As the core component of a valved linear compressor for a Joule-Thompson throttling refrigerator

the displacement characteristics of the suction valve directly affect the compressor's performance. A valve-displacement model was established to determine the displacement characteristics of the suction valve. The effects of the valve thickness

lift

and operating frequency on the displacement change of the valve were analyzed theoretically. A visualization experimental bench was constructed to measure and study the displacement changes in the valve and compressor efficiencies in different working conditions. The results showed that the valved linear compressor demonstrated the best performance when the thickness of the suction valve plate was 0.2 mm and that of the lift was 0.38 mm. Reasonable design of the valve-lift limiter height can improve the performance of the compressor

with less stress on the valve deformation and impact. At lower operating frequencies

the valve developed flutter

increasing the pressure loss. The research results can provide a reference for the optimization and reliable design of reed valve manifolds.