Residential exhaust duct system

Abstract

The invention provides a residential exhaust duct system. The residential exhaust passage system includes a main exhaust duct communicating with vents of floors, flow guiding devices arranged at the vents of the floors, and a hood device arranged at the top of the main exhaust duct, wherein the main exhaust duct is arranged vertically and comprises a plurality of prefabricated exhaust pipelines, the ends of the prefabricated exhaust pipelines are provided with strength reinforcement areas, and strength reinforcement areas of adjacent prefabricated exhaust pipelines are connected through connection parts; and the top of the main exhaust duct is provided with a rainwater prevention leakage part, and the hood device is arranged at an outlet of the top of the main exhaust duct through the rainwater prevention leakage part. According to the residential exhaust duct system, reinforced design is carried out at the ends of the prefabricated exhaust pipelines to enhance the strength of the prefabricated exhaust pipelines; and the connection part is arranged to be connected with every two prefabricated exhaust pipelines, and the overall sealing performance of the exhaust duct system is further enhanced.

Description

technical field [0001] The invention belongs to the technical field of building exhaust ducts, and more particularly relates to an exhaust duct system with high sealing performance. Background technique [0002] Residential exhaust duct system, also known as residential exhaust duct system, is a shared exhaust duct system installed in residential kitchens and bathrooms to remove oily fume or dirty gas from toilets produced by cooking activities in residential kitchens. [0003] The residential exhaust duct system consists of three parts: residential exhaust ducts, functional components (such as: fire dampers, check valves or diversion devices) and roof hoods. The residential exhaust duct system has been widely used in residential buildings across the country, but the sealing problem of the system has been plagued by the development of the industry, and the problems of smoke leakage and rainwater leakage still exist. The main reasons for the analysis are as follows: [0004...

AI Technical Summary

Problems solved by technology

Residential exhaust duct systems have been widely used in residential buildings across the country, but the sealing problem of the system has been plagued by the development of the industry, and the problems of smoke leakage and rainwater leakage still exist

[0005] (1) The residential exhaust duct itself is not sealed: the exhaust duct is damaged or cracked, resulting in the leakage of smoke and the occurrence of smoke and odor problems

[0006] (2) Functional components (such as check valves) are not sealed: the check valves are not closed tightly, resulting in the backflow of smoke at the inlet of the residential exhaust duct and the occurrence of smoke and odor problems

[0007] 2. Installation quality problems

However, on the one hand, during the actual installation process of the prefabricated exhaust pipe, the cement mortar applied to the joints of the prefabricated exhaust pipe is easy to fall off, causing the cement mortar at the joints of the exhaust pipe to be not full, missing, and have holes. As a result, the phenomenon of smoke leakage and smoke and smell; on the other hand, the displacement of the exhaust pipe during the connection process causes the exhaust pipe to be misaligned up and down, and even the seam is directly exposed, causing the smoke to leak from the seam; In addition, during the handling and installation of residential prefabricated exhaust pipes, the end of the prefabricated exhaust pipes is damaged or collapsed due to collision, and the cement mortar at the joints of the prefabricated exhaust pipes cannot completely cover the damage or collapse. location, resulting in the leakage of smoke and the occurrence of smoke and odor problems

[0011] (2) The connection between the residential exhaust duct and the functional components is not sealed

[0013] The strength of the air inlet of the prefabricated exhaust pipe is low, and cracks or damage often occur. When installing functional components at the air inlet, it is difficult to form a good seal, and there will be smoke and leakage from the connection between the two. gas phenomenon

[0014] (3) The connection between the residential exhaust duct and the roof hood is not sealed

Due to the small wall thickness of the butt joint pipe of the hood (generally about 20mm), the contact area of ​​the butt joint is small, and it is difficult to form an effective seal, and rainwater often leaks into the interior of the air duct of the house.

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