Gas is a necessity in our daily life. Without gas, we will feel that room breathing and CO2 in the air are also the basic elements to maintain our daily life. Therefore, we should always maintain natural ventilation and consider our requirements for CO2, which is also the harm of ventilation pipe production and processing to our daily life, But what product quality problems are involved in the production of ventilation pipes in Jinan?
It is forbidden to focus on the wing angle and elbow of ventilation pipe
① Main manifestations: two relative plans of rectangular frame ventilation duct, two uneven surfaces on both sides; The hem is not vertical; The straight lines are different; The pressure groove cannot be closed tightly.
② Harm: it will cause uneven bearing force of ventilation pipe connection, non vertical ventilation pipe behind the equipment, loose flange gasket, ventilation of management system, air conditioning load damage and reduce service life.
Jinan ventilation duct
③ Reason: it is forbidden to confirm the setting out of slab blanking construction; The length and total width of two groups of parallel surfaces and relative surfaces of ventilation duct are different.
④ Methods: when starting blanking, solve the strict angle square of the plate, and check the length, total width and straight line of a plate to make their error control within the agreed range; For the plates after blanking, the two plates on the opposite surface of the ventilation pipe shall be overlapped to check the specification. Because the layout of the building to which the kitchen belongs and the position of the kitchen in the building are different, the standard kitchen should be discharged orderly by the central air conditioning system software of the building.
However, the vast majority of the situation encountered at this stage is that there is no kitchen exhaust system software in the building. Many buildings with restaurants and kitchens only design centralized heating system without centralized air conditioning system software. When the kitchen is in operation, the ventilation system is put into operation, and the kitchen is under negative pressure. The fresh air system comes from the infiltration of outdoor fresh air system and a lot of gas from the hotel.