排风烟风机：
Exhaust smoke fan:
排烟风机反转通常会有逆向的风。排烟风机反向旋转，使之产生反向的风。排烟风机是将厨房中加工食物过程中产生的异味、高温、油烟气体迅速排走的机械。厨房中各种煎、炒、蒸、煮、炸、烤等设备在加工食物过程中不断产生各种高温、潮湿、污染的气体。累计到一定程度、厨房将不适直继续工作.需要使用风机将污染气体经由排烟管道排出厨房。
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.
消防排烟风机：
Fire exhaust fan:
消防排烟风机主要是指当室内发生火灾的时候，会冒出很多的浓烟，它作用就是将这些浓烟排出室内。消防排烟风机有一个排烟阀，排烟阀平时你都是关着的，当火灾发生的时候自动开启，它是与报警主机连着的，开启的条件是自动报警系统发生火警消防报警主机处于自动状态，消防排烟阀自动开启，联动消防排烟风机启动。消防排烟风机的作用。它主要使用于高层建筑、地下室、大型厨房等等。
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.
排油烟风机风阀和消防排烟风机风阀虽然都是防排烟系统，但它们是完全不同的产品，排烟管道未端设置排烟阀，排烟风机与排烟管道连接处设置排烟防火阀。要注意排烟阀与排烟防火阀是功能完全不同的设备。
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.
排烟阀平时常关，火灾时开，与报警主机联动，开启条件是自动报警系统发生火警（探测器报警）消防报警主机置于自动状态，消防排烟阀自动开启，联动消防排烟风机启动。
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.
排烟防火阀是平时常开，火灾时也是开启状态，但当烟气温度达到280℃时，排烟防火阀自动关闭，联动已经开启的风机停止运行，消防报警主机联动的排烟风机在消防系统中都属于防排烟系统。但消防排烟风机完成上述工作的前提是排烟消防风机控制柜置于自动工作状态，消防排烟风机的工作原理大致就这么多。主要是起消防通风作用，注意当风机控制柜置于手动状态时，不会与消防报警系统联动.
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
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