原理是通過抽油煙機將煙氣推入次煙道中，用抽油煙機推動力和油煙溫度上浮力使油煙上升一段距離后再進入主煙道排出屋面，外加不銹鋼煙道裝飾板，煙道口可改入吊頂內，如果是中式煙機由于煙道導管外一般無裝飾板，則煙道口需改在吊頂下適當位置，以便煙道導管經裝飾板或從煙機吊柜內同煙機連接。
The principle is to push the flue gas into the secondary flue through the range hood, use the driving force of the range hood and the buoyancy of the oil fume temperature to make the oil fume rise for a certain distance, and then enter the main flue and discharge it from the roof, plus the stainless steel flue decorative plate, and the flue outlet can be changed into the ceiling. If the Chinese smoke hood has no decorative plate outside the flue duct, the flue outlet needs to be changed to a proper position under the ceiling, So that the flue duct can be connected with the smoke machine through the decorative plate or from the smoke machine hanging cabinet.
濟南廚房排煙
Jinan kitchen smoke exhaust
通常，酒店廚房排煙管道噪音有以下幾個原因，根據原因，可以對癥下藥：
Generally, there are several reasons for the noise of the smoke exhaust pipe in the hotel kitchen. According to the reasons, the remedy can be applied to the case:
1. 油煙機安裝不夠牢固。如放的位置不平整、螺絲松動、零件脫落造成工作時與支架發生共振產生噪音，此時就需要重裝油煙機或者零部件，一定要做好位置估算，確保安裝正確。
1. The installation of range hood is not firm enough. If the position is not flat, the screws are loose and the parts fall off, resulting in resonance with the support and noise during work, it is necessary to reinstall the range hood or parts. The position estimation must be done to ensure correct installation.
2. 止逆閥安裝不對。比如止逆閥失效、脫落等，導致排煙效果不好，油煙在管道中和止逆閥發生共振或者氣流擾動，容易發生噪音，此時應該重新安裝止逆閥或更換新的止逆閥。
2. The check valve is not installed correctly. For example, the check valve fails and falls off, resulting in poor smoke exhaust effect. The oil fume resonates with the check valve in the pipeline or airflow disturbance, which is prone to noise. At this time, the check valve should be reinstalled or replaced with a new check valve.
其中很多業務員甚至公司本身都不具備這方面的知識，往往跟據經驗來設計，而整個工程卻達不到所需要求，濟南通風管道的設計和安裝不合理，往往會造成廚房排煙不通暢，直接影響油煙凈化器的使用，所以我們平時在給廚房安裝設計油煙機的時候，一定要注意油煙通風管道安裝的事項。請通風管道廠家前來安裝。油煙管道在安裝的時候需要從多方面的角度考慮.
Many salesmen and even the company itself do not have this knowledge. They often design according to experience, but the whole project can not meet the required requirements. The unreasonable design and installation of ventilation pipes in Jinan often leads to poor smoke exhaust in the kitchen and directly affects the use of fume purifier. Therefore, when we install and design fume hoods in the kitchen, Pay attention to the installation of oil fume ventilation pipe. Please the ventilation duct manufacturer to install. The installation of oil fume pipeline needs to be considered from many aspects
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