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公开(公告)号：US20150037187A1
公开(公告)日：2015-02-05
申请号：US14374771
申请日：2013-01-29
Applicant: Edwards Limited
Inventor： Neil Turner , Jack Raymond Tattersall , Paul David Neller , Malcolm William Gray
CPC classification number: F04C23/003 , F01C21/10 , F01C21/108 , F04C18/123 , F04C18/126 , F04C23/001 , F04C25/02 , F04C2230/60 , F04C2230/70 , F04C2230/80 , F04C2230/85 , F04C2240/805
Abstract: The present invention relates to a multi-stage vacuum pump which has a plurality of pumping stages. The pump comprises a stator forming the pumping chambers of respective pumping stages and at least one shaft, for supporting a plurality of rotors for rotation in respective pumping chambers. The stator comprises: a stator envelope which extends over an axial extent of a plurality of stator stages thereby circumscribing said at least one shaft and forming an internal profile of a plurality of stator stages: and a plurality of transverse walls located on either axial side of the stator stages to form respective said pumping chambers. At least one of the transverse walls is an inter-stage between stator stages and the stator envelope is configured to circumscribe the inter-stage for location of said inter-stage radially inward of the stator part.
Abstract translation: 本发明涉及具有多个泵送级的多级真空泵。 泵包括形成相应泵送级的泵送室的定子和至少一个轴，用于支撑多个转子以在相应的泵送室中旋转。 定子包括：定子外壳，其在多个定子级的轴向范围上延伸，从而限定所述至少一个轴并形成多个定子级的内部轮廓;以及多个横向壁，其位于 定子级形成相应的所述泵送室。 横向壁中的至少一个是定子级之间的阶段，并且定子外壳被配置为围绕定子部分的径向向内的所述级间位置的阶段。
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公开(公告)号：US10982662B2
公开(公告)日：2021-04-20
申请号：US16117886
申请日：2018-08-30
Applicant: Edwards Limited
Inventor： Ian David Stones , Malcolm William Gray , Iain David Port
Abstract: A vacuum pumping system comprises a plurality of vacuum pumping arrangements for evacuating an enclosure and an auxiliary vacuum chamber for evacuation by at least one first vacuum pumping arrangement. The vacuum pumping system has a first state for evacuating the enclosure and a second state for conserving power consumed by the system. In a first stage of the second state the first vacuum pumping arrangement is arranged to evacuate an exhaust of at least one second vacuum pumping arrangement and in a second stage the exhaust of the first pumping arrangement is arranged to be evacuated by the auxiliary vacuum chamber.
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公开(公告)号：US20200240414A1
公开(公告)日：2020-07-30
申请号：US16483145
申请日：2017-12-21
Applicant: Edwards Limited
Inventor： Michael Henry North , Phillip North , Malcolm William Gray , Neil Turner
Abstract: A pump cooling system may include a cooling body configured to be fitted to a pump housing to receive heat from the pump housing via a heat conducting path between the cooling body and pump housing. The cooling body may have a passage through which, in use, a cooling fluid is passed to conduct heat away from the cooling body. The pump cooling system includes a cooling control mechanism configured to provide a gap in the heat conducting path at pump operating temperatures below a predefined temperature so heat conduction from the pump housing to the cooling body is interrupted.
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公开(公告)号：US10082134B2
公开(公告)日：2018-09-25
申请号：US14767534
申请日：2014-01-28
Applicant: Edwards Limited
Inventor： Ian David Stones , Malcolm William Gray , Iain David Port
Abstract: A vacuum pumping system comprises a plurality of vacuum pumping arrangements for evacuating an enclosure and an auxiliary vacuum chamber for evacuation by at least one first vacuum pumping arrangement. The vacuum pumping system has a first state for evacuating the enclosure and a second state for conserving power consumed by the system. In a first stage of the second state the first vacuum pumping arrangement is arranged to evacuate an exhaust of at least one second vacuum pumping arrangement and in a second stage the exhaust of the first pumping arrangement is arranged to be evacuated by the auxiliary vacuum chamber.
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公开(公告)号：US20150377226A1
公开(公告)日：2015-12-31
申请号：US14767534
申请日：2014-01-28
Applicant: EDWARDS LIMITED
Inventor： Ian David Stones , Malcolm William Gray , Iain David Port
IPC: F04B37/14
Abstract: A vacuum pumping system comprises a plurality of vacuum pumping arrangements for evacuating an enclosure and an auxiliary vacuum chamber for evacuation by at least one first vacuum pumping arrangement. The vacuum pumping system has a first state for evacuating the enclosure and a second state for conserving power consumed by the system. In a first stage of the second state the first vacuum pumping arrangement is arranged to evacuate an exhaust of at least one second vacuum pumping arrangement and in a second stage the exhaust of the first pumping arrangement is arranged to be evacuated by the auxiliary vacuum chamber.
Abstract translation: 真空泵系统包括用于抽空外壳的多个真空泵送装置和用于通过至少一个第一真空泵送装置排空的辅助真空室。 真空泵系统具有用于抽空外壳的第一状态和用于节省由系统消耗的功率的第二状态。 在第二状态的第一阶段，第一真空泵送装置被布置成抽空至少一个第二真空泵送装置的排气，并且在第二阶段中，第一泵送装置的排气被布置成被辅助真空室排空。
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Patent Agency Ranking
公开(公告)号：US20230213026A1
公开(公告)日：2023-07-06
申请号：US18000881
申请日：2021-06-08
Applicant: Edwards Limited
Inventor： Sivabalan Kailasam , Malcolm William Gray
CPC classification number: F04B39/06 , F04B37/14 , F04B49/243
Abstract: Aspects of the present invention relate to a vacuum system. The vacuum system includes a vacuum pump; and a heat exchanger for receiving a heat transfer fluid. The heat transfer fluid comprising a gas. The heat exchanger is thermally coupled to the vacuum pump and is operable to absorb thermal energy from the vacuum pump. Aspects of the present invention also relate to a method of operating a vacuum system; and a controller for controlling operation of a vacuum system.
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公开(公告)号：US20180372081A1
公开(公告)日：2018-12-27
申请号：US16117886
申请日：2018-08-30
Applicant: Edwards Limited
Inventor： Ian David Stones , Malcolm William Gray , Iain David Port
Abstract: A vacuum pumping system comprises a plurality of vacuum pumping arrangements for evacuating an enclosure and an auxiliary vacuum chamber for evacuation by at least one first vacuum pumping arrangement. The vacuum pumping system has a first state for evacuating the enclosure and a second state for conserving power consumed by the system. In a first stage of the second state the first vacuum pumping arrangement is arranged to evacuate an exhaust of at least one second vacuum pumping arrangement and in a second stage the exhaust of the first pumping arrangement is arranged to be evacuated by the auxiliary vacuum chamber.
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公开(公告)号：US11619233B2
公开(公告)日：2023-04-04
申请号：US16323927
申请日：2017-08-09
Applicant: Edwards Limited
Inventor： Malcolm William Gray
Abstract: An enclosure system may be formed of a lightweight panel with a thin non-porous membrane that enables the extraction and leak detection of hazardous gases from housing equipment such as vacuum pumps, valves, abatement equipment and the like. Additionally, the enclosure system includes a one or multiple layers of wire mesh which prevent projectiles with a high kinetic energy from escaping from the housing equipment thereby minimising the risk of an explosion causing parts or panels to be ejected from the enclosure system.
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公开(公告)号：US11542946B2
公开(公告)日：2023-01-03
申请号：US16624544
申请日：2018-06-15
Applicant: Edwards Limited
Inventor： Neil Turner , Phillip North , Michael Henry North , Malcolm William Gray , David Alan Turrell
Abstract: A twin-shaft pump comprising: a pumping chamber; two rotatable shafts each mounted on bearings is disclosed. Each of the two rotatable shafts comprises at least one rotor element, the rotor elements being within the pumping chamber and the two rotatable shafts extending beyond the pumping chamber to a support member. The support member comprises mounting means for mounting the bearings at a predetermined distance from each other, the predetermined distance defining a distance between the two shafts. A thermal break between the pumping chamber and the support member is provided for impeding thermal conductivity between the pumping chamber and the support member, such that the pumping chamber and support member can be maintained at different temperatures. The support member and the rotor elements are formed of different materials, a coefficient of thermal expansion of a material forming the support member being higher than a coefficient of thermal expansion of a material forming the rotor elements.
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公开(公告)号：US11098718B2
公开(公告)日：2021-08-24
申请号：US16483145
申请日：2017-12-21
Applicant: Edwards Limited
Inventor： Michael Henry North , Phillip North , Malcolm William Gray , Neil Turner
IPC: F04C29/04 , F04C18/16 , F04C27/00 , F04D29/58 , F04D15/02 , F04B39/06 , F04C15/00 , F28D19/04 , F28F13/00
Abstract: A pump cooling system may include a cooling body configured to be fitted to a pump housing to receive heat from the pump housing via a heat conducting path between the cooling body and pump housing. The cooling body may have a passage through which, in use, a cooling fluid is passed to conduct heat away from the cooling body. The pump cooling system includes a cooling control mechanism configured to provide a gap in the heat conducting path at pump operating temperatures below a predefined temperature so heat conduction from the pump housing to the cooling body is interrupted.
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