The working process of industrial flanged air duct mainly adopts two-stage compression refrigeration cycle, which is caused by different throttling series and intermediate cooling mode. The throttle series is divided into the first throttle and the second throttle. There are two ways of intermediate cooling: complete cooling in the middle, incomplete cooling in the middle and non-cooling in the middle.

　　工业法兰风管是指由冷凝压力到蒸发压力由一个节流阀来完成;二次流时，风机盘管是指一个节流阀将冷凝压力节流到中压，另一个节流阀将中压节流到蒸发压力。中间完全冷却是指低压压缩机废气在中间压力下等压冷却为饱和蒸汽。中间不完全冷却是指低压压缩机排气等压冷却，但未达到饱和，仍为过热蒸汽。中间不冷却是指低压压缩机的废气直接进入高压压缩机，中间不冷却。因此，两级压缩制冷循环可分为五种形式。

　　Industrial flanged duct refers to a throttle valve from condensation pressure to evaporation pressure. In secondary flow, fan coil unit refers to a throttle valve that throttles condensation pressure to medium pressure, and another throttle valve that throttles medium pressure to evaporation pressure. Intermediate complete cooling refers to the isobaric cooling of low pressure compressor exhaust gas to saturated steam under intermediate pressure. Intermediate incomplete cooling refers to the isobaric cooling of exhaust gas of low pressure compressor, but it is still superheated steam when it is not saturated. Intermediate non-cooling means that the exhaust gas of low-pressure compressor enters into high-pressure compressor directly and does not cool in the middle. Therefore, two-stage compression refrigeration cycle can be divided into five forms.

　　正压送风口种类繁多，应用范围广。单层百叶风口可上下调节风向，回风口可与风口滤清器配套使用，可调节节段角度，叶片之间有ABS塑料固定支架。固定滤网清洗时可从滑块上取下，清洗后再从滑块上取下继续使用。双层100页风口一般用作送风口，也可直接与风机盘管配套使用，广泛应用于集中空调系统的末端，也可与对面的多叶调节阀配套使用，调节风量。

　　There are many kinds of positive pressure air outlets and they are widely used. The single-layer louver tuyere can adjust the wind direction up and down, the return tuyere can be matched with the tuyere filter, and the segment angle can be adjusted. There is ABS plastic fixing bracket between the blades. Fixed filter can be removed from the slider when cleaning, and then removed from the slider to continue to use. Double-layer 100-page air outlet is generally used as air supply outlet, and can also be directly used with fan-coil units. It is widely used at the end of central air-conditioning system. It can also be used with the opposite multi-leaf control valve to adjust air volume.

　　工业法兰风管主要用于空调和通风系统,以及配套产品的新风处理机组和风机盘管,主要是为了空气出口的气流噪声,并提高系统的静态压力和稳定的气流通过配置系统的静压箱,使空气分布更加合理,达到理想的空调效果。将风量均匀分布，安装在通风管道中，在昼相时，便于控制分配，扩压器正确，与昼相协调，风量平稳;消声静压箱也可安装在顶棚结构的通风管道上，可减少安装空间，形成和谐的布局，美观的立体造型。

　　Industrial flanged air ducts are mainly used in air conditioning and ventilation systems, fresh air treatment units and fan coil units of matching products. The main purpose is to eliminate the air noise at the air outlet, and to improve the static pressure of the system and the stable air flow through the static pressure box of the system, so as to make the air distribution more reasonable and achieve the ideal air conditioning effect. The air volume is evenly distributed and installed in the ventilation duct. In the daytime phase, it is easy to control and distribute. The diffuser is correct and coordinated with the day, and the air volume is stable. The silencing static pressure box can also be installed in the ventilation duct of the ceiling structure, which can reduce the installation space, form a harmonious layout and beautiful three-dimensional shape.

　　工业法兰风管是供气系统降低动压、增加静压、稳定风量和减少空气振荡的必要附件，一般采用镀锌钢板制造，可使供气效果更加吸人。了解静压箱项目的例子:一个体育馆站很大面积,更多的席位,小和许多空气供应渠道,以满足代表空气供给的需求,使用传统的管道通风系统是难以实现的,使用听众建立天花板空间。工艺简单，适用性强，出水水质好。

　　Industrial flanged air duct is a necessary accessory for air supply system to reduce dynamic pressure, increase static pressure, stabilize air flow and reduce air oscillation. Generally, galvanized steel sheet is used to make the air supply effect more attractive. Comprehensive understanding of the static pressure box project example: a gymnasium station large area, more seats, small and many air supply channels to meet the demand for air supply on behalf of the traditional duct ventilation system is difficult to achieve, using the audience to establish ceiling space. The process is simple, the applicability is strong, and the effluent quality is good.