Anti-backflow air exhaust pipe of lampblack flue

Abstract

The invention discloses an anti-backflow air exhaust pipe of a lampblack flue. The air exhaust pipe comprises a main channel, a plurality of first auxiliary channels and a plurality of second auxiliary channels, and each first auxiliary channel and each second auxiliary channel are of an annular structure; an lampblack inlet is formed in the left end of the main channel, a lampblack outlet is formed in the right end of the main channel, and a plurality of lampblack holes are formed in the side face of the main channel; and one lampblack hole corresponds to one first auxiliary channel or one second auxiliary channel, and each first auxiliary channel and each second auxiliary channel are communicated with the corresponding lampblack holes on the main channel. The anti-backflow air exhaust pipe has the advantages that backflow of the lampblack is relieved.

Description

technical field [0001] The invention relates to an exhaust pipe, in particular to an anti-backflow air exhaust pipe for oil fume ducts. Background technique [0002] With the development of society and the improvement of people's living standards, in order to prevent the cooking fumes from polluting the kitchen environment, many families will install range hoods in the kitchen to absorb the cooking fumes in the kitchen. The kitchen exhaust ducts in existing high-rise residential buildings mostly use public flues. When the range hood is not working, the oil fume in the public flue is easy to flow back into the residential kitchen through the exhaust pipe at the outlet of the range hood. There is a problem of taint. In order to prevent oil fumes from pouring back and returning to the smell, and effectively improve the sanitary environment of the kitchen, an existing technical measure is to arrange a check valve device at the exhaust pipe. When the range hood is working norma...

AI Technical Summary

Problems solved by technology

However, due to the higher and higher residential buildings, the operating conditions of the public flue are becoming more and more complicated, and the pressure in the flue is also increasing; It is also getting weaker and weaker, seriously affecting the normal exhaust and stop function of the exhaust duct of the range hood. Therefore, it is extremely important to design an exhaust duct that can alleviate the backflow of oil fume.

Images