Now the kitchen of hotel, restaurant and restaurant are all large-scale lampblack machine equipment. Large range hoods have been used for a long time. If they are not cleaned frequently, many oily stains can be left on the surface of range hoods and oil smoke pipes. The time will form an oily scale. If they are not cleaned or simply cleaned, they cannot be lowered. This will affect the use of range hoods and oil smoke pipes, which is very prone to fire. In actual use, there are many types of cigarette machines. Here are a few of Shandong cigarette machines

　　污染源全部密封在防護罩內，其優點是排氣風量小，能有效控制有害物質，不受環境影響，但影響操作，主要用于控制要求高的場合，氣體或煙塵危害的比較。在食品廠或廚房自動化生產線上應用較多。全自動連續電炸鍋、全自動連續烘烤設備均在煙幕內工作。

　　All the pollution sources are sealed in the protective cover, the advantages of which are small exhaust air volume, effective control of harmful substances, not affected by the environment, but affect the operation, mainly used in the occasions with high control requirements, to eliminate the harm of gas or smoke. It is widely used in food factory or central kitchen automation production line. The automatic continuous electric fryer and the automatic continuous baking equipment all work in the smoke screen.

　　柜內的抽油煙機有一個開式側供手動操作，另一側為密封，開式側保持一定的吸入速度，以保證柜內有害物質不逸出，主要應用于實驗室。

　　The range hood in the cabinet has an open side for manual operation, and the other side is sealed. The open side maintains a certain suction speed to ensure that harmful substances in the Cabinet do not escape. It is mainly used in the laboratory.

　　外部吸風罩位于煙源附近，靠近吸煙口的吸風將煙吸進罩內。對生產運行影響小，安裝維護方便，但增加了周圍空氣的吸入量，排風量大，效率低，對有害物質的控制能力差。主要用于因技術要求或操作條件限制，污染物無法密封的場合。

　　The external suction hood is located near the smoke source, and the suction close to the smoking port will suck the smoke into the hood. It has little influence on production and operation, convenient installation and maintenance, but it increases the intake of surrounding air, large exhaust air volume, low efficiency and poor control ability for harmful substances. It is mainly used in the situation where pollutants cannot be sealed due to technical requirements or operating conditions.

　　接收排氣罩的進口直接朝向煙氣流動方向，并與污染源方向對齊，以控制煙氣的擴散。廚房斗掛罩是接收自然升騰的煙霧。

　　The inlet of the receiving exhaust hood is directly toward the direction of flue gas flow and aligned with the direction of pollution source to control the diffusion of flue gas. The hanging cover of the kitchen bucket is to receive the smoke rising naturally.

　　抽吸式排氣罩由抽吸罩和吹氣氣流組成?？雇饨鐨饬鞲蓴_能力強，控制效果好。它不影響進程操作。主要作用是提高排煙效果。吸風罩遠離煙源或附近有氣流。

　　The suction type exhaust hood is composed of suction hood and blowing air flow. It has strong anti-interference ability and good control effect. It does not affect process operations. The main function is to improve the smoke exhaust effect. The hood is far away from the smoke source or there is air flow nearby.

　　以上是山東飯店廚房排煙罩的幾種類型，廚房排煙可分為上吸、下吸、側吸等多種。

　　The above are several types of smoke hoods in Shandong hotel kitchen, which can be divided into up suction, down suction, side suction and so on.