螺杆式空气源热泵机组压缩机油位试验研究

Experimental investigation on compressor oil level of screw air source heat pump

分析压缩机吸气回液、外置油分离器油分离效率对螺杆式空气源热泵机组压缩机油位的影响,提出改进翅片换热器分液、优化气液分离器结构、改善油分离器分离方式等改进措施,并对螺杆式空气源冷(热)水机组进行试验。结果表明,所提改进措施不仅能够提高压缩机运行过程中的油位,而且能够提高机组运行稳定性。

The effect of the liquid separation ef the oil separation efficiency of the oil separator on ficiency of the liquid-vapor separator and the compressor oil level of the screw air source heat pump is analyzed. Some improvements, such as improving the liquid separation of the fin heat exchanger, optimizing the structure of the liquid-vapor separator and changing the separation mode of the oil separator, are put forward. The test is done for the screw air source heat pump. The results show that the improvements can not only raise the oil level in the operation process of compressor but also enhance the operation reliability.