What to do if the smoke exhaust hood has a bad odor

　　1、可以在煙道位置加裝一個的止逆閥，當油煙經過止逆閥的時候，止逆閥可以讓油煙直接朝，避免朝下流。的止逆閥不僅可以保護油煙機，還可以有效防止煙道里面的油煙倒灌會油煙機里面和管道里面，使得室內出現反味現象。

1. A high-quality check valve can be installed at the flue position. When the oil fume passes through the check valve, the check valve can allow the oil fume to flow directly upwards, avoiding flowing downwards. A high-quality check valve can not only protect the range hood, but also effectively prevent the backflow of oil fumes from the flue into the range hood and pipes, causing odor reflux indoors.

　　2、還可以在煙道口位置直接加裝一個密閉閥，在密閉閥和煙機閥的共同運行下，一般不是非常嚴重的油煙都是無法倒灌回管道里面和油煙機里的。

2. A sealed valve can also be directly installed at the flue outlet. Under the joint operation of the sealed valve and the range hood valve, generally not very serious oil fumes cannot be poured back into the pipeline and range hood.

　　3、若排煙罩反味是因為排煙管破裂、連接不良導致的，則可以將油煙機的排煙管更換成新的，或者是重新連接排煙管。

3. If the odor of the smoke exhaust hood is caused by the rupture or poor connection of the smoke exhaust pipe, the smoke exhaust pipe of the range hood can be replaced with a new one, or the smoke exhaust pipe can be reconnected.

　　4、若排煙罩反味是因為排煙管和公共煙道之間的連接位置出現了密封不嚴現象導致的，則可以使用玻璃膠或者是透明膠等將縫隙位置密封嚴實。

4. If the odor of the smoke exhaust hood is caused by poor sealing at the connection between the smoke exhaust pipe and the public flue, glass glue or transparent glue can be used to tightly seal the gap position.

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