快速溫變(bian)試驗(yan)箱(xiang)主(zhu)要由試驗(yan)箱(xiang)、制冷(leng)系(xi)統(tong)(tong)、加(jia)熱系(xi)統(tong)(tong)、氣體(ti)循(xun)環系(xi)統(tong)(tong)和(he)控(kong)制系(xi)統(tong)(tong)組(zu)成。制冷(leng)系(xi)統(tong)(tong)冷(leng)卻試驗(yan)箱(xiang)、加(jia)熱系(xi)統(tong)(tong)加(jia)熱試驗(yan)箱(xiang)、氣體(ti)循(xun)環系(xi)統(tong)(tong)使試驗(yan)箱(xiang)內(nei)的空氣循(xun)環，防止產品表面和(he)內(nei)部(bu)霜凍。

快(kuai)速溫(wen)(wen)變試(shi)驗(yan)箱(xiang)主要(yao)在快(kuai)速溫(wen)(wen)度(du)(du)變化試(shi)驗(yan)箱(xiang)中(zhong)進(jin)行。當(dang)(dang)快(kuai)速溫(wen)(wen)變試(shi)驗(yan)箱(xiang)中(zhong)的(de)環境溫(wen)(wen)度(du)(du)升高時(shi)(shi)(shi)，由于熱慣(guan)性(xing)，產(chan)(chan)品(pin)(pin)表(biao)面(mian)的(de)溫(wen)(wen)度(du)(du)低(di)(di)(di)于環境溫(wen)(wen)度(du)(du)。當(dang)(dang)濕(shi)熱環境空氣遇到(dao)低(di)(di)(di)于露點的(de)產(chan)(chan)品(pin)(pin)表(biao)面(mian)時(shi)(shi)(shi)，水(shui)蒸氣會凝(ning)結在產(chan)(chan)品(pin)(pin)表(biao)面(mian)形成(cheng)露滴。此外(wai)，如果產(chan)(chan)品(pin)(pin)密封(feng)，當(dang)(dang)快(kuai)速溫(wen)(wen)變試(shi)驗(yan)箱(xiang)中(zhong)的(de)環境溫(wen)(wen)度(du)(du)降低(di)(di)(di)時(shi)(shi)(shi)，產(chan)(chan)品(pin)(pin)外(wai)殼(ke)的(de)內(nei)壁溫(wen)(wen)度(du)(du)比腔(qiang)內(nei)的(de)空氣溫(wen)(wen)度(du)(du)快(kuai)，腔(qiang)內(nei)的(de)濕(shi)熱空氣也會在產(chan)(chan)品(pin)(pin)外(wai)殼(ke)的(de)內(nei)壁凝(ning)結成(cheng)露滴。如果產(chan)(chan)品(pin)(pin)外(wai)殼(ke)溫(wen)(wen)度(du)(du)過低(di)(di)(di)，冷(leng)(leng)凝(ning)也會形成(cheng)霜凍。冷(leng)(leng)凝(ning)和霜凍對產(chan)(chan)品(pin)(pin)來(lai)說是致(zhi)命的(de)，從降低(di)(di)(di)產(chan)(chan)品(pin)(pin)壽命到(dao)損壞產(chan)(chan)品(pin)(pin)。因(yin)此，在冷(leng)(leng)卻過程中(zhong)應避免冷(leng)(leng)凝(ning)霜凍。

快速溫變試(shi)(shi)驗(yan)(yan)(yan)箱適用于電子(zi)元件的安全性(xing)(xing)能(neng)試(shi)(shi)驗(yan)(yan)(yan)、可(ke)靠性(xing)(xing)試(shi)(shi)驗(yan)(yan)(yan)和(he)(he)產(chan)(chan)品(pin)(pin)篩選(xuan)試(shi)(shi)驗(yan)(yan)(yan)。同(tong)時，通(tong)過設備試(shi)(shi)驗(yan)(yan)(yan)，可(ke)以(yi)提高產(chan)(chan)品(pin)(pin)的可(ke)靠性(xing)(xing)，控制產(chan)(chan)品(pin)(pin)的質量。試(shi)(shi)驗(yan)(yan)(yan)設備主要(yao)用于低溫、高溫等相關特性(xing)(xing)的環境模擬試(shi)(shi)驗(yan)(yan)(yan)。試(shi)(shi)驗(yan)(yan)(yan)后，通(tong)過試(shi)(shi)驗(yan)(yan)(yan)判斷產(chan)(chan)品(pin)(pin)的性(xing)(xing)能(neng)，是否仍能(neng)滿足預(yu)定的要(yao)求(qiu)，以(yi)便產(chan)(chan)品(pin)(pin)設計(ji)、改進、識別(bie)和(he)(he)出廠檢(jian)驗(yan)(yan)(yan)。