Exhaust smoke fan:

排煙風機反轉通常會有逆向的風。排煙風機反向旋轉，使之產生反向的風。排煙風機是將廚房中加工食物過程中產生的異味、高溫、油煙氣體迅速排走的機械。廚房中各種煎、炒、蒸、煮、炸、烤等設備在加工食物過程中不斷產生各種高溫、潮濕、污染的氣體。累計到一定程度、廚房將不適直繼續工作.需要使用風機將污染氣體經由排煙管道排出廚房。

The reverse direction of the smoke exhaust fan usually results in reverse wind. The smoke exhaust fan rotates in the opposite direction, causing it to generate reverse wind. Smoke exhaust fan is a mechanical device that quickly removes odors, high temperatures, and fumes generated during food processing in the kitchen. Various equipment in the kitchen, such as frying, frying, steaming, boiling, frying, and grilling, constantly produce various high temperature, humid, and polluting gases during the processing of food. If it accumulates to a certain extent, the kitchen will become uncomfortable and continue working. It is necessary to use a fan to exhaust the polluted gas from the kitchen through the exhaust pipe.

消防排煙風機：

Fire exhaust fan:

消防排煙風機主要是指當室內發生火災的時候，會冒出很多的濃煙，它作用就是將這些濃煙排出室內。消防排煙風機有一個排煙閥，排煙閥平時你都是關著的，當火災發生的時候自動開啟，它是與報警主機連著的，開啟的條件是自動報警系統發生火警消防報警主機處于自動狀態，消防排煙閥自動開啟，聯動消防排煙風機啟動。消防排煙風機的作用。它主要使用于高層建筑、地下室、大型廚房等等。

The fire exhaust fan mainly refers to the smoke that emits a lot of thick smoke when a fire occurs indoors, and its function is to exhaust these thick smoke indoors. The fire exhaust fan has a smoke exhaust valve, which is usually closed by you. When a fire occurs, it automatically opens and is connected to the alarm host. The opening condition is that the automatic alarm system generates a fire alarm, and the fire alarm host is in an automatic state. The fire exhaust valve automatically opens and the linkage fire exhaust fan starts. The role of fire exhaust fans. It is mainly used in high-rise buildings, basements, large kitchens, and so on.

排油煙風機風閥和消防排煙風機風閥雖然都是防排煙系統，但它們是完全不同的產品，排煙管道未端設置排煙閥，排煙風機與排煙管道連接處設置排煙防火閥。要注意排煙閥與排煙防火閥是功能完全不同的設備。

Although both the oil smoke exhaust fan and fire smoke exhaust fan are smoke control systems, they are completely different products. Smoke exhaust pipes are not equipped with smoke exhaust valves at the end, and smoke exhaust fire dampers are installed at the connection between the smoke exhaust fan and the smoke exhaust pipe. It should be noted that smoke exhaust valves and smoke fire dampers are devices with completely different functions.

排煙閥平時常關，火災時開，與報警主機聯動，開啟條件是自動報警系統發生火警（探測器報警）消防報警主機置于自動狀態，消防排煙閥自動開啟，聯動消防排煙風機啟動。

The smoke exhaust valve is usually closed and opened in case of a fire. It is linked to the alarm host. The opening condition is that the automatic alarm system generates a fire alarm (detector alarm), and the fire alarm host is in automatic mode. The fire exhaust valve automatically opens, and the linked fire exhaust fan starts.

排煙防火閥是平時常開，火災時也是開啟狀態，但當煙氣溫度達到280℃時，排煙防火閥自動關閉，聯動已經開啟的風機停止運行，消防報警主機聯動的排煙風機在消防系統中都屬于防排煙系統。但消防排煙風機完成上述工作的前提是排煙消防風機控制柜置于自動工作狀態，消防排煙風機的工作原理大致就這么多。主要是起消防通風作用，注意當風機控制柜置于手動狀態時，不會與消防報警系統聯動.

The smoke exhaust fire damper is usually open, and it is also in the open state during a fire. However, when the smoke temperature reaches 280 ℃, the smoke exhaust fire damper automatically closes, and the fan that has been linked to it stops running. The smoke exhaust fan that is linked to the fire alarm host belongs to the smoke exhaust system in the fire protection system. But the premise for the fire exhaust fan to complete the above work is that the control cabinet of the smoke exhaust fan is placed in automatic operation, and the working principle of the fire exhaust fan is roughly as follows. Mainly used for fire ventilation, please note that when the fan control cabinet is in manual mode, it will not be linked with the fire alarm system