding various function components, duct material selection and design the material structure.

Description

technical field [0001] The invention relates to building pipes in the technical field of building materials, in particular to an exhaust pipe suitable for kitchens and toilets in various buildings. Background technique [0002] Exhaust pipes used in kitchens and bathrooms in previous buildings were designed to prevent the occurrence of smoke, gas, and odor between layers through internal structural design. In view of this, many manufacturers and even users have spent a lot of thought on solving this problem. However, none of these manufacturers found another problem, that is, because there is no supporting device outside the pipe body, during the installation process, it is difficult to install the bottom form between the inner corner floor and the pipe gap, so the inner corner building was abandoned. The gap between the plate and the pipe is blocked, causing gas, odor, and pressure to occur between the exhaust layers of the system, thereby affecting the exhaust effect, and...

AI Technical Summary

Problems solved by technology

However, none of these manufacturers found another problem, that is, because there is no supporting device outside the pipe body, during the installation process, it is difficult to install the bottom form between the inner corner floor and the pipe gap, so the inner corner building was abandoned. The gap between the plate and the pipe is blocked, causing gas, odor, and pressure to occur between the exhaust layers of the system, thereby affecting the exhaust effect, and due to the existence of the gap, there are hidden dangers in the installation quality of the pipe

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