[恒溫恒濕試驗箱]怎樣控制恒溫恒濕試(shi)驗(yan)箱的(de)溫度

　　恒(heng)溫恒(heng)濕(shi)試驗(yan)箱是如(ru)何來實現溫、降(jiang)溫、加濕(shi)，降(jiang)濕(shi)的呢(ni)？

　　恒(heng)溫(wen)(wen)(wen)恒(heng)濕(shi)(shi)(shi)試(shi)驗箱(xiang)擁有加(jia)溫(wen)(wen)(wen)、降(jiang)溫(wen)(wen)(wen)、加(jia)濕(shi)(shi)(shi)，降(jiang)濕(shi)(shi)(shi)的(de)(de)功(gong)能，因此完美準(zhun)確(que)地模擬(ni)出(chu)了自然界復雜的(de)(de)低(di)溫(wen)(wen)(wen)、高溫(wen)(wen)(wen)、高溫(wen)(wen)(wen)高濕(shi)(shi)(shi)、低(di)溫(wen)(wen)(wen)低(di)濕(shi)(shi)(shi)環境。通常塑膠、電子、食品、服(fu)裝、車輛(liang)、金屬、化學、建材(cai)等多種行(xing)業用恒(heng)溫(wen)(wen)(wen)恒(heng)濕(shi)(shi)(shi)試(shi)驗箱(xiang)來檢驗產品耐(nai)高溫(wen)(wen)(wen)，耐(nai)低(di)溫(wen)(wen)(wen)和抗濕(shi)(shi)(shi)度的(de)(de)能力；試(shi)驗室和研究所可以(yi)用恒(heng)溫(wen)(wen)(wen)恒(heng)濕(shi)(shi)(shi)試(shi)驗箱(xiang)來檢驗并設計出(chu)新型產品。那么(me)恒(heng)溫(wen)(wen)(wen)恒(heng)濕(shi)(shi)(shi)試(shi)驗箱(xiang)是(shi)如何實現(xian)這4大功(gong)能的(de)(de)呢？

　　為了更(geng)清晰明(ming)(ming)白地(di)講明(ming)(ming)這(zhe)個(ge)工作原理，我(wo)們將分為兩個(ge)部分進行闡(chan)述：

　　一、溫濕度系統(tong)系統(tong)

　　1、制冷系統

　　制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)系統是(shi)(shi)恒(heng)(heng)溫恒(heng)(heng)濕試驗箱中的(de)(de)(de)關鍵部件(jian)之一，是(shi)(shi)整個設(she)(she)計的(de)(de)(de)重點和(he)(he)難點，其設(she)(she)計質量好壞直接影(ying)響試驗箱的(de)(de)(de)性能優劣。我(wo)公司常用制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)方式(shi)是(shi)(shi)機械(xie)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)，即蒸氣壓縮機制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)；采(cai)用了(le)最成熟(shu)的(de)(de)(de)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)技術(shu)，確保制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)性能穩定(ding)，根據用戶對恒(heng)(heng)溫恒(heng)(heng)濕試驗箱低溫程度(du)要(yao)求的(de)(de)(de)不同，可以分別采(cai)取單級(ji)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)、雙級(ji)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)和(he)(he)復疊(die)式(shi)制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)。其制(zhi)(zhi)(zhi)冷(leng)(leng)(leng)原理都是(shi)(shi)一樣的(de)(de)(de)。

　　制(zhi)冷系統(tong)(tong)由壓(ya)縮(suo)機(ji)(ji)、冷凝器(qi)(qi)、節流裝(zhuang)置、蒸(zheng)發(fa)(fa)器(qi)(qi)四大組成(cheng)。壓(ya)縮(suo)機(ji)(ji)是(shi)制(zhi)冷系統(tong)(tong)心臟，它吸(xi)(xi)(xi)入低(di)溫(wen)低(di)壓(ya)氣(qi)(qi)體(ti)，變成(cheng)高溫(wen)高壓(ya)氣(qi)(qi)體(ti)，通(tong)過(guo)冷凝成(cheng)液體(ti)放(fang)出熱量(liang)(liang)，通(tong)過(guo)風(feng)機(ji)(ji)帶走(zou)熱量(liang)(liang)，所以試驗箱(xiang)(xiang)下面是(shi)熱風(feng)原因，然(ran)后通(tong)過(guo)節流成(cheng)為低(di)壓(ya)液體(ti)，其(qi)次通(tong)過(guo)蒸(zheng)發(fa)(fa)器(qi)(qi)成(cheng)為低(di)溫(wen)低(di)壓(ya)氣(qi)(qi)體(ti)最后回到(dao)壓(ya)縮(suo)機(ji)(ji)；制(zhi)冷劑在蒸(zheng)發(fa)(fa)器(qi)(qi)中吸(xi)(xi)(xi)收熱量(liang)(liang)完成(cheng)氣(qi)(qi)化過(guo)程重而(er)吸(xi)(xi)(xi)收熱量(liang)(liang)，這個過(guo)程不斷(duan)循環，不斷(duan)地與四周介質進(jin)行(xing)熱交換(huan)將(jiang)熱量(liang)(liang)傳給四周介質，達到(dao)制(zhi)冷目(mu)的(de)，完成(cheng)恒溫(wen)恒濕(shi)試驗箱(xiang)(xiang)降溫(wen)過(guo)程。

　　2、加溫系統

　　加溫(wen)(wen)原理很簡單，鎳鉻合(he)金不銹管加熱(re)器(qi)兩端有電壓，可(ke)以通(tong)過(guo)(guo)控制器(qi)使其加熱(re)，最(zui)后通(tong)過(guo)(guo)熱(re)風循環(huan)把熱(re)量帶到箱里，使恒(heng)溫(wen)(wen)恒(heng)濕試驗箱升溫(wen)(wen)。

　　3、加濕系統

　　恒(heng)溫(wen)恒(heng)濕試驗(yan)箱的加(jia)濕方式一般采(cai)用蒸汽加(jia)濕法(fa)，即將低壓蒸汽直接注入試驗(yan)空(kong)間加(jia)濕.這種加(jia)濕方法(fa)加(jia)濕能(neng)力，速度快，加(jia)濕控制靈(ling)敏(min),尤其在(zai)降溫(wen)時可以輕易(yi)實現(xian)強制加(jia)濕。

　　廣(guang)東(dong)劍喬(qiao)試(shi)驗(yan)(yan)(yan)(yan)設備(bei)有限公(gong)司是專(zhuan)注于(yu)振(zhen)動及(ji)環境試(shi)驗(yan)(yan)(yan)(yan)設備(bei)研(yan)發、生(sheng)產(chan)、銷(xiao)售大型生(sheng)產(chan)廠家,主(zhu)營產(chan)品(pin)：振(zhen)動臺(tai)、振(zhen)動試(shi)驗(yan)(yan)(yan)(yan)機(ji)(ji)、振(zhen)動試(shi)驗(yan)(yan)(yan)(yan)臺(tai)、沖擊試(shi)驗(yan)(yan)(yan)(yan)臺(tai)、沖擊試(shi)驗(yan)(yan)(yan)(yan)機(ji)(ji)、老化房(fang)、恒(heng)(heng)溫(wen)恒(heng)(heng)濕試(shi)驗(yan)(yan)(yan)(yan)室、恒(heng)(heng)溫(wen)恒(heng)(heng)濕機(ji)(ji)、快速溫(wen)變試(shi)驗(yan)(yan)(yan)(yan)箱(xiang)、高低溫(wen)試(shi)驗(yan)(yan)(yan)(yan)箱(xiang)、冷熱沖擊試(shi)驗(yan)(yan)(yan)(yan)箱(xiang)、冷熱沖擊箱(xiang)、恒(heng)(heng)溫(wen)恒(heng)(heng)濕箱(xiang)、恒(heng)(heng)溫(wen)恒(heng)(heng)濕試(shi)驗(yan)(yan)(yan)(yan)箱(xiang)等產(chan)品(pin)。