空调静压送风道合理结构的分析研究

Study of Reasonable Structure of Duct for Static Pressure Air Supplyin the Air Conditioning System

对不同类型的空调静压送风系统进行了送风均匀性测试,测试结果表明,传统的空调静压送风道送风均匀性并不理想。分析了主风道内静压分布的特点,提出了静压主送风道应为变截面风道,这样才能保证主风道内的静压恒定。主风道为变截面的静压风道与传统的均匀风道不同,即使由于加工或安装的原因,使主风道的截面尺寸与设计稍有出入,但由于静压箱内的静压分布比较均匀,故仍能保证送风的均匀性。这种新型的静压均匀送风道适合于各种需要均匀送风的场合。

In this paper the supply air uniformity of different types of static pressure supply air duct is studied andthe experimental result shows that the supply air uniformity of traditional static pressure supply air duct isn't ideal. Byanalyzing the static pressure distributed characters in the main duct points out that the variable section area duct is areasonable structure of static pressure supply air duct, because the static pressure inside the variable section area ductcan be kept easily constant. This structure of supply air duct is apparently different from the traditional variable sectionarea supply air duct. Because the static pressure can be adjusted through the static pressure chambers of supply air ductwhile the section area of duct is changed for manufacturing or setting up, the supply air uniformity of this new staticpressure supply air duct can be guaranteed.