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　　分(fen)(fen)、集(ji)(ji)水(shui)器(qi)(qi)是由(you)分(fen)(fen)水(shui)器(qi)(qi)和(he)集(ji)(ji)水(shui)器(qi)(qi)組合而成的(de)(de)水(shui)流(liu)(liu)(liu)量(liang)分(fen)(fen)配(pei)和(he)匯集(ji)(ji)裝置(zhi)。通常在地(di)(di)(di)面(mian)供(gong)(gong)(gong)暖(nuan)區域中(zhong)，需要(yao)(yao)將大(da)面(mian)積細(xi)分(fen)(fen)成小(xiao)區塊控制(zhi)，或(huo)是一(yi)套(tao)住宅中(zhong)，有多個功能(neng)房(fang)間，需要(yao)(yao)分(fen)(fen)別(bie)控制(zhi)。同(tong)(tong)時，地(di)(di)(di)暖(nuan)系統受水(shui)力特征影(ying)響(xiang)，地(di)(di)(di)暖(nuan)盤管限制(zhi)在一(yi)定的(de)(de)長度內(nei)。這就需要(yao)(yao)將同(tong)(tong)一(yi)地(di)(di)(di)面(mian)供(gong)(gong)(gong)暖(nuan)區域或(huo)同(tong)(tong)一(yi)套(tao)住宅的(de)(de)各(ge)(ge)供(gong)(gong)(gong)暖(nuan)房(fang)間分(fen)(fen)成多個環路，而每(mei)個環路又分(fen)(fen)別(bie)需要(yao)(yao)進(jin)行關(guan)斷或(huo)流(liu)(liu)(liu)量(liang)調(diao)節。分(fen)(fen)、集(ji)(ji)水(shui)器(qi)(qi)在低溫熱水(shui)地(di)(di)(di)面(mian)輻(fu)射供(gong)(gong)(gong)暖(nuan)系統中(zhong)就起著(zhu)這樣的(de)(de)作用。它一(yi)方面(mian)將供(gong)(gong)(gong)暖(nuan)主(zhu)干(gan)管的(de)(de)水(shui)按(an)建筑(zhu)供(gong)(gong)(gong)暖(nuan)需要(yao)(yao)進(jin)行流(liu)(liu)(liu)量(liang)分(fen)(fen)配(pei)，保證各(ge)(ge)區域分(fen)(fen)支環路的(de)(de)流(liu)(liu)(liu)量(liang)滿足供(gong)(gong)(gong)暖(nuan)負荷需要(yao)(yao)。同(tong)(tong)時，還(huan)要(yao)(yao)將各(ge)(ge)分(fen)(fen)支回路的(de)(de)水(shui)流(liu)(liu)(liu)匯集(ji)(ji)，并(bing)輸(shu)入供(gong)(gong)(gong)暖(nuan)回水(shui)主(zhu)干(gan)管中(zhong)，實現循環運(yun)行。另一(yi)方面(mian)，由(you)于(yu)建筑(zhu)各(ge)(ge)功能(neng)區域（房(fang)間）需要(yao)(yao)按(an)需供(gong)(gong)(gong)熱。為(wei)便于(yu)調(diao)節控制(zhi)，分(fen)(fen)水(shui)器(qi)(qi)和(he)集(ji)(ji)水(shui)器(qi)(qi)各(ge)(ge)分(fen)(fen)支環路配(pei)置(zhi)了閥門(men)，閥門(men)承擔流(liu)(liu)(liu)量(liang)分(fen)(fen)配(pei)和(he)調(diao)節任(ren)務。地(di)(di)(di)暖(nuan)結(jie)構系統為(wei)暗埋(mai)式(shi)供(gong)(gong)(gong)暖(nuan)末端，其大(da)部分(fen)(fen)結(jie)構都(dou)埋(mai)在混(hun)凝土結(jie)構層里，只有分(fen)(fen)集(ji)(ji)水(shui)器(qi)(qi)露出(chu)在外面(mian)。作為(wei)地(di)(di)(di)暖(nuan)控制(zhi)的(de)(de)關(guan)鍵部件，其作用是十分(fen)(fen)重要(yao)(yao)的(de)(de)。