In this article,in order to explore the maximum impact-contact force of the suction and discharge reed valve and quantify the amount of refrigerant gas which is sucked into and exhausted from the cylinder in the suction and discharge process for the small hermetic reciprocating refrigeration compressor,based on a reciprocating compressor's actual structure,efforts are made to set up its numerical simulation model;the suction and discharge processes are numerically simulated;according to the simula-tion results,the suction reed valve is optimized.The results indicate that the maximum impact-contact force of the suction reed valve for the reciprocating compressor before and after optimization with its seat is 102.3 N and 98.2 N respectively;the maxi-mum impact-contact stress is 151.1 MPa and 148.3 MPa respectively,decreasing by 4.1 N and 2.8 MPa respectively.The gas mass which is sucked into the cylinder in a cycle before and after optimization is 9.8×10-3g and 1.05×10-2g respectively,in-creasing by 7×10-4 g.The maximum flutter amplitude of the suction reed valve's displacement before and after optimization is 1.49 mm and 0.56 mm respectively,which is reduced by 0.93 mm;the maximum rebound displacement of the suction reed valve after initially impacting on the valve seat is 0.48 mm and 0.28 mm respectively,which is reduced by 0.2 mm.The maximum im-pact-contact force,the maximum impact-contact stress,the flutter amplitude of the displacement decreases,while the mass of re-frigerant gas which is sucked into the cylinder increases after the suction reed valve is optimized.These results are supportive to prolong the suction reed valve's service life and enhance the reciprocating compressor's working efficiency.
关键词
往复式压缩机/舌簧阀/吸排气过程/流固耦合/数值仿真
Key words
reciprocating compressor/reed valve/suction and discharge process/fluid-structure coupling/numerical simu-lation
维普
万方数据