-
公开(公告)号：US20230296183A1
公开(公告)日：2023-09-21
申请号：US18041139
申请日：2021-08-12
Applicant: Edwards Limited
Inventor： Cainan Long , Ian David Stones , Phillip North , Clifford George Burt , Robin Hockley , Konstantinos Karoulas
CPC classification number: F16K15/042 , F16K17/12 , F16K25/005 , F16K2200/204
Abstract: A vacuum system non-return valve includes a baffle for extending across a flow path in the vacuum system and a valve member. The baffle has an aperture, a perimeter of the aperture has a valve seat. The valve member has a curved sealing surface configured to mate with the valve seat. 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 in a closed position and is displaceable in use to move away from the valve seat and allow a fluid flow in an open position; at least a portion of the surface of the baffle surrounding the aperture slopes towards the inlet end of the valve such that the aperture is smaller at the inlet end than it is at the outlet end.
-
公开(公告)号：US12085178B2
公开(公告)日：2024-09-10
申请号：US18041139
申请日：2021-08-12
Applicant: Edwards Limited
Inventor： Cainan Long , Ian David Stones , Phillip North , Clifford George Burt , Robin Hockley , Konstantinos Karoulas
CPC classification number: F16K15/042 , F16K17/12 , F16K25/005 , F16K2200/204
Abstract: A vacuum system non-return valve includes a baffle for extending across a flow path in the vacuum system and a valve member. The baffle has an aperture, a perimeter of the aperture has a valve seat. The valve member has a curved sealing surface configured to mate with the valve seat. 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 in a closed position and is displaceable in use to move away from the valve seat and allow a fluid flow in an open position; at least a portion of the surface of the baffle surrounding the aperture slopes towards the inlet end of the valve such that the aperture is smaller at the inlet end than it is at the outlet end.
-
公开(公告)号：US20220389930A1
公开(公告)日：2022-12-08
申请号：US17771311
申请日：2020-10-09
Applicant: Edwards Limited
Inventor： Paul Milner , David Roy Hayler , Phillip North
Abstract: Aspects of the present invention relate to a stator component for a pump housing. The stator component has a plurality of fluid inlet channels for conveying fluid to respective pumping chambers. The fluid inlet channels each have an inlet port for conveying fluid into the pumping chamber. A plurality of fluid transfer channels are provided for conveying fluid to a respective one of the fluid inlet channels. The fluid transfer channels each have an inlet for receiving pumped fluid. The stator component is adapted to receive at least one sealing member for inhibiting the conveyance of fluid into an associated one of the pumping chambers. Aspects of the present invention relate to a pump housing, a cover plate and a pump. Aspects of the present invention also relate to a method of converting a stator component.
-
公开(公告)号：US10968909B2
公开(公告)日：2021-04-06
申请号：US15749884
申请日：2016-08-04
Applicant: Edwards Limited
Inventor： Phillip North , Kanstantinos Karoulas , Benjamin Raymond Wooller , Alan Ernest Kinnaird Holbrook
Abstract: A dry vacuum pump may include a stator which defines an internal chamber in which a rotor is rotationally mounted. A sensor is mounted to the stator and has an output connected to a processing circuit arranged to analyse the output of the sensor to determine the absolute distance between a point on the surface of the rotor and internal stator surface. The rotor to stator clearance can thus be accurately determined in real time during operation of the pump, so that the pump performance can be optimised over its serviceable life.
-
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.
-
Patent Agency Ranking
6.发明申请公开(公告)号：US20210079914A1
公开(公告)日：2021-03-18
申请号：US16954466
申请日：2019-04-04
Applicant: Edwards Limited
Inventor： Phillip North , Ian Olsen
Abstract: A multi-stage positive displacement vacuum pump and a method of differentially pumping multiple vacuum chambers using such a pump is disclosed. The pump comprises a housing for housing at least one rotor mounted for rotation on a corresponding at least one shaft and for pumping gas through the multiple stages for output through an exhaust. The housing comprises a first inlet configured to admit gas to an inlet stage of said vacuum pump, and a further inlet configured to admit gas to an intermediate stage of said vacuum pump. The pump is configured such that gas admitted through each of the first and further inlets is pumped together as a combined gas flow by at least one stage of said vacuum pump downstream of said intermediate stage.
-
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.
-
公开(公告)号：US20180238328A1
公开(公告)日：2018-08-23
申请号：US15749884
申请日：2016-08-04
Applicant: Edwards Limited
Inventor： Phillip North , Kanstantinos Karoulas , Benjamin Raymond Wooller , Alan Ernest Kinnaird Holbrook
CPC classification number: F04C18/12 , F04C28/28 , F04C2220/12 , F04C2240/81 , F04C2270/17
Abstract: A dry vacuum pump may include a stator which defines an internal chamber in which a rotor is rotationally mounted. A sensor is mounted to the stator and has an output connected to a processing circuit arranged to analyse the output of the sensor to determine the absolute distance between a point on the surface of the rotor and internal stator surface. The rotor to stator clearance can thus be accurately determined in real time during operation of the pump, so that the pump performance can be optimised over its serviceable life.
-
公开(公告)号：US12049894B2
公开(公告)日：2024-07-30
申请号：US17771311
申请日：2020-10-09
Applicant: Edwards Limited
Inventor： Paul Milner , David Roy Hayler , Phillip North
IPC: F04C27/00 , F01C1/12 , F01C19/00 , F04C18/12 , F04C23/00 , F04C25/02 , F04C29/12 , F04C18/08 , F04C29/00
CPC classification number: F04C27/008 , F04C18/126 , F04C23/001 , F04C29/12 , F01C1/126 , F01C19/005 , F04C18/08 , F04C18/088 , F04C23/00 , F04C23/003 , F04C25/02 , F04C27/00 , F04C29/0007 , F04C2220/10 , F04C2240/10
Abstract: Aspects of the present invention relate to a stator component for a pump housing. The stator component has a plurality of fluid inlet channels for conveying fluid to respective pumping chambers. The fluid inlet channels each have an inlet port for conveying fluid into the pumping chamber. A plurality of fluid transfer channels are provided for conveying fluid to a respective one of the fluid inlet channels. The fluid transfer channels each have an inlet for receiving pumped fluid. The stator component is adapted to receive at least one sealing member for inhibiting the conveyance of fluid into an associated one of the pumping chambers. Aspects of the present invention relate to a pump housing, a cover plate and a pump. Aspects of the present invention also relate to a method of converting a stator component.
-
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.
-
-
-
-
-
-
-
-
-
Search Results
13
records
(took 0.011 seconds)
