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公开(公告)号：US11719244B2
公开(公告)日：2023-08-08
申请号：US16639528
申请日：2018-08-16
Applicant: Edwards Limited
Inventor： Ian David Stones , Nigel Paul Schofield , Ian Andrew Norton
CPC classification number: F04D17/18 , F04C25/02 , F04C29/0057 , F04C29/0092 , F04C29/124 , F04C2210/22 , F04C2220/10 , F04C2240/10 , F04C2240/20 , F04C2240/40 , F04C2240/50 , F04C2240/603 , F05B2210/12
Abstract: A pump and method for pumping a gas are disclosed. The pump comprises a rotor and a stator. At least one of the rotor or stator comprises at least one liquid opening configured for fluid communication with a liquid source. The liquid opening is configured such that in response to a driving force exerted on liquid from the liquid source a stream of liquid is output from the opening, the stream of liquid forming a liquid blade between the rotor and the stator, gas confined by said stator, said rotor and said liquid blade being driven through said pump from a gas inlet towards a gas outlet.
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公开(公告)号：US11280340B2
公开(公告)日：2022-03-22
申请号：US16504985
申请日：2019-07-08
Applicant: Edwards Limited
Inventor： Ian David Stones , Christopher Mark Bailey
Abstract: A vacuum pump, vacuum pump arrangement and method are disclosed. The vacuum pump includes at least one rotor; and a stator, an inlet for receiving gas during operation; and an exhaust for exhausting the gas. The vacuum pump includes a shaft extending through a centre of said pump and comprising a plate mounted on an end of the shaft towards the inlet. The vacuum pump includes control circuitry configured to control an axial position of the plate, a change in axial position of the plate providing a change in inlet conductance of gas to the vacuum pump. The plate is mounted such that it extends beyond the inlet in at least some axial positions of the rotor such that the plate is not on the same side of the inlet as the stator.
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公开(公告)号：US09249805B2
公开(公告)日：2016-02-02
申请号：US14471698
申请日：2014-08-28
Applicant: Edwards Limited
Inventor： Ian David Stones , Nigel Paul Schofield , Martin Nicholas Stuart
CPC classification number: F04D19/042 , F04D17/168 , F04D19/044 , F04D19/046 , F04D23/008 , H01J49/24
Abstract: A vacuum pump comprises a molecular drag pumping mechanism and a regenerative pumping mechanism. A rotor element of the molecular drag pumping mechanism surrounds rotor elements of the regenerative pumping mechanism.
Abstract translation: 真空泵包括分子牵引泵机构和再生泵送机构。 分子拖拉机构的转子元件围绕再生泵送机构的转子元件。
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公开(公告)号：US20250025816A1
公开(公告)日：2025-01-23
申请号：US18712554
申请日：2022-11-22
Applicant: Edwards Limited
Inventor： Mark Richard O'Neill , Ian David Stones , Ian David Benzeval , Fraser Gray
IPC: B01D45/14
Abstract: The present invention relates to a rotor for a separator apparatus. The rotor having an axis of rotation and comprising an inlet operable to receive an effluent stream, an annular skirt defining a centrifugal separator operable to separate the effluent stream, the centrifugal separator having a gas outlet in first direction and a waste outlet in a second direction. A surface of the annular skirt is angled towards the axis of rotation of the rotor, such that during rotation of the rotor, non-gaseous matter in the effluent stream is biased towards the waste outlet by contact with said surface. The invention also relates to a separator apparatus comprising such a rotor, a method of treating an effluent stream, and a method of designing a rotor.
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公开(公告)号：US20220290767A1
公开(公告)日：2022-09-15
申请号：US17634643
申请日：2020-08-13
Applicant: Edwards Limited
Inventor： David Alan Turrell , Phillip North , Neil Turner , Michael Henry North , Clifford George Burt , Sivabalan Kailasam , Cainan Long , Ian David Stones
Abstract: A vacuum system non-return valve has a baffle for extending across a flow path The baffle has an aperture, a perimeter of the aperture having a valve seat. The valve also has a valve member having a protrusion extending from a surface configured to mate with the valve seat, the protrusion extending through the aperture; wherein the protrusion includes a retaining portion extending outwardly from the protrusion and configured such that the retaining portion cannot pass through the aperture. The valve member and aperture are configured such that the valve member obscures the aperture and seals with the valve seat to impede a flow of fluid from an outlet end to an inlet end in a closed position and is displaceable in use to move away from the valve seat and allow a fluid flow from the inlet end to the outlet end in an open position.
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Patent Agency Ranking
公开(公告)号：US10337517B2
公开(公告)日：2019-07-02
申请号：US14374106
申请日：2013-01-24
Applicant: Edwards Limited
Inventor： Nigel Paul Schofield , Ian David Stones , Stephen Dowdeswell
Abstract: An improved vacuum pump mechanism is described in which an intersecting solid or perforated element is arranged to intersect a channel member. Relative movement of the intersecting solid or perforated element and channel member causes gas molecules to be urged from inlet to an outlet of the pump. Gas molecules are constrained within the channel member and interaction of the gas molecules with the flat and smooth surfaces of the intersecting solid or perforated member influence momentum of the gas molecules so that they are directed towards the outlet. In one embodiment, the channel member is formed as a helix and the intersecting solid or perforated elements are disk-shaped. An alternative embodiment is provided having the channel member configured as a spiral and the perforated elements as cylindrical skirts. The pump provides significant improvements in pump capacity, reduced power consumption and size of pump.
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公开(公告)号：US20210172440A1
公开(公告)日：2021-06-10
申请号：US16639528
申请日：2018-08-16
Applicant: Edwards Limited
Inventor： Ian David Stones , Nigel Paul Schofield , Ian Andrew Norton
Abstract: A pump and method for pumping a gas are disclosed. The pump comprises a rotor and a stator. At least one of the rotor or stator comprises at least one liquid opening configured for fluid communication with a liquid source. The liquid opening is configured such that in response to a driving force exerted on liquid from the liquid source a stream of liquid is output from the opening, the stream of liquid forming a liquid blade between the rotor and the stator, gas confined by said stator, said rotor and said liquid blade being driven through said pump from a gas inlet towards a gas outlet.
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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：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：US20150167672A1
公开(公告)日：2015-06-18
申请号：US14412905
申请日：2013-06-10
Applicant: Edwards Limited
Inventor： Ian David Stones , Alan Ernest Kinnaird Holbrook
CPC classification number: F04C23/003 , F04C18/0215 , F04C18/0269 , F04C18/045 , F04C23/001 , F04C28/24
Abstract: The present invention relates to a scroll compressor comprising a scroll pumping arrangement comprising two scrolls each having a scroll wall with inner and outer scroll wall surfaces which co-operate with respective outer and inner scroll wall surfaces of the other scroll wall providing two pairs of co-operating surfaces which, on relative orbiting motion of the scrolls, pump fluid from an inlet to an outlet of the arrangement, the scroll walls having a respective plurality of wraps I, II, III, IV, V between the inlet and the outlet and wherein the co-operating scroll wall surfaces of one of said pairs of at least one wrap are generally circular.
Abstract translation: 涡旋压缩机技术领域本发明涉及一种涡旋压缩机，其包括涡旋泵送装置，其包括两个涡旋件，每个涡旋件具有涡旋壁，内壁和外涡旋壁面与另一涡旋壁的相应外壁和内涡壁面配合， 所述操作表面在所述涡旋件的相对轨道运动，泵流体从所述装置的入口到所述出口的出口处，所述涡旋壁在所述入口和出口之间具有相应的多个包装I，II，III，IV，V，以及 其中所述成对的至少一个包裹物中的一个的合作涡旋壁表面通常是圆形的。
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