Connection piece for connecting a housing of a drive unit to a housing of a compressor element

摘要

Connection piece for connecting a housing (4) of a drive unit (2) with a housing (5) of a compressor element (1). The connection piece is provided with ribs (12) over at least a part of its wall, the height of the ribs (12) being at least equal to one and a half times a thickness of the part of the wall upon which the rib is standing and the thickness of the ribs (12), half-way up the height, being equal to at least half of the thickness of the part of the wall. The ribs (12) form a pattern which divides the wall into adjacent wall segments (13) which have a first characteristic mode for bending that has a resonant frequency which excludes excitation by substantially all excitation frequencies up to and including a highest of the compressor element (1).