公开(公告)号：US20190186494A1

公开(公告)日：2019-06-20

申请号：US16325623

申请日：2017-08-03

Applicant: Edwards Limited

Inventor： Christopher Miles

IPC: F04D9/00 ,  F04D19/00 ,  F16K15/18 ,  F16K24/06

CPC classification number: F04D9/006 ,  F04D19/002 ,  F04D19/042 ,  F04D27/0261 ,  F04D27/0292 ,  F05B2260/64 ,  F16K15/18 ,  F16K24/06

Abstract: A turbo pump vent assembly and method are disclosed. The turbo pump vent assembly comprises: a primary manual actuator operable to deliver an initial volume of air to a turbo pump; and a secondary manual actuator operable to deliver a secondary volume of air to the turbo pump, wherein the secondary volume of air is greater than the initial volume of air. In this way, an uncomplex and reliable vent is provided which can deliver initial volumes of air to slow the to turbo pump initially. Thereafter, the secondary volume of air may be delivered to slow the turbo pump more rapidly than is possible just using further initial volumes of air. Having an apparatus which can deliver differing volumes of air enables the turbo pump to be slowed safely and more quickly than is possible by delivering just the same sized volumes of air.

公开(公告)号：US20240093692A1

公开(公告)日：2024-03-21

申请号：US18256551

申请日：2021-12-14

Applicant: Edwards Limited

Inventor： James Alexander Haylock ,  Christopher Miles ,  Alexander James Patey

IPC: F04D27/00 ,  F04D29/056 ,  G01M13/04

CPC classification number: F04D27/001 ,  F04D29/056 ,  G01M13/04

Abstract: A monitoring apparatus includes: input reception circuitry configured to receive a signal indicative of a characteristic of rotating assembly rotation; and bearing wear monitoring circuitry configured to analyze the signal characteristic of rotating assembly rotation. The bearing wear monitoring circuitry is also configured to identify one or more signal features indicative of bearing wear. Bearing wear produces variation in rolling friction of the bearing and therefore is one cause of variation in shaft torque. Aspects recognise that variations in shaft torque can be indirectly monitored, measured and/or determined by appropriate measurement or monitoring of operational characteristics of a pump motor and that it may be possible to distinguish variations in shaft torque which can be attributed to bearing wear from those variations in shaft torque caused by one or more other factors.

公开(公告)号：US20250116298A1

公开(公告)日：2025-04-10

申请号：US18836228

申请日：2023-02-14

Applicant: Edwards Limited

Inventor： Richard Glyn Horler ,  Alexander James Patey ,  Christopher Miles ,  David Student ,  Tomas Petr

IPC: F16C33/66 ,  F04D19/04 ,  F04D29/063 ,  F16C19/16 ,  F16C33/58 ,  F16C35/077

Abstract: A bearing assembly, method of assembling a bearing assembly and a pump are disclosed. The bearing assembly is for mounting a rotatable shaft of a pump, and comprises an inner ring and an outer ring and a plurality of rollable elements mounted between said inner and outer rings. The bearing assembly has a lubricant directing element extending radially outwards from an outer circumference of the inner ring. The lubricant directing element may comprise a sloped radial surface, at least a portion of the sloped radial surface facing an annular gap between the inner and outer rings, a radially inner portion of the sloped surface being closer to the rollable elements than a radially outer portion of the sloped surface.

公开(公告)号：US20240254996A1

公开(公告)日：2024-08-01

申请号：US18561542

申请日：2022-05-19

Applicant: Edwards Limited

Inventor： Michael Simmonds ,  Alexander James Patey ,  Christopher Miles

IPC: F04D27/00 ,  F04D19/04 ,  F04D29/66

CPC classification number: F04D27/001 ,  F04D19/042 ,  F04D29/661 ,  F05D2270/333 ,  F05D2270/81

Abstract: A pump monitoring system includes a controller and a microphone for detecting sound waves. The controller is configured to receive an audio signal from the microphone representing sound waves generated by the vacuum pump. The controller processes the received audio signal to generate a frequency domain representation of the audio signal. The frequency domain representation of the audio signal is analysed to identify at least one fault condition frequency component indicative of a fault condition. A fault condition signal is output to identify the fault condition in dependence on the identification of the at least one fault condition frequency component. In a further embodiment, the pump monitoring system comprises a vibration sensor for detecting vibrations. The present invention also relate to a vacuum pump; a method of monitoring a vacuum pump; and a nontransitory computer-readable medium.

公开(公告)号：US11149736B2

公开(公告)日：2021-10-19

申请号：US16325623

申请日：2017-08-03

Applicant: Edwards Limited

Inventor： Christopher Miles

IPC: F04D9/00 ,  F16K15/18 ,  F16K24/06 ,  F04D27/02 ,  F04D19/04 ,  F04D19/00

Abstract: A turbo pump vent assembly and method are disclosed. The turbo pump vent assembly comprises: a primary manual actuator operable to deliver an initial volume of air to a turbo pump; and a secondary manual actuator operable to deliver a secondary volume of air to the turbo pump, wherein the secondary volume of air is greater than the initial volume of air. In this way, an uncomplex and reliable vent is provided which can deliver initial volumes of air to slow the turbo pump initially. Thereafter, the secondary volume of air may be delivered to slow the turbo pump more rapidly than is possible just using further initial volumes of air. Having an apparatus which can deliver differing volumes of air enables the turbo pump to be slowed safely and more quickly than is possible by delivering just the same sized volumes of air.

公开(公告)号：US20210018387A1

公开(公告)日：2021-01-21

申请号：US16603073

申请日：2018-04-04

Applicant: Edwards Limited

Inventor： Christopher Miles ,  Paul Milner ,  Richard Salloum

IPC: G01L5/00 ,  F16C41/00 ,  F04D19/04 ,  F04D29/056 ,  F04D29/64

Abstract: The invention relates to a bearing preload force gauge for indicating the bearing preload force on a turbomolecular pump rotor bearing. The gauge comprises a housing, an indicator for indicating the bearing preload force, and actuator coupled to an impeller engagement surface by a member configured to provide a resilient bias between the actuator and the impeller engagement surface. The invention also relates to a bearing preload tool and methods for measuring the bearing preload force on a turbomolecular pump.