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　　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.

　　工業法蘭風管是指由冷凝壓力到蒸發壓力由一個節流閥來完成;二次流時，風機盤管是指一個節流閥將冷凝壓力節流到中壓，另一個節流閥將中壓節流到蒸發壓力。中間完全冷卻是指低壓壓縮機廢氣在中間壓力下等壓冷卻為飽和蒸汽。中間不完全冷卻是指低壓壓縮機排氣等壓冷卻，但未達到飽和，仍為過熱蒸汽。中間不冷卻是指低壓壓縮機的廢氣直接進入高壓壓縮機，中間不冷卻。因此，兩級壓縮制冷循環可分為五種形式。

　　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.

　　正壓送風口種類繁多，應用范圍廣。單層百葉風口可上下調節風向，回風口可與風口濾清器配套使用，可調節節段角度，葉片之間有ABS塑料固定支架。固定濾網清洗時可從滑塊上取下，清洗后再從滑塊上取下繼續使用。雙層100頁風口一般用作送風口，也可直接與風機盤管配套使用，廣泛應用于集中空調系統的末端，也可與對面的多葉調節閥配套使用，調節風量。

　　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.

　　工業法蘭風管主要用于空調和通風系統,以及配套產品的新風處理機組和風機盤管,主要是為了消除空氣出口的氣流噪聲,并提高系統的靜態壓力和穩定的氣流通過配置系統的靜壓箱,使空氣分布更加合理,達到理想的空調效果。將風量均勻分布，安裝在通風管道中，在晝相時，便于控制分配，擴壓器正確，與晝相協調，風量平穩;消聲靜壓箱也可安裝在頂棚結構的通風管道上，可減少安裝空間，形成和諧的布局，美觀的立體造型。

　　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.

　　工業法蘭風管是供氣系統降低動壓、增加靜壓、穩定風量和減少空氣振蕩的必要附件，一般采用鍍鋅鋼板制造，可使供氣效果更加吸人。全面了解靜壓箱項目的例子:一個體育館站很大面積,更多的席位,小和許多空氣供應渠道,以滿足代表空氣供給的需求,使用傳統的管道通風系統是難以實現的,使用聽眾建立天花板空間。工藝簡單，適用性強，出水水質好。

　　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.