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一種液體加熱裝置的控溫電路的制作方法

文檔序(xu)號:11177615閱讀:1135來源(yuan):國知局
一種液體加熱裝置的控溫電路的制造方法

本(ben)實用新型涉及電(dian)子電(dian)路(lu)領域,尤其是(shi)一(yi)種液體(ti)加熱裝置(zhi)的控溫電(dian)路(lu)。



背景技術:

現有技術中的(de)液體加熱裝置的(de)常采用PID算法進行溫(wen)(wen)度(du)控(kong)(kong)制,但是在(zai)PID控(kong)(kong)溫(wen)(wen)過程中需要對繼電器開關頻繁開啟和關閉,因(yin)此對繼電器的(de)壽(shou)命要求較高,也(ye)可能因(yin)此導致(zhi)控(kong)(kong)溫(wen)(wen)電路控(kong)(kong)制精度(du)下降以及繼電器使用壽(shou)命的(de)降低。



技術實現要素:

為了(le)解決(jue)上述技(ji)術問題,本(ben)實(shi)用(yong)新型的目的是:提供一種避免繼電(dian)器頻(pin)繁(fan)開關導(dao)致壽命降低和精度下(xia)降的液體加熱(re)裝置的控溫電(dian)路。

本實(shi)用(yong)新型(xing)所(suo)(suo)(suo)采用(yong)的(de)(de)(de)(de)(de)(de)技術方(fang)案是:一(yi)種液體(ti)加熱(re)裝置的(de)(de)(de)(de)(de)(de)控(kong)(kong)(kong)溫(wen)電(dian)(dian)(dian)(dian)路(lu),包括(kuo)(kuo)有控(kong)(kong)(kong)制(zhi)(zhi)芯片(pian)(pian)、過零檢(jian)測電(dian)(dian)(dian)(dian)路(lu)、繼(ji)(ji)(ji)電(dian)(dian)(dian)(dian)器模(mo)塊(kuai)(kuai)、可(ke)控(kong)(kong)(kong)硅緩沖(chong)電(dian)(dian)(dian)(dian)路(lu)和(he)溫(wen)度(du)檢(jian)測電(dian)(dian)(dian)(dian)路(lu),所(suo)(suo)(suo)述(shu)(shu)過零檢(jian)測電(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)(de)(de)(de)輸(shu)(shu)入(ru)(ru)端用(yong)于(yu)接(jie)(jie)(jie)入(ru)(ru)交流(liu)電(dian)(dian)(dian)(dian)源,所(suo)(suo)(suo)述(shu)(shu)過零檢(jian)測電(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)(de)(de)(de)輸(shu)(shu)出端連(lian)(lian)(lian)接(jie)(jie)(jie)至(zhi)控(kong)(kong)(kong)制(zhi)(zhi)芯片(pian)(pian)的(de)(de)(de)(de)(de)(de)外部中斷(duan)輸(shu)(shu)入(ru)(ru)端,所(suo)(suo)(suo)述(shu)(shu)控(kong)(kong)(kong)制(zhi)(zhi)芯片(pian)(pian)的(de)(de)(de)(de)(de)(de)第(di)一(yi)輸(shu)(shu)出端連(lian)(lian)(lian)接(jie)(jie)(jie)至(zhi)繼(ji)(ji)(ji)電(dian)(dian)(dian)(dian)器模(mo)塊(kuai)(kuai)的(de)(de)(de)(de)(de)(de)控(kong)(kong)(kong)制(zhi)(zhi)端,所(suo)(suo)(suo)述(shu)(shu)繼(ji)(ji)(ji)電(dian)(dian)(dian)(dian)器模(mo)塊(kuai)(kuai)的(de)(de)(de)(de)(de)(de)開關觸(chu)點(dian)(dian)的(de)(de)(de)(de)(de)(de)一(yi)端用(yong)于(yu)接(jie)(jie)(jie)入(ru)(ru)交流(liu)電(dian)(dian)(dian)(dian)源,所(suo)(suo)(suo)述(shu)(shu)繼(ji)(ji)(ji)電(dian)(dian)(dian)(dian)器模(mo)塊(kuai)(kuai)的(de)(de)(de)(de)(de)(de)開關觸(chu)點(dian)(dian)的(de)(de)(de)(de)(de)(de)另一(yi)端與可(ke)控(kong)(kong)(kong)硅緩沖(chong)電(dian)(dian)(dian)(dian)路(lu)連(lian)(lian)(lian)接(jie)(jie)(jie),所(suo)(suo)(suo)述(shu)(shu)控(kong)(kong)(kong)制(zhi)(zhi)芯片(pian)(pian)的(de)(de)(de)(de)(de)(de)第(di)二輸(shu)(shu)出端連(lian)(lian)(lian)接(jie)(jie)(jie)至(zhi)可(ke)控(kong)(kong)(kong)硅緩沖(chong)電(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)(de)(de)(de)控(kong)(kong)(kong)制(zhi)(zhi)端,所(suo)(suo)(suo)述(shu)(shu)溫(wen)度(du)檢(jian)測電(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)(de)(de)(de)輸(shu)(shu)出端連(lian)(lian)(lian)接(jie)(jie)(jie)至(zhi)控(kong)(kong)(kong)制(zhi)(zhi)芯片(pian)(pian)的(de)(de)(de)(de)(de)(de)輸(shu)(shu)入(ru)(ru)端, 所(suo)(suo)(suo)述(shu)(shu)溫(wen)度(du)檢(jian)測電(dian)(dian)(dian)(dian)路(lu)包括(kuo)(kuo)有精密(mi)電(dian)(dian)(dian)(dian)阻、分壓電(dian)(dian)(dian)(dian)阻、第(di)一(yi)電(dian)(dian)(dian)(dian)容和(he)精密(mi)NTC熱(re)敏電(dian)(dian)(dian)(dian)阻。

進(jin)一(yi)(yi)(yi)步,所述(shu)(shu)(shu)(shu)過零(ling)檢(jian)測(ce)電(dian)路(lu)包(bao)括(kuo)有第(di)(di)一(yi)(yi)(yi)分壓模塊(kuai)和(he)第(di)(di)一(yi)(yi)(yi)輸出(chu)模塊(kuai);所述(shu)(shu)(shu)(shu)第(di)(di)一(yi)(yi)(yi)分壓模塊(kuai)包(bao)括(kuo)有第(di)(di)一(yi)(yi)(yi)電(dian)阻(zu)(zu)、第(di)(di)二(er)(er)電(dian)阻(zu)(zu)和(he)第(di)(di)一(yi)(yi)(yi)二(er)(er)極管(guan)(guan),所述(shu)(shu)(shu)(shu)第(di)(di)一(yi)(yi)(yi)電(dian)阻(zu)(zu)的(de)(de)(de)(de)一(yi)(yi)(yi)端(duan)(duan)(duan)(duan)作(zuo)為(wei)過零(ling)檢(jian)測(ce)電(dian)路(lu)的(de)(de)(de)(de)輸入端(duan)(duan)(duan)(duan),所述(shu)(shu)(shu)(shu)第(di)(di)一(yi)(yi)(yi)電(dian)阻(zu)(zu)的(de)(de)(de)(de)另一(yi)(yi)(yi)端(duan)(duan)(duan)(duan)分別(bie)連接(jie)(jie)至第(di)(di)二(er)(er)電(dian)阻(zu)(zu)的(de)(de)(de)(de)一(yi)(yi)(yi)端(duan)(duan)(duan)(duan)和(he)第(di)(di)一(yi)(yi)(yi)二(er)(er)極管(guan)(guan)的(de)(de)(de)(de)陰(yin)極,所述(shu)(shu)(shu)(shu)第(di)(di)二(er)(er)電(dian)阻(zu)(zu)的(de)(de)(de)(de)另一(yi)(yi)(yi)端(duan)(duan)(duan)(duan)和(he)第(di)(di)一(yi)(yi)(yi)二(er)(er)極管(guan)(guan)的(de)(de)(de)(de)陽極接(jie)(jie)地;所述(shu)(shu)(shu)(shu)第(di)(di)一(yi)(yi)(yi)輸出(chu)模塊(kuai)包(bao)括(kuo)有NPN三極管(guan)(guan)、上(shang)拉(la)電(dian)阻(zu)(zu)和(he)輸出(chu)電(dian)阻(zu)(zu),所述(shu)(shu)(shu)(shu)第(di)(di)一(yi)(yi)(yi)電(dian)阻(zu)(zu)的(de)(de)(de)(de)另一(yi)(yi)(yi)端(duan)(duan)(duan)(duan)還連接(jie)(jie)至NPN三極管(guan)(guan)的(de)(de)(de)(de)基極,所述(shu)(shu)(shu)(shu)NPN三極管(guan)(guan)的(de)(de)(de)(de)集電(dian)極分別(bie)連接(jie)(jie)至上(shang)拉(la)電(dian)阻(zu)(zu)的(de)(de)(de)(de)一(yi)(yi)(yi)端(duan)(duan)(duan)(duan)和(he)輸出(chu)電(dian)阻(zu)(zu)的(de)(de)(de)(de)一(yi)(yi)(yi)端(duan)(duan)(duan)(duan),所述(shu)(shu)(shu)(shu)上(shang)拉(la)電(dian)阻(zu)(zu)的(de)(de)(de)(de)另一(yi)(yi)(yi)端(duan)(duan)(duan)(duan)接(jie)(jie)高電(dian)平,所述(shu)(shu)(shu)(shu)輸出(chu)電(dian)阻(zu)(zu)的(de)(de)(de)(de)另一(yi)(yi)(yi)端(duan)(duan)(duan)(duan)作(zuo)為(wei)過零(ling)檢(jian)測(ce)電(dian)路(lu)的(de)(de)(de)(de)輸出(chu)端(duan)(duan)(duan)(duan),所述(shu)(shu)(shu)(shu)NPN三極管(guan)(guan)的(de)(de)(de)(de)射極接(jie)(jie)地。

進一(yi)步,所述(shu)可控硅緩沖電(dian)(dian)路(lu)包(bao)括(kuo)(kuo)有可控硅緩沖模(mo)塊(kuai)(kuai)(kuai)、直流(liu)隔(ge)離(li)模(mo)塊(kuai)(kuai)(kuai)和(he)(he)控制模(mo)塊(kuai)(kuai)(kuai),所述(shu)可控硅緩沖模(mo)塊(kuai)(kuai)(kuai)包(bao)括(kuo)(kuo)有雙(shuang)向(xiang)可控硅、第三(san)電(dian)(dian)阻和(he)(he)第二電(dian)(dian)容(rong),所述(shu)繼電(dian)(dian)器模(mo)塊(kuai)(kuai)(kuai)的(de)(de)(de)開關觸(chu)點的(de)(de)(de)另一(yi)端與雙(shuang)向(xiang)可控硅的(de)(de)(de)第一(yi)主(zhu)電(dian)(dian)極(ji)(ji)連接,所述(shu)雙(shuang)向(xiang)可控硅的(de)(de)(de)第二主(zhu)電(dian)(dian)極(ji)(ji)接地,所述(shu)雙(shuang)向(xiang)可控硅的(de)(de)(de)第一(yi)主(zhu)電(dian)(dian)極(ji)(ji)依次通(tong)過(guo)第三(san)電(dian)(dian)阻和(he)(he)第二電(dian)(dian)容(rong)接地,所述(shu)控制芯片(pian)的(de)(de)(de)第二輸出端依次通(tong)過(guo)控制模(mo)塊(kuai)(kuai)(kuai)和(he)(he)直流(liu)隔(ge)離(li)模(mo)塊(kuai)(kuai)(kuai)連接至雙(shuang)向(xiang)可控硅的(de)(de)(de)門極(ji)(ji)。

進一(yi)步(bu),所(suo)(suo)述(shu)直流隔離模塊(kuai)包括(kuo)有第(di)四電(dian)阻、第(di)三(san)電(dian)容和(he)第(di)四電(dian)容,所(suo)(suo)述(shu)第(di)三(san)電(dian)容的(de)一(yi)端(duan)(duan)連接(jie)至(zhi)雙向可控硅的(de)門(men)極,所(suo)(suo)述(shu)第(di)三(san)電(dian)容的(de)一(yi)端(duan)(duan)還分(fen)別通過(guo)第(di)三(san)電(dian)容和(he)第(di)四電(dian)阻接(jie)地,所(suo)(suo)述(shu)控制(zhi)芯(xin)片的(de)第(di)二(er)輸出端(duan)(duan)通過(guo)控制(zhi)模塊(kuai)連接(jie)至(zhi)第(di)三(san)電(dian)容的(de)另一(yi)端(duan)(duan)。

進一步,所(suo)述(shu)(shu)(shu)控制模塊包括(kuo)有PNP三極(ji)(ji)管(guan)、第(di)(di)五(wu)電(dian)阻(zu)(zu)(zu)、第(di)(di)六電(dian)阻(zu)(zu)(zu)、第(di)(di)五(wu)電(dian)容(rong)、第(di)(di)七(qi)電(dian)阻(zu)(zu)(zu)和第(di)(di)八(ba)(ba)電(dian)阻(zu)(zu)(zu),所(suo)述(shu)(shu)(shu)控制芯片的(de)(de)第(di)(di)二輸出端(duan)(duan)連(lian)(lian)接(jie)至第(di)(di)五(wu)電(dian)阻(zu)(zu)(zu)的(de)(de)一端(duan)(duan),所(suo)述(shu)(shu)(shu)第(di)(di)五(wu)電(dian)阻(zu)(zu)(zu)的(de)(de)另(ling)(ling)一端(duan)(duan)分(fen)別連(lian)(lian)接(jie)至第(di)(di)六電(dian)阻(zu)(zu)(zu)的(de)(de)一端(duan)(duan)和PNP三極(ji)(ji)管(guan)的(de)(de)基極(ji)(ji),所(suo)述(shu)(shu)(shu)PNP三極(ji)(ji)管(guan)的(de)(de)集電(dian)極(ji)(ji)連(lian)(lian)接(jie)至第(di)(di)七(qi)電(dian)阻(zu)(zu)(zu)的(de)(de)一端(duan)(duan),所(suo)述(shu)(shu)(shu)第(di)(di)七(qi)電(dian)阻(zu)(zu)(zu)的(de)(de)另(ling)(ling)一端(duan)(duan)分(fen)別連(lian)(lian)接(jie)至第(di)(di)三電(dian)容(rong)的(de)(de)另(ling)(ling)一端(duan)(duan)和第(di)(di)八(ba)(ba)電(dian)阻(zu)(zu)(zu)的(de)(de)一端(duan)(duan),所(suo)述(shu)(shu)(shu)第(di)(di)八(ba)(ba)電(dian)阻(zu)(zu)(zu)的(de)(de)另(ling)(ling)一端(duan)(duan)與第(di)(di)五(wu)電(dian)容(rong)的(de)(de)一端(duan)(duan)均(jun)接(jie)地(di),所(suo)述(shu)(shu)(shu)第(di)(di)五(wu)電(dian)容(rong)的(de)(de)另(ling)(ling)一端(duan)(duan)、PNP三極(ji)(ji)管(guan)的(de)(de)射極(ji)(ji)和第(di)(di)六電(dian)阻(zu)(zu)(zu)的(de)(de)另(ling)(ling)一端(duan)(duan)均(jun)連(lian)(lian)接(jie)高電(dian)平。

進一(yi)步,所(suo)(suo)(suo)述精(jing)(jing)密電(dian)(dian)阻(zu)(zu)(zu)的(de)一(yi)端(duan)接(jie)(jie)高電(dian)(dian)平,所(suo)(suo)(suo)述精(jing)(jing)密電(dian)(dian)阻(zu)(zu)(zu)的(de)另(ling)一(yi)端(duan)分別連(lian)接(jie)(jie)至(zhi)分壓電(dian)(dian)阻(zu)(zu)(zu)的(de)一(yi)端(duan)和精(jing)(jing)密NTC熱敏(min)電(dian)(dian)阻(zu)(zu)(zu)的(de)一(yi)端(duan),所(suo)(suo)(suo)述精(jing)(jing)密電(dian)(dian)阻(zu)(zu)(zu)的(de)精(jing)(jing)度不低于千分之(zhi)一(yi),所(suo)(suo)(suo)述第一(yi)電(dian)(dian)容(rong)(rong)的(de)一(yi)端(duan)與精(jing)(jing)密NTC熱敏(min)電(dian)(dian)阻(zu)(zu)(zu)的(de)另(ling)一(yi)端(duan)均接(jie)(jie)地,所(suo)(suo)(suo)述第一(yi)電(dian)(dian)容(rong)(rong)的(de)另(ling)一(yi)端(duan)和分壓電(dian)(dian)阻(zu)(zu)(zu)的(de)另(ling)一(yi)端(duan)連(lian)接(jie)(jie)并(bing)作為溫度檢測(ce)電(dian)(dian)路的(de)輸出(chu)端(duan)與控制芯片的(de)輸入端(duan)連(lian)接(jie)(jie)。

本(ben)實用新型的有益效(xiao)果(guo)是:本(ben)實用新型通過過零(ling)(ling)檢(jian)測電(dian)(dian)(dian)路檢(jian)測負載(zai)過零(ling)(ling)點(dian),同時(shi)結合(he)高精度溫度檢(jian)測電(dian)(dian)(dian)路,從而能夠(gou)實現控制(zhi)(zhi)芯(xin)片對繼(ji)電(dian)(dian)(dian)器閉合(he)和斷開的精確控制(zhi)(zhi),大(da)大(da)延長(chang)繼(ji)電(dian)(dian)(dian)器的使用壽(shou)命(ming);還采用可(ke)控硅緩(huan)沖電(dian)(dian)(dian)路吸收(shou)消(xiao)弧,避免繼(ji)電(dian)(dian)(dian)器開關次數過于(yu)頻(pin)繁導致壽(shou)命(ming)減少,適用于(yu)電(dian)(dian)(dian)熱水壺、咖(ka)啡機、飲(yin)料(liao)沖泡(pao)裝置等領域。

附圖說明

圖(tu)1為本實用(yong)新型結構框圖(tu);

圖(tu)2為(wei)本實(shi)用(yong)新型(xing)具體(ti)實(shi)施例電路原理圖(tu)。

具體實施方式

下面結合附圖對本實用新(xin)型的具體實施方式作進一步說明(ming):

參照圖1,一種液體加熱裝(zhuang)置的(de)(de)(de)(de)控溫(wen)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu),包(bao)括有控制(zhi)芯片(pian)(pian)、過零(ling)檢(jian)(jian)測(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)、繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)模塊(kuai)(kuai)(kuai)(kuai)、可(ke)(ke)控硅緩(huan)沖電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)和溫(wen)度(du)檢(jian)(jian)測(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu),所(suo)述(shu)(shu)(shu)過零(ling)檢(jian)(jian)測(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)(de)(de)輸(shu)(shu)入(ru)(ru)端(duan)用于接(jie)(jie)入(ru)(ru)交流電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)的(de)(de)(de)(de)零(ling)線(xian),所(suo)述(shu)(shu)(shu)過零(ling)檢(jian)(jian)測(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)(de)(de)輸(shu)(shu)出(chu)端(duan)連接(jie)(jie)至(zhi)控制(zhi)芯片(pian)(pian)的(de)(de)(de)(de)外部中斷輸(shu)(shu)入(ru)(ru)端(duan),所(suo)述(shu)(shu)(shu)控制(zhi)芯片(pian)(pian)的(de)(de)(de)(de)第(di)一輸(shu)(shu)出(chu)端(duan)連接(jie)(jie)至(zhi)繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)模塊(kuai)(kuai)(kuai)(kuai)的(de)(de)(de)(de)控制(zhi)端(duan),所(suo)述(shu)(shu)(shu)繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)模塊(kuai)(kuai)(kuai)(kuai)的(de)(de)(de)(de)開關觸點的(de)(de)(de)(de)一端(duan)用于接(jie)(jie)入(ru)(ru)交流電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)的(de)(de)(de)(de)火線(xian),所(suo)述(shu)(shu)(shu)繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)模塊(kuai)(kuai)(kuai)(kuai)的(de)(de)(de)(de)開關觸點的(de)(de)(de)(de)另(ling)一端(duan)與可(ke)(ke)控硅緩(huan)沖電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)連接(jie)(jie),所(suo)述(shu)(shu)(shu)控制(zhi)芯片(pian)(pian)的(de)(de)(de)(de)第(di)二輸(shu)(shu)出(chu)端(duan)連接(jie)(jie)至(zhi)可(ke)(ke)控硅緩(huan)沖電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)(de)(de)控制(zhi)端(duan),所(suo)述(shu)(shu)(shu)溫(wen)度(du)檢(jian)(jian)測(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)(de)(de)輸(shu)(shu)出(chu)端(duan)連接(jie)(jie)至(zhi)控制(zhi)芯片(pian)(pian)的(de)(de)(de)(de)輸(shu)(shu)入(ru)(ru)端(duan)。

參照圖2,進一(yi)(yi)(yi)(yi)(yi)步作為(wei)(wei)優選的(de)(de)(de)實施方式,所(suo)(suo)述(shu)過零(ling)檢(jian)測(ce)電(dian)(dian)(dian)路包括(kuo)有(you)第(di)(di)(di)一(yi)(yi)(yi)(yi)(yi)分(fen)壓模塊(kuai)和(he)(he)(he)第(di)(di)(di)一(yi)(yi)(yi)(yi)(yi)輸(shu)出(chu)(chu)模塊(kuai);所(suo)(suo)述(shu)第(di)(di)(di)一(yi)(yi)(yi)(yi)(yi)分(fen)壓模塊(kuai)包括(kuo)有(you)第(di)(di)(di)一(yi)(yi)(yi)(yi)(yi)電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)、第(di)(di)(di)二(er)電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)RX7和(he)(he)(he)第(di)(di)(di)一(yi)(yi)(yi)(yi)(yi)二(er)極(ji)(ji)(ji)管D6,所(suo)(suo)述(shu)第(di)(di)(di)一(yi)(yi)(yi)(yi)(yi)電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)即串(chuan)聯(lian)的(de)(de)(de)RX3和(he)(he)(he)RX4,所(suo)(suo)述(shu)第(di)(di)(di)一(yi)(yi)(yi)(yi)(yi)電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)的(de)(de)(de)一(yi)(yi)(yi)(yi)(yi)端(duan)(duan)(duan)(duan)作為(wei)(wei)過零(ling)檢(jian)測(ce)電(dian)(dian)(dian)路的(de)(de)(de)輸(shu)入端(duan)(duan)(duan)(duan),所(suo)(suo)述(shu)第(di)(di)(di)一(yi)(yi)(yi)(yi)(yi)電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)的(de)(de)(de)另(ling)(ling)一(yi)(yi)(yi)(yi)(yi)端(duan)(duan)(duan)(duan)分(fen)別(bie)連(lian)接至(zhi)(zhi)第(di)(di)(di)二(er)電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)RX7的(de)(de)(de)一(yi)(yi)(yi)(yi)(yi)端(duan)(duan)(duan)(duan)和(he)(he)(he)第(di)(di)(di)一(yi)(yi)(yi)(yi)(yi)二(er)極(ji)(ji)(ji)管D6的(de)(de)(de)陰極(ji)(ji)(ji),所(suo)(suo)述(shu)第(di)(di)(di)二(er)電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)RX7的(de)(de)(de)另(ling)(ling)一(yi)(yi)(yi)(yi)(yi)端(duan)(duan)(duan)(duan)和(he)(he)(he)第(di)(di)(di)一(yi)(yi)(yi)(yi)(yi)二(er)極(ji)(ji)(ji)管D6的(de)(de)(de)陽極(ji)(ji)(ji)接地;所(suo)(suo)述(shu)第(di)(di)(di)一(yi)(yi)(yi)(yi)(yi)輸(shu)出(chu)(chu)模塊(kuai)包括(kuo)有(you)NPN三極(ji)(ji)(ji)管Q1、上(shang)拉電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)R10和(he)(he)(he)輸(shu)出(chu)(chu)電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)R11,所(suo)(suo)述(shu)第(di)(di)(di)一(yi)(yi)(yi)(yi)(yi)電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)的(de)(de)(de)另(ling)(ling)一(yi)(yi)(yi)(yi)(yi)端(duan)(duan)(duan)(duan)還連(lian)接至(zhi)(zhi)NPN三極(ji)(ji)(ji)管Q1的(de)(de)(de)基極(ji)(ji)(ji),所(suo)(suo)述(shu)NPN三極(ji)(ji)(ji)管Q1的(de)(de)(de)集(ji)電(dian)(dian)(dian)極(ji)(ji)(ji)分(fen)別(bie)連(lian)接至(zhi)(zhi)上(shang)拉電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)R10的(de)(de)(de)一(yi)(yi)(yi)(yi)(yi)端(duan)(duan)(duan)(duan)和(he)(he)(he)輸(shu)出(chu)(chu)電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)R11的(de)(de)(de)一(yi)(yi)(yi)(yi)(yi)端(duan)(duan)(duan)(duan),所(suo)(suo)述(shu)上(shang)拉電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)R10的(de)(de)(de)另(ling)(ling)一(yi)(yi)(yi)(yi)(yi)端(duan)(duan)(duan)(duan)接高(gao)電(dian)(dian)(dian)平,所(suo)(suo)述(shu)輸(shu)出(chu)(chu)電(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)(zu)(zu)(zu)R11的(de)(de)(de)另(ling)(ling)一(yi)(yi)(yi)(yi)(yi)端(duan)(duan)(duan)(duan)作為(wei)(wei)過零(ling)檢(jian)測(ce)電(dian)(dian)(dian)路的(de)(de)(de)輸(shu)出(chu)(chu)端(duan)(duan)(duan)(duan),所(suo)(suo)述(shu)NPN三極(ji)(ji)(ji)管Q1的(de)(de)(de)射極(ji)(ji)(ji)接地。

如圖2所示,過零檢測(ce)電路(lu)的(de)(de)第一(yi)分壓(ya)(ya)(ya)模(mo)塊用于(yu)將輸入的(de)(de)交流(liu)電壓(ya)(ya)(ya)從高壓(ya)(ya)(ya)轉換成小于(yu)1V的(de)(de)驅動(dong)電壓(ya)(ya)(ya),驅動(dong)第一(yi)輸出模(mo)塊的(de)(de)NPN極管Q1導通,從而輸出低電平至(zhi)控(kong)制(zhi)芯片的(de)(de)外(wai)部中斷(duan)輸入端INT0,用于(yu)判斷(duan)輸入交流(liu)電壓(ya)(ya)(ya)的(de)(de)過零點;其中控(kong)制(zhi)芯片可(ke)采用如型號為(wei)SH79F1612A的(de)(de)單片機。

在本(ben)實用新型具(ju)體實施例(li)電(dian)(dian)(dian)(dian)路具(ju)體工(gong)作時(shi),控制芯片通過(guo)過(guo)零檢測電(dian)(dian)(dian)(dian)路負(fu)載電(dian)(dian)(dian)(dian)壓過(guo)零點(dian),通過(guo)PID處理得到繼(ji)電(dian)(dian)(dian)(dian)器線圈掉電(dian)(dian)(dian)(dian)到繼(ji)電(dian)(dian)(dian)(dian)器觸(chu)點(dian)開(kai)關斷(duan)開(kai)的時(shi)間,在負(fu)載電(dian)(dian)(dian)(dian)壓過(guo)零點(dian)斷(duan)開(kai)繼(ji)電(dian)(dian)(dian)(dian)器,從而(er)大大延長繼(ji)電(dian)(dian)(dian)(dian)器的使(shi)用壽命(ming)。

參(can)照圖2,進一步作為優選的(de)(de)實施方式,所(suo)述可(ke)控(kong)(kong)(kong)(kong)硅(gui)緩(huan)沖(chong)電(dian)路包括有可(ke)控(kong)(kong)(kong)(kong)硅(gui)緩(huan)沖(chong)模(mo)塊(kuai)、直(zhi)流隔(ge)離(li)模(mo)塊(kuai)和控(kong)(kong)(kong)(kong)制(zhi)模(mo)塊(kuai),所(suo)述可(ke)控(kong)(kong)(kong)(kong)硅(gui)緩(huan)沖(chong)模(mo)塊(kuai)包括有雙(shuang)向(xiang)(xiang)可(ke)控(kong)(kong)(kong)(kong)硅(gui)TR1、第三(san)電(dian)阻(zu)RX9和第二(er)(er)電(dian)容(rong)C12,所(suo)述繼電(dian)器模(mo)塊(kuai)的(de)(de)開(kai)關觸點的(de)(de)另一端與雙(shuang)向(xiang)(xiang)可(ke)控(kong)(kong)(kong)(kong)硅(gui)TR1的(de)(de)第一主(zhu)電(dian)極(ji)A2連接(jie)(jie),所(suo)述雙(shuang)向(xiang)(xiang)可(ke)控(kong)(kong)(kong)(kong)硅(gui)TR1的(de)(de)第二(er)(er)主(zhu)電(dian)極(ji)A1接(jie)(jie)地,所(suo)述雙(shuang)向(xiang)(xiang)可(ke)控(kong)(kong)(kong)(kong)硅(gui)TR1的(de)(de)第一主(zhu)電(dian)極(ji)A2依次(ci)通(tong)過(guo)第三(san)電(dian)阻(zu)RX9和第二(er)(er)電(dian)容(rong)C12接(jie)(jie)地,所(suo)述控(kong)(kong)(kong)(kong)制(zhi)芯片IC2的(de)(de)第二(er)(er)輸(shu)出端TRIAC依次(ci)通(tong)過(guo)控(kong)(kong)(kong)(kong)制(zhi)模(mo)塊(kuai)和直(zhi)流隔(ge)離(li)模(mo)塊(kuai)連接(jie)(jie)至雙(shuang)向(xiang)(xiang)可(ke)控(kong)(kong)(kong)(kong)硅(gui)TR1的(de)(de)門極(ji)G。

在繼電(dian)器(qi)(qi)觸電(dian)斷開(kai)時會產生(sheng)高壓(ya)脈沖,由于(yu)增加了上述可控(kong)硅緩沖電(dian)路(lu),該電(dian)路(lu)可實現吸(xi)收消弧的作用,即吸(xi)收繼電(dian)器(qi)(qi)觸電(dian)斷開(kai)時的高壓(ya)脈沖,從而延長繼電(dian)器(qi)(qi)的使用壽命(ming)。

參照圖2,進一(yi)步作(zuo)為優選的(de)(de)(de)實施方(fang)式(shi),所(suo)述(shu)直流隔(ge)離模(mo)(mo)塊(kuai)包括有第(di)(di)(di)四(si)電(dian)阻(zu)R53、第(di)(di)(di)三(san)電(dian)容(rong)C10和第(di)(di)(di)四(si)電(dian)容(rong)C11,所(suo)述(shu)第(di)(di)(di)三(san)電(dian)容(rong)C10的(de)(de)(de)一(yi)端(duan)連接(jie)至雙(shuang)向可控硅TR1的(de)(de)(de)門極G,所(suo)述(shu)第(di)(di)(di)三(san)電(dian)容(rong)C10的(de)(de)(de)一(yi)端(duan)還分別通(tong)過第(di)(di)(di)三(san)電(dian)容(rong)C11和第(di)(di)(di)四(si)電(dian)阻(zu)R53接(jie)地,所(suo)述(shu)控制(zhi)芯片IC2的(de)(de)(de)第(di)(di)(di)二(er)輸(shu)出端(duan)TRIAC通(tong)過控制(zhi)模(mo)(mo)塊(kuai)連接(jie)至第(di)(di)(di)三(san)電(dian)容(rong)C10的(de)(de)(de)另(ling)一(yi)端(duan)。

參照圖2,進一(yi)步作(zuo)為優選的(de)(de)(de)(de)實施方式,所述(shu)控制模(mo)塊包括(kuo)有PNP三極管(guan)Q3、第(di)(di)五(wu)(wu)(wu)(wu)電阻(zu)(zu)R15、第(di)(di)六(liu)電阻(zu)(zu)R14、第(di)(di)五(wu)(wu)(wu)(wu)電容(rong)C9、第(di)(di)七(qi)電阻(zu)(zu)R55和第(di)(di)八電阻(zu)(zu)R54,所述(shu)控制芯片IC2的(de)(de)(de)(de)第(di)(di)二輸出端(duan)TRIAC連接至(zhi)第(di)(di)五(wu)(wu)(wu)(wu)電阻(zu)(zu)R15的(de)(de)(de)(de)一(yi)端(duan),所述(shu)第(di)(di)五(wu)(wu)(wu)(wu)電阻(zu)(zu)R15的(de)(de)(de)(de)另(ling)(ling)一(yi)端(duan)分別連接至(zhi)第(di)(di)六(liu)電阻(zu)(zu)R14的(de)(de)(de)(de)一(yi)端(duan)和PNP三極管(guan)Q3的(de)(de)(de)(de)基(ji)極,所述(shu)PNP三極管(guan)Q3的(de)(de)(de)(de)集(ji)電極連接至(zhi)第(di)(di)七(qi)電阻(zu)(zu)R55的(de)(de)(de)(de)一(yi)端(duan),所述(shu)第(di)(di)七(qi)電阻(zu)(zu)R55的(de)(de)(de)(de)另(ling)(ling)一(yi)端(duan)分別連接至(zhi)第(di)(di)三電容(rong)C10的(de)(de)(de)(de)另(ling)(ling)一(yi)端(duan)和第(di)(di)八電阻(zu)(zu)R54的(de)(de)(de)(de)一(yi)端(duan),所述(shu)第(di)(di)八電阻(zu)(zu)R54的(de)(de)(de)(de)另(ling)(ling)一(yi)端(duan)與第(di)(di)五(wu)(wu)(wu)(wu)電容(rong)C9的(de)(de)(de)(de)一(yi)端(duan)均(jun)接地,所述(shu)第(di)(di)五(wu)(wu)(wu)(wu)電容(rong)C9的(de)(de)(de)(de)另(ling)(ling)一(yi)端(duan)、PNP三極管(guan)Q3的(de)(de)(de)(de)射極和第(di)(di)六(liu)電阻(zu)(zu)R14的(de)(de)(de)(de)另(ling)(ling)一(yi)端(duan)均(jun)連接+5V高電平。

參照圖2,進一(yi)(yi)(yi)步作為(wei)優(you)選(xuan)的(de)(de)(de)實施方式,所(suo)(suo)述(shu)溫度檢測電(dian)(dian)(dian)(dian)(dian)路包括有精密電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)RN1、分(fen)壓電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)RN2、第(di)一(yi)(yi)(yi)電(dian)(dian)(dian)(dian)(dian)容C8和精密NTC熱敏電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)CN1,所(suo)(suo)述(shu)精密電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)RN1的(de)(de)(de)一(yi)(yi)(yi)端(duan)接+5V高電(dian)(dian)(dian)(dian)(dian)平,所(suo)(suo)述(shu)精密電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)RN1的(de)(de)(de)另(ling)(ling)一(yi)(yi)(yi)端(duan)分(fen)別連接至分(fen)壓電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)RN2的(de)(de)(de)一(yi)(yi)(yi)端(duan)和精密NTC熱敏電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)CN1的(de)(de)(de)一(yi)(yi)(yi)端(duan),所(suo)(suo)述(shu)精密電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)RN1的(de)(de)(de)精度不低于千分(fen)之一(yi)(yi)(yi)。所(suo)(suo)述(shu)第(di)一(yi)(yi)(yi)電(dian)(dian)(dian)(dian)(dian)容C8的(de)(de)(de)一(yi)(yi)(yi)端(duan)與精密NTC熱敏電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)CN1的(de)(de)(de)另(ling)(ling)一(yi)(yi)(yi)端(duan)均接地,所(suo)(suo)述(shu)第(di)一(yi)(yi)(yi)電(dian)(dian)(dian)(dian)(dian)容C8的(de)(de)(de)另(ling)(ling)一(yi)(yi)(yi)端(duan)和分(fen)壓電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)RN2的(de)(de)(de)另(ling)(ling)一(yi)(yi)(yi)端(duan)連接并(bing)作為(wei)溫度檢測電(dian)(dian)(dian)(dian)(dian)路的(de)(de)(de)輸出端(duan)與控制芯片(pian)IC2的(de)(de)(de)輸入端(duan)NTC-AD連接。

溫度檢測電(dian)路中采(cai)用精(jing)密電(dian)阻(zu)和精(jing)密NTC熱敏電(dian)阻(zu)保證了溫度測量的精(jing)確性,若配(pei)合(he)PID閉環控制算法,可進(jin)一步(bu)實現液體加熱裝置的精(jing)準控溫。

以(yi)(yi)上是(shi)對本實(shi)用(yong)新(xin)型(xing)(xing)(xing)的較佳實(shi)施進行了具體說明(ming),但本實(shi)用(yong)新(xin)型(xing)(xing)(xing)創造并不限于所述實(shi)施例(li),熟悉(xi)本領(ling)域的技術(shu)人員在(zai)(zai)不違背本實(shi)用(yong)新(xin)型(xing)(xing)(xing)精(jing)神的前提(ti)下(xia)還(huan)可以(yi)(yi)作出(chu)種(zhong)種(zhong)的等(deng)同(tong)變換(huan)或替換(huan),這些等(deng)同(tong)的變形(xing)或替換(huan)均包(bao)含在(zai)(zai)本申請(qing)權利要求(qiu)所限定的范(fan)圍內。

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