When the inner core tube is installed, it is fully unfolded by pushing screw. The outer wall of the core tube is tightly connected with the inner wall of the trachea. The opening at the end of the core tube is closed by a liner, forming a second sealing surface.

　　所述橡膠密封圈與所述風管管壁被壓縮形成第三密封面，從而可靠地滿足所述芯管連接的密封要求。

　　The rubber sealing ring and the air pipe wall are compressed to form a third sealing surface, thereby reliably meeting the sealing requirements of the core pipe connection.

　　內芯管用于風管連接的運行

　　Inner core tube for air duct connection operation

　　安裝前將“0”形橡膠密封圈張緊力嵌入“v”形槽內的芯管，芯管兩端開口處于shiplap狀態，直徑較窄。使它可以很容易地把保持連接到管口,安裝時在推動螺桿芯直徑膨脹,當核心管兩端對齊,完成內部擴張業務,與心墻風管壁緊密,然后用自攻螺絲或鉚釘核心管和管周向固定安裝完成。

　　Before installation, the tension force of the "0" rubber sealing ring is embedded in the core tube of the "v" groove. The opening of both ends of the core tube is in shiplap state, and the diameter of the core tube is narrow. It can be easily maintained to the nozzle, and when installed, the diameter of the screw core expands. When the two ends of the core tube are aligned, the internal expansion business is completed, and the core wall air duct wall is tightly connected. Then the core tube and the tube are fixed by tapping screw or rivet.

　　工作區域新風預處理風機-為廚房工作區域(人員工作崗位)提供經過預處理的新風。濟南煙機安裝人員提供約20%的排煙風量，排煙風機排煙炊事烹調區提供煙機油和煤氣。

　　Fresh Air Pretreatment Fan for Working Area - Provide pre-treated fresh air for kitchen working area (staff position). Jinan smoke machine installation personnel provide about 20% of the smoke exhaust air, smoke exhaust fan to the cooking area to provide smoke engine oil and gas.

　　廚房排煙風機排煙罩除消防排煙風機管外，考慮到廚房工作溫度過高的原因。其他風機管道建議安裝150℃消防閥(與平時普通風機管道設備70℃略有不同)。當火災排煙風機發生作用時，必須關閉所有其他風機(消防送風從窗外、門縫等處進入)。開啟“排煙風機”時，應同時開啟“通風柜補充風機”和“工作區域新風預處理風機”(聯動)。

　　The smoke hood of kitchen exhaust fan takes into account the high working temperature of kitchen besides the fire exhaust fan tube. Other fan pipelines are recommended to install fire valves at 150 C (slightly different from normal fan pipeline equipment at 70 C). When the fire exhaust fan works, all other fans must be shut down (fire supply air enters from windows, door cracks, etc.). When opening the "smoke exhaust fan", the "supplementary fan of the ventilator" and the "fresh air pre-treatment fan of the working area" (linkage) should be opened at the same time.

　　廚房排煙罩排煙管末端設置排煙閥，排煙風機排煙罩與排煙管連接處設置排煙防火閥。需要注意的是，排氣閥與排氣閥是完全不同的設備功能。排煙閥平時通常是關閉的。如遇火災打開時，將與報警主機連接。開啟條件是自動報警系統將發生火災(探測器報警)，火災報警主機將處于自動狀態。排煙消防閥通常是開啟的，火災也處于開啟狀態，但當排煙溫度達到280℃時，排煙消防閥自動關閉，聯動風機已開啟停止運行。

　　A smoke exhaust valve is arranged at the end of the smoke exhaust pipe of the kitchen smoke hood, and a smoke exhaust fire valve is arranged at the connection between the smoke exhaust hood of the exhaust fan and the smoke exhaust pipe. It should be noted that the exhaust valve and the exhaust valve are completely different equipment functions. The exhaust valve is usually closed. In case of fire, it will be connected with the alarm host. The opening condition is that the automatic alarm system will have a fire (detector alarm), and the main fire alarm machine will be in an automatic state. The smoke exhaust fire valve is usually open, and the fire is also open. But when the smoke exhaust temperature reaches 280 C, the smoke exhaust fire valve closes automatically, and the linkage fan has been opened and stopped running.