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

IPC: F16K15/04 ,  F16K17/12 ,  F16K25/00

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

IPC: F16K15/04 ,  F16K17/12 ,  F16K25/00

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：US20210199101A1

公开(公告)日：2021-07-01

申请号：US17058791

申请日：2019-05-29

Applicant: Edwards Limited

Inventor： Neil Condon ,  Gregory Martin Dams ,  Paul Milner ,  Matthew Stephen Fields ,  Konstantinos Karoulas

IPC: F04B37/14 ,  F04B53/10 ,  F04B53/20

Abstract: A foreline for a vacuum pump with an inlet connectable to e.g. a vessel to be evacuated and an outlet connected to and inlet of the vacuum pump to evacuate the vessel. Thereby, the foreline further comprises a discharge line with a first end and a second end, wherein the first end comprises an opening and the second end comprises a solid material trap. The second end is arranged outside the foreline. The first end is arranged within the foreline between the inlet and the outlet and the opening is open towards the inlet of the foreline such that incoming solid material is collected by the opening, discharged through the discharge line and caught in the solid material trap.