饮水机，的工作电路如图所示，S是一个温度控制开关，当水温升到一定温度时，会自动处于保温状态R0是加热电 如图所示是家用饮水机的工作原理电路，，其中S是温度控制开关，...
\uff082013?\u5357\u901a\uff09\u5982\u56fe\u6240\u793a\u662f\u5bb6\u7528\u996e\u6c34\u673a\u7684\u5de5\u4f5c\u539f\u7406\u7535\u8def\uff0c\u5176\u4e2dS\u662f\u6e29\u5ea6\u63a7\u5236\u5f00\u5173\uff0c\u5f53\u6c34\u6e29\u5347\u9ad8\u5230\u4e00\u5b9a\u6e29\u5ea6\u65f6\uff0c\u996e\u6c34\uff081\uff09\u7531\u7535\u8def\u56fe\u53ef\u77e5\uff0c\u5f53\u5f00\u5173\u5904\u4e8e\u201c2\u201d\u6321\u65f6\uff0c\u53ea\u6709\u7535\u963bR0\u63a5\u5165\u7535\u8def\uff0c\u7535\u963bR\u88ab\u77ed\u8def\uff0c\u901a\u8fc7\u7535\u963bR\u7684\u7535\u6d41\u4e3a\u96f6\uff0c\u901a\u8fc7\u7535\u963bR0\u7684\u7535\u6d41I0=UR0=220V55\u03a9=4A\uff1b\uff082\uff09\u7531\u7535\u8def\u56fe\u53ef\u77e5\uff0c\u5f00\u5173\u7f6e\u4e8e\u201c1\u201d\u65f6\uff0c\u4e24\u7535\u963b\u4e32\u8054\u63a5\u5165\u7535\u8def\uff0c\u996e\u6c34\u673a\u7684\u603b\u529f\u7387P1=U2R+R0=(220V)255\u03a9+2365\u03a9=20W\uff0c\u5f53\u5f00\u5173\u5904\u4e8e\u201c2\u201d\u6321\u65f6\uff0c\u53ea\u6709\u7535\u963bR0\u63a5\u5165\u7535\u8def\uff0cP2=U2R0=(220V)255\u03a9=880W\uff1b\uff083\uff09\u7531\u7535\u8def\u56fe\u53ef\u77e5\uff0c\u5f00\u5173\u7f6e\u4e8e\u201c1\u201d\u65f6\uff0c\u4e24\u7535\u963b\u4e32\u8054\u63a5\u5165\u7535\u8def\uff0c\u6b64\u65f6\u7535\u8def\u603b\u7535\u963b\u6700\u5927\uff0c\u7531\u7535\u529f\u7387\u516c\u5f0fP=U2R\u53ef\u77e5\uff0c\u5728\u7535\u6e90\u7535\u538bU\u4e00\u5b9a\u65f6\uff0c\u7535\u963bR\u8d8a\u5927\uff0c\u7535\u529f\u7387\u8d8a\u5c0f\uff0c\u6e29\u5ea6\u8d8a\u4f4e\uff0c\u996e\u6c34\u673a\u5904\u4e8e\u4fdd\u6e29\u72b6\u6001\uff0e\u7b54\uff1a\uff081\uff09\u5f53\u5f00\u5173S\u5904\u4e8e\u201c2\u201d\u6321\u65f6\uff0c\u901a\u8fc7\u7535\u963bR\u7684\u7535\u6d41\u4e3a\u96f6\uff0c\u901a\u8fc7R0\u7684\u7535\u6d41\u4e3a4A\uff1b\uff082\uff09\u5f53\u5f00\u5173S\u5904\u4e8e\u201c1\u201d\u6321\u65f6\u996e\u6c34\u673a\u7684\u603b\u529f\u7387\u4e3a20W\uff0c\u5f00\u5173\u5904\u4e8e\u201c2\u201d\u6863\u65f6\uff0c\u996e\u6c34\u673a\u7684\u603b\u529f\u7387\u4e3a880W\uff1b\uff083\uff09\u5f53\u5f00\u5173S\u5904\u4e8e\u201c1\u201d\u6321\u65f6\uff0c\u7535\u8def\u7535\u963b\u6700\u5927\uff0c\u996e\u6c34\u673a\u529f\u7387\u5c0f\uff0c\u5904\u4e8e\u4fdd\u6e29\u72b6\u6001\uff0e
75\u74e6\uff0c125\u74e6
r 的阻值与保温无关,只是一个指示灯提取电压电阻,应该在1兆以上是2.2K欧
绛旓細锛1锛夊綋S鎺鏃讹紝涓ょ數闃讳覆鑱旓紱褰揝鎺鏃锛岀數璺涓篟 1 鐨勭畝鍗曠數璺牴鎹甀= U R 鍜孭=I 2 R鍙煡锛歋鎺鏃讹紝鐢佃矾涓數闃绘渶澶с佺數娴佹渶灏忥紝鐢靛姛鐜囨渶灏锛岄ギ姘存満澶勪簬淇濇俯鐘舵锛孲鎺鏃讹紝鐢佃矾涓數闃绘渶灏忋佺數娴佹渶澶э紝鐢靛姛鐜囨渶澶э紝楗按鏈哄浜庡姞鐑姸鎬侊紟锛2锛変繚娓╂椂锛屼袱鐢甸樆涓茶仈锛岀數璺腑鐨勭數娴両=...
绛旓細R鐨勭數鍔熺巼P=550W锛孷=220v锛孖=P/V=2.5A锛屼繚娓╂椂鍙戠儹鏉縍鐨勫姛鐜囨槸姝ｅ父宸ヤ綔鏃跺姛鐜囩殑0.1鍊嶏紝涔熷氨鏄數娴両=0.25A锛屾牴鎹濮嗗畾寰嬶紝鐢甸樆鐨勯樆鍊糝=880娆у锛屼絾鐢甸樆鐨勫姛鐜嘝=55W銆傞噰鐢ㄥ彲鎺х鏉ユ帶鍒舵瘮鐢ㄧ數闃昏鐜板疄寰堝銆
绛旓細鈶1.5kg锛屸懙 鈶2.5A锛 6.6脳10 5 J 锛屸憽5.04脳10 5 J 锛屸憿76.4% 锛屸懚1100惟 鈶存按鐨勮川閲忥細 =1.0脳10 3 Kg / m 3 脳1.5脳10 -3 m 3 =1.5kg鈶甸氳繃楗按鏈虹殑鐢垫祦鏄細 楗按鏈烘秷鑰楃殑鐢佃兘鏄細 姘村惛鏀剁殑鐑噺鏄細 楗按鏈虹殑鏁堢巼鏄細 锛3锛塕 2 鐨勯樆鍊兼槸锛
绛旓細锛1锛夌數璺腑淇濋櫓涓濇帴鍦ㄧ伀绾夸笂锛孉鎺ョ殑鏄浂绾匡紝B鎺ョ殑鏄伀绾匡紝C鏄帴鍦扮嚎锛涗笁鑴氭彃澶寸殑鎺ユ硶鏄滃乏闆跺彸鐏腑鎺ュ湴鈥濓紝鏁匔搴旀帴鍦ㄧ敳鑴氫笂锛涳紙2锛夌敱锛歅=U2R鍙煡锛岀數璺涓數闃昏秺澶э紝鐢靛姛鐜囪秺灏忥紱鍗砇1銆丷2涓茶仈鏃锛岄ギ姘存満鐨鍔熺巼灏忔椂淇濇俯鐘舵侊紝鏁呬繚娓╂椂鎸囩ず鐏疞2浜紱锛3锛夊綋寮鍏砈1涓庡彸渚ф帴瑙︽椂锛岀數璺负鍙湁...
绛旓細鎴戠煡閬撹繖閬撻銆楗按鏈鍔犵儹鏃舵秷鑰楃殑鐢佃兘锛歐=Pt=550W脳15脳60s=4.95脳105J锛涘綋S0鏂紑鏃锛岀數璺涓彧鏈塕2锛屾诲姛鐜囪緝灏忥紝涓轰繚娓╃姸鎬侊紝R2=$\frac{{U}^{2}}{{P}_{2}}$=$\frac{{锛220V锛墋^{2}}{44W}$=1100惟锛庢秷鑰楃殑鐢佃兘鏄495000 R2 鐨勭數闃绘槸1100惟 瀵瑰惂锛
绛旓細鐢佃矾涓殑鍔熺巼鏈澶э紝鐑ギ姘存満澶勪簬鍔犵儹鐘舵侊紱锛2锛夌敱琛ㄦ牸鏁版嵁鍙煡锛岄ギ姘存満鐨鍔犵儹鍔熺巼涓450W锛屽伐浣2min娑堣楃殑鐢佃兘锛歐=P鍔犵儹t=450W脳2脳60s=5.4脳104J锛涳紙3锛夌敱琛ㄦ牸鏁版嵁鍙煡锛岄ギ姘存満鐨勪繚娓╁姛鐜囦负44W锛屾牴鎹甈=UI鍙緱閫氳繃R2鐨勭數娴侊細I=P淇濇俯U=44W220V=0.2A锛庣瓟锛氾紙1锛変繚娓╋紱鍔犵儹锛涳紙2锛夐ギ姘存満鍦...
绛旓細(1)S2鏄數婧愬紑鍏筹紝鍙瀹冩墦寮锛岄ギ姘存満灏辫偗瀹氬湪宸ヤ綔锛堝姞鐑垨淇濇俯锛锛孲1鏄俯搴﹁嚜鍔ㄦ帶鍒跺紑鍏筹紝鐢垫簮寮鍏虫墦寮鏃讹紝鎵闇鍔犵儹鐨勬按锛屾湭杈惧埌鎵瑕佹眰娓╁害锛屽浜庡姞鐑姸鎬侊紙鍔熺巼涓500W锛夛紱姘村姞鐑殑姘磋揪鍒版墍瑕佹眰鐨勬俯搴﹀氨浼氳烦闂革紝楗按鏈哄浜庝繚娓╃姸鎬侊紙鍔熺巼涓10W锛夈傦紙2锛変笉娓呬綘鍝釜鏄繚娓╃數闃汇佸姞鐑數闃伙紝棰勬兂浣犵殑R1鏄...
绛旓細褰S涓巄鎺ヨ繘锛屾槸R1涓庡彂鐑澘R涓茶仈锛屽綋S涓巄鎺ヨ繎鏃讹紝R1琚煭璺紝鐢ㄥ叕寮廟=U²/P鍗冲彲姹傚嚭R鐨勭數闃诲 鐢╫.1P*R鍐嶅彇鏍瑰彿鍗冲彲寰桼鐨勭數鍘婾锛屽啀鐢ㄥ叕寮廔=U/R鍙緱鐢垫祦I 鐢紙220-U锛/I鍗冲彲寰桼1鐨勫
绛旓細锛1锛夌孩锛岄粍 锛2锛462惟
绛旓細褰撳紑鍏冲湪b鏃锛岀數璺涓彧鏈塕宸ヤ綔锛鍔熺巼鏄550W锛屾嵁锛歅=U²/R 寰楋細R锛漊²/p锛220脳220/550锛88娆 褰撳紑鍏虫帴a鏃讹紝涓や釜鐢甸樆涓茶仈锛屼笖R2鐨勫姛鐜囦负鍘熸潵鐨0.1鍊嶏紝鍗筹細P'锛0.1脳550锛55W 鎹細P=I²R 寰楋細I锛濃垰P/R鈮0.79A 鏍规嵁娆у瀹氬緥锛欼锛漊/(R+R2)0.79锛220/(88锛婻2)...
