而且油烟机烟道是厨房的基础设施，极易藏污纳垢，是清理的死角，同时也是消防、卫生、防疫部门检查的重点区域。
Fume hood flue is the kitchen infrastructure, easy to hide dirt and dirt, is the dead end of cleaning, but also the fire control, health, epidemic prevention departments to check the key areas.
烟罩内壁易寄生老鼠、蟑螂，油腻胶状物长期扒附在金属表面，还会腐蚀金属材料，缩短烟道使用寿命。油烟管道有很多油渍长时间残留在烟机上和烟道表面上形成油垢，这样就会影响油烟机、烟道的使用，使烟流不易排除。
The inner wall of smoke hood is easy to parasitize mice and cockroaches. The greasy gelatin is attached to the metal surface for a long time. It also corrodes the metal material and shortens the service life of the flue. There are many oil stains left on the fume machine and flue surface for a long time, which will affect the use of the fume machine and flue and make the smoke flow difficult to eliminate.
厨房排烟不畅有80%左右的原因，都是由于长时间没有对油烟净化器的内置过滤网进行清洁，油污堵塞过滤网而造成的。烟道、烟罩常年处于高温工作环境，油烟气化形成积油、积炭或油腻的胶状物，如果不及时对烟道及烟罩进行清洗，非常容易引起火灾！
About 80% of the reasons for the poor exhaust of kitchen smoke are due to the lack of cleaning of the built-in filter of the fume purifier for a long time and the blockage of the filter by oil pollution. The flue and hood are in high temperature working environment all the year round. The fume gasifies to form oil, carbon or greasy gelatinous substance. If the flue and hood are not cleaned in time, it is very easy to cause fire!