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在氟里昂制冷装置中,往往采用具有回热热交换的制冷循环,其目的有: 1.提高循环的经济性,使循环制冷量和单位功率制冷量获得增加; 2.防止节流前液体因管道阻力而发生汽体的闪发,保证节流阀的正常工作,减少无效蒸汽量; 3.将由蒸发器中由于负荷突然改变等原因而挟带出来的液滴在换热器中完全蒸发,避免液体进入汽缸而破坏压缩机的正常润滑,甚至产生液击现象,既保证了压缩机的正常运行,又使冷量得到回收;
In Freon refrigerators, refrigeration cycles with regenerative heat exchange are often used, with the following objectives: 1. Increasing the economy of the cycle by increasing the circulating cooling capacity and the unit power cooling capacity; 2. Preventing the liquid factor before throttling Pipeline resistance and the flash of gas to ensure the normal operation of the throttle valve to reduce the amount of invalid steam; 3. The evaporator will be brought out due to sudden changes in load and other reasons entrained droplets in the heat exchanger completely evaporated, Avoid liquid into the cylinder and destroy the normal lubrication of the compressor, and even liquid-hammer phenomenon, both to ensure the normal operation of the compressor, but also to get cold recovery;