A pipe in a chimney that carries flame and smoke to the outer space. Flue, a pipe product used to remove smoke from kitchen cooking activities or polluted air from bathroom. Also known as exhaust duct, ventilation duct and residential exhaust duct. Residential flue is the main part of the exhaust pipe system used in residential kitchen and bathroom.
Extended data
Flue is a tubular device for exhausting waste gas and flue gas. Residential flue refers to a vertical pipe product used for exhausting kitchen flue gas or toilet flue gas, also known as exhaust duct, ventilation duct and residential exhaust duct.
Application principle of flue: When the flue gas from the air inlet is discharged into the flue, it will meet the flue gas discharged upward from the lower floor. When two air streams meet, a vortex and an air curtain will be formed, which will hinder the upward movement of the lower flue gas. Once the fire check valve is stuck by oil pollution and cannot be opened, the smoke will string up indoors because of its upward movement.
References:
Baidu encyclopedia-flue