The range hood can be directly discharged to the outside, but attention should be paid to the problem of return air. After a long time, oil stains will occur near the outdoor exhaust, which will affect the appearance and the environment. Range hoods are generally discharged into the flue of a house.

In addition, the purpose of smoke exhaust is to discharge indoor smoke and dust to the outside through exhaust machinery, and ventilation can force indoor and outdoor air circulation through machinery. First of all, their ventilation direction and place are different, and the air quality in circulation is also different.

So you can't use the same pipe, otherwise ventilation will be counterproductive and smoke will be sent indoors. The installation standard of smoke exhaust pipeline is different from that of smoke exhaust pipeline. Smoke exhaust fire damper should be installed in the smoke exhaust pipeline system, but ordinary smoke exhaust pipeline may not be installed.

Extended data:

Basic knowledge of range hood maintenance;

1, the installation height of the range hood must be appropriate, so as to ensure the nonconformity and the smoke exhaust effect.

2. To avoid excessive noise or vibration, oil dripping and oil leakage. Range hood, we should clean the range hood regularly to avoid too much oil sticking to the inner surface of the motor, turbine and range hood.

3. Keep the air circulation in the kitchen when using the range hood to prevent the air in the kitchen from forming negative pressure and ensure the suction of the range hood.

4. Consumers are advised not to disassemble the range hood for cleaning without authorization, because once the motor is not installed, the smoking effect cannot be guaranteed and the noise will increase; It's best to let the manufacturer's professionals clean it.

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