我们都知道防火阀门和风口都是消防暖通工程中不可或缺的设备之一，起着至关重要的作用。阀门和风口属于两个不同的产品，安装于不同的位置分别起着不同的作用，但还有一种产品也是消防暖通工程中常出现的，大家应该也不会陌生，那就是多叶排烟口与多叶送风口了，它们可以说是阀门和风口两者的结合体了。多叶排烟口与多叶送风口两者之间只差一个字，加工工艺与做法也大致相同，但其安装的位置及所发挥的作用还是有一定区别的，小编来和大家讲一讲多叶排烟口与多叶送风口两者之间的不同之处。

       多叶排烟口一般安裝在走廊、电梯轿厢口、管路或是排烟室前或是无窗子的屋子里，不同点就在于当火灾发生时，它会将楼梯口或是过道里的烟气排到外面，排风与排烟的工作中由系统软件内的离心风机来进行，它负责接到数据信号时将出风口开启就完成它的任务了。

       多叶送风口大部分都安裝在房屋建筑的楼梯口或过道上，平常是呈关掉的情况的，一但发生火灾事故DC24V直流电源数据信号远程控制开启出风口，系统软件内相对的离心风机便会协调工作将排烟道内的烟气立即的运输出来。

       多叶排烟口与多叶送风口的目地是为了当发生火灾时，能够立即通过通风风管将烟气排出来，运输进新鲜的空气，以确保建筑物内被困人员和救援人员在开展救火抢险过程中所吸进的对身体危害有毒气体、浓烟、飘浮于空气中的危害空气污染物等快速排出室外，并确保有源源不绝的新鲜的空气进来，保证受困的大家一切正常的吸气。

       实际上排烟口也分为几种不同的类型：板式排烟口、多叶排烟口、其中还分为近控与远控等区别。这几种不同类型的排烟口都一直出现在各大项目中的原因不外乎它们都在不同的领域分别发挥着不同的重要作用。

We all know that fire valves and vents are one of the indispensable equipment in fire protection, heating and ventilation engineering, playing a vital role. The valve and air outlet belong to two different products, which are installed in different positions and play different roles. However, there is another product that often appears in the fire protection and HVAC engineering, and we should not be unfamiliar with it. That is, the multi leaf smoke outlet and the multi leaf air supply outlet, which can be said to be the combination of the valve and air outlet. There is only one word difference between the multi leaf smoke exhaust outlet and the multi leaf air supply outlet, and the processing technology and practice are roughly the same, but there are still some differences in the installation position and the role played. Let's talk about the differences between the multi leaf smoke exhaust outlet and the multi leaf air supply outlet.

Multi leaf smoke exhaust outlets are generally installed in corridors, elevator car openings, pipelines, or in front of smoke exhaust chambers or in rooms without windows. The difference is that when a fire occurs, it will exhaust the smoke from the stairway or corridor to the outside. The work of air exhaust and smoke exhaust is carried out by the centrifugal fan in the system software. It is responsible for opening the air outlet when receiving the data signal to complete its task.

Most of the multi leaf air supply outlets are installed at the stairway or aisle of the building, which is usually closed. Once the outlet is opened by remote control of DC24V DC power data signal in case of a fire accident, the relative centrifugal fan in the system software will coordinate to transport the smoke in the smoke exhaust duct immediately.

The purpose of multi leaf smoke exhaust outlet and multi leaf air supply outlet is to exhaust smoke through ventilation duct and transport fresh air in case of fire, so as to ensure that trapped people and rescue workers in the building can quickly exhaust toxic gases, thick smoke, hazardous air pollutants floating in the air and other harmful gases to the body during fire fighting and rescue, and ensure that there is an endless stream of fresh air coming in, Ensure that all trapped people breathe normally.

In fact, smoke vents are also divided into several different types: plate type smoke vents, multi blade smoke vents, among which there are differences between near control and remote control. The reason why these different types of smoke vents have always appeared in major projects is that they play different important roles in different fields.