Blow-in preventive prefabricated smoke flue

Abstract

The invention relates to a fireproof smoke exhaust flue assembly, in particular to a blow-in preventive prefabricated smoke flue for houses. The blow-in preventive prefabricated smoke flue comprises a square through pipe. A smoke inlet is formed in the square through pipe, the square through pipe comprises fire-resistant plates, glass fiber sandwich layers are arranged inside the fire-resistant plates, a smoke guide barrel which is integrally connected with the square through pipe is arranged at an outlet of the smoke inlet, a platy fire-resistant cover plate which is used for closing the smoke inlet is arranged on a side of the smoke inlet and is close to the smoke guide barrel, the upper portion of the fire-resistant cover plate is hinged onto the square through pipe, the smoke guide barrel is arranged along a flow direction of the smoke flue, reinforcing ribs are arranged at the bottom of the smoke guide barrel, and a smooth transition protrusion is arranged on the outer side of an outlet in the upper portion of the smoke guide barrel. According to the technical scheme, the blow-in preventive prefabricated smoke flue has the advantages that the blow-in preventive prefabricated smoke flue is high in strength, and smoke can be prevented from being blown in the blow-in preventive prefabricated smoke flue.

Description

technical field [0001] The invention relates to a fire-proof flue exhaust component; in particular, it relates to a prefabricated flue for residential use to prevent backflow. Background technique [0002] Fire prevention flue is widely used in the air supply and exhaust system of daily life. A residential flue is usually a square duct, one side of the duct is provided with a smoke inlet, and the smoke inlet is connected to the range hood through a duct. At present, there are mainly two types of flue, one is prefabricated flue, which is integrally formed by prefabricated cement, and the wall thickness of cement prefabricated flue exhaust is generally 1.5cm, and its vertical bearing capacity and flexible impact resistance are poor; the other is It is a flue exhaust duct assembled and formed by fireproof boards. This kind of flue duct is not firmly connected, the structure is not strong, the service life is short, and the heat preservation effect is poor. It is currently in t...

AI Technical Summary

Problems solved by technology

At present, there are mainly two types of flue, one is prefabricated flue, which is integrally formed by prefabricated cement, and the wall thickness of cement prefabricated flue exhaust is generally 1.5cm, and its vertical bearing capacity and flexible impact resistance are poor; the other is It is a flue exhaust duct assembled and formed by fireproof boards. This kind of flue duct is not firmly connected, the structure is not strong, the service life is short, and the insulation effect is poor. It is currently in the phase-out stage

[0003] In addition, because the smoke inlet of the traditional prefabricated flue is directly set on the side wall of the square duct, when the downstairs residents exhaust smoke, the smoke can easily flow into the kitchen of the upper residents along the smoke inlet, causing the smoke to flow backward

Images