電磁(ci)加熱器的全橋(qiao)(qiao)和半(ban)橋(qiao)(qiao)的穩(wen)定(ding)性(xing)的異(yi)同(tong)：

、相(xiang)同：在技(ji)術設計處理完善的情況下(xia)，均可達到較(jiao)理想的運作穩定性。

二(er)、元(yuan)件損耗上不同：

1、全(quan)橋(qiao)：各元件負擔(dan)較(jiao)合(he)理，損(sun)耗比較(jiao)小，壽命較(jiao)長。

2、半(ban)橋：各元件負擔較重，損(sun)耗比相(xiang)對較大，壽命相(xiang)對合理。

三、故障率上：

1、全(quan)橋：保(bao)護電(dian)路設計較復(fu)雜，周全(quan)，維修(xiu)率較低(di)。

2、半橋：保護電路設計較(jiao)簡化，維修率(小元件)相(xiang)對(dui)較(jiao)高(gao)。

電磁加(jia)(jia)(jia)(jia)熱(re)(re)線(xian)(xian)圈(quan)(quan)(quan)(quan)繞法(fa)：電磁加(jia)(jia)(jia)(jia)熱(re)(re)線(xian)(xian)圈(quan)(quan)(quan)(quan)根據(ju)加(jia)(jia)(jia)(jia)熱(re)(re)體的(de)形狀、大(da)(da)小(xiao)而異，纏繞線(xian)(xian)圈(quan)(quan)(quan)(quan)的(de)用線(xian)(xian)長(chang)度(du)及(ji)電感(gan)量(liang)(liang)會有點(dian)差(cha)別。電磁感(gan)應(ying)加(jia)(jia)(jia)(jia)熱(re)(re)器每(mei)(mei)個(ge)功(gong)率用線(xian)(xian)的(de)線(xian)(xian)徑(jing)(jing)大(da)(da)小(xiao)般(ban)都(dou)是固定的(de)，線(xian)(xian)長(chang)也是基本固定的(de)（加(jia)(jia)(jia)(jia)熱(re)(re)體過大(da)(da)線(xian)(xian)長(chang)會加(jia)(jia)(jia)(jia)長(chang)比(bi)如直徑(jing)(jing)100MM和直徑(jing)(jing)1000MM用同(tong)樣的(de)線(xian)(xian)長(chang)直徑(jing)(jing)小(xiao)的(de)加(jia)(jia)(jia)(jia)熱(re)(re)體繞的(de)圈(quan)(quan)(quan)(quan)數多，繞在直徑(jing)(jing)大(da)(da)的(de)加(jia)(jia)(jia)(jia)熱(re)(re)體上圈(quan)(quan)(quan)(quan)數就(jiu)是會少圈(quan)(quan)(quan)(quan)數少電感(gan)量(liang)(liang)就(jiu)會小(xiao)，這個(ge)時(shi)候(hou)就(jiu)應(ying)該適當增加(jia)(jia)(jia)(jia)用線(xian)(xian)長(chang)度(du)，具體增加(jia)(jia)(jia)(jia)多少在沒有經驗的(de)情況下要測實際的(de)電感(gan)量(liang)(liang)確定），纏繞線(xian)(xian)圈(quan)(quan)(quan)(quan)的(de)時(shi)候(hou)每(mei)(mei)圈(quan)(quan)(quan)(quan)之(zhi)間的(de)間隔距離根據(ju)加(jia)(jia)(jia)(jia)熱(re)(re)溫區大(da)(da)小(xiao)長(chang)度(du)及(ji)線(xian)(xian)長(chang)而定，可(ke)以(yi)圈(quan)(quan)(quan)(quan)圈(quan)(quan)(quan)(quan)緊密(mi)繞，也可(ke)以(yi)緊密(mi)繞幾(ji)圈(quan)(quan)(quan)(quan)間隔幾(ji)公分再(zai)緊密(mi)繞幾(ji)圈(quan)(quan)(quan)(quan)，也可(ke)以(yi)每(mei)(mei)圈(quan)(quan)(quan)(quan)與每(mei)(mei)圈(quan)(quan)(quan)(quan)之(zhi)間都(dou)間隔點(dian)距離繞。如果加(jia)(jia)(jia)(jia)熱(re)(re)體尺寸有點(dian)小(xiao)還可(ke)以(yi)把線(xian)(xian)圈(quan)(quan)(quan)(quan)繞成雙層(ceng)或三層(ceng)。

電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)加(jia)(jia)(jia)熱(re)(re)器(qi)(qi)(qi)工作(zuo)原(yuan)理：電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)加(jia)(jia)(jia)熱(re)(re)是(shi)利用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)感應原(yuan)理將(jiang)(jiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)能(neng)轉(zhuan)換(huan)(huan)為(wei)熱(re)(re)能(neng)的(de)(de)能(neng)量轉(zhuan)換(huan)(huan)過(guo)程(cheng)，由整(zheng)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)將(jiang)(jiang)50/60Hz的(de)(de)交(jiao)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓轉(zhuan)變(bian)(bian)(bian)成(cheng)直(zhi)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓，再經過(guo)功(gong)率(lv)(lv)控(kong)(kong)制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)將(jiang)(jiang)直(zhi)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓轉(zhuan)換(huan)(huan)成(cheng)頻(pin)(pin)(pin)率(lv)(lv)為(wei)20～40kHz的(de)(de)高(gao)頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓，當(dang)高(gao)速(su)變(bian)(bian)(bian)化的(de)(de)交(jiao)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)通(tong)過(guo)線(xian)圈時(shi)，線(xian)圈會(hui)產(chan)(chan)生(sheng)高(gao)速(su)變(bian)(bian)(bian)化的(de)(de)磁(ci)場，磁(ci)場內的(de)(de)交(jiao)變(bian)(bian)(bian)磁(ci)力線(xian)通(tong)過(guo)金屬管道時(shi)（導磁(ci)、導電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)材料），管壁體內產(chan)(chan)生(sheng)無數的(de)(de)小渦流(liu)(liu)(liu)(liu)(liu)，使(shi)輸油(you)管道的(de)(de)管壁本身自(zi)行(xing)(xing)發熱(re)(re)與原(yuan)油(you)進行(xing)(xing)熱(re)(re)交(jiao)換(huan)(huan)，達到加(jia)(jia)(jia)熱(re)(re)原(yuan)油(you)的(de)(de)目的(de)(de)。變(bian)(bian)(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)是(shi)高(gao)頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)加(jia)(jia)(jia)熱(re)(re)器(qi)(qi)(qi)的(de)(de)核心(xin)部(bu)件，是(shi)利用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力半導體器(qi)(qi)(qi)件的(de)(de)通(tong)斷作(zuo)用(yong)將(jiang)(jiang)工頻(pin)(pin)(pin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)變(bian)(bian)(bian)換(huan)(huan)為(wei)另頻(pin)(pin)(pin)率(lv)(lv)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)能(neng)控(kong)(kong)制(zhi)裝(zhuang)置。目前使(shi)用(yong)的(de)(de)變(bian)(bian)(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)主要采用(yong)交(jiao)流(liu)(liu)(liu)(liu)(liu)—直(zhi)流(liu)(liu)(liu)(liu)(liu)—交(jiao)流(liu)(liu)(liu)(liu)(liu)方式(shi)，先(xian)把工頻(pin)(pin)(pin)交(jiao)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)通(tong)過(guo)整(zheng)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)轉(zhuan)換(huan)(huan)成(cheng)直(zhi)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)，然后(hou)再把直(zhi)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)轉(zhuan)換(huan)(huan)成(cheng)頻(pin)(pin)(pin)率(lv)(lv)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓均可控(kong)(kong)制(zhi)的(de)(de)交(jiao)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)供給電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動機。變(bian)(bian)(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)般(ban)由整(zheng)流(liu)(liu)(liu)(liu)(liu)、中(zhong)間直(zhi)流(liu)(liu)(liu)(liu)(liu)環節、逆(ni)變(bian)(bian)(bian)和控(kong)(kong)制(zhi)4個(ge)部(bu)分(fen)組成(cheng)。整(zheng)流(liu)(liu)(liu)(liu)(liu)部(bu)分(fen)為(wei)三相(xiang)橋式(shi)不可控(kong)(kong)整(zheng)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)，逆(ni)變(bian)(bian)(bian)部(bu)分(fen)為(wei)IGBT三相(xiang)橋式(shi)逆(ni)變(bian)(bian)(bian)器(qi)(qi)(qi)且輸出為(wei)PWM波(bo)形，中(zhong)間直(zhi)流(liu)(liu)(liu)(liu)(liu)環節為(wei)濾(lv)波(bo)、直(zhi)流(liu)(liu)(liu)(liu)(liu)儲能(neng)和緩沖無功(gong)功(gong)率(lv)(lv)。

電(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)加熱(re)(re)(re)器是(shi)種(zhong)怎樣的(de)(de)(de)裝置：電(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)加熱(re)(re)(re)器是(shi)種(zhong)利用電(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)感(gan)應(ying)原理將(jiang)電(dian)(dian)(dian)能(neng)轉換為熱(re)(re)(re)能(neng)的(de)(de)(de)裝置。在電(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)加熱(re)(re)(re)器內部(bu)(bu)，由(you)整流(liu)(liu)電(dian)(dian)(dian)路將(jiang)50/60Hz的(de)(de)(de)交(jiao)流(liu)(liu)電(dian)(dian)(dian)壓(ya)變成直(zhi)(zhi)流(liu)(liu)電(dian)(dian)(dian)壓(ya)，再經過控(kong)制電(dian)(dian)(dian)路將(jiang)直(zhi)(zhi)流(liu)(liu)電(dian)(dian)(dian)壓(ya)轉換成頻(pin)率為15-20KHz的(de)(de)(de)高頻(pin)電(dian)(dian)(dian)壓(ya)，高速變化(hua)的(de)(de)(de)電(dian)(dian)(dian)流(liu)(liu)流(liu)(liu)過線圈會產生高速變化(hua)的(de)(de)(de)磁(ci)(ci)(ci)(ci)場，當(dang)磁(ci)(ci)(ci)(ci)場內的(de)(de)(de)磁(ci)(ci)(ci)(ci)力線通過金屬(shu)器皿(導磁(ci)(ci)(ci)(ci)又(you)導電(dian)(dian)(dian)材料)底(di)部(bu)(bu)金屬(shu)體內產生無數的(de)(de)(de)小渦(wo)流(liu)(liu)，使器皿本身(shen)自行高速發熱(re)(re)(re)，然后再加熱(re)(re)(re)器皿內的(de)(de)(de)東西。而電(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)加熱(re)(re)(re)本身(shen)對器皿和(he)器皿內的(de)(de)(de)物(wu)品的(de)(de)(de)物(wu)理性質和(he)化(hua)學性質不產生任何(he)改變。

電(dian)磁加熱(re)器(qi)區別：

、家用電(dian)磁(ci)(ci)爐(lu)(lu)功率(lv)相(xiang)對較小，且(qie)是(shi)(shi)220V交流轉變成直流，實(shi)現方法簡(jian)單，家用電(dian)磁(ci)(ci)爐(lu)(lu)功率(lv)般在2200瓦以內(nei)（實(shi)際功率(lv)1900瓦以內(nei)），家用電(dian)磁(ci)(ci)爐(lu)(lu)要(yao)求保證每(mei)天工(gong)(gong)作(zuo)(zuo)2-3小時。而電(dian)磁(ci)(ci)加熱器(qi)則是(shi)(shi)應用在工(gong)(gong)業設備上，并且(qie)功率(lv)達到(dao)了60KW，選(xuan)材和(he)控制模(mo)式與家用電(dian)磁(ci)(ci)爐(lu)(lu)是(shi)(shi)完全不(bu)同(tong)的。電(dian)磁(ci)(ci)加熱器(qi)是(shi)(shi)屬于商用工(gong)(gong)業產(chan)品。具備家用電(dian)磁(ci)(ci)爐(lu)(lu)無法比擬的穩定性和(he)耐用性。正常使用，可連續工(gong)(gong)作(zuo)(zuo)10年（10萬小時）以上。

二、電(dian)磁(ci)(ci)加(jia)熱(re)(re)器和(he)家用(yong)電(dian)磁(ci)(ci)爐(lu)(lu)區(qu)別之家用(yong)電(dian)磁(ci)(ci)爐(lu)(lu)是為了滿(man)足居家生活(huo)而(er)設計開發的(de)，而(er)電(dian)磁(ci)(ci)加(jia)熱(re)(re)器是為了解決塑(su)料加(jia)熱(re)(re)的(de)問題而(er)設計開發。

如(ru)何選(xuan)擇合適功(gong)率的電磁感應(ying)加(jia)熱器？

1、被加熱的(de)(de)工件形狀(zhuang)和尺寸：工件大、棒(bang)料、實材(cai)，應選用相對功率大，頻率低的(de)(de)感(gan)應加熱設備；工件小、管(guan)材(cai)、板材(cai)、齒(chi)輪等，則選用相對功率小，頻率高(gao)的(de)(de)電磁感(gan)應加熱器。

2、需要加熱(re)的(de)深度和面積：加熱(re)深度深，面積大(da)(da)，整(zheng)體加熱(re)，應選(xuan)用功率大(da)(da)，頻率低(di)的(de)感應加熱(re)設(she)備；加熱(re)深度淺，面積小(xiao)，局部加熱(re)，選(xuan)用相對功率小(xiao)，頻率高的(de)電磁感應加熱(re)設(she)備。

3、所需的(de)加熱(re)速(su)度(du)：需要(yao)的(de)加熱(re)速(su)度(du)快，應選用功率(lv)相對較大，頻率(lv)相對較高的(de)感應加熱(re)設備。

4、工(gong)藝(yi)要(yao)求：般來說，淬火、焊(han)接等(deng)工(gong)藝(yi)，相(xiang)對可以功(gong)(gong)率(lv)選(xuan)(xuan)小(xiao)些，頻(pin)(pin)率(lv)選(xuan)(xuan)高(gao)些；退火、回火等(deng)工(gong)藝(yi)，相(xiang)對功(gong)(gong)率(lv)選(xuan)(xuan)大些，頻(pin)(pin)率(lv)選(xuan)(xuan)低(di)些；紅(hong)沖、熱殿(dian)、熔(rong)煉等(deng)，需要(yao)透熱效(xiao)果好(hao)的工(gong)藝(yi)，則電磁加(jia)熱器功(gong)(gong)率(lv)應選(xuan)(xuan)得(de)(de)更(geng)大，頻(pin)(pin)率(lv)選(xuan)(xuan)得(de)(de)更(geng)低(di)。

電磁加熱器線(xian)(xian)(xian)圈選型原則：線(xian)(xian)(xian)材(cai)本身：線(xian)(xian)(xian)材(cai)本身有很多(duo)種類(lei)(lei)，例如高頻線(xian)(xian)(xian)、云母線(xian)(xian)(xian)、防(fang)水線(xian)(xian)(xian)、硅膠線(xian)(xian)(xian)、鍍鎳(nie)線(xian)(xian)(xian)、純鎳(nie)線(xian)(xian)(xian)、銅管、合(he)金導線(xian)(xian)(xian)等(deng)，不(bu)同種類(lei)(lei)的(de)線(xian)(xian)(xian)材(cai)適(shi)用場(chang)合(he)不(bu)同，選購前(qian)應仔細問(wen)詢。

電磁(ci)加熱器用于(yu)油氣管道應用的特點(dian)：

1、熱(re)效高：節能電磁(ci)加(jia)熱(re)器(qi)不需要(yao)預熱(re)管道。

2、不破(po)壞管(guan)道(dao)保溫(wen)層(ceng)：由(you)于是(shi)感應節能電磁加熱(re)，磁力(li)線能穿透保溫(wen)層(ceng)，改(gai)造管(guan)單(dan)。

3、安全性(xing)高：無明火，無熱輻(fu)射，溫度可(ke)控(kong)。

4、操(cao)作方便：在(zai)管道上纏上電(dian)磁線圈，做好溫度控(kong)溫探頭，調(diao)節(jie)控(kong)溫系(xi)統，開機調(diao)節(jie)即可自控(kong)加熱恒溫。