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class="zx_txt"> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""><img src="/uploadfile/image/20221128/20221128085907_82790.png" alt="" width="600" height="312" title="" align="" /> </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 現(xiàn)在<span style="color:#353535;"><span style="outline-color:initial;cursor:pointer;transition-duration:0.3s;transition-property:all;">制冷</span></span>機(jī)廣泛使用在<span style="color:#353535;"><span style="outline-color:initial;cursor:pointer;transition-duration:0.3s;transition-property:all;">冷凍冷藏</span></span>行業(yè)中，制冷工質(zhì)通常為R22(R134a也有)等。為便于操作維修，縮小安裝位置，通常將制冷<span style="color:#353535;"><span style="outline-color:initial;cursor:pointer;transition-duration:0.3s;transition-property:all;">壓縮機(jī)</span></span>、油分離器、水冷殼管式冷凝器、干燥過濾器、電磁閥等部件安裝在同一機(jī)座上，組成壓縮冷凝機(jī)組。再用管道通過膨脹閥與蒸發(fā)器連接，形成一個完整的制冷系統(tǒng)。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 制冷系統(tǒng)運(yùn)行中的正常工況： </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 1、壓縮機(jī)的吸氣溫度應(yīng)比蒸發(fā)溫度高5-15℃。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 2、壓縮機(jī)的排氣溫度R22系統(tǒng)不得超過150℃。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 3、壓縮機(jī)曲軸箱的油溫不得超過70℃。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 4、壓縮機(jī)的吸氣壓力應(yīng)與蒸發(fā)壓力相對應(yīng)。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 5、壓縮機(jī)的排氣壓力R22系統(tǒng)不得超過1.8MPa。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 6、壓縮機(jī)的油壓比吸氣壓力高0.12-0.3MPa。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 7、經(jīng)常注意冷卻水量和水溫，冷凝器的出水溫度應(yīng)比進(jìn)水溫度高出2-5℃為宜。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 8、經(jīng)常注意壓縮機(jī)曲軸箱的油面和油分離器的回油情況。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 9、壓縮機(jī)不應(yīng)有任何敲擊聲，機(jī)體各部發(fā)熱應(yīng)正常。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 10、冷凝壓力不得超過壓縮機(jī)的排氣壓力范圍。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""><img src="/uploadfile/image/20221128/20221128085950_70919.png" alt="" /> </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 制冷系統(tǒng)的運(yùn)行調(diào)整： </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 壓縮機(jī)的吸氣壓力是膨脹閥調(diào)節(jié)壓力的重要參考參數(shù)。膨脹閥的開啟度小，<span style="color:#353535;"><span style="outline-color:initial;cursor:pointer;transition-duration:0.3s;transition-property:all;">制冷劑</span></span>通過的流量就少，壓力也低;膨脹閥的開啟度大，制冷劑通過的流量就多，壓力也高。根據(jù)制冷劑的熱力性質(zhì)，壓力越低，相對應(yīng)的溫度就越低;壓力越高，相對應(yīng)的溫度也就越高。按照這一定律，如果膨脹閥出口壓力過低，相應(yīng)的蒸發(fā)壓力和溫度也過低。但由于進(jìn)入蒸發(fā)器流量的減少，壓力的降低，造成蒸發(fā)速度減慢，單位容積(時間)<span style="color:#353535;"><span style="outline-color:initial;cursor:pointer;transition-duration:0.3s;transition-property:all;">制冷量</span></span>下降，制冷效率降低。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 相反，如果膨脹閥出口壓力過高，相應(yīng)的蒸發(fā)壓力和溫度也過高。進(jìn)入蒸發(fā)器的流量和壓力都加大，由于液體蒸發(fā)過剩，過潮氣體(甚至液體)被壓縮機(jī)吸入，引起壓縮機(jī)的濕沖程(液擊)，使壓縮機(jī)不能正常工作，造成一系列工況惡劣，甚至損壞壓縮機(jī)。由此看來，正確調(diào)整膨脹閥對系統(tǒng)的運(yùn)行顯得尤為重要。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 如果發(fā)出較明顯的“絲絲”聲，說明系統(tǒng)中制冷劑不足。當(dāng)膨脹閥出現(xiàn)感溫系統(tǒng)漏氣、調(diào)節(jié)失靈等故障時應(yīng)予更換。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 壓縮機(jī)的排氣溫度過高： </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 1、吸氣壓力過低，吸排氣壓差過大(氣缸壓縮比大)，膨脹閥的開啟度小，調(diào)節(jié)壓力低。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 2、吸氣溫度過高，即吸氣過熱度大，吸氣管過長或保溫效果差。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 3、冷卻水量不足或水溫過高。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 4、系統(tǒng)中不凝性氣體(空氣)過多。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 5、冷凝壓力過高，相應(yīng)的冷凝溫度也高，引起排氣溫度升高。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 6、壓縮機(jī)氣缸或閥組故障。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 壓縮機(jī)的排氣壓力過高： </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 1、系統(tǒng)中不凝性氣體(空氣)過多。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 2、冷卻水量不足或水溫過高。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 3、冷凝器太臟，結(jié)垢過多。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 4、系統(tǒng)中制冷劑過多。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 壓縮機(jī)的油溫過高： </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 1、壓縮機(jī)的吸排氣溫度過高。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 2、潤滑油太臟或油質(zhì)太差 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 3、壓縮機(jī)機(jī)件磨損嚴(yán)重。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 冷凝壓力和冷凝溫度過高： </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 1、冷凝器冷卻水量不足或水溫過高。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 2、冷凝器太臟，結(jié)垢過多。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 3、系統(tǒng)中不凝性氣體(空氣)過多。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 4、系統(tǒng)中制冷劑過多。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 5、冷凝器的傳熱面積配置過小。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""> 經(jīng)常檢查和掌握制冷系統(tǒng)的運(yùn)行工況，排除運(yùn)行故障，隨時消除不正?，F(xiàn)象，認(rèn)真細(xì)致地將系統(tǒng)調(diào)整在狀態(tài)，對制冷系統(tǒng)能否安全正常經(jīng)濟(jì)運(yùn)行是十分關(guān)鍵的，是檢驗操作人員的技術(shù)素質(zhì)和責(zé)任心的根本標(biāo)準(zhǔn)。 </p> <p style="margin-top:0px;margin-bottom:30px;outline:none 0px;padding:0px;font-size:18px;line-height:32px;color:#4D4F53;letter-spacing:1px;font-family:" microsoft="" yahei",="" tahoma,="" simsun,="" 宋體;white-space:normal;background-color:#ffffff;"=""><br /> </p> <p class="p" style="margin-top:0.0000pt;margin-right:0.0000pt;margin-bottom:0.0000pt;text-indent:21.0000pt;mso-char-indent-count:2.0000;padding:0pt 0pt 0pt 0pt;mso-pagination:widow-orphan;"> 本文采于由循環(huán)水處理網(wǎng) http://www.15minuteseveryday.com 分享，專注于中央空調(diào)行業(yè)的循環(huán)水處理綜合性網(wǎng)站，主營有循環(huán)水處理藥劑及服務(wù)：<a href="http://www.15minuteseveryday.com/html/list-3-1.html"><u><span style="font-family:微軟雅黑;">除垢除銹清洗劑</span></u></a>、<a href="http://www.15minuteseveryday.com/html/list-3-1.html"><u><span 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