使用造(zao)粒機電磁加熱器時要知道的常(chang)識：

1、我們要把造(zao)粒機電磁加熱(re)器安置在個牢固(gu)的(de)平臺上(shang)或(huo)掛在設備上(shang)，其附近不宜溫度過(guo)高，以防止散熱(re)不好(hao)導致過(guo)熱(re)保護。

2、不要(yao)將(jiang)控(kong)制(zhi)器安裝在潮濕的環境中，防止水蒸汽進入電(dian)箱后(hou)，易在緣介質表面凝結(jie)，降低(di)其緣性能，造成漏電(dian)事故。

3、外部電(dian)源(yuan)在接(jie)入電(dian)磁加(jia)熱器前(qian)，應安裝獨立(li)的(de)電(dian)源(yuan)空(kong)氣開關保護(hu)裝置。并將金屬外殼要(yao)可靠(kao)接(jie)地。在使用(yong)過程(cheng)中，不要(yao)輕(qing)易拆除其(qi)接(jie)地導線，因為接(jie)地措(cuo)施是(shi)防止觸(chu)電(dian)的(de)后(hou)道保護(hu)措(cuo)施。

4、要定期清理散(san)(san)熱(re)器，保證產品(pin)通風良好。要經常檢查產品(pin)的進風口及散(san)(san)熱(re)風扇，防止進風口處(chu)堵(du)塞或散(san)(san)熱(re)風扇卡(ka)死，避免(mian)因(yin)過熱(re)停機(ji)保護。

電磁加熱器的(de)全橋和半橋的(de)工(gong)作原理的(de)同異(yi)：

、相同：均是通過系(xi)列電(dian)路處(chu)理技術將普(pu)通交流(liu)(liu)電(dian)(220V、380V)轉化成高頻直流(liu)(liu)電(dian)流(liu)(liu)，通過做功(gong)線(xian)盤產生(sheng)強烈電(dian)渦(wo)流(liu)(liu)，并與相應專用金屬(shu)材質感應產生(sheng)激烈電(dian)磁場，直接促使相應金屬(shu)材質內部原子速(su)激蕩碰撞，從(cong)而使得(de)相應金屬(shu)材質自身快速(su)發熱產生(sheng)高溫，普(pu)遍用于工(gong)業塑膠機(ji)(ji)械料筒上加熱，如拉(la)絲機(ji)(ji)、吹膜機(ji)(ji)，造粒機(ji)(ji)，注塑機(ji)(ji)，擠出機(ji)(ji)等等!

二、不同對交流電的承(cheng)接轉化處理技(ji)術上：

1、全橋：采用(yong)雙路驅動技術，利用(yong)雙IGBT逆變模塊(kuai)分別承接轉化交(jiao)流電(dian)的上玄波(bo)和下(xia)玄波(bo)電(dian)流，產生的高頻電(dian)流波(bo)形完整、清(qing)晰、穩定。

2、半(ban)橋：采用單路驅動技術，利用單IGBT逆變模塊分(fen)別承接轉化交流電(dian)的上(shang)玄(xuan)波(bo)，結(jie)合(he)相(xiang)應附加電(dian)路配置吸收下玄(xuan)波(bo)電(dian)流進(jin)行放電(dian)補充，產生的高(gao)頻電(dian)流波(bo)形相(xiang)對完整。

三、對相應專用鍋具(ju)的負載(zai)感(gan)應上：

1、全橋：因(yin)電(dian)流轉化技術配(pei)置效率(lv)高，可負載較(jiao)高電(dian)感負荷，電(dian)轉熱(re)效率(lv)相應較(jiao)高。

2、半(ban)橋(qiao)：因(yin)電(dian)(dian)流轉(zhuan)化技術配置(zhi)效率稍低，可負載較(jiao)低電(dian)(dian)感負荷，電(dian)(dian)轉(zhuan)熱效率相(xiang)應較(jiao)低。

電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)器(qi)(qi)(qi)(qi)的(de)(de)耗(hao)電(dian)(dian)(dian)(dian)(dian)(dian)情(qing)況(kuang)是(shi)(shi)(shi)怎樣的(de)(de)？工作(zuo)(zuo)(zuo)原(yuan)理(li)是(shi)(shi)(shi)把220V或者380V交(jiao)流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)，整(zheng)流(liu)(liu)(liu)后(hou)(hou)轉(zhuan)換(huan)成(cheng)直(zhi)流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)，再將直(zhi)流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)進行濾波，利用IGBT或者可控硅再將直(zhi)流(liu)(liu)(liu)變成(cheng)交(jiao)流(liu)(liu)(liu)，在感應(ying)線圈內產(chan)生(sheng)高(gao)頻磁(ci)(ci)(ci)(ci)力線，是(shi)(shi)(shi)感應(ying)線圈內導體(ti)工件表面產(chan)生(sheng)渦流(liu)(liu)(liu)依靠自生(sheng)內阻發熱(re)(re)(re)(re)。電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)器(qi)(qi)(qi)(qi)工作(zuo)(zuo)(zuo)中當溫(wen)度(du)沒達到(dao)(dao)設置的(de)(de)溫(wen)度(du)時(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)器(qi)(qi)(qi)(qi)就(jiu)(jiu)會直(zhi)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)，當達到(dao)(dao)了(le)(le)(le)預設的(de)(de)溫(wen)度(du)以后(hou)(hou)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)器(qi)(qi)(qi)(qi)就(jiu)(jiu)停止加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)了(le)(le)(le)，也(ye)(ye)就(jiu)(jiu)不(bu)(bu)(bu)再耗(hao)電(dian)(dian)(dian)(dian)(dian)(dian)了(le)(le)(le)。電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)器(qi)(qi)(qi)(qi)每個小時(shi)的(de)(de)耗(hao)電(dian)(dian)(dian)(dian)(dian)(dian)量(liang)多少與(yu)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)器(qi)(qi)(qi)(qi)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)的(de)(de)時(shi)間長短有關(guan)。電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)器(qi)(qi)(qi)(qi)剛工作(zuo)(zuo)(zuo)是(shi)(shi)(shi)滿功率，加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)溫(wen)度(du)了(le)(le)(le)，就(jiu)(jiu)是(shi)(shi)(shi)工作(zuo)(zuo)(zuo)會，停會。總體(ti)上(shang)(shang)來說，電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)器(qi)(qi)(qi)(qi)耗(hao)電(dian)(dian)(dian)(dian)(dian)(dian)量(liang)是(shi)(shi)(shi)很小的(de)(de)，因為(wei)(wei)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)器(qi)(qi)(qi)(qi)不(bu)(bu)(bu)是(shi)(shi)(shi)直(zhi)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)工作(zuo)(zuo)(zuo)的(de)(de)，而是(shi)(shi)(shi)有間隙的(de)(de)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)的(de)(de)，先是(shi)(shi)(shi)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)，然后(hou)(hou)達到(dao)(dao)溫(wen)度(du)后(hou)(hou)就(jiu)(jiu)停止加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)，之后(hou)(hou)就(jiu)(jiu)開始(shi)保(bao)溫(wen)工作(zuo)(zuo)(zuo)，直(zhi)到(dao)(dao)溫(wen)度(du)沒達到(dao)(dao)預設的(de)(de)溫(wen)度(du)后(hou)(hou)再加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)下，整(zheng)體(ti)上(shang)(shang)來講，電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)器(qi)(qi)(qi)(qi)并(bing)不(bu)(bu)(bu)是(shi)(shi)(shi)直(zhi)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)耗(hao)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)，所以也(ye)(ye)是(shi)(shi)(shi)比較(jiao)省(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)個原(yuan)因。同時(shi)因為(wei)(wei)料筒上(shang)(shang)還包有層保(bao)溫(wen)棉，能起(qi)到(dao)(dao)保(bao)溫(wen)和隔熱(re)(re)(re)(re)的(de)(de)效果，那(nei)么(me)熱(re)(re)(re)(re)量(liang)就(jiu)(jiu)不(bu)(bu)(bu)會損(sun)失(shi)掉了(le)(le)(le)，那(nei)么(me)能夠持續恒溫(wen)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)的(de)(de)時(shi)間就(jiu)(jiu)越長了(le)(le)(le)。耗(hao)電(dian)(dian)(dian)(dian)(dian)(dian)量(liang)也(ye)(ye)就(jiu)(jiu)越小了(le)(le)(le)。通過(guo)上(shang)(shang)述對電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)感應(ying)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)器(qi)(qi)(qi)(qi)改造(zao)時(shi)所配功率的(de)(de)介(jie)紹，我們可以了(le)(le)(le)解電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)器(qi)(qi)(qi)(qi)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)的(de)(de)時(shi)間越短那(nei)么(me)耗(hao)電(dian)(dian)(dian)(dian)(dian)(dian)量(liang)就(jiu)(jiu)越小，反(fan)之電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)器(qi)(qi)(qi)(qi)加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)的(de)(de)時(shi)間越長，耗(hao)電(dian)(dian)(dian)(dian)(dian)(dian)量(liang)就(jiu)(jiu)越大。

電磁(ci)加熱板為什么容易(yi)出(chu)問題？平時沒有注意機(ji)器內部(bu)清潔，灰(hui)塵(chen)過多(duo)導(dao)致(zhi)機(ji)器短(duan)路。板子(zi)設(she)計缺(que)陷(xian)。模塊問題。

電磁(ci)加熱器用薄(bo)膜電容的要求和注意事項：

1、耐(nai)壓(ya)(ya)選擇不當：例如(ru)(ru),交(jiao)流輸入端,380V的(de)線電壓(ya)(ya),EMI電路(lu)(lu)用(yong)的(de)電容(rong)器,三角形(xing)接法,部分(fen)工程師選擇MKP-X2 275V.AC (這會導致(zhi)電容(rong)擊穿)。例如(ru)(ru),LC諧(xie)振(zhen)回路(lu)(lu),很多工程師以為(wei)半(ban)橋(qiao)諧(xie)振(zhen)電容(rong),耐(nai)壓(ya)(ya)只是(shi)直流母線537V的(de)半(ban)即可(實際(ji)上這是(shi)嚴重錯誤(wu)的(de))。國(guo)內的(de)機芯(xin),有使用(yong)的(de)薄(bo)膜(mo)電容(rong)器耐(nai)壓(ya)(ya)等1200V 1600V 2000V 2500V 3000V 4000V 需要(yao)根據自己的(de)實際(ji)電路(lu)(lu)來選擇。正確的(de)方式是(shi)用(yong)示(shi)波(bo)(bo)器加高壓(ya)(ya)探頭,實際(ji)測(ce)量下機芯(xin)在大功率的(de)時(shi)候,諧(xie)振(zhen)電壓(ya)(ya)的(de)波(bo)(bo)形(xing)。

2、電(dian)(dian)流(liu)選擇(ze)不當：很多企業的(de)(de)工程師,研(yan)發人員,對于(yu)直流(liu)母線支撐電(dian)(dian)容(rong)(rong)器(qi),LC諧振(zhen)電(dian)(dian)容(rong)(rong)器(qi),電(dian)(dian)容(rong)(rong)器(qi)的(de)(de)電(dian)(dian)流(liu)方面根本就沒(mei)經過(guo)具(ju)體計算和實際測(ce)量(liang),造成電(dian)(dian)容(rong)(rong)器(qi)工作溫度非常(chang)高(gao),大大縮短薄(bo)膜(mo)電(dian)(dian)容(rong)(rong)器(qi)的(de)(de)使(shi)用壽(shou)命,嚴重的(de)(de)出現短時(shi)間就炸(zha)掉電(dian)(dian)容(rong)(rong)器(qi)了(le)。正確的(de)(de)方式,就是用電(dian)(dian)流(liu)互(hu)感(gan)器(qi)測(ce)量(liang)下諧振(zhen)回路的(de)(de)電(dian)(dian)流(liu)值(zhi),還有通(tong)過(guo)機子(zi)在老化的(de)(de)時(shi)候測(ce)測(ce)電(dian)(dian)容(rong)(rong)器(qi)的(de)(de)溫升是否正常(chang)。

3、接線方式不當(dang)：在設計電磁(ci)加(jia)熱機芯(xin)的(de)(de)(de)時候,很(hen)多(duo)情況下需要多(duo)個(ge)薄膜電容器(qi)并聯(lian)(lian)使用.并聯(lian)(lian)的(de)(de)(de)好處就是可以(yi)增加(jia)過(guo)流能力(li),降低(di)溫升.但是并聯(lian)(lian)電路,大的(de)(de)(de)問(wen)題是過(guo)流不均.由于接線方式的(de)(de)(de)不當(dang),往(wang)往(wang)造成并聯(lian)(lian)的(de)(de)(de)幾(ji)只電容器(qi),某個(ge)位置的(de)(de)(de)電容器(qi)溫度高,容易先壞掉(diao)。

電(dian)磁加熱(re)器裝置(zhi)后(hou)(hou)溫(wen)(wen)度(du)(du)不(bu)(bu)達(da)標處理方法，當造粒機類似大(da)功(gong)率時(shi)，安裝電(dian)磁加熱(re)器后(hou)(hou)，溫(wen)(wen)度(du)(du)總達(da)不(bu)(bu)到。電(dian)磁加熱(re)器也直工作(zuo)，電(dian)流(liu)也正常，但溫(wen)(wen)度(du)(du)總上(shang)不(bu)(bu)去(qu)。般情況(kuang)是(shi)功(gong)率不(bu)(bu)夠大(da)。可(ke)以加大(da)實(shi)(shi)際功(gong)率來(lai)實(shi)(shi)現。要是(shi)確定實(shi)(shi)際功(gong)率不(bu)(bu)小(xiao)了，這是(shi)由炮筒(tong)的材料引起(qi)的，不(bu)(bu)同(tong)(tong)材質的在不(bu)(bu)同(tong)(tong)的工作(zuo)頻率時(shi)吸收熱(re)量也不(bu)(bu)同(tong)(tong)。應(ying)該嘗試增(zeng)加諧振電(dian)容容量，讓Q值增(zeng)加，提(ti)高線圈高頻電(dian)流(liu)。可(ke)以使炮筒(tong)內外(wai)溫(wen)(wen)度(du)(du)均勻來(lai)達(da)到提(ti)高炮筒(tong)的溫(wen)(wen)度(du)(du)。條件(jian)允話的話，可(ke)以換掉炮筒(tong)試試。

電磁加熱器(qi)多(duo)溫區(qu)控制就是(shi)有(you)兩種：

第種：是臺(tai)電磁加(jia)熱控制(zhi)器控制(zhi)多組線圈。

第二種:是(shi)臺設備使(shi)用多(duo)個(ge)電磁加(jia)熱控制(zhi)器分(fen)別控制(zhi)多(duo)個(ge)線圈。現在例如(ru)注(zhu)塑機(ji)(ji)，拉絲(si)機(ji)(ji)，吹膜(mo)機(ji)(ji)，擠出機(ji)(ji)等機(ji)(ji)械設備，料管加(jia)熱部分(fen)都需要幾個(ge)不同溫度才能滿(man)足(zu)生產，這時候就要使(shi)用到電磁加(jia)熱器多(duo)溫區來控制(zhi)。

第三(san)種：臺電磁(ci)加(jia)熱控(kong)制(zhi)器(qi)控(kong)制(zhi)多組(zu)線(xian)圈比(bi)較少用，因為如果主機旦(dan)出現故(gu)障，整個(ge)幾個(ge)溫度都將無(wu)法加(jia)熱，影(ying)響正(zheng)規生產，而且維護起來也(ye)是比(bi)較麻煩的。

第四種：多個電磁(ci)加(jia)熱控制器分(fen)別控制獨立線圈，這(zhe)樣不但便(bian)(bian)于管理，而且加(jia)熱非常均勻，維護起(qi)來也是十分(fen)方便(bian)(bian)的。

電磁加熱器的(de)全橋和半橋的(de)應用表現(xian)的(de)同異：

、據各自的(de)(de)電路原理的(de)(de)差別(bie)決定：相(xiang)同：均可達到(dao)使得(de)相(xiang)應料筒自身快速發熱產生高溫(wen)，用于加工塑料的(de)(de)功(gong)用。

二、功率段表現上不同：

1、全橋：對應檔位功率分配清(qing)晰(xi)、明確，反應迅速。

2、半橋：對(dui)應(ying)檔位功率分(fen)配較模糊，反應(ying)相(xiang)對(dui)合理。

三、發熱面表現上：

1、全橋：因可負(fu)載負(fu)荷較高，發(fa)熱面(mian)較大(da)、較均勻、層次感(gan)能做到循序遞減，火(huo)焰(yan)仿真效果明顯。

2、半橋：因可負(fu)載負(fu)荷較低(di)，發熱面(mian)較小、均(jun)勻(yun)性稍遜(xun)、層次(ci)感(gan)分明，火焰(yan)仿真效果稍遜(xun)。