A kind of preheating device of pneumatic supply and damper interval pipelines, it is mainly that heating member is set in the pipeline between what connection pneumatic supply and damper, it uses and improves the gas temperature for entering damper and reduction relative humidity, it allows gas to be sufficiently mixed with vapor caused by damper heated moisture carrier in a short time, excessively exports condensation ponding caused by humidity to reduce damper.一種氣壓源與潮濕器區間管路的預熱裝置，主要係於連接氣壓源與潮濕器之間的管路內設置加熱件，藉以提高進入潮濕器的氣體溫度和降低相對濕度，使氣體能在短時間內即可與潮濕器受熱水分載體所產生的水蒸氣充分混合，以降低潮濕器過度輸出濕度所造成的冷凝積水。
