BigPatents India

Inlet silencer system for motor-compressor sets of the type comprising, in a hermetically sealed capsule (CH), a compressor comprising a body (1), within which there are positioned a cylinder (13) containing a piston (18) and at least one back-flow chamber (12), a motor for the driving of said piston and a cylinder head (5) closing said cylinder frontally through a set of valves (2), said silencer system comprising at least one inlet silencer (3, 4) conveying the refrigerant gas to be compressed from within the capsule towards the cylinder head and comprising two chambers (43, 44) separated by a wall (40), an intake tube (30) conveying the gas from within the capsule towards a first (43) of said chambers, a coupling tube (42) going through said wall (40) to provide for the passage of the gas from the first chamber to the second chamber and a lead-hin pipe (31) connecting the second chamber (44) to said cylinder head (5), said silencer system being characterised in that the ratio by volume between the two chambers (43, 44) is of the order of 1 and in that said ratio by volume is determined to obtain a diminishing of acoustic energy in the region of a frequency of 500 Hz. No. of Pages : 16 No. of Claims : 19