公开(公告)号：US20220170471A1

公开(公告)日：2022-06-02

申请号：US17540199

申请日：2021-12-01

Applicant: Agilent Technologies, Inc.

Inventor： Federico Terminio ,  Simone Cau

IPC: F04D19/04

Abstract: A vacuum pump includes a housing, a rotatable shaft extending in an axial direction within the housing, a first pumping arrangement including a first stator arrangement and a first rotor arrangement, and a second pumping arrangement including a second stator arrangement and a second rotor arrangement. The vacuum pump further includes a spacer arranged between the first pumping arrangement and the second pumping arrangement. The spacer is coupled between the first stator arrangement and the second stator arrangement and is configured to provide a defined elasticity in the axial direction allowing an elastic deformation of the spacer in the axial direction.

公开(公告)号：US11781553B2

公开(公告)日：2023-10-10

申请号：US17540199

申请日：2021-12-01

Applicant: Agilent Technologies, Inc.

Inventor： Federico Terminio ,  Simone Cau

IPC: F04D19/04

CPC classification number: F04D19/046

Abstract: A vacuum pump includes a housing, a rotatable shaft extending in an axial direction within the housing, a first pumping arrangement including a first stator arrangement and a first rotor arrangement, and a second pumping arrangement including a second stator arrangement and a second rotor arrangement. The vacuum pump further includes a spacer arranged between the first pumping arrangement and the second pumping arrangement. The spacer is coupled between the first stator arrangement and the second stator arrangement and is configured to provide a defined elasticity in the axial direction allowing an elastic deformation of the spacer in the axial direction.

公开(公告)号：US20250003427A1

公开(公告)日：2025-01-02

申请号：US18752669

申请日：2024-06-24

Applicant: Agilent Technologies, Inc.

Inventor： Giovanni Iannucci ,  Giuseppe De Palma ,  Andrea Lepore ,  Simone Cau ,  Cristiano Bruno ,  Claudio Caputo ,  Vito Apicella

IPC: F04D29/70 ,  F04D25/06 ,  F04D29/063

Abstract: A vacuum pumping system includes an oil-lubricated rotary vacuum pump, an electric motor driving the pump and a gas ballast arrangement supplying the pump with gas and fluidically coupled with the motor for sucking oil, leaked from the pump into the motor, back into the pump. The fluidic coupling is achieved by means of a leaked oil recovery unit that is housed in a region of an internal chamber of the motor where ballast gas and leaked oil are present and that establishes communication between the region of the internal chamber of the motor and the pumping chamber.