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公开(公告)号：US10354853B2
公开(公告)日：2019-07-16
申请号：US16065496
申请日：2016-06-24
申请人： SHIMADZU CORPORATION
发明人： Tomohito Nakano
摘要： Provided is an ICP mass spectrometer which is able to effectively discharge residual water by limiting the consumption of Ar gas and a fluctuation in supply pressure of an Ar gas source at the time of an Ar gas purge for a coolant system. The ICP mass spectrometer is provided with: a device body part 1; a coolant system 2 that supplies a coolant from a water source 20 to to-be-cooled structure parts including a high-frequency power supply 12, a high-frequency coil 18, and a sample introduction part 13, which need to be cooled; and an Ar gas supply system 3. Intermediate valves V2, V3 are disposed on the downstream side of a main valve V0, a purge gas channel 32 having a purge valve V1, and a meeting point G of the purge gas channel 32. The to-be-cooled structure parts are connected to a cooling-use pipe on the downstream side of the intermediate valves V2, V3. A valve control part 35 is configured to perform intermittent purge control of repeating accumulation and discharge of the Ar gas on the upstream side of the intermediate valves V2, V3 by intermediately opening and closing the intermediate valves V2, V3 when the Ar gas is being sent.
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公开(公告)号：US09254497B2
公开(公告)日：2016-02-09
申请号：US14318998
申请日：2014-06-30
申请人： SHIMADZU CORPORATION
发明人： Tomohito Nakano
CPC分类号： B05B9/002 , G01N30/7246 , G01N30/7266 , H01J49/0445 , H01J49/0477
摘要： In the ionization probe, an assist gas nozzle, coaxial with a nozzle, is provided around a nozzle that discharges a liquid sample. A housing inside which is formed an annular assist gas channel is provided around the assist gas nozzle. A gas inlet for introducing gas into the assist gas heating channel and gas outlet for feeding gas from channel to assist gas nozzle are provided at opposite locations across the center of the channel. Gas introduced into the assist gas heating channel is heated by a substantially annular heater, and high temperature gas is discharged through gas discharge hole of the assist gas nozzle. The heater and the channel through which high temperature gas flows are arranged solely at the tip part of the ionization probe, so thermal insulation of the probe base part can be easily accomplished.
摘要翻译： 在离子化探针中，与喷嘴同轴的辅助气体喷嘴设置在排出液体样品的喷嘴周围。 在辅助气体喷嘴周围设置有形成有环形辅助气体通道的壳体。 在通道的中心的相对位置处设置有用于将气体引入辅助气体加热通道的气体入口和用于从通道供给气体以辅助气体喷嘴的气体出口。 引入辅助气体加热通道的气体被大致环形的加热器加热，高温气体通过辅助气体喷嘴的气体排出孔排出。 加热器和高温气体流过的通道仅排列在电离探针的尖端部分，因此可以容易地实现探针基部的绝热。
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公开(公告)号：US10354854B2
公开(公告)日：2019-07-16
申请号：US15744124
申请日：2016-05-16
申请人： SHIMADZU CORPORATION
发明人： Tomohito Nakano
摘要： A shutter moves along a surface of a partition wall provided between two spaces different in pressure, which faces the space higher in pressure, to open and close an aperture formed on the partition wall with an amount of force smaller than conventional shutters require. The shutter includes: a plate-shaped first member arranged in a manner of moving along a surface of the partition wall, which faces one of the two spaces higher in pressure, to open and close the aperture, the first member being provided, in a region which corresponds to the aperture, with a small aperture having an area smaller than the area of the aperture, and a plate-shaped second member arranged in a manner of moving along a surface of the first member, which faces the space higher in pressure, to open and close the small aperture.
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公开(公告)号：US09633826B1
公开(公告)日：2017-04-25
申请号：US15070284
申请日：2016-03-15
申请人： SHIMADZU CORPORATION
发明人： Tomohito Nakano , Yusuke Sakagoshi
CPC分类号： H01J49/04 , H01J49/0495 , H01J49/10
摘要： The ionization chamber of the mass spectrometer is movable between the maintenance position for performing maintenance of the mass spectrometer unit and the analysis position for performing sample analysis, using a shielding plate synchronized with the motion of the ionization chamber where the shielding plate closes part of the aperture of the predetermined region when the ionization chamber is in the analysis position, whereas the shielding plate opens part of the aperture of the predetermined region when the ionization chamber is in the maintenance position so that connection tubes may pass through the part of the aperture of the predetermined region.
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公开(公告)号：US09008496B2
公开(公告)日：2015-04-14
申请号：US13788393
申请日：2013-03-07
申请人： Shimadzu Corporation
发明人： Tomohito Nakano
CPC分类号： F24H3/002 , G01N30/7246 , G01N30/7253 , G01N30/7266
摘要： A probe including a liquid sample channel through which a liquid sample flows in a specified direction; a nebulizer gas channel through which a nebulizer gas flows in a specified direction, formed at the outer circumference of the liquid sample channel so as to have a round annular outer circumference and be coaxial with the liquid sample channel; a heating gas channel for injecting an assist gas in a specified direction, wherein a heating gas injection port is formed around the outlet end of the nebulizer gas channel so as to have a round annular outer circumference and be coaxial with the nebulizer gas channel; and a heating element which is arranged inside the heating gas channel and heats the assist gas for injecting through the heating gas injection port.
摘要翻译： 包括液体样品通道的探针，液体样品通过所述液体样品通道沿指定方向流动; 喷雾器气体通道，雾化器气体沿着指定方向流动，形成在液体样品通道的外周，以具有圆形环形外圆周并与液体样品通道同轴; 用于沿指定方向喷射辅助气体的加热气体通道，其中在雾化器气体通道的出口端周围形成加热气体注入口，以具有圆形环形外圆周并与喷雾器气体通道同轴; 以及加热元件，其设置在加热气体通道内部，并且通过加热气体注入口加热用于注入的辅助气体。
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公开(公告)号：US11721536B2
公开(公告)日：2023-08-08
申请号：US17291824
申请日：2018-11-29
申请人： SHIMADZU CORPORATION
发明人： Manabu Ueda , Tomohito Nakano , Yuki Tanaka
CPC分类号： H01J49/0431 , H01J49/063 , H01J49/165 , H01J49/24
摘要： A single type quadrupole mass spectrometer equipped with an ion source by the ESI method, which is a small device including a vacuum pump having a relatively small evacuation speed. The internal diameter of a desolvation tube for introducing ions from an ionization chamber into a first intermediate vacuum chamber is set to 0.4 mm φ, which is large for a small mass spectrometer. The evacuation speed of a rotary pump is determined so that the product of the cross-sectional opening area of the desolvation tube and the pressure in the first intermediate vacuum chamber falls within a range of 15 to 40 mm2·Pa. This can ensure high detection sensitivity and reduce clogging of the desolvation tube due to droplets. Since the pressure in the first intermediate vacuum chamber does not need to be increased more than necessary, a small rotary pump having a small evacuation speed can be used.
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公开(公告)号：US08927929B1
公开(公告)日：2015-01-06
申请号：US14296844
申请日：2014-06-05
申请人： Shimadzu Corporation
发明人： Tomohito Nakano
CPC分类号： H01J49/24 , H01R13/6315 , H01R24/68 , H01R24/76 , H01R2101/00
摘要： An ionization chamber side voltage contact point is formed so as to protrude from the compartment in the ionization chamber, a mass spectrometric unit side voltage contact point 92 is formed in the hole created in the housing of the mass spectrometric unit, and a predetermined distance is provided between the inner periphery of the hole and the outer periphery of the mass spectrometric unit side voltage contact point in the structure, which allows the ionization chamber side voltage contact point to be inserted into the hole so to be connected to the mass spectrometric unit side voltage contact point when the ionization chamber is in the analysis position and allows the ionization chamber side voltage contact point to be pulled out from the hole so as to be disconnected from the mass spectrometric unit side voltage contact point the ionization chamber is in the maintenance position.
摘要翻译： 电离室侧电压接触点形成为从电离室的隔室突出，质谱单元侧电压接触点92形成在质谱单元壳体内形成的孔中，预定距离为 设置在孔的内周和结构中的质谱单元侧电压接触点的外周之间，这允许电离室侧电压接触点插入到孔中，以便连接到质谱单元侧 电离室处于分析位置的电压接触点，并且允许电离室侧电压接触点从孔中拉出，以便与质谱单元侧电压接触点断开，电离室处于维护位置 。
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