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公开(公告)号：US10910207B2
公开(公告)日：2021-02-02
申请号：US16568987
申请日：2019-09-12
发明人： Jonathan Atkinson , Alastair Clark , Bruce Grant
摘要： An ion mobility spectrometer comprising an ioniser for ionising a sample; a detector separated from the ioniser by a drift chamber along which ions can travel from the ioniser toward the detector; a gate for controlling the passage of ions from the ioniser to the drift chamber; an ion modifier arranged between the ioniser and the detector and comprising a first electrode and a second electrode; and a voltage provider configured to provide a time varying voltage between the first electrode and the second electrode wherein the time varying voltage has a frequency of at least 2.5 MHz.
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公开(公告)号：US20180266923A1
公开(公告)日：2018-09-20
申请号：US15762282
申请日：2016-09-30
发明人： Oliver Kirkby , Alastair Clark , Bruce Grant
IPC分类号： G01N1/22
CPC分类号： G01N1/2211
摘要： A detector inlet for providing a sample to an analytical apparatus for detecting a substance of interest, the detector inlet comprising a plenum for allowing passage of a flow of a gaseous fluid, the plenum comprising a sampling volume a sampling inlet arranged in the plenum and arranged to collect samples of the gaseous fluid from the sampling volume and to provide the samples to the analytical apparatus, wherein the flow carries particulates and a flow director arranged to create circulatory flow of the gaseous fluid around the plenum encircling the sampling inlet thereby to vary a spatial distribution of the particulates carried by the fluid to increase a relative proportion of the particulates carried past the sampling inlet without entering the sampling volume.
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公开(公告)号：US11585735B2
公开(公告)日：2023-02-21
申请号：US15762232
申请日：2016-09-30
发明人： Oliver Kirkby , Alastair Clark , Bruce Grant
IPC分类号： G01N1/22 , G01N27/622 , G01N1/44 , H01J49/04 , G01N1/38
摘要： A detector inlet for providing a sample to an analytical apparatus for detecting an aerosol, the detector inlet comprising; an intake for inhaling a flow of gaseous fluid to be sampled by the analytical apparatus; a mixing region; a first conduit for carrying a first part of the flow of gaseous fluid from the intake to the mixing region; a second conduit for carrying a second part of the flow of gaseous fluid from the intake to the mixing region; and a heater configured to heat the first part more than the second part, and wherein the detector inlet is configured to combine the first part with the second part in the mixing region.
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公开(公告)号：US11150228B2
公开(公告)日：2021-10-19
申请号：US16806273
申请日：2020-03-02
发明人： Alastair Clark , Bruce Grant , Matthew Easton , Frederic Fournier
摘要： A detector comprising an analytical apparatus for detecting a substance of interest, and a detector inlet. The detector inlet comprises a flow passage for carrying a flow of fluid, the flow passage comprising a sampling volume, and a sampling inlet adapted to collect samples of the fluid from the sampling volume as the fluid flows past the sampling inlet, and to provide the samples to the analytical apparatus, wherein the how of fluid carries particulates. The detector inlet also comprises a flow director arranged to vary a spatial distribution of the particulates carried by the fluid to increase a relative proportion of the particulates carried past the sampling inlet along the flow passage without entering the sampling volume.
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公开(公告)号：US20200083033A1
公开(公告)日：2020-03-12
申请号：US16568987
申请日：2019-09-12
发明人： Jonathan Atkinson , Alastair Clark , Bruce Grant
摘要： An ion mobility spectrometer comprising an ioniser for ionising a sample; a detector separated from the ioniser by a drift chamber along which ions can travel from the ioniser toward the detector; a gate for controlling the passage of ions from the ioniser to the drift chamber; an ion modifier arranged between the ioniser and the detector and comprising a first electrode and a second electrode; and a voltage provider configured to provide a time varying voltage between the first electrode and the second electrode wherein the time varying voltage has a frequency of at least 2.5 MHz.
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公开(公告)号：US11067484B2
公开(公告)日：2021-07-20
申请号：US15762282
申请日：2016-09-30
发明人： Oliver Kirkby , Alastair Clark , Bruce Grant
IPC分类号： G01N1/22
摘要： A detector inlet for providing a sample to an analytical apparatus for detecting a substance of interest, the detector inlet comprising a plenum for allowing passage of a flow of a gaseous fluid, the plenum comprising a sampling volume a sampling inlet arranged in the plenum and arranged to collect samples of the gaseous fluid from the sampling volume and to provide the samples to the analytical apparatus, wherein the flow carries particulates and a flow director arranged to create circulatory flow of the gaseous fluid around the plenum encircling the sampling inlet thereby to vary a spatial distribution of the particulates carried by the fluid to increase a relative proportion of the particulates carried past the sampling inlet without entering the sampling volume.
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公开(公告)号：US20200271631A1
公开(公告)日：2020-08-27
申请号：US16806273
申请日：2020-03-02
发明人： Alastair Clark , Bruce Grant , Matthew Easton , Frederic Fournier
摘要： A detector comprising an analytical apparatus for detecting a substance of interest, and a detector inlet. The detector inlet comprises a flow passage for carrying a flow of fluid, the flow passage comprising a sampling volume, and a sampling inlet adapted to collect samples of the fluid from the sampling volume as the fluid flows past the sampling inlet, and to provide the samples to the analytical apparatus, wherein the how of fluid carries particulates. The detector inlet also comprises a flow director arranged to vary a spatial distribution of the particulates carried by the fluid to increase a relative proportion of the particulates carried past the sampling inlet along the flow passage without entering the sampling volume.
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公开(公告)号：US20180266927A1
公开(公告)日：2018-09-20
申请号：US15762232
申请日：2016-09-30
发明人： Oliver Kirkby , Alastair Clark , Bruce Grant
CPC分类号： G01N1/38 , G01N1/2205 , G01N1/2211 , G01N1/44 , G01N27/622 , G01N2001/2223 , H01J49/0422
摘要： A detector inlet for providing a sample to an analytical apparatus for detecting an aerosol, the detector inlet comprising; an intake for inhaling a flow of gaseous fluid to be sampled by the analytical apparatus;a mixing region;a first conduit for carrying a first part of the flow of gaseous fluid from the intake to the mixing region;a second conduit for carrying a second part of the flow of gaseous fluid from the intake to the mixing region; and a heater configured to heat the first part more than the second part,and wherein the detector inlet is configured to combine the first part with the second part in the mixing region.
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公开(公告)号：US11774421B2
公开(公告)日：2023-10-03
申请号：US17504641
申请日：2021-10-19
发明人： Alastair Clark , Bruce Grant , Matthew Easton , Frederic Fournier
CPC分类号： G01N33/0011 , G01N1/2202 , G01N1/2273 , G01N2001/245
摘要： A detector comprising an analytical apparatus for detecting a substance of interest, and a detector inlet. The detector inlet comprises a flow passage for carrying a flow of fluid, the flow passage comprising a sampling volume, and a sampling inlet adapted to collect samples of the fluid from the sampling volume as the fluid flows past the sampling inlet, and to provide the samples to the analytical apparatus, wherein the flow of fluid carries particulates. The detector inlet also comprises a flow director arranged to vary a spatial distribution of the particulates carried by the fluid to increase a relative proportion of the particulates carried past the sampling inlet along the flow passage without entering the sampling volume.
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公开(公告)号：US20220146480A1
公开(公告)日：2022-05-12
申请号：US17504641
申请日：2021-10-19
发明人： Alastair Clark , Bruce Grant , Matthew Easton , Frederic Fournier
摘要： A detector comprising an analytical apparatus for detecting a substance of interest, and a detector inlet. The detector inlet comprises a flow passage for carrying a flow of fluid, the flow passage comprising a sampling volume, and a sampling inlet adapted to collect samples of the fluid from the sampling volume as the fluid flows past the sampling inlet, and to provide the samples to the analytical apparatus, wherein the flow of fluid carries particulates. The detector inlet also comprises a flow director arranged to vary a spatial distribution of the particulates carried by the fluid to increase a relative proportion of the particulates carried past the sampling inlet along the flow passage without entering the sampling volume.
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