电子膨胀阀使用须知宫天泽海信科龙研发中心 2008-03Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.电子膨胀阀的特点n自锁型n永磁步进电机驱动n正反向流动皆可nDC12V矩形波控制n制冷剂适用范围广Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.电子膨胀阀使用注意事项n安装：阀体为轴，线圈朝上，竖直偏差小 于15度；n焊接：适当冷却，阀体温度不超过120度；n固定：线圈卡扣凸点与阀体凹槽定位牢靠 ；n过滤：进出口前配备100目以上过滤网；Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.电子膨胀阀的性能指标n流量特性曲线逆向开阀压力 ≥2.11MPaEvaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.电子膨胀阀控制简介n以目标排气温度为主要控制对象n开机初始阀开度控制方式n关机后全闭控制n定时、变步长调整开度n除霜定开度控制Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.电子膨胀阀优点n高频、低频运行时能效比提高；n压缩机可靠性提高，改善回油、回液、排 气温度过高状况；n整机运行可靠，吹水、凝露、过负荷问题 减少；n对制冷剂量变化的适应性增强；n舒适性增强，除霜时间短；Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.电子膨胀阀与毛细管性能比较EER频率30Hz90Hz电子膨胀阀毛细管Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.电子膨胀阀产品维修相关知识n充氟尽量在开机后的3～8分钟内；n膨胀阀故障首先尝试更换线圈；n传感器问题会导致膨胀阀控制不准；n拔掉电子膨胀阀线，膨胀阀开度维持不变 ；Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.常见节流故障故障现象主要原因分析解决措施1细管结冰 排气温度过高 毛细管堵 制冷剂不足 电子膨胀阀问题转制热运行、更换毛细管 ； 充氟 更换电 子膨胀阀 2粗管温度过低 毛细管过短 氟利昂过多 电子膨胀阀问题加毛长细 管 调整充注量 更换电 子膨胀阀3制热室外换热 器 下端结霜严重毛细管过长 氟利昂过多 电子膨胀阀问题减短毛细管 调整充注量 更换电 子膨胀阀4制热室外换热 器 上端结霜严重毛细管过短 单向阀失效 氟利昂过多 电子膨胀阀问题加毛长细 管 更换单 向阀 调整充注量 更换电 子膨胀阀Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.谢谢！Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.。