通风管道生活中到处都能看到，但通风管道看着简简单单，实际每个都是由不同的功能组成的，下面就是看看，通风管道是怎么组成的。

Ventilation ducts can be seen everywhere in daily life, but they may seem simple, but in reality, each one is composed of different functions. Let's take a look at how ventilation ducts are made up.

1、通风管道。在通风系统中，依靠通风管来送入或抽出空气。通风管的截面有圆形和矩形。通风管除直管外，由弯头、来回弯、变径弯，三通、四通等管件按工程实际需要组合而成。

1. Ventilation ducts. In a ventilation system, air is drawn in or out through ventilation ducts. The cross-section of ventilation ducts can be circular or rectangular. Ventilation pipes, in addition to straight pipes, are composed of elbows, back and forth bends, variable diameter bends, tees, crosses, and other pipe fittings combined according to the actual needs of the project.

2、各类风口。为了向室内送入或室内排出空气，在通风管上设置的各种型式的送风口或吸风口，以调节送入或吸出的空气量。风口的类型很多，常用的类型是装有网状和条形格栅的矩形风口，设有联动调节装置，其他的类型没有联动调节装置。风口分为单层、双层、三层及不同形式的散流器。

2. Various types of air vents. Various types of air supply or suction ports are installed on ventilation ducts to regulate the amount of air that is supplied or drawn into or out of the room. There are many types of air vents, with the commonly used being rectangular vents equipped with mesh and bar grilles, with linkage adjustment devices, while other types do not have linkage adjustment devices. The air outlet is divided into single-layer, double-layer, three-layer, and different forms of diffusers.

3、阀门。安装于风管上的用以调节风量和关闭个别支管的通风部件。通风与空调工程常用的阀门有插板阀、蝶阀、多叶调节阀、圆开瓣式启动阀、空气处理室中旁通阀、防火阀和止回阀等，

3. Valves. Ventilation components installed on air ducts to regulate air volume and close individual branch pipes. The commonly used valves in ventilation and air conditioning engineering include plug valves, butterfly valves, multi blade regulating valves, circular opening type starting valves, bypass valves in air handling rooms, fire dampers, and check valves,

4、消声器。防止噪声传入室内所采用的装置。在空调工程中采用的有阻性捎声器、抗性捎声顺、共振性消声器和宽频带复合式消声器等。

4. Silencer. The device used to prevent noise from entering indoors. Resistive silencers, resistant silencers, resonant silencers, and wideband composite silencers used in air conditioning engineering.

5、除尘器。是净化空气的一种设备，一般分为旋风式除尘器、湿式除尘器和袋式除尘器等。

5. Dust collector. It is a device for purifying air, generally divided into cyclone dust collector, wet dust collector, bag filter, etc.

6、通风机。是机械通风系统中迫使空气流动的机械。通风机是通风与空调系统的主要设备，根据构造原理分为轴流式通风机和离心式通风机两类。

6. Ventilation fan. It is a mechanical device in a mechanical ventilation system that forces air flow. Ventilators are the main equipment of ventilation and air conditioning systems, which are divided into two categories based on their construction principles: axial flow fans and centrifugal fans.

7、风帽。它用于排风系统的末端，它的作用是向室外排除污浊空气。按其形式分有：适用于一般机械排风系统的伞形风帽，适用于除尘系统的锥形风帽，适用于自然排风系统的简形风帽

7. Wind hat. It is used at the end of the exhaust system to remove polluted air from the outside. According to their forms, there are umbrella shaped air caps suitable for general mechanical exhaust systems, conical air caps suitable for dust removal systems, and simplified air caps suitable for natural exhaust systems

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