消防排烟风机和正压送风机区别：
Difference between fire smoke exhaust fan and positive pressure forced draft fan:
1、正压送风机是指向逃生楼道里送风的风机。它将室外风压送入室内。当建筑物发生火灾时，会产生大量烟雾、一氧化碳等有毒体并遮挡视线，通过正压送风机给逃生的消防楼梯送风，使室内的烟雾不能抵达楼梯，给人们逃生创造条件。
1. The positive pressure forced draft fan is the fan that points to the air supply in the escape corridor. It sends wind pressure from the outside into the room. When a building fires, it will produce a lot of smoke, carbon monoxide and other toxic substances and block the line of sight, through the positive pressure blower to the escape of the fire stairs, so that the indoor smoke can not reach the stairs, to create conditions for people to escape.
正压送风机一般装于建筑物顶，与各层的正压风阀联动。火灾初期时打开风阀，启动正压送风机，使楼梯间、电梯厅处于正压状态（送风状态）。
The positive pressure forced draft fan is generally installed on the top of the building and linked with the positive pressure air valve on each floor. In the early stage of fire, open the air valve and start the positive pressure blower to make the staircase and elevator hall in the positive pressure state (air supply state).
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送风机=正压风机=补风机,叫法不同而以,多种用途,输送气体温度80℃以下
Forced draft fan = positive pressure fan = make-up fan, which is called differently and has many uses. The temperature of conveying gas is below 80 ℃
2、正压送风机是向逃生楼道里送风的风机,在意外发生的时候向逃生楼道里送风,利于逃生,同时送风时楼道内处于正压,也就是说楼道的气压比别的地方高,烟雾不会渗进来而引起人员窒息,以保证安全
2. The positive pressure blower is a blower that supplies air to the escape corridor. When an accident occurs, it supplies air to the escape corridor, which is conducive to escape. At the same time, when the air is supplied, the corridor is under positive pressure. That is to say, the air pressure in the corridor is higher than that in other places, and the smoke will not seep in and cause suffocation, so as to ensure safety