電熱毯有哪些類型 常見電熱毯的分類
按信號分類
①不帶信號線型:用于普通(tong)型電(dian)(dian)熱(re)毯。使用的電(dian)(dian)熱(re)合金絲(si)有直線狀(zhuang)的,但更多的是(shi)呈(cheng)螺旋狀(zhuang)纏繞在耐(nai)熱(re)芯(xin)線上,外面涂(tu)覆一層(ceng)耐(nai)熱(re)樹脂。
②帶信號線型:用于(yu)調(diao)溫型電熱(re)(re)毯(tan)中。線芯用玻璃(li)纖(xian)維或(huo)(huo)滌(di)綸絲(si)編(bian)成(cheng),上面纏(chan)繞著柔韌可撓的(de)電熱(re)(re)合金(jin)絲(si)(或(huo)(huo)箔帶),外面包覆一(yi)層(ceng)尼龍感(gan)熱(re)(re)層(ceng)或(huo)(huo)特種塑料感(gan)熱(re)(re)層(ceng),再(zai)將一(yi)種銅(tong)合金(jin)信號線繞在感(gan)熱(re)(re)層(ceng)外,最外面涂覆一(yi)層(ceng)耐(nai)熱(re)(re)樹脂。當電熱(re)(re)毯(tan)上任一(yi)點處的(de)溫度超過(guo)預定(ding)值時(shi),該處相應的(de)電熱(re)(re)絲(si)上的(de)感(gan)熱(re)(re)層(ceng)即(ji)由絕緣體變為良導(dao)體,使(shi)控制電路接通,電熱(re)(re)毯(tan)斷(duan)電,達到控溫和安全防(fang)護的(de)目(mu)的(de)。
采用(yong)(yong)不(bu)帶信(xin)號線型電(dian)熱元件(jian)的(de)普(pu)通型電(dian)熱毯,如(ru)要(yao)實(shi)現控溫(wen),一般設有兩(liang)類控溫(wen)元件(jian):一類是過熱安全恒溫(wen)器(qi),每床(chuang)電(dian)熱毯約需(xu)8~9個(ge),串聯(lian)在電(dian)熱元件(jian)上,起安全防護作(zuo)(zuo)用(yong)(yong);另(ling)一類是恒溫(wen)器(qi)控制器(qi),設在床(chuang)頭(tou)或手(shou)邊,起調節溫(wen)度的(de)作(zuo)(zuo)用(yong)(yong)。采用(yong)(yong)帶有信(xin)號線的(de)電(dian)熱元件(jian)的(de)電(dian)熱毯僅需(xu)恒溫(wen)控制器(qi)。
電(dian)(dian)熱(re)毯是與(yu)人(ren)體(ti)(ti)接觸最(zui)(zui)近、接觸時間(jian)最(zui)(zui)長(chang),對人(ren)體(ti)(ti)危害最(zui)(zui)嚴重的家用(yong)電(dian)(dian)器。現在(zai)人(ren)們在(zai)用(yong)的絕大(da)多數電(dian)(dian)熱(re)毯電(dian)(dian)磁波輻(fu)射強度(du)超(chao)過國家標準20~100倍,時時刻刻傷害著(zhu)千千萬(wan)萬(wan)人(ren)的身體(ti)(ti)健康!面對電(dian)(dian)熱(re)毯強烈的電(dian)(dian)磁輻(fu)射該怎(zen)么(me)辦?應立即停止使用(yong)有(you)電(dian)(dian)磁波輻(fu)射的電(dian)(dian)熱(re)毯!
按采用的電源性質和調溫性能分
1、普通型電熱毯。采用220V供(gong)電(dian)(dian),依靠電(dian)(dian)源(yuan)開關的(de)通斷,來實(shi)現通電(dian)(dian)加熱斷電(dian)(dian)降(jiang)溫(wen),其結(jie)構簡(jian)單,但控制溫(wen)度不(bu)方便(bian)。
2、簡單調溫型電熱毯。它是用一個簡單調溫開關來控制電源的通斷,達到控溫目的。該開關是在普通開關的基礎上增加一檔開關,起調整功率的作用。使用時開關置正常檔位,電熱毯升溫快,并達到比較合適的溫度。然后將開關置調溫檔位,其發熱功率約為原來功率的四分之一,以保持溫度不致過熱。
3、恒溫電熱毯。它采(cai)用(yong)恒(heng)溫控制裝置,使電(dian)熱毯(tan)的發熱溫度基本保(bao)持(chi)在38℃左右(you)。恒(heng)溫電(dian)熱毯(tan)屬于較高(gao)檔的電(dian)熱毯(tan)。
4、安全型電熱毯。它使用交流24V以下的工作電壓,需先將220V交流電壓經變壓器變壓后,變成24V以下的交流安全電壓,因而配備有一只變壓器。
5、多功能低壓保健電熱毯。該種電熱毯具有以下一些優點(dian):
首先是安(an)全、高(gao)效(xiao)節電(dian)(dian)(dian)(dian)(dian)(dian)。產(chan)(chan)品采(cai)用電(dian)(dian)(dian)(dian)(dian)(dian)子變頻隔離變壓(ya)器電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu),將(jiang)220V電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)進行隔離和降(jiang)壓(ya),為發熱(re)(re)絲供電(dian)(dian)(dian)(dian)(dian)(dian)的(de)24V電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)與220V電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)采(cai)用磁(ci)耦合(he),成為兩(liang)個獨立的(de)回路(lu)(lu),確保了產(chan)(chan)品在工作(zuo)中與220V電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)隔離,體現了低壓(ya)安(an)全的(de)特性,電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中設計了短(duan)路(lu)(lu)、斷路(lu)(lu)保護裝(zhuang)置。負載短(duan)路(lu)(lu)后自動關斷電(dian)(dian)(dian)(dian)(dian)(dian)源,不再輸出電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya),在短(duan)路(lu)(lu)故障排除后,電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)仍(reng)可(ke)正(zheng)常工作(zuo)。其發熱(re)(re)元件采(cai)用新(xin)型合(he)金發熱(re)(re)絲,低阻(zu)值,電(dian)(dian)(dian)(dian)(dian)(dian)導率高(gao),熱(re)(re)效(xiao)率高(gao),升溫快。
其次是調溫(wen)(wen)(wen)控(kong)(kong)溫(wen)(wen)(wen),調溫(wen)(wen)(wen)開(kai)關(guan)采用雙(shuang)路雙(shuang)溫(wen)(wen)(wen)雙(shuang)控(kong)(kong),同一(yi)(yi)床電熱毯(tan)上可(ke)(ke)根據不(bu)同需要(yao)控(kong)(kong)制在(zai)兩個不(bu)同的(de)溫(wen)(wen)(wen)區,即可(ke)(ke)使兩的(de)邊(bian)溫(wen)(wen)(wen)度同高(gao)同低,也(ye)可(ke)(ke)一(yi)(yi)高(gao)一(yi)(yi)低,實現雙(shuang)人溫(wen)(wen)(wen)差的(de)調控(kong)(kong)功(gong)能(neng)。溫(wen)(wen)(wen)控(kong)(kong)開(kai)關(guan)可(ke)(ke)分別控(kong)(kong)制兩路電熱絲,溫(wen)(wen)(wen)升可(ke)(ke)控(kong)(kong)制在(zai)15~45℃的(de)范(fan)圍內,具有適應人體需要(yao)的(de)調溫(wen)(wen)(wen)、控(kong)(kong)溫(wen)(wen)(wen)、保(bao)暖去寒功(gong)能(neng)。
6、具有磁療保健功能的電熱毯。該種電熱毯經220V向24V低壓的轉換是通過磁場變頻降壓來完成的,工作頻率在25kHz范圍內,由于發熱元件特殊結構的作用,使電熱毯在工作時產生適宜的磁通量,與一些磁療或脈沖保健用品的磁通量相吻合,根據人體生理的構成情況進行設計,可直接作用于人體穴位,使周身穴位得到調節,疏筋活絡,促使肌體各關節輕松舒展,改善血液循環促進細胞代謝,使內分泌旺盛。