防(Fang)爆(Bao)真(Zhen)空(Kong)干(Gan)燥(Zao)箱(Xiang)应(Ying)用(Yong)于(Yu)化(Hua)工(Gong)、(?)医(Yi)疗(Liao)、(?)农(Nong)业(Ye)生(Sheng)产(Chan)各(Ge)领(Ling)域(Yu)的(De)化(Hua)验(Yan)室(Shi)内(Nei)，(?)但(Dan)防(Fang)爆(Bao)真(Zhen)空(Kong)干(Gan)燥(Zao)箱(Xiang)又(You)不(Bu)同(Tong)于(Yu)其(Qi)他(Ta)一(Yi)般(Ban)防(Fang)爆(Bao)加(Jia)热(Re)恒(Heng)温(Wen)干(Gan)燥(Zao)箱(Xiang)，(?)所(Suo)以(Yi)厂(Chang)家(Jia)在(Zai)购(Gou)买(Mai)时(Shi)一(Yi)定(Ding)要(Yao)了(Liao)解(Jie)其(Qi)工(Gong)作(Zuo)原(Yuan)理(Li)。(?)

　(?)　(?)1 基(Ji)本(Ben)构(Gou)造(Zao)及(Ji)工(Gong)作(Zuo)原(Yuan)理(Li)

　(?)　(?)1.1 结(Jie)构(Gou)原(Yuan)理(Li)

　(?)　(?)防(Fang)爆(Bao)真(Zhen)空(Kong)干(Gan)燥(Zao)箱(Xiang)外(Wai)壳(Ke)由(You)钢(Gang)板(Ban)冲(Chong)压(Ya)折(Zhe)制(Zhi)、(?)焊(Han)接(Jie)成(Cheng)型(Xing)，(?)外(Wai)壳(Ke)表(Biao)面(Mian)采(Cai)用(Yong)高(Gao)强(Qiang)度(Du)的(De)静(Jing)电(Dian)喷(Pen)塑(Su)涂(Tu)装(Zhuang)处(Chu)理(Li)，(?)漆(Qi)膜(Mo)光(Guang)滑(Hua)牢(Lao)固(Gu)。(?)工(Gong)作(Zuo)室(Shi)采(Cai)用(Yong)碳(Tan)钢(Gang)板(Ban)或(Huo)不(Bu)锈(Xiu)钢(Gang)板(Ban)折(Zhe)制(Zhi)焊(Han)接(Jie)而(?)成(Cheng)，(?)工(Gong)作(Zuo)室(Shi)与(Yu)外(Wai)壳(Ke)之(Zhi)间(Jian)填(Tian)充(Chong)保(Bao)温(Wen)棉(Mian)。(?)

　(?)　(?)工(Gong)作(Zuo)室(Shi)的(De)内(Nei)部(Bu)放(Fang)有(You)试(Shi)品(Pin)搁(Ge)板(Ban)，(?)用(Yong)来(Lai)放(Fang)置(Zhi)各(Ge)种(Zhong)试(Shi)验(Yan)物(Wu)品(Pin)，(?)工(Gong)作(Zuo)室(Shi)内(Nei)每(Mei)层(Ceng)隔(Ge)板(Ban)独(Du)立(Li)加(Jia)热(Re)。(?)门(Men)封(Feng)条(Tiao)采(Cai)用(Yong)硅(Gui)橡(Xiang)胶(Jiao)条(Tiao)密(Mi)封(Feng)。(?)防(Fang)爆(Bao)真(Zhen)空(Kong)干(Gan)燥(Zao)箱(Xiang)的(De)抽(Chou)空(Kong)与(Yu)充(Chong)气(Qi)均(Jun)由(You)电(Dian)磁(Ci)阀(Fa)控(Kong)制(Zhi)，(?)电(Dian)器(Qi)箱(Xiang)在(Zai)箱(Xiang)体(Ti)的(De)左(Zuo)侧(Ce)或(Huo)下(Xia)部(Bu)，(?)电(Dian)器(Qi)箱(Xiang)的(De)前(Qian)面(Mian)板(Ban)上(Shang)装(Zhuang)有(You)真(Zhen)空(Kong)表(Biao)、(?)温(Wen)控(Kong)仪(Yi)表(Biao)及(Ji)控(Kong)制(Zhi)开(Kai)关(Guan)等(Deng),隔(Ge)爆(Bao)箱(Xiang)内(Nei)装(Zhuang)有(You)电(Dian)器(Qi)元(Yuan)件(Jian)：(?)空(Kong)开(Kai)、(?)交(Jiao)流(Liu)接(Jie)触(Chu)器(Qi)等(Deng)。(?)

　(?)　(?)1.2 工(Gong)作(Zuo)原(Yuan)理(Li)

　(?)　(?)防(Fang)爆(Bao)真(Zhen)空(Kong)干(Gan)燥(Zao)箱(Xiang)可(Ke)使(Shi)工(Gong)作(Zuo)室(Shi)内(Nei)保(Bao)持(Chi)一(Yi)定(Ding)的(De)真(Zhen)空(Kong)度(Du)并(Bing)采(Cai)用(Yong)智(Zhi)能(Neng)型(Xing)数(Shu)字(Zi)温(Wen)度(Du)调(Diao)节(Jie)仪(Yi)进(Jin)行(Xing)温(Wen)度(Du)的(De)设(She)定(Ding)、(?)显(Xian)示(Shi)与(Yu)控(Kong)制(Zhi)。(?)

　(?)　(?)下(Xia)图(Tu)为(Wei)BGX-2080型(Xing)防(Fang)爆(Bao)真(Zhen)空(Kong)干(Gan)燥(Zao)箱(Xiang)的(De)电(Dian)路(Lu)原(Yuan)理(Li)图(Tu)如(Ru)图(Tu)，(?)箱(Xiang)体(Ti)的(De)温(Wen)度(Du)控(Kong)制(Zhi)采(Cai)用(Yong)了(Liao)智(Zhi)能(Neng)电(Dian)脑(Nao)温(Wen)控(Kong)，(?)温(Wen)度(Du)信(Xin)号(Hao)的(De)采(Cai)集(Ji)用(Yong)铂(Bo)电(Dian)阻(Zu)，(?)经(Jing)温(Wen)度(Du)控(Kong)制(Zhi)器(Qi)的(De)放(Fang)大(Da)与(Yu)设(She)定(Ding)值(Zhi)进(Jin)行(Xing)比(Bi)较(Jiao)得(De)到(Dao)PID控(Kong)制(Zhi)信(Xin)号(Hao)，(?)控(Kong)制(Zhi)信(Xin)号(Hao)将(Jiang)控(Kong)制(Zhi)可(Ke)控(Kong)硅(Gui)的(De)通(Tong)断(Duan)，(?)可(Ke)控(Kong)硅(Gui)再(Zai)控(Kong)制(Zhi)加(Jia)热(Re)器(Qi)加(Jia)热(Re)状(Zhuang)态(Tai)，(?)达(Da)到(Dao)自(Zi)动(Dong)控(Kong)温(Wen)的(De)目(Mu)的(De)。(?)

（(?)防(Fang)爆(Bao)回(Hui)路(Lu)外(Wai)加(Jia)）(?)

　(?)　(?)在(Zai)设(She)备(Bei)工(Gong)作(Zuo)过(Guo)程(Cheng)中(Zhong)如(Ru)果(Guo)工(Gong)作(Zuo)室(Shi)内(Nei)的(De)温(Wen)度(Du)超(Chao)过(Guo)设(She)定(Ding)温(Wen)度(Du)值(Zhi)时(Shi)，(?)超(Chao)温(Wen)保(Bao)护(Hu)动(Dong)作(Zuo)，(?)切(Qie)断(Duan)加(Jia)热(Re)回(Hui)路(Lu)。(?)