作者:中輝(hui)電器 來源(yuan):www.shenzhentuliao.cn 發布時間(jian):2019/4/30 11:35:17
電磁感(gan)應加熱器對比普通熱圈加熱方式(shi)有什么優勢?
1、耗電(dian)的95%轉化(hua)為工作熱能線(xian)圈損耗≈2%,控制(zhi)單(dan)元損耗≈2%,緣(yuan)隔熱層可以將98%的能量保(bao)留(liu)在料筒上(shang)。
2、只(zhi)加熱料筒,而螺桿保持(chi)冷卻。
3、消除加熱的慣性現象,升(sheng)溫降溫迅速(su)。
4、電磁感應(ying)加熱器加熱無(wu)死(si)角,整體(ti)料(liao)筒均勻(yun)加熱。
5、電磁線圈保(bao)持涼爽,因此(ci)壽命(ming)超長(chang)。
普及下電(dian)(dian)(dian)磁(ci)(ci)加(jia)熱(re)器(qi)(qi)的(de)應用原理(li),電(dian)(dian)(dian)磁(ci)(ci)加(jia)熱(re)是將380V50Hz交(jiao)流(liu)電(dian)(dian)(dian)變成530VDC-560VDC50HZ直流(liu)電(dian)(dian)(dian),再經(jing)過(guo)變頻(pin)(pin)控(kong)制技術逆變成5KHZ-30Hz的(de)高(gao)頻(pin)(pin)交(jiao)流(liu)電(dian)(dian)(dian)流(liu),通過(guo)電(dian)(dian)(dian)磁(ci)(ci)加(jia)熱(re)感應器(qi)(qi)與電(dian)(dian)(dian)磁(ci)(ci)線圈組合轉換為高(gao)頻(pin)(pin)交(jiao)變磁(ci)(ci)場(chang),交(jiao)變磁(ci)(ci)場(chang)的(de)磁(ci)(ci)力線作用到(dao)金屬(shu)管道上產生(sheng)鍋流(liu),從而(er)快速加(jia)熱(re)金屬(shu)管道。
電(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)加熱(re)(re)(re)器(qi)(qi)(qi)工(gong)(gong)作原(yuan)理(li):電(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)加熱(re)(re)(re)是(shi)(shi)利(li)用電(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)感應原(yuan)理(li)將電(dian)(dian)(dian)(dian)(dian)(dian)(dian)能(neng)(neng)轉(zhuan)換(huan)為(wei)(wei)熱(re)(re)(re)能(neng)(neng)的(de)(de)(de)能(neng)(neng)量轉(zhuan)換(huan)過(guo)程,由整流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)將50/60Hz的(de)(de)(de)交(jiao)(jiao)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓轉(zhuan)變(bian)(bian)成(cheng)(cheng)直(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓,再經過(guo)功率(lv)控(kong)(kong)制(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)將直(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓轉(zhuan)換(huan)成(cheng)(cheng)頻(pin)(pin)率(lv)為(wei)(wei)20~40kHz的(de)(de)(de)高頻(pin)(pin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓,當高速變(bian)(bian)化的(de)(de)(de)交(jiao)(jiao)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)通(tong)過(guo)線(xian)圈(quan)時(shi)(shi),線(xian)圈(quan)會產生高速變(bian)(bian)化的(de)(de)(de)磁(ci)(ci)場,磁(ci)(ci)場內(nei)的(de)(de)(de)交(jiao)(jiao)變(bian)(bian)磁(ci)(ci)力線(xian)通(tong)過(guo)金屬管道時(shi)(shi)(導磁(ci)(ci)、導電(dian)(dian)(dian)(dian)(dian)(dian)(dian)材料),管壁(bi)體(ti)內(nei)產生無數的(de)(de)(de)小(xiao)渦流(liu)(liu)(liu)(liu),使輸(shu)油管道的(de)(de)(de)管壁(bi)本身自行(xing)發(fa)熱(re)(re)(re)與原(yuan)油進行(xing)熱(re)(re)(re)交(jiao)(jiao)換(huan),達到加熱(re)(re)(re)原(yuan)油的(de)(de)(de)目的(de)(de)(de)。變(bian)(bian)頻(pin)(pin)器(qi)(qi)(qi)是(shi)(shi)高頻(pin)(pin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)加熱(re)(re)(re)器(qi)(qi)(qi)的(de)(de)(de)核心部(bu)件,是(shi)(shi)利(li)用電(dian)(dian)(dian)(dian)(dian)(dian)(dian)力半導體(ti)器(qi)(qi)(qi)件的(de)(de)(de)通(tong)斷(duan)作用將工(gong)(gong)頻(pin)(pin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)變(bian)(bian)換(huan)為(wei)(wei)另頻(pin)(pin)率(lv)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)能(neng)(neng)控(kong)(kong)制(zhi)(zhi)裝置。目前使用的(de)(de)(de)變(bian)(bian)頻(pin)(pin)器(qi)(qi)(qi)主要(yao)采用交(jiao)(jiao)流(liu)(liu)(liu)(liu)—直(zhi)流(liu)(liu)(liu)(liu)—交(jiao)(jiao)流(liu)(liu)(liu)(liu)方式,先把工(gong)(gong)頻(pin)(pin)交(jiao)(jiao)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)通(tong)過(guo)整流(liu)(liu)(liu)(liu)器(qi)(qi)(qi)轉(zhuan)換(huan)成(cheng)(cheng)直(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan),然后再把直(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)轉(zhuan)換(huan)成(cheng)(cheng)頻(pin)(pin)率(lv)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓均可(ke)控(kong)(kong)制(zhi)(zhi)的(de)(de)(de)交(jiao)(jiao)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)供給(gei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動機(ji)。變(bian)(bian)頻(pin)(pin)器(qi)(qi)(qi)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)般由整流(liu)(liu)(liu)(liu)、中間直(zhi)流(liu)(liu)(liu)(liu)環節、逆變(bian)(bian)和控(kong)(kong)制(zhi)(zhi)4個部(bu)分組(zu)成(cheng)(cheng)。整流(liu)(liu)(liu)(liu)部(bu)分為(wei)(wei)三相橋(qiao)式不可(ke)控(kong)(kong)整流(liu)(liu)(liu)(liu)器(qi)(qi)(qi),逆變(bian)(bian)部(bu)分為(wei)(wei)IGBT三相橋(qiao)式逆變(bian)(bian)器(qi)(qi)(qi)且輸(shu)出為(wei)(wei)PWM波形(xing),中間直(zhi)流(liu)(liu)(liu)(liu)環節為(wei)(wei)濾波、直(zhi)流(liu)(liu)(liu)(liu)儲(chu)能(neng)(neng)和緩沖無功功率(lv)。
電磁加(jia)熱器的(de)質量是由什么(me)決定呢:
、重要元(yuan)器(qi)件的選擇。電磁加熱(re)控制器(qi)功率(lv)部(bu)分(fen)核心元(yuan)器(qi)件是IGBT模(mo)塊(kuai),IGBT的優劣直(zhi)(zhi)接(jie)影響到機器(qi)壽命長短(duan),建議直(zhi)(zhi)接(jie)從國內代理商那進貨,否(fou)則買(mai)到高(gao)仿或(huo)者翻新的IGBT模(mo)塊(kuai)仍然會出(chu)現質量(liang)問題。
二、主(zhu)(zhu)板(ban)(ban)的(de)(de)(de)選(xuan)擇(ze)。電(dian)磁(ci)加(jia)熱控制器的(de)(de)(de)主(zhu)(zhu)板(ban)(ban)分(fen)為三(san)部分(fen),電(dian)源板(ban)(ban)、信(xin)號(hao)板(ban)(ban)和驅動板(ban)(ban),要想(xiang)保(bao)(bao)證機(ji)(ji)器長時間穩定工(gong)作,主(zhu)(zhu)板(ban)(ban)要有各種保(bao)(bao)護:過(guo)載、過(guo)流(liu)和過(guo)熱,電(dian)磁(ci)加(jia)熱器應(ying)用現(xian)(xian)場(chang)環(huan)境很復雜(za),比如干擾(rao)等,旦(dan)出現(xian)(xian)非(fei)(fei)正常情況,主(zhu)(zhu)板(ban)(ban)應(ying)該能(neng)很快反應(ying)并(bing)保(bao)(bao)護機(ji)(ji)器,防止(zhi)非(fei)(fei)正常因素損壞機(ji)(ji)器,特別是IGBT。目(mu)前市(shi)場(chang)上很多所謂的(de)(de)(de)電(dian)磁(ci)加(jia)熱器廠(chang)家的(de)(de)(de)主(zhu)(zhu)板(ban)(ban)并(bing)不(bu)是自己開發的(de)(de)(de),而是直接(jie)(jie)購買的(de)(de)(de),然后自己組裝的(de)(de)(de),般出現(xian)(xian)問(wen)(wen)題,就直接(jie)(jie)讓客戶換主(zhu)(zhu)板(ban)(ban),并(bing)不(bu)能(neng)發現(xian)(xian)問(wen)(wen)題的(de)(de)(de)根源所在。
三(san)、高(gao)溫線(xian)的(de)(de)(de)選擇。高(gao)溫線(xian)是(shi)(shi)(shi)很多客戶容易忽視(shi)的(de)(de)(de)個問(wen)題(ti),目前市場上國(guo)標(biao)的(de)(de)(de)高(gao)溫線(xian)很難買(mai)到,不(bu)(bu)(bu)(bu)要(yao)相信商家的(de)(de)(de)所說的(de)(de)(de),定(ding)睜大眼(yan)睛(jing),不(bu)(bu)(bu)(bu)要(yao)嫌麻煩(fan),從重(zhong)量和(he)材(cai)質(zhi)上鑒定(ding)下是(shi)(shi)(shi)否(fou)是(shi)(shi)(shi)國(guo)標(biao)高(gao)溫線(xian),如(ru)果(guo)用到非標(biao)高(gao)溫線(xian),不(bu)(bu)(bu)(bu)僅僅影(ying)響(xiang)機(ji)(ji)器(qi)(qi)壽命(ming),還會影(ying)響(xiang)整機(ji)(ji)的(de)(de)(de)效率(lv),大家應該重(zhong)視(shi)這(zhe)個問(wen)題(ti)。四經驗(yan)的(de)(de)(de)差別。電磁(ci)(ci)(ci)加熱(re)(re)器(qi)(qi)安(an)裝(zhuang)的(de)(de)(de)好,和(he)安(an)裝(zhuang)的(de)(de)(de)不(bu)(bu)(bu)(bu)好效果(guo)是(shi)(shi)(shi)很大區(qu)別,這(zhe)點需要(yao)豐富的(de)(de)(de)安(an)裝(zhuang)實(shi)例,光(guang)靠幾組數(shu)據是(shi)(shi)(shi)分析不(bu)(bu)(bu)(bu)出來的(de)(de)(de),根(gen)本沒有這(zhe)樣的(de)(de)(de)經驗(yan)來支撐,完全(quan)靠理論在(zai)安(an)裝(zhuang)。人家說臺同型號的(de)(de)(de)電磁(ci)(ci)(ci)加熱(re)(re)器(qi)(qi),裝(zhuang)在(zai)同型號的(de)(de)(de)注塑機(ji)(ji)上,為什么(me)個省電40%以上,個剛(gang)剛(gang)夠理論數(shu)據的(de)(de)(de)30%,這(zhe)個不(bu)(bu)(bu)(bu)僅是(shi)(shi)(shi)機(ji)(ji)器(qi)(qi)的(de)(de)(de)差異(yi),電磁(ci)(ci)(ci)加熱(re)(re)器(qi)(qi)的(de)(de)(de)安(an)裝(zhuang)位(wei)置,線(xian)圈長(chang)短都有影(ying)響(xiang),如(ru)果(guo)是(shi)(shi)(shi)采用多組小功率(lv)的(de)(de)(de)電磁(ci)(ci)(ci)加熱(re)(re)器(qi)(qi),這(zhe)個差異(yi)就更為明顯。電磁(ci)(ci)(ci)加熱(re)(re)行業有個測試(shi)機(ji)(ji)器(qi)(qi)是(shi)(shi)(shi)否(fou)裝(zhuang)好的(de)(de)(de)方法,就是(shi)(shi)(shi)讓(rang)電磁(ci)(ci)(ci)加熱(re)(re)器(qi)(qi)工作2分鐘左(zuo)右,休息(xi)1分鐘左(zuo)右。
電(dian)(dian)磁加熱(re)節(jie)電(dian)(dian)分析(xi):電(dian)(dian)磁加熱(re)器在(zai)塑料機械上(shang)節(jie)能30%-70%是怎么來的?
1、相(xiang)比電(dian)阻加熱,電(dian)磁加熱器多了層(ceng)(ceng)保溫層(ceng)(ceng),熱能(neng)利(li)用率增加。
2、相比(bi)電阻加熱(re)(re),電磁(ci)加熱(re)(re)器直接作用于料(liao)管加熱(re)(re),減少了熱(re)(re)傳遞(di)熱(re)(re)能損耗。
3、相(xiang)比電阻(zu)加(jia)熱(re),電磁加(jia)熱(re)器的加(jia)熱(re)速(su)度要快四分之以上,減少了(le)加(jia)熱(re)時間。
4、相比電阻(zu)加(jia)熱,電磁加(jia)熱器的加(jia)熱速(su)度快,生(sheng)產效率就提(ti)高了,讓電機處在飽和狀態,使其減少了,高功(gong)率低需求造成(cheng)的電能損(sun)耗。
在(zai)使用電磁(ci)加(jia)熱器(qi)時(shi)要注意什么(me)?
1、使用(yong)程要輕(qing)易拆除(chu)電磁加熱(re)控制(zhi)板接導(dao)線(xian)接措施(shi)防止觸電道(dao)保護措施(shi)。
2、要(yao)定期(qi)清(qing)理散熱(re)(re)器保證電磷感應加熱(re)(re)器通風。
3、使用電磁加(jia)熱器(qi)應先按說明書繞(rao)線圈并檢查誤再接(jie)通(tong)電源。
4、保養清洗電磁(ci)加(jia)熱(re)器(qi)(qi)前切斷電磁(ci)加(jia)熱(re)器(qi)(qi)電源清潔電磁(ci)加(jia)熱(re)器(qi)(qi)外殼(ke)應(ying)用(yong)干凈抹布進行擦拭嚴禁用(yong)噴射水流沖洗外殼(ke)及電器(qi)(qi)箱部。
5、要(yao)電磁加(jia)熱器安裝潮濕環境防止水蒸汽進(jin)入電箱(xiang)易緣(yuan)介(jie)質表面凝結降低其緣(yuan)性(xing)能造漏(lou)電事故。
6、要經檢(jian)查(cha)電磁加熱器進風(feng)口及散熱風(feng)扇防止進風(feng)口處堵塞或散熱風(feng)扇卡死避(bi)免熱停機保護(hu)。
電磁感(gan)應加熱(re)器線圈發熱(re)的問題:
1、如(ru)果(guo)將金(jin)(jin)屬物體(ti)置于磁場中,或把它(ta)在(zai)(zai)磁場中切割(ge)磁力線時,其內(nei)部會(hui)產生感應電流。這種感應電流會(hui)使金(jin)(jin)屬塊會(hui)很快的發熱(re)(re)(re)。電磁感應加熱(re)(re)(re)器的線圈發熱(re)(re)(re)要看溫度(du)(du)達到多少度(du)(du),在(zai)(zai)般(ban)的情況下(xia),電磁線圈的正常溫度(du)(du)在(zai)(zai)70度(du)(du)左(zuo)右(you),80度(du)(du)以(yi)下(xia)才是(shi)正常的,如(ru)果(guo)超過了90度(du)(du),肯(ken)定就是(shi)有問題了。
2、電磁感應(ying)加(jia)熱(re)器(qi)線(xian)圈本身的(de)(de)(de)(de)問題(ti):線(xian)圈的(de)(de)(de)(de)問題(ti)就涉及的(de)(de)(de)(de)質量和選配上了(le)。(質量上的(de)(de)(de)(de)問題(ti)就不(bu)(bu)講解了(le)),如果(guo)是(shi)使用(yong)高頻線(xian),那(nei)線(xian)般問題(ti)不(bu)(bu)大(da)。這種情(qing)況其實(shi)還(huan)是(shi)主板的(de)(de)(de)(de)問題(ti),我(wo)們的(de)(de)(de)(de)以(yi)(yi)(yi)前(qian)的(de)(de)(de)(de)主板也(ye)會(hui)(hui)有(you)(you)這個(ge)問題(ti),因為主板缺陷(xian),而25平(ping)(ping)方的(de)(de)(de)(de)線(xian)也(ye)比較粗了(le),集膚(fu)效應(ying)導致線(xian)材發(fa)熱(re)也(ye)是(shi)必然的(de)(de)(de)(de),以(yi)(yi)(yi)前(qian)我(wo)們都是(shi)用(yong)多(duo)(duo)股漆包高頻線(xian)來解決密封電氣箱內,每個(ge)器(qi)件的(de)(de)(de)(de)發(fa)熱(re)量的(de)(de)(de)(de),其實(shi)使用(yong)上沒(mei)什么區(qu)別,就是(shi)安裝(zhuang)變(bian)得(de)繁瑣了(le)些(xie),不(bu)(bu)過現(xian)(xian)(xian)(xian)在公司(si)(si)的(de)(de)(de)(de)電蔗感應(ying)加(jia)熱(re)器(qi)已經(jing)改(gai)善,調整(zheng)了(le)機器(qi)的(de)(de)(de)(de)Q值,并對整(zheng)個(ge)機芯做了(le)隔熱(re)、散熱(re)處理,斷不(bu)(bu)會(hui)(hui)出(chu)現(xian)(xian)(xian)(xian)單根25平(ping)(ping)方線(xian)高溫現(xian)(xian)(xian)(xian)象(xiang),所(suo)以(yi)(yi)(yi)如果(guo)大(da)家買了(le)機器(qi)發(fa)熱(re)量過大(da),又(you)不(bu)(bu)好(hao)(hao)退換的(de)(de)(de)(de)話,可(ke)以(yi)(yi)(yi)考慮下用(yong)多(duo)(duo)股線(xian)來代替單的(de)(de)(de)(de)25平(ping)(ping)方線(xian),當然好(hao)(hao)還(huan)是(shi)找有(you)(you)實(shi)力的(de)(de)(de)(de)公司(si)(si)購買,畢竟多(duo)(duo)少(shao)是(shi)因為設計(ji)問題(ti)而導致的(de)(de)(de)(de)發(fa)熱(re)現(xian)(xian)(xian)(xian)象(xiang)。
電磁加(jia)熱板為什么(me)容易出問題(ti)?平時沒有注意機器(qi)內(nei)部清潔,灰(hui)塵過(guo)多導致機器(qi)短路。板子設(she)計缺(que)陷(xian)。模塊問題(ti)。
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