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通常制冷系統(tǒng)以壓縮機(jī)和膨脹閥為界,根據(jù)壓力的不同,可以分為高壓側(cè)和低壓側(cè)兩部分。
結(jié)構(gòu)簡(jiǎn)圖
制冷系統(tǒng)組成及運(yùn)行原理動(dòng)畫(huà)
一、高壓側(cè)(HIGH SIDE)
大致相當(dāng)于20個(gè)大氣壓的高溫高壓氣體(300 psi of Hot High Pressure Gas)
換算:1個(gè)標(biāo)準(zhǔn)大氣壓=14.7Psi=1.013bar=0.1013MPa
標(biāo)準(zhǔn)大氣壓(Standard atmospheric pressure)
1、壓縮機(jī)
COMPRESSOR
將低壓氣體壓縮為高壓氣體。
壓縮機(jī)
2、冷凝器(CONDENSER)
冷凝器是一個(gè)用于將制冷劉所含熱量釋放、并將制冷劑由氣態(tài)轉(zhuǎn)變成液態(tài)的熱交換器。將高溫高壓的氣態(tài)制冷劑變成高壓液態(tài)制劑。
一種結(jié)構(gòu)的冷凝器
實(shí)物解剖圖
片式冷凝器結(jié)構(gòu)示意圖
實(shí)物圖
3、貯液干燥器(RECEIVER DRIER)
儲(chǔ)存、緩沖、干燥和過(guò)濾。
貯液干燥器結(jié)構(gòu)圖
4、膨脹閥(EXPANSION VALVE)
節(jié)流降壓、控制過(guò)熱度、調(diào)節(jié)流量、防止壓縮機(jī)液擊。
一種熱力膨脹閥解剖圖
P1+P4 = P2+P3
P1 = Bulb Pressure (Opening Force)
P2 = Evaporator Pressure (Closing Force)
P3 = Superheat Spring Pressure (Closing Force)
P4 = Liquid Pressure (Opening Force)
一種電子膨脹閥解剖圖
一種電子膨脹閥外觀
The compressor and the electronic expansion valve (EEV) are integrated in a control loop. When the cold air requirement changes, the EEV takes on the task of precision adjustment by varying the degree of opening within a few seconds. If this precision control is no longer sufficient, the cooling capacity is adapted by way of the compressor speed. Due to the short control response times, the system always works in the optimum operating range, making it even more efficient.
二、低壓側(cè)(LOW SIDE)
17-30PSI of Low Pressure Gas
1個(gè)標(biāo)準(zhǔn)大氣壓=14.7Psi=1.013bar=0.1013MPa
5、蒸發(fā)器(EVAPORATOR)
吸收空氣中的熱量(降溫),干燥空氣(降濕)。
蒸發(fā)器