Damping valve, noise, cycle performance
A new design of damping valve which contain two steel valve and one piece of silica gel is proposed in this paper. This new structure is considered effective in the valve noise control especially in the mid-low speed which can lead the flutter response of valve. 6 case damping valves of different height are assembled in compressors. Noise and cycle performance experiment are carried out with the same working condition cases. One optimal damping valve is selected and it's sound pressure level of compressor is gotten about 2dB improvement compare with the mass one in the mid-low speed which contain 3210rpm and 1380rpm. Meanwhile, cycle performance's result is similar with the mass one.