基于毛细作用原理的电子膨胀阀线圈气孔研究与控制

Research and Control of Air Hole of Electronic Expansion Valve Coil Based on Capillary Action Principle

根据冷媒流向,制热时,线圈在节流后存在冷凝水凝聚和结霜。如果线圈有气孔,在水分毛细作用下,水分渗入线圈内部,伴随空调除霜切换,水分相态不断变化,将会产生"冻融侵蚀"效应。

According to the flow direction of refrigerant, there is condensation and frosting in the coil after throttling during heating. If there are pores in the coil, under the action of water capillarity, water infiltrates into the coil, and with the defrosting switch of air conditioner, the water phase state changes constantly, which will produce the "freezethaw erosion" effect.