NOISE REDUCTION DEVICE OF ROTARY-TYPE CLOSED MOTOR COMPRESSOR

摘要

PURPOSE:To reduce noises of a rotary-type compressor by providing a space of a small capacity on the valve seat section of a lower bearing end plate and providing a slit-like pressure introduction path on the inner periphery of an exhaust port. CONSTITUTION:A space 21 of a small capacity is formed with a lower bearing end plate 14 and a pressure introduction path constituting portion 14a and is communicated to an exhaust port 7 through a pressure introduction path 22. The valve seat section 14b of the lower bearing end plate 14 is coupled in size with the pressure introduction path constituting portion 14a so that the pressure introduction path 22 is formed in a slit shape over the whole inner periphery of the exhaust port 7. The extremely large gas pressure pulsation generated near the exhaust port 7 when an exhaust valve is opened can be prevented, thereby noises can be reduced.