A reciprocating piston compressor having a suction muffler and a pair of
discharge mufflers to attenuate noise created by the primary pumping
frequency in the primary pumping pulse. The suction muffler is disposed
along a suction tube extending between the motor cap and the cylinder
head of the compressor. The discharge mufflers are positioned in series
within the compressor to receive discharge gases from the compression
mechanism and are spaced one quarter of a wavelength from each other so
as to sequentially diminish the problematic or noisy frequencies created
during compressor operation. The motor/compressor assembly including the
motor and compression mechanism is mounted to the interior surface of the
compressor housing by spring mounts. These mounted are secured to the
housing to define the position of the nodes and anti-nodes of the
frequency created in the housing to reduce noise produced by natural
frequencies during compressor operation.