公开(公告)号：EP3492698A1

公开(公告)日：2019-06-05

申请号：EP17204792.0

申请日：2017-11-30

申请人： Agilent Technologies, Inc. (A Delaware Corporation)

发明人： CARBONERI, Roberto ,  PERROTTA, Jonatan ,  CAPPUZZO, Gianfranco ,  EPIFANI, Giuseppe

IPC分类号： F01C21/10 ,  F04C25/02 ,  F04C29/04 ,  F04C29/06 ,  F04C29/12 ,  F04C18/344

摘要： The present invention relates to a vacuum pumping system (100) comprising a vacuum pump (10) and provided with a soundproofing arrangement (40, 50, 60). The vacuum pumping system of the invention comprises a vacuum pump (10) accommodated in a pump housing and a soundproofing hood (50) surrounding said pump housing and provided with a hood air inlet (52) and a hood air outlet (54). In order to improve dampening of the noise generated by the vacuum pumping system, one or more additional soundproofing shielding element(s) is/are provided between the hood air inlet and the pump housing air inlet and/or between the hood air outlet and the pump housing air outlet, respectively. In a preferred embodiment of the invention, said one or more additional soundproofing shielding element(s) is/are designed as a casing (40) surrounding said pump housing and provided with a casing air inlet (46) and a casing air outlet (48).