I heard that there are some standards because I have worked in the kitchen flue before. That's true. I really didn't know it before ~ ~ Let me tell you! !

1. The flue gas discharged from various gas equipment in the house must be discharged to the outside. When multiple devices share a flue, they should not interfere with each other. The lampblack discharged from the kitchen gas appliance exhaust hood shall not share a flue with the exhaust of the water heater or heating furnace.

According to this regulation, when you have facilities such as water heater or heating stove, you must design two smoke exhaust pipes at the same time, because they can't be mixed with "smoke from the exhaust hood of kitchen appliances".

2. In addition, it is also standard to clean the kitchen waste oil pool every 30 days in case of emergency. The kitchen flue is cleaned every 180 days. Use special mechanical cleaning equipment to effectively strip the pollutants accumulated on the inner surface of the oil fume pipeline, and it is forbidden to use industrial alkali (alkaline agent with PH greater than 12) for cleaning. Even the cleaning technology of professional cleaning institutions should have requirements.