The standard for greasy fume pipe cleaning is as follows: After cleaning, over 90% of the flue should show the original color of the inner iron plate, without any stubborn, lumpy grease stains. The stove surface should be free of grease and bright and tidy. Over 90% of the fan blades should reveal the base paint, the motor base should not have accumulated grease, and the external pipe should be free of grease and stubborn residue.

Additionally, the inner walls of the smoke hood are prone to harboring rodents and cockroaches, which do not meet national hygiene standards. Oily,胶状 substances that adhere to the metal surface for an extended period can also corrode the metal materials, shortening the lifespan of the smoke duct. There are many oil stains left on the smoke machine and smoke duct surfaces over time, forming greasy deposits. This affects the operation of the smoke extractor and the smoke duct, making it difficult to expel smoke. Approximately 80% of the reasons for poor kitchen exhaust are due to the long-term lack of cleaning of the internal filter mesh of the smoke purifier, leading to clogging by oil污.

Long-term use of a range hood without cleaning has its drawbacks.

Long-term neglect leads to increased impeller load due to oil residue, resulting in slow rotation and poor exhaust performance.
2. Neglecting regular cleaning can lead to capacitor aging and failure, resulting in the inability to start or operate.
3. Prolonged neglect leads to heavy oil residue on the impeller, causing the motor to operate under excessive load for an extended period, which can easily result in burnout.
4. Neglecting regular cleaning can lead to oil residue sticking the valve in the smoke pipe, preventing it from closing, causing smoke and grease to be discharged into the kitchen through the main smoke channel.
5. Neglecting regular cleaning can lead to a gradual buildup of oil residue in the oil filter, eventually blocking the intake oil screen and causing difficulties in exhaust smoke.
6. Neglecting regular cleaning leads to clogged exhausts, with carcinogenic substances in the oil smoke affecting human health.
7. Neglecting regular cleaning can increase energy consumption by 15%-30%.