公开(公告)号：US20170298935A1

公开(公告)日：2017-10-19

申请号：US15512883

申请日：2014-09-26

Applicant: ATELIERS BUSCH SA

Inventor： Didier MÜLLER ,  Jean-Eric LARCHER ,  Théodore ILTCHEV

IPC: F04C11/00 ,  F04C2/16 ,  F04C15/06

CPC classification number: F04C11/003 ,  F04C2/16 ,  F04C15/06 ,  F04C18/16 ,  F04C23/001 ,  F04C23/005 ,  F04C25/02 ,  F04C28/02 ,  F04C28/06 ,  F04C2220/12

Abstract: The present invention relates to a pumping system to generate a vacuum (SP), comprising a main vacuum pump which is a dry screw pump (3) having a gas suction inlet (2) connected to a vacuum chamber (1) and a gas discharge outlet (4) leading into a gas evacuation conduit (5) in the direction of a gas exhaust outlet (8) outside the pumping system. The pumping system comprises a non-return valve (6) positioned between the gas discharge outlet (4) and the gas exhaust outlet (8), and an auxiliary vacuum pump (7) connected in parallel to the non-return valve. In a pumping method by means of this pumping system (SP), the main vacuum pump (3) is started up in order to pump the gases contained in the vacuum chamber (1) and to discharge these gases through its gas discharge outlet (4), simultaneously to which the auxiliary vacuum pump (7) is started up. Moreover the auxiliary vacuum pump (7) continues to pump all the while that the main vacuum pump (3) pumps the gases contained in the vacuum chamber (1) and/or all the while that the main vacuum pump (3) maintains a defined pressure in the vacuum chamber (1).

公开(公告)号：US20170045051A1

公开(公告)日：2017-02-16

申请号：US15306175

申请日：2014-05-01

Applicant: Ateliers Busch SA

Inventor： Didier MÜLLER ,  Jean-Eric LARCHER ,  Théodore ILTCHEV

IPC: F04C23/00 ,  F04C18/344 ,  F04F5/20 ,  F04C29/02 ,  F04C29/00 ,  F04C25/02 ,  F04C28/06

Abstract: The present invention relates to a pumping method in a pumping system (SP, SPP) comprising: a primary lubricated rotary vane vacuum pump (3) with a gas inlet port (2) connected to a vacuum chamber (1) and a gas outlet port (4) leading into a conduit (5) before coming out into the gas outlet (8) of the pumping system (SP, SPP), a non-return valve (6) positioned in the conduit (5) between the gas outlet port (4) and the gas outlet (8), and an ejector (7) connected in parallel to the non-return valve (6). According to this method, the primary lubricated rotary vane vacuum pump (3) is set into action in order to pump the gases contained in the vacuum chamber (1) through the gas outlet port (4). Simultaneously the ejector (7) is fed with working fluid, and the ejector (7) continues to be fed with working fluid all the while that the primary lubricated rotary vane vacuum pump (3) pumps the gases contained in the vacuum chamber (1) and/or all the while that the primary lubricated rotary vane vacuum pump (3) maintains a defined pressure in the vacuum chamber (1). The present invention also relates to a pumping system (SP, SPP) able to be used to implement this method.

Abstract translation: 本发明涉及一种泵送系统（SP，SPP）中的泵送方法，包括：具有连接到真空室（1）的气体入口（2）的主润滑旋转叶片真空泵（3）和气体出口 （4）在进入泵送系统（SP，SPP）的气体出口（8）之前导入导管（5）中;定位在导管（5）中的止回阀（6）之间的气体出口 （4）和气体出口（8）以及与止回阀（6）并联连接的喷射器（7）。 根据该方法，主润滑旋转叶片真空泵（3）被动作以通过气体出口（4）泵送包含在真空室（1）中的气体。 同时，喷射器（7）被供给工作流体，并且喷射器（7）继续被供给工作流体，同时主润滑旋转叶片真空泵（3）泵送包含在真空室（1）中的气体， 和/或所有主要润滑的旋转叶片真空泵（3）在真空室（1）中保持限定的压力。 本发明还涉及能够用于实现该方法的泵送系统（SP，SPP）。

公开(公告)号：US20230143219A1

公开(公告)日：2023-05-11

申请号：US17914533

申请日：2021-05-10

Applicant: Ateliers Busch SA

Inventor： Didier MÜLLER ,  Théodore ILTCHEV ,  Artur BACHMANN

IPC: F04C18/12 ,  F04C29/00 ,  F04C18/16

CPC classification number: F04C18/126 ,  F04C29/005 ,  F04C18/16 ,  F04C2220/12

Abstract: The present invention concerns a dry vacuum pump comprising:



a drive device (1) comprising a drive shaft (3) at one end of which is fixed at least one drive wheel (4) provided to set in motion at least one belt (5);
at least two parallel rotors (7, 8) each having a shaft (9, 10) provided with a rotor element (11, 12), this shaft (9, 10) being able to be driven in rotation by the belt (5) and being equipped at one of its axial ends with a toothed wheel (13, 14),
this pump having the special features that:
the drive wheel (4) and the belt (5) are smooth;
each shaft (9, 10) of the rotor (7, 8) comprises at least one smooth section (16, 17) arranged to co-operate with the belt (5), and
the toothed wheels (13, 14) of the shafts (9, 10) of the rotor (7, 8) are dimensioned and arranged to mesh with one another.

公开(公告)号：US20170284394A1

公开(公告)日：2017-10-05

申请号：US15513574

申请日：2014-10-02

Applicant: Ateliers Busch SA

Inventor： Didier MÜLLER ,  Jean-Eric LARCHER ,  Théodore ILTCHEV

IPC: F04C25/02 ,  F04B41/06 ,  F04F5/20 ,  F04C29/12 ,  F04C18/12 ,  F04B37/14

Abstract: The present invention relates to a pumping system to generate a vacuum (SP), comprising a main vacuum pump which is a claw pump (3) having a gas suction inlet (2) connected to a vacuum chamber (1) and a gas discharge outlet (4) leading into a gas evacuation conduit (5) in the direction of a gas exhaust outlet (8) outside the pumping system. The pumping system comprises a non-return valve (6) positioned between the gas discharge outlet (4) and the gas exhaust outlet (8), and an auxiliary vacuum pump (7) connected in parallel to the non-return valve. In a pumping method by means of this pumping system (SP), the main vacuum pump (3) is started up in order to pump the gases contained in the vacuum chamber (1) and to discharge these gases through its gas discharge outlet (4), simultaneously to which the auxiliary vacuum pump (7) is started up. Moreover the auxiliary vacuum pump (7) continues to pump all the while that the main vacuum pump (3) pumps the gases contained in the vacuum chamber (1) and/or all the while that the main vacuum pump (3) maintains a defined pressure in the vacuum chamber (1).

公开(公告)号：US20170089339A1

公开(公告)日：2017-03-30

申请号：US15126875

申请日：2014-04-07

Applicant: Ateliers Busch SA

Inventor： Didier Müller ,  Jean-Eric LARCHER ,  Théodore ILTCHEV

IPC: F04C25/02 ,  F04F5/52 ,  F04F5/20 ,  F04C18/16 ,  F04C28/06

CPC classification number: F04C25/02 ,  F04C18/16 ,  F04C23/005 ,  F04C28/06 ,  F04C28/065 ,  F04C2210/221 ,  F04C2210/225 ,  F04C2220/12 ,  F04C2220/30 ,  F04F5/20 ,  F04F5/52 ,  F04F5/54

Abstract: The present invention relates to a pumping method in a pumping system (SP) comprising: a primary dry screw-type vacuum pump (3) with a gas entry orifice (2) connected to a vacuum chamber (1) and a gas exit orifice (4) leading into a conduit (5) before coming out into the gas outlet (8) of the pumping system (SP), a non-return valve (6) positioned in the conduit (5) between the gas exit orifice (4) and the gas outlet (8), and an ejector (7) connected in parallel to the non-return valve (6). According to this method, the primary dry screw-type vacuum pump (3) is put into operation in order to pump the gases contained in the vacuum chamber (1) through the gas exit orifice (4); in a simultaneous way, the ejector (7) is fed with working fluid, and the ejector (7) continues to be fed with working fluid all the time that the primary dry screw-type vacuum pump (3) pumps the gases contained in the vacuum chamber (1) and/or all the time that the primary dry screw-type vacuum pump (3) maintains a defined pressure in the vacuum chamber (1). The present invention also relates to a pumping system (SP) able to be used for implementing this method.