電磁(ci)感(gan)應(ying)加熱器控制(zhi)溫度場的(de)分布的(de)原理及方法如下(xia)：

1、原理：導體處于(yu)交(jiao)(jiao)變(bian)電流中時，交(jiao)(jiao)變(bian)電流使(shi)導體周圍產生交(jiao)(jiao)變(bian)磁場，從(cong)而引起集(ji)膚(fu)(fu)效(xiao)應使(shi)導體在短時間內(nei)迅速被加熱，交(jiao)(jiao)變(bian)電流的頻率越(yue)高，集(ji)膚(fu)(fu)效(xiao)應越(yue)嚴重。

2、電流(liu)透入深度對感應加(jia)熱的影響：把金(jin)(jin)屬(shu)(shu)圓(yuan)柱體放在(zai)通有交流(liu)電的線圈中(zhong)，盡管金(jin)(jin)屬(shu)(shu)圓(yuan)柱不與線圈接(jie)觸，線圈本身的溫(wen)度也很低(di)，但是圓(yuan)柱表(biao)面(mian)卻會(hui)被(bei)加(jia)熱到(dao)發(fa)紅，甚至熔化(hua)，這(zhe)是由于電磁感應作用，在(zai)金(jin)(jin)屬(shu)(shu)柱中(zhong)感生(sheng)與線圈電流(liu)方向(xiang)相反的渦流(liu),在(zai)渦流(liu)的焦耳熱作用下(xia)，金(jin)(jin)屬(shu)(shu)自身發(fa)熱升(sheng)溫(wen)所引起的。金(jin)(jin)屬(shu)(shu)圓(yuan)柱中(zhong)的感生(sheng)電流(liu)的分布在(zai)表(biao)面(mian)強(qiang)，在(zai)徑向(xiang)從外到(dao)里按指數函數方式減(jian)小。這(zhe)種電流(liu)不均勻分布的現(xian)象(xiang)，隨(sui)電流(liu)頻率(lv)升(sheng)高而趨顯著。

電(dian)(dian)磁(ci)感應加(jia)(jia)(jia)(jia)熱(re)(re)(re)器與電(dian)(dian)磁(ci)加(jia)(jia)(jia)(jia)熱(re)(re)(re)器的(de)區別？簡單的(de)說，他們(men)實(shi)質(zhi)(zhi)上沒什么區別，都是(shi)(shi)電(dian)(dian)磁(ci)線(xian)圈(quan)發熱(re)(re)(re)盤而(er)(er)已(yi)，并且加(jia)(jia)(jia)(jia)熱(re)(re)(re)的(de)物(wu)質(zhi)(zhi)是(shi)(shi)有含鐵(tie)的(de)物(wu)質(zhi)(zhi)。但是(shi)(shi)電(dian)(dian)磁(ci)感應加(jia)(jia)(jia)(jia)熱(re)(re)(re)器的(de)加(jia)(jia)(jia)(jia)熱(re)(re)(re)原(yuan)理(li)是(shi)(shi)感應加(jia)(jia)(jia)(jia)熱(re)(re)(re)電(dian)(dian)源產生的(de)交變電(dian)(dian)流通過(guo)線(xian)圈(quan)而(er)(er)產生磁(ci)場，原(yuan)子相互碰(peng)撞、摩擦而(er)(er)產生熱(re)(re)(re)能(neng)而(er)(er)電(dian)(dian)磁(ci)加(jia)(jia)(jia)(jia)熱(re)(re)(re)器則是(shi)(shi)利用電(dian)(dian)磁(ci)感應加(jia)(jia)(jia)(jia)熱(re)(re)(re)器的(de)原(yuan)理(li)將電(dian)(dian)能(neng)轉(zhuan)換(huan)為(wei)熱(re)(re)(re)能(neng)，將交流電(dian)(dian)壓轉(zhuan)換(huan)成直(zhi)流電(dian)(dian)壓，再經過(guo)控制電(dian)(dian)路將直(zhi)流電(dian)(dian)壓轉(zhuan)換(huan)為(wei)高頻(pin)電(dian)(dian)壓等系列轉(zhuan)換(huan)轉(zhuan)成磁(ci)場而(er)(er)加(jia)(jia)(jia)(jia)熱(re)(re)(re)的(de)方式(shi)。由于加(jia)(jia)(jia)(jia)熱(re)(re)(re)方式(shi)不樣，因此，操(cao)作(zuo)的(de)方式(shi)也是(shi)(shi)不樣的(de)。節(jie)能(neng)的(de)效果(guo)電(dian)(dian)磁(ci)感應加(jia)(jia)(jia)(jia)熱(re)(re)(re)器會更好。

此外，挑選(xuan)(xuan)線(xian)圈(quan)(quan)(quan)(quan)時(shi)，還(huan)要(yao)考慮(lv)其(qi)線(xian)徑，材質(zhi)，耐(nai)(nai)(nai)溫(wen)(wen)耐(nai)(nai)(nai)壓性能(neng)等(deng)。這(zhe)(zhe)些也(ye)都(dou)(dou)是(shi)(shi)(shi)(shi)由(you)其(qi)使(shi)(shi)用(yong)(yong)(yong)條件決定的(de)(de)(de)。在(zai)實際(ji)選(xuan)(xuan)配過(guo)程中(zhong)(zhong)，先要(yao)根(gen)據加(jia)熱需求確定所需設備(bei)(bei)功(gong)(gong)率(lv)，然(ran)后就(jiu)可以知道其(qi)輸出電(dian)流值，進而確定線(xian)徑、材質(zhi)，然(ran)后視現(xian)(xian)場(chang)(chang)(chang)的(de)(de)(de)溫(wen)(wen)度(du)情況，散(san)熱情況等(deng)考慮(lv)其(qi)耐(nai)(nai)(nai)溫(wen)(wen)性能(neng)。如果(guo)挑選(xuan)(xuan)線(xian)圈(quan)(quan)(quan)(quan)時(shi)沒有(you)考慮(lv)到這(zhe)(zhe)些因(yin)(yin)素，就(jiu)很(hen)(hen)容(rong)易出現(xian)(xian)設備(bei)(bei)故障，例如線(xian)圈(quan)(quan)(quan)(quan)被燒壞，加(jia)熱效(xiao)率(lv)低(di)下，線(xian)圈(quan)(quan)(quan)(quan)不耐(nai)(nai)(nai)用(yong)(yong)(yong)等(deng)問題。輕則影響生(sheng)產，重則造成人身(shen)事故。二線(xian)圈(quan)(quan)(quan)(quan)繞(rao)(rao)(rao)制(zhi)：表(biao)面看來(lai)，線(xian)圈(quan)(quan)(quan)(quan)繞(rao)(rao)(rao)制(zhi)這(zhe)(zhe)工作似乎是(shi)(shi)(shi)(shi)沒技術含量(liang)(liang)(liang)(liang)(liang)的(de)(de)(de)，不就(jiu)是(shi)(shi)(shi)(shi)把線(xian)材繞(rao)(rao)(rao)下組成個線(xian)圈(quan)(quan)(quan)(quan)嘛，這(zhe)(zhe)誰不會(hui)？但(dan)實際(ji)上(shang)并沒有(you)那么(me)簡(jian)單，線(xian)圈(quan)(quan)(quan)(quan)的(de)(de)(de)繞(rao)(rao)(rao)制(zhi)需要(yao)考慮(lv)到疊加(jia)、干擾、散(san)熱、距(ju)離、感量(liang)(liang)(liang)(liang)(liang)匹(pi)配等(deng)因(yin)(yin)素。不同功(gong)(gong)率(lv)的(de)(de)(de)電(dian)磁(ci)加(jia)熱器(qi)其(qi)所需要(yao)的(de)(de)(de)線(xian)圈(quan)(quan)(quan)(quan)電(dian)感量(liang)(liang)(liang)(liang)(liang)是(shi)(shi)(shi)(shi)不樣的(de)(de)(de)，只(zhi)有(you)實際(ji)電(dian)感量(liang)(liang)(liang)(liang)(liang)和理論(lun)值直，才能(neng)保證(zheng)電(dian)磁(ci)加(jia)熱器(qi)的(de)(de)(de)功(gong)(gong)率(lv)大化。例如，臺30KW的(de)(de)(de)電(dian)磁(ci)加(jia)熱器(qi)，其(qi)理論(lun)電(dian)感量(liang)(liang)(liang)(liang)(liang)是(shi)(shi)(shi)(shi)240μH，線(xian)圈(quan)(quan)(quan)(quan)繞(rao)(rao)(rao)制(zhi)時(shi)，只(zhi)有(you)實際(ji)感量(liang)(liang)(liang)(liang)(liang)為(wei)240μH，其(qi)功(gong)(gong)率(lv)才有(you)可能(neng)完全(quan)達到。如果(guo)實際(ji)感量(liang)(liang)(liang)(liang)(liang)是(shi)(shi)(shi)(shi)100μH、150μH、300μH、400μH，那其(qi)這(zhe)(zhe)臺設備(bei)(bei)的(de)(de)(de)實際(ji)使(shi)(shi)用(yong)(yong)(yong)功(gong)(gong)率(lv)可能(neng)就(jiu)只(zhi)有(you)20KW，15KW，甚至根(gen)本啟動(dong)不了。三(san)適用(yong)(yong)(yong)見場(chang)(chang)(chang)：電(dian)磁(ci)加(jia)熱器(qi)的(de)(de)(de)廣泛(fan)應(ying)用(yong)(yong)(yong)性決定了其(qi)現(xian)(xian)場(chang)(chang)(chang)使(shi)(shi)用(yong)(yong)(yong)情況的(de)(de)(de)復(fu)雜。在(zai)電(dian)磁(ci)加(jia)熱器(qi)眾多(duo)的(de)(de)(de)使(shi)(shi)用(yong)(yong)(yong)域中(zhong)(zhong)，食品(pin)、塑料(liao)、化工、印刷(shua)、供暖、垃圾處理，每個行業的(de)(de)(de)應(ying)用(yong)(yong)(yong)場(chang)(chang)(chang)景都(dou)(dou)不同，就(jiu)是(shi)(shi)(shi)(shi)同個行業中(zhong)(zhong)，每個客戶的(de)(de)(de)使(shi)(shi)用(yong)(yong)(yong)現(xian)(xian)場(chang)(chang)(chang)也(ye)有(you)很(hen)(hen)大的(de)(de)(de)差別。所以，電(dian)磁(ci)線(xian)圈(quan)(quan)(quan)(quan)不具有(you)普遍適用(yong)(yong)(yong)性，是(shi)(shi)(shi)(shi)種不同使(shi)(shi)用(yong)(yong)(yong)場(chang)(chang)(chang)景有(you)不同繞(rao)(rao)(rao)法(fa)的(de)(de)(de)非標配件。

電磁加熱控(kong)制(zhi)器運用(yong)在反應釜上有什么優勢呢？

、加(jia)熱(re)(re)升溫(wen)時間(jian)短、能量轉換效率高(gao)，該(gai)設備采用就地電(dian)磁加(jia)熱(re)(re)，直接加(jia)熱(re)(re)罐體，減少中間(jian)熱(re)(re)傳遞過程提高(gao)熱(re)(re)效率利用。

二、安裝方便，次性投入(ru)(ru)成本低，只在(zai)原反(fan)應(ying)釜加入(ru)(ru)電磁感(gan)應(ying)器即可，不對原反(fan)應(ying)釜進(jin)行大量的改造。

三(san)、運(yun)行成本低(di)，無(wu)需管道、鍋(guo)爐、煤場、智能監控，真正實現無(wu)人(ren)值守。

四、軟啟(qi)動：無(wu)啟(qi)動沖擊電(dian)流，可以有效保護設(she)備不受(shou)傷害。

五、安(an)全防爆、無明火。線圈溫(wen)度在100度以內，加(jia)(jia)熱部分采(cai)用電纜室結構，加(jia)(jia)熱電纜本身不會產生熱量(liang)。

六、升溫速度快，溫度高，高可達600度加熱時，加熱介質與電(dian)分離，感應器本身不(bu)產生高溫，不(bu)產生火花，電(dian)源采用特殊的防爆(bao)外殼。

七、綠(lv)色環保，無任何廢(fei)棄物產生，符合可(ke)持續(xu)發展戰略。

電(dian)(dian)(dian)磁(ci)(ci)加熱(re)(re)(re)(re)(re)(re)(re)器(qi)(qi)(qi)對加熱(re)(re)(re)(re)(re)(re)(re)行業(ye)的(de)(de)(de)作用(yong)(yong)(yong)：當(dang)(dang)今世界(jie)使用(yong)(yong)(yong)加熱(re)(re)(re)(re)(re)(re)(re)的(de)(de)(de)途徑有三種：燃燒加熱(re)(re)(re)(re)(re)(re)(re)、電(dian)(dian)(dian)加熱(re)(re)(re)(re)(re)(re)(re)和(he)其它能(neng)源(yuan)加熱(re)(re)(re)(re)(re)(re)(re)，當(dang)(dang)然(ran)前兩種是(shi)如今主(zhu)要(yao)，也是(shi)常用(yong)(yong)(yong)的(de)(de)(de)物料加熱(re)(re)(re)(re)(re)(re)(re)方(fang)式。但是(shi)電(dian)(dian)(dian)磁(ci)(ci)加熱(re)(re)(re)(re)(re)(re)(re)方(fang)式又比燃燒加熱(re)(re)(re)(re)(re)(re)(re)方(fang)式清潔(jie)衛生(sheng)(sheng)、熱(re)(re)(re)(re)(re)(re)(re)效率高(gao)(gao)(可(ke)達85%-95%)、安全(quan)、可(ke)調節、系統簡便等優點。電(dian)(dian)(dian)磁(ci)(ci)加熱(re)(re)(re)(re)(re)(re)(re)器(qi)(qi)(qi)應(ying)用(yong)(yong)(yong)域(yu)(yu)(yu)廣泛，大(da)(da)致可(ke)以分為民(min)用(yong)(yong)(yong)和(he)工(gong)業(ye)用(yong)(yong)(yong)兩種應(ying)用(yong)(yong)(yong)域(yu)(yu)(yu)。民(min)用(yong)(yong)(yong)域(yu)(yu)(yu)主(zhu)要(yao)包括(kuo)空調、洗衣(yi)機、熱(re)(re)(re)(re)(re)(re)(re)水(shui)器(qi)(qi)(qi)等大(da)(da)家電(dian)(dian)(dian)及豆漿機、飲水(shui)機等小家電(dian)(dian)(dian)，應(ying)用(yong)(yong)(yong)于(yu)民(min)用(yong)(yong)(yong)域(yu)(yu)(yu)的(de)(de)(de)電(dian)(dian)(dian)磁(ci)(ci)加熱(re)(re)(re)(re)(re)(re)(re)器(qi)(qi)(qi)往(wang)往(wang)是(shi)標(biao)準(zhun)件，單(dan)(dan)位價值相對較(jiao)低但批量較(jiao)大(da)(da);工(gong)業(ye)用(yong)(yong)(yong)域(yu)(yu)(yu)主(zhu)要(yao)包括(kuo)多晶硅生(sheng)(sheng)產、石油天然(ran)氣(qi)開采、石化化工(gong)等域(yu)(yu)(yu)，應(ying)用(yong)(yong)(yong)于(yu)工(gong)業(ye)域(yu)(yu)(yu)的(de)(de)(de)電(dian)(dian)(dian)磁(ci)(ci)加熱(re)(re)(re)(re)(re)(re)(re)器(qi)(qi)(qi)往(wang)往(wang)是(shi)工(gong)業(ye)生(sheng)(sheng)產系統的(de)(de)(de)部分，是(shi)非標(biao)準(zhun)件，對性能(neng)要(yao)求高(gao)(gao)，單(dan)(dan)位價值和(he)利潤(run)相對較(jiao)高(gao)(gao)。電(dian)(dian)(dian)加熱(re)(re)(re)(re)(re)(re)(re)有使用(yong)(yong)(yong)電(dian)(dian)(dian)熱(re)(re)(re)(re)(re)(re)(re)絲的(de)(de)(de)和(he)電(dian)(dian)(dian)磁(ci)(ci)加熱(re)(re)(re)(re)(re)(re)(re)器(qi)(qi)(qi)加熱(re)(re)(re)(re)(re)(re)(re)。電(dian)(dian)(dian)熱(re)(re)(re)(re)(re)(re)(re)絲初裝成本低，壽命短，維護麻(ma)煩(fan)，耗電(dian)(dian)(dian)量大(da)(da)。而電(dian)(dian)(dian)磁(ci)(ci)加熱(re)(re)(re)(re)(re)(re)(re)器(qi)(qi)(qi)加熱(re)(re)(re)(re)(re)(re)(re)效率高(gao)(gao)，能(neng)節省大(da)(da)量的(de)(de)(de)電(dian)(dian)(dian)能(neng)，壽命長。

使用電磁加熱器時這幾點不可忽視：

1、電磁(ci)加(jia)熱(re)器主機的安(an)頓環境不(bu)能在-20℃以(yi)下，高也不(bu)能超(chao)過(guo)50℃，且要枯(ku)燥、通(tong)風。

2、接入電(dian)(dian)(dian)(dian)源前：清楚電(dian)(dian)(dian)(dian)器作業需要(yao)的總電(dian)(dian)(dian)(dian)量(liang)和供(gong)電(dian)(dian)(dian)(dian)變壓器的總容(rong)量(liang)，不能(neng)超過供(gong)電(dian)(dian)(dian)(dian)的總容(rong)量(liang)，也盡可能(neng)不要(yao)去(qu)糟(zao)蹋。別的要(yao)辨(bian)明單相(xiang)220v、三(san)相(xiang)380v電(dian)(dian)(dian)(dian)壓，不能(neng)接錯。終要(yao)留(liu)意(yi)的就是，當(dang)電(dian)(dian)(dian)(dian)網(wang)的電(dian)(dian)(dian)(dian)壓在規則電(dian)(dian)(dian)(dian)壓規模的上(shang)下10%起浮(fu)時(shi)，制止運用(yong)大功率(lv)電(dian)(dian)(dian)(dian)磁加熱設(she)備。

3、變頻電(dian)磁(ci)加(jia)(jia)熱器(qi)是怕水的，因而、總(zong)歸(gui)，電(dian)磁(ci)加(jia)(jia)熱器(qi)不能(neng)有水進入，任何狀況下都要防止這(zhe)狀況，水蒸汽(qi)、濕(shi)氣過(guo)重(zhong)也(ye)不可，電(dian)磁(ci)加(jia)(jia)熱線(xian)也(ye)相(xiang)同怕水，切忌用(yong)濕(shi)潤的手(shou)去觸摸或是在電(dian)磁(ci)加(jia)(jia)熱線(xian)上搭曬濕(shi)潤的衣物等等。

4、電(dian)磁(ci)加(jia)熱器生(sheng)產廠家(jia)印刷(shua)電(dian)路板(ban)周圍不能有塑料、乙(yi)烯基和聚苯(ben)乙(yi)烯泡沫塑料(抗靜電(dian)類型在外)，靜電(dian)很可能會損壞這(zhe)些(xie)電(dian)路。不要觸摸(mo)操控接口板(ban)或操控板(ban)的IC電(dian)路。

5、電(dian)(dian)(dian)磁(ci)加(jia)熱(re)線外表是石棉原料，怕(pa)磨，因而電(dian)(dian)(dian)磁(ci)加(jia)熱(re)線應防止轟(hong)動兇猛(meng)的(de)(de)(de)設(she)備，防止磨損的(de)(de)(de)電(dian)(dian)(dian)磁(ci)加(jia)熱(re)線呈現漏電(dian)(dian)(dian)現象，觸摸(mo)接地(di)(di)的(de)(de)(de)金屬(shu)物體，用手觸摸(mo)這些操控器(qi)之前(qian)消除身體上的(de)(de)(de)靜電(dian)(dian)(dian)(封閉操控器(qi)的(de)(de)(de)電(dian)(dian)(dian)源。并且在觸摸(mo)操控器(qi)時堅持接地(di)(di))。

6、任(ren)何替換(huan)設(she)備、檢修(xiu)設(she)備環節(jie)定要斷電今(jin)后(hou)才(cai)干進行，不要用手或導體觸摸印刷電路板(ban)上的元件或導體。

7、任何替換設備、檢修設備環節定要斷電今(jin)后才干(gan)進(jin)行(xing)。

電磁加熱(re)功率(lv)選配：、確認需(xu)要節能(neng)改造的設備(bei)原來的加熱(re)形式：

1、電(dian)爐絲/石(shi)英：確認原(yuan)來加(jia)熱(re)區數(shu)量、每個(ge)溫區的(de)加(jia)熱(re)功(gong)率(lv)，就近(jin)選擇(ze)相應功(gong)率(lv)型號的(de)電(dian)磁加(jia)熱(re)產(chan)品進行(xing)搭(da)配即可(ke)，功(gong)率(lv)如果小于2.5KW則律(lv)選擇(ze)2.5KW電(dian)磁加(jia)熱(re)控制板，搭(da)配產(chan)品的(de)數(shu)量與原(yuan)來加(jia)熱(re)區樣(yang)的(de)數(shu)量即可(ke)，該(gai)方法主要用(yong)于注塑機(ji)、吹(chui)膜機(ji)、拉絲機(ji)、擠出機(ji)等功(gong)率(lv)較(jiao)小的(de)設備。

2、燒(shao)煤/柴(chai)油加(jia)熱：確認料筒直(zhi)徑、需(xu)加(jia)熱區域的(de)(de)長(chang)度(du)、根據(ju)生產(chan)需(xu)要(yao)(yao)(yao)加(jia)熱的(de)(de)溫度(du)、具體的(de)(de)產(chan)量要(yao)(yao)(yao)求(qiu)，該方(fang)法需(xu)要(yao)(yao)(yao)定的(de)(de)專業水平與經驗，客戶(hu)如若(ruo)有需(xu)要(yao)(yao)(yao)可(ke)以(yi)提(ti)供以(yi)上數據(ju)由電磁(ci)加(jia)熱器(qi)的(de)(de)廠家進行鑒定。該方(fang)法主要(yao)(yao)(yao)用于水料造粒機、各種鍋爐(lu)等較(jiao)大功(gong)率的(de)(de)設備(bei)。

二、采(cai)暖(nuan)器：電磁加(jia)熱(re)采(cai)暖(nuan)的功率搭配可(ke)參考日常空調的搭配方法，即15平(ping)方/KW即可(ke)滿(man)足(zu)采(cai)暖(nuan)需求。

三、將放置于(yu)水中加熱(re)(re)的電(dian)(dian)熱(re)(re)棒(bang)改造成同等(deng)功率(lv)的電(dian)(dian)磁感應(ying)加熱(re)(re)器其節電(dian)(dian)效果在10%以(yi)內，不太顯著，但可(ke)以(yi)大大提(ti)高(gao)其安(an)全性及(ji)抗氧(yang)化(hua)能力。

電(dian)(dian)磁(ci)加熱(re)器(qi)(qi)(qi)裝(zhuang)(zhuang)置后(hou)溫度不(bu)達標(biao)處理(li)(li)方法，當為注(zhu)塑機(ji)類似(si)小功率時(shi)(shi)，安裝(zhuang)(zhuang)電(dian)(dian)磁(ci)加熱(re)器(qi)(qi)(qi)后(hou)有(you)些機(ji)器(qi)(qi)(qi)溫度總是(shi)差點(dian)點(dian)。當把功率換原(yuan)來還(huan)大后(hou)還(huan)是(shi)這樣。有(you)時(shi)(shi)總讓人摸(mo)不(bu)著頭腦，大多數(shu)不(bu)是(shi)功率安裝(zhuang)(zhuang)小的原(yuan)因的，這是(shi)由于原(yuan)來機(ji)器(qi)(qi)(qi)中的溫控制器(qi)(qi)(qi)輸出的PID運算方法引起的，啟動(dong)信號很(hen)短，電(dian)(dian)磁(ci)加熱(re)器(qi)(qi)(qi)都還(huan)沒有(you)來得及工(gong)作，又斷(duan)了。所以(yi)(yi)電(dian)(dian)磁(ci)加熱(re)器(qi)(qi)(qi)大多數(shu)時(shi)(shi)間(jian)處理(li)(li)停止狀態，沒有(you)加熱(re)。這時(shi)(shi)我們可(ke)以(yi)(yi)調節機(ji)器(qi)(qi)(qi)中的斷(duan)開延時(shi)(shi)工(gong)作時(shi)(shi)間(jian)，來達到溫度要求。注(zhu)意，不(bu)能調節太大。否則可(ke)能會超溫。