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<!--------head结束----------><style> img{max-width:650px} </style> <!--------head结束----------> <div id="main"> <!--------内容开始----------> <div class="column"> <div class="column_l"> <div class="det"> <div class="det_title"> <ul> <li class="det_title_name">空调制冷系统(R410A)会出现哪些故障？</li> <!-- <li class="det_title_from">来源：<span>新华社</span></li> --> <li class="det_title_from"> 来源：<span>政府采购信息网</span></li> <li class="det_title_time">2018-10-19</li> </ul> </div> <div class="det_title_fenxiang"> <div class="fenxiang"> <!-- JiaThis Button BEGIN --> <div class="jiathis_style_32x32"> <a class="jiathis_button_weixin"></a> <a class="jiathis_button_tsina"></a> <a class="jiathis_button_cqq"></a> <a class="jiathis_button_qzone"></a> <a href="http://www.jiathis.com/share" class="jiathis jiathis_txt jiathis_separator jtico jtico_jiathis" target="_blank"></a> <a class="jiathis_counter_style"></a> </div> <script type="text/javascript" > var jiathis_config={ summary:"", shortUrl:false, hideMore:false } </script> <script type="text/javascript" src="http://v3.jiathis.com/code/jia.js" charset="utf-8"></script> <!-- JiaThis Button END --> </div> <div class="huifu"></div> </div> <div class="mess_text"> <div class="content" id="article"> <span style="font-family: "Microsoft YaHei"; font-size: 16px;"> </span><strong style="font-family: "Microsoft YaHei"; font-size: 16px;">1、制冷效果差</strong> <p style="padding: 0px; margin: 14px 0px; list-style: none; border: 0px; outline: 0px; font-family: "Microsoft YaHei"; font-size: 16px; text-indent: 0px;"> 推测系统有焊堵时，首先查看系统压力及电流是否正常，可以用压力表测量吸气压力，对于R410A工质，若整机运转时压力在0.9MPa左右（外环温在33~36℃间），电流接近额定电流，基本确定灌注量正常、系统不存焊堵；</p> <p style="padding: 0px; margin: 14px 0px; list-style: none; border: 0px; outline: 0px; font-family: "Microsoft YaHei"; font-size: 16px; text-indent: 0px;"> 若吸气压力、电流偏低较多，首先查看电子膨胀阀开度是否正常，可以在关机、开机时，细听膨胀阀开启或关闭的声音，若有“嗒、嗒”的动作声音，电子膨胀阀是正常的。</p> <p style="padding: 0px; margin: 14px 0px; list-style: none; border: 0px; outline: 0px; font-family: "Microsoft YaHei"; font-size: 16px; text-indent: 0px;"> 还可以观察电子膨胀阀节流后那段管温，若膨胀阀卡死无法打开，大小管、蒸发器翅片上感觉不到有冰冷的感觉，室内出风温度接近常温。若膨胀阀步数只能打开一点，可以观察节流后那段管路是否有结霜的现象。要是有结霜，和电子膨胀阀的打开步数或灌注量不足有关。</p> <p style="padding: 0px; margin: 14px 0px; list-style: none; border: 0px; outline: 0px; font-family: "Microsoft YaHei"; font-size: 16px; text-indent: 0px;"> 注：R410A：内机风挡为最高风挡，制冷吸气压力在0.70-1.10MPa；电流值在铭牌标称±30%以内；</p> <p style="padding: 0px; margin: 14px 0px; list-style: none; border: 0px; outline: 0px; font-family: "Microsoft YaHei"; font-size: 16px; text-indent: 0px;"> R22：内机风挡为最高风挡，制冷吸气压力在0.45-0.65MPa；电流值在铭牌标称±30%以内。</p> <p style="padding: 0px; margin: 14px 0px; list-style: none; border: 0px; outline: 0px; font-family: "Microsoft YaHei"; font-size: 16px; text-indent: 0px;"> <strong> 2、排查内机蒸发器有无焊堵</strong></p> <p style="padding: 0px; margin: 14px 0px; list-style: none; border: 0px; outline: 0px; font-family: "Microsoft YaHei"; font-size: 16px; text-indent: 0px;"> 开机制冷工况，拔出内机管温感温包（防止出现防冻结保护），将内<a class="hotl<em></em>inkmode" href="http://info.hvacr.hc360.com/list/fengji_zl.shtml" target="_blank" style="padding: 0px; margin: 0px; list-style: none; border: 0px; outline: 0px; text-decoration-line: none; color: rgb(15, 119, 244);">风机</a>的贯流风叶取出，待蒸发器表面结满霜后查看各管路结霜是否均匀，是否有个别分液管路没有出现结霜的现象，若分液支路没出现结霜，那条支路就有出现焊堵的可能。</p> <p style="padding: 0px; margin: 14px 0px; list-style: none; border: 0px; outline: 0px; font-family: "Microsoft YaHei"; font-size: 16px; text-indent: 0px;"> 一般蒸发器出现焊堵，制冷能力不足，功率、电流、压力都有会出现下降，吸排气温度也比正常的偏低。</p> <p style="padding: 0px; margin: 14px 0px; list-style: none; border: 0px; outline: 0px; font-family: "Microsoft YaHei"; font-size: 16px; text-indent: 0px;"> 若贯流风叶很难取出，也可采用以下方式验证结霜：除湿模式或制冷模式下开风挡最低档且用胶布或其它物料将内机进风口全部堵住，待蒸发器表面结霜后排查方法同上。</p> <p style="padding: 0px; margin: 14px 0px; list-style: none; border: 0px; outline: 0px; font-family: "Microsoft YaHei"; font-size: 16px; text-indent: 0px;"> 3、排查外机冷凝器有无焊堵。开制热工况，在超强风档下运行，取掉外风叶轴流风叶，查看冷凝器表面及各分路是否有结霜，同内机查堵相似，只要哪条支路表面没结霜的，这条支路可能焊堵。</p> <p style="padding: 0px; margin: 14px 0px; list-style: none; border: 0px; outline: 0px; font-family: "Microsoft YaHei"; font-size: 16px; text-indent: 0px;"> 4、排查<a class="hotl<em></em>inkmode" href="http://info.hvacr.hc360.com/list/ysj_zl.shtml" target="_blank" style="padding: 0px; margin: 0px; list-style: none; border: 0px; outline: 0px; text-decoration-line: none; color: rgb(15, 119, 244);">压缩机</a>有无吸、排气。首先接上压力表，测试停机后的平衡压力，然后开机制冷运行：1)、R410A一般有1.5MPa左右（30℃~35℃），开机运行后能下降到约1.0MPa以下。2)、R22一般有1MPa左右（30℃~35℃），开机运行后能下降到0.5MPa左右，表明压缩机吸、排气良好。</p></div> </div> <div class="xw_line"> </div> <div class="mess_footnote"> <ul> <li></li> <li></li> </ul> </div> <div class="fenxiang"> <!-- JiaThis Button BEGIN --> <div class="jiathis_style_32x32"> <a class="jiathis_button_weixin"></a> <a class="jiathis_button_tsina"></a> <a class="jiathis_button_cqq"></a> <a class="jiathis_button_qzone"></a> <a href="http://www.jiathis.com/share" class="jiathis jiathis_txt jiathis_separator jtico jtico_jiathis" target="_blank"></a> <a 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