Retention prevention exhaust ventilation pipeline for building

Abstract

The invention relates to a retention prevention exhaust ventilation pipeline for a building. The retention prevention exhaust ventilation pipeline for the building comprises a plurality of sections of exhaust branch pipelines, and the exhaust branch pipelines are in vertical butt joint. A ventilation channel is formed in the lower portion of the exhaust branch pipeline at the bottom, one end of the ventilation channel is communicated with the inside of the exhaust branch pipelines, and the other end of the ventilation channel is communicated with the outside of the building. Due to the fact that the ventilation channel is formed in the lower portion of the exhaust branch pipeline at the bottom, one end of the ventilation channel is communicated with the inside of the exhaust branch pipelines, and the other end of the ventilation channel is communicated with the outside of the building, air enters the exhaust ventilation pipeline from the outside of the building, the inside of a resident room can not be influenced, and the ventilation channel can not be plugged in the decoration process in the resident room. Fresh air enters from the ventilation channel formed in the lower portion of the exhaust ventilation pipeline, flowing ventilation of the exhaust ventilation pipeline is always maintained by pressure difference, ventilation is smooth, and foul air can not be retained in the exhaust branch pipelines.

Description

technical field [0001] The invention relates to an exhaust device for buildings, in particular to an anti-retention exhaust ventilation duct for buildings. Background technique [0002] Exhaust ventilation ducts are pipe products used to remove smoke from cooking activities in the kitchen or turbid air in bathrooms. The main component of the piping system. [0003] Existing exhaust and ventilation ducts are formed by vertically butt joints of multi-section exhaust branch pipes, with a wind cap on the upper part and an air inlet on the bottommost exhaust branch pipe, which is located in the room of the residents on the first floor. When exhausting, the indoor gas will produce sound during the process of entering the air through the air inlet. When the negative pressure is large, the sound will be loud, which will seriously affect the residents. And due to the effect of negative pressure, the kitchen door or toilet The door is often not closed. In order to eliminate the abov...

AI Technical Summary

Problems solved by technology

[0003] Existing exhaust and ventilation ducts are formed by vertically butt joints of multi-section exhaust branch pipes, with a wind cap on the upper part and an air inlet on the bottommost exhaust branch pipe, which is located in the room of the residents on the first floor. When exhausting, the indoor gas will produce sound during the process of entering the air through the air inlet. When the negative pressure is large, the sound will be loud, which will seriously affect the residents. And due to the effect of negative pressure, the kitchen door or toilet The door is often not closed. In order to eliminate the above-mentioned effects, the residents often block the air inlet, causing the gas to be unable to circulate, resulting in stagnation of the turbid gas in the exhaust ventilation duct, which cannot achieve the purpose of discharging the turbid gas. When it is too large, it will cause the range hood to rotate and make noise, which will affect the residents

Sometimes the air inlet will be blocked during the renovation of the overall kitchen, which will cause the gas to be unable to circulate and the dirty air to be exhausted.

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